Vehicle-mounted safety monitoring system

Abstract

The utility model provides a vehicle-mounted safety monitoring system, which comprises a processor, and an initialization detection module, a temperature detection module, a drunk driving prevention detection module, a sleepiness prevention detection module, an alarm module, a key module and a power supply module which are electrically connected with the processor, different monitoring is carried out on potential safety hazards existing before vehicle parking, starting and driving. The temperature in the vehicle is monitored in real time, and potential safety hazards caused by high temperature in the vehicle are prevented; drunk driving, sleepiness and rear-end collision of the driver are prevented. After initialization detection, the processor judges that a vehicle door is closed and a driver seat is not provided with a person, monitors the temperature in the vehicle in real time when the vehicle is in a parking state, and pre-judges and warns drunk driving, sleepiness and rear-end collision of the driver in time before the vehicle is started and in the driving process; the two monitoring modes are mutually switched, safety monitoring can be carried out on the vehicle before parking, starting and driving, the purpose of preventing danger is achieved, and therefore the safety of the vehicle and a driver is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted safety, and more specifically to a vehicle-mounted safety monitoring system. Background Art

[0002] At present, according to statistics from relevant parties, the number of road traffic accidents in the country is on the rise. Among them, the number of traffic accidents caused by drunk driving, drowsiness or rear-end collisions is the largest. If you can detect and give timely reminders before the driver is drunk driving, drowsy or rear-ends the vehicle, it is one of the effective ways to avoid traffic hazards. When the outdoor temperature reaches 35°C and the sun is shining for 15 minutes, the temperature in the closed car can rise to 65°C. High temperature will accelerate the aging of electronic instruments in the car, reduce the response speed of components, and thus affect the normal operation of the electronic system in the car. In addition, high temperature will also cause the interior decoration of the car to emit harmful gases, such as formaldehyde, which greatly endangers the physical and mental health of the driver, and even causes dangers such as spontaneous combustion. The on-board electronic control system of the existing technology tends to assist the driving of the distance between vehicles or road conditions during the driving process of the vehicle, and rarely monitors whether the driver is drunk driving, drowsy, and the temperature in the car during the parking stage. Utility Model Content

[0003] In view of this, in order to solve the problems existing in the technical background, the utility model proposes a vehicle safety monitoring system, and the specific technical solution is as follows:

[0004] A vehicle safety monitoring system includes a processor, and an initialization detection module, a temperature detection module, an anti-drunk driving detection module, an anti-drowsiness detection module, an alarm module, a key module and a power module electrically connected to the processor; the processor controls whether each module is started, and receives and processes information from each detection module, and the processor is coupled to the power supply of an engine ignition device.

[0005] Furthermore, the initialization detection module is composed of a door sensor and an infrared sensor. The infrared sensor is installed on the roof above the driver's seat, and the door sensor is set in the door frame. Each time the door is closed, the initialization detection module starts to work. The door sensor is set in the door frame. It can be a photoelectric switch, an electromagnetic switch, etc., or the processor can be coupled to the vehicle alarm to directly read the signal of the door magnet. The function is to detect whether the door of the driver's seat is closed. After determining that the door is closed, the infrared sensor starts to detect whether there is someone in the driver's seat. After the initialization detection, when the processor determines that there is no one in the driver's seat, it enters the vehicle "static" safety monitoring mode. In this mode, the temperature detection module works to measure and control the temperature inside the car.

[0006] Furthermore, the temperature detection module includes a temperature sensor, a window controller and a refrigeration device. The temperature sensor is used to detect the temperature inside the car, the window controller is used to control the lifting of the windows, and the refrigeration device is used to cool down. In the vehicle's "static" safety monitoring mode, when the processor determines that the temperature inside the car is higher than the upper limit of the safety temperature, the alarm module sends a reminder message to the owner, the window controller lowers the window 20mm, and turns on the refrigeration device, and the display unit abnormally displays (such as flashing display, changing parameter color, etc.) the current temperature inside the car; when the temperature is lower than the lower limit of the safety temperature, stop sending reminder messages to the owner, the window controller raises the window, turns off the refrigeration device, and the display unit normally displays the current temperature inside the car.

