Modular Heating Control Unit for Aircraft Ice Protection
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Solution Overview
Problem
Ice protection systems for aircraft and spacecraft have high installation complexity and wiring requirements, necessitating a solution that reduces complexity and weight while maintaining effective ice prevention.
Innovation Solution
A modular heating control unit integrated with a temperature sensor and microcontroller, which is locally placed near heaters, reducing wiring complexity and using a voltage converter to connect to standard aircraft power supplies, along with wireless communication and fault detection for enhanced safety and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central control unit with locally installed temperature sensors is used for ice protection, then effective ice formation prevention is achieved, but installation complexity and wiring requirements increase significantly
Solution Approach 1:
The system is divided into independent modular heating control units, each containing its own microcontroller and temperature sensor. Each module autonomously controls a specific heater, eliminating the need for complex central control wiring while maintaining effective ice protection at each location.
Solution Approach 2:
The temperature sensor and control electronics are integrated into a single compact module that directly controls the heater. This merging of sensing and actuation functions reduces the number of separate components and wiring connections needed, simplifying installation while maintaining reliable ice protection.
2Device complexity
If multiple modular control modules are distributed throughout the aircraft for local heater control, then wiring complexity is reduced, but system weight increases due to additional components
Solution Approach 1:
The temperature sensor, microcontroller, and heater control circuitry are merged into a single integrated module, reducing the total component count and associated wiring harness weight compared to distributed separate components.
Solution Approach 2:
The modular design uses standardized multi-functional units that can control different heaters (antennas, wings, tail surfaces) across the aircraft. This universality reduces the need for specialized components at each location, minimizing overall system weight while maintaining simplified wiring architecture.
3Ease of manufacture
If temperature sensors are installed away from the heater elements, then easier installation is achieved, but temperature measurement accuracy decreases
Solution Approach 1:
The temperature sensor is integrated directly into the heating control module positioned at or near the heater element location. This ensures accurate local temperature measurement while the modular design maintains installation simplicity through standardized mounting interfaces.
Solution Approach 2:
Each heating control unit is equipped with its own temperature sensor positioned locally at the specific component it protects. This local sensing ensures accurate temperature measurement for each critical area (antennas, wings, tail) while the modular architecture keeps installation straightforward through standardized modules.
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
The solution significantly reduces installation complexity and system weight by minimizing wiring, ensuring reliable ice protection through localized control and power management, while enhancing operational safety and maintenance accessibility.
Implementation Method 1
a temperature sensor arranged within the controller housing and coupled to the microcontroller, wherein an active sensor surface of the temperature sensor forms at least part of an outer surface of the controller housing, and the temperature sensor is adapted to measure a temperature of the tube or conduit
Implementation Method 2
The heater control system utilizes electronic temperature control at each of a number of interconnected heaters for monitoring and operating heaters within a narrow temperature range
Implementation Method 3
a microcontroller being configured to generate a control signal for a heater and to output the control signal via a control line to the heater
Data Source
Figure 1~3
AI summary
The present invention pertains to a heating control unit (1), comprising a controller housing (2), a microcontroller (3) arranged within the controller housing, the microcontroller being configured to generate a control signal for a heater (7) and to output the control signal via a control line (5) to the heater, and a temperature sensor (4) arranged within the controller housing and coupled to the microcontroller, wherein an active sensor surface of the temperature sensor forms at least part of an outer surface (2a) of the controller housing.