CN114999084A - Electric shock prevention reminding system and method - Google Patents
Electric shock prevention reminding system and method Download PDFInfo
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- CN114999084A CN114999084A CN202210611488.6A CN202210611488A CN114999084A CN 114999084 A CN114999084 A CN 114999084A CN 202210611488 A CN202210611488 A CN 202210611488A CN 114999084 A CN114999084 A CN 114999084A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/22—Status alarms responsive to presence or absence of persons
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Abstract
The invention discloses an electric shock prevention reminding system and method, which comprise an alarm module, a control unit and an energy supply unit, wherein the alarm module is used for giving an alarm; the control unit comprises an acquisition module and a control module, wherein the acquisition module is used for acquiring scene information in a monitoring area and a forbidden area, the control module is used for identifying and tracking a moving target in the scene information, the control unit is used for sending an alarm instruction to the alarm module, and the alarm module receives the alarm instruction and sends an alarm; the energy supply unit comprises a power generation module and a rechargeable battery, wherein the power generation module is electrically connected with the rechargeable battery, and the rechargeable battery is electrically connected with the alarm module, the acquisition module and the control module. After the voice alarm module receives an alarm instruction, the recorded voice is played and amplified through the loudspeaker, so that a child who enters by mistake and a person with weak safety consciousness can be reminded of timely leaving.
Description
Technical Field
The invention relates to the technical field of electric shock prevention systems, in particular to an electric shock prevention reminding system and method.
Background
The power transmission and distribution line is a carrier for electric energy transmission and supply, and is an important social public utility. The safety protection of the power line is the basic work for ensuring the safety of power supply and utilization and maintaining the public safety of the society. With the development of social economy, the demand of the whole society for electric energy is continuously expanded, the construction of electric power facilities is accelerated, but limited by landforms and electric power channels, electric power lines in some remote, remote and rural areas are built in open fields, rivers and ponds, and due to the lack of common knowledge of some fishermen on the electric power facilities, the behaviors made by the fishermen cause great potential safety hazards to the electric power lines, and the operation safety of a power grid is seriously influenced.
The existing safety precaution technology is to prevent the danger of the electric power line facility through the warning sign and the warning board, but when children, people with low safety consciousness, animals and the like approach to, climb the electric power facility and do critical electric power line facility behaviors, the safety warning device which only depends on the sign to play a warning role can not play a due role, and the warning board is easy to lose over the long day and difficult to be found at night, so that the safety warning device can not play a good warning role.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: an electric shock prevention reminding system and method are provided to solve the technical problems in the prior art.
The technical scheme adopted by the invention is as follows: an electric shock prevention reminding system comprises an alarm module, a control unit and an energy supply unit, wherein the alarm module is used for giving an alarm; the control unit comprises an acquisition module and a control module, wherein the acquisition module is used for acquiring scene information in a monitoring area and a forbidden area, the control module is used for identifying and tracking a moving target in the scene information, the control unit is used for sending an alarm instruction to the alarm module, and the alarm module receives the alarm instruction and sends an alarm; the energy supply unit comprises a power generation module and a rechargeable battery, wherein the power generation module is electrically connected with the rechargeable battery, and the rechargeable battery is electrically connected with the alarm module, the acquisition module and the control module.
As a preferable scheme of the electric shock prevention reminding system, the electric shock prevention reminding system comprises: the alarm module comprises an audible and visual alarm and a voice alarm module, the audible and visual alarm and the voice alarm module are controlled by the control module, danger prompting voice is preset in the voice alarm module, and the voice alarm module is electrically connected with the loudspeaker.
As a preferable scheme of the electric shock prevention reminding system, the electric shock prevention reminding system comprises: the acquisition module comprises a radar detector, the radar detector scans and detects scene information in a monitoring area by transmitting and receiving radar wave reflection signals to obtain a first signal, and the middle part of the monitoring area is defined as a forbidden area; when the moving target enters a monitoring area, the radar detector receives radar wave reflection signals to obtain second signals, the second signals are input into the control module, the moving target enters a forbidden area, and the control module sends out alarm signals to the audible and visual alarm and the voice alarm module.
