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近几年来,国内生产的三位、三位半A/D器件日趋成熟。由于这类器件性能稳定,价格便宜,使用方便,这就为数字化测温,测压等面板表,提供了良好的手段。目前,国内已有不少厂家生产了三位半A/D变换器件组装的面板表。一个测试技术数字化显示的趋势也正在逐步形成。如何把温度、压力、流量等物理量转化为可供A/D器件进行模拟转换和显示的方法,是采用这一新技术的关键。现结合自己工作中的一些实践,先介绍在温度测试方面的几种应用线路,供大家参考。
In recent years, the domestic production of three, three and a half A / D devices maturing. Because of the stable performance of these devices, the price is cheap, easy to use, which for the digital temperature, pressure gauges and other panel tables, provides a good means. At present, there are many domestic manufacturers have produced three and a half A / D converter assembly panel table. The trend of digital display of a test technology is also gradually taking shape. How to convert the physical quantities such as temperature, pressure and flow into the analogue conversion and display method for A / D devices is the key to adopting this new technology. Now some practice in their own work, first introduced in the temperature test several application lines for your reference.