CN103892805B - The compress control method of bio signal detection and system - Google Patents
The compress control method of bio signal detection and system Download PDFInfo
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- CN103892805B CN103892805B CN201410116932.2A CN201410116932A CN103892805B CN 103892805 B CN103892805 B CN 103892805B CN 201410116932 A CN201410116932 A CN 201410116932A CN 103892805 B CN103892805 B CN 103892805B
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Abstract
The present invention relates to bio signal detection field, disclose compress control method and the system of the detection of a kind of bio signal.In the present invention, by being arranged on sensor carrier by bio-signal detector, after sensor carrier contact measured target, measure the force value between bio-signal detector and measured target；And when the difference measuring force value and the preset pressure value obtained is more than predetermined threshold value, adjust and contact tightness degree between sensor carrier and measured target, during until the difference measuring force value and the preset pressure value obtained is less than or equal to predetermined threshold value, start bio-signal detector and carry out bio signal detection, so that carry out bio signal detection under identical pressure condition, so that detection obtains bio signal on the basis of third party's condition of standard, there is reproducibility and comparativity, provide scientific basis for test system or the system of evaluation.
Description
Technical field
The present invention relates to bio signal detection field, particularly to the compress control method of bio signal detection
And system.
Background technology
At present, biomedical sector extracts bio signal, such as, the colour of skin usually through bio signal survey meter,
Blood, pulse, blood pressure etc..But to the different measuring position on the same person accepting detection, even
Same measurement position, due to the difference of measuring condition, makes measurement result can there is larger difference, so that
Measure the bio signal obtained and do not possess repeatability, comparativity, it is impossible to for test system or the system of evaluation
Scientific basis is provided.
Such as, common colour of skin survey meter (RGB survey meter) in use, will by user
The region to be measured of the probe contacts person under inspection of RGB survey meter, starts RGB survey meter detection skin tone value.
In this course, when different users uses RGB survey meter, it is applied to the pressure of person under inspection not
With, even the pressure that same user is applied to person under inspection is also impossible to identical every time.Additionally, due to
Skin and under musculature be a kind of non-rigid, there is certain elasticity, and different persons under inspection
The elasticity of skin histology is the most otherwise varied, and the elasticity of the skin histology of same person under inspection's different parts can not yet
With, also result in the pressure that RGB survey meter contacts with person under inspection different, thus cause RGB to visit
Survey the colour of skin that detects of instrument to measure under the conditions of different pressures and obtain, it is clear that do not possess comparativity with can
Repeatability, causes cannot function as test system or the scientific basis of the system of evaluation.
Summary of the invention
It is an object of the invention to provide compress control method and the system of a kind of bio signal detection so that
Bio signal detection is carried out, so that detection obtains bio signal with standard under identical pressure condition
On the basis of third party's condition, there is reproducibility.
For solving above-mentioned technical problem, embodiments of the present invention provide the pressure of a kind of bio signal detection
Force control method, comprises the steps of
A. being arranged on sensor carrier by bio-signal detector, wherein, described bio signal detects
Instrument is for detecting the bio signal of measured target；
B., after described sensor carrier contacts described measured target, detect according to described bio signal
Force value between instrument and described measured target and preset pressure value, sensor carrier and institute described in fine tuning
State the contact tightness degree between measured target.
Embodiments of the present invention additionally provide the control pressurer system of a kind of bio signal detection, comprise:
Bio-signal detector, sensor carrier, pressure sensor, central processing unit；
Described bio-signal detector is arranged on described sensor carrier, for detecting the life of measured target
Thing signal；
Described sensor carrier is for measuring between described bio-signal detector and described measured target
Force value；
Described pressure sensor is connected with described sensor carrier and central processing unit respectively, by described sensing
The force value that device carrier measurement obtains, sends described central processing unit to；
Described central processing unit is after contacting described measured target at described sensor carrier, according to institute
State the force value between bio-signal detector and described measured target and preset pressure value, fine tuning institute
State and contact tightness degree between sensor carrier with described measured target.
Embodiment of the present invention in terms of existing technologies, by bio-signal detector is arranged on biography
On sensor carrier, after sensor carrier contact measured target, measure bio-signal detector with tested
Force value between target；And measuring the difference of force value and the preset pressure value obtained more than pre-determined threshold
During value, adjust and contact tightness degree, until measuring the pressure obtained between sensor carrier and measured target
When the difference of force value and preset pressure value is less than or equal to predetermined threshold value, starts bio-signal detector and enter
Row bio signal detects, so that carry out bio signal detection under identical pressure condition, so that
Detection obtains bio signal on the basis of third party's condition of standard, has reproducibility.
It addition, in described step B, comprise following sub-step:
Measure the force value between described bio-signal detector and described measured target；
Judge whether the force value that described measurement obtains is less than or equal to default with the difference of preset pressure value
Threshold value；
If the force value that described measurement obtains is more than predetermined threshold value with the difference of preset pressure value, then adjust
Tightness degree is contacted between described sensor carrier with described measured target, until what described measurement obtained
Force value is less than or equal to predetermined threshold value with the difference of preset pressure value；
If the force value that described measurement obtains is less than or equal to pre-determined threshold with the difference of preset pressure value
Value, then start described bio-signal detector and carry out bio signal detection.
Exposure level between sensor and measured target is the tightest, and pressure is the biggest；The most loose, pressure is the least；
It is adjusted to a suitable tightness, reaches preset pressure value；Enter under the conditions of this preset pressure value
Row bio signal detects, and makes detection obtain bio signal on the basis of third party's condition of standard, and having can
Repdocutbility and comparativity.
It addition, contact tightness degree between the described sensor carrier of described adjustment and described measured target
Step in, comprise following sub-step:
Compare force value and preset pressure value that described measurement obtains；
If the force value detected described in is more than preset pressure value, then reduce described sensor carrier and institute
State the contact tightness degree between measured target；
If the force value detected described in is less than preset pressure value, then increase described sensor carrier and institute
State the contact tightness degree between measured target.
Tightness degree is contacted between sensor carrier and measured target, it is achieved subtract by reducing or increasing
It is little or increase the purpose of pressure between sensor carrier and measured target, it is easy to accomplish.
It addition, contact tightness degree between the described sensor carrier of described adjustment and described measured target
Step in, also comprise following sub-step:
Calculate the difference between force value and the described preset pressure value that described measurement obtains；Wherein, described
The force value that measurement obtains is closer to described preset pressure value, and described difference is the least；
During described difference reduces, to connecing between described sensor carrier and described measured target
The adjustment touching tightness degree is the faintest.
It addition, after measuring the force value obtaining between bio-signal detector and measured target,
The force value that described measurement obtains is converted into digital pressure value；
Judge that whether the described digital pressure value difference with preset pressure value is less than or equal to predetermined threshold value.
The force value that described measurement obtains is being converted in digital pressure value step, is also measuring described
The force value that arrives is amplified, after filtering, reconvert becomes digital pressure value.The simulation pressure obtained due to measurement
Force value is a signal the faintest, after amplifying, filtering, becomes what analog-to-digital conversion can identify
Signal, is conducive to obtaining actual pressure value accurately.
It addition, before described sensor carrier contacts described measured target, the described sensor of rough adjustment
Position between carrier and described measured target, until described sensor carrier contacts described measured target.
Vertical range between sensor carrier and measured target farther out time, relatively quickly make sensor
Carrier, close to measured target, does not consider pressure factor, makes sensor carrier contact with measured target,
Testing efficiency can be improved.
It addition, adjust between described sensor carrier and described measured target during position rough,
Adjust the horizontal range between described sensor carrier and described measured target and vertical range.
By adjusting the position of measured target, make the same of the different measured target of sensor carrier alignment as far as possible
Region to be measured, the region to be measured that can make different measured target is more consistent, so that the bio signal gathered
Time environmental condition more consistent, testing result has more comparativity.
It addition, adjust between described sensor carrier and described measured target in the step of position rough,
Comprise following sub-step:
Described measured target determines a region to be measured；
Laser beam is beaten on described measured target；
Judge whether described laser beam is directed at described region to be measured；
If region to be measured described in described laser beam misalignment, then adjust the horizontal position of described measured target
Put, until described laser beam is directed at described region to be measured.
Owing to automatically determining region to be measured, the region to be measured that can make different measured target is more consistent, thus
Making the environmental condition during bio signal of collection more consistent, testing result has more comparativity.
It addition, adjust between described sensor carrier and described measured target during position rough,
Set the stroke of described sensor carrier, it is to avoid the pressure overshoot to sensor.
