CN102285351A - Passenger riding identifying and sensing system - Google Patents
Passenger riding identifying and sensing system Download PDFInfo
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- CN102285351A CN102285351A CN2011102723529A CN201110272352A CN102285351A CN 102285351 A CN102285351 A CN 102285351A CN 2011102723529 A CN2011102723529 A CN 2011102723529A CN 201110272352 A CN201110272352 A CN 201110272352A CN 102285351 A CN102285351 A CN 102285351A
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Abstract
The invention relates to a passenger riding identifying sensor, which comprises more than one sensing loop, wherein each sensing loop is formed by a plurality of sensing points which are connected in parallel, and the two ends of each sensing point are respectively connected with two main connecting lines. The passenger riding identifying sensor is characterized in that the main connecting lines of the sensing loops are respectively provided with a multiplex connecting loop, and the multiplex connecting loops are connected with the main connecting lines in parallel. By the technical improvement provided by the invention, the phenomenon that the existing sensor on the vehicle has more faults can be effectively reduced, the stability of the system is improved, the incidence of the faults of the vehicle can be reduced, and the passenger safety protectiveness of road traffic tools can be strengthened.
Description
Technical field
The present invention is a kind of pressure-type conducting film sensing and detecting system, and its seat that is mainly used in the arteries of communication instrument is taken identification and sensory field.
Background technology
Along with the development of modern arteries of communication tool technique, more and more adopted the occupant safety resist technology in the vehicle safety field.Thereupon, also obtained continuous development, particularly be applied in fields such as vehicle airbag control, safety strap locking about the occupant sensor technology of arteries of communication instrument.
This class occupant takes identification and sensor by to the occupied situation of seat on the vehicle, judges that the safety signal relevant with this seat position with decision export, and then determines such as output alarm signal, presets the air bag state etc. that detonates.
It is to adopt the flexible foils shape pressure switch technology that is positioned at seat to carry out the monitoring that human body exists with technique known type of sensor that this class occupant takes identification.In the time of on human body is present in seat, buttocks pressure directly makes chair surface in-to-in paper tinsel shape pressure-sensitive switch trigger, and then produces the break-make resistance signal output in certain impedance variations scope.According to this signal, the situation that takies of seat is discerned and judged to relevant control loop.
Owing to relate to Vehicle security system, this type of sensor requires to have very high system reliability usually.Therefore, the sensing point regular meeting of sensor spreads under the chair surface substantially, is connected and composed by one and more than one sensing loop.Be the sensing point of assurance sensor and the stability in each loop, what adopt usually is that each sensing point is by carrying out connection mode in parallel under the single earthed circuit.Though it helps to solve the complete detectability of sensor loop conducting, also produced on the sensor any sensing point and/or link circuit and be damaged, all can have influence on the reliability problems of whole sensor.
But actual conditions are; occupant at present road vehicles takes identification and sensory field; such sensor is because the restriction of conventional art; after vehicle uses certain hour; because the effect that the long-term pressure-bearing of seat is jolted, wriggled; near the seat master sits confined area and moulding groove, the sensing point or the loop partial failure of sensor usually can take place particularly, thus the situation that causes systemic-function to lose efficacy.And this class fault alarm usually occurs with the form of associated safety system alarm, has greatly caused vehicle user's puzzlement.In system failure maintenance, also produce very high expense.
The technology that adopts mostly is the mode of carrying out local physics reinforcement at present, carries out the local stiffening processing as pasting modes such as enhancement Layer.But consolidation effect is still not ideal enough, durability still can occur and damage problem.
Summary of the invention
The purpose of this invention is to provide a kind of improved type seating pressure sensor, its be applicable to the seat of arteries of communication instrument take identification and sensory field.
To achieve these goals, the technical solution used in the present invention is: a kind of occupant takes identification sensor, constitute by more than one sensing loop, this sensing loop is made of the sensing point parallel connection of some pressure triggered, the two ends of each sensing point are connected between two main connection leads, it is characterized in that, be equipped with the multiplexing link circuit in parallel with this main connection lead at described sensing loop.
Between the end of described two main connection leads, be connected with the terminal resistance in loop, as the far-end terminal point of this sensing loop.
Occur single point of connection for fear of described multiplexing connection lead in junction, be connected with the multichannel pig-tail wire, and be connected with main connection lead with described multiplexing link circuit respectively at the two ends of this sensing point with sensing point.
