CN202669614U - Anti-collision warning and automatic deceleration device of vehicle - Google Patents
Anti-collision warning and automatic deceleration device of vehicle Download PDFInfo
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- CN202669614U CN202669614U CN 201220152897 CN201220152897U CN202669614U CN 202669614 U CN202669614 U CN 202669614U CN 201220152897 CN201220152897 CN 201220152897 CN 201220152897 U CN201220152897 U CN 201220152897U CN 202669614 U CN202669614 U CN 202669614U
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Abstract
The utility model discloses an anti-collision warning and automatic deceleration device of a vehicle. The anti-collision warning and automatic deceleration device of the vehicle comprises a radar sensor, a speed sensor, road adhesion coefficient selection buttons, a microprocessor, an indicator light, a display, a stepper motor and an auxiliary throttle valve slice. The auxiliary throttle valve slice is mounted in an air inlet pipeline and controlled by the microprocessor, the stepper motor is used to drive the auxiliary throttle valve slice to move downwards to reduce throttle valve opening, an electronic switch is used by a user for turning on braking lamps when the speed of the vehicle reduces automatically, and therefore a driver of a vehicle behind the vehicle is warned and prompted to pay attention to maintenance of a reasonable distance from the vehicle. By means of the anti-collision warning and automatic deceleration device of the vehicle, appropriate road adhesion coefficient can be selected manually according to the conditions of a road, and therefore calculation accuracy of a safe distance from other vehicles is improved, and reliability of the system is improved.
Description
Technical field
The utility model belongs to the vehicle automation field, more specifically, relates to a kind of vehicle collision avoidance early warning and automatic slow down device.
Background technology
Along with economy and development society, people's living standard is also more and more higher, and it is more and more universal that automobile also becomes, but the generation of simultaneously traffic accident is also more and more.Particularly in recent years along with the rapid growth of China's express highway mileage number, the traffic accident that occurs on the express highway also presents the situation of surge, and in a single day the vehicle of running at high speed have an accident, and consequence is very serious, often car crash.The rear-end collision collision is the principal mode of traffic accidents, accounts for about 36% of the total accident of express highway, and the property damage that causes and personal casualty are the most serious.So reducing the generation of expressway traffic accident mainly sets about from the incidence that reduces rear-end collision.The reason of vehicle generation rear-end impact has a lot, and its major cause is that Vehicle Speed is too high, the vehiclar gap between the vehicle is too small, braking is untimely etc., under the abominable condition of driver tired driving or weather conditions the rear-end impact accident occurs very easily also.Therefore, a kind of intelligent anti-collision system that can effectively reduce the incidence of rear-end collision of design just seems particularly important and urgent.
Many early warning technologies that prevent vehicle rear-end collision are arranged in the prior art, but all exist the deficiency of two aspects: the one,, in these early warning technologies, during the computationally secure spacing, the coefficient of road adhesion value of selecting is all fixed, the safe distance between vehicles poor accuracy that calculates like this is because the adhesion value value of dry pavement and wet-skid road surface differs greatly; The 2nd,, these early warning technologies just only are confined to send warning, do not help in time to reduce the speed of a motor vehicle and do not increase spacing, and often the time in 1 second just can be saved a car people life.
The utility model content
For the problems referred to above and the deficiencies in the prior art, the purpose of this utility model is, a kind of vehicle collision avoidance early warning and automatic slow down device are provided, this device can be monitored in real time from car and front truck information, provided warning from car chaufeur and back car chaufeur at the actual spacing of two cars during less than safe distance between vehicles, and reduce automatically car speed, avoid because too small, too high the leading of speed of spacing and the generation of the rear-end impact accident that stopping distance causes not, thus the safety that improves high speed traveling.
To achieve these goals, the utility model is taked following technical solution:
A kind of vehicle collision avoidance early warning and automatic slow down device comprise:
Be installed in the middle radar sensor of vehicle bumper, be used for gathering this car and the real-time spacing of front truck and front vehicles velocity information;
Be installed in the speed sensor in the transmission case, be used for gathering the real-time speed of a motor vehicle of this car;
Be installed in the selection of the coefficient of road adhesion on console button in the car, be used for the adhesion value value that the manual selection of chaufeur is consistent with actual road surface situation;
Microprocessor for the input message of selecting button to provide according to described radar sensor, car speed sensor and adhesion value, is controlled alarm lamp, telltale, stepping motor and electronic switch by calculated braking distance;
Be installed in gauge panel other described alarm lamp and telltale, by microprocessor control work, provide respectively the real-time spacing of security alarm and demonstration and front truck to chaufeur;
Described stepping motor and auxiliary throttle blade, auxiliary throttle blade is installed in the induction tract, by microprocessor control, moves down by stepping motor band dynamic auxiliary throttle blade, reduces valve opening;
Described electronic switch is used for opening brake lamp when automatic retarding begins, and caution is provided for the front vehicle chaufeur, points out it to note keeping reasonable spacing;
Radar sensor, car speed sensor and coefficient of road adhesion are connected button to be connected with the input end of microprocessor respectively, alarm lamp, telltale, stepping motor and electronic switch are connected with output end of microprocessor and are connected, and the mouth of auxiliary throttle blade and stepping motor is captiveed joint by screw.