Accompanying drawing explanation
Fig. 1 is the flow process of the compress control method of the bio signal detection according to first embodiment of the invention
Figure；
Fig. 2 is the entirety of the control pressurer system of the bio signal detection according to second embodiment of the invention
Installation diagram；
Fig. 3 is the simulation of the control pressurer system of the bio signal detection according to second embodiment of the invention
Signal processing block diagram；
In figure, 1. bio-signal detector, 2. sensor carrier, 3. pressure sensor, 4. bow-shaped support,
5. handwheel, 6. displacement platform, 7. limit sensors, 8. slide unit.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this
Bright each embodiment is explained in detail.But, it will be understood by those skilled in the art that
In each embodiment of the present invention, propose many technology to make reader be more fully understood that the application thin
Joint.But, even if there is no these ins and outs and many variations based on following embodiment and amendment,
The application each claim technical scheme required for protection can also be realized.
First embodiment of the present invention relates to the compress control method of a kind of bio signal detection, specifically flows
Journey is as it is shown in figure 1, comprise the steps of
Step 101, is arranged on bio-signal detector on sensor carrier, and wherein, bio signal is examined
Survey instrument for detecting the bio signal of measured target.
After sensor carrier contact measured target, according between bio-signal detector and measured target
Force value and preset pressure value, contact tightness degree between fine tuning sensor carrier and measured target.
Specifically, step 102, measure the force value between bio-signal detector and measured target.
Step 103, it is judged that whether the difference measuring force value and the preset pressure value obtained is less than or equal to
Predetermined threshold value, as no, then performs step 104；In this way, then step 105 is performed.
Step 104, adjusts the tightness degree that contacts between sensor carrier and measured target, returns and perform
Step 102.
Specifically, compare and measure the force value that obtains and preset pressure value, if be detected that force value
More than preset pressure value, then reduce the tightness degree that contacts between sensor carrier and measured target, reduce
Pressure between sensor carrier and measured target；If be detected that force value less than preset pressure value,
Then increase the tightness degree that contacts between sensor carrier and measured target, increase sensor carrier and tested
Pressure between target.By reduce or increase between sensor carrier and measured target contact tight
Degree, it is achieved the purpose of the pressure being reduced or increased between sensor carrier and measured target, it is easy to accomplish.
Additionally, it is noted that contact tight journey adjusting between sensor carrier and measured target
In the step of degree, the difference between force value and preset pressure value that computation and measurement obtains；Wherein, measure
The force value obtained is closer to preset pressure value, and this difference is the least；During difference reduces, to biography
The adjustment contacting tightness degree between sensor carrier and measured target is the faintest.By this closer in advance
If force value, adjust the adjustable strategies that amplitude is the least, actual pressure value fast approaching preset pressure can be made
Value, and be not easy to produce concussion, raising is regulated the speed, thus improves the speed of bio signal detection.
Step 105, starts bio-signal detector and carries out bio signal detection.
In practical implementations, after step 102, it is also possible to force value measurement obtained is converted into number
Word force value；Thus, in step 103, it is judged that digital pressure value is the least with the difference of preset pressure value
In or equal to predetermined threshold value.Predetermined threshold value mentioned here can be the value that an order of magnitude is the least,
Such as 10-6 so that it is close that the pressure between sensor carrier and measured target is wireless with predetermined threshold value,
Thus determine more accurately at one and under force value, carry out bio signal detection.Moreover, it is contemplated that to this reality
Executing mode operating mode in the future, especially such industry and Medical Instruments, these working environments are filled with EMI and make an uproar
Sound, supply harmonic, loop current and esd pulse, and echo signal to be extracted is comparatively small,
When force value measurement obtained is converted into digital pressure value, it is also possible to force value measurement obtained is put
Greatly, filtering after, reconvert becomes digital pressure value, so that actual pressure value more connects with preset pressure value
Closely.
Step 102 to step 104 can be used between fine tuning sensor carrier and measured target contact tight
Close degree, before sensor carrier contact measured target, it is also possible to rough adjustment sensor carrier and quilt
Survey the position between target, until sensor carrier contacts measured target.It is to say, do not consider sensing
Pressure between device carrier and measured target, significantly adjusts distance, range estimation sensor carrier and tested mesh
Between mark during contact, startup step 102, to step 104, is used for accurately controlling sensor carrier with tested
Pressure between target.Vertical range between sensor carrier and measured target farther out time, ratio is comparatively fast
Make sensor carrier close to measured target fastly, do not consider pressure factor, make sensor carrier and tested mesh
Tag splice touches, and can improve testing efficiency.
