Design of Digital Thermomer Based on SCM
Abstract
Along with national economy development, the people need to each
heating furnace、the heat-treatment furnace、in the reactor and the boiler the
temperature carry on the monitor and the control. Not only uses the monolithic
integrated circuit to come to them to control has the control to be convenient,
simple and flexibility big and so on merits, moreover may enhance large scale
is accused the temperature technical specification, thus can big enhance the
product the quality and quantity.
In daily life and industrial production process, often used in the detection
and control of temperature, temperature is the production process and
scientific experiments in general and one of the important physical parameter.
In the production process, in order to efficiently carry out the production, to be
its main parameters, such as temperature, pressure, flow control, etc...
Temperature control in the production process of a large proportion.
Temperature measurement is the basis of temperature-controlled, more
mature technology.Traditional thermocouple and temperature components are
the second resistor.The thermocouple and thermal resistance are generally
measured voltage, and then replaced by the corresponding temperature,
these methods are relatively complex, requiring a relatively large number of
external hardware support. We use a relatively simple way to measure.
We use the United States following DALLAS Semiconductor DS1820
improved after the introduction of a smart temperature sensor DS18B20 as
the detection element, a temperature range of -55 ~ 125 º C, up to a maximum
resolution of 0.0625 º C. DS18B20 can be directly read out the temperature on
the north side, and three-wire system with single-chip connected to a
decrease of the external hardware circuit, with low-cost and easy use.
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