Sensor Device Prediction Ephemeris Updates via BLE
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Solution Overview
Problem
Existing information processing devices face challenges in reliably updating positioning satellite information due to communication disruptions or power issues between the communication device and the information processing device, leading to outdated satellite information.
Innovation Solution
A system where a sensor device acquires positioning satellite information via a user terminal, which communicates with a management server, using Bluetooth Low Energy (BLE) to ensure timely updates, even in cases of communication or power disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning satellite information is updated via communication device, then positioning accuracy is improved, but communication reliability deteriorates due to connection issues or power off
Solution Approach 1:
The system performs preliminary actions by acquiring positioning satellite information in advance when communication is available, storing it locally. This allows the information processing device to maintain accurate positioning data even when communication interruptions occur later, resolving the contradiction between needing accurate data and facing unreliable communication.
Solution Approach 2:
The communication device acts as an intermediary that bridges the management server and the information processing device. It downloads positioning satellite information from the server and transfers it to the information processing device, enabling indirect acquisition that overcomes direct communication reliability issues between the server and the positioning device.
2Loss of information
If communication is established frequently to update positioning satellite information, then information freshness is improved, but energy consumption increases
Solution Approach 1:
The system implements periodic action by establishing communication at specific intervals or under specific conditions (such as when the communication device is in range and powered on) rather than continuously. This allows the information processing device to receive updated positioning satellite information periodically, maintaining information freshness while significantly reducing energy consumption compared to continuous communication.
Data Source
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AI summary
Provided are an information processing device, an action analysis system, an action analysis method, and a program which can surely update positioning satellite information acquired by means of a communication apparatus. A sensor device 2 as the information processing device is provided with: a communication processing unit 101 which communicates with a user terminal 3 as a communication apparatus that downloads the positioning satellite information from a management server 1; a positioning processing unit 102 which acquires the current location by using the positioning satellite information; an action result processing unit 103 which acquires action information indicating a result of an action of a user; and a prediction ephemeris acquisition unit 104, as a positioning satellite information acquisition unit, which, when the action information is acquired by the action result processing unit 103, instructs the user terminal 3 to download the positioning satellite information from the management server 1 through communication by the communication processing unit 101, and executes a process for acquiring a prediction ephemeris from the user terminal 3.