Sensor System Using Non-Orthogonal Wavelets for Object Detection
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Solution Overview
Problem
Existing sensor systems struggle to accurately detect multiple objects within an optical transmission path without relying on time slots, which are complex and limited in resolution due to orthogonality constraints on wavelet signals.
Innovation Solution
A sensor system that uses non-orthogonal wavelet signals to correlate with individual objects, employing a processing unit to form a linear form of receiver output signals and wavelet signals, allowing for the separation and identification of objects without the need for time slots, thereby enhancing resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time slots are used to detect multiple objects, then object detection capability is improved, but device complexity increases
Solution Approach 1:
The patent changes the fundamental parameter of wavelet signal orthogonality from required to optional. By using non-orthogonal wavelet signals, the system eliminates the need for time-slot-based separation, thereby detecting multiple objects simultaneously without increasing device complexity. This parameter change transforms the detection approach from time-multiplexed to space-multiplexed.
2Ease of operation
If orthogonality constraints are applied to wavelet signals, then signal separation is improved, but measurement precision deteriorates
Solution Approach 1:
The patent inverts the conventional approach by deliberately using non-orthogonal wavelet signals instead of orthogonal ones. This inversion allows the system to achieve higher measurement precision for object detection while managing signal separation through alternative mathematical processing methods rather than relying on orthogonality constraints.
3Measurement precision
If time slots are used for object detection, then multiple object detection is improved, but loss of time increases
Solution Approach 1:
The patent implements continuous useful action by enabling simultaneous detection of multiple objects within the same time slot. Instead of sequentially processing objects in different time slots, the system continuously processes all objects in parallel using non-orthogonal wavelet signals, thereby eliminating time loss while maintaining multiple object detection capability.
Data Source
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AI summary
The invention relates to a sensor system based on a feedback control with feedback of a compensation feed signal for detecting the distance or a property of an object (O1, O2) in a transmission path (I) between a transmitter (H) and a receiver (D) comprising: a transmitter (H), a compensation transmitter (K) and a receiver (D); a signal generation unit with a wavelet generator (WG) that generates at least one pair of wavelets as a feed signal (S5) for the transmitter, with which the transmitter (H) is controlled, wherein the wavelets are selected such that pairs of a sine function and a cosine function orthogonal to it are obtained; a processing unit (LF) in which a receiver output signal of the receiver is further processed; a reference memory (MRef) for storing reference values; a second memory (ME2);and a back-transformation unit for generating a compensation feed signal and for supplying the compensation feed signal (S3) to the compensation transmitter (K) in a feedback control loop, wherein an estimator performs a quotient calculation to divide determined Fourier coefficients by associated reference Fourier coefficients and to form object reflection Fourier coefficients that allow a statement about the property or the distance to the object.;