Device for measuring the distance travelled and the speed of a r

Details Device for measuring the distance travelled and the speed of a r Device for measuring the distance travelled and the speed of a r

1986-10-09

1990-05-01

Lall, Parshotam S.

Boots, shoes, and leggings

364565, 377 9, 377 19, G01C 2262, G01P 354, B60T 832

Patent

active

049224476

ABSTRACT:
A device for measuring the distance travelled by and the speed of a rail vehicle fitted with wheel-coupled distance-pulse generators is disclosed in which both distance and speed are calculated from the time distance between successive distance pulses, and in which the change in wheel diameter due to wheel wear is already taken into account in the measurement of the time distance between the distance pulses (distance-pulse intervals). To measure the distance-pulse intervals, clock pulses of reduced repetition rate are counted which are obtained by dividing basic clock pulses of high repetition rate in an adjustment divider (T1). The wheel diameter is taken into account by changing the division ratio of the adjustable divider by means of a coding switch (S1).

REFERENCES:
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patent: 4371935 (1983-02-01), Yamaki
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H. Uebel et al, "Geschwindigkeits-und Wegmessung fur LZB-Fahrseuge", Eisenbahntechnische Rundschau, vol. 32, No. 1/2, pp. 63-66 (1983).

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