CN106247945A - A kind of position sensor and detection method thereof - Google Patents
A kind of position sensor and detection method thereof Download PDFInfo
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- CN106247945A CN106247945A CN201610854656.9A CN201610854656A CN106247945A CN 106247945 A CN106247945 A CN 106247945A CN 201610854656 A CN201610854656 A CN 201610854656A CN 106247945 A CN106247945 A CN 106247945A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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Abstract
The invention discloses a kind of position sensor and detection method thereof, described position sensor includes: the first one-dimensional position sensitive device, second one-dimensional position sensitive device, normal place processes circuit, position signalling scaling circuit, position signalling bias treatment circuit, wherein, first one-dimensional position sensitive device, second one-dimensional position sensitive device all processes circuit with normal place and is connected, normal place processes circuit and is connected with position signalling scaling circuit, position signalling scaling circuit is connected with position signalling bias treatment circuit, angle between one end and one end of the second one-dimensional position sensitive device of first one-dimensional position sensitive device is 90 degree, achieve position sensor and detection method is reasonable in design, real-time is preferable, output signal speed is fast, lower-cost technique effect.
Description
Technical field
The present invention relates to position detection field, in particular it relates to a kind of position sensor and detection method thereof.
Background technology
In position detecting system in some cases, generally use the imaging optical system including CCD camera, CCD
Include the dough-making powder battle array of linear array, by relevant position can be obtained after obtaining image information and carrying out further image procossing
Information.Such system forms and uses relative complex, and it is the most relatively slow that positional information obtains real-time, if multisystem is simultaneously
When using and require strict synchronization, there is also the synchronization acquisition problem of data.For some position inspections in the case of specific
Survey requirement, such as, use in the L-type line source system as instruction light source a kind of, need by being irradiated on detector
The position of the line source of L-type distribution measures, and detector therein is to install in orthogonal mode with two panels line array CCD
Constitute, although this two panels line array CCD is to work in the way of parallel drive, but there is also in such detector and ask as follows
Topic: owing to CCD drives with digital circuit, and CCD spatial sampling has discreteness, it obtains initial data and has work week
The restriction of phase, positional information need further data can obtain after processing, and real-time is relatively slow；And if used
, then there is costly problem, and detection area differ surely in large-area CCD camera or other large-area detector
Enough meeting requirement, real-time is the most poor.And for system employing more such detector and needing between each detector
Synchronize, if the high requirement of real-time of data acquisition, use such CCD system just cannot meet and require that.
In sum, present inventor, during realizing the present application technical scheme, finds above-mentioned technology extremely
There is following technical problem less:
In the prior art, there is the technical problem that real-time is poor, relatively costly in existing position detecting system.
Summary of the invention
The invention provides a kind of position sensor and detection method thereof, solve existing position detecting system and exist real
The technical problem that time property is poor, relatively costly, it is achieved that position sensor and detection method thereof are reasonable in design, real-time preferably,
Output signal speed technique effect fast, lower-cost.
For solving above-mentioned technical problem, on the one hand this application provides a kind of position sensor, described position sensor bag
Include:
First one-dimensional position sensitive device, the second one-dimensional position sensitive device, normal place process circuit, position signalling calibration electricity
Road, position signalling bias treatment circuit, wherein, the first one-dimensional position sensitive device, the second one-dimensional position sensitive device are all and normal bit
Putting process circuit to connect, normal place processes circuit and is connected with position signalling scaling circuit, position signalling scaling circuit and position
Signal bias treatment circuit connects, between one end and one end of the second one-dimensional position sensitive device of the first one-dimensional position sensitive device
Angle is 90 degree, and the output current signal of acquisition is transferred to normal place process circuit and carries out letter by 2 one-dimensional position sensitive devices
Number add, subtraction and the process of division arithmetic, and obtain position indicative signal, then this position indicative signal be transferred to
Position signalling scaling circuit carries out the correction process of calibration coefficient and refers to physical location size position the most one to one to obtain
Showing signal, the signal after being processed by position signalling scaling circuit the most again is transferred to position signalling bias treatment circuit and carries out position
The bias treatment of the initial initial point of signal is to obtain the position signalling that zero has been reset and last from outfan outgoing position
Signal is for display or further data process.
