CN105128627A - Overheat protection device for automobile - Google Patents

Abstract

The invention provides an automobile over-temperature protection device, which acquires images inside the car through cameras installed in the front and rear seats, and the processor adopts image recognition technology to identify the image information to determine whether there are people in the car. Finally, the processor compares the temperature obtained by the temperature sensor with the preset safe temperature. If the temperature in the car exceeds the preset safe temperature, the processor starts the power unit and turns on the air conditioner to reduce the temperature in the car. Since this embodiment uses image recognition technology to identify the people in the car, compared with the existing infrared technology, it can avoid the interference of environmental factors and equipment failures on the recognition of the people in the car, and further improve the accuracy of recognition, thereby improving the performance of the car. safety performance. In addition, since the temperature in the car exceeds the preset safe temperature, the air-conditioning device is turned on immediately to reduce the temperature inside the car, so as to avoid the danger of life of the occupants in the car due to the long-term high temperature in the car, and improve the safety performance of the car.

Description

Automobile over-temperature protection device

technical field

The invention relates to an automobile intelligent technology, in particular to an automobile over-temperature protection device.

Background technique

When the temperature is high, especially in hot summer, the temperature inside the car is often much higher than the ambient temperature, sometimes even reaching 50°-60° or more, if the car is placed outside, especially directly exposed to the sun. However, in such hot weather, due to the negligence of adults, children are forgotten in the back seat of the car and the incidents of heatstroke and even death of children due to high temperature occur from time to time, causing serious consequences and irreparable losses.

Contents of the invention

The invention provides an automobile over-temperature protection device which improves automobile safety.

The first aspect provided by the present invention is to provide an automobile over-temperature protection device, the device is arranged in the vehicle, including: at least one front camera, at least one rear camera, temperature sensor, processor, power unit, air conditioner device;

Wherein, the at least one front camera, the at least one rear camera, the temperature sensor, the power unit and the air conditioner are respectively connected to the processor;

The at least one front camera is used to obtain image information of the front seats in the car;

The at least one rear camera is used to obtain image information of rear seats in the vehicle;

The temperature sensor is used to obtain the temperature in the car;

The processor is configured to judge whether there is anyone in the car according to the image information of the front seats in the car and the image information of the rear seats in the car; if so, judge whether the temperature in the car exceeds the preset safety temperature; if the temperature inside the car exceeds the preset safe temperature, start the power unit and turn on the air conditioner to reduce the temperature inside the car.

With reference to the first aspect, in a first possible implementation manner, the power device includes: an ignition device and an engine;

The ignition device is connected to the processor, the ignition device is connected to the engine; the engine is connected to the air conditioner;

The processor is specifically configured to trigger the ignition device to start the engine if the temperature inside the vehicle exceeds a preset safety temperature;

The engine is used to drive the air conditioner for refrigeration.

With reference to the first aspect, in a second possible implementation manner, the power device is a battery;

The battery is connected to the processor; the battery is connected to the air conditioner;

The processor is specifically configured to turn on the battery if the temperature inside the vehicle exceeds a preset safe temperature;

The battery is used to drive the air conditioner for refrigeration.

In combination with the first aspect or any one of the above-mentioned possible implementations of the first aspect, in the third possible implementation, it also includes: a communication module and a positioning module;

The communication module and the positioning module are respectively connected to the processor;

The positioning module is used to obtain the location information of the vehicle;

The communication module is configured to send an alarm message to a preset contact when the temperature inside the vehicle exceeds a preset safe temperature, and the alarm message includes an alarm indication and location information of the vehicle.

In combination with the first aspect, the fourth possible implementation also includes: a vehicle light control module and a horn control module;

The vehicle light control module is connected to the processor; the horn control module is connected to the processor;

The car light control module is used to turn on the car lights to give an alarm prompt when the temperature inside the car exceeds a preset safe temperature;

The horn control module is used for sounding a horn to give an alarm prompt when the temperature inside the vehicle exceeds a preset safe temperature.

