Adaptive filtering universal data acquisition system based on labview

Abstract

The invention discloses an adaptive filtering universal data acquisition system based on labview. The invention discloses a labview-based self-adaptive filtering universal data acquisition system, comprising a data acquisition module, a controller module and a data processing module. The data acquisition module comprises a sensor with a communication protocol, a hardware interface, a sensor without a communication protocol and an analog-to-digital conversion part. A sensor with a fixed communication protocol is directly connected with the hardware interface part; The hardware interface part isused for making interfaces for different communication protocols. A sensor without a communication protocol characterizes a physical change by a voltage change, and an analog-to-digital conversion section converts an analog quantity of the voltage change into a digital quantity. The device has the advantages that various data interfaces are provided for the sensor with the communication protocol,a high-precision analog-to-digital conversion function is provided for the sensor without the communication protocol, compatible data collection of various sensors is achieved, the device universality is greatly improved, and the data collection cost is reduced.

Description

technical field [0001] The invention relates to the field of sensor data acquisition, in particular to a labview-based adaptive filtering universal data acquisition system. Background technique [0002] Labview is a virtual instrument platform developed by National Instruments in the United States. It uses the graphical editing language G to write programs, and the generated programs are in the form of block diagrams. It provides a rich control and function library, which is an ideal choice for developing measurement or control systems. [0003] The sensors used for data collection vary greatly, and the built-in communication protocols are also varied. Some new sensors do not have a part for converting physical quantities into voltage signals, and users need to build an analog-to-digital conversion part to collect data. These different application conditions have great impact on user data. The collection work has created a great obstacle. [0004] Traditional data acquisit...

AI Technical Summary

Problems solved by technology

[0005] 1. The type of data input interface is single, and sensors of different interface types require the configuration and use of data acquisition modules with different interfaces

2. The filtering algorithm is fixed in the data acquisition hardware module. According to different data characteristics, the noise cannot be filtered out flexibly. As a result, the required accurate data is often not obtained.

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