JPS5937574U

JPS5937574U - optical radar device

Info

Publication number: JPS5937574U
Application number: JP13339282U
Authority: JP
Inventors: 矢吹　道郎; 寛遠藤
Original assignee: 日産自動車株式会社
Priority date: 1982-09-02
Filing date: 1982-09-02
Publication date: 1984-03-09
Also published as: JPH0119112Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の光レーダ装置を示す図、第２図は第１図
における距離検出回路の構成を示す図、第３図は第１図
で示した光レーダ装置の各主要出力を示すタイムチャー
ト、第４図は従来の光レーダ装置の測距動作を示す波形
図、第５図は本考案に係る光レーダ装置の一実施例を示
すブロック回路図、第６図は同装置め各主要出力を示す
タイムチャート、第７図は同装置の平均化回路の動作を
説明するための波形図、第８図は同装置の測距動作を示
す波形図である。１・・・投光器、２・・・受光器、Ｌｔ・・・光パルス
、Ｌｒ・・・反射光パルス、３・・・制御回路、１３・
・・前縁検出回路、１５・・・後縁検出回路、１９・・
・平均化回路。Fig. 1 is a diagram showing a conventional optical radar device, Fig. 2 is a diagram showing the configuration of the distance detection circuit in Fig. 1, and Fig. 3 is a time diagram showing each main output of the optical radar device shown in Fig. 1. 4 is a waveform diagram showing the ranging operation of a conventional optical radar device, FIG. 5 is a block circuit diagram showing an embodiment of the optical radar device according to the present invention, and FIG. 6 is a diagram showing each main component of the device. A time chart showing the output, FIG. 7 is a waveform chart for explaining the operation of the averaging circuit of the same device, and FIG. 8 is a waveform chart showing the distance measuring operation of the same device. DESCRIPTION OF SYMBOLS 1... Emitter, 2... Light receiver, Lt... Light pulse, Lr... Reflected light pulse, 3... Control circuit, 13.
... Leading edge detection circuit, 15... Trailing edge detection circuit, 19...
・Averaging circuit.

Claims

[Scope of Claim for Utility Model Registration] The period from the time when a light pulse is generated from a projector toward a distance-measuring object to the time when a light receiver receives a reflected light pulse reflected from the light pulse toward a distance-measuring object. In an optical radar device that determines the distance to the object to be measured based on time; a first delay time detection means for detecting the time from the generation point of the optical pulse to the pulse leading edge of the received reflected optical pulse; and; second delay time detection means for detecting the time from the generation point of the light pulse to the trailing edge of the received reflected light pulse; and; the first delay time detection means and the second delay time detection means. 1. An optical radar device comprising: averaging means for taking an average value of two delay times detected by the means.