JPS54137387A - Road condition detector - Google Patents

Road condition detector

Info

Publication number
JPS54137387A
JPS54137387A JP4547278A JP4547278A JPS54137387A JP S54137387 A JPS54137387 A JP S54137387A JP 4547278 A JP4547278 A JP 4547278A JP 4547278 A JP4547278 A JP 4547278A JP S54137387 A JPS54137387 A JP S54137387A
Authority
JP
Japan
Prior art keywords
road
reflected waves
waves
processor
reflected
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
JP4547278A
Other languages
Japanese (ja)
Inventor
Masao Mizuno
Takaaki Kotake
Hiroshi Numata
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP4547278A priority Critical patent/JPS54137387A/en
Publication of JPS54137387A publication Critical patent/JPS54137387A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it sure to detect the road conditions at many points by using ultrasonic waves.
CONSTITUTION: A suitable number of ultrasonic transmitting and receiving devices 115 are arranged at a preset level H above a load L. A vehicular detector 101 using a processor is also provided and is connected with a center processor 104 through a modulating device 102 and a demodulator 103. As a result, the time period for which the detector 101 receives the reflected waves from the road L after it transmits the ultrasonic waves is used as a reference. When the reflected waves are received during the time period which is shorter than the reference and within a preset range, vehicular detecting signals DS are deemed as the reflected waves from the road L, while being deemed as the reflected waves from a vehicle CA, when there are reflected waves which are reflected within the range of a road renewing zole La imagined while adding the fluctuation in the transmission speed due to the temperature change, thereby to generate road position data signals DL so that the temperature of the road L is calculated by the processor 104 and so that the number of the vehicles passing can be measured.
COPYRIGHT: (C)1979,JPO&Japio
JP4547278A 1978-04-17 1978-04-17 Road condition detector Pending JPS54137387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4547278A JPS54137387A (en) 1978-04-17 1978-04-17 Road condition detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4547278A JPS54137387A (en) 1978-04-17 1978-04-17 Road condition detector

Publications (1)

Publication Number Publication Date
JPS54137387A true JPS54137387A (en) 1979-10-25

Family

ID=12720322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4547278A Pending JPS54137387A (en) 1978-04-17 1978-04-17 Road condition detector

Country Status (1)

Country Link
JP (1) JPS54137387A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131437A (en) * 1983-12-20 1985-07-13 Mitsubishi Electric Corp Ultrasonic wave type room temperature measuring device
CN108956605A (en) * 2018-06-15 2018-12-07 武林 A kind of radiationless detection device for highway flaw detection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131437A (en) * 1983-12-20 1985-07-13 Mitsubishi Electric Corp Ultrasonic wave type room temperature measuring device
CN108956605A (en) * 2018-06-15 2018-12-07 武林 A kind of radiationless detection device for highway flaw detection
CN108956605B (en) * 2018-06-15 2021-04-13 武林 A radiationless detection device for highway is detected a flaw

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