Solar Power Control Device Sunlight Detection Mode Switching
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Solution Overview
Problem
Existing solar power generation systems often start generating power even when there is insufficient sunlight, leading to increased power consumption and inefficient charging of power storage devices in vehicles.
Innovation Solution
A solar power generation control device that determines whether the irradiation light is sunlight or artificial light using an optical sensor, allowing it to switch between a charging mode and a low-power mode based on this determination, thereby optimizing power usage and reducing consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the solar power generation system is started when irradiation light is detected, then the power storage device can be charged with generated electric power, but the system may operate and consume power even when sufficient generated electric power cannot be expected
Solution Approach 1:
The determination unit performs preliminary identification of sunlight before the solar power generation system starts operating. By using the optical sensor to detect characteristic wavelengths of sunlight in advance, the system ensures that charging operations only begin when sufficient solar energy is available, preventing wasted power consumption during insufficient generation conditions
Solution Approach 2:
The optical sensor acts as an intermediary between the sunlight detection and the solar power generation system control. It detects the presence and characteristics of sunlight and provides this information to the determination unit, which then controls the operation mode, thereby mediating the decision-making process to avoid unnecessary power consumption
2Duration of action of moving object
If the solar power generation system operates continuously upon light detection, then charging can proceed without interruption, but power consumption increases when generated power is insufficient
Solution Approach 1:
The system performs preliminary sunlight verification before initiating continuous charging operations. The determination unit checks whether detected light is actually sunlight using the optical sensor, ensuring that prolonged charging operations only commence when sufficient solar energy is guaranteed, thereby preventing energy waste during insufficient generation periods
Solution Approach 2:
The determination unit continuously monitors the optical sensor output and provides feedback control to the solar power generation system. When sunlight is detected, the system operates in charging mode; when sunlight is not detected (even if other light sources are present), the system switches to low power consumption mode, creating a closed-loop feedback mechanism that prevents energy waste
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 control device effectively charges the power storage device with solar-generated power while minimizing the solar power generation system's power consumption, ensuring efficient energy use only when sufficient sunlight is available.
Implementation Method 1
an optical sensor that detects whether irradiation light to the vehicle is sunlight
Implementation Method 2
a solar cell provided in the vehicle
Data Source
AI summary
A solar power generation control device, controlling a solar power generation system configured to charge a power storage device of a vehicle with electric power generated by a solar cell provided in the vehicle, includes: a determination unit configured to determine whether irradiation light to the vehicle is sunlight based on an output of an optical sensor; and a control unit configured to control an operation mode of the solar power generation system, including a first mode, in which the power storage device is charged with electric power generated by the solar cell, and a second mode, in which power consumption of the solar power generation system is lower than in the first mode, based on a determination result of the determination unit. The control unit sets the solar power generation system to the first mode when the determination unit determines that the irradiation light is sunlight.