JPH0399385U - - Google Patents
Info
- Publication number
- JPH0399385U JPH0399385U JP747690U JP747690U JPH0399385U JP H0399385 U JPH0399385 U JP H0399385U JP 747690 U JP747690 U JP 747690U JP 747690 U JP747690 U JP 747690U JP H0399385 U JPH0399385 U JP H0399385U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle speed
- transmitter
- road surface
- receiver
- vehicle
- 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
- 230000005540 biological transmission Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例に係わる路面状態予
測センサが使用されたサスペンシヨン装置を示す
ブロツク図、第２図は同路面状態予測センサの取
り付け位置を示す車両の側面図、第３図は送信器
と受信器との位置関係を示す平面図、第４図は送
信パルスを示す波形図、第５図は車速に応じて送
信器の駆動方式が切換えられる様子及び車速に対
応する送信パルスのパルス間隔ｔｏｆｆの関係を
示す図、第６図は同実施例の動作を示すフローチ
ヤート、第７図は送信器をパルス駆動した場合の
送信波、受信波等の関係を示すタイミングチヤー
ト、第８図は送信器を連続駆動した場合の送信波
、受信波等の関係を示すタイミングチヤートであ
る。
２５……コントロールユニツト、２７……車速
センサ、２８……Ｇセンサ、４０……送信器、４
１……受信器、４２……送信部、４３……受信部
。
FIG. 1 is a block diagram showing a suspension device in which a road surface condition prediction sensor according to an embodiment of the present invention is used, FIG. 2 is a side view of a vehicle showing the mounting position of the road surface condition prediction sensor, and FIG. 3 is a plan view showing the positional relationship between the transmitter and receiver, Fig. 4 is a waveform diagram showing the transmitted pulse, and Fig. 5 shows how the transmitter drive method is switched depending on the vehicle speed and the transmitted pulse corresponding to the vehicle speed. FIG. 6 is a flowchart showing the operation of the same embodiment; FIG. 7 is a timing chart showing the relationship between transmitted waves, received waves, etc. when the transmitter is pulse-driven; FIG. 8 is a timing chart showing the relationship between transmitted waves, received waves, etc. when the transmitter is continuously driven. 25... Control unit, 27... Vehicle speed sensor, 28... G sensor, 40... Transmitter, 4
1...Receiver, 42...Transmitter, 43...Receiver.
Claims (1)
信器と、この送信器に送信パルスあるいは連続し
た送信電圧を供給する送信部と、上記送信器から
送信された超音波が路面で反射された反射波を受
信する受信器と、この受信器で受信される反射波
を解析して車両走行前方方向の路面を凹凸を判断
する判断手段と、車速を検出する車速検出手段と
、この車速検出手段により検出される車速が基準
車速以上である場合には上記送信部から連続した
送信電圧を出力させ該車速が上記基準車速より小
さい場合には上記送信部から送信パルスを出力さ
せる制御手段とを具備したことを特徴とする路面
状態予測センサ。 A transmitter that transmits ultrasonic waves in the forward direction of the vehicle, a transmitter that supplies transmission pulses or continuous transmission voltage to this transmitter, and reflections of the ultrasonic waves transmitted from the transmitter that are reflected on the road surface. A receiver for receiving waves, a determining means for analyzing the reflected waves received by the receiver to determine whether the road surface in the forward direction of the vehicle is uneven, a vehicle speed detecting means for detecting the vehicle speed, and the vehicle speed detecting means A control means for outputting a continuous transmission voltage from the transmitter when the detected vehicle speed is equal to or higher than the reference vehicle speed, and outputting a transmission pulse from the transmitter when the vehicle speed is smaller than the reference vehicle speed. A road surface condition prediction sensor characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP747690U JPH0399385U (en) | 1990-01-31 | 1990-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP747690U JPH0399385U (en) | 1990-01-31 | 1990-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0399385U true JPH0399385U (en) | 1991-10-17 |
Family
ID=31511135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP747690U Pending JPH0399385U (en) | 1990-01-31 | 1990-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0399385U (en) |
-
1990
- 1990-01-31 JP JP747690U patent/JPH0399385U/ja active Pending
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