JPS5722576A - Ultrasonic type vehicle speed measuring apparatus - Google Patents

Ultrasonic type vehicle speed measuring apparatus

Info

Publication number
JPS5722576A
JPS5722576A JP9791780A JP9791780A JPS5722576A JP S5722576 A JPS5722576 A JP S5722576A JP 9791780 A JP9791780 A JP 9791780A JP 9791780 A JP9791780 A JP 9791780A JP S5722576 A JPS5722576 A JP S5722576A
Authority
JP
Japan
Prior art keywords
noise
ultrasonic
vehicle
vehicle speed
measuring apparatus
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
Application number
JP9791780A
Other languages
Japanese (ja)
Inventor
Yasuyuki Suzuki
Ko Honma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9791780A priority Critical patent/JPS5722576A/en
Publication of JPS5722576A publication Critical patent/JPS5722576A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/50—Systems of measurement, based on relative movement of the target
    • G01S15/52—Discriminating between fixed and moving objects or between objects moving at different speeds

Abstract

PURPOSE:To prevent mismeasurement due to noise by interrupting the speed computation when a particular reflected ultrasonic noise is detected. CONSTITUTION:A part of an ultrasonic wave reflected from a vehicle is received with an ultrasonic receiver 5 and applied to a noise detecting section 17. When ultrasonic noise or the like coming from a chain or the like of the vehicle passing the BPF14 exceeds the specified level, a detector 15 generates a detection output. Then, this detection output controls an analog switch circuit 16 to interrupt the input to a Doppler counting circuit 9. This eliminates miscomputation due to ultrasonic noise from the chain or the like thereby preventing mismeasurement of the speed of the vehicle due to such noise.
JP9791780A 1980-07-16 1980-07-16 Ultrasonic type vehicle speed measuring apparatus Pending JPS5722576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9791780A JPS5722576A (en) 1980-07-16 1980-07-16 Ultrasonic type vehicle speed measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9791780A JPS5722576A (en) 1980-07-16 1980-07-16 Ultrasonic type vehicle speed measuring apparatus

Publications (1)

Publication Number Publication Date
JPS5722576A true JPS5722576A (en) 1982-02-05

Family

ID=14205048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9791780A Pending JPS5722576A (en) 1980-07-16 1980-07-16 Ultrasonic type vehicle speed measuring apparatus

Country Status (1)

Country Link
JP (1) JPS5722576A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167983A (en) * 1982-03-29 1983-10-04 Shimada Phys & Chem Ind Co Ltd Ultrasonic distance measuring apparatus
JPS58179370A (en) * 1982-02-24 1983-10-20 ホランドセ・シグナ−ルアパラ−テン・ビ−・ベ− Sonar device
JPS5995031A (en) * 1982-10-28 1984-05-31 スト−ツ・インストルメント・コンパニ− Ultrasonic apparatus for measuring sight system
JPS6050470A (en) * 1983-08-31 1985-03-20 Matsushita Electric Ind Co Ltd Ultrasonic wave type car speed measuring apparatus
JPS60151571A (en) * 1984-01-19 1985-08-09 Yokogawa Medical Syst Ltd Echo signal handling system of base band type sonar
JPS6311130A (en) * 1986-07-02 1988-01-18 ヴィアイエスエックス，インコーポレイテッド Apparatus and method for visually displaying cross-sectionalstate of cornea

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5310269A (en) * 1976-07-15 1978-01-30 Matsushita Electronics Corp Positioning device for semiconductor devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5310269A (en) * 1976-07-15 1978-01-30 Matsushita Electronics Corp Positioning device for semiconductor devices

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179370A (en) * 1982-02-24 1983-10-20 ホランドセ・シグナ−ルアパラ−テン・ビ−・ベ− Sonar device
JPH0317110B2 (en) * 1982-02-24 1991-03-07 Hollandse Signaalapparaten Bv
JPS58167983A (en) * 1982-03-29 1983-10-04 Shimada Phys & Chem Ind Co Ltd Ultrasonic distance measuring apparatus
JPS5995031A (en) * 1982-10-28 1984-05-31 スト−ツ・インストルメント・コンパニ− Ultrasonic apparatus for measuring sight system
JPS6050470A (en) * 1983-08-31 1985-03-20 Matsushita Electric Ind Co Ltd Ultrasonic wave type car speed measuring apparatus
JPH0522190B2 (en) * 1983-08-31 1993-03-26 Matsushita Electric Ind Co Ltd
JPS60151571A (en) * 1984-01-19 1985-08-09 Yokogawa Medical Syst Ltd Echo signal handling system of base band type sonar
JPH0231354B2 (en) * 1984-01-19 1990-07-12 Yokokawa Medeikaru Shisutemu Kk
JPS6311130A (en) * 1986-07-02 1988-01-18 ヴィアイエスエックス，インコーポレイテッド Apparatus and method for visually displaying cross-sectionalstate of cornea
JPH0351166B2 (en) * 1986-07-02 1991-08-06 Ei Resuperansu Furanshisu

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