Shaped Heating Element for LCD Readability in Cold Environments
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Solution Overview
Problem
Field-device display modules, particularly those using LCDs, face readability issues due to freezing at low temperatures, which impairs the ability to accurately read measured values in industrial production environments.
Innovation Solution
A heating device with a heating element adapted to the shape of the field-device display module, coupled for precise thermal energy transfer, and a control device to manage thermal energy delivery, ensuring the display operates within a usable temperature range, even in cold conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display module is used in low-temperature environments, then the field of application is extended, but the display freezes and becomes unreadable
Solution Approach 1:
The heating element is activated before the display is read to preheat the display module and prevent freezing. This preliminary heating action ensures the display remains in a readable state throughout the measurement process, resolving the contradiction between extending application to cold environments and maintaining readability reliability.
Solution Approach 2:
A heating element serves as an intermediary component between the power source and the display module. This mediator transfers thermal energy to the display, preventing the direct harmful effect of low temperatures on the display's readability while enabling operation in previously inaccessible cold environments.
2Reliability
If a heating element is added to prevent freezing, then readability is improved, but device complexity increases
Solution Approach 1:
The heating element is integrated with the display module housing, merging the heating function into the existing display structure. This integration approach improves readability through reliable heating while minimizing the increase in device complexity by combining functions rather than adding separate independent components.
3Reliability
If the heating element is continuously activated, then the display remains readable, but energy consumption increases
Solution Approach 1:
The heating element is activated periodically only when needed for reading the display, rather than continuously. The system heats the display before a reading operation and deactivates it when reading is complete, maintaining readability reliability during critical moments while significantly reducing overall energy consumption during non-reading periods.
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
Enhances the reliability of reading measured values by preventing freezing, allowing for accurate display of data in low-temperature environments, extending the field of application for field devices to colder regions, and enabling efficient heating only during reading operations.
Implementation Method 1
The heating device is adapted to convert an electrical current to thermal energy
Implementation Method 2
the heating element is adapted to the shape of the field-device display module... coupled to the field-device display module such that by the heating element the field-device display module can be heated
Data Source
AI summary
A heating device for a field-device display module includes a heating element. The heating element is adapted to the shape of the field-device display module and is equipped such that it converts an electrical current to thermal energy. The heating element can be coupled to the field-device display module such that by the heating element the field-device display module can be heated.