Serial Interface Circuit Device for Multi-Sensor Data Uniformity
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Solution Overview
Problem
Existing systems face difficulties in handling data from sensors with different bit widths, leading to increased processing load and complexity on the host side due to the need for bit-width matching and handling of serial data from multiple sensors with varying bit widths.
Innovation Solution
A circuit device that includes a detection circuit and a serial interface capable of adding complementary bits to detection data from physical quantity transducers, allowing for uniform bit width output and flexible positioning of these bits based on a format switching register, enabling simplified processing on the host side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If data from sensors with different bit widths are output directly without modification, then the original data precision is preserved, but the processing load and complexity on the host side increases due to bit-width matching requirements
Solution Approach 1:
The patent applies preliminary action by performing bit-width unification in the sensor module before data transmission to the host device. The control unit adds complementary bits to each sensor's output data according to a predetermined format, ensuring all data arrives at the host with uniform bit width. This eliminates the need for bit-width matching processing on the host side, reducing processing complexity while preserving original data precision through proper placement of complementary bits.
2Adaptability or versatility
If multiple circuit devices are connected to the host device through serial communication, then the system integrates more sensors, but data collisions occur and handling becomes difficult due to varying bit widths
Solution Approach 1:
The patent applies homogeneity by standardizing the output data format from multiple sensor modules to be identical. Each control unit formats its sensor data with the same bit width and structure using complementary bits, creating homogeneous data streams. This allows the host device to handle data from multiple sensors uniformly without special processing for bit-width differences, preventing data collisions and simplifying data handling while enabling integration of multiple circuit devices.
3Adaptability or versatility
If bit-width matching is performed on the host side, then data from different sensors can be processed uniformly, but the number of processes increases and processing load increases
Solution Approach 1:
The patent extracts the bit-width matching function from the host device and relocates it to the sensor module's control unit. The control unit performs the bit-width unification locally by adding complementary bits to each sensor's output before transmission. This extraction eliminates the need for bit-width matching processes on the host side, maintaining data compatibility while significantly reducing the processing load and improving overall processing efficiency.
Data Source
AI summary
A circuit device includes a detection circuit adapted to output first through n-th detection data, and a serial interface adapted to output the first through n-th detection data as serial data. In the case in which i-th detection data (1≤i≤n) out of the first through n-th detection data is M bits, and j-th detection data (1≤j≤n, j≠i) is N bits (N<M), the serial interface outputs the serial data added with (M−N) complementary bits on an MSB side of the j-th detection data.