CN209553289U - A kind of fusion sensing pad and more fusion induction steering wheels - Google Patents
A kind of fusion sensing pad and more fusion induction steering wheels Download PDFInfo
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- CN209553289U CN209553289U CN201920144769.9U CN201920144769U CN209553289U CN 209553289 U CN209553289 U CN 209553289U CN 201920144769 U CN201920144769 U CN 201920144769U CN 209553289 U CN209553289 U CN 209553289U
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- steering wheel
- induction
- pressure sensitive
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Abstract
The utility model discloses a kind of fusion sensing pad and more fusion induction steering wheels, adhesive-layer, capacitive sensing layer, the pressure sensitive layer, shield dielectric layer being cascading including integration, wherein, pressure sensitive layer is distributed multiple induction points, and each induction point has independent electrically connected port；Mutually insulated shields between capacitive sensing layer and pressure sensitive layer.The fusion sensing pad of the utility model is applied on autonomous driving vehicle steering wheel, on the one hand, do not influence the operation of driver, be capable of the form of the both hands contact control of effectively perceive driver, and the fine movement for holding steering wheel can be distinguished；On the other hand, the overall structure of steering wheel is not influenced, specious, the effective solution product demand that precisely perceives of the automated driving system to driving condition.
Description
Technical field
The utility model belongs to sensor technology and automobile technical field, and in particular to a kind of fusion sensing pad and more fusions
Incude steering wheel.
Background technique
During technical plan and actual application are realized, system needs to obtain driver's in real time automatic Pilot technology
Current state, and it is vital for automated driving system that wherein whether the hand of driver, which holds information on the steering wheel,.
The technology that sensing device of the current detection hand from steering wheel has been carried out commercialization mainly has capacitive sensing and steering
The torsional forces of column incudes, and is mainly used in the automobile type configuration of external middle and high end at present, such as BMW, benz, Volvo, Te Si
Drawing etc. is configured in the intelligent driving vehicle of supplementary security system.
Torque induction technology detects torque force using the torque sensor of the configured electric power-aid steering electric machine of vehicle
Size incudes moment variations when driver holds steering wheel, filters road excitation by the algorithm of optimization, body vibrations introduce
Non-effective signal perceived, existing on-vehicle parts are effectively utilized in this method, by increase algorithm realize hand from
The perception of steering wheel does not need to develop and design again in structure, is a kind of scheme of low cost.
Capacitance sensing technology mainly wraps up one between the corium of steering wheel or the external jacket and wheel rim of other materials
Layer capacitance sensing pad realizes that capacitive sensing pad is made of inductive layer, insulating layer, shielded layer, when hand contacts or leaves steering wheel,
The capacitance of inductive layer generates small variation, the excitation waveform that controller issues be transmitted to after inductive layer through detection frequency or
The variation of charge and discharge time is perceived, which, which realizes, needs to increase capacitive sensing module and communication inside steering wheel arrangement
Module, while increasing by one of technique in steering wheel production and processing.
As automatic Pilot technology is clipped to the fully automated technological evolvement for driving L5 rank from the L1 grade of auxiliary driving technology,
Detection reliability of the system opponent from steering wheel and accuracy requirement are higher and higher, including system needs to incude and distinguishes holding side
Steering wheel etc. is still held, therefore induction technology is proposed harsher to which region of disk, differentiation hand touching steering wheel
It is required that.
Capacitance sensing technology and torque induction technology are in actual application process, it may appear that probabilistic erroneous judgement problem.
Torque induction technology its road excitation under some complex road conditions can also generate a torque force when driver's hand is from steering wheel
Lead to system erroneous judgement to hold steering wheel.
The detection device of capacitive sensing, the sensitivity and validity of induction are affected by the environment of surrounding, such as warm and humid
Degree, electromagnetic interference of mobile unit etc., the probability for incuding erroneous judgement will increase, in addition capacitance sensing technology identification finger or
Palm touches steering wheel and when hand holds the different conditions of steering wheel, there are problems that erroneous judgement.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of fusion sensing pads and more fusions to incude steering wheel,
It solves autonomous driving vehicle steering wheel hand in the prior art to be easy to be asked by external environment influence generation erroneous judgement from sensing device
Topic.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of fusion sensing pad, including integration be cascading adhesive-layer, capacitive sensing layer, pressure sensitive layer,
Shield dielectric layer, wherein pressure sensitive layer is distributed multiple induction points, and each induction point has independent electrically connected port；Capacitor
Mutually insulated shields between inductive layer and pressure sensitive layer.
Shielded layer is set between capacitive sensing layer and pressure sensitive layer.
Capacitive sensing layer is made of metallic conduction cloth, and has signal lead-out wire, and outer contour is at shielded layer edge
Inside.
It is arranged in such a way that viscose glue presses between two neighboring layer.
The shield dielectric layer is made of foam or insulation film.
A kind of steering wheel of more induction fusions, induction is merged in setting between the leather layer and alloy wheel rim of traditional steering wheel
Pad, wherein the adhesive-layer for merging sensing pad is Nian Jie with leather layer, and shield dielectric layer is adjacent to the alloy wheel rim of inner ring.
Pressure sensitive point is evenly distributed on the position on the outside of steering wheel rim, and can cover driver and hold steering wheel
Contact point.
The electrically connected port of all induction points is connected by way of printed wiring, and the same position on the steering wheel
It draws, is connect with the ECU induction module built in steering wheel.
The lead-out wire of the electrically connected port of all induction points is located at the position at 3 o'clock of steering wheel.
The induction point includes equally distributed 8, wherein four are arranged in 12 o'clock of steering wheel, 3 o'clock, at 6 points
Clock, the position at 9 o'clock.
Compared with prior art, the utility model has the following beneficial effects:
1, fusion sensing pad provided by the utility model increases pressure sensitive layer on the basis of capacitive influence sensor,
In conjunction with capacitor and pressure sensitive, the reliability of induction is improved.
2, the fusion sensing pad of the utility model is arranged multiple induction points in pressure sensitive layer, realizes multi-point touch sense
Know and segment the function of perception.
3, the fusion sensing pad of the utility model can be used in multiple fields, and expansible application is strong.
4, the fusion sensing pad of the utility model is applied on autonomous driving vehicle steering wheel, on the one hand, do not influence to drive
The operation for the person of sailing, is capable of the form of the both hands contact control of effectively perceive driver, and can distinguish the essence for holding steering wheel
Fine-motion；On the other hand, the overall structure of steering wheel is not influenced, specious, effective solution automated driving system is to driving
Sail the product demand of state precisely perceived.
5, it is controlled by can effectively perceive the both hands contact of driver after control unit progress Signal optimum processing
Form can specifically distinguish the movement that steering wheel was touched, held on surface, while accurately perceive specific region, do after acquisition
For the record data and data of driving behavior, accuracy of the hand from the state judgement that steering wheel incudes is effectively promoted and asks
Topic, while solving the problems, such as reliability and jamproof, in the environment inside cars such as different temperature, humidity, different road surface operating conditions
Under can obtain more accurately result.
6, the sensing pad of integral type, is easily achieved in structure, and package is consistent with capacitive sensing pad mode when installing, and does not change
Become existing mounting means and structure, the problem of high-level intelligent driving system of effective solution is to steering wheel touch-control sensing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the utility model merges sensing pad.
Fig. 2 is the structural schematic diagram that the utility model merges induction steering wheel more.
Fig. 3 is the scheme of installation that the utility model merges that sensing pad is used for steering wheel.
Fig. 4 layouts for the inductor that the utility model merges sensing pad pressure sensitive layer and connection figure.
Wherein, the mark in figure are as follows: 101- adhesive-layer；102- capacitive sensing layer；103- shielded layer；104- pressure sensitive
Layer；105- shield dielectric layer；201~208- shell of compression induction point；301- induction controller；302- pressure inductor；303- connects
Connect device.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, with reference to the accompanying drawing to the knot of the utility model
Structure and the course of work are described in further detail.
The utility model includes two technical solutions, mainly on the basis of capacitance touching control, by package structure
Increase pressure sensitive layer, forms fusion sensing pad, so that the fusion of capacitive sensing and pressure sensitive, increases precisely perception degree,
And the fusion sensing pad is used in steering wheel, the fusion inducing function of steering wheel touch-control is realized, improves the reliability of induction,
Realize the function of multi-point touch perception and subdivision perception.Effective solution accurate perception of the automated driving system to driving condition
Product demand.
