Coaxial Surge Protection Circuit for Power and Data Branches
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power over Coaxial (PoC) systems face electrical surges that can damage equipment, and existing surge protection circuits are inadequate in effectively managing these transient overvoltages, which can be caused by internal or external factors such as device malfunctions or lightning strikes.
Innovation Solution
A circuit design incorporating a coaxial cable interface, data and power modules, with electrical surge protection circuits that include inductors, capacitors, resistors, and gas discharge tubes to manage and release surge currents, ensuring both data and power signals are protected by sequential protection mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surge protection circuits are used in PoC systems, then basic surge protection is provided, but the circuits cannot effectively manage transient overvoltages caused by internal or external factors
Solution Approach 1:
The surge protection function is divided into multiple independent circuits: a first surge protection circuit connected to the data signal transmission branch, a second surge protection circuit connected to the power signal transmission branch, and a third surge protection circuit connected to the common branch. Each circuit independently protects specific parts of the system, improving overall protection effectiveness while maintaining modular complexity
Solution Approach 2:
The patent extends protection from traditional single-branch approaches to a multi-dimensional protection architecture covering data signal transmission branch, power signal transmission branch, and common branch simultaneously, creating comprehensive spatial coverage of surge protection
2Reliability
If multiple protection circuits are added to protect both data and power signals, then surge protection coverage is improved, but the circuit complexity increases
Solution Approach 1:
Each surge protection circuit is designed with multi-functionality: they can handle both internal surges from device operations and external surges from environmental factors. The circuits share common components like the coaxial cable interface and ground connection, reducing overall system complexity despite multiple protection points
Solution Approach 2:
Different surge protection circuits are strategically placed at different locations: the first circuit protects the data signal transmission branch near the data module, the second circuit protects the power signal transmission branch near the power module, and the third circuit protects the common branch. This localized protection approach optimizes response time and effectiveness for each specific threat 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
The proposed solution effectively protects both data and power modules from electrical surges by releasing surge currents and reducing parasitic capacitance, thereby preventing damage and ensuring reliable operation of PoC systems.
Implementation Method 1
a gas discharge tube (GDT) that are connected in series
Implementation Method 2
a capacitor (C3) that allows the data signal to pass
Implementation Method 3
an inductor (L) that allows the power signal to pass
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A circuit comprises a coaxial cable interface (J), a data module (114), a power module(111), a power signal transmission branch, and a data signal transmission branch. The data module (114) may receive or output a data signal. The power module (111) may receive or output a power signal. The power signal transmission branch may be electrically coupled between the coaxial cable interface (J) and the power module (111), and may include an inductor (L) that allows the power signal to pass. The data signal transmission branch may be electrically coupled between the coaxial cable interface (J) and the data module (114), and may include a capacitor (C3) that allows the data signal to pass and a first electrical surge protection circuit (210). The first electrical surge protection circuit (210) may release a surge current on the data signal transmission branch.