CN115675576A - Early warning method and early warning system - Google Patents

Abstract

The application discloses an early warning method and an early warning system, and belongs to the technical field of railway equipment. The method comprises the following steps: continuously receiving a distance signal sent by a train in the process of driving to a target point; monitoring the distance between the train and a target point in real time according to the distance signal; when the distance between the train and the target point is smaller than or equal to a first preset safety distance, generating a first warning signal, and performing primary warning according to the first warning signal; and when the distance between the train and the target point is less than or equal to a second preset safety distance, sending a second warning signal, and performing secondary early warning according to the second warning signal. According to the method, multi-stage early warning is set before the train reaches a target point (construction site), and early warning is carried out in a linkage broadcast mode, so that the coverage area of warning and receiving crowds are enlarged, protection is more systematic and comprehensive, and the early warning effect is improved.

Description

Early warning method and early warning system

Technical Field

The application belongs to the technical field of railway equipment, and particularly relates to an early warning method and an early warning system for early warning of an adjacent-line vehicle coming in a railway construction site.

Background

With the increasing of the existing railway transportation density and railway mileage, a large amount of construction, overhaul and maintenance work needs to be carried out on a large number of trains by railway traffic constructors after the trains are transported by railway lines. Under the condition of heavy construction and transportation tasks, the construction, overhaul and maintenance processes often occur at two sides of a business line where a train runs. In order to ensure the safety of personnel and running trains, the personnel and equipment should leave the track line and withdraw to a safety zone in time before the trains arrive.

Under the traditional situation, the method mainly comprises the steps that a safety protection worker is arranged on a construction site, an early warning is carried out on an approaching train in a pure manual reminding mode, and after the protection worker receives a train coming signal sent by a station liaison worker, an alarm is sent to site construction workers in modes of whistle blowing or shouting and the like, so that the evacuation of the site construction workers is instructed. However, in practical situations, the early warning method is limited by the field operation environment, for example, construction noise is too high or people are scattered and cannot hear whistle sound, and the effectiveness of the early warning cannot be guaranteed.

Aiming at the defects of the traditional early warning mode, an automatic early warning mode is adopted at present, and usually, after a train is monitored to be close, a warning shoulder lamp worn by a protector or an alarm held by the protector reminds the protector that the train is close, and then the protector instructs field operating personnel to evacuate timely. However, the method still has potential safety hazards, for example, the guardian does not notice that the shoulder lamp flickers, or the field environment is too noisy and does not hear the sound of the alarm, and the like, which may cause safety accidents, so that the automatic early warning cannot achieve the due early warning effect.

Therefore, how to design an incoming vehicle early warning method and system capable of effectively guaranteeing the safety of operators becomes a problem to be solved urgently at present.

Disclosure of Invention

The application aims to provide an early warning method and an early warning system, which can meet the requirement of effectively reminding locomotives and operators to avoid before a train comes.

In a first aspect, an embodiment of the present application provides an early warning method, where the method includes: continuously receiving a distance signal sent by a train in the process of driving to a target point; monitoring the distance between the train and a target point in real time according to the distance signal; when the distance between the train and the target point is smaller than or equal to a first preset safety distance, generating a first warning signal; performing primary early warning according to the first warning signal, wherein the primary early warning comprises broadcasting line information and position information of the train through a broadcasting device within a preset range of a target point; and when the distance between the train and the target point is less than or equal to a second preset safety distance, sending a second warning signal, wherein the second warning signal is used for indicating secondary early warning, and the second preset safety distance is less than the first preset safety distance.

In a possible implementation manner of the first aspect, the method further includes: and when the distance between the train and the target point is less than or equal to a third preset safety distance, sending a third warning signal, wherein the third warning signal is used for indicating three-level early warning, and the third preset safety distance is less than the second preset safety distance.

In a possible implementation manner of the first aspect, the broadcasting device includes a plurality of audio-visual devices, and when performing the primary early warning, the broadcasting device controls the plurality of audio-visual devices to broadcast the line information and the position information of the train; when secondary early warning is carried out, a target alarm is triggered through a remote control instruction, wherein the target alarm is an alarm corresponding to the remote control instruction in a plurality of preset alarms corresponding to the secondary early warning; and controlling the broadcaster to broadcast the target alert; when carrying out tertiary early warning, utilize the microphone to carry out the people's voice collection to and the people's voice of control broadcaster broadcast microphone collection.

In a possible implementation manner of the first aspect, the preset safe distance is set according to a type of the train and a maximum driving speed; the early warning method further comprises the following steps: and adjusting parameters of at least one of the primary early warning, the secondary early warning or the tertiary early warning according to the type of the target point, wherein the parameters comprise at least one of early warning duration, volume or image size.

In a second aspect, the application provides an early warning system, which comprises an early warning terminal and a broadcasting device, wherein the early warning terminal comprises a collecting unit and a processing unit; the acquisition unit is used for continuously receiving distance signals sent by the train in the process of driving to a target point; the processing unit is used for monitoring the distance between the train and a target point in real time according to the distance signal; the processing unit is further used for generating a first warning signal when the distance between the train and the target point is smaller than or equal to a first preset safety distance; the broadcasting device is used for carrying out primary early warning according to the first warning signal, and the primary early warning comprises broadcasting line information and position information of a train in a preset range of a target point; the processing unit is further used for sending a second warning signal when the distance between the train and the target point is smaller than or equal to a second preset safety distance, the second warning signal is used for indicating secondary early warning, and the second preset safety distance is smaller than the first preset safety distance.

In a possible implementation manner of the second aspect, the processing unit is further configured to send a third warning signal when the distance between the train and the target point is less than or equal to a third preset safety distance, where the third warning signal is used to indicate a third-level early warning, and the third preset safety distance is less than the second preset safety distance.

In a possible implementation manner of the second aspect, the early warning system further includes a host and at least one output device; the host is used for controlling the broadcasting device to broadcast the line information and the position information of the train when primary early warning is carried out; the at least one output device is used for sending out a second warning signal or a third warning signal in a mode of indicating lamp flickering and/or warning sound.

In a possible implementation manner of the second aspect, the early warning system further includes at least one remote control device and a microphone; the at least one remote control device is used for generating a remote control instruction, the remote control instruction is used for triggering a target alarm, and the target alarm is an alarm corresponding to the remote control instruction in a plurality of preset alarms corresponding to the secondary early warning; the microphone is used for collecting human voice when three-level early warning is carried out; the host is also used for controlling the broadcasting device to broadcast a target alarm when secondary early warning is carried out; and controlling the broadcasting device to broadcast the voice collected by the microphone when the three-level early warning is carried out.

In a third aspect, the application also provides a computer device. The computer device comprises a memory in which a computer program is stored and a processor, which when executing said computer program performs the steps of the method as described in any of the implementations of the first aspect.

In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any of the implementations of the first aspect as described above.

Compared with the prior art, the embodiment of the application has the advantages that: the early warning method and the early warning system adopt a multi-stage early warning scheme, namely, multiple warnings are given in the process of approaching a train so as to eliminate potential safety hazards possibly existing in single warning to the maximum extent; meanwhile, the form of linkage broadcasting of the broadcasting device is adopted for early warning, and compared with a whistle prompting mode of a safety guardian, the alarm coverage and the receiving crowd are enlarged, so that the protection is more systematic and comprehensive. The application combines multi-level early warning and broadcast early warning, effectively avoids safety accidents caused by environmental influence or personnel negligence, and further ensures stable and safe operation of rail transit and personal safety of railway constructors.

Drawings

Fig. 1 is a schematic view of an application scenario of an early warning method according to an embodiment of the present application;

fig. 2 is a schematic flowchart of an early warning method according to an embodiment of the present disclosure;

fig. 3 is a schematic flowchart of an early warning method according to another embodiment of the present disclosure;

fig. 4 is a schematic flowchart of an early warning method according to another embodiment of the present application;

fig. 5 is a schematic diagram of an early warning method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an early warning system according to another embodiment of the present application;

fig. 7 is a schematic structural diagram of an early warning system according to another embodiment of the present application;

fig. 8 is a schematic layout diagram of an early warning system according to another embodiment of the present application;

fig. 9 is a schematic structural diagram of a computer device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

The embodiment of the application relates to an early warning method of an incoming vehicle early warning method for guaranteeing the safety of operators during the construction of a railway business line, as shown in figure 1, the method is a schematic diagram of an application scene of the method, and the diagram comprises the following steps: target point a, device B and train C. The target point A can be any place where the train needs to be early-warned to approach, such as a construction point, a field station, a station-in station, a maintenance point, an obstacle point and the like, and specifically can comprise a train running line and a certain range on two sides of the line. The equipment B may be, for example, a large road maintenance machine work vehicle or an early warning device provided in a cab of a railcar owner, and the train C may be, for example, a motor car, a high-speed rail, a common train, or a freight train. The equipment B is usually located in the vicinity of the target point a and is usually located on the side from which the train travels. It should be understood that two devices B may also be provided so that trains traveling from both sides of the track to the target point can be monitored by the devices B.

As shown in fig. 1, the train C travels in the direction indicated by the arrow in fig. 1 and gradually approaches the target point a, the device B receives the distance signal sent by the traveling train C, and determines the distance between the train C and the target point a according to the distance signal.

In the traditional scheme, when the distance between the equipment B monitoring train and the target point A is smaller than a preset threshold value, early warning can be automatically sent out in modes of shoulder lamp flickering and the like to remind operating personnel to avoid.

Aiming at the problems, according to the scheme, a plurality of preset safety distance threshold values are set, multi-stage early warning is carried out according to the plurality of distance threshold values, and a plurality of early warning modes are adopted, so that the early warning effectiveness is improved, accidents and disasters are far away from the scene, and the personal safety of railway workers is practically guaranteed.

Fig. 2 shows a flowchart of an implementation of an early warning method provided in an embodiment of the present application, where the method may include the following steps.

S201, continuously receiving a distance signal sent by the train in the process of traveling to a target point.

The target point can be any place needing early warning of train approaching, such as construction points, field stations, stations in stations, overhaul points, obstacle points and the like, and specifically can comprise a train running line and a certain range on two sides of the line.

It should be noted that the distance signal sent by the train in the running process is actually a wireless signal, and may be continuously sent in the running process (including starting but not traveling) of the train, including but not limited to a television signal, a broadcast signal, a radar signal, a communication signal, and the like.

Step S201 may be performed using the acquisition unit 611 in the early warning terminal 610 shown in fig. 6.

In one implementation, the signal reception range of the acquisition unit may be set. For example, the signal receiving range may be set to 0-5 kilometers (km), and the signal source (i.e., the train sending the distance signal) enters the receiving range, and the acquisition unit can receive the signal.

In another implementation mode, after the acquisition unit receives the distance signal, the acquisition unit can record the train number, the route, the ascending and descending, the running speed, the kilometer post and other values contained in the distance signal in real time and automatically store the values in a built-in text document.

And S202, monitoring the distance between the train and the target point in real time according to the distance signal.

The distance between the train and the target point may specifically refer to a distance between an edge closest to one side of the train in the range of the target point and a distance between the train heads.

The real-time monitoring means that the position information of the train in the continuously received distance signals is continuously monitored correspondingly, and the distance between the train and a target point is calculated.

The location information of the train may be current longitude and latitude information of the train, or distance information between the train and the starting station, or location information of a current Global Positioning System (GPS) of the train, and it should be noted that, all information that can obtain a distance between the train and a target point through analysis may be referred to as location information of the train, which is not limited in the embodiment of the present application.

Step S202 can be performed by the processing unit 612 in the early warning terminal 610 shown in fig. 6.

S203, when the distance between the train and the target point is smaller than or equal to a first preset safety distance, generating a first warning signal, and performing primary warning according to the first warning signal.

