JPS6086980U - Ultrasonic distance measuring device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Figure 1 is a circuit configuration diagram of the ultrasonic distance measuring device, Figure 2 is a diagram showing the operation timing of each part of the device shown in Figure 1, and Figure 3 is a diagram showing the operation timing of each part of the device shown in Figure 1.
The figure is a block diagram of the conventional ultrasonic receiving circuit of the device shown in Fig. 1, Fig. 4 is a block diagram of the ultrasonic receiving circuit of the ultrasonic distance measuring device according to the present invention, and Figs. 5 and 6 are electronic tuning. It is a block diagram of each side of a circuit. In the drawing, IA and IB are CPUs, 2 is a counter circuit, and 3 is a counter circuit.
1 is a clock circuit, 4 is an ultrasonic transmitting circuit, 5a is an ultrasonic receiving circuit, 6 is an ultrasonic transmitter, 7 is an ultrasonic receiver, 9 is an amplifier, 10 is a comparator, 11 is a waveform shaping circuit, 12
is a trigger latch circuit, 13 is an electronic tuning circuit, and 14 is D
/A converter, 15 is a frequency setting section.

Claims (1)

[Scope of utility model registration request] In an ultrasonic distance measuring device that emits an ultrasonic pulse to an object and measures the distance to the object based on the transmission/reception time width of reflected waves or transmitted waves of the ultrasound, the ultrasonic distance measurement An electronic tuned amplifier circuit for selectively amplifying the ultrasound frequency is provided in the ultrasonic receiving circuit of the device, and the output of the electronic tuned amplifier circuit is subjected to threshold processing to measure the distance to the object to be measured. An ultrasonic distance measuring device characterized by: