CN110514329A - A kind of passive two-dimensional code load transducer and preparation method thereof - Google Patents
A kind of passive two-dimensional code load transducer and preparation method thereof Download PDFInfo
- Publication number
- CN110514329A CN110514329A CN201910728305.7A CN201910728305A CN110514329A CN 110514329 A CN110514329 A CN 110514329A CN 201910728305 A CN201910728305 A CN 201910728305A CN 110514329 A CN110514329 A CN 110514329A
- Authority
- CN
- China
- Prior art keywords
- dimensional code
- load
- elastomer
- measurement portion
- deformation quantity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
Abstract
The embodiment of the invention provides a kind of passive two-dimensional code load transducer, the sensor includes: fixed part, and the fixed part is fixedly connected with a working face；Measurement portion, the measurement portion is springy elastomer, is fixedly connected with the fixed part, and the measurement portion is stretched out except the working face, the measurement portion includes: load disk, and the load disk is located at the outer surface at measurement portion deflection maximum loaded position；Two dimensional code, the two dimensional code are located at the maximum position of measurement portion deflection；Wherein, the load disk is by making the elastomer generate deformation by external force, so that the two dimensional code be made to generate deformation.It solves sensor in the prior art and needs external power supply, need to be powered preheating, leads to the technical problem that measurement efficiency is low, has reached the work of load transducer non-transformer, has improved the stability of load transducer, while reducing the technical effect of cost.
Description
Technical field
The present invention relates to sensor technical field more particularly to a kind of passive two-dimensional code load transducer and its preparation sides
Method.
Background technique
Conventional load cell is generally made of four part such as elastomer, insulator, strain gauge, power supply.When work, weight
Amount (or power) F is acted on elastomer first, and making elastomer, deformation occurs, this deformation leads to insulator and passes to strain gauge, is answered
Becoming meter, deformation occurs, causes the variation of strain gauge Wheatstone bridge resistance value, adds suitable voltage to strain gauge, and then exporting
End generates a voltage difference (pressure output electric signal), this voltage difference and weight (or power) F acted on elastomer are at just
The relationship of ratio.
But present invention applicant during technical solution, has found the above-mentioned prior art extremely in realizing the embodiment of the present invention
It has the following technical problems less:
Sensor in the prior art needs external power supply, and need to be powered preheating, transmits pressure by insulator, causes to survey
The low technical problem of amount efficiency.
Summary of the invention
The embodiment of the invention provides a kind of passive two-dimensional code load transducers, to solve sensor in the prior art
External power supply is needed, need to be powered preheating, transmits pressure by insulator, leads to the technical problem that measurement efficiency is low.
On the one hand, to solve the above-mentioned problems, the embodiment of the invention provides a kind of passive two-dimensional code load transducer, institutes
Stating sensor includes: fixed part, and the fixed part is fixedly connected with a working face；Measurement portion, the measurement portion are with elastic force
Elastomer, be fixedly connected with the fixed part, and the measurement portion is stretched out except the working face, the measurement portion includes:
Load disk, the load disk are located at the outer surface at measurement portion deflection maximum loaded position；Two dimensional code, the measurement portion
The maximum position of deformation quantity after loaded；Wherein, the load disk is by by external force, making the elastomer generate deformation, from
And the two dimensional code is made to generate deformation.
Preferably, the material of the elastomer is elastic material.
Preferably, the model of the elastic material includes 17-4ph stainless steel, 15-15ph stainless steel, 2Cr13
Stainless steel, 40CrNiMu elastic alloy.
Preferably, the two dimensional code is located at the top surface and/or bottom surface at the measurement portion rear deformation quantity maximum position loaded
The side and/or.
Preferably, the fixed part is fixedly connected by bolt with the working face.
Second aspect, it is described the embodiment of the present application also provides a kind of preparation method of passive two-dimensional code load transducer
Method includes: to process elastomer portion according to transducer range；The elastomer is heat-treated, the elastomer is eliminated
Residual stress and retained austenite；Two dimensional code is etched on the elastomer；According to deformation quantity of the two dimensional code after loaded,
Determine elastomer load value corresponding with the two dimensional code deformation quantity；The two dimensional code is scanned by two-dimensional code scanning instrument,
Read load value.
Preferably, the deformation quantity according to the two dimensional code after loaded, determines the elastomer and the two dimensional code
The corresponding load value of deformation quantity, comprising: load different calibration load on the load disk of the elastomer, record the elastomer
When by the different calibration load, the deformation quantity of the two dimensional code；The different calibration load are carried from the different calibration
The corresponding two dimensional code deformation quantity of lotus is brought into linear equation, and the measurement model of the sensor is established；According to the measurement model
With the deformation quantity of the two dimensional code, elastomer load value corresponding with the two dimensional code deformation quantity is determined.
Said one or multiple technical solutions in the embodiment of the present invention at least have following one or more technology effects
Fruit:
The embodiment of the invention provides a kind of passive two-dimensional code load transducers, and the sensor includes: fixed part, described
Fixed part is fixedly connected with a working face；Measurement portion, the measurement portion are springy elastomer, are fixed with the fixed part
Connection, and the measurement portion is stretched out except the working face, the measurement portion includes: load disk, and the load disk is located at described
The outer surface at measurement portion deflection maximum loaded position；Two dimensional code, the maximum position of deformation quantity after the measurement portion is loaded；
Wherein, the load disk is by making the elastomer generate deformation by external force, so that the two dimensional code be made to generate deformation.Solution
Sensor in the prior art of having determined needs external power supply, and need to be powered preheating, leads to the technical problem that measurement efficiency is low, reaches
The work of load transducer non-transformer has been arrived, has improved the stability of load transducer, while reducing the technical effect of cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of the passive two-dimensional code load transducer provided in the embodiment of the present invention；
Fig. 2 is a kind of flow chart of the preparation method of the passive two-dimensional code load transducer provided in the embodiment of the present invention.
Appended drawing reference: fixed part 1, measurement portion 2, load disk 3, two dimensional code 4.
Specific embodiment
The embodiment of the invention provides a kind of passive two-dimensional code load transducers, and solving sensor in the prior art needs
External power supply is wanted, need to be powered preheating, leads to the technical problem that measurement efficiency is low.
Technical solution in the embodiment of the present invention, overall structure are as follows: fixed part, and the fixed part is fixed with a working face
Connection；Measurement portion, the measurement portion are springy elastomer, are fixedly connected with the fixed part, and the measurement portion is stretched
Out except the working face, the measurement portion includes: load disk, and the load disk is located at measurement portion deflection loaded most
The outer surface at big position；Two dimensional code, the maximum position of deformation quantity after the measurement portion is loaded；Wherein, the load disk passes through
By external applied load, the elastomer is made to generate deformation, so that the two dimensional code be made to generate deformation.Load transducer is reached without electricity
Source work, improves the stability of load transducer, while reducing the technical effect of cost.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
The embodiment of the invention provides a kind of passive two-dimensional code load transducers, referring to FIG. 1, the sensor includes:
Fixed part 1, the fixed part 1 are fixedly connected with a working face；Measurement portion 2, the measurement portion 2 are springy
Elastomer is fixedly connected with the fixed part 1, and the measurement portion 2 is stretched out except the working face, and the measurement portion 2 includes:
Load disk 3, the load disk 3 are located at upper surface of the measurement portion 2 far from described 1 one end of fixed part；Two dimensional code 4, described two
Tie up the outer surface that code 4 is located at the measurement portion 2 rear deflection maximum position loaded；Wherein, the load disk 3 is by by outer
Load makes the elastomer generate deformation, so that the two dimensional code 4 be made to generate deformation.
