Variable Control Switch for Managing Current Spikes

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Solution Overview

Problem

Existing power controller circuits in woodshops and machine shops are imprecise and lack fine control, often causing circuit breakers to trip when multiple devices with current spikes are activated simultaneously, leading to power disruptions.

Innovation Solution

A variable control switch with a sensing circuit and microcontroller unit that monitors and adjusts current flow between primary and secondary devices based on pre-determined variables, including termination threshold, to prevent circuit breaker tripping by managing current spikes and delays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power controller circuits are used to regulate current to multiple devices, then circuit breaker tripping is prevented, but control precision and flexibility are insufficient

Engineering Contradiction:
Improveprevention of circuit breaker trippingVSAvoidcontrol precision
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent replaces simple mechanical power controller circuits with a microcontroller-based electronic control system. The microcontroller unit (MCU) processes sensor signals and implements sophisticated control algorithms to precisely regulate current to multiple devices, achieving both high reliability in preventing breaker tripping and fine control precision through electronic modulation rather than mechanical switching.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention dynamically adjusts control parameters such as power levels, timing sequences, and current thresholds based on real-time sensor feedback. The system monitors variables like temperature, current draw, and device state, then modifies operating parameters to optimize control precision while maintaining reliability across varying load conditions and device configurations.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If multiple devices are activated simultaneously on the same circuit, then device availability is improved, but current spikes cause circuit breaker tripping

Engineering Contradiction:
Improvedevice availabilityVSAvoidcurrent spikes
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The system performs preliminary assessment of circuit load capacity before allowing device activation. The microcontroller calculates available headroom based on historical current data and breaker ratings, then proactively manages device startup sequences to prevent cumulative current spikes. Devices are activated in controlled sequences with timing delays that allow current to stabilize, ensuring total load remains within safe thresholds.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention implements continuous feedback monitoring of circuit current through sensors connected to the MCU. Real-time current measurements feed back to the control algorithm, which dynamically adjusts device operation to maintain total load below breaker tripping thresholds. The system can detect current spike trends and preemptively modulate power to active devices or delay secondary activations to prevent harmful current surges.

Inventive Principle:
Principle #23Feedback

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 solution provides precise control over device activation and deactivation, preventing circuit breaker tripping and ensuring continuous operation of devices by managing current spikes and optimizing power distribution.

Implementation Method 1

The control switch has a sensing circuit connected between the input plug and two output plugs and has an output comprising DC voltage varying proportionally to the current passing between said first and second output plugs

Methodology Applied
Scientific EffectElectrical signal conversion: Ohm's Law

Data Source

PatentUS12080497B2Variable control switch
Publication Date: 2024.09.03 KRAMER ERIC W
  • US12080497B2 patent drawing
  • US12080497B2 patent drawing
  • US12080497B2 patent drawing

AI summary

The present invention is a variable control switch. In particular, it is a control switch with modifiable variables for activation and deactivation of primary and secondary devices. The control switch has an input plug and two output plugs. The control switch has a sensing circuit connected between the input plug and two output plugs and has an output comprising DC voltage varying proportionally to the current passing between said first and second output plugs. The sensing circuit is connected to a microcontroller unit that controls current to the first or second outputs based on a set of pre-determined variables, including a termination threshold.