Sensor Amplifier Data Buffering for Wireless Measurement Reliability
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Solution Overview
Problem
Current measurement systems face issues with data loss during wireless communication, high power consumption, inefficient hardware resource utilization, and synchronization challenges across multiple measurement devices, leading to reliability and efficiency problems.
Innovation Solution
A measurement system with a sensor amplifier that converts analog signals to digital, stores data, and uses dual wireless communication units for efficient data transmission and retransmission, along with a main body unit for data processing and synchronization, allowing for flexible data handling and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If measurement data are transmitted wirelessly continuously, then remote measurement capability is achieved, but power consumption increases and battery life decreases
Solution Approach 1:
The sensor amplifier transmits measurement data at predetermined time intervals rather than continuously. The transmission unit sends data periodically to the external device, allowing remote measurement capability while significantly reducing power consumption compared to continuous transmission.
2Ease of operation
If measurement data are transmitted wirelessly, then remote data access is enabled, but data loss and communication disconnection occur
Solution Approach 1:
The sensor amplifier stores measurement data in its storage unit before transmission to the external device. This preliminary storage ensures that even if wireless transmission fails or data are lost during transfer, the original data remain preserved in the sensor amplifier and can be retransmitted or accessed later.
3Adaptability or versatility
If multiple measurement devices operate independently, then device autonomy is maintained, but time synchronization between devices fails
Solution Approach 1:
The external device receives measurement data from multiple sensor amplifiers and generates feedback information indicating whether the data are synchronized. This feedback is transmitted back to the sensor amplifiers, which use it to adjust their measurement timing and achieve synchronized operation while maintaining device autonomy.
4Device complexity
If all data processing is performed by the main body unit, then system simplicity is maintained, but hardware resource utilization becomes inefficient
Solution Approach 1:
The data processing function is segmented between the sensor amplifier and the external device. The sensor amplifier performs preliminary processing of measurement data locally, then transmits processed data to the external device for further analysis. This segmentation improves hardware resource utilization while maintaining overall system simplicity.
Data Source
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AI summary
If input signal is transmitted to a main body unit (10), a sensor amplifier (30) stores the input signal in itself as measurement data (S01), and transmits the input signal with the added transfer order information to the main body unit (10) (S02). By checking the transfer order information added to the input signal, the main body unit (10) can confirm if the input signal is deficient or not. Upon the end of the measurement of the physical quantity (S03), the main body unit (10) transmits the retransmission request that requests the retransmission of the deficient portion of the data to the sensor amplifier (30) (S04). According to the retransmission request from the main body unit (10), the sensor amplifier (30) extracts the deficient portion of the input signal data stored in itself (S05) and retransmits the extracted input signal data to the main body unit (10) (S06).