CN117141406A - Vehicle falling water sensing method and system and automobile - Google Patents
Vehicle falling water sensing method and system and automobile Download PDFInfo
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- CN117141406A CN117141406A CN202311289368.XA CN202311289368A CN117141406A CN 117141406 A CN117141406 A CN 117141406A CN 202311289368 A CN202311289368 A CN 202311289368A CN 117141406 A CN117141406 A CN 117141406A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 287
- 238000000034 method Methods 0.000 title claims abstract description 51
- 230000008447 perception Effects 0.000 claims description 12
- 206010013647 Drowning Diseases 0.000 claims description 11
- 241000976416 Isatis tinctoria subsp. canescens Species 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- 238000002592 echocardiography Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R2021/0002—Type of accident
- B60R2021/0016—Fall in water
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to the technical field of automobile control, in particular to a vehicle water falling sensing method and system and an automobile, wherein the vehicle water falling sensing method comprises the following steps: detecting the loop state of the conductive water level gauge; when the loop of the conductive water level gauge is conducted, detecting the current water pressure value by using the pressure water level gauge; and when the current water pressure values are all larger than the first preset water pressure value within the preset time period, judging that the vehicle falls into water. According to the invention, the conductive water level gauge is arranged at the position with the height higher than the maximum wading depth of the vehicle, and the pressure water level gauge is arranged at the position with the height lower than the lowest point of the engine or the electric drive, so that when the loop of the conductive water level gauge is conducted, the pressure water level gauge is used for detecting the current water pressure value, and judging whether the vehicle falls into water or not according to the current water pressure value, thereby improving the accuracy of water falling sensing, avoiding misjudgment of the water level height, and opening the vehicle, so that the problem of water accumulation in the vehicle is caused.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to a vehicle water falling sensing method and system and an automobile.
Background
An automotive anti-drowning device is a technology intended to provide safety protection to the occupants of a vehicle. When the vehicle senses that the surrounding water accumulation depth reaches a dangerous level, the vehicle can automatically open the side window and the tail door so that passengers can escape urgently. However, there are some drawbacks to this technique, and further improvements are needed.
For example, the accuracy of hazard discrimination is to be improved. The current technology still has a certain error rate in judging whether the accumulated water threatens the safety of passengers in the vehicle. This may result in that during storm conditions, the unmanned car in the parking lot opens the window tail gate itself, causing water to accumulate in the car.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle water falling sensing method, a vehicle water falling sensing system and a vehicle, and aims to solve the technical problem that in the prior art, a vehicle is opened to cause water accumulation in the vehicle due to misjudgment of the water level of a drowning prevention device of the vehicle.
In order to achieve the above purpose, the invention provides a vehicle water fall sensing method, which is applied to a vehicle water fall sensing system, and comprises a conductive water level gauge and a pressure water level gauge, wherein the installation height of the conductive water level gauge is higher than the maximum wading depth of a vehicle, and the installation height of the pressure water level gauge is lower than the lowest point of an engine or an electric drive;
the vehicle water falling sensing method comprises the following steps:
detecting the loop state of the conductive water level gauge;
when the loop of the conductive water level gauge is conducted, detecting the current water pressure value by using the pressure water level gauge;
and when the current water pressure values are all larger than the first preset water pressure value within the preset time period, judging that the vehicle falls into water.
Optionally, when the current water pressure values are all greater than the first preset water pressure value within the preset time period, after confirming that the vehicle falls into water, the method further includes:
if the current water pressure values are lower than the second preset water pressure value within the preset time period, detecting the loop state of the conductive water level gauge again;
and if the loop of the conductive water level gauge is disconnected, judging that the vehicle leaves the water area.
Optionally, if the circuit of the conductive water level gauge is disconnected, the method further comprises, after determining that the vehicle leaves the water area:
if the current water pressure value is not greater than the first preset water pressure value and not less than the second preset water pressure value within the preset time period, acquiring the values of the roll angle and the pitch angle of the vehicle by using an inertial navigation module;
and when the values of the roll angle and the pitch angle of the vehicle exceed the preset angle threshold value, judging that the vehicle falls into water.
