Method for traceability calibration of calibration device of rock chiseling specific power tester

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.