JPS6092181U

JPS6092181U - Ultrasonic distance measuring device

Info

Publication number: JPS6092181U
Application number: JP18538583U
Authority: JP
Inventors: 毅相澤; 耕一岩田; 根本　友文
Original assignee: 株式会社明電舎
Priority date: 1983-11-30
Filing date: 1983-11-30
Publication date: 1985-06-24
Also published as: JPH0116061Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の超音波距離測定装置の回路構成図、第２
図は第１図に示す回路の主要部分のタイムチャート、第
３図は本考案による超音波距離測定装置の回路構成図、
第４図は第３図に示す回路の主要部分のタイムチャート
、第５図は第３図に示す装置の動作手順を示すフローチ
ャートである。図面中、１はＣＰＵ、　２はクロック回路、４は距離計
測用カウンタ回路、５は発信回路、６は受信回路、７は
超音波発信子、８は超音波受信子、９は発信パルスカウ
ンタ回路、１０はディレィタイムカウンタ回路、２１〜
２９は動作手順の各工程を示す。Figure 1 is a circuit diagram of a conventional ultrasonic distance measuring device;
The figure is a time chart of the main parts of the circuit shown in Figure 1, and Figure 3 is a circuit configuration diagram of the ultrasonic distance measuring device according to the present invention.
4 is a time chart of the main parts of the circuit shown in FIG. 3, and FIG. 5 is a flow chart showing the operating procedure of the apparatus shown in FIG. 3. In the drawing, 1 is a CPU, 2 is a clock circuit, 4 is a distance measurement counter circuit, 5 is a transmitting circuit, 6 is a receiving circuit, 7 is an ultrasonic transmitter, 8 is an ultrasonic receiver, and 9 is a transmitting pulse counter circuit. , 10 is a delay time counter circuit, 21-
29 indicates each step of the operating procedure.

Claims

[Scope of utility model registration request]

An ultrasonic distance measuring device that transmits and receives ultrasonic waves at predetermined timing and measures the distance to a measurement target based on the transmission and reception time width of ultrasonic reflected waves or transmitted waves, includes a transmission pulse counter that counts the number of transmitted and received ultrasonic pulses; A reception delay counter is provided to set the start point of operation of the reception circuit, and when measuring an object at a short distance, a small number of transmission pulses is set in the transmission pulse counter, and a short reception cancellation is set in the reception delay counter. When measuring a long-distance object by setting a time to enable reception of ultrasonic reflected waves or transmitted waves from a short distance, set a large number of transmission pulses in the transmission pulse counter and An ultrasonic distance measuring device characterized in that a long reception cancellation time is set in a delay counter to cancel ultrasonic reflected waves or transmitted waves from a short distance.