JPS6483177A - Ultrasonic warning device - Google Patents

Ultrasonic warning device

Info

Publication number
JPS6483177A
JPS6483177A JP24153887A JP24153887A JPS6483177A JP S6483177 A JPS6483177 A JP S6483177A JP 24153887 A JP24153887 A JP 24153887A JP 24153887 A JP24153887 A JP 24153887A JP S6483177 A JPS6483177 A JP S6483177A
Authority
JP
Japan
Prior art keywords
receiver
abnormality
detouring
wave signal
transmitter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24153887A
Other languages
Japanese (ja)
Inventor
Kazumasa Yamauchi
Hironobu Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP24153887A priority Critical patent/JPS6483177A/en
Publication of JPS6483177A publication Critical patent/JPS6483177A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain a highly reliable warning device against disturbance and the like from the outside by judging abnormality from the change of a received wave signal directly input into a receiver through detouring from a transmitter. CONSTITUTION:A transmitter 1 transmits an ultrasonic wave P of fixed frequency in a warning area and a receiver 2 receives a reflected wave from the warning area. An object detection means 3 detects a moving object on the basis of a Doppler component contained in a received wave signal received by the receiver 2. An abnormality judgement means 4 pulsatorily transmitts an ultrasonic wave from the transmitter 1 and judges outer abnormality of a warning device on the basis of a received wave signal obtained by receiving a detouring wave of an ultrasonic wave by the receiver 2. Further, a switching means 5 is changed over the connection of the detection means 3, the judgement means 4, the transmitter 1, and the receiver 2, and an object detecting mode and an abnormality judging mode are selected. In other words, the abnormality in the circumference to the warning device can be judged by monitoring whether the amplitude level of a detouring received wave signal is higher than a set point, and whether the length of a detouring received wave signal is within a set time.
JP24153887A 1987-09-26 1987-09-26 Ultrasonic warning device Pending JPS6483177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24153887A JPS6483177A (en) 1987-09-26 1987-09-26 Ultrasonic warning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24153887A JPS6483177A (en) 1987-09-26 1987-09-26 Ultrasonic warning device

Publications (1)

Publication Number Publication Date
JPS6483177A true JPS6483177A (en) 1989-03-28

Family

ID=17075843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24153887A Pending JPS6483177A (en) 1987-09-26 1987-09-26 Ultrasonic warning device

Country Status (1)

Country Link
JP (1) JPS6483177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006003124A (en) * 2004-06-15 2006-01-05 Nippon Soken Inc Ultrasonic sensor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006003124A (en) * 2004-06-15 2006-01-05 Nippon Soken Inc Ultrasonic sensor device

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