Multi-channel pneumatic heating test system and method

Abstract

The invention provides a multi-channel pneumatic heating test system and method, and relates to the field of aircraft testing. In the heating test system, a plurality of heaters and a plurality of temperature sensors are respectively connected with a controller, the heaters heat a tested area of the aircraft, the temperature sensors acquire the temperature of the tested area, and the controller can acquire the temperature from the plurality of temperature sensors in real time and determine the temperature change condition of first temperature data. According to the application, the temperatures of the plurality of tested areas of the aircraft can be synchronously tested, and the synchronous test of the plurality of tested areas of the aircraft can be realized, that is, the temperature changes of different to-be-tested areas can be obtained, and the heaters corresponding to the different to-be-tested areas can be respectively controlled, so that the execution of the temperature test of each area of the aircraft can be further realized.

Description

Technical Field

[0001] The present application relates to the field of aircraft testing, and in particular to a multi-channel aerodynamic heating testing system and method. Background Art

[0002] When an aircraft flies in the atmosphere, the high-speed gas flowing through the aircraft is strongly compressed and rubbed by the surface of the aircraft, which will produce aerodynamic heating, and the temperature of the aircraft's outer wall will rise, causing ablation of the aircraft's materials. In order to understand the aircraft's heat resistance, it is necessary to conduct a heating test on the aircraft by simulating the flight of the aircraft. Therefore, it is necessary to test the working performance of the aircraft when the outer wall temperature changes to ensure the safe and stable operation of the aircraft.

[0003] When determining the working performance of the aircraft, the temperature of the outer wall of the aircraft is adjusted mainly through aerodynamic heating test technology, and the working performance of the aircraft when the temperature of the outer wall is adjusted during flight is determined. During the working performance test process, several test points are set on the aircraft, and the temperature of each test point is tested one by one. When the temperature test is performed point by point, the temperature correlation between different points is poor when testing each test point, and it is difficult to achieve the effect of simulating the flight of the aircraft. Summary of the invention

[0004] In view of this, the present application provides an aerodynamic heating test system and method, the main purpose of which is to achieve synchronous testing of multiple tested areas of an aircraft and improve the temperature correlation between the tested areas.

[0005] To achieve the above-mentioned purpose, the first aspect of the present application discloses a multi-channel pneumatic heating test system for testing an aircraft, wherein the aircraft includes a cabin section, and the cabin section includes a plurality of test areas. The system includes:

[0006] A plurality of heaters, wherein the heaters are arranged on the outer wall area of ​​the measured area and heat the outer wall area;

[0007] A plurality of temperature sensors, wherein the plurality of temperature sensors are used to be arranged in a plurality of measured areas and detect first temperature data of the outer wall area during the process in which the heater heats the outer wall area;

[0008] The controller is connected to the heater and the temperature sensor, and is used to determine whether to adjust the working parameters of the heater according to the change of the first temperature data so that the temperature changes of the inner wall area and the outer wall area meet the preset temperature change conditions.

[0009] Optionally, the controller includes: at least one first port, the first port being connected to at least one temperature sensor;

[0010] Wherein, for the same measured area, the first ports connected to the temperature sensors arranged in the outer wall area are different.

[0011] Optionally, the controller includes: at least one first port, the first port being connected to at least one temperature sensor;

[0012] Wherein, for different measured areas, the first ports connected to the temperature sensors arranged in the outer wall areas are at least partially the same.

[0013] Optionally, for each first port, the system further includes:

[0014] A plurality of path switches connected to the first port, the path switches are also connected to the temperature sensor, and the path switches are used to connect or disconnect the temperature sensor and the first port;

[0015] In the same time period, one of the plurality of path switches is in a closed state, and the other path switches are in an open state.

[0016] Optionally, an amplifier, a voltage divider and an analog-to-digital conversion module are connected in sequence between each path switch and the controller, and the amplifier is arranged close to the path switch.

[0017] Optionally, the operating parameter includes heating power, and when determining whether to adjust the operating parameter of the heater according to the change of the first temperature data, the controller is used to:

[0018] Obtaining a temperature difference and / or a temperature difference change rate of first temperature data within a period of time;

[0019] If the temperature difference is not within the preset temperature difference range, and / or the temperature difference change rate is not within the preset temperature difference change rate range, the heating power of the heater is adjusted.

[0020] Optionally, the controller further includes:

[0021] A plurality of second ports are connected to the heater, and a digital-to-analog conversion module and a current-to-voltage conversion module are sequentially connected between the second port and the heater, and the digital-to-analog conversion module is arranged close to the second port.

[0022] A second aspect of the present application discloses a pneumatic heating test method, which is executed in a controller of a pneumatic heating test system, and the method comprises:

[0023] For each measured area, obtaining first temperature data of the outer wall area during the process of the heater heating the outer wall area;

[0024] According to the change of the first temperature data, it is determined whether to adjust the working parameters of the heater so that the temperature change of the outer wall area meets the preset temperature change condition.

[0025] Optionally, determining whether to adjust the operating parameters of the heater according to the change of the first temperature data includes:

[0026] Obtaining a temperature difference and / or a temperature difference change rate of first temperature data within a period of time;

[0027] If the temperature difference is not within the preset temperature difference range, and / or the temperature difference change rate is not within the preset temperature difference change rate range, the heating power of the heater is adjusted.

[0028] Optionally, when the controller includes at least one first port, the first port is connected to at least one temperature sensor, and for each first port, the system further includes a plurality of passage switches connected to the first port, for the target measured area, before obtaining the first temperature data of the outer wall area during the process of the heater heating the outer wall area, the method further includes:

[0029] The target passage switch corresponding to the target measured area is controlled to be closed, so that the target temperature sensor of the target measured area is connected to the target first port.

[0030] In a third aspect of the present application, an electronic device is provided, including:

[0031] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute any one of the methods disclosed in the second aspect.

[0032] In a fourth aspect of the present application, an embodiment provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method described in the second aspect is implemented.

[0033] In summary, according to the technical solution disclosed in the present application, in order to solve the technical problem that the existing heaters are difficult to meet the complex temperature requirements of the aircraft, the startup heating test system provided by the present application includes: multiple heaters, which are used to be set in the outer wall area of ​​the tested area and heat the outer wall area; multiple temperature sensors, which are used to be set in multiple tested areas and detect the first temperature data of the outer wall area during the process of the heater heating the outer wall area; a controller, the controller is connected to the heater and the temperature sensor, and the controller is used to determine whether to adjust the working parameters of the heater according to the change of the first temperature data, so that the temperature change of the outer wall area meets the preset temperature change condition. Therefore, the embodiment of the present application can realize the synchronous test of multiple tested areas of the aircraft, that is, to obtain the temperature changes of different tested areas, and to control the heaters corresponding to different tested areas separately, etc., so as to improve the control efficiency of the outer wall temperature of the test aircraft, speed up the progress of the aircraft working performance test, and at the same time, by using the heating test system of the present application, the correlation between different tested areas of the aircraft is strong during the heating test, which can better simulate the effect of aircraft flight.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0037] Figure 1 The structure diagram of the multi-channel pneumatic heating test system provided in the embodiment of the present application is shown;

[0038] Figure 2 The schematic diagram shows the connection between the controller and the temperature sensor provided in the embodiment of the present application. Figure 1 ;

[0039] Figure 3 The schematic diagram shows the connection between the controller and the temperature sensor provided in the embodiment of the present application. Figure 2 ;

[0040] Figure 4 The schematic diagram shows the connection between the controller and the temperature sensor provided in the embodiment of the present application. Figure 3 ;

[0041] Figure 5 The overall structure diagram of the multi-channel pneumatic heating test system provided in the embodiment of the present application is shown;

[0042] Figure 6 A functional schematic diagram between the controller and the host computer provided in an embodiment of the present application is shown;

[0043] Figure 7 A flow chart of a multi-channel pneumatic heating test method provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0044] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0045] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0046] This embodiment provides a multi-channel pneumatic heating test system for testing an aircraft, wherein the aircraft includes a cabin section, and the cabin section includes multiple test areas, such as Figure 1 As shown, it is a structural diagram of the system of this embodiment, which may specifically include multiple heaters, multiple temperature sensors and a controller.

[0047] The heater 11 is used to be arranged in the outer wall area of ​​the measured area and heat the outer wall area.

