Abstract
This article describes the hardware design and software design of the data on which
based on signal-chip microcomputer .The data collection system is the link between the
digital domain and analog domain. It has an very important function. The introductive
point of this text is a data to collect the system. The hardware of the system focuses on
signal-chip microcomputer .Data collection and communication control use modular
design. The data collected to control with correspondence to adopt a machine 8051 to
carry out. The part of hardware’s core is AT89S52, is also includes A/D conversion
module, display module, and the serial interface. Slave machine is responsible for data
acquisition and answering the host machine.8 roads were measured the electric voltage to
pass the in general use mold-few conversion of ADC0809,the realization carries on the
conversion that imitates to measure the numeral to measure towards the data that
collect .Then send the data to the host machine through MAX232.the host machine is
responsible for data and display, LED digital display is responsible display the data. The
software is partly programmed with VC++. The software can realize the function of
monitoring and controlling the whole system. It designs much program like
data-acquisition treatment,data-display and data-communication ect.
Keyword: data acquisition AT89S52 ADC0809 MAX232
