Sensor Assembly Temperature Calibration via Nested Base Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pressure measurement devices face challenges in accurately calibrating temperature due to a temperature difference between the pressure detector and the temperature sensor, especially when measuring high-temperature fluids, as the temperature sensor attached to the circuit board cannot accurately measure the temperature of the pressure detection unit.
Innovation Solution
A sensor assembly is designed with a temperature sensor received in a cylindrical base member surrounding the sensor module, allowing the temperature detector to be positioned near the sensor module opposite the measurement target fluid, ensuring accurate temperature measurement and calibration, while simplifying the production process by eliminating the need for additional receivers in the joint and using a resin material for the base member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature sensor is attached to the circuit board to perform temperature calibration, then the temperature calibration can be performed using the measurement target fluid temperature, but the temperature sensor cannot accurately measure the temperature of the pressure detector when the fluid temperature is high due to heat transfer difference
Solution Approach 1:
The temperature sensor is nested within the cylindrical base member that surrounds the sensor module. The base member houses both the pressure detector on its inner surface and the temperature sensor inside it, creating a nested configuration where the temperature sensor is positioned adjacent to the pressure detector without exposing it to the measurement target fluid. This resolves the contradiction by enabling accurate temperature measurement of the pressure detector while maintaining a compact integrated structure.
2Temperature
If the temperature sensor is exposed to high-temperature measurement target fluid to measure fluid temperature, then fluid temperature measurement is achieved, but the pressure detector receives heat from the fluid while being cooled by ambient air, causing temperature difference between detector and sensor
Solution Approach 1:
The cylindrical base member acts as an intermediary structure that houses the temperature sensor in a protected environment. Instead of exposing the temperature sensor directly to the high-temperature measurement target fluid, the base member allows the sensor to measure the temperature of the pressure detector in a location that is cooled by ambient air, eliminating the harmful temperature difference while preserving temperature measurement capability.
3Measurement precision
If additional receivers are provided in the joint to accommodate the temperature sensor and lead wire, then the temperature sensor can be positioned near the sensor module, but the production process becomes more complex
Solution Approach 1:
The cylindrical base member serves multiple functions: it surrounds and protects the sensor module, provides mounting surfaces for the pressure detector, and simultaneously houses the temperature sensor and lead wire within its internal cavity. This multi-functional design eliminates the need for separate receivers in the joint, simplifying the production process while maintaining precise positioning of the temperature detector near the sensor module.
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
This configuration enables accurate temperature calibration of the pressure detector, even at high fluid temperatures, and streamlines the production process by facilitating assembly and eliminating the need for insulating treatments on lead wires.
Implementation Method 1
the temperature detector, which is cooled by ambient air in the same manner as the detector, can accurately measure the temperature of the detector
Data Source
AI summary
A sensor assembly includes: a sensor module including a cylindrical portion into which a measurement target fluid is introduced and a diaphragm including a first surface in contact with the measurement target fluid and a second surface provided with a detector; a joint provided with a pressure introduction port for introducing the measurement target fluid to the sensor module; a cylindrical base member surrounding the sensor module; an electronic circuit attached to the base member to receive a detection signal outputted by the detector; and a temperature sensor electrically connected with the electronic circuit. The temperature sensor includes a temperature detector for detecting temperature, and a lead wire electrically connecting the temperature detector and the electronic circuit. The base member is provided with a receiver for receiving the temperature detector and the lead wire.