CN109029230A - Tangent displacement sensor measuring device and measuring circuit - Google Patents
Tangent displacement sensor measuring device and measuring circuit Download PDFInfo
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- CN109029230A CN109029230A CN201810643747.7A CN201810643747A CN109029230A CN 109029230 A CN109029230 A CN 109029230A CN 201810643747 A CN201810643747 A CN 201810643747A CN 109029230 A CN109029230 A CN 109029230A
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- sensor
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- data conversion
- contact plate
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of tangent displacement sensor measuring devices.It include: measurement portion and data conversion unit, measurement portion includes shell, and interconnecting piece and the data conversion unit of case top are detachably connected；It is provided with support arm on interconnecting piece, extends to housing bottom；Shell inner sensor is electrically connected with data conversion unit；Sensor first end is fixed in measuring pen, and the second end lower than first end is fixed on support arm；The probe stretched out from housing bottom face is arranged in moveable measuring pen end up and down in shell, and relative motion occurs with measured body, pushes measuring pen to moving up, first end generates strain far from second end, and data conversion unit completes measurement.The invention also discloses a kind of tangent displacement sensor measuring circuits.The present invention is based on flexible strain transducers to be measured using matched detachable structure, improves system flexibility, original signal sensitivity and accuracy of measurement；Reduce circuit complexity；It is simple with structure, measure fast advantage.
Description
Technical field
The present invention relates to sensor technical fields, more particularly to a kind of tangent displacement sensor measuring device and measurement
Circuit.
Background technique
Tangent displacement sensor measuring device is a kind of common dimensional measurement sensor in industry, is often surveyed with three coordinates
The equipment such as amount instrument are used in combination, and are essential measuring devices during modernization produces.Conventional contact displacement sensor dress
It sets and is usually measured with technical solutions such as mechanical, differential transformer type, grating scales.
If Chinese patent literature CN1108384A discloses " contact type displacement sensing device measuring device ", in
State patent document CN107003118A is disclosed " displacement sensor, displacement detector and displacement detecting method ", two patents
Document is moved using grating scale contraposition and is measured, and converts light intensity signal for displacement, and is further converted into electric signal reading.With
Upper patent the problem is that: structure is complicated, and there is complicated optical path in inside；Signal acquisition difficulty is high, and post processing circuitry is complicated.
If Chinese patent literature CN107255439A discloses " a kind of linear movement pick-up excitation and signal demodulating method ",
It specifically discloses and is measured using differential transformer, convert inductance signal for displacement, and further use ac-excited source
Inductance is read.The patent the problem is that: signal processing difficulty height, system complexity height etc..
Summary of the invention
Based on the above issues, the purpose of the present invention is to provide a kind of tangent displacement sensor measuring device, the measurements
Device is based on flexible strain transducer and is measured using matched detachable mounting structure, and it is flexible to improve system
The sensitivity and accuracy of measurement of degree, original signal；Reduce circuit complexity；And the measuring device has structure simple,
It is convenient for changing, the fast advantage of measuring speed.
Another object of the present invention is to provide a kind of measuring circuits of above-mentioned tangent displacement sensor measuring device.
Above-mentioned purpose is achieved through the following technical solutions:
According to an aspect of the present invention, tangent displacement sensor measuring device provided by the invention, comprising: measurement portion
And data conversion unit, the measurement portion include: shell, are removably mounted on the interconnecting piece of the case top, and are located at
The intracorporal sensor of shell and measuring pen, wherein the measurement portion is detachably connected by interconnecting piece and data conversion unit, the biography
Sensor is electrically connected with the data conversion unit, and the measuring pen is removable up and down in shell, the end setting of the measuring pen
There is probe, the probe stretches out shell from the bottom face of shell；Support arm, and the support arm are additionally provided on the interconnecting piece
Extend to the intracorporal bottom of shell；The sensor is flexible strain transducer, and first end is fixedly connected in the measuring pen, the
Two ends are fixedly connected on the support arm, and the first end is higher than the second end；The probe contacts measured body surface
And when relative motion occurs with it, probe is jacked up, and measuring pen is pushed to move up, and drives the first end of sensor to moving up
Dynamic, for the first end of sensor far from second end, the sensor, which stretches, generates strain, is converted into signal and is transmitted to data conversion unit,
It completes to measure by the data conversion unit.
