METHOD FOR MEASURING COEFFICIENT OF ACCELERATOR SENSOR CONVERSION BY MOVING PLATFORM AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC G01P15/00 

FIELD: measuring equipment.

SUBSTANCE: method for measuring the coefficient of the accelerator sensor conversion by moving a platform consists in the fact that the number of steps N made by one foot of the athlete on a platform moving with a speed ν (m/s) in the opposite direction of the athlete's run is calculated, in a period of time t counted by a stopwatch, to stay at the fixed reference point, the frequency of foot movement ω per time unit is calculated according to the measured parameters:

where ω is frequency of leg movement (rad/sec); N is the number of steps made by the foot per time unit t; t is the time spent by the athlete on the passage of N steps, wherein before the platform movement is turned on, an acceleration sensor is fixed to the ankle of one of the athlete's legs, the sensor's signal is fed to the input of spectral analyzer with a band pass filter with central angular frequency ω preinstalled in it, a digital voltmeter is connected to its output, which "u" indication will correspond to the acceleration rate on angular frequency ω, calculated by the formula

where ν is a moving platform motion speed (m/sec); a is a sensor acceleration on frequency ω (in "g" units), which ratio gives a value of sensor conversion coefficient on frequency ω:

EFFECT: increased accuracy of the acceleration vibration frequency measurement.

2 cl, 1 dwg

в ед. - in "g" units