Sensor Network System for Wireless Location Registration
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Solution Overview
Problem
Conventional methods for managing locations of IC chips with built-in sensors are cumbersome, especially when the number of sensors is large, and incorporating positioning functions increases sensor size and complexity, while low positioning accuracy can lead to errors in sensor chip location registration.
Innovation Solution
A sensor network system that includes a sensor chip for wireless communication, a database for storing measurement values, a management unit for accessing and associating sensor information with map data, and a device for registering sensor locations, utilizing an ID reading unit, position measurement, and wireless communication to simplify the mapping process without altering the sensor chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a positioning function such as GPS is incorporated in each sensor chip to automatically register location, then the location registration becomes automatic, but the sensor chip becomes larger in size and more complicated in configuration
Solution Approach 1:
The patent introduces a mobile terminal as an intermediary device that performs the positioning function separately from the sensor chip. The mobile terminal acquires location information and transmits it to the server, which then associates it with sensor data. This mediator approach allows automatic location registration without incorporating GPS into the sensor chip itself, thus avoiding increased chip complexity while achieving the same functional goal.
2Ease of operation
If the position of a sensor chip is measured using a mobile terminal with a positioning function, then location can be obtained, but positioning accuracy is not high enough leading to considerable errors in sensor chip position
Solution Approach 1:
The patent replaces the mobile terminal's GPS-based positioning system with a map-based location identification system. Instead of relying on satellite positioning accuracy, the system uses the mobile terminal to capture images of map information at the installation site, extracts location features from the map image, and identifies the precise location through pattern recognition. This substitution of positioning methodology eliminates GPS accuracy limitations while maintaining ease of operation.
3Loss of information
If sensor installation personnel manually note down locations and register information in GIS to grasp where sensors are installed, then location information can be recorded, but the work becomes quite troublesome when the number of sensor chips is very large
Solution Approach 1:
The patent implements an automated system where the sensor chip itself transmits its identification information and measurement data to the server, which automatically associates this data with location information obtained from map image recognition. This self-service approach eliminates the need for manual data entry and processing by installation personnel, allowing the system to handle large numbers of sensors efficiently without increasing registration time or complexity.
Data Source
AI summary
An object of the invention is to save the trouble of mapping sensor chips on a map information system. A map information management unit 124 is accessed via a network 122. Neighborhood information based on a present position measured by an own position measuring unit 102 is obtained by searching a map DB 127. A sensor information setting unit 106 displays the neighborhood information in a display unit 108. An ID reading unit 104 reads an ID 111 of a sensor chip 110, and registers the ID 111 in the map DB 127 after associating it with equipment information displayed in the display unit 108. The measurement values measured by a sensor 112 are transmitted from an antenna 114 and received by a sensor information receiving unit 119 of the receiver 118. A sensor information communication unit 120 accesses the network 122 and the measurements are transmitted to a sensor information management unit 123. The measurement values are accumulated in a sensor DB 126. The sensor DB 126 is searched using a sensor ID associated in the map DB 127 and the measurements are viewed as map information associated with equipment.