CN110243462B - Vibration detection method for transportation vibration meter - Google Patents

Vibration detection method for transportation vibration meter Download PDF

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CN110243462B
CN110243462B CN201910583170.XA CN201910583170A CN110243462B CN 110243462 B CN110243462 B CN 110243462B CN 201910583170 A CN201910583170 A CN 201910583170A CN 110243462 B CN110243462 B CN 110243462B
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vibration
axis
acceleration sensor
acceleration
detection
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刘泽东
陈才顺
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Sichuan Liaowang Industrial Automation Control Technology Co ltd
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    • G01—MEASURING; TESTING
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Abstract

The invention discloses a vibration detection method of a transportation vibration meter, which can combine a three-axis acceleration sensor and a single-axis acceleration sensor and improve the detection precision. The vibration detection method of the transportation vibration meter adopts a three-axis vibration acceleration sensor to collect vibration information and adopts a single-axis vibration acceleration sensor to collect vibration information; further comprising the steps of: s1, detecting the acceleration a of X, Y and Z axis in three directions in the product transportation process in real time through a three-axis vibration acceleration sensorx、ay、az(ii) a Simultaneously, collecting vibration acceleration a through a single-axis vibration acceleration sensor; the time interval between two adjacent detections is delta t, and the delta t is more than 0.5 s; s2, calculating vibration rate, S3, calculating vibration displacement, S4 and calculating correction parameters; and S5, correcting the detected data of the shaft acceleration sensor through the correction parameters. By adopting the vibration detection method of the transportation vibration meter, the influence of sensing precision on detection precision can be reduced, and the detection precision is improved.

