Programmable Drive-Sense Circuit for Single-Line Sensor Detection
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Solution Overview
Problem
Current data communication systems in sensor applications face challenges in efficiently processing and interpreting signals from diverse sensors, particularly in accurately detecting changes in electrical characteristics of sensors, which affects the reliability and precision of data collection and actuation.
Innovation Solution
The implementation of a drive sense unit that utilizes a power signal change detection circuit and a regulation circuit to detect changes in electrical characteristics of sensors and regulate power signals, enabling precise data representation and actuation, while minimizing noise and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a drive sense unit with power signal change detection circuit is implemented, then measurement precision and reliability of sensor data are improved, but device complexity increases
Solution Approach 1:
The patent combines the drive circuit and sense circuit into a single integrated drive sense unit, merging multiple functions (signal generation, signal detection, and electrical characteristic measurement) into one unified structure. This integration reduces the number of separate components while maintaining high measurement precision through the power signal change detection circuit.
Solution Approach 2:
The drive sense unit is designed to perform multiple functions: it generates drive signals for actuators, detects sensor signals, measures electrical characteristics, and regulates power signals. This multi-functional design improves measurement precision across different sensor types without proportionally increasing device complexity.
2Reliability
If power signal regulation circuit is added to detect and regulate power signals, then reliability of data collection is improved, but use of energy increases
Solution Approach 1:
The power signal regulation circuit implements feedback control by continuously monitoring the power signal and adjusting it based on detected changes. This feedback mechanism ensures reliable data collection by compensating for electrical characteristic variations while optimizing power consumption through adaptive regulation rather than constant high-power operation.
Solution Approach 2:
The regulation circuit dynamically changes power signal parameters (voltage, current, frequency) based on detected sensor electrical characteristics. By adapting these parameters to match actual sensor requirements, the system maintains high reliability while minimizing unnecessary power consumption.
3Adaptability or versatility
If drive sense unit with multiple detection functions is implemented, then adaptability to diverse sensors is improved, but device complexity increases
Solution Approach 1:
The drive sense unit incorporates universal detection capabilities that can handle multiple sensor types (capacitive, resistive, inductive) through a single integrated circuit design. The power signal change detection circuit is configured to adapt its detection parameters based on the connected sensor type, providing broad adaptability without requiring multiple specialized circuits.
Solution Approach 2:
The drive sense unit employs dynamic configuration capabilities where the detection circuit can adjust its operating parameters and detection methods based on the characteristics of the connected sensor. This dynamic adaptability allows the same hardware to work with diverse sensor types while keeping the overall device complexity manageable through software or firmware control.
Data Source
AI summary
A programmable drive-sense unit (DSU) includes a drive-sense circuit operably coupled to a load, wherein the drive-sense circuit is configured to drive and simultaneously to sense the load via a single line, and produce an analog output based on the sensing the load. The programmable DSU also includes an analog to digital circuit operably coupled to the drive-sense circuit, where the analog to digital circuit is operable to generate a digital output based on the analog output and in accordance with one or more programmable operational parameters to achieve one or more of load sensing objectives associated with the sensing of the load and data processing objectives associated with the sensing of the load.