Apparatus and method for control of an electropermanent magnetic system

Patent metadata

Field	Value
Publication number	US-2022020518-A1
Application number	US-202117378268-A
Country	US
Kind code	A1
Filing date	Jul 16, 2021
Priority date	Jul 17, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

An apparatus and method are provided for implementing feedback control of the electropermanent magnets and also collecting information about magnetic fields emanating from a volume of interest containing a living being

First claim

1 . An apparatus for controlling an electropermanent magnetic field, the apparatus comprising:
at least one control sub-module, at least one electropermanent sub-module, and at least one monitoring sub-module, wherein the at least one monitoring sub-module contains at least one measurement structure for measuring a magnetic field at a location of the at least one monitoring sub-module.

2 . The apparatus as in claim 1 , where the measurement structure contains a sample of free electrons that are excited via electron spin resonance.

3 . The apparatus of claim 2 , wherein the at least one monitoring sub-module further comprises an antenna for measuring the magnetic spin state of the sample of free electrons.

4 . The apparatus of claim 1 , wherein the at least one electropermanent sub-module generates the magnetic field measured by the measurement structure.

5 . The apparatus of claim 1 , wherein the at least one control sub-module controls the generation of the magnetic field by the at least one electropermanent sub-module.

6 . The apparatus of clam 1 , wherein the at least one monitoring sub-module controls adjustment of the magnetic field generated by the at least one electropermanent magnet sub-module based on the measured magnetic field.

7 . The apparatus of claim 1 , wherein the at least one control sub-module, the least one electropermanent sub-module, and the at least one monitoring sub-module form a feedback loop so that the magnetic field generated by the electropermanent magnet sub-module is consistent with settings prescribed to the at least one control sub-module.

8 . The apparatus of claim 1 , wherein the spin status of the sample in the measurement structure is used to collect magnetic resonance images of an object.

9 . The apparatus of claim 1 , wherein the spin status of the sample in the measurement structure is used to collect magnetic encephalograms of an object.

10 . The apparatus of claim 1 , wherein the spin status of the sample in the measurement structure is used to alter the magnetic field of an object in a region of interest.

11 . The apparatus of claim 1 , wherein data obtained with the measurement structure is used to alter the magnetic field of an object in a region of interest.

12 . A method of controlling a magnetic field generation, the method comprising:
measuring a magnetic field using a spin status of at least one sample within at least one monitoring sub-module, and controlling the magnetic field generated by adjusting or maintaining the magnetic field based on the measured magnetic field compared to a predetermined desired magnetization state.

13 . The method of claim 12 , wherein the spin status of the sample in a measurement structure is assessed with electron spin resonance.

14 . The method of claim 12 , wherein the spin status of the sample in a measurement structure is used to collect magnetic resonance images of an object in a region of interest.

15 . The method of claim 12 , wherein the spin status of the sample in a measurement structure is used to collect magnetic encephalograms of an object in a region of interest.

16 . The method of claim 12 , wherein data obtained from the measurement structure is used to collect magnetic resonance images of an object in a region of interest.

17 . The method of claim 12 , wherein data obtained from the measurement structure is used to collect magnetic encephalograms of an object in a region of interest.

18 . The method of claim 12 , wherein data obtained from the measurement structure is used to estimate and/or affect the magnetic field of an object in a region of interest.

19 . The method of claim 12 , wherein the magnetic field is generated by one or more electropermanent magnets.

20 . The method of claim 12 , wherein the magnetic field is adjusted and measured again to determine if an adjusted magnetic field strength is equal to a predetermined magnetic field strength.

21 . The method of claim 20 , wherein imaging of an object in a region of interest is commenced in response to the adjusted magnetic field strength being equal to the predetermined magnetic field strength.

Assignees

• Weinberg Medical Physics Inc

Inventors

• Weinberg Irving N

Classifications

• G01R33/1284

  Spin resolved measurements; Influencing spins during measurements, e.g. in spintronics devices · CPC title

• G01R33/038

  using permanent magnets, e.g. balances, torsion devices · CPC title

• G01R33/02

  Measuring direction or magnitude of magnetic fields or magnetic flux (G01R33/20 takes precedence) · CPC title

• H01F7/20

  without armatures (cores H01F3/00; coils H01F5/00 {; shaping metal by applying magnetic forces B21D26/14; electromagnets specially adapted for NMR applications G01R33/381}) · CPC title

• H01F13/00

  Apparatus or processes for magnetising or demagnetising ({devices for holding workpieces using magnetic or electric force acting directly on the workpieces B23Q3/15} ; for degaussing ships B63G9/06; for clocks or watches G04D9/00; {recording or erasing of information on magnetic record carriers G11B5/00} ; demagnetising arrangements for colour television H04N9/29) · CPC title