Segmented Sensor Array for Gap-Free Observation Zone Detection
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Solution Overview
Problem
Existing sensor systems for detecting objects in observation zones often have gaps in coverage and lack precision in monitoring longer edges, such as those found in hazardous regions or vehicle areas, leading to incomplete detection and potential safety issues.
Innovation Solution
A sensor system with a support extending along the observation zone, featuring a row of detection subassemblies that capture events within defined subzones, allowing for precise monitoring by overlapping subzones and using RC and/or LC networks with electrodes to detect changes in electric field properties, enabling the generation of informative measuring signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single detection assembly is used to monitor a long observation zone, then the device complexity is low, but the measurement precision and coverage completeness deteriorate due to gaps in detection
Solution Approach 1:
The observation zone is divided into multiple subzones, each monitored by a separate detection subassembly. This segmentation allows precise local detection in each subzone while maintaining overall zone coverage, resolving the contradiction between detection precision and avoiding gaps without requiring a single complex assembly
2Reliability
If multiple detection subassemblies are used to eliminate gaps in coverage, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The system is segmented into multiple independent detection subassemblies that can be arranged in a row along the observation zone. Each subassembly covers a specific subzone with overlapping boundaries, ensuring complete coverage without gaps while keeping individual components relatively simple
Solution Approach 2:
Multiple detection subassemblies are combined into a coordinated system where each subassembly operates semi-independently but contributes to the overall monitoring function. The merging of multiple simple units achieves the reliability of complete coverage without the complexity of a single integrated system
3Reliability
If all detection subassemblies are activated simultaneously, then the coverage is comprehensive, but the energy consumption increases
Solution Approach 1:
Instead of continuous simultaneous activation, the detection subassemblies are activated periodically in a sequential or time-multiplexed manner. This periodic action maintains monitoring reliability through complete coverage over time while significantly reducing instantaneous and average energy consumption
Solution Approach 2:
The system dynamically activates detection subassemblies based on operational needs, transitioning from static simultaneous activation to dynamic selective activation. This allows the system to maintain reliability when needed while reducing energy consumption during normal operation
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 system provides comprehensive and precise monitoring of observation zones by eliminating gaps and allowing for controlled activation of subzones, effectively detecting objects and their movements with high resolution, suitable for automotive and security applications.
Implementation Method 1
changes of the field-electric properties within the respective observation subzone influence the capacitance of a capacitor system that is at least partially formed by the electrode
Implementation Method 2
the respective electrode thereof serves ultimately the purpose of capturing changes of an electric field within the respective observation subzone
Data Source
AI summary
A sensor system has a support that extends along an observation zone, a row of detection subassemblies arranged one after another on the support and having subcircuits for capturing detection events within respective observation subzones defined by the respective detection subassemblies, and a base circuit on the support. The detection subassemblies are controlled with an alternating voltage having a frequency that forms a carrier frequency based on which a signal dialog occurs between the subcircuits and the base circuit.