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IEC104
C语言实现IEC104客户端，可以实现总召，遥信变位上送，YC上送。(The IEC104 client C language, you can achieve total Zhao, remote deformation on the YC sent.)
- 2012-02-16 10:52:57下载
- 积分：1
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CAN-RS232
基于51控制的CAN 转RS232整理程序(Based on 51 control CAN turn RS232 sorting procedure)
- 2014-10-25 10:10:20下载
- 积分：1
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Cell-association-in-HetNet
Important research articles on cell association in Heterogeneous wireless network
- 2017-03-25 15:04:37下载
- 积分：1
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Smpl_HID
32bit M0 驱动例子代码 USB HID(sample code for M0 aba base chip)
- 2013-05-24 02:13:03下载
- 积分：1
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Button-control-of-DC-motors
相应的数字同步显示在数码管上，数码管显示 1-5速度等级，数字越大，速度越小(Corresponding digital synchronous digital tube, digital tube display to 1-5 speed rating, the larger the number, the smaller the speed)
- 2012-08-30 11:48:24下载
- 积分：1
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基于硬判决的BICM-ID的Turbo均衡及其改进
基于硬判决的BICM-ID的Turbo均衡及其改进(Hard decision based on the BICM-ID in Turbo equalization and improvement)
- 2010-05-27 13:40:01下载
- 积分：1
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模拟智能灌溉
蓝桥杯单片机，模拟智能灌溉，亲测是对的！(Blue Bridge Cup MCU, simulate intelligent irrigation, pro-test is right!)
- 2019-07-10 23:48:07下载
- 积分：1
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MCU
1小时学会C语言51单片机C语言入门教程(failed to translate)
- 2012-04-12 22:11:02下载
- 积分：1
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shuanglushuzihecheng
摘要
电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。
基于单片机的程控信号源设计，运用数字调相、数字调幅和数字调频等技术，要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器，并给出了调幅、调频、调相的实用电路，频率调节通过改变8253计数器的分频系数来实现；相位调节由51单片机预置计数器的计数初值来完成，幅度的调整通过改变DAC1210II的参考电压来实现，使频率分辨率达0.01Hz,相位调节精度达0.1°，并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高，稳定性好，失真度低，电路简单、可靠、便于程控。
关键词：数字合成信号源；程控；调幅；调频；移相；
(Abstract
Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration.
Design of the programmable signal supply controlled source，which based on the MCU，including digital phase adjustment，distal amplitude adjustment，digital frequency adjustment etc．The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude， frequency， phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ)
- 2021-04-08 20:19:00下载
- 积分：1
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AD7793温度测量参考资料
官方AD7793参考程序，采用stm32f103(The official AD7793 reference program uses STM32F103)
- 2019-02-15 11:27:05下载
- 积分：1
