JPS5614170A - Vehicle sensor - Google Patents

Vehicle sensor

Info

Publication number
JPS5614170A
JPS5614170A JP9015779A JP9015779A JPS5614170A JP S5614170 A JPS5614170 A JP S5614170A JP 9015779 A JP9015779 A JP 9015779A JP 9015779 A JP9015779 A JP 9015779A JP S5614170 A JPS5614170 A JP S5614170A
Authority
JP
Japan
Prior art keywords
speed
vehicle
detection type
mode
doppler
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
Application number
JP9015779A
Other languages
Japanese (ja)
Other versions
JPH0243154B2 (en
Inventor
Shozo Shirasaki
Yoshiharu Yano
Kazuhiro Morizaki
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 JP9015779A priority Critical patent/JPS5614170A/en
Publication of JPS5614170A publication Critical patent/JPS5614170A/en
Publication of JPH0243154B2 publication Critical patent/JPH0243154B2/ja
Granted 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
    • G01S13/92—Radar or analogous systems specially adapted for specific applications for traffic control for velocity measurement

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Traffic Control Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To improve the performance of detecting a vehicle running at a low speed while making it possible to detect a standing vehicle by changing the operation mode of a vehicle sensor on the Doppler system over between the Doppler detection type and reflected pulse detection type. CONSTITUTION:The vehicle sensor in operation is normal of the Doppler detection type (mode 1); and speed arithmetic circuit 8 calculates a mean speed over a constant number of vehicles and comparing circuit 14 compares the mean speed signal 11 to reference speed 17 initially set. When the mean speed is greater than the reference speed, mode 1 is set. Then when the mean speed decreases below the reference speed, mode 2 is set and the control is transferred to the operation of the reflected pulse detection type, thereby waiting vehicle detection. Right after a vehicle is detected, the sensor serves as Doppler detection type one to measure the speed of the detected vehicle and, at the point in time when speed arithmetic ends, returns to the operation of the reflected pulse detection type. Thus, a standing vehicle can be detected and the performance of detecting a vehicle running at a low speed improves.
JP9015779A 1979-07-16 1979-07-16 Vehicle sensor Granted JPS5614170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9015779A JPS5614170A (en) 1979-07-16 1979-07-16 Vehicle sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9015779A JPS5614170A (en) 1979-07-16 1979-07-16 Vehicle sensor

Publications (2)

Publication Number Publication Date
JPS5614170A true JPS5614170A (en) 1981-02-10
JPH0243154B2 JPH0243154B2 (en) 1990-09-27

Family

ID=13990649

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9015779A Granted JPS5614170A (en) 1979-07-16 1979-07-16 Vehicle sensor

Country Status (1)

Country Link
JP (1) JPS5614170A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0443987A (en) * 1990-06-11 1992-02-13 Matsushita Electric Works Ltd Human body detecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0443987A (en) * 1990-06-11 1992-02-13 Matsushita Electric Works Ltd Human body detecting device

Also Published As

Publication number Publication date
JPH0243154B2 (en) 1990-09-27

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