Optionally, after the determining that the vehicle falls into water, the method further includes:
outputting an emergency command for controlling the vehicle to open windows, sunroofs and tail gates and an emergency call request comprising: and uploading the vehicle position information and the attitude information to an accident emergency center through the communication domain controller.
Optionally, after the acquiring the values of the roll angle and the pitch angle of the vehicle by using the inertial navigation module, the method further comprises:
and when the values of the roll angle and the pitch angle of the vehicle are both within a preset angle threshold value, determining that the vehicle wades.
Optionally, the vehicle water fall sensing system further comprises an ultrasonic sensor, wherein the ultrasonic sensor is installed below the vehicle rearview mirror;
when the values of the roll angle and the pitch angle of the vehicle are both within the preset angle threshold, the method further comprises the following steps of:
detecting a current water level value by using the ultrasonic sensor when the vehicle wades;
when the water level value is larger than a preset water level value, the current water level value of the vehicle is displayed through the vehicle entertainment host computer, and the vehicle entertainment host computer is controlled to give an alarm.
Optionally, the vehicle water fall sensing system further comprises an underwater sonar, wherein the underwater sonar is installed in front of the front wheels of the vehicle;
when the values of the roll angle and the pitch angle of the vehicle are within the preset angle threshold, the method further comprises the following steps of:
when the vehicle wades, monitoring the road environment ahead by using the underwater sonar;
when the front road ground falling difference value is larger than the preset falling difference value, the front road ground falling difference value is displayed through the vehicle entertainment host computer, and the vehicle entertainment host computer is controlled to give an alarm.
In addition, in order to achieve the above object, the present invention also proposes a vehicle water fall sensing system, the system comprising: a car body domain controller, a conductive water level gauge and a pressure water level gauge;
the automobile body domain controller is connected with the conductive water level gauge and the pressure water level gauge respectively.
Optionally, the system further comprises: an ultrasonic sensor and underwater sonar;
the ultrasonic sensor and the underwater sonar are respectively connected with the vehicle body domain controller.
In addition, in order to achieve the above object, the present invention also proposes an automobile comprising a vehicle drowning perception system as described above.
The invention provides a vehicle water falling sensing method, which comprises the following steps: detecting the loop state of the conductive water level gauge; when the loop of the conductive water level gauge is conducted, detecting the current water pressure value by using the pressure water level gauge; and when the current water pressure values are all larger than the first preset water pressure value within the preset time period, judging that the vehicle falls into water. According to the invention, the conductive water level gauge is arranged at the position with the height higher than the maximum wading depth of the vehicle, and the pressure water level gauge is arranged at the position with the height lower than the lowest point of the engine or the electric drive, so that when the loop of the conductive water level gauge is conducted, the pressure water level gauge is used for detecting the current water pressure value, and judging whether the vehicle falls into water or not according to the current water pressure value, thereby improving the accuracy of water falling sensing, avoiding misjudgment of the water level height, and opening the vehicle, so that the problem of water accumulation in the vehicle is caused.
Drawings
FIG. 1 is a flow chart of a first embodiment of a vehicle drowning perception method according to the present invention;
FIG. 2 is a flow chart of a second embodiment of a vehicle drowning perception method according to the present invention;
FIG. 3 is a flow chart of a third embodiment of a vehicle drowning perception method according to the present invention;
FIG. 4 is a graph showing the position of the conductive water level gauge, the pressure water level gauge, the ultrasonic sensor and the underwater sonar of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a first embodiment of a vehicle water-fall sensing method according to the present invention, and a first embodiment of a vehicle water-fall sensing method according to the present invention is provided based on fig. 1.