Additionally, it is noted that adjust the mistake of position between sensor carrier and measured target rough
Cheng Zhong, adjusts the horizontal range between sensor carrier and measured target and vertical range, makes sensor carry
The region to be measured of body alignment measured target.Be placed on test platform by measured target is that a comparison is subjective
Process, region to be measured can be made to there is certain deviation, thus affect final signal testing result.Pass through
Adjust the position of measured target, make the region same to be measured of the different measured target of sensor carrier alignment as far as possible,
The region to be measured that can make different measured target is more consistent so that gather bio signal time environment bar
Part is more consistent, and testing result has more comparativity.
Such as, between rough adjustment sensor carrier and described measured target during position, can use
Laser positioning method, true region to be measured.Specifically, measured target determines a region to be measured；
Laser beam is beaten on measured target；Judge whether laser beam is directed at region to be measured；If laser beam is the most right
Accurate region to be measured, then adjust the horizontal level of measured target, until laser beam is directed at region to be measured.Due to
Automatically determining region to be measured, the region to be measured that can make different measured target is more consistent, so that gather
Environmental condition during bio signal is more consistent, and testing result has more comparativity.
In order to avoid the pressure overshoot to sensor, adjusting hanging down between sensor carrier and measured target
During straight distance, can be with the stroke of setting sensor carrier.Specifically, it is simply that set upper limit
And lower limit, when reaching setting regions border, control sensor carrier and no longer move up or down.
Compared with prior art, by bio-signal detector is arranged on sensor carrier, in sensing
After device carrier contact measured target, measure the force value between bio-signal detector and measured target；
And when the difference measuring force value and the preset pressure value obtained is more than predetermined threshold value, adjusts sensor and carry
Contact tightness degree between body with measured target, until measure the force value and preset pressure value that obtain it
When difference is less than or equal to predetermined threshold value, starts bio-signal detector and carry out bio signal detection, can
So that carrying out bio signal detection under identical pressure condition so that detection obtain bio signal with
On the basis of third party's condition of standard, there is reproducibility.
The step of above method divides, and is intended merely to describe clear, it is achieved time can merge into a step
Or some step is split, is decomposed into multiple step, as long as comprising identical logical relation, all
In the protection domain of this patent；To adding inessential amendment or introducing in algorithm or in flow process
Inessential design, but do not change the core design of its algorithm and flow process all at the protection domain of this patent
In.
Second embodiment of the invention relates to the control pressurer system of a kind of bio signal detection, such as Fig. 2 institute
Show, comprise: bio-signal detector 1, sensor carrier 2, pressure sensor 3, central processing unit are (not
Diagram)；Wherein, bio-signal detector is arranged on sensor carrier, for detecting measured target
Bio signal；Sensor carrier is for measuring the force value between bio-signal detector and measured target；
Pressure sensor is connected with sensor carrier and central processing unit respectively, sensor carrier measurement is obtained
Force value, sends central processing unit to；Central processing unit for sensor carrier contact measured target it
After, according to the force value between bio-signal detector and measured target and preset pressure value, fine tuning
Tightness degree is contacted between sensor carrier with measured target.
Central processing unit judge to measure the difference of the force value that obtains and preset pressure value whether less than or etc.
In predetermined threshold value, and when the difference measuring force value and the preset pressure value obtained is more than predetermined threshold value,
Adjust and contact tightness degree between sensor carrier and measured target；Measuring the force value obtained with pre-
If whether the difference of force value is less than or equal to predetermined threshold value, starts bio-signal detector and give birth to
Thing signal detection.
Specifically, central processing unit contacts tight journey between sensor carrier and measured target adjusting
During degree, compare and measure the force value and preset pressure value obtained, and big in the force value detected
When preset pressure value, reduce and contact tightness degree between sensor carrier and measured target, thus subtract
Pressure between little sensor carrier and measured target；When the force value detected is less than preset pressure value,
Increase and contact tightness degree between sensor carrier and measured target, thus increase sensor carrier and quilt
Survey the pressure between target.
Refer to Fig. 2, adjust hanging down between sensor carrier and measured target to realize central processing unit
Straight distance, the system of present embodiment also comprises bow-shaped support 4, slide unit moving up and down 8, stepping electricity
Machine (not shown)；Sensor carrier uses bow-shaped support to be connected with pressure sensor, and pressure sensor is solid
Being scheduled on slide unit, slide unit moves up and down under step motor control, and stepper motor is connected with central processing unit；
Central processing unit is when the force value detected is more than preset pressure value, and Driving Stepping Motor rotates, stepping
Driven by motor slide unit moves up, and reduces and contacts tightness degree between sensor carrier and measured target；
Central processing unit is when the force value detected is less than preset pressure value, and Driving Stepping Motor rotates, stepping
Driven by motor slide unit moves down, and increases and contacts tightness degree between sensor carrier and measured target.
Owing to central processing unit carries out Digital Signal Processing, therefore the system of present embodiment also comprises modulus
Converter, is converted into digital pressure value by the force value that pressure sensor measurement obtains；Central processing unit is sentenced
Whether disconnected digital pressure value is less than or equal to predetermined threshold value with the difference of preset pressure value.
In practical implementations, the pressure sensor of present embodiment can based on foil gage, by
Being attached on alloyed steel elastic body make in it, its basic circuit model is Hui Sidun bridge-type resistance, this biography
Sensor possesses multiple advantage, through more literature survey and project plan comparison, it is contemplated that this pressure sensor
The linearity is fine, and the sluggish ratio of output is little, and repeatability is fine, but output signal is the faintest, full scale
Exporting several micro-millivolt of rank, therefore, native system also comprises amplifier and wave filter, and pressure is passed by amplifier
The force value that sensor measurement obtains is amplified, and the force value that amplified device is amplified by wave filter is filtered, and
Output is to analog-digital converter.Transmitter can be used to realize, and its design substantially determines whole system
Performance and index.The main amplifier of transmitter can select that TI's is high-accuracy herein, high input impedance, high altogether
The instrument amplifier AD620 of mould rejection ratio is main amplifier, as it is shown on figure 3, faint signal is amplified,
Filtering, conversion etc., the output signal that sensor is initial the most at last is nursed one's health into and can be known by analog-digital converter
Other magnitude.
Additionally, it is noted that in practical implementations, it is also possible to arrange a handwheel 5, for
During the rough position adjusted between sensor carrier and measured target, adjust sensor carrier and quilt
Survey the vertical range between target.Specifically, handwheel is connected with slide unit, rotates handwheel and drives on slide unit
Lower movement.Furthermore it is also possible to one displacement platform 6 of design, for rough adjust sensor carrier with
During position between measured target, adjust the horizontal range between sensor carrier and measured target.
Or, it is also possible to a laser orientation instru-ment is set, is embedded in sensor carrier, for adjusting roughly biography
Between sensor carrier and measured target during position, use laser positioning, automatically determine region to be measured.Specifically
Ground is said, determines a region to be measured on measured target；Laser beam is beaten at measured target by laser orientation instru-ment
On；Judge whether laser beam is directed at region to be measured；And when laser beam misalignment region to be measured, adjust quilt
Survey the horizontal level of target, until laser beam is directed at region to be measured.Such as, before measured pressure value,
Ring attaching fluorescence labels in target to be measured, starts laser orientation instru-ment, it is judged that whether laser beam is directed at this label；
Without alignment, then adjust the horizontal level of target to be measured, until laser beam is directed at label.It is directed at it
After, close laser orientation system, start PID pressure and adjust.
In order to avoid the pressure overshoot to sensor, it is additionally provided with limit sensors 7, for adjusting rough
Between sensor carrier and measured target during position, the stroke of setting sensor carrier；Spacing biography
Sensor is arranged on slide unit, is connected with central processing unit.When slide unit moves up and down, limit sensors exists
When the upper limit or the lower position that slide unit arrives sensor carrier stroke being detected, limit sensors sends and stops
Signal is to central processing unit, when central processing unit receives stopping signal, by step motor control slide unit not
Move up or down again.As in figure 2 it is shown, a sensor suddenly can be used, controlling stepper motor
Drive in the process (such as, the stroke of slide unit can be 26.50mm) that slide unit moves up and down, with suddenly
The position of sensor determines limit point, uses contact-making switch to complete limit signal input, set upper limit and
Lower limit, when reaching setting regions border, switch Guan Bi inputs a switching signal to central processing unit, from
And stop.Additionally, due to the stroke of slide unit is 26.50mm, so needing to set spacing priority,
Avoid the pressure overshoot to sensor.Such as, can set priority the highest be bound bit switch,
Next is only stroke initial point at end.Additionally, limit signal is required to through light-coupled isolation, with exempt from customs examination centre
Reason device is brought noise into and is caused misoperation.