Wherein, the L-type position sensor that the application provides include be mutually perpendicular in the longitudinal direction to be arranged on same
Two one-dimensional position sensitive devices (abbreviation one-dimensional PSD) in plane and signal processing circuit, the one-dimensional PSD on each direction
Positional information in the direction, the two-dimensional coordinate in therefore two orthogonal one-dimensional PSDs can provide plane can be provided
Information, and in order to obtain the data of absolute position in signal processing circuit, it is provided with the location bias circuit that can return to zero simultaneously
And the adjustment circuit of display calibration coefficient, meet the requirement that video data is consistent with physical location.
Wherein, described position sensor also includes circuit board and shell, the first one-dimensional position sensitive device, the second one-dimensional position
Sensor, normal place process circuit, position signalling scaling circuit, position signalling bias treatment circuit are each attached to circuit board
On, circuit board is fixing in the enclosure.
Wherein, it is circuit of the prior art that described normal place processes circuit, and normal place processes circuit and specifically includes:
Add circuit, subtraction circuit and division circuit.First the current signal exported by first and second one-dimensional position sensitive device is divided
Do not carry out addition and subtraction, and be simultaneously converted into voltage signal, use high-precision operational amplifier A D704 can realize height
The signed magnitude arithmetic(al) of precision；Then the signal obtained divided by add circuit by the signal that subtraction circuit obtains, can obtain position
Instructed voltage signal, division circuit can use monolithic integrated optical circuit such as AD734 to realize.
Wherein, described position signalling scaling circuit includes: the first operational amplifier, the first resistance, position display scale are adjusted
Economize on electricity resistance, wherein, the outfan that the in-phase input end of the first operational amplifier processes circuit with normal place is connected, the first computing
Inverting input and one end of the first resistance, the earth resistance of amplifier are all connected with, the outfan of the first operational amplifier and
The other end of one resistance, position display scale regulation resistance the first end is all connected with, the adjustable side of position display scale regulation resistance
It is connected with the input of position signalling bias treatment circuit, position display scale regulation resistance the second end ground connection, the first resistance
Resistance is adjustable.
Wherein, described position signalling bias treatment circuit specifically includes: location bias arranges regulation resistance, the second computing is put
Big device, position output signal end, wherein, the in-phase input end of the second operational amplifier regulates the tune of resistance with position display scale
Joint end, location bias arrange the adjustable side of regulation resistance and are all connected with, the inverting input of the second operational amplifier and earth resistance
Connect, the outfan of the second operational amplifier is connected with position output signal end, location bias arrange regulate resistance the first end with
Second end is connected with the both positive and negative polarity of power supply respectively.
On the other hand, present invention also provides a kind of location detection methods, described method includes:
Step 1: utilize orthogonal 2 one-dimensional position sensitive devices acquisition and position to have the current signal of corresponding relation；
Step 2: utilize normal place to process circuit and the position corresponding current signal obtained is carried out addition, subtraction and division
Process and be simultaneously converted into the voltage signal that position is corresponding；
Step 3: the signal after utilizing position signalling scaling circuit to process step 2 carries out the process of calibration coefficient, it is thus achieved that
Position voltage signal of the same size with physical location；
Step 4: the signal after utilizing position signalling bias treatment circuit to process step 3 carries out the initial initial point of position signalling
Bias treatment to obtain the position signalling that has been reset of zero, and finally from outfan outgoing position signal for display or
Further data process.
Further, described normal place process circuit specifically includes:: add circuit, subtraction circuit and division circuit.First
First the current signal exported by first and second one-dimensional position sensitive device is carried out addition and subtraction respectively, and change simultaneously
For voltage signal, use high-precision operational amplifier A D704 can realize high-precision signed magnitude arithmetic(al)；Then by subtraction circuit
The signal that the signal obtained obtains divided by add circuit, can obtain position instructed voltage signal, and division circuit can use list
Sheet integrated circuit such as AD734 realizes.
Further, described position signalling scaling circuit includes: the first operational amplifier, the first resistance, position display are carved
Degree regulation resistance, wherein, the outfan that the in-phase input end of the first operational amplifier processes circuit with normal place is connected, and first
Inverting input and one end of the first resistance, the earth resistance of operational amplifier are all connected with, the outfan of the first operational amplifier
It is all connected with the other end, position display scale regulation resistance first end of the first resistance, the tune of position display scale regulation resistance
Joint end is connected with the input of position signalling bias treatment circuit, position display scale regulation resistance the second end ground connection, the first electricity
The resistance of resistance is adjustable.
Further, described position signalling bias treatment circuit specifically includes: location bias arranges regulation resistance, the second fortune
Calculating amplifier, position output signal end, wherein, the in-phase input end of the second operational amplifier regulates resistance with position display scale
Adjustable side, location bias arrange regulation resistance adjustable side be all connected with, the inverting input of the second operational amplifier and ground connection
Resistance connects, and the outfan of the second operational amplifier is connected with position output signal end, and location bias arranges regulation resistance first
End and the second end are connected with the both positive and negative polarity of power supply respectively.
The application solve its technical problem be the technical scheme is that by one-dimensional position sensitive device single for two panels by
Installation is carried out with mutually orthogonal direction fixing so that two one-dimensional directions present L-type distribution of shapes according to length direction.At letter
Number process circuit aspect, on the basis of using position signalling process circuit to obtain the position output signal of telecommunication in real time, is further added by
One independent location bias regulation process circuit and independent calibration coefficient adjust circuit, complete one-dimensional position sensitive device
The position signalling of output is that to be converted into relative to the deviation of intermediate position be the function relative to its one end deviation, consequently facilitating
Determining the actual position relatively of instruction light source, this function can also make its position output information be to appoint relative in effective range
The deviation of what position；And calibrate arranging of coefficient adjusting circuit and mainly solve position output process signal when display with actual
The consistency problem of relation.The process circuit that the two is independently arranged is easy to individually performing and making video data of regulatory function
Meaning is straightforward.
Technical scheme in the application utilizes the position sensing driving a dimensional device simple, easy to use to constitute two dimension
Function, utilizes computing circuit to simplify the complex circuit degree of signal processing, and the analog voltage signal that outgoing position is corresponding,
Can directly obtain positional information and show in real time, for using position sensitive detector to compare other location detection system, greatly
Amplitude improves the real-time of detector position information output.When multiple detectors use simultaneously, it is not necessary to the driving being associated,
I.e. can obtain positional information simultaneously.
One or more technical schemes that the application provides, at least have the following technical effect that or advantage:
The invention has the beneficial effects as follows, utilize one to be combined into cross modal conduct by yi word pattern laser designation linear light source
Instruction light source, and uses position sensor, by employing process circuit the output signal of detector therein is processed and
Obtaining linear light source accurate location on the detector, this mode avoids answering required for using line array CCD or area array CCD
Miscellaneous signal driver circuit and the output signal treatment technology of high request, have the spy of fast, the high real-time of output signal speed
Point；And based on the fireballing feature of hardware effort, improve the real-time of detector output signal；The device used is without multiple
Miscellaneous Digital Circuit Signal drives, and the process of its output signal have employed relatively simple operation amplifier circuit, outgoing position
The meaning of signal is the most direct, it is not necessary to further data process and conversion, simplify signal processing step；Detector is the most defeated
Out position signal, real-time, when multi-detector uses, there is not synchronously driven problem simultaneously, reduce single and multiple
Detector uses difficulty, so, efficiently solve existing position detecting system and there is the technology that real-time is poor, relatively costly
Problem, and then achieve position sensor and detection method is reasonable in design, real-time is preferably, output signal speed is fast, cost
Relatively low technique effect.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention；
Fig. 1 a-b is position sensor surface placement schematic diagram in the application；
Fig. 2 is signal processing flow schematic diagram in position sensor in the application；
Fig. 3 a-b is that in the application, guidance light position on one-dimensional PSD is illustrated and the correction schematic diagram of calibration coefficient；
Fig. 4 a-c is several situation schematic diagrams that in the application, position coordinates initial point resets；
Wherein, 1-one-dimensional position sensitive device, 2-housing, 3-coordinate system, 4-light, 5-circuit board, 6-electronic component, 7-connects
Mouthful, 8-one-dimensional position sensitive device center, 9-normal place process circuit, 10-the first operational amplifier, 11-the first resistance,
12-position display scale regulation resistance, 13-location bias arranges regulation resistance, 14-the second operational amplifier, and 15-position exports
Signal end.
Detailed description of the invention
The invention provides a kind of position sensor and detection method thereof, solve existing position detecting system and exist real
The technical problem that time property is poor, relatively costly, it is achieved that position sensor and detection method thereof are reasonable in design, real-time preferably,
Output signal speed technique effect fast, lower-cost.