Description

Vibration detection method for transportation vibration meter
Technical Field
The invention relates to vibration detection in a transportation process, in particular to a vibration detection method for a transportation vibration meter.
Background
It is known that: transport vibration measuring instrument, alias transport vibration monitor, transport environment recorder, impact recorder, three-dimensional collision recorder, three-axis acceleration recorder, etc. The device is mainly used for monitoring the whole process of changes of vibration, impact, temperature and humidity and the like in the process of transporting precise goods and special requirements, so as to determine whether the goods are damaged in the transporting process, and provide scientific data for transportation so as to find the optimal transporting mode and find the cause of problems.
The existing transportation vibration monitor generally adopts a three-axis acceleration sensor or a single-axis acceleration sensor to realize the detection of vibration. A single sensor is adopted to detect the vibration, and the sensing precision of the sensor directly influences the detection precision pair; therefore, the existing detection method has low precision and can not judge the detection accuracy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a vibration detection method of a transportation vibration meter, which can combine a three-axis acceleration sensor and a single-axis acceleration sensor and improve the detection precision.
The technical scheme adopted by the invention for solving the technical problems is as follows: the vibration detection method of the transportation vibration meter comprises the steps of collecting vibration information by adopting a three-axis vibration acceleration sensor and collecting vibration information by adopting a single-axis vibration acceleration sensor; further comprising the steps of:
s1, detecting the acceleration a of X, Y and Z axis in three directions in the product transportation process in real time through a three-axis vibration acceleration sensorx、ay、az(ii) a Simultaneously, collecting vibration acceleration a through a single-axis vibration acceleration sensor; the time interval between two adjacent detections is delta t, and the delta t is more than 0.5 s;
s2, obtained by detection
Figure BDA0002113648770000011
X, Y and vibration speeds V in three directions of the Z axis are obtainedxn、Vyn、Vzn(ii) a A obtained by detectionnObtaining a single-axis vibration velocity Vn；
Figure BDA0002113648770000012
Figure BDA0002113648770000021
Figure BDA0002113648770000022
Figure BDA0002113648770000023
Figure BDA0002113648770000024
An acceleration sampling value in the X-axis direction at the moment i;
Figure BDA0002113648770000025
acceleration in the Y-axis direction at time iMeasuring a sampling value;
Figure BDA0002113648770000026
an acceleration sampling value in the Z-axis direction at the moment i; a isiThe acceleration sampling value of the uniaxial vibration acceleration sensor at the time i;
Figure BDA0002113648770000027
a00; n is the total number of sampling times;
s3, passing the V obtained in the step S2xn、Vyn、VznAnd VnObtaining vibration displacement;
Figure BDA0002113648770000028
Figure BDA0002113648770000029
Figure BDA00021136487700000210
Figure BDA00021136487700000211
Figure BDA00021136487700000212
the value of the vibration speed in the X-axis direction at the moment i is obtained;
Figure BDA00021136487700000213
the value of the vibration speed in the Y-axis direction at the moment i is obtained;
Figure BDA00021136487700000214
the value of the vibration speed in the Z-axis direction at the moment i is obtained; v. ofiThe vibration speed value of the uniaxial vibration acceleration sensor at the time i;
Figure BDA00021136487700000215
V00; n is the total number of sampling times;
s4, passing the V obtained in the step S2xn、Vyn、VznAnd VnAnd S obtained in step S3xn、Syn、SznAnd Sn(ii) a Will Vxn、Vyn、VznVector synthesis is carried out to obtain VAnd n isWill Sxn、Syn、SznVector synthesis is carried out to obtain SAnd n is，
Through VAnd n isAnd VnCalculating a rate error correction parameter kv(ii) a By SAnd n isAnd SnCalculating a displacement error correction parameter ks；
Figure BDA0002113648770000031
Figure BDA0002113648770000032
Figure BDA0002113648770000033
Figure BDA0002113648770000034
kviCorrecting parameters for rate errors in the i detections; k is a radical ofsiCorrecting parameters for displacement errors in the detection of i times;
s5, correcting the vibration information acquired by the single-axis vibration acceleration sensor through correction parameters to obtain final vibration detection data;
Figure BDA0002113648770000035
Figure BDA0002113648770000036
wherein v isiThe vibration speed value of the uniaxial vibration acceleration sensor at the time i; a isiThe acceleration sampling value of the uniaxial vibration acceleration sensor at the time i; k is a radical ofviCorrecting parameters for rate errors in the i detections; k is a radical ofsiAnd correcting the parameters for the displacement errors in the detection of i times.
Specifically, the time interval Δ t in step S1 is 2S.
The invention has the beneficial effects that: according to the vibration detection method of the transportation vibration meter, the three-axis acceleration sensor can detect X, Y, Z vibration acceleration in three directions, then X, Y, Z three vibration accelerations in three directions are used for obtaining X, Y, Z vibration speeds and vibration displacements in three directions, and the three vibration accelerations are synthesized to obtain a synthesis rate and a synthesis displacement; and finally, correcting the vibration rate and the displacement detected by the single-axis acceleration sensor through the correction coefficient, thereby realizing the detection of the vibration in the product transportation process. Therefore, by detecting the vibration by the two types of acceleration sensors, the influence of the sensor accuracy on the detection accuracy can be reduced, and the detection accuracy can be improved.
Drawings
Fig. 1 is a flow chart of a vibration detection method of a transportation vibration meter according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, in the vibration detection method of the transportation vibration meter, a three-axis vibration acceleration sensor is used for collecting vibration information, and a single-axis vibration acceleration sensor is used for collecting vibration information; further comprising the steps of:
