CN108593152A - A kind of design method of pressure sensitivity identification device and application - Google Patents
A kind of design method of pressure sensitivity identification device and application Download PDFInfo
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- CN108593152A CN108593152A CN201810401110.7A CN201810401110A CN108593152A CN 108593152 A CN108593152 A CN 108593152A CN 201810401110 A CN201810401110 A CN 201810401110A CN 108593152 A CN108593152 A CN 108593152A
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- pressure
- identification device
- coil
- pressure sensitivity
- sensitivity identification
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of design method of pressure sensitivity identification device and application, the method includes：Determine the deformation coefficient of conductive rubber；Set the pressure threshold of the pressure sensitivity identification critical point of pressure sensitivity identification device；The maximum permissible value of the step height of pressure sensitivity identification device is calculated according to deformation coefficient and pressure threshold；Determine the standby upper pressure limit value of pressure sensitivity identification device；The minimum allowable value of the step height of pressure sensitivity identification device is calculated according to deformation coefficient and standby upper pressure limit value；Determine the sensitivity design parameter of pressure sensitivity identification device；According to the minimum allowable value of sensitivity design parameter, the maximum permissible value of step height and step height, the optimal value of step height is determined.The design method of pressure sensitivity identification device provided in an embodiment of the present invention, by simply designing, you can obtain pressure detecting range and disclosure satisfy that using needs, and the pressure sensitivity identification device that Sensitivity is high.
Description
Technical field
The present invention relates to technical field of pressure detection more particularly to a kind of design methods of pressure sensitivity identification device.
Background technology
Pressure sensitivity identification device is widely used in intellectual product, such as smart pen, but existing pressure sensitivity identification device is general
It is the distance change by coil and bar magnet so that wave band changes to obtain pressure value, but the pressure of this pressure sensitivity identification device
Power detection range is relatively narrow, tends not to meet application demand, and sensitivity is poor, and also a kind of pressure sensitivity identification device is to use
Far more precise electronic control system realizes the detection to pressure, to improve sensitivity, but detection method and internal structure
Complexity is made, manufacturing cost is high.
Invention content
The object of the present invention is to provide a kind of design method of pressure sensitivity identification device and applications, by simply designing, i.e.,
Pressure detecting range can be obtained to disclosure satisfy that using the pressure sensitivity identification device needed and Sensitivity is high, and this pressure sensitivity identifies
The structure of device is simple.
To achieve the above object, it in a first aspect, the present invention provides a kind of design method of pressure sensitivity identification device, wraps
It includes：
Determine the deformation coefficient of conductive rubber；
Set the pressure threshold of the pressure sensitivity identification critical point of the pressure sensitivity identification device；
The maximum permissible value of the step height of the pressure sensitivity identification device is calculated according to the deformation coefficient and pressure threshold；
Determine the standby upper pressure limit value of the pressure sensitivity identification device；
The minimum of the step height of the pressure sensitivity identification device is calculated according to the deformation coefficient and standby upper pressure limit value
Permissible value；
Determine the sensitivity design parameter of the pressure sensitivity identification device；
Permitted according to the minimum of the sensitivity design parameter, the maximum permissible value of the step height and the step height
Perhaps it is worth, determines the optimal value of the step height.
Preferably, the pressure sensitivity identification device includes the conductive rubber and circuit board；The circuit board includes First Line
Circle, the second coil and reinforced structure, the reinforced structure are distributed in around the first coil and the second coil.
The step height is specially the difference in height of the reinforced structure and the first coil and the second coil.
It is further preferred that the deformation coefficient of the determining conductive rubber is specially：
According to the shape of the reinforced structure, size, the conductive rubber thickness and the conductive rubber material, really
The fixed deformation coefficient.
It is further preferred that it is described according to the sensitivity design parameter, the step height maximum permissible value and
The minimum allowable value of the step height, before the optimal value for determining the step height, the method further includes：
Determine the spacing between the shape of the first coil and the second coil and the first coil and the second coil.
Preferably, the standby upper pressure limit value of the determination pressure sensitivity identification device is specially：
Set the standby upper pressure limit value.
Preferably, the standby upper pressure limit value of the determination pressure sensitivity identification device is specially：
It is counted according to the standby upper pressure limit value to multiple pressure sensitivity identification devices, determines the standby upper pressure limit
Value.
In second aspect, an embodiment of the present invention provides a kind of pressure sensitivity that any design method using first aspect designs
Identification device.
In the third aspect, an embodiment of the present invention provides a kind of smart pen, the smart pen includes any institute of second aspect
State pressure sensitivity identification device.
The design method of pressure sensitivity identification device provided in an embodiment of the present invention, by simply designing, you can obtain pressure
Detection range disclosure satisfy that using needs, and the pressure sensitivity identification device that Sensitivity is high, and the knot of this pressure sensitivity identification device
Structure is simple.When the pressure sensitivity identification device that this method designs is applied in smart pen, writing pressure can either be detected,
The non-writing pressure generated when again will not be to accidentally encountering smart pen is detected.
Description of the drawings
Fig. 1 is the design method flow chart of pressure sensitivity identification device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of pressure sensitivity identification device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the circuit board of pressure sensitivity identification device provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of first coil provided in an embodiment of the present invention and the second coil.
Specific implementation mode
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Fig. 1 is the design method flow chart of pressure sensitivity identification device provided in an embodiment of the present invention.Shown in Fig. 1,
The design method of pressure sensitivity identification device provided in an embodiment of the present invention is illustrated.
The design method of pressure sensitivity identification device provided in an embodiment of the present invention includes the following steps：
Step 110, the deformation coefficient of conductive rubber is determined.
Conductive rubber is the component part of pressure sensitivity identification device, and pressure sensitivity identification device is a kind of dress for measuring pressure
It sets, Fig. 2 is the structural schematic diagram of pressure sensitivity identification device provided in an embodiment of the present invention, and Fig. 3 is pressure provided in an embodiment of the present invention
Feel the structural schematic diagram of the circuit board of identification device.In order to better understand the present invention, with reference to Fig. 2 and Fig. 3, first to pressure
Sense identification device is introduced.
Pressure sensitivity identification device includes circuit board 10 and conductive rubber 20.
The front of circuit board 10 has first coil 1, the second coil 2 and reinforced structure 3.
The embodiment of the present invention additionally provides a kind of structural schematic diagram of first coil and the second coil, as shown in figure 4, first
Coil 1 and the second coil 2 be it is separately positioned between the positive of circuit board 10, first coil 1 and the second coil 2 each other not
Contact.First coil 1 and the second coil 2 can be in detour to be distributed in screw-type interval as shown in Figure 4, can also be S-type
It is distributed every detouring, or be distributed in other modes.
There is first coil 1 first pin 11, the second coil to have second pin 21, pressure sensitivity identification device can be by the
One pin 11 and second pin 21 are connected with external data processing equipment.Wherein, external data processing equipment can obtain
Get the potential difference between the first pin 11 and second pin 21.
Reinforced structure 3 is arranged in the periphery of first coil 1 and the second coil 2, and the thickness of reinforced structure 3 is higher than first coil
1 and second coil 2 thickness.
Conductive rubber 20 is overlapped on the front of circuit board 10, is in contact with reinforced structure 3, specifically, conductive rubber
20 can paste in the upper surface of reinforced structure 3.
Because the thickness of reinforced structure 3 is more than first coil 1 and therefore the thickness of the second coil 2 is had a common boundary in reinforced structure
Conductive rubber 20 on 3 has minim gap, not phase when no outer force effect between first coil 1 and the second coil 2
Contact.
When by outer force effect, the deformation to 2 side of first coil 1 and the second coil occurs for conductive rubber, with first
Coil 1 and the second coil 2 are in contact.
