CN114715070A - Method and device for monitoring people staying in vehicle - Google Patents

Abstract

The invention discloses a method for monitoring stranded persons in a vehicle. The method is implemented based on a monitoring system, wherein the monitoring system includes a detection terminal and an alarm terminal, the detection terminal and the alarm terminal are communicatively connected, and the method includes : When the vehicle flameout signal is received, the detection terminal scans the interior of the vehicle to obtain scan data; the detection terminal analyzes and processes the scan data to confirm whether there is a living object in the vehicle; if so, obtain the The distance between the terminal and the alarm terminal is detected, and it is judged whether the distance is greater than a preset distance, and if so, the alarm terminal is triggered to issue an alarm. It can accurately know the situation of living objects left in the car at the first time, and remind in time to avoid the occurrence of life accidents caused by forgetting for too long.

Description

A method and device for monitoring stranded persons in a vehicle

technical field

The invention relates to the technical field of automobile safety detection, in particular to a method and device for monitoring stranded persons in a vehicle.

Background technique

With social and economic development, scientific and technological progress, and the rapid development of various transportation vehicles, people travel more and more conveniently. The news that children or pets are left in the car may seriously cause heat stroke or suffocation in children. The most severe heat stroke may even develop heat stroke, and the fatality rate of severe heat stroke is about 80%. In summer, when the temperature is high, there is a large oven in the car under the sun. When the temperature is about 35 degrees, if the vehicle is exposed to the sun for 15 minutes, the temperature in the cockpit can reach 65 degrees. In such an environment, adults will be fatal if they stay for half an hour. , and children whose respiratory systems and heat tolerance are far less capable than adults are more likely to die from heat stroke. If the car is parked in a relatively confined space, the space inside the car is small, the doors and windows are well sealed, and the air circulation is not smooth. Staying in the car for a long time may lead to hypoxia, and the child locked in the car may cry because of anxiety. Further Exacerbating the lack of oxygen, coma and even death by suffocation may occur in severe cases. Although there are existing methods for detecting stranded children using ToF sensors, they have large limitations, high false alarm rates, and poor reliability in external environments such as high-intensity light, which cannot accurately reflect the situation of the occupants in the car and remind them in time.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a method and device for monitoring resident occupants in a vehicle, which can effectively solve the above problems.

In order to achieve the above purpose, the present invention provides a method for monitoring stranded persons in a vehicle, the method is implemented based on a monitoring system, wherein the monitoring system includes a detection terminal and an alarm terminal, and the detection terminal and the alarm terminal are connected in communication, The method includes:

When receiving the vehicle flameout signal, scan the interior of the vehicle through the detection terminal to obtain scan data;

The scanning data is analyzed and processed by the detection terminal to confirm whether there is a living object in the vehicle;

If so, obtain the distance between the detection terminal and the alarm terminal, and determine whether the distance is greater than a preset distance, and if so, trigger the alarm terminal to issue an alarm.

Preferably, after the triggering of the alarm terminal to issue an alarm, the method further includes:

When it is confirmed that the alarm terminal does not respond within a preset time, the detection terminal is used to trigger the lights and/or the horn in the vehicle to issue an alarm.

Preferably, the detection terminal includes a millimeter-wave radar sensor; the step of scanning the interior of the vehicle through the detection terminal to obtain the scan data includes: scanning the interior of the vehicle through the millimeter-wave radar sensor to obtain a reflected signal Scan data.

Preferably, the step of analyzing and processing the scan data to confirm whether there is a living object in the vehicle includes:

By analyzing and processing the reflected signal in the scan data, the distance, speed and direction of the reflected object are confirmed to determine whether there is a living object in the vehicle.

Preferably, the detection terminal is connected to a power source through a cigarette lighter interface, and the detection terminal includes a backup battery; when the vehicle flameout signal is received, the step of scanning the interior of the vehicle through the detection terminal includes:

When it is received that the voltage level of the cigarette lighter interface is set to be low, it is determined that the vehicle is in a flameout state, and the power supply of the detection terminal is switched to the backup battery, so that the detection terminal is connected to the vehicle. Scan inside.

