CN116908923A - Steering wheel is from hand detection device - Google Patents
Steering wheel is from hand detection device Download PDFInfo
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- CN116908923A CN116908923A CN202310877660.7A CN202310877660A CN116908923A CN 116908923 A CN116908923 A CN 116908923A CN 202310877660 A CN202310877660 A CN 202310877660A CN 116908923 A CN116908923 A CN 116908923A
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims abstract description 10
- 230000003044 adaptive effect Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 39
- 239000002184 metal Substances 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 239000010985 leather Substances 0.000 description 3
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
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Abstract
The embodiment of the specification provides a steering wheel is from hand detection device, includes: the induction pad is coated outside a handle ring of the steering wheel and comprises an insulating layer, a conductive layer, a first electrode plate and a second electrode plate, wherein the conductive layer, the first electrode plate and the second electrode plate are arranged on the insulating layer, and a reserved space for placing the first electrode plate and the second electrode plate is arranged on the conductive layer; the processor is electrically connected with the conducting layer, the first electrode plate and the second electrode plate; the processor receives the capacitance signal change of the conductive layer and the potential difference change signal between the first electrode plate and the second electrode plate, processes the received capacitance signal to judge whether the steering wheel is touched, and processes the received potential difference change signal to judge whether the steering wheel is touched by hands. Whether the steering wheel is held by living things or not can be detected, so that a driver is prevented from being lapped on the steering wheel by using foreign objects, and the driving safety is ensured.
Description
Technical Field
The specification relates to the technical field of vehicle steering wheels, in particular to a steering wheel hand-off detection device.
Background
At present, in the existing vehicles, a plurality of vehicle types are provided with L2-level auxiliary driving functions, so that self-adaptive cruising and lane keeping can be realized under high-speed road conditions, and some vehicle owners can equate the vehicle types to automatic driving. However, because the steering wheel is required to be held in the use process, a heavy object or a metal conductor is placed on the steering wheel handle ring, and an error signal is generated when the steering wheel is separated from the hand detection structure instead of hands, so that the hand detection induction is broken, and the caused error identification operation can bring a certain potential safety hazard to driving.
Disclosure of Invention
In view of this, the embodiment of the present disclosure provides a steering wheel off-hand detection device, which can detect whether the steering wheel is held by living things or not, and avoid the driver from overlapping the steering wheel with foreign objects, so that the hand is away from the steering wheel, and the driving safety is ensured.
The embodiment of the specification provides the following technical scheme: a steering wheel off-hand detection device comprising:
the induction pad is coated outside the handle ring of the steering wheel and comprises an insulating layer, a conductive layer, a first electrode plate and a second electrode plate, wherein the conductive layer, the first electrode plate and the second electrode plate are arranged on the insulating layer, and a reserved space for placing the first electrode plate and the second electrode plate is arranged on the conductive layer;
the processor is electrically connected with the conducting layer, the first electrode plate and the second electrode plate;
the processor receives the capacitance signal change of the conductive layer and the potential difference change signal between the first electrode plate and the second electrode plate, processes the received capacitance signal to judge whether the steering wheel is touched, and processes the received potential difference change signal to judge whether the steering wheel is touched by hands.
Preferably, the processor performs intelligent self-adaptive weighting processing on the received capacitance signal change to obtain a weighted capacitance value Y, compares the capacitance value Y with a preset capacitance value Y1 change amount threshold, generates a first electronic signal that the steering wheel is touched if the capacitance value Y is greater than the capacitance value Y1, and generates a second electronic signal that the steering wheel is not touched if the capacitance value Y is less than the capacitance value Y1.
Preferably, when the first electronic signal is generated, the processor performs intelligent adaptive weighting processing on the received potential difference change signal to obtain a weighted potential difference value F, compares the potential difference value F with a predetermined potential difference value F1 variation threshold, generates a third electronic signal that the steering wheel is touched by the driver's hand if the potential difference value F is greater than the potential difference value F1, and generates a fourth electronic signal that the steering wheel is not touched by the driver's hand if the potential difference value F is less than the potential difference value F1.
