摘要
为了方便产生并控制FSK信号,文中提出了一种基于单片机的设计方法。硬件采用W77E58单片机、高精度的DAC芯片、MAX232和运算放大器等一系列简单实用器件,并采用芯片IMP813L设计看门狗电路,使整个板子工作状态更加可靠。软件包括两部分:与外部系统3350主板之间的通信编程和信号发生器本身的模拟编码发送编程。两部分软件在以单片机为核心的硬件支撑下,能够良好稳定地输出所需的FSK信号。该方法具有通用性,依据该原理可方便地产生其他模拟信号,本卡在实际测量中的良好效果进一步证实了设计的合理性和正确性。
To generate and control the FSK signal,a design method based on MCU is given.The hardware is simple and practical devices,such as W77E58 MCU,high precision DAC chip,MAX232 and the operational amplifier.In order to ensure the more reliable work status,IMP813L chip is used to design the watchdog circuit.The software is composed of two parts： the communication programming of 3350 main board and the analog code programming of the signal generator.These softwares are supported by the hardware based on MCU,and the required FSK signal can be outputted stably.According to the principle of this method,the chip can easily generate other analog signals.The good result in practical application can prove the rationality and the validity of this design.
出处
《光电技术应用》
2011年第5期64-67,共4页
Electro-Optic Technology Application
基金
河南省创新人才工程项目(20040053)
