Item Scanner TOF Sensor Distance Control
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Solution Overview
Problem
Checkout terminals, especially those controlled by a single computer, face challenges in efficient resource utilization and security due to constrained computing power, leading to reduced accuracy and increased costs in both cashier-assisted and self-service environments.
Innovation Solution
Incorporating a Time-of-Flight (TOF) sensor within item scanners to measure distances and control camera focus, lighting, and security tag deactivation, allowing for dynamic switching between dormant and active modes, improving resource allocation and security features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If computing resources are centralized in a single computer controlling multiple terminals, then deployment and maintenance costs are reduced, but resource utilization efficiency and response time deteriorate due to competing utilization needs
Solution Approach 1:
The system dynamically transitions terminals between dormant and active modes based on detected motion or presence. When no item is present, the terminal enters dormant mode with reduced resource consumption. When motion is detected, the terminal activates and allocates computing resources accordingly, enabling efficient resource utilization while maintaining cost-effective centralized architecture
Solution Approach 2:
The system performs preliminary actions by detecting motion or presence before a scanning transaction begins. This allows the centralized computer to pre-allocate computing resources and transition terminals to active mode in advance, reducing latency and improving response time while maintaining efficient resource management
2Ease of manufacture
If computing power in scanners is minimized to reduce costs, then deployment costs are reduced, but accuracy and security performance deteriorate
Solution Approach 1:
A TOF sensor acts as an intermediary device that enables accurate distance measurement and motion detection without requiring significant computing power in the scanner. The sensor provides precise spatial information to the centralized computer, which then performs the computationally intensive processing, maintaining accuracy while keeping scanner hardware simple and cost-effective
3Ease of manufacture
If a single computer controls multiple terminals, then maintenance cost is reduced, but response time and security monitoring accuracy deteriorate due to competing resource needs
Solution Approach 1:
The system dynamically adjusts resource allocation across multiple terminals based on real-time motion detection and operational state. When multiple terminals are in dormant mode, computing resources are freed for other tasks. When terminals become active, resources are dynamically allocated to meet response time requirements, maintaining cost-effective centralized control while improving responsiveness
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
This solution enhances terminal efficiency by optimizing resource usage, reducing power consumption, and improving security through accurate distance measurement and motion detection, enabling faster response times and enhanced image capture.
Implementation Method 1
a co-located time-of-flight (TOF) sensor that operates to measure a distance between the sensor and a subject captured in an image by the at least one camera
Data Source
AI summary
Various embodiments herein each include at least one of systems, devices, software, and method for item scanner distance-enabled functioning. One such embodiment is in the form of a method and includes receiving a distance measurement from a first TOF sensor co-located with a first camera of an item scanner of a terminal and determining further data processing activity to perform or initiate based on a current state of the terminal and the received distance measurement. This method embodiment may then perform or initiate the determined further data processing activity.