PoE Infrared Panel Temperature Sensing for Tight Electrical Cabinets
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Solution Overview
Problem
Conventional temperature monitoring technologies for power distribution panels are limited by space constraints and inadequate response speed, leading to inaccurate temperature measurement and increased risk of fire due to insufficient installation of contact-type and infrared sensor systems.
Innovation Solution
A fully-integrated temperature sensor device utilizing a Power over Ethernet (PoE) interface, DC to DC step down converter, infrared temperature sensor arrays, and a microcontroller with a communication interface, allowing for compact installation and dynamic threshold adjustment based on ambient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If contact-type temperature transducers are used for temperature monitoring, then temperature measurement accuracy is improved, but device volume and wiring complexity increase, making installation difficult in narrow spaces
Solution Approach 1:
The patent replaces contact-type temperature transducers with an infrared temperature sensor array that performs non-contact temperature measurement. This substitution eliminates the need for physical contact with monitored components, significantly reducing device volume and wiring complexity while maintaining measurement capability through optical detection of thermal radiation
Solution Approach 2:
The temperature sensor device integrates multiple functions including temperature monitoring, PoE power supply reception, and communication capabilities into a single compact unit. This multi-functional integration allows the device to perform comprehensive temperature monitoring without requiring separate components, thereby reducing overall device volume and simplifying installation in narrow spaces
2Speed
If infrared sensor arrays are used for remote temperature detection, then response speed is improved, but device volume and power supply requirements increase, making installation difficult in narrow spaces
Solution Approach 1:
The device integrates the infrared temperature sensor array with PoE power supply reception and communication functions into a single compact unit. This multi-functional integration enables the device to achieve fast response speed through infrared detection while maintaining a small form factor suitable for narrow installation spaces by eliminating the need for separate power supply and communication modules
Solution Approach 2:
The patent uses infrared radiation detection to achieve remote, non-contact temperature measurement, which provides fast response speed. By combining this with PoE power delivery through existing Ethernet infrastructure, the system achieves rapid temperature monitoring without requiring additional bulky power supply equipment
3Adaptability or versatility
If multiple contact-type temperature transducers are installed for multipoint monitoring, then temperature monitoring coverage is improved, but space requirements and wiring complexity increase
Solution Approach 1:
The temperature sensor device incorporates multiple infrared sensing elements arranged in an array configuration, allowing each element to monitor a specific zone. This segmentation enables comprehensive multipoint temperature monitoring coverage while keeping the system compact, as all sensing elements are integrated into a single device rather than requiring multiple separate transducers distributed throughout the panel
Solution Approach 2:
The patent combines multiple temperature sensing capabilities, power supply reception, and communication functions into a single integrated device. This merging eliminates the need for separate wiring for each monitoring point, as the integrated device can monitor multiple zones through its array of infrared sensors while using a single PoE power connection and communication interface
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 accurate, efficient, and space-efficient temperature monitoring with reduced false alarms by dynamically adjusting thresholds based on ambient conditions, ensuring timely over-heat warnings and fire prevention.
Implementation Method 1
at least one infrared temperature sensor array, pointed to a monitored area of a power distribution panel, receiving an infrared ray radiated by the monitored area and generating a corresponding sensation signal
Data Source
AI summary
A temperature sensor device for a power distribution panel includes a Power over Ethernet (PoE) interface, a DC-to-DC step down converter, at least one infrared temperature sensor array, a microcontroller and a communication interface. The PoE interface is used to obtain a required power supply from the Ethernet network. The DC-to-DC step down converter steps down the power supply from a first voltage to a second voltage. The infrared temperature sensor array receives infrared rays radiated from a monitored area of the power distribution panel and generates a corresponding sensation signal. The microcontroller receives the sensation signal and generates an alert signal when the sensed temperature of the monitored area exceeds a preset threshold. The threshold can be dynamically adjusted according to time of day or day of months. The communication interface enables the communication between an external electronic device and the temperature sensor device for the power distribution panel.