CN207955628U - It is a kind of to lead passively integrated multistage belt with pre-load device control system - Google Patents
It is a kind of to lead passively integrated multistage belt with pre-load device control system Download PDFInfo
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- CN207955628U CN207955628U CN201721875603.1U CN201721875603U CN207955628U CN 207955628 U CN207955628 U CN 207955628U CN 201721875603 U CN201721875603 U CN 201721875603U CN 207955628 U CN207955628 U CN 207955628U
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- belt
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Abstract
Passively integrated multistage belt with pre-load device control system is led the utility model discloses a kind of, sensor assembly detection environment, driving states simultaneously transmit signals to ECU, ECU judges the danger classes of automobile according to the signal received, corresponding instruction is sent out according to danger classes, control pre-tightens the multistage preload action that motor carries out " early warning adjustment constraint resets ".This system pre-tightens design using the multistage of " early warning adjustment constraint resets ", improves the occupant safety under different operating modes, different sitting postures；Real-time optimization calculating is carried out to pretightning force by built-in algorithm, improves the comfort of occupant；Using pilot control signal as one of trigger signal, the risk of active safety early warning system " judging by accident ", " failing to judge " in the presence of a harsh environment is compensated for, the promptness of the reliability and system response of system is improved.
Description
Technical field
The utility model is related to technical field of vehicle safety, more particularly to a kind of based on the passive Integration ofTechnology of automobile primary
Multistage belt with pre-load device and its control method.
Background technology
With the development of automobile active safety technology and electron controls technology, more and more systems and component are real in automobile
Electronization, activeization, intelligence are showed, the level of security of vehicle are made to step up.Belt with pre-load device is as main passive technology
Integrated representative products have merged the active safeties information such as whole vehicle state monitoring, environmental monitoring, danger early warning, have obtained in recent years
Significant progress, greatly improves the safety of car steering and the comfort of seating.
However, current belt with pre-load device still remains many defects, it would be highly desirable to improve.
First, pre-tighten moment not science.Traditional belt with pre-load device is that single-stage pre-tightens, i.e., at the given preload moment
Disposable tightening safety belt.But the study found that occupant offs normal the trend of leaning forward when automobile brake, pre-tightening the time in advance can be with
The sitting posture of offing normal for improving collision front occupant, is damaged with reducing occupant in car crass；On the other hand, studies have shown that in advance
It is too early that compact form safety belt pre-tightens the moment, protecting effect can be made to reduce instead, even lower than traditional gunpowder formula safety belt, when occupant not
In the presence of off normal lean forward when, pre-tighten the moment when before collision occurs within 300ms, it is preferable to the integrated protection effect of occupant.In this way
The safety belt that single-stage pre-tightens there is limitation, can not take into account the demand for security of different sitting posture occupants.
Second, pretightning force control is inaccurate.Current belt with pre-load device takes fixed pretightning force, that is, is pre-tightening
The belt-strap of a regular length is furled when action to reach the pretightning force of setting.On the one hand, excessive pretightning force can influence
The comfort of occupant, or even when occupant's sitting posture is inappropriate, additional injury can be caused to occupant；On the other hand, too small preload
Power can not effectively constrain occupant in automobile emergency brake again, be unable to reach good protecting effect.
It is single to pre-tighten signal source for third.Current preload safety belt is with the anti-collision warning of active safety early warning system
Signal, lane departure warning signal are as basis for estimation, however the camera shooting that collision warning systems, Lane Departure Warning System use
Head, radar are influenced by environments such as weather, road conditions, it is understood that there may be the possibility of " failing to judge ", and pre-tighten safety belt at this time and do not connect
Any action will not be taken by receiving pre-warning signal, this just brings great hidden danger to the safety of occupant.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of main quilt for the defect involved by background technology
Move integrated multistage belt with pre-load device control system.
