Sensor Bus Interface for Scalable Multi-Sensor Integration
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Solution Overview
Problem
The proliferation of sensors in electronic devices increases the need for a scalable and cost-effective interface between the host and multiple sensors, leading to higher costs, board footprint, and complexity, which existing technologies have not adequately addressed.
Innovation Solution
A sensor bus interface is implemented on one or more controllers of the electronic device, utilizing feedback parameters from sensors like accelerometers, magnetometers, and gyroscopes to adjust their weight in communication, reducing the impact as their outputs increase, and dynamically adjusting interrupt priorities based on device conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple sensors are added to electronic devices, then sensing capabilities and functionality are improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple sensor interfaces and control functions into a single integrated sensor bus interface controller. This controller manages multiple sensors (accelerometer, gyroscope, magnetometer, etc.) through a unified interface, reducing the number of separate interface circuits and control logic required, thereby decreasing overall device complexity while maintaining support for multiple sensor types
Solution Approach 2:
The sensor bus interface is designed as a universal controller that can interface with multiple different sensor types through a single standardized interface. The controller includes configurable parameters and adjustable feedback mechanisms that adapt to different sensor characteristics, allowing one interface to serve multiple sensing functions without requiring dedicated interfaces for each sensor type
2Adaptability or versatility
If multiple sensors are added to electronic devices, then sensing capabilities are improved, but board footprint increases
Solution Approach 1:
The patent integrates multiple sensor interface functions into a single controller block on the board, reducing the number of separate interface circuits required. This consolidation decreases the overall board footprint while maintaining the ability to connect to multiple sensors through a shared bus interface
3Adaptability or versatility
If multiple sensors are added to electronic devices, then sensing capabilities are improved, but cost increases
Solution Approach 1:
The sensor bus interface implements a universal controller design that can accommodate multiple sensor types through a single interface circuit. This multi-functionality reduces the total component count and interface circuitry required, leading to lower manufacturing costs compared to implementing separate dedicated interfaces for each sensor type
4Measurement precision
If sensor output weight is increased, then measurement precision is improved, but communication bandwidth consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of sensor output weighting based on device operational state and environmental conditions. The controller automatically adjusts which sensors are active and their respective weightings in real-time, reducing the amount of data that needs to be communicated when full precision is not required, while maintaining high measurement precision when conditions demand it
Solution Approach 2:
The sensor bus interface includes configurable parameters that allow dynamic adjustment of sensor weighting and output frequency. These parameters can be modified based on power availability, processing capacity, and required measurement precision, enabling the system to optimize the balance between measurement accuracy and communication bandwidth consumption
Data Source
AI summary
In one example a sensor module comprises at least one sensor and a controller communicatively coupled to the at least one sensor by a communication bus, the controller comprising logic, at least partially including hardware logic, configured to generate a signal to configure the at least one sensor in a notify power state mode and place the signal on a communication bus coupled to the at least one sensor. Other examples may be described.