low, the control function strong, the expansion nimble, merits and so on
microminiaturization and easy to operate, widely applies in the instrument measuring
appliance, the union different type sensor, may realize such as physical quantity and
so on voltage, power, frequency, humidity, temperature, current capacity, speed,
thickness, angle, length, degree of hardness, element, pressure surveys.This
curriculum design was in studies in the monolithic integrated circuit basic principle to
carry on, the comprehensive utilization studied the monolithic integrated circuit
knowledge to complete a monolithic integrated circuit application system design.
This article mainly introduced based on the 89S52 monolithic integrated circuit
temperature measurement system, in detail described the use numeral temperature
sensor DS18B20 development temperature measurement system process, key to the
sensor under monolithic integrated circuit hardware connection, the software
programming as well as various modules system flow has carried on the exhaustive
analysis, 11 has also carried on the introduction to various part of electric circuits,
This system may facilitate realization temperature gathering and the demonstration,
and may according to need to establish the bound to report to the police willfully the
temperature, it uses quite conveniently, has the precision high, the measuring range
width, the sensitivity high, the volume small, the power loss low status merit, suits in
our daily life and the labor, the agricultural production temperature survey, also may
treat as the temperature processing module to insert in other systems, takes other host
system the assistance expansion.DS18B20 and STC89C52 the union realization most
Jan temperature examination system, this system structure is simple, antijamming
ability, suits under the adverse circumstance carries on the scene temperature survey,
has the widespread application prospect.
This design first determines the goal, after that is each function module design
and the corresponding procedure compilation, again carries on the simulation on the
Proteus software, several passes through the compilation, the revision, the
simulation.Finally panel carries on the examination in the monolithic integrated
circuit development, the process observation experiment phenomenon and the result,
this design meets the design requirements.
Key words: Monolithic integrated circuit; Digital thermometer; STC89C52;
DS18B20; PROTEUS;
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