Adhesive Leak Sensor Tape with Resistance Lines
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Solution Overview
Problem
Conventional leak sensors face challenges such as high installation costs, limited length options, and cumbersome installation processes due to the need for brackets, as well as inaccuracies in detecting leakage positions, especially in high humidity environments and when sensing over wider areas.
Innovation Solution
A leak sensor apparatus in the form of an adhesive tape with a conductive line layer and resistance lines, allowing for easy installation without brackets, customizable length, and enhanced sensitivity through a mirror-shaped conductive line pattern and protection film with holes for exposure, enabling accurate detection of moisture and cuts in the tape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a cable type leak sensor is used, then accurate sensing of water leakage and recognition of leakage position is achieved, but installation cost increases and installation work becomes hard due to need for brackets
Solution Approach 1:
The patent uses a flexible band-shaped sensor body with adhesive properties that can be directly attached to surfaces without brackets. The sensor body is formed as a thin film structure containing conductive lines and resistance elements, eliminating the need for complex mounting hardware while maintaining sensing accuracy.
Solution Approach 2:
The patent combines the sensing function, mounting function, and structural support into a single integrated band-shaped sensor body. The adhesive layer is incorporated directly into the sensor structure, merging the bracket function with the sensor body itself, thereby simplifying installation while preserving measurement precision.
2Area of stationary object
If a band type leak sensor is used, then leakage sensing over wider area at lower cost is achieved, but measurement precision deteriorates due to errors in high humidity or external impact
Solution Approach 1:
The patent divides the sensing area into multiple segments by arranging multiple resistance lines and conductive lines in parallel along the band. Each segment can independently detect leakage, and the controller identifies the specific leakage position by determining which segment shows the resistance change, thereby maintaining precision over wide areas.
Solution Approach 2:
The patent creates different functional zones within the band structure by positioning specific resistance lines and conductive lines at different locations. The controller analyzes which local segment experiences leakage to determine position, allowing wide coverage while maintaining local measurement precision through spatial differentiation.
3Reliability
If conventional leak sensors are used, then leakage detection function is provided, but installation time increases due to need for brackets and connection devices
Solution Approach 1:
The sensor body possesses self-adhesive properties through the incorporated adhesive layer, allowing it to mount itself directly to surfaces without requiring separate brackets or mounting tools. The sensor also provides self-contained connection terminals that simplify electrical connection, reducing installation time while maintaining detection reliability.
4Ease of manufacture
If the length of sensor cable is limited to fixed options, then manufacturing simplicity is maintained, but adaptability deteriorates as customers cannot select desired length
Solution Approach 1:
The patent makes the sensor length dynamic and customizable by designing the band-shaped sensor body to be cuttable to any desired length. The continuous band structure with repeating sensing patterns allows users to trim the sensor to fit specific application requirements, providing adaptability while maintaining manufacturing simplicity through a single base design.
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 easy, cost-effective installation and accurate detection of moisture leaks over wider areas with reduced installation time and error, allowing for flexible tape lengths and seamless integration with controllers.
Implementation Method 1
when water contacts with an electric cable while current is flowing, a resistance value changes. So, a water leakage can be sensed depending on a varying resistance value.
Data Source
AI summary
A leak sensor apparatus for sensing moisture is disclosed, which is prepared in such a manner that a base film layer, a conductive line layer and a protection film layer are sequentially stacked on its lower surface in an upward direction, and said conductive line layer includes a resistance line having a certain resistance value per unit area in a longitudinal direction, and a conductive line which is spaced apart from the resistance line and is formed in parallel with respect to the resistance line, and said protection film layer is provided with a plurality of holes which are formed at regular intervals so that the resistance line and the conductive line of the conductive line layer can be exposed to the outside through the holes, respectively.