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Description: 本文给出了一种利用软件实现4～20mA传感器数据转换的方法，消除了硬件电路中电压放大器输出端的残留电压，保证了数据转换精度-this paper, the use of software to achieve a 4-20mA sensor data conversion methods Elimination of hardware circuit voltage amplifier output voltage of the residue, ensuring the accuracy of data conversion
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Size: 6425 |
Author: 郭九生 |
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Description: 4-20mA输出的PWM计算程序
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Size: 57282 |
Author: srga_123@126.com |
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Description: 4～20mA传感器数据处理新途径.pdf
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Size: 302043 |
Author: gms335 |
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Description: 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 standards
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Size: 38912 |
Author: 肖业伟 |
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Description: 本系统以直流电流源为核心，AT89S52单片机为主控制器，通过键盘来设置直流电源的输出电流，设置步进等级可达1mA，并可由数码管显示实际输出电流值和电流设定值。本系统由单片机程控输出数字信号，经过D/A转换器（AD7543）输出模拟量，再经过运算放大器隔离放大，控制输出功率管的基极，随着功率管基极电压的变化而输出不同的电流。单片机系统还兼顾对恒流源进行实时监控，输出电流经过电流/电压转变后，通过A/D转换芯片，实时把模拟量转化为数据量，再经单片机分析处理， 通过数据形式的反馈环节，使电流更加稳定，这样构成稳定的压控电流源。实际测试结果表明，本系统输出电流稳定，不随负载和环境温度变化，并具有很高的精度，输出电流误差范围±5mA，输出电流可在20mA~2000mA范围内任意设定，因而可实际应用于需要高稳定度小功率恒流源的领域。-the system to DC current source to the core, MCU AT89S52 main controller, through the keyboard to set up DC power supply output current, set up to 1mA Stepping grades, digital control can be shown by the actual output current value and current setting. The system consists of programmable microcontroller digital signal output, after the D/A converters (AD7543) analog output. After Operational Amplifiers isolation, amplification and control of the output power base. With the power of the base voltage changes in the output current. SCM system also takes on the constant current source for real-time monitoring, after current output current/voltage changes, the A/D converter chip, real-time conversion from analog to the volume of data and then analyzed by the MCU, through data link in the
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Size: 196608 |
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Description: IDC3516-4-20mA电流环隔离接口芯片的应用-IDC3516-4-20mA current loop isolation Application Interface Chip
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Size: 33792 |
Author: gw |
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Description: PIC16F876单片机,有4到20MA电流输出,低功耗等特点,使用于工业仪表行业-PIC16F876 microcontroller, to a four 20MA current output, low power consumption and other characteristics, Instrumentation used in industrial sectors
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Size: 57344 |
Author: 陈超 |
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Description: 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,
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Size: 126976 |
Author: 何宏 |
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Description: 本文给出了一种利用软件实现4～20mA传感器数据转换的方法，消除了硬件电路中电压放大器输出端的残留电压，保证了数据转换精度-this paper, the use of software to achieve a 4-20mA sensor data conversion methods Elimination of hardware circuit voltage amplifier output voltage of the residue, ensuring the accuracy of data conversion
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Size: 6144 |
Author: 郭九生 |
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Description: 8051驱动LED的4至20毫安的PWM程序。C环境-LED driver 8051 of 4-20 mA process of PWM. C environment
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Size: 57344 |
Author: 李晨光 |
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Description: 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-Industrial instrumentation commonly used to 4-20mA output of this program through the C51 single-chip analog output PWM provides a good example of ideas and
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Size: 57344 |
Author: ya--ya |
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Description: 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
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Size: 389120 |
Author: 李和明 |
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Description: 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 voltage input XTR115 problems, their own two-wire system,+ 5V output can provide a larger current, need to DCDC, RC filter using tantalum capacitors and 4.7k-4.9k resistor at low temperature drift can be a higher degree of linear, PWM output for the AVR Singlechip 16, mode 15, regardless of the frequency
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Size: 4096 |
Author: niucunfei |
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Description: 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
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Size: 73728 |
Author: 秦川 |
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Description: 在这次设计中，主要是实现工业标准上的电压（0～5V、1～5V）和工业标准上的电流（0～10mA、4～20mA）的互相转换。-In this design, mainly on the achievement of industry-standard voltage (0 ~ 5V, 1 ~ 5V) and the current industry standard (0 ~ 10mA, 4 ~ 20mA) mutual conversion.
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Size: 207872 |
Author: 秦川 |
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Description: 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
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Size: 30720 |
Author: wang |
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Description: 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
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Size: 5120 |
Author: guliqiang |
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Description: preteus仿真 4-20mA输出 加数据表(protues multisim 4-20mA)
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Size: 20480 |
Author: 蝈蝈s
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Description: 基于STM32采集4-20ma转成0-3.3v电压输入。(Based on STM32 acquisition, 4-20mA converted to 0-3.3v voltage input.)
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Size: 1943552 |
Author: 我爱开发
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