Rotational Sensor Output Resolution Adaptation for Bandwidth Limits
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Solution Overview
Problem
Existing sensor technologies struggle to adaptively vary the resolution of information output based on the frequency of rotation of a target, leading to inefficiencies in bandwidth utilization and information accuracy.
Innovation Solution
A method and system that dynamically adjusts the frequency band and commutation sequence based on the rotation frequency of a magnetic target, using magnetic field sensing elements and digital controllers to transmit pulses in an AK protocol format, allowing for varying resolution and additional information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor device transmits high resolution information about the target, then the measurement precision is improved, but the bandwidth utilization deteriorates when the target rotates quickly
Solution Approach 1:
The sensor device dynamically adjusts the resolution of information transmitted based on the rotation frequency of the target. When the target rotates quickly, the device reduces resolution to maintain bandwidth utilization, and when the target rotates slowly, it increases resolution to provide more detailed information, making the system adaptive to varying operational conditions
Solution Approach 2:
The system changes the resolution parameter of the transmitted information based on the detected rotation frequency. By monitoring the frequency of the target's rotation and adjusting the information resolution accordingly, the system optimizes the balance between measurement precision and bandwidth utilization across different operating scenarios
2Measurement precision
If the sensor device provides high resolution information about the target, then the measurement precision is improved, but the loss of time increases due to transmission constraints
Solution Approach 1:
The sensor device adaptively adjusts information resolution based on rotation frequency to minimize transmission time. When the target rotates quickly, lower resolution reduces the amount of data to transmit, thereby reducing transmission time. When the target rotates slowly, higher resolution can be used without significantly increasing transmission time, thus optimizing the balance between precision and time efficiency
3Device complexity
If the sensor device uses a fixed commutation sequence, then the device complexity is reduced, but the adaptability deteriorates when target rotation frequency varies
Solution Approach 1:
The sensor device employs a single commutation sequence structure that serves multiple functions by dynamically selecting different commutation events based on rotation frequency. This universal structure can adapt to various rotation speeds without requiring multiple dedicated sequences, thereby maintaining low device complexity while achieving high adaptability to varying operational conditions
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
Enhances information resolution when bandwidth allows, providing greater accuracy in speed and direction information by adapting to target rotation frequencies, thereby optimizing sensor performance.
Implementation Method 1
Some sensors monitor properties by detecting a magnetic field associated with proximity or movement of a target with respect to one or more magnetic field sensing elements
Data Source
AI summary
Disclosed are example systems, methods, and techniques for adaptively varying a resolution of information output from a sensor device. In particular, described are example systems, methods, and techniques for adaptively varying a resolution of information output from a sensor device based on a frequency of rotation of a target. Also described herein are example systems, methods, and techniques for conveying which of a series of events caused information to be output from a sensor device.