Wireless Telemetry Using Pulse Interval Measurement
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Solution Overview
Problem
Current wireless telemetry systems face challenges in reliably transmitting commands and data between stationary and non-stationary elements, particularly in noisy environments and varying voltage conditions, leading to false triggers and reduced accuracy.
Innovation Solution
The system employs a wireless signaling method using a stationary element controller to transmit pairs of pulses with specific pulse widths and intervals, which are measured by the non-stationary element controller to interpret commands, incorporating voltage transitions and pulse intervals to ensure accurate data transmission and command execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wireless telemetry systems transmit commands and data between stationary and non-stationary elements, then communication is established, but the system suffers from false triggers and reduced accuracy in noisy environments and varying voltage conditions
Solution Approach 1:
The system uses periodic pulse transmissions with specific timing intervals to encode commands. The stationary element controller sends pairs of pulses with defined pulse widths and intervals, creating a periodic signal pattern that the non-stationary element controller can reliably detect and interpret, reducing false triggers in noisy environments
Solution Approach 2:
The system encodes different commands by varying pulse parameters such as pulse width and pulse interval. By changing these temporal parameters rather than relying on voltage level alone, the system achieves more reliable command transmission that is less susceptible to voltage variations and electrical noise
2Object-affected harmful factors
If the system uses traditional signal transmission methods, then data can be transmitted, but the system requires more components and has reduced noise resistance
Solution Approach 1:
The system replaces traditional complex hardware filtering and shielding mechanisms with a temporal encoding scheme. By using pulse width and interval modulation, the system achieves noise resistance through signal processing rather than physical barriers, reducing the number of passive components required
Solution Approach 2:
The pulse interval measurement method allows the non-stationary element controller to self-calibrate and identify valid commands through timing analysis. The system uses the inherent timing structure of the transmitted pulses to automatically distinguish valid commands from noise without requiring additional reference signals or complex synchronization mechanisms
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
This approach enhances resistance to noise and false triggers, allows for reduced component usage, and maintains reliable communication in varying voltage conditions, improving the accuracy and efficiency of command interpretation and data transmission.
Implementation Method 1
The rotor and stator each include an inductive antenna for bi-directional communication
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
According to techniques of this disclosure in various examples, a wireless signaling system may include a stationary element such as a stator and a non-stationary element such as a rotor. The stationary element includes a stationary element controller. The stationary element is configured to transmit a wireless signal comprising a pair of pulses. The non-stationary element comprising a non-stationary element controller. The non-stationary element is configured to receive the wireless signal from the stationary element controller, measure a transition in voltage of each of the pulses and a time interval between the pulses, and interpret a signal based on the transition in voltage of each of the pulses and the time interval between the pulses.