Acceleration Sensor Peak Tracking for Low-Bandwidth Data Output
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Solution Overview
Problem
Existing systems face challenges in efficiently detecting and transmitting peak acceleration data, particularly in high bandwidth and high output data rate scenarios, leading to increased computational load on the system controller.
Innovation Solution
An acceleration sensor circuit with a peak tracking system that includes an accelerometer, sample registers, an acceleration calculation digital circuit, a peak register, and a memory, which identifies and stores peak acceleration values during a tracking window, minimizing data transmission and reducing computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all acceleration data is transmitted to the system controller for peak detection, then measurement precision is improved, but device complexity and computational load increase
Solution Approach 1:
The patent extracts the peak detection function from the system controller and implements it within the acceleration sensor circuit itself. The circuit includes a peak detector that identifies peak acceleration values locally, and a data transmitter that selectively transmits only peak data to the system controller. This extraction reduces the computational burden on the system controller while maintaining detection accuracy.
Solution Approach 2:
The patent introduces an intermediary processing stage within the acceleration sensor circuit that includes a peak detector and data transmitter. This intermediary component processes the raw acceleration data locally, identifying peaks and filtering out non-peak data before transmission to the system controller. This intermediary layer reduces the volume of data transmitted and processed by the system controller.
2Productivity
If peak tracking is implemented within the acceleration sensor circuit, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent merges the peak detection functionality with the existing acceleration sensor circuit. The peak detector, sample register, and data transmitter are integrated into the sensor circuit package, allowing peak tracking to be performed alongside normal acceleration sensing. This merging enables efficient data processing without requiring a completely separate system.
Solution Approach 2:
The acceleration sensor circuit is designed with multi-functionality, serving both as an acceleration sensor and as a peak detection system. The circuit can operate in different modes: normal acceleration data transmission and peak acceleration tracking. This universal design allows the same hardware to perform multiple functions, improving productivity without proportionally increasing complexity.
3Loss of information
If selective data transmission is implemented, then loss of information is reduced, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by having the peak detector identify and mark peak acceleration values before data transmission. The sample register stores these identified peak values, and the data transmitter is pre-configured to prioritize transmission of marked peak data. This preliminary identification ensures that critical peak information is retained and transmitted even when data volume needs to be reduced.
Data Source
AI summary
An acceleration sensor circuit is disclosed. The acceleration sensor circuit includes a package; an accelerometer to generate acceleration data samples during a peak tracking window; a sample register, to store the acceleration data samples; an acceleration calculation digital circuit, to calculate an acceleration magnitude sample based on the stored acceleration data samples; a peak register, to store a current peak acceleration value; a sample compare circuit, to compare the acceleration magnitude sample to the current peak acceleration value, where the peak register is configured to replace the current peak acceleration value with the acceleration magnitude sample in response to the sample compare circuit determining that the acceleration magnitude sample is greater than the current peak acceleration value; and a memory, configured to store the current peak acceleration value, and to transmit the current peak acceleration value to an external circuit in response to an end of the peak tracking window.