CN106671921A - Collision detecting method and device for automobile - Google Patents

Collision detecting method and device for automobile Download PDF

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Publication number
CN106671921A
CN106671921A CN201510761177.8A CN201510761177A CN106671921A CN 106671921 A CN106671921 A CN 106671921A CN 201510761177 A CN201510761177 A CN 201510761177A CN 106671921 A CN106671921 A CN 106671921A
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China
Prior art keywords
automobile
collision
axis
severity
value
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CN201510761177.8A
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Chinese (zh)
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CN106671921B (en
Inventor
王国栋
刘凯
郝飞
邱铭杰
陈克清
于钦
张仁烨
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SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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Priority to CN201510761177.8A priority Critical patent/CN106671921B/en
Publication of CN106671921A publication Critical patent/CN106671921A/en
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Publication of CN106671921B publication Critical patent/CN106671921B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204Actuation parameters of safety arrangents
    • B60R2021/01211Expansion of air bags

Abstract

The invention provides a collision detecting method and device for an automobile. The collision detecting method comprises the following steps of step A, monitoring whether a safety airbag of the automobile is burst or not in real time and detecting an acceleration value of a vehicle-mounted acceleration sensor of the automobile in real time; step B, judging the collision severity degree of the automobile according to whether the safety airbag of the automobile is burst or not and the acceleration value of the automobile; and step C, triggering response operations corresponding to the collision severity degrees according to different collision severity degrees. The corresponding operations comprise triggering emergency rescue service and enabling a user to select whether a common rescue service is triggered or not. The collision detecting method and device for the automobile are advantaged in that the application limitation of the scheme of the embodiment is small; the scheme can cover detection of multiple collision situations of the automobile; the reliability of the scheme is high; the targeted performance of the rescue service can be high; in addition, the scheme has perfect actual application significance in judging the automobile collision degree.

Description

The collision checking method and device of automobile
Technical field
The present invention relates to roadside assistance field, the collision checking method and device of more particularly to a kind of automobile.
Background technology
With the continuous improvement of living standard, automobile quantity is continuously increased, and at the same time, road conditions also become Become increasingly complex.The quantity that automobile occurs vehicle accident steeply rises, especially when jeopardizing personal peace Full vehicle accident, such as collision, rollover, passengers inside the car often lose self-saving ability because of injury, too late When impose rescue mission and make party lose optimal rescue time, cause serious consequence.Additionally, by automobile The public transport congestion that failure causes also becomes a kind of social problem that can not be ignored.
Electronic security(ELSEC) air bag (Electronic Control of Safety Airbag), abbreviation air bag is A kind of passive safety protection device, generally uses cooperatively with automobile safety seat belt in automobile, can be with Effective Anti-bumping protection is provided for passenger.In the prior art, the collision detection majority of automobile adopts SDM (Sensing Diagnostics Module, sensing diagnostic module) judges whether the air bag of automobile pops To judge whether automobile collides, the method only occurs severe crash to automobile causes air bag to pop Situation, the limitation of application is larger.Also exist in prior art a kind of based on 3-axis acceleration sensor Car crass detection method, the pickup value to detecting carries out computing by certain algorithm, leads to Cross and be compared to judge whether automobile collides by the value obtained by computing and default threshold value, but it is described It is poor for judging the algorithm practical application meaning whether automobile collides.
Therefore, the application limitation of the car crass detection method of prior art is larger and practical application meaning It is poor.
The content of the invention
Present invention solves the technical problem that be the car crass detection method of prior art application limitation compared with The big and poor problem of practical application meaning.
To solve above-mentioned technical problem, the embodiment of the present invention provides a kind of collision checking method of automobile, bag Include:
Step A, whether the air bag of automobile pops described in real-time monitoring, and automobile described in real-time detection Vehicle-mounted acceleration transducer accekeration;
Step B, judges according to whether the air bag of the automobile pops with the accekeration of the automobile The crash severity of the automobile;
Step C, according to different crash severities, triggers sound corresponding with the crash severity Should operate.
Optionally, step B includes:Step B1, if the air bag of the automobile pops, judges There is severe crash in the automobile.
Optionally, there is severe crash corresponding to the automobile, the response operation includes to cry for help automatically The service of helping.
Optionally, step B also includes:
Step B2, if the air bag of the automobile does not pop, according to the described vehicle-mounted acceleration for detecting The accekeration of sensor calculates crash severity quantized value;
Step B3, if the crash severity quantized value is more than or equal to default threshold value, judges the vapour There is slight impact in car;
Step B4, if the crash severity quantized value is less than the threshold value, judges that the automobile is not sent out Raw collision.
