作为现代炊具的一种,微波炉正越来越多地被人们认识与接受。我国微波炉的研制工作起步较晚,目前一些厂家只能生产或组装一些低档次的微波炉。代表着微波炉重要性能指标的控制器,虽然国外一些大公司已有专门芯片生产,但国内厂家即便是花较高的价格,也很难进口到。国内目前生产的低档微波炉,多数是靠机械定时装置控制的,它只有单一的定时控制功能,而且定时不准,对于两分钟以内的定时,由于存在齿轮机械间隙,因此更难实现。而那些比较容易烧熟的绿叶蔬菜类食物,则又不能超过两分钟,否则就熟过了头。有些单位试用数字电路来实现,虽然控制精度和最小控制时间达到了秒级,但在智能化方面仍显 As a modern cooker, microwave ovens are increasingly being recognized and accepted by people. Development of microwave ovens in China started late, at present, some manufacturers can only produce or assemble some low-grade microwave ovens. Representative of the important performance indicators of microwave ovens, although some large foreign companies have specialized chip production, but even if the domestic manufacturers to spend a higher price, it is difficult to import. The domestic low-grade microwave ovens currently produced are mostly controlled by mechanical timing devices. They have only a single timing control function and are not scheduled for timing. Timing within two minutes is more difficult to achieve due to gear mechanical gaps. And those relatively easy to cook green leafy vegetables, then can not be more than two minutes, otherwise over cooked. Some units try digital circuits to achieve, although the control accuracy and minimum control time reached the second level, but in terms of intelligence is still significant