CN101865663A - Account for the pick-up unit and the detection method of a rate - Google Patents
Account for the pick-up unit and the detection method of a rate Download PDFInfo
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- CN101865663A CN101865663A CN201010163367A CN201010163367A CN101865663A CN 101865663 A CN101865663 A CN 101865663A CN 201010163367 A CN201010163367 A CN 201010163367A CN 201010163367 A CN201010163367 A CN 201010163367A CN 101865663 A CN101865663 A CN 101865663A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
- G01V8/16—Detecting, e.g. by using light barriers using one transmitter and one receiver using optical fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/015—Electrical 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 the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
- B60R21/01512—Passenger detection systems
- B60R21/01516—Passenger detection systems using force or pressure sensing means
- B60R21/0152—Passenger detection systems using force or pressure sensing means using strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
- G01G19/413—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means
- G01G19/414—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
- G01G19/4142—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only for controlling activation of safety devices, e.g. airbag systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/125—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing wherein the weighing element is an optical member
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
- G01M11/083—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT]
- G01M11/086—Details about the embedment of the optical fiber within the DUT
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Seats For Vehicles (AREA)
- Geophysics And Detection Of Objects (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
For to seat, especially the personnel of automobile seat account for a rate and detect more reliably, the invention provides a kind of pick-up unit (12) and detect seat (1), especially vehicle seat or automobile seat (2) accounts for a rate, described pick-up unit (12) comprises at least one elongated photoconduction (14), described photoconduction (14) has at least one elongated core body (29) and at least one and described core body elongated sheath (28) separated by a distance, wherein, under Mechanical Driven instrument (19) effect, photoconduction (14) is made light be arranged in photoconduction (14) ejaculation of an opposite described side of described Mechanical Driven instrument (19) along at least one the direction distortion perpendicular to photoconduction (14) longitudinal axis owing to seat occupies the distortion that causes.
Description
Technical field
The present invention relates to a kind of detection seat and account for a rate, especially the pick-up unit that accounts for a rate and the detection method of the seat of the vehicles or motor vehicles, it comprises at least one elongated photoconduction, described photoconduction has at least one elongated core body and at least one and described core body elongated sheath separated by a distance, wherein said photoconduction can be along at least one direction distortion perpendicular to the photoconduction longitudinal axis under the Mechanical Driven instrumental purpose, and the distortion that is occupied the photoconduction that causes owing to seat makes light penetrate from the photoconduction of the opposite described side that is arranged in described Mechanical Driven instrument.
Background technology
Particularly in automotive industry, whether common seat often has been used to detect reliably on the seat take, so that people's function such as control example such as air bag optimally.
Summary of the invention
The objective of the invention is to further develop a kind of pick-up unit that accounts for a rate and detection method of machines motor vehicle seat.
The objective of the invention is to account for by a kind of seat that detects that the pick-up unit of a rate and detection method realize, wherein, whether can detect by pick-up unit and to take in chair portion, the pick-up unit in the described chair portion comprises that the optical detection personnel account for the instrument of a rate, for example photoconduction.
Owing to directly provide at least one photoconduction in the chair portion, can guarantee that the detection that obtains accounting for a rate is comparatively reliable, so the possibility that fault takes place can significantly reduce.Say that to a certain extent if the reliable detection to accounting for the clear of a rate is depended in the control of safe relevant apparatus or adjustment, the reliable detection that accounts for a rate so concerns life, and is most important.
Described term " seat " comprises the various seat units that the people can take here.For example, seat also can be used aboard.But, more now seat is the seat that is used as vehicular traffic or motor vehicles in the traffic of land.More generally, described seat has a chair portion, and people can directly be sitting in the chair portion.More preferably, described seat also comprises a chair back, thereby the people can lean against on the chair back and supported by seat safely.
Be understandable that optical inspection tool not only comprises the described photoconduction in the chair portion that can various forms be located at seat, comprise that also inner other transmit and receive device.
Utilize the deformable photoconduction, its optical property plain mode is especially carried out the variation or the modulation of architectural feature, and wherein, the intensity of variation of optical property can be used as the sign that seat is taken or the no one sits.
Further, in this situation, utilize described photoconduction to determine to detect whether seat take accounts for a rate pick-up unit whether defective is arranged with the very simple and reliable mode of structure.If be damaged owing to be used to conduct the electromagnetic circuit that sends from a respective detection device, this defective will exist.But, in this situation, be used to detect account for a rate optical tooling such as the deformable photoconduction, very possible determine directly whether this deformable photoconduction is damaged.If be damaged, will no longer include light and pass described photoconduction, correspondingly can not detect light in the outlet of described photoconduction.Yet if the deformable photoconduction does not damage and just crooked or knotting, the light of having a surplus at least usually still can arrive the outlet of deformable photoconduction.As long as these surplus luminous energy are detected at outlet side, can think that then the instrument that described optical detection accounts for a rate is int.This just has clear superiority with regard to classic method well known in the prior art.Therefore also can be used as instrument checks that those detections account for the pick-up unit of a rate to photoconduction of the present invention.
Better is that the deformable photoconduction comprises one or more optical fiber as core body, makes electromagnetic wave, especially visible light can pass described deformable photoconduction in this way.This core body can be such as the step-refraction index rate optical fiber that is dirt cheap.
For instance; the core body and the sheath of this photoconduction are spaced apart; it for example is vacuum that described sheath is looped around the volume that forms around the described core body; or by protective gas; preferably nitrogen or argon gas occupy to be used for reducing because the material stress that active oxygen species produces perhaps can be filled with air.The light that is coupled into the entrance side of described deformable photoconduction it is desirable to pass the core body outlet that arrives described deformable photoconduction along described core body inside according to total reflection principle, and described light can be detected in the exit.If because after seat taken by the people, the variation such as the bending of very big degree takes place in described photoconduction, will seriously be reduced to below the necessary limit angles of total reflection, and a part of light that has at least in the deformable photoconduction can not reflect in the mode that can arrive the outlet of deformable photoconduction.If detectable light reduces to below the predetermined threshold value, then have and very largely may infer that described seat is to have taken up.Therefore described optical inspection tool can design very simply.
In addition, if the deformable photoconduction is owing to the people takes the distortion that very big degree takes place seat, distance between then described sheath and the core body also can continue to reduce because of physical changes of environment, best is to cause reducing of the two distance by the Mechanical Driven instrument, up to finally the two directly realizes contact.This contact causes catoptrical energy to be absorbed, thereby reduces the signal intensity that arrives described photoconduction outlet.When the total reflection of core body interface, behind the interface, can form electromagnetic near field, this fact causes that probably energy of reflection light is absorbed.When described photoconduction deforms, this near field is overlapping by the molecule of described sheath, and sheath becomes the scattering center in described near field then, and thitherto sheath is static, and energy-absorbing correspondingly, and these energy are constantly from from drawing in the light the core body.
If detectable light is brought down below a predetermined threshold value, then has and to infer that greatly described seat taken.Described this predefine threshold value that detects light is passable, for example by be sitting in seat on the mode that cooperates of people's weight select.If for example an individual weight is that the child of 30kg is sitting on the driver's chair, detected light intensity with respect to the light intensity of load seat not relatively a little less than, in any case but also can not be higher than an adult is sitting in situation on the seat.If light intensity is not reduced to below the predetermined threshold, electronic equipment also remains and can not start as an integral body on the machine, and for example, child can not start vehicle.Further, what can know is that preferable this depends on the time below dropping to the predefine threshold value.For example, for electronic equipment on the starter motor, described light need drop under the predefine threshold value in one relatively long period constantly.Like this, jump can not the described vehicle of error starting even child plays on the seat.
Further, this optical fiber is embedded in the flexible shroud of deformable photoconduction, makes several strong points that described optical fiber only passes through seldom under normal condition contact with described flexible shroud, and this normal condition that is to say, is in the state that chair portion is not occupied.In this case, nearly all light that is coupled into the entrance side of described deformable photoconduction all can be detected at the outlet side of deformable photoconduction.Yet if make the distortion of deformable photoconduction owing to the people takes chair portion, described optical fiber will contact at a plurality of contact points or at a relatively large surf zone with flexible shroud, and this will make the described light that is coupled into oral-lateral can be coupled out the outside of described optical fiber.Therefore, the described light that originally is coupled into can not be detected at outlet side fully, but can only detect a very faint part.These can be advantageously used for loaded proof in the chair portion at the detected faint light of outlet side very much.Thereby, account for a rate and also can be detected reliably.
When the light that passes described photoconduction incides interface between a transition medium or two media of incident with the angle less than total reflection limit angle, the outer light of described core body this moment can obtain best coupling, in this case, there are three interface situations, comprise optical fiber → air, optical fiber → optical fiber jacket and optical fiber → optical fiber insulation sleeve.
For these three transition interface, each situation all has a total reflection limit angle separately, and this fundamentally depends on the light refractive index of the different medium of abutment, especially in the transmission from the optically denser medium to the optically thinner medium.