In combination with the fourth possible implementation of the first aspect, in the fifth possible implementation, it further includes: a car lock control module;

The car lock control module is connected to the processor;

The vehicle lock control module is configured to unlock the door lock of the vehicle when the temperature inside the vehicle exceeds a preset safe temperature.

The automobile over-temperature protection device provided by the embodiment of the present invention obtains images in the car through the cameras installed in the front and rear seats, and the processor uses image recognition technology to identify the image information to determine whether there are people in the car. When someone is present, the processor compares the temperature acquired by the temperature sensor with the preset safe temperature. If the temperature inside the car exceeds the preset safe temperature, the processor starts the power unit and turns on the air conditioner to lower the temperature of the car. internal temperature. Since this embodiment uses image recognition technology to identify the people in the car, compared with the existing infrared technology, it can avoid the interference of environmental factors and equipment failures on the recognition of the people in the car, and further improve the accuracy of recognition, thereby improving the performance of the car. safety performance. In addition, since the temperature in the car exceeds the preset safe temperature, the air conditioner is turned on immediately to reduce the temperature inside the car, which prevents the life danger of the occupants in the car due to the long-term high temperature in the car, and improves the safety performance of the car.

Description of drawings

Fig. 1 is a structural schematic diagram of an automobile over-temperature protection device provided by an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of another automobile over-temperature protection device provided by the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention;

Fig. 6 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention;

Fig. 7 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention;

Fig. 8 is a schematic diagram of a main interface provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of a parameter setting interface provided by an embodiment of the present invention;

FIG. 10 is a minimum system circuit diagram of a processor peripheral circuit provided by an embodiment of the present invention;

Fig. 11 is a circuit diagram of a vehicle light control module and a horn control module provided by an embodiment of the present invention;

Fig. 12 is a circuit diagram of a temperature sensor provided by an embodiment of the present invention;

Fig. 13 is a circuit diagram of a DC stabilized power supply provided by an embodiment of the present invention.

Detailed ways

Fig. 1 is a structural schematic diagram of an automobile over-temperature protection device provided by an embodiment of the present invention. The device is arranged in a vehicle. Referring to Fig. 1, the device includes: at least one front row camera 10, at least one rear row camera 11, Temperature sensor 12, processor 13, power unit 14, air conditioner 15;

Wherein, the at least one front camera 10, the at least one rear camera 11, the temperature sensor 12, the power unit 14 and the air conditioner 15 are respectively connected to the processor 13;

The at least one front camera 10 is used to obtain image information of the front seats in the car;

The at least one rear camera 11 is used to obtain image information of rear seats in the car;

The temperature sensor 12 is used to obtain the temperature in the car;

The processor 13 is configured to judge whether there is anyone in the car according to the image information of the front seats in the car and the image information of the rear seats in the car; if so, judge whether the temperature in the car exceeds a preset temperature. Safety temperature: if the temperature inside the vehicle exceeds the preset safety temperature, start the power unit 14 and turn on the air conditioner 15 to reduce the temperature inside the vehicle.

The automobile over-temperature protection device provided by the embodiment of the present invention obtains images in the car through the cameras installed in the front and rear seats, and the processor uses image recognition technology to identify the image information to determine whether there are people in the car. When someone is present, the processor compares the temperature acquired by the temperature sensor with the preset safe temperature. If the temperature inside the car exceeds the preset safe temperature, the processor starts the power unit and turns on the air conditioner to lower the temperature of the car. internal temperature. Since this embodiment uses image recognition technology to identify the people in the car, compared with the existing infrared technology, it can avoid the interference of environmental factors and equipment failures on the recognition of the people in the car, and further improve the accuracy of recognition, thereby improving the performance of the car. safety performance. In addition, since the temperature in the car exceeds the preset safe temperature, the air conditioner is turned on immediately to reduce the temperature inside the car, which prevents the life danger of the occupants in the car due to the long-term high temperature in the car, and improves the safety performance of the car.