Specifically, fixed part 1 can be fixed in several ways on a working face, it is able to maintain fixed part 1 solid
Fixed motionless state, working face can be desktop, testing stand etc., and one end of the fixed part 1 connects measurement portion 2, and measurement portion 2 is used
In dynamometry or again, one end of the measurement portion 2 is connect with fixed part 1, and the other end stretches out that is, described measurement outside working face
Portion 2 be it is hanging, in order to weigh or guarantee when dynamometry that deformation is not influenced by the external world, can freely generate deformation, the measurement portion 2
Material be a kind of elastomer material with certain elasticity, guarantee it is loaded after can generate deformation and recovery when not loaded
Deformation, the one end of measurement portion 2 far from fixed part 1 are set above the one end of measurement portion 2 far from fixed part 1 for weighing or dynamometry
It is equipped with load disk 3, when sensor levels are placed, load to be measured exerts a force to load disk 3 from vertical direction, so that measurement portion
2 generate deformation, are etched with two dimensional code 4 close to one end of fixed part 1 in measurement portion 2, since measurement portion 2 is generated by external force
Deformation, so that two dimensional code 4 of the etching in measurement portion 2 generates deformation simultaneously, it is preferred that since measurement portion 2 is close to fixed part 1
Position, that is, the position farthest apart from point loaded, the deformation quantity of this position are maximum in the deformation quantity of entire measurement portion 2
, by the etching of two dimensional code 4 in this region, deformation quantity the most apparent, situation loaded in this way and two dimensional code shape can be generated
Relationship between variable is more accurate, can obtain force measurements better by the deformation situation of two dimensional code 4.
Further, the material of the elastomer is elastic material.The model of the elastic material includes 17-4ph stainless
Steel, 15-15ph stainless steel, 2Cr13 stainless steel, 40CrNiMu elastic alloy.
Specifically, the material of the elastomer of measurement portion 2 can be elastic material, common model includes 17-4ph stainless
Steel, 15-15ph stainless steel, 2Cr13 stainless steel, 40CrNiMu elastic alloy etc., the material of elastomer is also possible to other can
Reach the other materials of same or similar effect, equally includes other existing or following that will be apparent that with identical or phase
The new material of nearly attribute.The elastically-deformable range of the elastomer is, such as takes 1 meter of long elastomer, by certain external force
Effect after deformation be not more than 1000 microns, and external force releasing after resile.
Further, the two dimensional code 4 is located at the measurement portion 2 close to the top surface and/or bottom surface of described 1 one end of fixed part
The side and/or.
Specifically, two dimensional code 4 can be etched to be leaned in measurement portion 2 in order to be convenient for checking when reading and measuring numerical value
Any one side or multi-panel of nearly 1 one end of fixed part, enable staff easily to see the deformation situation of two dimensional code.
Further, the fixed part 1 is fixedly connected by bolt 5 with the working face.
It, can be by bolt 5 by fixed part 1 and work specifically, in order to enable fixed part 1 and face stabilizer to fix
Make face connection, to reach fixed effect.
Passive load measurement may be implemented in the load transducer that the embodiment of the present application passes through；Load measurement is eliminated to need to lead to
The problem of electric preheating, realizes measurement load immediately；The response speed of the load measurement of raising；The load transmission that disappeared institute band it is slow
Stagnant, creep equal error；The problems such as eliminating cable and electrical cnnector and sealing.Realize the work of load transducer non-transformer；
Because unpowered power supply improves the stabilization of pressure sensor just without being powered to load transducer bring thermal drift
Property；Cost is reduced than conventional pressure sensor very much, because such load transducer does not need power supply and transmission cable and electricity
Connector；Simple production process is at low cost；It is highly suitable in the environment of long-term work and power supply inconvenience.
Embodiment two
The embodiment of the present application also provides a kind of preparation method of passive two-dimensional code load transducer as shown in Fig. 2, using
The sensor described in embodiment one, comprising:
Step 110: processing elastomer portion according to transducer range；
Step 120: the elastomer being heat-treated, residual stress and the retained austenite of the elastomer are eliminated；
Step 130: etching two dimensional code on the elastomer；
Step 140: according to deformation quantity of the two dimensional code after loaded, determining the elastomer and the two dimensional code deformation
Measure corresponding load value；
Step 150: the two dimensional code being scanned by two-dimensional code scanning instrument, reads load value.
