CN204241078U - Multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS - Google Patents
Multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS Download PDFInfo
- Publication number
- CN204241078U CN204241078U CN201420748041.4U CN201420748041U CN204241078U CN 204241078 U CN204241078 U CN 204241078U CN 201420748041 U CN201420748041 U CN 201420748041U CN 204241078 U CN204241078 U CN 204241078U
- Authority
- CN
- China
- Prior art keywords
- strain
- crossbeam
- fixed part
- load cells
- resistance
- 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.)
- Active
Links
Abstract
The utility model relates to a kind of multichannel digital uneven loading error intelligence and revises single beam type LOAD CELLS, belongs to sensor construction technical field.Comprise the elastic body be made up of aluminum alloy materials, the crossbeam of elastic body by centre and the left fixed part at two ends, right fixed part is formed, two fixed parts and crossbeam are structure as a whole, left fixed part and right fixed part are all formed with mounting hole, the upper surface of crossbeam offers the groove for placing wiring board close to right fixed part place, crossbeam upper, lower surface is respectively equipped with two groups of resistance-strain devices, often organize resistance-strain device to form by four strain ga(u)ges, four groups of resistance-strain devices are welded with wiring board mutually by wire, wiring board is connected with outernal display unit communication, crossbeam upper, the outside surface of lower two surfaces and groove is all coated with preservative treatment layer.The utility model trims whole, easy to process without the need to frustrating, and saving of work and time, measuring accuracy is high.
Description
Technical field
The utility model relates to a kind of multichannel digital uneven loading error intelligence and revises single beam type LOAD CELLS, belongs to sensor construction technical field.
Background technology
First, traditional single-point resistance strain weighing transducer has stronger offset load resistance in theory, but due to error, the deviation of patch location and the unevenness of strain ga(u)ge self material etc. reason that machining produces, everything all can cause single-point resistance strain weighing transducer to there is serious uneven loading error, must revise for this reason, can be applied in electronic scales.The method of current correction installs on test platform by LOAD CELLS, and the center of platform and four angles apply the load of 1/3 range successively, according to the size that it exports, frustrates repair different positions to revise with file.And when sensor installs on weighing platform, due to the difference of the rigidity of weighing platform, installed surface is different, the difference of assembling moment, also needs secondary refine.High-precision sensor is wasted time and energy very much, and is difficult to the requirement reaching secondary scale.And LOAD CELLS, after carrying out unbalance loading correction, destroys original preservative treatment layer, also needs to re-start protective treatment.And protection effect is difficult to reach previous level.
Moreover resistance strain weighing transducers all at present all exists certain weighting error, the reason of these errors is caused to have inside and outside.Wherein the impact of temperature is the most remarkable.It is by humid test that traditional temperature affects compensation of error, and the size exported according to temperature is welded the sensitivity amount of temperature compensation semifixed resistor of different resistance and intercepted that the enamel covered wire of different length compensates.The shortcoming done like this is the sensitivity amount of temperature compensation semifixed resistor that need prepare a large amount of different resistance, time-consuming, creates the temperature compensation of all analog or digital formulas for this reason, but static temperature compensates substantially;
Secondly, the accuracy of resistance strain weighing transducer is relevant with added load with the Cai Liao ﹑ temperature of sensor, and most of artifical resistance strain gauge load cell is compensated by discrete component in adjustment mimic channel, to reach tolerance requirements.Owing to being subject to the franchise of circuit component and limited range and compensating required work quantitative limitation, and higher accuracy cannot be reached.
Summary of the invention
The purpose of this utility model is to solve need that above-mentioned prior art exists and adopts and frustrate the mode of repairing and carry out weighing accuracy adjustment, waste time and energy, destroy the preservative treatment layer of LOAD CELLS outside, reduce protection effect, and temperature control compensating resistance need be used, temperature compensating resistance at zero point, offset output compensating resistance carries out temperature control, temperature zero point, the compensation of offset output, time-consuming, the technical matters that measuring accuracy is low, there is provided a kind of without the need to frustrate trim whole, easy to process, saving of work and time, measuring accuracy much higher passage digitizing uneven loading error intelligence revises single beam type LOAD CELLS.
Multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS, its special character is to comprise the elastic body 1 be made up of aluminum alloy materials, the crossbeam 2 of elastic body 1 by centre and the left fixed part 3 at two ends, right fixed part 4 is formed, two fixed parts and crossbeam 2 are structure as a whole, left fixed part 3 and right fixed part 4 are all formed with mounting hole 5, the upper surface of crossbeam 2 offers the groove 12 for placing wiring board 6 close to right fixed part 4 place, crossbeam 2 upper, lower surface is respectively equipped with two groups of resistance-strain devices, often organize resistance-strain device to form by four strain ga(u)ges, four groups of resistance-strain devices are welded with wiring board 6 mutually by wire, wiring board 6 is connected with outernal display unit 13 communication, crossbeam 2 upper, the outside surface of lower two surfaces and groove 12 is all coated with preservative treatment layer,
Described resistance-strain device is made up of four strain ga(u)ges 8 arranged in matts shape, and strain ga(u)ge 8 is connected by wire successively, forms Wheatstone bridge;
Described wiring board 6 is provided with single-chip microcomputer 9 and power circuit, single-chip microcomputer 9 is connected with temperature measuring circuit 15, the input end of single-chip microcomputer 9 is also connected with four A/D converters 10, input end and the resistance of A/D converter 10 answer device to be connected by wire, and A/D converter 10 and resistance are answered between device and is also provided with filtering circuit 11;
Described left fixed part 3 is connected with the scale pan, and right fixed part 4 is connected with base;
The width of described crossbeam 2 is 30 millimeters, and strain ga(u)ge 8 is affixed on crossbeam 2 upper surface or lower surface apart from neutral line 5.36mm place;
Described right fixed part 4 offer for the through hole 13 through wire;
Described wiring board 6 is connected with outernal display unit communication by cable;
The thickness of described crossbeam 2 is 2-3mm.
Multichannel digital uneven loading error intelligence of the present utility model revises single beam type LOAD CELLS, smart structural design, on crossbeam, lower surface is strain regions, strain regions is installed resistance-strain device, resistance-strain device is connected with single-chip computer control system communication, therefore when load is applied on elastic body, on elastomeric, lower four strain regions all produce the elasticity of flexure deformation proportional with magnitude of load, convert the change of the strain ga(u)ge resistance in four groups of resistance-strain devices to voltage signal by the Wheatstone bridge applying driving voltage to export, single-chip computer control system processes received multichannel measurement data, and carry out digitized compensation calculating according to the temperature information collected, outernal display unit is sent data to finally by TXD and RXD asynchronous communication interface, said process achieves following advantage: 1, a single-point type LOAD CELLS need not be frustrated and repair, one-time detection just can complete the digital intelligent correction to uneven loading error, and correction precision improves greatly, 2 grades of scales can be met easily to the requirement of uneven loading error, 2, the voltage signal by exporting Wheatstone bridge carries out digitized processing, without temperature control compensating resistance, temperature control linearization adjustment and compensation rate semifixed resistor, temperature compensating resistance at zero point, offset output compensating resistance, the compensation of temperature control, temperature zero point, offset output can be completed, and compensation precision improves an order of magnitude, 2 grades of scales easily can be met to the requirement of temperature error, 3, the voltage signal by exporting Wheatstone bridge carries out digitized processing, achieves linear, the creep exported resistance strain weighing transducer, delayed digitizing correction, improves the accuracy class of resistance strain weighing transducer, 4, the online firmware upgrade of sensor is adopted, for product up-gradation and fault diagnosis provide conveniently, 5, adopt instruction type communications protocol, reduce data communication frequency, greatly reduce the power consumption of sensor.In sum, the utility model reasonable in design, has good application prospect in weighing apparatus field.
Accompanying drawing explanation
Fig. 1: the multichannel digital uneven loading error intelligence of the utility model embodiment 1 revises the structural representation of single beam type LOAD CELLS;
The A of Fig. 2: Fig. 1 is to structural representation;
Fig. 3: the utility model multichannel digital uneven loading error intelligence revises elastomeric upper surface, the lower surface wiring schematic diagram of single beam type LOAD CELLS;
Fig. 4: the utility model is located at the wiring diagram of first group of resistance-strain device of crossbeam 2 upper surface, filtering circuit, A/D change-over circuit;
Fig. 5: the utility model is located at the wiring diagram of second group of resistance-strain device of crossbeam 2 upper surface, filtering circuit, A/D change-over circuit;
Fig. 6: the utility model is located at the wiring diagram of first group of strain device of crossbeam 2 lower surface, filtering circuit, A/D change-over circuit;
Fig. 7: the utility model is located at the wiring diagram of second group of strain device of crossbeam 2 lower surface, filtering circuit, A/D change-over circuit.
