Inertial Sensor Merging Axes for High-Accuracy Output
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Solution Overview
Problem
Existing inertial sensor systems require additional sensors for high-accuracy detection, leading to complex adjustments and interface changes in the host device, making it difficult to achieve high accuracy in specific axes without modifying the host device's specifications.
Innovation Solution
The inertial sensor device includes a first sensor for detecting physical quantities in three axes and a second sensor for high-accuracy detection in one axis, with a processing circuit that outputs the high-accuracy data instead of the standard data to the host, allowing for improved accuracy without altering the host device's interface specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate sensor is added to achieve high-accuracy detection, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensors (first sensor for general detection and second sensor for high-accuracy detection) into a single integrated device that outputs unified data through a single interface. This merging approach allows the host device to access high-accuracy data without adding separate sensor interfaces, thereby improving measurement precision while avoiding increased device complexity
Solution Approach 2:
The integrated sensor device is designed to perform multiple functions: it provides both general detection capabilities through the first sensor and high-accuracy detection through the second sensor, all accessible via a single interface. This multi-functionality allows the host device to utilize high-accuracy data without requiring separate interface specifications for different sensor types
2Measurement precision
If a separate sensor is coupled to the host device, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
By merging the first sensor and second sensor into a single integrated device with a unified interface, the patent eliminates the need for the host device to manage multiple separate sensor connections. The host device simply needs to connect to this single integrated device, maintaining ease of operation while gaining access to high-accuracy detection capabilities through the combined sensor system
3Measurement precision
If interface specifications are changed to accommodate additional sensors, then measurement precision is improved, but adaptability deteriorates
Solution Approach 1:
The integrated sensor device is designed with universal interface capabilities that allow it to communicate with host devices without requiring changes to existing interface specifications. The device can provide high-accuracy detection data through the same interface used for general detection, maintaining interface compatibility and adaptability while improving measurement precision
Data Source
AI summary
An inertial sensor device includes a first interface, a second sensor, a second interface, a host interface, and a processing circuit. The first interface is an interface for a first sensor configured to detect a first physical quantity in a first detection axis, a second physical quantity in a second detection axis, and a third physical quantity in a third detection axis. The second sensor is configured to detect the physical quantity in the third detection axis as a high-accuracy third physical quantity with a higher accuracy than the first sensor. The processing circuit is configured to output the first physical quantity and the second physical quantity to a host via the host interface, and output the high-accuracy third physical quantity instead of the third physical quantity to the host via the host interface.