GB2020034A - Speedometer test equipment - Google Patents

Speedometer test equipment

Info

Publication number
GB2020034A
GB2020034A GB7910656A GB7910656A GB2020034A GB 2020034 A GB2020034 A GB 2020034A GB 7910656 A GB7910656 A GB 7910656A GB 7910656 A GB7910656 A GB 7910656A GB 2020034 A GB2020034 A GB 2020034A
Authority
GB
United Kingdom
Prior art keywords
speedometer
leads
switch
amplifiers
pair
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.)
Withdrawn
Application number
GB7910656A
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.)
LONDON TRANSPORT EXECUTIVE
Original Assignee
LONDON TRANSPORT EXECUTIVE
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 LONDON TRANSPORT EXECUTIVE filed Critical LONDON TRANSPORT EXECUTIVE
Publication of GB2020034A publication Critical patent/GB2020034A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Electronic Circuits (AREA)

Abstract

Vehicle speedometer test apparatus includes a speedometer test switch (SW1) having a battery testing contact position in a switching circuit connected to one input of a Wien bridge oscillator 1, first and second multi-pole, multi-way switches S2, S1 having the contacts and wipers of the various stages interconnected and connected between the oscillator and a pair of amplifiers 2, 6 and to a pair of test circuit output leads 5, 7 one of which 5 is connected to one input of one amplifier 6 and the second of which 7 is connected to a junction between the two amplifiers 2, 6. In use the leads 5, 7 are connected to a speedometer, switch S1 is actuated to provide on leads 5, 7 signals requesting speed in 10 m.p.h. increments, and the speedometer reading is checked against the speed requested by the switch settings. <IMAGE>
GB7910656A 1978-04-25 1979-03-27 Speedometer test equipment Withdrawn GB2020034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1637578 1978-04-25

Publications (1)

Publication Number Publication Date
GB2020034A true GB2020034A (en) 1979-11-07

Family

ID=10076192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7910656A Withdrawn GB2020034A (en) 1978-04-25 1979-03-27 Speedometer test equipment

Country Status (1)

Country Link
GB (1) GB2020034A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505066A1 (en) * 1981-04-06 1982-11-05 Weinert E Messgeraetewerk METHOD AND DEVICE FOR VERIFYING ROAD RECORDERS
FR2583187A1 (en) * 1985-06-07 1986-12-12 Gaso Philippe Programmable automatic unit serving for testing timing tachographs
US5027640A (en) * 1989-11-14 1991-07-02 Hugh D. Hinckley Speedometer/odometer/cruise control tester and related methods
US5040407A (en) * 1989-11-14 1991-08-20 Hugh D. Hinckley Speedometer/odometer/cruise control tester and related methods

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505066A1 (en) * 1981-04-06 1982-11-05 Weinert E Messgeraetewerk METHOD AND DEVICE FOR VERIFYING ROAD RECORDERS
FR2583187A1 (en) * 1985-06-07 1986-12-12 Gaso Philippe Programmable automatic unit serving for testing timing tachographs
US5027640A (en) * 1989-11-14 1991-07-02 Hugh D. Hinckley Speedometer/odometer/cruise control tester and related methods
US5040407A (en) * 1989-11-14 1991-08-20 Hugh D. Hinckley Speedometer/odometer/cruise control tester and related methods

Similar Documents

Publication Publication Date Title
KR900004218A (en) Center mode control circuit
CH618568GA3 (en)
FR2275900A1 (en) PERFECTED SWITCH FOR THE TRANSMISSION OF TELEVISION SIGNALS, ENSURING AN IMPORTANT ISOLATION BETWEEN ITS INPUT TERMINALS
SE8005409L (en) LINE UNIT FOR CONNECTING AN ANALOGUE LINE WITH A DIGITAL TELECOMMUNICATION EQUIPMENT
GB2020034A (en) Speedometer test equipment
JPS5551361A (en) Range switching device for electric measuring instrument
SE8105183L (en) ELECTRONIC ANALOG SWITCHING DEVICE
ATE156948T1 (en) SOLID CONDUCTOR RELAY
DE3782056D1 (en) OVERCURRENT DETECTOR AND CIRCUIT BREAKER.
JPS54133061A (en) Current switch circuit
JPS566530A (en) Multiinput analog switch circuit
SU642723A1 (en) Arrangement for squaring function integral
ATE84376T1 (en) TEST UNIT FOR ELECTRICAL DIFFERENTIAL PROTECTION APPARATUS AND APPARATUS WITH THIS UNIT.
JPS57194629A (en) Pin diode switch
JPS57203296A (en) Sample holding circuit
SU681344A1 (en) Bench with a closed power circuit for testing transmission of vehicles
NO851591L (en) CONNECTION STEP TO AA CONNECT A SIGNAL PROCESSING DEVICE TO A TRANSMISSION LINE.
JPS57139802A (en) Switching device
SU619979A1 (en) Electric circuits switch
JPS578411A (en) Testing system
JPS56137332A (en) Optical not circuit
JPS54145468A (en) Three-input switching circuit
ES447434A1 (en) Electronic switch apparatus for remote operation
ES488456A1 (en) Controlled voltage source variable equalization network
JPS6468107A (en) Phase detection circuit

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)