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Real-time data acquisition system based on PC bus

Zhang Li-xun

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Abstract

In engineering applications, real-time data acquisition is a key step, and the best way to raise speed of data acquisition is the adoption of interruption. The design and implementation of the real-time data acquisition based on PC BUS is given in this paper. Signals from 4-channel are sampled synchronously using 12-bit A/D converter AD1674. 8259 interruption, external timer, A/D conversion, and implementation of interface programme running on C language are discussed. At last, the reliability and practicability of the system are verified by experiment, and the expected goal is achieved.

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What this paper is about

In engineering applications, real-time data acquisition is a key step, and the best way to raise speed of data acquisition is the adoption of interruption. The design and implementation of the real-time data acquisition based on PC BUS is given in this paper. Signals from 4-channel are sampled synchronously using 12-bit A/D converter AD1674. 8259 interruption, external timer, A/D conversion, and implementation of interface programme running on C language are discussed. At last, the reliability and practicability of the system are verified by experiment, and the expected goal is achieved.

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Available abstract

In engineering applications, real-time data acquisition is a key step, and the best way to raise speed of data acquisition is the adoption of interruption. The design and implementation of the real-time data acquisition based on PC BUS is given in this paper. Signals from 4-channel are sampled synchronously using 12-bit A/D converter AD1674. 8259 interruption, external timer, A/D conversion, and implementation of interface programme running on C language are discussed. At last, the reliability and practicability of the system are verified by experiment, and the expected goal is achieved.

Key concepts: Data acquisition, Timer, Computer science, Reliability (semiconductor), Key (lock), Interface (matter), Computer hardware, Real-time computing

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