System and method for heating total pressure sensor and static pressure sensor

Abstract

The invention belongs to the technical field of atmosphere data systems, and particularly relates to a total and static pressure sensor heating system and method. According to the system, a total pressure sensor is connected with an atmosphere data computer through a total pressure pipeline; the static pressure sensor is connected with an atmosphere data computer through a static pressure pipeline; one end of the first loop control pipeline is connected with the onboard air source system, the other end of the first loop control pipeline is connected with the total pressure sensor, one end of the second loop control pipeline is connected with the onboard air source system, and the other end of the second loop control pipeline is connected with the static pressure sensor; the first electric control one-way valve is arranged on the first loop control pipeline, and the second electric control one-way valve is arranged on the second loop control pipeline; the atmosphere data computer is used for controlling opening or closing of the first electric control one-way valve according to the received signals of the total pressure sensor and used for controlling opening or closing of the second electric control one-way valve according to the received signals of the static pressure sensor. According to the invention, standby heating measures can be provided, the system safety is improved, and the flight mission and flight safety are ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of atmospheric data systems, and in particular, relates to a system and method for heating total and static pressure sensors. Background Art

[0002] Aircraft are generally equipped with total pressure sensors and static pressure sensors to collect total pressure and static pressure information of incoming air, and transmit it to the atmospheric data computer through pipelines. After processing, the atmospheric data computer calculates atmospheric data parameters such as altitude, speed, Mach number and vertical speed, and transmits them to the flight control, avionics and other systems on board through the specified bus.

[0003] In order to ensure that the total and static pressure sensors can provide accurate and reliable total and static pressure information to the atmospheric data computer in the air, electric heating wires are generally arranged around the head of the total pressure sensor and the pressure hole of the static pressure sensor to avoid ice blockage. However, when the electric heating wire inside the total and static pressure sensors breaks and the heating function fails, there is a high probability that ice will form in the air, blocking the total and static pressure holes, causing the atmospheric data computer to be unable to normally calculate the relevant atmospheric data parameters, thereby affecting the flight mission and even flight safety.

[0004] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0005] The purpose of the present application is to provide a system and method for heating total and static pressure sensors, so as to solve the problem in the prior art that atmospheric data parameters cannot be properly calculated when the heating of total and static pressure sensors fails.

[0006] The technical solution of this application is:

[0007] A first aspect of the present application provides a system for heating a total and static pressure sensor, comprising:

[0008] A total pressure sensor, wherein the total pressure sensor is connected to an atmospheric data computer via a total pressure pipeline;

[0009] A static pressure sensor connected to an air data computer via a static pressure pipeline;

[0010] The environmental control pipeline comprises a first environmental control pipeline and a second environmental control pipeline, wherein one end of the first environmental control pipeline is connected to the onboard air source system and the other end is connected to the total pressure sensor, and one end of the second environmental control pipeline is connected to the onboard air source system and the other end is connected to the static pressure sensor;

[0011] The electrically controlled one-way valve comprises a first electrically controlled one-way valve and a second electrically controlled one-way valve, wherein the first electrically controlled one-way valve is arranged on the first environmental control pipeline, and the second electrically controlled one-way valve is arranged on the second environmental control pipeline;

[0012] An atmospheric data computer, the atmospheric data computer is used to control the opening or closing of the first electrically controlled one-way valve according to the signal received from the total pressure sensor, and is used to control the opening or closing of the second electrically controlled one-way valve according to the signal received from the static pressure sensor.

[0013] In at least one embodiment of the present application, a first gas line nozzle is provided on the total pressure sensor, and the first environmental control pipeline is connected to the first gas line nozzle.

[0014] In at least one embodiment of the present application, a second air line nozzle is provided on the static pressure sensor, and the second environmental control pipeline is connected to the second air line nozzle.

[0015] In at least one embodiment of the present application, the first environmental control pipeline and the second environmental control pipeline are both wrapped with a heat insulation layer.

[0016] In at least one embodiment of the present application, the air data computer receives a first pressure signal from the total pressure sensor through a total pressure pipeline, and converts the first pressure signal into a first current signal.

[0017] In at least one embodiment of the present application, the atmospheric data computer is used to control the opening or closing of the first electrically controlled one-way valve according to the first current signal.

