JPH02175379A - Device for warning approach of train - Google Patents

Device for warning approach of train

Info

Publication number
JPH02175379A
JPH02175379A JP32896488A JP32896488A JPH02175379A JP H02175379 A JPH02175379 A JP H02175379A JP 32896488 A JP32896488 A JP 32896488A JP 32896488 A JP32896488 A JP 32896488A JP H02175379 A JPH02175379 A JP H02175379A
Authority
JP
Japan
Prior art keywords
train
sound wave
detecting
operating
approach
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
JP32896488A
Other languages
Japanese (ja)
Inventor
Yoshihiro Ohinata
Hiroshi Sasaki
Original Assignee
Mitsubishi Mining & Cement 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 Mitsubishi Mining & Cement Co Ltd filed Critical Mitsubishi Mining & Cement Co Ltd
Priority to JP32896488A priority Critical patent/JPH02175379A/en
Publication of JPH02175379A publication Critical patent/JPH02175379A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To surely notify of evacuation to a safe place by providing a detecting portion for detecting the approach of a train through the transmitting/receiving portions of a sound wave, transmitting a signal at the time of detecting the approach of the train and operating an alarm portion via a portable receiver carried by each way maintenance operators.
CONSTITUTION: Sound waves are always transmitted in the direction of approaching trains from the sound wave transmitter 2 of a detecting portion 1 and, when a train approaches to, e.g., approx. 10-50m, the sound wave reflected by the foremost portion of the train 7 is received by a receiver 3 and its frequency is measured. The frequency f0 of a transmitted sound wave and the frequency (f) of a received sound wave are inputted into an operating/amplifying portion 4 to recognized the existence of the approaching train and the approaching speed thereof. The output signal of this operating/amplifying portion 4 is transmitted toward a way maintenance operation zone 6 to be received by the portable receivers 8 carried by each operator, operating an alarm portion provided on the receiver 8 to generate a train approach alarm for a defined time.
COPYRIGHT: (C)1990,JPO&Japio
JP32896488A 1988-12-28 1988-12-28 Device for warning approach of train Pending JPH02175379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32896488A JPH02175379A (en) 1988-12-28 1988-12-28 Device for warning approach of train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32896488A JPH02175379A (en) 1988-12-28 1988-12-28 Device for warning approach of train

Publications (1)

Publication Number Publication Date
JPH02175379A true JPH02175379A (en) 1990-07-06

Family

ID=18216085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32896488A Pending JPH02175379A (en) 1988-12-28 1988-12-28 Device for warning approach of train

Country Status (1)

Country Link
JP (1) JPH02175379A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04126664A (en) * 1990-09-19 1992-04-27 Oki Electric Ind Co Ltd Train approach alarm system
JPH04189673A (en) * 1990-11-22 1992-07-08 East Japan Railway Co System for detecting position of specified train
JPH0537632U (en) * 1991-10-30 1993-05-21 建設塗装工業株式会社 Emergency call sensing device
JPH061239A (en) * 1991-07-23 1994-01-11 Toshin Sangyo Kk Train approach warning device
CN102756748A (en) * 2012-07-31 2012-10-31 上海中科高等研究院 Train anticollision system on basis of sound wave communication and anticollision method thereof
CN106585671A (en) * 2016-11-28 2017-04-26 西南交通大学 Train approaching alarming method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04126664A (en) * 1990-09-19 1992-04-27 Oki Electric Ind Co Ltd Train approach alarm system
JPH04189673A (en) * 1990-11-22 1992-07-08 East Japan Railway Co System for detecting position of specified train
JPH061239A (en) * 1991-07-23 1994-01-11 Toshin Sangyo Kk Train approach warning device
JPH0537632U (en) * 1991-10-30 1993-05-21 建設塗装工業株式会社 Emergency call sensing device
CN102756748A (en) * 2012-07-31 2012-10-31 上海中科高等研究院 Train anticollision system on basis of sound wave communication and anticollision method thereof
CN106585671A (en) * 2016-11-28 2017-04-26 西南交通大学 Train approaching alarming method

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