Except above-mentioned hardware, in order to make system preferably play a role, some software design patterns are essential
's.The pressure sensor of present embodiment can use precision resister strain gauge transducer (such as, S type
Cantilever beam), the pressure (or weight) collected is changed into faint analog signal, is then passed through instrument
Amplifier signal amplifies, filter, convert after enter central processing unit and carry out analog-to-digital conversion (AD) and process.
Because the signal after AD converts also does not has to demarcate with actual weight or pressure, but mirror
Fine in the linearity of this cantilever beam sensor, so demarcation below can realize matching by algorithm,
Can use 2, by stages fitting process, thus be converted into pressure (such as 1kg can convert as 100KPa,
Or 0.1MPa) and also can be shown on 2.8 cun of TFT LCD screens.When not applying any pressure
0 should be displayed as the when of power, but this sensor is likely to occur null offset, and have mechanical part
The weight of fixture, so needing to be processed by software, overcome null offset.
Additionally, the touch button of startup also can be provided with on touch-screen, starts when touching this button and measure, this
Time central processing unit control Xia No. mono-stepper motor and start, thus band movable slider moves along a straight line downwards, surveys
The cantilever beam sensor of pressure is just installed on the slide block of this screw mandrel slide unit, so slide block is transported downward vertically
During Dong, to object (object under test) will be touched during certain stroke, when touching this object
Produce pressure, now the liquid crystal pressure that just display is actual.Further, carry out pressure also by liquid crystal display to set
Put, upper limit of pressure can be set, be such as set as 500KPa, then contact product with object under test when slide block
Raw pressure reaches stop motion immediately during 500kpa, and upper pressure limit herein can arbitrarily set.But
2 limit switches are had to be in first priority, it may be assumed that to be installed on the infrared emission grooved of slide unit bottom
When the output of this sensor triggers signal, switch A, proves that slide unit has slided into following extreme lower position, this
Time need unconditional stopping, otherwise damaging motor, and there is no practical significance.In like manner, the top of slide unit
Ye You mono-road infrared emission sensor B, when test completes to start and returns, this slide block moves upward, fortune
The dynamic upper limit is exactly to stop immediately in this road infrared emission sensor moment of sending pulse, and correlation herein passes
Sensor can also change proximity switch into.
It is adjusted about needs softwares such as middle acceleration-deceleration and actual rigidity adaptations.Software section
Most crucial algorithm is the tracking that PID realizes that skin pressure is changed by motor at any time, thus from obtaining
More objectively force value, the slight oscillatory of the most any disturbance or skin itself all can cause reality
The change of force value, thus the pressure drawn fict force value.Basic ideas are motor carryings
Bio-signal detector (such as RGB detector) along with changing with contacting of skin and pressure, change
It is uneven, thus needs the rate of change to pressure to sample, carry out PID calculating, adjust the arteries and veins of motor
Rushing frequency, a basic relation is as pressure electromechanical linear during the gap of setting value reduces
Reduction input pulse, and have functional relation between reduction degree and the step angle of pulse, sum up
Saying and be exactly, motor can be along with the adjustment campaign speed of the pressure size intelligence produced after detector and skin contact
Rate, from setting value more close to motor movement speed the slowest, otherwise the fastest.Thus evade and having detected
These objective circumstances that in journey, actually skin is being wriggled always, can accurately determine a pressure
Test under value.
It is seen that, present embodiment is the system embodiment corresponding with the first embodiment, this enforcement
Mode can be worked in coordination enforcement with the first embodiment.The relevant technical details mentioned in first embodiment
The most effective, in order to reduce repetition, repeat no more here.Correspondingly, this enforcement
The relevant technical details mentioned in mode is also applicable in the first embodiment.
It will be understood by those skilled in the art that the respective embodiments described above are realize the present invention concrete
Embodiment, and in actual applications, can to it, various changes can be made in the form and details, and the most inclined
From the spirit and scope of the present invention.
Claims (16)
1. the compress control method of a bio signal detection, it is characterised in that comprise the steps of
A. being arranged on sensor carrier by bio-signal detector, wherein, described bio signal detects
Instrument is for detecting the bio signal of measured target；
B., after described sensor carrier contacts described measured target, detect according to described bio signal
Force value between instrument and described measured target and preset pressure value, sensor carrier and institute described in fine tuning
State the contact tightness degree between measured target；
Wherein, before described sensor carrier contacts described measured target, the described sensor of rough adjustment
Position between carrier and described measured target, until described sensor carrier contacts described measured target；
Further, adjust between described sensor carrier and described measured target in the step of position rough,
Comprise following sub-step:
Described measured target determines a region to be measured；
Laser beam is beaten on described measured target；
Judge whether described laser beam is directed at described region to be measured；
If region to be measured described in described laser beam misalignment, then adjust the horizontal level of described measured target,
Until described laser beam is directed at described region to be measured.
The compress control method of bio signal the most according to claim 1 detection, it is characterised in that
In described step B, comprise following sub-step:
Measure the force value between described bio-signal detector and described measured target；
Judge whether the force value that described measurement obtains is less than or equal to default with the difference of preset pressure value
Threshold value；
If the force value that described measurement obtains is more than predetermined threshold value with the difference of preset pressure value, then adjust
Tightness degree is contacted between described sensor carrier with described measured target, until what described measurement obtained
Force value is less than or equal to predetermined threshold value with the difference of preset pressure value；
If the force value that described measurement obtains is less than or equal to pre-determined threshold with the difference of preset pressure value
Value, then start described bio-signal detector and carry out bio signal detection.
The compress control method of bio signal the most according to claim 2 detection, it is characterised in that
In the step contacting tightness degree between the described sensor carrier of described adjustment and described measured target,
Comprise following sub-step:
Compare force value and preset pressure value that described measurement obtains；
If the force value detected described in is more than preset pressure value, then reduce described sensor carrier and institute
State the contact tightness degree between measured target；
If the force value detected described in is less than preset pressure value, then increase described sensor carrier and institute
State the contact tightness degree between measured target.
The compress control method of bio signal the most according to claim 2 detection, it is characterised in that
In the step contacting tightness degree between the described sensor carrier of described adjustment and described measured target,
Also comprise following sub-step:
Calculate the difference between force value and the described preset pressure value that described measurement obtains；Wherein, described
The force value that measurement obtains is closer to described preset pressure value, and described difference is the least；
During described difference reduces, to connecing between described sensor carrier and described measured target
The adjustment touching tightness degree is the faintest.
The compress control method of bio signal the most according to claim 1 detection, it is characterised in that
After measuring the force value obtaining between bio-signal detector and measured target, comprise the steps of
The force value that described measurement obtains is converted into digital pressure value；
Judge that whether the described digital pressure value difference with preset pressure value is less than or equal to predetermined threshold value.
The compress control method of bio signal the most according to claim 5 detection, it is characterised in that
Described, the force value that described measurement obtains is converted in digital pressure value step, described measurement is obtained
Force value amplify, filtering after, reconvert becomes digital pressure value.
The compress control method of bio signal the most according to claim 1 detection, it is characterised in that
Between the described sensor carrier of rough adjustment and described measured target during position, adjust described biography
Horizontal range between sensor carrier and described measured target and vertical range.
The compress control method of bio signal the most according to claim 1 detection, it is characterised in that
Between the described sensor carrier of rough adjustment and described measured target during position, set described biography
The stroke of sensor carrier.
9. the control pressurer system of a bio signal detection, it is characterised in that comprise: bio signal
Detector, sensor carrier, pressure sensor, central processing unit, laser orientation instru-ment；
Described bio-signal detector is arranged on described sensor carrier, for detecting the life of measured target
Thing signal；
Described sensor carrier is for measuring between described bio-signal detector and described measured target
Force value；
Described pressure sensor is connected with described sensor carrier and central processing unit respectively, by described sensing
The force value that device carrier measurement obtains, sends described central processing unit to；
Described central processing unit is after contacting described measured target at described sensor carrier, according to institute
State the force value between bio-signal detector and described measured target and preset pressure value, fine tuning institute
State and contact tightness degree between sensor carrier with described measured target；
Described laser orientation instru-ment, is embedded in described sensor carrier, adjusts described sensor for rough
Between carrier and described measured target during position, use laser positioning, determine region to be measured；Described laser
Position indicator determines a region to be measured on described measured target；Laser beam is beaten on described measured target；
Judge whether described laser beam is directed at described region to be measured；And in district to be measured described in described laser beam misalignment
During territory, adjust the horizontal level of described measured target, until described laser beam is directed at described region to be measured.