The first preset safety distance is a track distance between a preset train and a target point, and can be adjusted according to the type of the train and the maximum running speed, for example, when the train is a freight train or a common passenger express train, the first preset safety distance can be set to be 3km and 5km respectively; the first warning signal may include route information and location information of the train; the first-level early warning comprises that a first warning signal is synchronously broadcast through a plurality of audio-video devices within a preset range of a target point.

When the monitored distance between the train and the target point is smaller than or equal to a first preset distance, generating a first warning signal, wherein the first warning signal comprises line information and position information of the train. In one implementation, the first warning signal may be obtained by calling distance information of a real-time record saved in a text document built in the acquisition unit. And then, performing primary early warning according to the generated first warning signal, namely broadcasting the first warning signal in a preset range of a target point by using a broadcasting device through a plurality of audio-visual devices, for example, broadcasting the line information and the position information of a train in a circular range with the target point as a center and the radius of 1km. It should be understood that the pre-warning of the audio/video device may be broadcast only, or may be a combination of an image and broadcast, or may be a combination of light and broadcast, which is not limited in this embodiment of the present application. For example, the display screen may display a red exclamation mark during early warning, and broadcast "the train has arrived for 5km and please note safety" or the train has arrived for 3km and please note safety "or the lights continuously flash during early warning and broadcast simultaneously.

Step S203 can be performed using the early warning terminal 610 and the broadcasting device 620 shown in fig. 6, the step of generating the warning signal can be performed using the processing unit 612 in the early warning terminal 610 shown, and the step of performing early warning according to the warning signal can be performed using the broadcasting device 620. For example, when the processing unit 612 monitors that the distance between the train and the target point is less than or equal to the first preset safety distance, a first warning signal is generated, and then the broadcasting device 620 broadcasts the route information and the position information of the train in response to the warning signal.

And S204, when the distance between the train and the target point is less than or equal to a second preset safety distance, sending a second warning signal.

And the second preset safety distance is smaller than the first preset safety distance. For example, a first preset safe distance is set to be 5km and a second preset safe distance is set to be 3km.

Further, the second preset safe distance may be adjusted according to the type of the train and the maximum driving speed.

The second warning signal is only one indication information for indicating to carry out secondary early warning.

Step S204 may be performed using the processing unit 612 in the early warning terminal 610 shown in fig. 6.

Therefore, the embodiment of the application adopts a multi-stage early warning scheme, namely, multiple warning is carried out in the process of train approaching, so that potential safety hazards possibly existing in single warning are eliminated to the maximum extent, safety accidents caused by environmental influence or personnel negligence are effectively avoided, and stable and safe operation of rail transit and personal safety of railway constructors are further guaranteed.

In one embodiment, the secondary warning in FIG. 2 may be the triggering of a target alarm via a remote command. In one implementation mode, when the distance between the train and the target point is smaller than or equal to a second preset safety distance, a second warning signal is sent to railway workers, after the railway workers receive the second warning signal, specific remote control instructions are sent through a remote control device, and the remote control instructions can point to the broadcast target alarm. The target alarm is an alarm corresponding to the remote control instruction in a plurality of preset alarms corresponding to the secondary early warning, and the preset alarm can be a voice packet recorded or downloaded manually in advance. In one example, the preset alert may be "female announcement: siren + up train have approached, please pay attention to safety "," male voice broadcasts: siren + down train has approached, please pay attention to safety "or" male voice broadcast: siren sound + train have been close, please next track ", and when the remote control instruction that the staff sent went upward the driving for the early warning, broadcaster will report" the female sound is reported: siren + up train has approached, please note safety ", stop after 30 s. The above steps may be performed using the broadcaster 620 in fig. 6.

Fig. 3 is a diagram illustrating an embodiment of the warning method in fig. 2. Fig. 3 may be regarded as a specific example of the method shown in fig. 2, and as shown in fig. 3, the method may further include step S205 in addition to steps S201 to S204 in fig. 2. Since the contents of S201 to S204 can be referred to the related description of the embodiment of fig. 2, for brevity, the description is not repeated here.

And S205, when the distance between the train and the target point is less than or equal to a third preset safety distance, sending a third warning signal.

The third preset safety distance is smaller than the second preset safety distance, namely the third preset safety distance is smaller than the second preset safety distance and smaller than the first preset safety distance. For example, the first preset safety distance is 5km, the second preset safety distance is 3km, and the third preset safety distance is 1km, or the first preset safety distance is 3km, the second preset safety distance is 2km, and the third preset safety distance is 1km. It should be understood that the numerical values in this example are only one example and are not limiting.

The third preset safe distance may be adjusted according to the type of the train and the maximum driving speed.

The third warning signal is used for indicating three-level early warning.

Step S205 can be performed using the processing unit 612 in the early warning terminal 610 shown in fig. 6. And when the processing unit monitors that the distance between the train and the target point is less than or equal to a third preset safety distance, generating a third warning signal.

In one embodiment, the second warning signal or the third warning signal may be issued by means of flashing of an indicator light and/or an alarm sound. In one implementation, the alert signal is emitted by an output device. In an example, the output device may emit the second warning signal or the third warning signal by flashing a warning light, specifically, two warning lights may be disposed in a main cab of the work vehicle, which represent uplink and downlink lines, respectively, and emit blue light when the second warning signal is emitted and red light when the third warning signal is emitted. In another example, the output device may send out the second warning signal or the third warning signal by an audible and visual alarm, specifically, a warning light of the output device flashes and emits a buzzer at the same time. In another example, the output device may send the second warning signal or the third warning signal in a video alarm mode, specifically, the output device includes a small display screen and a speaker, the display screen displays "2" and train line information when sending the second warning signal, the display screen displays "3" and train related information when sending the third warning signal, and the speaker sends a buzzer while displaying.

In one embodiment, the three-stage warning may be a manual call to alarm. For example, when the distance between the train and the target point is less than or equal to a third preset safety distance, a third warning signal is sent to the railway staff, and after receiving the third warning signal, the railway staff can pick up a Microphone (Microphone), that is, a Microphone, to warn all staff on site, and the calling content may be, for example, "coming train on adjacent line, please get off the track immediately".

