CN1579842A - Automobile end-collision warning apparatus - Google Patents
Automobile end-collision warning apparatus Download PDFInfo
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- CN1579842A CN1579842A CN 03153481 CN03153481A CN1579842A CN 1579842 A CN1579842 A CN 1579842A CN 03153481 CN03153481 CN 03153481 CN 03153481 A CN03153481 A CN 03153481A CN 1579842 A CN1579842 A CN 1579842A
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Abstract
The invention of early-warning equipment for car pursuing tail, it includes detecting distance equipment, central processing unit, car-speed sensor, early-warning display equipment, the signal output port of early-warning equipment and car-speed sensor are connected to the input port of the central processing unit, the output port of the central processing unit is connected to the input port of the early-warning display equipment. It also includes quick decrease speed sensor and hand switch, the output port of the quick decrease speed sensor and hand switch are connected to the input port of the early-warning display equipment. The early-warning time K=S/V, the V means the vehicle speed, the S means the security distance when this vehicle on the speed of V; the early-warning tine K=2.5-3.5 second. The invention can make drivers avoid or decrease the pursuing tail during the automobile running.
Description
Technical field
The present invention relates to a kind of auto-safety mechanism, particularly the rear-end collision prior-warning device.
Background technology
Develop rapidly along with industry, highway construction especially expressway construction is advanced by leaps and bounds especially, the increase of automobile quantity and the quickening of car speed, caused the increase of traffic accident, especially express highway rear-end collision and rear-end collision accident have generation more, have caused great loss for life and property.Therefore, countries in the world are all avoiding and reducing traffic accident, especially continuity, scale rear-end collision as the common heat subject of paying close attention to.Rear-end collision accounts for cooresponding ratio in the traffic accident, and is the casualties and economic loss maximum, so how to avoid and reduce rear-end collision that its important meaning is arranged.The formation reason of rear-end collision generally is concerning mal and cause between two car relative distances and the speed of operation, that is: too fast when speed of operation, and the distance between two cars is too hour, owing to the driver in time control vehicle rear-end collision takes place.In existing automobile, still do not have the rear-end collision prior-warning device of informing the driver in advance, but the rear-end collision prior-warning device is for driver, driver that particularly newly set out on a journey or long-distance fatigue driving, for fear of rear-end collision is in demand.
Content of the present invention
The purpose of this invention is to provide a kind of rear-end collision prior-warning device, make the driver in vehicle drive, avoid or reduce the generation rear-end collision.
The objective of the invention is to realize by following technical scheme.Rear-end collision prior-warning device of the present invention is characterized in that:
It comprises macrometer, central process unit, car speed sensor, early warning telltale, the signal output part of described macrometer, car speed sensor links to each other with the signal input part of described central process unit, and the signal output part of described central process unit links to each other with the signal input part of described early warning telltale.
Also comprise anxious deceleration sensor and hand switch, the signal output part of described anxious deceleration sensor and hand switch all links to each other with the signal input part of described early warning telltale.
Also comprise sounder and read-out, the receiving end of described sounder and read-out links to each other with the mouth of described central process unit respectively.
The pre-warning time K=S/V that adopts, wherein
V is this vehicle speed,
S is when this vehicle speed is V, the safety distance between Ben Che and the front truck,
Described pre-warning time K=2.5-3.5 second, with K=3 second for well.
Rear-end collision prior-warning device of the present invention is a kind of dynamic vehicle security drive auxiliary device, under the situation of not changing former car circuit, oil circuit and brake system, this device is installed.The distance that can detect front vehicles or obstacle behind this device by preposition macrometer automatically is installed; By this car car speed sensor detect travel in the speed of this car; The quantitative data input that macrometer and car speed sensor are recorded compares to central process unit, carry out digital processing, whether remain in the safe range and travel to differentiate this car with front truck, if the ratio K of the spacing and the speed of a motor vehicle is not within safe range, central process unit can send early warning sound from trend driver and front vehicle, optical signal, automatically prompting driver and the place ahead target keep a safe distance or control this vehicle speed in good time, avoided this car may knock into the back to front vehicles, avoided front vehicle may knock into the back again to this car, when particularly driver's long-distance running and fatigue driving or driver are new hand, it are carried out in good time prompting seem and be even more important.Therefore, this device is the useful tool that prevents and reduce rear-end collision.The ratio K of the spacing and the speed of a motor vehicle also can be described as pre-warning time, can set in advance, and pre-warning time K=S/V, in the formula:
K---pre-warning time (second)
S---the relative distance (rice) between two cars;
V---this car speed (meter per second) of travelling
Wherein: S=S1+S2+S3
The instant speed of a motor vehicle of S1---driver's reaction distance (rice)=driver reaction time * this car
S2---braking distance (rice)
Safety strap (rice) is reserved in S3---two workshops
| This vehicle speed V (Km/h) | Second fast m/s | Relative distance S (rice) | Pre-warning time | |||
| 2.5 seconds reaction distance S1 (rice) of driver | Braking distance S2 (rice) | Safety strap S3 (rice) is reserved in two workshops | S (rice) | K (second) | ||
| ????120 | ??33.3 | ?????83.3 | ????16 | ????1 | ??100.3 | ???3.01 |
| ????100 | ??27.7 | ?????69.2 | ????12 | ????0.8 | ??82 | ???2.96 |
| ????80 | ??22.2 | ?????55.6 | ????10 | ????0.6 | ??66.2 | ???2.98 |
| ????60 | ??16.7 | ?????41.8 | ????8 | ????0.5 | ??50.3 | ???3.01 |
| ????40 | ??11.1 | ?????27.75 | ????6 | ????0.5 | ??34.3 | ???3.09 |
Can find out that from following formula pre-warning time K is directly proportional with relative distance S between two cars, V is inversely proportional to this vehicle speed, that is to say, this car speed V that travels is big more, and two following distance S just should be big more; And two following distance S are more little, and then this car vehicle velocity V should be more little.
According to contriver's experimental study for many years, the driver generally can normally control driving in 2.5 seconds reaction time, and therefore under the different speed of a motor vehicle, S1, S2 are different, see Table 1.
As when V is 33.3M/S, S1 is 83.3M/S, and S2 is 16M, and S3 is 1M, and S is 100.3M, and pre-warning time K is 3.01 seconds;
As when V is 16.7M/S, S1 is 41.8M/S, and S2 is 10M, and S3 is 0.5M, and S is 50.3M, and pre-warning time K is 3.01 seconds;
And for example when V was 2.8M/S, S1 was 7M/S, and S2 is 1M, and S3 is 0.5M, and S is 8.5M, and pre-warning time K is 3.04 seconds.
Show that from table 1 pre-warning time K almost is a constant.Setting K is 2.5-3.5 second.But value 3, K value be greater than 3 for safety traffic, less than 3 o'clock be alarm, after the driver finds sound and light alarm, can take measures, underspeed, widen distance, the K value is remained on more than 3.
Central process unit is a host computer system.
The automatic ranging device is an independently ranging system, and is transferred to central process unit with digital information.
The car speed sensor function is to measure the moving velocity of vehicle self, and the information that vehicle mechanical is rotated converts digital information transmission to central process unit by the optoelectronic induction signal.
The function of caution system (early warning telltale, sounder and read-out) is the information that central process unit is determined, and shows by telltale or sound, light with early warning signal, in time reports to the police to driver and front vehicle.
Acceleration pick-up, is reported to the police when blowing out, turning over anxious deceleration that ditch, off-axis etc. cause to the vehicle accident in travelling, and when accident was removed the back vehicle and restarted, alerting signal can automatically terminate.Manually opened, automatically terminate function
When the vehicle in travelling needed temporary term stop, as overhauling, adding water, rest etc., available hand switch started warning light, then automatically terminated caution when vehicle launch recovers cruising.
In sum, rear-end collision prior-warning device of the present invention hit before both can having prevented, can warn the rear again, hit after preventing, the dangerous situation automatic early-warning occurred, in time reminded the driver to adopt an effective measure, and the vehicle in travelling is remained in the safe distance.Rear-end collision prior-warning device of the present invention is easy for installation, need not change any circuit of former car, and oil circuit and brake system as long as a cover accessory equipment is installed, do not change all electromechanical properties on former car.
Rear-end collision prior-warning device of the present invention can make the driver in vehicle drive, avoids or reduces the generation rear-end collision.
Description of drawings
Fig. 1 is a control block diagram of the present invention.
Embodiment
As Fig. 1, rear-end collision prior-warning device of the present invention comprises macrometer 1, central process unit 2, car speed sensor 3, early warning telltale 4, the signal output part of macrometer 1, car speed sensor 3 links to each other with the signal input part of central process unit 2, and the signal output part of central process unit 2 links to each other with the signal input part of early warning telltale 4.
The present invention also comprises anxious deceleration sensor 8, manually opened switch 10, and the signal output part of anxious deceleration sensor 8 links to each other with the signal input part of early warning telltale 4, and manually opened switch 10 links to each other with the signal input part of early warning telltale 4.
Also comprise sounder 5 and read-out 6, the receiving end of sounder 5 and read-out 6 links to each other with the signal output part of central process unit 2 respectively.In the present embodiment, macrometer 1 requires to measure effectively the target in 100 meters scopes, all-weather service, and can guarantee very strong mist transmitting performance.The diffusingsurface diameter of requirement at 200 meters is no more than 0.5 meter, and central process unit 2 adopts 16 micro controller systems; Early warning telltale 4 can be used the warning lamp of automobile tail or the warning lamp of installing in addition, and the lamp colr of employing is a yellow signal, and strobe rate is 3HZ (per minute 180 times), can use the two flashing lights or the special LED warning light of this car.Sounder 5 is loaded on outside the car, and read-out 6 is loaded on Che Nei driver and easily sees part;
The pre-warning time K=S/V that adopts, wherein
This vehicle speed of V,
When S is V at this vehicle speed, the safety distance between Ben Che and the front truck,
Pre-warning time K=2.5-3.5 second, adopt K=3 second.
