CN207747879U - A kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state - Google Patents

Abstract

The utility model discloses a kind of vehicles to prevent knock into the back early warning and avoiding system in case of the high-speed travel state, including signal acquisition module, control module and execution module, the signal acquisition module includes laser range sensor and photoelectric sensor, the control module includes signal processor and comparison circuit, the execution module includes display, buzzer and auxiliary brake, the laser range sensor and photoelectric sensor are separately connected the input terminal of signal processor, the output end of signal processor is separately connected comparison circuit input terminal and display, the output end of the comparison circuit is separately connected buzzer and auxiliary brake；The laser range sensor and photoelectric sensor are installed on own vehicle headstock, and the display and buzzer are installed on oneself car portion, and the auxiliary brake connects own vehicle brake pedal.The utility model has the characteristics that intuitive and reliable, alerting effects are prominent and can the self-actuating brake when driver does not take brake measure in time.

Description

A system for preventing rear-end collision warning and avoiding danger when the vehicle is running at high speed

technical field

The invention belongs to the technical field of vehicle safety alarms, in particular to a rear-end collision prevention early warning and risk avoidance system for vehicles running at high speed

Background technique

In recent years, with the rapid development of the domestic economy, the number of cars has increased year by year, the construction of expressways has become more and more perfect, and the speed of cars has become faster and faster. This makes life more convenient, but at the same time, the incidence of car accidents on expressways remains high. Among them, rear-end collisions are a major factor in the frequent occurrence of expressway accidents. Timely judge the deceleration or braking behavior of the vehicle in front and respond accordingly.

At present, most low-end and middle-end cars do not have safety alarms and intelligent avoidance systems for the deceleration and braking behavior of the vehicle in front. Therefore, in order to avoid rear-end collisions of vehicles, this vehicle specifically designed by the present invention can effectively reduce the incidence of rear-end collisions by preventing rear-end collision warnings and intelligent risk avoidance systems in the high-speed driving state.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a vehicle in the state of high-speed driving to prevent rear-end collision warning and avoidance system. Measures when the automatic braking feature.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A system for preventing rear-end collision warning and risk avoidance under high-speed driving conditions, including a signal acquisition module, a control module and an execution module,

The signal acquisition module includes a laser ranging sensor and a photoelectric sensor,

The control module includes a signal processor and a comparison circuit,

The execution module includes a display, a buzzer and an auxiliary braking device,

Wherein: the laser ranging sensor and the photoelectric sensor are respectively connected to the input end of the signal processor, the output end of the signal processor is respectively connected to the input end of the comparison circuit and the display, and the output end of the comparison circuit is respectively connected to the buzzer and the auxiliary brake device;

The laser ranging sensor and the photoelectric sensor are installed on the front of the vehicle, the display and the buzzer are installed inside the vehicle, and the auxiliary braking device is connected to the brake pedal of the vehicle.

Further, the laser ranging sensor is used to collect the distance signal between the own vehicle and the vehicle in front.

Further, there are two photoelectric sensors, which are respectively installed on both sides of the front of the own vehicle, corresponding to the rear lights of the vehicle ahead; the photoelectric sensors are used to collect brake light signals of the vehicle ahead.

Further, the signal processor is a single-chip microcomputer model AT89S52.

Further, the display is installed on the hollow console in the own car, and the display is used to display the distance between the own car and the vehicle in front in real time.

Further, the buzzer includes a low-frequency prompt alarm sound and a high-frequency prompt alarm sound, wherein: the low-frequency prompt alarm sound is used to remind the driver that the vehicle in front has a braking and deceleration action; the high-frequency prompt alarm sound is used to remind the driver There is a risk of rear-end collision between your vehicle and the vehicle in front.

Further, the auxiliary braking device is a pressure sensor, and the pressure sensor controls the brake pedal of the own vehicle through a solenoid valve, and the brake pedal is a brake pedal.

Compared with the prior art, the present invention has the following beneficial effects:

1. The signal acquisition module can collect two signals: the brake light signal of the vehicle in front and the distance signal between the vehicle in front and the vehicle in front, which improves the reliability of the rear-end collision prevention warning and intelligent avoidance system;

2. The comparison circuit compares the distance information processed by the signal processor to judge whether the distance between the two vehicles is less than the safe distance, and transmits the corresponding control signal to the buzzer and auxiliary brake device for alarm reminder and automatic braking, thereby effectively preventing the occurrence of a rear-end collision;

3. The buzzer can emit two alarm sounds with different frequencies, high and low, to remind the driver.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the module schematic diagram of the present invention;

Fig. 3 is the operating circuit diagram of buzzer among the present invention;

Fig. 4 is a working principle diagram of the auxiliary braking device in the present invention;

Among them: 1-laser ranging sensor, 2-photoelectric sensor, 3-display, 4-buzzer, 5-signal processor, 6-comparison circuit, 7-auxiliary braking device.

Detailed ways

The present invention will be further explained below in conjunction with the accompanying drawings.

As shown in Figures 1-4, a system for preventing rear-end collision warning and risk avoidance under high-speed driving conditions is characterized in that it includes a signal acquisition module, a control module and an execution module, and the signal acquisition module includes a laser ranging sensor 1 And photoelectric sensor 2, described control module comprises signal processor 5 and comparison circuit 6, and described executive module comprises display 3, buzzer 4 and auxiliary braking device 7,

Wherein: the laser ranging sensor 1 and the photoelectric sensor 2 are respectively connected to the input of the signal processor 5, the output of the signal processor 5 is respectively connected to the comparison circuit 6 input and the display, and the output of the comparison circuit 6 is respectively connected to Buzzer 4 and auxiliary braking device 7; described laser ranging sensor 1 and photoelectric sensor 2 are installed on the front of the car, and the display 3 and buzzer 4 are installed inside the car, and the display 3 is specifically installed in the car Behind the inner windshield, it is convenient for the driver to observe, the buzzer 4 is specifically installed on the steering wheel of the own car, the signal processor 5 is installed under the steering wheel of the own car, and the comparison circuit 6 is installed behind the laser distance measuring sensor 1 In the hood of the own car, the auxiliary braking device 7 is connected with the brake pedal of the own car, and the brake pedal is the brake pedal of the own car.

The laser ranging sensor 1 is used to collect the distance signal between the own vehicle and the vehicle in front.

There are two photoelectric sensors 2, which are installed on both sides of the front of the car respectively, corresponding to the taillights of the vehicle in front; the photoelectric sensor 2 is used to collect the brake light signal of the vehicle in front.

Described signal processor 5 is the single-chip microcomputer that model is AT89S52.

Described display 3 is installed on the hollow operating platform in own car, and display 3 is installed in the windshield rear of own car specifically, is convenient to driver's observation, and described display 3 is used for real-time displaying the distance of own car and the front vehicle.

Described buzzer 4 comprises low-frequency prompting alarm sound and high-frequency prompting alarm sound, wherein: low-frequency prompting alarm sound is used for prompting the driver's front vehicle to have brake deceleration action; There is a risk of rear-end collision with the vehicle in front. If the driver does not take deceleration and braking measures after the buzzer sends out a high-frequency warning sound, the system will activate the auxiliary brake device to increase the safe distance from the vehicle in front and prevent the car from driving at high speed. A rear-end collision occurred while driving.

The auxiliary braking device 7 is a pressure sensor, and the pressure sensor controls the brake pedal of the own vehicle through a solenoid valve, and the brake pedal is a brake pedal.

As shown in Fig. 2, the principle of the present invention is: the distance signal of laser rangefinder 1 gathering own car and vehicle ahead, and signal is transmitted to signal processor 5; Photoelectric sensor 2 gathers the vehicle brake light signal ahead, and signal Transmitted to the signal processor 5; the signal processor 5 transmits the signal transmitted by the former to the comparison circuit 6 and the display 3; the display 3 receives the distance information transmitted by the signal processor 5 and can display the distance with the vehicle in front in real time; the comparison circuit 6 After receiving the brake light signal and the distance information transmitted by the signal processor 5, the comparison circuit compares the distance information, and the comparison principle is as follows:

1) The front brake light is on, but the distance between the two vehicles is greater than the safety distance (D>S), the comparison circuit 6 sends a low-frequency alarm control signal to the buzzer 4, and the buzzer 4 sends out a low-frequency warning alarm to remind the driver The vehicle brakes to slow down;

2) The distance between the two vehicles is less than the safety distance but greater than the limit distance (D _S < D < S), the comparison circuit 6 sends a high-frequency alarm control signal to the buzzer 4, and the buzzer 4 sends a high-frequency prompt alarm sound to remind the driver There is a risk of rear-end collision between your own car and the vehicle in front;

3) If the distance between the two vehicles is less than the limit distance (D<D _S ), the comparison circuit 6 sends a control signal for automatic braking to the auxiliary braking device 7, so that the brake pedal performs the braking function and reduces the speed of the vehicle to increase the distance from the vehicle in front to prevent rear-end collision Accidents happen.

