Functional electric meter in building elevator room

Abstract

The invention relates to a functional electric meter in a building elevator room. The functional electric meter includes a current transformer and sampling circuit, a voltage sampling circuit, a figure track analyzing device and a MSP430 one-chip microcomputer. The current transformer and sampling circuit is intended for sampling a current signal in an AC line. The voltage sampling circuit is intended for sampling a voltage signal in the AC line. The figure track analyzing device is intended for determining whether motion track of an object figure in the elevator room is suspicious. The MSP430 one-chip microcomputer is in separate connection to the current transformer and sampling circuit, the voltage sampling circuit and the figure track analyzing device, and is intended for determining active power and reactive power of an AC line on the basis of a sampled current signal and a sampled voltage signal, and is also intended for determining whether the object figure is a fugitive on the basis of the output of the figure track analyzing device. According to the invention, the functional electric meter can detect the electricity output by the AC line in an accurate manner and at the same time increase safety protection efficiency of the building.

Description

[0001] The present invention is a divisional application of a patent with the application number 2016101833153, the application date is March 28, 2016, and the invention name is "multifunctional watt-hour meter for building elevator room". technical field [0002] The invention relates to the field of wireless networks, in particular to a multifunctional watt-hour meter in a building elevator room. Background technique [0003] The working principle of the watt-hour meter is as follows: when the watt-hour meter is connected to the circuit under test, an alternating current flows through the current coil and the voltage coil, and the two alternating currents generate alternating currents in their iron cores respectively. The magnetic flux; the alternating magnetic flux passes through the aluminum disk, and an eddy current is induced in the aluminum disk; the eddy current is subjected to force in the magnetic field, so that the aluminum disk obtains torque (active torque) and r...

AI Technical Summary

Problems solved by technology

[0005] However, the design of the watt-hour meter in the prior art has certain limitations, because the watt-hour meter is usually placed in the public space, but it is not equipped with auxiliary function equipment to monitor the condition of the public space or realize other functions. The meter is only limited to the parameter measurement of the power line. Even so, the structure of the watt-hour meter in the prior art still has room for optimization and transformation. The detection efficiency of the watt-hour meter in the prior art is not high, and the detection accuracy still needs to be improved

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