According to the characteristics of the human pulse signals, a pulse fluctuation frequency measurement system is designed.
根据人体脉搏信号特征，本文设计了一种脉搏波动频率测量系统。
This paper introduces a frequency measurement system based on an AT89C2051 micro controller for hydroelectric generator unit.
介绍了以AT 89 C 2051单片机为核心的水轮发电机组频率测量系统。
Described in this paper is a newly developed portable computer-based vibration frequency measurement system for turbine blades.
采用以便携式计算机为核心的新型汽轮机叶片频率测量系统可大大提高测量的精确度和工作效率。
The measurement accuracy and work efficiency are greatly improved by turbine blade natural frequency measurement system based on industrial PC.
基于PC机的汽轮机叶片静态频率测量系统可大大提高测量的精确度和工作效率。
On the basis of SAW technology, this thesis designs a SAW humidity sensor. Include the design of IDT (interdigital transducer), the thin film as well as the frequency measurement system.
在对SAW传感器技术进行研究的基础上，本文设计了一个SAW湿度传感器，包括IDT(叉指换能器)的设计、薄膜的设计以及频率测量系统的设计。
A wetness measurement system based on cavity perturbation method is designed for precise measuring, including automatic frequency tracing system and equal precision frequency measurement system.
以汽轮机内蒸汽湿度的准确测量为目的，设计了基于微波谐振腔微扰法的蒸汽湿度测量系统：自动频率跟踪系统和等精度频率测量系统。
The final-plating machine is one of the main equipment for producing the quartz crystal resonators, The accuracy of its frequency measurement system is to define the accuracy of the integral machine.
微调机是石英晶体谐振器成品生产的主要设备，其频率测量系统的精度决定了微调机的微调精度。
The design of target doppler frequency measurement circuit is very important in phase coded MMW radar system because of the high measurement precision requirement of target speed.
在某相位编码毫米波雷达系统中，要求很高的目标速度测量精度，因而目标多普勒频率测量电路的设计比较重要。
The design of target Doppler frequency measurement circuit is very important in phase-coded MMW radar system because of the high measurement precision requirement of target speed.
在某相位编码毫米波雷达系统中，由于对目标速度测量精度的要求很高，因此目标多普勒频率测量电路的设计也具有比较重要的地位。
The current measurement and control system in a Low-frequency Magnetic Field is a comprehensive system of hardware and software, including two parts: current measurement and computer control.
低频电磁场电流测控系统包括电流测试和输出控制两个部分，由软件和硬件相互配合组成一个完整的计算机控制系统。
In this paper, the design of the frequency measurement and correcting system can be achieved with less cost, and it also offered the system performance test.
通过对该方法灵活运用，本文用较少的代价完成了频率测量及校正系统的设计，并对该系统进行了性能测试。
Instantaneous frequency measurement (DIFM) receiver is one of important component part of EW system.
瞬时测频接收机是电子战系统的重要组成部分之一。
Frequency of external signals is constantly needed to be measured when complex measurement and control instructions are executed in an embedded system.
嵌入式控制系统在执行复杂测量与控制任务的同时，常需要测量外部信号的频率。
An algorithm for power system frequency measurement based on numerical differentiation and central Lagrange interpolation is presented.
提出了一种基于数字微分和拉格朗日插值的系统频率快速而准确的测量算法。
Design of computer controlled wide range frequency response measurement system is introduced.
介绍了计算机控制的宽带频率特性测试系统的设计。
The system can be used to measure the voltage responsivity and detectivity of infrared detector at different modulation frequency with rapid speed and high accuracy, it meets the need of measurement.
该系统可以自动测试不同调制频率下红外探测器的电压响应率和探测率，能够快速准确地完成测试任务，满足了测试要求。
By the method of frequency measurement, instant rotational speed is measured in the test system, angular acceleration is calculated by using the feature of the MCU with the least square method.
介绍了一种发动机无外载功率检测系统的软、硬件设计，利用测频法测量出某一时刻的瞬时速度，并利用最小二乘法求出角加速度。
In this paper, a system of highly accurate dynamic frequency measurement is described.
本文介绍了一种高精度动态频率测量系统。
The mounting resonant frequency of vibration measurement system formed with piezoelectric acceleration sensor YD-1 and mounted magnetic base CZ-4 is addressed.
介绍了YD - 1型压电式加速度传感器与CZ - 4型磁座构成的磁座安装测振系统的安装谐振频率。
This paper studies a kind of new autocontrol system across-the-board, which can realize both the measurement of frequency and the separation of quartz crystal wafer.
本文主要研究了一种集晶片频率测量、分选于一体的新型石英晶片测量与分选的自动控制系统。
Aiming at the existing problem in harmonics measurement of power system, the paper (presented) a collecting method based on frequency multiplication phase-locked.
针对电力系统谐波测量方法存在的问题，提出了一种基于锁相倍频采集方法。
The methods of channel measurement were overviewed and the complete schemes in time domain and frequency domain were proposed for establishing measurement system for indoor channels.
针对建立室内信道测量系统的需要，总结了信道测量的各类方法，提出了室内信道时域和频域测量的完整的系统方案。
This paper introduces a system of frequency measurement and control system based on single-chip microcomputer control.
本文在对单片机小系统进行研究的基础上，介绍了一种由单片机控制的频率测量控制系统。
The recent achievements in the field of power system frequency measurement are summarisedin this paper.
较为全面地综述了国内外在电力系统频率概念及其测量技术方面的研究成果。
A digital filtering method is proposed for compensation of the low frequency characteristics of piezoelectric dynamic strain measurement system.
针对采用压电元件的动态应变测量系统的低频失真问题，提出一种采用数字滤波器的低频特性补偿方案。
It is very convenience for measurement antenna gain of antenna-receiver system. The method has high precision and it is not accept limit of frequency.
该方法对测量天线——接收机系统的天线增益尤为方便，它的测量精度高，不受频率限制。
Through removing mean and frequency spectrum correction, the measurement precision of system is improved.
采用去均值和频谱校正的方法，改善了系统的测量精度。
The test results prove that by using the system the frequency measurement accuracy can achieve thousandth and the relative error of measurement within 1%.
测试结果证明采用该系统对频率测量的精度可以达到千分之一，测量的相 对误差不大于1％。
Data acquisition system discussed in this paper is a part of the measurement system of pulse-to-pulse frequency stability of RF pulse trains.
数据采集系统是射频脉冲序列脉间频率稳定度测试系统中的一部分。
In order to achieve high accurate measurement of object's velocity, a laser Doppler velocity radar system is established and the frequency estimation algorithm is investigated.
为了实现高准确的测量对象的速度，激光多普勒测速雷达系统建立和频率估计算法研究。
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