JPS60137376U

JPS60137376U - Vehicle speed detection device

Info

Publication number: JPS60137376U
Application number: JP2499884U
Authority: JP
Inventors: 茂斉藤
Original assignee: カルソニックカンセイ株式会社
Priority date: 1984-02-23
Filing date: 1984-02-23
Publication date: 1985-09-11

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 the drawing]

第１図は、従来例を示す説明図、第２図は本考案による
一実施例を示す構成説明図、第３図は第２図における回
路を詳細にした回路ブロック図、第４図は第３図の回路
動作を説明するための説明図である。１・・・車両、４ａ、４ｂ・・・光検出部、５１ａ、５
１　ｂ−Ａ／Ｄ変換器、５２ａ、５２ｂ・・・記憶部、
５３−・・遅延回路、５４　ａ、　　５４　ｂ−ｐ／Ａ
変換器、５５・・・乗算器、５６・・・積分器、５７・
・・Ａ／Ｄ変換器、５８・・・マイコン、６・・・表示
部。：５１ｂ５２ｂ５４ｂ「− ｌ　　　　　　　　　　　ｊｃ１　　　°゛FIG. 1 is an explanatory diagram showing a conventional example, FIG. 2 is a configuration explanatory diagram showing an embodiment of the present invention, FIG. 3 is a circuit block diagram showing the circuit in FIG. 2 in detail, and FIG. FIG. 4 is an explanatory diagram for explaining the circuit operation of FIG. 3; 1... Vehicle, 4a, 4b... Light detection section, 51a, 5
1 b-A/D converter, 52a, 52b... storage unit,
53--delay circuit, 54 a, 54 b-p/A
Converter, 55... Multiplier, 56... Integrator, 57.
... A/D converter, 58... microcomputer, 6... display unit. :51b52b54b "- l jc 1 °゛

Claims

[Scope of utility model registration request]

A plurality of detection sections 4a and 4b are arranged in a row in the direction of travel of the vehicle 1 and detect radiant heat or reflected light from the road surface and output electric signals, and each of the plurality of detection sections detects the running of the vehicle. an arithmetic processing unit 5 which calculates a temporal deviation in a change pattern of the output signal obtained with the correlation function method and calculates the vehicle speed from the temporal deviation and the distance between the plurality of detection units 4a and 4b; A vehicle speed detection device comprising: