CN203391717U - A vehicle collision avoidance warning device based on MSP430 microcontroller - Google Patents

Abstract

The utility model relates to a car anticollision early warning device based on MSP430 singlechip relates to the safety assistance field of daily car, by microwave radar speed measuring and ranging module, control module, brake module, fuel cut off module, alarm module and display and constitute, microwave radar speed measuring and ranging module, brake module, fuel cut off module, alarm module and display respectively with control module connects, control module adopt the MSP430 series singlechip that is the main performance with the ultralow consumption, the utility model discloses can automatic measure this car and the relative speed and the distance of the place ahead vehicle to divide into 2 early warning ranks and send control command to the vehicle, with suggestion driver control vehicle distance to and the initiative control vehicle slows down and traveles, thereby avoid this car and place ahead target vehicle or barrier to produce the collision, can effectively improve the security of driving.

Description

A vehicle collision avoidance warning device based on MSP430 microcontroller

technical field

The utility model relates to the field of safety assistance for daily vehicles, in particular to a vehicle anti-collision warning device based on an MSP430 single-chip microcomputer.

Background technique

With the development of society, cars have gradually become one of the main means of transportation for people to travel. With the increase in the number of private cars, the incidence of traffic accidents has also increased. , especially expressway car rear-end collision accidents are the most frequent type. The analysis of the causes of some traffic accidents shows that the key to preventing rear-end collisions is to maintain an appropriate distance between vehicles according to the relative speed of the vehicle and to reserve enough braking distance.

The Chinese invention patent published on March 30, 2011 with the publication number 101992729A discloses a vehicle distance sensor, which uses an infrared distance measuring sensor, a controller and an alarm module. The infrared distance measuring sensors are respectively arranged at the front and rear of the car body The two sides of the terminal are connected with the controller through wireless signals, so that people can know the distance of the vehicle ahead or the situation of obstacles during driving. The disadvantage of this solution is that the infrared sensor has a short measurement distance and is greatly affected by the environment, so the reliability of the ranging system is not high, and there is no anti-false alarm measure; in addition, the solution does not specify what kind of vehicle distance is dangerous during driving. It has little warning and reference effect to drivers; and as disclosed on June 24, 2009, the Chinese invention patent with the publication number of 101462515 discloses a new type of vehicle distance confirmation device. And the perspective principle is equipped with a width mark to measure the distance of the vehicle ahead, helping the driver to confirm the distance between vehicles. Although this scheme is simple in structure, because the driver will aim at the width mark and the vehicle in front, it will seriously disperse the driver's attention and easily cause accidents, especially when the road conditions are complicated and the vehicle is running at a high speed.

People are more and more aware that it is particularly important to use advanced technology to assist the driver to monitor and alarm the distance between vehicles in real time, assist the driver to deal with emergencies, reduce the speed of the vehicle, and prevent the occurrence of automobile collision accidents.

Utility model content

The main purpose of the utility model is to provide a car anti-collision early warning device based on MSP430 single-chip microcomputer with a long forward measurement distance and relatively accurate tracking target. It can automatically measure the relative speed and distance between the vehicle and the target vehicle ahead. The control module compares the relative speed and distance transmitted back by the microwave radar speed measuring and ranging module with the preset safety distance corresponding to different vehicle speeds, and then makes an early warning, which is divided into two early warning levels and sent to the braking module respectively. , the fuel cut-off module, the alarm module and the display send control instructions, that is, the first warning level is to control the alarm module to send a warning signal, while the display shows the relative speed and distance between the vehicle and the vehicle in front, and controls the fuel cut-off The module cuts off the fuel supply, so that the car slows down. The second warning level is to control the alarm module to send out a warning signal, while the display shows the relative speed and distance between the vehicle and the vehicle in front, and to control the braking module to perform a warning on the vehicle. Brake to avoid a collision between the vehicle and the vehicle in front.

In order to achieve the above object, the technical solution adopted by the utility model is: a car anti-collision warning device based on MSP430 single-chip microcomputer, which is composed of a microwave radar speed measurement and distance measurement module, a control module, a braking module, a fuel cutting module and an alarm module. The microwave radar speed measurement and distance measurement module, braking module, fuel oil cut-off module and alarm module are respectively connected with the control module. The control module adopts the MSP430 series single-chip microcomputer with ultra-low power consumption as the main performance. The ranging module is installed in the center of the front part of the vehicle body, which is used to obtain the relative speed and distance between the vehicle and the vehicle in front, and transmit the data to the control module, and the control module transmits the microwave radar speed measuring and ranging module Compare the relative speed and distance of the return with the preset safety distance corresponding to different vehicle speeds, and then make an early warning, and divide it into two early warning levels to send control commands to the brake module, fuel cut-off module, alarm module and display , that is, the first warning level is to control the alarm module to send a warning signal while displaying the relative speed and distance between the vehicle and the vehicle ahead, and to control the fuel cut-off module to cut off the fuel supply so that the vehicle slows down; the second The warning level is to control the alarm module to send a warning signal while displaying the relative speed and distance between the vehicle and the vehicle in front on the display, and to control the brake module to brake the vehicle so as to avoid collision between the vehicle and the vehicle in front .