It should be noted that, in the embodiment of the present application, the early warning types of the early warnings at each level in the multi-level early warning are not limited, so that the early warnings at each level have multiple combination forms, and several combination forms are described as examples below.

In the first implementation mode, the first-stage early warning, the second-stage early warning and the third-stage early warning can be performed in an automatic early warning mode. For easy understanding, the implementation is illustrated below, when the processing unit monitors that the distance between the train and the target point is less than or equal to a first preset safety distance, a first-level early warning is performed, the train is broadcasted for 20 seconds within a preset range of the target point, and the broadcast content is assumed to be "the train still arrives at 3km, please evacuate in time"; when the processing unit monitors that the distance between the train and the target point is smaller than or equal to a second preset safety distance along with the running of the train, secondary early warning is carried out, the train is broadcasted for 30 seconds in the preset range of the target point, the broadcasting volume is increased, and the broadcasting content is assumed to be 'the train still arrives at 2km, please evacuate in time'; when the processing unit monitors that the distance between the train and the target point is smaller than or equal to a third preset safety distance, three-level early warning is carried out, an evacuation alarm is broadcasted in the preset range of the target point, the broadcasting volume is increased again, the evacuation alarm can be voice of evacuation as soon as possible and rhythmic alarm sound, and therefore the protection effect is achieved through three-level automatic early warning. The early warning scheme adopts a three-level automatic early warning mode, multiple broadcast alarms are automatically triggered along with the fact that a train reaches a plurality of preset safety distance thresholds, potential safety hazards which may exist in single early warning are avoided, for example, personnel leave a target point range during early warning, and the condition that the personnel cannot evacuate timely due to the fact that the personnel fail to hear the broadcast of the approaching train is avoided.

In a second implementation manner, the first-level early warning and the second-level early warning can adopt an automatic early warning manner, and the third-level early warning can adopt a manual remote early warning manner. Compared with the early warning scheme in the first implementation mode, the early warning scheme is favorable for avoiding excessive dependence on automatic early warning, and when the broadcasting device cannot automatically broadcast the alarm report due to the failure of the automatic early warning, the broadcasting device can be remotely controlled by using the remote control device to broadcast the built-in alarm. For easy understanding, the implementation is illustrated below, when the processing unit monitors that the distance between the train and the target point is less than or equal to a first preset safety distance, a first-level early warning is performed, the train is broadcasted for 20 seconds within a preset range of the target point, and the broadcast content is assumed to be "the train still arrives at 3km, please evacuate in time"; when the processing unit monitors that the distance between the train and the target point is less than or equal to a second preset safety distance along with the running of the train, secondary early warning is carried out, the train is broadcasted for 30 seconds in the preset range of the target point, the broadcasting volume is increased, and the broadcasting content is assumed to be 'the train still arrives at 2km and needs to be evacuated in time'; when the processing unit monitors that the distance between the train and the target point is smaller than or equal to a third preset safety distance along with the running of the train, a third early warning signal is sent to railway workers, the workers can send a remote control command to the host through the alarm remote controller after receiving the third early warning signal, the host can control the broadcasting device to sound a siren in the preset range of the target point and broadcast the siren after receiving the specific remote control command, the broadcast volume is increased again, and the broadcast content is supposed to be 'a descending train is about to arrive and all personnel are required to evacuate immediately'.

In a third implementation mode, the first-level early warning and the second-level early warning can adopt an automatic early warning mode, and the third-level early warning can adopt an artificial shouting early warning mode. The early warning method reduces the dependence on machines and simultaneously enhances the early warning responsiveness, and when the condition that the first-level early warning and the second-level early warning cannot automatically broadcast the alarm due to equipment failure and other factors occurs, under an emergency condition, workers can perform early warning in a microphone calling mode, so that the personal safety of the constructors is guaranteed. For convenience of understanding, the following distance illustrates the implementation manner, when the processing unit monitors that the distance between the train and the target point is less than or equal to a first preset safety distance, a first-level early warning is performed, the train is broadcasted for 20 seconds within a preset range of the target point, and the broadcast content is assumed to be that "the train still arrives at 3km and please evacuate in time"; when the processing unit monitors that the distance between the train and the target point is less than or equal to a second preset safety distance along with the running of the train, secondary early warning is carried out, the train is broadcasted for 30 seconds in the preset range of the target point, the broadcasting volume is increased, and the broadcasting content is assumed to be 'the train still arrives at 2km and needs to be evacuated in time'; when the processing unit monitors that the distance between the train and the target point is smaller than or equal to a third preset safety distance along with the running of the train, a third early warning signal is sent to a locomotive driver, the driver can shout through a microphone connected with the host in the cab after receiving the third early warning signal, broadcasts and sounds a warning whistle through the broadcasting device, the broadcasting volume is increased again, and the shout content is assumed to be that the train is about to arrive and the train is evacuated immediately.

In a fourth implementation manner, the first-level early warning can adopt an automatic early warning mode, the second-level early warning can adopt a manual remote control early warning mode, and the third-level early warning can adopt a manual shouting early warning mode. The scheme combines three early warning modes, the primary early warning is automatic in the whole process, the rapid early warning can be realized, and the early warning efficiency is improved; after the warning signal is sent out in the second-stage early warning, the subsequent early warning is carried out through manual remote control, the first-stage automatic early warning can be repaired through manual operation when the first-stage automatic early warning fails, and machine sounds are broadcast in the first two stages of early warning; the warning is shout by personnel after sending out warning signal in the tertiary early warning, and what broadcast is the voice, can be close through traditional mode early warning train of shouting when the machine broadcast goes wrong, is applicable to the early warning under the emergency, has very high mobility. The three-stage early warning is respectively suitable for different conditions, faults possibly occurring in the early warning process can be well solved, and the early warning effect is improved.

Therefore, according to the technical scheme, the redundancy control of the early warning process is realized mainly through the multi-stage early warning in various modes, the early warning effect can be effectively improved, and the safety is improved.