Under the state that seat surface is not sat, owing to also do not touch its fiber sheath, when then being difficult to the photoconduction in the seat surface positioned, can utilizing this moment and thisly export less than the coupling under the angle at total reflection limit angle.
Therefore, the present invention also can be by a kind of seat especially shaped traffic device or motor vehicles the detection method that accounts for a rate of seat realize, whether described method can detect takes in the chair portion of seat, wherein, owing in the zone of chair portion, the light that passes photoconduction is modulated, thereby can be detected the rate that accounts for that the people takes seat.
In this situation, if scattering (if modes are scattered) to make, the mould in the above-mentioned deformable photoconduction can not form the light of concentrating intensity at outlet side, will help realizing suitable modulation.
Except the light that will pass described deformable photoconduction carries out scattering or pulse strenching, can be used for equally showing in the formed light intensity in the end of deformable photoconduction do not occupied, the someone accounts for seat and/or photoconduction defectiveness.
Therefore, by this modulation, can reliably, especially can detect especially apace and whether take in the chair portion of seat.Particularly reduce to a specific threshold value when following when the light of entrance side coupling at outlet side, being easy to infer on this seat has the people to account for seat.
In addition, for better detection, it will be very enough that three sensing ranges for example are provided.For example, set a first threshold that does not account for seat, set such as minimum strength based on scattering of light.The maximum intensity that is higher than predetermined scattering of light, described seat must someone account for seat.As mentioned before, if no longer may detect any light, then being easy to judge is to have defective.
Preferably, optical detection accounts for instrument initialization before paying of a rate, so that define a crucial alone threshold value well.This is because only be positioned at bend mode in the described chair portion or inner at described deformable photoconduction, just might distinguish the light that passes the deformable photoconduction at the entrance side and the outlet side of deformable photoconduction.Therefore, if the light intensity decreasing that will be caused owing to installation, location and the prestrain of deformable photoconduction in manufacture process can both take into account, final measurement, check and storage appropriate thresholds will be very favourable.
Therefore, also can provide a preferable optional method.Optically-coupled is entered at least one optical fiber of deformable photoconduction in the chair portion and go, wherein, under the situation of the occupied certificate of seat, the not reflection and/or from least one optical fiber, be coupled out very fully in the deformable photoconduction of the light of part coupling.If the light that is coupled into to small part at least one optical fiber in the deformable photoconduction is coupled out, accounts for the available in the method very simple and reliable mode of a rate accordingly and detect optically.
If, for example being reduced to below the total reflection limit angle in the deformable photoconduction, the light that is coupled into the deformable photoconduction at entrance side only can not be detected fully at outlet side.In the present invention, according to total reflection principle, described photoconduction has advantage especially using and operate.
In further preferred embodiment, personnel's an actual rate that accounts for can detect very definitely, and difference can be accounted for a rate and make a distinction reliably, for example the rate or similarly of accounting for of bag.In this case, if for part being optical coupling out at least one optical fiber, with the photoconduction distortion, preferably crooked or knotting repeatedly, then present embodiment will have advantage.Particularly, if the deformable photoconduction carries out repeatedly desirable crooked or knotting, can detect reliably personnel actual chair portion account for a rate.Especially, utilize the repeatedly crooked or knotting of deformable photoconduction, can guarantee to reach the total reflection limit angle of deformable photoconduction, as previously mentioned, and/or described at least one optical fiber contacts at a plurality of points with the flexible shroud of deformable photoconduction, thereby on enough big whole surf zone, contact.Therefore, the light that is coupled into also can be coupled out at least one optical fiber to a great extent, so that can arrive (undershot) reliable crucial threshold value at outlet side.
Thus, in another particularly advantageous method distortion, the difference of light quantity and/or light quality is determined between the entrance and exit of deformable photoconduction.
For example, can only detect the light of part in entrance side coupling based on the outlet side at the deformable photoconduction, advantageously the personnel of detecting account for a rate, wherein, can obtain the relevant conclusion that accounts for a rate according to the difference of light quantity.
In addition can be, also can determine light quality maybe for what replace at outlet side in order to ensure the corresponding reliable detection that accounts for a rate.The for example appropriate distortion by photoconduction can be coupled out the spectrum of certain frequency or wavelength, like this, just can not detect described spectrum again at the outlet side of deformable photoconduction.
Be understandable that this pick-up unit can comprise a suitable equipment that is used for determining this difference and/or monitors corresponding crucial threshold value.