In a first embodiment, the vehicle water fall sensing method is applied to a vehicle water fall sensing system, and the vehicle water fall sensing system comprises a conductive water level gauge and a pressure water level gauge, wherein the installation height of the conductive water level gauge is higher than the maximum wading depth of a vehicle, and the installation height of the pressure water level gauge is lower than the lowest point of an engine or an electric drive;
the conductive water level gauge is used for determining the water level by measuring the conduction condition of the current. The principle is based on the conductive property of water, and when the water level reaches a certain height, the conductive water level meter conducts current. Referring to fig. 4, the conductive water level gauge in this embodiment may be disposed in the front cabin at a mounting height slightly higher than a maximum wading depth of the vehicle, which refers to a maximum depth at which the vehicle can travel in water.
The pressure type water level gauge measures the water level by utilizing the principle of hydrostatic pressure. It determines the water level by sensing the change of the water pressure. When the vehicle is immersed in water, the pressure of the water changes, the pressure type water gauge can detect the change, and when the water level rises to reach a certain pressure, the pressure type water gauge can generate corresponding signals. Referring to fig. 4, in this embodiment, the pressure gauge may be disposed at a front nacelle, and the mounting height may be slightly lower than the lowest point of the engine or the electric motor.
The vehicle water falling sensing method comprises the following steps:
step S10: and detecting the loop state of the conductive water level gauge.
The execution body of the present embodiment may be a body domain controller in a vehicle.
It will be appreciated that when the sensor in the conductive water level gauge has been submerged, the conductive water level gauge loop is turned on, at which point the body controller may be fully awakened to activate the vehicle water fall sensing system via the body controller.
Step S20: and when the loop of the conductive water level gauge is conducted, detecting the current water pressure value by using the pressure water level gauge.
It should be noted that when the loop of the conductive water level gauge is turned on, the vehicle can be considered to be in water at the moment, and the complete vehicle water-falling sensing system is started immediately at the moment. The pressure type water gauge starts to collect water pressure according to fixed frequency and transmits the water pressure to the vehicle body domain controller, and the vehicle body domain controller continuously detects the change of the water pressure value.
Step S30: and when the current water pressure values are all larger than the first preset water pressure value within the preset time period, judging that the vehicle falls into water.
It should be noted that the preset duration refers to a time period set when the vehicle enters the water, and is used for monitoring the water pressure value and determining whether the vehicle falls into the water. The time period can be a fixed time period which is set in advance, or can be dynamically adjusted according to specific situations and needs.
The first preset water pressure value may be a reference water pressure threshold set in the water of the vehicle, and when the vehicle enters the water, the surrounding water pressure will be significantly increased, exceeding the first preset water pressure value, so as to trigger the determination of the vehicle falling into water.
It should be appreciated that by using a pressure type water level gauge, the accuracy of vehicle water fall detection can be improved, and the possible misjudgment of the conductive water level gauge is avoided. For example, suppose the vehicle passes through a large sump, which is mixed with some electrolyte, such as brine. In this case, since the conductive water gauge is measured based on the electrical conductivity of the liquid, when the vehicle enters the brine, the brine may cause an increase in the electrical conductivity of the liquid. This may lead to the conductive level gauge erroneously detecting a high level, thereby erroneously determining that the vehicle has fallen into water.
In a first embodiment, a vehicle water fall sensing method is provided, including: detecting the loop state of the conductive water level gauge; when the loop of the conductive water level gauge is conducted, detecting the current water pressure value by using the pressure water level gauge; and when the current water pressure values are all larger than the first preset water pressure value within the preset time period, judging that the vehicle falls into water. According to the embodiment, the conductive water level gauge is arranged at the position with the height higher than the maximum wading depth of the vehicle, the pressure water level gauge is arranged at the position with the height lower than the lowest point of the engine or the electric drive, so that when a loop of the conductive water level gauge is conducted, the current water pressure value is detected by the pressure water level gauge, and whether the vehicle falls into water or not is judged through the current water pressure value, the accuracy of water falling sensing is improved, the misjudgment of the water level height is avoided, the vehicle is opened, and the problem of water accumulation in the vehicle is caused.