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, real with concrete below in conjunction with the accompanying drawings
The present invention is further described in detail by mode of executing.It should be noted that in the case of mutually not conflicting, the application's
Feature in embodiment and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but, the present invention also may be used
To use other other modes being different from the range of being described herein to implement, therefore, protection scope of the present invention is not subject to down
The restriction of specific embodiment disclosed in face.
Technical scheme in the application particularly as follows:
The structure of L-type position sensor realizes: by two panels one-dimensional position sensitive device 1 i.e. (one-dimensional PSD device) according to mutually
Vertically and present the form of L-type and be welded and fixed and be arranged on circuit board 5, whole circuit board 5 is then arranged in a housing 2,
As shown in figure 1 a-b, electronic component 6 grade on circuit board 5 all designs the back side installed at PSD device, and circuit board contains
All of signal processing circuit, outgoing position signal is exported by the interface 7 being arranged on housing 2, and interface 7 is not limited to be arranged on
After housing 2, it is also possible to be installed on the position such as side of housing 2, housing 2 is not limited to circle, the shape such as square, meets peace
Dress, firm requirement.
The purposes of L-type position sensor: this detector is to cooperate with being intersected by a kind of yi word pattern laser designation light source constituting
Guidance light carries out position sensing, and to be realized with a low cost for the detection in the big scope of a kind of Area comparison, yi word pattern
Instruction LASER Light Source can use with Bao Weier prism constitute simple type commercialization universal indicator tool.Instruction light source
Constituting and require as shown in the light 4 in Fig. 1, it is made up of the wire light of orthogonal two strips, two light
Respectively fall on two one-dimensional PSDs, obtain light position on one-dimensional PSD by processing, thus obtain two guidance lights
The position in light source cross point.
The process of position signalling: for one-dimensional PSD detector a, it is only necessary to high stability, in high precision is provided
Power supply get final product work, integrated voltage source as such in AD581 can be used, therefore, its drive circuit is extremely simple.Light falls
Being away from X on its surface from the distance of one-dimensional position sensitive device center 8, one-dimensional PSD detector then exports two current signals
Ix1, Ix2, process circuit 9 to the two current signal by the position signalling of standard and can obtain voltage letter corresponding for position X
Number, this voltage signal just represents light position X on PSD surface:
Wherein L is the effective length of PSD device.The output of position signalling is real-time, only relevant to circuit speed, and this
The speed of the signal processing circuit of sample generally individually can reach μ S magnitude, therefore, is one and is exceedingly fast for position sensing
Speed.Process in circuit in such standard, it is thus achieved that position signalling relative to detector centre position, it is adaptable to coordinate
Be 3 zero in middle situation；Substantial amounts of real data shows, so processes the positional information obtained and physical location
Between there may be the relation of coefficient calibration, such as, position output signal is+0.1V, and representing position is 1mm, but actual
Position is probably 1.01mm, and this is accomplished by being modified this, here it is the calibration of position signalling.Secondly, when applying in reality
When the zero requiring coordinate system 3 in system is positioned at the position of intersecting point of two PSD, position as shown in Figure 1, then need defeated
Go out signal to be further processed to directly obtain positional information and the display requirement meeting so requirement, here it is position letter
Number bias treatment.
The calibration of position signalling: in fig. 2, the output signal corresponding to position X processes through normal place process circuit 9
After can obtain light position signalling on PSD, but real output signal is probably X ' rather than X, as shown in Figure 3；Standard
The transformational relation such as straight line A in Fig. 3, actual transformational relation such as Fig. 3 cathetus B, it is however generally that, the difference between the two signal
The biggest, and there is certain proportionate relationship, but in precision measurement, need to be corrected further or fixed
Mark.For the calibration of this signal, have employed in Fig. 2 by first operational amplifier the 10, first resistance 11, the regulation of position display scale
The position signalling scaling circuit of the composition such as resistance 12 is carried out.(calibration coefficient is equivalent to more than 1 or little according to output signal situation
In 1 etc.), regulate the first resistance 11 and first obtain a position coefficient of association covering possible range of accommodation, then regulate position
Put display scale regulation resistance 12 and obtain final position calibration coefficient, regulate electricity by the first resistance 11 and position display scale
The combine regulation of resistance 12, it is however generally that actual converted relation B can be scaled on preferable transformational relation A, such as Fig. 3 a-b institute
Show, thus obtain the output signal numeral consistent with physical location or display effect.
