长延时采用计算电流真有效值，累计热效应判别。
Inverse time current protection is judged by calculating the RMS of current and adding up heating effect.
本文提出一种新的交变信号真有效值精度采样原理。
A new precise sampling principle of true effective value for the alternating signal is proposed in this paper.
介绍信号平方后积分平均技术实现交流信号真有效值测量原理；
The paper introduces the measurement of AC signal the true effective value based on the average integral of the signal square.
完整的发动机，发电机，水管和保护与3相真有效值交流传感。
Complete engine, generator, and mains protection with 3-phase true RMS AC sensing.
实验表明，该测量方法和检测电路能实现对任意高频信号真有效值的测量。
The experiment results prove that the proposed method and circuit can measure the true RMS of any high frequency signal accurately.
介绍了数字真有效值检波器的原理和性能并与其它真有效值检波器做了对比。
Digital RMS detectors principle and character are introduced in this paper, and compare with analogue RMS detector.
介绍了一种基于单片机和测量电压真有效值方案设计的智能数字交流毫伏表。
This paper introduces a kind of intelligent digital AC millivoltmeter that is based on the chip microcomputer and the design of voltage's real virtual value measuring.
本文介绍几种真有效值交直流转换的方法，并对各种方法的优缺点进行了比较。
In this paper several methods of the true RMS AC-DC conversion are exemplified, and the advantages of various methods are compared.
本文介绍了一种基于单片机和测量电压真有效值方案设计的智能数字交流毫伏表。
This paper introduces a kind of Intelligent Digital AC Millivoltmeter that is based on the Signal-chip Microcomputer and the design of voltage's real virtual value measuring.
它可为不同时速的A/D转换系统确定逼近真有效值的精度采样频率和采样个数。
It can precisely define sampling frequency and sampling amount of true effective value of approaching signal for A/D conversion system at different speed.
介绍用高性能CS5460A设计数字真有效值电参数测试仪的原理、方法，给出了部分电路。
The principle and method of design of a digital TRMS electrical parameter test instrumentation by use of high performance CS5460A were introduced, its circuit was also partially given.
该装置用真有效值电路检测非正弦焊接电流值，用中断和定时计数器实现了可控硅的精确触发。
The measuring circuit for RMS of non-Sin welding current and the precise triggers of SCR using interrupt controllers and timers in AduC812 MCU are also described.
智能型真有效值电压监测仪，采用AT89C52单片机，在一个周期内对电网电压等间距采样N次。
Singlechip AT89C52 was adopted by intelligent real available value voltage-monitoring apparatus to sample N times for the electrical network voltage between equal spaces in one cycle.
电压、电流真有效值变换精度高、速度快，电压真有效值负反馈闭环控制主回路网压波动补偿精度高；
The RMS converters of voltage and current have the advantages of high speed and precision, and with the feedback of RMS, the fluctuate of power voltage can be compensated at high precision.
我们使用了真有效值转换集成芯片AD536研制成功PTCR残余电流测试仪，本文叙述了该仪器的原理。
We used a monlithic Integrated circuit AD536 which performs ture rms-to-dc conversion. This paper describes the principle of the PTCR remainder current instrument with AD536.
真有效值电量传感器是针对平均值测量法不能准确测出其有效值而设计的。有效值又称均方根值（rms）。
TRMS electricity isolated sensor is designed for test that can not be tested exactly by average test method, RMS is also root mean square.
真有效值电量传感器是针对平均值测量法不能准确测出其有效值而设计的。有效值又称均方根值（rms）。
TRMS electricity isolated sensor is designed for test that can not be tested exactly by average test method, RMS is also root mean square.
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