JPS6059983U

JPS6059983U - Vehicle detection device

Info

Publication number: JPS6059983U
Application number: JP15295883U
Authority: JP
Inventors: 雅司中野
Original assignee: オムロン株式会社
Priority date: 1983-09-30
Filing date: 1983-09-30
Publication date: 1985-04-25

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図は本考案の一実施例の簡略化した平面図、第２図
はその側面図、第３図は自動車６の進入に伴う超音波の
経路長を示す側面図、第４図は第３図に対応し、超音波
の送波から受波までの時間を示す図、第５図は第１図に
示された実施例に　　　□係る処理手段の詳細ブロック
図、第６図は超音波の送波のフローチャート、第７図は
、動作説明に供するフローチャートである。１・・・車両検知装置、２・・・路面、３・・・超音波
送受波器、６・・・自動車、訃・・前面車体部分、１４
・・・後面車体部分。第６図　　２第７図FIG. 1 is a simplified plan view of an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a side view showing the path length of ultrasonic waves as a car 6 approaches, and FIG. Corresponding to Fig. 3, it is a diagram showing the time from transmission to reception of ultrasonic waves, Fig. 5 is a detailed block diagram of the processing means related to the embodiment shown in Fig. 1, and Fig. 6 is a diagram showing the time from ultrasonic wave transmission to reception. FIG. 7 is a flowchart for explaining the operation. DESCRIPTION OF SYMBOLS 1... Vehicle detection device, 2... Road surface, 3... Ultrasonic transducer, 6... Automobile, deceased... Front body part, 14
...Rear body part. Figure 6 2 Figure 7

Claims

[Scope of utility model registration request]

A vehicle that detects a vehicle based on the time difference between when ultrasonic waves are transmitted from an ultrasonic transducer toward the road surface and when the waves are reflected and received by the road surface and the vehicle on the road surface. In the detection device, the ultrasonic transducer is installed at a position to transmit ultrasonic waves at a predetermined angle with respect to the road surface and along the road length direction, and enters the ultrasonic wave opposite to the ultrasonic wave transmission direction. Arithmetic means for detecting the direction of entry/exit of the vehicle based on the time difference between the front body part of the vehicle and the rear body part of the vehicle exiting along the ultrasonic wave transmission direction. A vehicle detection device characterized by being provided with.