A kind of fusion sensing pad, including integration be cascading adhesive-layer, capacitive sensing layer, pressure sensitive layer,
Shield dielectric layer, wherein pressure sensitive layer is distributed multiple induction points, and each induction point has independent electrically connected port；Capacitor
Mutually insulated shields between inductive layer and pressure sensitive layer.
Specific embodiment one, as shown in Figure 1:
A kind of fusion sensing pad, adhesive-layer 101, the capacitive sensing layer 102, feeling of stress being cascading including integration
Answer layer 104, shield dielectric layer 105, wherein pressure sensitive layer 104 is distributed multiple pressure sensitive points, and each induction point has independence
Electrically connected port；Mutually insulated shields between capacitive sensing layer 102 and pressure sensitive layer 104, capacitive sensing in the embodiment
Shielded layer 103 is set between layer 102 and pressure sensitive layer 104.
Diaphragm pressure sensor is used to be fixed on the sponge liner bottom of insulation by glue as pressure sensitive layer, the film
Sensor can perceive the external pressure of 10g~10Kg, while very frivolous, can be used as intermediate course and be embedded in foam mat
On；
Pressure film sensing pad package is arranged between the shielded layer of capacitive sensing pad and the foaming layer of outer rim, pressure sensitive
Pad and capacitive sensing pad make integrated sensing pad in such a way that glue presses, convenient for package installation；
Pressure sensitive and capacitive sensing signal are connected to ECU control unit by way of concentrating lead-out wire, and ECU control is single
Member is acquired processing, and the first source of specific induction and induction region are distinguished after judging by signal fused, then passes through LIN bus
By state real-time report to central processing unit.
Pressure sensitive layer 104 and capacitive sensing layer are embedded in integral type sensing pad by way of gluing pressing.
The structure composition for merging sensing pad is as follows:
Adhesive-layer 101 uses the capacitive sensing layer 102 of equipment and inside outside two-sided glue connection；
Capacitive sensing layer 102 is made of metallic conduction cloth, internal range of the outer contour at 103 layers, and control is preferable
The signal lead of shield effectiveness, capacitive sensing layer 102 is drawn in the same region, passes through the frivolous conductive copper of gluing at 102 layers
Piece is connected to connecting terminal, and conductive copper sheet is drawn conductor wire by way of gluing or welding and passes through miniplug and external control
ECU connection processed；
Shielded layer 103, is made of sponge or insulation film；
Pressure sensitive layer 104 arranges induction point using the equipment of the fusion sensing pad as needed, more settable or more
Point, settable any position and arrangement, the contact point substantially detected needed for covering；
Shield dielectric layer 105, is made of foam or insulation film, and internal device structure is isolated；
It is arranged in such a way that viscose glue presses between two neighboring layer.
Specific embodiment two, as shown in Figure 2 and Figure 3:
A kind of steering wheel of more induction fusions, induction is merged in setting between the leather layer and alloy wheel rim of traditional steering wheel
Pad, wherein the adhesive-layer for merging sensing pad is Nian Jie with leather layer, and shield dielectric layer is adjacent to the alloy wheel rim of inner ring.
Induction point is evenly distributed on the position on the outside of steering wheel rim, and can cover the contact that driver holds steering wheel
Point.Induction point described in the embodiment includes equally distributed 8, i.e. induction point 201~208, wherein four sides of being arranged in
To the position at 12 o'clock of disk, 3 o'clock, 6 o'clock, 9 o'clock.
The electrically connected port of all induction points is connected by way of printed wiring, and the same position on the steering wheel
It draws, is connect with the ECU induction module built in steering wheel.The lead-out wire position of the electrically connected port of all induction points in the embodiment
In the position at 3 o'clock of steering wheel.Can be as needed, different positions is set.
