CAJ | 학술논문

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。
위료방편산생병공제FSK신호,문중제출료일충기우단편궤적설계방법。경건채용W77E58단편궤、고정도적DAC심편、MAX232화운산방대기등일계렬간단실용기건,병채용심편IMP813L설계간문구전로,사정개판자공작상태경가가고。연건포괄량부분：여외부계통3350주판지간적통신편정화신호발생기본신적모의편마발송편정。량부분연건재이단편궤위핵심적경건지탱하,능구량호은정지수출소수적FSK신호。해방법구유통용성,의거해원리가방편지산생기타모의신호,본잡재실제측량중적량호효과진일보증실료설계적합이성화정학성。
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.