CN109932125A - A kind of pressure sensor calibrating method based on pressure versus time variation relation - Google Patents
A kind of pressure sensor calibrating method based on pressure versus time variation relation Download PDFInfo
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- CN109932125A CN109932125A CN201711347831.6A CN201711347831A CN109932125A CN 109932125 A CN109932125 A CN 109932125A CN 201711347831 A CN201711347831 A CN 201711347831A CN 109932125 A CN109932125 A CN 109932125A
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Abstract
The invention belongs to transducer calibration technical fields, and in particular to a kind of pressure sensor calibrating method based on pressure versus time variation relation.The pressure Value Data that the preset on-load pressure target component of method comparison computer operation bench of the invention and pressure sensor obtain, the observed pressure value and the conditional curve of load time obtained in conjunction with preset on-load pressure targeted parameter value, pressure sensor, the pressure value otherness caused by load time delay and different pressures difference is obtained, and then obtains calibration curve of the pressure sensor in steady pressure loading procedure.The present invention can be realized the accurate calibration to pressure sensor, and then realize the Accurate Determining to test sample pressure change parameter, achieve the purpose that measure actual pressure.
Description
Technical field
The invention belongs to transducer calibration technical fields, and in particular to a kind of pressure based on pressure versus time variation relation
Transducer calibration method.
Background technique
The resistance to compression force parameter of test sample is one of basic mechanical characteristic of test sample.It is directed to sample to be tested
The accurate test job of pressure parameter, it is necessary first to which pressure sensor used in test process is accurately demarcated.
Pressure sensor based on pressure versus time variation relation is good with parameter consistency, measurement accuracy high and low frequency is special
Property it is good, signal processing is simple, convenient and miniaturization the features such as, the pressure changing especially suitable for test sample.
For sensor user, the spy of sensor can be grasped using suitable calibration facility and scaling method
Property, more accurately judge the data with analyte sensors acquisition.Therefore, how to realize that test sample resists the biography of on-load pressure
The accurate calibration of sensor works, and is a problem to be solved.
Summary of the invention
The technical problem to be solved in the invention are as follows: a kind of scaling method based on pressure versus time variation relation is provided, it is real
Now to the accurate calibration of pressure sensor.
It is described that technical scheme is as follows:
A kind of pressure sensor calibrating method based on pressure versus time variation relation is filled based on pressure sensor calibrating
Realization is set, the pressure sensor calibrating device includes weighted platform, load plate and LOADED CAVITY, and load plate is placed on weighted platform
At square certain altitude, the LOADED CAVITY that can be moved in the vertical direction is installed below load plate.Based on pressure versus time variation relation
Pressure sensor calibrating method, comprising the following steps:
Step 1
Test sample is placed on weighted platform, pressure sensor is placed in inside LOADED CAVITY, and LOADED CAVITY moves down
It is in contact, that is, is loaded onto test sample with test sample；
Step 2
By computer operation bench, pre-set on-load pressure target component is obtained；Then implement load, certain
In load time, by pressure sensor, the pressure Value Data that LOADED CAVITY applies is obtained；
Step 3
Compare the pressure value number of the preset on-load pressure target component of computer operation bench and pressure sensor acquisition
According in conjunction with preset on-load pressure targeted parameter value, the observed pressure value of pressure sensor acquisition and load time
Conditional curve obtains the pressure value otherness caused by load time delay and different pressures difference, and then obtains the pressure
Calibration curve of the sensor in steady pressure loading procedure.
As a preferred solution: the pressure difference is the pre-set on-load pressure target value of computer operation bench in step 3
And the difference for the observed pressure value that pressure sensor obtains.
As a preferred solution: in step 2, using the pressure value number of pressure data collector acquisition pressure sensor acquisition
According to.
The invention has the benefit that
(1) a kind of pressure sensor calibrating method based on pressure versus time variation relation of the invention, can be realized to pressure
The accurate calibration of force snesor, and then realize to the Accurate Determining of test sample pressure change parameter, reach measurement actual pressure
Purpose；
(2) a kind of pressure sensor calibrating method based on pressure versus time variation relation of the invention, survey process is convenient,
Measurement result is reliable；
(3) a kind of pressure sensor calibrating method based on pressure versus time variation relation of the invention, particularly suitable for rock
The permeance property test of stone, coagulation great soil group quasi-brittle material.
Detailed description of the invention
Fig. 1 is pressure sensor calibrating apparatus structure schematic diagram.
In figure, 1- load plate, 2- weighted platform, 3- column, 4- LOADED CAVITY, 5- pressure sensor, 6- test sample.
Specific embodiment
With reference to the accompanying drawings and examples to a kind of pressure sensor 5 based on pressure versus time variation relation of the invention
Scaling method is described in detail.
Embodiment 1
The present embodiment is realized based on pressure sensor calibrating device shown in FIG. 1.The pressure sensor calibrating device packet
Include weighted platform 2, load plate 1 and LOADED CAVITY 4.Load plate 1 is placed at 2 top certain altitude of weighted platform, is pacified below load plate 1
Equipped with the LOADED CAVITY 4 that can be moved in the vertical direction.In the present embodiment, load plate 1 is set to by 3 supporting member of column to be added
At 2 top certain altitude of carrying platform.
The pressure sensor calibrating method based on pressure versus time variation relation in the present embodiment, comprising the following steps:
Step 1
Test sample 6 is placed on weighted platform 2, pressure sensor 5 is placed in inside LOADED CAVITY 4, and LOADED CAVITY 4 is downward
Movement is in contact with test sample 6, that is, is loaded onto test sample 6.
Step 2
By computer operation bench, pre-set on-load pressure target component is obtained.Then implement load, certain
In load time, by pressure sensor 5, the pressure Value Data that LOADED CAVITY 4 applies is obtained.
In the present embodiment, using the pressure Value Data of the pressure data collector acquisition acquisition of pressure sensor 5.
Step 3
Compare the pressure value number of the preset on-load pressure target component of computer operation bench and the acquisition of pressure sensor 5
According to the observed pressure value obtained in conjunction with preset on-load pressure targeted parameter value, pressure sensor 5 and load time
Conditional curve, obtain due to the load time postpone and poor (the pre-set load pressure of above-mentioned computer operation bench of different pressures
The difference for the observed pressure value that power target value and pressure sensor 5 obtain) caused by pressure value otherness, and then obtain the pressure
Calibration curve of the sensor 5 in steady pressure loading procedure.
Claims (3)
1. a kind of pressure sensor calibrating method based on pressure versus time variation relation is based on pressure sensor calibrating device
It realizes, the pressure sensor calibrating device includes weighted platform (2), load plate (1) and LOADED CAVITY (4), and load plate (1) is placed in
Above weighted platform (2) at certain altitude, the LOADED CAVITY (4) that can be moved in the vertical direction is installed below load plate (1)；Its
It is characterized in that: the following steps are included:
Step 1
Test sample (6) is placed on weighted platform (2), pressure sensor (5) is placed in LOADED CAVITY (4) inside, LOADED CAVITY
(4) it moves down and is in contact with test sample (6), that is, be loaded on test sample (6)；
Step 2
By computer operation bench, pre-set on-load pressure target component is obtained；Then implement load, in certain load
In time, by pressure sensor (5), the pressure Value Data that LOADED CAVITY (4) apply is obtained；
Step 3
Compare the pressure value number of the preset on-load pressure target component of computer operation bench and pressure sensor (5) acquisition
According to, in conjunction with preset on-load pressure targeted parameter value, pressure sensor (5) obtain observed pressure value and load when
Between conditional curve, obtain postponing the load time and different pressures difference caused by pressure value otherness, and then obtain this
Calibration curve of the pressure sensor (5) in steady pressure loading procedure.
2. a kind of pressure sensor calibrating method based on pressure versus time variation relation according to claim 1, feature
Be: in step 3, the pressure difference is the pre-set on-load pressure target value of computer operation bench and pressure sensor (5)
The difference of the observed pressure value of acquisition.
3. a kind of pressure sensor calibrating method based on pressure versus time variation relation according to claim 1 or 2,
It is characterized in that: in step 2, using the pressure Value Data of pressure data collector acquisition pressure sensor (5) acquisition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711347831.6A CN109932125A (en) | 2017-12-15 | 2017-12-15 | A kind of pressure sensor calibrating method based on pressure versus time variation relation |
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| CN201711347831.6A CN109932125A (en) | 2017-12-15 | 2017-12-15 | A kind of pressure sensor calibrating method based on pressure versus time variation relation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487010A (en) * | 2020-05-30 | 2020-08-04 | 山西斯米咖科技有限公司 | Pressure calibration method of bipolar guide rail pressure mechanism |
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| CN2323368Y (en) * | 1998-01-14 | 1999-06-09 | 中国建筑科学研究院建筑结构研究所 | Masonry mortar strength point load tester |
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| CN101793647A (en) * | 2010-02-04 | 2010-08-04 | 西北工业大学 | Method for testing circumferential mechanical performance of thin-wall pipe |
| CN102288363A (en) * | 2011-06-24 | 2011-12-21 | 常州市常欣电子衡器有限公司 | Device for calibrating force sensor of lifting capacity limiter |
| JP2015040776A (en) * | 2013-08-22 | 2015-03-02 | ニッタ株式会社 | Sensor sheet calibration device, and program used therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2249408Y (en) * | 1995-10-09 | 1997-03-12 | 机械工业部郑州磨料磨具磨削研究所 | Compression strength detector for brittle granular material |
| CN2323368Y (en) * | 1998-01-14 | 1999-06-09 | 中国建筑科学研究院建筑结构研究所 | Masonry mortar strength point load tester |
| CN200947073Y (en) * | 2006-08-31 | 2007-09-12 | 上海华龙测试仪器有限公司 | Full-automatic pellet pressure test machine |
| CN201172287Y (en) * | 2008-01-29 | 2008-12-31 | 洛阳市谱瑞慷达耐热测试设备有限公司 | Loading rate-controlling mechanism of compression testing machine |
| CN101793647A (en) * | 2010-02-04 | 2010-08-04 | 西北工业大学 | Method for testing circumferential mechanical performance of thin-wall pipe |
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| JP2015040776A (en) * | 2013-08-22 | 2015-03-02 | ニッタ株式会社 | Sensor sheet calibration device, and program used therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111487010A (en) * | 2020-05-30 | 2020-08-04 | 山西斯米咖科技有限公司 | Pressure calibration method of bipolar guide rail pressure mechanism |
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Application publication date: 20190625 |