[0018] In at least one embodiment of the present application, the air data computer receives a second pressure signal from the static pressure sensor through a static pressure pipeline, and converts the second pressure signal into a second current signal.

[0019] In at least one embodiment of the present application, the atmospheric data computer is used to control the opening or closing of the second electrically controlled one-way valve according to the second current signal.

[0020] In at least one embodiment of the present application, the air data computer is used to control the opening or closing of the first electrically controlled one-way valve according to a received pilot instruction.

[0021] In at least one embodiment of the present application, the air data computer is used to control the opening or closing of the second electronically controlled one-way valve according to a received pilot instruction.

[0022] The second aspect of the present application provides a method for heating a total and static pressure sensor, based on the system for heating a total and static pressure sensor as described above, comprising:

[0023] When the air data computer detects that the heating of the total pressure sensor and / or the static pressure sensor fails: a valve opening command is sent to the electric control check valve;

[0024] After the valve of the electric control check valve is opened, the high-temperature and high-pressure airflow output by the onboard air source system is transmitted to the total pressure sensor and / or static pressure sensor with heating failure through the environmental control pipeline;

[0025] The ice accumulated on the surface of the total pressure sensor and / or the static pressure sensor is blown away or melted by the high-temperature and high-pressure airflow, so that the sensor can work normally.

[0026] In at least one embodiment of the present application, the atmospheric data computer determines whether the heating state is normal by detecting the current signal of the total pressure sensor and / or the static pressure sensor.

[0027] In at least one embodiment of the present application, the atmospheric data computer sends a valve opening instruction to the electrically controlled one-way valve via an electrical signal.

[0028] The invention has at least the following beneficial technical effects:

[0029] The system for heating the total and static pressure sensors of the present application can, when the heating functions of the total and static pressure sensors on the aircraft fail individually or completely, resulting in ice blockage, output high-temperature and high-pressure airflow to the sensors through the existing system on the aircraft to blow away or melt the ice on their surfaces, restore them to normal operation, and ensure the output of reliable total and static pressure information to the atmospheric data computer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of a system for heating a total and static pressure sensor according to an embodiment of the present application;

[0031] Figure 2 It is a flow chart of a method for heating a static pressure sensor according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0034] The following is combined with Figure 1 to Figure 2 This application is described in further detail.

[0035] A first aspect of the present application provides a system for heating total and static pressure sensors, comprising: a total pressure sensor, a static pressure sensor, an environmental control pipeline, an electrically controlled one-way valve, and an atmospheric data computer.

[0036] Specifically, Figure 1 As shown, the total pressure sensor is connected to the atmospheric data computer through the total pressure pipeline; the static pressure sensor is connected to the atmospheric data computer through the static pressure pipeline; the environmental control pipeline includes a first environmental control pipeline and a second environmental control pipeline, one end of the first environmental control pipeline is connected to the on-board air source system, and the other end is connected to the total pressure sensor, one end of the second environmental control pipeline is connected to the on-board air source system, and the other end is connected to the static pressure sensor; the electric control check valve includes a first electric control check valve and a second electric control check valve, the first electric control check valve is arranged on the first environmental control pipeline, and the second electric control check valve is arranged on the second environmental control pipeline; the electric control check valve mainly includes an electromagnet, a mechanical check valve and a control circuit, and the control circuit is controlled by the atmospheric data computer. The atmospheric data computer is used to control the opening or closing of the first electric control check valve according to the received signal of the total pressure sensor, and is used to control the opening or closing of the second electric control check valve according to the received signal of the static pressure sensor.

[0037] In a preferred embodiment of the present application, the total pressure sensor and the static pressure sensor are each provided with a separate gas line nozzle for connecting the pipeline of the electric-controlled one-way valve. The total pressure sensor is provided with a first gas line nozzle, and the first environmental control pipeline is connected to the first gas line nozzle. The static pressure sensor is provided with a second gas line nozzle, and the second environmental control pipeline is connected to the second gas line nozzle.

[0038] In a preferred embodiment of the present application, the first environmental control pipeline and the second environmental control pipeline are both wrapped with a heat insulation layer to ensure the high temperature of the airflow inside the pipeline.

