Hardware schematic circuit

Published:2014/3/26 21:41:00 Author:lynne | Keyword: Hardware schematic circuit | From:SeekIC

Hardware schematic is shown in Figure. This is an evaluation circuit, which can install three digital temperature sensor: AD7414, AD7416, AD7814, the software displays each device in turn measured ambient temperature and OTI analog outputs with LED indication. Some explanations are now as follows: (1) address of each device is different, and SDA, DOUT leads can be connected directly; AD7414, OTI output line (active low), now overrun alarm indication for the AD7416. (2) due to the inertia of the temperature coefficient of the larger, can be a simple and effective method of moving average, median method, low-pass filtering method for software filtering. In practical applications, the side of the sample side, the average of the average value as the temperature samples. Sampling frequency of 8 to 16 times can be. (3) The system uses LCM103 LCD module for temperature display, X25045 for power-on reset and watchdog with.



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