In an example of the fourth implementation manner, the primary warning may include line information and location information for controlling a plurality of audio/video devices to broadcast a train; the secondary warning may include triggering a target alarm via a remote command and then controlling the broadcaster to broadcast the target alarm; the tertiary early warning may include voice acquisition using a microphone, followed by control of the broadcaster to broadcast the voice acquired by the microphone. In this example, the broadcasting device includes a plurality of audio/video devices; the target alarm is an alarm corresponding to the remote control instruction in a plurality of preset alarms corresponding to the secondary early warning.

For ease of understanding, the fourth implementation is described below with reference to another example in fig. 4, which includes the following steps. The implementation process examples of other implementation manners may also be described in relation to fig. 4, and only the early warning manner of each stage of early warning needs to be replaced by the early warning manner in the above description, which is not described again.

S401, continuously receiving a distance signal sent by a train in the process of driving to a target point by a collecting device;

s402, monitoring the distance between the train and a target point in real time by the processing unit according to the distance signal;

s403, when the distance between the train and the target point is monitored to be smaller than or equal to a first preset safety distance, performing primary early warning, broadcasting for 20 seconds in a preset range of the target point, and assuming that the broadcast content is 'the train still arrives for 3km, please stop the operation, and begin to evacuate';

s404, when the processing unit monitors that the distance between the train and the target point is smaller than or equal to a second preset safety distance along with the running of the train, a second early warning signal is sent to railway workers;

and S405, after receiving the second early warning signal, the working personnel can send a remote control command to the host through the remote control device, after receiving the specific remote control command, the host can control the broadcasting device to broadcast within a preset range of a target point for 30 seconds, the broadcasting volume is increased again, and the broadcasting content is assumed to be 'that a train is about to arrive and all personnel are required to evacuate immediately'.

S406, when the processing unit monitors that the distance between the train and the target point is smaller than or equal to a third preset safety distance, a third early warning signal is sent to a locomotive driver;

s407, the driver can use the microphone connected with the host computer in the cab to call after receiving the third early warning signal, and broadcast through the broadcaster, and the broadcast volume increases once more, simultaneously sounds the siren.

The shouting can continue: "evacuation of all people at once".

Therefore, three layers of early warning are deployed according to different distances between a train and a target point, each layer of early warning can adopt different warning modes, and multiple layers are combined with multiple functions, so that possible flaws of single-layer and single-scheme early warning are made up, effectiveness and comprehensiveness of early warning are further improved, and railway traffic safety is guaranteed practically.

In one embodiment, when the acquisition unit performs the step S201 of receiving the distance signal sent by the train during the driving process, the signal receiving range may be set to different sizes according to the preset safe distance, and is always greater than or equal to the range where the preset safe distance is located. Preferably, the signal receiving range of the acquisition unit is gradually reduced as the train approaches the destination. For example, the first preset safety distance is set to be 3km, the second preset safety distance is set to be 2km, the third preset safety distance is set to be 1km, and when the train approaches the target point but the distance between the train and the target point is not less than the first preset distance, the signal receiving range of the acquisition unit is set to be a circular area with the radius of 5km; when the distance between the train and the target point is smaller than or equal to a first preset distance and primary early warning is triggered, the signal receiving range of the acquisition unit is reduced to a circular area with the radius of 3 km; and when the distance between the train and the target point is less than or equal to a second preset safety distance and secondary early warning is triggered, the signal receiving range is further reduced to a circular area with the radius of 1.5 km. When the target point is a station such as an intra-station and the like where trains frequently come and go, the method for adjusting the signal receiving range according to the preset safe distance in the embodiment is adopted, the signal receiving range is narrowed as the trains approach the target point, interference of signals sent by other trains when the acquisition unit receives the distance signals can be effectively reduced, difficulty and complexity of the acquisition unit in recognizing and processing the distance signals of the trains are reduced, and therefore the method can react to the approaching trains more quickly and give warning signals, and early warning time is shortened.

In one embodiment, the alarms of the early warnings at each level can be set to different volumes, and the volume of the alarms is increased from the first-level early warning to the second-level early warning to the third-level early warning. For example, the volume of the first-stage warning is 60%, the volume of the second-stage warning is 80%, and the volume of the third-stage warning is 100%, and for example, the volume of the first-stage warning is 50 db, the volume of the second-stage warning is 65 db, and the volume of the third-stage warning is 80 db.

In one embodiment, the alarms of the early warnings at each stage may last for different durations, and preferably, the alarm time of the secondary early warning is longer than that of the primary early warning. For example, the first-level warning has a warning time of 30 seconds, the second-level warning has a warning time of 1 minute, and the third-level warning has a warning time of 30 seconds. It should be understood that the distance between the train and the target point is short in the three-level early warning, so that the alarm time does not need to be set to be too long.

In one embodiment, when the alarms of all levels of early warning are early warned by using the sirens, the ringing frequency of different sirens can be set. Preferably, the whistle frequency of the siren is more and more rapid from the first-level early warning to the second-level early warning to the third-level early warning. For example, the first-stage early warning siren sounds for 10 seconds and stops for 10 seconds, the second-stage early warning siren sounds for 10 seconds and stops for 5 seconds, and the third-stage early warning siren continuously sounds until the alarm stops.

In one embodiment, when the warning of each stage of warning uses the display screen for warning, the warning images with different sizes can be set. Preferably, the size of the early-warning image is larger and larger, and the color is more and more vivid from the first-level early warning to the second-level early warning to the third-level early warning. For example, the first level early warning display screen displays "please evacuate immediately" and the second level early warning display screen displays "evacuate!in a larger font! | A And when the three-level early warning is carried out, the display screen displays an oversized red exclamation mark and continuously flickers.

In one embodiment, at least one parameter of the primary warning, the secondary warning, or the tertiary warning may be adjusted according to the type of the target point, where the parameter includes at least one of a warning duration, a volume, or an image size.

