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A kind of DC power meter with can communication function

A CAN communication and electricity metering technology, applied in the field of DC power meters, can solve the problems of no remote communication function, no local storage, no multi-meter networking communication, etc.

Inactive Publication Date: 2016-01-13
ZHEJIANG WATER CONSERVANCY & HYDROPOWER COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many DC power meters do not have the capability of local storage, and the power data can only be continuously accumulated and displayed in real time; and at present, many DC power meters do not have remote communication functions, and can only rely on local display to read data, let alone multiple Capability of table networking communication

Method used

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  • A kind of DC power meter with can communication function
  • A kind of DC power meter with can communication function
  • A kind of DC power meter with can communication function

Examples

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Embodiment Construction

[0019] The purpose of the present invention is to provide a DC power meter that can acquire DC voltage, DC current, DC power and electric energy measurement data by means of remote CAN communication, and has the ability of local data storage and real-time display.

[0020] Such as figure 1 As shown, the present invention includes a power supply circuit 1 , a power metering circuit 2 , a CAN communication circuit 3 , a main control circuit 4 and an LCD display circuit 5 .

[0021] Such as figure 2 As shown, the power supply circuit 1 includes a primary power conversion chip IC1, a secondary power conversion chip IC2, a first diode D1, four electrolytic capacitors C2, C4, C6 and C8, four ceramic capacitors C1, C3, C5 and C7. The first pin of the primary power conversion chip IC1 is connected to the cathode of the first diode D1, and the anode of the first diode D1 is connected to the external +12V; the first pin of the primary power conversion chip IC1 is connected to the ele...

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PUM

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Abstract

The invention relates to a direct current electric quantity meter with a CAN communication function. The direct current electric quantity meter with the CAN communication function comprises a power supply circuit, a power metering circuit, a CAN communication circuit, a master control circuit and an LCD display circuit. The power supply circuit comprises a first-level power supply changeover chip IC1, a second-level power supply changeover chip IC2 and a first diode D1. The power metering circuit comprises a power metering chip IC3. The CAN communication circuit comprises a first photoelectric coupler IC4, a second photoelectric coupler IC5 and a CAN communication control chip IC6. The master control circuit comprises a processor chip IC7 and a memory chip IC8. The LCD display circuit comprises a display driving chip IC9 and a third connector assembly J3. The direct current electric quantity meter has the functions of local data storage, local real-time display and remote CAN networking communication. In terms of CAN networking communication, the direct current electric quantity meter has stronger communication capability and higher reliability compared with some meters with the RS485 communication function at present.

Description

technical field [0001] The invention belongs to the technical field of electric quantity measurement, and in particular relates to a direct current power meter capable of acquiring direct current voltage, direct current, direct current power and electric energy metering data by means of remote CAN communication. Background technique [0002] AC electricity metering technology is very mature. Every household has an electricity meter, and AC voltage, current, power and electricity are counted all the time. As storage battery-powered facilities such as battery cars and electric vehicles continue to integrate into people's lives, DC metering technology is becoming more and more important. As an urgently needed technology, high-power DC metering has also been greatly developed. The current DC power meter can generally measure the values ​​of voltage, current, power, and electricity, and has the ability to display in real time. However, many DC power meters do not have the capab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R21/06G01R19/00
Inventor 张美燕蔡文郁陈丽莉万军朱凌峰许爱玮周丽萍刘吉来
Owner ZHEJIANG WATER CONSERVANCY & HYDROPOWER COLLEGE