Preferably, when the vehicle flameout signal is received, the vehicle interior is scanned by the detection terminal, and before the scanning data is obtained, the method further includes:

In response to the vehicle starting operation, the monitoring system is initialized, and the detection terminal and the alarm terminal are checked and paired to establish a communication connection between the detection terminal and the alarm terminal.

In order to achieve the above purpose, the present invention also provides a monitoring device for persons stranded in a vehicle, which is implemented based on a monitoring system, wherein the monitoring system includes a detection terminal and an alarm terminal, and the detection terminal and the alarm terminal are connected in communication , the device includes:

a scanning unit, configured to scan the interior of the vehicle through the detection terminal to obtain scan data when receiving the vehicle flameout signal;

a processing unit, configured to analyze and process the scan data by the detection terminal to confirm whether there is a living object in the vehicle;

The first alarm unit is configured to obtain the distance between the detection terminal and the alarm terminal if so, and determine whether the distance is greater than a preset distance, and if so, trigger the alarm terminal to issue an alarm.

Preferably, the device further includes:

The second alarm unit is configured to trigger the lamp and/or the horn in the vehicle to issue an alarm through the detection terminal when it is confirmed that the alarm terminal does not respond within a preset time.

Preferably, the device further includes:

The pairing unit is used to initialize the monitoring system in response to the start-up operation of the vehicle, and verify and pair the detection terminal and the alarm terminal to establish a relationship between the detection terminal and the alarm terminal. communication connection between.

Preferably, the detection terminal is connected to a power supply through a cigarette lighter interface, and the detection terminal includes a backup battery; the scanning unit is further used for:

When it is received that the voltage level of the cigarette lighter interface is set to be low, it is determined that the vehicle is in a flameout state, and the power supply of the detection terminal is switched to the backup battery, so that the detection terminal is connected to the vehicle. Scan inside.

Beneficial effects:

In the above scheme, after the vehicle is turned off and parked, the detection terminal scans and analyzes the inside of the vehicle, and when it is confirmed that there is a living object in the vehicle, the distance between the detection terminal and the alarm terminal is obtained and judged whether it is greater than the preset distance. Trigger the alarm terminal to issue an alarm to inform the driver that there are people left in the car, so as to accurately know the situation of the left living object in the car at the first time, and timely remind and avoid the occurrence of life accidents caused by forgetting for too long.

In the above scheme, after triggering the alarm terminal to issue an alarm, when the alarm terminal is confirmed to have not responded within a preset preset time, the detection terminal is further used to trigger the lights and/or horns in the vehicle to issue an alarm, so as to provide The living objects that are left in the car and cannot be processed by themselves provide a more reliable safety guarantee processing strategy, which greatly improves the safety and intelligence of vehicle use.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic flowchart of a method for monitoring stranded persons in a vehicle according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a monitoring system provided by an embodiment of the present invention.

FIG. 3 is a schematic diagram of an installation position of a millimeter-wave radar sensor in a vehicle according to an embodiment of the present invention.

FIG. 4 is a schematic flowchart of a monitoring method provided by an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a device for monitoring stranded persons in a vehicle according to an embodiment of the present invention.

The realization, functional characteristics and advantages of the object of the invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

The content of the present invention will be described in detail below with reference to the embodiments.

Referring to FIG. 1 , a schematic flowchart of a method for monitoring stranded persons in a vehicle according to an embodiment of the present invention is shown.

In this embodiment, the method is implemented based on a monitoring system. Further, as shown in FIG. 2 , the monitoring system includes a detection terminal and an alarm terminal, and the detection terminal and the alarm terminal are connected in communication. Among them, the detection terminal includes a power supply module, a radar sensor module, a timer, a processor, a sound and light alarm module, and a wireless communication main module, and the power supply module, the radar sensor module, the timer, the sound and light alarm module, and the wireless communication main module are all It is connected with the processor; the alarm terminal includes a battery module, a wireless communication slave module, a buzzer and a slave processor, and the battery module, the wireless communication slave module and the buzzer are all connected with the slave processor. The detection terminal and the alarm terminal are connected by a wireless communication master module and a wireless communication slave module after pairing; further, the wireless communication master module and the wireless communication slave module can be a Bluetooth module or a WiFi module (including 2G, 3G, 4G, 5G) . When judging that the corresponding conditions are met, the slave processor sends a signal to make the buzzer emit an alarm sound, and the battery module has the characteristic of being rechargeable, which is used to supply power to the alarm terminal.

Further, the detection terminal is installed in the car for detecting and corresponding processing in the car after the vehicle is turned off; and the alarm terminal can be carried around, and can also be designed to be carried according to the user's usage habits. The terminal is designed in the form of a fastener, so that it can be linked with the car key. When the driver turns off the engine and pulls out the key, the alarm terminal is carried along with it, so as to avoid being left in the car, so that it is impossible to know the situation of the occupants left in the car in time.

In another embodiment, the alarm in the alarm terminal is provided with a human body sensing device to detect whether the alarm terminal is worn. For example, a capacitive human body sensing device, when the human body sensing device detects that the alarm terminal leaves the human body, trigger The alarm device sends out an alarm to remind the driver to carry the alarm terminal in time, so as to avoid the situation that the alarm terminal is lost or lost.

Specifically, the power supply module includes a cigarette lighter interface and a backup battery, and the detection terminal is connected to a power source through the cigarette lighter interface, and then the backup battery can be charged through the power source connected to the cigarette lighter interface when the vehicle is started. When the vehicle is turned off and the cigarette lighter interface is closed, the power supply of the detection terminal is switched to the backup battery to supply power to other modules of the detection terminal to ensure that the detection terminal continues to work. At the same time, the power supply module is connected between the cigarette lighter interface and the backup battery. The switch between them can be further used to judge whether the vehicle is turned off. The timer is used to provide the timing clock signal to the processor. The processor is configured to analyze and process the reflected signal obtained by scanning the interior of the vehicle based on the radar sensor module, so as to judge whether there is a stranded living target in the vehicle based on the output distance, speed and angle signals.

The radar sensor module is a millimeter-wave radar sensor. By installing a millimeter-wave radar sensor in the vehicle, it continuously sends millimeter-wave radar signals and receives echo signals reflected in a predetermined area in the vehicle. Specifically, the principle of the millimeter wave radar sensor is to use the electromagnetic energy pulse (in the wireless wave spectrum) to transmit the radio wave from the source. After the radio wave is reflected by the surface, it will be received and processed by the receiver in it. In the processing, the position data of the target is measured according to the time difference between sending and receiving, and then the distance, speed and direction of the target object are determined. Due to the high frequency band and short wavelength of the millimeter-wave radar, it can detect weak movements and even the heart rate of breathing (since the breathing of the human body will cause the micro-movement of the chest and abdominal cavity, the radar detects the frequency of breathing by sensing the micro-movement), so it can be accurately Sensing the presence or absence of living targets in the back row. The application scenarios of this embodiment may include various vehicle models, such as cars (five-seat, seven-seat, etc.), passenger cars, etc., which are not limited here. In addition, the installation position of the millimeter-wave radar sensor in the vehicle can be specifically installed as required The settings, for example, can be installed on various positions such as the roof cover of the car, the central control of the car, the headrest of the car, etc., which are not specifically limited here. In this embodiment, it is preferable that the model of the vehicle is a sedan, and the millimeter-wave radar sensor is correspondingly installed on the first-row headrest or the second-row headrest according to the installation direction (including forward installation and reverse installation) of the child seat in the rear row. Row of headrests, as shown in Figure 3. Due to the high accuracy, strong anti-interference ability, long detection distance, small influence of environmental factors, and all-weather working characteristics of millimeter-wave radar, the millimeter-wave radar sensor is selected here.

In this embodiment, the method includes:

S11, when a vehicle flameout signal is received, scan the interior of the vehicle through the detection terminal to obtain scan data.

Wherein, when the vehicle flameout signal is received, the step of scanning the interior of the vehicle through the detection terminal includes:

When it is received that the voltage level of the cigarette lighter interface is set to be low, it is determined that the vehicle is in a flameout state, and the power supply of the detection terminal is switched to the backup battery, so that the detection terminal is connected to the vehicle. Scan inside.