Fig. 8: the wiring diagram of the utility model single-chip microcomputer, display unit, temperature measuring circuit;
Fig. 9: the wiring diagram of the utility model power circuit.
Embodiment
Provide embodiment of the present utility model below with reference to accompanying drawing, be used for being described further the utility model.
Embodiment 1
The multichannel digital uneven loading error intelligence of the present embodiment revises single beam type LOAD CELLS, comprise the elastic body 1 be made up of aluminum alloy materials, the crossbeam 2 of elastic body 1 by centre and the left fixed part 3 at two ends, right fixed part 4 is formed, two fixed parts and crossbeam 2 are structure as a whole, left fixed part 3 and right fixed part 4 are all formed with mounting hole 5, the upper surface of crossbeam 2 offers the groove 12 for placing wiring board 6 close to right fixed part 4 place, crossbeam 2 upper, lower surface is respectively equipped with two groups of resistance-strain devices, often organize resistance-strain device to form by four strain ga(u)ges, four groups of resistance-strain devices are welded with wiring board 6 mutually by wire, wiring board 6 is connected with outernal display unit 13 communication, crossbeam 2 upper, the outside surface of lower two surfaces and groove 12 is all coated with preservative treatment layer, resistance-strain device be by four in matts shape arrange strain ga(u)ges 8 form, wherein strain ga(u)ge 8 can select model to be BCF350-3AA(23) strain ga(u)ge, strain ga(u)ge 8 is connected by wire successively, formed Wheatstone bridge, wiring board 6 is provided with single-chip microcomputer 9 and power circuit, single-chip microcomputer 9 is connected with temperature measuring circuit 15, the input end of single-chip microcomputer 9 is also connected with four A/D converters 10, input end and the resistance of A/D converter 10 answer device to be connected by wire, and A/D converter 10 and resistance are answered between device and is also provided with filtering circuit 11, left fixed part 3 is connected with the scale pan, and right fixed part 4 is connected with base, the width of crossbeam 2 is 30 millimeters, and strain ga(u)ge 8 is affixed on crossbeam 2 upper surface or lower surface apart from neutral line 5.36mm place, right fixed part 4 offer for the through hole 13 through wire, wiring board 6 is connected with outernal display unit communication by cable,
Wherein, the thickness of crossbeam 2 is determined according to the scope of weighing, such as weigh the article of less than 10 kilograms time, the thickness of crossbeam 2 can be designed to 2mm, when weigh the article of less than 20 kilograms time, the thickness of crossbeam 2 is 2.9mm.
Multichannel digital uneven loading error intelligence revises the Weighing method of single beam type LOAD CELLS, comprises the following steps:
1), by load be applied on elastic body 1, make upper and lower four strain regions of elastic body 1 all produce the elasticity of flexure deformation proportional with magnitude of load;
2), calculated by mechanical analysis, according to the rule of its geometric distortion, adopt 8 ~ 16 diverse location adhering resistance strainometers (as 30 mm wide elastic bodys, strain ga(u)ge 8 is attached to distance neutral line 5.36mm place, strain regions), constitute multiple Wheatstone bridge (S1, S2, ... ..SN), see accompanying drawing 8-9, power to S1 for bridge voltage VCC, bridge road exports the simulating signal of a 0 ~ 6mV under force;
3), the voltage signal of four groups of Wheatstone bridge outputs passes through C1, C2, U2 high precision analogue A/D converter 10 is given after C3 filter out noise, data are sent to single-chip microcomputer 9 by SDO and SCLC two interfaces, in like manner S2, S3 ... measurement data is also sent to single-chip microcomputer 9 by .SN, and elastomeric temperature signal is given U1 by the temperature measuring circuit be made up of RT temperature sensor and R8;
4) the multichannel measurement data, received by single-chip microcomputer 9 pairs of step 3) process, and carry out digitized compensation calculating according to the temperature information collected;
5), by TXD and RXD asynchronous communication interface set on single-chip microcomputer 9, data are sent to outernal display unit 13 by cable.