Preferably, hole is provided on the end face of the interconnecting piece, the top of measuring pen is extend into interconnecting piece from the hole.
The position that the setting in hole limits measuring pen move up and down measuring pen can only in hole vertically, avoid measuring pen in shell
Internal portion horizontal direction wobble effects measurement result.
It is highly preferred that further including elastic element in the shell, for limiting the shift motion of the measuring pen, and it is used for
Spring back the measuring pen.Further, the elastic element is sleeved in measuring pen, and the elastic element is located at the of sensor
Between one end and the lower end surface of interconnecting piece, the measuring pen is moved up, and the elastic element is compressed to the lower end surface of interconnecting piece,
Sensor is stretched, and after measurement, spring is sprung back downwards, and measuring pen is resetted.The setting of elastic element limits measuring pen most
Big moving range, and measuring pen can be recoiled to original position after measurement, the automation of measuring device is realized to a greater degree.
It is highly preferred that having snapped connection the first fixing piece in the measuring pen, second has been snapped connection on the support arm
Fixing piece, the first end and second end of the sensor are separately fixed on the end face of the first fixing piece and the second fixing piece.It adopts
With the first fixing piece, the second fixing piece and the mode snapped connection, so that replacing sensor is more convenient, more quickly；And
And first fixing piece can function as the stop bit part of elastic element.
Preferably, the sensor is graphene flexibility strain transducer, and the sensor includes: substrate and sensing material
Material, the substrate are made of dimethyl silicone polymer, and the sensing material uses the grapheme material system with network
At.It is highly preferred that being connect using conducting resinl and conducting wire with lower contact plate.
Preferably, lower contact plate is additionally provided in the interconnecting piece, the sensor is electrically connected with the lower contact plate, institute
Lower contact plate is stated to be electrically connected with the data conversion unit.Wherein, the connection type of electrical connection is detachable connection method, is facilitated
The replacement of sensor, data conversion unit etc. improves the flexibility of system.It is highly preferred that the sensor extraction wire passes through
Row's female is connect with the lower contact plate, and the lower contact plate is connect by spring needle with the data conversion unit.
It is highly preferred that one end of the interconnecting piece is mounted on the top of the shell, the other end by the first spinner structure
It is connect by the second spinner structure with the data conversion unit.
It is highly preferred that the shape of the tangent displacement sensor measuring device is pen shape, pen tip is probe, and nib is to survey
Amount portion, a tail are data conversion units.Pen shape measuring device makes structure of the invention simpler, more convenient operation.
According to another aspect of the present invention, a kind of tangent displacement sensor measuring circuit provided by the invention, comprising: survey
Measure unit, and the sample circuit unit connecting with measuring unit, wherein the measuring unit, comprising: flexible strain sensing
Device, and the lower contact plate being connect with flexible strain transducer；The sample circuit unit, comprising: connect with the lower contact plate
The upper contact plate connect, the analog to digital conversion circuit plate being connect with the upper contact plate, the master control being connect with analog to digital conversion circuit plate, electricity
Source plate, the master control, power panel are connect by power interface with host computer；The flexibility strain transducer converts elongation strain
For analog signal, analog to digital conversion circuit plate is transmitted to by lower contact plate and upper contact plate, the electric current in analog to digital conversion circuit plate
Digital analog converter measures the voltage at sensor both ends, and is transmitted to master control, power panel, exports through power interface.This hair
Bright middle measuring unit is moved using flexible strain transducer contraposition and is measured, and the sensitivity of original signal is improved, and is reduced pair
The requirement of sample circuit unit, the sample circuit cellular construction is simple, circuit complexity, measuring speed is fast, accuracy is high.
The utility model has the advantages that
The present invention is based on flexible strain transducers to be measured using matched quick release mounting structure, is mentioned
The high sensitivity and accuracy of measurement of system flexibility, original signal；Reduce circuit complexity；And the measuring device has
There is structure simple, is convenient for changing, the fast advantage of measuring speed.
Present invention employs measurement portions and the independent multisection type detachable mounting structure of data conversion unit, can be with quick-replaceable
Sensor and sample circuit, while sample circuit is multiplexed in other equipment, improve the flexibility of system；Using high-precision
The technologies contraposition such as degree analog to digital conversion circuit plate moves the sensitivity for measuring, improving original signal, reduces sample circuit
Complexity, and accuracy of measurement is high.
