CN1810548A - Logic discriminant of intelligent collision recognizing system for automobile - Google Patents
Logic discriminant of intelligent collision recognizing system for automobile Download PDFInfo
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- CN1810548A CN1810548A CN 200510031189 CN200510031189A CN1810548A CN 1810548 A CN1810548 A CN 1810548A CN 200510031189 CN200510031189 CN 200510031189 CN 200510031189 A CN200510031189 A CN 200510031189A CN 1810548 A CN1810548 A CN 1810548A
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- automobile
- recognizing system
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- signal
- intelligent collision
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Abstract
The logic discriminant of intelligent collision recognizing system for automobile is one scientific and practical inner calculation formula and makes intelligent collision recognizing system for automobile reliable, adoptive and economic. The logic discriminant T<SUB>K</SUB><=S<SUB>tK</SUB>/V<SUB>tK</SUB> is built in intelligent collision recognizing system for automobile as the algorithm software, with several time constants, T1, T2, T3, etc, as signal thresholds. During the running of automobile, the intelligent collision recognizing system searches and captures the positions and state of the moving and static matters in front and performs automatic speed measurement, automatic ranging and logic discrimination, and in emergency, command is sent to the driver or the anti-collision execution mechanism timely for proper treatment to avoid collision and reduce collision loss.
Description
Technical field
The present invention relates to a kind of being set in the intelligent collision recognizing system for automobile (or claiming collision avoidance radar), employed a kind of logic discriminant is judged in unsafe condition identification in the driving.
Background technology
Along with the high speed development of automobile industry, traffic safety has become the emphasis that the whole society gazes at.Improving the traffic safety reliability and avoid the personnel's of driving human element to greatest extent and collision case that influence such as road surface accident causes, is the key subjects that world today's auto trade and social very concern, technical field must be given prominence to solution.
Intelligent collision recognizing system for automobile is and one of matching used specific technique combination of " machinery let out can formula automobile collision protection device ", " cut press let out can formula automobile collision protection device ", " automobile collision preventing swing type mechanism ", " anti-collision enmergency braking device for motor car " (above all have specific technique); Intelligent collision recognizing system for automobile is detection, identification, judgement, command echelon, and all the other all are actuating units.The invention of above technical combinations and application substantially comprehensively, have systematically solved passive, the active safety anticollision problem of automobile, thereby provide the basic fundamental guarantee for reducing motor traffic accidents to the injury and the loss of human life's property.
There is a pair of contradiction in intelligent collision recognizing system for automobile on the designing requirement index: promptly give automobile and chaufeur time enough in danger the time, require to report to the police and stopping distance long as far as possible; In order to reduce the false-alarm misoperation, reduce unnecessary information processing capacity simultaneously, require the alarm, brake distance short as far as possible again.The method that the present invention sets warning and braking constant by the particular case that runs into according to different automobile types has successfully solved this contradiction and a difficult problem, thereby make intelligent collision recognizing system for automobile in logical design, more become reasonable and practical, for the actual use of automobile collision avoidance radar input provides the logical design foundation.
Summary of the invention
The objective of the invention is to provide the logic discriminant of science practicality, realize reliability, applicability, the economy of intelligent collision recognizing system for automobile for the design of intelligent collision recognizing system for automobile (as microwave radar etc.).The expression formula of this logic discriminant is:
T
K≤S
tK/V
tK
T
KSend the time constant (dissolving the dangerous essential time, unit: second, millisecond) of signal;
S
TKAutomobile and objects in front instant relative distance (unit: rice, decimetre) between the two;
V
TKAutomobile and objects in front between the two instant relative velocity (unit: meter per second, decimetre/millisecond) and return fixed both draw close value gradually into "+", both leave the value into "-" gradually.System carries out grid to "-" value and removes in computing.
The objective of the invention is to realize in the following way: logic discriminant (computing formula) is arranged in the intelligent collision recognizing system for automobile, and in the mode (can make amendment or rearrange according to actual condition of service) of programming several time constants of sending signal (signal gate grid) is set; For example: set T
1Be the early warning signal time constant, the time is 750 milliseconds; T
2Be automatic emergency brake, auto shut down signal time constant, the time is 450 milliseconds.When automobile and objects in front instant relative velocity between the two are "+" 22.22 meter per seconds (80 kilometers/hour), in the time of can determining that by logic discriminant system sends early warning signal, automatic emergency brake and auto shut down signal automobile respectively with objects in front instant relative distance between the two.
With data substitution logic discriminant:
T
1＝S
t1/V
t1
S
T1=T
1* V
T1=0.75 second * 22.22 meter per second=16.67 meter (instant relative distance during early warning signal)
T
2＝S
t2/V
t2
S
T2=T
2* V
T2=0.45 second * 22.22 meter per second=10 meter (instant relative distance when automatic emergency brake, auto shut down signal)
When above-mentioned automobile and objects in front between the two both the time relative velocity when becoming "+" 41.67 meter per seconds (150 kilometers/hour), automobile with objects in front instant relative distance between the two was respectively when system sent early warning signal, automatic emergency brake and auto shut down signal:
S
T1=T
1* V
T1=0.75 second * 41.67 meter per second=31.25 meter (the instant relative distance during early warning signal);
S
T2=T
2* V
T2=0.45 second * 41.67 meter per second=18.75 meter (the instant relative distance when automatic emergency brake, auto shut down signal).
According to logic discriminant as can be known: automobile and the instant relative distance of objects in front were directly proportional with between the two instant relative velocity when system sent signal, but time constant is constant.That is to say logic discriminant be by these signal gate grid of period constant (logical relation satisfy to set condition the time give a signal and guarantee the personnel that drive after signal sends or the required control execution time of automobile collision preventing actuating unit to vehicle) send reasonable instruction and reach to prevent to collide and take place or significantly alleviate the purpose of collision damage.