The utility model uses following technical scheme to solve above-mentioned technical problem：
It is a kind of to lead passively integrated multistage belt with pre-load device control system, including preceding collision warning systems, deviation
Early warning system, pilot control sensing module, electronic control unit, pre-tightens motor execution module, peace at driving states sensing module
Full band ribbon and its fixed mechanism；
The preceding collision warning systems are for calculating before automobile to the time to collide, i.e. pre-impact time TTC, and general
It passes to the electronic control unit；
The Lane Departure Warning System is used to calculate the time of automobile side angle run-off-road, deviates time TLC in advance, and
It is transferred to the electronic control unit；
The driving states sensing module includes vehicle velocity sensor, vehicle acceleration transducer and crash sensor,
Wherein, the vehicle velocity sensor, acceleration transducer are placed on the inside of automobile B-column, be respectively used to monitoring automobile speed,
Acceleration, and pass it to the electronic control unit；The crash sensor is placed on the inside of automobile front face, for monitoring vapour
Whether vehicle currently collides, and passes it to the electronic control unit；
The pilot control sensing module includes brake pedal force sensor and steering wheel angular velocity sensor, wherein
The brake pedal sensor is placed at brake pedal, the stress size for monitoring brake pedal, and is passed it to described
Electronic control unit；The steering wheel angular velocity sensor is placed at vehicle steering wheel, is used for the tarnsition velocity of monitoring direction disk,
And pass it to the electronic control unit；
The preload motor execution module includes pre-tightening motor and mechanical transmission mechanism, wherein the preload motor is used for
Corresponding pre-fastening moment is exported in the control instruction for receiving electronic control unit to the mechanical transmission mechanism, the machinery
Transmission mechanism is used to tense belt-strap in the case where pre-tightening the driving of pre-fastening moment of motor output；
The electronic control unit senses mould with preceding collision warning systems, Lane Departure Warning System, driving states respectively
Block, pilot control sensing module, preload motor execution module are electrically connected, for inclined according to preceding collision warning systems, track
Signal from early warning system, the transmission of driving states sensing module, pilot control sensing module controls the preload motor and holds
Row module works.
The invention also discloses a kind of control method for the multistage belt with pre-load device control system that master passively integrates, packets
Containing step in detail below：
Step 1）, preceding collision warning systems, Lane Departure Warning System, driving states sensing module, pilot control pass
Module is felt respectively by the pre-impact time TTC measured in real time, pre- deviation time TLC, the speed of automobile, the acceleration of automobile, vapour
Whether vehicle currently collides, the tarnsition velocity of the stress size of brake pedal, steering wheel passes to the electronic control unit；
Step 2）, electronic control unit in the following way by the danger classes of automobile be evaluated as high priority, in it is preferential
Grade, low priority and zero priority：
High priority：Pre-impact time TTC<Preset first TTC threshold values, the signal currently to collide；
Middle priority：Preset first TTC threshold values≤pre-impact time TTC<Preset 2nd TTC threshold values or pre- deviation
Time TLC<The stress size of preset first TLC threshold values or brake pedal>Preset first force threshold or steering wheel
Tarnsition velocity>Preset first tarnsition velocity threshold value；
Low priority：Preset 2nd TTC threshold values≤pre-impact time TTC<Preset 3rd TTC threshold values or preset
First TLC threshold values≤pre- deviation time TLC<Preset 2nd TLC threshold values or preset second force threshold<Brake pedal
Stress size≤preset first force threshold or preset second tarnsition velocity threshold value<The tarnsition velocity of steering wheel≤default
The first tarnsition velocity threshold value；
Step 3）, electronic control unit sends control instruction to motor is pre-tightened according to the danger classes of current automobile, takes
Corresponding preload action, the preload action include " early warning " action, " adjustment " action, " constraint " action and Reset action,
Low priority corresponds to " early warning " action, and middle priority corresponds to " adjustment " action, and high priority corresponds to " constraint " action, zero priority
Corresponding Reset action, wherein：
" early warning " action refers to the belt-strap that control pre-tightens that motor " receives-putting-to receive " 30mm length；
" adjustment " action refers to the belt-strap that control pre-tightens that motor quickly tightens 50-90mm length；
" constraint " action refers to the belt-strap that control pre-tightens that motor quickly tightens 100-120mm length；
It refers to the preload of control preload motor releasing safety belt that Reset, which acts, loosens belt-strap is returned to normal position
It sets；
Step 4）, when the danger classes of automobile changes, electronic control unit is by new danger classes and former danger classes
It is compared, if the priority of new danger classes is higher than former danger classes, executes the corresponding preload action of new danger classes, it is no
Then continue to execute the corresponding preload action of former danger classes；
Step 5）If electronic control unit control is pre-tightened after motor executes " early warning " or " adjustment " action and is not collided,
And the danger classes of automobile becomes cancellation signal priority, then electronic control unit control pre-tightens motor and executes Reset action,
Loosen safety belt and reply initial position, to meet the comfort that occupant normally takes；
Step 6）If electronic control unit control pre-tightens, motor executes " constraint " action and collision has occurred, at this time electronics
Control unit, which stops being controlled according to the danger classes of automobile, pre-tightens motor work, but controls and pre-tighten motor after collision occurs etc.
Wait for that preset time threshold executes Reset action, with facilitate occupant escape and prevent its due to safety belt constraint for a long time by
Secondary injury.
