CN106525330A - Calibration control method of pressure sensor - Google Patents
Calibration control method of pressure sensor Download PDFInfo
- Publication number
- CN106525330A CN106525330A CN201611040180.1A CN201611040180A CN106525330A CN 106525330 A CN106525330 A CN 106525330A CN 201611040180 A CN201611040180 A CN 201611040180A CN 106525330 A CN106525330 A CN 106525330A
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- Prior art keywords
- calibration
- pressure
- pressure sensor
- control method
- judge whether
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
Abstract
The invention discloses a calibration control method of a pressure sensor, and the method is applied to FORCETOUCH equipment. The method comprises that whether a calibration condition of the pressure sensor is satisfied is determined; and when it is determined the calibration condition is satisfied, pressure calibration is executed, and pressure calibration includes zero calibration of the pressure sensor. According to the method, when a device reaches an automatic calibration standard, the pressure is calibrated automatically, the pressure sensor in the device is prevented from working in a state that an initial value is not zero, and the method ensures the sensitivity of the pressure sensor.
Description
Technical field
The present invention relates to component calibration technical field, more particularly to a kind of pressure sensor calibration control method.
Background technology
Force Touch equipment is due to perceiving the dynamics of light pressure and weight, and recalls different corresponding functions, quilt
Extensively apply.
As long as the action related with external pressure of Force Touch equipment can be gone out corresponding by this kind of equipment debugging
Function is come, and applies in various products, such as the main HOME keys of mobile phone, the related field such as mobile phone side button and other buttons.
During use, the pressure transducer of Force Touch equipment and is transmitted come feedback signal by the dynamics being externally received,
The rezero operation point of an initial position is had in use, and under normal circumstances, under non-working condition, pressure is passed button
Sensor initial value is classified as zero.When under the influence of extraneous act of god factor, such as great shock falls, or pressure transducer is forever
Long under the influence of deformation etc., the initial zero data of pressure transducer can occur corresponding change, cause the sensitive of pressure transducer
Property reduce.
Therefore, how to ensure the susceptiveness of pressure transducer, be those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of pressure sensor calibration control method, to ensure the sensitive of pressure transducer
Property.
For achieving the above object, the present invention provides a kind of pressure sensor calibration control method, sets for FORCE TOUCH
It is standby, including：
Judge whether to meet pressure sensor calibration condition；
When judgement reaches meets the calibration condition, pressure calibration is performed；
Wherein, the pressure calibration is pressure transducer zero calibration.
Preferably, it is described to judge whether to meet calibration condition, including：Judge whether start；Upon power-up, it is judged to meet
The calibration condition.
Preferably, it is described to judge whether to meet calibration condition, including：Judge whether to reach periodic calibration；When reached,
It is judged to meet the calibration condition, wherein, the prover time calculates the time according to system host internal clocking.
Preferably, calibration cycle is 6 hours.
Preferably, when the periodic calibration time is reached, if the pressure transducer has lasting change pressure signal output,
Then stop into pressure calibration or be postponed until when the pressure transducer stops continuing change pressure signal output and carry out pressure school
It is accurate.
Preferably, it is described to judge whether to meet calibration condition, including：Judge whether occur surprisingly to fall machine, it is unexpected when occurring
When falling machine, it is judged to meet the calibration condition, wherein it is that the detection of acceleration transducer Automatic Program is vertical that the unexpected machine that falls occurs
The data of direction displacement, data are that negative value and speed increase.
Preferably, judge whether to meet calibration condition, including：In operational conditions, pressure transducer persistently exports identical
, stable signal exceed Preset Time, then be judged to meet the calibration condition.
Preferably, the Preset Time is 30 seconds.
Preferably, it is described judge whether to meet calibration condition before, also include：The calibration mode that identifying user is selected, it is described
Calibration mode includes automatic calibrating mode and manual calibration mode；
When user is chosen to be the automatic calibrating mode, judge whether the step of meeting calibration condition described in execution；
When user is chosen to be the manual calibration mode, judge whether manual calibration completes, when it is completed, show artificial
The specify information that calibration is completed.
Preferably, when the pressure calibration is performed, when the pressure signal that MCU reads is zero, terminate the pressure calibration.
