JPS56135352A - Collision alarm system - Google Patents
Collision alarm systemInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS541544A (en) * | 1977-06-06 | 1979-01-08 | Yukio Iwata | Safe traffic method and its device |
-
1980
- 1980-03-24 JP JP3810380A patent/JPS56135352A/en active Pending
Patent Citations (1)
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)
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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