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结构修改1
- 基于c8051f330芯片开发的电机正反转控制系统,能同时完成参数的设定与显示,系统具有4~20mA的标准模拟信号输出-c8051f330 chip development based on the reversion motor control system parameters can be completed simultaneously with the creation shows that the system has a 4-20mA analog signal output st
220
- 显字数显表源程序,拿来就可以用,采集4~20MA电流,-significant source of wordage a table, can be taken out, collecting 4-20MA current,
4-20mApwmout
- 工业仪表常用到4-20mA输出此程序通过C51单片机模拟输出PWM 提供了很好的思路和事例
4~20mA传感器数据处理新途径.pdf
- 4~20mA传感器数据处理新途径.pdf
4-20ma.rar
- 4-20MA信号发生器,含电路图,使用说明以及汇编源程序,4-20MA signal generator, including schematics, source code for use as well as the compilation
a.rar
- PWM经过RC滤波产生电压,经过XTR115产生4-20mA电流输出,要点是XTR115的电压输入问题,自身为两线制,+5V输出提供不了较大电流,需要用DCDC,RC滤波采用钽电容和4.7k-4.9k的低温漂电阻能得到较高线形度,PWM输出为AVR单片机16位,模式15,不分频,PWM voltage generated through RC filter, after XTR115 have 4-20mA current output, the key points of the voltag
iv_4_20ma
- 介绍如何简单可靠而方便测量 4~20mA 信号的文章。许多仪器仪表在远距离传送信号时,都有可能采取 4~20mA 的方式进行传送。本文对使用运算放大器或者不用运算放大器的场合都有介绍。给出了接口电阻的计算方法以及调整4mA=零点,20mA=满度的详细说明。并附有局部连接的原理图。-How simple, reliable and convenient measurement of 4 ~ 20mA signal article. Many instruments in the long-dist
ad421_4-20ma
- ad421可把串行输入的数据转换输出为4——20ma电流的器件。此为测试程序代码。-ad421 serial input data can be converted to output 4- 20ma current devices. This is the test code.
mA2DC-SCH+PCB
- mA电流转换成电压的电路SCH+PCB,可转换4~20mA的电流,改变电阻可改变转换范围。文件为Protel DXP 2004-mA current into a voltage circuit SCH+ PCB, can be converted 4 ~ 20mA of current, resistance to change can alter the scope of the conversion. Protel DXP 2004 documents
4-20mA-Current-Loop-Primer
- 20ma的电流环通信回路仍应用于一些远程通信的场合,本文为其实现过程。-20ma current loop
AD421_20100410
- 4~20毫安传感器变送程序 采用msp430-2013 //P1.5:数据输出 //P1.4:移位脉冲 //P1.6:锁存输出 //P1.2/A1+ P1.3/A1- 为外部传感器差动信号输入端-4 to 20 mA sensor transmitter program using msp430-2013// P1.5: data output// P1.4: shift pulse// P1.6: Latch the output// P1.2/A1+ P1.3/A1-d
4-20AD
- 实现工业自动化的传感器数据处理对0-5V电压和4-20MA信号与传感器实际采集值进行换算-Of industrial automation sensor data on 0-5V 4-20MA signal voltage and the actual acquisition value and the sensor conversion
SN8P1702A_V
- 使用 SN8P1702A 的低成本上下限通用数字表头 图示电路是一款输入电压 DC200mV ,满度读数 2000 个字的数字电压表头电路.分辨力达到 100uV/字 .这种参数与通常使用的 3 位半数字表头相吻合,(但是这里没有负电压信号的测量功能).因此,可以方便地在无需负信号输入的场合替换原来的数字表头. 替换带来的好处是这里具有上下限设置的控制功能,而普通的 3 位半数字表头却只能测量显示而不能进行设置控制. 配原理图应用和连接说明: 图A:测量和控制直流 200mA 信
4~20mA
- 4~20mA变送器开发用的代码用AD421芯片-4 ~ 20mA transmitter developed using AD421 chips with the code
mV_to4~20mA
- 单片机C语言程序,实现将采集到的0~10mV传感器信号转换为4~20信号,用到的芯片包括AD420,CS5532,X5045-Microcontroller C Programming Language, will be collected to achieve the 0 ~ 10mV sensor signals into 4 to 20 signal, use the chips include the AD420, CS5532, X5045
MultiInput_ai_module
- 模拟量万能输入,信号可以是,Ⅱ型标准信号:0~5V、0~10MA,Ⅲ型标准信号:1~5V、4~20MA,mV电压信号:0~20mV、0~100mV,热电阻: Pt100、Cu50,热电偶: B、E、J、K、S、T -Universal analog input signal can be, Ⅱ type standard signal: 0 ~ 5V, 0 ~ 10MA, Ⅲ Standard signals: 1 ~ 5V, 4 ~ 20MA, mV voltage signal: 0 ~
STM32F103-4~20collect
- STM32F103芯片做的采集4~20ma电流,并通过485总线发送出去采集值,非常适合初学者!- STM32F103 chip do collect 4 ~ 20ma current, and 485 sent by the acquisition value, very suitable for beginners!
PWM-convert-4-20ma-output
- 将单片机PWM信号变送成工业标准电流输出4-20mA -The microcontroller PWM signal transmission into industry standard 4-20mA current output
TEST
- 4通道4-20mA模拟量采集板通过RS485总线发送采集数据给PC机(The 4 channel 4-20mA analog acquisition board transmits data to the PC through the RS485 bus)
c8051f 4~20ma转485
- 运用c8051f350 将4~20ma转485接口的信号