[0039] In a preferred embodiment of the present application, the atmospheric data computer receives a first pressure signal from a total pressure sensor through a total pressure pipeline, converts the first pressure signal into a first current signal, and controls the opening or closing of a first electrically controlled one-way valve according to the first current signal. The atmospheric data computer receives a second pressure signal from a static pressure sensor through a static pressure pipeline, converts the second pressure signal into a second current signal, and controls the opening or closing of a second electrically controlled one-way valve according to the second current signal. The atmospheric data computer can detect the heating state of the total pressure sensor and the static pressure sensor according to the current signals of the total pressure sensor and the static pressure sensor, and when it is determined that the heating state is invalid, sends a valve opening instruction to the corresponding electrically controlled one-way valve.

[0040] Advantageously, in this embodiment, the ADC is also used to control the opening or closing of the first electrically controlled one-way valve according to received pilot instructions, and is used to control the opening or closing of the second electrically controlled one-way valve according to received pilot instructions.

[0041] The system for heating the total and static pressure sensors of the present application detects the heating status of the total pressure sensor and the static pressure sensor through an atmospheric data computer, and when the heating status is invalid, sends a valve opening command to the electronically controlled one-way valve. The electronically controlled one-way valve can receive the valve opening / closing command sent by the atmospheric data computer, and output the high-temperature, high-pressure airflow from the onboard air source system to the total and static pressure sensors through the environmental control pipeline as needed. The environmental control pipeline is used to transmit the high-temperature, high-pressure airflow from the onboard air source system, and its exterior is wrapped with a heat-insulating layer to ensure the high temperature of the airflow inside the pipeline. The total and static pressure sensors are separately provided with air path take-over nozzles, and receive the high-temperature, high-pressure airflow from the onboard air source system through the air path take-over nozzles.

[0042] Based on the above-mentioned system for heating the total and static pressure sensors, the second aspect of the present application provides a method for heating the total and static pressure sensors, which specifically includes:

[0043] When the air data computer detects that the heating of the total pressure sensor and / or the static pressure sensor fails: a valve opening command is sent to the electric control check valve;

[0044] After the valve of the electric control check valve is opened, the high-temperature and high-pressure airflow output by the onboard air source system is transmitted to the total pressure sensor and / or static pressure sensor with heating failure through the environmental control pipeline;

[0045] The ice accumulated on the surface of the total pressure sensor and / or the static pressure sensor is blown away or melted by the high-temperature and high-pressure airflow, so that the sensor can work normally.

[0046] In a preferred embodiment of the present application, the atmospheric data computer determines whether the heating state is normal by detecting the current signal of the total pressure sensor and / or the static pressure sensor. The atmospheric data computer sends a valve opening instruction to the electric-controlled one-way valve through an electrical signal.

[0047] The method for heating the total and static pressure sensors of the present application can output accurate total and static pressure information to the atmospheric data computer for solving atmospheric data parameters when the heating function of the total and static pressure sensors on the aircraft is normal. When the heating wire of the total and static pressure sensors on the aircraft breaks and causes the failure of its heating function, the atmospheric data computer detects that its heating current is abnormal and can accurately obtain its heating status. At this time, the atmospheric data computer sends a valve opening instruction to the one-way electric control valve. After receiving the opening instruction, the one-way electric control valve controls the mechanical valve inside it to rotate and open the valve, allowing the high-temperature and high-pressure airflow from the on-board air source system to flow through the environmental control pipeline to the total and static pressure sensors. The high-temperature and high-pressure airflow can blow away the ice accumulated on the total pressure port of the total pressure sensor or the static pressure hole of the static pressure sensor, and use the high temperature to provide a heating function for the total and static pressure sensors.

[0048] The method for heating the total and static pressure sensors of the present application can effectively ensure the accuracy of the total and static pressure information output by separately providing a gas line nozzle for the total and static pressure sensors to receive the high-temperature and high-pressure airflow from the onboard air source system, without sharing the gas line nozzle connected to the atmospheric data computer.

[0049] Preferably, when the pilot determines that the atmospheric data parameters calculated by the atmospheric data computer corresponding to the faulty total and static pressure sensors on board have returned to normal, a valve closing instruction can be sent to the electronically controlled one-way valve through the atmospheric data computer, and the aircraft can be operated to return as soon as possible.

