GB1394145A - Monitoring travel of vehicles - Google Patents

Monitoring travel of vehicles

Info

Publication number
GB1394145A
GB1394145A GB3885873A GB3885873A GB1394145A GB 1394145 A GB1394145 A GB 1394145A GB 3885873 A GB3885873 A GB 3885873A GB 3885873 A GB3885873 A GB 3885873A GB 1394145 A GB1394145 A GB 1394145A
Authority
GB
United Kingdom
Prior art keywords
disc
detector
travel
generator
signal
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
GB3885873A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1394145A publication Critical patent/GB1394145A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

1394145 Monitoring travel of vehicle SIEMENS AG 16 Aug 1973 [18 Aug 1972] 38858/73 Heading G1A The travel and speed of a vehicle is monitored by photo-electrically sensing rotation of a chopper disc, driven by the vehicle wheel, the disc comprising sections which affect the light reaching the detector to differing degrees but always providing a level of detector output. Thus in Fig. 1, the chopper disc 5 is of partially transparent material and is toothed or perforated. The light emitting diode is pulsed by generator 2 at high frequency and a filter capacitor 3 is provided in the phototransistor 7 output circuit and the generator input to prevent feedback to the latter. The signal delivered to high pass filter 8 comprises an A.C. signal modulated at high frequency in accordance with source 4 modulation, and changing, from a high amplitude level representative of direct light reaching the detector to a low level representing partially absorbed light, at the frequency dependent on the speed of rotation of the chopper disc, which is itself dependent on the speed of vehicle travel. The pulse shaper 10 delivers signals to travel measuring device 11 e.g. a counter and speed measuring device 12. If the chopper disc stops, the signal remains at the high or the low level of high frequency modulated signal. If the lamp, generator or connection L 1 , L 2 etc, fails, the signal level drops below a pre-set threshold in 9 and an alarm is actuated. Instead of filter 8 a transformer may be provided. In a second embodiment, Fig. 2 (not shown) the source is of constant intensity and the phototransistor forms part of a squarewave generator, including a trigger diode (and a charging capacitor) or alternatively a double base diode, which provides alternate higher and lower repetition rate pulse signals for the respective parts of the disc. A band pass filter 16 can pass both signals to alarm and measurement circuits as in Fig. 1. A reflective chopper disc having alternate sections of high and low reflectivities may alternatively be used. The detector may alternatively be a photo-resistor. Direction of movement may be indicated by having a further source and detector monitoring a different part of the disc path.
GB3885873A 1972-08-18 1973-08-16 Monitoring travel of vehicles Expired GB1394145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722240757 DE2240757A1 (en) 1972-08-18 1972-08-18 DEVICE FOR TRAVEL AND SPEED MEASUREMENT ON RAIL VEHICLES

Publications (1)

Publication Number Publication Date
GB1394145A true GB1394145A (en) 1975-05-14

Family

ID=5853958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3885873A Expired GB1394145A (en) 1972-08-18 1973-08-16 Monitoring travel of vehicles

Country Status (6)

Country Link
BE (1) BE803645A (en)
CH (1) CH552789A (en)
DE (1) DE2240757A1 (en)
FR (1) FR2196459B1 (en)
GB (1) GB1394145A (en)
NL (1) NL7310070A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135453A (en) * 1983-02-22 1984-08-30 Mitutoyo Mfg Co Ltd Detecting malfunction of measuring apparatus
GB2241324A (en) * 1989-11-10 1991-08-28 Asahi Optical Co Ltd Photo-interrupter
CN113970652A (en) * 2021-10-20 2022-01-25 陕西鼎泰光宇科技有限公司 Laser sensing simulation speed measurement method and system, computer equipment, terminal and medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113086801B (en) * 2021-05-18 2021-11-30 华鼎世纪（北京）国际科技有限公司 Elevator data acquisition and transmission method, terminal and storage medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950096C (en) * 1954-09-19 1956-10-04 Licentia Patent Verwalungs G M Process for the photoelectric detection of speeds and speed differences
US3559065A (en) * 1968-10-01 1971-01-26 Westinghouse Air Brake Co Photoelectric velocity indicator with zero speed detection capability

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135453A (en) * 1983-02-22 1984-08-30 Mitutoyo Mfg Co Ltd Detecting malfunction of measuring apparatus
GB2241324A (en) * 1989-11-10 1991-08-28 Asahi Optical Co Ltd Photo-interrupter
CN113970652A (en) * 2021-10-20 2022-01-25 陕西鼎泰光宇科技有限公司 Laser sensing simulation speed measurement method and system, computer equipment, terminal and medium
CN113970652B (en) * 2021-10-20 2024-05-28 陕西鼎泰光宇科技有限公司 Laser sensing simulation speed measuring method, system, computer equipment, terminal and medium

Also Published As

Publication number Publication date
FR2196459A1 (en) 1974-03-15
NL7310070A (en) 1974-02-20
BE803645A (en) 1974-02-18
CH552789A (en) 1974-08-15
DE2240757A1 (en) 1974-03-14
FR2196459B1 (en) 1976-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees