CN104597289A - Acceleration sensor tri-axis simultaneous testing correction and testing method - Google Patents
Acceleration sensor tri-axis simultaneous testing correction and testing method Download PDFInfo
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- CN104597289A CN104597289A CN201410797068.7A CN201410797068A CN104597289A CN 104597289 A CN104597289 A CN 104597289A CN 201410797068 A CN201410797068 A CN 201410797068A CN 104597289 A CN104597289 A CN 104597289A
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Abstract
The invention provides an acceleration sensor tri-axis simultaneous testing correction and testing method. The method comprises attaching the acceleration sensor to a fixing fixture, wherein the fixing fixture comprises three inclined planes, and the included angle between each inclined plane and the horizontal plane is 35.264 degree; enabling the X axis, the Y axis and the Z axis of the acceleration sensor to be parallel to the three inclined planes of the fixing fixtures, enabling the included angles between the X axis and the horizontal plane, between the Y axis and the horizontal plane and between the Z axis and the horizontal plane to be 35.264 degrees, and testing the acceleration sensor. By the aid of the method, the problems of complex structures, high testing costs and long testing time of current acceleration sensor correction testing equipment can be solved.
Description
Technical field
The present invention relates to acceleration transducer technical field of measurement and test, more specifically, relate to a kind of acceleration transducer three axis calibration method of testing.
Background technology
In most of electronic products (as: mobile phone, panel computer, IPAD etc.), be provided with the sensor of acceleration function, wherein, in acceleration transducer, be provided with X-axis, Y-axis and Z axis.In acceleration transducer production run, need to carry out detection calibration to it, ensure that properties of product meet designing requirement.
At present, the test of acceleration transducer or calibration steps are: test separately each axle of acceleration transducer or calibrate, namely when the main shaft (X, Y, Z ,-X ,-Y ,-Z) of required detection calibration carries out testing or calibrating with during horizontal plane.The method spended time tested separately each axle is longer, and tool structure is complicated, if will realize six axle test or calibrations, then needs upset six times.
That is, existing correcting mode, utilize six axle automated test devices to carry out detection calibration to acceleration transducer mostly, rotated by equipment and realize six axle detection calibrations for six times, testing apparatus complex structure, equipment cost is high, and data line material is easily wound around and loses in test process, cause difficult wiring, the test duration is longer.
Summary of the invention
In view of the above problems, the object of this invention is to provide calibration that a kind of acceleration transducer three axle tests simultaneously, method of testing, to solve the problem that existing calibration testing acceleration transducer device structure is complicated, cost is high and the test duration is long.
The invention provides calibration that a kind of speed pickup three axle tests simultaneously, method of testing, comprising: degree of will speed up sensor is fitted on fixed jig, wherein, fixed jig comprises three inclined-planes, and the angle of each inclined-plane and surface level is 35.264 degree;
Make the X-axis of acceleration transducer, Y-axis, Z axis parallel with fixed jig three inclined-planes respectively, and make the angle of the X-axis of acceleration transducer, Y-axis, Z axis three axle and surface level be all 35.264 degree;
Testing acceleration sensor.
In addition, preferred scheme is, in the process of testing acceleration sensor, the acceleration of gravity of the X-axis of testing acceleration sensor, Y-axis, Z axis, is respectively:
X＝X’/sinθ，Y＝Y’/sinθ，Z＝Z’/sinθ
Wherein, X is the acceleration of gravity of the X-axis of acceleration transducer;
The acceleration of gravity of the X-axis that X ' is acceleration transducer is at the vector project of vertical direction;
Y is the acceleration of gravity of the Y-axis of acceleration transducer;
The acceleration of gravity of the Y-axis that Y ' is acceleration transducer is at the vector project of vertical direction;
Z is the acceleration of gravity of the Z axis of acceleration transducer;
The acceleration of gravity of the Z axis that Z ' is acceleration transducer is at the vector project of vertical direction;
The acceleration of gravity in the vertical direction vector project of X-axis, Y-axis, Z axis three axle is identical;
θ is the angle 35.264 degree of the X-axis of acceleration transducer, Y-axis, Z axis and surface level.
In addition, preferred scheme is, according to the acceleration of gravity of the X-axis of acceleration transducer, Y-axis and Z axis, obtains the acceleration of gravity of acceleration transducer;
According to acceleration of gravity and the normal acceleration of gravity of obtained acceleration transducer, determine whether acceleration transducer is specification product.
In addition, preferred scheme is, according to acceleration of gravity and the normal acceleration of gravity of testing the acceleration transducer obtained, determines whether acceleration transducer is in the process of specification product,
If the value of the acceleration of gravity of the acceleration transducer that test obtains is in the scope of normal acceleration of gravity, then this acceleration transducer is specification product.