Referring to fig. 2, fig. 2 is a schematic flow chart of a second embodiment of the vehicle water-logging sensing method according to the present invention, and based on the first embodiment shown in fig. 1, the second embodiment of the vehicle water-logging sensing method according to the present invention is proposed.
In a second embodiment, the step S30 includes:
step S40: and if the current water pressure value is lower than a second preset water pressure value within the preset time period, detecting the loop state of the conductive water level gauge again.
It should be noted that the second preset water pressure value is also a reference water pressure threshold value for detecting that the vehicle falls into water, and the water pressure threshold value is generally lower. If the measured current water pressure values are all lower than the second preset water pressure value, for example if the measured current water pressure values are all 0 and for a certain period of time, this may mean that the vehicle is not actually falling into water or has left the water, a further detection of the loop state of the conductive water level gauge is required.
Step S50: and if the loop of the conductive water level gauge is disconnected, judging that the vehicle leaves the water area.
It should be noted that when the loop of the conductive water level gauge is disconnected, that is, the sensor in the conductive water level gauge is separated from the water, it may be determined that the vehicle has left the water area, and at this time, the vehicle water fall sensing system may be turned off.
Further, in this embodiment, the step S50 further includes:
step S60: and if the current water pressure value is not greater than the first preset water pressure value and not less than the second preset water pressure value within the preset time period, acquiring the values of the roll angle and the pitch angle of the vehicle by using an inertial navigation module.
It should be noted that, if the current water pressure value is not greater than the first preset water pressure value and not less than the second preset water pressure value within the preset time period, it is indicated that the current water pressure value is between two preset water pressure thresholds. This means that there is currently a certain water pressure value, but not to the extent that the water pressure value when the vehicle falls into water. At this point, the vehicle may be accidentally turned over into the ditch, and although the water pressure has not reached the level of falling water, there may be potential hazards and risks.
Step S70: and when the values of the roll angle and the pitch angle of the vehicle exceed the preset angle threshold value, judging that the vehicle falls into water.
Note that the roll angle refers to a rotation angle of the vehicle about a vertical axis, that is, an angle to which the vehicle is inclined to one side. Pitch angle refers to the angle of rotation of the vehicle about the transverse axis, i.e. the angle at which the vehicle is tilted back and forth. The preset angle threshold may be a maximum angle of roll angle and pitch angle allowed when the vehicle is running normally.
It will be appreciated that when the values of the roll and pitch angles of the vehicle exceed the preset angle thresholds, this indicates that the vehicle has exceeded the normal range of inclination, possibly because the vehicle has been out of balance, turned over or partially fallen into water. At this time, it is also determined that the vehicle falls into water, so as to trigger the related safety measures of the vehicle falling into water.
Further, in order to implement a quick and effective automatic rescue mode after determining that the vehicle falls into water, in this embodiment, the step S30 or the step S70 further includes:
step S80: outputting an emergency command for controlling the vehicle to open windows, sunroofs and tail gates and an emergency call request comprising: and uploading the vehicle position information and the attitude information to an accident emergency center through the communication domain controller.
It should be noted that the emergency command is mainly used to control some specific functions of the vehicle, such as opening windows, sunroofs and tail gates, to help passengers escape from the vehicle or to provide convenience in other emergency situations. These commands may be sent to the corresponding actuators via the body area controller to effect the corresponding actions, such as opening the window via the window motor controller, opening the sunroof via the sunroof motor controller, opening the tailgate power door lock via the tailgate door lock controller, and opening the tailgate via the tailgate auto-lift controller.
In addition, the emergency call request refers to uploading the position information and the posture information of the vehicle to an accident emergency center or a related rescue agency through the communication domain controller. Thus, emergency personnel can quickly obtain the current position and posture information of the vehicle and immediately take action.