For example, when the target point is a field construction point, heavy mechanical construction can generate large noise, and guidance and management of construction responsible personnel on construction can influence the operation personnel to hear and clearly alarm and evacuate timely, and under the application scene, the alarm volume of multi-stage early warning can be properly increased to attract the attention of the personnel with high volume; meanwhile, because the train on the business line runs at normal speed, the construction risk around the line is very high, and the operator needs to evacuate at the fastest speed after receiving the early warning, so the early warning duration does not need to be set to be overlong, and overlong alarm not only can reduce the emergency sense of evacuation of the operator, but also can cause the train to be very close to the end of the alarm and increase the risk; in addition, field construction is for indoor environment, and the illumination is sufficient or even dazzling daytime, and it is not clear enough to make the early warning image after the light shines reflection on the display screen, so can suitably increase the size and the vividness of early warning image to this arouses operating personnel's attention.

For another example, when the target point is a station inside a station, the environment is quiet relative to a construction point, and the noise pollution is small, so that the broadcasting volume of the early warning can be properly reduced under the condition of meeting the actual requirement, and the interference of the excessive warning volume on the next station can be avoided; meanwhile, the train entering the station can slow down the speed, so that the early warning urgency of the station is not so high compared with that of a construction point, and the early warning duration can be properly increased under the condition of ensuring the safety requirement; in addition, the station compares in the field, and direct light is less, and whole environment is dark slightly, so under the condition that satisfies actual need, can suitably turn down the size of the early warning image on the display screen in order to reduce unnecessary wasting of resources.

In order to facilitate understanding of the above technical solution, an actual scenario of applying the warning method provided in the present application will be described with reference to a specific embodiment in fig. 5.

In this embodiment, the target point a is a construction point adjacent to a railway business line, and each machine and railway staff is performing construction work at the point a. By adopting the early warning method, the early warning system is arranged in the main cab of each mechanical working vehicle for construction, the original 24 Volt (Volt, V) direct current of the locomotive is utilized, and the power is controlled by the power supply in the locomotive. The early warning system comprises a host, a high-power horn, an intelligent flashlight and a microphone, wherein a field construction person in charge and a field protector carry an alarm remote controller and the intelligent flashlight. The early warning terminal in the embodiment is an intelligent flashlight which is a device integrating the functions of an acquisition unit and a processing unit, and the acquisition unit can receive broadcast signals sent by trains in a circular range with a construction point as a center and a radius of 1km-5 km; the broadcasting device in the embodiment is a high-power horn arranged on the roof of a vehicle, and in order to prevent the horn from falling off in the driving process, the horn is arranged on a fixed bracket which is fixed by a stainless steel anti-falling nut; the output device in this embodiment is also an intelligent flashlight, and the intelligent flashlight includes a speaker and a display screen, and can send out a second warning signal or a third warning signal in a display or ringing manner. A first preset safety distance D, a second preset safety distance C and a third preset safety distance B of the early warning system are respectively set to be 3km, 2km and 1km.

At some point, a freight train on the downlink travels from a distant location to a construction site a (an example of a target point), which periodically transmits a broadcast signal (an example of a distance signal) of 821.2375MHz on the way. After the train runs into the signal receiving range of the acquisition unit, the broadcast signal sent by the train is continuously received, and the acquisition unit transmits the received broadcast signal to the processing unit for processing. When the train is analyzed by the processing unit to be driven to D (an example of a first preset safety distance), a high-power horn (an example of a broadcasting device) at the top of each mechanical working vehicle simultaneously starts to broadcast 'the arrival of a descending train is still 3km, safety is noticed', the broadcasting time is 20 seconds, and the broadcasting process is an example of primary early warning. And after hearing the broadcast, the field constructor begins to evacuate from the construction site around the line. When the train continues to run to C (an example of a second preset safety distance), the intelligent flashlight (an example of an output device) arranged in the driving of the operation vehicle owner and the loudspeaker of the intelligent flashlight carried by the on-site construction responsible person and the guardian sound, 2 is displayed on the display screen and flashes red blue light, when the responsible person or the guardian notices the alarm signal, the down button on the portable alarm remote controller is pressed, the host machine receives the remote control command and controls the high-power horn to broadcast the target alarm, namely the down train after the siren sound broadcast (man sound) is played is close to notice safety, the down train stops after 30 seconds, and the broadcasting process is an example of secondary early warning. When the train runs to B (an example of a third preset safety distance), the loudspeaker of the intelligent flashlight emits louder sound and flickers in a 3 character form on the display screen, at the moment, a driver of the working vehicle takes the standing horse up a microphone connected with the host machine through MIC1 in the cab, broadcasts and shouts 'a downstream vehicle, all the personnel immediately go off the lane', and the broadcasting process is an example of three-level early warning. In conclusion, the effect of comprehensive early warning before the construction line comes is achieved through the three-layer automatic and manual combined early warning method.

The foregoing mainly describes an early warning method according to an embodiment of the present application with reference to the accompanying drawings. It should be noted that all the numerical values presented above are only for example and do not limit the present application in particular. It should also be understood that, although the steps in the flowcharts relating to the embodiments described above are shown in sequence, the steps are not necessarily executed in the sequence shown in the figures. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps. An apparatus according to an embodiment of the present application will be described with reference to the accompanying drawings. For brevity, when the apparatus is introduced below, appropriate omissions will be made, and relevant contents may refer to relevant descriptions in the above method, and descriptions will not be repeated.

Fig. 6 shows a schematic structural diagram of an early warning system provided in an embodiment of the present application, as shown in fig. 6, the early warning system 600 may include an early warning terminal 610 and a broadcasting device 620, where the early warning terminal 610 may include a collecting unit 611 and a processing unit 612.

The acquisition unit 611 is configured to receive a distance signal sent by a train in a running process;

the processing unit 612 is configured to monitor a distance between the train and the target point in real time according to the distance signal, generate a first warning signal when the distance between the train and the target point is less than or equal to a first preset safety distance, and generate a second warning signal when the distance between the train and the target point is less than or equal to a second preset safety distance;

and the broadcasting device 620 is used for performing primary early warning according to the first warning signal. The primary early warning includes broadcasting the route information and the position information of the train within a preset range of a target point.

