Multi-Sensor Tamper Detection Using Machine Learning Models

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Solution Overview

Problem

Existing tamper detection systems face challenges in accurately identifying tamper events, especially in dynamic environments and low-light conditions, and require complex software algorithms to differentiate between genuine tamper events and false positives, leading to costly integration efforts across different market sectors.

Innovation Solution

An integrated circuit or module that monitors and logs events from multiple sensors, including light, acceleration, magnetic fields, rotation, temperature, pressure, humidity, and audio, using machine learning models to predict tampering by training on data from these sensors and providing an interface for further data analytics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple sensors are used to improve tamper detection accuracy, then measurement precision is improved, but device complexity increases

Engineering Contradiction:
Improvetamper detection accuracyVSAvoidsensor integration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple different sensors (accelerometer, optical sensor, temperature sensor, humidity sensor, pressure sensor, magnetic field sensor, audio sensor) into a single integrated module that monitors the same protected item. This merging approach allows the system to collect diverse sensor data for improved tamper detection accuracy while managing complexity through unified integration rather than separate systems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated sensor module serves multiple functions simultaneously - it monitors physical movement via accelerometer, detects light changes via optical sensor, measures environmental conditions via temperature/humidity/pressure sensors, and detects magnetic field changes. This multi-functionality allows a single device to perform comprehensive tamper detection across various conditions without requiring separate specialized systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If advanced software algorithms are used to filter false positives, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improvefalse positive filteringVSAvoidsoftware algorithm complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system implements feedback mechanisms where sensor data from multiple sources is continuously monitored and cross-referenced. When a potential tamper event is detected by one sensor, the system checks corresponding data from other sensors to confirm or refute the event. This feedback loop among multiple sensors enables effective false positive filtering through data correlation rather than complex standalone algorithms.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent uses a composite approach by combining data from multiple different sensor types (accelerometer, optical, temperature, humidity, pressure, magnetic field, audio) to create a comprehensive detection framework. This composite sensor data approach allows the system to distinguish genuine tamper events from false positives by looking for consistent patterns across multiple sensor modalities, reducing reliance on complex software algorithms.

Inventive Principle:
Principle #40Composite materials

3Measurement precision

If optical sensors are used for tamper detection, then measurement precision is improved in stationary settings, but adaptability decreases in low-light environments

Engineering Contradiction:
Improveoptical detection accuracyVSAvoidlow-light environment performance
Core Design Contradiction:
Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The system incorporates an optical sensor alongside multiple other sensor types including accelerometer, temperature sensor, humidity sensor, pressure sensor, magnetic field sensor, and audio sensor. This universal multi-functional approach ensures that while the optical sensor provides high precision in well-lit stationary settings, the other sensors can compensate and provide detection capability in low-light or varying environmental conditions, maintaining overall system adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11662698B2Methods and apparatuses for detecting tamper using machine learning models
Publication Date: 2023.05.30 CACI INC FEDERAL
  • US11662698B2 patent drawing
  • US11662698B2 patent drawing
  • US11662698B2 patent drawing

AI summary

The present application describes a machine learning method for detecting tamper. The method includes a step of training a model using one or more values obtained from one or more different sensors on an integrated module. The one or more values act as training data with respect to one or more of light, acceleration, magnetic field, rotation, temperature, pressure, humidity, and audio. The method also includes a step of predicting, via the trained model, tampering of the of the integrated module. The present application also describes a system for detecting tamper.