Vehicle-mounted device for detecting drunk driving

Abstract

The utility model discloses a vehicle-mounted device for detecting drunk driving. The vehicle-mounted device comprises a relay, an ESP32 single chip microcomputer, an MQ3 alcohol sensor, a display screen, a camera, an alarm lamp, a remote communication module and a power supply. The MQ3 alcohol sensor is installed at the position of an A column of an original vehicle, the camera is installed at the position of a sun shield of a driving position of the original vehicle through the rotating base, and the shooting angle of the camera covers the driving position of the original vehicle. The MQ3 alcohol sensor, the first power supply, the camera, the remote communication module and the display screen are all connected with the ESP32 single chip microcomputer; a buzzer alarm circuit is arranged in the alarm lamp, a key module and an information transmission module are arranged in the display screen, and each module is connected with the ESP32 single-chip microcomputer in parallel. According to the utility model, the vehicle-mounted device is connected with the automobile starting circuit, so that quick response is realized for forbidding starting; the alcohol sensor and the camera are combined for dual detection, so that the detection accuracy is improved; and a remote communication module is also arranged, so that remedy is carried out when the driver drinks but the vehicle is started, and information is sent to an emergency contact person in time.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted equipment, and in particular to a vehicle-mounted device for detecting drunk driving. Background Art

[0002] Cars have become an indispensable means of transportation in daily life. However, traffic safety issues are becoming increasingly prominent, and drunk driving is one of the important factors threatening road traffic safety. At present, the main means of preventing drunk driving are still based on strict legislation, punishing drunk driving, vigorously promoting traffic safety, and raising people's awareness of traffic safety. At present, the drunk driving detection method is almost always to stop the car while it is moving and use a breath alcohol tester to detect drunk driving. This detection method has defects such as limited coverage and high randomness, and lacks an effective pre-prevention mechanism.

[0003] The development of effective drunk driving detection and prohibition devices is of great significance to ensuring road traffic safety and reducing traffic accidents. At the same time, the rapid development of sensor technology, information technology and artificial intelligence technology also provides strong technical support.

[0004] At present, common drunk driving detection technologies mainly include breath alcohol testing and blood or urine alcohol testing. Breath alcohol testing: The alcohol content in the driver's exhaled gas is used to determine whether he is drunk driving. This technology is easy to operate and fast, but the test results may be affected by factors such as the driver's breathing method and exhaled volume. Blood or urine alcohol testing: By taking a blood sample or urine sample from the driver and measuring the alcohol content in it to determine whether he is drunk driving. This technology is highly accurate, but it is highly professional, complex to operate, time-consuming, and may cause certain harm to the driver.

[0005] Based on the above-mentioned drunk driving detection technology, the common start-up prohibition device is mainly an oil-cut-off start-up prohibition device that acts on the vehicle's fuel supply system. This device prevents the engine from starting by controlling the fuel supply system's oil circuit. A control valve is set before the fuel pump or injector, and the valve is controlled by the control module. When the control module detects that the driver is in a drunk driving state or meets other preset conditions, it will close the control valve, cut off the fuel supply, and thus prevent the engine from starting.

[0006] However, the current prohibition devices contain at least the following three problems:

[0007] 1) The start-up prohibition device cuts off the fuel supply of the oil system by controlling the valve. It takes a certain amount of time to close the valve or pump, and the response speed is slow;

[0008] 2) The accuracy of drunk driving detection is insufficient. First, there may be situations where the driver is not drunk but the passenger is. Second, the detection method is single and there is a certain error rate.

[0009] 3) Once the driver drinks but the vehicle has already started, the immobilizer is no longer effective and there is no remedial measure. Utility Model Content

[0010] In view of the above three problems, the purpose of the utility model is to propose a vehicle-mounted device for detecting drunk driving. By connecting the vehicle-mounted device for detecting drunk driving with the car starting circuit, a quick response is made to prohibit starting, thus saving the time of closing the valve; at the same time, a MQ3 alcohol sensor and a camera are combined for double detection to improve the accuracy of detection; in addition, an alarm light and a remote communication module are provided to take remedial measures when the driver has drunk alcohol but the vehicle has been started, and to promptly issue an early warning and send information to emergency contacts.

