CN203864558U - Car rear-end collision prevention alarming device - Google Patents
Car rear-end collision prevention alarming device Download PDFInfo
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- CN203864558U CN203864558U CN201420049010.XU CN201420049010U CN203864558U CN 203864558 U CN203864558 U CN 203864558U CN 201420049010 U CN201420049010 U CN 201420049010U CN 203864558 U CN203864558 U CN 203864558U
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Abstract
The utility model belongs to the technical field of car rear-end prevention alarming, and discloses a car rear-end collision prevention alarming device. The car rear-end collision prevention alarming device comprises an alarm, a data processing unit, a voice prompt module arranged on a driver operation table, a voice recognition module arranged on the driver operation table and millimeter-wave radar used for detecting cars right in front, wherein the millimeter-wave radar is fixed in the center of a bumper in the front of the car where a driver is located, the input end of the data processing unit is electrically connected with the output end of the voice recognition module and the output end of the millimeter-wave radar, and the output end of the data processing unit is electrically connected with the voice prompt module and the alarm.
Description
Technical field
The utility model belongs to automobile anti-rear end collision early warning technology field, particularly a kind of vehicle anti-rear collision collision warning device.
Background technology
Preventing car from close trailing collision active safety system is as a kind of active safety system, and it can measure speed and the distance of the place ahead target accurately, finds potential danger, sends warning in time to driver, in emergency circumstances can automatically make a response, and avoids the generation of accident.Two cars are respectively with v
1, v
2speed before and after travel, be to guarantee the safety of driving, the spacing between two cars must be greater than with car alarm threshold value.When the distance between two cars is less than or equal to car alarm threshold value, system just should be judged potential longitudinal impact, and gives the alarm.
But, because steerman exists driving performance, in the problems referred to above, be embodied in steerman the judgement of distance between front truck and Ben Che be there are differences, steerman there are differences the subjective judgement with car alarm threshold value.In actual driving procedure, steerman is the main subjective judgement based on to distance between two cars again, and selects suitable following distance and when distance is less than with car alarm threshold value between subjective judgement two cars, take braking deceleration, to prevent that rear-end impact from occurring.
At present, although preventing collision forewarn system is comparatively ripe, mistake police and false dismissal become urgent problem.So-called mistake is alert to be referred to and in the situation that not needing to report to the police, thinks dangerous situation and report to the police, and this will disturb the normal driving of steerman, even cause that steerman is divert one's attention or anxious state of mind.False dismissal refers in the time of should reporting to the police under dangerous situation but thinks not dangerous situation, and does not give a warning, and this means that preventing collision forewarn system loses due effect.This is embodied in described problem: the warning when preventing collision forewarn system thinks that danger and steerman think not dangerous, will become mistake to steerman alert; When preventing collision forewarn system thinks that not dangerous and steerman does not have alarm while thinking danger, will become false dismissal to steerman.When the prediction policy of not considering steerman Distance Judgment characteristic is when same car used by the same steerman under different steermans or different mental and physical, can more frequent and seriously there is mistake police or false dismissal.
Utility model content
The purpose of this utility model is to propose a kind of vehicle anti-rear collision collision warning device.The utility model can guarantee that different steermans or same steerman, when different mental and physical steering vehicle, play a role more accurately and efficiently.
For realizing above-mentioned technical purpose, the utility model adopts following technical scheme to be achieved.
A kind of vehicle anti-rear collision collision warning device, comprise annunciator, it is characterized in that, also comprise: data processing unit, be arranged on the voice cue module on driver's operation platform, the millimeter wave radar that is arranged on the sound identification module on driver's operation platform and surveys for aligning front vehicles, described millimeter wave radar is fixed on the center of chaufeur place vehicle front bumper/spoiler;
The input end of described data processing unit is electrically connected to respectively the mouth of sound identification module and the mouth of millimeter wave radar; The mouth of described data processing unit is electrically connected to respectively described voice cue module and annunciator.
The feature of the technical program and further improvement are:
Described voice cue module adopts the TF040 type One Time Programmable speech chip of QT brand; The model of described sound identification module is WS-017GM11A550; Described millimeter wave radar adopts the ESR-millimeter wave radar of Delphi company.
Described data processing unit is microprocessor, micro controller system or arm processor; Described annunciator is loud speaker or indicator lamp.
Described millimeter wave radar is for judging following distance in real time, and for the result of judgement is sent to data processing unit; The described following distance distance between front vehicles and this vehicle of making a comment or criticism; Described data processing unit is for successively repeatedly sending voice message control signal to voice cue module; Described voice cue module, for according to described voice message control signal, points out chaufeur to carry out voice counting to following distance; Described sound identification module, for the content of identification of driver voice counting, for drawing the following distance of chaufeur judgement, and is sent to described data processing unit for the following distance that chaufeur is judged; Described data processing unit carries out size relatively for the following distance that the following distance of chaufeur judgement and synchronization millimeter wave radar are surveyed, for according to big or small comparative result to proofreading and correct with car alarm threshold value, draw and follow car alarm threshold value after correction; For according to after proofreading and correct with car alarm threshold value, control annunciator and report to the police.
The beneficial effects of the utility model are: the utility model reduces mistake police and the false dismissal of the anti-early warning collision system that knocks into the back effectively, promote the precise and high efficiency of rear-end collision prevention early warning system.Be particularly suitable for that same vehicle is driven by different steermans or same steerman is driven under different mental and physical, can realize early warning accurately and efficiently.
Accompanying drawing explanation
Fig. 1 is is the principle schematic of preventing collision early warning;
Fig. 2 is the circuit connection diagram of vehicle anti-rear collision collision warning device of the present utility model;
Fig. 3 is the working process schematic diagram of vehicle anti-rear collision collision warning device of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to Fig. 1, it is the principle schematic of preventing collision early warning.Two cars are respectively with v
1, v
2speed before and after travel, be to guarantee the safety of driving, the space D between two cars
0must be greater than with car alarm threshold value D
w.Distance between two cars is less than or equal to D
wtime, system just should be judged potential longitudinal impact, and gives the alarm.
But, because chaufeur exists driving performance, in the problems referred to above, be embodied in chaufeur the judgement of distance between front truck and Ben Che be there are differences, chaufeur is to following car alarm threshold value D'
wsubjective judgement there are differences.In actual driving procedure, chaufeur is again mainly based on to distance D between two cars
0subjective judgement, and select suitable following distance and distance D between subjective judgement two cars
0be less than with car alarm threshold value D'
wtime, take braking deceleration, to prevent that rear-end impact from occurring.
At present, although preventing collision forewarn system is comparatively ripe, mistake police and false dismissal become urgent problem.So-called mistake is alert to be referred to and in the situation that not needing to report to the police, thinks dangerous situation and report to the police, and this will disturb the normal driving of steerman, even cause that steerman is divert one's attention or anxious state of mind.False dismissal refers in the time of should reporting to the police under dangerous situation but thinks not dangerous situation, and does not give a warning, and this means that preventing collision forewarn system loses due effect.This is embodied in described problem: the warning when preventing collision forewarn system thinks that danger and steerman think not dangerous, will become mistake to steerman alert; When preventing collision forewarn system thinks that not dangerous and steerman does not have alarm while thinking danger, will become false dismissal to steerman.When the prediction policy of not considering steerman Distance Judgment characteristic is when same car used by the same steerman under different steermans or different mental and physical, can more frequent and seriously there is mistake police or false dismissal.
For above-mentioned defect, the utility model embodiment has proposed a kind of vehicle anti-rear collision collision warning device and method for early warning.This vehicle anti-rear collision collision warning device comprises millimeter wave radar, and the safety lever centre of millimeter wave radar fixed installation and this vehicle front, for surveying front vehicles.Specifically, millimeter wave radar is for surveying relative angle between distance, front vehicles and this vehicle between front vehicles and this vehicle and the relative velocity between front vehicles and this vehicle.In the utility model embodiment, described millimeter wave radar adopts the ESR-millimeter wave radar of Delphi company, but is not limited to the millimeter wave radar of this kind of model.
This vehicle anti-rear collision collision warning device comprises sound identification module, is fixed on the left side of driver's operation platform, for the voice counting of identification of driver.In the utility model embodiment, the model of sound identification module is WS-017GM11A550, but is not limited to this model.
This vehicle anti-rear collision collision warning device also comprises voice cue module, and voice cue module is fixed on the left side of driver's operation platform, for sending voice message to chaufeur.In the utility model embodiment, voice cue module adopts the TF040 type One Time Programmable speech chip of QT brand, but is not limited to the chip of this model.
This vehicle anti-rear collision collision warning device comprises data processing unit and annunciator.With reference to Fig. 2, it is the circuit connection diagram of vehicle anti-rear collision collision warning device of the present utility model.The input end of this data processing unit is electrically connected to respectively the mouth of sound identification module and the mouth of millimeter wave radar; The mouth of data processing unit is electrically connected to respectively described voice cue module and annunciator.Data processing unit is used for controlling voice cue module and sends voice signal, for receiving the data from sound identification module and millimeter wave radar, and according to the data that receive to revising with car alarm threshold value.Below data processing unit and annunciator are illustrated, data processing unit is microprocessor, micro controller system or arm processor; Above-mentioned annunciator is loud speaker or indicator lamp.The control of annunciator can realize by relay in addition, and now, the power end of annunciator is serially connected with the pilot switch of relay, and the control end of relay is electrically connected to the mouth of data processing unit.After data processing unit transmits control signal to relay, the mode of operation of relay can change, and like this, annunciator can start to report to the police or stop alarm.
With reference to Fig. 3, it is the working process schematic diagram of vehicle anti-rear collision collision warning device of the present utility model.Now the working process of vehicle anti-rear collision collision warning device of the present utility model is described as follows:
When vehicle is to overtake time, millimeter wave radar is surveyed the running data of front vehicles in real time, and the running data of above-mentioned front vehicles comprises: the relative angle between the distance between front vehicles and this vehicle, front vehicles and this vehicle and the relative velocity between front vehicles and this vehicle.
In the utility model embodiment, the frequency of millimeter wave radar is 10Hz, when millimeter wave radar detects dead ahead and has vehicle, judging whether to align front vehicles locks, that is: judge whether to meet following three conditions: 1) millimeter wave radar detects dead ahead vehicle continuous ten times, 2) variation range of the relative angle between corresponding interior front vehicles of time period (referring to that millimeter wave radar detects the time period of dead ahead vehicle for continuous ten times) and this vehicle is in ± 5 °, 3) variation range of the relative velocity between corresponding interior front vehicles of time period (referring to that millimeter wave radar detects the time period of dead ahead vehicle for continuous ten times) and this vehicle is within 5m/s.If meet above these three conditions, millimeter wave radar aligns front vehicles and locks, now, millimeter wave radar is sent to data processing unit by locking signal, data processing unit sends voice message control signal to voice cue module, voice cue module, after receiving voice message control signal, is sent apart from count off voice message to chaufeur.
Chaufeur, after hearing apart from count off voice message, successively repeatedly carries out voice counting (as 150m, 100m, 80m with regard to following distance ...), the above-mentioned following distance distance between front vehicles and this vehicle of making a comment or criticism; Sound identification module, according to the content of the each voice counting of chaufeur, draws the following distance of the each judgement of chaufeur; Then the following distance of the each judgement of chaufeur is sent to data processing unit.
The following distance that data processing unit is surveyed the following distance of the each judgement of chaufeur and synchronization millimeter wave radar carries out size relatively, according to big or small comparative result, to proofreading and correct with car alarm threshold value, draws and follows car alarm threshold value after correction; Be described as follows:
In data processing unit, according to the following distance of n judgement before chaufeur, calculate with car alarm threshold value coefficient of correction
Wherein, L'
ifor the following distance of the i time judgement of chaufeur, when data processing unit is at the following distance L' that receives the i time judgement of chaufeur
itime, the following distance that the millimeter wave radar receiving is surveyed is L
i; N is greater than 1 natural number, for example n=10.
After the following distance of data processing unit n judgement before receiving, the following distance L' to the j time judgement of chaufeur
jfollowing distance L with the detection of synchronization millimeter wave radar
jcarry out size relatively; J>=n.
If the following distance L' of the j time judgement of chaufeur
jfollowing distance L with the detection of synchronization millimeter wave radar
jequate, after proofreading and correct with car alarm threshold value D
w' with proofread and correct before with car alarm threshold value D
wequate (maintain before correction with car alarm threshold value D
w); Like this, for chaufeur, can not extract and report to the police or postpone and reporting to the police, can not cause mistake police and false dismissal yet.
If the following distance L' of the j time judgement of chaufeur
jbe less than the following distance L that synchronization millimeter wave radar is surveyed
j, after proofreading and correct with car alarm threshold value D'
wfor:
its principle is as follows: the following distance L' of the j time judgement of chaufeur
jbe less than the following distance L that synchronization millimeter wave radar is surveyed
jtime, just there will be following situation: when chaufeur judges that two spacings (being this car and dead ahead vehicle) are while following car danger range, traditional vehicle anti-rear collision collision warning device judges that two spacings are for following car safety distance; At this moment traditional vehicle anti-rear collision collision warning device just shows as false dismissal to chaufeur.So in the utility model embodiment, consider the Distance Judgment characteristic of chaufeur, should increase former alarm threshold value D
w, give warning in advance, reduce the false dismissal number of times for chaufeur.
If the following distance L' of the j time judgement of chaufeur
jbe greater than the following distance L that synchronization millimeter wave radar is surveyed
j, after proofreading and correct with car alarm threshold value D'
wfor:
its principle is as follows: the following distance L' of the j time judgement of chaufeur
jbe greater than the following distance L that synchronization millimeter wave radar is surveyed
jtime, just there will be following situation: when chaufeur judges that two spacings (being this car and dead ahead vehicle) are in the time of following car safety distance, traditional vehicle anti-rear collision collision warning device judges that two spacings are for following car danger range; At this moment traditional vehicle anti-rear collision collision warning device just shows as mistake police to chaufeur.So in the utility model embodiment, consider the Distance Judgment characteristic of chaufeur, should reduce former alarm threshold value D
w, give warning in advance, reduce the alert number of times of the mistake of chaufeur.
It is evident that, if millimeter wave radar does not detect dead ahead vehicle after starting working, after proofreading and correct with car alarm threshold value D'
wwith proofread and correct before with car alarm threshold value D
wequate (maintain before correction with car alarm threshold value D
w), at this moment, vehicle anti-rear collision collision warning device in fact of the present utility model is not started working.
After correction with car alarm threshold value D'
wcan show intuitively by table 1:
Table 1 prediction policy
The essence of proofreading and correct with car alarm threshold value as from the foregoing, is exactly to determine the corresponding new alarm threshold value of strategy of reporting to the police according to the absolute error limit of steerman judging distance.
Data processing unit according to after proofreading and correct with car alarm threshold value, control annunciator and report to the police.
In sum, the utility model is mainly by the study to chaufeur Distance Judgment characteristic, merge chaufeur Distance Judgment characteristic and select suitable prediction policy, effectively reduce mistake police and the false dismissal of the anti-early warning collision system that knocks into the back, promote the precise and high efficiency of rear-end collision prevention early warning system.Be particularly suitable for that same vehicle is driven by different steermans or same steerman is driven under different mental and physical, can realize early warning accurately and efficiently.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (3)
1. a vehicle anti-rear collision collision warning device, comprise annunciator, it is characterized in that, also comprise: data processing unit, be arranged on the voice cue module on driver's operation platform, the millimeter wave radar that is arranged on the sound identification module on driver's operation platform and surveys for aligning front vehicles, described millimeter wave radar is fixed on the center of chaufeur place vehicle front bumper/spoiler;
The input end of described data processing unit is electrically connected to respectively the mouth of sound identification module and the mouth of millimeter wave radar; The mouth of described data processing unit is electrically connected to respectively described voice cue module and annunciator.
2. a kind of vehicle anti-rear collision collision warning device as claimed in claim 1, is characterized in that, described voice cue module adopts the TF040 type One Time Programmable speech chip of QT brand; The model of described sound identification module is WS-017GM11A550; Described millimeter wave radar adopts the ESR-millimeter wave radar of Delphi company.
3. a kind of vehicle anti-rear collision collision warning device as claimed in claim 1, is characterized in that, described data processing unit is microprocessor, micro controller system or arm processor; Described annunciator is loud speaker or indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049010.XU CN203864558U (en) | 2014-01-24 | 2014-01-24 | Car rear-end collision prevention alarming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049010.XU CN203864558U (en) | 2014-01-24 | 2014-01-24 | Car rear-end collision prevention alarming device |
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| CN203864558U true CN203864558U (en) | 2014-10-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786642A (en) * | 2014-01-24 | 2014-05-14 | 长安大学 | Pre-warning device protecting vehicles against rear-end collisions and pre-warning method |
| CN104627105A (en) * | 2015-03-05 | 2015-05-20 | 江苏新安电器有限公司 | Event-driven-based anti-collision device and event-driven-based anti-collision method for automobile |
| CN107351785A (en) * | 2017-07-12 | 2017-11-17 | 奇瑞汽车股份有限公司 | Vehicle-periphery sensory perceptual system |
| CN108205144A (en) * | 2018-03-28 | 2018-06-26 | 李强 | A kind of road work vehicle collision prewarning device, road work vehicle and anti-collision warning method |
| CN108928294A (en) * | 2018-06-04 | 2018-12-04 | Oppo（重庆）智能科技有限公司 | Driving dangerous based reminding method, device, terminal and computer readable storage medium |
-
2014
- 2014-01-24 CN CN201420049010.XU patent/CN203864558U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786642A (en) * | 2014-01-24 | 2014-05-14 | 长安大学 | Pre-warning device protecting vehicles against rear-end collisions and pre-warning method |
| CN104627105A (en) * | 2015-03-05 | 2015-05-20 | 江苏新安电器有限公司 | Event-driven-based anti-collision device and event-driven-based anti-collision method for automobile |
| CN104627105B (en) * | 2015-03-05 | 2017-03-01 | 江苏新安电器有限公司 | One kind is based on event driven anti-collision device for automobile and method |
| CN107351785A (en) * | 2017-07-12 | 2017-11-17 | 奇瑞汽车股份有限公司 | Vehicle-periphery sensory perceptual system |
| CN108205144A (en) * | 2018-03-28 | 2018-06-26 | 李强 | A kind of road work vehicle collision prewarning device, road work vehicle and anti-collision warning method |
| CN108928294A (en) * | 2018-06-04 | 2018-12-04 | Oppo（重庆）智能科技有限公司 | Driving dangerous based reminding method, device, terminal and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20160124 |
|
| EXPY | Termination of patent right or utility model |