Capsule Endoscope Receiving Antenna Power Management
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Solution Overview
Problem
Conventional receiving apparatuses for capsule endoscopes face challenges in efficiently and power-effectively detecting and receiving transmission data, particularly when the apparatus is in an initial or defect condition, due to repeated antenna selection and preamble detection processes, which can lead to increased power consumption and potential data loss.
Innovation Solution
A receiving apparatus with multiple antennas, a switching unit, a preamble detector, and a control unit that selectively switches antenna connections and puts the preamble detector into a sleep condition based on detection results, predicting preamble periods to minimize power consumption and ensure data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiving apparatus repeatedly performs antenna selection and preamble detection in initial or defect conditions, then transmission data can be reliably received, but power consumption increases
Solution Approach 1:
The receiving apparatus performs antenna selection and preamble detection only at periodic intervals based on the transmission frame rate, rather than continuously. The control unit determines whether preamble detection is necessary by checking if the current time corresponds to expected transmission timing, thereby reducing power consumption while maintaining reliable data reception.
Solution Approach 2:
The system uses the known transmission frame rate and timing information from the capsule endoscope to self-determine when preamble detection should occur. The control unit autonomously judges whether to activate the preamble detector based on elapsed time since the last transmission frame, eliminating the need for continuous detection and reducing power consumption.
2Reliability
If the receiving apparatus continuously monitors for transmission data, then data loss is prevented, but power consumption increases
Solution Approach 1:
The receiving apparatus monitors for transmission data at periodic intervals corresponding to the transmission frame rate rather than continuously. The control unit calculates expected transmission timing based on the frame rate and only activates the preamble detector at those specific moments, preventing data loss while significantly reducing power consumption compared to continuous monitoring.
Solution Approach 2:
The control unit uses feedback from the known transmission frame rate and timing information to determine when to activate the preamble detector. By continuously tracking the elapsed time since the last transmission and comparing it against the expected frame interval, the system receives feedback that triggers detection only when transmission is expected, maintaining reliability while reducing power consumption.
3Reliability
If the receiving apparatus performs frequent antenna selection and preamble detection, then transmission data reception is ensured, but processing time increases
Solution Approach 1:
The receiving apparatus performs antenna selection and preamble detection at periodic intervals matching the transmission frame rate rather than frequently or continuously. By synchronizing detection operations with expected transmission timing, the system ensures reliable data reception while minimizing processing time waste through avoided redundant detection operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for reliable data reception while reducing power consumption by optimizing antenna selection and preamble detection, ensuring continuous data capture without failure, even in initial or defect conditions.
Implementation Method 1
a plurality of receiving antennas that receive transmission data wirelessly transmitted from the capsule endoscope
Data Source
AI summary
A receiving apparatus includes: a plurality of receiving antennas capable of receiving transmission data which is wirelessly transmitted frame by frame and includes a preamble at a head; a switching unit that selectively switches a connection to any one of the plurality of receiving antennas; a preamble detector that detects the preamble of the transmission data output via the receiving antenna which is connected by the switching unit; and a control unit that controls whether or not to cause the preamble detector to be in a sleep condition based on a detection result by the preamble detector.