Detailed description of the invention
Fig. 1 is the overall structure diagram of tangent displacement sensor measuring device of the present invention；
Fig. 2 is the structural schematic diagram of measurement portion in measuring device preferred embodiment of the present invention；
Fig. 3 is the structural schematic diagram of data conversion unit in measuring device preferred embodiment of the present invention；
Fig. 4 is the circuit design schematic diagram of tangent displacement sensor measuring circuit of the present invention；
Fig. 5 is the program operation schematic diagram of tangent displacement sensor measuring circuit of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description:
Fig. 1 schematically shows the external overall structure of tangent displacement sensor measuring device；Fig. 2 schematically shows
The internal structure of measurement portion in measuring device preferred embodiment is gone out；Fig. 3 schematically shows measuring device preferred embodiment
The structure of middle data conversion unit；Fig. 4 schematically shows the circuit design block diagrams of tangent displacement sensor measuring circuit；Figure
5 schematically show the program operation block diagram of tangent displacement sensor measuring circuit.
As shown in Figure 1, 2, the present invention provides a kind of tangent displacement sensor measuring device, which includes: measurement portion
100 and data conversion unit 200, the measurement portion 100 includes: shell 120, is removably mounted on 120 top of shell
Interconnecting piece 110 and measuring pen 133 and sensor in shell 120, wherein the measurement portion 100 passes through interconnecting piece
110 are detachably connected with data conversion unit 200, and the sensor is electrically connected with the data conversion unit 200, the measuring pen
133 is removable up and down in shell 120, and the end of the measuring pen 133 is provided with probe 134, and the probe 134 is from shell
120 bottom face stretches out shell 120；It is additionally provided with support arm 111 on the interconnecting piece 110, and the support arm 111 is to shell
Bottom in 120 extends；The sensor is flexible strain transducer, and first end is fixedly connected in the measuring pen 133, the
Two ends are fixedly connected on the support arm 111, and the first end is higher than the second end；The contact of probe 134 is tested
Body surface face and when relative motion occurs with it, probe 134 is jacked up, and measuring pen 133 is pushed to move up, and drives the of sensor
One end moves up, and for the first end of sensor far from second end, the sensor, which stretches, generates strain, is converted into signal and is transmitted to number
According to converter section 200, complete to measure and export by the data conversion unit 200.As shown in Figure 1, contact position of the present invention
The shape of displacement sensor measuring device is pen shape, and pen tip is probe 134, and nib is measurement portion 100, and a tail is data conversion unit
200。
In one alternate embodiment, it is provided with hole on the end face of the interconnecting piece 110, the top of measuring pen 133 is from institute
It states hole to extend into interconnecting piece 110, the position that the setting in hole limits measuring pen 133 erect measuring pen 133 can only in hole
It is mobile to ground, measuring pen 133 is avoided in 120 inner horizontal direction wobble effects measurement result of shell.
It in one alternate embodiment, further include elastic element in the shell 120, for limiting the measuring pen 133
Shift motion, and for springing back the measuring pen 133.Further, the elastic element is sleeved in measuring pen 133, institute
It states elastic element to be located between the first end of sensor and the lower end surface of interconnecting piece 110, the measuring pen 133 moves up, institute
It states elastic element to compress to the lower end surface of interconnecting piece 110, sensor is stretched, and after measurement, spring is sprung back downwards, by measuring pen
133 reset.In the present embodiment, elastic element is spring, and the diameter of the elastic element is greater than the aperture in the hole.Elastic element
Setting limit the maximum moving range of measuring pen 133, and measuring pen 133 can be recoiled to original position, more great Cheng after measurement
Realize to degree the automation of measuring device.
In the present invention, the second end of the sensor is fixedly connected on the support arm 111, is more convenient for sensing
The fixation of device second end easily facilitates the replacement of sensor, if open interconnecting piece 110 can be completed the disassembly of sensor with
Installation, is operated without going deep into 120 lower part of shell；Meanwhile 111 end of support arm can also be by preventing 133 end of measuring pen
End is moved upward to the shift motion of limitation measuring pen 133.But sensor of the invention second end is not limited to be fixed on the branch
In brace 111.