Specifically, the microwave radar speed measurement and distance measurement module measures the relative speed and distance between the vehicle and the vehicle or obstacle in front, and transmits the measured data to the control module. The corresponding safety distance, the control module determines the corresponding safety distance according to the relative vehicle speed measured by the radar speed measurement and distance measurement module, and compares the actual distance measured by the microwave radar speed measurement and distance measurement module with the determined safety distance, and then Make an early warning, for example, when the measured actual distance is less than the safe distance, while the control module sends a voice warning signal to the alarm module, the display shows the relative speed and distance between the vehicle and the vehicle in front, and controls the fuel The cut-off module cuts off the fuel supply, so that the car slows down to maintain a safe distance between cars; if the voice warning signal fails to attract the driver's attention, the distance between the two cars will continue to decrease, once the distance between the two cars is close to the critical distance of collision (critical The spacing can be preset according to different vehicle body weights), while the alarm module sends out a voice alarm (such as prompting the driver to take measures to brake or avoid), the display shows the relative speed of the vehicle and the vehicle in front At this time, the control module sends an instruction to the braking module to control the braking module to brake the vehicle, so that the vehicle slows down, so as to avoid collision between the vehicle and the target vehicle or obstacle ahead.

As a preferred solution, the alarm module includes a voice chip, the voice chip is connected to the loudspeaker at the car end, the model of the voice chip is SC8035, the voice chip can be serially and segmentally controlled, and the voice chip is used for synthesis operation Prompt voice, when the actual distance between the car and the target vehicle or obstacle in front is less than the safety distance or the critical distance from the approaching collision, the control module sends an alarm signal to the alarm module, and the voice chip sends a corresponding alarm signal to the speaker on the car end. The alarm voice prompt sounds to remind the driver to control the speed of the vehicle or take measures to maintain a safe distance between vehicles.

The beneficial effects of the utility model are:

The utility model can automatically measure the relative speed and distance between the vehicle and the target vehicle ahead, and the control module compares the relative speed and distance transmitted back by the microwave radar speed measurement and distance measurement module with the safety distance corresponding to the preset different vehicle speeds. Compare, and then make an early warning, and divide it into two early warning levels to send control instructions to the brake module, fuel cut-off module, alarm module and display respectively, that is, the first early warning level is to control the alarm module to send a warning signal. The display shows the relative speed and distance between the vehicle and the vehicle in front, and controls the fuel cut-off module to cut off the fuel supply, so that the vehicle slows down; the second warning level is to control the alarm module to send a warning signal, and the display shows this The relative speed and distance between the vehicle and the vehicle in front, and the brake module is controlled to brake the vehicle, so as to avoid collision between the vehicle and the vehicle in front.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model.

The corresponding relationship between component names and reference signs in Figure 1 is:

Microwave radar speed measurement and distance measurement module 1; control module 2; alarm module 3; voice chip 30; speaker 31; fuel cut-off module 4; brake module 5; display 6.

Detailed ways

As shown in Figure 1, the structure diagram of the utility model is a kind of automobile anti-collision warning device based on MSP430 single-chip microcomputer, which consists of a microwave radar speed measuring and ranging module 1, a control module 2, a fuel cutting module 4, a braking module 5, an alarm module 3 and Composed of a display 6, the microwave radar speed measurement and distance measurement module 1, the fuel cut-off module 4, the braking module 5, the alarm module 3 and the display 6 are connected to the control module 2 respectively, and the control module 2 adopts ultra-low power The MSP430 series single-chip microcomputer whose main performance is power consumption; the microwave radar speed measurement and distance measurement module 1 is installed in the center of the front part of the vehicle body, and it is used to obtain the relative speed and distance between the vehicle and the vehicle in front, and transmit the data to the control module 2. The control module 2 compares the relative speed and distance transmitted back by the microwave radar speed measuring and ranging module 1 with the safety distance corresponding to the preset different vehicle speeds, and then makes an early warning, which is divided into two early warnings The levels send control commands to the fuel cut-off module 4, the brake module 5, the alarm module 3 and the display 6 respectively, that is, the first warning level is to control the alarm module 3 to send a warning signal, and the display 6 displays the vehicle and the vehicle in front. relative speed and distance, and control the fuel cut-off module 4 to cut off the fuel supply, so that the car slows down; the second warning level is to control the alarm module 3 to send a warning signal, and the display 6 displays the distance between the vehicle and the vehicle in front. Relative speed and distance, and control the brake module 5 to brake the vehicle, so as to avoid collision between the vehicle and the vehicle in front.

