Mass Flow Controller Real-Time Diagnostics
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Solution Overview
Problem
Existing flow controller systems lack real-time diagnostic capabilities to accurately measure and control the flow of gases or fluids, leading to potential defects in products due to unknown or incorrect flow rates.
Innovation Solution
A mass flow controller system equipped with multiple sensors, including pressure, temperature, and independent sensing techniques like thermal or MEMS sensors, which generate signals to control and verify the flow rate, allowing for real-time monitoring and alarm generation when deviations occur, ensuring precise control and delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional flow control systems are used, then device complexity is reduced, but measurement precision and reliability of flow rate monitoring deteriorate
Solution Approach 1:
The patent combines multiple sensing technologies (thermal sensors, MEMS sensors, pressure sensors, temperature sensors) into an integrated flow measurement system. This merging of different sensor types allows for cross-validation of measurements and improved overall accuracy while managing complexity through systematic integration.
Solution Approach 2:
The system implements real-time feedback by continuously comparing measurements from multiple independent sensors. The controller receives signals from all sensors, compares the measured flow rates, and uses this feedback to detect deviations and generate alarms, thereby improving measurement reliability through self-validation.
2Reliability
If real-time monitoring with multiple sensors is implemented, then reliability of flow control is improved, but device complexity increases
Solution Approach 1:
The flow measurement system performs self-diagnosis by comparing measurements from multiple independent sensors. The system automatically detects discrepancies between sensors and generates alarms without external intervention, enabling self-service monitoring that improves reliability while minimizing the need for additional external control systems.
Solution Approach 2:
The controller is designed to perform multiple functions: it controls the flow based on setpoint requirements, monitors measurements from multiple sensors, compares sensor readings, detects deviations, and generates alarms. This multi-functionality consolidates complexity into a single control unit rather than requiring separate systems for each function.
3Measurement precision
If independent sensing techniques are used for verification, then measurement precision is improved, but loss of time for signal processing increases
Solution Approach 1:
The system continuously monitors flow using multiple sensors simultaneously rather than sequentially. All sensors operate in parallel and provide continuous measurements, eliminating time losses associated with sequential measurement or periodic sampling. The controller continuously compares sensor signals in real-time, ensuring uninterrupted accurate monitoring.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time monitoring and control of fluid or gas flow, reducing the likelihood of defective products by providing accurate flow rate measurements and immediate alerts for deviations, thus enhancing the reliability of the flow control process.
Implementation Method 1
independent sensing techniques like thermal or MEMS sensors
Implementation Method 2
independent sensing techniques like thermal or MEMS sensors
Implementation Method 3
pressure, temperature, and independent sensing techniques like thermal or MEMS sensors
Implementation Method 4
pressure, temperature, and independent sensing techniques like thermal or MEMS sensors
Data Source
AI summary
A device that includes a flow controller system that comprises one or more sensors, a flow measurement sensor that comprises one or more sensors. The flow measurement sensor is configured to generate a signal based on determine the difference between the flow as measured by the flow controller system and the flow measurement system in real time.