Device and method for acquiring excitation data of superconducting magnets

Abstract

The invention discloses a device and a method for acquiring excitation data of superconducting magnets. The device comprises a master control module, detection modules and sensors. The master control module is separated from the detection modules and is connected with the detection modules by a serial bus, and the detection modules are respectively connected with the sensors; the detection modules at least include a liquid nitrogen temperature detection module, a liquid helium temperature detection module and a liquid helium level detection module. The method includes enabling the various detection modules to receive signals of the sensors, converting the analogue signals of the sensors into digital signals, and reporting the digital signals to the master control module via the serial bus; enabling the master control module to control the detection modules via the serial bus to switch channels and acquire data, and enabling the master control module to receive the reported digital signals. The device and the method have the advantages that a modular structure comprising the control module and the detection modules which are separated from one another is adopted, so that the requirement on the universality of the device for acquiring states of the superconducting magnets can be met, the expandability and the expansion flexibility are excellent, and functions and detection types are complete.

Description

technical field [0001] The invention relates to a data acquisition device and method, in particular to a superconducting magnet excitation data acquisition device and method. Background technique [0002] Superconducting magnets are the core key components of MRI equipment, and the superconductors used in superconducting magnets can only exhibit superconducting properties when certain conditions (such as temperature, magnetic field, and current density) are met. Once the conditions are destroyed, superconductors will undergo quenching. A small part of the superconductor ceases to be superconducting and enters a resistive state, any current flowing through this resistive part causes localized Joule heating, which causes quenching of adjacent parts of this superconductor, resulting in a larger resistive volume, This in turn leads to further Joule heating. [0003] Superconducting magnets may store energy on the order of megajoules. After quenching, these energies will be con...

AI Technical Summary

Problems solved by technology

[0004] At present, the superconducting magnet working state data acquisition device has a single detection type, and the number of acquisition channels cannot be expanded.

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