In one alternate embodiment, as shown in Fig. 2, being provided with hole on the end face of interconnecting piece 110；Measuring pen 133 is positive
To L-type, bottom end is located at 120 bottom of shell and removes shell 120 for limiting measuring pen 133, and the top of measuring pen 133 is fixed to be connected
It is connected to bearing 131；The bearing 131 is extend into the interconnecting piece 110 from the hole, and bearing 131 moves up and down in hole, is made
Obtaining measuring pen 133 can only be mobile in the vertical direction in aperture, avoid shaking in the horizontal direction outside aperture.The bearing
Spring is set on 131, the diameter of spring is greater than the diameter in hole, and spring is located at the first fixing piece 141 and 110 hole of interconnecting piece place
Between end face, moved down by the first fixing piece 141 to control spring.The first fixing piece has been snapped connection in the measuring pen 133
141, the second fixing piece 142 has been snapped connection on the support arm 111, and the first end and second end of the sensor is fixed respectively
On the end face of the first fixing piece 141 and the second fixing piece 142.Using the first fixing piece 141, the second fixing piece 142 and card
The mode for detaining connection, so that replacing sensor is more convenient, more quickly；And first fixing piece 141 can function as elasticity
The stop bit part of element.Using the first fixing piece 141, the second fixing piece 142 and by the way of snapping connection, so that replacing sensor
It is more convenient, more quickly；And first fixing piece 141 can function as the stop bit part of elastic element.First fixing piece
141 and second fixing piece 142 can be fixture, the fixed forms such as gluing also can be used.When using measuring device of the present invention into
When row measurement, 0 grade of slip gauge is measured first, measuring device is placed on test desk, and is gripped entirely with fixed frame
Measuring device contacts probe 134 with test desk, demarcates zero point.Then by 0 grade of slip gauge of 1.5mm as test desk table top with
Between probe 134, measure.Finally, slip gauge thickness is measured, measurement standard difference 37um.
In the present invention, the sensor is graphene flexibility strain transducer, comprising: substrate and sensing material, the base
Bottom is made of dimethyl silicone polymer (PDMS), and the sensing material uses the grapheme material with network to be made.
It is highly preferred that the sensor extraction wire is connected to the lower contact plate by conducting resinl.
In one alternate embodiment, be additionally provided with lower contact plate in the interconnecting piece 110, the sensor and it is described under
Contact plate electrical connection, the lower contact plate are electrically connected with the data conversion unit 200, and the data conversion unit 200 passes through modulus
Conversion circuit (ADC) plate acquisition analog signal is completed to measure and export.Wherein, the connection type of electrical connection is the side of being detachably connected
Formula facilitates the replacement of sensor, data conversion unit 200 etc., improves the flexibility of system.It is highly preferred that the sensor
Extraction wire is connect by arranging female with the lower contact plate, and the lower contact plate passes through spring needle and the data conversion unit
200 connections.Dismountable electric connection mode facilitates sensor, number so that the circuit inside measuring device is detachably connected
According to the replacement of converter section 200 etc., the flexibility of system is improved.Analog signal, realization pair are acquired using analog to digital conversion circuit plate
Simple, the quick, precise measurement of displacement.
Further, one end of the interconnecting piece 110 is mounted on the top of the shell 120 by the first spinner structure,
The other end is connect by the second spinner structure with the data conversion unit 200.Further, the first spinner structure and second
Spinner structure is upper and lower bispin buckle structure.Preferably, the shell is the removable assembling structure being made of at least two parts.This hair
Detachable installation connection is carried out using spinner structure outside bright measuring device, inside is connected using removably electric connection mode
It connects, so that the apparatus structure is simple, it is convenient for disassembly and assembly.
Data conversion portion of the present invention includes the upper contact plate connecting with the lower contact plate in measurement portion 100, with upper contact plate
The ADC plate of connection, the master control being connect with ADC plate, power panel, the interface being connect with master control, power panel.As shown in figure 3, data turn
The one end in change portion is end cap, and the other end is provided with connection buckle 210, for carrying out spinner connection with measurement portion 100；Data conversion portion
It is internally provided with the fixing groove 220 for fixing master control, power panel and ADC plate, and the fixing card for fixed upper contact plate
Tool 230.
As shown in figure 4, the measuring circuit of tangent displacement sensor measuring device provided by the invention, comprising: measurement is single
Member, and the sample circuit unit being connect with measuring unit, wherein the measuring unit, comprising: flexible strain transducer, with
And lower contact plate connected to it；The sample circuit unit, comprising: the upper contact plate being connect with the lower contact plate, with institute
State the ADC plate (analog to digital conversion circuit plate) of contact plate connection, the master control connecting with ADC plate, power panel, the master control, power supply
Plate is connect and is exported with host computer by power interface；Elongation strain is converted analog signal by the flexibility strain transducer,
It is transmitted to ADC plate by lower contact plate and upper contact plate, the current D-A conveter (IDAC) in ADC plate is to sensor both ends
Voltage measures, and is transmitted to master control, power panel, then connect and export with host computer by power interface.Present invention measurement
Circuit and principle are simple, and sensor raw signals intensity is big, and it is much lower that the complexity of sample circuit compares current scheme, and is not required to
Want complicated front-end processing.In addition, the circuit design of separate type is one of the condition of Quick Release design.
In the present invention, in the master control, power panel include stm32f1 main control chip, tps61252 boost chip,
Mic5219-3.3 linear regulator chip, mic5219-5.0 linear regulator chip, USB-C base.Wherein, main control chip realizes
USB CDC virtual serial port agreement transmits etc. functions to the configuration and control of ADC chip, data；Boost chip is linearly steady with two panels
Pressure chip together provides low noise 3.3V and 5V power supply required for system works；USB-C base provides USB-C interface company
It connects, for data transmission and system power supply.Master control, power panel are attached by FPC winding displacement and ADC plate.
It is ADS1262 modulus conversion chip on ADC plate, current source needed for containing stimulus sensor in this chip
Current D-A conveter IDAC, and sensor both end voltage can be measured with 38.4kHz, 32 resolution ratio.ADC
Plate is attached by FPC winding displacement and master control, power panel and upper contact plate.Simulation letter is acquired using analog to digital conversion circuit ADC plate
Number, it can be achieved that the simple, quick of displacement, precise measurement.
Upper contact plate includes FPC winding displacement interface and spring needle.For connecting with ADC plate, spring needle is used for FPC winding displacement interface
It realizes and is electrically connected with the fast assembling-disassembling of lower contact plate.
Lower contact plate includes contact and row's maternal interface.Contact with the spring needle of upper contact plate for connecting；Maternal interface is arranged to use
In connection sensor lead.
The subprogram that measuring device of the present invention is run when measuring is as follows:
As shown in figure 5, initializing main control chip and ADC chip first, and the initial of ADC chip is arranged after system electrification
IDAC (exciting current) and DR (sample rate) value, subsequent main program enter idle loop.When adc data converts in generation sampling
When disconnected, main control chip reads the data of ADC conversion, after being verified and being passed through, transmits data by USB interface.When USB is received
When instruction, it will carry out including the behaviour for starting sampling, terminating sampling, new IDAC being arranged, new DR is arranged according to different instructions
Make.
It is moved and is measured using new measuring circuit contraposition the present invention is based on flexible strain transducer, and in order to adapt to measure
Scheme improves measuring device internal structure, uses measurement portion 100 and the independent two-part of data conversion unit 200 is quick
Disassembly and assembly structure reduces the complexity of sample circuit, and have structure simple to improve the sensitivity of original signal,
Measuring speed is fast, the high advantage of accuracy.Wherein, fast assembling disassembling structure of the present invention can with quick-replaceable sensor therein, adopt
Sample circuit, and sample circuit is facilitated to be multiplexed in other equipment, improve the flexibility of system.Usual sensor is in scientific research mission
In to sensor test when need replacing, needed replacing when sensor is damaged in actual use.Different sample circuits can
To provide different precision (different sampling A/D chips), the sensor (different front-end circuits) for being adapted to different resistance values, using not
Same mode carries out data transmission and power supply (wire/wireless).Sample circuit can be replaced according to specifically used demand.
The preferred embodiment of the present invention is described in conjunction with attached drawing above, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, is not restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very
Multi-form, these all fall within the protection scope of the present invention.
Claims (10)
1. a kind of tangent displacement sensor measuring device characterized by comprising measurement portion and data conversion unit, the survey
Amount portion includes: shell, is removably mounted on the interconnecting piece of the case top, and be located at the intracorporal sensor of shell and measurement
Pen, wherein
The measurement portion is detachably connected by interconnecting piece and data conversion unit, and the sensor is electrically connected with the data conversion unit
It connects；
The measuring pen is removable up and down in shell, and the end of the measuring pen is provided with probe, and the probe is from shell
Bottom face stretches out shell；
Support arm is additionally provided on the interconnecting piece, and the support arm extends to the intracorporal bottom of shell；
The sensor is flexible strain transducer, and first end is fixedly connected in the measuring pen, and second end is fixedly connected on
On the support arm, and the first end is higher than the second end；
When the probe contacts measured body surface and relative motion occurs with it, measuring pen is pushed to move up, drives sensor
First end move up, for sensor first end far from second end, the sensor generates strain, passes through the data conversion unit
Complete measurement.
