Abstract
As the industry and the society developing, the humiture becomes more and more
important and a lot of products are sensitive to humiture. However, humiture -measuring
apparatus in the market now only can check and measure the humiture of one point, at the
same time, the humiture information is not real time and the precision is low. It takes a
great of troubles for the industry-controllers to make decision .In this situation, design and
implement one applicable system which can watch measure and control the humiture and
the measuring results is real time and the precision is great and more essential. In order to
meeting this application, this paper talks about The Multiple-Point’s humiture Measuring
System.
This system based on single chip computer, can inspect and control multiple
humitures in real time. The Slaved Machine can collect humiture information on its own
and display it on the LED module. Following the Master Machine’s command, the Slaved
Machine can up-send the humiture information to the Master Machine through the RS-485
bus interface and the communication protocol. The Master Machine sends commands,
controls the Slaved Computer gathering and up-sending the humiture data including
history information, and it manages processes and stores the humiture information. The
Master and Slaved Computer will exchange information and correspond to each other, so it
works together perfectly.
Key words: single chip computer; RS-485 protocol; measure- humiture