In a preferred embodiment, the microwave radar speed measurement and distance measurement module 1 is installed in the center of the front of the vehicle body, and it is used to obtain the relative speed and distance between the vehicle and the target vehicle or obstacle in front, and transmit the data to all The control module 2, the control module 2 compares the relative speed and distance transmitted back by the microwave radar speed measuring and ranging module with the safety distance corresponding to the preset different vehicle speeds, and then makes an early warning, and is divided into 2 The two warning levels send control instructions to the fuel cut-off module 4, the braking module 5, the alarm module 3 and the display 6 respectively, that is, the first warning level is to control the alarm module 3 to send a warning signal, and the display 6 displays the vehicle and The relative speed and distance of the vehicle in front, and the control of the fuel cut-off module 4 to cut off the fuel supply, so that the car slows down. The second warning level is to control the alarm module 3 to send a warning signal, and the display 6 shows the distance between the vehicle and the front. The relative speed and distance of the vehicle, and controlling the brake module 5 to brake the vehicle, so as to avoid collision between the vehicle and the vehicle in front.

Specifically, the microwave radar speed measurement and distance measurement module 1 measures the relative speed and distance between the vehicle and the front vehicle or obstacle, and transmits the measured data to the control module 2, which is preset with The safety distances corresponding to different speeds of automobiles. In this embodiment, the safety distances corresponding to different speeds are based on the provisions of the "Road Traffic Safety Law of the People's Republic of China": when a motor vehicle travels on an expressway, the speed exceeds When 100 kilometers, the safe vehicle distance is not less than 100 meters; when the vehicle speed is lower than 100 kilometers per hour, the minimum safe vehicle distance is not less than 50 meters. The measured relative vehicle speed determines the corresponding safe distance, and compares the actual distance between the vehicle measured by the radar speed measuring and ranging module 1 and the target vehicle or obstacle in front with the determined safe distance, and then makes a corresponding early warning, Further, when the actual distance is less than the safety distance, while the control module 2 sends a voice warning signal to the alarm module 3, the display 6 displays the relative speed and distance between the vehicle and the vehicle in front, and controls the fuel cut-off module 4 Cut off the fuel supply, make the car slow down, control the speed to maintain a safe distance between cars; if the voice warning signal fails to attract the driver's attention, the distance between the two cars will continue to decrease, once the distance between the two cars is close to the critical distance of collision (The critical distance can be pre-set according to different car body weights), while the alarm module 3 sends out a voice alarm (such as prompting the driver to take measures to brake or avoid), the display 6 displays the distance between the vehicle and the vehicle in front. Relative to the speed and distance, at this time, the brake module 5 brakes the vehicle, so as to avoid collision between the vehicle and the vehicle in front.

As a preferred solution, the alarm module 3 includes a voice chip 30, the voice chip 30 is connected to the loudspeaker 31 of the car end, the model of the voice chip 30 is SC8035, and the voice chip 30 can be serially and segmentally controlled. The voice chip 30 is used for synthesizing operation prompting voices. When the actual distance between the vehicle and the target vehicle or obstacle in front is less than the safety distance or when the critical distance from the impending collision, the control module 2 sends an alarm signal to the alarm module 3, and the The voice chip 30 sends a corresponding alarm voice prompt to the speaker 31 of the car to remind the driver to control the speed of the vehicle or take measures to maintain a safe distance between vehicles.

Claims (1)

1. the anti-collision prewarning apparatus for vehicle based on MSP430 micro controller system, the auxiliary field of safety that relates to daily car, it is characterized in that: test the speed range finder module (1), control module (2), alarm module (3), fuel-cut module (4), brake module (5) and telltale (6) of microwave radar, consist of, test the speed range finder module (1), fuel-cut module (4), brake module (5), alarm module (3) and telltale (6) of described microwave radar is connected with described control module (2) respectively, described alarm module (3) comprises speech chip (30), described speech chip (30) is connected with the loud speaker (31) of automobile end, the model of described speech chip (30) is SC8035, this speech chip can serial, segmentation is controlled, and described speech chip (30) is for the synthesis of operation indicating voice, described control module (2) adopts take the MSP430 series monolithic that super low-power consumption is main performance, the described microwave radar range finder module (1) that tests the speed is arranged on body forward structure centre, it is for obtaining relative velocity and the distance of Ben Che and front vehicles, and transfer data to described control module (2), described control module (2) is compared described microwave radar relative velocity and the distance that range finder module (1) transmits back that test the speed from the corresponding safety distance of the different speed of a motor vehicle setting in advance, and then make early warning, and be divided into 2 warning levels respectively to fuel-cut module (4), brake module (5), alarm module (3) and telltale (6) send control command, the 1st warning level is when controlling described alarm module (3) and send alarm signal, upper relative velocity and the distance that shows this car and front vehicles of telltale (6), and control described fuel-cut module (4) and cut off fuel oil supply, car deceleration is travelled, the 2nd warning level is when controlling described alarm module (3) and send alarm signal, upper relative velocity and the distance that shows this car and front vehicles of telltale (6), and control described brake module (5) vehicle is braked, thereby avoid Ben Che and front vehicles to produce collision.

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