8 pressure inductors are drawn IO line in the position at 3 o'clock by way of printed wiring, and 16 IO feet connect in total
It is connected to the ECU induction module for being built in steering wheel；
The capacitor and pressure sensitive pad (fusion sensing pad i.e. as described herein) for pressing integral type are combined in structure,
It has merged two kinds of induction modes and has been applied on the steering wheel of autonomous driving vehicle, Signal optimum processing is carried out by control unit
The form that the both hands contact control of driver can effectively be perceived afterwards, can specifically distinguish surface and touch, hold steering wheel
Movement, while specific region is accurately perceived, accuracy of the hand from the state judgement that steering wheel incudes is effectively promoted and asks
Topic, while solving the problems, such as reliability and jamproof, in the environment inside cars such as different temperature, humidity, different road surface operating conditions
Under can obtain more accurately result.
Sensing pad is merged, applies and is easily achieved in structure in vehicle steering wheel, when package is installed and capacitive sensing pad side
Formula is consistent, does not change existing mounting means and structure, the high-level intelligent driving system of effective solution is to steering wheel touch-control sense
The needs of problems answered.Mounting structure of the fusion sensing pad on steering wheel is as follows:
Adhesive-layer 101 uses the leather layer and internal capacitive sensing layer 102 outside double-sided adhesive connection steering wheel；
Capacitive sensing layer 102 is made of metallic conduction cloth, internal range of the outer contour at 103 layers, and control is preferable
Shield effectiveness, the signal lead of capacitive sensing layer 207 near zones shown in Fig. 3 are drawn and the three orientation of steering wheel,
It is connected in 102 layers of frivolous conductive copper sheet by gluing, conductive copper sheet is drawn conductor wire by way of gluing or welding and passed through
Miniplug is connected with steering wheel control ECU；
Shielded layer 103, is made of sponge or insulation film；
Pressure sensitive layer 104, pressure inductor have 8 points to be arranged in the position on the outside of steering wheel rim shown in Fig. 3, base
The contact point that driver holds steering wheel is covered in sheet；
Shield dielectric layer 105, by foam or insulation film form and steering wheel inside alloy wheel rim be isolated.
The inductor of the utility model fusion sensing pad pressure sensitive layer is layouted and connects as shown in Figure 4:
Setting induction control module 301 on steering wheel, and it is uniformly distributed pressure inductor 302, all pressure inductors
302 are connected by connector 303, and induction control module 301 has LIN communication port, are connect with peripheral control unit.
The fusion sensing pad of the utility model is also applied to other field, and the side of manipulation is driven including aircraft, steamer
To disk, household appliance man-machine interface control panel, game stearing wheel or control-rod of electronic game amusement equipment etc. can be applied
The fusion sensing pad.
The mounting structure and installation method of the sensing device of the utility model steering wheel are as follows:
The first step, the main body framework that alloy rims are steering wheel carry out full package covering in wheel rim outer layer by foaming；
Second step, the induction being successively made of adhesive-layer, capacitive sensing layer, shielded layer, pressure sensitive layer, shield dielectric layer
Pad, cuts out corresponding according to the perimeter and thickness (foam thickness including attachment) of every a different steering wheel rim
Shape；
Third step, by the shield dielectric layer (bottom belt mucilage glue surface) of the sensing pad cut along the foam surface packet of wheel rim
It wraps up in；
4th step, basis wrap the steering wheel outer dimension of fusion sensing pad, cut out the leather of corresponding outer dimension
Or ox-hide outer casing, it is wrapped in the extexine (i.e. adhesive-layer) of sensing pad, the exposed adhesive-layer of sensing pad is not wrapping up
It is preceding to be protected by plastic film；
5th step carries out linen thread sewing to outermost leather or ox-hide on the inside of wheel rim.
The working principle and the course of work of the steering wheel for vehicle of more fusions induction of the utility model are as follows:
When automobile starting powers on, ECU control module is initialized fusion induction steering wheel, to entire capacitive sensing layer
Reference capacitance value sampled, calibrated and returned to zero after, obtain a reference value, letter then is carried out to each induction point of pressure sensitive layer
Number sampling, calibrated and returned to zero, concurrently set the activation threshold value of inductive signal；After calibration, ECU control module is by the period
Property sending pumping signal sampling capacitance inductive layer capacitance variation, while the pressure of each point of sequential sampling pressure sensitive layer
Value variation, changing value and its threshold value initially set after sampling are compared judgement.
When driver's hand holds steering wheel, real-time perception to capacitance and pressure value have been more than simultaneously threshold by controller
Value, by this as effective touch-control steering wheel behavior, while the position by determining the pressure sensitive point, it can obtain and hold direction
The specific region of disk, stamps timestamp for the information and is stored in ECU.If only capacitance or only pressure value is more than threshold
Value, then be determined as invalid touch-control.Induction control ECU provide LIN communication interface, will be on the change information of steering wheel touch-control state
The central controller unit of automobile is passed to, central controller carries out acquisition and recording and the judgement of touch information.
The utility model mainly protects fusion sensing pad and the steering wheel arrangement with fusion sensing pad, wherein involved
And the control method or detection method arrived, it can be realized by the function that hardware itself has, or existing skill can be used
Some algorithms of art can be realized, and not have the innovation to specific algorithm, pertain only to position, composition of structure and each component etc..
In order to illustrate more clearly of the technical solution of the utility model, only citing is illustrated above, will be to embodiment
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Claims (10)
1. a kind of fusion sensing pad, it is characterised in that: adhesive-layer, the capacitive sensing layer, pressure being cascading including integration
Power inductive layer, shield dielectric layer, wherein pressure sensitive layer is distributed multiple induction points, and each induction point has independent electrical connection
Port；Mutually insulated shields between capacitive sensing layer and pressure sensitive layer.
2. fusion sensing pad according to claim 1, it is characterised in that: be arranged between capacitive sensing layer and pressure sensitive layer
Shielded layer.
3. fusion sensing pad according to claim 2, it is characterised in that: capacitive sensing layer is made of metallic conduction cloth, and
With signal lead-out wire, inside of the outer contour at shielded layer edge.
4. fusion sensing pad according to claim 1, it is characterised in that: the side pressed between two neighboring layer by viscose glue
Formula setting.
5. fusion sensing pad according to claim 1, it is characterised in that: the shield dielectric layer is by foam or insulation film
Composition.
6. a kind of more fusion induction steering wheels, it is characterised in that: be arranged between the leather layer and alloy wheel rim of traditional steering wheel
Fusion sensing pad described in any one of claims 1 to 5, wherein the adhesive-layer for merging sensing pad is Nian Jie with leather layer, shielding
Insulating layer is adjacent to the alloy wheel rim of inner ring.
7. more fusion induction steering wheels according to claim 6, it is characterised in that: pressure sensitive point is evenly distributed on direction
Position on the outside of plate wheel edge, and the contact point that driver holds steering wheel can be covered.
8. more fusion induction steering wheels according to claim 7, it is characterised in that: the electrically connected port of all induction points is equal
It is connected by way of printed wiring, and the same position is drawn on the steering wheel, is connected with the ECU induction module built in steering wheel
It connects.
9. more fusion induction steering wheels according to claim 8, it is characterised in that: the electrically connected port of all induction points
Lead-out wire is located at the position at 3 o'clock of steering wheel.
10. the more fusions according to claim 7,8 or 9 incude steering wheels, it is characterised in that: the pressure sensitive point includes
Equally distributed 8, wherein four are arranged in the position at 12 o'clock of steering wheel, 3 o'clock, 6 o'clock, 9 o'clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920144769.9U CN209553289U (en) | 2019-01-28 | 2019-01-28 | A kind of fusion sensing pad and more fusion induction steering wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920144769.9U CN209553289U (en) | 2019-01-28 | 2019-01-28 | A kind of fusion sensing pad and more fusion induction steering wheels |
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| Publication Number | Publication Date |
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| CN209553289U true CN209553289U (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920144769.9U Expired - Fee Related CN209553289U (en) | 2019-01-28 | 2019-01-28 | A kind of fusion sensing pad and more fusion induction steering wheels |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744283A (en) * | 2019-10-31 | 2021-05-04 | 现代自动车株式会社 | Hand-off detection cover for steering wheel and method for forming hand-off detection cover for steering wheel |
-
2019
- 2019-01-28 CN CN201920144769.9U patent/CN209553289U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744283A (en) * | 2019-10-31 | 2021-05-04 | 现代自动车株式会社 | Hand-off detection cover for steering wheel and method for forming hand-off detection cover for steering wheel |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20210128 |