Other characteristics of the present utility model are:
Be provided with hand switch, as required manually opened and shutdown system;
Described radar sensor is selected millimeter wave radar;
Described microprocessor is selected 89C51 type micro controller system;
Described telltale is selected EDM809 segment code type Liquid Crystal Display;
Described electronic switch is selected power diode; Described alarm lamp is selected red LED lamp.
A kind of vehicle collision avoidance early warning of the present utility model and automatic slow down device, can be when galloping, the speed of a motor vehicle and spacing are carried out Real-Time Monitoring and demonstration, report to the police during less than safe distance between vehicles at actual spacing, and by auxiliary throttle blade reduction engine power, thereby the reduction speed of a motor vehicle avoids vehicle owing to the generation of the rear-end impact accident that the speed of a motor vehicle is too high, vehiclar gap is too small, stopping distance is not enough to be caused, the safety that has effectively improved high speed traveling.
The utility model has the advantage of, but simple in structure, the high generalization of practicality is strong, and can get rid of the impact of traffic environment, descend as chaufeur to provide real-time spacing information, guarantee driving safety in rain, the not good extreme weather conditions of greasy weather visual isopter.
Another advantage of the present utility model is, can manually select suitable coefficient of road adhesion value according to the road surface situation, thereby improve the accuracy of computation of safe distance between vehicles, improves the reliability of system.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the connection diagram of electronic switch.
Fig. 3 is the installation site schematic diagram of auxiliary throttle blade.
Label among the figure represents respectively, 1, radar sensor; 2, car speed sensor; 3, adhesion value select switch; 4, microprocessor; 5, telltale; 6, alarm lamp; 7, stepping motor; 8, electronic switch; 9, auxiliary throttle blade.
The utility model is further explained below in conjunction with drawings and Examples.
The specific embodiment
With reference to Fig. 1, the present embodiment provides the structure of a kind of vehicle collision avoidance early warning and automatic slow down device, comprises radar sensor 1, car speed sensor 2, adhesion value select switch 3, microprocessor 4, telltale 5, alarm lamp 6, stepping motor 7, electronic switch 8 and auxiliary throttle blade 9.
Adhesion value select switch 3 is arranged on the console, selects suitable adhesion value by chaufeur according to actual road surface situation;
Telltale 5 and alarm lamp 6 are installed in by the gauge panel, are used for showing real-time spacing and providing warning to chaufeur;
Auxiliary throttle blade 9 is installed in the induction tract, by microprocessor 4 controls, drives adjusting air inflow quantity by stepping motor 7.
In the present embodiment, radar sensor 1 adopts millimeter wave radar, and microprocessor 4 can be selected 89C51 type micro controller system, and telltale 5 is selected EDM809 segment code type Liquid Crystal Display.
The working process of a kind of vehicle collision avoidance early warning and automatic slow down device is as follows:
After system opened, chaufeur was manually selected suitable coefficient of road adhesion value Φ by coefficient of road adhesion switch 3, the real-time spacing S that radar sensor 1 gathers from car and front truck, and before the speed V of front truck, the real-time vehicle velocity V that car speed sensor 2 gathers from car
From, microprocessor 4 calculates stopping distance S according to the information of input according to predefined program and formula
Braking:
Wherein, t
0Comprise time of driver's reaction, brake coordination time and build-up time of braking force, the value of keeping of going bail for here is 2 seconds; Adhesion value select switch 3 is provided with three different adhesion value values, is respectively dry pavement (Φ=0.85), moist road surface (Φ=0.6) and ice and snow road (Φ=0.1).
Safe distance between vehicles S
SafetyBe generally stopping distance S
BrakingThe ratio η that suitable amplification is certain, get η=1.1 events here:
S
Safety=S
Braking* η
The real-time spacing S that microprocessor 4 collects radar sensor 1 shows at telltale 5 enterprising Mobile states, and with real-time spacing S and safe distance between vehicles S
SafetyCompare, if S＜S
Safety: microprocessor 4 control alarm lamps 6 carry out alarm; And 7 work of control step motor, band dynamic auxiliary throttle blade 9 moves down, and reduces aperture, reduces engine power, thereby automatically reduces the speed of a motor vehicle; Open simultaneously electronic switch 8, start brake lamp, give the caution of back car chaufeur, point out its attention to remain a safe distance behind the car in front.If S 〉=S
Safety, microprocessor 4 control alarm lamps 6 are closed, and electronic switch 8 is closed, and brake lamp extinguishes, and 7 counter motions of control step motor, makes auxiliary throttle blade 9 be in full-gear, and it is normal that the speed of a motor vehicle is recovered.
