JPH0235012U - - Google Patents
Info
- Publication number
- JPH0235012U JPH0235012U JP11430288U JP11430288U JPH0235012U JP H0235012 U JPH0235012 U JP H0235012U JP 11430288 U JP11430288 U JP 11430288U JP 11430288 U JP11430288 U JP 11430288U JP H0235012 U JPH0235012 U JP H0235012U
- Authority
- JP
- Japan
- Prior art keywords
- road surface
- condition information
- information
- surface condition
- average
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000002123 temporal effect Effects 0.000 description 3
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例としての路面検出装
置の全体概略構成図、第２図は同上装置の機能ブ
ロツク図、第３図ａ，ｂは同上装置の発する晴天
時の第１、第２路面状況情報等の経時的線図、第
４図ａ，ｂは同上装置の発する雨天時の第１、第
２路面状況情報等の経時的線図、第５図は同上装
置の発する第１、第２路面情報の経時的線図、第
６図は従来の路面検知装置により得られる路面状
況情報の強度説明図である。
１……第１路面センサ、２……第２路面センサ
、３……平均路面状況算出手段、４……凹凸比率
算出手段、５……路面情報算出手段５、ｃ１，ｄ
１……第１路面状況情報、ｃ２，ｄ２……第２路
面状況情報、θ１，θ２……向い角、Ｄ，Ｄ′…
…凹凸比率情報、Ｆｃ，Ｆｄ……平均路面状況情
報、Ｒ，Ｒ′……路面情報。
Fig. 1 is an overall schematic configuration diagram of a road surface detection device as an embodiment of the present invention, Fig. 2 is a functional block diagram of the same device, and Figs. 2. Figures 4a and 4b are temporal diagrams of the first and second road surface condition information, etc. issued by the same device during rainy weather, and Figure 5 is a temporal diagram of the first and second road surface condition information issued by the same device. , a temporal diagram of the second road surface information, and FIG. 6 is an explanatory diagram of the intensity of road surface condition information obtained by a conventional road surface detection device. 1...First road surface sensor, 2...Second road sensor, 3...Average road surface condition calculation means, 4...Irregularity ratio calculation means, 5...Road surface information calculation means 5, c1, d
1...First road surface condition information, c2, d2...Second road surface condition information, θ1, θ2...Direction angle, D, D'...
...Roughness ratio information, Fc, Fd...Average road surface condition information, R, R'...Road surface information.
Claims (1)
検出波を送出すると共に路面からの反射波を受信
して第１路面状況情報を出力する第１路面センサ
と、上記路面に第２向い角で検出波を送出すると
共に路面からの反射波を受信して第２路面状況情
報を出力する第２路面センサと、上記第２路面状
況情報より所定時間当たりの平均路面状況情報を
算出する平均路面状況算出手段と、上記第１路面
状況情報を上記平均路面状況情報で除算して路面
の凹凸比率を算出する凹凸比率算出手段と、上記
凹凸比率よりしきい値を減算て路面情報を出力す
る路面情報算出手段とを有した路面検知装置。 a first road surface sensor that transmits a detection wave at a first orientation angle to a road surface located in the direction of travel of the vehicle, receives reflected waves from the road surface, and outputs first road surface condition information; a second road surface sensor that transmits a detection wave and receives reflected waves from the road surface and outputs second road surface condition information; and an average road surface that calculates average road surface condition information per predetermined time from the second road surface condition information. a condition calculating means; an unevenness ratio calculating means for calculating a road surface unevenness ratio by dividing the first road surface condition information by the average road surface condition information; and a road surface for outputting road surface information by subtracting a threshold value from the unevenness ratio. A road surface detection device having information calculation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11430288U JPH068487Y2 (en) | 1988-08-31 | 1988-08-31 | Road surface detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11430288U JPH068487Y2 (en) | 1988-08-31 | 1988-08-31 | Road surface detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0235012U true JPH0235012U (en) | 1990-03-06 |
| JPH068487Y2 JPH068487Y2 (en) | 1994-03-02 |
Family
ID=31354922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11430288U Expired - Lifetime JPH068487Y2 (en) | 1988-08-31 | 1988-08-31 | Road surface detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH068487Y2 (en) |
-
1988
- 1988-08-31 JP JP11430288U patent/JPH068487Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH068487Y2 (en) | 1994-03-02 |
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