Master-Slave Three-Way Switch Control to Cut Smart Switch Cost
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Solution Overview
Problem
Conventional three-way switch systems require two identical intelligent switches, which is resource wasteful and costly, as they lack a master-slave configuration that could achieve the same functionality with a more sophisticated master switch and a less expensive slave switch.
Innovation Solution
The introduction of an intelligent three-way master switch and slave switch system, where the master switch includes advanced control devices and the slave switch has minimal components, utilizing a DC power supply, live wire relay, and switch control unit to manage electrical power through different cable configurations, allowing for wireless and sensor-controlled operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two identical intelligent three-way switches are used in a three-way switch system, then the system achieves full intelligent control functionality, but the manufacturing cost increases and resources are wasted
Solution Approach 1:
The patent applies asymmetry by designing two different types of switches: a master switch with full intelligent control capabilities (including wireless communication module, control unit, and relay) and a slave switch with minimal components (only switch input terminal and output terminal). This asymmetric design allows the system to achieve full intelligent functionality through the master switch alone, eliminating the need for an expensive second intelligent switch while maintaining complete control capability.
Solution Approach 2:
The slave switch acts as a simple copy or replica of the basic switch functionality without the intelligent components. It provides the necessary electrical connection and switching capability but relies on the master switch for all intelligent control operations. This copying approach allows the system to maintain the required three-way switching functionality while avoiding duplication of expensive intelligent components.
2Reliability
If two identical intelligent three-way switches are used in a three-way switch system, then the system achieves full intelligent control functionality, but resource utilization becomes inefficient
Solution Approach 1:
By creating an asymmetric master-slave configuration where the master switch contains all intelligent components and the slave switch contains only basic switching components, the system optimizes resource utilization. The expensive intelligent components (wireless communication module, control unit, relay) are concentrated in one unit rather than duplicated in two units, reducing overall resource consumption while maintaining full functionality.
Data Source
AI summary
Present invention relates to intelligent three-way switch system having intelligent three-way master switch, intelligent three-way slave switch, and load. In certain embodiments, intelligent three-way master switch includes a DC power supply, a live wire relay, and a switch control unit, and intelligent three-way slave switch includes a switch control unit. The DC power supply provides low voltage DC power to live wire relay and switch control units. When at least one of switch control unit of the intelligent three-way master switch and switch control unit of the intelligent three-way slave switch receives switch control instructions, the switch control unit generates a negative pulse at the switch control unit first terminal, and the negative pulse is transmitted to the live wire relay. The live wire relay detects the negative pulse generated at the switch control unit first terminal and turns “ON” or “OFF” the electrical power to the load.