Free LabVIEW Data Acquisition Programming Guide

Programmable Package SG-8018CA(SG7050C) 0.67M~170M

南麟LN1139BAMR

Free LabVIEW Data Acquisition Programming Guide

This section mainly introduces the basic knowledge of data acquisition technology, including the following three aspects:

1. The basic components of a complete data acquisition system
2. National Instruments provides data acquisition hardware products based on which platforms, and which application areas are applicable to them.
3. What important parameters should be paid attention to during the hardware selection process of data acquisition equipment?

The basic components of the data acquisition system

As shown in Figure 1-1, a complete data acquisition system usually consists of four parts: the original signal, the signal conditioning device, the data acquisition device, and the computer. But sometimes, the original physical signals in nature are not directly measurable electrical signals, so we will convert these physical signals into voltage or current signals that the data acquisition device can recognize through sensors. The signal conditioning device is added because some input electrical signals are not convenient for direct measurement. Therefore, the signal conditioning device is required to perform processing such as amplification, filtering, and isolation, so that the data acquisition device is more convenient to accurately perform the signal. Measurement. The function of the data acquisition device is to convert the analog electrical signal into a digital signal for processing by the computer, or to convert the computer-edited digital signal into an analog signal output. The driver and application software are installed on the computer, so we interact with the hardware, complete the collection task, and perform subsequent analysis and processing on the collected data.

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