Preferably, the first electrode sheet and the second electrode sheet are arranged in a symmetrical manner in a reserved space on the conductive layer.
Preferably, the first electrode sheet includes a plurality of first sub-electrode sheets, and the plurality of first sub-electrode sheets are separated from each other;
and/or the second electrode sheet comprises a plurality of second sub-electrode sheets, and the second sub-electrode sheets are separated from each other.
Preferably, the first sub-electrode plates and the adjacent second sub-electrode plates are symmetrically distributed, and when the hands of the driver are held on the steering wheel, a plurality of leads are formed between the first sub-electrode plates and the second sub-electrode plates through the hands of the driver.
Preferably, the number of leads is 1 to 20.
Preferably, the first electrode sheet and the second electrode sheet are arranged in a symmetrical manner, including: a rectilinear arrangement, a curvilinear arrangement, a serpentine arrangement, or a helical arrangement.
Preferably, at 3 and 9 points of the steering wheel, the first and second electrode pads are arranged in the direction of the outer side surface of the steering wheel;
and/or, at the 6-point and 12-point positions of the steering wheel, the first electrode sheet and the second electrode sheet are arranged in the lateral direction on the steering wheel.
Preferably, the device further comprises a whole vehicle control unit, wherein the whole vehicle control unit is electrically connected with the processor, and the whole vehicle control unit receives the judging information of the processor to determine whether to start the whole vehicle function corresponding to the steering wheel in the hands-off state.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:
through set up conducting layer, first electrode piece and second electrode piece on the handle of steering wheel, through the capacitive signal change of treater receipt conducting layer, thereby the treater is handled the capacitive signal and is judged whether the steering wheel is touched, thereby the potential difference change signal between first electrode piece and the second electrode piece is received through the treater, thereby the treater is handled the potential difference change signal of receipt and is judged whether the steering wheel is the hand touching, whether can realize detecting to hold on the steering wheel whether biological or non-biological, avoid the driver to utilize the external object overlap joint on the steering wheel, make the hand leave the steering wheel, guarantee the security of driving.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a partial cut-away view of a steering wheel out-of-hand detection device provided by the application;
FIG. 2 is a schematic view of one arrangement of a first electrode pad and a second electrode pad of the steering wheel separation hand detection device provided by the application;
FIG. 3 is a schematic view of one arrangement of a first electrode pad and a second electrode pad of the steering wheel separation hand detection device provided by the application;
FIG. 4 is a graph of intelligent adaptive weighting of change data of capacitance signals of a conductive layer of a steering wheel off-hand detection device;
FIG. 5 is a diagram of intelligent adaptive weighting of the potential difference change signal of the steering wheel off-hand detection device according to the present application;
fig. 6 is a flow chart of a detection process of the steering wheel off-hand detection device provided by the application.
In the figure, 1, a handle ring; 2. a conductive layer; 3. a first electrode sheet; 4. a second electrode sheet; 5. an insulating layer.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, apparatus may be implemented and/or methods practiced using any number and aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
At present, when the vehicle L2 level is driven in an auxiliary mode, the self-adaptive cruising and lane keeping can be realized only by virtue of the auxiliary driving function, the steering wheel can be held by the hands of a driver to realize the functions, the detection of the steering wheel at present can only detect whether the steering wheel is touched, so that whether the driver holds the steering wheel is judged, certain defects exist in the detection mode, when the L2 level is used for assisting the driving, a certain driver can put a heavy object or a metal conductor on the steering wheel handle ring, the steering wheel is wrongly judged from a hand monitoring structure, and certain potential safety hazards are brought to the driving by the fact that the driver holds the steering wheel by the hands.
The inventor has devised a steering wheel off-hand detection device through extensive and intensive experiments.
The application solves the technical problems that: the problem that whether a driver's hand holds a steering wheel can not be judged when L2-level auxiliary driving is used is solved.
More specifically, the solution adopted by the application comprises the following steps: the processor receives the capacitance signal change of the conductive layer, and processes the capacitance signal to judge whether the steering wheel is touched or not, and receives the potential difference change signal between the first electrode plate and the second electrode plate, and processes the received potential difference change signal to judge whether the steering wheel is touched by the hand, so that whether the steering wheel is held on the steering wheel is biological or non-biological can be detected.
