Power-Saving Circuit Infrared Detection Switching
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Solution Overview
Problem
Conventional power-saving circuits with mechanical relays fail to maintain effective power saving over time due to poor contact, leading to inefficiencies in electrical power management.
Innovation Solution
A power-saving circuit that utilizes a sensor module and switch module to detect infrared rays and control the output of stable DC voltage, eliminating the need for mechanical switches by using a self-oscillating circuit and sampling circuit to manage power distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical relay is used for switching in the power-saving circuit, then the circuit can control power distribution, but the contact reliability deteriorates after working a period of time
Solution Approach 1:
The patent replaces the mechanical relay with an electronic switching circuit comprising a comparator, transistor, and MOSFET. The comparator detects the voltage signal from the infrared sensor and controls the transistor and MOSFET to switch the power supply to the load, eliminating mechanical moving parts and contact wear, thus improving reliability and service life while maintaining the power-saving function.
2Reliability
If an infrared sensor with processing circuit is used to detect objects, then power-saving function is achieved, but the device complexity increases
Solution Approach 1:
The patent combines the infrared sensor, comparator, transistor, MOSFET, and power supply control into an integrated circuit module. By merging these components into a single compact unit with unified control logic, the patent reduces overall device complexity while maintaining the complete power-saving detection and control function.
3Loss of energy
If a mechanical relay is used for switching, then the power-saving circuit can be implemented, but the power management efficiency deteriorates due to poor contact
Solution Approach 1:
The patent replaces the mechanical relay with an electronic switching circuit using transistor and MOSFET components. This substitution eliminates contact resistance and poor contact issues inherent in mechanical relays, ensuring efficient power management with minimal energy loss during switching operations, while maintaining the power-saving control function.
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
The circuit achieves reliable power saving by selectively providing stable DC voltage based on infrared detection, extending the life of electronic devices and improving power management without mechanical switch limitations.
Implementation Method 1
The detector is used for detecting infrared rays emitted from an object or objects, and outputting a voltage signal indicating whether the infrared rays are detected or not
Data Source
AI summary
A power-saving circuit is provided for saving electrical power by detecting a presence or absence of an object in a localized area. The power-saving circuit includes a sensor module, and a switch module connected to the sensor module. The detector is adapted for outputting a control signal at a first state when an object is detected in the localized area, and outputting a control signal at a second state when an object is detected not in the localized area. The switch module provides a stable DC voltage according to the control signal at the first state, and not provides the stable DC voltage according to the control signal at the second state.