The deformation degree of conductive rubber 20 can influence the resistance of conductive rubber 20, and when deformation degree is bigger, resistance is smaller.By
Can be conductive in conductive rubber 20, after conductive rubber 20 is contacted with first coil 1 and the second coil 2, first coil 1 can be connected
With the second coil 2.Due to the resistance and deformation degree of conductive rubber 20, i.e., the size of suffered external force is negatively correlated, therefore outside
When power size changes, the resistance of conductive rubber 20 can change, the first pin 11 of first coil and the second coil
Potential difference between second pin 21 can also change, it is possible to pass through the electricity between the first pin 11 and second pin 21
The size of the suffered external force of potential difference reflection.
When designing pressure sensitivity identification device, it is first determined the deformation coefficient of conductive rubber 20.Wherein, deformation coefficient is guidance
The correlation function of the ratio of the deformation degree (deformation quantity) of power and conductive rubber suffered by electric rubber.The deformation system of conductive rubber 20
When number is larger, then conductive rubber is when by small power, you can generates larger deformation.
The material of the deformation coefficient and conductive rubber 20 of conductive rubber 20, i.e. material form and thickness is related, conductive rubber
The thickness of glue is bigger, and the deformation coefficient of conductive rubber 20 is bigger.
Since conductive rubber 20 is overlapped on reinforced structure 3, the shape and size of reinforced structure 3 can also influence conduction
The deformation coefficient of rubber 20.The shape of reinforced structure 3 can be as shown in Figure 3, is distributed in first coil 1 and the second coil 2
Three sides can also be the shape of four frames, be distributed in the surrounding of first coil 1 and the second coil 2, naturally it is also possible to be other
Shape, and the size of reinforced structure 3, such as the internal diameter size of four frame shape reinforced structures are also adjustable, and are passed through
The shape of reinforced structure, the thickness of size and conductive rubber 20 are adjusted, the deformation coefficient of conductive rubber 20 can be adjusted.
After the determination of the shape of reinforced structure 3, the thickness of size and conductive rubber 20 and material, so that it may to determine conductive rubber
The deformation coefficient of glue 20 can be specifically to apply a determining power to the conductive rubber 20 being overlapped on reinforced structure 3, make to lead
Electric rubber 20 deforms upon, and the ratio of the power and deformation degree of deformation coefficient and application is proportionate.
Step 120, the pressure threshold of the pressure sensitivity identification critical point of setting pressure sensitivity identification device.
Pressure sensitivity identifies that the pressure threshold of critical point refers to that pressure sensitivity identification device allows for the pressure detected in the application
Value applies the progress concrete example explanation in smart pen with pressure sensitivity identification device below in order to better understand the present invention.
Smart pen is a kind of intelligent writing device for capableing of identification record written handwriting, by combining pressure sensitivity technology, taking pictures
Technology and coding pattern technology etc., to written handwriting to being identified while writing, by written handwriting input computer etc.
Equipment realizes the electronization record of written handwriting.Smart pen needs use pressure sensitivity identification device to be detected to writing pressure,
And then the thickness of written handwriting is restored according to the size of pressure.
In pressure sensitivity identification device is applied the example in smart pen, pressure threshold refers to the minimum value for writing pressure,
The writing pressure that smart pen is generated when writing is greater than or equal to pressure threshold, and pressure sensitivity identification device is required to detect pressure
Threshold value just can ensure that all writing pressure can be detected, and in this example, pressure threshold can be to a large amount of
After the numerical value of writing pressure is counted, set according to statistical result.
Workflow is as follows when pressure sensitivity identification device is applied in smart pen：Pen core, pressure sensitivity identification are equipped in smart pen
Device and data processing equipment, the wherein tail end of pen core are in contact with the conductive rubber 20 of pressure sensitivity identification device, data processing dress
It sets and is connected with the first pin 11 and second pin 21 of pressure sensitivity identification device.
