PURPOSE: To measure the riding comfort level at a high accuracy and easily with a small and light device by computing the results in the correction of outputs of an accelerometer with a riding comfort filter to indicate the level.
CONSTITUTION: Outputs of an accelerometer 8 of a vehicle riding comfort segment meter arranged within a train are inputted into riding comfort filter 10 and 11 for vertical and horizontal vibrations via a preamplifier 9 and an absolute value is obtained with an absolute value circuit 12 through a selector switch 4 following the correction thereof for frequency components. The output of the circuit 12 is sent to an arithmetic memory processing section 15 via a sample hold circuit 13 and an analog-digital converter 14 to calculate an effective value of a weighted vibration acceleration, from which a riding comfort level is determined and indicated on a level display 2. On the other hand, the processing section 15 indicates an average time of the riding comfort on a time display 20 with the indication of the level. This enables the measurement of the riding comfort level at a high accuracy and easily with a small and light device.
ABE ISAMU
TOYODA MINORU
YOSHIDA SEIKI KK
| JPS566135A | 1981-01-22 | |||
| JPS567577A | 1981-01-26 |