Multifunctional data acquisition module based on cpci bus

Abstract

The invention relates to a multifunctional data acquisition module based on a compact peripheral component interconnect (CPCI) bus. The multifunctional data acquisition module comprises a hardware module and a field-programmable gate array (FPGA) program. The hardware module comprises an impedance control circuit board, an electronic component, a small computer system interface (SCSI100) signal connection socket, a standard CPCI bus connector, and a standard 3UEurocard front panel. The impedance control circuit board and the electronic component are the core functional carriers of the invention and are divided into eight functional units such as an analogue-digital (AD) conversion module, a digital-analogue (DA) conversion unit, a timer unit, a counter unit, a universal input-output (IO) unit and an auxiliary circuit unit. The FPGA program comprises an AD conversion module, a DA conversion module, a timer module, a counter module and a universal IO module and is programmed and developed by Verilog hardware description language (HDL). The multifunctional data acquisition module has steady performance, high reliability, high bus signal driving capability, far transmission distance, simple structure, powerful function, high cost performance, is convenient to use, and can perform long-term and continuous mass data transmission.

Description

technical field [0001] The invention relates to a multifunctional data acquisition module based on a CPCI (Compact Peripheral Component Interconnect: Compact Peripheral Component Interconnect Standard) bus, in particular to a module for performing various data conversion and transmission between a computer and an external device. In various control fields, it is necessary to collect, analyze, process and display various data of the controlled equipment, which requires some data collection capable of completing various functions such as A / D, D / A and I / O. , Conversion module. The invention designs a multifunctional data acquisition module based on CPCI, which can realize AD conversion, DA conversion, general IO, timer and counter control at the same time. The invention belongs to the fields of computer communication, computer aided testing and automatic testing. Background technique [0002] Data acquisition, also known as data acquisition, is to use a device to collect data...

AI Technical Summary

Problems solved by technology

[0010] However, in some cases where the performance requirements of the data acquisition module are relatively high, the traditional ISA bus-based acquisition card obviously cannot meet the requirements, even the current high-speed USB, SCSI and other interfaces are not satisfactory

For some PXI bus functional modules needed in the measurement and control system, such as 429, 422, AD, DA, and image acquisition cards, although there are some mature products available for selection, these products are often designed for general purposes. It is not well designed to meet the requirements of high-performance and multi-functional data acquisition and testing

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