When smart pen is not write also, the pen core of smart pen is simultaneously not sensed by pressure, and correspondingly, pen core can't be right
20 applied force of conductive rubber, and because conductive rubber 20 is overlapped on reinforced structure 3, and the thickness of reinforced structure 3 is big
In the thickness of first coil 1 and the second coil 2, so conductive rubber 20 and first coil 1 and the second coil 2 are phase separations at this time
, and between first coil 1 and the second coil 2 it is also phase separation, the electricity being equivalent between first coil 1 and the second coil 2
Resistance is infinitely great, and the potential difference between the first pin 11 and second pin 21 is that initial potential is poor at this time.And in smart pen into running hand
When writing, pen core is in contact with writing surface, can sense the pressure (writing pressure) that writing surface applies it, this pressure passes through pen core
It is transferred to conductive rubber 20, conductive rubber 20 is when being under pressure effect, it may occur that deformation, with first coil 1 and the second coil 2
It is in contact, first coil 1 and the second coil 2 is connected, to change the potential difference between the first pin 11 and second pin 21.
When the size of pressure changes, the deformation degree of conductive rubber 20 can change, and then the resistance of conductive rubber 20 can change
Become, the potential difference between the first pin 11 and second pin 21 can change with resistance.Draw with the first pin 11 and second
Potential difference between the first pin of master chip pair 11 being connected of foot 21 and second pin 21 carries out calculation processing, generation and potential
The corresponding pressure signal of difference.Wherein, pressure signal can show that the size of the pressure suffered by conductive rubber 20, write pressure
Size it is identical as the size of the pressure suffered by conductive rubber 20, i.e., pressure signal can show that write pressure size.
Step 130, the maximum permissible value of the step height of pressure sensitivity identification device is calculated according to deformation coefficient and pressure threshold.
Step height is to instruct the difference in height of reinforced structure 3 and first coil 1 and the second coil 2, i.e. thickness difference, be that is to say
When not by external force, conductive rubber 20 and the distance between first coil 1 and the second coil 2.
The maximum permissible value of step height and the ratio of pressure threshold and deformation coefficient are proportionate, and pressure threshold is corresponding
The deformation degree of conductive rubber 20 has to be larger than or is equal to step height, and conductive rubber 20 could be in the pressure of threshold value that is under pressure
When, it is in contact with first coil 1 and the second coil 2, first coil 1 and the second coil 2 is connected, detects the pressure for pressure threshold
Power.
Step 140, the standby upper pressure limit value of pressure sensitivity identification device is determined.
Standby upper pressure limit value refers to that pressure sensitivity identification device is not detected it, conductive rubber 20 when being in standby
The upper limit of pressure numerical value being subject to.
The pressure that conductive rubber 20 is subject to is possible to not be measuring pressure to be checked, such as pressure sensitivity identification device is being applied to intelligence
When can be in pen, the pen core of smart pen be in contact with conductive rubber 20, tilts in smart pen, inversion and whens accidentally being touched etc., pen core is all
Conductive rubber 20 may be given to apply pressure, the pressure generated in this case is non-writing pressure, in order to avoid these are non-writing
The interference of pressure, and reduce power consumption and extend the service life etc. of pressure sensitivity identification device, it is undesirable that pressure sensitivity identification device pair
Non-writing pressure is detected.Therefore a standby upper pressure limit value can be set, when pressure is less than standby upper pressure limit value,
Pressure sensitivity identification device can't be detected pressure, i.e., when pressure is less than standby upper pressure limit value, the shape of conductive rubber 20
Change degree is not sufficient to turn it on first coil 1 and the second coil 2.
Standby upper pressure limit value can specifically be set according to using needs, can also be to multiple pressure sensitivity identification devices
Standby upper pressure limit value counted, according to statistical result determine.
It is applied in the example in smart pen by pressure sensitivity identification device, standby upper pressure limit value can be according to smart pen
Pen core weight determine：The gravity that pen core is subject to, the i.e. pen when smart pen is squeezed are can determine according to the weight of pen core
Standby upper pressure limit value, is set as the gravity of pen core by the pressure that wick feed conductive rubber 20 applies, then when smart pen is squeezed, pressure
Sense identification device can't carry out pressure detecting.Certainly, in other examples, standby upper pressure limit value can also be as needed
It is set to an other numerical value.
