CN102616236A - Night-meeting safety control system - Google Patents

Abstract

The night meeting safety control system of the present invention relates to a car driving safety control device. The system includes a night driving safety detection device, a processing device and an execution device. The detection device and the execution device are respectively connected to the processing device through a circuit or a bus. The detection device includes night driving switch, light intensity sensor, distance detection sensor, steering wheel angle sensor, vehicle speed sensor, engine speed sensor, throttle position sensor, lateral acceleration sensor, yaw rate sensor, after detection, the signal is transmitted to the processing through the circuit After the signal processing is completed, the processing device sends instructions to the execution device through the bus, and the execution device makes corresponding execution actions to change the vehicle's speed, speed, direction, etc., so that the vehicle is on a safe track. It can effectively avoid potential traffic safety hazards caused by the driver's inability to recognize the distance between cars and the road conditions when meeting cars at night.

Description

Safety control system for meeting cars at night

technical field

The invention relates to an active safety control system for vehicles, in particular to a safety control system for meeting vehicles at night which avoids collision risks during meeting vehicles at night.

Background technique

According to the latest statistics released by the German Federal Statistical Office, more than 40% of all traffic accidents that lead to deaths occur at night, although the number of cars driving on the road at night is 80% less than that during the day. Such a result is not surprising. Scientific research has proved that 90% of the information about traffic conditions obtained by drivers while driving depends on the visual organs, and at night due to reduced visibility, the visual function of the eyes will be reduced to 4%. . If you do not turn off the high beams when driving at night, the strong light stimulation caused by both drivers will easily cause traffic accidents. In response to this technical problem, there are currently some research results, such as anti-glare glasses, automatic control devices for near and far beams, etc., but these research results can only partially solve the problem of glare, and cannot greatly reduce the traffic caused by driving at night. ACCIDENT.

Contents of the invention

The object of the present invention is to provide a night meeting safety control system that can effectively avoid potential traffic safety hazards caused by the driver's inability to recognize the distance between cars and the road surface conditions when meeting cars at night.

The technical scheme adopted by the present invention to achieve the above object is: a safety control system for meeting cars at night, the system includes a detection device, a processing device and an execution device, and the detection device includes: a night driving switch for controlling the work of the system. The light intensity sensor used to detect the driver's eyes, the distance sensor used to detect the relative position of the oncoming vehicle when meeting a car, the engine speed sensor, vehicle speed sensor, throttle position sensor, and lateral acceleration sensor used to detect vehicle dynamics , a yaw rate sensor, a steering wheel angle sensor used to detect the steering wheel angle; the processing device includes: a central processing unit of a night meeting safety system for issuing instructions, an electronically controlled braking system ECU for controlling vehicle speed, for The power steering system ECU that controls the steering, the engine ECU used to control the work of the engine actuator; The electronic power steering system of the steering command is used to execute the brake actuator of the vehicle speed command; the central processing unit of the night meeting safety system is respectively connected with the engine ECU, the electronic control braking system ECU, and the power steering system ECU through the bus. The nighttime driving switch, light intensity sensor and distance sensor are respectively connected to the input ends of the central processor of the night meeting safety system; , the engine speed sensor, vehicle speed sensor, and throttle position sensor are respectively connected to the input ends of the engine ECU, and the lateral acceleration sensor, yaw rate sensor, and steering wheel angle sensor are respectively connected to the input ends of the electronically controlled braking system ECU , the output end of the electronically controlled braking system ECU is connected to the control end of the brake actuator, and the output end of the power steering system ECU is connected to the control end of the electronic power steering system. the

Wherein the light intensity sensor is arranged on the windshield directly in front of the driving seat, and there are multiple light intensity sensors, and the multiple light intensity sensors are scattered and arranged on the windshield directly in front of the driving seat.

Wherein the distance sensor is arranged on the left and right sides of the front end of the vehicle.

Wherein the night driving switch is arranged on one side of the instrument panel in the cab.

Wherein the working indicator light is arranged on the instrument panel in the cab.

Due to the adoption of the above structure, the safety control system for meeting vehicles at night of the present invention has the following beneficial effects:

1. It can effectively avoid traffic safety hazards caused by the driver's inability to recognize the distance between cars and the road conditions when meeting cars at night

When the night driving switch is in the open position and the headlight switch signal is received, the central processing unit (hereinafter referred to as the "central processor") of the night traffic safety system determines that it is in the night driving mode, and the night traffic safety control system of the present invention is activated, and the light The intensity sensor detects the intensity of light entering the driver's eyes at all times. When the intensity of light reaches the set value, the central processor controls the far and near beam switching relay to work, and switches the far and near beam. The distance sensor transmits the collected signal to the central processor. At the same time, the engine speed sensor, vehicle speed sensor, and throttle position sensor transmit the collected signals to the engine ECU, and the lateral acceleration sensor, yaw rate sensor, and steering wheel angle sensor transmit the collected signals to the electronically controlled braking system ECU. The engine ECU and the electronically controlled braking system ECU then transmit the data to the central processing unit, and the central processing unit will make a judgment on the trajectory of the vehicle. The ECU of the dynamic system and the ECU of the power steering system issue instructions, and then the engine ECU, the ECU of the electronically controlled braking system, and the ECU of the power steering system respectively control the engine actuator, brake actuator, and electronic power steering system to change the speed, speed, and direction of the vehicle. , so that the vehicle can run on a safe track, which can effectively avoid potential traffic safety hazards caused by the driver's inability to recognize the distance between cars and the road conditions when meeting cars at night.

2. Strong versatility

Adopting the night meeting safety control system of the present invention does not need to change the circuit of the original car, and the above-mentioned device can be shared with the original car in a car equipped with an electronically controlled braking system ECU, a power steering system ECU, an electronic power steering system, and a brake actuator. Therefore, it can be used for the control of new cars, and can also be used for the transformation of old cars, and has a wide range of applications.

The safety control system for meeting cars at night of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a structural schematic diagram of the safety control system for meeting cars at night of the present invention;

Fig. 2 is a working flow diagram of the safety control system for passing cars at night according to the present invention.

Detailed ways

As shown in FIG. 1 , the night meeting safety control system of the present invention includes a detection device 1 , a processing device 2 and an execution device 3 .

The detection device 1 includes: a night driving switch for controlling the operation of the system, a light intensity sensor for detecting the driver's eyes, a distance sensor for detecting the relative position of the vehicle on the opposite side when meeting vehicles, and a sensor for detecting the relative position of the vehicle. Dynamic engine speed sensor, vehicle speed sensor, throttle position sensor, lateral acceleration sensor, yaw rate sensor, steering wheel angle sensor for detecting steering wheel angle. The detection device 1 of course also includes a headlight switch. The night driving switch is set on the side of the dashboard in the cab, which is convenient for the driver to operate. It is a key component for the system to work or not. The driver can directly control the work of the night traffic safety control system through this switch. The light intensity sensor is mainly used to distinguish the dazzling moment. The light intensity sensor is set on the windshield directly in front of the driver's seat. Due to the different heights of passing vehicles and the different heights of the drivers, there are multiple light intensity sensors, and A plurality of light intensity sensors are dispersedly arranged on the windshield directly in front of the driver's seat. In this embodiment, five light intensity sensors are arranged, and the five light intensity sensors are evenly arranged on the windshield. The number is not limited to five, and the number of light intensity sensors can be appropriately increased or decreased according to different vehicle models. The distance sensors are arranged on the left and right sides of the front end of the vehicle.

The processing device 2 includes: a central processing unit (hereinafter referred to as the "central processing unit") of the night meeting safety system for issuing instructions, an electronically controlled braking system ECU for controlling vehicle speed, and a power steering system for controlling steering. ECU, the engine ECU used to control the work of the engine actuators, the engine actuators are the engine and the devices that work with the engine. ECU (Electronic Control Unit) is an electronic control unit.

The execution device 3 includes: a far and near light switching relay for automatically switching the far and near light, a working indicator light for indicating the system to work, an electronic power steering system (including steering motor and accessories) for executing steering commands, and for executing Brake actuator for vehicle speed command (including oil pump motor and solenoid valve).

The central processing unit is respectively connected with the engine ECU, the electronic control braking system ECU, and the power steering system ECU through the bus, and the central processing unit performs information transmission with the engine ECU, the electronic control braking system ECU, and the power steering system ECU through the bus. The night driving switch, the light intensity sensor, the headlight switch and the distance sensor are respectively connected with the input end of the central processing unit through a circuit or a bus. The far and near light switching relay and the working indicator light are respectively connected to the output end of the central processing unit through a circuit or a bus. The external input interface of the central processor is connected to the signal output interface of the headlight switch. The signal of the headlight switch is used to judge whether it is driving at night. The relay output interface is connected with the original car far and low beam switching switch through a circuit. The engine speed sensor, vehicle speed sensor, and throttle position sensor are respectively connected to the input end of the engine ECU through a circuit or a bus, and the lateral acceleration sensor, yaw rate sensor, and steering wheel angle sensor are respectively connected to an electronic control system through a circuit or a bus. The output end of the electronically controlled braking system ECU is connected to the control end of the brake actuator through a circuit or bus, and the output end of the power steering system ECU is connected to the electronic power steering system through a circuit or bus. Console connection. the

If the original car has electronically controlled braking system ECU, power steering system ECU, engine speed sensor, vehicle speed sensor, throttle position sensor, lateral acceleration sensor, yaw rate sensor, steering wheel angle sensor, electronic power steering system, brake execution device, or any device therein, the safety control system for meeting cars at night of the present invention shares the above-mentioned devices with the original car.

When in use, the night meeting safety control system of the present invention is connected with the main vehicle circuit, and communicates with other control systems through the bus. Its working process is shown in Figure 2. When the system detects the headlight switch signal, it turns on automatically. When the headlight switch is not detected or the driver does not want to use the system, the system turns off by itself. When the night driving switch is in the open position and receives the headlight switch signal, the central processing unit will determine that it is in the night driving mode, and the night traffic safety control system will be activated; At the dazzling moment, when the intensity (the intensity of the headlights of the oncoming car shining on the windshield) reaches the set value (can be set by software), the central processing unit controls the far and near beam switching relay to work, and the far and near beam switching relay controls the far and near beam The light is switched to switch the high and low beams. The distance sensor transmits the collected signals to the central processing unit. At the same time, the engine speed sensor, vehicle speed sensor, and throttle position sensor transmit the collected signals to the engine ECU. The lateral acceleration sensor, The yaw rate sensor and the steering wheel angle sensor transmit the collected signals to the electronically controlled braking system ECU, the engine ECU and the electronically controlled braking system ECU then transmit the data to the central processing unit, and the central processing unit will make the trajectory of the vehicle If there is a safety problem in the expected trajectory, (specific judgment and safety problem settings can be set through software) the central processing unit sends instructions to the engine ECU, electronically controlled braking system ECU, power steering system ECU, and then the engine ECU , electronically controlled braking system ECU, and power steering system ECU respectively control the engine actuator, brake actuator, and electronic power steering system. The engine ECU will issue instructions to adjust the ignition timing, throttle opening, and fuel injection volume to control the engine. Torque, the electronically controlled braking system ECU will issue instructions to the solenoid valve and oil pump motor to control the vehicle speed, and the power steering system ECU will issue instructions to the steering motor to control the direction of movement of the vehicle. By changing the speed, speed, and direction of the vehicle, the vehicle can be driven on a safe track, which can effectively avoid potential traffic safety hazards caused by the driver's inability to recognize the distance between cars and the road conditions when meeting cars at night. The working indicator light is flashing when correcting the vehicle track.

The night meeting safety control system of the present invention must be based on the electronic brake control system (minimum ABS), and it is best to have an electronic power steering system. If not, you can only install an electronic power steering instead. Electronic power steering system.

Claims (5)

1. a nighttime meeting safety control system is characterized in that, this system comprises detecting device, processing equipment and executive device,

Said detecting device comprises: the night travel switch that is used for control system work; Be used to detect the Illumination intensity sensor of irradiation chaufeur eye; The send a car pitch sensors of relative position of when being used to detect meeting and opposite; Be used to detect the dynamic engine speed sensor of vehicle, car speed sensor, throttle position sensor, lateral acceleration sensor, yaw-rate sensor, be used to detect the steering wheel angle sensor of steering wheel angle;

Said processing equipment comprises: the nighttime meeting security system central processor that is used to send instruction; Be used to control the electrically controlled brake system ECU of the speed of a motor vehicle; Be used to control the power steering system ECU that turns to, be used to control the Engine ECU of driving engine executive device work;

Said executive device comprises: the far and near light transfer relay of the far and near light that is used to automatically switch, be used to indicate the relay indicating light of system works, and be used to carry out the electronic power assist steering system of steering order, be used to carry out the brake actuator of speed of a motor vehicle instruction;

Said nighttime meeting security system central processor is connected with Engine ECU, electrically controlled brake system ECU, power steering system ECU respectively through bus; Said night travel switch, Illumination intensity sensor, pitch sensors are connected with the input end of nighttime meeting security system central processor respectively; Said far and near light transfer relay, relay indicating light are connected with the mouth of nighttime meeting security system central processor respectively; Said engine speed sensor, car speed sensor, throttle position sensor are connected with the input end of Engine ECU respectively; Said lateral acceleration sensor, yaw-rate sensor, steering wheel angle sensor are connected with the input end of electrically controlled brake system ECU respectively; The mouth of electrically controlled brake system ECU is connected with the control end of brake actuator, and the mouth of said power steering system ECU is connected with the control end of electronic power assist steering system.

2. nighttime meeting safety control system as claimed in claim 1; It is characterized in that; Said Illumination intensity sensor is arranged on the Windshield in operator seat dead ahead; The Illumination intensity sensor is provided with a plurality of, and a plurality of Illumination intensity sensor dispersed placement is on the Windshield in operator seat dead ahead.

3. nighttime meeting safety control system as claimed in claim 1 is characterized in that said pitch sensors is arranged on the left and right sides of vehicle front.

4. nighttime meeting safety control system as claimed in claim 1 is characterized in that, said night travel switch is arranged on gauge panel one side in the operator's compartment.

5. nighttime meeting safety control system as claimed in claim 1 is characterized in that, said relay indicating light is arranged on the interior gauge panel of operator's compartment.

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