Video Doorbell Power Sharing Circuit for Chime Noise Reduction
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Solution Overview
Problem
Existing doorbell systems, particularly those with modern Wi-Fi video doorbells and electronic chimes, face challenges in meeting the unique power requirements of these devices. The existing wiring and transformers often result in inadequate energy profiles, leading to inefficient power usage and unwanted noise from electronic chimes.
Innovation Solution
A power signaling framework is implemented using improved hardware circuitry in the video doorbell to concurrently power the doorbell and the chime with enhanced efficiency. This framework includes a batteryless power sharing sequence, where a switch and controller manage the timing to iteratively switch between power paths for the doorbell and the chime, ensuring efficient operation without relying on internal batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing wiring and transformer are used to power video doorbell and chime, then installation cost and time are reduced, but power efficiency deteriorates and unwanted noise is generated
Solution Approach 1:
The system implements periodic action by using iterative switching between power paths for the doorbell and chime. The controller switches the power distribution periodically, allocating power to the doorbell during certain intervals and to the chime during other intervals, enabling both devices to operate efficiently from the same transformer without continuous power loss.
2Device complexity
If existing transformer is used to power electronic chime, then installation complexity is reduced, but unwanted noise is generated
Solution Approach 1:
The periodic switching mechanism limits the duration and intensity of power delivery to the electronic chime, preventing continuous operation that generates unwanted noise. The chime receives power only during specific intervals when the switch routes power to it, reducing noise generation while maintaining installation simplicity.
3Loss of substance
If batteryless power sharing is implemented, then dependency on internal batteries is reduced, but power management complexity increases
Solution Approach 1:
The switch acts as an intermediary component that simplifies the power management complexity. It mechanically or electronically routes power between the doorbell and chime based on control signals from the controller, eliminating the need for complex power management circuitry while achieving batteryless operation through iterative power sharing.
4Loss of energy
If iterative switching between power paths is used, then power efficiency is improved, but device complexity increases
Solution Approach 1:
The switch serves as an intermediary that manages the iterative switching between power paths. This single switching component controls power distribution to both the doorbell and chime in alternating intervals, achieving improved power efficiency without requiring complex multi-component switching circuits.
Data Source
AI summary
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are disclosed for implementing a power sequencing technique implemented using circuitry for powering a chime that outputs audio in response to a trigger event. An integrated circuit of a video doorbell receives a first power signal from a source and generates a half-wave pulse for a power sharing sequence of the circuit, based on the first power signal. The generated half-wave pulse is interrupted and the circuit generates a second power signal that causes the chime to initiate outputting the audio. The second power signal corresponds to the first power signal and is generated in response to interrupting the half-wave pulse. The circuit resumes generating the half-wave pulse to power the chime using the power sharing sequence after causing the chime to initiate outputting the audio using the second power signal.