Described multichannel pig-tail wire is the setting of radiation direction.
Each sensing point at described sensing loop is parallel with multiplexing sensing point, the multichannel pig-tail wire of the every end of this multiplexing sensing point is connected with main connection lead with described multiplexing link circuit respectively, when some sensing points wherein are damaged, other sensing point can continue to bear corresponding sensing function, and does not cause the forfeiture of this zone sensing function.
The present invention proposes a kind of more failure-free seat and take the technology of identification and sensing; by technological improvement of the present invention; can reduce the existence of this type of sensor fault phenomenon occurred frequently on the vehicle of present production effectively; improve the stability of this system; and then the incidence of this type of fault of reduction vehicle, the occupant safety protectiveness of reinforcement arteries of communication instrument.
Description of drawings
By below with reference to accompanying drawing, according to the description of the embodiment of several non-limiting, the present invention will be clearer, wherein:
Fig. 1 schematically shows the loop-coupled multiplexing and loop structure scheme drawing of Sensor section;
Fig. 2 has illustrated the multidirectional loop of sensing point deriving structure scheme drawing (left side figure is the switching regulator sensing point, and right figure is an impedance variations formula sensing point);
Fig. 3 has illustrated the structural representation of being provided with of multiplexing sensing point in the sensing loop.
The specific embodiment
Fig. 1 has schematically shown the loop-coupled multiplex mode among seat sensor 30 embodiment.Seat sensor 30 is to be made of one and more than one sensing loop 10, and sensing loop 10 is made of such as sensing point 11,12 etc. some.Such as sensing point 11,12 etc. externally the effect of pressure respective impedance will take place and changes in each down, and externally export with the form of resistance variations through sensing loop 10.
In Fig. 1, schematically show the multiplexing compound connection characteristics in loop of sensing loop 10.The outside port 01 of this sensing loop 10 is made of the first connection lead end points 02 and the second connection lead end points 03, the loop is inner through some relatively independent sensing points 11,12, and first main connection lead 04, the second main connection lead 05 and some such as formations such as multiplexing link circuits 21,22.The outside port 01 of this sensing loop 10 (not shown) that links to each other with CCU or control unit.
The end of the whole sensing loop 10 that constitutes at the first main connection lead, 04, the second main connection lead 05 is provided with the terminal resistance 07 in loop, as the far-end terminal point of this sensing loop 10.This end is meant the end away from sensing loop 10 input ends.
Between two main electrical scheme loops 04,05, exist in sensing loop 10 with parallel way such as sensing point 11,12 etc.When any as sensing point 11 by pressure activated, sensing loop non-essential resistance characteristic can be from original loop the resistance of terminal resistance 07, be changed to the triggering resistance value of sensing point 11.
The damage if the main connection lead 04 between sensing point 11 and the sensing point 12 opens circuit, owing to present the effect of redundancy backup each other of parallel multiplexing connection lead 21 on electric, total loop can not take place and open circuit in whole sensing loop 10.In the electric performance of the outside port 01 of this sensing loop 10, impedance is the resistance of the terminal resistance 07 in loop when still showing non-triggering state.
Preferably, above-mentioned multiplexing connection lead 21 carries out avoiding the zone close or parallel with main connection lead 04 on the route layout of sensor 30, and then can avoid because the pretending with existing together of causing, simultaneously physical damage of local external force.
Shown in Fig. 2, for fear of such as multiplexing connection lead 21 in the line layout of sensing loop 10 occurring single point of connection respectively with junction such as sensing point 11, it is adopted such as multirouting lead-out modes such as pig- tail wires 31,32,33,34,35,36.Sensing point 11 multiroutings, multi-aspect the drawing of different trends and are connected with main connection lead 04 such as multiplexing connection lead 21.
As Fig. 3 example the local redundancy setting of sensing point 11 in the sensing loop 10.For sensing point 11, except that main connection lead 04,05, also has multiplexing connection lead 21,22.They constitute sensing point 11 being electrically connected in sensing loop 10 jointly.
If 4 pig-tail wire opening circuit property damages fully in its annulus place in the legend take place sensing point 11, because the bypass of multiplexing connection lead 21,22, being electrically connected still of sensing loop 10 can be walked around sensing point 11, continues to keep the conduction of sensing loop 10.
Preferably, the redundancy setting of sensing point 11, should with the high strength pressure-bearing point of seat and/or rapid wear spot correlation connection, and be connected with route that multiplexing connection lead 21,22 keeps having otherness.
Be connected with the single single line of each loop sensing point of conventional seat pressure sensor and compare, the present invention has adopted the interconnection technique in multiplexing connection lead (loop).In the application of the interconnection technique of this multiplexing link circuit, by to the vehicle long-term use time variously jolt, under the creeping effect to the pressure-bearing function analysis of seat, need the zone of key protection to adopt the multiplexing set composite mode of distributing multirouting at sensor, reduce because the external strength effect causes partial failure, and then cause the entirely ineffective possibility of whole sensing loop.
The some paper tinsel type pressure switch type sensing points (belonging to prior art) that are ordered state of distribution on the sensor, sensing point has electric break-make and/or impedance conversion character, in order to be indicated in the variation of its truth state under the external pressure effect.
Should be noted that what the interconnection technique of multiplexing set composite of the present invention adopted is the multiplexing link circuit mode of multirouting.This can be created in the use zone of multiplexing link circuit may adopt the multiplexing type of attachment in two or more loops, the loop of the different routes in relating to the zone processing that is connected in parallel just.
The loop of the different routes in this zone is connected in parallel and has played the multiplexing effect in the loop in this zone.The inefficacy that single loop in this zone on any one route takes place, since multiplexing other shunt circuits the time in this zone, can't exert an influence to this zone fgn integral body connectivity.
The reinforcement of this galvanic circle, zone reliability that the parallel connection type type of attachment of this multiplexing link circuit can cause does not influence the framework of continuity sensor bulk loop, but is different from the framework of single earthed circuit.
Match with being connected of multiplexing link circuit, being connected of multiplexing loop carried out with each sensing point of seat sensitive zones in the galvanic circle.In the present invention, sensing point has adopted the multi-aspect connection lead-out process of multirouting, has strengthened the connection reliability that sensing point is drawn the loop.
Be appreciated that multiplexing set composite and sensing point multirouting multi-aspect be connected to draw match, can carry out electric bypass to part sensing point and sensitive zones.The part inefficacy of opening circuit as taking place in the sensing point that carries out electric bypass, sensor loop can be connected to the sensing point on next door by electric bypass, utilize the loop of next door sensing point to connect the connection that can continue to realize the sensor bulk loop, this has just played the effect that increases sensing point loss of redundancy backup.
Should be appreciated that, take the setting of the multiplexing sensing point in the focus detecting area territory of pressure-bearing at seat occupant, can strengthen the reliability of the durable use of sensing point of regional area.By the setting of multiplexing sensing point, efficiently solve in the past in the sensor loop because single line connects, when inefficacys of opening circuit of any sensing point line, just very likely cause the possibility of sensor global failure.
Preferably, occur the shortcoming of single point of connection for fear of multiplexing link circuit in the sensing point junction in the line layout of sensor, described sensing point has adopted and has produced the multi-aspect connection lead-out mode of the multirouting of drawing feature in multidirectional loop.It has not only saved the consumption of noble metal the sensing point of process optimal design, the more important thing is the reuse plan of the line of having realized single sensing point.Simultaneously also carried out the optimization of conductive node design-calculated, strengthened the break-make durability of sensing point at the pressure-bearing characteristics of sensing point.
In order further to strengthen the reliability of sensing system, system is provided with terminal resistance at the bulk loop end of sensor.So promptly constitute a closed loop with certain electrical impedance feature at sensor internal on bulk loop, system time is monitored the on off mode of this closed loop, and with this as the whether complete foundation of whole sensing loop.
Be appreciated that by the integraty of whole sensing loop conducting is monitored, further guaranteed the detectability when sensor opens circuit problem in the total system.And then strengthened reliability, the stability of whole sensor-based system, strengthened the validity of associated occupant security system application, in the time of can effectively reducing and alleviate the arteries of communication instrument and have an accident to occupant's extent of injury.
Claims (5)
1. an occupant takes identification sensor, constitute by more than one sensing loop, this sensing loop is made of the sensing point parallel connection of some pressure triggered, the two ends of each sensing point are connected between two main connection leads, it is characterized in that, be equipped with the multiplexing link circuit in parallel with this main connection lead at described sensing loop.