As the further prioritization scheme of control method of the passive integrated multistage belt with pre-load device control system of the master,
The preset first TTC threshold values are 500ms, and preset 2nd TTC threshold values are 1000ms, and preset 3rd TTC threshold values are
2000ms, preset first TLC threshold values are 200ms, and preset 2nd TLC threshold values are 500ms, and preset first force threshold is
300N, preset second force threshold 200N, preset first tarnsition velocity threshold value are 2rad/s, preset second corner speed
Degree threshold value is 1.5rad/s, and preset time threshold is 1500ms.
The utility model has the following technical effects using above technical scheme is compared with the prior art：
1. the multistage of " early warning-adjustment-constraint-reset " pre-tightens the danger early warning that designs and can be realized to occupant, and can be simultaneous
The dangerous working condition of Gu Butong is required for pre-tightening the different of moment, so that occupant is kept correct sitting posture by " adjusting " in advance,
Collision promptly fetters occupant before occurring and realizes best protecting effect, improves the safety of system.
2. in " adjustment ", " constraint " action, most preferably pre- is calculated by vehicle driving state by built-in optimization algorithm
Clamp force, realization pretightning force is accurately controlled, improve traditional fixed preload it is excessive caused by occupant's comfort reduce
Phenomenon improves the comfort of system.
3. increasing the trigger signal source of preload action, sensed in preceding collision warning systems, Lane Departure Warning System
Device because external environment badly can not work normally or accuracy decline when, can be according to the traveling of pilot control signal determining automobile
State, and then necessary preload is taken to act, improve the reliability of system.
4. vehicle hazard grade to be carried out to the classification of high, medium and low zero priority, it is ensured that Gao You in an emergency situation
The preferential execution of the corresponding pretensioning operation of first grade, time delay caused by avoiding control command from serially executing and miss best pre-
The tight moment improves the promptness of system response.
Description of the drawings
Fig. 1 is the flow diagram of the utility model；
Fig. 2 is the specific control strategy flow chart in ECU.
Specific implementation mode
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings：
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, thesing embodiments are provided so that the disclosure is thorough and complete, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
The utility model is a kind of multistage belt with pre-load device control system led and passively integrated, including preceding anti-collision warning system
System, driving states sensing module, pilot control sensing module, electronic control unit, pre-tightens motor at Lane Departure Warning System
Execution module, belt-strap and its fixed mechanism；
The preceding collision warning systems are for calculating before automobile to the time to collide, i.e. pre-impact time TTC, and general
It passes to the electronic control unit；
The Lane Departure Warning System is used to calculate the time of automobile side angle run-off-road, deviates time TLC in advance, and
It is transferred to the electronic control unit；
The driving states sensing module includes vehicle velocity sensor, vehicle acceleration transducer and crash sensor,
Wherein, the vehicle velocity sensor, acceleration transducer are placed on the inside of automobile B-column, be respectively used to monitoring automobile speed,
Acceleration, and pass it to the electronic control unit；The crash sensor is placed on the inside of automobile front face, for monitoring vapour
Whether vehicle currently collides, and passes it to the electronic control unit；
The pilot control sensing module includes brake pedal force sensor and steering wheel angular velocity sensor, wherein
The brake pedal sensor is placed at brake pedal, the stress size for monitoring brake pedal, and is passed it to described
Electronic control unit；The steering wheel angular velocity sensor is placed at vehicle steering wheel, is used for the tarnsition velocity of monitoring direction disk,
And pass it to the electronic control unit；
The preload motor execution module includes pre-tightening motor and mechanical transmission mechanism, wherein the preload motor is used for
Corresponding pre-fastening moment is exported in the control instruction for receiving electronic control unit to the mechanical transmission mechanism, the machinery
Transmission mechanism is used to tense belt-strap in the case where pre-tightening the driving of pre-fastening moment of motor output；
The electronic control unit senses mould with preceding collision warning systems, Lane Departure Warning System, driving states respectively
Block, pilot control sensing module, preload motor execution module are electrically connected, for inclined according to preceding collision warning systems, track
Signal from early warning system, the transmission of driving states sensing module, pilot control sensing module controls the preload motor and holds
Row module works.
As shown in Figure 1, the working method of the utility model is：
Step 1）, preceding collision warning systems, Lane Departure Warning System, driving states sensing module, pilot control pass
Sense module will implement the pre-impact time TTC measured, pre- deviation time TLC, the speed of automobile, the acceleration of automobile, vapour respectively
Whether vehicle currently collides, the tarnsition velocity of the stress size of brake pedal, steering wheel passes to the electronic control unit
ECU。
In order to enable ECU preferably carries out control process, setting signal transfer module can be handled before ECU, it is special right
The signal received is pre-processed.