Specifically, for how the processor 13 judges whether there are people in the car based on the image information, one implementation method is: first, prefabricate the image information of no one in the car, and then the processor 13 compares the real-time image information with the image information of no one. , so as to determine whether there is an object in the car. Further, in order to determine whether the object is a person, it is possible to periodically compare whether there is a position difference between image information at different time points, so as to determine whether the object is a person. Specifically, if there is a position difference between the image information at two time points, it indicates that the object is a person or a pet. Optionally, the feature information of humans and pets can also be preset in the processor 13 by way of feature recognition, and the processor 13 can identify the image information acquired in real time, obtain the feature information of the image information, and compare it with the preset Compared with the characteristic information of the device, it can determine whether there are people or pets in the car. Specifically, if the feature information of the image information matches the preset feature information successfully, it means that there are people or pets in the car.

Preferably, the processor can first judge whether there is a person in the cab according to the at least one front camera, if there is no one in the cab, then further judge whether there is a person in the rear seat according to the at least one rear camera, and if there is a person, then Judging whether the temperature inside the car exceeds the preset safe temperature, in such a judgment sequence, if the temperature inside the car exceeds the preset safe temperature, start the power unit and turn on the air conditioner to reduce the temperature in the car. temperature. If it is first judged that there are people in the driver's cab, the driver can be prompted to manually start the air conditioner when the temperature in the car exceeds the preset safe temperature through the internal voice, display and other output devices.

Further, the power unit 14 shown above is used to drive the compressor of the air conditioner 15, which can be driven by an engine or by a battery 14-3.

On the basis of Fig. 1, Fig. 2 is a structural schematic diagram of another automobile over-temperature protection device provided by the embodiment of the present invention. Referring to Fig. 2, the power unit 14 includes: an ignition device 14-1 and an engine 14-2;

The ignition device 14-1 is connected to the processor 13, the ignition device 14-1 is connected to the engine 14-2; the engine 14-2 is connected to the air conditioner 15;

The processor 13 is specifically configured to trigger the ignition device 14-1 to start the engine 14-2 if the temperature inside the vehicle exceeds a preset safe temperature;

The engine 14-2 is used to drive the air conditioner 15 for refrigeration.

On the basis of FIG. 1 , FIG. 3 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention. Referring to FIG. 3 , the power device 14 is a battery 14-3;

The battery 14-3 is connected to the processor 13; the battery 14-3 is connected to the air conditioner 15;

The processor 13 is specifically configured to turn on the battery 14-3 if the temperature inside the vehicle exceeds a preset safe temperature;

The battery 14-3 is used to drive the air conditioner 15 for cooling.

Further, on the basis of FIG. 1, FIG. 4 is a schematic structural diagram of another automobile over-temperature protection device provided by an embodiment of the present invention. Referring to FIG. 4, the device also includes: a communication module 16 and a positioning module 17;

The communication module 16 and the positioning module 17 are respectively connected to the processor 13;

Specifically, the positioning module 17 may adopt multiple positioning mechanisms such as the Global Positioning System (Global Positioning System, GPS for short), and the Beidou system.

The positioning module 17 is configured to acquire the position information of the vehicle;

The communication module 16 is configured to send an alarm message to a preset contact when the temperature inside the vehicle exceeds a preset safe temperature, and the alarm message includes an alarm indication and location information of the vehicle.

Specifically, the communication module 16 can be a phone module inserted with a SIM card. After the processor 13 outputs a control signal to the phone module, the phone module makes circular calls to the car owner and other relevant personnel. And send the location information of the car to the default contact in the form of voice or text message.

Preferably, the processor first judges whether there are people in the cab according to the at least one front camera, if there is no one in the cab, then further judges whether there are people in the rear seats according to the at least one rear camera, and then judges if there are people. Whether the temperature in the car exceeds the preset safe temperature, if the temperature in the car does not exceed the preset safe temperature, then the communication module 16 delays for a period of time and then sends an alarm message to the contact; If the temperature has exceeded the preset safety temperature, the communication module 16 immediately sends an alarm message to the contact person.

On the basis of Fig. 1, Fig. 5 is a structural schematic diagram of another automobile over-temperature protection device provided by the embodiment of the present invention. Referring to Fig. 5, it also includes: a car light control module 18 and a horn control module 19;

The lamp control module 18 is connected to the processor 13; the horn control module 19 is connected to the processor 13;

The car light control module 18 is used to turn on the car lights to give an alarm prompt when the temperature inside the car exceeds a preset safe temperature;

The horn control module 19 is configured to sound a horn to give an alarm prompt when the temperature inside the vehicle exceeds a preset safe temperature.

In this embodiment, the car lights and horns are controlled by using the car light control module 18 and the horn control module 19 to attract the attention of people around the vehicle, thereby further improving the safety of the vehicle.

On the basis of FIG. 5 , FIG. 6 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention. Referring to FIG. 6 , the device also includes: a car lock control module 20 ;

The lock control module 20 is connected to the processor 13;

The vehicle lock control module 20 is configured to unlock the door lock of the vehicle when the temperature inside the vehicle exceeds a preset safe temperature.

Optionally, the device provided in the foregoing embodiments may further include: a memory, where the memory is used to store data such as map software.

On the basis of FIG. 1 , FIG. 7 is a structural schematic diagram of another automobile over-temperature protection device provided by an embodiment of the present invention. Referring to FIG. 7 , the device also includes: a touch-type liquid crystal display 21 .

Fig. 8 is a schematic diagram of a main interface provided by the embodiment of the present invention. Referring to Fig. 8, the interface is used to set and display four related parameters, which are early warning temperature value, dangerous temperature value, delayed alarm time and alarm contact Telephone. If you need to modify a parameter, just double-click the parameter button, and the system will enter the corresponding parameter setting interface. After the parameter is set, click the return button, and the system will return to the main interface.

Fig. 9 is a schematic diagram of a parameter setting interface provided by an embodiment of the present invention. Referring to Fig. 9, wherein: 11-1 is a numeric input key, including 0 to 9 numeric keys and a decimal point key, and the numeric input key 11-1 is used to input Parameter; 11-2 is a parameter display box, which is used to display in real time the parameter value input by the number input key; 11-3 is a function key, including a delete key, a confirmation key and a return key; if the input parameter is wrong, you can pass Delete key to delete, each time the delete key is pressed to delete the last digit entered, if the input parameters are confirmed to be correct, press the confirm key to confirm, then the processor 13 will save the input parameters, and when the parameter setting is completed After that, you can press the back key to return to the previous interface, that is, return to the main interface.

The concrete operation of touch-type liquid crystal display screen 21 is described in detail again below:

Taking the setting of the dangerous temperature value as an example, the system will enter the main interface as shown in Figure 8 after the system is turned on. On this interface, double-click the "dangerous temperature value" button, and the system enters the parameter setting interface shown in Figure 9. Use the number input key 11-1 and function key 11-3 on the interface to complete the input and modification of parameters. The parameter display box 11-2 can display the input parameters in real time. After the input parameters are confirmed to be correct, click the confirmation key, and the processor 13 will save the input parameters, and then click the return key to return to the main interface. After the secondary parameter setting is completed, the dangerous temperature value displayed on the main interface is the newly set parameter. The settings of early warning temperature value, delayed alarm time and alarm contact number are the same, and will not be repeated here.

If you want to modify the entered alarm contact number, double-click the phone number, and then enter the parameter setting interface to modify. If you want to delete a certain alarm contact number, double-click the phone number. After entering the parameter setting interface without inputting a number, just click the confirmation button, and the phone number will be deleted. After you click the return button to return to the main interface, the original The alarm contact number is replaced by a "+" sign. To add an alarm contact number, just click the "+" button to enter the parameter setting interface and input the corresponding phone number. In the present invention, the number of alarm contact numbers set can be set according to needs, but at least one alarm contact number needs to be set. After completing the setting of all parameters, if no operation is performed within a certain period of time, the touch-type liquid crystal display screen 21 will be automatically locked with a black screen.

