US 12,228,465 B2
Method for traceability calibration of calibration device of rock chiseling specific power tester
Jiangwen Tang, Chengdu (CN); Li Jiang, Chengdu (CN); Yuanhui Peng, Chengdu (CN); Liang Xue, Chengdu (CN); Jiebin Yang, Chengdu (CN); and Zhuang Yang, Chengdu (CN)
Assigned to NATIONAL INSTITUTE OF MEASUREMENT AND TESTING TECHNOLOGY, Chengdu (CN)
Filed by NATIONAL INSTITUTE OF MEASUREMENT AND TESTING TECHNOLOGY, Chengdu (CN)
Filed on Nov. 21, 2022, as Appl. No. 18/057,361.
Claims priority of application No. 202210306419.4 (CN), filed on Mar. 25, 2022.
Prior Publication US 2023/0304884 A1, Sep. 28, 2023
Int. Cl. G01L 25/00 (2006.01)
CPC G01L 25/006 (2013.01) 7 Claims
OG exemplary drawing
 
1. A method for traceability calibration of a calibration device of a rock chiseling specific power tester, comprising static calibration and dynamic calibration, wherein
the static calibration comprises:
S1: placing an impact indicator sensor (20) of the calibration device on a static calibration stage, resetting the calibration device to enter a static calibration mode, and resetting a static calibration coefficient k and dynamic calibration coefficients a, b;
S2: installing a standard weight holder (11) on an adapter head (7) of the impact indicator sensor (20), and recording a static indication value f1 of the impact indicator sensor (20) and a total mass of weights m1;
S3: adding a standard weight (12) to the standard weight holder (11) several times, and each time the standard weight (12) is added, recording static indication values f2, f3, . . . , fn of the impact indicator sensor (20) and the total mass of the weights m2, m3, . . . , mn; and
S4: calculating a static coefficient k, and setting the calculated static coefficient as a value of the static calibration coefficient k; and
the dynamic calibration comprises:
K1: placing the impact indicator sensor (20) of the calibration device on a dynamic calibration stage, and adjusting a dynamic standard hammer (13) on the dynamic calibration stage to match the adapter head (7) of the impact indicator sensor (20) when the dynamic standard hammer (13) falls down;
K2: resetting a dynamic calibration coefficient a and a dynamic calibration coefficient b of the calibration device to enter a dynamic calibration mode, and starting the dynamic standard hammer (13) on the dynamic calibration stage to impact the impact indicator sensor (20);
K3: recording a standard impact energy W0 of the dynamic standard hammer (13) and a measured indication value W of the impact indicator sensor (20) to obtain a standard deviation S=W−W0; and
K4: repeating measuring, for several times, the standard impact energy of the dynamic standard hammer (13) and the measured indication value W of the impact indicator sensor (20) to obtain the standard deviation Si (i=1, 2, 3, . . . , n), splitting the standard deviation Si by a univariate linear regression method to set Si=a+bW, and calculating a dynamic coefficient a and a dynamic coefficient b by the univariate linear regression method, and setting the calculated dynamic coefficients as values of the dynamic calibration coefficients a and b.