As a preferable scheme of the electric shock prevention reminding system, the electric shock prevention reminding system comprises: the rechargeable battery is electrically connected with the audible and visual alarm, the voice alarm module, the loudspeaker radar detector and the control module.
As a preferred scheme of the electric shock prevention reminding system, the electric shock prevention reminding system comprises: the power generation module comprises a wind driven generator and a solar power generation panel which are respectively and electrically connected with the rechargeable battery.
An electric shock prevention reminding method comprises the following steps: defining a monitoring area, wherein the middle part of the monitoring area is defined as a forbidden area; the monitoring area is scanned through the acquisition module to acquire scene information, and the control module is used for identifying and tracking a moving target in the scene information; when the moving target enters the forbidden area, the control unit sends an alarm instruction to the alarm module; the alarm module receives the alarm command and gives an alarm.
As a preferable scheme of the electric shock prevention reminding method, the electric shock prevention reminding method comprises the following steps: the acquisition module comprises a radar detector; when no moving target exists: the radar detector scans and detects scene information in a monitoring area by transmitting and receiving radar wave reflection signals to obtain a first signal; inputting a first signal into a control module, and recording the first signal as a background signal by the control module; when a moving target appears: the radar detector carries out continuous tracking detection on a moving target in scene information in the monitored area to obtain a second signal; when the moving target enters a forbidden area, the radar detector inputs a second signal to the control module; the control module receives the second signal and sends out an alarm signal to the audible and visual alarm and the voice alarm module; and the sound-light alarm receives the alarm signal and sends out sound-light alarm, and the voice alarm module sends out danger prompting voice and amplifies the danger prompting voice through a loudspeaker.
As a preferable scheme of the electric shock prevention reminding method, the electric shock prevention reminding method comprises the following steps: establishing a plane coordinate system based on the center of the forbidden area as a central point, calibrating the coordinate of the forbidden area as a first coordinate set, and calibrating the coordinate of the monitoring area as a second coordinate set, wherein the second coordinate set comprises the first coordinate set;
when the moving target enters the forbidden area, the radar detector transmits radar waves to the moving target, determines the position of the moving target according to the received and reflected radar waves, and establishes a third coordinate based on a plane coordinate system;
the control module compares the third coordinate with the second coordinate set and the third coordinate set; when the third coordinate is overlapped with the second coordinate set and the third coordinate is not overlapped with the third coordinate set, the moving target is positioned in the monitoring area; the control module compares the third coordinate with the second coordinate set and the third coordinate set; when the third coordinate coincides with the second coordinate set and the third coordinate coincides with the third coordinate set, the moving object is located in the forbidden area.
The invention has the beneficial effects that: compared with the prior art, the method judges the threshold value point by point through signals, determines the positions of the first two sampling points corresponding to the threshold value, predicts the position of the sampling point corresponding to the next threshold value by utilizing the positions of the two sampling points, sets a confidence interval at the predicted sampling point, judges the threshold value in the interval, finds the position of the sampling point corresponding to the actual threshold value in the interval, and repeats the previous process until all processing of the read-in data is completed. And after all sampling point positions corresponding to the threshold are obtained, calculating the frequency or the rotating speed. The calculation method greatly reduces the calculation amount under the condition of not changing the frequency or rotating speed calculation precision, saves the calculation time and ensures the accuracy and the real-time performance of the frequency or rotating speed calculation. Meanwhile, the disturbance prevention coefficient introduced by the method eliminates the influence of interference signals, and avoids calculation errors caused by the influence.
Drawings
FIG. 1 is a schematic view of a basic principle connection structure of an electric shock prevention reminding system;
fig. 2 is a schematic view of a basic flow of an electric shock prevention reminding method.
Detailed Description
The invention is further described below with reference to specific examples.