Optionally, step B4 also includes:If the crash severity quantized value is less than the threshold value, Determine whether that the automobile whether there is DTC;If existing, the response operation includes showing described DTC.
Optionally, step C includes:If the automobile does not collide, and has the DTC, The then response operation includes:Chosen whether to trigger common rescue service by user.
Optionally, there is slight impact corresponding to the automobile, the response operation includes that prompting user is It is no to ask rescue service.
Optionally, do not collide corresponding to the automobile, and the automobile storage is in DTC, the sound Should operate including whether prompting user will ask rescue service.
Optionally, the vehicle-mounted acceleration transducer is 3-axis acceleration sensor, and step B2 includes:
Step B21, at interval of the period 1 the once x-axis of the 3-axis acceleration sensor, y-axis are gathered With the accekeration of z-axis;
Step B22, at interval of the period 1, calculates once adding for the x-axis, y-axis and z-axis of the automobile Meansigma methodss of the velocity amplitude within second round, are denoted as respectivelyWithThe second round more than etc. In the period 1;
Step B23, determines the acceleration limits value of the x-axis, y-axis and z-axis of the automobile, is denoted as respectivelyWith
Step B24, it is flat according to the acceleration limits value and acceleration of the x-axis, y-axis and z-axis of the automobile Average, calculates the Severity index of the automobile;
Step B25, the automobile according to the Severity Index for Calculation of the automobile in the period 3 Crash severity quantized value, the period 3 be more than the period 1.
Optionally, step B24 includes:According to formulaCalculate the automobile Severity index.
Optionally, step B25 includes:By the order of severity of the automobile in the period 3 Crash severity quantized value of the maximum of assessment index as the automobile.
Optionally, step B25 includes:
The meansigma methodss of Severity index of the automobile in the period 3 are calculated as average Severity index;
The maximum of mean severity assessment index in the period 3 is calculated as the automobile Crash severity quantized value.
Optionally, after step C is performed, the collision checking method also includes:Step D, note Record the fault message of the automobile.
To solve above-mentioned technical problem, the embodiment of the present invention also provides a kind of collision detecting device of automobile, Including:
Whether safety detection unit, the air bag for being suitable to automobile described in real-time monitoring pops, and examines in real time Survey the accekeration of the vehicle-mounted acceleration transducer of the automobile;
Collision detection processing unit, couples the safety detection unit, is suitable to the safety according to the automobile Whether air bag pops judge the crash severity of the automobile with the accekeration of the automobile;
Operation trigger element, couples the collision detection processing unit, is suitable to serious according to different collisions Degree, triggers response operation corresponding with the crash severity.
Optionally, the collision detection processing unit includes:First judges subelement, if the automobile Air bag pops, and described first judges that subelement judges that the automobile occurs severe crash.
Optionally, there is severe crash corresponding to the automobile, the response operation includes to cry for help automatically The service of helping.
Optionally, the collision detection processing unit also includes:
Computation subunit, if the air bag of the automobile does not pop, the computation subunit is according to detection The accekeration of the automobile for arriving calculates crash severity quantized value;
Second judges subelement, if the crash severity quantized value is more than or equal to default threshold value, sentences There is slight impact in the fixed automobile;
3rd judges subelement, if the crash severity quantized value is less than the threshold value, judges described Automobile does not collide.
Optionally, if the crash severity quantized value is less than the threshold value, the described 3rd judges that son is single Unit further reads from electronic controller and judges that the automobile whether there is DTC;If existing, institute State operation trigger element triggering DTC display unit and show the DTC.
Optionally, if the automobile does not collide, and there is DTC, then the response operation includes: Chosen whether to trigger common rescue service by user.
Optionally, there is slight impact corresponding to the automobile, the response operation includes that prompting user is It is no to ask rescue service.
Optionally, do not collide corresponding to the automobile, and the automobile storage is in DTC, the sound Should operate including whether prompting user will ask rescue service.
Optionally, the vehicle-mounted acceleration transducer be 3-axis acceleration sensor, the computation subunit Including:
Acquisition module, be suitable at interval of the period 1 collection once the x-axis of the 3-axis acceleration sensor, The accekeration of y-axis and z-axis;
Mean value calculation module, is suitable to, at interval of the period 1, calculate the once x-axis of the automobile, y-axis Meansigma methodss with the accekeration of z-axis within second round, are denoted as respectivelyWithArrange described Second round is more than or equal to the period 1;
Acceleration limit value determining module, is adapted to determine that the acceleration of the x-axis, y-axis and z-axis of the automobile Limits value, is denoted as respectivelyWith
Severity Index for Calculation module, according to the acceleration of the x-axis, y-axis and z-axis of the automobile Limits value and acceleration meansigma methodss, calculate the Severity index of the automobile;
Crash severity quantized value computing module, comments according to the order of severity of the automobile in the period 3 Estimate the crash severity quantized value of automobile described in Index for Calculation, the period 3 is set more than described the One cycle.
Optionally, the Severity Index for Calculation module is suitable to according to formulaCalculate the Severity index of the automobile.
Optionally, the crash severity quantized value computing module is by the vapour in the period 3 Crash severity quantized value of the maximum of the Severity index of car as the automobile.
Optionally, the crash severity quantized value computing module calculates in the following way the collision Severity quantification value:
The meansigma methodss of Severity index of the automobile in the period 3 are calculated as average Severity index;
The maximum of mean severity assessment index in the period 3 is calculated as the automobile Crash severity quantized value.
Optionally, the collision detecting device also includes fault message recording unit, is suitable to record the vapour The fault message of car.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that:
In the scheme of the embodiment of the present invention, the collision checking method of automobile includes:Automobile described in real-time monitoring Air bag whether pop, and the accekeration of the vehicle-mounted acceleration transducer of automobile described in real-time detection; Whether pop judge touching for the automobile with the accekeration of the automobile according to the air bag of the automobile Hit the order of severity;According to different crash severities, sound corresponding with the crash severity is triggered Should operate.Whether the scheme of the embodiment of the present invention to the air bag of automobile by while pop and automobile Accekeration detected, dual judgement can be made to the collision situation of automobile;Collision scenario and When air bag pops, then more serious vehicle accident is there occurs;When collision scenario but substitute When capsule does not pop, only cannot effectively be judged by air bag, now using the accekeration of automobile The crash severity of automobile is judged, so as to targetedly trigger and the crash severity Corresponding response operation.The scheme application limitation of the embodiment of the present invention is less, can cover many to automobile The detection of collision situation is planted, reliability is high.
Further, in the scheme of the embodiment of the present invention, if the air bag of automobile pops, automobile is judged Generation severe crash, automobile triggering emergency assistance services;If the air bag of automobile does not pop, and collides Severity quantification value is more than or equal to default threshold value, judges that automobile occurs slight impact, is selected by user Whether common rescue service is triggered;If the air bag of automobile does not pop, and crash severity quantized value Less than the threshold value, judge that automobile does not collide, if there is DTC, by user according to DTC To choose whether to trigger common rescue service.The scheme of the embodiment of the present invention is touched according to judged automobile The order of severity is hit, corresponding roadside assistance service is triggered exactly, make rescue service that there is higher being directed to Property.
Further, in the judgement to the car crass order of severity, the scheme of the embodiment of the present invention is existing The acceleration limits value of the x-axis, y-axis and z-axis of the automobile is introduced on the basis of technology;At interval of first Cycle, according to the acceleration meansigma methodss and acceleration of the x-axis, y-axis and z-axis of the automobile in second round Limits value calculates the Severity index of the automobile, and according in the period 3 automobile it is tight The crash severity quantized value of automobile described in weight scale evaluation Index for Calculation.The x-axis of the automobile, y-axis With the acceleration limits value acceleration magnitude that respectively value can bear in user in the reasonable scope of z-axis, The introducing of acceleration limits value can more preferable simulation practical situations, the judgement to car crass degree More accurately, application value is preferable.
Description of the drawings
Fig. 1 is the flow chart of the collision checking method embodiment of automobile of the present invention;
Fig. 2 is the flow chart of another embodiment of collision checking method of automobile of the present invention;
Fig. 3 is the method flow diagram that the embodiment of the present invention calculates crash severity quantized value;
Fig. 4 is the structural representation of the collision detecting device embodiment of automobile of the present invention.
Specific embodiment
As described in the background section, the application limitation of the car crass detection method of prior art is larger and real The poor problem of border application value.