From technical scheme above, the calibration that acceleration transducer three axle of the present invention is tested simultaneously, method of testing, gravity is utilized to be vector sine, adopt fixed jig steady acceleration sensor, and three axles meeting acceleration transducer become 35.264 degree with surface level, calculate the acceleration of gravity of three axles of acceleration transducer, the acceleration of gravity of further acquisition acceleration transducer, this method of testing equipment is simple, with low cost, do not need repeatedly to overturn testing tool in test process, only need to revolve turnback, test duration is short.
In order to realize above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more aspect of the present invention comprises.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.But what these aspects indicated is only some modes that can use in the various modes of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and understand more comprehensively along with to of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 be test according to acceleration transducer three axle of the embodiment of the present invention simultaneously calibration, method of testing schematic flow sheet;
Fig. 2 is the speed pickup three axle decomposition texture schematic diagram according to the embodiment of the present invention;
Fig. 3-1 and Fig. 3-2 is respectively the view of the fixed jig steady acceleration sensor according to the embodiment of the present invention;
Fig. 4 is the test detailed process schematic diagram simultaneously tested according to acceleration transducer three axle of the embodiment of the present invention.
Reference numeral wherein comprises: fixed jig 1, acceleration transducer 2.
Label identical in all of the figs indicates similar or corresponding feature or function.
Embodiment
In the following description, for purposes of illustration, in order to provide the complete understanding to one or more embodiment, many details have been set forth.But, clearly, also these embodiments can be realized when there is no these details.
The device structure adopted for the method for the existing sense acceleration sensor of aforementioned proposition is complicated, cost is high, and the problem that test process is loaded down with trivial details, the test duration is longer, the present invention utilizes gravity to be vector sine, the acceleration of three axles is calculated by three axle vertical components of acceleration transducer, further to acceleration transducer detection calibration, this method of testing makes testing apparatus simplification, with low costization, upset is not needed to overturn 6 times to testing tool, only need to revolve turnback and once just can complete test, reduce the test duration.
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
In order to calibration that acceleration transducer three axle provided by the invention tests, method of testing are described simultaneously, Fig. 1 shows acceleration transducer three axle three axle detection calibration, the method for testing flow process simultaneously according to the embodiment of the present invention.
As shown in Figure 1, acceleration transducer three axle provided by the invention is tested simultaneously calibration, method of testing comprise:
S110: degree of will speed up sensor is fitted on fixed jig, wherein, fixed jig comprises three inclined-planes, and the angle of each inclined-plane and surface level is 35.264 degree;
S120: make the X-axis of acceleration transducer, Y-axis, Z axis parallel with fixed jig three inclined-planes respectively, make the angle of the X-axis of acceleration transducer, Y-axis, Z axis three axle and surface level be all 35.264 degree;
S130: testing acceleration sensor.
Wherein, it should be noted that, fixed jig test at acceleration transducer three axle simultaneously calibration, have two effects in method of testing, one: fixing testee, namely fix acceleration transducer, make acceleration transducer be in steady state (SS) in test process, thus obtain comparatively accurate calibration testing result.As long as degree of will speed up sensor is fitted on fixed jig, the object of steady acceleration sensor just can be reached; Acceleration transducer is fitted in fixed jig in suitable angle, needs to fit completely to be fitted on tool completely by testee by pressure cylinder, thus makes testee be in steady state (SS).
Its two: in detection calibration process, fixed jig demand fulfillment X/Y/Z with calibration object to be tested or-X/-Y/-Z three axle is identical with horizontal plane angle is all about 35.264 degree.Fixed jig, in order to ensure to meet test and the X/Y/Z of calibration object or-X/-Y/-Z three axle is identical with horizontal plane angle is all about 35.264 degree, has done following design.
Fixed jig comprises three inclined-planes, and the angle of each inclined-plane and surface level is 35.264 degree.When carrying out detection calibration to acceleration transducer, find suitable angle that acceleration transducer and fixed jig are fit together, and make the X-axis on acceleration transducer, Y-axis, Z axis is parallel with the inclined-plane of on fixed jig respectively, because the angle of each inclined-plane and surface level is 35.264 degree, X-axis so on acceleration transducer, Y-axis, the angle of Z axis and surface level is also 35.264 degree, therefore this design of fixed jig just meets test and the X/Y/Z of calibration object or-X/-Y/-Z three axle is identical with horizontal plane angle is all about 35.264 degree.