[0048] During the flight of the aircraft, the outer wall of the aircraft will heat up due to friction with the air. The heater heats the outer wall area of ​​the aircraft to simulate the phenomenon of the outer wall rising when the aircraft is flying. However, due to the shape of the aircraft, in the real flight scene, the temperature of the outer wall area at various positions of the aircraft is different. Therefore, when the heater performs temperature simulation, the heating temperature of different areas of the outer wall of the aircraft is different. When there are many heaters, the heating temperature of each heater needs to be adjusted separately.

[0049] The plurality of temperature sensors 12 are used to be arranged in the plurality of measured areas, and detect the first temperature data of the outer wall area when the heater heats the outer wall area.

[0050] The aircraft cabin is equipped with electronic equipment. Due to the working conditions of the electronic equipment, it is necessary to ensure that the temperature in the cabin is lower than the working temperature of the electronic equipment. Therefore, the temperature of the outer wall area of ​​the aircraft is higher than the temperature of the inner wall area. In order to test the thermal insulation performance of the aircraft, it is necessary to control the heating temperature of the outer wall area by the heater 11. In the process of heating the aircraft by the heater, in order to timely monitor the temperature changes of the inner and outer walls of the aircraft, it is necessary to set up multiple sensors to timely obtain the temperature of the measured area of ​​the flight. In a possible embodiment, the temperature sensor can be a thermocouple. There are 8 types of thermocouples, including J type, S type, T type, K type, R type, B type, N type, and E type. The temperature sensor in this system can use a K-type thermocouple.

[0051] The measured area is the area of ​​the outer wall irradiated by the heater. When the temperature sensor measures the temperature of the outer wall area of ​​the measured area, the temperature sensor can be fixed at the center of the heating range of the heater. The deviation value between the heater and the preset measured point in the measured area can be less than a preset distance value, and the preset distance value can be any distance value between 10cm and 20cm, so that the temperature value obtained by the temperature sensor can more accurately determine the temperature of the outer wall area of ​​the aircraft.

[0052] When the temperature sensor measures the temperature of the inner wall area of ​​the measured area, it can correspond to the temperature sensor of the outer wall area.

[0053] The controller 13 is used to connect with the heater and the temperature sensor, and the controller is used to determine whether to adjust the working parameters of the heater according to the change of the first temperature data, so that the temperature change of the outer wall area meets the preset temperature change condition. Among them, the preset temperature change condition can be a preset temperature curve, and the controller can control the heater so that the change of the first temperature data obtained by the temperature sensor meets the preset temperature curve. In some embodiments, the controller can be a single-chip microcomputer, and the single-chip microcomputer determines whether to adjust the working parameters of the heater according to the change of the first temperature data with a preset execution logic. Alternatively, the controller can be a single-chip microcomputer and a host computer connected to each other, the single-chip microcomputer obtains the first temperature data, and uploads the first temperature data to the host computer, the host computer determines whether to adjust the working parameters of the heater according to the change of the first temperature data with a pre-stored algorithm, and sends a control instruction to the single-chip microcomputer when determining to adjust the working parameters of the heater, and the single-chip microcomputer executes the adjustment of the working parameters of the heater according to the control instruction.

[0054] After obtaining the temperature value detected by the temperature sensor, the controller can determine whether the current first temperature data of the aircraft meets the test requirements. If it is determined that the first temperature data does not meet the test requirements, the controller can promptly determine to adjust the heating temperature of the heater based on the first temperature data of the outer wall area. In the process of simulating the flight of the aircraft, the flight attitude of the aircraft can be further simulated. After the flight attitude changes, the temperature of the outer wall area of ​​the aircraft changes. The aerodynamic heating system can simulate the temperature change process. In order to simulate the change of the first temperature data of the aircraft, the controller can adjust the working parameters of the heater to change the heating temperature of the heater. In one embodiment, the controller adjusts the heating temperature of the heater, and can calculate the temperature difference and the temperature difference change rate through a fuzzy PID (Proportional, Integral, Derivative) control algorithm, thereby achieving adjustment of the heater.

[0055] The controller adjusts the heating parameters of the heater so that after the adjusted heater heats the measured area, the change in the first temperature data can meet the preset temperature change conditions. Therefore, the embodiment of the present application can realize the synchronous testing of multiple measured areas of the aircraft, that is, obtaining the temperature changes of different measured areas, and separately controlling the heaters corresponding to different measured areas, etc., thereby improving the test efficiency of the working performance of the aircraft when the outer wall temperature rises. At the same time, by using the heating test system of the present application, the correlation between different measured areas of the aircraft is strong during the heating test, which can better simulate the effect of aircraft flight.

[0056] In some embodiments, the measured area of ​​the aircraft cabin section where the heater is installed may be in the inner wall area, and the temperature sensor may be installed in the outer wall area of ​​the cabin section.

[0057] A plurality of temperature sensors are arranged at different positions of the outer wall area, and a plurality of heaters are arranged at different positions of the inner wall area. The controller is respectively connected to the plurality of heaters and the plurality of temperature sensors. The controller can control the plurality of heaters to heat different areas of the cabin respectively, and obtain the second temperature data of the plurality of sensors. By recording the change of the second temperature data under the heating action of the heater, the thermal insulation performance of the aircraft cabin material when heating is performed inside the aircraft cabin can be determined. On the basis of realizing synchronous control of the heater, synchronous testing of the plurality of tested areas of the aircraft can be performed to simulate the actual flight environment of the aircraft, and improve the test efficiency of the aircraft working performance when the temperature of the outer wall area of ​​the aircraft rises.

[0058] In some embodiments, at least one air rudder may be provided at one end of the aircraft. The air rudder adjusts its angle according to the flight angle of the aircraft. During the rotation of the air rudder, the two sides of the air rudder serve as the windward side and the leeward side of the aircraft during flight, respectively, and there is a temperature difference between the two sides of the air rudder. During the simulation test of the aircraft, the multi-channel pneumatic heating test system in this embodiment can also realize the heating simulation test of the air rudder.

[0059] A plurality of heaters are respectively arranged on the two sides of the air rudder, and the two sides are heated respectively. Since the temperature of the windward side is higher than the temperature of the leeward side during the actual flight process, therefore, during the simulation test, the temperature of one side of the air rudder is higher than the temperature of the other side, and the side with the higher temperature is used to simulate the windward side of the air rudder, and the side with the lower temperature is used to simulate the leeward side of the air rudder. The two sides of the air rudder are heated by the plurality of heaters to simulate and test the material properties of the aircraft during the actual flight process. In the process of heating the air rudder, a plurality of temperature sensors are arranged to test the third temperature data of different positions of the air rudder respectively. The controller is respectively connected to the plurality of temperature sensors and the plurality of heaters, and determines whether to adjust the working parameters of the heater according to the change of the first temperature data.

[0060] In a possible embodiment, the controller includes: at least one first port, the first port being connected to at least one temperature sensor; wherein, for the same measured area, the temperature sensors arranged in the outer wall area are connected to different first ports.

[0061] In this embodiment, the controller may be a control chip, and the control chip includes a plurality of ports (I / O, input / output). In order to enable the controller to quickly obtain the temperature from the temperature sensor, the controller may be connected to the temperature sensor through the port. In order to obtain the temperature from each temperature sensor while reducing the number of chips, the first port of the controller may be connected to at least one temperature sensor, and the first port represents each port that receives the temperature from the temperature sensor. Among them, the temperature of multiple outer wall areas needs to be measured simultaneously in the same measured area. In order to ensure the simultaneity of the temperature of the outer wall areas, this embodiment proposes to obtain the temperature of the outer wall area corresponding to the same measured area with different ports, so that the controller can obtain the first temperature data at the same time, and can further perform temperature change analysis based on the simultaneous temperature, thereby improving the reliability of the obtained temperature results.

[0062] In a possible embodiment, the controller includes: at least one first port, the first port is connected to at least one temperature sensor; wherein, for different measured areas, the first ports connected to the temperature sensors arranged in each outer wall area are at least partially the same.

[0063] In this embodiment, the controller needs to obtain the temperature from temperature sensors of multiple measured areas. In this case, in order to save controller resources, at least one temperature sensor measuring the outer wall area is connected to the same port, so that the controller can obtain the temperature from multiple temperature sensors with one port, thereby improving the port multiplexing rate of the controller and saving the information resources of the controller. For example, Figure 2 As shown, Figure 2 The control chip 21 is included. The control chip has ports 211 and 212. The port 211 is connected to a plurality of temperature sensors 22 for measuring the first outer wall area, and the port 212 is connected to a plurality of temperature sensors 23 for measuring the second outer wall area.

[0064] In some embodiments, each first port is connected to multiple path switches of the first port, and the path switches are also connected to the temperature sensor, and the path switches are used to connect or disconnect the temperature sensor and the first port; wherein, in the same time period, one of the multiple path switches is in a closed state, and the other path switches are in an open state.

[0065] Since each port of the controller is connected to multiple temperature sensors, and when the controller simultaneously obtains the temperatures of all corresponding temperature sensors through each port, it is easy to cause abnormal temperatures obtained by the controller. Therefore, in this embodiment, the controller can obtain the temperature sequentially through each port. The first port and the temperature sensor are connected through pathways, and the number of pathways corresponds one to one. At the same time, a pathway switch is provided on each pathway, and the controller can control the closing or starting and stopping of each pathway switch. When the pathway switch is closed, the temperature sensor corresponding to the pathway switch is connected to the first port, and the controller can obtain the temperature from the temperature sensor. When the pathway switch is disconnected, the controller cannot obtain the temperature from the temperature sensor. For example, Figure 3 As shown, Figure 3 The controller 31 includes a first port 311 and temperature sensors 32 respectively connected to the first port 311. Each temperature sensor 32 is respectively connected to the first port 311 through a path. A path switch 33 is provided in each path. The controller 31 can be connected to the path switch 33 through the port 312 to control the opening and closing of the path switch 33, so that the controller 31 can obtain the data of the temperature sensor in the path where the path switch is closed, and obtain the temperature from the temperature sensor. Therefore, the controller can achieve the technical effect of orderly obtaining the temperature from a single temperature sensor by opening or closing the path switch to ensure the numerical reliability of the obtained temperature.

[0066] In a possible embodiment, an amplifier, a voltage divider, and an analog-to-digital conversion module are sequentially connected between each path switch and the controller, and the amplifier is disposed close to the path switch. Figure 4 As shown, Figure 4 The first port 411 of the controller 41 is connected to the temperature sensor 46 through a path, and the first port in the path is sequentially connected to the analog-to-digital conversion module 42, the voltage divider 43, the amplifier 44, the path switch 45 and the temperature sensor 46. After the temperature sensor collects a first analog signal representing the temperature of the measured area, the amplifier amplifies the first analog signal to generate a second analog signal, and the voltage divider divides the second analog signal to generate a third analog signal, which is converted into a digital signal recognizable by the controller through the analog-to-digital conversion module.

[0067] In some embodiments, the analog-to-digital conversion module can also be connected to multiple temperature sensors at the same time to simultaneously obtain the first temperature data from the multiple temperature sensors. In this case, the analog-to-digital conversion module can transmit the converted first temperature data to the controller in real time through a voltage divider and an amplifier.

[0068] In a possible embodiment, the operating parameter includes heating power. When determining whether to adjust the operating parameter of the heater according to the change of the first temperature data, the controller is used to:

[0069] The temperature difference and / or the temperature difference change rate of the first temperature data within a period of time is obtained; if the temperature difference is not within a preset temperature difference range, and / or the temperature difference change rate is not within a preset temperature difference change rate range, the heating power of the heater is adjusted.

[0070] This embodiment further illustrates the adjustment process of the heater. During the test of the aircraft, when the temperature of the aircraft meets the required temperature of the test, the temperature difference between the inner wall temperature and the outer wall temperature of the aircraft meets the preset temperature difference range, and / or the temperature change rate meets the preset temperature difference change rate. The controller obtains the first temperature data in real time through the temperature sensor, and calculates the temperature difference and / or the temperature difference change rate of the first temperature data. If the temperature difference is not within the preset temperature difference range, and / or the temperature difference change rate is not within the preset temperature difference change rate range, it is determined that when the current heater irradiates the aircraft, its heating effect on the aircraft does not meet the temperature requirement, and it is necessary to further adjust the working parameters of the heater.

[0071] The technical solution of this embodiment serves as the starting basis for the controller to start adjusting the working parameters of the heater. The controller can adjust the heating power of the heater based on the difference between the temperature difference and the preset temperature difference range, and / or the difference between the temperature difference change rate and the preset temperature difference change rate range, based on the fuzzy PID algorithm. Exemplarily, the temperature sensor can be a thermocouple. The thermocouple temperature sensor collects the current temperature of the product under test. The millivolt analog signal output by the thermocouple sensor is amplified, cold-end temperature compensated, linearized and digitized in the thermocouple amplifier, and converted by the analog-to-digital converter through the voltage divider module. The single-chip microcomputer collects the output signal of the analog-to-digital converter in a query manner, and then the single-chip microcomputer processes the data and transmits the data to the host computer. The host computer compares the current temperature value with the set temperature value, analyzes and processes the data according to the fuzzy PID control algorithm, and outputs the signal processed by the algorithm to the high-power DC power supply as the output. The high-power DC power supply generates corresponding power to the quartz lamp heater according to the corresponding output current value, thereby realizing temperature control of the product under test.

[0072] In a possible embodiment, the controller further includes:

[0073] A plurality of second ports are connected to the heater, and a digital-to-analog conversion module and a current-to-voltage conversion module are sequentially connected between the second port and the heater, and the digital-to-analog conversion module is arranged close to the second port.

[0074] In this embodiment, the controller is further provided with a second port, the second port is connected to the heater, and the controller outputs instructions to the heater through the second port to adjust the working parameters of the heater. The second port of the controller is connected to at least one heater, and the controller can control multiple heaters through one second port. The second port of the controller can be the same port as the first port, or different ports.

[0075] A digital-to-analog conversion module and a current-to-voltage conversion module may be provided between the second port and the heater. When the controller outputs an instruction for adjusting the operating parameters of the heater through the second port, the output signal is a digital signal, the digital-to-analog conversion module converts the digital signal into a fourth analog signal, and converts the fourth analog signal represented in the form of voltage into a fourth analog signal represented in the form of current, and the fourth analog signal in the form of current adjusts the operating parameters of the heater.

[0076] In a possible embodiment, the controller is also connected to a host computer, which can obtain data from the controller and display it. The host computer can also control the controller and modify parameters or codes in the controller.

[0077] Exemplarily, the pneumatic heating test system as a whole can be as follows Figure 5 As shown, Figure 5The controller 51 includes ports 5101-5111, wherein port 5105 is used as the first port, the analog-to-digital conversion module group 52 includes analog-to-digital conversion modules 521-522, the voltage divider group 53 includes voltage dividers 531-535, the amplifier group 54 includes amplifiers 541-545, the path switch group 55 includes path switches 551-552, and the temperature sensor group 56 includes temperature sensors 561-563. The temperature sensor is set in the measured area, and the heaters 5011, 5012 and 5013 in the heater group 501 heat the corresponding measured area respectively. The controller 51 sends a control signal to the path switch in the path switch group 55 through ports 5104 and 5106 to control the opening and closing of the path switch in the path switch group 55. The ports 5108 and 5109 in the controller 51 are used as the second port. The digital-to-analog conversion module group 57 includes digital-to-analog conversion modules 571, 572 and 573. The current-to-voltage conversion module group 58 includes current-to-voltage conversion modules 581, 582 and 583. A high-power DC power supply can also be set in the current-to-voltage conversion module group 58 and the heater group 501. By adjusting the high-power DC power supply, the power of the heater group 501 can be adjusted. The controller 51 obtains the first temperature data from the temperature sensor in a time-sharing manner through the port 5105. In addition, the analog-to-digital conversion module group 52 includes an analog-to-digital conversion module 521. The controller can obtain the first temperature data from the temperature sensor in real time through the communication protocol between the analog-to-digital conversion module 521. Among them, the heating test system is also provided with a power supply module 502 for supplying power to the controller 51, the analog-to-digital conversion module group 52, the voltage divider group 53, the amplifier group 54, the path switch group 55, the digital-to-analog conversion module group 57 and the current-to-voltage conversion module group 58. The heating test system is also provided with a host computer 59 . When the host computer is provided, the controller 51 serves as a single chip microcomputer. A serial port module may be provided between the host computer 59 and the controller 51 and connected to the 5111 port of the controller 51 .