Present inventor is studied the collision checking method of the automobile of prior art.In existing skill In art, the most judgements whether popped using the air bag to automobile of the collision detection of automobile are judging vapour Whether car collides, and this determination methods is only capable of detecting automobile generation major accident, with larger Limitation.Also there is a kind of car crass detection side based on 3-axis acceleration sensor in prior art Method, by detecting whether whether the accekeration of automobile collide more than threshold decision automobile.This detection Method gathers at predetermined time intervals a 3-axis acceleration value by the 3-axis acceleration sensor of automobile;Read The current 3-axis acceleration value of automobile is taken, to the pre-determined number before the current 3-axis acceleration value of the automobile 3-axis acceleration value carry out arithmetic average process, the 3-axis acceleration value for calculating the pre-determined number exists The meansigma methodss of each axle;The accekeration for calculating three current axles of the automobile is flat with corresponding each axle Whether the difference of average, the automobile according to the difference and threshold decision there occurs collision.Although this inspection Abnormal burst bounce when survey method can solve sensor sample by way of calculating acceleration meansigma methodss The impact for bringing, but not from from the point of view of in-car user to in-car user couple in actual applications The ability to bear of acceleration and the degree that is hurt;It is x before and after the in-car user that hypothesis fastens one's safety belt Axle, left and right are y-axis, are up and down z-axis;As a rule, in-car user is to adding on x-axis direction The ability to bear of speed is more than y-axis and z-axis.Therefore, prior art based on 3-axis acceleration sensor Car crass detection method practical application meaning it is poor.
Based on the studies above result, the present invention provides a kind of collision checking method of automobile, as shown in figure 1, The collision checking method of the automobile is comprised the following steps:
Step S101, whether the air bag of automobile pops described in real-time monitoring, and vapour described in real-time detection The accekeration of the vehicle-mounted acceleration transducer of car.
Step S102, sentences according to whether the air bag of the automobile pops with the accekeration of the automobile The crash severity of the disconnected automobile.
Step S103, according to different crash severities, triggers corresponding with the crash severity Response operation;It is described response operation can include various modes of operation, such as trigger appropriate rescue service, Video or connection GPRS during record collision scenario carries out positioning etc. to the automobile for colliding.
The scheme of the embodiment of the present invention by whether the air bag of automobile is popped simultaneously and automobile plus Velocity amplitude detected, can make dual judgement to the collision situation of automobile;Collision scenario and safety When air bag pops, then more serious vehicle accident is there occurs;When collision scenario but air bag is not When popping, only cannot effectively be judged by air bag, now using the accekeration of automobile to vapour The crash severity of car is judged, corresponding with the crash severity so as to targetedly trigger Response operation.The scheme application limitation of the embodiment of the present invention is less, can cover the various collisions of automobile The detection of situation, reliability is high.
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent from, with reference to Accompanying drawing is described in detail to the specific embodiment of the present invention.
Fig. 2 is the flow chart of another embodiment of collision checking method of automobile of the present invention.
In the present embodiment, be ignited when ignition coil, when the automobile is started working, i.e. execution step Whether S201, the automobile real-time monitoring air bag pops, and detects that the automobile mounted acceleration is passed The accekeration of sensor;And the acceleration whether popped with the automobile according to the air bag of the automobile Value judges the crash severity of the automobile.Wherein, judge that the crash severity of the automobile can be with Comprise the following steps:
Whether step S202, the air bag for judging the automobile pops, if popping, execution step S203, Judge that the automobile there occurs severe crash.
Now, there is the situation of severe crash, the response of the automobile triggering corresponding to the automobile Operation can include:Step S204, asks rescue service automatically;Due to there is severe crash in automobile In the case of, it is considered that occupant is in peril of one's life, and the automatic request rescue service can include straight Connect and dial 120 or other public way rescue facilitys enforcement rescues.
The judgement step of the crash severity of the automobile can also be included:
If the air bag for judging the automobile does not pop, passed according to the described vehicle-mounted acceleration for detecting The accekeration of sensor calculates crash severity quantized value, and execution step S205, judges the collision Whether severity quantification value is more than or equal to default threshold value.
If the result for judging step S205 is yes, execution step S206, judge that the automobile there occurs gently Micro- collision;In this case, automobile execution step S207, by the automobile taking or drive send out Slight impact this case is given birth to and has reminded user, specific alerting pattern can be by display screen or warning lamp Realize, particular restriction is not carried out herein.
Execution step S2010 after user is reminded, waits user to choose whether to trigger common rescue service;Typically The rational waiting time can be set, the trigger action of user is waited within the waiting time, user can be with Trigger action is carried out by default button, particular restriction is not done herein;There is slight impact in automobile In the case of, automobile has been likely to occur failure, and user can select such as to dial default public rescue service electricity The common rescue service such as words or helpdesk's phone.
If the result that step S205 judges is no, i.e., described crash severity quantized value is less than the threshold value, Then judge that the automobile does not collide, and execution step S208, determine whether whether the automobile is deposited In DTC;If existing, execution step S209, show that the DTC simultaneously reminds user, user can be with The particular location and failure cause that automobile breaks down is judged by shown failure digital content;Then, It is same to perform S2010, within the rational waiting time, wait user to choose whether to trigger common rescue service; In the case where automobile does not collide, the failure cause of automobile is locked by DTC, with automobile flat tire As a example by, user can select such as to dial the common rescue service of phone at default flowing tire patching.
