Abstract
With the infiltration in the social field of the sensor in recent years, the air pressure sensor is moving towards deepening constantly, drive tradition is it measure crescent benefit to upgrade day to control at the same time. In measuring in real time and automatically controlled one-chip computer application system, the one-chip computer often uses as a key part, only airpressure sensor knowledge is not enough, should also follow the structure of the concrete hardware , and direct against and use the software of target's characteristic to combine concretly, in order to do perfectly.
A method to devise a digital precision barometer is illustrated in this article. The sensor outputs the voltage signal responsing to the air pressure. The singal is converted by AD574 , then inputted into single chip microcomputer (SCM) and displayed on LED synchronously.
This kind of barometer is portable ,easily operated and absolutely accord with the design requirement.
Keywords : barometer ; air pressure sensor ; ad574 ; single chip microcomputer