In above-mentioned technical proposal, the pressure sensor calibration control method that the present invention is provided is set for FORCE TOUCH
It is standby, including：Judge whether to meet pressure sensor calibration condition；When judgement reaches meets calibration condition, pressure calibration is performed,
Wherein, pressure calibration is pressure transducer zero calibration.By foregoing description, in the pressure transducer school that the present invention is provided
In quasi- control method, when body reaches calibration standard automatically, automatic pressure calibration, it is to avoid the pressure transducer in body is first
Work under initial value non-zero status, therefore, the pressure sensor calibration method that the application is provided ensure that the sensitive of pressure transducer
Property.
Description of the drawings
A kind of flow chart of pressure sensor calibration control method that Fig. 1 is provided by the embodiment of the present invention；
The flow chart of another kind of pressure sensor calibration control method that Fig. 2 is provided by the embodiment of the present invention；
The flow chart of the Home key operational approach that Fig. 3 is provided by present invention enforcement；
The pressure transducer zero schematic diagram that Fig. 4 is provided by the embodiment of the present invention.
Specific embodiment
The core of the present invention is to provide a kind of pressure sensor calibration control method, to ensure the sensitive of pressure transducer
Property.
In order that those skilled in the art more fully understands technical scheme, below in conjunction with the accompanying drawings and embodiment party
The present invention is described in further detail for formula.
Fig. 1 to Fig. 4 is refer to, in a kind of specific embodiment, the pressure transducer that the specific embodiment of the invention is provided
Adjustment controlling means, for FORCE TOUCH equipment, including：
Judge whether to meet pressure sensor calibration condition.Specifically, the pressure sensor calibration condition includes：Judgement is
No start；Upon power-up, it is judged to meet calibration condition.When being not keyed up not calibrated, wherein, start refers to instrument by shutting down
When state enters open state, i.e. MCU (Microprogrammed Control Unit, microprogram control unit) monitoring device is opened
Switch state, when device power-up key is activated operation, acquiescence provides an order and performs calibration.
When judgement reaches meets calibration condition, pressure calibration is performed, wherein after the completion of pressure calibration, terminate automatically calibration
Program, wherein, pressure calibration is pressure transducer zero calibration, and specifically, equipment carries out pressure transducer in assembling of dispatching from the factory and returns
Zero calibration, the pressure signal value that MCU reads when without operation is zero.When calibration condition is met, if now MCU readings
Pressure signal is A (wherein A is the pressure value for reading), by self-calibration routines algorithm, unnecessary signal A is deducted A, is classified as
Zero, this algorithm persistently carries out to calibration next time starting.In order to avoid unnecessary operation, if when the pressure signal of MCU readings
When being not zero, just start pressure calibration, if as pressure signal zero that MCU reads, terminating pressure calibration.
By foregoing description, in the pressure sensor calibration control method provided by the specific embodiment of the invention,
When body reaches calibration standard automatically, automatic pressure calibration, it is to avoid the pressure transducer in body is in initial value non-zero status
Lower work, therefore, the pressure sensor calibration method that the application is provided ensure that the susceptiveness of pressure transducer.
Further, judge whether to meet calibration condition, including：Judge whether to reach periodic calibration；When reached, judge
To meet calibration condition, prover time calculates the time according to system host internal clocking, and the wherein calibration condition is in start shape
Carry out under state.Specifically, calibration cycle can be 30 minutes, 1 hour, 24 hours etc., in order to avoid excessively frequently or school
Paracycle is long, it is preferable that calibration cycle is 6 hours.Pressure transducer is calibrated once per 6 hours Automatic Program.Pass through
Setting cycle is calibrated to pressure transducer, further improves pressure transducer susceptiveness in use.
Further, when the periodic calibration time is reached, if pressure transducer has lasting change pressure signal output,
Stop into pressure calibration or be postponed until pressure transducer stop continue change pressure signal output when calibrated automatically, it is excellent
Choosing, when continuing change pressure signal more than or equal to 1s, is judged to that equipment is being operated manually, and certainly according to concrete instrument, judges
Continue change pressure signal time specifically to adjust.The pressure signal situation that program does not persistently change according to pressure transducer
Lower startup self calibration, if pressure transducer have persistently different size of pressure signal output prove may user operate this by
Key, does not carry out self calibration or postpones calibration, wherein postpone the calibration time limit can postpone to persistently different size of pressure signal
Stop carrying out pressure calibration immediately during output, it is also possible to be set to carry out pressure after lasting different pressures stop output Preset Time
Depending on calibration, wherein Preset Time are according to concrete instrument, the application is not especially limited.By calibration of delaying, it is to avoid pressure is passed
The situation of sensor alignment error, is effectively improved the accuracy of pressure sensor calibration.