If there is no the DTC or user do not trigger common rescue service, execution step S201, institute State whether automobile real-time monitoring air bag pops, and detect adding for the automobile mounted acceleration transducer Velocity amplitude.
Execution step S2011 after execution step S204 and step S2010, records the failure of the automobile Information;If automobile there occurs severe crash, the relevant information of collision is recorded, the time for such as colliding Deng;If automobile there occurs slight impact, while record collision accident corresponding pickup value is recorded; If automobile is to collide and there is DTC, fault time and DTC are recorded.Complete pair event After the record of barrier information, the automobile exits the detection to colliding.
In being embodied as, fault message record can be transmitted to background server, also be can record In a plug and play (Plug and Play) equipment, in case reading.
In the scheme of the embodiment of the present invention, according to the crash severity of judged automobile, exactly Corresponding roadside assistance service is triggered, makes rescue service that there is higher specific aim.Can be to breaking down In automobile help is provided, the personnel in vehicle accident are carried out with urgent medical therapy, reduce injures and deaths and Injury, can also effectively improve traffic order, help relevant departments (such as traffic department, insurance department Deng) more just process vehicle accident and follow-up relevant issues.
It should be noted that in the scheme of the embodiment of the present invention, when the air bag of the automobile it is not quick-fried Open, crash severity quantized value is calculated according to the accekeration of the vehicle-mounted acceleration transducer of the automobile Afterwards, the present embodiment can also arrange the crash severity quantized value respectively from different predetermined threshold values It is compared, such as first threshold, Second Threshold, the 3rd threshold value (first threshold < Second Threshold < the 3rd Threshold value) etc.;By performance the car crass order of severity the crash severity quantized value according to it is described not Same predetermined threshold value is divided into more intervals, and further according to different intervals the automobile is determined whether Crash severity, is that subsequent treatment and the different response operation corresponding to the crash severity are carried For more careful data foundation.
Fig. 3 is the method flow diagram that the embodiment of the present invention calculates crash severity quantized value.
In the present embodiment, the vehicle-mounted acceleration transducer can be 3-axis acceleration sensor, described The computational methods of crash severity quantized value can include the step of performing successively S301 to step S305:
Step S301, at interval of the period 1 the once x-axis of the 3-axis acceleration sensor, y are gathered The accekeration of axle and z-axis, to ensure in the time domain to the continuous acquisition of the accekeration;Wherein, The period 1 is the inverse of sample frequency;The present embodiment by taking sample frequency 3kHz as an example, concrete In enforcement, can adjust accordingly according to the actual requirements.
Step S302, at interval of the period 1, calculates once the x-axis, y-axis and z-axis of the automobile Meansigma methodss of the accekeration within second round, are denoted as respectivelyWithEquation below can be adopted To carry outWithCalculate:
In the present embodiment, the second round be more than or equal to the period 1, the present embodiment is with second Cycle is as a example by 50ms, in being embodied as, can to adjust accordingly according to the actual requirements.
Step S303, determines the acceleration limits value of the x-axis, y-axis and z-axis of the automobile, remembers respectively MakeWithThe fore-and-aft direction of the in-car user that hypothesis fastens one's safety belt is x-axis, left and right directions is y Axle, above-below direction are z-axis;As a rule, in-car user holding to the acceleration on x-axis direction By ability more than y-axis and z-axis, i.e., in a practical situation, in-car user holds to out-of-alignment acceleration It is different by ability and the degree that is hurt, therefore introduce the acceleration limits value.
Wherein, the acceleration limits valueWithFor empirical value, can carry out according to the actual requirements It is determined that;Its value principle is, in the case that in the car user fastens one's safety belt, the acceleration of its all directions When degree is less than the acceleration limits value of correspondence direction, human body will not be damaged.In the present embodiment In,G is gravity acceleration value.
Step S304, according to the acceleration limits value and acceleration of the x-axis, y-axis and z-axis of the automobile Meansigma methodss, calculate the Severity index of the automobile, are designated as ASI (t);Can be according to formulaCalculate Severity Index A SI (t) of the automobile.
Step S305, the automobile according to the Severity Index for Calculation of the automobile in the period 3 Crash severity quantized value, and be set more than the period 1 period 3.
The present embodiment in two ways as a example by, the calculating to the crash severity quantized value of the automobile is entered Row explanation.
Method one, can be by the maximum of the Severity index of the automobile in the period 3 It is worth the crash severity quantized value as the automobile.
