CN204250010U - Based on the overturning autoalarm of CAN and EHB - Google Patents

Abstract

The utility model discloses an automatic alarm device for rollover based on a CAN bus and an electronic hydraulic braking system. The device includes a microprocessor, a vehicle-mounted gyroscope for obtaining the inclination angle and acceleration of the vehicle in various directions, a GPS positioning device for locating the position of the vehicle, and sending an alarm signal to the public security system according to the alarm signal sent by the microprocessor. The GSM module of the alarm message, the alarm used for alarming according to the alarm signal sent by the microprocessor, and the brake control valve in the electronic hydraulic brake system used for braking according to the brake signal sent by the microprocessor. The device can automatically obtain the inclination angle and acceleration of the vehicle in various directions, judge whether the vehicle runs out of the road or rolls over, and automatically sends an alarm signal to the outside world.

Description

Rollover automatic alarm device based on CAN bus and electronic hydraulic brake system

technical field

The utility model belongs to the field of motor vehicle safety, in particular to a rollover automatic alarm device based on a CAN bus and an electronic hydraulic braking system.

Background technique

In recent years, my country's road traffic accidents have occurred frequently, not only causing significant economic losses, but also causing a large number of casualties. Among them, because the roads in mountainous and hilly areas are mostly built near the mountains, and the roads are narrow and the turns are sharp, similar accidents often occur that vehicles (especially large tourist buses) rush out of the road and fall into valleys or rivers. There are many passengers in the passenger car, so every accident will cause a large number of casualties, and even dozens of people will die in one accident. In addition, due to the small number of people in mountainous areas and weak mobile phone signals, after the accident, the alarm time may be delayed due to not being detected in time or there is no mobile signal, so that timely rescue cannot be performed, which will further increase the number of casualties.

In view of this situation, there are some alarm systems now, but the alarm systems are too simple, and the starting conditions of the alarm systems are too single to meet the practical requirements, so the improvement of the alarm system has very great practical significance.

Utility model content

The purpose of this utility model is to provide an automatic alarm device for vehicle rollover based on CAN bus and electronic hydraulic braking system. And automatically send an alarm signal to the outside world.

In order to achieve the above-mentioned technical purpose, the utility model adopts the following technical solutions to realize.

The rollover automatic alarm device based on CAN bus and electronic hydraulic braking system is characterized in that it includes a microprocessor, a vehicle-mounted gyroscope for obtaining the inclination angle and acceleration of the vehicle in various directions, and a GPS for locating the position of the vehicle Positioning device, GSM module for sending alarm message to the public security system according to the alarm signal sent by the microprocessor, alarm device for alarming according to the alarm signal sent by the microprocessor, used for braking signal according to the microprocessor Brake control valves in electro-hydraulic brake systems for braking;

The output end of the vehicle-mounted gyroscope and the output end of the GPS positioning device are correspondingly electrically connected to two I/O input ends of the microprocessor, and the input end of the alarm and the input end of the GSM module are correspondingly electrically connected to the microprocessor. Two I/O output terminals; the control terminal of the brake control valve in the electronic hydraulic braking system is electrically connected to the I/O output terminal of the microprocessor through the CAN bus.

The characteristics and further improvement of this technical solution are:

The vehicle-mounted gyroscope is installed at the center of mass of the vehicle; the GPS positioning device is installed on the roof of the vehicle; there are two alarms, one of which is installed on the front roof of the vehicle, and the other is installed on the Under the rear of the car.

The vehicle-mounted gyroscope is an IMU02 gyroscope.

The GPS positioning device is a VBOX3I GPS positioning device.

The alarm is LTE-1101 sound and light alarm.

The vehicle rollover automatic alarm device based on the CAN bus and the electronic hydraulic braking system of the utility model collects the position signal of the vehicle in real time through the GPS positioning device, and the inclination and acceleration signals of the vehicle in various directions are collected in real time by the vehicle-mounted gyroscope. When the inclination angle and acceleration in a certain direction reach the preset value, the microprocessor judges that the car has rushed out of the lane or overturned, and then sends the danger signal to the alarm, and at the same time sends the danger signal to the GSM module. The alarm sends out sound and light signals to inform nearby or passing people of traffic accidents; at the same time, it sends accident signals and GPS location information to the public security system through the GSM module to notify the public security system of the specific location of the accident, so that the dangerous vehicle can be found Rescue in time; at the same time, the microprocessor sends a braking signal to the electronic hydraulic braking system through the CAN bus, and the braking control valve in the electronic hydraulic braking system receives the braking signal, the valve opens, and the brake brakes.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

Fig. 1 is the electrical connection schematic diagram of a kind of automatic alarm device for rollover based on CAN bus and electronic hydraulic braking system of the present utility model;

Fig. 2 is the schematic diagram of the work flow of the automatic rollover alarm device based on the CAN bus and the electronic hydraulic braking system of the utility model;

Fig. 3 is the schematic diagram of the inclination angle of the vehicle in the utility model;

Detailed ways

Referring to Fig. 1, it is a schematic diagram of the electrical connection of a vehicle rollover automatic alarm device based on the CAN bus and the electronic hydraulic braking system of the present utility model; The vehicle-mounted gyroscope, the GPS positioning device for locating the position of the vehicle, the GSM module for sending alarm messages to the public security system according to the alarm signal sent by the microprocessor, and the alarm for alarming according to the alarm signal sent by the microprocessor The device is used for the brake control valve in the electro-hydraulic brake system that brakes according to the brake signal sent by the microprocessor;

The output end of the vehicle-mounted gyroscope and the output end of the GPS positioning device correspond to two I/O input ends electrically connected to the microprocessor, and the input end of the alarm and the input end of the GSM module correspond to two I/O inputs electrically connected to the microprocessor. O output terminal; the control terminal of the brake control valve in the electronic hydraulic braking system is electrically connected to the I/O output terminal of the microprocessor through the CAN bus.

Among them, the on-board gyroscope is installed at the center of mass of the car; the GPS positioning device is installed on the roof of the car; there are two alarms, one of which is installed on the front roof of the car, and the other is installed on the rear of the car. end.

Among them, the on-board gyroscope is the IMU02 gyroscope.

Among them, the GPS positioning device is a VBOX3I GPS positioning device.

Among them, the alarm is LTE-1101 sound and light alarm.

Referring to Figure 2, it is a schematic diagram of the work flow of the automatic rollover alarm device based on the CAN bus and the electronic hydraulic braking system of the present utility model; the following two situations will mainly occur in the device during the working process:

(1) The inclination angle of the vehicle is greater than the set value

The inclination angle θ of the vehicle in a certain direction refers to the angle between the vertical line of the floor of the vehicle and the vertical line of the ground plane, as shown in Figure 3. Since roads are generally built near mountains, the side of the road is generally steep. If the car rushes out of the lane, the inclination angle of the car will be much greater than the slope specified by the road regulations (the maximum slope specified by the fourth-class road is about 9%, about 5.14 Spend). When the detected vehicle inclination angle θ>30 degrees or θ appears θ>30 at a certain moment and continues to change (such as the car rolls over), it is judged that the car has rushed out of the lane or rolled over. At this time, the processor will report to the alarm and The GSM module sends an indication signal, the alarm sends out an audible and visual signal, and the GSM sends an alarm message to the public security system, including the GPS position information of the vehicle.

(2) The car accelerates down the slope

If it is detected that the inclination angle θ>15 degrees in a certain direction is accompanied by the acceleration a of the vehicle in a certain direction continuously greater than 0m/s ² , it may be that the vehicle has rushed out of the lane and accelerated down the hill. The processor identifies two situations and sends instructions to the alarm, GSM module and braking system. The alarm sends out sound and light signals, and GSM sends an alarm message to the public security system, including the GPS position signal of the vehicle. At the same time, the microprocessor passes CAN bus Send a brake signal to the electronic hydraulic brake system, the brake control valve in the electronic hydraulic brake system receives the brake signal, the valve opens, and the brake brakes to slow down the speed of the vehicle.

The vehicle rollover automatic alarm device based on the CAN bus and the electronic hydraulic braking system of the utility model collects the position signal of the vehicle in real time through the GPS positioning device, and the inclination and acceleration signals of the vehicle in various directions are collected in real time by the vehicle-mounted gyroscope. When the inclination angle and acceleration in a certain direction reach the preset value, the microprocessor judges that the car has rushed out of the lane or overturned, and then sends the danger signal to the alarm, and at the same time sends the danger signal to the GSM module. The alarm sends out sound and light signals to inform nearby or passing people of traffic accidents; at the same time, it sends accident signals and GPS location information to the public security system through the GSM module to notify the public security system of the specific location of the accident, so that the dangerous vehicle can be found Rescue in time; at the same time, the microprocessor sends a braking signal to the electronic hydraulic braking system through the CAN bus. The braking control valve in the electronic hydraulic braking system receives the braking signal, the valve opens, and the brake brakes to slow down the driving speed. Prevent high-speed collisions.

Although the embodiments of the present utility model have been described above in conjunction with the accompanying drawings, the present utility model is not limited to the above-mentioned specific embodiments and application fields, and the above-mentioned specific embodiments are only illustrative, instructive, and not limiting sexual. Under the enlightenment of the description, those skilled in the art can also make many forms without departing from the protection scope of the claims of the present invention, and these all belong to the protection of the present invention.

Claims (5)

1. based on the overturning autoalarm of CAN and EHB, it is characterized in that, comprise microprocessor, for obtaining this car inclination angle in all directions and the vehicle-mounted gyroscope of acceleration/accel, for locating the GPS registration device of this truck position, send the gsm module of alarming short message to public security system for the alerting signal that sends according to microprocessor, alerting signal for sending according to microprocessor carries out the annunciator of reporting to the police, and the speed-slackening signal for sending according to microprocessor carries out the brake control valve in the EHB braked;

Two I/O input ends of the mouth correspondence electrical connection microprocessor of described vehicle-mounted gyrostatic mouth and GPS registration device, two I/O mouths of the input end of described annunciator and the input end correspondence electrical connection microprocessor of gsm module; The control end of the brake control valve in described EHB is by CAN electrical connection microprocessor I/O mouth.

2. the overturning autoalarm based on CAN and EHB according to claim 1, it is characterized in that, described vehicle-mounted gyroscope is arranged on the centroid position of this car; Described GPS registration device is arranged on the roof of this car; Described annunciator is two, and one of them is arranged on the anterior roof of this car, and another is arranged at the bottom of the car of this car rear portion.

3. the overturning autoalarm based on CAN and EHB according to claim 1, it is characterized in that, described vehicle-mounted gyroscope is IMU02 gyroscope.

4. the overturning autoalarm based on CAN and EHB according to claim 1, it is characterized in that, described GPS registration device is VBOX3I type GPS registration device.

5. the overturning autoalarm based on CAN and EHB according to claim 1, it is characterized in that, described annunciator is LTE-1101 combined aural and visual alarm.