[0007] Further, the anti-drunk driving detection module includes an alcohol sensor and a rotating frame, the rotating frame includes a steering gear, a support tube and a sensor shell, the steering gear is installed on the roof above the driver's seat in the car, the support tube is threadedly connected to the steering gear output shaft, the sensor shell is threadedly connected to the support tube, the sensor shell is encapsulated with an alcohol sensor and an airflow sensing switch, and a gas collection port is left on the surface of the sensor shell. The alcohol sensor is installed opposite to the gas collection port, and the airflow sensing switch is set on the inner wall of the collection port. After the initialization detection, when the processor determines that there is someone in the driver's seat, the vehicle enters the "dynamic" safety monitoring mode. In this mode, the anti-drunk driving detection module and the anti-drowsiness detection module work to monitor whether the driver is drunk driving, drowsy, and monitor the distance between the vehicle and surrounding obstacles. In the vehicle's "dynamic" safety monitoring mode, the anti-drunk driving detection module works first. The steering gear drives the support tube and the sensor shell to rotate clockwise, and the gas collection port can reach near the driver's mouth. When the airflow sensing switch senses a change in airflow, the alcohol concentration value measured by the alcohol sensor is valid. At this time, the processor determines that the driver has completed the blowing action and controls the servo to drive the support tube and the sensor housing to rotate counterclockwise.

[0008] Furthermore, the anti-drowsiness detection module includes a face recognition module, a thin film flexible pressure sensor and an ultrasonic ranging sensor. The face recognition module is installed on the front windshield to detect the degree of opening and closing of the driver's eyes and mouth; the thin film flexible pressure sensor is provided in multiple in the vehicle neck pillow, and the pressure on the neck pillow is distributed to detect the pressure of the driver's head tilting to the left or right when the driver takes a nap. When the processor determines that the pressure value at a certain measurement point of the pressure measurement unit is higher than the preset pressure threshold, the alarm module is activated to make a voice reminder "the driver is drowsy", a vibration reminder, the display unit abnormally displays the pressure value of the point (such as flashing display, changing parameter color, etc.), the wireless communication unit sends the "driver is drowsy" information to the emergency contact, and the GPS positioning unit sends the vehicle's current location information to the emergency contact. The ultrasonic ranging sensor is installed in front of the vehicle body, the left front side, the left rear side, the right front side, the right rear side and the rear side to measure the distance between the vehicle and obstacles in all directions. The distance between the vehicle and obstacles in all directions is monitored in real time and transmitted to the processor, and the display unit displays the distance between the obstacles in all directions in real time. When the processor determines that the alcohol concentration exceeds the safety concentration threshold, the alarm module will give a voice reminder that "the driver is driving under the influence of alcohol", and at the same time cut off the power supply of the engine ignition device. The display unit will abnormally display the currently detected alcohol concentration value (such as flashing display, changing color, etc.), and send the "driver is driving under the influence of alcohol" information to the emergency contact. After that, the safety monitoring of the vehicle ends. When the processor determines that the alcohol concentration does not exceed the safety concentration threshold, the display unit will normally display the detected alcohol concentration value, and the voice broadcast will say "it is safe to travel". After that, the anti-drunk driving detection module stops working, and the anti-drowsiness detection module starts working.

[0009] Furthermore, the processor is a single chip microcomputer STM32.

[0010] Furthermore, the door sensor is a door magnet, and the infrared sensor model is HC-SR501.

[0011] Furthermore, the temperature sensor model is DS18B20.

[0012] Furthermore, the model of the alcohol sensor is MQ3.

[0013] Furthermore, the face recognition module model is DW620, and the ultrasonic ranging sensor model is HC-SR04.

[0014] The above technical solution has the following beneficial effects:

[0015] The utility model implements different monitoring for the potential safety hazards existing when the vehicle is parked, before starting, and during driving. When the vehicle is parked, it enters the "static" safety monitoring mode to monitor the temperature inside the vehicle in real time to prevent safety hazards caused by high temperature inside the vehicle; before the vehicle is started and while driving, it enters the "dynamic" safety monitoring mode to prevent the driver from driving under the influence of alcohol, falling asleep, and rear-ending the vehicle. After this initialization detection, the processor determines that the door is closed and there is no one in the driver's seat, and enters the "static" safety monitoring mode. When the vehicle is parked, the temperature inside the vehicle is monitored in real time. If the temperature is too high, the owner is reminded in time and the temperature is actively lowered; after the initialization detection, the processor determines that the door is closed and there is someone in the driver's seat, and enters the "dynamic" safety monitoring mode. Before the vehicle is started and during driving, the driver's driving under the influence of alcohol, falling asleep, and rear-ending the vehicle are predicted and warned in time; switching between the two monitoring modes can conduct safety monitoring of the vehicle when it is parked, before starting, and while driving, so as to prevent danger from occurring, thereby effectively protecting the safety of the vehicle and the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a system block diagram of the utility model.