In addition, advantageously, this photoconduction preferably is arranged in the padded coaming otch of under-seat of seat cushions to small part.Simultaneously, this makes photoconduction the principle stress point that covers seat surface, is preferably the seat side surface to be set flexible way rightly.In order when the people accounts for the situation of seat, to determine reliably that at deformable photoconduction outlet side other relate to the value of the coupling light inlet of entrance side, if pick-up unit comprises that also the instrument of the optical conductivity that is used to modulate photoconduction will be more favourable.
In this respect, if pick-up unit comprises the instrument of the instrument of Mechanical Driven photoconduction in particular for the photoconduction distortion, can be more favourable.These Mechanical Driven instruments and/or warp tool will help assisting or increasing distortion or the crooked or knotting with described photoconduction with very simple mode on the structure.Even relatively lighter people is sitting in the chair portion of seat and also can be detected.
In the preferable variant embodiment, described Mechanical Driven instrument and/or warp tool have elevated regions (raised region), and described elevated regions is towards photoconduction.For example, when seat is occupied or the deformable photoconduction pushed recess between the elevated regions, can utilize this elevated regions to move fully crooked this deformable photoconduction towards described Mechanical Driven instrument by making this deformable photoconduction pass seat cushions.Specifically, utilize described elevated regions can realize the local finite distortion, therefore, the degree of accuracy that detects a rate that accounts for can further improve.
In addition, preferably, at least a portion of at least one photoconduction utilizes bracing or strutting arrangement to fix, and this bracing or strutting arrangement comprises that specific shaped as frame and/or band shape system support described photoconduction.These bracing or strutting arrangements are preferably made with plastics and/or metal, are used for additionally firm optical element to prevent distortion, to move position or physical damage.Although seat is frequently used, the also detection that can obtain continuous high-quality even account for a rate for a long time.The shaped as frame system can be circular or also the angle can be arranged, and the best is square, and wherein geometric configuration is preferably based on the geometry of described photoconduction.
In addition, be known that these shaped as frame systems can almost surround described photoconduction, and only on the surface of the principle stress point of seat, be provided with cushion pad especially that described cushion pad is directly towards the upside of seat.These seat cushions can be round, also can the side of being.Be positioned at the relative inner of shaped as frame system with the elevated regions of these cushion pad couplings, so that under the situation that has seat to be occupied, can the photoconduction part that be positioned at wherein be out of shape.Because the existence of the cushion pad of shaped as frame system, the distortion of photoconduction only occurs on the specific point, and does not make whole photoconduction distortion.
In addition, the orbit-shaped system also can be used as bracing or strutting arrangement, and wherein, track herein is preferably and is designed to guide rail, is used for guiding the photoconduction of at least one side.Associate member can be set for example to be used for photoconduction is advanced track, wherein the inboard that faces photoconduction of orbit-shaped system has the Mechanical Driven instrument, described Mechanical Driven instrument under the situation that seat is sat with photoconduction distortion, and make light from photoconduction from outgoing, thereby cause weakening of signal.Preferably, described bracing or strutting arrangement is in the cushion pad of seat cushions and/or be arranged between the downside and substrate of seat cushions.
For different configurations, can provide suitable Mechanical Driven instrument and/or suitable warp tool accordingly.Consider the convenience of seat, if described Mechanical Driven instrument and/or warp tool are made the constructional simplicity of retaining device to a great extent then with the substrate of chair portion.
Correspondingly, consider from this respect, the embodiment of another distortion can be provided, and it provides a replacement band (switching strip) that is used for replacing described photoconduction, and described replacement band is made with the panel beating shell (sheet-metalshell) of fold or the chair portion substrate of fold.Like this, described drain pan or substrate only need be folds.Can adjust the susceptibility of existing pick-up unit by crimp shape.
If described photoconduction is arranged between chair portion substrate and the chair portion surface, for example, can without lifting an eyebrow the deformable photoconduction be pushed to the substrate of a suitable shape, and if taken during the course on chair portion surface, the deformable photoconduction can be bent.
If described photoconduction is at least partially disposed in the seat cushions of described chair portion, then described photoconduction also can be incorporated in the seat.In this case, especially the deformable photoconduction can pass seat cushions, for example around seat cushions.
As for another kind of structure, the deformable photoconduction also can be arranged on below the seat cushions and thereby between the substrate of the seat cushions of chair portion and chair portion.
Yet more favourable situation is, the deformable photoconduction can also be positioned at seat cushions, can be subjected to better protection and prevents physical damage because be positioned at seat cushions.
In order to make the deformable photoconduction only need the very little power just can be with its bending or knotting, if chair portion comprises seat cushions, seat cushions has the padded coaming otch so, for the Mechanical Driven instrument of described photoconduction setting and/or the elevated regions of warp tool are arranged in the described padded coaming otch.