If the touch-type liquid crystal display 21 is in the black screen locked state, only need to double-click any part of the screen, then the screen will light up, and the system will enter the main interface as shown in Figure 8 after a few seconds.

The working principle of the present invention is as follows:

After setting various parameters through the touch-type liquid crystal display screen 21, the camera placed in the cab position obtains the image information of the cab in real time. 12. The temperature in the car is detected. If the temperature in the car does not reach the pre-warning set value, then after a certain time delay, the communication module 16 is used to make circular calls to the car owner and other relevant personnel, and the positioning module 17 is used to determine the location of the car. Latitude and longitude value, and according to this latitude and longitude value, find its corresponding location information (including nearby landmark building) by the map data stored in memory according to this latitude and longitude value, processor 13 will generate voice with the location information of warning content and above-mentioned car after telephone is connected Prompt and explain to relevant personnel, make it know the specific location of people and automobile in the car; It will also start the power unit 14 and turn on the air conditioner 15 to reduce the temperature in the car, and also send an audible and visual alarm through the lamp control module 18 and the horn control module 19 to attract the attention of people around. The car lock control module 20 controls the unlocking of the car door, so that the occupants in the car can leave the car smoothly; if the temperature in the car further rises to a dangerous value and the phone of the car owner and other relevant personnel is dialed circularly and no one answers, then directly dial 119. Utilize positioning module 17 and processor 13 to explain the specific location of alarm reason and automobile to firefighters simultaneously, make firefighters can rush to the scene quickly to get rid of danger.

If processor 13 detects that there is someone in the driver's cab by at least one front camera 10, except that at least one front camera 10 and touch-type liquid crystal display 21 are in tracking detection state, other modules will enter dormant state, and once detect driver's cab If no one is there, the entire control system will re-enter the working state.

Figure 10 is a minimum system circuit diagram of a processor peripheral circuit provided by the embodiment of the present invention. Referring to Figure 10, the processor adopts a 32-bit single-chip microcomputer model STM32F407ZET6, wherein the 6th pin is connected to the power supply circuit of the backup area, and the 8th and 9th pins Connect to the RTC clock crystal oscillator circuit, the 23rd and 24th pins are connected to the system clock crystal oscillator circuit, the 25th pin is connected to the system reset circuit, and the 138th and 48th pins are connected to the startup circuit.

Specifically, the reset circuit is to force the program to re-run from the initial position by triggering the reset circuit when the program fails to run (commonly known as "running away"). The trigger reset circuit is triggered by a jog button. Press down to trigger reset, and let go to stop reset. After reset, the program starts to run from the starting position.

Wherein, the backup area power supply circuit is only used to supply power to the backup area of the processor 13 when the external power supply is cut off. Generally, the backup area power supply uses a button battery 14-3 to ensure that the data in the backup area of the processor 13 is not lost and maintained. RTC clock operation.

Further, about the startup circuit: (There are three modes in total)

Under normal circumstances, if you want to use the serial port to download the code, you must configure BOOT0 as 1 (high level), BOOT1 as 0 (low level); and if you want STM32 (processor 13) to start running the code as soon as the reset button is pressed , you need to set BOOT0 to 0, and BOOT1 can be set casually; if you want to debug code, set BOOT0 to 1 and B00T1 to 1. Therefore, setting the optional start-up circuit is mainly to facilitate future software upgrades.

The system clock crystal oscillator circuit is an essential link for the normal operation of the processor 13, and the execution of all instructions of the microprocessing is based on the clock frequency provided by the system clock crystal oscillator circuit. The present invention provides the required clock frequency to the processor 13 through an external active crystal oscillator, and the higher the crystal oscillator frequency provided by the system clock crystal oscillator circuit, the faster the processor 13 runs.

The RTC clock crystal oscillator circuit is used to provide the clock frequency for the RTC clock of the processor 13 .

