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High speed data collection card for magnetic resonance system

A high-speed data acquisition and magnetic resonance technology, applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve the problems of lack of on-board data processing functions, low data acquisition bandwidth and sampling rate, and achieve Ease of Integration, High Analog Bandwidth, and High Single-Channel Sample Rate Effects

Active Publication Date: 2012-09-12
CHINAINSTRU & QUANTUMTECH (HEFEI) CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing data acquisition card has low data acquisition bandwidth and sampling rate and lacks on-board data processing functions suitable for magnetic resonance systems, the present invention proposes a high-speed data acquisition card for magnetic resonance systems

Method used

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  • High speed data collection card for magnetic resonance system
  • High speed data collection card for magnetic resonance system
  • High speed data collection card for magnetic resonance system

Examples

Experimental program
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Embodiment Construction

[0015] This specific embodiment provides a kind of high-speed data acquisition card for magnetic resonance system, such as figure 1 shown, including:

[0016] Two analog-to-digital conversion chips 11 are used to convert the sampling results of the input analog quantities into digital signals, and pack and send them to the main control module 12 in parallel;

[0017] The main control module 12 is used to process the sampling results carried in the digital signal, and output the processing results through the integrated PCIe interface. The processing includes averaging / accumulating, phase looping and digital intermediate frequency demodulation.

[0018] Specifically, such as figure 2 As shown, the two analog-to-digital conversion chips 11 can use a high-speed analog-to-digital conversion chip (ADC) to sample the analog quantities input in the two channels (CH1, CH2) respectively (the same channel can also be cross-sampled) , converting the sampling result into a digital sign...

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Abstract

The invention provides a high speed data collection card for a magnetic resonance system. The high speed data collection card comprises two analog-to-digital conversion chips, and a main control module. The analog-to-digital conversion chips change input sampling results of analog quantity to digital signals and send the digital signals to the main control module. The main control module is used for processing the sampling results carried in the digital signals and outputting the processing results. The processing includes average / accumulate, phase cycling and digital intermediate frequency demodulation. Through controlling the configurations of the main control module and the two analog-to-digital conversion chips, the high speed data collection card realizes a relatively wide analog bandwidth and a high single channel sampling rate. In addition, the high speed data collection card integrates a plurality of on-plate data processing functions used for the magnetic resonance system, and that provides convenience to set up a high speed magnetic resonance system.

Description

technical field [0001] The invention relates to a high-speed data acquisition card for a magnetic resonance system, belonging to the technical field of data acquisition. Background technique [0002] Data acquisition card refers to a computer expansion card that automatically collects non-electric or electrical signals from analog and digital units under test such as sensors and other devices under test. It has extremely wide applications in the fields of high-speed data acquisition and automated process control. [0003] When the data acquisition card is used as an integral part of a system, it is often required to process the received data and provide feedback signals. For this purpose, similar products on the market generally adopt a hardware-plus-software architecture, that is, the data acquisition card is only responsible for collecting data and transmitting the data to the supporting computer, and the post-processing and judgment of the data are handed over to the comp...

Claims

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Application Information

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IPC IPC(8): G06F3/05
Inventor 杜江峰荣星徐南阳王梓翔
Owner CHINAINSTRU & QUANTUMTECH (HEFEI) CO LTD
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