IoT Plug PCB With Integrated EMC Protection for Long SPE Cables
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Solution Overview
Problem
Existing IoT devices face challenges in maintaining electromagnetic compatibility (EMC) protection, especially when connected via long hybrid single pair Ethernet cables without surge voltage protection circuits.
Innovation Solution
Integration of an EMC protection unit into the plug housing of IoT device connectors, utilizing a printed circuit board connected to a hybrid single pair Ethernet cable, which provides surge voltage protection and can extend cable lengths beyond 30 meters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If EMC protection measures are implemented in IoT devices, then electromagnetic compatibility protection is improved, but device complexity increases
Solution Approach 1:
The EMC protection unit is extracted from the IoT device and integrated into the plug instead. The patent states: 'An electromagnetic compatibility (EMC) protection unit is provided on the printed circuit board. The EMC protection is thus provided inside the plug housing.' This extraction reduces the complexity of the IoT device while maintaining EMC protection functionality through the plug's protection unit.
2Object-affected harmful factors
If surge voltage protection circuits are integrated into IoT devices, then protection against surge voltages is improved, but device complexity and cost increase
Solution Approach 1:
The surge voltage protection functionality is extracted from the IoT device and relocated to the plug's EMC protection unit. The patent specifies: 'protection against surge voltages is required for hybrid single pair Ethernet devices with a connection cable length of 30 m or longer. By using the plugs according to one aspect of the present invention the maximum length of the usable cables can be increased.' This allows IoT devices to avoid integrating complex surge protection circuits while still achieving protection through the plug.
Solution Approach 2:
The plug acts as an intermediary component that provides surge voltage protection between the Ethernet cable and the IoT device. The EMC protection unit in the plug serves as a mediator that protects the IoT device from surge voltages without requiring the device itself to have built-in protection circuits.
3Length of stationary object
If cable length is extended beyond 30 meters, then connectivity range is improved, but electromagnetic compatibility protection deteriorates
Solution Approach 1:
The EMC protection unit is installed in advance in the plug before connection to the IoT device. The patent states: 'An electromagnetic compatibility (EMC) protection unit is provided on the printed circuit board.' This preliminary protection measure ensures that even when cables longer than 30 meters are used, the EMC protection is already in place to handle surge voltages and electromagnetic interference, maintaining reliability despite extended cable length.
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 effectively enhances EMC protection for IoT devices, allowing for longer cable connections without the need for surge voltage protection circuits in the devices themselves, thus improving connectivity and reliability.
Implementation Method 1
An electromagnetic compatibility (EMC) protection unit is provided on the printed circuit board. The EMC protection is thus provided inside the plug housing.
Implementation Method 2
a seal is provided in the region of the second end of the printed circuit board between the plug-in face and the housing. Thus, a chamber or region is provided that is sealed by the housing and the seal.
Data Source
AI summary
A plug for connecting to an Internet-of-Things device is provided. The plug has a housing and a printed circuit board with a first and second end. The printed circuit board is provided in the housing. The first end of the printed circuit board is connected to a hybrid single pair Ethernet cable. The second end of the printed circuit board is provided with a plug-in face with contact surfaces, by means of which the plug can be coupled to the Internet-of-Things device. The plug also has an EMC protection unit in or on the printed circuit board.