In the second embodiment, by continuously acquiring the water pressure value detected by the pressure type water level gauge, and detecting the loop state of the conductive water level gauge again when the current water pressure value is lower than the second preset water pressure value within the preset time period, when the loop of the conductive water level gauge is disconnected, the vehicle is judged to leave the water area, so that misjudgment of vehicle falling water is avoided, and reliability of vehicle falling water sensing is improved. In addition, in this embodiment, when the current water pressure value is not greater than the first preset water pressure value and not less than the second preset water pressure value within a preset time period, values of a vehicle roll angle and a pitch angle are collected through an inertial navigation module, and when the values of the vehicle roll angle and the pitch angle both exceed a preset angle threshold value, the vehicle is determined to fall into water, so that relevant safety measures of the vehicle falling into water are triggered, and therefore safety when accidents such as vehicle side turning to a ditch are met is improved. Further, related safety measures include outputting an emergency command for controlling the vehicle to open windows, sunroofs, and tailgates to assist the occupant in escaping from the vehicle, and an emergency call request including: the vehicle position information and the gesture information are uploaded to an accident emergency center through the communication domain controller, so that emergency rescue workers can quickly obtain the current position and gesture information of the vehicle and immediately take action.
Referring to fig. 3, fig. 3 is a schematic flow chart of a third embodiment of the vehicle water-logging sensing method according to the present invention, and based on the second embodiment shown in fig. 2, a third embodiment of the vehicle water-logging sensing method according to the present invention is provided.
In a third embodiment, after the step S70, the method further includes:
step S90: and when the values of the roll angle and the pitch angle of the vehicle are both within a preset angle threshold value, determining that the vehicle wades.
It should be noted that, if the current water pressure value is not greater than the first preset water pressure value and not less than the second preset water pressure value within the preset time period, acquiring the values of the roll angle and the pitch angle of the vehicle by using an inertial navigation module; when the values of the roll angle and the pitch angle of the vehicle are both within the preset angle threshold, determining that the vehicle is waded, wherein the vehicle wading refers to the situation that a part of the vehicle enters water, and the roll angle and the pitch angle of the vehicle are within the preset angle threshold, which indicates that the posture of the vehicle is relatively stable and no obvious inclination or overturning is generated.
Further, in order to detect the wading depth of the vehicle and remind a driver of the wading condition of the vehicle, the vehicle water falling sensing system further comprises an ultrasonic sensor, wherein the ultrasonic sensor is arranged below the vehicle rearview mirror; the step S90 further includes:
step S100: and when the vehicle wades, detecting the current water level value by using the ultrasonic sensor.
Referring to fig. 4, the ultrasonic sensor may be mounted below two rear view mirrors of the vehicle, and sense the ultrasonic sensor downward to detect wading depths on both sides of the vehicle. The ultrasonic sensor may transmit an ultrasonic pulse and measure its echo, and the distance of the object from the sensor is determined by calculating the echo time. In the wading situation, the ultrasonic sensor may be used to measure the depth of the water surrounding the vehicle, i.e. the water level value.
Step S110: when the water level value is larger than a preset water level value, the current water level value of the vehicle is displayed through the vehicle entertainment host computer, and the vehicle entertainment host computer is controlled to give an alarm.
It should be noted that, the preset water level value refers to a preset critical value of water level alarm determination. The above-described vehicle entertainment host is a central control unit in the vehicle interior, and is generally equipped with functions such as a display screen and a sound. When the water level value is detected to exceed the preset water level value, the current water level value can be transmitted to the vehicle entertainment host for display. The vehicle entertainment host may have a specific interface for displaying the current water level value of the vehicle in an intuitive manner, such as a digital display or graphical interface. Meanwhile, the vehicle entertainment host can give an alarm, such as an audible alarm, a warning icon or text display, and the like, so as to remind a driver of the wading situation of the vehicle and take proper actions.
It should be understood that the detected water level value may be an average value of multiple detections, and by detecting the water level height multiple times and calculating the average value of the detection results, measurement deviation caused by external environment changes, sensor errors and other factors may be reduced, so as to improve accuracy and reliability of data.
Further, in order to help the driver to better understand the road condition in front when the vehicle is wading, the vehicle water falling sensing system further comprises an underwater sonar which is installed in front of the front wheels of the vehicle; the step S90 further includes:
step S120: and when the vehicle wades, monitoring the road environment ahead by using the underwater sonar.
It should be noted that, referring to fig. 4, the underwater sonar may be installed in front of two front wheels, and senses the ground that the wheels will drive through obliquely downwards, the underwater sonar may transmit acoustic signals and receive echoes, and by analyzing the time, intensity and characteristics of the echoes, the ground condition that the wheels will touch or pass through may be determined, for example, the height, texture, hardness, etc. of the ground may be detected.
Step S130: when the front road ground falling difference value is larger than the preset falling difference value, the front road ground falling difference value is displayed through the vehicle entertainment host computer, and the vehicle entertainment host computer is controlled to give an alarm.
It should be noted that, the preset drop value refers to a preset critical value of drop alarm determination. The vehicle entertainment host machine serves as a central control unit in the vehicle and has functions such as a display screen and a sound. In this case, when the vehicle detects that the front road surface has a drop greater than a preset drop, such as an obstacle or a pit, the drop value of the front road may be transmitted to the vehicle entertainment host for display. The vehicle entertainment host can have a specific interface to display the drop value of the road surface in front in an intuitive way, and can use digital display or graphical interface and other forms. Meanwhile, the vehicle entertainment host can give an alarm, such as an audible alarm, a warning icon or text display, and the like, so as to remind the driver of the ground condition of the road ahead.
In a third embodiment, the current water pressure value is not greater than the first preset water pressure value and not less than the second preset water pressure value within a preset time period, then the inertial navigation module is used for collecting the values of the vehicle roll angle and the pitch angle, when the values of the vehicle roll angle and the pitch angle are both within a preset angle threshold value, the vehicle wading is determined, in this case, the ultrasonic sensor is arranged below two rearview mirrors of the vehicle and senses towards the lower direction, the wading depths of two sides of the vehicle are respectively detected, and when the water level value is greater than the preset water level value, the current water level value of the vehicle is displayed through the vehicle entertainment host, and the vehicle entertainment host is controlled to give an alarm so as to remind a driver of paying attention to the wading condition of the vehicle and take proper actions. In addition, the vehicle entertainment host computer is also arranged in front of the two front wheels through underwater sonar, the ground which the wheels are about to drive through is perceived obliquely downwards, when the ground falling value of the front road is larger than the preset falling value, the ground falling value of the front road is displayed through the vehicle entertainment host computer, and the vehicle entertainment host computer is controlled to give an alarm so as to remind a driver of paying attention to the ground condition of the front road.
In addition, the embodiment of the invention also provides a vehicle water falling sensing system, which comprises: a car body domain controller, a conductive water level gauge and a pressure water level gauge;
the automobile body domain controller is connected with the conductive water level gauge and the pressure water level gauge respectively.
Further, the system further comprises: an ultrasonic sensor and underwater sonar;
the ultrasonic sensor and the underwater sonar are respectively connected with the vehicle body domain controller.
