JPH0281487U

JPH0281487U -

Info

Publication number: JPH0281487U
Application number: JP16196988U
Authority: JP
Priority date: 1988-12-14
Filing date: 1988-12-14
Publication date: 1990-06-22

Description

[Brief explanation of drawings]

第１図ないし第４図は本考案による超音波セン
サを示し、第１図は複数の超音波センサによるダ
ンボールの高さを検出選別する装置の構成斜視図
、第２図は外部制御信号発生器のインターフエイ
ス回路の結線図、第３図は外部制御信号発生器を
マイコンで制御するフローチヤート、第４図は外
部制御信号発生回路により制御される各超音波セ
ンサのタイムチヤート、第５図は従来の複数の超
音波センサによりダンボールの高さを検出選別す
る装置の１個の超音波センサのブロツク図である
。１ａ，１ｂ，１ｃ……超音波センサ、２……超
音波振動子、６……マイコン、１２，１２ａ〜１
２ｄ……ダンボール、１４……外部制御信号発生
器。 1 to 4 show an ultrasonic sensor according to the present invention, FIG. 1 is a perspective view of a device for detecting and sorting the height of cardboard boxes using a plurality of ultrasonic sensors, and FIG. 2 is an external control signal generator. Figure 3 is a flowchart of controlling the external control signal generator with a microcomputer, Figure 4 is a time chart of each ultrasonic sensor controlled by the external control signal generator, and Figure 5 is a diagram of the interface circuit. FIG. 2 is a block diagram of one ultrasonic sensor in a conventional device for detecting and sorting the height of cardboard boxes using a plurality of ultrasonic sensors. 1a, 1b, 1c...Ultrasonic sensor, 2...Ultrasonic vibrator, 6...Microcomputer, 12, 12a-1
2d...Cardboard, 14...External control signal generator.

Claims

[Scope of utility model registration request]

It is equipped with a one-chip microcomputer and an ultrasonic transducer controlled by the one-chip microcomputer, and the ultrasonic transducer projects ultrasonic waves of a predetermined frequency onto an object to be detected, and when the ultrasonic waves hit the object, An ultrasonic sensor that measures the distance to the object by measuring the time it takes to reflect and return to the emission point, and emits a signal when the measured distance matches a preset distance or area. An ultrasonic sensor characterized in that an external control signal generator that emits a signal is provided, and each of the ultrasonic sensors arranged in parallel performs a transmission/reception operation one by one in response to the control signal emitted from the external control signal generator.