Sensor Heating Control Adapts Power to Functional Group
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Solution Overview
Problem
Existing sensor heating technologies face inefficiencies at low temperatures, particularly with optoelectronic sensors, as they require high peak power consumption due to variable electrical demands, leading to overdimensioning of power supply components and increased thermal stress, which affects reliability and network stability.
Innovation Solution
A sensor heating system with a heating control that adapts power consumption based on the sensor's functional group components, using a controllable electronic heating element and current measurement to maintain constant total power consumption, reducing peak demands and ensuring uniform heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional heating assembly with constant power output is used, then the sensor can be heated to the required temperature range, but the power supply components must be overdimensioned to handle peak power demands
Solution Approach 1:
The heating assembly transitions from a static constant-power design to a dynamic variable-power system that continuously adjusts its output based on real-time temperature feedback from the sensor, thereby matching power delivery to actual heating needs and eliminating peak power demands
Solution Approach 2:
A temperature sensing mechanism provides continuous feedback to the heating control unit, which then adjusts the heating power accordingly. This closed-loop control ensures the sensor reaches and maintains the required temperature range without requiring excessive peak power
2Temperature
If cyclic switching on and off of heating is used to achieve average temperature, then the desired internal temperature is reached through thermal inertia, but electrical power consumption fluctuates greatly with high and low power demands
Solution Approach 1:
The system uses periodic temperature measurements and controlled heating adjustments rather than simple on/off cycling. The heating control unit applies periodic or continuous variable-power heating based on temperature feedback, smoothing out power consumption fluctuations while maintaining the desired thermal effect
Solution Approach 2:
The heating system changes the power parameter dynamically rather than using fixed on/off states. By continuously adjusting the heating power level based on temperature feedback, the system maintains stable power consumption while achieving the required thermal conditions through parameter optimization
3Adaptability or versatility
If heating power is increased to compensate for cold environment, then the sensor can operate in low temperatures, but thermal stress and thermal expansion effects increase reducing reliability
Solution Approach 1:
The heating system dynamically adjusts power output to provide just enough heat to maintain operational temperature, avoiding excessive thermal stress. The continuous feedback control prevents thermal shocks and gradual heating reduces expansion stresses on components and solder joints
Solution Approach 2:
The system gradually increases heating power as temperature drops rather than applying sudden high power, cushioning against thermal shocks. This progressive heating approach minimizes thermal stress on sensitive components while still enabling operation in cold environments
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
This approach results in more uniform electrical power consumption, reduced power supply demands, increased network stability, and improved reliability by minimizing thermal fluctuations and stress on components, allowing for smaller power packs and simpler installation technology.
Implementation Method 1
a heating device (14) having a heating control (20) in order also to bring the sensor (10) to a temperature range in a cold environment and to hold it there
Data Source
AI summary
A sensor (10) is provided that has at least one sensor functional group (12), a heating device (14, 22), and a heating control (14, 20) to control a heating power (Pheating) of the heating device (14, 22). In this respect, the heating control (20) is configured to adapt the heating power (Pheating) to a power consumption (Psensor) of the sensor functional group (12).