In addition, the embodiment of the invention also provides an automobile, which comprises the automobile water falling sensing system.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the terms first, second, third, etc. do not denote any order, but rather the terms first, second, third, etc. are used to interpret the terms as names.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. read only memory mirror (Read Only Memory image, ROM)/random access memory (Random Access Memory, RAM), magnetic disk, optical disk), comprising instructions for causing an end user device (which may be a mobile phone, a computer, a server, an air conditioner, or a network user device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. The vehicle water-falling sensing method is characterized by being applied to a vehicle water-falling sensing system, and comprises a conductive water level gauge and a pressure water level gauge, wherein the installation height of the conductive water level gauge is higher than the maximum wading depth of a vehicle, and the installation height of the pressure water level gauge is lower than the lowest point of an engine or an electric drive;
the vehicle water falling sensing method comprises the following steps:
detecting the loop state of the conductive water level gauge;
when the loop of the conductive water level gauge is conducted, detecting the current water pressure value by using the pressure water level gauge;
and when the current water pressure values are all larger than the first preset water pressure value within the preset time period, judging that the vehicle falls into water.
2. The vehicle water fall sensing method according to claim 1, wherein when the current water pressure values are all greater than the first preset water pressure value within the preset time period, the method further comprises, after confirming that the vehicle falls into water:
if the current water pressure values are lower than the second preset water pressure value within the preset time period, detecting the loop state of the conductive water level gauge again;
and if the loop of the conductive water level gauge is disconnected, judging that the vehicle leaves the water area.
3. The vehicle water fall sensing method according to claim 2, wherein if the circuit of the conductive water level gauge is disconnected, the method further comprises, after determining that the vehicle leaves the water area:
if the current water pressure value is not greater than the first preset water pressure value and not less than the second preset water pressure value within the preset time period, acquiring the values of the roll angle and the pitch angle of the vehicle by using an inertial navigation module;
and when the values of the roll angle and the pitch angle of the vehicle exceed the preset angle threshold value, judging that the vehicle falls into water.
4. The vehicle drowning perception method according to claim 1 or 3, characterized by further comprising, after the determination that the vehicle falls into the water:
outputting an emergency command for controlling the vehicle to open windows, sunroofs and tail gates and an emergency call request comprising: and uploading the vehicle position information and the attitude information to an accident emergency center through the communication domain controller.
5. The vehicle water fall sensing method according to claim 3, wherein after the inertial navigation module collects the values of the roll angle and the pitch angle of the vehicle, the method further comprises:
and when the values of the roll angle and the pitch angle of the vehicle are both within a preset angle threshold value, determining that the vehicle wades.
6. The vehicle drowning perception method according to claim 5, characterized in that the vehicle drowning perception system further comprises an ultrasonic sensor mounted under the vehicle rear view mirror;
when the values of the roll angle and the pitch angle of the vehicle are both within the preset angle threshold, the method further comprises the following steps of:
detecting a current water level value by using the ultrasonic sensor when the vehicle wades;
when the water level value is larger than a preset water level value, the current water level value of the vehicle is displayed through the vehicle entertainment host computer, and the vehicle entertainment host computer is controlled to give an alarm.
7. The vehicle drowning perception method according to claim 5, characterized in that the vehicle drowning perception system further comprises an underwater sonar installed in front of the front wheel of the vehicle;
when the values of the roll angle and the pitch angle of the vehicle are within the preset angle threshold, the method further comprises the following steps of:
when the vehicle wades, monitoring the road environment ahead by using the underwater sonar;
when the front road ground falling difference value is larger than the preset falling difference value, the front road ground falling difference value is displayed through the vehicle entertainment host computer, and the vehicle entertainment host computer is controlled to give an alarm.
8. A vehicle water fall perception system, the system comprising: a car body domain controller, a conductive water level gauge and a pressure water level gauge;
the automobile body domain controller is connected with the conductive water level gauge and the pressure water level gauge respectively.
9. A vehicle water fall perception system, the system further comprising: an ultrasonic sensor and underwater sonar;
the ultrasonic sensor and the underwater sonar are respectively connected with the vehicle body domain controller.
10. An automobile comprising the vehicle over-water perception system of claim 9.
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| CN118274823A (en) * | 2024-02-29 | 2024-07-02 | 北京机电工程研究所 | Aircraft water contact judging method based on angular velocity information |
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