[0011] This is achieved through the following technical solutions:

[0012] A vehicle-mounted device for detecting drunk driving, the vehicle-mounted device is connected to IGN1 of an original vehicle starting circuit, the vehicle-mounted device comprises a relay, an ESP32 single-chip microcomputer, an MQ3 alcohol sensor, a display screen, a camera, an alarm light, a remote communication module and a power supply, wherein the power supply comprises a first power supply and a second power supply; the MQ3 alcohol sensor is installed at the A-pillar position of the original vehicle, the camera is installed at the sun visor position of the driving position of the original vehicle through a rotatable rotating base, and the shooting angle of the camera covers the driving position of the original vehicle; the MQ3 alcohol sensor, the first power supply, the camera, the remote communication module and the display screen are all connected to the ESP32 single-chip microcomputer, the first end of the relay is connected to the second power supply, the second end of the relay is connected to IGN1, the third end of the relay is closed-loop connected to the ESP32 single-chip microcomputer, and the fourth end of the relay is connected to the alarm light; wherein the alarm light has a built-in buzzer alarm circuit, the display screen has a built-in key module and an information transmission module, and each module is connected in parallel to the ESP32 single-chip microcomputer.

[0013] Connecting the on-board device directly to the original vehicle's starting circuit enables quick response and effective vehicle starting prohibition; dual detection by camera and MQ3 alcohol sensor improves detection accuracy; in addition, warning lights and remote communication modules are added to enable quick remediation when the driver has started the vehicle after drinking.

[0014] Preferably, the ESP single chip is also connected to a voice player, which consists of a player body and a shell, and the shell is provided with a plurality of shock-absorbing pads. The voice player can make a voice alarm to remind the driver and other people in the car, and the shock-absorbing pads can reduce the impact of vehicle vibration and extend the service life.

[0015] Preferably, the vehicle-mounted device further comprises a GPS module, which is connected in parallel with the warning light. When the warning light is working, the GPS module will also transmit the vehicle's location information via the remote communication module to promptly inform other contacts of the location of the drunk driver.

[0016] Preferably, the display screen also has a built-in authorization module, which is connected to the ESP32 microcontroller, and the authorization module, the key module, and the information transmission module are all parallel structures. Camera shooting involves personal privacy, and the authorization module can be authorized by the driver to choose whether to enable the camera.

[0017] Preferably, the buzzer alarm circuit uses a 1kΩ resistor, a PNP transistor, a buzzer and an IN4007 diode. The buzzer and the IN4007 diode are connected in a closed loop and then connected to the collector of the PNP transistor. The base of the PNP transistor is connected to the relay through a 1kΩ resistor. The emitter of the PNP transistor is connected to a 5V power supply, and the buzzer and the IN4007 diode are grounded. The buzzer alarm circuit uses an IN4007 diode for rectification, making the circuit more stable and reliable.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The technical solution of the utility model connects the vehicle-mounted device for detecting drunk driving with the car starting circuit, quickly responds to prohibit starting, and saves the time of closing the valve; at the same time, it combines the MQ3 alcohol sensor and the camera for double detection to improve the accuracy of detection; in addition, an alarm light and a remote communication module are provided to take remedial measures when the driver has drunk alcohol but the vehicle has been started, and to provide timely warnings and send information to emergency contacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of connecting a vehicle-mounted device for detecting drunk driving with an original vehicle starting circuit;

[0021] Figure 2 The present invention is a schematic diagram of a buzzer alarm circuit in a vehicle-mounted device for detecting drunk driving. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Example

[0023] like Figure 1As shown, it is a structural diagram of the connection between the vehicle-mounted device for detecting drunk driving and the original vehicle starting circuit. The vehicle-mounted device is connected to IGN1 of the original vehicle starting circuit. IGN1 is a built-in relay in the original vehicle, which is used to control the engine computer, transmission computer, body electrical and PEPS starting system in the original vehicle. Here, the engine computer controls whether the engine in the original vehicle is started, the transmission computer controls the speed change of the original vehicle, the body electrical controls the power supply, and the PEPS starting system is the vehicle starting system in the original vehicle.

