Heat Generation Resistor Circuit with Dual-Voltage Power Switching
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Solution Overview
Problem
Existing image processing apparatuses face challenges in supplying sufficient power to heaters in low-temperature environments while maintaining power efficiency, as conventional power supplies may become unstable when the driving system is highly loaded.
Innovation Solution
A dual DC power supply system is implemented, allowing the control unit to switch between a first DC power supply for control systems and a second DC power supply for driving systems, with adjustable resistor configurations to ensure stable heating by selectively using different voltage levels based on operational states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power supply is used to provide power to both control systems and heaters, then device complexity is reduced, but power stability deteriorates when the driving system is highly loaded
Solution Approach 1:
The power supply system is segmented into three independent power supplies: a first power supply for control systems, a second power supply for driving systems, and a third power supply dedicated to heaters. This segmentation isolates the heater power from fluctuations in the driving system, ensuring stable heating power even when the driving system is highly loaded.
2Reliability
If the heater is supplied with high power to ensure stable heating in low-temperature environments, then heating reliability is improved, but power consumption increases
Solution Approach 1:
The control system monitors the operational state of the driving system and automatically switches the heater's power source between the first power supply (when driving system is idle) and the third power supply (when driving system is highly loaded). This self-service mechanism ensures heating reliability is maintained during critical periods without continuously consuming high power.
3Reliability
If the heater is continuously operated to prevent dew condensation in low-temperature environments, then temperature control reliability is improved, but energy waste occurs when the apparatus is not in use
Solution Approach 1:
The system dynamically adjusts the heater's operational state based on the driving system status. When the driving system is highly loaded, the heater operates continuously using the third power supply to prevent dew condensation. When the driving system is idle, the heater can be turned off or operated at reduced power using the first power supply, reducing energy waste while maintaining temperature control reliability when needed.
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 approach ensures consistent and stable heating of heaters to prevent dew condensation, while minimizing power consumption by optimizing power usage based on the apparatus's operational mode.
Implementation Method 1
a resistor circuit section including at least one heat generation resistor configured to heat inside of the image processing apparatus
Data Source
AI summary
An image processing apparatus includes a first direct current power supply configured to output a first voltage; a second direct current power supply configured to output a second voltage that is higher than the first voltage; a resistor circuit section including at least one heat generation resistor configured to heat inside of the image processing apparatus; and a control unit configured to switch a power supply to supply the resistor circuit section with power between the first direct current power supply and the second direct current power supply.