JPS6480810A - Road surface unevenness detector - Google Patents

Road surface unevenness detector

Info

Publication number
JPS6480810A
JPS6480810A JP23967287A JP23967287A JPS6480810A JP S6480810 A JPS6480810 A JP S6480810A JP 23967287 A JP23967287 A JP 23967287A JP 23967287 A JP23967287 A JP 23967287A JP S6480810 A JPS6480810 A JP S6480810A
Authority
JP
Japan
Prior art keywords
road surface
value
level
sensor
improve
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.)
Granted
Application number
JP23967287A
Other languages
Japanese (ja)
Other versions
JP2527336B2 (en
Inventor
Hideo Asami
Kaoru Ohashi
Toshio Yuya
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.)
Denso Ten Ltd
Toyota Motor Corp
Original Assignee
Denso Ten Ltd
Toyota Motor Corp
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 Denso Ten Ltd, Toyota Motor Corp filed Critical Denso Ten Ltd
Priority to JP62239672A priority Critical patent/JP2527336B2/en
Publication of JPS6480810A publication Critical patent/JPS6480810A/en
Application granted granted Critical
Publication of JP2527336B2 publication Critical patent/JP2527336B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To improve the detection accuracy of a road surface step by varying a high and a low threshold value according to the means value of sensor signals corresponding to road surface reflection factors. CONSTITUTION:The road surface in front of a vehicle in its traveling direction is irradiated and its reflected light is photodetected by a sensor part 1. A signal of level corresponding to the road surface reflection factor is outputted by the sensor part 1 to an electronic controller ECU 2. The ECU 2 averages the sensor signal S to calculate the level of the mean value C and compares the value S/C with the threshold values to detect the step. In this case, the threshold values are varied according to the level of the mean value C to improve the detection accuracy of the road surface step.
JP62239672A 1987-09-24 1987-09-24 Road surface unevenness detection device Expired - Lifetime JP2527336B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62239672A JP2527336B2 (en) 1987-09-24 1987-09-24 Road surface unevenness detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62239672A JP2527336B2 (en) 1987-09-24 1987-09-24 Road surface unevenness detection device

Publications (2)

Publication Number Publication Date
JPS6480810A true JPS6480810A (en) 1989-03-27
JP2527336B2 JP2527336B2 (en) 1996-08-21

Family

ID=17048193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62239672A Expired - Lifetime JP2527336B2 (en) 1987-09-24 1987-09-24 Road surface unevenness detection device

Country Status (1)

Country Link
JP (1) JP2527336B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107796325A (en) * 2017-10-12 2018-03-13 南京中高知识产权股份有限公司 A kind of measuring method and measuring system of pavement texture construction depth

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107796325A (en) * 2017-10-12 2018-03-13 南京中高知识产权股份有限公司 A kind of measuring method and measuring system of pavement texture construction depth
CN107796325B (en) * 2017-10-12 2019-11-26 南京中高知识产权股份有限公司 A kind of measurement method and measuring system of pavement texture construction depth

Also Published As

Publication number Publication date
JP2527336B2 (en) 1996-08-21

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