[0050] The system and method for heating the total and static pressure sensors of the present application are simple and reliable to implement, with low workload for onboard modification. When the heating function of the total and static pressure sensors on board fails, backup heating measures can be provided, thereby improving system safety and ensuring flight missions and flight safety.

[0051] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A system for heating a total and static pressure sensor, characterized in that: include: A total pressure sensor, wherein the total pressure sensor is connected to an atmospheric data computer via a total pressure pipeline; A static pressure sensor connected to an air data computer via a static pressure pipeline; The environmental control pipeline comprises a first environmental control pipeline and a second environmental control pipeline, wherein one end of the first environmental control pipeline is connected to the onboard air source system and the other end is connected to the total pressure sensor, and one end of the second environmental control pipeline is connected to the onboard air source system and the other end is connected to the static pressure sensor; The electrically controlled one-way valve comprises a first electrically controlled one-way valve and a second electrically controlled one-way valve, wherein the first electrically controlled one-way valve is arranged on the first environmental control pipeline, and the second electrically controlled one-way valve is arranged on the second environmental control pipeline; An atmospheric data computer, the atmospheric data computer is used to control the opening or closing of the first electrically controlled one-way valve according to the signal received from the total pressure sensor, and is used to control the opening or closing of the second electrically controlled one-way valve according to the signal received from the static pressure sensor.

2. The system for heating the total and static pressure sensors according to claim 1, characterized in that: The total pressure sensor is provided with a first gas circuit connection nozzle, and the first environmental control pipeline is connected to the first gas circuit connection nozzle.

3. The system for heating the total and static pressure sensors according to claim 2, characterized in that: The static pressure sensor is provided with a second gas line nozzle, and the second environmental control pipeline is connected to the second gas line nozzle.

4. The system for heating the total and static pressure sensors according to claim 3, characterized in that: The first environmental control pipeline and the second environmental control pipeline are both wrapped with a heat insulation layer.

5. The system for heating the total and static pressure sensors according to claim 4, characterized in that: The air data computer receives a first pressure signal from the total pressure sensor through a total pressure pipeline, and converts the first pressure signal into a first current signal.

6. The system for heating the total and static pressure sensors according to claim 5, characterized in that: The atmospheric data computer is used to control the opening or closing of the first electrically controlled one-way valve according to the first current signal.

7. The system for heating the total and static pressure sensors according to claim 6, characterized in that: The air data computer receives a second pressure signal from the static pressure sensor through a static pressure pipeline, and converts the second pressure signal into a second current signal.

8. The system for heating the total and static pressure sensors according to claim 7, characterized in that: The air data computer is used to control the opening or closing of the second electrically controlled one-way valve according to the second current signal.

9. The system for heating the total and static pressure sensors according to claim 8, characterized in that: The air data computer is used for controlling the opening or closing of the first electrically controlled one-way valve according to the received pilot instruction.

10. The system for heating the total and static pressure sensors according to claim 9, characterized in that: The air data computer is used for controlling the opening or closing of the second electronically controlled one-way valve according to the received pilot instruction.

11. A method for heating a total and static pressure sensor, based on the system for heating a total and static pressure sensor according to any one of claims 1 to 10, characterized in that: include: When the air data computer detects that the heating of the total pressure sensor and / or the static pressure sensor fails: a valve opening command is sent to the electric control check valve; After the valve of the electric control check valve is opened, the high-temperature and high-pressure airflow output by the onboard air source system is transmitted to the total pressure sensor and / or static pressure sensor with heating failure through the environmental control pipeline; The ice accumulated on the surface of the total pressure sensor and / or the static pressure sensor is blown away or melted by the high-temperature and high-pressure airflow, so that the sensor can work normally.

12. The method for heating the total and static pressure sensors according to claim 11, characterized in that: The atmospheric data computer determines whether the heating state is normal by detecting the current signal of the total pressure sensor and / or the static pressure sensor.

13. The method for heating the total and static pressure sensors according to claim 12, characterized in that: The atmospheric data computer sends a valve opening instruction to the electric-controlled one-way valve via an electrical signal.

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