SU1677647A1 - Apparatus for remote measuring of electric loading - Google Patents

Abstract

The invention relates to electrical measuring equipment and can be used to determine the average value of reactive power or the amount of transmitted electric power in electrical networks. The purpose of the invention is to increase the reliability of measuring the electrical load when operating in a circuit with a varying direction of power flow. The goal is achieved by introducing an element 10, amplifier 18, pulse generator 17, illuminators 3, 4. The set of signals from the device unambiguously determine the position of the counter disk and the direction of its rotation, which allows reliably measuring the number of disk turns in any operation mode. when changing the direction of its rotation in the zone of action of photo sensors. The device also contains an electricity meter 1, on the surface of the disk 2 of which light-absorbing and reflective marks are applied, photosensors 5, 6, threshold elements 7, 8. switch 9, pulse formers 11, 12. pulse selectors 13, 14 and indicators 15, 16. Device it is most expedient to use it as part of automated information-measuring systems for controlling the flow of active or reactive energy. 1 hp ff, 2 ill.

Description

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FIG. 2

Claims (2)

Claim 1. A device for remote measurement of electric load, comprising an electric meter and two photosensors optically coupled to the meter disk. on which light-absorbing and reflective marks, two threshold elements, a switch, two shapers, pulses and two pulse selectors are applied, the outputs of which are connected to the inputs of the indicators, the outputs of the first and second photosensors through the first inputs of the corresponding threshold elements connected to the first and second inputs of the switch, the first and second outputs of which are connected respectively to the inputs of the first and second pulse shapers, the outputs of which through a communication line are connected to the inputs of the first and second pulse generators, characterized in that, in order to increase the reliability of measuring the electrical load when working in a circuit with a changing direction of the power flow, two additional illuminators, a generator, an amplifier, an And element, the inputs of which are connected to the outputs of the first and second threshold elements, are additionally introduced into it, and the output is with the reset input of the switch, the input of the amplifier is connected to the output of the generator and with the gate inputs of the threshold elements, and the output. - with illuminator inputs, optically. associated with the surface of the disk, and the length of the label on the disk of the energy meter exceeds the distance between the photosensors. 2. The device according to claim 1, exemplary. I mean that the switch contains two! K-flip-flops, an OR element and two AND elements, the first input of the switch connected to the first inputs of the OR element and the second element AND, the input I of the first and input K of the second triggers, the second input of the switch connected to the second input OR element, the first input of the third AND element, input K of the first input I of the second triggers, the output of the OR element is connected to the sync inputs of the first and second triggers, the second inputs of the second and third elements AND are connected to the outputs of the second and first triggers but, as the switch outputs are the outputs, setting inputs of flip-flops combined with the effluent input switch. “_Л__П_П__П_П — п_ __P — .P ... π 0 Jql —M. IN 2JU1 ____ G “J ^J 1 g 1 __________ J --------- d e P Figure 2