Doorbell Power Sharing Circuit for Security Devices
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Solution Overview
Problem
The existing doorbell systems require additional wiring for powering security devices, making installation inconvenient and complex, especially when integrating multiple electronic devices like interphones, monitors, and fire equipment.
Innovation Solution
An electronic system that includes AC/DC conversion circuits, switches, and a doorbell-driving device, which utilizes the power from the doorbell system to power other electronic devices by generating DC power from AC power and controlling the doorbell's operation, allowing for shared power distribution without additional wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If additional wires are installed to power security devices, then power supply capability is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The doorbell system is transformed into a multi-functional power supply device that can simultaneously power the doorbell and other security electronic devices through its existing AC power input, eliminating the need for separate wiring for each device
Solution Approach 2:
The patent combines multiple power supply functions into a single integrated system where the doorbell's power circuit is merged with security device power requirements, allowing both to share the same power source and wiring infrastructure
2Use of energy by stationary object
If additional wires are installed for security devices, then power supply to electronic devices is improved, but ease of operation deteriorates
Solution Approach 1:
The doorbell system serves itself and other security devices by utilizing its own built-in AC power input circuitry to generate and distribute power, making the system self-sufficient and eliminating the need for additional external wiring infrastructure
3Use of energy by stationary object
If the AC switch is normally on to power electronic devices, then power availability is improved, but doorbell operation control deteriorates
Solution Approach 1:
The patent implements dynamic switching control where the AC switch state changes based on operational requirements - normally off to maintain doorbell control, and temporarily activated only when power is needed for electronic devices, optimizing both control and power availability
Solution Approach 2:
The system uses periodic or intermittent activation of the AC switch rather than continuous operation, allowing the doorbell to maintain full control while receiving periodic power bursts for electronic device operation
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 convenient and simple installation of electronic devices by utilizing the doorbell's power without affecting its operation, eliminating the need for extra wiring and simplifying the integration of multiple security and monitoring systems.
Implementation Method 1
The first AC/DC conversion circuit receives an AC power via the two power contacts and generates a DC power according to the AC power
Data Source
AI summary
An electronic system sharing power with doorbell includes two power contacts, an AC switch, a first AC/DC conversion circuit, a DC switch, an electronic device, and a doorbell-driving device. The first AC/DC conversion circuit receives an AC power via the power contacts and generates a DC power according to the AC power. In a normal state, the AC switch is off and the DC switch is on. Therefore, the electronic device is powered by the DC power. When the electronic device receives an enabling signal, the electronic device controls the AC switch to be on, to cause the voltage of the doorbell contacts to change from a low voltage to a high voltage. The doorbell-driving device detects the voltage of the doorbell contacts and supplies the power to a doorbell according to the detected voltage.