Cabin environment control system test platform

Abstract

The invention discloses a cabin environment control system test platform which can be used for realizing functions and dynamic performance test verification of a cabin environment control system, and the specific functions comprise sensor interface test; testing software and hardware function logic of the test product; bus transmission function testing and the like. The test platform is composed of a test board and a test resource cabinet. Wherein the test board consists of an industrial personal computer and a display screen, and is mainly used for human-computer interaction of model construction and system testing; the test resource cabinet is composed of a power box, a real-time simulation machine, a signal conditioning box, an interface box and an environmental control real object panel, and is used for carrying out analogue simulation and signal conditioning on characteristic signals of a test product. And application function test of a test product, bus transmission function test, sensor interface correctness test, sensor precision test and the like are realized.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft function testing and detection, and in particular relates to a cockpit environment control system testing platform. Background Art

[0002] The cabin environment control system is mainly used to adjust the aircraft cabin pressure, temperature and other environmental parameters to provide a suitable environment for the personnel and electronic equipment in the aircraft cabin and ensure their normal operation.

[0003] With the continuous development of the aviation industry, cabin crews have increasingly higher requirements for environmental comfort. This is especially true for large aircraft, which require rapid cabin pressure adjustments to put the aircraft into combat mode during flight missions. Furthermore, with the advancement of information technology, ultra-large integrated circuits (VLSIs) are increasingly being used in electronic equipment, significantly increasing their thermal load and thermal sensitivity. Therefore, to create a superior cabin environment and enable electronic equipment to operate continuously, stably, and efficiently, it is necessary to precisely control various cabin environmental parameters so that they can dynamically adapt to the aircraft's different operating conditions.

[0004] How to correctly evaluate and verify the control functions and control accuracy of the cockpit control system is a key issue in the system design and development stage.

[0005] Currently, the testing and verification of cockpit environmental control systems are mostly based on functional logic verification, and lack dynamic performance verification. There is an urgent need to provide a cockpit environmental control system test platform. Summary of the Invention

[0006] The present invention aims to overcome the above problems and provide a cabin environment control system test platform to realize the function and dynamic performance test of the cabin environment control system.

[0007] The present invention provides a cockpit environment control system test platform, comprising: a test bench, a left test resource cabinet and a right test resource cabinet;

[0008] The test bench consists of an industrial computer and two display screens. The industrial computer includes test software and a database. The left test resource cabinet includes a power supply box, a real-time simulator, a signal conditioning box, and an interface box. The right test resource cabinet includes a real-time simulator, a signal conditioning box, and an interface box.

[0009] The power supply box provides operating current for the entire test platform. The industrial computer serves as the main server, communicating with the two real-time simulators at high speed via Ethernet. The test software is used to configure the parameters of the cabin environment control system test items. After the parameters are configured, they are transmitted to the real-time simulators via Ethernet.

[0010] The real-time simulator outputs the excitation signals required for each test item to the cabin environment control system under test based on the configuration parameters, and transmits them to the sensor simulation board in the signal conditioning box. The temperature acquisition module uses a PT100 sensor. The common end of the PT100 sensor is connected to the real-time simulator via a wire, and the compensation end is connected to the corresponding voltage detection positive electrode and ground terminal interfaces in the interface box via two wires.

[0011] The sensor simulation board will feed back the feedback data generated by the excitation signal to the interface box and send it to the cockpit environment control system under test; the real-time simulator will also collect various control signals output by the cockpit environment control system under test based on the excitation signal and feedback data. These collected control signals are transmitted to the industrial computer database for storage via Ethernet. At the same time, the test software will analyze the collected signals to determine whether the output status of the cockpit environment control system is correct. The dynamic parameters and status are displayed on the feedback display, and the feedback is fed back to the real-time simulator for further solution, thus realizing dynamic closed-loop testing.

[0012] Said, real-time simulation machine downloads the simulation model from the database via Ethernet;

[0013] The simulation model in the real-time simulator verifies the configuration parameters and calculates the cabin pressure and cabin temperature based on the configuration parameters as excitation signals, which are sent to the cabin environment control system.

[0014] The display screen is also used to display the test software running interface.

[0015] The simulation model includes a valve model;

[0016] The simulation model contains attribute information about the data value range.

[0017] The test software is also used to, when the user clicks the "Dynamic Data Configuration" button, pop up a dynamic data setting interface, receive the linear or nonlinear output settings made by the user in the interface, and obtain a curve chart of dynamic parameter display to display the set dynamic parameters. Double-click the corresponding value to pop up a floating waveform display;

[0018] The test software is also used to provide ICD editing management, expand all signal data streams, display and record the operating steps, data parameters, and graphic curves during the test and simulation process, and generate test reports.