The following describes the technical scheme provided by each embodiment of the present application with reference to the accompanying drawings.
As shown in fig. 1 to 6, a steering wheel out-of-hand detection device includes:
the induction pad is coated outside the handle ring 1 of the steering wheel, the induction pad can be coated outside the steering wheel foaming part, meanwhile, protective layers such as leather and the like can be coated outside the induction pad, the induction pad can be protected, and the aesthetic property is improved, the induction pad comprises an insulating layer 5, a conductive layer 2, a first electrode plate 3 and a second electrode plate 4, the conductive layer 2, the first electrode plate 3 and the second electrode plate 4 are arranged on the insulating layer 5, the insulating layer 5 is an insulating substrate of the first electrode plate 3, the second electrode plate 4 and the conductive layer 2, and a reserved space for placing the first electrode plate 3 and the second electrode plate 4 is arranged on the conductive layer 2;
the processor is electrically connected with the conductive layer 2, the first electrode plate 3 and the second electrode plate 4, and the processor is electrically connected with the conductive layer 2, the first electrode plate 3 and the second electrode plate 4 through connectors and wire harnesses;
the processor receives the capacitance signal change of the conductive layer 2 and the potential difference change signal between the first electrode plate 3 and the second electrode plate 4, processes the received capacitance signal to determine whether the steering wheel is touched, and processes the received potential difference change signal to determine whether the steering wheel is touched by a hand.
Through setting up conducting layer 2, first electrode piece 3 and second electrode piece 4 on insulating layer 5 for can not be electrically connected between conducting layer 2, first electrode piece 3 and the second electrode piece 4 under initial condition, receive the electric capacity signal change of conducting layer 2 through the treater, thereby the treater is handled the electric capacity signal and is judged the steering wheel and touched, when the treater judges that the steering wheel is touched, thereby the treater is handled the potential difference change signal between first electrode piece 3 and the second electrode piece 4 of receipt and is judged whether the steering wheel is the hand touching, thereby detect the driver and touch the steering wheel through hand or other objects.
The conductive layer 2 is disposed on the steering wheel grip 1, and the conductive layer 2 includes a plurality of sub-conductive regions, which are not electrically connected to each other, and whether the steering wheel is held or not can be recognized by a change in capacitance value of the plurality of sub-conductive regions.
It should be further noted that, the insulating layer 5, the conductive layer 2, the first electrode plate 3 and the second electrode plate 4 form an induction pad, a reserved space is formed on the conductive layer 2, the first electrode plate 3 and the second electrode plate 4 are accommodated in the reserved space, no electrical connection is provided between the first electrode plate 3 and the second electrode plate 4, and the first electrode plate 3 and the second electrode plate 4 are distributed in different areas on the steering wheel along the rotation direction of the steering wheel according to the gesture of the holding state of the driver, so that the first electrode plate 3 and the second electrode plate 4 can be always led to form a lead by the hand of the user as long as any hand of the driver is in the holding state on the steering wheel;
impedance exists among a plurality of points on the watch surface of the human body, potential difference is formed between the first electrode plate 3 and the second electrode plate 4, the processor acquires the potential difference value which changes between the first electrode plate 3 and the second electrode plate 4, carries out filtering amplification processing, carries out operation through a software algorithm, records more accurate potential difference change value data, and can distinguish potential difference change values caused by the fact that hands of the human body, objects such as heavy objects or metal conductors and the like simulating hands of a driver are placed on the steering wheel handle ring 1.
As shown in fig. 4, in some embodiments, the processor performs intelligent adaptive weighting on the received capacitance signal change to obtain a weighted capacitance value Y, compares the capacitance value Y with a predetermined capacitance value Y1 change threshold, generates a first electronic signal that the steering wheel is touched if the capacitance value Y is greater than the capacitance value Y1, generates a second electronic signal that the steering wheel is not touched if the capacitance value Y is less than the capacitance value Y1, performs intelligent adaptive weighting on the received capacitance signal change of the conductive layer 2 to obtain a weighted capacitance value Y, compares the capacitance value Y with a predetermined capacitance value Y1 change threshold, and when the capacitance value Y is greater than the capacitance value Y1, indicates that the steering wheel is in a touched state, generates the first electronic signal, and when the capacitance value Y is less than the capacitance value Y1, indicates that the steering wheel is in a non-touched state, generates the second electronic signal, and detects whether the steering wheel is touched through the detection process.
It should be noted that, the processor performs intelligent adaptive weighting processing on the change data characteristic of the current signal of the received conductive layer 2, obtains a weighted capacitance value Y (i, q) according to the parameter values of i, q, compares the weighted capacitance value Y (i, q) with the predetermined capacitance value Y1 change amount threshold, and obtains a change amount threshold 7pf at the predetermined capacitance value Y1 according to the parameter values of i, q and the change data characteristic of the capacitance signal.
As shown in fig. 5, in some embodiments, when the first electronic signal is generated (i.e., when the steering wheel is in a touched state), the processor performs intelligent adaptive weighting processing on the received potential difference change signal to obtain a weighted potential difference value F, compares the potential difference value F with a predetermined potential difference value F1 variation threshold, generates a third electronic signal that the steering wheel is touched by the driver's hand if the potential difference value F is greater than the potential difference value F1, generates a fourth electronic signal that the steering wheel is not touched by the driver's hand if the potential difference value F is less than the potential difference value F1, performs intelligent adaptive weighting processing on the potential difference signal variation data characteristics between the first electrode plate 3 and the second electrode plate 4 to obtain a potential difference value F, compares the potential difference value F with the predetermined potential difference value F1 variation threshold, represents the driver's hand touching the steering wheel when the potential difference value F is greater than the potential difference value F1, generates the third electronic signal, and represents the driver's hand touching the steering wheel by other objects when the potential difference value F is less than the potential difference value F1, and generates the fourth electronic signal.
It should be noted that, the processor performs intelligent self-adaptive weighting processing on the change data characteristics of the potential difference signals between the first electrode plate 3 and the second electrode plate 4, updates each parameter e and g by using a gradient algorithm, excludes most samples with small gradients, calculates the information gain by using the rest samples, reduces the data volume and ensures the accuracy balance algorithm to obtain a weighted potential difference value F (e and g), compares the weighted potential difference value F (e and g) with a predetermined potential difference value F1 change threshold, and obtains the predetermined potential difference value F1 change threshold to be 1.0mV according to the parameter values of i and q and the potential difference signal change data characteristics.
In summary, it should be further noted that the processor determines whether the function of touching the steering wheel by the driver or other objects is valid through the combination of the first electronic signal, the second electronic signal, the third electronic signal, and the fourth electronic signal: if the first electronic signal and the third electronic signal are received, the driver touches the steering wheel and reaches a preset current value variation threshold value, the steering wheel is judged to be in a holding state, if the first electronic signal and the fourth electronic signal are received, the weight or the metal conductor touches the steering wheel and reaches the preset current value variation threshold value, the steering wheel is judged to be in a hands-off state, the driver touches the steering wheel through other objects (such as the weight or the metal) and if the second electronic signal is received, the driver touches the steering wheel and does not reach the preset current value variation threshold value, and the steering wheel is judged to be in the hands-off state.
As shown in fig. 1 to 3, in some embodiments, the first electrode piece 3 and the second electrode piece 4 are symmetrically arranged in the reserved space on the conductive layer 2, and by symmetrically arranging the first electrode piece 3 and the second electrode piece 4 in the reserved space, the symmetrical arrangement mode can reduce errors in time sequence, and is more suitable for a circuit with low amplitude signals, and the first electrode piece 3 and the second electrode piece 4 are arranged in the reserved space of the conductive layer 2, so that only one layer of conductive layer 2 is coated on the steering wheel body, multiple layers are avoided, the cost is reduced, and the related circuit design is simplified.
Further, the arrangement of the first electrode sheet 3 and the second electrode sheet 4 in a symmetrical manner includes: the linear arrangement, the curved arrangement, the snake-shaped arrangement or the spiral arrangement can be selected according to actual needs to be arranged, and the arrangement mode can reduce the overlapping area in the longitudinal direction, further reduce noise caused by potential difference, and improve the accuracy of identifying the hands of a driver or other objects (such as objects simulating the hands of the driver, such as heavy objects or metal conductors) placed on the steering wheel handle ring 1.
As shown in fig. 1 to 3, in some embodiments, the first electrode sheet 3 includes a plurality of first sub-electrode sheets, the first sub-electrode sheets are separated from each other, the first sub-electrodes are designed in a mode of equal-length difference, and each first sub-electrode sheet is not electrically connected with each other;
the second electrode plate 4 comprises a plurality of second sub-electrode plates, the second sub-electrode plates are mutually separated, the second sub-electrodes are designed in an equal-length differential mode, and the second sub-electrode plates are not electrically connected with each other.
As shown in fig. 1-3, in some embodiments, the first sub-electrode sheet and the adjacent second sub-electrode sheet are symmetrically distributed, and there is no electrical connection between the first sub-electrode sheet and the adjacent second sub-electrode sheet, and when the driver's hand is held on the steering wheel, a plurality of leads are formed between the first sub-electrode sheet and the second sub-electrode sheet through the driver's hand, so as to generate a potential difference change signal between the first electrode sheet 3 and the second electrode sheet 4.
The first sub-electrode pads and the second sub-electrode pads are distributed in different areas on the steering wheel along the rotation direction of the steering wheel according to the posture of the driver in the holding state, and the first sub-electrodes and the second sub-electrodes are distributed in different areas on the steering wheel along the rotation direction of the steering wheel, so that the first electrodes and the second electrodes can be formed into leads by the hands of the user as long as any hand of the user is in the holding state on the steering wheel.
Further, the number of the leads is 1-20, the number of the leads can be set according to actual conditions, and if the application needs exist, the number of the leads can be more.
The different combinations of the first sub-electrode sheet and the second sub-electrode sheet can form more leads (or channels) than the number of the sub-electrode sheets, so that the interference suppression capability is improved, the poor contact of the electrodes can be detected by measuring the impedance between the electrodes and the human body, and an alarm indication is sent out when the electrode is in poor contact.
The first electrode pad 3 and the second electrode pad 4 are not affected by leather or imitation leather stitch positions, and can be arranged at stitch positions, in some embodiments, at 3 points and 9 points of the steering wheel, the first electrode pad 3 and the second electrode pad 4 are arranged in the direction of the outer side surface of the steering wheel; the first electrode plate 3 and the second electrode plate 4 are arranged in the positions of 6 points and 12 points of the steering wheel in the lateral direction on the steering wheel, the first electrode plate 3 and the second electrode plate 4 are arranged on the outer lateral surface of the steering wheel in the positions of 3 points and 9 points of the steering wheel, the first electrode plate 3 and the second electrode plate 4 are arranged on the upper lateral surface of the steering wheel in the positions of 6 points and 12 points of the steering wheel, the state that a driver holds the steering wheel is more consistent with the state that the driver holds the steering wheel under the conventional condition, and the first electrode plate 3 and the second electrode plate 4 are always in the range of the human heart when the hand of the driver moves along the steering wheel, so that the accurate detection on whether the hand of the driver holds the steering wheel is ensured.
In other embodiments, the first electrode sheet 3 and the second electrode sheet 4 may be disposed on the lower side of the steering wheel at the 6-point position of the steering wheel, and may be set according to actual situations.
In some embodiments, the device further comprises a whole vehicle control unit, the whole vehicle control unit is electrically connected with the processor, the whole vehicle control unit receives the judging information of the processor to determine whether to start the whole vehicle function corresponding to the steering wheel in the hands-off state, the whole vehicle control unit is electrically connected with the processor through the connector, the wire harness and the processor, receives the operation judging information of the steering wheel in the hands-off state sent by the processor, starts the whole vehicle function corresponding to the steering wheel in the hands-off state, standardizes the operation of a driver and improves driving safety.
The same and similar parts of the embodiments in this specification are all mutually referred to, and each embodiment focuses on the differences from the other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is relatively simple, and reference should be made to the description of some of the system embodiments.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. A steering wheel off-hand detection device, comprising:
the induction pad is coated outside the handle ring of the steering wheel and comprises an insulating layer, a conductive layer, a first electrode plate and a second electrode plate, wherein the conductive layer, the first electrode plate and the second electrode plate are arranged on the insulating layer, and a reserved space for placing the first electrode plate and the second electrode plate is arranged on the conductive layer;
the processor is electrically connected with the conducting layer, the first electrode plate and the second electrode plate;
the processor receives the capacitance signal change of the conductive layer and the potential difference change signal between the first electrode plate and the second electrode plate, processes the received capacitance signal to judge whether the steering wheel is touched, and processes the received potential difference change signal to judge whether the steering wheel is touched by hands.
2. The steering wheel out-of-hand detection device according to claim 1, wherein the processor performs intelligent adaptive weighting processing on the received capacitance signal change to obtain a weighted capacitance value Y, compares the capacitance value Y with a predetermined capacitance value Y1 change amount threshold, generates a first electronic signal that the steering wheel is touched if the capacitance value Y is greater than the capacitance value Y1, and generates a second electronic signal that the steering wheel is not touched if the capacitance value Y is less than the capacitance value Y1.
3. The steering wheel separation detecting device according to claim 2, wherein when the first electronic signal is generated, the processor performs intelligent adaptive weighting processing on the received potential difference change signal to obtain a weighted potential difference value F, compares the potential difference value F with a predetermined potential difference value F1 variation threshold, generates a third electronic signal that the steering wheel is touched by the driver's hand if the potential difference value F is greater than the potential difference value F1, and generates a fourth electronic signal that the steering wheel is not touched by the driver's hand if the potential difference value F is less than the potential difference value F1.
4. A steering wheel off-hand detection device according to any one of claims 1-3, wherein the first and second electrode pads are arranged in a symmetrical manner within a headspace on the conductive layer.
5. The steering wheel out-of-hand detection device of claim 4, wherein the first electrode sheet comprises a plurality of first sub-electrode sheets, the plurality of first sub-electrode sheets being spaced apart from one another;
and/or the second electrode sheet comprises a plurality of second sub-electrode sheets, and the second sub-electrode sheets are separated from each other.
6. The steering wheel off-hand detection device of claim 5, wherein the first sub-electrode pad and the adjacent second sub-electrode pad are symmetrically distributed, and a plurality of leads are formed between the first sub-electrode pad and the second sub-electrode pad by the hand of the driver when the hand of the driver is held on the steering wheel.
7. The steering wheel out-of-hand detection device of claim 6, wherein the number of leads is 1-20.
8. The steering wheel out-of-hand detection device of claim 4, wherein the first electrode pad and the second electrode pad are arranged in a symmetrical manner comprising: a rectilinear arrangement, a curvilinear arrangement, a serpentine arrangement, or a helical arrangement.
9. The steering wheel out-of-hand detection device according to claim 1, wherein the first electrode pad and the second electrode pad are arranged in the steering wheel outer side face direction at 3-point and 9-point positions of the steering wheel;
and/or, at the 6-point and 12-point positions of the steering wheel, the first electrode sheet and the second electrode sheet are arranged in the lateral direction on the steering wheel.
10. The steering wheel off-hand detection device of claim 1, further comprising a vehicle control unit, wherein the vehicle control unit is electrically connected with the processor, and the vehicle control unit receives the discrimination information of the processor to determine whether to start a vehicle function corresponding to the steering wheel in an off-hand state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310877660.7A CN116908923A (en) | 2023-07-17 | 2023-07-17 | Steering wheel is from hand detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310877660.7A CN116908923A (en) | 2023-07-17 | 2023-07-17 | Steering wheel is from hand detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116908923A true CN116908923A (en) | 2023-10-20 |
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ID=88350646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310877660.7A Pending CN116908923A (en) | 2023-07-17 | 2023-07-17 | Steering wheel is from hand detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116908923A (en) |
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2023
- 2023-07-17 CN CN202310877660.7A patent/CN116908923A/en active Pending
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