CN108068804A - A kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state - Google Patents
A kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state Download PDFInfo
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- CN108068804A CN108068804A CN201711340579.6A CN201711340579A CN108068804A CN 108068804 A CN108068804 A CN 108068804A CN 201711340579 A CN201711340579 A CN 201711340579A CN 108068804 A CN108068804 A CN 108068804A
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- vehicle
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- early warning
- display
- buzzer
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- 230000000694 effects Effects 0.000 abstract description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
- B60W30/09—Taking automatic action to avoid collision, e.g. braking and steering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/143—Alarm means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/90—Single sensor for two or more measurements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/801—Lateral distance
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention 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 connect the input terminal of signal processor respectively, the output terminal of signal processor connects comparison circuit input terminal and display respectively, the output terminal of the comparison circuit connects buzzer and auxiliary brake respectively；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 present invention 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
Technical field
The invention belongs to vehicle safety alerting techniques field, more particularly to a kind of vehicle prevents from chasing after in case of the high-speed travel state
Tail early warning and avoiding system
Background technology
In recent years, as the rapid development of domestic economy causes car ownership to increase year by year, expressway construction is more next
More perfect, automobile driving speed is getting faster.This so that life is further convenient, but the traffic accident incidence of highway also occupies simultaneously
It is high not under, wherein rear-end collision is the big factor that highway traffic accident takes place frequently, and rear-end collision main cause is front-and-rear vehicle distance
Cross near, rear car driver cannot judge the deceleration of front truck or brake behavior and make a response in time.
There is no safety alarm and intelligent hedging systems for the slowing-down brake behavior of front truck for current most of low and middle-end automobiles
System.So to avoid vehicle that rear-end collision occurs, this vehicle that the present invention specifically designs prevents from chasing after in case of the high-speed travel state
Tail early warning and intelligent avoiding system can effectively reduce the incidence of vehicle rear-end collision accident.
The content of the invention
For above-mentioned deficiency of the prior art, it is an object of the invention to provide a kind of vehicle in case of the high-speed travel state
Prevent knock into the back early warning and avoiding system, which has intuitive and reliable, alerting effects prominent and can be not timely in driver
When taking brake measure the characteristics of self-actuating brake.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme：
A kind of vehicle prevents 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,
Wherein：The laser range sensor and photoelectric sensor connect the input terminal of signal processor respectively, at signal
The output terminal of reason device connects comparison circuit input terminal and display respectively, and the output terminal of the comparison circuit connects buzzer respectively
And auxiliary brake；
The laser range sensor and photoelectric sensor are installed on own vehicle headstock, and the display and buzzer are installed on
Own car portion, the auxiliary brake connect own vehicle brake pedal.
Further, the laser range sensor, for gathering the distance signal of own vehicle and front vehicles.
Further, the photoelectric sensor is two, is respectively arranged in the both sides of own vehicle headstock, the vehicle with front vehicles
Taillight is corresponding；The photoelectric sensor is used to gather the brake modulating signal of front vehicles.
Further, the signal processor is the microcontroller of model AT89S52.
Further, the display is installed on the hollow operations platform of oneself car, and the display is used for real-time display
The distance of own vehicle and front vehicles.
Further, the buzzer includes low frequency indicating alarm sound and high-frequency indicating alarm sound, wherein：Low frequency
Indicating alarm sound is used to that driver's front vehicles to be prompted to have brake deceleration action；High-frequency indicating alarm sound drives for prompting
The own vehicle of personnel and front vehicles knock into the back risk.
Further, the auxiliary brake be pressure sensor, the pressure sensor by solenoid valve control oneself
Vehicle brake pedal, the brake pedal are brake pedal.
Compared with prior art, the invention has the advantages that：
1st, signal acquisition module can gather two kinds of letters of brake modulating signal and own vehicle and the distance signal of front vehicles of front truck
Number, improve the reliability of prevent from knocking into the back early warning and intelligent avoiding system；
2nd, the range information progress comparison that comparison circuit crosses signal processor processes, judges whether two vehicles distance is less than
Safe distance, and corresponding control signal is transferred to buzzer, auxiliary brake progress alarm and reminding and self-actuating brake, and then
Effectively prevent the generation of rear-end collision；
3rd, buzzer can send two kinds of alarm songs of height different frequency to remind driver.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the module principle figure of the present invention；
Fig. 3 is the working circuit diagram of buzzer in the present invention；
Fig. 4 is the fundamental diagram of auxiliary brake in the present invention；
Wherein：1- laser range sensors, 2- photoelectric sensors, 3- displays, 4- buzzers, 5- signal processors, 6-
Comparison circuit, 7- auxiliary brakes.
Specific embodiment
Further explanation is done to the present invention below in conjunction with the accompanying drawings.