[0017] Figure 2 This is the system block diagram of the vehicle's "static" safety monitoring mode.

[0018] Figure 3 Flow chart of the vehicle's "static" state safety monitoring mode.

[0019] Figure 4 This is the system block diagram of the vehicle's dynamic state safety monitoring mode.

[0020] Figure 5 This is a flow chart of the vehicle's "dynamic" state safety monitoring mode.

[0021] Figure 6 Schematic diagram of the rotating table assembly.

[0022] Figure 6 In the figure, 1-servo engine; 2-support tube; 3-sensor shell; 4-gas collection port. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings.

[0024] Example 1: Figure 1-6 As shown: A vehicle safety monitoring system includes a processor, a power module, an initialization detection module, an anti-drunk driving detection module, an anti-drowsiness detection module, a temperature detection module, a button module, a cooling module and an alarm module. Among them, the processor (single-chip microcomputer STM32) controls whether each module is working, receives and processes the information of each detection module, and couples the power supply of the engine ignition device.

[0025] The key module is equipped with a menu key, an increment adjustment key, a decrement adjustment key and a communication pause key, and the key module is set on the operating table. The menu key can switch the upper and lower temperature limits, pressure and the safety distance of the vehicle in all directions, and the adjustment key can adjust the above safety thresholds, which conforms to the humanized design. The communication pause key only works in the safety measurement and control mode when the vehicle is parked.

[0026] The alarm module includes a voice reminder unit (DS18B20), a display unit (OLED screen), a vibration alarm unit (button vibration motor), a wireless communication unit (GSM communication module WF-SIM800A) and a GPS positioning unit (GPS-NEO-6M module), all of which are installed on the operating table.

[0027] At each working stage, the OLED display screen of the alarm module normally displays the detection value of the current working status. When the parameters of each detection module are abnormal, the alarm module can perform voice broadcast, parameter display and vibration alarm, and can send reminder information and vehicle location information to the owner or emergency contact; the prompt content of the voice reminder unit (DS18B20) and the OLED display screen is consistent with the monitored object in the current working stage.

[0028] In this implementation case, the door magnet of the vehicle alarm is used as the door sensor and is coupled with the processor. The initialization detection module is composed of only an infrared sensor (HC-SR501); the processor (single-chip microcomputer STM32) is coupled with the vehicle's electric window controller.

[0029] The processor (STM32 microcontroller) directly reads the door magnet signal of the vehicle alarm and determines that the driver's door is closed. The human infrared sensor (HC-SR501) detects the infrared waves on the driver's seat, and the processor (STM32 microcontroller) determines whether there is someone in the driver's seat. After that, the processor (STM32 microcontroller) terminates the initialization detection module until the driver's door is closed again and then starts again.

[0030] When the initialization detection result determines that there is no one in the driver's seat, the system enters the vehicle "static" safety monitoring mode. The temperature detection module works to measure and control the temperature inside the vehicle. Figure 2 and Figure 3 shown.

[0031] The temperature sensor (DS18B20) detects the temperature inside the car and transmits the temperature signal to the processor (STM32 microcontroller). The display unit of the alarm module displays the temperature inside the car in real time.

[0032] When the processor (STM32 microcontroller) determines that the temperature inside the car is higher than the upper temperature limit of 50°C, the wireless communication unit (GSM communication module WF-SIM800A) is activated to send a text message to the owner to remind him that the temperature inside the car is too high, and the OLED display flashes to display the current temperature value inside the car. At the same time, the window controller lowers the window 20mm and the fan turns.

[0033] Before the car owner arrives in the car, the wireless communication unit (GSM communication module WF-SIM800A) sends a text message every 5 minutes. After the car owner arrives in the car, he presses the communication pause button, and the wireless communication unit (GSM communication module WF-SIM800A) stops sending text messages and resumes normal after 30 minutes.

