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Description: A digital fi‘equeney meter designed with FPGA development software Q-~us 11 is introduced．The 1 Hz—l MHz input measured pulse signals of the digital ii‘equency meter can be used for measuring frequency，period，pulse width and duty ratio，etc．The test results stably display O71 3 seven—segment numeric tubes，and the measuring ranges may be switched over automatically．The measuring error is equal to or less than 0．1％．
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Size: 192493 |
Author: 胥海勇 |
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Description: Net Statistics is a network monitoring tool. Watch device status, parameters and statistics for incoming and outgoing traffic, and summary info. Traffic diagram shows last few minutes in real-time for easy monitoring of network activity.-Net is a network monitoring too l. Watch device status, parameters and statistics for incoming and out going traffic, and summary info. Traffic diagram shows last fe w minutes in real-time for easy monitoring of ne allow activity.
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Size: 82944 |
Author: 潘峰 |
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Description: A digital fi‘equeney meter designed with FPGA development software Q-~us 11 is introduced．The 1 Hz—l MHz input measured pulse signals of the digital ii‘equency meter can be used for measuring frequency，period，pulse width and duty ratio，etc．The test results stably display O71 3 seven—segment numeric tubes，and the measuring ranges may be switched over automatically．The measuring error is equal to or less than 0．1％． -A digital fi equeney meter designed with FPGA development software Q-~ us 11 is introduced. The 1 Hz-l MHz input measured pulse signals of the digital ii equency meter can be used for measuring frequency, period, pulse width and duty ratio, etc. The test results stably display O71 3 seven-segment numeric tubes, and the measuring ranges may be switched over automatically. The measuring error is equal to or less than 0.1.
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Size: 192512 |
Author: |
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Description: L and C Meter using PIC 16F84. Includes ASM, Schematic, and Hex
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Size: 225280 |
Author: joemon |
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Description: 集中器是抄表系统重要的组成部分，其性能好坏直接影响到抄表系统工作效率。本文利用先进的嵌入式技术设计并实现了一种电能抄表集中器，具有运行速度快、功能强等特点，既可以通过以太网应用在局域网覆盖的小区．也可以通过GPRS对没有宽带接入的小区或偏远的农村进行用电管理。该集中器经过适当的调整，可以应用于供水、供气系统中，做到水、电、气三表合一的集中抄表。-Concentrator,as an important component of the metering system,whether performances well will directly affect the eficiency of the metering system．This paper introduced the design of an electric energy metering concentrator by adopting the advanced embedded system technology．Th e electric energy metering concentrator offers the desirable features of high speed and strong function,etc．Furtherm ore，it not only can be applied in the districts covered of the L N through the Ethemet,but also can be applied in the districts or remote rural areas where there is no broadband accessing through the GPRS．With appropriate adjustments，the concentrator can be used in water supply systems and gas supply systems．It can provide the function of reading the degrees of water，electricity and gas in the same meter．
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Size: 176128 |
Author: wanghuali |
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Description: 数字频率计的设计与制作说明书
1、 收集频率测量和计算的相关资料，学习相关技术，理解设计要求。
2、 采用51单片机，完成相关方案论证。
-The design and production of digital frequency meter manual
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Size: 1673216 |
Author: jun |
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Description: 电容电感表程序，采用AVR的MEGA8单片机。-L\C meter program for AVR mega8 mcu
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Size: 6144 |
Author: 刘建军 |
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Description: this is documentation belongs to dlms meter l
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Size: 13647872 |
Author: tganeshg8
|
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Description: lc meter asm pic16f84 source code
Platform: |
Size: 168960 |
Author: artkar |
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Description: WH-L101 软件设计手册
产品特点：
? 点对点通信协议（同时支持集中器通信的固件）
? 支持频段：398~525Mhz(L101-L)和 803~930Mhz (L101-H)
? 支持定点发送模式
? 数据加密传输
? 2000~3000 米传输距离
? -138.5dBm 接收灵敏度
? AT 指令配置，配套设置工具
? 内置看门狗，永不死机
? 1.8~3.6V 电源供电
? 最低接收电流 4μA
? 超小尺寸：26.6 x 18.2 x 2.6mm，SMT 封装(WH-L101 software design manual
Product features:
Point to point communication protocol (at the same time supporting the centralizer communication firmware)
Support frequency bands: 398~525Mhz (L101-L) and 803~930Mhz (L101-H).
Support fixed-point sending mode
Data encryption transmission
2000~3000 meter transmission distance
-138.5dBm reception sensitivity
AT instruction configuration, set up tools
A built-in watchdog, never dead
1.8~3.6V power supply
Minimum receiving current 4 u A
Ultra small size: 26.6 x 18.2 x 2.6mm, SMT package)
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Size: 1232896 |
Author: sol |
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