Wherein, the step of scanning the interior of the vehicle through the detection terminal to obtain the scanning data includes: scanning the interior of the vehicle through the millimeter-wave radar sensor to obtain scanning data of the reflected signal.

S12, the detection terminal analyzes and processes the scan data, and confirms whether there is a living object in the vehicle.

Wherein, the step of analyzing and processing the scan data to confirm whether there is a living object in the vehicle includes:

By analyzing and processing the reflected signal in the scan data, the distance, speed and direction of the reflected object are confirmed to determine whether there is a living object in the vehicle.

In particular, when someone in the car is sleeping or sitting and resting, the breathing of the human body will cause the thoracic cavity and abdominal cavity to move slightly, that is, during thoracic breathing, the chest will expand when inhaling, and the chest will sag when exhaling, forming such a breath. When breathing in, the abdomen is bulging, and when exhaling, the abdomen is concave, forming such a breathing movement, so the radar sensor detects the micro-movement changes in the breathing to detect the existence of living targets in the car . S13, if so, obtain the distance between the detection terminal and the alarm terminal, and determine whether the distance is greater than a preset distance, and if so, trigger the alarm terminal to issue an alarm.

Wherein, the step of judging whether the distance is greater than the preset distance, and if so, triggering the alarm terminal to issue an alarm includes:

When it is determined that the distance is greater than the preset distance, and the duration greater than the preset distance is greater than the first time, the alarm terminal is triggered to issue an alarm. The preset distance and the first time can be set and adjusted as required, for example, the first time is set to 5 minutes or 10 minutes, and the preset distance is set to 100m or 200m. When the driver leaves the vehicle, a certain electronic fence can be established between the driver and the living object left in the vehicle, and the reliability of the system can be improved by judging the preset distance and the first time at the same time, avoiding false alarms and affecting the use effect. .

In this embodiment, the distance between the detection terminal and the alarm terminal is obtained based on Bluetooth RSSI, and further, the wireless communication master module and the wireless communication slave module are low-power Bluetooth modules. The signal of the information is then received by the alarm terminal to realize near field communication, and then determine the distance between the two. In addition, because Bluetooth is limited by distance, the two Bluetooth devices will keep communicating within a certain range. Once the communication is interrupted, it can be known that the driver is far away from the vehicle. Therefore, by setting a critical threshold, when the two Bluetooth When the distance exceeds this critical threshold, the alarm in the alarm terminal is triggered to sound an alarm. In order to prevent the situation of the occupants left in the car from being informed in time when there is no signal.

Further, in another embodiment, the method further includes:

S14, when it is confirmed that the alarm terminal does not respond within a preset time, triggering the lights and/or the horn in the vehicle to issue an alarm through the detection terminal. The preset time can be set as required, for example, the preset time is set to 10 minutes or 20 minutes. By judging whether the driver's side perceives the alarm issued by the alarm terminal within a preset time, it can avoid the threat to the life and health of the living object left in the car due to the driver's negligence, and then send an alarm through the device in the vehicle. , to achieve a variety of rescue methods and improve safety.

Further, in another embodiment, the method further includes:

S10, in response to the vehicle starting operation, initialize the monitoring system, and verify and pair the detection terminal and the alarm terminal to establish communication between the detection terminal and the alarm terminal connect. By initializing and pairing the monitoring system when the vehicle is started, it is convenient to scan the inside of the vehicle in time when the vehicle is turned off, accurately obtain the situation in the vehicle for reminder, and improve the safety of the occupants.

In a specific implementation, as shown in Figure 4, the specific implementation process includes:

1) After the car is ignited, start powering on the entire system through the cigarette lighter interface of the power module, and complete the system initialization;

2) The wireless communication master module and the wireless communication slave module are checked and paired, if the matching is successful, go to step 3);

3) By judging the voltage level of the cigarette lighter interface, it is judged whether the engine of the vehicle is turned off; if the level of the cigarette lighter interface is set low, it means that the car has been turned off and stopped moving, otherwise it is in a driving state;

4) When it is confirmed that the vehicle is turned off, the power supply module switches to the backup battery working mode;

5) Start the timer to start timing;

