期刊论文

中文

微计算机信息

1008-0570

2010

26

1

80-81,74

10.3969/j.issn.2095-6835.2010.01.033

本校为第一机构

利用LM3S615 32位微控制器和SP3485接口芯片构成的数据采集与控制系统,具有2个10位的ADC（模数转换器）输入通道,采样速率为500,000次/秒,误差±1LSB,内部参考电压;3个独立的模拟比较器输入,6路PWM输出,8路开关量的输入/输出;采用RS-485接口传输数据,通信速率10Mbps,支持Modbus RTU和Modbus ASCII协议,适合电机控制、数据采集与控制等领域应用。

The 32-bit microcontroller LM3S615 and the interface chip SP3485 can be used for date collection and control system, it has two 10-bit ADC input channel, its sample rate is 500,000 times/see, the error is ±1LSB, and built-in reference voltage; Three independent analog comparator input, 6-channel PWM output, 8-way switch input / output; The system adopt RS-485 interface to transmit data,the communication rate is 10Mbps, supports Modbus RTU and Modbus ASCII protocol,it c...