Integrated Pressure And Temperature Sensing With Glass-Isolated TO Pins
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional combined pressure and temperature sensing devices are limited in their capabilities, necessitating the development of a single sensing device that can accurately measure both pressure and temperature in industrial applications.
Innovation Solution
A combined pressure and temperature sensing device comprising a pressure detector and a temperature probe enclosed within a glass case, with a thermally conductive and electrically insulated fluid to isolate the TO header pins, and a PCBA to process data from both sensors, allowing integration with computing equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two different sensors are used to monitor pressure and temperature, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines a pressure sensor and a temperature sensor into a single integrated sensing device. The pressure sensor includes a diaphragm and detection unit, while the temperature sensor is positioned adjacent to it. Both sensors share common structural elements such as the housing, diaphragm, and fluid-filled chamber, allowing simultaneous measurement of pressure and temperature without requiring two separate devices.
2Ease of operation
If a single sensing device measures both pressure and temperature, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The sensing device is segmented into distinct functional zones: a pressure sensing region with the diaphragm and pressure detection unit, and a temperature sensing region with the temperature sensor positioned adjacent to the diaphragm. This spatial segmentation allows each sensor to independently measure its respective parameter without interference, maintaining high measurement precision while providing ease of operation through a single integrated device.
3Ease of manufacture
If TO header pins are exposed to media, then ease of manufacture is improved, but reliability deteriorates
Solution Approach 1:
The patent introduces an insulating material as an intermediary substance that fills the chamber and surrounds the TO header pins. This insulating material electrically isolates the TO header pins from the process media while allowing thermal energy to pass through to the temperature sensor. The intermediary material thus protects the electrical components from the media environment, ensuring reliability without complicating the manufacturing process.
4Reliability
If glass case encloses TO header pins, then reliability is improved, but heat conduction deteriorates
Solution Approach 1:
The patent changes the thermal parameters of the insulating material filling the chamber. While the material provides electrical insulation for the TO header pins, it is specifically selected to have adequate thermal conductivity to allow heat transfer from the media to the temperature sensor. The material's thermal and electrical properties are optimized to simultaneously achieve reliability through electrical isolation and adequate heat conduction for temperature measurement.
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 device provides accurate measurement of pressure and temperature over a wide range, with enhanced durability and operational reliability, enabling integration in various industrial settings.
Implementation Method 1
The first material corresponds to a thermally conductive and electrically insulated fluid that is configured to conduct heat energy of the media to the TO header pins
Implementation Method 2
the incompressible oil is configured to transfer pressure exerted by the media over the at least one diaphragm to the pressure detector for sensing the pressure of the media
Data Source
AI summary
A combined pressure and temperature sensing device and method is disclosed. The combined pressure and temperature sensing device comprises a pressure detector configured to sense a pressure of a media, a temperature probe disposed within a capsule and electrically coupled with transistor outline (TO) header pins. Further, the temperature probe is configured to sense temperature of the media. Thereafter, the TO header pins are enclosed within a glass case attached to the capsule that is configured to isolate the TO header pins from the media.