Step 150, the minimum of the step height of pressure sensitivity identification device is calculated according to deformation coefficient and standby upper pressure limit value
Permissible value.
The minimum allowable value and the ratio of standby upper pressure limit value and deformation coefficient of step height are proportionate.Standby pressure
The deformation degree of the corresponding conductive rubber of upper limit value 20 is necessarily less than step height, and conductive rubber 20 could be by standby pressure
When the pressure of upper limit value, it cannot still be in contact with first coil 1 and the second coil 2, i.e., first coil 1 and the second line cannot be connected
Circle 2, will not be to being detected for the pressure of standby upper pressure limit value.
Step 160, the sensitivity design parameter of pressure sensitivity identification device is determined.
The pressure that the sensitivity design parameter of pressure sensitivity identification device is subject to when can be with pressure sensitivity identification device open detection pressure
The size of power characterizes, i.e., the Detection Point pressure value of pressure sensitivity identification device, the sensitivity design parameter of pressure sensitivity identification device are higher
When, the minimum value for the pressure that corresponding pressure sensitivity identification device is capable of detecting when is smaller.
Sensitivity design parameter can be according to using needing set, and sensitivity design parameter pressure threshold and should wait for
Value within the scope of the numerical intervals of machine upper pressure limit value.
Step 170, according to sensitivity design parameter, the minimum allowable of the maximum permissible value of step height and step height
Value, determines the optimal value of step height.
It, can be with after the maximum permissible value and minimum allowable value that step height is determined according to step 130 and step 150
According to the sensitivity design parameter of required pressure sensitivity identification device, the optimal value of step height is determined.Step height it is optimal
Value is fallen within the scope of the numerical intervals of minimum value and maximum value, higher in the sensitivity design parameter of the pressure sensitivity identification device of needs
When, the optimal value of step height tends to minimum value, and conductive rubber 20 is by a smaller power at this time, you can conducting first
Coil 1 and the second coil 2, i.e. pressure sensitivity identification device are able to detect that a smaller pressure.And it identifies and fills in the pressure sensitivity of needs
When the sensitivity design parameter set is relatively low, the optimal value of step height tends to maximum value, at this time conductive rubber 20 need by
The power larger to one is connected first coil 1 and the second coil 2, i.e., the minimum for the pressure that pressure sensitivity identification device is able to detect that
It is worth larger.
In selected embodiment, before determining the optimal value of step height, it is also necessary to determine first coil 1 and second
The shape of coil 2, for example, screw thread shape or S-shaped etc., and determine the spacing between first coil and the second coil.This is because
Spacing between the shape and first coil 1 and the second coil 2 of first coil 1 and the second coil 2 can also influence pressure sensitivity identification
The Detection Point pressure value of device.Such as shown in Figure 3, when first coil 1 and the second coil 2 are screw thread shape, in First Line
When circle 1 and the second spacing between coil 2 are smaller, i.e. first coil 1 and when the comparatively dense of the second coil 2 distribution, conductive rubber
20 can be contacted first coil 1 and the second coil 2 simultaneously by a smaller power, to which first coil 1 and the second line be connected
Circle 2 starts to detect pressure, i.e. the Detection Point pressure value of conductive rubber 20 is smaller.And between first coil 1 and the second coil 2
Spacing it is larger when, i.e., first coil 1 and the second coil 2 distribution relatively evacuate when, conductive rubber 20 is by a larger power
First coil 1 and the second coil 2 could be contacted simultaneously, to which first coil 1 and the second coil 2 be connected, start to detect pressure, i.e.,
The Detection Point pressure value of conductive rubber 20 is larger.
The design method of pressure sensitivity identification device provided in an embodiment of the present invention, by simply designing, you can obtain pressure
Detection range disclosure satisfy that using needs, and the pressure sensitivity identification device that Sensitivity is high, and the knot of this pressure sensitivity identification device
Structure is simple.When the pressure sensitivity identification device that this method designs is applied in smart pen, writing pressure can either be detected,
The non-writing pressure generated when again will not be to accidentally encountering smart pen is detected.
