Signal conditioning and AD conversion device based on CPCI bus

Abstract

The invention provides a signal conditioning and AD conversion device based on a CPCI bus. The signal conditioning and AD conversion device comprises a voltage dividing circuit, a filtering circuit, an effective value conversion and filtering circuit, an isolation and conditioning circuit, an AD conversion circuit, an FPGA logic control unit and a CPCI bus bridging circuit which are connected in turn. The signal conditioning and AD conversion device also comprises a power supply. The voltage dividing circuit is used for converting the inputted signal voltage to be detected into the effective range of the device. The filtering circuit is used for filtering noise. The effective value conversion and filtering circuit converts the inputted AC signal into a DC signal and performs filtering. The isolation and conditioning circuit is used for realizing signal following, signal conditioning and signal linear isolation. The AD conversion device converts an analog signal into a digital signal. The FPGA logic control unit is used for information interaction. The CPCI bus bridging circuit realizes conversion from the PCI bus to the local bus.

Description

technical field [0001] The invention relates to a high-precision real-time monitoring and isolation technology for multi-channel, multi-type and different input range signals by a fault diagnosis information collection system, in particular to a signal conditioning and AD conversion device based on a CPCI bus. Background technique [0002] Compact PCI (Compact Peripheral Component Interconnect), referred to as CPCI, is a new generation of industrial bus proposed by the International Federation of Industrial Computer Manufacturers based on the PCI electrical specification with the characteristics of openness, good heat dissipation, high stability, and high reliability. interface standard. Board products based on CPCI bus can be used in many fields such as automatic control, data acquisition, measuring instruments, radar, sonar, fire control, accusation and modular design, and can meet the requirements of aviation, aerospace, shipboard, vehicle, measurement and control, etc. ...

AI Technical Summary

Problems solved by technology

[0003] With the development of science and technology, the computer control system is becoming more and more complex, the level of automation is getting higher and higher, and the costs related to it are getting higher and higher. Any failure or failure during its operation will not only cause major economic losses, It may even lead to casualties

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