Modular Power Supply Interface Card for Microwave Systems
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Solution Overview
Problem
Conventional power supply systems for microwave transmission systems are expensive to replace and require multiple units to be stocked, as they are designed for specific main chassis configurations, making maintenance and installation complex and costly.
Innovation Solution
A modular power supply system featuring a pluggable and replaceable power interface card with AC to DC conversion, digital voltage display, and isolation and protection units, which can be quickly swapped and supports multiple power supply cards, allowing for a single main chassis design to accommodate various devices, including backup power and voltage adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional power supply systems are designed for specific main chassis configurations, then the power supply system provides reliable power to the specific device, but the entire power system unit needs to be replaced if the power supply system fails, increasing cost and complexity
Solution Approach 1:
The power supply system is divided into separate modular components: a main chassis containing power conversion circuitry and a removable power supply card with identification logic. This segmentation allows the power supply card to be independently replaced without replacing the entire power system unit, reducing complexity and cost while maintaining reliability.
Solution Approach 2:
The main chassis is designed with a standardized card slot interface that can accommodate different types of power supply cards for various network devices. This universal interface allows a single main chassis design to support multiple device configurations, reducing the need to stock multiple specialized power system units.
2Reliability
If conventional power supply systems are specially configured for specific main chassis, then the power supply operates correctly with the designated device, but multiple different types of complete power systems need to be kept in stock for maintenance
Solution Approach 1:
The main chassis incorporates a universal card slot interface that can accept different power supply cards designed for various network devices. This allows a single main chassis unit to serve multiple device types, significantly reducing the inventory of specialized power systems needed for maintenance while ensuring correct operation through card-specific identification logic.
Solution Approach 2:
The power supply card includes an identification logic module that communicates device-specific parameters to the main chassis. This allows the main chassis to adjust its operation to match the specific requirements of the inserted card, enabling one chassis design to support multiple device configurations without compromising compatibility.
3Device complexity
If conventional power supply systems lack modularization, then the system structure is simpler, but the cost of replacement and maintenance increases significantly
Solution Approach 1:
The power supply system is segmented into a reusable main chassis and a replaceable power supply card. This modular structure simplifies the overall system architecture while enabling cost-effective maintenance through selective replacement of only the failed card rather than the entire power system unit.
Solution Approach 2:
The modular design allows the main chassis to be recovered and reused after a power supply card failure, with only the inexpensive card needing replacement. This approach significantly reduces maintenance costs by preserving the expensive main chassis components while discarding and replacing only the failed card component.
4Device complexity
If power supply systems do not include protection units, then the system design is simpler, but the system lacks protection from electrical surges and lightning
Solution Approach 1:
The power supply card includes an isolation and protection unit with voltage suppression and high voltage protection subunits that are built-in from the factory. These protection mechanisms are activated before electrical surges or lightning strikes can damage the system, providing preliminary defense against harmful factors while maintaining a relatively simple overall structure.
Solution Approach 2:
The isolation and protection unit acts as an intermediary between the power supply card and the connected network device. It mediates the electrical connection by blocking harmful voltage surges and lightning-induced transients while allowing normal power and data signals to pass through, thus protecting the device without requiring complex external protection systems.
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
This solution simplifies maintenance, reduces costs by enabling quick replacement of failed components, and supports multiple system equipment configurations, ensuring continuous operation with integrated protection against electrical surges and lightning strikes.
Implementation Method 1
a transformer unit coupled to the current sensor unit for receiving the working voltage and for electrically isolating a connected device from the working voltage while providing power thereto
Implementation Method 2
a fuse element for providing over-current protection from a working voltage
Implementation Method 3
a first LED coupled to an output of the threshold detection unit and is configured to be actuated in response to the detection output signal, wherein the first LED when actuated is indicative of power being supplied by the power interface card
Data Source
AI summary
A power supply system that includes a pluggable and replaceable modular power interface card and a separate main chassis component that can include AC to DC power conversion and regulation circuitry, a digital voltage display, and one or more card slots for receiving the power supply card. The modular power interface card can provide power to a network device that is connected thereto. The modular power interface card can include an isolation and protection unit that includes a voltage suppression subunit and a high voltage protection subunit, fusing, and a path to earth ground. The modular power interface card plugs into the main chassis and can be quickly replaced in the event of damage or failure, and can include light emitting diodes (LEDs) to indicate whether the remote device being powered is consuming current, which is useful during troubleshooting.