Movable Communication Interface for PCB Functional Testing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current test systems for printed circuit boards lack the capability for functional testing, particularly for data paths and communication modules like USB or Ethernet connectors, which are essential for data transfer between circuit boards or external devices.
Innovation Solution
A test system with a movable communication interface and a test module equipped with a data memory, communication chip, and processor, allowing for data exchange and protocol selection, along with resilient contact tips for optimal positioning and reduced mechanical damage, enables functional testing of circuit boards with various communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If generic test systems are used for printed circuit boards, then basic electrical connection testing is possible, but functional testing of communication modules and data paths is not possible
Solution Approach 1:
The test system integrates multiple communication interfaces (USB, Ethernet, SD card) into a single universal test platform. The communication interface unit can adapt to different communication protocols through software configuration, allowing one device to perform multiple testing functions rather than requiring separate specialized test equipment for each communication type.
Solution Approach 2:
A communication interface unit acts as an intermediary between the test module and the device under test. This intermediary contains the necessary communication chips and protocols to bridge the gap between the generic test system and specific communication modules, enabling functional testing without directly modifying the core test system architecture.
2Reliability
If rigid contact tips are used for testing, then stable electrical contact is achieved, but mechanical damage to contact areas occurs
Solution Approach 1:
The contact tips are designed with spring mounting that allows their mechanical properties to change dynamically. When force is applied during testing, the contact tips deform elastically to sink into the housing section, changing their position parameter to reduce mechanical stress on the contact areas while maintaining electrical contact through the deformation.
Solution Approach 2:
The spring-mounted contact tips provide beforehand cushioning by being pre-loaded with elastic energy. This cushioning effect absorbs mechanical shocks and reduces peak forces during contact, preventing damage to the contact areas on the circuit board or communication module before damage can occur.
3Ease of operation
If fixed communication interface positioning is used, then alignment simplicity is maintained, but optimal positioning and contacting of various devices is difficult
Solution Approach 1:
The communication interface unit is mounted on the movable test module, inheriting its mobility in at least two spatial directions. This dynamic positioning capability allows the interface to adapt to different device locations and orientations on the circuit board, maintaining ease of operation through automated movement rather than manual alignment while achieving optimal contact positions.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Disclosed is a test system (1) for testing electric connections, in particular soldered connections, between electronic components and a printed circuit board (6) to be tested, characterized in that the test system (1) includes a communication interface (5) which, upon entering into contact with the circuit board (6), allows data to be exchanged with a data store (10) or a communication module (9) of the circuit board (6) to be tested, the communication interface (5) being arranged in a housing (1a) of the test system (1) in such a way as to be freely movable in at least two, preferably three directions in space (X, Y, Z).