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JPS548500A - Vehicle detector of ultrasonic type - Google Patents

Vehicle detector of ultrasonic type

Info

Publication number
JPS548500A
JPS548500A JP7408277A JP7408277A JPS548500A JP S548500 A JPS548500 A JP S548500A JP 7408277 A JP7408277 A JP 7408277A JP 7408277 A JP7408277 A JP 7408277A JP S548500 A JPS548500 A JP S548500A
Authority
JP
Japan
Prior art keywords
vehicle detector
ultrasonic type
malfunction
variation
road surface
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
JP7408277A
Other languages
Japanese (ja)
Inventor
Koichi Yomogihara
Kiyoshi Tanaka
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.)
Nippon Signal Co Ltd
Original Assignee
Nippon Signal Co 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 Nippon Signal Co Ltd filed Critical Nippon Signal Co Ltd
Priority to JP7408277A priority Critical patent/JPS548500A/en
Publication of JPS548500A publication Critical patent/JPS548500A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prevent the malfunction of the sensor due to temperature drift in air, by automatically correcting the reception gate switching time setting depending on the variation of the road surface reflection wave receiving time.
COPYRIGHT: (C)1979,JPO&Japio
JP7408277A 1977-06-21 1977-06-21 Vehicle detector of ultrasonic type Pending JPS548500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7408277A JPS548500A (en) 1977-06-21 1977-06-21 Vehicle detector of ultrasonic type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7408277A JPS548500A (en) 1977-06-21 1977-06-21 Vehicle detector of ultrasonic type

Publications (1)

Publication Number Publication Date
JPS548500A true JPS548500A (en) 1979-01-22

Family

ID=13536883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7408277A Pending JPS548500A (en) 1977-06-21 1977-06-21 Vehicle detector of ultrasonic type

Country Status (1)

Country Link
JP (1) JPS548500A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252676A (en) * 1991-06-24 1993-10-12 Nippon Oil & Fats Co., Ltd. Ethylene polymer crosslinking composition
US5298564A (en) * 1990-04-16 1994-03-29 Nippon Oil & Fats Co., Ltd. Composition for cross-linking of ethylene-polymer, method for cross-linking ethylene-polymer, and cross-linkable composition
JPH0712927A (en) * 1991-08-30 1995-01-17 Kobe Steel Ltd Ultrasonic object detecting device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298564A (en) * 1990-04-16 1994-03-29 Nippon Oil & Fats Co., Ltd. Composition for cross-linking of ethylene-polymer, method for cross-linking ethylene-polymer, and cross-linkable composition
US5252676A (en) * 1991-06-24 1993-10-12 Nippon Oil & Fats Co., Ltd. Ethylene polymer crosslinking composition
JPH0712927A (en) * 1991-08-30 1995-01-17 Kobe Steel Ltd Ultrasonic object detecting device

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