The embodiment of the present invention additionally provides a kind of pressure sensitivity identification device, and this pressure sensitivity identification device is by above-described embodiment
What any design method was designed to.
The pressure detecting range of pressure sensitivity identification device provided in an embodiment of the present invention disclosure satisfy that using needs, and detect spirit
Sensitivity is high.
The embodiment of the present invention additionally provides a kind of smart pen, which includes any of the above-described pressure sensitivity identification device.
Above-mentioned pressure sensitivity identification device is arranged in smart pen, and smart pen correspondence has pressure sensitivity identification dress in above-described embodiment
Set the advantageous effect having, can either detect writing pressure, but will not be to accidentally encountering smart pen when the non-writing pressure that generates
It is detected, further, the Sensitivity of the pressure sensitivity identification device of this smart pen is adjustable.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of design method of pressure sensitivity identification device, which is characterized in that the method includes：
Determine the deformation coefficient of conductive rubber；
Set the pressure threshold of the pressure sensitivity identification critical point of the pressure sensitivity identification device；
The maximum permissible value of the step height of the pressure sensitivity identification device is calculated according to the deformation coefficient and pressure threshold；
Determine the standby upper pressure limit value of the pressure sensitivity identification device；
The minimum allowable of the step height of the pressure sensitivity identification device is calculated according to the deformation coefficient and standby upper pressure limit value
Value；
Determine the sensitivity design parameter of the pressure sensitivity identification device；
According to the minimum allowable of the maximum permissible value and the step height of the sensitivity design parameter, the step height
Value, determines the optimal value of the step height.
2. the design method of pressure sensitivity identification device according to claim 1, which is characterized in that the pressure sensitivity identification device packet
Include the conductive rubber and circuit board；The circuit board includes first coil, the second coil and reinforced structure, the reinforced structure
It is distributed in around the first coil and the second coil.
The step height is specially the difference in height of the reinforced structure and the first coil and the second coil.
3. the design method of pressure sensitivity identification device according to claim 2, which is characterized in that the determining conductive rubber
Deformation coefficient is specially：
According to the shape of the reinforced structure, size, the conductive rubber thickness and the conductive rubber material, determine institute
State deformation coefficient.
4. the design method of pressure sensitivity identification device according to claim 2, which is characterized in that described according to described sensitive
Design parameter, the maximum permissible value of the step height and the minimum allowable value of the step height are spent, determines that the step is high
Before the optimal value of degree, the method further includes：
Determine the spacing between the shape of the first coil and the second coil and the first coil and the second coil.
5. the design method of pressure sensitivity identification device according to claim 1, which is characterized in that the determination pressure sensitivity is known
The standby upper pressure limit value of other device is specially：
Set the standby upper pressure limit value.
6. the design method of pressure sensitivity identification device according to claim 1, which is characterized in that the determination pressure sensitivity is known
The standby upper pressure limit value of other device is specially：
It is counted according to the standby upper pressure limit value to multiple pressure sensitivity identification devices, determines the standby upper pressure limit value.
7. a kind of pressure sensitivity of design method design using any pressure sensitivity identification devices of the claims 1-6 identifies dress
It sets.
8. a kind of smart pen, the smart pen includes pressure sensitivity identification device described in the claims 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401110.7A CN108593152A (en) | 2018-04-28 | 2018-04-28 | A kind of design method of pressure sensitivity identification device and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401110.7A CN108593152A (en) | 2018-04-28 | 2018-04-28 | A kind of design method of pressure sensitivity identification device and application |
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| Publication Number | Publication Date |
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| CN108593152A true CN108593152A (en) | 2018-09-28 |
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| CN201810401110.7A Withdrawn CN108593152A (en) | 2018-04-28 | 2018-04-28 | A kind of design method of pressure sensitivity identification device and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539858A (en) * | 2019-09-20 | 2021-03-23 | 北京万维智能技术有限公司 | Identification method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539858A (en) * | 2019-09-20 | 2021-03-23 | 北京万维智能技术有限公司 | Identification method |
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