The open theory of brake lamp is described in conjunction with Fig. 2.Electronic switch 8 is pliotron, and with the brake pedal switch in parallel of brake lamp, the P1.2 mouth that the base stage of pliotron is connected with microprocessor connects.When actual spacing S less than safe distance between vehicles S
SafetyThe time, the P1.2 mouth of microprocessor 4 is to the base stage output high level of pliotron, electronic switch 8 conductings, brake lamp unlatching; When actual spacing S more than or equal to safe distance between vehicles S
SafetyThe time, the P1.2 mouth of microprocessor 4 is to the base stage output low level of pliotron, and electronic switch 8 ends, and brake lamp is closed.
In the present embodiment, be provided with hand switch, when low speed driving, this device of manual-lock as required.
Although below by reference to the accompanying drawings embodiment of the present utility model is described, the utility model is not limited to above-mentioned specific embodiments and applications field, and above-mentioned specific embodiments only is schematic, guiding, rather than restrictive.Those of ordinary skill in the art in the situation that does not break away from the scope that the utility model claim protects, can also make a variety of forms under the enlightenment of this specification sheets, these all belong to the row of the utility model protection.
Claims (2)
1. a vehicle collision avoidance early warning and automatic slow down device comprise:
Be installed in the middle radar sensor of vehicle bumper, be used for gathering this car and the real-time spacing of front truck and front vehicles velocity information;
Be installed in the speed sensor in the transmission case, be used for gathering the real-time speed of a motor vehicle of this car;
Be installed in the selection of the coefficient of road adhesion on console button in the car, be used for the adhesion value value that the manual selection of chaufeur is consistent with actual road surface situation;
Microprocessor for the input message of selecting button to provide according to described radar sensor, car speed sensor and adhesion value, is controlled alarm lamp, telltale, stepping motor and electronic switch by calculated braking distance;
Be installed in gauge panel other described alarm lamp and telltale, by microprocessor control work, provide respectively the real-time spacing of security alarm and this car of demonstration and front truck to chaufeur;
Described stepping motor and auxiliary throttle blade, auxiliary throttle blade is installed in the induction tract, by microprocessor control, moves down by stepping motor band dynamic auxiliary throttle blade, reduces valve opening;
Described electronic switch is used for opening brake lamp when automatic retarding begins;
Radar sensor, car speed sensor and coefficient of road adhesion are connected button to be connected with the input end of microprocessor respectively, alarm lamp, telltale, stepping motor and electronic switch are connected with output end of microprocessor and are connected, and the mouth of auxiliary throttle blade and stepping motor is captiveed joint by screw.
2. a kind of vehicle collision avoidance early warning according to claim 1 and automatic slow down device, it is characterized in that: radar sensor is millimeter wave radar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152897 CN202669614U (en) | 2012-04-12 | 2012-04-12 | Anti-collision warning and automatic deceleration device of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152897 CN202669614U (en) | 2012-04-12 | 2012-04-12 | Anti-collision warning and automatic deceleration device of vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN202669614U true CN202669614U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220152897 Expired - Fee Related CN202669614U (en) | 2012-04-12 | 2012-04-12 | Anti-collision warning and automatic deceleration device of vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759261A (en) * | 2016-02-17 | 2016-07-13 | 韦醒妃 | Automatic speed reduction device having identification function |
| CN111619579A (en) * | 2019-02-27 | 2020-09-04 | 罗伯特·博世有限公司 | Method for controlling an electronic stabilization system |
| CN112298136A (en) * | 2020-11-05 | 2021-02-02 | 北京邮电大学 | Driving control method, device and equipment for automatic driving vehicle and readable medium |
-
2012
- 2012-04-12 CN CN 201220152897 patent/CN202669614U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759261A (en) * | 2016-02-17 | 2016-07-13 | 韦醒妃 | Automatic speed reduction device having identification function |
| CN105759261B (en) * | 2016-02-17 | 2018-03-06 | 深圳市奥德迈科技术有限公司 | A kind of automatic slow-down device with identification function |
| CN111619579A (en) * | 2019-02-27 | 2020-09-04 | 罗伯特·博世有限公司 | Method for controlling an electronic stabilization system |
| CN112298136A (en) * | 2020-11-05 | 2021-02-02 | 北京邮电大学 | Driving control method, device and equipment for automatic driving vehicle and readable medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20140412 |