Power Supply Abnormality Detection via Bus Line Interface
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Solution Overview
Problem
Existing power supply management and control systems have complex circuit configurations due to the need for microcontrollers to monitor and control output current, requiring additional terminals and circuits for current measurement.
Innovation Solution
A power supply apparatus with a simplified circuit configuration that includes a voltage generation circuit, an abnormality detection circuit, an interface circuit, and an abnormality control circuit connected via a bus line, allowing for abnormality detection and control signal transmission between power supply units, eliminating the need for complex microcontroller connections and current measurement circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a microcontroller is used to monitor and control output current, then the power supply management function is improved, but the circuit configuration becomes complicated
Solution Approach 1:
The patent extracts the microcontroller from the power supply apparatus, separating the control function from the power supply unit. The microcontroller is placed in an external management device, which communicates with the power supply apparatus via a simple terminal connection. This extraction eliminates the need for complex internal control circuits within the power supply apparatus while maintaining automated management capabilities through external monitoring and control.
Solution Approach 2:
The terminal in the power supply apparatus is designed to serve multiple functions: it receives output current signals for monitoring and transmits control signals for managing power supply states. This multi-functional terminal simplifies the circuit configuration by eliminating the need for separate dedicated circuits for current measurement and control signal transmission, thereby reducing overall device complexity while maintaining comprehensive management functionality.
2Measurement precision
If additional terminals and circuits are added for current measurement, then the monitoring capability is improved, but the device complexity increases
Solution Approach 1:
The terminal is designed as a multi-functional component that simultaneously handles output current signal reception and control signal transmission. This universal terminal eliminates the need for separate dedicated terminals and circuits for current measurement, thereby maintaining monitoring capability while reducing the number of components and simplifying the overall circuit configuration.
Solution Approach 2:
The complex current measurement and control circuits are extracted from the power supply apparatus and relocated to an external management device. The power supply apparatus retains only a simple terminal for signal exchange, which significantly reduces the number of terminals and circuits within the power supply unit while preserving full monitoring and control capabilities through the external device.
Data Source
AI summary
A power supply apparatus connected via a bus line to another power supply apparatus includes a voltage generation circuit generating a voltage, an abnormality detection circuit detecting an abnormality of the power supply apparatus including the abnormality detection circuit and outputting an abnormality detection signal, an abnormality control circuit, and an interface circuit receiving the abnormality detection signal from the abnormality detection circuit to output the signal via the bus line to another power supply apparatus, and receiving the abnormality detection signal via the bus line from another power supply apparatus to output the signal, to the abnormality control circuit and the abnormality control circuit controlling the voltage generation circuit to stop generation of the voltage in a case where receiving the abnormality detection signal from the abnormality detection circuit or in a case where receiving the abnormality detection signal from the interface circuit.