CN105094107B - The control method of security diagnostics module during automobile rear-collision - Google Patents

The control method of security diagnostics module during automobile rear-collision Download PDF

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Publication number
CN105094107B
CN105094107B CN201410210006.1A CN201410210006A CN105094107B CN 105094107 B CN105094107 B CN 105094107B CN 201410210006 A CN201410210006 A CN 201410210006A CN 105094107 B CN105094107 B CN 105094107B
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China
Prior art keywords
acceleration
rate threshold
collision
automobile
acceleration rate
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CN201410210006.1A
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CN105094107A (en
Inventor
余志刚
董瑞强
沈海东
宋正超
李年卫
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SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
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Pan Asia Technical Automotive Center Co Ltd
Shanghai General Motors Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
    • G05B23/021Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system adopting a different treatment of each operating region or a different mode of the monitored system, e.g. transient modes; different operating configurations of monitored system
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/048Monitoring; Safety

Abstract

The present invention relates to a kind of control method of security diagnostics module during automobile rear-collision, comprise the following steps:A), calculate after collide when automobile collision before and after speed difference and crash acceleration;B), if speed difference is more than or equal to First Speed difference threshold value, into step c);Otherwise, into step f);C) quick-fried high pressure breaker device, is put;D), judge that if crash acceleration is more than the first acceleration rate threshold, into step e), if crash acceleration is less than the second acceleration rate threshold, ending method;F), judge that if crash acceleration is more than the 3rd acceleration rate threshold, into step g), if crash acceleration is less than the 4th acceleration rate threshold, ending method;G) quick-fried high pressure breaker device, is put.It effectively protects an occupant from injuring caused by automobile rear-collision, hence it is evident that reduces the mistake effect risk of various security configurations during collision.

