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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
DEMO
- 手持终端(PDA)源程序,可与复费率协议的电子式电能表进行红外通讯,已运行多年,学习参考价值很高。-Handheld (PDA) source, the agreement with Multi Rate Electronic Energy Meter for infrared communication, has been running for many years, learning the high reference value.
duogongnengdianbiao
- 一篇关于多功能电能表及其远程抄表系统的研究与实现的文档,值得参考-Article on the multi-meter and remote meter reading system research and implementation of the document, it is also useful
power
- 电子式电能表设计毕业论文,详细的介绍了原理图及程序-Electronic energy meter design thesis, a detailed descr iption of the schematic diagram and procedure
645
- 多功能电能表通信规约 ,即DTL—645通信协议-Multi-function meter communication protocol, which DTL-645 communication protocol
89C52
- 52单片机做的电能表,可以和电脑通讯,红外通讯等,时段自动切换等.-52 meter microcontroller to do, can and computer communications, infrared communications, automatic switching time.
ADE7758dzi
- 基于ADE7758的GPRS网络电能表设计.pdf -基于ADE7758的GPRS网络电能表设计.pdf
dianzidfh
- 电子式三相IC卡预付费电能表的设计与研究.rar
Multi_func_meter_comm_protocol
- 多功能电能表通信协议备案文件(取代09-001和09-002).pdf-Multifunction Energy Meter Communication Protocol for the record file (instead of 09-001 and 09-002). Pdf
window
- 通过对实际电能表的了解,设计可以在电脑上运行的虚拟电能表-By understanding the actual power meter, designed to run on Virtual PC Meter
datasheet
- 电能表制作所需器件2302的资料图,网上很难找到,所以贡献出来-2302 Meter produced the data for the required devices, online hard to find, so the contribution from
xqw0910
- brush developed in delphi ·Improved component for work with ·Improve DBGrid from EhLib. Many f ·Delphi 的StringGrid无法嵌入ComboB ·一个相当不错的皮肤源码 ·制作API钩子,截获API的源码 ·漂亮的delphi界面控件 ·远程桌面,服务端+客户端 ·DELPHI办公全套管理系统 ·针对 UDP 通讯协议的 Socket 构件, ·获取
IEC6205331
- 开发电能表必备的资料IEC62053-31 给一些苦于不容易下载此标准的网友。-<<IEC62053-31 STANDARD>> Static meters for active energy (classes 1 and 2)
singlephasemeter
- 低成本单相液晶显示的电能表原理图,可进行RS232通讯。- Single phase LCD energy meter with RS232 schematic
dnbhgq
- 电能表中查看状态,分类,类型,型式,电压,电流,频率,常数,倍率,新旧,有无阻逆器,等级,接入方式,产权,位数,结构,有功无功,多功能时无功等级这些字段是否合理有效(及是否符合系统代码表的要求,是否存在空和不合要求数据)-Meter in the view state, category, type, type, voltage, current, frequency, constant, rate, new and old, have unimpeded inverse control, cl
sd0432
- sd0432液晶驱动程序 用于驱动电能表的段码液晶 -sd0432 LCD driver for driving the LCD Segment Meter
1
- 全自动电能表检定管理系统,是与校表设备配套的管理系统,可以实现,设备设置,自动抄表,数据存储打印等功能。-Automatic meter management system certification, with the calibration equipment for the management system, can achieve, equipment setup, automatic meter reading, data storage and print functions.
430
- 基于德州430的单片机,可以很好的做为电能表的学习资料。-430 Texas-based microcontroller, can be a good learning materials as a power meter.
Q_GDW-364-2009-dxzndbgf
- Q_GDW 364-2009 单相智能电能表技术规范-Q_GDW 364-2009 intelligent single-phase energy meter specifications
standard-meter
- DLMS基础的电子式电能表协议的研究与应用 标准电能表通信协议基础应用研究及实现-DLMS-based electronic energy meter research and application protocol standard meter communication protocol based on applied research and implementation