Method two, can calculate the automobile in the period 3 Severity index it is flat Average is used as mean severity assessment index;Calculate the mean severity assessment in the period 3 Crash severity quantized value of the maximum of index as the automobile;Calculate institute using below equation State the crash severity quantized value of automobile:
Methods described two calculates the flat of the Severity index of the automobile in the period 3 Average can algorithmically effective filter out data burr as mean severity assessment index, can be with Reject the gross error of the acceleration increase as accidentally occurred in automobilism, it is to avoid erroneous judgement.
The present embodiment can be adjusted accordingly according to the actual requirements with the period 3 as 15ms, not done herein Particular restriction.
In the present embodiment, by ASI15Value is representing the crash severity quantized value of the automobile in 15ms. By ASI15Comparing with default threshold value carries out collision detection, the threshold value be empirical value, the present embodiment foundation The threshold value value is 1.8 by modular system.
In the car crass extent of disease severity of the present embodiment, the present embodiment is on the basis of existing technology Introduce the acceleration limits value of the x-axis, y-axis and z-axis of the automobile;At interval of the period 1, according to The acceleration meansigma methodss of the x-axis, y-axis and z-axis of the automobile and acceleration limits value calculate institute in two cycles The Severity index of automobile is stated, and is referred to according to the Severity of the automobile in the period 3 Number calculates the crash severity quantized value of the automobile.The acceleration of the x-axis, y-axis and z-axis of the automobile The degree limits value acceleration magnitude that respectively value can bear in user in the reasonable scope, acceleration is limited The introducing of value can more preferable simulation practical situations, car crass degree is accurately calculated, Application value is preferable.
In order to solve the problems of the prior art described in background section, the embodiment of the present invention is also A kind of collision detecting device 40 of automobile is provided, as shown in figure 4, the collision detecting device 40 of automobile can be with Including:
Whether safety detection unit 41, the air bag for being suitable to automobile described in real-time monitoring pops, and in real time Detect the accekeration of the vehicle-mounted acceleration transducer of the automobile.
Collision detection processing unit 42, collision detection processing unit 42 is the collision detecting device of the automobile Whether 40 core, couples the safety detection unit 41, be suitable to quick-fried according to the air bag of the automobile Open the crash severity that the automobile is judged with the accekeration of the automobile.
Operation trigger element 43, couples the collision detection processing unit 42, is suitable to according to different collisions The order of severity, triggers response operation corresponding with the crash severity.
In being embodied as, the safety detection unit 41 can correspond to the SDM in automobile and vehicle-mounted Acceleration transducer, the SDM is suitable to whether the air bag of automobile described in real-time monitoring pops, described Vehicle-mounted acceleration transducer is suitable to the accekeration of automobile described in real-time detection;But the present embodiment not limited to this, The safety detection unit 41 can also be realized by the way of hardware detection is combined with software.
The collision detection processing unit 42 can include:First judges subelement 421, if the automobile Air bag pop, the first judgement subelement 421 judges that the automobile occurs severe crash.It is right There is severe crash in automobile described in Ying Yu, the response operation includes request rescue service automatically.
The collision detection processing unit 42 can also include:
Computation subunit 422, if the air bag of the automobile does not pop, the computation subunit 422 Crash severity quantized value is calculated according to the accekeration of the automobile for detecting.
Second judges subelement 423, if the crash severity quantized value is more than or equal to default threshold value, Judge that the automobile occurs slight impact.
3rd judges subelement 424, if the crash severity quantized value is less than the threshold value, judges institute State automobile not colliding.
If the crash severity quantized value is less than the threshold value, the 3rd judgement subelement 424 enters One step reads from electronic controller (not shown) and judges that the automobile whether there is DTC;If depositing Then described to operate the triggering DTC display unit of trigger element 43 (not shown) the display failure Code.
If the automobile does not collide, and has DTC, then the response operation can include:By User chooses whether to trigger common rescue service.
There is slight impact corresponding to the automobile, the response operation can include reminding user whether Request rescue service.
Do not collide corresponding to the automobile, and the automobile storage is in DTC, the response operation can Whether to ask rescue service including prompting user.
The vehicle-mounted acceleration transducer can be 3-axis acceleration sensor, the computation subunit 422 Including:
Acquisition module 4221, is suitable to gather once the 3-axis acceleration sensor at interval of the period 1 The accekeration of x-axis, y-axis and z-axis.
Mean value calculation module 4222, was suitable at interval of the period 1, calculate once the x-axis of the automobile, Meansigma methodss of the accekeration of y-axis and z-axis within second round, are denoted as respectivelyWithDescribed Two cycles are more than or equal to the period 1.