Step 2）, electronic control unit in the following way by the danger classes of automobile be evaluated as high priority, in it is preferential
Grade, low priority and zero priority：
High priority：Pre-impact time TTC<500ms is collided and has been occurred or can not avoid, need to take " constraint " at this time
The urgent constraint occupant of action, to mitigate the impact injury suffered by occupant；
Middle priority：500ms≤pre-impact time TTC<1000ms or pre- deviates time TLC<200ms or brake pedal
Stress size>The tarnsition velocity of 300N or steering wheel>2rad/s has larger may collide or automobile is at this time
The state of emergency braking, emergency turn, occupant leans forward, inclination trend and leave seat, " adjustment " action need to be taken with larger
Pretightning force to occupant support, help it to adjust back normal sitting position；
Low priority：1000ms≤pre-impact time TTC<2000ms or 200ms≤pre- deviation time TLC<500ms or
200N <Stress size≤the 300N or 1.5rad/s of brake pedal<Tarnsition velocity≤2rad/s of steering wheel, at this time automobile
Transition stage in nominal situation and dangerous working condition need to take " early warning " action to remind occupant to pay attention to the change of vehicle condition, road conditions
Change, occurs to avoid dangerous working condition.
It is all zero signal priority in addition to the above signal, zero signal priority represents nominal situation, takes Reset dynamic
Make, loosens belt-strap.
Step 3）, electronic control unit sends control instruction to motor is pre-tightened according to the danger classes of current automobile, takes
Corresponding preload action, the preload action include " early warning " action, " adjustment " action, " constraint " action and Reset action,
Low priority corresponds to " early warning " action, and middle priority corresponds to " adjustment " action, and high priority corresponds to " constraint " action, zero priority
Corresponding Reset action, wherein：
" early warning " action refers to the belt-strap for pre-tightening motor and " receiving-putting-to receive " 30mm length, slight to fetter occupant to reach
Pay attention to vehicle condition, road conditions and the purpose for adjusting sitting posture to it is reminded；
" adjustment " action refers to the belt-strap for pre-tightening motor and quickly tightening 50-90mm length, with pretightning force appropriate
Inertia force when offsetting emergency braking, turning to suffered by occupant, to help it to keep correct sitting posture, body when avoiding collision generation
Body excessively leans forward and is damaged, and wherein the preload length of safety belt is calculated according to vehicle body acceleration information by ECU built-in algorithms
Go out, accurately controls pretightning force to realize, comfort is improved under the premise of ensureing occupant safety；
" constraint " action refers to the belt-strap for pre-tightening motor and quickly tightening 100-120mm length, when colliding generation
Occupant is fettered as possible, first consumes a part of inertia potential energy before airbag deployment, reduces occupant and air bag, direction
Disk, vehicle body collision when impact injury, to the maximum extent protect occupant life security, wherein the preload length of safety belt according to
Vehicle body velocities, acceleration information are calculated by ECU built-in algorithms；
Reset action refer to automobile by dangerous working condition variation be nominal situation or collision have occurred and that after, release peace
Full band pre-tightens, and loosens belt-strap and is returned to normal position, to meet the comfort or facilitate collision that occupant normally takes
Escape is saved oneself afterwards.
Step 4）, when the danger classes of automobile changes, electronic control unit is by new danger classes and former danger classes
It is compared, if the priority of new danger classes is higher than former danger classes, executes the corresponding preload action of new danger classes, it is no
Then continue to execute the corresponding preload action of former danger classes.
Step 5）If electronic control unit control is pre-tightened after motor executes " early warning " or " adjustment " action and is not collided,
And the danger classes of automobile becomes cancellation signal priority, then electronic control unit control pre-tightens motor and executes Reset action,
Loosen safety belt and reply initial position, to meet the comfort that occupant normally takes.
Step 6）If electronic control unit control pre-tightens, motor executes " constraint " action and collision has occurred, at this time electronics
Control unit, which stops being controlled according to the danger classes of automobile, pre-tightens motor work, but controls and pre-tighten motor after collision occurs
1500ms executes Reset action, to facilitate occupant to escape and prevent it due to safety belt fetters for a long time by secondary injury.
As shown in Fig. 2, the control strategy of the control system is：
Step A）, ECU, which is persistently scanned, receives new signal, and judges new vehicle hazard grade.
Step B）, the priority of newer danger classes and former danger classes, if new danger classes priority is endangered higher than former
The priority of dangerous grade then executes the corresponding preload action of new danger classes of the higher priority；If new danger classes is excellent
First grade is not higher than the priority of former danger classes, then continues to execute the corresponding preload action of former danger classes.
