Motion Detection Control Device for Standby Power Reduction
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Solution Overview
Problem
Existing three-dimensional motion detection systems for controlling external electrical devices consume excessive power, especially in standby mode and during prolonged immobilization of vehicles, due to continuous operation requirements and high energy demands from complex systems.
Innovation Solution
A control device and method that utilizes a staggered system state approach, subdividing the monitoring area into pre-detection and detection zones, with minimal energy consumption in standby mode and reduced power input during operation, by performing incremental measurements to verify event relevance and activate only necessary system states for accurate position determination and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If continuous detection system operation is maintained to ensure immediate control readiness, then control response time is improved, but energy consumption increases
Solution Approach 1:
The patent implements dynamic operation modes that adapt the detection system's activity level based on current requirements. The system transitions between standby mode (low power) and active detection mode (high power) based on whether immediate detection is needed, thus dynamically optimizing the trade-off between response time and energy consumption
Solution Approach 2:
The patent employs periodic detection cycles where the system alternates between active scanning and standby states. During standby, the system consumes minimal power while maintaining the ability to quickly activate detection when needed, thereby reducing overall energy consumption while preserving acceptable response times
2Measurement precision
If complex three-dimensional motion detection systems are used to achieve accurate object recognition and position determination, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the detection space into multiple zones (detection area, monitoring area, exclusion area) and processes detection data from different photodiode groups corresponding to these zones. This segmentation allows the system to achieve accurate three-dimensional object recognition by analyzing spatial patterns across divided detection regions without requiring a single overly complex detection mechanism
Solution Approach 2:
The patent utilizes the temporal dimension by analyzing sequences of detection signals over time, in addition to spatial information from the photodiode array. This multi-dimensional approach (spatial + temporal) enables accurate motion detection and object tracking while using relatively simple individual components
3Reliability
If multiple photodiodes and evaluation circuits are activated continuously to maintain detection readiness, then detection reliability is improved, but power consumption increases
Solution Approach 1:
The patent dynamically activates only the necessary photodiodes and evaluation circuits based on the current operational mode. During standby, minimal components remain active while maintaining detection capability. When detection is required, the system activates the specific photodiode groups and evaluation circuits needed for the current detection task, thus maintaining reliability while reducing power consumption
4Reliability
If the detection system operates in standby mode during prolonged vehicle immobilization to maintain readiness, then control readiness is improved, but energy from storage is depleted
Solution Approach 1:
The patent implements periodic detection cycles during standby mode rather than continuous operation. The system performs detection at intervals sufficient to maintain readiness while allowing energy storage to replenish between cycles. This periodic operation during vehicle immobilization maintains control readiness while preventing complete depletion of storage energy
Solution Approach 2:
During standby mode, the system performs partial detection actions rather than full continuous operation. The detection system remains capable of immediate full operation when needed but operates at reduced capacity during standby, consuming only the minimal energy required to maintain readiness without depleting storage energy
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 significantly reduces energy consumption by minimizing power input during both standby and operational phases, ensuring immediate control readiness while maintaining efficient energy use, even in low-light conditions and over a wide range of wavelengths, through the use of pulse measuring methods and photo diodes for accurate motion detection.
Implementation Method 1
an arrangement of at least two rows of arranged photo diodes (8) as optical detectors to receive radiation which impinge on the diode arrangement as a consequence of reflecting at an object in the monitoring area
Implementation Method 2
for a carried out distance measurement, a pulse measuring method is used
Implementation Method 3
an arrangement of at least two rows of arranged photo diodes (8) as optical detectors to receive radiation
Data Source
AI summary
A method and device to control electrical devices using motion detection are presented, through which an object inside a monitoring area which is subdivided into a pre-detection area and a detection area is successively identified as well as verified in the detection area for reducing power input in standby mode and during operation in the main cycle using distance measurements and its position consequently determined. During the course of the distance measurements, the control device is brought into a readiness state and later on into operating state. After finishing the distance measurements and determining the position of the object in the detection area, an output signal which serves to control an external electrical device is generated by a control device.