Light Fixture Tightness Testing With Integrated Pressure Sensing
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Solution Overview
Problem
Existing light fixtures face challenges in conducting tightness tests efficiently and cost-effectively, requiring external equipment and frequent relocation, which leads to high intervention costs and risks of internal damage due to undetected deterioration.
Innovation Solution
Integration of a test device within the light fixture comprising a pump, pressure sensor, venting device, and control device to create a pressure difference within the casing, allowing for remote and continuous tightness assessment without structural modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external equipment is used to test tightness, then measurement precision is improved, but device complexity and loss of time increase
Solution Approach 1:
The patent merges the tightness test device with the light fixture itself, integrating the pump, pressure sensor, and control unit into the fixture's internal structure. This eliminates the need for separate external testing equipment while maintaining measurement precision through the embedded sensor system that monitors pressure changes within the fixture's housing.
Solution Approach 2:
The light fixture performs its own tightness testing autonomously using internally integrated components. The pump creates pressure differential, the pressure sensor detects changes, and the control unit evaluates sealing status without requiring external intervention or specialized testing equipment, thereby reducing device complexity while preserving measurement capability.
2Measurement precision
If external equipment is used to test tightness, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The integrated test device enables the light fixture to perform self-diagnosis of tightness issues at any time without requiring external intervention. The autonomous system can detect sealing deteriorations immediately when they occur, eliminating the delays associated with scheduling external testing appointments and transporting equipment to the fixture location.
Solution Approach 2:
The pressure sensor continuously monitors internal pressure changes and provides real-time feedback to the control unit about sealing status. This continuous monitoring enables immediate detection of tightness issues as they develop, allowing for prompt intervention before damage occurs, thereby reducing the time loss associated with periodic external testing.
3Ease of operation
If light fixture is relocated for testing, then ease of operation is improved, but loss of time and productivity decrease
Solution Approach 1:
The light fixture performs tightness testing autonomously in its installed position without requiring relocation. The integrated pump and pressure sensor system operates within the fixture's housing, allowing testing to be conducted at the fixture's location regardless of where it is installed, thereby eliminating time loss from transportation and relocation activities.
4Loss of time
If tightness testing is not carried out systematically, then loss of time is reduced, but reliability decreases
Solution Approach 1:
The continuous pressure monitoring provides ongoing feedback about sealing status, enabling systematic tightness detection without requiring frequent manual testing interventions. The real-time data collection and analysis automatically identify sealing deteriorations as they occur, maintaining high reliability through continuous monitoring while avoiding the time consumption of repeated manual testing operations.
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 simple, cost-effective, and timely tightness testing in any condition and location, reducing the need for external equipment and preventing internal damage by detecting sealing issues promptly.
Implementation Method 1
a pump fluidically communicating with the at least one inner chamber and the environment outside the casing; a control device configured to: control the activation of the pump... in such a way that a pressure difference is created between the at least one inner chamber and the environment outside the casing
Implementation Method 2
at least one pressure sensor arranged in the at least one inner chamber; acquire data detected by the at least one pressure sensor... assess the sealing level of the casing on the basis of the pressure data acquired
Implementation Method 3
a venting device coupled to an opening of the casing and configured to selectively equalise the pressure between the at least one inner chamber and the environment outside the casing
Data Source
Figure 1~2
Figure 3~4
AI summary
A light fixture comprising: at least one casing (2) configured to define at least one inner chamber (7) having a given volume; at least one test device (10) configured to test the tightness of the at least one casing (2) and comprising: • a pump (11) fluidically communicating with the at least one inner chamber (7) and the environment outside the casing (2) ; • at least one pressure sensor (12) arranged in the at least one inner chamber (7); • a venting device (14) coupled to an opening (18) of the casing (2) and configured to selectively equalise the pressure between the at least one inner chamber (7) and the environment outside the casing (2); • a control device (15) configured to: - control the activation of the pump (11) and the venting device (14) in such a way that a pressure difference is created between the at least one inner chamber (7) and the environment outside the casing (2); - acquire data detected by the at least one pressure sensor (12) in an acquisition time interval; - assess the sealing level of the casing (2) on the basis of the pressure data acquired.