Example 1: referring to fig. 1, an electric shock prevention reminding system includes:
the alarm module 100, the alarm module 100 is used for sending out an alarm; the alarm module 100 can warn people or animals who mistakenly enter a dangerous area where the distribution line is located to timely leave;
the control unit 200, the control unit 200 includes an acquisition module 201 and a control module 200, the acquisition module 201 is used for acquiring scene information in a monitoring area and a forbidden area, the control module 202 is used for identifying and tracking a moving target in the scene information, the control unit 200 is used for sending an alarm instruction to the alarm module 100, and the alarm module 100 receives the alarm instruction and sends an alarm; the area where the distribution line is located can be defined as a monitoring area, an area in the middle of the monitoring area, which is close to the distribution line and has danger, is defined as a forbidden area, the acquisition module 201 is used for acquiring scene information in the monitoring area and the forbidden area, when a moving target appears in the scene information of the monitoring area and the forbidden area, children and people with low safety consciousness who enter the monitoring area by mistake are usually moved, the control unit 200 is used for sending an alarm instruction to the alarm module 100, and the alarm module 100 receives the alarm instruction to send an alarm to remind the people to leave in time;
the energy supply unit 300, the energy supply unit 300 includes a power generation module 301 and a rechargeable battery 302, the power generation module 301 is electrically connected to the rechargeable battery 302, and the rechargeable battery 302 is electrically connected to the alarm module 100, the acquisition module 201 and the control module 202. Can generate electricity in the open air through power generation module 301, flexibility when reinforcing the use need not to draw an electric wire in addition, or regularly change the battery, and it is more convenient to use, can save the electric energy through rechargeable battery 302 to provide the electric energy for alarm module 100, collection module 201 and control module 202.
The alarm module 100 comprises an audible and visual alarm 101 and a voice alarm module 102, the audible and visual alarm 101 and the voice alarm module 102 are controlled by a control module 202, a danger prompting voice is preset in the voice alarm module 102, and the voice alarm module 102 is electrically connected with a loudspeaker 102 a. The recording may be performed on the voice alarm module 102 in advance: such as: when the voice alarm module 102 receives an alarm instruction, the recorded voice is played and amplified through the loudspeaker 102a, so that a child who enters by mistake and a person with low safety consciousness can be reminded to leave in time. Audible and visual alarm 101 can adopt current audible and visual alarm, after audible and visual alarm 101 received alarm instruction, send sound alarm and scare away the animal of mistake income, the dazzling light that audible and visual alarm produced also can in time scare away the animal and remind the people of mistake income to leave evening, avoid child, the light people of safety consciousness, animal etc. be close to, scramble electric power facility, cause very big potential safety hazard to power line, seriously influenced electric wire netting operation safety, guarantee its effect of performance warning.
The acquisition module 201 comprises a radar detector 201a, the radar detector 201a scans and detects scene information in a monitored area by transmitting and receiving radar wave reflection signals to obtain a first signal, and the middle part of the monitored area is defined as a forbidden area; and taking the radar wave reflection signal of the scene information in the monitoring area in the unmanned state as a first signal, and defining the radar wave as the first signal according to the background situation of the scene in the monitoring area in the unmanned state reflected by the received radar wave reflection signal.
When a moving target enters a monitoring area, the radar detector 201a receives a radar wave reflection signal to obtain a second signal, the second signal is input into the control module 202, and when the moving target enters a forbidden area, the control module 202 sends out an alarm signal to the audible and visual alarm 101 and the voice alarm module 102. The control module 202 receives the first signal and does not send out an alarm signal to the audible and visual alarm 101 and the voice alarm module 102. When a moving object enters a scene in a monitoring area, the moving object reflects radar waves, so that the radar waves are different from the radar waves in an unmanned state, the radar waves different from background radar waves are used as second signals, the second signals are input into the control module 202, and the moving object enters a detection area or a forbidden area, and when the moving object enters the forbidden area, the control module 202 sends out alarm signals to the audible and visual alarm 101 and the voice alarm module 102. The control module 201 in the present invention is a single chip microcomputer for receiving the first signal and the second signal and sending an alarm instruction, and preferably adopts, for example, STM32F030F4P6, and a program is set in the single chip microcomputer.
The rechargeable battery 302 is electrically connected with the audible and visual alarm 101, the voice alarm module 102, the speaker 102a, the radar detector 201a and the control module 202. The rechargeable battery 302 can provide the electric energy required by the operation of the audible and visual alarm 101, the voice alarm module 102, the speaker 102a, the radar detector 201a and the control module 202.
