| 摘要 |
<p>1. Pricing apparatus for electrical energy supplied to a store (19) of an electrically propelled vehicle (17) at transfer stations, in which, with the aid of an electricity meter (1), a sequence of pricing pulses proportional to the quantity fo electricity supplied is registered in a pulse counter, having an integral control unit which firstly cooperates with a comparator stage (9, 10, 11) to monitor two pulse sequences of the same frequency which are produced in a double pulse generator (1a, 1b) of the electricity meter (1) and which are re-weighted in an evaluation stage (7, 8) to give one pulse per monetary unit, and which secondly serves to monitor the connected external pricing circuit taking account of the charging device (4), characterized in that the evaluation stage comprises a series connection of an N1 /N2 divider (7) as predivider, which serves for determining the measurement base and in which the numerator and denominator can run through a specific range of natural numbers, and a programmable 100:x divider (8), the later being connected as a rate multiplier and being preferably settable decadically so that the output pulses have a value equivalent to one pulse per monetary unit, and that the external pricing circuit is controlled by a continuously pulsed impedance measurement so that the effect of the measurement in each case appears in the gaps between the counting pulses, the latter being fed, via a synchronising stage (23) operating in conjunction with a clock pulse generator (26), to one (22a) of two inputs (22a, 22b) of an AND-gate (22), wherein the decoupled output (22c) of the latter is connectible to the operating voltage (UB ) via a steady-state-current-impedence (28), and also is connected to the input (27a) of a window discriminator (27) of which the output is applied to the D-input of a D-bistable (25), the clock input (25b) thereof being acted upon by the clock generator and the output (25a) acting via an inverter member on the second input (22b) of the AND-gate (22).</p> |
