Home Automation Control Point Voltage Detection
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Solution Overview
Problem
Existing control methods for mobile home automation equipment are prone to unintended reset due to humidity-induced parasitic impedance, leading to loss of recorded operating values and potential equipment damage.
Innovation Solution
A control method that includes a test procedure to determine if voltage presence on both phase terminals is due to a malfunction, specifically a parasitic impedance, by comparing voltages and measuring electrical quantities during a controlled power supply, thereby distinguishing between a legitimate command and a humidity-related issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a control point establishes contact between phase conductor and phase terminals using highly impedance detection circuits, then voltage detection sensitivity is improved, but false detection due to parasitic impedance from humidity increases
Solution Approach 1:
The patent applies preliminary action by performing a test procedure before executing the main control function. The method detects voltage presence on phase terminals, and when voltage is detected on both terminals, it first executes a test procedure to verify whether this indicates a legitimate command or a malfunction due to parasitic impedance, before proceeding with any control action or programming mode activation.
Solution Approach 2:
The patent introduces an intermediary verification step (test procedure) between voltage detection and control action execution. This intermediary procedure measures electrical quantities during controlled power supply to distinguish between legitimate dual-voltage commands and false indications caused by humidity-induced parasitic impedance, thereby preventing false detection.
2Ease of operation
If simultaneous voltage presence on both phase terminals triggers programming mode, then programming activation is simplified, but unintended reset due to humidity-induced parasitic impedance increases
Solution Approach 1:
The patent applies preliminary action by performing a test procedure before executing the main control function. The method detects voltage presence on phase terminals, and when voltage is detected on both terminals, it first executes a test procedure to verify whether this indicates a legitimate command or a malfunction due to parasitic impedance, before proceeding with any control action or programming mode activation.
Solution Approach 2:
The patent introduces an intermediary verification step (test procedure) between voltage detection and control action execution. This intermediary procedure measures electrical quantities during controlled power supply to distinguish between legitimate dual-voltage commands and false indications caused by humidity-induced parasitic impedance, thereby preventing false detection.
3Device complexity
If control method uses simple voltage detection without test procedure, then device complexity is reduced, but inability to detect parasitic impedance malfunctions increases
Solution Approach 1:
The patent applies preliminary action by performing a test procedure before executing the main control function. The method detects voltage presence on phase terminals, and when voltage is detected on both terminals, it first executes a test procedure to verify whether this indicates a legitimate command or a malfunction due to parasitic impedance, before proceeding with any control action or programming mode activation.
Solution Approach 2:
The patent introduces an intermediary verification step (test procedure) between voltage detection and control action execution. This intermediary procedure measures electrical quantities during controlled power supply to distinguish between legitimate dual-voltage commands and false indications caused by humidity-induced parasitic impedance, thereby preventing false detection.
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
Prevents unintended resets and loss of operating values by accurately differentiating between legitimate commands and humidity-induced malfunctions, ensuring reliable operation and data preservation.
Implementation Method 1
an electronic detection device is located in the actuator to detect the possible presence of voltage on one or other of the phase conductors of the actuator using highly impedant circuits
Implementation Method 2
the method executes a test procedure to determine whether this presence is due to a malfunction, by particular, due to the existence of a parasitic impedance between the phase terminals
Data Source
Figure 1
Figure 2
AI summary
The method involves executing a test procedure for determining whether the presence of a voltage on phase terminals (P1, P2) is due to a dysfunction of a control point (CSW), in case of detection of the voltage on the terminals. The test procedure is performed by supplying an induction motor (MOT) by one of the phase terminals having the lowest voltage and measuring an electric amplitude at the level of the phase terminal, during the supplying operation. The dysfunction of the control point is concluded or not based on the evolution of the electrical amplitude during its measurement stage. An independent claim is also included for an actuator with motor and phase terminals connected to a phase conductor of an electric supply source by using a control point.