s1, detecting the acceleration a of X, Y and Z axis in three directions in the product transportation process in real time through a three-axis vibration acceleration sensorx、ay、az(ii) a Simultaneously, collecting vibration acceleration a through a single-axis vibration acceleration sensor; the time interval between two adjacent detections is delta t, and the delta t is more than 0.5 s;
s2, obtained by detection
Figure BDA0002113648770000041
X, Y and vibration speeds V in three directions of the Z axis are obtainedxn、Vyn、Vzn(ii) a A obtained by detectionnObtaining a single-axis vibration velocity Vn；
Figure BDA0002113648770000042
Figure BDA0002113648770000043
Figure BDA0002113648770000044
Figure BDA0002113648770000045
Figure BDA0002113648770000046
An acceleration sampling value in the X-axis direction at the moment i;
Figure BDA0002113648770000047
an acceleration sampling value in the Y-axis direction at the moment i;
Figure BDA0002113648770000048
an acceleration sampling value in the Z-axis direction at the moment i; a isiAcceleration of uniaxial vibration at time iAcceleration sampling values of the degree sensor;
Figure BDA0002113648770000049
a00; n is the total number of sampling times;
s3, passing the V obtained in the step S2xn、Vyn、VznAnd VnObtaining vibration displacement;
Figure BDA0002113648770000051
Figure BDA0002113648770000052
Figure BDA0002113648770000053
Figure BDA0002113648770000054
Figure BDA0002113648770000055
the value of the vibration speed in the X-axis direction at the moment i is obtained;
Figure BDA0002113648770000056
the value of the vibration speed in the Y-axis direction at the moment i is obtained;
Figure BDA0002113648770000057
the value of the vibration speed in the Z-axis direction at the moment i is obtained; v. ofiThe vibration speed value of the uniaxial vibration acceleration sensor at the time i;
Figure BDA0002113648770000058
V00; n is the total number of sampling times;
s4, passing the V obtained in the step S2xn、Vyn、VznAnd VnAnd S obtained in step S3xn、Syn、SznAnd Sn(ii) a Will Vxn、Vyn、VznVector synthesis is carried out to obtain VAnd n isWill Sxn、Syn、SznVector synthesis is carried out to obtain SAnd n is，
Through VAnd n isAnd VnCalculating a rate error correction parameter kv(ii) a By SAnd n isAnd SnCalculating a displacement error correction parameter ks；
Figure BDA0002113648770000059
Figure BDA00021136487700000510
Figure BDA00021136487700000511
Figure BDA00021136487700000512
kviCorrecting parameters for rate errors in the i detections; k is a radical ofsiCorrecting parameters for displacement errors in the detection of i times;
s5, correcting the vibration information acquired by the single-axis vibration acceleration sensor through correction parameters to obtain final vibration detection data;
Figure BDA0002113648770000061
Figure BDA0002113648770000062
wherein v isiThe vibration speed value of the uniaxial vibration acceleration sensor at the time i; a isiThe acceleration sampling value of the uniaxial vibration acceleration sensor at the time i; k is a radical ofviCorrecting parameters for rate errors in the i detections; k is a radical ofsiAnd correcting the parameters for the displacement errors in the detection of i times. Specifically, the time interval Δ t in step S1 is 2S.
Step S1, detecting the acceleration a in three directions of X, Y and Z axis in the product transportation process in real time through the three-axis vibration acceleration sensorx、ay、az(ii) a Simultaneously, collecting vibration acceleration a through a single-axis vibration acceleration sensor; the time interval between two adjacent detections is delta t, and the delta t is more than 0.5 s; so that raw data of the vibrations during transport of the product can be obtained.
Obtained by detection in step S2
Figure BDA0002113648770000063
X, Y and vibration speeds V in three directions of the Z axis are obtainedxn、Vyn、Vzn(ii) a A obtained by detectionnObtaining a single-axis vibration velocity Vn(ii) a And obtaining a vibration displacement in step S3;
in particular, the method comprises the following steps of,
Figure BDA0002113648770000064
Figure BDA0002113648770000065
Figure BDA0002113648770000066
Figure BDA0002113648770000067
Figure BDA0002113648770000068
an acceleration sampling value in the X-axis direction at the moment i;
Figure BDA0002113648770000069
an acceleration sampling value in the Y-axis direction at the moment i;
Figure BDA00021136487700000610
an acceleration sampling value in the Z-axis direction at the moment i; a isiThe acceleration sampling value of the uniaxial vibration acceleration sensor at the time i;
Figure BDA0002113648770000071
a00; n is the total number of sampling times;
Figure BDA0002113648770000072
Figure BDA0002113648770000073
Figure BDA0002113648770000074
Figure BDA0002113648770000075
Figure BDA0002113648770000076
the value of the vibration speed in the X-axis direction at the moment i is obtained;
Figure BDA0002113648770000077
the value of the vibration speed in the Y-axis direction at the moment i is obtained;
Figure BDA0002113648770000078
the value of the vibration speed in the Z-axis direction at the moment i is obtained; v. ofiThe vibration speed value of the uniaxial vibration acceleration sensor at the time i;
Figure BDA0002113648770000079
V00; n is the total number of sampling times;
obtaining vibration speeds and vibration displacements in multiple directions through steps S2 and S3, so as to provide a basis for obtaining the resultant vibration speed and vibration displacement of the triaxial acceleration sensor;
the resultant vibration rate and the resultant displacement are obtained by calculation in step S4; and then comparing the vibration rate and the vibration displacement detected by the single-axis acceleration sensor to obtain a correction parameter. Thereby combining the data of the single-axis acceleration sensor and the three-axis acceleration sensor.
In step S5, the data detected by the single-axis acceleration sensor is corrected by the correction parameter, thereby improving the detection accuracy.
In summary, according to the vibration detection method for the transportation vibration meter, the three-axis acceleration sensor can detect X, Y, Z vibration accelerations in three directions, then X, Y, Z three vibration accelerations in three directions are used to obtain X, Y, Z vibration speeds and vibration displacements in three directions, and the three vibration accelerations are synthesized to obtain a synthesis rate and a synthesis displacement; and finally, correcting the vibration rate and the displacement detected by the single-axis acceleration sensor through the correction coefficient, thereby realizing the detection of the vibration in the product transportation process. Therefore, by detecting the vibration by the two types of acceleration sensors, the influence of the sensor accuracy on the detection accuracy can be reduced, and the detection accuracy can be improved.

