RF Antenna Positioning for Wireless Pressure Sensors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pressure measuring devices for pressurized gas bottles require a compact structure with low energy consumption and efficient data transmission and reception capabilities, especially when attached to a tap, but existing solutions do not adequately address these requirements.
Innovation Solution
A pressure measuring device with a radiofrequency antenna positioned along the central longitudinal axis of a connector, allowing for efficient wireless communication and energy transfer, and incorporating a temperature sensor for pressure correction using calibration coefficients, enabling precise and accurate pressure measurement and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the antenna is positioned away from the central longitudinal axis to facilitate assembly, then ease of manufacture is improved, but data transmission reliability deteriorates due to misalignment with the reading component
Solution Approach 1:
The patent deliberately positions the antenna asymmetrically relative to the connector's central longitudinal axis, specifically at a distance of 1-3mm from the axis. This asymmetric positioning creates a unique spatial relationship that ensures proper alignment with the reading component's antenna during connection, resolving the contradiction between ease of manufacture and data transmission reliability
Solution Approach 2:
The antenna is pre-positioned at an optimal distance (1-3mm) from the central axis during manufacturing, before assembly. This preliminary positioning ensures that when the connector is assembled to the reading component, the antennas are automatically aligned at the correct spacing for reliable RF communication, eliminating the need for post-assembly adjustment
2Reliability
If the antenna is positioned close to the central longitudinal axis for optimal data transmission, then data transmission reliability is improved, but manufacturing precision requirements worsen
Solution Approach 1:
The patent specifies a local positioning requirement for the antenna: exactly 1-3mm from the central longitudinal axis. This localized precision requirement focuses manufacturing attention on the critical antenna position while allowing other parts of the connector to be manufactured with standard tolerances, balancing reliability needs with manufacturing capabilities
Solution Approach 2:
The patent defines a specific parameter range (1-3mm distance from axis) for antenna positioning rather than requiring exact centering. This parameter specification provides a tolerance window that maintains reliable data transmission while accommodating normal manufacturing variations, reducing the stringency of precision requirements
3Volume of moving object
If the device structure is made compact to reduce space, then volume is reduced, but antenna transmission capability deteriorates
Solution Approach 1:
The patent positions the antenna in a specific spatial dimension: 1-3mm laterally from the central axis of the connector. This dimensional positioning optimizes the antenna's electromagnetic field distribution and coupling with the reading component, achieving reliable transmission within the compact device volume without requiring additional space
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 solution provides a compact, energy-efficient pressure measuring device with improved data transmission capabilities and accurate pressure measurement, correcting for temperature variations, ensuring reliable operation in pressurized gas applications.
Implementation Method 1
the diaphragm comprising a pressure sensor of the piezoelectric type generating an electrical signal representative of the pressure measured
Implementation Method 2
a transmission/reception antenna of the radiofrequency type fitted on the said electronics board in order to receive and transmit data from and to the electronic logic
Data Source
AI summary
Pressure measuring device, comprising a connector extending along a longitudinal direction around a central longitudinal axis, the connector comprising a first longitudinal end intended to be fixed to an element containing pressurized gas, and a second longitudinal end provided with a diaphragm intended to be subjected to the pressure, the diaphragm comprising a pressure sensor of the piezoelectric type generating an electrical signal representative of the pressure measured, the pressure sensor being connected to an electronics board comprising electronic logic for processing the electrical signal of the sensor, the device furthermore comprising a transmission/reception antenna of the radiofrequency type fitted on the electronics board in order to receive and transmit data from and to the electronic logic, the electronics board being housed in a protective casing fixed to the connector, wherein the antenna is located on or adjacent to an axis passing through the central longitudinal axis of the connector.