2. tangent displacement sensor measuring device as described in claim 1, which is characterized in that the lower end surface of the interconnecting piece
On be provided with hole, the top of measuring pen is extend into interconnecting piece from the hole.
3. tangent displacement sensor measuring device as claimed in claim 2, which is characterized in that
Suit has elastic component in the measuring pen,
The elastic element is located between the first end of sensor and the lower end surface of interconnecting piece,
The measuring pen moves up, and the elastic element is compressed to the lower end surface of interconnecting piece, and sensor is stretched, after measurement,
Spring is sprung back downwards, and measuring pen is resetted.
4. tangent displacement sensor measuring device as described in any one of claims 1-3, which is characterized in that the measuring pen
On snapped connection the first fixing piece, snapped connection the second fixing piece on the support arm, the first end of the sensor and
Second end is separately fixed on the end face of the first fixing piece and the second fixing piece.
5. tangent displacement sensor measuring device as described in any one of claims 1-3, which is characterized in that the sensor
It include: substrate and sensing material, the substrate is made of dimethyl silicone polymer, and the sensing material, which uses, has grid knot
The grapheme material of structure is made.
6. tangent displacement sensor measuring device as described in any one of claims 1-3, which is characterized in that the interconnecting piece
It is inside additionally provided with lower contact plate, the sensor is electrically connected with the lower contact plate, the lower contact plate and the data conversion
Portion's electrical connection.
7. tangent displacement sensor measuring device as claimed in claim 6, which is characterized in that the sensor extraction wire
It is connect by row's female with the lower contact plate, the lower contact plate is connect by spring needle with the data conversion unit.
8. tangent displacement sensor measuring device as claimed in claim 7, which is characterized in that one end of the interconnecting piece is logical
The top that the first spinner structure is mounted on the shell is crossed, the other end is connected by the second spinner structure and the data conversion unit
It connects.
9. tangent displacement sensor measuring device as claimed in claim 8, which is characterized in that the contact displacement sensing
The shape of device measuring device is pen shape, and pen tip is probe, and nib is measurement portion, and a tail is data conversion unit.
10. a kind of tangent displacement sensor measuring circuit characterized by comprising measuring unit, and connect with measuring unit
The sample circuit unit connect, wherein
The measuring unit, comprising: flexible strain transducer, and the lower contact plate being connect with flexible strain transducer；
The sample circuit unit, comprising: the upper contact plate being connect with the lower contact plate, the mould being connect with the upper contact plate
Number conversion circuit plates, master control connect with analog to digital conversion circuit plate, power panel, the master control, power panel by power interface and
Host computer connection；
Elongation strain is converted analog signal by the flexibility strain transducer, is transmitted to mould by lower contact plate and upper contact plate
Conversion circuit plate is counted, the current D-A conveter in analog to digital conversion circuit plate measures the voltage at sensor both ends, and passes
Master control, power panel are transported to, is exported through power interface.
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| CN201810643747.7A CN109029230B (en) | 2018-06-21 | 2018-06-21 | Contact type displacement sensor measuring device and measuring circuit |
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| CN201810643747.7A CN109029230B (en) | 2018-06-21 | 2018-06-21 | Contact type displacement sensor measuring device and measuring circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114440752A (en) * | 2022-01-27 | 2022-05-06 | 深圳大学 | Wireless monitoring system and method based on variable-stiffness double-spring graphene displacement sensor |
| CN114485517A (en) * | 2022-01-27 | 2022-05-13 | 深圳大学 | Six-freedom-degree monitoring device for monitoring dislocation crack of tunnel segment |
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| CN114485517B (en) * | 2022-01-27 | 2023-04-25 | 深圳大学 | Six-degree-of-freedom monitoring device for monitoring tunnel segment staggered crack |
| CN114440752B (en) * | 2022-01-27 | 2023-06-20 | 深圳大学 | Wireless monitoring system and method based on graphene displacement sensor |
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