Description

The control method of security diagnostics module during automobile rear-collision
Technical field
Examined safely the present invention relates to automobile safety protective technical field, during more specifically to a kind of automobile rear-collision The control method of disconnected module.
Background technology
With sharply increasing for car ownership, the casualties caused by automobile collision accident has become wide in the world For the serious problem of society today of concern, automotive safety also turns into the important topic of car industry.To reduce passenger in collision accident With the risk of injury of personnel outside car, each auto vendor constantly researches and develops collision safety technology, while increases the security configurations such as air bag Quantity.However, because crash event is very short, it is desirable to which each security configuration must be in place within a few tens of milliseconds, therefore many peaces Full configuration is promoted with gunpowder point is quick-fried, as fruit dot quick-fried opportunity is improper, customer is complained the mistake of security configuration Effect, and the huge explosive force of gunpowder can bring unexpected injury to occupant.It is thus typically necessary to security configuration is touched in low speed Do not worked in the case of hitting, and it is correct in place in the case of high velocity impact.
In the research and development link of automobile safety protective technology, the work opportunity of various security configurations needs to pass through a series of experiments Carry out Accurate Calibration, the purpose missed effect risk, play protection passenger is reduced to reach.
As shown in figure 1, a kind of automotive safety configuration system includes in the prior art:Preceding crash sensor 301,302, side impact Hit sensor 303,304, security diagnostics module 40, car body control module 50, door unlocking unit 511, double jump lamp 512, long-range association Auxiliary system 410, preceding impact airbag 411, side collision air bag 412, safety belt pretensioner 413 and battery relay 414(As cutting The high pressure breaker device in power-off source, to prevent occupant from getting an electric shock).Wherein, preceding crash sensor 301,302 is used to measure collision hair In the pickup of vehicle traveling direction when raw, and it is supplied to security diagnostics module 40;Side collision sensor 303,304 is used for Pickup when measurement collision occurs on the direction vertical with vehicle traveling direction, is also provided to security diagnostics module 40.Security diagnostics module 40 according to collision occur when vehicle traveling direction and perpendicular direction on pickup come to Car body control module 50 sends instruction, and the corresponding security configuration module of control is acted.Car body control module 50 controls The door solution of unlocking unit 511 locks door, lights double flashing lights 512.Security diagnostics module 40 is reported by remote assisting system 410 simultaneously Alert, when judging to occur severe crash, security diagnostics module 40 points of quick-fried preceding impact airbags 411, side collision air bag 412, safety belts are pre- All or part in tight device 413 and battery relay 414.Wherein, security module judges that the standard that severe crash occurs is come Parameter of measurement is generally used as with speed difference before and after car crass from measurement and demarcation in an experiment, this standard.
Although automobile rear-collision fatal rate is relatively low, it easily causes whiplass, and after neck wound rehabilitation process It is extremely complex, very long, some permanent injuries that even can not be cured.Occupant injury caused by collision has caused vapour afterwards The concern of man of depot.
The automotive safety protection released in the prior art focuses mainly on collision and side collision operating mode before using in an experiment Work opportunity to various security configurations is demarcated, and then the action of various security configurations is controlled when colliding and occurring, these Although security configuration can reduce risk of injury of the occupant in rear collision accident to a certain extent, however, due to these technologies very Few security protection focused on when even ignoring automobile rear-collision to occupant, and more focus on the feelings such as collision rift fuel leakage Condition, therefore fail to meet the automotive safety demand increasingly risen.
Therefore, it is necessary to design a kind of control method of security diagnostics module during automobile rear-collision, it can effectively drop The risk that security configuration acts on by mistake during low automobile rear-collision.
The content of the invention
It is an object of the invention to provide a kind of control method of security diagnostics module during automobile rear-collision.
To achieve the above object, it is as follows to provide a technical scheme by the present invention:
The control method of security diagnostics module, comprises the following steps during a kind of automobile rear-collision:When being collided after a), calculating Speed difference and crash acceleration before and after the collision of automobile;If b), speed difference is more than or equal to First Speed difference threshold value, enter step It is rapid c);Otherwise, into step f);C) quick-fried high pressure breaker device, is put;D), judge that if crash acceleration is more than the first acceleration threshold Value, then into step e), if crash acceleration is less than the second acceleration rate threshold, ending method;Wherein, the first acceleration rate threshold More than or equal to the second acceleration rate threshold;E) quick-fried constrained system, is put;If f), judging that crash acceleration is more than the 3rd acceleration rate threshold, Then enter step g), if crash acceleration is less than the 4th acceleration rate threshold, ending method;Wherein, the 3rd acceleration rate threshold is big In equal to the 4th acceleration rate threshold;G) quick-fried high pressure breaker device, is put.
Preferably, first, second, third and fourth acceleration rate threshold corresponds respectively to may move rigid obstacle after by one The acceleration of automobile when automobile collides with different impact velocities in side.
Preferably, the 3rd acceleration rate threshold is identical with the first acceleration rate threshold, the 4th acceleration rate threshold and the second acceleration Threshold value is identical.
The control method of security diagnostics module during automobile rear-collision provided by the invention, due to adding automobile rear-collision mark Determine operating mode, have the advantages that:The calibration matrix of security diagnostics module is more complete, not only effectively protects an occupant from vapour Injured caused by being collided after car, and significantly reduce the mistake effect risk of various security configurations during collision, avoid security configuration The injury brought to occupant is acted on by mistake, reduces the complaint that client acts on security configuration by mistake, improves automobile product and automobile enterprise The commercial image of industry.
Brief description of the drawings
Fig. 1 shows automotive safety configuration system structure diagram in the prior art;
Fig. 2 shows automobile rear-collision operating mode schematic diagram during experiment;
Fig. 3 shows that the flow of the control method of security diagnostics module during the automobile rear-collision that one embodiment of the invention provides is shown It is intended to.
Embodiment
As shown in Fig. 2 judge whether to need the standard of a little quick-fried security configuration to come from experiment in the embodiment of the present invention Demarcation, in the demarcation of automobile rear-collision, in many experiments with may move rigid obstacle 1 from rear at different rates/plus The afterbody of velocity collision automobile 2, produces different impact strengths, speed difference and acceleration before and after the collision by calculating automobile 2 To set the standard for whether needing a little quick-fried corresponding security configuration.
As shown in figure 3, one embodiment of the invention provide automobile rear-collision when security diagnostics module control method, be used for The action of various security configurations is controlled with the security diagnostics module being equipped with automobile, it comprises the following steps:
Step S10, calculate after collide when automobile collision before and after speed difference and crash acceleration.
Specifically, speed before and after the collision of automobile when being collided after being calculated in real time by setting corresponding crash sensor Difference and crash acceleration.
Step S11, judge whether speed difference is more than or equal to First Speed difference threshold value.
Specifically, if speed difference is more than or equal to First Speed difference threshold value, step S12 is subsequently entered;Otherwise, into selection Property step S151 and step S152, and at most perform one of them.
Step S12, quick-fried high pressure breaker device is put.
Specifically, high pressure breaker device can for example use electrokinetic cell relay, breaker or similar component, as cut-out The high pressure breaker device of power supply, to prevent occupant from getting an electric shock.Selective step S131 and step S132 are subsequently entered, and at most Perform one of them.
Step S131, judge whether acceleration is more than the first acceleration rate threshold.
Specifically, if acceleration is more than the first acceleration rate threshold, step S14 is subsequently entered.
Step S132, judge whether acceleration is less than the second acceleration rate threshold.
Specifically, if acceleration is less than the second acceleration rate threshold, subsequent security diagnostics module no longer performs other controls Braking is made, and the control method terminates.
Step S14, quick-fried constrained system is put.
Specifically, before constrained system does not include such as preceding impact airbag, side collision air bag and gas curtain, knee air bag etc Collision or side collision security configuration, and safety belt pretensioner, SAHR and rear-impact airbag etc. are can be identified as, effectively to protect Shield occupant brings injury from automobile rear-collision.
After step S14, control method terminates.
Wherein, occupant is firmly secured on seat by safety belt pretensioner when colliding generation, SAHR protection Occupant's neck, rear-impact airbag is quick-fried from occupant rear point and expands rapidly to protect occupant.
Step S151, judge whether acceleration is more than the 3rd acceleration rate threshold.
If acceleration is more than the 3rd acceleration rate threshold, step S16 is subsequently entered.
Step S152, judge whether acceleration is less than the 4th acceleration rate threshold.
If acceleration is less than the 4th acceleration rate threshold, subsequent security diagnostics module no longer performs other control actions, The control method terminates.
Step S16, quick-fried high pressure breaker device is put.
Specifically, the step is realized and step S12 identical effects.After step S16, the control method terminates.
It will be appreciated by those skilled in the art that car crass acceleration be more than or equal to the second acceleration rate threshold and less than or equal to the During one acceleration rate threshold, can put quick-fried corresponding security configuration can not also put quick-fried, specifically may depend on strong to car crass The further classification of strong degree.
Similarly, it is more than or equal to the 4th acceleration rate threshold in car crass acceleration and is less than or equal to the 3rd acceleration rate threshold When, can put quick-fried corresponding security configuration can not also put quick-fried, specifically may depend on and enter one to car crass intensity Step classification.
A kind of specific implementation according to an embodiment of the invention, first, second, third and fourth acceleration rate threshold are right respectively Ying Yu is by may move pickup measured when rigid obstacle 1 collides automobile 2 with different impact velocities from rear.
Under preferable case, the 3rd acceleration rate threshold is identical with the first acceleration rate threshold, and the 4th acceleration rate threshold adds with second Threshold speed is identical.
Specifically, the demarcation tested according to multiple automobile rear-collision, the first, the 3rd acceleration rate threshold may be set to correspond to Pickup when rigid obstacle impact velocity is 35km/h is may move, the second, the 4th acceleration rate threshold may be set to correspondingly The acceleration of automobile when may move rigid obstacle impact velocity and be 20km/h.
Further, First Speed difference threshold value may be set to 15km/h in above-described embodiment.
The control method of security diagnostics module during automobile rear-collision provided in an embodiment of the present invention so that security diagnostics module Calibration matrix it is more complete, not only effectively protect an occupant from injuring caused by automobile rear-collision, and significantly reduce and touch The mistake effect risk of various security configurations, avoids security configuration from acting on the injury brought to occupant by mistake, reduces client to peace when hitting The complaint that full configuration acts on by mistake, improve the commercial image of automobile product and Automobile Enterprises.
Described above is not lain in and limited the scope of the invention only in the preferred embodiments of the present invention.Ability Field technique personnel can make various modifications design, thought and subsidiary claim without departing from the present invention.

