Application Solution for AC/DC Power Measurement Instrument

I. Industry Background:

The AC/DC power meter is a widely used measurement device mainly for measuring AC and DC electrical parameters. It is generally 

applicable to harsh industrial field type tests, high-temperature aging room tests, standby power measurement of household and 

commercial appliance production lines, power tool tests, and lighting fixture tests.

In recent years, with the rapid development of emerging industries such as new energy and electric vehicles, the application fields of 

AC/DC power meters will be further expanded. For example, in the new energy field, AC/DC power meters can be used to evaluate the 

performanceand efficiency of new energy equipment such as photovoltaic and wind power; in the electric vehicle field, AC/DC power 

meters can be used to test the charging performance and battery management system of electric vehicles. Improving the performance 

of AC/DC universal wide-range design, reliability, stability, and measurement speed is essential. 

II. Industry Pain Points:

Electronic devices are becoming increasingly prevalent in people's lives. As a commonly used electronic device testing instrument, AC/DC 

power meters have a very broad application prospect. AC/DC power meters have a very broad application prospect in power systems, 

electronic engineering fields, and automation fields. DC power meters can help engineers and technicians analyze and debug equipment 

to ensure its normal operation.

At the same time, with the rapid development of power electronics technology, the measurement accuracy requirements for AC/DC power 

meters are getting higher and higher. Future AC/DC power meters will focus on improving measurement accuracy to meet higher testing 

requirements.

In recent years, the rapid development of emerging industries such as new energy and electric vehicles has further expanded the application 

fields of AC/DC power meters. For example, in the new energy field, AC/DC power meters can be used to evaluate the performance and 

efficiency of new energy equipment such as photovoltaic and wind power; in the electric vehicle field, AC/DC power meters can be used to 

test the charging performance and battery management system of electric vehicles. 

III. Solution:

The RJ8921P AC/DC Power Measuring Instrument (referred to as the measuring instrument) takes the ARM7 series controller as its core 

and adopts direct sampling and intelligent discrimination technology. It is widely used in the measurement of electrical parameters 

such as voltage,current, power, power factor, frequency, electrical energy, and time of single-phase electrical equipment. It has a wide 

measurement range,features three-window LED high-brightness display, and simple and quick key operation. Meanwhile, it is equipped 

with functions such as serial communication, parameter alarm, and voltage/current ratio setting. It is characterized by multi-functionality 

in one device, high precision and durability.