As shown in Figs 1-4, a kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state, and feature exists
In：Including signal acquisition module, control module and execution module, the signal acquisition module includes 1 He of laser range sensor
Photoelectric sensor 2, the control module include signal processor 5 and comparison circuit 6, and the execution module includes display 3, bee
Ring device 4 and auxiliary brake 7,
Wherein：The laser range sensor 1 and photoelectric sensor 2 connect the input terminal of signal processor 5, signal respectively
The output terminal of processor 5 connects 6 input terminal of comparison circuit and display respectively, and the output terminal of the comparison circuit 6 connects respectively
Buzzer 4 and auxiliary brake 7；The laser range sensor 1 and photoelectric sensor 2 are installed on own vehicle headstock, described aobvious
Show that device 3 and buzzer 4 are installed on oneself car portion, display 3 is specifically installed on oneself interior windshield rear, convenient for driver
Observation, buzzer 4 are specifically mounted on own vehicle steering wheel, and the signal processor 5 is mounted on own vehicle steering wheel in the following, described
For comparison circuit 6 in the bonnet of own vehicle after laser range sensor 1, the auxiliary brake 7 connects own vehicle braking
Pedal, brake pedal are the brake pedal of own vehicle.
The laser range sensor 1, for gathering the distance signal of own vehicle and front vehicles.
The photoelectric sensor 2 is two, is respectively arranged in the both sides of own vehicle headstock, opposite with the tail-light of front vehicles
It should；The photoelectric sensor 2 is used to gather the brake modulating signal of front vehicles.
The signal processor 5 is the microcontroller of model AT89S52.
The display 3 is installed on the hollow operations platform of oneself car, and display 3 is specifically installed on own car and keeps out the wind glass
Glass rear is observed convenient for driver, and the display 3 is for the own vehicle of real-time display and the distance of front vehicles.
The buzzer 4 includes low frequency indicating alarm sound and high-frequency indicating alarm sound, wherein：Low frequency indicating alarm
Sound is used to that driver's front vehicles to be prompted to have brake deceleration action；High-frequency indicating alarm sound is used to prompt the own vehicle of driver
It knocks into the back risk with front vehicles, if buzzer, after high-frequency indicating alarm sound is sent, driver does not take retarding braking
Measure, the system just start auxiliary brake, increase the safe distance with front truck, automobile is avoided to send out in case of the high-speed travel state
Raw rear-end collision.
The auxiliary brake 7 is pressure sensor, and the pressure sensor is stepped on by the own vehicle braking of solenoid valve control
Plate, the brake pedal are brake pedal.
As shown in Fig. 2, the principle of the present invention is：Laser range sensor 1 gathers own vehicle and the distance signal of front vehicles,
And transmit a signal to signal processor 5；Photoelectric sensor 2 gathers front vehicles brake modulating signal, and transmits a signal to letter
Number processor 5；Signal processor 5 is by the signal transmission that the former transmits to comparison circuit 6 and display 3；Display 3 receives
The range information transmitted to signal processor 5 can real-time display and front vehicles distance；Comparison circuit 6 receives signal processing
The brake modulating signal and range information that device 5 transmits, comparison circuit information of adjusting the distance are compared, and comparison principle is as follows：
1) front brake lamp lights, but two vehicles distance is more than safe distance (D>S), comparison circuit 6 sends buzzer 4 low
The control signal of frequency alarm, buzzer 4 send low frequency indicating alarm sound, and driver's front vehicles is reminded to have brake deceleration row
For；
2) two vehicles distance is less than safe distance but more than critical distance (DS<D<S), comparison circuit 6 sends height to buzzer 4
The control signal of frequency alarm, buzzer 4 send high-frequency indicating alarm sound, and the own vehicle of driver and front vehicles is reminded to knock into the back wind
Danger；
3) two vehicles distance is less than critical distance (D<DS), comparison circuit 6 sends self-stopping control to auxiliary brake 7
Signal processed, makes brake pedal perform brake function and reduces speed to increase and leading vehicle distance, prevents rear-end collision.
According to automobile theory can intimate vehicle and the mathematical model of front vehicles safe distance between vehicles it is as follows：
In formula：The own vehicles of S are to the safe distance of front vehicles, unit m；V1Own vehicle travel speed, unit m/s；a1
Own vehicle deceleration, unit m/s2；τ1For time of driver's reaction, unit s；τ2' it is reaction time of braking device,
It is single
Position is s；τ2" for braking deceleration rise time, unit s.
In formula：DsOwn vehicle is to the critical distance of front vehicles, unit m；V2Front vehicles travel speed, unit m/s；
T ' drivers are to the reaction crash time of front vehicles, unit s；a2Front vehicles braking acceleration, unit m/s2.
The actual spacing of own vehicle and front vehicles：
In formula：D be actual spacing, unit m；C is the light velocity, unit m/s；T be light wave two-way time, unit s.
As shown in figure 3, buzzer is controlled through signal processor and comparison circuit, it is there are two types of different working conditions, i.e., high
Frequency working condition and low frequency operation state：
Laser range sensor is the distance signal and photoelectric sensor collected the front truck brake modulating signal collected
Signal processor is transferred to, comparison circuit is transferred to by signal processor, D is relatively determined by comparison circuit>S, it is more electric
Road sends buzzer the control signal of low frequency alarm, and buzzer is in low frequency operation state at this time, sends the alarm song of low frequency,
Driver's front vehicles is reminded to have brake deceleration behavior.If relatively determine D by smart circuitS<D<S, comparison circuit is to buzzing
Device sends the control signal of high frequency alarm, and buzzer is in high-frequency work state at this time, sends the alarm song of high frequency, and warning drives
Distance between member and front truck has the risk to knock into the back already less than safe distance.
If as shown in figure 4, relatively determine D by comparison circuit<DS, comparison circuit is to the built-in pressure of auxiliary brake
Sensor sends control signal, to control the solenoid valve to pass through solenoid valve brake pedal is controlled to perform brake by pressure sensor
Function, and then self-actuating brake reduces speed, increasing and leading vehicle distance, prevents rear-end collision.
The present invention can not only send low-and high-frequency alarm and reminding driver note that can also react automatic not in time in driver
Start auxiliary brake and carry out self-actuating brake, more safely and effectively prevent the generation of rear-end collision.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state, it is characterised in that：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,
Wherein：The laser range sensor and photoelectric sensor connect the input terminal of signal processor, signal processor respectively
Output terminal connect comparison circuit input terminal and display respectively, the output terminal of the comparison circuit connects buzzer and auxiliary respectively
Help brake gear；
The laser range sensor and photoelectric sensor are installed on own vehicle headstock, and the display and buzzer are installed on own vehicle
Inside, the auxiliary brake connect own vehicle brake pedal.
2. vehicle according to claim 1 prevents knock into the back early warning and avoiding system in case of the high-speed travel state, feature exists
In：The laser range sensor, for gathering the distance signal of own vehicle and front vehicles.
3. vehicle according to claim 1 prevents knock into the back early warning and avoiding system in case of the high-speed travel state, feature exists
In：The photoelectric sensor is two, is respectively arranged in the both sides of own vehicle headstock, corresponding with the tail-light of front vehicles；Institute
Photoelectric sensor is stated for gathering the brake modulating signal of front vehicles.
4. vehicle according to claim 1 prevents knock into the back early warning and avoiding system in case of the high-speed travel state, feature exists
In：The signal processor is the microcontroller of model AT89S52.
5. vehicle according to claim 1 prevents knock into the back early warning and avoiding system in case of the high-speed travel state, feature exists
In：The display is installed on the hollow operations platform of oneself car, and the display is used for the own vehicle of real-time display and front vehicles
Distance.
6. vehicle according to claim 1 prevents knock into the back early warning and avoiding system in case of the high-speed travel state, feature exists
In：The buzzer includes low frequency indicating alarm sound and high-frequency indicating alarm sound, wherein：Low frequency indicating alarm sound is used for
Prompting driver's front vehicles have brake deceleration action；High-frequency indicating alarm sound is used to prompt the own vehicle of driver and front
Vehicle knocks into the back risk.
7. vehicle according to claim 1 prevents knock into the back early warning and avoiding system in case of the high-speed travel state, feature exists
In：The auxiliary brake is pressure sensor, and the pressure sensor is described by the own vehicle brake pedal of solenoid valve control
Brake pedal is brake pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711340579.6A CN108068804A (en) | 2017-12-14 | 2017-12-14 | A kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711340579.6A CN108068804A (en) | 2017-12-14 | 2017-12-14 | A kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state |
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| Publication Number | Publication Date |
|---|---|
| CN108068804A true CN108068804A (en) | 2018-05-25 |
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ID=62158642
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711340579.6A Pending CN108068804A (en) | 2017-12-14 | 2017-12-14 | A kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532660A (en) * | 2018-11-21 | 2019-03-29 | 福瑞斯特汽车技术(苏州)有限公司 | A kind of automotive safety accident prevention intelligent recognition system for prompting |
| CN110949378A (en) * | 2019-12-30 | 2020-04-03 | 福州大学 | Anti-collision rear-end collision device and method for automobile under high-speed working condition |
| CN115257666A (en) * | 2022-08-03 | 2022-11-01 | 福建福大北斗通信科技有限公司 | Comprehensive early warning system and diagnosis method based on Beidou positioning |
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| CN207747879U (en) * | 2017-12-14 | 2018-08-21 | 南京航空航天大学 | A kind of vehicle prevents knock into the back early warning and avoiding system in case of the high-speed travel state |
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2017
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532660A (en) * | 2018-11-21 | 2019-03-29 | 福瑞斯特汽车技术(苏州)有限公司 | A kind of automotive safety accident prevention intelligent recognition system for prompting |
| CN110949378A (en) * | 2019-12-30 | 2020-04-03 | 福州大学 | Anti-collision rear-end collision device and method for automobile under high-speed working condition |
| CN110949378B (en) * | 2019-12-30 | 2022-04-19 | 福州大学 | Anti-collision rear-end collision method for automobile under high-speed working condition |
| CN115257666A (en) * | 2022-08-03 | 2022-11-01 | 福建福大北斗通信科技有限公司 | Comprehensive early warning system and diagnosis method based on Beidou positioning |
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