Outdoor Sensor Nodes for Bandwidth-Efficient Data Processing
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Solution Overview
Problem
The challenge lies in efficiently processing and communicating large amounts of digital image data from cameras, which strains bandwidth and processing resources, particularly in environments like cities where data needs to be converted into meaningful information for residents and visitors.
Innovation Solution
A system comprising outdoor nodes with digital displays, processors, and multiple sensors that process data locally and upload processed information via the Internet, reducing bandwidth usage by transmitting counts of objects detected rather than raw video data, and can control displays and infrastructure like traffic lights based on sensor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If raw camera data is transmitted and processed remotely, then processing power can be centralized, but bandwidth consumption increases significantly
Solution Approach 1:
The system divides the data processing task into two segments: local processing at the node (where cameras capture and initially process image data to extract meaningful information) and remote processing at the server (where aggregated data is analyzed). This segmentation prevents raw camera data from being transmitted over the network, significantly reducing bandwidth consumption while still enabling centralized processing capabilities.
Solution Approach 2:
The system extracts only the essential information from raw camera data through local processing - such as object detection results, scene descriptions, and statistical summaries - and transmits only this extracted data to the server. This extraction approach eliminates the need to transmit voluminous raw video streams, dramatically reducing network bandwidth requirements while preserving meaningful information.
2Productivity
If multiple sensors and processing units are deployed at each location, then local processing capability improves, but device complexity increases
Solution Approach 1:
The outdoor node is designed as a multi-functional unit that integrates cameras, sensors, processing units, and communication modules into a single platform. This node can perform diverse functions including image capture, object detection, environmental monitoring, data aggregation, and wireless transmission. By making the node universal and multi-functional, the system avoids the complexity of deploying separate dedicated devices for each function while maintaining high local processing capability.
Solution Approach 2:
The system merges multiple functions - camera operations, sensor data collection, local processing, and data transmission - into a single integrated outdoor node. This consolidation reduces the overall system complexity by eliminating the need for separate processing units at each location while still enabling sophisticated local analysis of environmental data.
3Extent of automation
If all sensor data is transmitted to central server, then centralized analysis improves, but network bandwidth and processing resources are strained
Solution Approach 1:
The outdoor node performs preliminary processing and analysis of sensor data locally before transmission to the central server. This preliminary action includes filtering out redundant information, extracting key features, and pre-aggregating data from multiple sensors. By performing this analysis upstream at the node, the system reduces the volume of data that needs centralized processing, thereby reducing the processing resource burden on the server while still enabling comprehensive centralized analysis of aggregated data.
Data Source
AI summary
Methods of operating a system of nodes are provided. A method of operating first and second nodes that are in a system of nodes includes processing first data from a first plurality of sensors of the first node. The method includes controlling a first digital display of the first node in response to the processed first data. The method includes uploading the processed first data from the first node via the Internet. The method includes processing second data from a second plurality of sensors of the second node. The method includes controlling a second digital display of the second node in response to the processed second data. The method includes uploading the processed second data from the second node via the Internet. Each of the first and second nodes is attached to a utility pole, a light pole, a kiosk, or a motor vehicle. Related systems are also provided.