JPS57125859A - System for detecting position of moving material - Google Patents

System for detecting position of moving material

Info

Publication number
JPS57125859A
JPS57125859A JP56012023A JP1202381A JPS57125859A JP S57125859 A JPS57125859 A JP S57125859A JP 56012023 A JP56012023 A JP 56012023A JP 1202381 A JP1202381 A JP 1202381A JP S57125859 A JPS57125859 A JP S57125859A
Authority
JP
Japan
Prior art keywords
circuits
voltages
detecting
moving material
adding circuit
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.)
Granted
Application number
JP56012023A
Other languages
Japanese (ja)
Other versions
JPS6332155B2 (en
Inventor
Tatsu Hatta
Tai Kusakabe
Fumiki Sone
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP56012023A priority Critical patent/JPS57125859A/en
Publication of JPS57125859A publication Critical patent/JPS57125859A/en
Publication of JPS6332155B2 publication Critical patent/JPS6332155B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/026—Relative localisation, e.g. using odometer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PURPOSE:To eliminate the position detection error due to the difference of a phase constant, by detecting the position of a moving material only on a basis of amplitude information of the envelop of a voltage induced between respective conductors. CONSTITUTION:Voltages induced among conductors 1, 2, and 3 of an inductive radio line pass through buffer amplifiers 7a, 7b, and 7c and have noise voltages eliminated by filters 8a, 8b, and 8c, and output voltages of square-low detecting circuits 9a, 9b, and 9c are subtracted from these voltages by circuits 10a, 10b, and 10c. The carrier from a power source 14 is modulated by circuits 11a, 11b, and 11c, and the output of the circuit 11a is inputted to an adding circuit 13 as it is, and outputs of circuits 11b and 11c have phases shifted by +120 deg. and -120 deg. by circuits 12b and 12c respectively and are inputted to the adding circuit 13. An antiphase voltage is outputted from the adding circuit, and the phase differece between the carrier and the antiphase voltage is operated by a phase meter 15, thereby detecting the position of moving material.
JP56012023A 1981-01-29 1981-01-29 System for detecting position of moving material Granted JPS57125859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012023A JPS57125859A (en) 1981-01-29 1981-01-29 System for detecting position of moving material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012023A JPS57125859A (en) 1981-01-29 1981-01-29 System for detecting position of moving material

Publications (2)

Publication Number Publication Date
JPS57125859A true JPS57125859A (en) 1982-08-05
JPS6332155B2 JPS6332155B2 (en) 1988-06-28

Family

ID=11793997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012023A Granted JPS57125859A (en) 1981-01-29 1981-01-29 System for detecting position of moving material

Country Status (1)

Country Link
JP (1) JPS57125859A (en)

Also Published As

Publication number Publication date
JPS6332155B2 (en) 1988-06-28

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