The power generation module 301 includes a wind power generator 301a and a solar power generation panel 301b, and the wind power generator 301a and the solar power generation panel 301b are electrically connected to the rechargeable battery 302, respectively. The wind power generator 301a and the solar power generation panel 301b can provide electric energy for the rechargeable battery 302, the rechargeable battery 302 can store the electric energy, and the rechargeable battery 302 provides electric energy required by the operation of the audible and visual alarm 101, the voice alarm module 102, the speaker 102a, the radar detector 201a and the control module 202. The rechargeable battery 302 is preferably charged by wind-solar power supply.
The wind power generator 301a can start to rotate at a wind speed of 2.0 m/s and start to charge at a wind speed of 2.5 m/s. In addition, when the wind energy resistant brake is applied to areas with strong wind energy, the maximum 14-level strong typhoon resistance is required, and a double-insurance brake system of mechanical brake and electromagnetic brake is required to prevent the fan blades from rotating too fast to cause damage.
Solar panel 301b, need be towards south fixed mounting, in order to improve photoelectric rotation efficiency, effectively utilize solar energy, solar panel plane and horizontal plane angle subregion are different.
Table 1: solar panel plane and horizontal plane angle area distribution table.
| Region of origin | Reference value of angle |
| North China | 40° |
| Middle part | 30° |
| South | 20° |
In embodiment 2, referring to fig. 2, an electric shock prevention reminding method is provided, in order to verify and explain technical effects adopted in the method, the embodiment adopts a conventional technical scheme and the method of the present invention to perform a comparison test, and compares test results by means of scientific demonstration to verify the real effect of the method. The electric shock prevention reminding method comprises the following steps:
s1: defining a monitoring area, wherein the middle part of the monitoring area is defined as a forbidden area;
the area where the distribution line is located can be defined as a monitoring area, and the area in the middle of the monitoring area, which is close to the distribution line and has danger, is defined as a forbidden area;
s2: the acquisition module 201 scans the monitored area to acquire scene information, and the control module 202 is used for identifying and tracking a moving target in the scene information;
the acquisition module 201 includes a radar detector 201 a;
when no moving target exists:
the radar detector 201a scans and detects scene information in a monitoring area by transmitting and receiving radar wave reflection signals to obtain a first signal;
inputting the first signal to the control module 202, and recording the first signal as a background signal by the control module 202; taking a scene information radar wave reflection signal in the monitoring area in an unmanned state as a first signal, and defining the radar wave as the first signal according to the background situation of the scene in the monitoring area in the unmanned state reflected by the received radar wave reflection signal;
when a moving target appears:
the radar detector 201a continuously tracks and detects a moving target in scene information in a monitored area to obtain a second signal;
when the moving target enters the forbidden area, the radar detector 201a inputs a second signal to the control module 202;
the control module 202 receives the second signal and sends out an alarm signal to the audible and visual alarm 101 and the voice alarm module 102;
the audible and visual alarm 101 receives the alarm signal and gives out audible and visual alarm, and the voice alarm module 102 gives out danger prompting voice and amplifies the danger prompting voice through a loudspeaker. Because the mobile object can reflect radar waves, the radar waves are different from the radar waves in an unmanned state, the radar waves different from background radar waves are used as second signals, the second signals are input into the control module 202 to indicate that the mobile object enters a detection area or a forbidden area, when the mobile object enters the forbidden area, the control module 202 sends alarm signals to the audible and visual alarm 101 and the voice alarm module 102, and after the voice alarm module 102 receives an alarm instruction, recorded voice is played and amplified through the loudspeaker 102a, so that the mobile object can remind mistakenly-entering children and people with low safety consciousness to leave in time. Audible and visual alarm 101 can adopt current audible and visual alarm, after audible and visual alarm 101 received alarm instruction, send sound alarm and scare away the animal of mistake income, the dazzling light that audible and visual alarm produced also can in time scare away the animal and remind the people of mistake income to leave evening, avoid child, the light people of safety consciousness, animal etc. be close to, scramble electric power facility, cause very big potential safety hazard to power line, seriously influenced electric wire netting operation safety, guarantee its effect of performance warning.