Specifically, the elastomer for meeting range needs is processed first, in accordance with the needs of different ranges, according to range
It needs, determines the size and depth information of elastomer；Then the elastomer for determining size is heat-treated, to eliminate
Retained austenite in the residual stress and material structure of machining is finally reached the stability of material of requirement；And it is handling
Original two-dimensional code is etched close to the position of fixed part on elastomer afterwards；Then formulate the measurement standard of load transducer, load
Normal loading and when recording various criterion load value two dimensional code corresponding pattern --- calibration finally selects matched two dimensional code to sweep
Instrument is retouched, two dimensional code is scanned, reads load value.
Further, the deformation quantity according to the two dimensional code after loaded, determines the elastomer and the two dimension
The corresponding load value of code deformation quantity, comprising: load different calibration load on the load disk of the elastomer, record the elasticity
When body is by the different calibration load, the deformation quantity of the two dimensional code；By the different calibration load and the different calibration
The corresponding two dimensional code deformation quantity of load is brought into linear equation, and the measurement model of the sensor is established；According to the measurement mould
The deformation quantity of type and the two dimensional code determines elastomer load value corresponding with the two dimensional code deformation quantity.
For example, the 100000kg that loads 1kg, 2kg, 5kg and 10kg respectively on the load disk of the elastomer ...
Counterweight, record the elastomer by 1kg, 2kg, 5kg and 10kg ... when the load of the counterweight of 100000kg, two dimensional code
Relative to not by external force when the deformation quantity that generates, for example, two dimensional code when not acted on by load, is initial two
Code figure is tieed up, at this moment deformation quantity is 0, and when by 1kg external force, two-dimension code pattern becomes since property occurs for elastomer, thus
Generate graphic change, by this time two-dimension code pattern and original two-dimensional code figure compare, obtain by 1kg external force phase
Corresponding two dimensional code deformation quantity.As described above, record multiple situation loaded respectively, by the different calibration load with it is described
The corresponding two dimensional code deformation quantity of difference calibration load is brought into linear equation y=kx+b, wherein x and y respectively represents the power being subject to
With two dimensional code deformation quantity.The measurement model for determining sensor, when needing to carry out dynamometry or again using the load transducer
When, apply load to be measured to load disk, with the dimensional code scanner of load sensor measurement model to the sensor two dimensional code
It is scanned, the size of load to be measured can be read.
The technical solution provided in the embodiment of the present invention, has at least the following technical effects or advantages:
The embodiment of the invention provides a kind of passive two-dimensional code load transducers, and the sensor includes: fixed part, described
Fixed part is fixedly connected with a working face；Measurement portion, the measurement portion are springy elastomer, are fixed with the fixed part
Connection, and the measurement portion is stretched out except the working face, the measurement portion includes: load disk, and the load disk is located at described
The outer surface at measurement portion deflection maximum loaded position；Two dimensional code, the maximum position of deformation quantity after the measurement portion is loaded；
Wherein, the load disk is by making the elastomer generate deformation by external applied load, so that the two dimensional code be made to generate deformation.
It solves sensor in the prior art and needs external power supply, need to be powered preheating, lead to the technical problem that measurement efficiency is low,
Reach the work of load transducer non-transformer, improves the stability of load transducer, while reducing the technical effect of cost.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of passive two-dimensional code load transducer, which is characterized in that the sensor includes:
Fixed part, the fixed part are fixedly connected with a working face；
Measurement portion, the measurement portion are springy elastomer, are fixedly connected with the fixed part, and the measurement portion is stretched out
Except the working face, the measurement portion includes:
Load disk, the load disk are located at the outer surface at measurement portion deflection maximum loaded position；
Two dimensional code, the two dimensional code are located at the measurement portion rear maximum position of deformation quantity loaded；
Wherein, the load disk is by making the elastomer generate deformation by external force, so that the two dimensional code be made to generate shape
Become.
2. sensor as described in claim 1, which is characterized in that the material of the elastomer is elastic material.