Step C）, cycle execution step A）To step B）.
Those skilled in the art of the present technique are it is understood that unless otherwise defined, all terms used herein（Including skill
Art term and scientific terminology）With meaning identical with the general understanding of the those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with the meaning of idealization or too formal come
It explains.
Above-described specific implementation mode, to the purpose of this utility model, technical solution and advantageous effect carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (1)
1. a kind of leading passively integrated multistage belt with pre-load device control system, which is characterized in that including preceding collision warning systems,
Lane Departure Warning System, driving states sensing module, pilot control sensing module, electronic control unit, preload motor are held
Row module, belt-strap and its fixed mechanism；
The preceding collision warning systems are passed for calculating before automobile to the time to collide, i.e. pre-impact time TTC
Pass the electronic control unit；
The Lane Departure Warning System is used to calculate the time of automobile side angle run-off-road, i.e. pre- deviation time TLC, and by its
Send the electronic control unit to；
The driving states sensing module includes vehicle velocity sensor, vehicle acceleration transducer and crash sensor, wherein
The vehicle velocity sensor, acceleration transducer are placed on the inside of automobile B-column, are respectively used to the speed of monitoring automobile, are accelerated
Degree, and pass it to the electronic control unit；The crash sensor is placed on the inside of automobile front face, is worked as monitoring automobile
It is preceding whether to collide, and pass it to the electronic control unit；
The pilot control sensing module includes brake pedal force sensor and steering wheel angular velocity sensor, wherein described
Brake pedal sensor is placed at brake pedal, the stress size for monitoring brake pedal, and passes it to the electronics
Control unit；The steering wheel angular velocity sensor is placed at vehicle steering wheel, is used for the tarnsition velocity of monitoring direction disk, and will
It passes to the electronic control unit；
The preload motor execution module includes pre-tightening motor and mechanical transmission mechanism, wherein the preload motor is for connecing
Corresponding pre-fastening moment is exported when the control instruction for receiving electronic control unit to the mechanical transmission mechanism, the machine driving
Mechanism is used to tense belt-strap in the case where pre-tightening the driving of pre-fastening moment of motor output；
The electronic control unit respectively with preceding collision warning systems, Lane Departure Warning System, driving states sensing module, drive
The person of sailing manipulates sensing module, preload motor execution module is electrically connected, for according to preceding collision warning systems, lane departure warning
System, driving states sensing module, pilot control sensing module the signal of transmission control the preload motor execution module
Work.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875603.1U CN207955628U (en) | 2017-12-28 | 2017-12-28 | It is a kind of to lead passively integrated multistage belt with pre-load device control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875603.1U CN207955628U (en) | 2017-12-28 | 2017-12-28 | It is a kind of to lead passively integrated multistage belt with pre-load device control system |
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| Publication Number | Publication Date |
|---|---|
| CN207955628U true CN207955628U (en) | 2018-10-12 |
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| CN201721875603.1U Expired - Fee Related CN207955628U (en) | 2017-12-28 | 2017-12-28 | It is a kind of to lead passively integrated multistage belt with pre-load device control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108032856A (en) * | 2017-12-28 | 2018-05-15 | 南京航空航天大学 | It is a kind of to lead passively integrated multistage belt with pre-load device control system and its method |
| CN112606786A (en) * | 2020-12-15 | 2021-04-06 | 东风汽车集团有限公司 | Safety protection method, device and system for electric safety belt |
| CN114715067A (en) * | 2022-03-04 | 2022-07-08 | 浙江吉利控股集团有限公司 | Vehicle, control method and control device thereof, and storage medium |
-
2017
- 2017-12-28 CN CN201721875603.1U patent/CN207955628U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108032856A (en) * | 2017-12-28 | 2018-05-15 | 南京航空航天大学 | It is a kind of to lead passively integrated multistage belt with pre-load device control system and its method |
| CN112606786A (en) * | 2020-12-15 | 2021-04-06 | 东风汽车集团有限公司 | Safety protection method, device and system for electric safety belt |
| CN112606786B (en) * | 2020-12-15 | 2021-12-14 | 东风汽车集团有限公司 | Safety protection method, device and system for electric safety belt |
| CN114715067A (en) * | 2022-03-04 | 2022-07-08 | 浙江吉利控股集团有限公司 | Vehicle, control method and control device thereof, and storage medium |
| CN114715067B (en) * | 2022-03-04 | 2023-11-07 | 浙江吉利控股集团有限公司 | Vehicle, control method and control device thereof, and storage medium |
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Granted publication date: 20181012 Termination date: 20211228 |