一、前言微机在粮仓温(湿)度自动检测中的应用近年来发展较快,目前这类检测系统的主机大多采用单板机,但体积较大,成本较高。我们研制的SMC-A型粮仓温(湿)度智能巡测仪在功能上与以单板机为主机的系统大体相同,成本降低60％,体积缩小,操作简单,工作可靠,实用性强。该巡测仪由价格低廉、功能较强的单片机以及少量的外围电路芯片构成,显示打印输出部份采用了日 I. INTRODUCTION The application of microcomputer in automatic temperature (wet) detection of granary has been developing rapidly in recent years. At present, the host of such detection system mostly adopts the single-board machine, but the volume is larger and the cost is higher. We developed SMC-A-type granary temperature (wet) intelligent touring instrument in function and the single-board computer-based system is roughly the same, the cost is reduced by 60%, the volume is reduced, the operation is simple, reliable, practical and strong. The detector by the inexpensive, more powerful microcontroller and a small amount of peripheral circuit chip structure, showing the print output part of the day