In order optically-coupled to be entered the entrance side of deformable photoconduction on the one hand, can determine simultaneously the light of the outlet side of described deformable photoconduction on the other hand, if pick-up unit comprises emission and/or receiving trap, wherein particularly emitter has optical transmitting set and receiving trap has photo-detector, can be more favourable.This emission and/receiving trap also can separate with existing seat and as a component independently, photoconduction then of the present invention must be provided with in place with respect to such independent transmission and/or receiving trap and go up.
Description of drawings
The further advantage of the present invention, purpose and characteristic will be with reference to the accompanying drawing that the describes below explanations that makes an explanation, and for example, described accompanying drawing shows that automobile seat comprises that optical detection accounts for the instrument of a rate.
In the accompanying drawing:
Fig. 1 schematically shows the skeleton view of automobile seat, and described seat comprises chair portion, the chair back and be arranged on pick-up unit in the chair portion that described pick-up unit comprises that the optical detection personnel account for the instrument of a rate;
Fig. 2 is the cut-open view of the seat cushions of the chair portion of displayed map 1 schematically, and wherein photoconduction is incorporated in the seat cushions;
Fig. 3 a and 3b show the summary side view of the photoconduction with core body and sheath;
Fig. 4 schematically shows the cut-open view of seat cushions shown in Figure 2;
Fig. 5 schematically displayed map 2 and seat cushions shown in Figure 5 is having the people to load thereon cut-open view;
Fig. 6 schematically shows the view of another seat cushions below, described seat cushions have a kind of under may mounting means the deformable photoconduction and a kind of mode of possible contact area for easier contact deformable photoconduction;
Fig. 7 schematically shows the deformable photoconduction that transmits and receives device with light; With
Fig. 8 shows that schematically another is integrated with the upward view of the seat cushions of deformable photoconduction.
1 seat
2 automobile seats
3 chair portions
4 chair back
5 right handrails
6 left handrails
7 bracing frames
8 substrates
9 seat cushions
10 seat surfaces
11 personnel
12 pick-up units
13 optical inspection tools
14 deformable photoconductions
15 transmit and receive device
16 inlets
17 outlets
The instrument of 18 light modulated conductances
19 Mechanical Driven instruments
20 substrates
21 elevated regions
22 replace band
The padded coaming otch of 23 elevated regions
24 load arrows
28 sheaths
29 core bodys
The padded coaming otch of 30 photoconductions
109 seat cushions
125 downsides
126 deformable photoconduction circles
127 active regions (active region)
214 deformable photoconductions
215 transmit and receive device
216 inlets
217 outlets
226 deformable photoconduction circles
309 seat cushions
314 deformable photoconductions
323 padded coaming otch
330 shaped regions
Embodiment
Can find out clearly that from the icon of Fig. 4 and Fig. 5 chair portion 3 comprises substrate 8, substrate 8 is provided with seat cushions 9.Utilize chair portion 3 and seat cushions 9 can form a comfortable seat surface 10.The personnel 11 for example driver of commerial vehicle (not shown) can be sitting in above the seat surface 10.
In order can to detect in the chair portion 3 that whether has personnel 11 to be sitting in seat 1 practically automatically thereby seat 1 is taken by personnel, described seat 1 further has and is used to detect the device 12 that seat is taken by personnel.
Can further know clearly from Fig. 2 to Fig. 5, according to the present invention, pick-up unit 12 comprise be used for the optical detection seat by personnel account for the seat instrument 13, in this illustrative examples, described tool configuration is a deformable photoconduction 14.Utilize deformable photoconduction 14, on the one hand, when seat has the people to account for, the deformable photoconduction is out of shape under personnel 11 load, the feasible thus light that passes deformable photoconduction 14, especially according to total reflection limit angle principle or also because the cause that absorbs correspondingly changes when it passes deformable photoconduction 14, therefore can very simple and reliable mode detect seat and whether occupied by personnel.Or whether on the other hand, also can very simple and reliable mode detecting deformable photoconduction 14 has damage, and the light beam that enters deformable photoconduction 14 is in this case blocked fully.
In order to produce and detect deformable photoconduction 14 necessary light, pick-up unit 12 further possesses the device of transmitting and receiving 15.The transmitter unit that transmits and receives device is used for light is injected the inlet 16 of deformable photoconduction 14, and the receiving element that described utilization transmits and receives device 15 detects the light that passes deformable photoconduction 14 at outlet 17 places of deformable photoconduction 14.At least, when seat is occupied by the people, because the distortion of photoconduction 14 is different on light quantity and/or light quality at inlet 16 and outlet 17 light that go out, can be by transmitting and receiving the apparatus for evaluating (not shown) that device 15 sends to the downstream based on the corresponding electric signal of this generation.
