Capsule Sensor Sealing Structure to Prevent Current Leakage
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Solution Overview
Problem
Existing capsule sensors face issues with current leakage due to adhesive conductivity in the liquid state during the assembly and packaging process, leading to reduced shelf life and stability, and IC switches maintaining a standby current state even when turned off, which further shortens the sensor's lifespan.
Innovation Solution
A capsule sensor structure with a sealed housing, insulating layers on circuit components, and adhesive sealing rings to prevent current leakage, combined with a contactless switch and a filter membrane to protect against biological fluids, ensuring high waterproofness and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesives such as epoxy resin are used in the assembly and packaging process, then the sealing and bonding functions are achieved, but the adhesives have small conductivity in the liquid state resulting in current leakage and battery power loss
Solution Approach 1:
The patent applies preliminary action by pre-coating the circuit board with an insulating layer before adhesive application. This preventive measure ensures that even if adhesive spills during the assembly process, the insulating layer already in place prevents current leakage and battery power loss, resolving the contradiction between achieving strong bonding and preventing energy loss.
2Stability of the object's composition
If adhesives are dispensed during the packaging process, then sealing is achieved, but adhesive spillage into circuit components causes current leakage and damages the capsule sensor
Solution Approach 1:
The patent implements preliminary action by applying an insulating coating to the circuit board before the adhesive dispensing process. This pre-protection measure ensures that if adhesive spills occur during sealing, the insulating layer prevents current leakage and component damage, thereby maintaining both sealing integrity and device reliability.
Solution Approach 2:
The insulating layer acts as an intermediary between the adhesive and the circuit board. It allows the adhesive to be applied for sealing purposes while simultaneously preventing harmful electrical contact between the conductive adhesive and the circuit components, thus resolving the contradiction between sealing integrity and device reliability.
3Volume of moving object
If IC switches are used to replace mechanical switches, then smaller size and lower cost are achieved, but the IC switches have very small operating current when turned off resulting in standby status and shortened shelf life
Solution Approach 1:
The insulating layer serves as a mediator that completely isolates the IC switch from any conductive adhesive that might spill during assembly. This ensures that even though the IC switch operates in a standby state with minimal current, no additional current leakage occurs from adhesive contamination, thereby preserving the extended shelf life advantage of using compact IC switches.
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 enhances the sensor's shelf life, operational accuracy, and stability by preventing current leakage and adhesive contamination, maintaining high sealing strength and waterproof resistance.
Implementation Method 1
insulating layers on circuit components
Implementation Method 2
an accommodation slot and a cap, the accommodation slot being dispensed with an adhesive and bonded with the cap to form a seal structure
Implementation Method 3
a filter membrane to protect against biological fluids
Data Source
AI summary
A capsule sensor structure includes a housing, an assembly frame, an energy module, an actuation module and a control module, the housing is a capsule body including an accommodation slot and a cap, and the accommodation slot is assembled to the cap to form a seal structure. The assembly frame contains the energy module, and the actuation module and the control module are arranged at the top and bottom of the assembly frame respectively. The energy module is telecommunicatively connected to the actuation module and the control module, the control module is telecommunicatively connected to the actuation module and an external monitoring system. While the capsule sensor structure is put into a living organism, the control module receives an instruction of the monitoring system to drive the actuation module to perform biosignal detection or physical therapy and give an operation result to the monitoring system for remote monitoring.