[0024] The vehicle-mounted device includes a relay, an ESP32 microcontroller, an MQ3 alcohol sensor, a display screen, a camera, an alarm light, a remote communication module and a power supply. The power supply includes a first power supply and a second power supply. The first power supply is a 5V power supply for the ESP32 microcontroller, and the second power supply is a DC +12V power supply, that is, a 12V direct current power supply, which is used to control whether the relay works. Both power supplies can be charged and discharged, and they have started working before the driver starts the car. When the car is started, they can be charged. The MQ3 alcohol sensor is installed at the A-pillar position of the original car, that is, the pillar between the front windshield and the front door. This place is closer to the driving seat and can detect whether there is alcohol gas more quickly. The camera can be rotated freely to adjust the direction. The camera is installed at the sun visor position of the original car driving seat through a rotatable rotating base. Here, the camera's shooting angle can cover the original car driving seat, so as to obtain the driver's facial feature photos. When the camera is enabled, the camera transmits the current facial feature photos to the ESP32 microcontroller. The ESP32 microcontroller compares the current facial feature photos with the normal facial features, which can assist in detecting whether the driver is drunk driving.

[0025] The MQ3 alcohol sensor, the first power supply, the camera, the remote communication module and the display screen are all connected to the ESP32 microcontroller, the first end of the relay is connected to the second power supply, the second end of the relay is connected to IGN1, the third end of the relay is closed-loop connected to the ESP32 microcontroller, and the fourth end of the relay is connected to the alarm light.

[0026] like Figure 2 As shown, it is a schematic diagram of a buzzer alarm circuit in a vehicle-mounted device for detecting drunk driving. The buzzer alarm circuit built into the warning light uses a 1kΩ resistor, a PNP transistor, a buzzer and an IN4007 diode. The 1kΩ resistor is used to limit the current, thereby protecting the base of the PNP. The buzzer and the IN4007 diode are connected in a closed loop and then connected to the collector of the PNP transistor. The base of the PNP transistor is connected to the relay through a 1kΩ resistor. The emitter of the PNP transistor is connected to a 5V power supply, and the buzzer and the IN4007 diode are grounded. The buzzer alarm circuit has a relatively simple structure and low cost. It also uses an IN4007 diode for rectification, making the circuit more stable and reliable.

[0027] In this embodiment, the display screen has a built-in key module and an information transmission module, each of which is connected in parallel with the ESP32 microcontroller. The key module is used to support the driver to perform touch screen operations, and the information transmission module is used to support the driver to enter the information of the emergency contact and store it in the ESP32 microcontroller.

[0028] In addition, since camera photography involves personal privacy, especially when there may be other passengers in the car besides the driver, the display screen can also have a built-in authorization module, allowing the driver to authorize shooting or prohibit shooting without authorization. The authorization module is connected to the ESP32 microcontroller, which stores and controls it. At the same time, the authorization module, the button module, and the information transmission module are all parallel structures. Even if one party makes a mistake, there will be no impact on each other.

[0029] It should be noted that the MQ3 alcohol sensor is a gas sensor that detects alcohol concentration in the air. It converts the detected alcohol concentration into an electrical signal based on gas-sensitive materials. It has excellent characteristics such as high sensitivity, strong anti-interference and low cost. The ESP32 microcontroller is a 32-bit dual-core processor SOC with high performance, low power consumption and high processing speed. It can react quickly when drunk driving is detected, prohibit driving in time, or quickly transmit signals when remedial measures are needed.

[0030] In this embodiment, the ESP single-chip computer is also connected to a voice player, which consists of a player body and a shell. The body and the shell can be directly connected through multiple brackets, or can be spaced and shock-absorbing by fillers. The shell is provided with multiple shock-absorbing pads to reduce vibration when the vehicle is driving, thereby increasing the service life.

[0031] In this embodiment, the vehicle-mounted device further includes a GPS module, which is connected in parallel with the warning light. When the warning light is working, the GPS module will also transmit the vehicle's location information via the remote communication module to promptly inform the emergency contact of the location of the drunk driver.

[0032] Specific application examples

[0033] A driver is preparing to drive to a banquet and sits in the driving seat. The vehicle-mounted device for detecting drunk driving is in constant operation. At this time, it is already running. The MQ3 alcohol sensor does not detect alcohol. The driver starts the car normally. The first power supply and the second power supply in the vehicle-mounted device for detecting drunk driving continue to discharge and charge at the same time.

