JPS5247699A - Detective device for car, etc. stopped in tunnel - Google Patents

Detective device for car, etc. stopped in tunnel

Info

Publication number
JPS5247699A
JPS5247699A JP50123999A JP12399975A JPS5247699A JP S5247699 A JPS5247699 A JP S5247699A JP 50123999 A JP50123999 A JP 50123999A JP 12399975 A JP12399975 A JP 12399975A JP S5247699 A JPS5247699 A JP S5247699A
Authority
JP
Japan
Prior art keywords
tunnel
car
stopped
detective device
detective
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
JP50123999A
Other languages
Japanese (ja)
Inventor
Mutsuo Fujiwara
Masanori Machida
Yasuhiro Tomita
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.)
SEIWA DENKI KK
Seiwa Electric Mfg Co Ltd
Original Assignee
SEIWA DENKI KK
Seiwa Electric Mfg 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 SEIWA DENKI KK, Seiwa Electric Mfg Co Ltd filed Critical SEIWA DENKI KK
Priority to JP50123999A priority Critical patent/JPS5247699A/en
Publication of JPS5247699A publication Critical patent/JPS5247699A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:In the detective device for by means of the passing through method of supersonic waves, the connection of each apparatus can be reasonably made in case one set of supersonic wave transmitting apparatus and receiving apparatus is arranged by a number of sets in the long tunnel.
JP50123999A 1975-10-14 1975-10-14 Detective device for car, etc. stopped in tunnel Pending JPS5247699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50123999A JPS5247699A (en) 1975-10-14 1975-10-14 Detective device for car, etc. stopped in tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50123999A JPS5247699A (en) 1975-10-14 1975-10-14 Detective device for car, etc. stopped in tunnel

Publications (1)

Publication Number Publication Date
JPS5247699A true JPS5247699A (en) 1977-04-15

Family

ID=14874521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50123999A Pending JPS5247699A (en) 1975-10-14 1975-10-14 Detective device for car, etc. stopped in tunnel

Country Status (1)

Country Link
JP (1) JPS5247699A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS649599A (en) * 1987-07-02 1989-01-12 Omron Tateisi Electronics Co System for detecting occurrence of accident

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113195A (en) * 1974-02-14 1975-09-05
JPS50115861A (en) * 1974-02-22 1975-09-10

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50113195A (en) * 1974-02-14 1975-09-05
JPS50115861A (en) * 1974-02-22 1975-09-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS649599A (en) * 1987-07-02 1989-01-12 Omron Tateisi Electronics Co System for detecting occurrence of accident

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