Acceleration limit value determining module 4223, is adapted to determine that the x-axis, y-axis and z-axis of the automobile Acceleration limits value, is denoted as respectivelyWith
Severity Index for Calculation module 4224, according to the x-axis, y-axis and z-axis of the automobile Acceleration limits value and acceleration meansigma methodss, calculate the Severity index of the automobile.
Crash severity quantized value computing module 4225, according to the serious journey of the automobile in the period 3 Degree assessment index calculates the crash severity quantized value of the automobile, arranges the period 3 more than institute State the period 1.
The Severity Index for Calculation module 4224 can be according to formula Calculate the Severity index of the automobile.
The crash severity quantized value computing module 4225 can be by the vapour in the period 3 Crash severity quantized value of the maximum of the Severity index of car as the automobile.
The crash severity quantized value computing module 4225 can in the following way calculate the collision Severity quantification value:
The meansigma methodss of the Severity index of the automobile in the calculating period 3 are used as average serious Scale evaluation index;Calculate the maximum conduct of the mean severity assessment index in the period 3 The crash severity quantized value of the automobile.
The collision detecting device 40 of the automobile can also include fault message recording unit 44, be suitable to record The fault message of the automobile.
The more information of the collision detecting device 40 of automobile refer to the collision detection of automobile in above example The associated description of method, here is omitted.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, Without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore the guarantor of the present invention Shield scope should be defined by claim limited range.

Claims (26)

1. a kind of collision checking method of automobile, it is characterised in that include:
Step A, whether the air bag of automobile pops described in real-time monitoring, and automobile described in real-time detection The accekeration of vehicle-mounted acceleration transducer;
Whether step B, pop judge institute with the accekeration of the automobile according to the air bag of the automobile State the crash severity of automobile;
Step C, according to different crash severities, triggers response corresponding with the crash severity Operation.
2. collision checking method as claimed in claim 1, it is characterised in that step B includes:
Step B1, if the air bag of the automobile pops, judges that the automobile occurs severe crash.
3. collision checking method as claimed in claim 2, it is characterised in that occur corresponding to the automobile tight Collide again, the response operation includes request rescue service automatically.
4. collision checking method as claimed in claim 2, it is characterised in that step B also includes:
Step B2, if the air bag of the automobile does not pop, passes according to the described vehicle-mounted acceleration for detecting The accekeration of sensor calculates crash severity quantized value;
Step B3, if the crash severity quantized value is more than or equal to default threshold value, judges the automobile Generation slight impact;
Step B4, if the crash severity quantized value is less than the threshold value, judges that the automobile does not occur Collision.
5. collision checking method as claimed in claim 4, it is characterised in that step B4 also includes:
If the crash severity quantized value is less than the threshold value, determine whether that the automobile whether there is DTC;If existing, the response operation includes showing the DTC.
6. collision checking method as claimed in claim 5, it is characterised in that step C includes:
If the automobile does not collide, and has the DTC, then the response operation includes:By with Family chooses whether to trigger common rescue service.
7. collision checking method as claimed in claim 4, it is characterised in that occur corresponding to the automobile light Micro- collision, the response operation includes reminding whether user will ask rescue service.
8. collision checking method as claimed in claim 5, it is characterised in that do not occur corresponding to the automobile Collision, and the automobile storage is in DTC, the response operation includes reminding whether user will ask emergency The service of helping.
9. collision checking method as claimed in claim 4, it is characterised in that the vehicle-mounted acceleration transducer For 3-axis acceleration sensor, step B2 includes:
Step B21, at interval of the period 1 the once x-axis of the 3-axis acceleration sensor, y-axis are gathered With the accekeration of z-axis;
Step B22, at interval of the period 1, calculates once the acceleration of the x-axis, y-axis and z-axis of the automobile Meansigma methodss of the angle value within second round, are denoted as respectivelyWithThe second round more than etc. In the period 1;
Step B23, determines the acceleration limits value of the x-axis, y-axis and z-axis of the automobile, is denoted as respectively With
Step B24, it is average according to the acceleration limits value and acceleration of the x-axis, y-axis and z-axis of the automobile Value, calculates the Severity index of the automobile;
Step B25, the automobile according to the Severity Index for Calculation of the automobile in the period 3 Crash severity quantized value, the period 3 is more than the period 1.
10. collision checking method as claimed in claim 9, it is characterised in that step B24 includes:
According to formulaCalculate the Severity index of the automobile.
11. collision checking methods as claimed in claim 9, it is characterised in that step B25 includes:
Using the maximum of the Severity index of the automobile in the period 3 as the automobile Crash severity quantized value.
