Airplane ground air conditioning unit power-off protection device

Abstract

The utility model discloses a power-off device for an airplane ground air conditioning unit. The power-off device for the airplane ground air conditioning unit comprises a controller, a LoRa wireless communication module, wherein the LoRa wireless communication module is connected with the controller; the sensor module is connected with the controller; and a PLC communication module, wherein the PLC communication module is connected with the controller. The airplane ground air conditioning unit power-off device can effectively monitor and prevent abnormal conditions at the air pipe connecting position so as to improve stability and safety of an airplane ground air conditioning unit.

Description

Technical Field

[0001] The utility model relates to the technical field of safety of aircraft ground air conditioning units, in particular to a power-off protection device for aircraft ground air conditioning units. Background Art

[0002] Aircraft ground air conditioning units are air conditioning equipment used to provide filtered, pressurized, dehumidified, and dehumidified or heated fresh air to aircraft parked on the ground.

[0003] Aircraft ground air conditioning units currently on the market usually use blowers to provide cooling, and the air ducts deliver cold air to the aircraft's air outlets. However, after long-term use, the air duct connections are prone to detachment. There are two types of detachment: one is that the air duct head hangs on the aircraft, and the other is that the air duct head falls off together, resulting in an unstable connection between the air duct and the aircraft, which may scratch the aircraft and affect flight safety. Therefore, some power-off protection devices are needed to detect and prevent aircraft safety accidents caused by air duct detachment.

[0004] In the prior art, although there are some power-off protection devices, most of them are only controlled based on fan failure or overload conditions, or for the detachment of the air duct head hanging on the aircraft. There is a lack of a power-off protection device that can monitor the occurrence of both situations at the same time, making it difficult to effectively monitor and prevent abnormal conditions at the air duct connection to improve the stability and safety of the aircraft ground air conditioning unit. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides a power-off device for an aircraft ground air-conditioning unit.

[0006] In order to solve the above problems, the utility model is implemented according to the following technical solutions:

[0007] The utility model discloses a power-off device for an aircraft ground air-conditioning unit, comprising:

[0008] Controller;

[0009] A LoRa wireless communication module, the LoRa wireless communication module is connected to the controller;

[0010] A sensor module, wherein the sensor module is connected to the controller;

[0011] A PLC communication module is connected to the controller.

[0012] Preferably, the controller is an STM32 microcontroller.

[0013] Preferably, the sensor module includes a multi-axis sensor and a temperature sensor.

[0014] Preferably, the multi-axis sensor is connected to the controller via an IIC integrated circuit bus interface or an SPI serial peripheral interface.

[0015] Preferably, the multi-axis sensor is a nine-axis sensor.

[0016] Preferably, the temperature sensor is connected to the controller via a GPIO interface.

[0017] Preferably, the PLC communication module is connected to the controller via a GPIO interface.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model provides a power-off device for an aircraft ground air-conditioning unit. The power-off device for an aircraft ground air-conditioning unit comprises a controller; a LoRa wireless communication module, wherein the LoRa wireless communication module is connected to the controller; a sensor module, wherein the sensor module is connected to the controller; and a PLC communication module, wherein the PLC communication module is connected to the controller.

[0020] By means of the aircraft ground air conditioning unit power-off device of the present application, abnormal conditions at the air duct connection can be effectively monitored and prevented, thereby improving the stability and safety of the aircraft ground air conditioning unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 The utility model is a schematic diagram of a power-off protection device for an aircraft ground air conditioning unit. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Aircraft ground air conditioning units are air conditioning equipment used to provide fresh air that has been filtered, pressurized, dehumidified, and cooled or heated to aircraft parked on the ground. They are usually composed of the following components: (1) Main unit: The core component of the ground aircraft air conditioning system, usually a large chassis that contains components such as a compressor, condenser, and evaporator for cooling and circulating air. (2) Ducts: The main unit transports cold air to the interior of the aircraft through a series of ducts. Ducts are usually made of soft materials for easy connection and arrangement. (3) Connecting devices: Equipment that connects the main unit and the aircraft, usually including hoses, connectors, and pipes. These connecting devices are responsible for transporting the cold air generated by the main unit to the interior of the aircraft. (4) Control system: Used to control the start and stop, temperature adjustment, and other functions of the ground aircraft air conditioning system, usually located on the control panel of the main unit.

[0025] In order to solve the problem in the prior art that it is difficult for a power-off protection device to effectively monitor and prevent abnormal conditions at air duct connections, the utility model provides a power-off device for an aircraft ground air conditioning unit.

[0026] like Figure 1 The figure shows the principle diagram of the power-off protection device for the aircraft ground air conditioning unit according to the utility model.

[0027] like Figure 1 As shown, the utility model provides a power-off device for an aircraft ground air-conditioning unit, comprising a controller; a LoRa wireless communication module, the LoRa wireless communication module is connected to the controller; a sensor module, the sensor module is connected to the controller; and a PLC communication module, the PLC communication module is connected to the controller.

[0028] It should be noted that the PLC communication module is a hardware module for communicating with the PLC in the aircraft ground air conditioning unit. In the present application, it is used to receive a control signal from a microcontroller to achieve remote power-off control of the aircraft air conditioning system. In a preferred embodiment, the PLC communication module is connected to the network port of the microcontroller and communicates with the PLC of the aircraft ground air conditioning unit through the MODBUS communication protocol.

[0029] Preferably, the controller is a STM32 microcontroller.

[0030] It should be noted that the STM32 microcontroller is based on The STM32 microcontroller is designed to provide MCU users with new development freedom. It includes a series of products that combine high performance, real-time functions, digital signal processing, low power / low voltage operation, connectivity and other features, while maintaining high integration and easy development. The STM32 microcontroller contains a CPU, memory, peripheral interfaces, etc. In this application, the STM32 microcontroller is used to receive and process data from various sensors, such as temperature sensor data, and perform intelligent judgment and control.

[0031] Preferably, the sensor module includes a multi-axis sensor and a temperature sensor.

[0032] In the present application, the temperature sensor is used to monitor the temperature change at the air duct connection to determine whether there is any abnormality.

[0033] It should be noted that a sensor is a device for state monitoring, which can sense the information being measured and convert the information into electrical signals according to certain rules for transmission, processing, and further storage, display, and recording in the device. There are many common types of sensors, such as: voice-controlled lights (sound sensors) used in residential corridors, electric kettles that automatically cut off power after boiling (temperature sensors), etc.

[0034] Specifically, the so-called multi-axis sensors generally refer to three types of sensors: accelerometers, gyroscopes, and magnetometers. Accelerometers can sense acceleration in any direction and obtain results by measuring the force applied to the component in a certain axis, expressed as the magnitude and direction of the axial acceleration. Gyroscopes determine the current motion state of the device (forward, backward, left, right, up, down) by measuring their own rotational motion state (angular velocity), but cannot determine the orientation of the device (east, west, south, north). Magnetometers can be used to test the strength and direction of the magnetic field and locate the orientation of the device. The principle of a magnetometer is similar to that of a compass, and can measure the angle between the current device and the four directions of southeast, northwest, and northeast. Therefore, the so-called multi-axis sensor: that is, by combining the above three types of sensors in pairs or integrating them all, the requirements for monitoring accuracy in different usage environments can be met, and more uses can be derived.

[0035] Preferably, the multi-axis sensor in the present application is a nine-axis sensor, which is a combination of a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer, which are fused by Euler angles and quaternion data.

[0036] Preferably, the temperature sensor is connected to the STM32 microcontroller via an IIC integrated circuit bus interface or an SPI serial peripheral interface. In the present application, the nine-axis sensor is used to monitor the shaking of the air duct and detect whether the air duct is detached or vibrates abnormally.

[0037] Preferably, the temperature sensor is connected to the controller via a GPIO interface.

[0038] Preferably, the PLC communication module is connected to the controller via a GPIO interface.

[0039] In a preferred embodiment, the LoRa wireless communication module, the temperature sensor, and the temperature sensor are installed at the connection of the air duct. When the connection of the air conditioning air duct is abnormally separated, the nine-axis sensor will detect the abnormal vibration of the air duct and transmit the data to the STM32 microcontroller through the IIC interface. After receiving the data, the microcontroller determines that there is an abnormality at the connection of the air duct. If there is an abnormality, the microcontroller immediately sends an alarm signal to the host of the aircraft ground air conditioning unit through the LoRa wireless communication module. After the host receives the signal, the aircraft ground air conditioning unit is controlled to perform a power-off operation through the PLC communication module to ensure the safety of the aircraft. At the same time, the temperature sensor is also monitoring the temperature change at the connection of the air duct. Once the temperature rises abnormally, it will also trigger the microcontroller to perform corresponding processing, that is, the microcontroller will also immediately send an alarm signal to the host of the aircraft ground air conditioning unit through the LoRa wireless communication module.

[0040] For other structures of the power-off protection device for the aircraft ground air conditioning unit described in this embodiment, refer to the prior art.

[0041] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A power-off protection device for an aircraft ground air conditioning unit, characterized in that: include; Controller; A LoRa wireless communication module, the LoRa wireless communication module is connected to the controller; A sensor module, wherein the sensor module is connected to the controller; A PLC communication module is connected to the controller.

2. The aircraft ground air conditioning unit power failure protection device according to claim 1, characterized in that: The controller is an STM32 microcontroller.

3. The aircraft ground air conditioning unit power failure protection device according to claim 1, characterized in that: The sensor module comprises: Multi-axis sensors and temperature sensors.

4. The aircraft ground air conditioning unit power failure protection device according to claim 3, characterized in that: The multi-axis sensor is connected to the controller via an IIC integrated circuit bus interface or an SPI serial peripheral interface.

5. The aircraft ground air conditioning unit power failure protection device according to claim 4, characterized in that: The multi-axis sensor is a nine-axis sensor.

6. The aircraft ground air conditioning unit power failure protection device according to claim 3, characterized in that: The temperature sensor is connected to the controller via a GPIO interface.

7. The aircraft ground air conditioning unit power failure protection device according to claim 1, characterized in that: The PLC communication module is connected to the controller via a GPIO interface.

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