[0078] Among them, when the controller can be a single-chip microcomputer, the functional diagram between the controller and the host computer can be as follows: Figure 6 shown.

[0079] The present application provides a multi-channel pneumatic heating test method, which is applied to a pneumatic heating test system and executed in a controller of the pneumatic heating test system, such as Figure 7 As shown, including:

[0080] Step 701 : for each measured area, first temperature data of the outer wall area is obtained when the heater is heating the outer wall area.

[0081] The measured area is the area of ​​the outer wall irradiated by the heater, and the aircraft includes at least one measured area. When the temperature sensor can measure the temperature of the outer wall area of ​​the measured area, or the temperature of the inner wall area of ​​the measured area, the temperature of the outer wall area corresponds to the temperature of the inner wall area in the same measured area, so that the controller can more accurately determine the thermal insulation performance of the aircraft based on the temperature values ​​obtained by the temperature sensors of the inner and outer wall areas.

[0082] Step 702: Determine whether to adjust the operating parameters of the heater according to the change of the first temperature data so that the temperature change of the outer wall area meets the preset temperature change condition.

[0083] After acquiring the first temperature data in real time, the controller calculates the change of the first temperature data, where the temperature change of the first temperature data can be a temperature difference or a temperature difference change rate, and adjusts the heating parameters of the heater so that after the adjusted heater heats the measured area, the change of the first temperature data can meet the preset temperature change condition, where the preset temperature change condition can be expressed as a preset temperature difference range or a preset temperature difference change rate range. It is possible to achieve synchronous testing of multiple measured areas of the aircraft, that is, to obtain temperature changes of different measured areas, and to control the heaters corresponding to different measured areas separately, etc., thereby improving the test efficiency of the working performance of the aircraft when the outer wall temperature rises.

[0084] In a possible embodiment, determining whether to adjust the operating parameters of the heater according to the change of the first temperature data includes:

[0085] The temperature difference and / or the temperature difference change rate of the first temperature data within a period of time is obtained; if the temperature difference is not within a preset temperature difference range, and / or the temperature difference change rate is not within a preset temperature difference change rate range, the heating power of the heater is adjusted.

[0086] This embodiment further illustrates the adjustment process of the heater. During the test of the aircraft, when the temperature of the aircraft meets the required temperature of the test, the temperature change rate of the inner wall temperature and the outer wall temperature of the aircraft meets the preset temperature difference change rate. The controller obtains the first temperature data in real time through the temperature sensor. If the heating effect of the first temperature data on the aircraft does not meet the temperature requirement, the working parameters of the heater need to be further adjusted.

[0087] In a possible embodiment, when the controller includes at least one first port, the first port is connected to at least one temperature sensor, and for each first port, the system further includes a plurality of passage switches connected to the first port, for the target measured area, before obtaining the first temperature data of the outer wall area during the process of the heater heating the outer wall area, the method further includes:

[0088] The target passage switch corresponding to the target measured area is controlled to be closed, so that the target temperature sensor of the target measured area is connected to the target first port.

[0089] Each first port is connected to a plurality of path switches of the first port, and the path switches are also connected to the temperature sensor, and the path switches are used to realize the connection or disconnection between the temperature sensor and the first port; wherein, in the same time period, one of the plurality of path switches is in a closed state, and the other path switches are in an open state.

[0090] Since each port of the controller is connected to multiple temperature sensors, and the controller simultaneously obtains the temperatures of all corresponding temperature sensors through each port, it is easy to cause the temperature obtained by the controller to be abnormal. Therefore, in this embodiment, the controller can obtain the temperature sequentially through each port. The first port and the temperature sensor are connected through a passage, and the number of passages corresponds one to one. At the same time, a passage switch is provided on each passage, and the controller can control the closing or starting and stopping of each passage switch. When the passage switch is closed, the temperature sensor corresponding to the passage switch is connected to the first port, and the controller can obtain the temperature from the temperature sensor. When the passage switch is disconnected, the controller cannot obtain the temperature from the temperature sensor. Therefore, the controller can achieve the technical effect of orderly obtaining the temperature from a single temperature sensor by disconnecting or closing the passage switch to ensure the numerical reliability of the obtained temperature.

[0091] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0092] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0093] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0094] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0095] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0096] An embodiment of the present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process of the multi-channel pneumatic heating test method.

[0097] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

[0098] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0099] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0100] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0101] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0102] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0103] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0104] Although preferred embodiments of the present specification have been described, additional changes and modifications may be made to these embodiments by those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present specification. Obviously, those skilled in the art may make various changes and modifications to the present specification without departing from the spirit and scope of the present specification. Thus, if these modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, the present specification is also intended to include these modifications and variations.

Claims

1. A multi-channel pneumatic heating test system, characterized in that: For testing an aircraft, the aircraft includes at least one cabin section, the cabin section includes a plurality of tested areas, the system includes: A plurality of heaters, wherein the heaters are used to be arranged in the outer wall area of ​​the measured area to heat the outer wall area; A plurality of temperature sensors, wherein the plurality of temperature sensors are used to be arranged in the plurality of measured areas and detect first temperature data of the outer wall area when the heater heats the outer wall area; A controller is connected to the heater and the temperature sensor, and is used to determine whether to adjust the working parameters of the heater according to the change of the first temperature data so that the temperature change of the outer wall area meets the preset temperature change conditions.

2. The system according to claim 1, characterized in that The controller comprises: at least one first port, wherein the first port is connected to at least one of the temperature sensors; Wherein, for the same measured area, the first ports connected to the temperature sensors arranged in the outer wall area are different.

3. The system according to claim 1, characterized in that The controller comprises: at least one first port, wherein the first port is connected to at least one of the temperature sensors; Wherein, for different measured areas, the first ports connected to the temperature sensors arranged in the outer wall areas are at least partially the same.

4. The system according to claim 2 or 3, characterized in that: For each of the first ports, the system further includes: A plurality of path switches connected to the first port, the path switches are also connected to the temperature sensor, and the path switches are used to connect or disconnect the temperature sensor and the first port; Wherein, in the same time period, one of the plurality of path switches is in a closed state, and the other path switches are in an open state.

5. The system according to claim 4, characterized in that An amplifier, a voltage divider and an analog-to-digital conversion module are sequentially connected between each of the path switches and the controller, and the amplifier is arranged close to the path switch.

6. The system according to claim 1, characterized in that The operating parameter includes heating power. When determining whether to adjust the operating parameter of the heater according to the change of the first temperature data, the controller is used to: Obtaining a temperature difference and / or a temperature difference change rate of the first temperature data within a period of time; If the temperature difference is not within the preset temperature difference range, and / or the temperature difference change rate is not within the preset temperature difference change rate range, the heating power of the heater is adjusted.

7. The system according to claim 1, characterized in that The controller further comprises: A plurality of second ports, wherein the second ports are connected to the heaters, and a digital-to-analog conversion module and a current-to-voltage conversion module are sequentially connected between the second ports and the heaters, and the digital-to-analog conversion module is arranged close to the second ports.

8. A multi-channel pneumatic heating test method, characterized in that: Applied to the multi-channel pneumatic heating test system according to any one of claims 1 to 7, the method is executed in a controller of the pneumatic heating test system, and the method comprises: For each of the measured areas, obtaining first temperature data of the outer wall area during the process in which the heater heats the outer wall area; According to the change of the first temperature data, it is determined whether to adjust the working parameters of the heater so that the temperature change of the outer wall area meets the preset temperature change condition.

9. The method according to claim 8, characterized in that The determining whether to adjust the operating parameters of the heater according to the change of the first temperature data includes: Obtaining a temperature difference and / or a temperature difference change rate of the first temperature data within a period of time; If the temperature difference is not within the preset temperature difference range, and / or the temperature difference change rate is not within the preset temperature difference change rate range, the heating power of the heater is adjusted.

10. The method according to claim 8, characterized in that When the controller includes at least one first port, the first port is connected to at least one temperature sensor, and for each first port, the system further includes a plurality of path switches connected to the first port, for a target measured area, before acquiring first temperature data of the outer wall area during the process of heating the outer wall area by the heater, the method further includes: The target passage switch corresponding to the target measured area is controlled to be closed, so that the target temperature sensor of the target measured area is connected to the target first port.

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