The key improving LOAD CELLS weighing precision reduces the impact of inside and outside factor.Reaching higher precision needs the process by being called compensation to carry out " adjustment " each LOAD CELLS.No matter the object compensated is temperature or load time, all obtain desirable linear relationship in the output of LOAD CELLS with suffered by it between load.Within the scope of specified carrying, when loading with known force, calculate the linear compensation factors along " expectation value " curve by the actual output quantity of sensor, thus reach desired result.The penalty coefficient used in digital compensation algorithm calculates by the actual output quantity of sensor.Digital compensation is under actual loaded condition, corrects realize the output of LOAD CELLS.
lag compensation:
Most of sensor can show and be referred to as delayed attribute.When imposed load unloads load more successively step by step, the output of sensor there will be delayed or is sometimes called the phenomenon of " interior friction ".In ideal conditions, identical load should be identical with reading during corresponding loading when unloading.But in fact difference can occur, this species diversity is just referred to as delayed.Delayed normally positive number, but also have some negative delayed phenomenons to occur.Can be quite large by the impact of delayed generation in resistance strain type sensor, the often overall accuracy of limiting device.The generation of hysteresis phenomenon mainly comes from material behavior and the geometric configuration of sensor.All materials with reacting force, no matter it is delayed to be that metal or glass/ceramic all show in various degree.The strain ga(u)ge of macromolecular material substrate also show delayed, and account for significant proportion in the overall hysteresis error of sensor.Lag compensation algorithm makes the output of LOAD CELLS closer to desirable straight line.The lag compensation coefficient used in digital compensation algorithm applies known force, by what calculate a series of gravimetric values of the actual output of sensor to sensor within the scope of specified carrying.This algorithm revises the output of LOAD CELLS according to actual loaded amount, and considers whether current heap(ed) capacity is greater than or less than previous heap(ed) capacity.When compression and decompression be complete in same step time, delayed makeover process can be quite simple.
sensitivity temperature compensation:
Temperature is the most significant external influence factors.The critical piece (elastic body and strain ga(u)ge) of LOAD CELLS is all manufactured by metal material.Along with the change of temperature, the change that the signal of LOAD CELLS can be caused to export of expanding with heat and contract with cold of metal.Under controlled conditions, temperature impact can measured out.Be constant due to temperature effect and repeatably, therefore can compensate.Obtain temperature compensation coefficient, need in whole temperature range build-in test LOAD CELLS and record data, adjusting the dependent deviation produced by temperature, to obtain expected result.Penalty coefficient is stored in the permanent storage of LOAD CELLS.
zero temperature compensation:
Offset output is that the sensor surveyed under zero load exports.The temperature compensation of offset output is realized by certain algorithm, and this algorithm makes sensor produce identical offset output at different temperatures.Zero compensation exports reading by the zero load surveyed in whole operating temperature range to determine.These readings of the penalty coefficient used in digital compensation algorithm calculate.This algorithm is the actual temperature according to LOAD CELLS, corrects its output.
creep compensation:
Creep be sensor when stand under load is constant, its change (increase or reduce) exporting in time and occur.Under loaded condition, along with the hardware of the continuity LOAD CELLS of time can produce lasting distortion.This lasting distortion can cause additional strain in sensor.Under controlled conditions, after loading, the impact of time can be out measured in this distortion.Because this impact is constant and repeatably, therefore can compensate.Creep compensation coefficient is within given time, LOAD CELLS is applied to identical power determines.The creep compensation coefficient used in digital compensation algorithm is by calculating these weight readings.This algorithm is according to actual loaded amount, and the time of loading revises the output of LOAD CELLS.
the correction of uneven loading error:
The diverse location that the error produced due to machining, the deviation of patch location and the reason of strain ga(u)ge self can cause load to be added to weighing platform is that sensor exports and produces error.This error is applied identical load successively by the position different to weighing platform and is recorded the output of each electric bridge of diverse location, by carrying out computing to the output data of different electric bridge, realize on a single-point type sensor without the correction of physical method to uneven loading error.The correction of this employing digitizing uneven loading error is one step completed after electronic scales assembling, thus saves a large amount of manpowers, and greatly improves production efficiency; Especially to using the elastic body of slice structure to greatly reduce elastomeric difficulty of processing, greatly reduce manufacturing cost.
