Passive Ultrasonic Sensor Object Approach Detection
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Solution Overview
Problem
Existing technologies do not effectively sense the approach of objects outside a house and notify users in advance, despite advancements in robot systems that can recognize and respond to individuals and obstacles.
Innovation Solution
An information processing device equipped with a passive ultrasonic sensor, a notification section, and a control section that detects features indicating the approach of learned objects from sensor data and notifies the user accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If passive ultrasonic sensors are used to detect approaching objects, then early detection capability is improved, but false detection from ambient sounds may increase
Solution Approach 1:
The system performs preliminary learning to establish reference patterns of ultrasonic signals from various objects before actual detection begins. This pre-established knowledge base enables the system to compare incoming signals against known patterns, significantly reducing false detections while maintaining early detection capability
Solution Approach 2:
The system incorporates feedback mechanisms where detection results are continuously refined by comparing against learned patterns and adjusting detection parameters. This feedback loop allows the system to distinguish between genuine approaching objects and ambient sounds by learning from past detection experiences
2Measurement precision
If multiple sensor types are integrated to improve detection accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The ultrasonic sensor system is designed to perform multiple functions: detecting approaching objects, identifying object types through pattern recognition, and providing early warning notifications. By making the sensor system multi-functional, the patent avoids adding separate specialized sensors for each function, thereby maintaining simplicity while achieving high detection accuracy
Solution Approach 2:
The system replaces complex multi-sensor mechanical detection systems with an intelligent ultrasonic detection system that uses signal processing and pattern recognition algorithms. This substitution maintains or improves detection accuracy while significantly reducing hardware complexity
3Loss of time
If the system continuously monitors ultrasonic signals to ensure early detection, then detection timeliness is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system uses periodic sampling of ultrasonic signals at optimized intervals. This periodic operation maintains the ability to detect approaching objects early while significantly reducing energy consumption compared to continuous monitoring, as the sensor and processing units can enter low-power states between sampling intervals
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
Enables the early sensing of approaching objects and timely notification of users, enhancing user preparedness and security by utilizing passive ultrasonic sensors to detect and classify approaching individuals or objects.
Implementation Method 1
a passive ultrasonic sensor; when detecting a feature indicating approach of an object learned in advance from sensor data detected by the ultrasonic sensor
Data Source
AI summary
There is provided an information processing device including a passive ultrasonic sensor, a notification section that notifies a user, and a control section that, when detecting a feature indicating approach of an object learned in advance from sensor data detected by the ultrasonic sensor, controls the notification section to notify the user.