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Data acquisition card based on VISA technique

A data acquisition card and data acquisition module technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problems of unfavorable engineers for secondary development, lack of portability, and poor versatility, so as to reduce the difficulty of driver development and develop The effect of low difficulty and convenient secondary development

Inactive Publication Date: 2016-11-16
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of acquisition card is limited by its bus, susceptible to electromagnetic interference from other devices in the host, and does not have good portability, and its versatility is not strong, which is not conducive to engineers' secondary development

Method used

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  • Data acquisition card based on VISA technique
  • Data acquisition card based on VISA technique
  • Data acquisition card based on VISA technique

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Embodiment Construction

[0022] The present invention will be further described in conjunction with embodiment, accompanying drawing now. It should be understood that the following examples are only used to illustrate the present invention but not to limit the scope of the present invention.

[0023] figure 1 It is a schematic diagram of system composition, and a universal data acquisition card based on VISA technology in the present invention includes a data acquisition module, a USB communication module, and a host computer driver module.

[0024] The data acquisition module includes two parts, FPGA and ADC, mainly to realize the conversion of analog quantity into digital quantity, and at the same time find the trigger point according to the command of the host computer, take out useful data and write it into the buffer area of ​​the USB chip.

[0025] The USB communication module uses the classic chip 68013-56PIN of CYPRESS, mainly to realize the transmission of USB communication and the transmiss...

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Abstract

A data acquisition card based on VISA technique is characterized by comprising a data acquisition module, a USB communication module and an upper computer driving module, the data acquisition module is used for configuring the USB communication module, converting peripheral simulation signals into digital signals and then transmitting the digital signals to the USB communication module, data exchange is conducted between the USB communication module and the data acquisition module, and the USB communication module sends data received from the data acquisition module to the upper computer driving module. By developing the data acquisition card through a USB bus and a VISA interface, the protocol opening problem can be solved, driver development difficulty is reduced, and development cycle is shortened. The VISA technique is adopted for an upper computer and can perfectly support development platforms including Labview and CVI. Furthermore, a rich base VI function is provided so that engineers can conduct secondary development conveniently.

Description

technical field [0001] The present invention relates to a high-performance data acquisition card and a data acquisition method, in particular to a VISA technology-based data acquisition card and a data acquisition method, which has two channels of signal acquisition and one channel of signal generation for realizing data acquisition and testing . Background technique [0002] The task of the data acquisition system is to collect the analog signal output by the sensor, then convert the collected analog signal into a digital signal that can be recognized by the computer, and then send the digital signal to the computer for processing. The accuracy and speed of the data acquisition system determine the system performance. An important factor for good or bad. At present, most of the data acquisition products in the domestic and foreign markets are acquisition devices with single-chip microcomputer, DSP or FPGA as the control center of the acquisition system, and PCI and PXI b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
CPCG06F13/4068
Inventor 敖飞平王海勇赵维刚
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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