[0034] Considering that he would most likely drink alcohol at the banquet, the driver was worried that he might drive under the influence, so he clicked on the display screen of the vehicle-mounted device that detects drunk driving and entered the information of the emergency contact, which was stored in the ESP32 microcontroller. The driver also authorized the camera to take pictures and adjusted the rotating base of the camera to ensure that the camera's shooting angle could cover his facial area in the main driver's seat, and then went to the banquet.

[0035] After the banquet, the driver was indeed drunk, with a red face. When he opened the car door, the MQ3 alcohol sensor did not detect drunk driving because the alcohol took some time to evaporate and spread. When the driver sat in the driver's seat, the driver was closer to the MQ3 alcohol sensor, and the alcohol gas also spread to a certain extent. The MQ3 alcohol sensor successfully detected the alcohol and then transmitted the alcohol signal to the ESP32 microcontroller.

[0036] At the same time, the camera also captures the driver's current photo, especially the photo of his facial features, and transmits the photo to the ESP32 microcontroller for comparison. The current photo is compared with the normal photo previously stored in the ESP32 microcontroller, especially the facial features, to conclude that the driver is drunk.

[0037] The ESP32 microcontroller double-confirms that the driver is drunk driving by comparing the signal of the MQ3 alcohol sensor and the result of the camera shooting, so it controls the relay to start working, and uses the relay to affect the IGN1 in the original car, prohibiting the original car from starting; at the same time, the warning light starts flashing and the voice alarm starts to remind the driver that he is drunk driving; the ESP32 microcontroller also sends the vehicle's current location information and the driver's drunk driving information to the emergency contact through the remote communication module and GPS module.

[0038] The driver was unable to start the vehicle and, aware of the risk of his drink-driving, waited for an emergency contact to arrive to take the wheel.

[0039] In summary, the utility model connects the vehicle-mounted device for detecting drunk driving with the car starting circuit, quickly responds to prohibit starting, and saves the time of closing the valve; at the same time, it combines the MQ3 alcohol sensor and the camera for double detection to improve the accuracy of detection; in addition, an alarm light and a remote communication module are provided to remedy the situation when the driver drinks but the vehicle has been started, and to promptly issue warnings and send information to emergency contacts, which is significantly progressive.

[0040] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A vehicle-mounted device for detecting drunk driving, the vehicle-mounted device is connected to the IGN1 of the original vehicle starting circuit, characterized in that: The vehicle-mounted device includes a relay, an ESP32 single-chip microcomputer, an MQ3 alcohol sensor, a display screen, a camera, a warning light, a remote communication module and a power supply, wherein the power supply includes a first power supply and a second power supply; The MQ3 alcohol sensor is installed at the A-pillar position of the original car, and the camera is installed at the sun visor position of the original car driving seat through a rotatable rotating base. The shooting angle of the camera covers the original car driving seat; the MQ3 alcohol sensor, the first power supply, the camera, the remote communication module and the display screen are all connected to the ESP32 microcontroller, the first end of the relay is connected to the second power supply, the second end of the relay is connected to IGN1, the third end of the relay is connected to the ESP32 microcontroller in a closed loop, and the fourth end of the relay is connected to the alarm light; among them, the alarm light has a built-in buzzer alarm circuit, and the display screen has a built-in key module and an information transmission module, and each module is connected in parallel with the ESP32 microcontroller.

2. A vehicle-mounted device for detecting drunk driving according to claim 1, characterized in that: The ESP single chip is also connected to a voice player, which consists of a player body and a shell, and the shell is provided with a plurality of shock-absorbing pads.

3. The vehicle-mounted device for detecting drunk driving according to claim 1, characterized in that: The vehicle-mounted device further comprises a GPS module, and the GPS module is connected in parallel with the warning light.

4. The vehicle-mounted device for detecting drunk driving according to claim 1, characterized in that: The display screen also has a built-in authorization module, which is connected to the ESP32 microcontroller. At the same time, the authorization module, the button module and the information transmission module are all parallel structures.

5. The vehicle-mounted device for detecting drunk driving according to claim 1, characterized in that: The buzzer alarm circuit uses a 1kΩ resistor, a PNP transistor, a buzzer and an IN4007 diode. The buzzer and the IN4007 diode are connected in a closed loop and then connected to the collector of the PNP transistor. The base of the PNP transistor is connected to the relay through a 1kΩ resistor. The emitter of the PNP transistor is connected to a 5V power supply, and the buzzer and the IN4007 diode are grounded.

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