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在微机应用领域中,如何最大限度地发挥微机的功能,提高产品或系统的性能,降低成本,是微机能否得到推广的关键。最近我们在研制“微型机控制交变温湿试验箱”的产品中,采用了一种完全不同于以往的控制方法。使控制精度达到了目前日本同类产品的最高指标。交变温湿试验箱是按给定温湿度进行控制。控制曲线如图1所示。温度由低温恒温、高温恒温、上升和下降四个阶段组成,控制范围20℃～70℃,湿度控制范围70％～99％。国际标准(英国标准)规定:恒温恒湿阶段:
In the field of microcomputer applications, how to maximize the functions of the microcomputer, improve the performance of the product or the system, and reduce the cost are the keys to whether the microcomputer can be promoted. Recently we are in the development of “microcomputer controlled alternating temperature and humidity chamber,” the product, using a completely different from the previous control methods. So that control accuracy has reached the highest level of similar products in Japan. Alternating temperature and humidity chamber is controlled by the given temperature and humidity. Control curve shown in Figure 1. Temperature by the low temperature, high temperature constant temperature, rising and falling four stages, the control range of 20 ℃ ~ 70 ℃, humidity control range of 70% to 99%. International Standard (British Standard) provides: constant temperature and humidity stage: