Wireless Sensor Frequency Band Segmentation
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Solution Overview
Problem
In wireless sensor systems, data loss occurs due to radio-frequency interference between wireless terminal devices and relay devices, especially when a large number of devices are present, making reliable data transmission challenging without elaborate investigation.
Innovation Solution
The system employs wireless terminal devices transmitting data in a first frequency band through one-way communication, while relay devices transmit in a second frequency band that is partially or entirely different, preventing interference and allowing reliable data transmission even with numerous devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless terminal devices and relay devices operate in the same frequency band, then device complexity is reduced and ease of operation is improved, but radio-frequency interference occurs causing data loss
Solution Approach 1:
The frequency band is segmented into a first frequency band for wireless terminal devices and a second frequency band for relay devices. This segmentation prevents radio-frequency interference while maintaining operational simplicity, as each device type operates in its designated frequency range without requiring complex interference management protocols.
2Reliability
If frequency bands are separated for terminal devices and relay devices, then radio-frequency interference is suppressed improving reliability, but device complexity increases
Solution Approach 1:
The wireless sensor system employs a universal frequency allocation scheme where terminal devices and relay devices each have dedicated frequency bands. This multi-functionality approach allows the system to handle both sensor data transmission and relay communication simultaneously without interference, preventing the need for complex dynamic frequency management while ensuring reliable operation.
Data Source
AI summary
This wireless sensor system includes: one or a plurality of wireless terminal devices, each wireless terminal device being configured to transmit data including sensor information indicating a result of measurement by a sensor; a management device; and one or a plurality of relay devices, each relay device being configured to transmit the data received from the wireless terminal device, to the management device or another relay device. The wireless terminal device transmits, through one-way communication, a radio signal including the data and being in a first frequency band. The relay device transmits a radio signal including the data and being in a second frequency band partially or entirely different from the first frequency band.