3. sensor as claimed in claim 2, which is characterized in that the model of the elastic material include 17-4ph stainless steel,
15-15ph stainless steel, 2Cr13 stainless steel, 40CrNiMu elastic alloy.
4. sensor as described in claim 1, which is characterized in that the two dimensional code is located at the measurement portion rear deformation loaded
The top surface and/or bottom surface at the maximum position of amount and/or side.
5. sensor as described in claim 1, which is characterized in that the fixed part connects by the way that bolt and the working face are fixed
It connects.
6. a kind of preparation method of passive two-dimensional code load transducer, which is characterized in that the method is used to prepare right such as and wants
Any one power of 1-5 is asked to remove the sensor, which comprises
According to the thin and thick of transducer range processing elastomer strain part；
The elastomer is heat-treated, residual stress and the retained austenite of the elastomer are eliminated；
Two dimensional code is etched on the elastomer；
According to deformation quantity of the two dimensional code after loaded, elastomer load corresponding with the two dimensional code deformation quantity is determined
Value；
The two dimensional code is scanned by two-dimensional code scanning instrument, reads load value.
7. method as claimed in claim 6, which is characterized in that the deformation quantity according to the two dimensional code after loaded, really
Fixed elastomer load value corresponding with the two dimensional code deformation quantity, comprising:
Different calibration load are loaded on the load disk of the elastomer, record the elastomer by the different calibration load
When, the deformation quantity of the two dimensional code；
Different calibration load two dimensional code deformation quantity corresponding with the different calibration load is brought into linear equation, foundation
The measurement model of the sensor；
According to the deformation quantity of the measurement model and the two dimensional code, determine that the elastomer is corresponding with the two dimensional code deformation quantity
Load value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728305.7A CN110514329A (en) | 2019-08-08 | 2019-08-08 | A kind of passive two-dimensional code load transducer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728305.7A CN110514329A (en) | 2019-08-08 | 2019-08-08 | A kind of passive two-dimensional code load transducer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110514329A true CN110514329A (en) | 2019-11-29 |
Family
ID=68625361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910728305.7A Pending CN110514329A (en) | 2019-08-08 | 2019-08-08 | A kind of passive two-dimensional code load transducer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110514329A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004018965A1 (en) * | 2002-08-20 | 2004-03-04 | Reginald Vachon | Compressed symbology strain gauge |
| CN1517594A (en) * | 2003-01-10 | 2004-08-04 | ���ǵ�����ʽ���� | Weight checking device for microwave oven |
| US20090225167A1 (en) * | 2008-03-10 | 2009-09-10 | Shimadzu Corporation | Gauge line position measuring device, program for measuring a gauge line position, and gauge line mark |
| US20090326836A1 (en) * | 2006-08-17 | 2009-12-31 | Gregory L Hovis | Two dimensional bar code having increased accuracy |
| CN201464019U (en) * | 2009-04-29 | 2010-05-12 | 北京清泰工贸有限责任公司 | Cushion damping resistance strain-gauge weighing transducer |
| CN101776473A (en) * | 2010-01-28 | 2010-07-14 | 昆明理工大学 | Differential strain type optical fiber Bragg raster-suspended belt scale |
| CN103376065A (en) * | 2012-04-26 | 2013-10-30 | 北京隆盛泰科石油管科技有限公司 | Classified bar code extensometer system and method for measuring whole stress-strain curve |
| CN104374453A (en) * | 2014-12-03 | 2015-02-25 | 烟台钧杰衡器有限公司 | Multichannel digitized intelligent unbalance loading error correcting and weighing sensor and weighing method thereof |
| CN205426389U (en) * | 2015-11-30 | 2016-08-03 | 华南理工大学 | Force measuring device based on image recognition |
