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Optical fiber current sensor intelligent electric meter

A fiber optic sensor, smart meter technology, applied in the measurement of current/voltage, instrument, measurement of electrical variables, etc., can solve the problems of signal weakening, small Faraday rotation angle phase offset, and unstable signal, and achieve voltage sampling balance , light weight, and the output is easier to digitize

Inactive Publication Date: 2015-08-12
JIANGYIN ZHONGHE POWER METER
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AI Technical Summary

Problems solved by technology

[0007] The measurement of the Faraday rotation angle and phase of the optical fiber is still insufficient in the application of low-cost and small current sensors. The main reason is that the measured Faraday rotation angle and phase offset is small and the signal is weakened. In addition, the drift temperature causes the signal to be unstable. one question

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  • Optical fiber current sensor intelligent electric meter
  • Optical fiber current sensor intelligent electric meter

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Embodiment Construction

[0015] figure 1 In the block diagram, the optical fiber current sensor smart meter includes a small current fiber optic sensor for the meter, an integrating circuit, an analog-to-digital conversion circuit, a clock circuit, an electric energy metering chip, a memory, an RS485 communication circuit, and a CPU. The small current fiber optic sensor is connected to the integrating circuit, Analog-to-digital conversion circuit, electric energy metering chip and CPU, CPU is connected to clock circuit, memory and RS485 communication circuit at the same time, CPU is used to control the conversion or Exchange; the memory is used to store the power consumption information obtained by the CPU, convert or exchange information. The metering ASIC chip is a commonly used chip, and the MCU is also connected to an infrared interface, a pulse indicator light, and can also output relay control. There is also an ESAM chip, that is, the embedded safety control module is essentially a CPU card chi...

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Abstract

The invention discloses an optical fiber current sensor intelligent electric meter, and the electric meter comprises a small current optical fiber sensor for an electric meter, an integral circuit, an analog-digital conversion circuit, a clock circuit, an electric energy metering chip, a storage unit, an RS485 communication circuit, and a CPU. The small current optical fiber sensor is sequentially connected with the integral circuit, the analog-digital conversion circuit, the electric energy metering chip and the CPU. The CPU is connected with the clock circuit, the storage unit and the RS485 communication circuit at the same time. The CPU is used for controlling the information conversion or exchange among the analog-digital conversion circuit, the clock circuit, the electric energy metering chip, the RS485 communication circuit and a display. The storage unit is used for storing electric quantity information and conversion or exchange information obtained by the CPU.

Description

technical field [0001] The invention relates to a power metering device, in particular to an optical fiber current sensor smart meter. Background technique [0002] Smart meters have disclosed many technologies, such as CN201410360178 smart meters, including: analog-to-digital conversion components, clock components, energy metering components, RS485 communication components, infrared communication components and carrier / micropower wireless communication components and main control components, etc., the main control Components, used to accumulate, analyze, count and store the statistical information of electric energy metering elements, and also used to control analog-to-digital conversion elements, clock elements, electric energy metering elements, RS485 communication elements, infrared communication elements, carrier / micropower wireless communication The conversion or exchange of information between components and liquid crystal displays; the memory is used to store the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/00G01R19/00
Inventor 张建春王刚
Owner JIANGYIN ZHONGHE POWER METER
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