Relay Station Selection for Radiation Detector Wireless Communication
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Solution Overview
Problem
The existing radiation imaging systems face challenges with wireless communication performance due to metal housing in detector holders, which obstructs the wireless communication between the electronic cassette and the control unit, and lack the ability to select the best relay station for optimal communication.
Innovation Solution
A radiation imaging system that includes a detection unit to determine the usage pattern of the electronic cassette and its mounting on a detector holder, and a selection unit to choose the most suitable relay station based on this information, ensuring stable wireless communication by automatically switching between multiple relay stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal housing is used in the detector holder to protect the electronic cassette, then the structural strength and protection are improved, but the wireless communication performance deteriorates due to signal obstruction
Solution Approach 1:
A relay station is introduced as an intermediary device between the electronic cassette and the external wireless communication unit. The relay station receives wireless signals from the electronic cassette through the metal housing and retransmits them to the external unit, effectively bypassing the signal obstruction caused by the metal housing and restoring reliable wireless communication
Solution Approach 2:
The wireless communication function is segmented into two parts: the electronic cassette with built-in wireless antenna that communicates with the relay station, and the external wireless communication unit that communicates with the control unit. This segmentation allows the metal housing to remain intact for structural protection while the relay station acts as a signal bridge to maintain communication functionality
2Reliability
If multiple relay stations are provided to improve communication coverage, then the communication reliability is improved, but the device complexity increases due to the need for selection mechanisms
Solution Approach 1:
The control unit monitors the communication status between the electronic cassette and each relay station, and based on this feedback information about signal quality and connection status, automatically selects the most appropriate relay station for maintaining optimal wireless communication
Solution Approach 2:
The relay station selection is made dynamic rather than static. The system can switch between different relay stations based on real-time communication conditions, allowing the electronic cassette to connect to the best available relay station and thereby improving overall communication reliability without requiring manual intervention
3Ease of operation
If wireless communication is implemented to improve operability when moving the portable imaging unit, then the ease of operation is improved, but the communication performance deteriorates due to metal housing obstruction
Solution Approach 1:
The relay station serves as a mediator that enables wireless communication to function effectively despite the metal housing obstruction. By positioning the relay station outside the metal housing and using it as an intermediate transmission point, the system maintains both the ease of operation provided by wireless communication and the communication performance required for reliable data transfer
Data Source
AI summary
This invention includes a radiation detector to detect the radiation transmitted through an object while being in a portable state or mounted on a detector holder, a control unit to control capturing of a radiographic image using the radiation detector, and a plurality of relay stations to relay wireless communication from the radiation detector. The detector holder includes a detection unit to detect the mounting of the radiation detector. The control unit determines the usage pattern of the radiation detector or the mounting of the radiation detector on a detector holder based on detection information from the detection unit or a connection request from the radiation detector, and selects one of the relay stations based on the determination result.