The radar detector 201a is used for scanning and detecting scene information in the monitored area and the forbidden area by transmitting and receiving radar wave reflection signals, so that the monitored area and the forbidden area can be detected both in the day and at night, and people or animals intruding into the monitored area and the forbidden area are prevented from being difficult to detect in time due to insufficient light at night, so that the monitoring of 24 hours for the intruding into the monitored area and the forbidden area is ensured, and the due effect of the monitoring is ensured;
establishing a plane coordinate system based on the center of the forbidden area as a central point, calibrating the coordinates of the forbidden area into a first coordinate set, and calibrating the coordinates of the monitoring area into a second coordinate set, wherein the second coordinate set comprises the first coordinate set. The forbidden area can be divided into rectangles or circles according to the conditions of distribution lines or distribution equipment, if the forbidden area is a rectangle, coordinate values of four vertexes of the forbidden area are used as the maximum value of coordinates, all coordinates contained in the maximum value of coordinates are a first coordinate set, if the forbidden area is a circle, the center of the forbidden area is used as a coordinate of a central point (0.0), the radius is measured in advance, and a second coordinate set is generated according to a circular coordinate formula;
when the moving target enters the forbidden area, the radar detector 201a determines the position of the moving target by transmitting radar waves to the moving target, receiving the reflected radar waves, and establishing a third coordinate based on the planar coordinate system. Deleting the position coordinate of the moving target to form a third coordinate after the z-axis coordinate is deleted, wherein the third coordinate is a plane coordinate;
the control module 202 compares the third coordinate with the second coordinate set and the third coordinate set;
when the third coordinate is overlapped with the second coordinate set and the third coordinate is not overlapped with the third coordinate set, the moving target is positioned in the monitoring area;
the control module 202 compares the third coordinate with the second coordinate set and the third coordinate set;
when the third coordinate is overlapped with the second coordinate set and the third coordinate is overlapped with the third coordinate set, the moving target is positioned in the forbidden area;
s3: when the moving object enters the forbidden area, the control unit 200 sends an alarm instruction to the alarm module 100; when the third coordinate is overlapped with the second coordinate set and the third coordinate is overlapped with the third coordinate set, the moving target is located in a forbidden area, and the control module 202 sends out alarm signals to the audible and visual alarm 101 and the voice alarm module 102;
s4: the alarm module 100 receives the alarm command and issues an alarm.
After the voice alarm module 102 receives the alarm instruction, the recorded voice is played and amplified through the loudspeaker 102a, so that children who enter by mistake and people with weak safety consciousness can be reminded of leaving in time. Audible and visual alarm 101 can adopt current audible and visual alarm, after audible and visual alarm 101 received alarm instruction, send sound alarm and scare away the animal of mistake income, the dazzling light that audible and visual alarm produced also can in time scare away the animal and remind the people of mistake income to leave evening, avoid child, the light people of safety consciousness, animal etc. be close to, scramble electric power facility, cause very big potential safety hazard to power line, seriously influenced electric wire netting operation safety, guarantee its effect of performance warning.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.
Claims (8)
1. The utility model provides an electric shock prevention warning system which characterized in that: the method comprises the following steps:
an alarm module (100), the alarm module (100) being configured to issue an alarm;
the control unit (200) comprises an acquisition module (201) and a control module (200) which are electrically connected with each other, wherein the acquisition module (201) is used for acquiring scene information in a monitoring area and a forbidden area, the control module (202) is used for identifying and tracking a moving target in the scene information, the control unit (200) is used for sending an alarm instruction to the alarm module (100), and the alarm module (100) receives the alarm instruction and sends an alarm;
energy supply unit (300), energy supply unit (300) includes power module (301) and rechargeable battery (302), power module (301) electric connection rechargeable battery (302), rechargeable battery (302) electric connection alarm module (100), collection module (201) and control module (202).
2. The electric shock prevention reminding system as claimed in claim 1, wherein: alarm module (100) include audible-visual annunciator (101) and audio alert module (102), audible-visual annunciator (101) and audio alert module (102) are connected to control module (202), audio alert module (102) preset has dangerous suggestion pronunciation to audio alert module (102) electric connection has speaker (102 a).
3. The electric shock prevention reminding system as claimed in claim 2, wherein: the acquisition module (201) comprises a radar detector (201 a), the radar detector (201 a) scans and detects scene information in a monitored area by transmitting and receiving radar wave reflection signals to obtain a first signal, and the middle part of the monitored area is defined as a forbidden area;
when a moving target enters a monitoring area, a radar detector (201 a) receives a radar wave reflection signal to obtain a second signal, the second signal is input into a control module (202), the moving target enters a forbidden area, and the control module (202) sends out alarm signals to an audible and visual alarm (101) and a voice alarm module (102).
4. The electric shock protection reminding system of claim 3, wherein: the rechargeable battery (302) is electrically connected with the audible and visual alarm (101), the voice alarm module (102), the loudspeaker (102 a), the radar detector (201 a) and the control module (202).
5. The electric shock prevention reminding system as claimed in claim 4, wherein: the power generation module (301) comprises a wind driven generator (301 a) and a solar power generation panel (301 b), and the wind driven generator (301 a) and the solar power generation panel (301 b) are respectively and electrically connected with the rechargeable battery (302).
6. An electric shock prevention reminding method is characterized in that: the method comprises the following steps:
defining a monitoring area, wherein the middle part of the monitoring area is defined as a forbidden area;
the method comprises the steps that a collection module (201) is used for scanning a monitored area to collect scene information, and a control module (202) is used for identifying and tracking a moving target in the scene information;
when the moving target enters the forbidden area, the control unit (200) sends an alarm instruction to the alarm module (100);
the alarm module (100) receives the alarm command and gives an alarm.
7. The electric shock prevention reminding method as claimed in claim 6, characterized in that: the acquisition module (201) comprises a radar detector (201 a);
when no moving target exists:
the radar detector (201 a) scans and detects scene information in a monitored area by transmitting and receiving radar wave reflection signals to obtain a first signal;
inputting a first signal into a control module (202), wherein the control module (202) records the first signal as a background signal;
when a moving target appears:
the radar detector (201 a) continuously tracks and detects a moving target in scene information in a monitored area to obtain a second signal;
when the moving target enters a forbidden area, the radar detector (201 a) inputs a second signal to the control module (202);
the control module (202) receives the second signal and sends out an alarm signal to the audible and visual alarm (101) and the voice alarm module (102);
the audible and visual alarm (101) receives the alarm signal and gives out audible and visual alarm, and the voice alarm module (102) gives out danger prompting voice and amplifies the danger prompting voice through a loudspeaker.
8. The method for reminding of electric shock protection as claimed in claim 6, wherein: establishing a plane coordinate system based on the center of the forbidden area as a central point, calibrating the coordinate of the forbidden area as a first coordinate set, and calibrating the coordinate of the monitoring area as a second coordinate set, wherein the second coordinate set comprises the first coordinate set;
when the moving target enters the forbidden area, the radar detector (201 a) transmits radar waves to the moving target, determines the position of the moving target according to the received reflected radar waves, and establishes a third coordinate based on the plane coordinate system;
the control module (202) compares the third coordinate with the second set of coordinates and the third set of coordinates;
when the third coordinate is overlapped with the second coordinate set and the third coordinate is not overlapped with the third coordinate set, the moving target is positioned in the monitoring area;
the control module (202) comparing the third coordinate to the second set of coordinates and the third set of coordinates;
when the third coordinate coincides with the second coordinate set and the third coordinate coincides with the third coordinate set, the moving object is located in the forbidden area.
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| US20200166611A1 (en) * | 2018-11-22 | 2020-05-28 | Jomoo Kitchen & Bath Co., Ltd | Detection method, detection device, terminal and detection system |
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2022
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| CN203260152U (en) * | 2013-05-22 | 2013-10-30 | 边辉 | Safety voice warning device for electric power facilities |
| CN103489290A (en) * | 2013-10-17 | 2014-01-01 | 江兴明 | Method for monitoring children entering specific area by using IoT (Internet of Things) |
| CN206282413U (en) * | 2016-08-02 | 2017-06-27 | 贵阳锐泰电力科技有限公司 | Electric power facility safety alarm device |
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