| CN106248268A (en) * | 2016-08-31 | 2016-12-21 | 西安中星测控有限公司 | A kind of strain gauge transducer and preparation method thereof |
-
2019
- 2019-08-08 CN CN201910728305.7A patent/CN110514329A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004018965A1 (en) * | 2002-08-20 | 2004-03-04 | Reginald Vachon | Compressed symbology strain gauge |
| CN1517594A (en) * | 2003-01-10 | 2004-08-04 | ���ǵ�����ʽ���� | Weight checking device for microwave oven |
| US20090326836A1 (en) * | 2006-08-17 | 2009-12-31 | Gregory L Hovis | Two dimensional bar code having increased accuracy |
| US20090225167A1 (en) * | 2008-03-10 | 2009-09-10 | Shimadzu Corporation | Gauge line position measuring device, program for measuring a gauge line position, and gauge line mark |
| CN201464019U (en) * | 2009-04-29 | 2010-05-12 | 北京清泰工贸有限责任公司 | Cushion damping resistance strain-gauge weighing transducer |
| CN101776473A (en) * | 2010-01-28 | 2010-07-14 | 昆明理工大学 | Differential strain type optical fiber Bragg raster-suspended belt scale |
| CN103376065A (en) * | 2012-04-26 | 2013-10-30 | 北京隆盛泰科石油管科技有限公司 | Classified bar code extensometer system and method for measuring whole stress-strain curve |
| CN104374453A (en) * | 2014-12-03 | 2015-02-25 | 烟台钧杰衡器有限公司 | Multichannel digitized intelligent unbalance loading error correcting and weighing sensor and weighing method thereof |
| CN205426389U (en) * | 2015-11-30 | 2016-08-03 | 华南理工大学 | Force measuring device based on image recognition |
| CN106248268A (en) * | 2016-08-31 | 2016-12-21 | 西安中星测控有限公司 | A kind of strain gauge transducer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 许德章: "《电阻应变片六维力传感器动态耦合特性研究》", 30 November 2015 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4571646B2 (en) | Method for calibration of a coordinate position determination device | |
| JP3523193B2 (en) | Strain gauge strip and its use | |
| JPH04232436A (en) | Automatic transducer selecting system for measuring pressure | |
| US4108719A (en) | Method and apparatus for gauging the radial spacing between fuel and surrounding cladding of a fuel rod for nuclear reactors | |
| Ferreira et al. | Integration of a silicon-based microprobe into a gear measuring instrument for accurate measurement of micro gears | |
| CN102506688A (en) | Resistance strain thickness measuring device and measurement method thereof | |
| US3645136A (en) | Fluid pressure measuring device | |
| US20110001396A1 (en) | Compact pressure-sensing device | |
| CN110514329A (en) | A kind of passive two-dimensional code load transducer and preparation method thereof | |
| CN107271475A (en) | A kind of method of metal material change in size critical condition under the conditions of determination cold cycling | |
| JP6685766B2 (en) | Pressure change measuring device, altitude measuring device, and pressure change measuring method | |
| Bruun | A note on static and dynamic calibration of constant-temperature hot-wire probes | |
| Wilson | Strain-gage instrumentation | |
| CN208537067U (en) | A kind of high rigidity two dimension force measuring sensors | |
| CN210321935U (en) | Single-point weighing system and weighing device | |
| CN110514330A (en) | A kind of passive two-dimensional code pressure sensor and preparation method thereof | |
| CN215338160U (en) | Device of detectable grout sleeve plumpness | |
| CN108827506A (en) | A kind of high rigidity two dimension force measuring sensors | |
| CN212205961U (en) | Resistance type surface strain sensor | |
| Schuler | Lateral-deformation gage for rock-mechanics testing: A compact, easily fabricated gage has been developed to measure lateral sample deformations during triaxial testing. In its optimum geometry, the gage has a large linear range | |
| JP3666622B2 (en) | Load detection device | |
| JP2671096B2 (en) | Micro indentation tester | |
| JP3510411B2 (en) | Micro hardness measurement method | |
| ICE-NPL-INRiM | Carlo Ferrero CNR-IMGC FORCE and LOAD CELLS | |
| CN114526860B (en) | Calibration method of simply supported beam type soil pressure sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191129 |
|
| RJ01 | Rejection of invention patent application after publication |