The multichannel digital uneven loading error intelligence of above-described embodiment is revised single beam type LOAD CELLS and is had the following advantages:
1, achieve need not to frustrate in a single-point type LOAD CELLS and repair, one-time detection just can complete the digital intelligent correction to uneven loading error, and revises precision and greatly improve, and can meet 2 grades of scales easily to the requirement of uneven loading error.
2, the voltage signal by exporting Wheatstone bridge carries out digitized processing, without temperature control compensating resistance, temperature control linearization adjustment and compensation rate semifixed resistor, temperature compensating resistance at zero point, offset output compensating resistance, the compensation of temperature control, temperature zero point, offset output can be completed, and compensation precision improves an order of magnitude, 2 grades of scales easily can be met to the requirement of temperature error.
3, the voltage signal by exporting Wheatstone bridge carries out digitized processing, achieves linear, the creep exported resistance strain weighing transducer, delayed digitizing correction, improves the accuracy class of resistance strain weighing transducer.
4, the online firmware upgrade of sensor is adopted, for product up-gradation and fault diagnosis provide conveniently.
5, adopt instruction type communications protocol, reduce data communication frequency, greatly reduce the power consumption of sensor.
Claims (8)
1. multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS, it is characterized in that comprising the elastic body (1) be made up of aluminum alloy materials, the crossbeam (2) of elastic body (1) by centre and the left fixed part (3) at two ends, right fixed part (4) is formed, two fixed parts and crossbeam (2) are structure as a whole, left fixed part (3) and right fixed part (4) are all formed with mounting hole (5), the upper surface of crossbeam (2) offers the groove (12) for placing wiring board (6) close to right fixed part (4) place, crossbeam (2) upper, lower surface is respectively equipped with two groups of resistance-strain devices, often organize resistance-strain device to form by four strain ga(u)ges, four groups of resistance-strain devices are welded with wiring board (6) mutually by wire, wiring board (6) is connected with outernal display unit (13) communication, crossbeam (2) upper, the outside surface of lower two surfaces and groove (12) is all coated with preservative treatment layer.
2. revise single beam type LOAD CELLS according to multichannel digital uneven loading error intelligence according to claim 1, it is characterized in that described resistance-strain device is made up of four strain ga(u)ges (8) arranged in matts shape, strain ga(u)ge (8) is connected by wire successively, forms Wheatstone bridge.
3. revise single beam type LOAD CELLS according to the multichannel digital uneven loading error intelligence described in claim 1 or 2, it is characterized in that described wiring board (6) is provided with single-chip microcomputer (9) and power circuit, single-chip microcomputer (9) is connected with temperature measuring circuit (15), the input end of single-chip microcomputer (9) is also connected with four A/D converters (10), the input end of A/D converter (10) answers device to be connected by wire with resistance, and A/D converter (10) and resistance are answered between device and is also provided with filtering circuit (11).
4. revise single beam type LOAD CELLS according to multichannel digital uneven loading error intelligence according to claim 3, it is characterized in that described left fixed part (3) is connected with the scale pan, right fixed part (4) is connected with base.
5. revise single beam type LOAD CELLS according to multichannel digital uneven loading error intelligence according to claim 3, it is characterized in that the width of described crossbeam (2) is 30 millimeters, strain ga(u)ge (8) is affixed on crossbeam (2) upper surface or lower surface apart from neutral line 5.36mm place.
6. revise single beam type LOAD CELLS according to the multichannel digital uneven loading error intelligence described in claim 1 or 5, it is characterized in that described right fixed part (4) offering the through hole (13) for through wire.
7. revise single beam type LOAD CELLS according to multichannel digital uneven loading error intelligence according to claim 3, it is characterized in that described wiring board (6) is connected with outernal display unit communication by cable.
