JPS62277584A - Ultrasonic body detector - Google Patents

Ultrasonic body detector

Info

Publication number
JPS62277584A
JPS62277584A JP12061986A JP12061986A JPS62277584A JP S62277584 A JPS62277584 A JP S62277584A JP 12061986 A JP12061986 A JP 12061986A JP 12061986 A JP12061986 A JP 12061986A JP S62277584 A JPS62277584 A JP S62277584A
Authority
JP
Japan
Prior art keywords
frequency
noise
decision making
noises
decision
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
JP12061986A
Other languages
Japanese (ja)
Other versions
JPH0412835B2 (en
Inventor
Toshiki Yamane
Susumu Katayama
Naoya Azuma
Toshimasa Takagi
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 JP12061986A priority Critical patent/JPH0412835B2/ja
Publication of JPS62277584A publication Critical patent/JPS62277584A/en
Publication of JPH0412835B2 publication Critical patent/JPH0412835B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To preclude malfunction caused by a noise and to speed up the detection of a body on a less noise condition by detecting the noise state of a received signal, and increasing the frequency of decision making when there are many noises or decreasing the frequency of decision making when not.
CONSTITUTION: The oscillation signal of a transmitting circuit 3 is transmitted by a ultrasonic sensor 1 and a reflected wave from a body 8 is received by the sensor 1, whose reception output is stored temporarily in a storage part 22 through a receiving circuit 4. A noise detection part 25 detects the noise state of the received signal from the stored detection signal waveform. Then when the received signal has many noises, a decision frequency setting part 26 sets the frequency of decision making high to preclude malfunction due to the noises. When there are a few noises, the setting part 26 sets the frequency of decision making low and then a decision part 23 decides the presence of the body 8 speedily.
COPYRIGHT: (C)1987,JPO&Japio
JP12061986A 1986-05-26 1986-05-26 Expired - Lifetime JPH0412835B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12061986A JPH0412835B2 (en) 1986-05-26 1986-05-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12061986A JPH0412835B2 (en) 1986-05-26 1986-05-26

Publications (2)

Publication Number Publication Date
JPS62277584A true JPS62277584A (en) 1987-12-02
JPH0412835B2 JPH0412835B2 (en) 1992-03-05

Family

ID=14790720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12061986A Expired - Lifetime JPH0412835B2 (en) 1986-05-26 1986-05-26

Country Status (1)

Country Link
JP (1) JPH0412835B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0382978A (en) * 1989-08-25 1991-04-08 Matsushita Electric Works Ltd Ultrasonic detector
JPH04250388A (en) * 1991-01-28 1992-09-07 Matsushita Electric Works Ltd Ultrasonic object detector
JP2011133274A (en) * 2009-12-22 2011-07-07 Panasonic Electric Works Co Ltd Obstacle monitoring device for vehicle
JP2016080645A (en) * 2014-10-22 2016-05-16 株式会社デンソー Object detector
JP2017090136A (en) * 2015-11-06 2017-05-25 三菱電機株式会社 Ultrasonic sensor device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0382978A (en) * 1989-08-25 1991-04-08 Matsushita Electric Works Ltd Ultrasonic detector
JPH04250388A (en) * 1991-01-28 1992-09-07 Matsushita Electric Works Ltd Ultrasonic object detector
JP2011133274A (en) * 2009-12-22 2011-07-07 Panasonic Electric Works Co Ltd Obstacle monitoring device for vehicle
US8674818B2 (en) 2009-12-22 2014-03-18 Panasonic Corporation In-vehicle monitoring system
JP2016080645A (en) * 2014-10-22 2016-05-16 株式会社デンソー Object detector
JP2017090136A (en) * 2015-11-06 2017-05-25 三菱電機株式会社 Ultrasonic sensor device

Also Published As

Publication number Publication date
JPH0412835B2 (en) 1992-03-05

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