[0019] As described above, the power box provides the cabin environment control system with working power and power monitoring, and provides a manual switch for power on / off.

[0020] The real-time simulator is further configured to output the excitation signal required by the internal board module of the signal conditioning box according to the configuration parameters output by the test software; the internal board module provides a simulation signal according to the excitation signal and sends it to the interface box;

[0021] Internal board modules include: bus board, discrete quantity board, analog quantity board, and resistor board;

[0022] The bus board connects the discrete quantity board, analog quantity board, and resistance board, and is also used to collect discrete quantity, current, and pulse signals output by the cabin environment control system.

[0023] The signal conditioning box is also used to amplify and isolate the signals simulated by the board card, and convert the signals generated by the board card into a signal type that can be directly used by the cabin environment control system.

[0024] The interface box is used to connect the cabin environment control system and the test platform. The input / output signals of the cabin environment control system are first led to the interface box. When the real-time simulator outputs a signal that needs to be conditioned, the signal conditioning box performs signal conditioning. The conditioned signals are then classified and transferred to the cabin environment control system by the interface box.

[0025] The directly usable signals output by the real-time simulator are directly transferred to the cockpit environment control system through the interface box without passing through the signal conditioning box.

[0026] The right test resource cabinet further includes: an environmental control panel;

[0027] The environmental control panel is equipped with a failure indicator light and real-life operation buttons, which include: function setting knob;

[0028] The failure indicator light is used to indicate whether the cabin environment control system has failed;

[0029] The function setting knob is used to control the altitude and pressure alarm function modules in the cabin environment control system to different working states.

[0030] The present invention provides a cabin environment control system test platform, which has the following advantages:

[0031] 1) High accuracy, enabling dynamic performance verification. The test equipment's PT100 sensor utilizes a three-wire connection, with the current and voltage measurement circuits referenced as a single line. This effectively eliminates measurement errors caused by the long distance between the temperature measurement site and the computer, long wires connecting the sensor and the signal conditioning terminal, large voltage drops, and high accuracy errors. By configuring dynamic data in the cabin environment control system test software, a dynamic parameter display graph is generated, displaying the set dynamic parameters. Double-clicking the corresponding value pops up a floating waveform display, allowing for more intuitive real-time data monitoring.

[0032] 2) Good compatibility. With the current update of various military aircraft models, the demand for airborne product testing has also increased. The platform is equipped with universal test resources and test interfaces, which can independently build test cases and conduct subsystem development and verification tests, signal acquisition and monitoring, and LRU-level design principle test verification.

[0033] 3) High-speed Ethernet serves as the primary framework for the entire platform. The cockpit environment control system test platform is a typical multi-module testing, simulation, and monitoring system, organically connecting the individual modules using Ethernet. This approach offers strong logic, clear hierarchy, a clear structure, strong scalability, and excellent openness. It effectively addresses both real-time data requirements in networked test systems and the transmission of non-real-time information and large data streams.

[0034] 4) Good human-computer interaction. The cockpit environment control system test platform is equipped with an environmental control panel that can quickly realize system control and working status indication during testing, greatly improving the system's operability, conforming to popular operating habits, and reducing training and training costs.

[0035] 5) High configurability. It provides ICD editing and management, and can realize screen expansion display through DVI video distributor according to the characteristics of all signal data streams. It can also display and record important operation steps, data parameters, graphic curves, etc. during the test and simulation process, and generate test reports. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Cabin environment control system test platform system connection diagram;

[0037] Figure 2 Internal cross-link diagram of the cockpit environment control system test platform;

[0038] Figure 3 PT100 sensor wiring diagram;

[0039] Figure 4 Schematic diagram of the physical simulation panel of environmental control;

[0040] Figure 5 Main flow chart of the cockpit environment control system test software;

[0041] Figure 6 Diagram of the data configuration interface of the cockpit environment control system test software;

[0042] Figure 7 Dynamic data waveform display interface of the cabin environment control system test platform. DETAILED DESCRIPTION

[0043] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0044] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method proposed below, but rather encompasses any improvements, replacements, and modifications to structures, methods, and devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessary ambiguity in the present invention.

