Projector Control Board Wireless Link to Eliminate Cable Loosening
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Solution Overview
Problem
The existing projection devices face issues with cable management during assembly and maintenance, as cables can become loosened with repeated disassembly and reassembly, leading to operational failures and increased manufacturing costs due to manual plugging and unplugging requirements.
Innovation Solution
A projection device design that eliminates the need for cables by using a wireless signal emitter and receiver, along with a conducting element, to transmit operation signals and power between the operation circuit board and main board, allowing for efficient signal and power transmission without physical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cable is used to connect the main board and the keypad board, then power transmission and signal transmission can be achieved, but the cable becomes loosened after repeated disassembly and reassembly, leading to operational failures
Solution Approach 1:
The patent replaces the mechanical cable connection system with a wireless communication system. The keypad board includes a wireless signal emitter that transmits operation signals wirelessly to the main board's wireless signal receiver, eliminating the need for physical cable connections and their associated reliability issues with repeated assembly and disassembly.
Solution Approach 2:
The patent introduces wireless electromagnetic waves as an intermediary medium to transmit signals between the keypad board and main board. This intermediary replaces the direct physical cable connection, allowing signal transmission without mechanical contact and thus avoiding cable loosening problems.
2Adaptability or versatility
If the cable length is extended to the margin to accommodate assembly variations, then connection flexibility is improved, but the cable occupies internal space of the projection device
Solution Approach 1:
The wireless communication system replaces the physical cable that would otherwise need to be routed through the device's internal space. The electromagnetic wave transmission requires no physical medium within the device, completely eliminating the space occupation issue while maintaining full connection flexibility.
3Ease of repair
If manual plugging and unplugging of the cable is required, then assembly and repair can be performed, but manufacturing cost significantly increases
Solution Approach 1:
The wireless signal transmission system eliminates the need for manual cable plugging and unplugging during assembly and repair. The operation signals are transmitted automatically via wireless communication, reducing manufacturing complexity and cost while maintaining full repairability of the device.
4Device complexity
If a cable connection system is used, then spatial coupling between the keypad board and main board is achieved, but the configuration is more easily affected by appearance design and internal part configuration
Solution Approach 1:
The wireless communication system replaces the cable-based spatial coupling mechanism. Since wireless signals can penetrate through the device structure, the keypad board and main board can be positioned independently based on appearance design and internal part configuration requirements without being constrained by cable routing limitations.
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 enhances the reliability and performance of the projection device by eliminating cable-related issues during assembly and maintenance, reducing production costs, and ensuring stable operation without the need for manual cable management.
Implementation Method 1
The operation circuit board includes a wireless signal emitter and a first conducting portion. The operation circuit board generates a first operation signal in response to the first operation, and the wireless signal emitter is configured to emit the first operation signal.
Implementation Method 2
The main board includes a wireless signal receiver and a second conducting portion. The wireless signal receiver is configured to receive the first operation signal, and the main board is configured to execute a first action corresponding to the first operation signal.
Implementation Method 3
The conducting element is electrically connected to the first conducting portion and the second conducting portion.
Data Source
AI summary
A projection device including a casing, an operation module, a main board, and a conducting element is provided. The operation module includes an operation element and an operation circuit board. The operation element is disposed on the casing to execute a first operation. The operation circuit board is coupled to the operation element. The operation circuit board includes a wireless signal emitter and a first conducting portion. The operation circuit board generates a first operation signal in response to the first operation, and the wireless signal emitter emits the first operation signal. The main board includes a wireless signal receiver and a second conducting portion. The wireless signal receiver is configured to receive the first operation signal, and the main board is configured to execute a first action corresponding to the first operation signal. The conducting element is electrically connected to the first conducting portion and the second conducting portion.