| 摘要 |
PURPOSE:To diagnose transmitting capability, by indicating ultrasonic pulse transmitting direction by a direction-indicating means and indicating condition of transmitting capability of an ultrasonic pulse generating device by a condition- indicating means, by using the ultrasonic pulse received by a receiving means. CONSTITUTION:When a transmitting capability diagnosing device 2 is arranged in front of an ultrasonic-pulse obstacle detecting device of such an object as a vehicle, an ultrasonic pulse emitted from the detecting device is received by an ultrasonic receiver 14, amplified 20, peak-held by a peak detecting circuit 21 and indicated on an analog meter 16. A wave of the signal having been amplified 20 is detected by a wave-detecting comparator 22, and when the output exceeds a prescribed value, a frequency-dividing circuit 24 is reset, and an oscillating pulse from an oscillating circuit 23 is put into the circuit 24, and a speaker 17 generates an intermittent sound signal. It is possible to diagnose the transmitting capability by detecting the transmitting direction of the detecting device using said intermittent sound signal and also by measuring transmitting sound pressure of the detecting device by a meter 16. |