Intelligent collision recognizing system for automobile logic built discriminant and possess automatically test the speed, under the automatic ranging functional conditions, also with the speed of a motor vehicle interlocking of automobile self; Promptly when travelling, logic discriminant is not played a role at low speed (as 30 kilometers/hour and following, concrete spacing adjustable-speed).Like this, automobile start that stop in row, berth, queuing is gone slowly and state such as low speed turning under (even if with the objects in front close proximity, but possibility of collision, dangerous minimum) intelligent collision recognizing system can not send any signal, to avoid the actuating unit misoperation.
The present invention has following beneficial effect:
1,, realizes the Combination properties such as reliability, applicability, economy of intelligent collision recognizing system for automobile for intelligent collision recognizing system for automobile (or claim collision avoidance radar) provides science, the most reasonable, the easiest, the most suitable logic determines formula.
2, for vehicle that intelligent collision recognizing system for automobile is housed in driving to the place ahead in the same way or reverse driving, the pedestrian that the speed speed differs, the location status of vehicle are made whether dangerous accurate judgement, can guarantee not mistaking signal of system, also guarantee the accuracy of institute's give a signal.
3, vehicle that intelligent collision recognizing system for automobile is housed is become again former road or can be guaranteed not mistaking signal of system by (distance of two cars is generally all very near in such cases) under the situation of overtaking other vehicles abandoning overtaking other vehicles; Because in such cases two cars both the time relative velocity be "-" value, system can mechanical grate removes.
4,, the head-on crash in the driving, side collision, rear-end impact, thrust into, hit hazard event such as thing the traffic safety that doctor's amplitude reduces, society very pays close attention to will be realized breakthrough change when exercising vehicle on road when all being equipped with supporting intelligent collision recognizing system for automobile of the present invention and crashproof actuating unit.
The specific embodiment:
Logic discriminant T
K=S
TK/ V
TKBe built in intelligent collision recognizing system for automobile, become the computing formula software in the system and several time constants (T is set
1, T
2, T
3Deng) the signal gate grid, it is dynamic or static that the place ahead is searched for, captured to automobile by intelligent identifying system when driving, in the same way or the present position state of reverse object and by system test the speed automatically, automatic ranging and logic discrimination, carry out grid and remove not being in dangerous state; Then person for driving a car or crashproof actuating unit are sent instruction to being in dangerous state, in time take measures or in time take the mode of automatic deceleration, self-actuating brake, auto shut down to prevent that effectively collision from taking place or significantly alleviate collision damage by the crashproof actuating unit of system's automatic guidance by the person for driving a car according to its degree.
Claims (2)
1, the logic discriminant of a kind of intelligent collision recognizing system for automobile (or claiming collision avoidance radar), it is characterized in that, logic discriminant (being program software) is built in the intelligent collision recognizing system for automobile that possesses self-measuring automobile and instant relative velocity of objects in front and instant relative distance, and its expression formula is:
T
K≤S
tK/V
tK
T
KSend the time constant (dissolving the dangerous essential time, unit: second, millisecond) of signal;
S
TKAutomobile and objects in front instant relative distance (unit: rice, decimetre) between the two;
V
TKAutomobile and objects in front between the two instant relative velocity (unit: rice-1-/second, decimetre/millisecond) and return fixed both draw close value gradually into "+", both leave the value into "-" gradually; System carries out grid to "-" value and removes in computing;
Logic discriminant (computing formula) is arranged in the intelligent collision recognizing system for automobile, and in the mode of programming several time constants of sending signal (signal gate grid T1, T2, T3 etc.) is set; Accurately reserve the reaction time by these signal gate grid of period constant, thereby (logical relation satisfies when imposing a condition to realize preventing to collide the purpose of generation, intelligent collision recognizing system for automobile is a give a signal, and guarantees to send to set aside some time behind the signal and just in time satisfy the required time of the personnel that drive or automobile collision preventing actuating unit action).
2, logic discriminant of intelligent collision recognizing system for automobile according to claim 1
T
K≤S
tK/V
tK
Add positive and negative constant (as T on the both sides of differentiating expression formula
K≤ S
TK/ V
TK+ 1) etc. the phraseology of variation does not all influence its essence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510031189 CN1810548A (en) | 2005-01-25 | 2005-01-25 | Logic discriminant of intelligent collision recognizing system for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510031189 CN1810548A (en) | 2005-01-25 | 2005-01-25 | Logic discriminant of intelligent collision recognizing system for automobile |
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| Publication Number | Publication Date |
|---|---|
| CN1810548A true CN1810548A (en) | 2006-08-02 |
Family
ID=36843713
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510031189 Pending CN1810548A (en) | 2005-01-25 | 2005-01-25 | Logic discriminant of intelligent collision recognizing system for automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435993A (en) * | 2011-11-30 | 2012-05-02 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted radar system and detection method thereof |
| CN103303239A (en) * | 2013-06-07 | 2013-09-18 | 浙江吉利汽车研究院有限公司杭州分公司 | Anti-collision control device and method |
-
2005
- 2005-01-25 CN CN 200510031189 patent/CN1810548A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435993A (en) * | 2011-11-30 | 2012-05-02 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted radar system and detection method thereof |
| CN103303239A (en) * | 2013-06-07 | 2013-09-18 | 浙江吉利汽车研究院有限公司杭州分公司 | Anti-collision control device and method |
| CN103303239B (en) * | 2013-06-07 | 2016-06-15 | 浙江吉利汽车研究院有限公司杭州分公司 | anti-collision control device and method |
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