Gauge Reader Using Image Processing for Remote Monitoring
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Solution Overview
Problem
Existing gauge monitoring systems face challenges in integrating analog gauges with central control systems, as they typically do not output electrical signals, requiring invasive replacement or complex image processing dependent on optimal light conditions.
Innovation Solution
A gauge reader system that includes a physical attachment structure, image sensor, image processing section, and transmitting section, allowing for non-invasive attachment to existing gauges and conversion of gauge images into transmittable signals, independent of external lighting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an entire gauge is replaced with a transmitting unit, then the gauge can output electrical signals for system integration, but the process must be shut down and additional wiring is required
Solution Approach 1:
The patent uses a camera to capture an optical image of the gauge dial and processes this image copy to extract measurement values, eliminating the need to replace the physical gauge with a transmitting unit. The gauge face is photographed and the image is analyzed to obtain the measurement data.
Solution Approach 2:
The patent replaces the mechanical/optical gauge system with an electronic image processing system. Instead of using a mechanical gauge with electrical output, the system uses a camera to capture the gauge face image and processes it digitally to extract measurement values and transmit them electronically.
2Adaptability or versatility
If a digital image is captured with a webcam and algorithms are applied, then the gauge can be integrated with control systems, but considerable processing power is required
Solution Approach 1:
The patent extracts only the essential measurement information from the gauge face image by identifying specific features such as the needle position and dial markings. Rather than processing the entire image with complex algorithms, the system focuses on extracting the critical measurement data points.
Solution Approach 2:
The patent transforms the visual gauge reading into digital measurement values by analyzing image parameters such as pixel coordinates of the needle tip and dial scale markings. The system converts optical information into quantitative measurement data through parameter extraction and mathematical calculation.
3Loss of information
If image processing is performed on gauge images, then the gauge reading can be transmitted, but the system becomes dependent on optimal light conditions
Solution Approach 1:
The patent applies preliminary image processing steps such as contrast enhancement, edge detection, and noise filtering to the captured gauge image before extracting measurement values. These preprocessing operations ensure that the measurement extraction is robust against variations in lighting conditions.
Solution Approach 2:
The patent introduces an image processing intermediary layer that captures the gauge face image and processes it to extract measurement values. This intermediary system acts as a mediator between the optical gauge and the electronic control system, converting visual information into digital signals while compensating for environmental factors.
4Loss of information
If a transmitting unit is installed on the gauge, then the gauge can be monitored remotely, but leak testing and signal verification are required
Solution Approach 1:
The patent creates a digital copy of the gauge reading through image capture and processing, which can be transmitted to remote monitoring systems. This digital copy eliminates the need for physical transmitting units that would require leak testing and signal verification.
Solution Approach 2:
The patent replaces the mechanical transmitting unit with an electronic image processing and transmission system. The gauge reading is captured as an image, processed to extract measurement values, and transmitted digitally, eliminating the need for physical connections and associated testing requirements.
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 remote monitoring of gauge values without replacing existing gauges, reducing labor and processing power requirements, and providing a compact, efficient solution for integrating gauges into automated systems.
Implementation Method 1
An image sensor can be attached to read data directly from the gauge
Data Source
AI summary
A gauge monitoring system can include a parameter store that stores parameter data in digital form for at least one gauge. The parameter data can correspond to different gauge readings. An image processing circuit can be coupled to receive image data from an image sensor physically attached to at least one gauge. The image processing circuit can analyze the image data to generate image data points corresponding to the gauge image and generates a gauge reading from the image data points and the parameter data. A transmitting circuit transmit the gauge reading to a location remote from the gauge. A control circuit that activates the image processing circuit and couples the gauge reading to the transmitting circuit.