Bite Detector Signal Discrimination for False Alarm Reduction
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Solution Overview
Problem
Existing bite detectors lack flexibility in user control and are prone to false positive alarms, especially in adverse weather conditions, due to hard-coded noise protection and high power consumption from processor-based solutions.
Innovation Solution
A bite detector with a signal discrimination module that includes hardware and software components, allowing user-selectable time periods for alarm generation and distinguishing between continuous movement and vibration, reducing power consumption by activating the processor only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a processor-based solution is used to provide flexible user control, then adaptability is improved, but power consumption increases
Solution Approach 1:
The patent implements a two-stage discrimination system where the first stage operates continuously with fixed criteria and the second stage operates conditionally with user-selectable criteria. This dynamic activation approach allows the processor to remain dormant during normal operation and only activate when specific conditions are met, providing flexibility while minimizing power consumption.
Solution Approach 2:
The processor is activated periodically or event-driven rather than continuously. The system checks conditions at the first stage continuously, but only activates the processor for the second stage when the first stage criteria are satisfied, creating a periodic rather than continuous power consumption pattern.
2Reliability
If hard-coded noise protection is used, then reliability is improved, but adaptability deteriorates
Solution Approach 1:
The patent transitions from static, hard-coded noise protection to a dynamic two-stage system. The first stage provides reliable baseline protection with fixed criteria, while the second stage offers adaptable, user-selectable criteria that can be adjusted for different fishing conditions, weather, and preferences.
Solution Approach 2:
The noise protection system is segmented into two distinct stages: a first stage with fixed, reliable criteria for initial filtering, and a second stage with user-selectable criteria for adaptive fine-tuning. This segmentation allows each stage to specialize in its strength while working together.
3Measurement precision
If the processor is activated continuously, then discrimination accuracy is improved, but power consumption increases
Solution Approach 1:
Instead of continuous processor activation, the system applies partial action by activating the processor only when the first stage criteria are satisfied. This selective activation maintains discrimination accuracy when needed while significantly reducing overall power consumption during normal operation.
Solution Approach 2:
The first stage performs preliminary filtering of signals before they reach the processor. This preliminary action eliminates obvious false positives early in the signal chain, so the processor only needs to perform detailed discrimination on signals that have already passed the first stage test.
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
Provides more flexible user control and reduced false alarms by discriminating between different types of line movements, enhancing battery life and performance in varying conditions.
Implementation Method 1
GB 2 222 060 is an example of a bite detector which uses a piezoelectric element to detect movements in a fishing line
Data Source
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AI summary
A bite detector (1100) is disclosed for providing an alarm signal indicative of movement of the line of a fishing rod, the detector comprising a movement sensor (1102) for generating a movement signal indicative of movement detected by the sensor; an alarm module (1106) for processing the movement signal and generating the alarm signal if appropriate; and a signal discriminator module (1104) for activating the alarm module when the movement signal has met at least one criterion for a length of time, the length of time being selectable from a range of lengths of time during operation.