Access Point Device for Work Machine Wireless Data Management
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Solution Overview
Problem
Existing communication systems for work machines lack efficient methods to connect and transmit data between work machines and mobile terminals via wireless communication, leading to redundant data transmission and lack of real-time updates.
Innovation Solution
An access point device with a memory, controller, and communicator is used to store and transmit data from work machines to mobile terminals, employing communication identifiers to manage data requests and updates, preventing redundant data transmission and ensuring timely updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If continuous data transmission is performed between work machine and mobile terminal, then real-time data availability is improved, but data transmission redundancy increases
Solution Approach 1:
The access point performs periodic beacon transmissions at predetermined intervals to announce data availability. Instead of continuous data transmission, the system uses periodic beacons to signal when updated data is available, and mobile terminals periodically check for these beacons. This periodic action reduces transmission redundancy while maintaining real-time data availability through efficient periodic updates.
Solution Approach 2:
The system implements feedback mechanisms where mobile terminals receive beacon signals indicating data availability status. When data is updated in the access point memory, the beacon is modified to reflect this change, providing feedback to mobile terminals. Terminals then selectively request and receive only updated data portions, reducing redundant transmissions while ensuring data availability.
2Speed
If frequent beacon transmissions are performed, then data update notification speed is improved, but communication overhead increases
Solution Approach 1:
Beacon transmissions are performed at predetermined periodic intervals rather than continuously or on every data change. This periodic approach balances notification speed with overhead reduction, as beacons are transmitted frequently enough to maintain real-time awareness but spaced out to minimize communication overhead and energy consumption.
Solution Approach 2:
The beacon message content is dynamically changed based on data availability status. When updated data is available in the access point memory, the beacon includes indicators or modified content to notify mobile terminals. This parameter change approach allows efficient notification without requiring frequent full beacon transmissions, reducing overhead while maintaining notification speed.
3Loss of information
If all work machine data is transmitted to mobile terminal, then data completeness is improved, but transmission time increases
Solution Approach 1:
Instead of transmitting all work machine data continuously, the system extracts and transmits only the specific data portions that have been updated or changed. The access point stores complete data in its memory, but mobile terminals receive only the extracted updated portions through selective data transmission triggered by beacon notifications, reducing transmission time while maintaining data completeness.
Solution Approach 2:
The access point preliminarily stores complete work machine data in its memory before any transmission occurs. This preliminary storage allows the system to quickly respond to mobile terminal requests by transmitting only the necessary updated portions without needing to retrieve or process entire data sets, reducing transmission time while ensuring data completeness is maintained in the access point for future requests.
Data Source
AI summary
An access point device for a work machine is configured to connect a work machine and a mobile terminal via wireless communication. The access point includes a memory, a controller, and a communicator. The memory is to store data of the work machine. The controller is to set a request as a communication identifier to be received by a mobile terminal. The mobile terminal is configured to obtain the data stored in the memory in accordance with the request. The communicator is to transmit the communication identifier to the mobile terminal and to transmit the data stored in the memory to the mobile terminal.