For deformable photoconduction 14 can be out of shape rightly, and the conduction of deformable photoconduction 14 can change thereupon, and pick-up unit 12 also has the device 18 of the optical conductivity that is used to modulate photoconduction 14.
Be carried in as personnel 11 on the seat cushions 9 of described chair portion 3 it fully is deformed to a certain degree, then deformable photoconduction 14 can obtain sufficient good distortion.This draws closer together sheath and core body, and it preferably makes the absorbed intensity of losing simultaneously of catoptrical energy.In this case, seat cushions 9 forms modulation instrument 18.As the embodiment that exemplifies shown in, particularly be embedded into situation in the seat cushions 9 at deformable photoconduction 14.
Yet, when having the people to account on the seat, for deformable photoconduction 14 always is out of shape in reliable especially mode, the preferably also additional instrument that is used for the described photoconduction 14 of Mechanical Driven that is equipped with of pick-up unit 12, wherein, Mechanical Driven instrument 19 herein also can be regarded the instrument that is used to be out of shape this photoconduction 14.
Shown in Fig. 3 a is the side view of seat 1, and described seat 1 has seat cushions 9 and photoconduction 14, and photoconduction 14 comprises core body 29 and surrounds the sheath 28 of described core body 29.It is relative with padded coaming otch 30 that Mechanical Driven instrument 19 is arranged to, and Mechanical Driven instrument 19 is designed to can be static but also can move, and and photoconduction 14 between be separated with certain distance.The side view of seat under the situation that photoconduction 14 is out of shape owing to seat occupies of Fig. 3 b displayed map 3a, this occupy-place occurs in the direction of load arrow 24 indications, wherein, be the moment of having a rest at this moment for example, seat is occupied causes photoconduction 14 integral body to be pushed to Mechanical Driven instrument 19.In this case, core body 29 and sheath 28 preferably make the distance between them reduce to be out of shape up to the mode that they directly contact with a kind of.This will cause the luminous energy of core body 29 to absorb, in an advantageous embodiments, Mechanical Driven instrument 19 can be realized with the very simple form of structure with the substrate 20 of fold, described substrate 20 makes outlet 17 places of photoconduction 14 produce the signal minimizing, thereby the relevant reliably information that accounts for a rate can be provided.
Further, in an advantageous embodiments, Mechanical Driven instrument 19 can realize that with very simple version therefore, it can be used as the existing assembly of seat 1 with the substrate 20 of fold.
In this case, substrate 20 formation of fold are towards the elevated regions 21 of photoconduction 14.The replacement that is used to replace deformable photoconduction 14 can be saved most space with the 22 chair portions 3 that are set at seat 1.
In the present embodiment, elevated regions 21 is arranged in the zone of padded coaming otch 23, makes that elevated regions 21 can be very effectively and contacting that deformable photoconduction 14 enlivens.Especially when personnel 11 when the direction of load arrow 24 is pressed on the seat cushions 9, deformable photoconduction 14 therefore can local at least repeatedly distortion or around elevated regions 21 bendings that provide, therefore, the conduction of at least one optical fiber (not shown) of the conduction of deformable photoconduction 14, especially deformable photoconduction 14 can change.
At the downside 125 of another seat cushions 109 shown in Fig. 6 shade, roughly demonstrated a kind of position of possible deformable photoconduction circle 126.In this case, can corresponding padded coaming otch 23 be set, be used for the distortion of promotion personnel deformable photoconduction circle 126 in four active regions 127 (only illustrative numbering) (seeing Fig. 3 and 4) that diagram is emphasized.
Common deformable photoconduction circle 226 as shown in Figure 7.Deformable photoconduction circle 226 provides leaded light length to be about 2m, and wherein the inlet 216 of deformable photoconduction 214 and outlet 217 are led to and are connected to rightly and transmit and receive device 215.Because the leaded light length of about 2m is too short, a kind of step index fiber of cheapness any problem can be able to not appearred as the photoconduction (not shown).
In the seat cushions shown in Fig. 8 309, deformable photoconduction 314 is embedded in the seat cushions 309 in mode bendingly, and directly from the outside as can be seen, deformable photoconduction 314 is basically only on padded coaming otch 323.Therefore, deformable photoconduction 314 can distortion especially well in the zone of padded coaming otch 323.Can see clearly that shaped region 330 is located on the seat cushions 309, in this shaped region 330, also be provided with the counterpart substrate of seat.As indicated above, in this case, the elevated regions on the substrate can be followed this deformable photoconduction 314 of direct arrival, thus the repeatedly distortion of aggravation deformable photoconduction 314.
It is contemplated that in principle basic concept of the present invention is made amendment.For example, described replacement band or a plurality of replacement band may be used for replacing the deformable photoconduction.This replacement band is a strip, and its inside has the inner chamber that forms one with their profile.In this case, two conductive area spaced apart from each other are arranged to a top that is positioned at another in the mode of band shape, even if be arranged so that like this replacing band is subjected to very little pressure or very little distortion, conductive area will be in contact with one another and cause short circuit then, therefore generation is connected the signal of apparatus for evaluating.
Identical with photoconduction, this replaces the foamed material that band can be positioned at the seat surface of seat, and according to the shape in the plate zone of seat surface distortion is arranged on specific point, has to electrically contact on these aspects.Cause that owing to seat surface is occupied replacing band inside comes in contact or short circuit.
This replacement band carries out electricity operation according to the closed circuit principle, for example, detects that broken cable is then any to cause dangerous moving all to stop.Usually, the maximum voltage that this replacement ribbon gymnastics is done is 24V DZ, and maximum current is 10mA.Its skin is made with thermoplastic elastomer and is had the TPE sleeve, and the shape of sleeve is decided according to customer requirement.
The external surface shape of replacing band is depended in short circuit about the rise angle (pick up angle) of load and generation greater than 90 ° the time.Applying superincumbent driving force may be for 25N or still less.Used terminating resistor can be 1.2k Ω, and power is 250mW to the maximum.Contact resistance can be less than 400 Ω.
Disclosed all features of present specification all will state in the claims as main points of the present invention, as long as they are creative separately or mutually combine creative with respect to prior art.
Claims (14)
1. be used to detect the especially pick-up unit that accounts for a rate of vehicle seat or automobile seat of seat, comprise at least one elongated photoconduction (14), described photoconduction (14) has at least one elongated core body (29) and at least one and described core body elongated sheath (28) separated by a distance, wherein, under Mechanical Driven instrument (19) effect, photoconduction (14) is made light be arranged in photoconduction (14) ejaculation of an opposite described side of described Mechanical Driven instrument (19) along at least one the direction distortion perpendicular to photoconduction (14) longitudinal axis owing to seat occupies the distortion that causes.
2. according to the described pick-up unit of arbitrary aforementioned claim, it is characterized in that described elongated photoconduction (14) to small part is arranged in the padded coaming otch (30) of photoconduction (14) in the seat cushions (9).
3. according to the described pick-up unit of arbitrary aforementioned claim, it is characterized in that, described elongated photoconduction (14) is provided with down the auxiliary of bracing or strutting arrangement at least in part, and described bracing or strutting arrangement is used for supporting the shaped as frame of described photoconduction (14) and/or is with the shape system particularly including having.
4. according to the described pick-up unit of arbitrary aforementioned claim, it is characterized in that described pick-up unit comprises the instrument (18) of the optical conductivity that is used to modulate described photoconduction (14).
5. according to the described pick-up unit of arbitrary aforementioned claim, it is characterized in that described pick-up unit comprises the instrument (19) of the described photoconduction of Mechanical Driven (14), particularly be used for making the instrument of described photoconduction (14) distortion.
6. pick-up unit according to claim 5 is characterized in that, described Mechanical Driven instrument (19) has the elevated regions (21) that faces described photoconduction (14).
7. pick-up unit according to claim 6, it is characterized in that, described chair portion (3) comprises seat cushions (9), wherein said seat cushions (9) further has padded coaming otch (23), and Mechanical Driven instrument (19) and/or the elevated regions (21) that is used for the warp tool of optical inspection tool (13) are arranged on described padded coaming otch (23).
8. according to the described pick-up unit of arbitrary claim among the claim 5-7, it is characterized in that preferably the panel beating hull shape of the fold of substrate (20) by fold and/or chair portion (3) becomes described Mechanical Driven instrument (19).
9. according to the described pick-up unit of arbitrary aforementioned claim, it is characterized in that at least one photoconduction (14) is arranged between the substrate (20) and chair portion surface (10) of chair portion (3).
10. according to the described pick-up unit of arbitrary aforementioned claim, it is characterized in that described pick-up unit comprises emission and/or receiving trap (15), wherein particularly described emitter has optical transmitting set and described receiving trap has photo-detector.