Fig. 2 shows the speed pickup three axle decomposition texture according to the embodiment of the present invention, as shown in Figure 2, speed pickup three axle (X-axis, Y-axis, Z axis) simultaneously in detection calibration process, first acceleration transducer three axle (X-axis will be ensured, Y-axis, Z axis) three axle in the vertical direction vector project are identical, and also to ensure acceleration transducer three axle (X-axis, Y-axis, Z axis) identical with the angle of surface level, wherein, in the embodiment shown in Figure 2, acceleration transducer three axle (X-axis can be obtained according to sine, Y-axis, Z axis) with the angle of surface level be: 1=2=3==35.264 degree.
It should be noted that, the profile of fixed jig will be processed according to the size of normal tested product (that is: acceleration transducer), the position that the installation of such fixed jig just can be placed according to tested acceleration transducer is placed, to reach fixed jig and acceleration transducer is fitted completely, play the effect of steady acceleration sensor.
Fig. 3-1 and Fig. 3-2 respectively illustrates the state of the fixed jig steady acceleration sensor according to the embodiment of the present invention.As shown in figure 3-1, acceleration transducer and fixed jig fit together, and the X-axis of acceleration transducer, Y-axis are identical with horizontal plane angle with Z axis, in the embodiment shown in Fig. 3-1, one of them inclined-plane of fixed jig and surface level angulation, this inclined-plane is parallel with the Y-axis of acceleration transducer, so the Y-axis of acceleration transducer also with surface level angulation.In addition, another two inclined-planes of fixed jig also with surface level angulation, these two inclined-planes are parallel with Z axis with the X-axis of acceleration transducer respectively, so the X-axis of acceleration transducer and Z axis and surface level also angulation.
Fig. 3-2 is the state that Fig. 3-1 revolves fixed jig steady acceleration sensor after turnback, fixed jig upside down, and-the X/-Y/-Z of acceleration transducer is identical with horizontal plane angle; Embodiment as shown in figure 3-2, one of them inclined-plane of fixed jig and surface level angulation, this inclined-plane and acceleration transducer-Y-axis is parallel, so acceleration transducer-Y-axis also with surface level angulation.In addition, another two inclined-planes of fixed jig also with surface level angulation, these two inclined-planes respectively with acceleration transducer-X-axis with-Z axis is parallel, so acceleration transducer-X-axis and-Z axis and surface level also angulation.
When fixed jig steady acceleration sensor, first and meet the X-axis of acceleration transducer, Y-axis becomes 35.264 degree with Z axis with horizontal plane angle, then can carry out detection calibration to acceleration transducer.
Fig. 4 shows the test detailed process of simultaneously testing according to acceleration transducer three axle of the embodiment of the present invention, and as shown in Figure 4, the detection calibration process of acceleration transducer is as follows:
S410: according to the X-axis of acceleration transducer, Y-axis and the Z axis acceleration of gravity at surface level, X-axis, the Y-axis of acceleration transducer become 35.264 degree with Z axis with horizontal plane angle, and sine, obtain the acceleration of gravity of the X-axis of acceleration transducer to be tested, Y-axis and Z axis;
S420: according to the acceleration of gravity of the X-axis of acceleration transducer obtained, Y-axis and Z axis, obtains the acceleration of gravity of acceleration transducer;
S430: according to acceleration of gravity and the normal acceleration of gravity of the acceleration transducer of test acquisition, determine whether acceleration transducer is specification product.
In acceleration of gravity and the normal acceleration of gravity of the acceleration transducer obtained according to test, determine whether acceleration transducer is in the process of specification product, if the value of the acceleration of gravity of the acceleration transducer that test obtains is in the scope of the acceleration of gravity of standard, then this acceleration transducer is specification product.
That is, in the detailed process of above-mentioned test, because acceleration transducer to be tested is connected with its testing apparatus, when fixed jig has stablized acceleration transducer to be tested, and after making three axles of acceleration transducer become 35.264 degree with surface level, testing apparatus starts testing acceleration sensor, in testing apparatus, first demonstrate the X-axis of acceleration transducer, Y-axis and the Z axis acceleration of gravity at surface level; Then according to the X-axis of acceleration transducer to be tested, Y-axis and the Z axis component at the acceleration of gravity of surface level, X-axis, the Y-axis of acceleration transducer to be tested become 35.264 degree with Z axis with horizontal plane angle, and sine, thus obtain the acceleration of gravity of the X-axis of acceleration transducer to be tested, Y-axis and Z axis.
In the process of the acceleration of gravity of testing acceleration sensor, the acceleration of gravity of the X-axis of acceleration transducer, Y-axis, Z axis, is respectively:
X＝X’/sinθ，Y＝Y’/sinθ，Z＝Z’/sinθ
Wherein, X is the acceleration of gravity of the X-axis of acceleration transducer;
The acceleration of gravity of the X-axis that X ' is acceleration transducer is at the vector project of vertical direction; It is the known quantity shown in testing apparatus;
Y is the acceleration of gravity of the Y-axis of acceleration transducer;
The acceleration of gravity of the Y-axis that Y ' is acceleration transducer, at the vector project of vertical direction, is the known quantity in testing apparatus display; Z is the acceleration of gravity of the Z axis of acceleration transducer;
The acceleration of gravity of the Z axis that Z ' is acceleration transducer, at the vector project of vertical direction, is the known quantity in testing apparatus display;
θ is the angle 35.264 degree of the X-axis of acceleration transducer, Y-axis, Z axis and surface level.
In the present invention, gravity is utilized to be vector, and calibrate three axles are simultaneously identical with the angle of surface level, namely identical at vertical direction component, when calibration testing, read acceleration transducer three axle at vertical direction component data, the conversion through above-mentioned formula draws the actual acceleration transducer value that will test or calibrate.
That is, the acceleration of gravity of this acceleration transducer is obtained according to the acceleration of gravity of the X-axis of acceleration transducer to be tested obtained, Y-axis and Z axis.
The acceleration of gravity of acceleration transducer obtained according to test and the acceleration of gravity of standard compare, if the value of the acceleration of gravity of the acceleration transducer that test obtains is in the scope of the acceleration of gravity of standard, then the acceleration transducer of this test is specification product, and properties of product are good; If the value of the acceleration of gravity of the acceleration transducer that test obtains is not in the scope of the acceleration of gravity of standard, then the acceleration transducer of this test is not specification product, can not be used in other products.
Can be found out by above-mentioned embodiment, acceleration transducer three axle provided by the invention test simultaneously calibration, method of testing, by fixed jig steady acceleration sensor, three axles of acceleration transducer are made to become 35.264 degree with surface level, do not need to be rotated by equipment to realize six axle tests for six times, adopt method of the present invention to test three axles simultaneously, fixed jig is only needed to revolve turnback, test other three axles more simultaneously, method provided by the invention can either reduce the cost of the testing apparatus of acceleration transducer, also reduces the test duration.
The acceleration transducer three axis calibration method of testing proposed according to the present invention is described in an illustrative manner above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that the acceleration transducer three axis calibration method of testing that the invention described above is proposed, various improvement can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (4)
1. acceleration transducer three axle test simultaneously calibration, a method of testing, comprising:
Degree of will speed up sensor is fitted on fixed jig, and wherein, described fixed jig comprises three inclined-planes, and the angle of each inclined-plane and surface level is 35.264 degree;
Make the X-axis of described acceleration transducer, Y-axis, Z axis parallel with three inclined-planes of described fixed jig respectively, and make the angle of the X-axis of described acceleration transducer, Y-axis, Z axis three axle and surface level be all 35.264 degree;
Test described acceleration transducer.
2. acceleration transducer three axle as claimed in claim 1 test simultaneously calibration, method of testing, wherein, in the process of the described acceleration transducer of test,
Test the acceleration of gravity of the X-axis of described acceleration transducer, Y-axis, Z axis, be respectively:
X＝X’/sinθ，Y＝Y’/sinθ，Z＝Z’/sinθ
Wherein, X is the acceleration of gravity of the X-axis of described acceleration transducer;
The acceleration of gravity that X ' is the X-axis of described acceleration transducer is at the vector project of vertical direction;
Y is the acceleration of gravity of the Y-axis of described acceleration transducer;
The acceleration of gravity that Y ' is the Y-axis of described acceleration transducer is at the vector project of vertical direction;
Z is the acceleration of gravity of the Z axis of described acceleration transducer;
The acceleration of gravity that Z ' is the Z axis of described acceleration transducer is at the vector project of vertical direction;
The acceleration of gravity in the vertical direction vector project of X-axis, Y-axis, Z axis three axle is identical;
θ is the angle 35.264 degree of the X-axis of described acceleration transducer, Y-axis, Z axis and surface level.
3. acceleration transducer three axle as claimed in claim 2 test simultaneously calibration, method of testing, after the acceleration of gravity of the X-axis of the described acceleration transducer of test, Y-axis, Z axis, also comprise:
According to the acceleration of gravity of the X-axis of described acceleration transducer, Y-axis and Z axis, obtain the acceleration of gravity of described acceleration transducer;
According to acceleration of gravity and the normal acceleration of gravity of obtained acceleration transducer, determine whether described acceleration transducer is specification product.