As shown in Figure 3, the buzzer is controlled by the signal processor and the comparison circuit, and has two different working states, namely high-frequency working state and low-frequency working state:

The laser ranging sensor transmits the collected distance signal and the photoelectric sensor transmits the collected front brake light signal to the signal processor, and then transmits it to the comparison circuit through the signal processor. After the comparison circuit compares, it is determined that D>S, and the comparison circuit compares the bee The buzzer sends out a low-frequency alarm control signal. At this time, the buzzer is in a low-frequency working state and sends out a low-frequency alarm sound to remind the driver that the vehicle in front has braking and deceleration behavior. If D _S < D < S is determined by the comparison of the intelligent circuit, the comparison circuit will send a high-frequency alarm control signal to the buzzer. The distance between the workshops is already less than the safe distance, and there is a risk of rear-end collision.

As shown in Figure 4, if D<D _S is confirmed by the comparison circuit, the comparison circuit sends a control signal to the built-in pressure sensor of the auxiliary brake device, and the solenoid valve is controlled by the pressure sensor to control the brake pedal to perform the braking function. Then the automatic brake reduces the speed of the vehicle, increases the distance from the vehicle in front, and prevents rear-end collisions.

The invention can not only send out high and low frequency alarms to remind the driver to pay attention, but also automatically activate the auxiliary braking device for automatic braking when the driver does not respond in time, so as to prevent the occurrence of rear-end collision accidents more safely and effectively.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (7)

1. A vehicle prevents rear-end collision warning and risk avoidance system under high-speed driving state, it is characterized in that: comprise signal acquisition module, control module and execution module, The signal acquisition module includes a laser ranging sensor and a photoelectric sensor, The control module includes a signal processor and a comparison circuit, The execution module includes a display, a buzzer and an auxiliary braking device, Wherein: the laser ranging sensor and the photoelectric sensor are respectively connected to the input end of the signal processor, the output end of the signal processor is respectively connected to the input end of the comparison circuit and the display, and the output end of the comparison circuit is respectively connected to the buzzer and the auxiliary brake device; The laser ranging sensor and the photoelectric sensor are installed on the front of the vehicle, the display and the buzzer are installed inside the vehicle, and the auxiliary braking device is connected to the brake pedal of the vehicle. 2. The system for preventing rear-end collision warning and avoiding danger under high-speed driving state of the vehicle according to claim 1, characterized in that: the laser ranging sensor is used to collect the distance signal between the own vehicle and the vehicle in front. 3. The system according to claim 1 for preventing rear-end collision warning and risk avoidance system under high-speed driving state, characterized in that: there are two photoelectric sensors, which are respectively installed on both sides of the front of the own vehicle, and are connected to the front of the vehicle. Corresponding to the tail light; the photoelectric sensor is used to collect the brake light signal of the vehicle in front. 4. The system for preventing rear-end collision warning and risk avoidance under the condition of high-speed driving of the vehicle according to claim 1, characterized in that: the signal processor is a single-chip microcomputer whose model is AT89S52. 5. The system according to claim 1 for preventing rear-end collision warning and risk avoidance system under high-speed driving state, characterized in that: the display is installed on the hollow console in the vehicle, and the display is used for real-time display of the vehicle distance to the vehicle ahead. 6. The system according to claim 1 for preventing rear-end collision warning and risk avoidance system under high-speed driving state, characterized in that: the buzzer includes a low-frequency prompt alarm sound and a high-frequency prompt alarm sound, wherein: the low-frequency prompt The alarm sound is used to remind the driver that the vehicle in front has a brake deceleration action; the high-frequency warning alarm sound is used to remind the driver that there is a risk of rear-end collision between the vehicle and the vehicle in front. 7. The vehicle rear-end collision warning and risk avoidance system according to claim 1, characterized in that: the auxiliary braking device is a pressure sensor, and the pressure sensor controls the brake pedal of the own vehicle through a solenoid valve, The brake pedal is a brake pedal.