Segmented Valve Stem for Wireless Tire Pressure Sensor Mounting
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Solution Overview
Problem
Existing pressure sensors for tire pressure monitoring require removal to adjust air pressure, which is time-consuming, especially in large vehicles with multiple sensors.
Innovation Solution
A pressure sensing system with a circuit carrier and antenna on a substrate, including power supply and pressure sensor mounts, ancillary component mounts, and interconnections, allowing wireless transmission of pressure data without needing to remove the sensor from the valve stem.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure sensors are permanently installed on the pressurized system with threaded engagement, then the sensor remains securely mounted and continuously monitors pressure, but the sensor must be removed to adjust air pressure in the tire
Solution Approach 1:
The valve stem is divided into two functional parts: an upper portion with a valve actuator for pressure adjustment and a lower portion with a threaded section for sensor mounting. This segmentation allows the sensor to be mounted on the lower portion while the upper portion remains accessible for air pressure adjustment without removing the sensor.
Solution Approach 2:
The sensor mounting location is moved to a different spatial dimension - the lower portion of the valve stem - which is vertically separated from the valve actuator location. This dimensional separation allows simultaneous access to both the sensor (at lower level) and the valve actuator (at upper level) for independent operations.
2Measurement precision
If pressure sensors are individually installed on each wheel of a large transport truck, then each tire can be monitored independently, but the time required to adjust air pressure increases significantly
Solution Approach 1:
The valve stem is segmented into an upper actuator portion and a lower sensor mounting portion, allowing independent access to each component. This enables maintenance personnel to adjust air pressure on multiple wheels simultaneously while sensors remain permanently mounted, significantly improving service productivity.
Solution Approach 2:
The lower portion of the valve stem acts as an intermediary mounting structure that separates the sensor mounting function from the pressure adjustment function. This intermediary structure enables both functions to coexist without interference, allowing efficient multi-wheel servicing.
3Strength
If the pressure sensor is screwed onto the valve stem with threaded engagement, then the sensor is securely fixed, but access to the valve actuator is blocked
Solution Approach 1:
The valve stem is segmented into an upper portion containing the valve actuator and a lower portion with threaded engagement for sensor mounting. This segmentation physically separates the sensor attachment function from the pressure adjustment function, ensuring that secure sensor mounting does not block access to the valve actuator.
Solution Approach 2:
The sensor is mounted on the lower portion of the valve stem, vertically below the valve actuator. This vertical dimensional separation ensures that the sensor's threaded engagement does not interfere with horizontal access to the valve actuator, maintaining ease of operation while ensuring secure attachment.
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
Enables convenient and efficient monitoring of tire pressure without disrupting the air pressure adjustment process, reducing time and effort in large vehicle applications.
Implementation Method 1
the transmittable signal being operable to be radiated by the antenna, for wireless reception by a remote receiver
Data Source
AI summary
A method and apparatus for producing a circuit carrier for mounting components of a pressure sensing circuit, circuit carrier formed thereby, an apparatus for housing a pressure sensor circuit carrier to form a pressure sensing apparatus and a pressure sensing system using the pressure sensing apparatus and a coupler for coupling the pressure sensing apparatus to a pressurized system. A housing has provisions for aligning and urging a circuit carrier to sealingly position a pressure sensor adjacent an opening in a wall extending through of housing. The wall defines a pressure sensing chamber operable to cooperate with a pressure coupler having a profile that sealingly engages the wall.