12. collision checking methods as claimed in claim 9, it is characterised in that step B25 includes:
The meansigma methodss of Severity index of the automobile in the period 3 are calculated as average tight Weight scale evaluation index;
Calculate maximum the touching as the automobile of the mean severity assessment index in the period 3 Hit severity quantification value.
13. collision checking methods as claimed in claim 1, it is characterised in that after step C is performed, The collision checking method also includes:
Step D, records the fault message of the automobile.
14. a kind of collision detecting devices of automobile, it is characterised in that include:
Whether safety detection unit, the air bag for being suitable to automobile described in real-time monitoring pops, and real-time detection The accekeration of the vehicle-mounted acceleration transducer of the automobile;
Collision detection processing unit, couples the safety detection unit, is suitable to the substitute according to the automobile Whether capsule pops judge the crash severity of the automobile with the accekeration of the automobile;
Operation trigger element, couples the collision detection processing unit, is suitable to according to the different serious journeys of collision Degree, triggers response operation corresponding with the crash severity.
15. collision detecting devices as claimed in claim 14, it is characterised in that the collision detection processing unit Including:First judges subelement, if the air bag of the automobile pops, described first judges that son is single Unit judges that the automobile occurs severe crash.
16. collision detecting devices as claimed in claim 15, it is characterised in that occur corresponding to the automobile tight Collide again, the response operation includes request rescue service automatically.
17. collision detecting devices as claimed in claim 15, it is characterised in that the collision detection processing unit Also include:
Computation subunit, if the air bag of the automobile does not pop, the computation subunit is according to detecting The automobile accekeration calculate crash severity quantized value;
Second judges subelement, if the crash severity quantized value is more than or equal to default threshold value, judges There is slight impact in the automobile;
3rd judges subelement, if the crash severity quantized value is less than the threshold value, judges the vapour Car does not collide.
18. collision detecting devices as claimed in claim 17, it is characterised in that also include:
If the crash severity quantized value be less than the threshold value, it is described 3rd judge subelement further from Electronic controller reads and judges that the automobile whether there is DTC;If existing, the operation is touched Send out unit triggers DTC display unit and show the DTC.
19. collision detecting devices as claimed in claim 18, it is characterised in that if the automobile does not collide, And there is DTC, then the response operation includes:Chosen whether to trigger common rescue service by user.
20. collision detecting devices as claimed in claim 18, it is characterised in that occur corresponding to the automobile light Micro- collision, the response operation includes reminding whether user will ask rescue service.
21. collision detecting devices as claimed in claim 18, it is characterised in that do not occur corresponding to the automobile Collision, and the automobile storage is in DTC, the response operation includes reminding whether user will ask emergency The service of helping.
22. collision detecting devices as claimed in claim 17, it is characterised in that the vehicle-mounted acceleration transducer For 3-axis acceleration sensor, the computation subunit includes:
Acquisition module, is suitable to gather the once x-axis of the 3-axis acceleration sensor, y at interval of the period 1 The accekeration of axle and z-axis;
Mean value calculation module, is suitable to, at interval of the period 1, calculate the once x-axis of the automobile, y-axis Meansigma methodss with the accekeration of z-axis within second round, are denoted as respectivelyWithInstitute is set Second round is stated more than or equal to the period 1;
Acceleration limit value determining module, is adapted to determine that the acceleration of the x-axis, y-axis and z-axis of the automobile Limits value, is denoted as respectivelyWith
Severity Index for Calculation module, according to the acceleration of the x-axis, y-axis and z-axis of the automobile Limits value and acceleration meansigma methodss, calculate the Severity index of the automobile;
Crash severity quantized value computing module, according to the Severity of the automobile in the period 3 The crash severity quantized value of automobile described in Index for Calculation, arranges period 3 more than described the One cycle.
23. collision detecting devices as claimed in claim 22, it is characterised in that the Severity index Computing module is suitable to according to formulaCalculate the Severity of the automobile Index.
24. collision detecting devices as claimed in claim 22, it is characterised in that the crash severity quantifies Value computing module makees the maximum of the Severity index of the automobile in the period 3 For the crash severity quantized value of the automobile.
25. collision detecting devices as claimed in claim 22, it is characterised in that the crash severity quantifies Value computing module calculates in the following way the crash severity quantized value:
The meansigma methodss of Severity index of the automobile in the period 3 are calculated as average tight Weight scale evaluation index;
Calculate maximum the touching as the automobile of the mean severity assessment index in the period 3 Hit severity quantification value.
26. collision detecting devices as claimed in claim 14, it is characterised in that also including fault message label Unit, is suitable to record the fault message of the automobile.
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