Preferably, judge whether to meet calibration condition, including：Judge whether occur surprisingly to fall machine, machine is fallen when generation is unexpected
When, it is judged to meet calibration condition, wherein it is that acceleration transducer Automatic Program detects vertical direction displacement that the unexpected machine that falls occurs
Data, data are that negative value and speed increase, and not of uniform size due to each equipment, speed is also different, can contrast per second
Speed judged.When falling to falling and fall, speed persistently increases, and then speed is rapidly reduced to zero, can determine that for
Machine is fallen, its medium velocity is reduced to for zero time and may be set to -1.5 seconds 0.01 second, it is preferred that survey by acceleration transducer
The acceleration for obtaining instrument landing is equal with gravity acceleration g, is judged to occur surprisingly to fall machine.Wherein the calibration condition is in start
Carry out under state.Specifically, it is unexpected occur after calibrate automatically, it is unexpected to can behave as falling with intense vibration etc..Judge
Mode：In the case of horizontal positioned, x-axis, y-axis, the data of z-axis are equal to zero or close to zero to acceleration transducer, y-axis generation
Meter apparatus are in vertical direction displacement.Automatic Program detects the data of y-axis, and such as data are for negative value and pace of change is fast, can determine whether
To fall.It is to play gravity sensing game or when falling in differentiation, can be according to detecting the quantity of x-axis, y-axis, z-axis sentencing simultaneously
Fixed, such as x-axis, y-axis, z-axis have data generation and amplitude of variation is less, and this explanation user is game is played using mobile phone or carries out which
It operates.Because falling the data for only producing change in the y-axis direction.It is also possible to passing through built-in gyroscope can determine that handss
Whether machine is subject to high vibration, judges whether to meet calibration condition, including：Judge whether occur strenuous vibration, when gyroscope only
When having vertical direction signal intensity, it is judged to meet calibration condition.
It is more highly preferred to, judges whether to meet calibration condition, including：In operational conditions, pressure transducer is persistently exported
Identical, stable signal exceed Preset Time, then be judged to meet calibration condition.Wherein, Preset Time staff can be with
Voluntarily arrange, it is considered to equipment usage frequency, it is preferable that Preset Time is 30 seconds.In equipment non-standby, under normal operating state (such as
Screen is unlocked, the clicked operation of capacitance plate or other instructions are in the case of being constantly called), pressure transducer is persistently exported
More than 30s, now equipment, identical, stable signal can judge that calibration command is performed automatically, and sensor signal is zeroed
Operation.
Above-mentioned calibration condition can be present simultaneously with instrument, be calibrated by one of which is met, it is also possible to only
There are one of which or at least two calibration conditions while existing, the automatic calibration condition sequencing after start voluntarily can be limited
Fixed, the application is not specifically limited, in order to improve pressure transducer susceptiveness in use, it is preferable that above-mentioned multiple schools
Floating screed part is present in instrument.
On the basis of above-mentioned each scheme, before judging whether to meet calibration condition, also include：The calibration that identifying user is selected
Pattern, calibration mode include automatic calibrating mode and manual calibration mode.
When user is chosen to be automatic calibrating mode, execution judges whether the step of meeting calibration condition.
When user is chosen to be manual calibration mode, judge whether manual calibration completes, when it is completed, show manual calibration
The specify information for completing.During people's use, think that pressure transducer susceptiveness is relatively low, operator carry out artificial school
Standard, is effectively improved the pressure accuracy of pressure transducer.
Preferably, when manual calibration is carried out, show on display and calibrating, the signal language of Do Not Touch button is kept away
Exempt from the situation for alignment error occur.
Manual calibration can (when such as feel is unsatisfied) sets finger according to interior at any time, in any case by user
Order selects to calibrate, can be in the information of glimmering screen display " calibration is completed " after completing to calibrate, and calibration process also can plus be pointed out
" calibrating, Do Not Touch button " signal language is pointed out in language, such as calibration process, by increasing signal language, it is to avoid in calibration
During, artificially cause to calibrate inaccurate situation using pressure transducer.
As shown in figure 3, when for example pressure transducer is Home key, Home key abbreviated functional description：
Flicking Home key once, will light fluorescent screen, be easy to user to check the information such as phone, weather, time, note；
Flicking Home key is secondary, and fluorescent screen will be made to unlock and enter fluorescent screen main interface；
Light length presses Home key, will make fluorescent screen screen locking；
Home key is pressed again once, is exited APP programs and is returned fluorescent screen homepage.
Touch every time and press Home key, whether flicking or press again, all can shake with linear motor, and motor vibrations
Number of times is identical with compression number, allows users to experience optimal haptic effect.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (10)
1. a kind of pressure sensor calibration control method, it is characterised in that for FORCETOUCH equipment, including：
Judge whether to meet pressure sensor calibration condition；
When judgement reaches meets the calibration condition, pressure calibration is performed；
Wherein, the pressure calibration is pressure transducer zero calibration.
2. pressure sensor calibration control method according to claim 1, it is characterised in that described to judge whether to meet school
Floating screed part, including：Judge whether start；Upon power-up, it is judged to meet the calibration condition.
3. pressure sensor calibration control method according to claim 1, it is characterised in that described to judge whether to meet school
Floating screed part, including：Judge whether to reach periodic calibration；When reached, it is judged to meet the calibration condition, wherein, it is described
Prover time calculates the time according to system host internal clocking.
4. pressure sensor calibration control method according to claim 3, it is characterised in that calibration cycle is 6 hours.
5. pressure sensor calibration control method according to claim 3, it is characterised in that when periodic calibration is reached
Between when, if the pressure transducer has lasting change pressure signal output, stop into pressure calibration or be postponed until the pressure
Force transducer stops continuing to carry out pressure calibration during change pressure signal output.
6. pressure sensor calibration control method according to claim 1, it is characterised in that described to judge whether to meet school
Floating screed part, including：Judge whether occur surprisingly to fall machine, when occurring surprisingly to fall machine, be judged to meet the calibration condition, wherein
Occur surprisingly to fall the data that machine detects vertical direction displacement for acceleration transducer Automatic Program, data are that negative value and speed increase
Greatly.
7. pressure sensor calibration control method according to claim 1, it is characterised in that judge whether to meet corrector strip
Part, including：In operational conditions, pressure transducer persistently exports identical, stable signal more than Preset Time, then be judged to
Meet the calibration condition.
8. pressure sensor calibration control method according to claim 7, it is characterised in that the Preset Time is 30
Second.
9. the pressure sensor calibration control method according to any one of claim 1-8, it is characterised in that the judgement
Before whether meeting calibration condition, also include：The calibration mode that identifying user is selected, the calibration mode include automatic calibrating mode
With manual calibration mode；
When user is chosen to be the automatic calibrating mode, judge whether the step of meeting calibration condition described in execution；
When user is chosen to be the manual calibration mode, judge whether manual calibration completes, when it is completed, show manual calibration
The specify information for completing.
10. the pressure sensor calibration control method according to any one of claim 1-9, it is characterised in that work as execution
During the pressure calibration, when the pressure signal that MCU reads is zero, terminate the pressure calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040180.1A CN106525330A (en) | 2016-11-23 | 2016-11-23 | Calibration control method of pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040180.1A CN106525330A (en) | 2016-11-23 | 2016-11-23 | Calibration control method of pressure sensor |
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| Publication Number | Publication Date |
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| CN106525330A true CN106525330A (en) | 2017-03-22 |
Family
ID=58356754
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611040180.1A Pending CN106525330A (en) | 2016-11-23 | 2016-11-23 | Calibration control method of pressure sensor |
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| CN109752134A (en) * | 2018-04-04 | 2019-05-14 | 北京字节跳动网络技术有限公司 | A kind of detection method and device of gas pressure |
| CN110035139A (en) * | 2018-01-12 | 2019-07-19 | 夏普株式会社 | Electronic equipment, control device, recording medium and control method |
| CN110207800A (en) * | 2018-11-16 | 2019-09-06 | 华帝股份有限公司 | Pressure sensor, oven and intelligent control method for oven |
| CN112925433A (en) * | 2019-12-06 | 2021-06-08 | 北京小米移动软件有限公司 | Control method and device of touch screen and storage medium |
| CN114076657A (en) * | 2021-10-29 | 2022-02-22 | 歌尔科技有限公司 | Pressure self-adaptive calibration method, terminal equipment and readable storage medium |
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