In one embodiment, the processing unit 612 can be further configured to send a third warning signal when the distance between the train and the target point is less than or equal to a third preset safety distance. The third warning signal is used for indicating three-level early warning, and the third preset safety distance is smaller than the second preset safety distance.

In one embodiment, as shown in fig. 7, the warning system 600 may further include at least one output device 640, and the at least one output device 640 may be configured to emit the second warning signal or the third warning signal by means of flashing of an indicator light and/or an alert sound. Specifically, when the processing unit 612 monitors that the distance between the train and the target point is less than or equal to the second/third preset safety distance and generates the second/third warning signal, the output device 640 emits the second/third warning signal in a manner of flashing an indicator light and/or a warning sound. It should be understood that the output device 640 need not have a function of collecting or processing information, but only needs to execute any function of emitting the second warning signal or the third warning signal generated by the processing unit 612 in a form of lighting or sounding so as to make the warning signal noticeable to the staff.

In one possible implementation manner, the output device 640 may be a part of the structure of the warning terminal 610, that is, the warning terminal 610 includes the output device 640. In another possible implementation, the output device 640 may exist independently of the early warning terminal 610. In one example, the output device 640 may be a warning light. Specifically, two warning lights can be arranged in a main cab of the working vehicle, which respectively represent an uplink line and a downlink line, and the warning light lights up blue light when a second warning signal is sent out, and lights up red light when a third warning signal is sent out, and similarly, the warning lights can be equipped on the bodies of related personnel outside the vehicle, such as a protector, a construction person and the like, and send out the corresponding blue light or red light when a warning signal is sent out; optionally, two warning lights can be arranged in a main cab of the working vehicle and represent the second-level warning and the third-level warning respectively, the warning light representing the second-level warning is on when the second warning signal is sent out, and the warning light representing the third-level warning is on when the third warning signal is sent out. In another example, the output device 640 may be a small display screen, and the display screen displays "2" and train route information when the second warning signal is sent out, and displays "3" and train related information when the third warning signal is sent out, and the display screen can ring to attract the attention of people. In particular, the display screen may be integrated on a smart watch. In another example, the output device 640 may be an alarm, which may be determined by the staff to send out the warning signal according to the number of rings or the voice content.

In one embodiment, as shown in fig. 7, the early warning system 600 may further include a host 630 connected to the broadcasting device 620. In one implementation, the host 630 may be configured to control the broadcasting device 620 to broadcast the route information and the location information of the train when the primary warning is performed.

In one embodiment, as shown in fig. 7, the warning system 600 may further include at least one remote control 650 for triggering a target alarm through remote control instructions. The remote control device 650 is carried by the relevant railway staff and has keys for sending remote control commands. When receiving the second warning signal sent by the output device 640, the operator presses a preset key on the remote control device 650 to send a corresponding remote control command, and when receiving the command, the host 630 selects one of the built-in preset alarms (hereinafter referred to as a target alarm) corresponding to the command, and then controls the broadcasting device 620 to broadcast the target alarm, thereby implementing the second-stage warning. Illustratively, when a construction guardian and a construction responsible person see that a shoulder lamp representing an uplink emits blue light, the construction guardian and the construction responsible person know that the blue light is a second early warning signal, immediately press an uplink button on a remote control device, and after receiving a remote control command, a host controls a broadcasting device to broadcast siren and (female sound broadcasting) that an uplink train approaches to please pay attention to safety, and the early warning is finished.

In one embodiment, the host 630 may be further configured to receive a remote control command sent by the remote control device, select a corresponding target alarm, and control the broadcasting device 620 to broadcast the target alarm when performing the secondary warning. The target alarm may be one of a plurality of preset alarms built in the host corresponding to the remote control command, and the preset alarm may be an alarm voice packet recorded in advance manually or downloaded from the internet.

In one embodiment, as shown in fig. 7, the warning system 600 may further include a microphone 660, and the microphone 660 is used for voice collection when performing three-stage warning. The microphone 660 may be connected to the host 630 via an audio line.

In one embodiment, the host 630 is further configured to control the broadcasting device 620 to broadcast the voice collected by the microphone when performing the three-level warning.

It should be understood that the above is only an example of the composition of the warning system 600, and in practical applications, the warning system 600 may include some or all of the units/devices in fig. 7 as long as the technical solution of the present application can be implemented.

In one example, the warning system 600 of the present application may further include a host 630 and at least one output device 640 on the basis of the devices included in fig. 6. The host 630 is used to control the broadcasting device 620 to broadcast the line information and the location information of the train when performing the primary early warning. The at least one output device 640 is configured to send out the second warning signal or the third warning signal by means of flashing of the indicator light and/or an alert sound.

In another example, the early warning system 600 of the present application may include at least one remote control 650, a microphone 660, and a host 630. The at least one remote control 650 is used to generate remote control commands. The remote control instruction is used for triggering a target alarm, and the target alarm is an alarm corresponding to the remote control instruction in a plurality of preset alarms corresponding to the secondary early warning. This microphone 660 is used for, when carrying out tertiary early warning, carry out the people's voice and gather. In this case, the host 630 is further configured to control the broadcasting device 620 to broadcast the target alarm when performing the secondary warning, and to control the broadcasting device 620 to broadcast the voice collected by the microphone 660 when performing the tertiary warning.

Fig. 8 shows a layout diagram of the warning system according to an embodiment of the present application, and the following describes a connection relationship and an operation process of each part of the warning system in conjunction with the embodiment: the adjacent-line-coming vehicle warning lighting terminal 81 corresponds to the warning terminal 610 in fig. 7, the base 82 corresponds to the base 630 in fig. 7, the warning remote controller 83 corresponds to the remote control 650 in fig. 7, the microphone 84 in the cab of the work vehicle corresponds to the microphone 660 in fig. 7, and the horn 85 corresponds to the broadcasting device 620 in fig. 7.

The adjacent line coming vehicle early warning lighting terminal 81 installed in the cab of the operation vehicle owner is connected with the host 82, when the adjacent line coming vehicle early warning lighting terminal 81 monitors that the distance between the train and a target point is smaller than or equal to a preset safety distance, information is transmitted to the host 82, and the host 82 controls the output device to send out a warning signal after receiving the information; during primary early warning, the host 82 is connected with the horn 85 and can control the horn 85 to broadcast the line information and the position information of the train; during secondary early warning, the warning remote controller 83 can transmit a remote control instruction to the host 82, and after receiving the remote control instruction, the host 82 can control the horn 85 to broadcast a target warning corresponding to the remote control instruction which is built in the host 82; during the three-level early warning, the microphone 84 of the cab is connected with the host 82, the operator in the cab collects the voice by using the microphone 84, and the host 82 controls the horn 85 to broadcast the voice alarm collected by the microphone 84.

It should be noted that, because the contents of information interaction, execution process, and the like between the above units are based on the same concept, specific functions and technical effects thereof can be found in the method embodiment section, and are not described herein again.

It should be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is only used for illustration, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

Fig. 9 is a schematic structural diagram of a computer device according to an embodiment of the present application. As shown in fig. 9, the computer apparatus 1000 includes: at least one processor 1003 (only one shown in fig. 9), a memory 1001, and a computer program 1002 stored in the memory 1001 and executable on the processor 1003. When the processor 1003 executes the computer program 1002, steps S201 to S204 in the above-described embodiment of the warning method of fig. 2 are implemented; alternatively, the processor 1003, when executing the computer program 1002, implements the functions of the devices 610 to 620 in the embodiment of the warning system 600 in fig. 6.

The Processor 1003 may be a Central Processing Unit (CPU), and the Processor 1003 may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The storage 1001 may be an internal storage unit of the terminal device 1000 in some embodiments, for example, a hard disk or a memory of the terminal device 1000. In other embodiments, the memory 1001 may also be an external storage device of the terminal device 1000, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are equipped on the terminal device 1000. Further, the memory 1001 may also include both an internal storage unit and an external storage device of the terminal device 1000. The memory 1001 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 1001 may also be used to temporarily store data that has been output or is to be output.

The embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above-mentioned method embodiments.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/network device and method may be implemented in other ways. For example, the above-described apparatus/network device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In the description above, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present application, and they should be construed as being included in the present application.

Claims (10)

1. An early warning method, comprising:

continuously receiving a distance signal sent by a train in the process of driving to a target point;

continuously monitoring the distance between the train and the target point according to the distance signal;

when the distance between the train and the target point is smaller than or equal to a first preset safety distance, generating a first warning signal;

performing primary early warning according to the first warning signal, wherein the primary early warning comprises broadcasting the line information and the position information of the train through a broadcasting device within a preset range of the target point;

and when the distance between the train and the target point is less than or equal to a second preset safety distance, sending a second warning signal, wherein the second warning signal is used for indicating secondary early warning, and the second preset safety distance is less than the first preset safety distance.

2. The method of claim 1, further comprising:

and when the distance between the train and the target point is less than or equal to a third preset safety distance, sending a third warning signal, wherein the third warning signal is used for indicating three-level early warning, and the third preset safety distance is less than the second preset safety distance.

3. The method of claim 2, wherein the broadcast device comprises a plurality of audiovisual devices;

carry out first grade early warning according to first warning signal includes:

controlling the plurality of audio-visual devices to broadcast the line information and the position information of the train;

when the secondary early warning is carried out, the method further comprises the following steps:

triggering a target alarm through a remote control instruction, wherein the target alarm is an alarm corresponding to the remote control instruction in a plurality of preset alarms corresponding to the secondary early warning;

controlling the broadcaster to broadcast the target alert;

when the three-level early warning is carried out, the method further comprises the following steps:

collecting human voice by using a microphone;

and controlling the broadcasting device to broadcast the voice collected by the microphone.

4. The method according to claim 2 or 3, wherein the preset safety distance is set according to the type of the train and a maximum driving speed;

the method further comprises the following steps:

and adjusting parameters of at least one of the primary early warning, the secondary early warning or the tertiary early warning according to the type of the target point, wherein the parameters comprise at least one of early warning duration, volume or image size.

5. The early warning system is characterized by comprising an early warning terminal and a broadcasting device, wherein the early warning terminal comprises a collecting unit and a processing unit;

the acquisition unit is used for continuously receiving distance signals sent by the train in the process of driving to a target point;

the processing unit is used for continuously monitoring the distance between the train and the target point according to the distance signal; when the distance between the train and the target point is smaller than or equal to a first preset safety distance, generating a first warning signal;

the broadcasting device is used for carrying out primary early warning according to the first warning signal, and the primary early warning comprises broadcasting the line information and the position information of the train in a preset range of the target point;

the processing unit is further used for sending a second warning signal when the distance between the train and the target point is smaller than or equal to a second preset safety distance, the second warning signal is used for indicating secondary early warning, and the second preset safety distance is smaller than the first preset safety distance.

6. The system of claim 5, wherein the processing unit is further configured to: and when the distance between the train and the target point is less than or equal to a third preset safety distance, sending a third warning signal, wherein the third warning signal is used for indicating three-level early warning, and the third preset safety distance is less than the second preset safety distance.

7. The system of claim 6, further comprising a host and at least one output device;

the host is used for controlling the broadcasting device to broadcast the line information and the position information of the train when the primary early warning is carried out;

and the at least one output device is used for sending the second warning signal or the third warning signal in a mode of indicating lamp flickering and/or warning sound.

8. The system of claim 7, further comprising at least one remote control device and a microphone;

the at least one remote control device is used for generating a remote control instruction, the remote control instruction is used for triggering a target alarm, and the target alarm is an alarm corresponding to the remote control instruction in a plurality of preset alarms corresponding to the secondary early warning;

the microphone is used for acquiring human voice when the three-stage early warning is carried out;

the host is also used for controlling the broadcasting device to broadcast the target alarm when the secondary early warning is carried out; and when the three-level early warning is carried out, controlling the broadcasting device to broadcast the voice collected by the microphone.

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the method of any of claims 1 to 4 when executing the computer program.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 4.

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