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Data collection system based on digital conditioning

A data acquisition system, digital technology, applied in control/regulation systems, general control systems, instruments, etc., can solve problems such as high accuracy and difficulty, and achieve the effect of high modifiability and portability

Active Publication Date: 2018-11-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This function is realized by DAC in the existing signal conditioning method. The accuracy of the DC signal is guaranteed by the performance of the DAC and related devices. It is difficult to achieve higher accuracy.

Method used

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  • Data collection system based on digital conditioning
  • Data collection system based on digital conditioning
  • Data collection system based on digital conditioning

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Embodiment

[0022] figure 2 It is a structural diagram of a specific embodiment of the data acquisition system based on digital quantity conditioning in the present invention. Such as figure 2 As shown, the data acquisition system based on digital quantity conditioning in the present invention includes an AC-DC coupling module 201 , an attenuation module 202 , an ADC module 203 , a digital quantity conditioning module 204 , a data processing module 205 and a host computer 206 .

[0023] The AC-DC coupling module 201 is used to couple the analog input signal according to the AC-DC coupling mode selection signal set by the user, and send the coupled analog signal to the attenuation module 202 .

[0024] The attenuation module 202 is used to attenuate the received analog signal according to a preset attenuation factor, and send the attenuated analog signal to the ADC module 203 . In this embodiment, the corresponding amplitude gear is selected according to the amplitude of the analog sig...

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Abstract

The invention discloses a data collection system based on digital conditioning. An AC / DC coupling module is used for AC / DC coupling of an analog input signal, and then an attenuation module performs the attenuation of the obtained analog signal. An ADC module collects the obtained analog signal, and transmits the collected signal to a digital conditioning module implemented by an FPGA, and the digital conditioning module processes the collected signal in a binary digital processing manner, and the obtained conditioned signal is processed by a data processing module and sent to an upper computer for display. The system performs the digital conditioning of the collected signal, improves the precision of signal conditioning, and avoids the impact on the performances of a design system from the parameter indexes which are brought by a hardware conditioning circuit and cannot be improved.

Description

technical field [0001] The invention belongs to the technical field of data acquisition systems, and more specifically relates to a data acquisition system based on digital quantity conditioning. Background technique [0002] The signal conditioning circuit is a necessary part of the analog signal acquisition circuit in the power control system. After signal conditioning, the analog signal is converted into the electrical quantity required by the user and sent to the sampling chip or the system's own analog-to-digital converter. Commonly used to deal with different amplitude ranges and different sampling signal frequencies of digital oscilloscopes, rough conditioning of analog signals is required before entering the collected data to meet the needs of the acquisition chip design and output the quantized results of the ADC. If and only when the user needs to adjust the display effect of the analog signal, the corresponding control command can be sent through the host computer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/042
Inventor 程玉华许波陈凯何小双王伊凡苟轩赵佳唐宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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