Claims (2)

1. The vibration detection method of the transportation vibration meter is characterized in that a three-axis vibration acceleration sensor is adopted to collect vibration information and a single-axis vibration acceleration sensor is adopted to collect vibration information; further comprising the steps of:
s1, detecting the acceleration a of X, Y and Z axis in three directions in the product transportation process in real time through a three-axis vibration acceleration sensorx、ay、az(ii) a Simultaneously, collecting vibration acceleration a through a single-axis vibration acceleration sensor; the time interval between two adjacent detections is delta t, and the delta t is more than 0.5 s;
s2, obtained by detection
Figure FDA0002113648760000011
X, Y and vibration speeds V in three directions of the Z axis are obtainedxn、Vyn、Vzn(ii) a A obtained by detectionnObtaining a single-axis vibration velocity Vn；
Figure FDA0002113648760000012
Figure FDA0002113648760000013
Figure FDA0002113648760000014
Figure FDA0002113648760000015
Figure FDA0002113648760000016
An acceleration sampling value in the X-axis direction at the moment i;
Figure FDA0002113648760000017
an acceleration sampling value in the Y-axis direction at the moment i;
Figure FDA0002113648760000018
an acceleration sampling value in the Z-axis direction at the moment i; a isiThe acceleration sampling value of the uniaxial vibration acceleration sensor at the time i;
Figure FDA0002113648760000019
a00; n is the total number of sampling times;
s3, passing the V obtained in the step S2xn、Vyn、VznAnd VnObtaining vibration displacement;
Figure FDA00021136487600000110
Figure FDA00021136487600000111
Figure FDA00021136487600000112
Figure FDA00021136487600000113
Figure FDA00021136487600000114
the value of the vibration speed in the X-axis direction at the moment i is obtained;
Figure FDA00021136487600000115
the value of the vibration speed in the Y-axis direction at the moment i is obtained;
Figure FDA00021136487600000116
in the Z-axis direction at time iUpper vibration rate value; v. ofiThe vibration speed value of the uniaxial vibration acceleration sensor at the time i;
Figure FDA00021136487600000117
V00; n is the total number of sampling times;
s4, passing the V obtained in the step S2xn、Vyn、VznAnd VnAnd S obtained in step S3xn、Syn、SznAnd Sn(ii) a Will Vxn、Vyn、VznVector synthesis is carried out to obtain VAnd n isWill Sxn、Syn、SznVector synthesis is carried out to obtain SAnd n is，
Through VAnd n isAnd VnCalculating a rate error correction parameter kv(ii) a By SAnd n isAnd SnCalculating a displacement error correction parameter ks；
Figure FDA0002113648760000021
Figure FDA0002113648760000022
Figure FDA0002113648760000023
Figure FDA0002113648760000024
kviCorrecting parameters for rate errors in the i detections; k is a radical ofsiCorrecting parameters for displacement errors in the detection of i times;
s5, correcting the vibration information acquired by the single-axis vibration acceleration sensor through correction parameters to obtain final vibration detection data;
Figure FDA0002113648760000025
Figure FDA0002113648760000026
wherein v isiThe vibration speed value of the uniaxial vibration acceleration sensor at the time i; a isiThe acceleration sampling value of the uniaxial vibration acceleration sensor at the time i; k is a radical ofviCorrecting parameters for rate errors in the i detections; k is a radical ofsiAnd correcting the parameters for the displacement errors in the detection of i times.
2. The transportation vibration meter vibration detection method according to claim 1, characterized in that: the time interval Δ t in step S1 is 2S.
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