The bias treatment of position signalling: obtaining accurately after the calibration coefficient of position, have employed in Fig. 2 by the second computing
Amplifier 14, location bias arrange the position signalling bias treatment circuit of the regulation composition such as resistance 13 to be carried out, this be one former
Manage simple add circuit.Regulation resistance 13 two ends are set at location bias and apply the positive and negative voltage of voltage regulation that scope is enough, pass through
Adjusting position biasing arranges regulation resistance 13, and the outfan at the second operational amplifier 14 can obtain the position output that offset by
Signal end 15, is connected to position output signal end 15 on output interface 7 by cable, is available for external data collection or gauge outfit face
Plate carries out directly displaying of position.The purpose of position signalling biasing is the most consistent with sensory effect by measurement result, or
Person meet be equivalent to measurement system zeroing requirement, using obtain any position can as measure starting point effect.It is a kind of
Bias treatment effect is as shown in the middle graph in Fig. 4, and it is the intersection that zero has been biased to two position sensitive detectors
At Dian, in this case, the starting point of final display measurement scope also has some deviation with initial point；But can essentially will sit
At any location point that mark initial point is offset in effective range, as shown in the right figure in Fig. 4, in this case, final is aobvious
Show that the starting point of measurement scope is consistent with initial point, and the scope of measurement is consistent with device effective length.
By the signal processing of above-mentioned two step, the corresponding relation between physical location is become by the voltage signal of display
Relation one to one, and meet the position instruction requirement of different zero；And in order to improve the fine degree of signal processing,
Operational amplifier have employed high-precision operational amplifier, and adjustable resistance have employed the precision potentiator of multi-turn.Use such
Detector, the process of its position signalling is real-time, it is not necessary to the association driving carrying out detector can also obtain multiple spy simultaneously
Survey the position output of device, significant when multiple detectors are needed to use simultaneously, the position of output signal representative
It is direct for putting meaning, and display is simple.
As replaced one-dimensional PSD with line array CCD in this detector, then corresponding change drives and signal processing circuit, simultaneously
The data processing technique utilizing signal obtains measures positional information, it is also possible to complete same position sensing, but in real-time side
Face is then greatly lowered.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:
The invention has the beneficial effects as follows, utilize one to be combined into cross modal conduct by yi word pattern laser designation linear light source
Instruction light source, and uses position sensor, by employing process circuit the output signal of detector therein is processed and
Obtaining linear light source accurate location on the detector, this mode avoids answering required for using line array CCD or area array CCD
Miscellaneous signal driver circuit and the output signal treatment technology of high request, have the spy of fast, the high real-time of output signal speed
Point；And based on the fireballing feature of hardware effort, improve the real-time of detector output signal；The device used is without multiple
Miscellaneous Digital Circuit Signal drives, and the process of its output signal have employed relatively simple operation amplifier circuit, outgoing position
The meaning of signal is the most direct, it is not necessary to further data process and conversion, simplify signal processing step；Detector is the most defeated
Out position signal, real-time, when multi-detector uses, there is not synchronously driven problem simultaneously, reduce single and multiple
Detector uses difficulty, so, efficiently solve existing position detecting system and there is the technology that real-time is poor, relatively costly
Problem, and then achieve position sensor and detection method is reasonable in design, real-time is preferably, output signal speed is fast, cost
Relatively low technique effect.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. a position sensor, it is characterised in that described position sensor includes:
First one-dimensional position sensitive device, the second one-dimensional position sensitive device, normal place process circuit, position signalling scaling circuit,
Position signalling bias treatment circuit, wherein, the first one-dimensional position sensitive device, the second one-dimensional position sensitive device all with normal place at
Reason circuit connects, and normal place processes circuit and is connected with position signalling scaling circuit, position signalling scaling circuit and position signalling
Bias treatment circuit connects, the angle between one end and one end of the second one-dimensional position sensitive device of the first one-dimensional position sensitive device
Being 90 degree, the output current signal of acquisition is transferred to normal place process circuit and carries out signal fortune by 2 one-dimensional position sensitive devices
Calculation processes, and obtains position indicative signal；Then this position indicative signal is transferred to position signalling scaling circuit demarcate
The correction process of coefficient, it is thus achieved that the position indicative signal corresponding with physical location；Then after position signalling scaling circuit being processed
Signal be transferred to position signalling bias treatment circuit and carry out the bias treatment of the initial initial point of position signalling, it is thus achieved that zero quilt
Reset position signalling, and last from outfan outgoing position signal.
Position sensor the most according to claim 1, it is characterised in that described position sensor also includes that circuit board is with outer
Shell, the first one-dimensional position sensitive device, the second one-dimensional position sensitive device, normal place process circuit, position signalling scaling circuit, position
Confidence bias treatment circuit is each attached on circuit board, and circuit board is fixing in the enclosure.
Position sensor the most according to claim 1, it is characterised in that described position signalling scaling circuit includes: first
Operational amplifier, the first resistance, position display scale regulation resistance, wherein, the in-phase input end of the first operational amplifier and mark
Level puts the outfan connection processing circuit, the inverting input of the first operational amplifier and one end of the first resistance, ground connection electricity
Resistance is all connected with, the outfan of the first operational amplifier and the other end of the first resistance, position display scale regulation resistance the first end
Being all connected with, the adjustable side of position display scale regulation resistance is connected with the input of position signalling bias treatment circuit, and position shows
Showing that scale regulates resistance the second end ground connection, the resistance of the first resistance is adjustable.
Position sensor the most according to claim 1, it is characterised in that described position signalling bias treatment circuit specifically wraps
Include: location bias arranges regulation resistance, the second operational amplifier, position output signal end, wherein, the second operational amplifier same
The adjustable side that phase input arranges regulation resistance with the position display scale regulation adjustable side of resistance, location bias is all connected with, the
The inverting input of two operational amplifiers is connected with earth resistance, the outfan of the second operational amplifier and position output signal end
Connecting, location bias arranges regulation resistance the first end and the second end is connected with the both positive and negative polarity of power supply respectively.
5. a location detection methods, it is characterised in that described method includes:
Step 1: utilize orthogonal 2 one-dimensional position sensitive devices acquisition and position to have the current signal of corresponding relation；
Step 2: utilize normal place to process the circuit position corresponding current signal to obtaining, current signal is carried out at computing
Reason, and be converted to the voltage signal that position is corresponding；
Step 3: the signal after utilizing position signalling scaling circuit to process step 2 carries out the process of calibration coefficient, it is thus achieved that with reality
The position voltage signal that position, border is corresponding；
Step 4: the signal after utilizing position signalling bias treatment circuit to process step 3 carries out the inclined of the initial initial point of position signalling
Put process, it is thus achieved that the position signalling that zero has been reset, and from outfan outgoing position signal.
Location detection methods the most according to claim 5, it is characterised in that described position signalling scaling circuit includes: the
One operational amplifier, the first resistance, position display scale regulation resistance, wherein, the in-phase input end of the first operational amplifier with
Normal place processes the outfan of circuit and connects, the inverting input of the first operational amplifier and one end of the first resistance, ground connection
Resistance is all connected with, the outfan of the first operational amplifier and the other end of the first resistance, position display scale regulation resistance first
End is all connected with, and the adjustable side of position display scale regulation resistance is connected with the input of position signalling bias treatment circuit, position
Display scale regulation resistance the second end ground connection, the resistance of the first resistance is adjustable.
Location detection methods the most according to claim 5, it is characterised in that described position signalling bias treatment circuit is concrete
Including: location bias arranges regulation resistance, the second operational amplifier, position output signal end, wherein, the second operational amplifier
The adjustable side that in-phase input end arranges regulation resistance with the position display scale regulation adjustable side of resistance, location bias is all connected with,
The inverting input of the second operational amplifier is connected with earth resistance, the outfan of the second operational amplifier and position output signal
End connects, and location bias arranges regulation resistance the first end and the second end is connected with the both positive and negative polarity of power supply respectively.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000560A (en) * | 2017-12-29 | 2018-05-08 | 河南科技大学 | A kind of transplanter manipulator vibration detection device and detection method |
| CN109405744A (en) * | 2018-12-26 | 2019-03-01 | 中国工程物理研究院流体物理研究所 | A kind of test device, installation method and the application method of spot center spatial position |
| CN113544501A (en) * | 2018-10-01 | 2021-10-22 | 齐保索尼克斯有限公司 | Method and device for determining properties of intermediate layer |
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| CN109405744B (en) * | 2018-12-26 | 2024-01-23 | 中国工程物理研究院流体物理研究所 | Testing device for space position of light spot center, installation method and use method |
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