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Multi-channel DAC control system and method based on FPGA

A control system and multi-channel technology, applied in the field of FPGA-based multi-channel DAC control system, can solve the problems of slow output speed, high hardware cost, poor synchronization of multi-channel DAC control system, and achieve reduced hardware cost and good synchronization , the effect of the same clock frequency

Pending Publication Date: 2022-08-02
湖南恩智测控技术有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes a multi-channel DAC control system and method based on FPGA, which can solve the problems of slow output speed, poor synchronization and high hardware cost of the multi-channel DAC control system

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  • Multi-channel DAC control system and method based on FPGA
  • Multi-channel DAC control system and method based on FPGA
  • Multi-channel DAC control system and method based on FPGA

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Embodiment Construction

[0032] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0033] In the description of the invention, it should be understood that the azimuth descriptions, such as up, down, front, rear, left, right, etc., indicate the azimuth or positional relationship based on the azimuth or positional relationship shown in the accompanying drawings, only for the purpose of It is convenient to describe the present invention and to simplify the description, rather than indicating or implying that the device or element referred to must have a particular orient...

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Abstract

The invention discloses a multi-channel DAC control system and method based on FPGA, the system comprises an MCU, a plurality of FPGAs, a crystal oscillator, a plurality of multi-channel DACs and a plurality of analog switches, the MCU sends analog switch signals, output level signals and periodic signals to the plurality of FPGAs, the FPGA configures the output level signals to each output channel of the multi-channel DACs, and each output channel of the multi-channel DACs outputs the periodic signals. All channels of the multi-channel DAC convert and output analog signals at the same time, meanwhile, the FPGA outputs and switches analog switch signals according to newly-configured periodic signals, the analog switch selects output channels according to the analog switch signals sent by the FPGA, high-precision and high-speed output is achieved, more output channels can be expanded according to needs, and the output efficiency is improved. Compared with a single-channel DAC, the multi-channel DAC needs fewer chips, under the condition that the same precision and speed are achieved, the hardware cost is greatly reduced, a plurality of FPGAs share the same crystal oscillator, and the synchronism is good.

Description

technical field [0001] The invention relates to the technical field of DAC control, in particular to an FPGA-based multi-channel DAC control system and method. Background technique [0002] DAC, also known as D / A converter, is a device that converts digital quantities into analog quantities. Conventional multi-channel DAC control output technology controls multiple single-channel DAC outputs through MCU. This technology is limited in the number of output channels. To achieve simultaneous output of ten or hundreds of output channels, a large number of single-channel DACs are required. , its synchronization is poor, and the high-precision single-channel DAC often has a slow output speed, which requires level conversion output one by one, which cannot achieve high-speed output. Single-channel DACs that meet the requirements of high-precision high-speed output are expensive. SUMMARY OF THE INVENTION [0003] The present invention aims to solve at least one of the technical pr...

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 吴宏杨细芳张超
Owner 湖南恩智测控技术有限公司
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