2. occupant according to claim 1 takes identification sensor, it is characterized in that, is connected with the terminal resistance in loop between the end of described two main connection leads, as the far-end terminal point of this sensing loop.
3. occupant according to claim 1 takes identification sensor, it is characterized in that, in the junction with sensing point single point of connection appears for fear of described multiplexing connection lead, be connected with the multichannel pig-tail wire at the two ends of this sensing point, and be connected with main connection lead with described multiplexing link circuit respectively.
4. occupant according to claim 3 takes identification sensor, it is characterized in that, described multichannel pig-tail wire is the setting of radiation direction.
5. occupant according to claim 3 takes identification sensor, it is characterized in that, each sensing point at described sensing loop is parallel with multiplexing sensing point, the multichannel pig-tail wire of the every end of this multiplexing sensing point is connected with main connection lead with described multiplexing link circuit respectively, when some sensing points wherein are damaged, other sensing point can continue to bear corresponding sensing function, and does not cause the forfeiture of this zone sensing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102723529A CN102285351A (en) | 2011-09-15 | 2011-09-15 | Passenger riding identifying and sensing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102723529A CN102285351A (en) | 2011-09-15 | 2011-09-15 | Passenger riding identifying and sensing system |
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| CN102285351A true CN102285351A (en) | 2011-12-21 |
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| CN2011102723529A Pending CN102285351A (en) | 2011-09-15 | 2011-09-15 | Passenger riding identifying and sensing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951111A (en) * | 2012-10-23 | 2013-03-06 | 廊坊市金色时光科技发展有限公司 | Seat occupation recognition device and method and automotive seat |
| CN104108357A (en) * | 2013-04-18 | 2014-10-22 | 福特全球技术公司 | Occupant Presence Detection And Identification |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19722163A1 (en) * | 1996-05-29 | 1997-12-04 | Aisin Seiki | Seat-occupancy detection arrangement for registering person sitting on vehicle seat |
| EP0850154B1 (en) * | 1995-09-12 | 1999-05-19 | I.E.E. International Electronics & Engineering S.à.r.l. | Detecting device for vehicle seats |
| CN1690730A (en) * | 2004-04-28 | 2005-11-02 | 株式会社电装 | Sitting sensor for vehicle |
| CN1813325A (en) * | 2003-06-23 | 2006-08-02 | Iee国际电子及工程股份有限公司 | Pressure sensor in the form of a film |
| CN201553120U (en) * | 2009-11-18 | 2010-08-18 | 上海振运电子科技有限公司 | Passenger weight sensing system for seat |
| CN101881841A (en) * | 2009-05-08 | 2010-11-10 | 株式会社电装 | Seat sensor |
-
2011
- 2011-09-15 CN CN2011102723529A patent/CN102285351A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0850154B1 (en) * | 1995-09-12 | 1999-05-19 | I.E.E. International Electronics & Engineering S.à.r.l. | Detecting device for vehicle seats |
| DE19722163A1 (en) * | 1996-05-29 | 1997-12-04 | Aisin Seiki | Seat-occupancy detection arrangement for registering person sitting on vehicle seat |
| CN1813325A (en) * | 2003-06-23 | 2006-08-02 | Iee国际电子及工程股份有限公司 | Pressure sensor in the form of a film |
| CN1690730A (en) * | 2004-04-28 | 2005-11-02 | 株式会社电装 | Sitting sensor for vehicle |
| CN101881841A (en) * | 2009-05-08 | 2010-11-10 | 株式会社电装 | Seat sensor |
| CN201553120U (en) * | 2009-11-18 | 2010-08-18 | 上海振运电子科技有限公司 | Passenger weight sensing system for seat |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951111A (en) * | 2012-10-23 | 2013-03-06 | 廊坊市金色时光科技发展有限公司 | Seat occupation recognition device and method and automotive seat |
| CN102951111B (en) * | 2012-10-23 | 2015-10-28 | 廊坊市金色时光科技发展有限公司 | A kind of passenger riding means of identification and method and automotive seat |
| CN104108357A (en) * | 2013-04-18 | 2014-10-22 | 福特全球技术公司 | Occupant Presence Detection And Identification |
| CN104108357B (en) * | 2013-04-18 | 2019-01-18 | 福特全球技术公司 | The existing detection of occupant and identification |
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Application publication date: 20111221 |