Wireless Wall Switch Control When the Live Wire Is Open
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Solution Overview
Problem
Existing wireless control switches cannot turn on a powered device when the general mechanical switch is in the open state, as they require a closed mechanical switch to function.
Innovation Solution
A wireless control module that includes a live wire connection/disconnection detection module and a flash switch, allowing the module to maintain functionality by detecting the state of the live wire and generating control instructions to toggle the powered device's state based on both manual switch press and wireless control messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a general mechanical switch is used in series with the wireless control switch, then the circuit can be controlled in a closed state, but the wireless control switch cannot turn on the powered device when the mechanical switch is in an open state
Solution Approach 1:
The patent introduces a live wire connection/disconnection detection module as an intermediary between the flash switch and the main control module. This detection module monitors the circuit state and provides feedback to the main control module, enabling it to distinguish between intentional off-state commands and circuit disconnection events. This intermediary mechanism resolves the contradiction by allowing the wireless control switch to maintain remote control functionality while properly responding to both closed and open circuit states.
2Ease of operation
If the wireless control switch is coupled in series with a general mechanical switch, then the switch can be remotely controlled, but the wireless control switch loses the ability to work when the mechanical switch is open
Solution Approach 1:
The patent implements a feedback mechanism where the live wire connection/disconnection detection module continuously monitors the circuit state and feeds this information back to the main control module. The main control module uses this feedback to determine whether to execute remote control commands or to indicate circuit failure. This feedback loop resolves the contradiction by enabling the wireless control switch to maintain reliable operation and remote control capability simultaneously, as the system can now distinguish between intentional off commands and circuit disconnections.
3Reliability
If a flash switch is used instead of a general mechanical switch, then the wireless control module can function continuously, but the circuit behavior changes from traditional switch operation
Solution Approach 1:
The patent inverts the traditional switch behavior by using a flash switch that is normally closed (conducting) and opens (disconnects) when pressed, rather than the traditional normally-open switch that closes when pressed. This inversion allows the wireless control module to maintain continuous power supply and operation, while the live wire detection module and main control logic are designed to interpret this inverted behavior correctly, maintaining compatibility with traditional switch usage patterns.
Data Source
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AI summary
The present disclosure is directed to a wireless control module (100), a wireless wall switch, a powered device (30) and a system, and pertains to the field of intelligent control. The wireless control module (100) includes a main control module (120), a live wire connection/disconnection detection module (140), a wireless communication module (160) and a control switch (180). The live wire connection/disconnection detection module (140) is configured to detect a connection/disconnection state of a live wire which is coupled to a flash switch (20) in series, and the flash switch (20) is a switch that is in a switch-off state when being pressed by external force and in a switch-on state when not being pressed by the external force. The wireless communication module (160) is configured to receive a wireless control message and upload a current state of a powered device (30), and the wireless control message is used for controlling an on/off state of the powered device (30). The main control module (120) is configured to generate a control instruction for changing the current state of the powered device (30) according to the current state of the powered device (30) and the connection/disconnection state of the live wire or a wireless control message transferred by the wireless communication module (160).