Claims (7)

1. the control method of security diagnostics module, comprises the following steps during a kind of automobile rear-collision:
A), calculate after collide when automobile collision before and after speed difference and crash acceleration;
If b), the speed difference is more than or equal to First Speed difference threshold value, into step c);Otherwise, into step f);
C) quick-fried high pressure breaker device, is put;
If d), judge that the crash acceleration is more than the first acceleration rate threshold, into step e), if the crash acceleration is small In the second acceleration rate threshold, then terminate methods described;Wherein, first acceleration rate threshold is more than or equal to second acceleration Threshold value;
E), put quick-fried constrained system and then terminate the control method;
If f), judge that the crash acceleration is more than the 3rd acceleration rate threshold, into step g), if the crash acceleration is small In the 4th acceleration rate threshold, then terminate methods described;Wherein, the 3rd acceleration rate threshold is more than or equal to the 4th acceleration Threshold value;
G) the quick-fried high pressure breaker device, is put.
2. according to the method for claim 1, it is characterised in that the first, second, third and fourth acceleration rate threshold point Dui Yingyu not be by an acceleration that may move automobile when rigid obstacle collides automobile from rear with different impact velocities.
3. according to the method for claim 2, it is characterised in that the 3rd acceleration rate threshold and the first acceleration threshold It is worth identical, the 4th acceleration rate threshold is identical with second acceleration rate threshold.
4. according to the method for claim 3, it is characterised in that described first, the 3rd acceleration rate threshold correspond to it is described can Pickup when mobile rigid obstacle impact velocity be 35km/h, described second, described in the 4th acceleration rate threshold corresponds to It may move the acceleration of automobile when rigid obstacle impact velocity is 20km/h.
5. according to the method for claim 1, it is characterised in that the First Speed difference threshold value is 15km/h.
6. according to the method for claim 1, it is characterised in that the constrained system does not include preceding impact airbag, side collision Air bag and gas curtain, knee air bag.
7. according to the method for claim 6, it is characterised in that the constrained system includes safety belt pretensioner, active Headrest and rear-impact airbag.
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CN108625636A (en) * 2018-04-30 2018-10-09 罗杰敏 A kind of smart city safe traffic system
CN110803022B (en) * 2018-07-19 2021-10-15 郑州宇通客车股份有限公司 Electric vehicle collision protection control method and system
CN112098678B (en) * 2020-11-17 2021-02-26 南京集成电路产业服务中心有限公司 Accelerometer system, vehicle-mounted control system and vehicle-mounted safety control method

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