8. revise single beam type LOAD CELLS according to multichannel digital uneven loading error intelligence according to claim 3, it is characterized in that the thickness of described crossbeam (2) is 2-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420748041.4U CN204241078U (en) | 2014-12-03 | 2014-12-03 | Multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420748041.4U CN204241078U (en) | 2014-12-03 | 2014-12-03 | Multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241078U true CN204241078U (en) | 2015-04-01 |
Family
ID=52770560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420748041.4U Active CN204241078U (en) | 2014-12-03 | 2014-12-03 | Multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241078U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534873A (en) * | 2017-03-02 | 2018-09-14 | 碧彩股份两合公司 | Load sensor for scale |
| CN108955854A (en) * | 2018-07-19 | 2018-12-07 | 刘思颂 | A kind of balance Weighing apparatus and calibration method |
| CN114935390A (en) * | 2022-05-17 | 2022-08-23 | 常州纺织服装职业技术学院 | Weighing force-measuring sensor for unbalance loading error compensation |
-
2014
- 2014-12-03 CN CN201420748041.4U patent/CN204241078U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534873A (en) * | 2017-03-02 | 2018-09-14 | 碧彩股份两合公司 | Load sensor for scale |
| US10837820B2 (en) | 2017-03-02 | 2020-11-17 | Bizerba SE & Co. KG | Load cell for a scale |
| CN108534873B (en) * | 2017-03-02 | 2021-07-16 | 碧彩股份两合公司 | Load cell for a weighing scale |
| CN108955854A (en) * | 2018-07-19 | 2018-12-07 | 刘思颂 | A kind of balance Weighing apparatus and calibration method |
| CN114935390A (en) * | 2022-05-17 | 2022-08-23 | 常州纺织服装职业技术学院 | Weighing force-measuring sensor for unbalance loading error compensation |
| CN114935390B (en) * | 2022-05-17 | 2023-08-08 | 常州纺织服装职业技术学院 | Weighing force transducer for offset load error compensation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104374453A (en) | Multichannel digitized intelligent unbalance loading error correcting and weighing sensor and weighing method thereof | |
| CN204202717U (en) | Multichannel digital uneven loading error intelligence revises porous many beam types LOAD CELLS | |
| CN106500902B (en) | A kind of strain-type multidimensional force sensor with from decoupling function | |
| CN101089574A (en) | Error correcting method for pressure sensor | |
| CN101858811A (en) | Method for compensating signal of high-precision pressure sensor | |
| CN109000879B (en) | Wind tunnel balance temperature drift correction method | |
| CN102506983A (en) | Weighing error automatic compensation method of vehicle scale | |
| CN204241078U (en) | Multichannel digital uneven loading error intelligence revises single beam type LOAD CELLS | |
| CN100483093C (en) | In-circuit programmable automatic temperature compensation silicon piezoresistive transducer | |
| CN105823539A (en) | Multi-weighing-platform combination type multi-range motor truck scale and working method thereof | |
| CN102052991A (en) | Method for setting temperature compensation factor of pressure sensor | |
| CN107271081A (en) | Silicon piezoresistance type pressure transmitter temperature compensation and device based on two benches least square fitting | |
| CN108981983A (en) | Tire-road three-dimensional force measuring sensors | |
| US7194922B2 (en) | Modular force-measuring cell for a weighing scale, and weighing scale | |
| CN106382977A (en) | Temperature compensating method for improving truck scale accuracy | |
| CN102788659A (en) | Temperature compensation parameter self operation method of digital pressure gauge | |
| CN115290293A (en) | Strain balance development method for reducing zero point temperature effect of axial force measuring element | |
| CN108801407A (en) | Weighing device, weighing method, weighing sensor and storage medium | |
| CN113984252A (en) | Digital fitting temperature compensation system of resistance-type differential pressure transmitter | |
| CN113503813A (en) | Six-degree-of-freedom motion platform linear displacement positioning precision measurement and error compensation method | |
| CN1399122A (en) | Tecomperature compensation method for strain-type weighing sensor | |
| CN102168994A (en) | Silicon capacitive differential pressure transducer with multi-parameter and compensation method of static pressure influence | |
| CN106895929B (en) | Improve the temperature pressure compensation method of embedded pressure sensor output accuracy | |
| CN106679777A (en) | Electronic scale temperature compensation device and compensation method thereof | |
| CN116296047A (en) | Temperature compensation improvement method of monocrystalline silicon pressure transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |