SU1456787A1 - Device for remote measurement of consumption of electric power - Google Patents

Abstract

The invention relates to devices for measuring energy consumption and can be used in remote measurement devices. The purpose of the invention is to simplify; devices - achieved by switching off the power supply and measuring circuit. The device works as follows. At each revolutions of the disk 1 having openings, a light pulse arrives at the photosensor 3 from source 2. The output signal of the sensor 3 at the same time switches the trigger 4, the output of which triggers the one-shot 5. The signal from the output of the single-vibrator opens the key 6, opening for a time equal to the pulse duration the main current consumer is the source 2 of light. The current in the power supply circuit included in the registering unit 7 decreases in a pulsed manner, which is recorded as the next turn of the induction counter disk 1. The communication line 8 is used both to power the circuit elements and to transmit the signal to the recording unit 7, which allows to simplify the device. 1 hp f-ly, 2 ill. S (C (L 4 SP 0) 3 h

Description

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Fig, 1

This invention relates to electrical measurements and can be used to measure electrical energy consumption.

The purpose of the invention is to simplify the device by eliminating the power source of the measuring circuit.

Fig. 1 shows the scheme of the proposed device; FIG. 2 is a diagram of the device with an increased amplitude of the recorded signal.

The device contains a disk 1 (with a reflecting label on it) of an induction electric meter, a light source 2, a photo sensor 3, a trigger 4, a single vibrator 5, a key 6, a recording unit 7 and a link 8 and the light source 2 is optically coupled to the photo sensor 3 via a siggo - a reject mark, disk 1, photo sensor 3 output is connected to the first input of trigger 4, the second input of which is connected to the source of the Reset signal (not shown), and its output is connected to the control input of the key 6 via a single vibrator 1.5 The power bus of the light source 2 is connected to the inlet. House Serial Compound 7 kyyucha recording unit 6 and the communication line 8, and a power bus photosensor 3, 4 and the monostable flip-flop 5 connected to the input of the recording unit 7 through line 8 Referring communication.

The power supply bus of the photo sensor 3 (FIG. 2 is connected to the power bus of the light source 2.

The device works as follows.

At each turn of the disk 1 induction of the electric meter to the photodata 3 from the source 2 of the light enters - a light pulse. The output of the photosensor 3 in this case flips the trigger 4, the output of which triggers the one-oscillator 5, which by its output impulse opens the key 6, disconnecting for a time equal to the duration of the impulse the main current consumer is the light source-2 , shown in FIG. 2), the current in the power supply circuit included in the registering unit 7 decreases in a pulsed manner, which is also registered as the next turn of the drive 1 of the induction meter.

After each trigger

This trigger 4 is reset with a Reset signal to its second input. The signal source Reset can serve as the second optocoupler (light source - photo sensor),

When disconnecting simultaneously with the source (by the point 2 of the light of the photo sensor 3, the amplitude of the recorded signal increases by the amount of current consumed by the photo sensor 3, which increases the noise immunity of the device.

The use of link 8, both for powering the elements of the measuring circuit and for transmitting the signal to the recording unit 7, allows

It appears from the special power supply of the elements of the measuring circuit and, consequently, to simplify the device.

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Claims (2)

1, A device for remote measurement of electrical energy consumption, containing an inductive electric meter with a rotating disk, a light source, a photo sensor, a trigger, a communication line, a key and a recording unit, the light source and the photo sensor being optically connected through the reflecting surface of the electric meter of the induction meter with a marked mark on it , one trigger input is connected to photo output (r © sensor, the other is from the source of the Reset command, the first key output is connected to the input of the registering unit through the communication line, characterized in that To simplify the device, a one-shot is entered into it, the input of which is connected to the trigger output, and the output is connected to: the control input of the key, the first WY of which is connected to the photosensor power supply, the trigger and the single-vibration device, and the second output is connected to the power bus light source 2. A device according to claim 1, characterized in that, in order to increase the amplitude of the transmitted signal, the photosensor power bus is connected to the second output of the key. w / H n reset FIG. g