4. acceleration transducer three axle as claimed in claim 3 test simultaneously calibration, method of testing, wherein, according to acceleration of gravity and the normal acceleration of gravity of testing the acceleration transducer obtained, determine whether acceleration transducer is in the process of specification product
If the value of the acceleration of gravity of the acceleration transducer that test obtains is in the scope of normal acceleration of gravity, then this acceleration transducer is specification product.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106226558A (en) * | 2016-09-23 | 2016-12-14 | 中国地震局工程力学研究所 | A kind of method and device detecting force-balanced accelerometer polarity |
| CN107092038A (en) * | 2017-06-19 | 2017-08-25 | 华中科技大学 | A kind of MEMS gravimeters |
| CN107102171A (en) * | 2017-03-21 | 2017-08-29 | 苏州纳芯微电子股份有限公司 | Error diagnosis detection method for accelerometer |
| CN107422147A (en) * | 2017-07-17 | 2017-12-01 | 北方电子研究院安徽有限公司 | Three axle high-range acceleration transducer sensitivity test systems |
| CN108152535A (en) * | 2017-11-14 | 2018-06-12 | 歌尔科技有限公司 | A kind of accelerometer calibration method and device |
| CN108303568A (en) * | 2017-12-22 | 2018-07-20 | 歌尔股份有限公司 | A kind of test method of accelerometer |
| CN108548941A (en) * | 2018-04-23 | 2018-09-18 | 歌尔股份有限公司 | Rotary test device |
| CN108827363A (en) * | 2018-06-21 | 2018-11-16 | 闻泰通讯股份有限公司 | Sensor detector |
| CN113075423A (en) * | 2021-05-13 | 2021-07-06 | 珠海市精实测控技术有限公司 | Device for testing performance consistency of product built-in triaxial acceleration sensor |
| CN113075424A (en) * | 2021-05-13 | 2021-07-06 | 珠海市精实测控技术有限公司 | Method for testing performance consistency of product built-in triaxial acceleration sensor |
| CN113092818A (en) * | 2021-03-17 | 2021-07-09 | 歌尔股份有限公司 | Acceleration calibration method and device of wearable equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106226558A (en) * | 2016-09-23 | 2016-12-14 | 中国地震局工程力学研究所 | A kind of method and device detecting force-balanced accelerometer polarity |
| CN107102171B (en) * | 2017-03-21 | 2019-09-20 | 苏州纳芯微电子股份有限公司 | Error diagnosis detection method for accelerometer |
| CN107102171A (en) * | 2017-03-21 | 2017-08-29 | 苏州纳芯微电子股份有限公司 | Error diagnosis detection method for accelerometer |
| CN107092038A (en) * | 2017-06-19 | 2017-08-25 | 华中科技大学 | A kind of MEMS gravimeters |
| CN107422147A (en) * | 2017-07-17 | 2017-12-01 | 北方电子研究院安徽有限公司 | Three axle high-range acceleration transducer sensitivity test systems |
| CN108152535A (en) * | 2017-11-14 | 2018-06-12 | 歌尔科技有限公司 | A kind of accelerometer calibration method and device |
| CN108303568A (en) * | 2017-12-22 | 2018-07-20 | 歌尔股份有限公司 | A kind of test method of accelerometer |
| CN108303568B (en) * | 2017-12-22 | 2020-11-24 | 歌尔股份有限公司 | Test method of accelerometer |
| CN108548941A (en) * | 2018-04-23 | 2018-09-18 | 歌尔股份有限公司 | Rotary test device |
| CN108548941B (en) * | 2018-04-23 | 2020-08-25 | 歌尔股份有限公司 | Rotary testing device |
| CN108827363A (en) * | 2018-06-21 | 2018-11-16 | 闻泰通讯股份有限公司 | Sensor detector |
| CN113092818A (en) * | 2021-03-17 | 2021-07-09 | 歌尔股份有限公司 | Acceleration calibration method and device of wearable equipment |
| CN113075423A (en) * | 2021-05-13 | 2021-07-06 | 珠海市精实测控技术有限公司 | Device for testing performance consistency of product built-in triaxial acceleration sensor |
| CN113075424A (en) * | 2021-05-13 | 2021-07-06 | 珠海市精实测控技术有限公司 | Method for testing performance consistency of product built-in triaxial acceleration sensor |
| CN113075424B (en) * | 2021-05-13 | 2023-12-26 | 珠海精实测控技术股份有限公司 | Method for testing performance consistency of built-in triaxial acceleration sensor of product |
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