JPS56135352A - Collision alarm system - Google Patents

Collision alarm system

Info

Publication number
JPS56135352A
JPS56135352A JP3810380A JP3810380A JPS56135352A JP S56135352 A JPS56135352 A JP S56135352A JP 3810380 A JP3810380 A JP 3810380A JP 3810380 A JP3810380 A JP 3810380A JP S56135352 A JPS56135352 A JP S56135352A
Authority
JP
Japan
Prior art keywords
signal
distance
circuit
interrupted
obstacle
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
JP3810380A
Other languages
Japanese (ja)
Inventor
Ikuo Matsuda
Akihiro Takeuchi
Masataka Isaki
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 JP3810380A priority Critical patent/JPS56135352A/en
Publication of JPS56135352A publication Critical patent/JPS56135352A/en
Pending legal-status Critical Current

Links

Landscapes

  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

PURPOSE: To deliver the sense of a distance effectively to a driver or the like by a method wherein a period of interrupt an alarming sound is varied in accordance with a detected distance upon detecting the distance between a movable body and an obstacle and informing it to the driver or the like by a sound.
CONSTITUTION: When a signal produced in an oscillating circuit 1 is emitted to the outside of a car or the like through an oscillator not shown in the diagram and is reflected by the obstacle, the reflected signal is received by a receiver, then, is amplified in the amplifying circuit 6 and is inputted into a comparating and deciding circuit 7, here, a time difference between the reflected signal and a signal from the oscillating circuit 1, that means an information (a) about a distance to the obstacle, is detected. This distance information (a) is inputted into an interrupted period signal producing circuit 11 and an interrupted period signal (c) having an interrupted period ts of the alarming sound and a pulse width tp is produced in accordance with the information (a). According to this method, the alarming sound having a pulse width tp and a frequency fo may be produced because a continuous signal (b) from the oscillating circuit 13 is interrupted by a switching circuit 12.
COPYRIGHT: (C)1981,JPO&Japio
JP3810380A 1980-03-24 1980-03-24 Collision alarm system Pending JPS56135352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3810380A JPS56135352A (en) 1980-03-24 1980-03-24 Collision alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3810380A JPS56135352A (en) 1980-03-24 1980-03-24 Collision alarm system

Publications (1)

Publication Number Publication Date
JPS56135352A true JPS56135352A (en) 1981-10-22

Family

ID=12516130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3810380A Pending JPS56135352A (en) 1980-03-24 1980-03-24 Collision alarm system

Country Status (1)

Country Link
JP (1) JPS56135352A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59116874U (en) * 1983-01-28 1984-08-07 矢崎総業株式会社 Optical vehicle obstacle detection device
JPS6020950U (en) * 1983-07-21 1985-02-13 マツダ株式会社 Automobile collision warning system
JPS6174100A (en) * 1984-09-19 1986-04-16 株式会社トキメック Alarm for ship
JPH0581770U (en) * 1992-03-31 1993-11-05 株式会社小糸製作所 Vehicle radar device
JPH0826051A (en) * 1994-07-15 1996-01-30 Sumitomo Electric Ind Ltd Collision preventing device
US6046671A (en) * 1995-03-30 2000-04-04 Sumitomo Electric Industries, Ltd. Apparatus for assisting driver in carefully driving
JP2001051057A (en) * 1999-08-06 2001-02-23 Matsushita Electric Works Ltd Obstacle detection system for vehicle
JP2007272487A (en) * 2006-03-31 2007-10-18 Tcm Corp Relative position recognition system in work area
JP2011031825A (en) * 2009-08-05 2011-02-17 Denso Corp Vehicle presence informing device
JP2023532862A (en) * 2020-07-08 2023-08-01 エンドマグネティクス リミテッド Systems and methods for detecting markers for surgical guidance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541544A (en) * 1977-06-06 1979-01-08 Yukio Iwata Safe traffic method and its device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541544A (en) * 1977-06-06 1979-01-08 Yukio Iwata Safe traffic method and its device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59116874U (en) * 1983-01-28 1984-08-07 矢崎総業株式会社 Optical vehicle obstacle detection device
JPS6020950U (en) * 1983-07-21 1985-02-13 マツダ株式会社 Automobile collision warning system
JPS6174100A (en) * 1984-09-19 1986-04-16 株式会社トキメック Alarm for ship
JPH0581770U (en) * 1992-03-31 1993-11-05 株式会社小糸製作所 Vehicle radar device
JPH0826051A (en) * 1994-07-15 1996-01-30 Sumitomo Electric Ind Ltd Collision preventing device
US6046671A (en) * 1995-03-30 2000-04-04 Sumitomo Electric Industries, Ltd. Apparatus for assisting driver in carefully driving
JP2001051057A (en) * 1999-08-06 2001-02-23 Matsushita Electric Works Ltd Obstacle detection system for vehicle
JP2007272487A (en) * 2006-03-31 2007-10-18 Tcm Corp Relative position recognition system in work area
JP2011031825A (en) * 2009-08-05 2011-02-17 Denso Corp Vehicle presence informing device
US8248273B2 (en) 2009-08-05 2012-08-21 Denso Corporation Vehicle presence alert apparatus
JP2023532862A (en) * 2020-07-08 2023-08-01 エンドマグネティクス リミテッド Systems and methods for detecting markers for surgical guidance

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