Wireless Cell Power Supply with Remote Switch Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless control systems for electric toys require a power switch to be manually operated to stop power supply, leading to unnecessary cell drainage when the toys are not in use, causing inconvenience and cell depletion.
Innovation Solution
A cell type power supply device with a wireless communication function that includes a housing, cell holder, output transistor, and control circuit to manage power supply based on RF signals, allowing remote control of power ON/OFF and reducing unnecessary power consumption by detecting the state of a power switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a power switch is provided in the device main body to control power supply, then power supply can be stopped manually, but the external cell is still drained when the electric toy is not in use and the user forgets to turn off the power switch
Solution Approach 1:
The wireless receiver drive automatically detects the power switch state and controls the power supply to the receiver drive circuit accordingly, without requiring user intervention. The system serves itself by monitoring the power switch and automatically cutting off power when the switch is OFF, preventing cell drainage from forgotten operations.
Solution Approach 2:
The system incorporates a feedback mechanism where the power switch state is detected and fed back to the power supply control circuit. This feedback loop enables automatic adjustment of power supply based on the power switch state, ensuring power is only supplied when intended by the user.
2Loss of energy
If the cell box is opened and the wireless receiver drive is removed to prevent cell drainage, then cell drainage is prevented, but the operation becomes inconvenient especially with screw fixing lids
Solution Approach 1:
The system automatically manages power supply based on power switch detection, eliminating the need for manual intervention to prevent cell drainage. Users simply operate the power switch as usual without needing to access the cell box or remove the wireless receiver drive.
Solution Approach 2:
The power supply control function is extracted from the mechanical cell box assembly and integrated into the wireless receiver drive circuitry. This separation allows the cell box to remain closed and secured while the electronic control system independently manages power consumption.
3Reliability
If the wireless receiver drive continuously receives power to maintain electrifying condition, then wireless control functionality is maintained, but the external cell drains continuously even when not in use
Solution Approach 1:
The power supply state dynamically changes based on the power switch detection. When the power switch is ON, the receiver drive circuit receives power and maintains wireless control availability. When the power switch is OFF, power supply is automatically cut off, preventing continuous drainage while the cell remains installed.
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
Enables remote control of power supply to electric toys, preventing cell drainage when not in use, reducing inconvenience and extending cell life by automatically managing power based on switch state and RF signals.
Implementation Method 1
an output transistor interposed between the inner negative terminal and the outer negative terminal or between the inner positive terminal and the outer positive terminal
Implementation Method 2
a detection resister interposed between the inner negative terminal and the outer negative terminal or between the inner positive terminal and the outer positive terminal in parallel with the output transistor to change a voltage of the outer negative terminal or the outer positive terminal with respect to a reference voltage in accordance with ON/OFF of the power switch
Implementation Method 3
a control circuit that generates a control signal of the output transistor in accordance with an RF signal received from an external information device via an antenna
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
An object is to reduce the consumption speed of an external cell. A cell type power supply device includes: a housing 118 having a shape and dimensions based on a cell standard; a cell holder 102 including an inner positive terminal 105 and an inner negative terminal 106 that are brought into contact with front and rear terminals of the external cell held in the housing; an outer positive terminal 103 connected to the inner positive terminal; an outer negative terminal 104 connected to the inner negative terminal; an output transistor 120 interposed between the inner negative terminal and the outer negative terminal or between the inner positive terminal and the outer positive terminal; a control circuit 122 that generates a control signal of the output transistor in accordance with a signal received via an antenna 127; and a detection resister 124 interposed between the inner negative terminal and the outer negative terminal or between the inner positive terminal and the outer positive terminal in parallel with the output transistor to change a voltage of the outer negative terminal or the outer positive terminal with respect to a reference voltage in accordance with ON/OFF of a power switch 114.