The control pressurer system of bio signal the most according to claim 9 detection, it is characterised in that
Described central processing unit judge the difference of force value that described measurement obtains and preset pressure value whether less than or
Person is equal to predetermined threshold value, and the force value obtained in described measurement is more than default with the difference of preset pressure value
During threshold value, adjust and contact tightness degree between described sensor carrier with described measured target；Institute
When whether stating the difference measuring force value and the preset pressure value obtained less than or equal to predetermined threshold value, open
Dynamic described bio-signal detector carries out bio signal detection.
The control pressurer system of 11. bio signal according to claim 10 detections, its feature exists
In, described central processing unit adjust between described sensor carrier and described measured target contact tight
During degree, compare force value and preset pressure value that described measurement obtains, and detect described
Force value more than preset pressure value time, reduce connecing between described sensor carrier and described measured target
Touch tightness degree；When the described force value detected is less than preset pressure value, increases described sensor and carry
Tightness degree is contacted between body with described measured target.
The control pressurer system of 12. bio signal according to claim 10 detections, its feature exists
In, also comprise bow-shaped support, slide unit moving up and down, stepper motor；
Described sensor carrier uses described bow-shaped support to be connected with described pressure sensor, and described pressure passes
Sensor is fixed on described slide unit, and described slide unit moves up and down under described step motor control, described step
Enter motor to be connected with described central processing unit；
Described central processing unit, when the described force value detected is more than preset pressure value, drives described step
Entering electric machine rotation, described stepper motor drives described slide unit to move up, reduce described sensor carrier with
Contact tightness degree between described measured target；
Described central processing unit, when the described force value detected is less than preset pressure value, drives described step
Entering electric machine rotation, described stepper motor drives described slide unit to move down, increase described sensor carrier with
Contact tightness degree between described measured target.
The control pressurer system of 13. bio signal according to claim 9 detections, it is characterised in that
Also comprise analog-digital converter, the force value that described pressure sensor measurement obtains is converted into digital pressure value；
Described central processing unit judge the difference of described digital pressure value and preset pressure value whether less than or
Equal to predetermined threshold value.
The control pressurer system of 14. bio signal according to claim 13 detections, its feature exists
In, also comprise amplifier and wave filter；
The force value that described pressure sensor measurement is obtained by described amplifier is amplified；
The force value amplified through described amplifier is filtered by described wave filter, and exports to described modulus
Converter.
The control pressurer system of 15. bio signal according to claim 12 detections, its feature exists
In, also comprise handwheel, for adjusting position between described sensor carrier and described measured target rough
During, adjust the vertical range between described sensor carrier and described measured target；
Described handwheel is connected with described slide unit, rotates described handwheel and drives described slide unit to move up and down；
The control pressurer system of described bio signal detection also comprises displacement platform, for adjusting roughly institute
State between sensor carrier and described measured target during position, adjust described sensor carrier and institute
State the horizontal range between measured target.
The control pressurer system of 16. bio signal according to claim 12 detections, its feature exists
In, also comprise limit sensors, for rough adjust described sensor carrier and described measured target it
Between during position, set the stroke of described sensor carrier；
Described limit sensors is arranged on described slide unit, is connected with described central processing unit；
When described slide unit moves up and down, described limit sensors is detecting that described slide unit arrives described biography
When the upper limit of sensor carrier stroke or lower position, during described limit sensors transmission stopping signal is the most described
Central processor, when described central processing unit receives described stopping signal, by described step motor control institute
State slide unit no longer to move up or down.
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| DE102019112019B4 (en) * | 2019-05-08 | 2021-01-14 | Danfoss Power Electronics A/S | Motor drive and method for monitoring operational measurement data of an electric motor with at least one operating point |
| CN111381614B (en) * | 2020-03-26 | 2023-09-12 | 杭州汇健科技有限公司 | In-situ pressure acquisition micro-control device and control method thereof |
| CN113925486A (en) * | 2020-07-14 | 2022-01-14 | 先阳科技有限公司 | Tissue component measurement method, tissue component measurement device, electronic apparatus, tissue component measurement system, and storage medium |
| CN118243486A (en) * | 2024-05-30 | 2024-06-25 | 上海展通实业有限公司 | Multifunctional mechanical experiment testing method |
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