Sniffing Probe Illumination for Dark Leak Detection
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Solution Overview
Problem
Sniffing probes face challenges in accurately tracing and identifying leaks in difficult-to-access and poorly lit environments, such as vehicle engine compartments or building shafts, due to the need for inconvenient flashlight use.
Innovation Solution
Integration of an illumination device at the handle-piece of the sniffing probe, which provides focused lighting only at the gas inlet opening, using low-power LEDs or other light sources, and includes switches for indicating readiness and gas concentration limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a flashlight is used to illuminate the environment, then the visibility in dark areas is improved, but the user's hands are occupied and the operation becomes inconvenient
Solution Approach 1:
The patent combines the illumination device with the sniffing probe handle-piece, integrating two separate functions (detection and illumination) into a single device. This allows the user to have both hands free while maintaining visibility in dark environments, resolving the contradiction between illumination and ease of operation
2Illumination intensity
If the illumination device emits light from all directions, then the overall illumination is improved, but the user may be blinded by the light
Solution Approach 1:
The patent implements directional illumination where the light is emitted only in the forward direction (distal to the gas inlet opening) and not toward the user. This creates localized illumination quality that illuminates the inspection area while avoiding harmful effects on the user's eyes, resolving the contradiction between illumination intensity and harmful factors
3Area of stationary object
If the illumination device is positioned far from the gas inlet opening, then the light coverage area is improved, but the illumination intensity at the detection region decreases
Solution Approach 1:
The patent uses an annular light outlet arrangement around the gas inlet opening, changing the spatial dimension of light emission. This multi-directional arrangement in the radial dimension provides both adequate coverage area and sufficient intensity at the detection region by distributing light sources around the circumference rather than using a single distant source
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
Facilitates reliable and one-handed operation in dark environments, preventing user blinding and ensuring accurate detection of gas leaks with direct optical indications of gas presence and concentration limits.
Implementation Method 1
the illumination device comprises an LED as a light source, said LED preferably emitting white, i.e. almost colorless, light
Data Source
AI summary
An illumination device is provided at the handle-piece of a sniffing probe, in which the illumination device illuminates the region to be inspected. This incorporation considerably facilitates handling of the sniffing probe in difficult-to-access and poorly illuminated regions, for sniffing probes used for detecting gases, for example, for detecting a gas leakage in a cooling device of a motor vehicle.