6) The radar sensor module starts to work;

7) Judge whether there is a passenger left behind; if someone is judged, further judge the distance between the wireless communication slave module in the alarm terminal carried by the driver and the wireless communication master module installed in the detection terminal on the vehicle;

7.1) If the distance is less than the alarm threshold (for example, the preset distance is 100m), it is considered that the alarm threshold range is not exceeded, and no alarm is required. For example, in the gas station scene, the driver briefly leaves the vehicle to refuel or pay;

7.1.2 If the distance is greater than or equal to the alarm threshold (for example, the preset distance is 100m), the buzzer on the alarm terminal will be triggered to issue an alarm to remind the driver that there are children left in the car;

Otherwise, if it is judged that there is no one, when the wireless communication master module and the wireless communication slave module exceed a certain distance alarm threshold (for example, 100m), they will automatically go offline, thereby saving the power of the system and reducing the frequency of use of the system to prolong the life of the system;

8) If the car owner or driver senses the buzzer alarm and releases the response through the release alarm button of the alarm terminal, the process ends; if the car owner or driver does not respond to the buzzer alarm, the timer will trigger If the preset alarm time is set, if there is still no response within 10 minutes, then an external alarm can be further sent. At this time, a signal can be sent to trigger the vehicle sound and light alarm module to perform sound and light alarm or to trigger the lights and/or horn in the vehicle. Call the police to remind passersby to rescue.

Referring to FIG. 5, it is a schematic structural diagram of a monitoring device for stranded persons in a vehicle according to an embodiment of the present invention.

In this embodiment, the apparatus is implemented based on a monitoring system, wherein the monitoring system includes a detection terminal and an alarm terminal, and the detection terminal and the alarm terminal are connected in communication.

The device 50 includes:

The scanning unit 51 is configured to scan the interior of the vehicle through the detection terminal to obtain scan data when receiving the vehicle flameout signal;

Wherein, the detection terminal includes a millimeter wave radar sensor; the scanning unit 51 is further used for:

The interior of the vehicle is scanned by the millimeter-wave radar sensor to obtain scanning data of the reflected signal.

Further, the detection terminal is connected to a power supply through a cigarette lighter interface, and the detection terminal includes a backup battery; the scanning unit 51 is also used for:

When it is received that the voltage level of the cigarette lighter interface is set to be low, it is determined that the vehicle is in a flameout state, and the power supply of the detection terminal is switched to the backup battery, so that the detection terminal is connected to the vehicle. Scan inside.

a processing unit 52, configured to analyze and process the scan data by the detection terminal to confirm whether there is a living object in the vehicle;

Wherein, the processing unit 52 is further used for:

By analyzing and processing the reflected signal in the scan data, the distance, speed and direction of the reflected object are confirmed to determine whether there is a living object in the vehicle.

The first alarm unit 53 is configured to acquire the distance between the detection terminal and the alarm terminal, and determine whether the distance is greater than a preset distance, and if so, trigger the alarm terminal to issue an alarm.

Further, in another embodiment, the apparatus 50 further includes:

The second alarm unit is configured to trigger the lamp and/or the horn in the vehicle to issue an alarm through the detection terminal when it is confirmed that the alarm terminal does not respond within a preset time.

Further, in another embodiment, the apparatus 50 further includes:

The pairing unit is used to initialize the monitoring system in response to the start-up operation of the vehicle, and verify and pair the detection terminal and the alarm terminal to establish a relationship between the detection terminal and the alarm terminal. communication connection between.

Each unit module of the apparatus 50 can respectively execute the corresponding steps in the above method embodiments, so each unit module will not be repeated here. For details, please refer to the description of the corresponding steps above.

It should be noted that the device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical unit, that is, it can be located in one place, or it can be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. In addition, in the drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative effort.

The embodiments in the above-mentioned embodiments can be further combined or replaced, and the embodiments are only to describe the preferred embodiments of the present invention, and not to limit the concept and scope of the present invention. Various changes and improvements made to the technical solutions of the present invention by professional and technical personnel all belong to the protection scope of the present invention.

Claims (10)

1. A method for monitoring persons stranded in a vehicle, wherein the method is implemented based on a monitoring system, wherein the monitoring system comprises a detection terminal and an alarm terminal, the detection terminal and the alarm terminal are connected in communication, and the Methods include: When receiving the vehicle flameout signal, scan the interior of the vehicle through the detection terminal to obtain scan data; The scanning data is analyzed and processed by the detection terminal to confirm whether there is a living object in the vehicle; If so, obtain the distance between the detection terminal and the alarm terminal, and determine whether the distance is greater than a preset distance, and if so, trigger the alarm terminal to issue an alarm. 2 . The method for monitoring stranded persons in a vehicle according to claim 1 , wherein after the alarm terminal is triggered to issue an alarm, the method further comprises: 2 . When it is confirmed that the alarm terminal does not respond within a preset time, the detection terminal is used to trigger the lights and/or the horn in the vehicle to issue an alarm. 3 . The method for monitoring stranded persons in a vehicle according to claim 1 , wherein the detection terminal comprises a millimeter-wave radar sensor; the step of scanning the interior of the vehicle through the detection terminal to obtain scan data. 4 . The method includes: scanning the interior of the vehicle through the millimeter-wave radar sensor to obtain scanning data of the reflected signal. 4. The method for monitoring stranded persons in a vehicle according to claim 3, wherein the step of analyzing and processing the scan data and confirming whether there is a living object in the vehicle comprises: By analyzing and processing the reflected signal in the scan data, the distance, speed and direction of the reflected object are confirmed to determine whether there is a living object in the vehicle. 5 . The method for monitoring stranded persons in a vehicle according to claim 1 , wherein the detection terminal is connected to a power supply through a cigarette lighter interface, and the detection terminal comprises a backup battery; when the vehicle flameout signal is received. 6 . , the step of scanning the interior of the vehicle through the detection terminal includes: When it is received that the voltage level of the cigarette lighter interface is set to be low, it is determined that the vehicle is in a flameout state, and the power supply of the detection terminal is switched to the backup battery, so that the detection terminal is connected to the vehicle. Scan inside. 6 . The method for monitoring persons stranded in a vehicle according to claim 1 , wherein when the vehicle flameout signal is received, the detection terminal is used to scan the interior of the vehicle, and before scanning data is obtained, the method further includes: 7 . : In response to the starting operation of the vehicle, the monitoring system is initialized, and the detection terminal and the alarm terminal are checked and paired to establish a communication connection between the detection terminal and the alarm terminal. 7. A monitoring device for persons stranded in a vehicle, characterized in that the device is implemented based on a monitoring system, wherein the monitoring system comprises a detection terminal and an alarm terminal, the detection terminal and the alarm terminal are connected in communication, and the The device includes: a scanning unit, configured to scan the interior of the vehicle through the detection terminal to obtain scan data when receiving the vehicle flameout signal; a processing unit, configured to analyze and process the scan data by the detection terminal to confirm whether there is a living object in the vehicle; The first alarm unit is configured to obtain the distance between the detection terminal and the alarm terminal if so, and determine whether the distance is greater than a preset distance, and if so, trigger the alarm terminal to issue an alarm. 8. The device for monitoring stranded persons in a vehicle according to claim 7, wherein the device further comprises: The second alarm unit is configured to trigger the lamp and/or the horn in the vehicle to issue an alarm through the detection terminal when it is confirmed that the alarm terminal does not respond within a preset time. 9 . The monitoring device for stranded persons in a vehicle according to claim 7 , wherein the device further comprises: 10 . The pairing unit is used to initialize the monitoring system in response to the start-up operation of the vehicle, and verify and pair the detection terminal and the alarm terminal to establish a relationship between the detection terminal and the alarm terminal. communication connection between. 10 . The monitoring device for stranded persons in a vehicle according to claim 7 , wherein the detection terminal is connected to a power source through a cigarette lighter interface, and the detection terminal comprises a backup battery; the scanning unit is further used for 10 . : When it is received that the voltage level of the cigarette lighter interface is set to low, it is judged that the vehicle is in an off state, and the power supply of the detection terminal is switched to the backup battery, so that the detection terminal is connected to the vehicle. Scan inside.

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