JPS62137735U - - Google Patents
Info
- Publication number
- JPS62137735U JPS62137735U JP2154386U JP2154386U JPS62137735U JP S62137735 U JPS62137735 U JP S62137735U JP 2154386 U JP2154386 U JP 2154386U JP 2154386 U JP2154386 U JP 2154386U JP S62137735 U JPS62137735 U JP S62137735U
- Authority
- JP
- Japan
- Prior art keywords
- value
- intensity
- reflected wave
- detection
- determines
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図はこの考案のクレーム対応図、第２図は
この考案の一実施例のブロツク図、第３図は上記
実施例における反射波強度の説明図、第４図は上
記実施例の動作を示すフローチヤート、第５図は
上記実施例における反射波強度設定値の補正動作
を示すフローチヤートである。
１……超音波発信装置、２……送波器、３……
受波器、４……受信装置、５……制御装置、６…
…路面状況検知装置、７……外気温センサ、８…
…４輪駆動車、９……エンジン、１０……ミツシ
ヨン、１１……前輪、１２……切換装置、１３…
…プロペラシヤフト、１４……後輪デフ、１５…
…後輪、１６……作動装置、１７……駆動回路、
１８……車速センサ。
Fig. 1 is a diagram corresponding to the claims of this invention, Fig. 2 is a block diagram of an embodiment of this invention, Fig. 3 is an explanatory diagram of the reflected wave intensity in the above embodiment, and Fig. 4 is an illustration of the operation of the above embodiment. FIG. 5 is a flowchart showing the correction operation of the reflected wave intensity setting value in the above embodiment. 1... Ultrasonic transmitter, 2... Transmitter, 3...
Receiver, 4... Receiving device, 5... Control device, 6...
...Road surface condition detection device, 7...Outside temperature sensor, 8...
...Four-wheel drive vehicle, 9... Engine, 10... Mission, 11... Front wheel, 12... Switching device, 13...
...Propeller shaft, 14...Rear wheel differential, 15...
...Rear wheel, 16... Actuation device, 17... Drive circuit,
18...Vehicle speed sensor.
Claims (1)
と、路面からの反射波の受信手段と、この受信手
段の反射波強度を設定値と比較し、設定値を下回
つた時に低摩擦係数路と判断して信号を出力する
判別手段と、外気温センサと、車速センサと、車
高値検出手段と、これら外気温センサによる外気
温が所定値以上であり、車速センサによる車速が
所定値以上であり、かつ車高値検出手段による車
高値の変動振幅が所定値以内である時の前記受信
手段による反射波強度を基準化し、この基準値を
基に前記反射波強度の設定値を決定する設定値算
出手段とを備えて成る路面状況検知装置。 A detection wave transmitting means for emitting a detection wave toward the road surface, a means for receiving reflected waves from the road surface, and a reflected wave intensity of the receiving means is compared with a set value, and when the intensity of the reflected wave from the receiving means is lower than the set value, a low friction coefficient road is detected. an outside temperature sensor, a vehicle speed sensor, a vehicle height value detection means, and an outside temperature sensor that determines that the outside temperature is above a predetermined value, and a vehicle speed sensor that determines that the vehicle speed is above a predetermined value. a setting value that standardizes the intensity of the reflected wave by the receiving means when the amplitude of fluctuation of the vehicle height value detected by the vehicle height value detection means is within a predetermined value, and determines the set value of the intensity of the reflected wave based on this reference value. A road surface condition detection device comprising calculation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2154386U JPS62137735U (en) | 1986-02-19 | 1986-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2154386U JPS62137735U (en) | 1986-02-19 | 1986-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62137735U true JPS62137735U (en) | 1987-08-31 |
Family
ID=30818076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2154386U Pending JPS62137735U (en) | 1986-02-19 | 1986-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62137735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875711A (en) * | 1994-09-02 | 1996-03-22 | Azuma Shokai:Kk | Road surface condition detecting method |
-
1986
- 1986-02-19 JP JP2154386U patent/JPS62137735U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875711A (en) * | 1994-09-02 | 1996-03-22 | Azuma Shokai:Kk | Road surface condition detecting method |
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