11. detection seat, especially the method that accounts for a rate of vehicle seat or automobile seat, wherein, can detect in the chair portion (3) that whether has personnel (11) to be sitting in described seat (1), it is characterized in that, because it is modulated in the zone at chair portion (3) place to pass the light of photoconduction (14), thereby can detect personnel's a rate that accounts for optically.
12. method according to claim 13 is characterized in that, described optically-coupled enters in the photoconduction (14) of chair portion (3), and wherein, when seat was occupied, the light that part is coupled into was coupled out from least one optical fiber of described deformable photoconduction (14).
13. method according to claim 14 is characterized in that, for some are optical coupling out, described photoconduction (14) is deformed, and is preferably to be bent or to tie a knot repeatedly.
14., it is characterized in that according to the described method of arbitrary claim among the claim 13-15, account for a rate in order to detect, be determined at inlet (16) and the light quantity of outlet (17) and/or the difference between the light quality of deformable photoconduction (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009015998.3 | 2009-04-02 | ||
| DE102009015998.3A DE102009015998B4 (en) | 2009-04-02 | 2009-04-02 | Seat, in particular vehicle seat or motor vehicle seat, and method for detecting an occupancy of such a seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101865663A true CN101865663A (en) | 2010-10-20 |
| CN101865663B CN101865663B (en) | 2014-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010163367.7A Expired - Fee Related CN101865663B (en) | 2009-04-02 | 2010-04-02 | Detection device and method for detecting occupancy of a seat |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101865663B (en) |
| DE (1) | DE102009015998B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11648902B2 (en) * | 2019-03-26 | 2023-05-16 | Brose Fahrzeugteile Se & Co. Kommanditgesellschaft, Bamberg | Method for monitoring the interior of a vehicle, monitoring arrangement and vehicle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010012853B4 (en) * | 2010-03-25 | 2013-12-12 | Grammer Aktiengesellschaft | Recognition device and method for detecting occupancy of a seat |
| CN102243324A (en) * | 2011-05-03 | 2011-11-16 | 苏州工业园区高登威科技有限公司 | Seat angle adjuster preinstallation monitoring system |
| DE202020002026U1 (en) | 2020-05-08 | 2021-08-10 | Scherdel Marienberg Gmbh | Seat occupancy sensor for detecting the occupancy of a seat |
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| WO1997024976A1 (en) * | 1996-01-12 | 1997-07-17 | Matsushita Electric Works, Ltd. | Apparatus for detecting living body signals |
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| DE19751677A1 (en) * | 1997-11-21 | 1999-05-27 | Johann Hipp | Weight sensor for seat, especially motor vehicle seat |
| DE19826287A1 (en) * | 1998-06-12 | 1999-12-16 | Volkswagen Ag | Method and device for detecting occupancy of a vehicle seat |
| DE102004024691A1 (en) * | 2004-05-19 | 2006-02-23 | Daimlerchrysler Ag | Weight sensing device for motor vehicle seat, has optical fiber integrated in flexible spaced interlaced yarn provided for seat ventilation, and transmission value determining unit for determining active transmission value of optical fiber |
| DE102004035816B4 (en) * | 2004-07-23 | 2008-07-03 | Siemens Ag | force sensor |
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2009
- 2009-04-02 DE DE102009015998.3A patent/DE102009015998B4/en active Active
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560016A (en) * | 1983-12-14 | 1985-12-24 | Anco Engineers, Incorporated | Method and apparatus for measuring the weight of a vehicle while the vehicle is in motion |
| WO1997024976A1 (en) * | 1996-01-12 | 1997-07-17 | Matsushita Electric Works, Ltd. | Apparatus for detecting living body signals |
| US6040532A (en) * | 1998-10-26 | 2000-03-21 | Trw Inc. | Vehicle occupant weight sensor |
| US6353394B1 (en) * | 1999-09-17 | 2002-03-05 | Aisin Seiki Kabushiki Kaisha | Seat occupancy sensor |
| US6920256B2 (en) * | 2003-06-09 | 2005-07-19 | Key Safety Systems, Inc. | Fiber optic occupant or object classification system |
| US20060005630A1 (en) * | 2004-06-25 | 2006-01-12 | Denso Corporation | Capacitance-type sensor and occupant detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11648902B2 (en) * | 2019-03-26 | 2023-05-16 | Brose Fahrzeugteile Se & Co. Kommanditgesellschaft, Bamberg | Method for monitoring the interior of a vehicle, monitoring arrangement and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009015998A1 (en) | 2010-10-14 |
| CN101865663B (en) | 2014-06-18 |
| DE102009015998B4 (en) | 2014-12-11 |
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