Abstract
In food save carried with purchase, it is humidity contains the deal and keeps the temperature is two very important parameters. For controlling to shout the amount of water within the scope of procure best with store, avoid resulting in the otiose economy in spoiled by mildew etc. in food lose, satisfying the food the hoard the request between section and profession door, crying need a kind of diagraph is dependable and operate the convenient corn humidity and temperature measurements device. Former adoptive of corn humidity measure ,the rule of the measurement complicacy, time long and build the price high, very difficult satisfy the request, therefore we need a kind of building the price cheap, usage convenience and measure accurate degree of humidity measure .
According to single a machine logarithms word signal of high sensitive with can control the sex, the degree of humidity of spreads to feel the machine can produce the emulation signal, with A| D emulation arithmetic figure conversion an a set of examinations for of function, I designing with AT89c51 for core system, among them include the power supply the system, A/ D conversion, single a machine, reply an electric circuit, temperature examination and control, keyboard and manifestation and reports to the police the electric circuit, system software etc. part of designs.
Passing the calculator control can realize person's machine separates, save the manpower material resources, and this design builds the price low, can control
The sex is strong, ideal temperature degree of humidity examination system.