[0034] When the processor (STM32 microcontroller) determines that the temperature inside the car is lower than the lower limit of 30°C, the wireless communication unit (GSM communication module WF-SIM800A) stops sending text messages, and the OLED display normally displays the temperature inside the car. At the same time, the window controller raises the window and the fan stops rotating.

[0035] Example 2: In this example, when the initialization detection result determines that there is someone in the driver's seat, the vehicle enters the "dynamic" safety monitoring mode. The anti-drunk driving detection module and the anti-drowsiness detection module work to monitor whether the driver is drunk driving or drowsy, as well as the distance between the vehicle and surrounding obstacles. Figure 4 and Figure 5 shown.

[0036] The anti-drunk driving detection module includes an alcohol sensor (MQ3) and a rotating frame ( Figure 6 shown).

[0037] Rotating stand( Figure 6 The sensor housing 3 is composed of a steering gear 1, a support tube 2 and a sensor housing 3. The steering gear 1 is installed on the roof above the driver's seat in the car. The support tube 2 is threadedly connected to the output shaft of the steering gear 1, and the sensor housing 3 is threadedly connected to the support tube (2). The alcohol sensor (MQ3) and the airflow sensing switch are encapsulated in the sensor housing 3, and a gas collection port 4 is provided on the surface of the sensor housing. The alcohol sensor (MQ3) is directly opposite to the gas collection port 4, and the airflow sensing switch is arranged on the inner wall of the collection port 4.

[0038] After the processor (STM32 microcontroller) determines that there is someone in the driver's seat, the servo 1 drives the support tube 2 and the sensor shell 3 to rotate clockwise, and the gas collection port 4 can reach the driver's mouth. After the airflow sensing switch detects the change in airflow, the alcohol concentration value measured by the alcohol sensor (MQ3) is valid. At the same time, the processor (STM32 microcontroller) determines that the driver has completed the blowing action, and controls the servo 1 to drive the support tube 2 and the sensor shell 3 to rotate counterclockwise.

[0039] When the processor (STM32 microcontroller) determines that the alcohol concentration exceeds the safety threshold, the alarm module broadcasts "The driver is driving under the influence of alcohol" and cuts off the power supply of the engine ignition device. The OLED display flashes to display the current detected alcohol concentration value, and the wireless communication unit (GSM communication module WF-SIM800A) sends a text message "The driver is driving under the influence of alcohol" to the emergency contact. After that, the safety monitoring of the vehicle ends.

[0040] When the processor (STM32 microcontroller) determines that the alcohol concentration does not exceed the safety threshold, the OLED display normally displays the alcohol concentration value of the gas, and the voice prompt "It is safe to travel" is given. The anti-drunk driving detection module stops working, and the anti-drowsiness detection module starts working.

[0041] The anti-drowsiness detection module includes a face recognition unit, a pressure measurement unit and a distance measurement unit.

[0042] The face recognition unit (DW620) monitors the degree of opening and closing of the driver's eyes and mouth, and transmits it to the processor (single-chip microcomputer STM32). When the processor (single-chip microcomputer STM32) determines that the driver "closes his eyes" or "yawns", the processor (single-chip microcomputer STM32) activates the alarm module to give a voice reminder "The driver is drowsy", sends a vibration reminder, and the wireless communication unit (GSM communication module WF-SIM800A) sends the "driver is drowsy" information to the emergency contact, and the GPS positioning unit (GPS-NEO-6M module) sends the vehicle's current location information to the emergency contact.

[0043] The pressure measuring unit is composed of a plurality of thin film flexible pressure sensors and is arranged in the vehicle-mounted neck pillow.

[0044] The pressure measurement unit measures the pressure on the neck pillow when the driver's head tilts to the left or right, and transmits it to the processor (STM32 microcontroller). The OLED display shows the pressure value of each measuring point.

[0045] When the processor (STM32 microcontroller) determines that the pressure value at a certain measuring point is higher than the preset pressure threshold, the alarm module will give a voice reminder "The driver is drowsy", vibrate to remind, the OLED display will flash to display the abnormal pressure value, the wireless communication unit will send the "Driver is drowsy" message to the emergency contact, and the GPS positioning unit (GPS-NEO-6M module) will send the vehicle's current location information to the emergency contact.

[0046] The ranging unit consists of multiple ultrasonic sensors (HC-SR04) that measure the distance to obstacles in front of the vehicle, on the left front side, on the left rear side, on the right front side, on the right rear side, and directly behind the vehicle, and transmits it to the processor (MCU STM32).

