IP Library Granted Patent US 11,921,171
Granted Patent B2
US 11,921,171 · App. 17/741,723 · Granted Mar 5, 2024

Space weather monitor system

Inventors: Mark B. Moldwin (Ann Arbor, MI); Lauro V. Ojeda (Ann Arbor, MI)
Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
G01R33/0206G01C21/24G01W1/10
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Quick Facts
Patent No.
US 11,921,171
App. No.
17/741,723
Granted
Mar 5, 2024
Kind
B2
Abstract

A magneto-inductive DC magnetometer is provided that is operable to output fluxgate quality measurements in a low mass, volume, power and cost package. The magnetometer enables constellation-class missions not only due to its low-resource requirements, but also due to its potential for commercial integrated circuit fabrication. In addition, the magnetometer will be part of a ground-based Space Weather Underground Citizen Science instrument package that enables dense arrays of space weather-relevant observations at mid-latitudes. The magneto-inductive operating principle is based on a simple resistance-inductor (RL) circuit and involves measurement of the time it takes to charge and discharge the inductor between an upper and lower threshold by means of a Schmitt trigger oscillator. This time is proportional to the inductance that in turn is proportional to the field strength.

Claims (14)

1. A space weather monitor system comprising:

a power system;

a communication system;

a magnetometer system having a circuit board and four magneto-inductive DC magnetometers, each of the four magneto-inductive DC magnetometers being mounted to an opposing corner of the circuit board;

a computing system operably coupled to the power system, the computing system having a resistance-inductor (RL) circuit having an inductor and a timing system measuring a time necessary to charge and discharge the inductor between an upper and lower threshold, the timing system having a Schmitt trigger oscillator, wherein the time necessary to charge and discharge the inductor is proportional to the inductance that in turn is proportional to a field strength, the computing system outputting a signal via the communication system; and

a plurality of sensors operably coupled to the computing system to refine and correct magnetic measurements, the plurality of sensors comprising inertial sensors configured to provide dynamic information, local weather sensors configured to provide data relating to local weather conditions, temperature sensors, humidity sensors, and a barometric pressure sensor; and

a dual frequency GPS unit configured to provide geolocation, time data, and atmospheric parameters using dual satellite radio signals, the atmospheric parameters including Total Electron Content.

2. The space weather monitor system according to claim 1 wherein the power system comprises a solar system.

3. The space weather monitor system according to claim 1 wherein the power system comprises an AC power system.

4. The space weather monitor system according to claim 1 wherein the power system comprises a battery power system.

5. The space weather monitor system according to claim 1 wherein the communication system comprises a Wi-Fi system.

6. The space weather monitor system according to claim 1 further comprising a remotely located computing system, wherein the communication system comprises an internet communication interface configured to transfer data to the remotely located computing system.

7. The space weather monitor system according to claim 6 wherein the remotely located computing system is a cloud-based system.

8. The space weather monitor system according to claim 7 wherein the cloud-based system is configured to support user queries.

Assignments (2)
CONFIRMATORY LICENSE Recorded Mar 27, 2025
From: UNIVERSITY OF MICHIGAN
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 070663/0460 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 21, 2022
From: MOLDWIN, MARK B.; OJEDA, LAURO V.
To: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
Reel/Frame 060262/0823 →
Continuity (2)
Provisional Application 63187099 · May 11, 2021
Related Publication 20220365148A1 · Nov 17, 2022