Before vehicle ', earlier the K value of setting is input in the central process unit 2, when vehicle ', the driver can be from the early warning telltale 4 observation early warning situations that are positioned at operator's compartment, this moment, macrometer 1 and car speed sensor 3 constantly were sent to data central process unit 2, and central process unit 2 is through computing, comparison, when the actual K value that draws during greater than the K value of setting, then do not have reflection, traffic safety is described; As the actual K that draws during less than the K value set, reflection is then arranged, for example central process unit 2 sends instruction to early warning telltale 4, sounder 5 is sounded and read-out 6 shows change color, to carry out early warning.Vehicle accident in travelling makes as blowing out, turn over ditch, off-axis that vehicle is anxious to slow down, and die-offs 20 kilometers the time as speed per hour in a second, then auto alarm.Accident is removed the back vehicle and is restarted, and alerting signal then automatically terminates.Other expansion interfaces 7 also can be housed, so that high-mobility, multipurpose, wheeled vehicle.
When the vehicle in travelling needs temporary term stop,, then start early warning telltales 4 (being warning light), when vehicle launch recovers cruising, automatically terminate caution with hand switch 10 as overhauling, add water, rest etc.
Claims (6)
1, the car prior-warning device that knocks into the back is characterized in that:
It comprises macrometer (1), central process unit (2), car speed sensor (3), early warning telltale (4), the signal output part of described macrometer (1), car speed sensor (3) links to each other with the signal input part of described central process unit (2), and the signal output part of described central process unit (2) links to each other with the signal input part of described early warning telltale (4).
2, according to the described rear-end collision prior-warning device of claim 1, it is characterized in that: also comprise anxious deceleration sensor (8) and hand switch (10), the signal output part of described anxious deceleration sensor (8) and hand switch (10) all links to each other with the signal input part of described early warning telltale (4).
3, rear-end collision prior-warning device according to claim 1 and 2 is characterized in that: also comprise sounder (5) and read-out (6), the receiving end of described sounder (5) and read-out (6) links to each other with the mouth of described central process unit (2) respectively.
4, rear-end collision prior-warning device according to claim 3 is characterized in that: the pre-warning time K=S/V of employing, and wherein V is this vehicle speed, S is when this vehicle speed is V, the safety distance between Ben Che and the front truck,
5, rear-end collision prior-warning device according to claim 4 is characterized in that: described pre-warning time K=2.5-3.5 second.
6, rear-end collision prior-warning device according to claim 5 is characterized in that: described pre-warning time K=3 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153481 CN1579842A (en) | 2003-08-14 | 2003-08-14 | Automobile end-collision warning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153481 CN1579842A (en) | 2003-08-14 | 2003-08-14 | Automobile end-collision warning apparatus |
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| CN1579842A true CN1579842A (en) | 2005-02-16 |
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| CN 03153481 Pending CN1579842A (en) | 2003-08-14 | 2003-08-14 | Automobile end-collision warning apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416897A (en) * | 2011-10-27 | 2012-04-18 | 上海市七宝中学 | Vehicle running safety warning system and warning method |
| CN103477378A (en) * | 2011-04-26 | 2013-12-25 | 丰田自动车株式会社 | Driving assistance device |
| CN104786934A (en) * | 2015-03-18 | 2015-07-22 | 绵阳奥利斯机电科技有限公司 | Vehicle driving data management system and realization method |
| CN105644425A (en) * | 2015-12-25 | 2016-06-08 | 上海电力学院 | Automobile safety alarm system |
| CN106114480A (en) * | 2016-06-29 | 2016-11-16 | 成都生辉电子科技有限公司 | A kind of automobile safety control method based on two-way range rate measurement |
| CN113147625A (en) * | 2021-03-31 | 2021-07-23 | 浙江吉利控股集团有限公司 | Vehicle axle breakage risk detection method and device, vehicle and readable storage medium |
-
2003
- 2003-08-14 CN CN 03153481 patent/CN1579842A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477378A (en) * | 2011-04-26 | 2013-12-25 | 丰田自动车株式会社 | Driving assistance device |
| CN103477378B (en) * | 2011-04-26 | 2016-10-12 | 丰田自动车株式会社 | Drive assistance device |
| CN102416897A (en) * | 2011-10-27 | 2012-04-18 | 上海市七宝中学 | Vehicle running safety warning system and warning method |
| CN104786934A (en) * | 2015-03-18 | 2015-07-22 | 绵阳奥利斯机电科技有限公司 | Vehicle driving data management system and realization method |
| CN105644425A (en) * | 2015-12-25 | 2016-06-08 | 上海电力学院 | Automobile safety alarm system |
| CN106114480A (en) * | 2016-06-29 | 2016-11-16 | 成都生辉电子科技有限公司 | A kind of automobile safety control method based on two-way range rate measurement |
| CN113147625A (en) * | 2021-03-31 | 2021-07-23 | 浙江吉利控股集团有限公司 | Vehicle axle breakage risk detection method and device, vehicle and readable storage medium |
| CN113147625B (en) * | 2021-03-31 | 2022-12-09 | 浙江吉利控股集团有限公司 | Vehicle axle breakage risk detection method and device, vehicle and readable storage medium |
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