The functions of the lamp control module 18 and the horn control module 19 can be integrated on one circuit. Specifically, FIG. 11 is a circuit diagram of a lamp control module and a horn control module provided by an embodiment of the present invention. Referring to FIG. 11 , the lamp control module Both the module and the horn control module adopt a relay control module, and the processor 13 controls the opening or closing of the double flashing lights and the loudspeaker control circuit on the car through the relay control module, so as to achieve the purpose of controlling the opening or closing of the sound and light alarm.

Figure 12 is a circuit diagram of a temperature sensor provided by the embodiment of the present invention. Referring to Figure 12, the temperature detection module adopts DS18B20, which is a single-bus sequence, and the temperature measurement range is -55°C ~ +125°C, and the working power supply: 3.0 ~ 5.5V /DC (can be parasitic power supply of data lines), support multi-point networking function, multiple DS18B20 can be connected in parallel on the only three wires, up to 8 in parallel, to achieve multi-point temperature measurement; in actual use, the I/O port line A pull-up resistor of about 5KΩ (4.7k is used in the figure) should be connected.

Figure 13 is a circuit diagram of a DC stabilized power supply provided by the embodiment of the present invention. Referring to Figure 13, L7805 is a step-down module, whose input is directly obtained from the car battery, and the module is stepped down to 5V, and at the same time, it is also passed through AMS1117-3.3 The module steps down the voltage to 3.3V to supply power to the host unit. (L7805: input voltage range: 8-20V, output: 5V; AMS1117-3.3: input: 5V, output: 3.3V).

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (6)

1. An automobile over-temperature protection device, the device is arranged in the vehicle, and is characterized in that it comprises: at least one front row camera, at least one rear row camera, temperature sensor, processor, power unit, air conditioner; Wherein, the at least one front camera, the at least one rear camera, the temperature sensor, the power unit and the air conditioner are respectively connected to the processor; The at least one front camera is used to obtain image information of the front seats in the car; The at least one rear camera is used to obtain image information of rear seats in the vehicle; The temperature sensor is used to obtain the temperature in the car; The processor is configured to judge whether there is anyone in the car according to the image information of the front seats in the car and the image information of the rear seats in the car; if so, judge whether the temperature in the car exceeds the preset safety temperature; if the temperature inside the car exceeds the preset safe temperature, start the power unit and turn on the air conditioner to reduce the temperature inside the car. 2. The device according to claim 1, wherein the power device comprises: an ignition device and an engine; The ignition device is connected to the processor, the ignition device is connected to the engine; the engine is connected to the air conditioner; The processor is specifically configured to trigger the ignition device to start the engine if the temperature inside the vehicle exceeds a preset safety temperature; The engine is used to drive the air conditioner for refrigeration. 3. The device according to claim 1, wherein the power device is a battery; The battery is connected to the processor; the battery is connected to the air conditioner; The processor is specifically configured to turn on the battery if the temperature inside the vehicle exceeds a preset safe temperature; The battery is used to drive the air conditioner for refrigeration. 4. The device according to any one of claims 1-3, further comprising: a communication module and a positioning module; The communication module and the positioning module are respectively connected to the processor; The positioning module is used to obtain the location information of the vehicle; The communication module is configured to send an alarm message to a preset contact when the temperature inside the vehicle exceeds a preset safe temperature, and the alarm message includes an alarm indication and location information of the vehicle. 5. The device according to claim 1, further comprising: a vehicle light control module and a horn control module; The vehicle light control module is connected to the processor; the horn control module is connected to the processor; The car light control module is used to turn on the car lights to give an alarm prompt when the temperature inside the car exceeds a preset safe temperature; The horn control module is used for sounding a horn to give an alarm prompt when the temperature inside the vehicle exceeds a preset safe temperature. 6. The device according to claim 5, further comprising: a car lock control module; The car lock control module is connected to the processor; The vehicle lock control module is configured to unlock the door lock of the vehicle when the temperature inside the vehicle exceeds a preset safe temperature.