JPS53119508A - Automatic radio alarm communication system - Google Patents

Automatic radio alarm communication system

Info

Publication number
JPS53119508A
JPS53119508A JP3373777A JP3373777A JPS53119508A JP S53119508 A JPS53119508 A JP S53119508A JP 3373777 A JP3373777 A JP 3373777A JP 3373777 A JP3373777 A JP 3373777A JP S53119508 A JPS53119508 A JP S53119508A
Authority
JP
Japan
Prior art keywords
communication system
alarm communication
radio alarm
automatic radio
crossing
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
JP3373777A
Other languages
Japanese (ja)
Inventor
Toru Fujisawa
Takeo Suzuki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3373777A priority Critical patent/JPS53119508A/en
Publication of JPS53119508A publication Critical patent/JPS53119508A/en
Pending legal-status Critical Current

Links

Landscapes

  • Train Traffic Observation, Control, And Security (AREA)

Abstract

PURPOSE: To transmit an emergency signal to a train approaching a crossing through a radio alarm communication system by detecting a vehicle or the like retained in the crossing after a train approaches the crossing.
COPYRIGHT: (C)1978,JPO&Japio
JP3373777A 1977-03-25 1977-03-25 Automatic radio alarm communication system Pending JPS53119508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3373777A JPS53119508A (en) 1977-03-25 1977-03-25 Automatic radio alarm communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3373777A JPS53119508A (en) 1977-03-25 1977-03-25 Automatic radio alarm communication system

Publications (1)

Publication Number Publication Date
JPS53119508A true JPS53119508A (en) 1978-10-19

Family

ID=12394708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3373777A Pending JPS53119508A (en) 1977-03-25 1977-03-25 Automatic radio alarm communication system

Country Status (1)

Country Link
JP (1) JPS53119508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02109773A (en) * 1988-10-19 1990-04-23 Railway Technical Res Inst Railroad crossing control method by wireless command

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02109773A (en) * 1988-10-19 1990-04-23 Railway Technical Res Inst Railroad crossing control method by wireless command

Similar Documents

Publication Publication Date Title
JPS53119508A (en) Automatic radio alarm communication system
JPS5362903A (en) Urgency signal transmission system
ES503158A0 (en) PROCEDURE FOR THE TRANSFORMATION OF SUBDIVIDED VOCAL SIGNALS, IN SIGNAL SEQUENCES, FOR CODED RETRANSMISSION.
JPS5333099A (en) Alarm device
JPS52140109A (en) Railway crossing alarm control system
JPS52116535A (en) Collision preventing device
JPS5429510A (en) Data communication system
JPS52134989A (en) Traffic-control sign control system
JPS522930A (en) Warning indicator system for vehicle
JPS541508A (en) Method of detecting position of car
JPS53111255A (en) Check system for interface control signal
JPS5277337A (en) Remote-controlled monitoring system for construction vehicles
JPS537015A (en) Train position monitoring system
JPS5436464A (en) Following vehicle aproach alarm device
JPS5266212A (en) System for continuously detecting train with inductive line
JPS5372507A (en) Radio communication system
JPS5222500A (en) Traffic signal transmission system for blind people
JPS5351905A (en) Loop communication system
JPS5422082A (en) Derailment preventive device of noman induced car
JPS53114632A (en) Data highway system
JPS5426700A (en) Control unit of traffic signal
JPS53102512A (en) Vehicle information transmitting and receiving system
JPS5412430A (en) Object detection control system
JPS53100509A (en) Alarm controlling method
JPS51118997A (en) Traffic signal