GB1063442A - Reflected-wave identifying system and method - Google Patents

Reflected-wave identifying system and method

Info

Publication number
GB1063442A
GB1063442A GB10330/64A GB1033064A GB1063442A GB 1063442 A GB1063442 A GB 1063442A GB 10330/64 A GB10330/64 A GB 10330/64A GB 1033064 A GB1033064 A GB 1033064A GB 1063442 A GB1063442 A GB 1063442A
Authority
GB
United Kingdom
Prior art keywords
reflectors
lamp
vehicle
value
reflector
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.)
Expired
Application number
GB10330/64A
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.)
LAN JEN CHU
Original Assignee
LAN JEN CHU
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 LAN JEN CHU filed Critical LAN JEN CHU
Publication of GB1063442A publication Critical patent/GB1063442A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/74—Systems using reradiation of electromagnetic waves other than radio waves, e.g. IFF, i.e. identification of friend or foe
    • 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
    • B61L25/04—Indicating or recording train identities
    • 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
    • B61L25/04—Indicating or recording train identities
    • B61L25/041—Indicating or recording train identities using reflecting tags

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Traffic Control Systems (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1,063,442. Track apparatus. L. J. CHU. March 11, 1964 [May 1, 1963], No. 10330/64. Heading B7N. [Also in Division G4] A code plate to be mounted on a railway vehicle to identify the vehicle comprises planar reflectors (6, 8, 10, 14, 16, Fig. 1, not shown) adapted to receive and reflect radiant energy, the reflectors being of two sorts, set respectively in planes which intersect and which are at equal and opposite angles (about 30 degrees) to a common plane, there being one or more detectors (20, 20<SP>1</SP>) adapted to receive energy from a reflector along a line in the plane of the other sort of reflector. The reflectors receive infra-red light from a lamp (18) which is flashed as the vehicle passes a reading station at the correct instants to sense the successive reflectors. The detectors (20 and 20<SP>1</SP>) give " 1 " and " 0 " signals respectively. The synchronizer (30) which produces trigger pulses for lamp (18) measures the speed of the vehicle from a lead-in portion of the code plate consisting of four reflectors having values " 1," " 0," " 1 " and " 0." During the interval between the trailing edge of the first " 1 " signal and the trailing edge of the second " 1 " fast clock pulses are entered into a counter. This distance is twice the pitch of the reflector plates. The value reached by the counter is transferred to a store with a shift of one place so that the value is halved, giving a number corresponding to the pitch of the reflector plates. This value is then counted down to zero and at zero a pulse is emitted to flash the lamp (18). At the same time the value in the counter is again transferred to the store and counting down begins again. The fourth plate of the lead-in portion has a width half again that of the other plates so that the flash pulses coincide with the middle of subsequent reflectors. The lamp is triggered to sense the lead-in portion of the code plate by an inductive device which responds to the presence of a wheel of the vehicle.
GB10330/64A 1963-05-01 1964-03-11 Reflected-wave identifying system and method Expired GB1063442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US277387A US3324283A (en) 1963-05-01 1963-05-01 Analog multiplier with ratio indicating means

Publications (1)

Publication Number Publication Date
GB1063442A true GB1063442A (en) 1967-03-30

Family

ID=23060637

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10330/64A Expired GB1063442A (en) 1963-05-01 1964-03-11 Reflected-wave identifying system and method

Country Status (3)

Country Link
US (1) US3324283A (en)
DE (2) DE1774445A1 (en)
GB (1) GB1063442A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219881A (en) * 1988-06-15 1989-12-20 English Electric Valve Co Ltd Vehicle monitoring system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194126A (en) * 1978-03-06 1980-03-18 Hall & Myers Escort memory using mirrors
EP0227999B1 (en) * 1985-12-16 1993-06-09 Namco Controls Corporation target determining apparatus
US5046841A (en) * 1989-01-19 1991-09-10 Idx, Inc. Token having a predetermined optical characteristic, and a token validation device for use therewith

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1966354A (en) * 1932-12-22 1934-07-10 Western Union Telegraph Co High speed telegraph system
US2853158A (en) * 1956-07-13 1958-09-23 Elevator Construction & Servic Closure control mechanism
US2956117A (en) * 1958-06-27 1960-10-11 Stewart Warner Corp Telefilm freight car identification system
US3180996A (en) * 1962-12-26 1965-04-27 Rapids Standard Co Inc Photosensitive digital director device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219881A (en) * 1988-06-15 1989-12-20 English Electric Valve Co Ltd Vehicle monitoring system

Also Published As

Publication number Publication date
US3324283A (en) 1967-06-06
DE1294724B (en) 1969-05-08
DE1774445A1 (en) 1971-06-16

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