JPH032208U - - Google Patents
Info
- Publication number
- JPH032208U JPH032208U JP6240289U JP6240289U JPH032208U JP H032208 U JPH032208 U JP H032208U JP 6240289 U JP6240289 U JP 6240289U JP 6240289 U JP6240289 U JP 6240289U JP H032208 U JPH032208 U JP H032208U
- Authority
- JP
- Japan
- Prior art keywords
- wave signal
- vehicle body
- lighting device
- calculation unit
- road surface
- 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
- 239000013598 vector Substances 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims 1
- 238000005286 illumination Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Measurement Of Distances Traversed On The Ground (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案の一実施例を示す構成図、第２
図は照明装置及び制御回路を示す回路図、第３図
はランプの取り付けられた車体の外観図、第４図
ａ，ｂは、いずれもオペアンプＡ１，Ａ２及びト
ランジスタＴｒの出力波形を示すグラフ、第５図
は従来の移動距離測定装置の構成図、第６図は同
装置のブロツク図、第７図は従来の空間フイルタ
を示すグラフ、第８図は位相平面内でのベクトル
及びその回転角を示す説明図である。
図面中、１……路面、２……光学系、３……ラ
インセンサ、４……読出回路、６……Ａ／Ｄ変換
器、７……移動距離演算部、８……照明装置、９
……制御回路、１０……振幅演算部、１１……Ｄ
／Ａ変換器、１２……車体、１７……移動速度演
算器、１８……ＣＰＵ、１９……ＲＡＭ、２０…
…ＲＯＭ、Ａ１，Ａ２……オペアンプ、Ｔｒ……
トランジスタである。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing the lighting device and control circuit, Figure 3 is an external view of the car body with the lamp installed, and Figures 4a and b show the output waveforms of the operational amplifiers A 1 and A 2 and the transistor Tr . 5 is a block diagram of a conventional moving distance measuring device, FIG. 6 is a block diagram of the same device, FIG. 7 is a graph showing a conventional spatial filter, and FIG. 8 is a graph showing vectors in a phase plane and It is an explanatory view showing the rotation angle. In the drawings, 1...road surface, 2...optical system, 3...line sensor, 4...readout circuit, 6...A/D converter, 7...movement distance calculation unit, 8...lighting device, 9
...Control circuit, 10...Amplitude calculation section, 11...D
/A converter, 12...Vehicle body, 17...Movement speed calculator, 18...CPU, 19...RAM, 20...
...ROM, A 1 , A 2 ... operational amplifier, T r ...
It is a transistor.
Claims (1)
を撮取し、所定の周期でサンプリングして電気信
号に変換する光検出変換部と、該光検出変換部か
らの電気信号に正弦波、余弦波をそれぞれ乗算し
、所定範囲内で積分することにより任意の周波成
分を抽出し、該周波数で振動する正弦波信号、余
弦波信号を求める空間フイルタ演算部と、該空間
フイルタ演算部により求められた正弦波信号、余
弦波信号を二次元の座標とするベクトルの位相平
面内での原点を中心とする回転角から前記車体の
移動距離を算出する走行距離演算部とを有する空
間フイルタによる距離測定装置において、前記車
体に走行路面を照明する照明装置を設けると共に
前記ベクトルの絶体値をほぼ一定になるように前
記照明装置による光量を制御する電気回路を設け
たことを特徴とする空間フイルタによる可変照明
距離測定装置。 A photodetection converter is installed downward on the vehicle body and captures the light reflected on the road surface, samples it at a predetermined period, and converts it into an electrical signal. A spatial filter calculation unit that extracts an arbitrary frequency component by multiplying each wave and integrating it within a predetermined range, and obtains a sine wave signal and a cosine wave signal that vibrate at the frequency; Distance measurement using a spatial filter having a travel distance calculation unit that calculates the travel distance of the vehicle body from the rotation angle around the origin in the phase plane of a vector whose two-dimensional coordinates are a sine wave signal and a cosine wave signal. The apparatus is characterized in that the vehicle body is provided with a lighting device for illuminating a running road surface, and an electric circuit is provided for controlling the amount of light from the lighting device so that the absolute value of the vector becomes approximately constant. Variable illumination distance measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6240289U JPH0650732Y2 (en) | 1989-05-31 | 1989-05-31 | Variable illumination distance measuring device with spatial filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6240289U JPH0650732Y2 (en) | 1989-05-31 | 1989-05-31 | Variable illumination distance measuring device with spatial filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH032208U true JPH032208U (en) | 1991-01-10 |
| JPH0650732Y2 JPH0650732Y2 (en) | 1994-12-21 |
Family
ID=31591516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6240289U Expired - Lifetime JPH0650732Y2 (en) | 1989-05-31 | 1989-05-31 | Variable illumination distance measuring device with spatial filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0650732Y2 (en) |
-
1989
- 1989-05-31 JP JP6240289U patent/JPH0650732Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0650732Y2 (en) | 1994-12-21 |
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