Bearing Wireless Sensor Dynamic Transmission Interval
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Solution Overview
Problem
Current bearing wireless sensors transmit detection information at fixed intervals, leading to increased processing load and delayed detection of abnormalities, as setting low thresholds or short intervals is necessary for early abnormality detection.
Innovation Solution
A bearing with a wireless sensor that includes a detection sensor, a transmission processing unit, and a signal processing unit, which adjusts the transmission interval based on the magnitude of detected information, transmitting more frequently as values approach abnormal levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the threshold value is set low or transmission interval is shortened to detect abnormalities earlier, then abnormality detection capability is improved, but processing load increases
Solution Approach 1:
The transmission interval is made dynamic rather than fixed. The signal processing unit adjusts the transmission interval based on the magnitude of detection information - using longer intervals when values are normal and shorter intervals when values approach abnormal levels, thereby adapting the system to current conditions and reducing unnecessary processing
Solution Approach 2:
The transmission interval parameter is changed based on the detection information magnitude. When detection values are close to abnormal levels, the transmission interval is shortened; when values are normal, the interval is lengthened. This parameter adaptation resolves the contradiction by making the system responsive without constant high-rate transmission
2Reliability
If the transmission interval is shortened to detect abnormalities earlier, then abnormality detection capability is improved, but power consumption increases
Solution Approach 1:
The transmission interval is dynamically adjusted based on the magnitude of detection information. During normal operation, longer intervals reduce power consumption. When abnormalities approach threshold levels, intervals are automatically shortened to improve detection, thus resolving the energy-time tradeoff
Solution Approach 2:
Instead of continuous or fixed-period transmission, the system uses variable-period transmission where the interval between transmissions changes based on system state. This periodic action with variable intervals reduces overall power consumption while maintaining abnormality detection capability
Data Source
Figure 1A~1B
Figure 2
Figure 3~4
AI summary
To enable a receiving-side device of detection information to detect an abnormality of the detection information more quickly. For the purpose, a physical quantity regarding a bearing body (5) is detected by a detection sensor (14) provided in the bearing body (5), and detection information of the detection sensor (14) is transmitted by a wireless transmitting unit (15) provided in the bearing body (5) via wireless communication. At this time, the detection information is transmitted at a first transmission interval when the detection information is smaller than a threshold value and is a normal value, and the detection information is transmitted at a second transmission interval that is shorter than the first transmission interval when the detection information is the threshold value or larger and is an abnormal value. The receiving-side device of the detection information receives the detection information at a shorter period when the detection information is an abnormal value than when the detection information is a normal value, and thus, can grasp the changing situation of the detection information in more detail, and can detect and address an abnormality of the detection information at an earlier stage.