[0047] When no obstacle is detected, the OLED display screen displays "∞"; when an obstacle is detected, the OLED display screen displays the distance value in all directions in real time; when the distance between a vehicle and an obstacle in a certain direction is detected to be lower than the preset safety distance, a voice reminder "Pay attention to the distance in this direction" is issued, a vibration reminder is issued, and the OLED display unit flashes to display the distance in this direction.

[0048] The key module in the present invention is provided with a menu key, an increment adjustment key, a decrement adjustment key and a communication pause key, and the key module is arranged on the operating table. The menu key can switch the upper temperature limit, the lower temperature limit, the upper pressure limit and the lower distance limit of each direction of the vehicle, and the adjustment key can adjust the above safety thresholds, which conforms to the humanized design. The communication pause key only works in the vehicle parking state safety monitoring mode. After pressing the key, the information sending to the owner can be suspended and resumed after 30 minutes.

[0049] The alarm module includes a voice reminder unit, a display unit, a vibration alarm unit, a wireless communication unit and a GPS positioning unit, all of which are installed on the operating table. At each working stage, the display unit displays the value of the current detected object in real time. When any detected parameter is abnormal, the alarm module starts to alarm. 0026. When the processor determines that the distance between any measured vehicle and an obstacle is lower than the safe distance, a vibration reminder is issued, a voice reminder "pay attention to the distance in this direction" is given, and the distance parameter of this direction is displayed abnormally (such as flashing display, changing parameter color, etc.).

[0050] The utility model adopts a mobile power supply or a vehicle-mounted power supply for power supply. When the driver stops the car and takes a rest in the car, the power supply is cut off.

[0051] The basic principles and main features of the utility model are described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A vehicle safety monitoring system, characterized in that: It includes a processor, and an initialization detection module, a temperature detection module, an anti-drunk driving detection module, an anti-drowsiness detection module, an alarm module, a button module and a power module electrically connected to the processor; The processor controls whether each module is started, receives and processes information from each detection module, and is coupled to the power supply of the engine ignition device.

2. The vehicle safety monitoring system according to claim 1, characterized in that: The initialization detection module is composed of a door sensor and an infrared sensor. The infrared sensor is installed on the roof above the driver's seat, and the door sensor is arranged in the door frame.

3. The vehicle safety monitoring system according to claim 1, characterized in that: The temperature detection module includes a temperature sensor, a window controller and a refrigeration device.

4. The vehicle safety monitoring system according to claim 1, characterized in that: The anti-drunk driving detection module includes an alcohol sensor and a rotating frame. The rotating frame includes a steering gear, a support tube and a sensor shell. The steering gear is installed on the roof above the driver's seat in the car. The support tube is threadedly connected to the steering gear output shaft. The sensor shell is threadedly connected to the support tube. The sensor shell encapsulates an alcohol sensor and an airflow sensing switch. A gas collection port is left on the surface of the sensor shell. The alcohol sensor is installed opposite to the gas collection port, and the airflow sensing switch is arranged on the inner wall of the collection port.

5. The vehicle safety monitoring system according to claim 1, characterized in that: The anti-drowsiness detection module includes a face recognition module, a thin film flexible pressure sensor and an ultrasonic ranging sensor. The face recognition module is installed on the front windshield to detect the degree of opening and closing of the driver's eyes and mouth; multiple thin film flexible pressure sensors are arranged in the vehicle-mounted neck pillow, which are distributed to detect the pressure on the neck pillow when the driver dozes off and causes the head to tilt to the left or right. The ultrasonic ranging sensors are respectively installed in the front, left front side, left rear side, right front side, right rear side and rear of the vehicle body to measure the distance between the vehicle and obstacles in all directions.

6. The vehicle safety monitoring system according to claim 1, characterized in that: The processor is a single chip microcomputer STM32.

7. The vehicle safety monitoring system according to claim 2, characterized in that: The door sensor is a door magnet, and the infrared sensor model is HC-SR501.

8. The vehicle safety monitoring system according to claim 3, characterized in that: The temperature sensor model is DS18B20.

9. The vehicle safety monitoring system according to claim 4, characterized in that: The model of the alcohol sensor is MQ3.

10. The vehicle safety monitoring system according to claim 5, characterized in that: The face recognition module model is DW620. The ultrasonic distance sensor model is HC-SR04.

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