Cryogenic Circuit Thermal Platform for SQUID Temperature Uniformity

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Solution Overview

Problem

Previous direction finding systems using SQUID sensors are compromised by temperature differences due to ambient thermal and radiation effects, leading to noise that obscures signal detection.

Innovation Solution

A platform with a cold distribution plate, cold blades, and heaters, controlled by a thermal regulator, maintains precise temperature uniformity across cryogenic electronic circuits, compensating for environmental temperature variations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If SQUID sensors are used for direction finding, then signal detection capability is improved, but temperature differences cause noise that obscures the signal

Engineering Contradiction:
Improvesignal detection capabilityVSAvoidtemperature difference noise
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by providing independent temperature control for each SQUID sensor through individual heaters and thermal regulators. Each sensor module receives customized thermal management tailored to its specific thermal environment and requirements, allowing precise temperature compensation without affecting other sensors. This localized approach eliminates temperature difference noise while preserving the signal detection capability of each SQUID sensor.

Inventive Principle:
Principle #3Local quality

2Stability of the object's composition

If thermal regulation is implemented for each sensor, then temperature uniformity is improved, but device complexity increases

Engineering Contradiction:
Improvetemperature uniformityVSAvoidthermal regulation system complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent segments the thermal regulation system into independent modular units, with each SQUID sensor having its own heater and thermal regulator. This segmentation allows each module to be designed and controlled independently, simplifying the overall system architecture while achieving uniform temperature control. The modular approach reduces complexity compared to a centralized thermal regulation system.

Inventive Principle:
Principle #1Segmentation

3Reliability

If cryogenic cooling is applied, then sensor performance is improved, but environmental temperature variations affect measurement accuracy

Engineering Contradiction:
Improvesensor performanceVSAvoidenvironmental temperature variations
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements feedback control through thermal regulators that continuously monitor the temperature of each SQUID sensor and adjust the heater power accordingly. This closed-loop feedback system compensates for environmental temperature variations in real-time, maintaining optimal sensor performance despite changing external conditions. The feedback mechanism ensures stable measurements by actively counteracting environmental disturbances.

Inventive Principle:
Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The platform achieves high thermal control and temperature uniformity, enhancing the accuracy of SQUID sensor measurements by minimizing noise from temperature fluctuations.

Implementation Method 1

The cold distribution plate couples to a cryogenic cooler for cooling the cold distribution plate

Methodology Applied
Scientific EffectCryogenic cooling: Cryogenics

Implementation Method 2

The heaters heat the cold blades, with the heaters including a respective heater disposed at each of the cold blades

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 3

The thermal regulator controls the heaters to maintain a predetermined temperature at each of the cryogenic electronic circuits

Methodology Applied
Scientific EffectThermal regulation: Feedback

Implementation Method 4

The cold blades contact and extend from a periphery of the cold distribution plate. The cold blades support and cool the cryogenic electronic circuits

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12467986B2Platform for precise thermal regulation of cryogenic electronic circuits
Publication Date: 2025.11.11 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
  • US12467986B2 patent drawing
  • US12467986B2 patent drawing

AI summary

A platform provides precise thermal regulation of cryogenic electronic circuits. The platform includes a cold distribution plate, cold blades, heaters, and a thermal regulator. The cold distribution plate couples to a cryogenic cooler for cooling the cold distribution plate. The cold blades contact and extend from a periphery of the cold distribution plate. The cold blades support and cool the cryogenic electronic circuits, which include a respective cryogenic electronic circuit disposed on each of the cold blades. The heaters heat the cold blades, with the heaters including a respective heater disposed at each of the cold blades. The thermal regulator controls the heaters to maintain a predetermined temperature at each of the cryogenic electronic circuits.