[0045] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" are based on the directions or positional relationships described in the accompanying drawings and are intended only to facilitate and simplify the description of the present invention and should not be construed as limiting the present invention. Furthermore, the use of ordinal numbers (e.g., "first and second," etc.) is intended to distinguish between objects and is not limited to this order, and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may refer to direct connection or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention.

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] The present invention will be described in further detail below with reference to the embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0049] See attached Figure 2 The present application discloses a cockpit environment control system test platform comprising a test bench and two test resource cabinets. The test bench comprises an industrial computer and two display screens. The left test resource cabinet includes a power supply box, a real-time simulator, a signal conditioning box, and an interface box. The right test resource cabinet includes a physical environment control simulation panel, a real-time simulator, a signal conditioning box, and an interface box. This test platform simulates the aircraft cockpit environment and transmits computed and received data back to the cockpit environment control system via a bus, transferring data from sensor simulation devices to achieve closed-loop system integration testing.

[0050] The industrial computer is responsible for controlling the test process of the system and controlling other units.

[0051] The display screen is responsible for displaying the test software running interface and status monitoring parameters.

[0052] The power supply box is responsible for controlling the current input to provide the system with working current.

[0053] The real-time simulator is responsible for simulating the required excitation and load signals.

[0054] The signal conditioning box is responsible for amplifying and isolating the signal simulated by the board card, and converting the signal generated by the board card into a signal type that can be directly used by the cabin environment control system.

[0055] The environmental control panel is responsible for visually displaying the operation and alarm of the cabin environment control system during the test.

[0056] Cabin environment control system test platform system connection see Figure 1The power supply box provides operating current for the entire test platform. The industrial computer serves as the main server, communicating with two real-time simulators via high-speed Ethernet. The test software is used to configure the cockpit environmental control system test item parameters. Once configured, the parameters are transmitted to the real-time simulator via Ethernet. The real-time simulator outputs the excitation signals required for each test item to the cockpit environmental control system under test based on the configured parameters and transmits them to the sensor simulation board in the signal conditioning box. The temperature acquisition module uses a PT100 sensor. The PT100 sensor's common terminal is connected to the real-time simulator via a single wire, and the compensation terminal is connected to the corresponding voltage detection positive and ground terminals in the interface box via two wires. The sensor simulation board generates feedback data based on the excitation signal and sends it to the interface box and sends it to the cockpit environmental control system under test. The real-time simulator simultaneously collects the various control signals output by the cockpit environmental control system under test based on the excitation signal and feedback data. These collected control signals are transmitted to the industrial computer database via Ethernet for storage. The test software analyzes the collected signals to determine whether the cockpit environmental control system output status is correct. One channel of the feedback is sent to the display for dynamic parameter and status display, and another channel is sent to the real-time simulator for further analysis, thus achieving dynamic closed-loop testing.

[0057] As described above, the real-time simulator downloads the simulation model from the database via Ethernet; the simulation model in the real-time simulator verifies the configuration parameters and calculates the cabin pressure and cabin temperature based on the configuration parameters as excitation signals, which are sent to the cabin environment control system; the display screen is also used to display the test software running interface. The main flow chart of the cabin environment control system test software is shown in Figure 5 .

[0058] The simulation model includes a valve model; the simulation model includes data value range attribute information.

[0059] The test software is also used to pop up the dynamic data setting interface when the user clicks the "Dynamic Data Configuration" button, receive the linear or nonlinear output settings made by the user in the interface, and obtain a curve chart of the dynamic parameter display to display the set dynamic parameters. Double-click the corresponding value to pop up the floating waveform display. See the dynamic data waveform display interface of the cabin environment control system test platform for details. Figure 7 The test software is also used to provide ICD editing management, expand all signal data streams, display and record the operation steps and data parameters and graphic curves during the test and simulation process, and generate test reports. Figure 6 .

[0060] As described above, the power box provides the cabin environment control system with working power and power monitoring, and provides a manual switch for power on / off.

[0061] The real-time simulation machine is also used to output the excitation signal required by the internal board module of the signal conditioning box according to the configuration parameters output by the test software; the internal board module provides a simulation signal according to the excitation signal and sends it to the interface box; the internal board module includes: a bus board, a discrete board, an analog board, and a resistor board; the bus board connects the discrete board, the analog board, and the resistor board, and is also used to respectively collect the discrete quantity, current, and pulse signals output by the cabin environment control system.

[0062] As mentioned above, the signal conditioning box is also used to amplify and isolate the signals simulated by the board card, and convert the signals generated by the board card into signal types that can be directly used by the cabin environment control system. In each test resource cabinet, the temperature acquisition module in the signal conditioning box uses a three-wire wiring method to connect the PT100 sensor and the real-time simulator, that is, a red wire at the common end of the PT100 sensor is connected to the real-time simulator, and the two white wires at the compensation end are respectively connected to the corresponding voltage detection positive pole and the grounding end interface in the interface box, and the two white wires at the compensation end are the same length and material. The advantage of this connection is that since there are two wires at the compensation end, that is, when the voltage is detected, one of the wires has almost no current passing through it, so its resistance will not produce a voltage drop, which can eliminate the influence of the compensation end wire resistance, thereby improving accuracy. At the same time, it improves system compatibility so that different models of test products can use this test platform for testing. See the PT100 sensor wiring diagram Figure 3 .

[0063] As described above, the function of the interface box is to connect the cockpit environment control system and the test platform. The input / output signals of the cockpit environment control system are first led to the interface box. When the real-time simulator outputs a signal that needs to be conditioned, the signal conditioning box performs signal conditioning. The conditioned signal is then classified and transferred to the cockpit environment control system by the interface box. The directly usable signals output by the real-time simulator are directly classified and transferred to the cockpit environment control system through the interface box without passing through the signal conditioning box.

[0064] The right test resource cabinet also includes: an environmental control panel; the environmental control panel is provided with a failure indicator light and a simulated physical operation button, the simulated physical operation button includes: a function setting knob; the failure indicator light is used to indicate whether the function of the cabin environment control system is disabled; the function setting knob is used to control the altitude and pressure alarm function modules in the cabin environment control system to different working states. Figure 4 .

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cockpit environment control system test platform, characterized in that: include: test bench, left test resource cabinet, and right test resource cabinet; The test bench consists of an industrial computer and two display screens. The industrial computer includes test software and a database. The left test resource cabinet includes a power supply box, a real-time simulator, a signal conditioning box, and an interface box. The right test resource cabinet includes a real-time simulator, a signal conditioning box, and an interface box. The power supply box provides operating current for the entire test platform. The industrial computer serves as the main server, communicating with the two real-time simulators at high speed via Ethernet. The test software is used to configure the parameters of the cabin environment control system test items. After the parameters are configured, they are transmitted to the real-time simulators via Ethernet. The real-time simulator outputs the excitation signals required for each test item to the cabin environment control system under test based on the configuration parameters, and transmits them to the sensor simulation board in the signal conditioning box. The temperature acquisition module uses a PT100 sensor. The common end of the PT100 sensor is connected to the real-time simulator via a wire, and the compensation end is connected to the corresponding voltage detection positive electrode and ground terminal interfaces in the interface box via two wires. The sensor simulation board will feed back the feedback data generated by the excitation signal to the interface box and send it to the cockpit environment control system under test; the real-time simulator will also collect various control signals output by the cockpit environment control system under test based on the excitation signal and feedback data. These collected control signals are transmitted to the industrial computer database for storage via Ethernet. At the same time, the test software will analyze the collected signals to determine whether the output status of the cockpit environment control system is correct. The dynamic parameters and status are displayed on the feedback display, and the feedback is fed back to the real-time simulator for further solution, thus realizing dynamic closed-loop testing.

2. The cabin environment control system test platform according to claim 1, characterized in that: The real-time simulation machine downloads the simulation model from the database via Ethernet; The simulation model in the real-time simulator verifies the configuration parameters and calculates the cabin pressure and cabin temperature based on the configuration parameters as excitation signals, which are sent to the cabin environment control system. The display screen is also used to display the test software running interface.

3. The cabin environment control system test platform according to claim 2, characterized in that: The simulation model includes a valve model; The simulation model contains attribute information about the data value range.

4. The cabin environment control system test platform according to claim 1, characterized in that: The test software is also used to pop up the dynamic data setting interface when the user clicks the "Dynamic Data Configuration" button, receive the linear or nonlinear output settings made by the user in the interface, and obtain a curve chart showing the set dynamic parameters. Double-clicking the corresponding value pops up the floating waveform display; The test software is also used to provide ICD editing management, expand all signal data streams, display and record the operating steps, data parameters, and graphic curves during the test and simulation process, and generate test reports.

5. The cabin environment control system test platform according to claim 1, characterized in that: The power box provides operating power and power monitoring to the cabin environment control system, and provides a manual power on / off switch.

6. The cabin environment control system test platform according to claim 1, characterized in that: The real-time simulator is also used to output the excitation signal required by the board module inside the signal conditioning box according to the configuration parameters output by the test software; The internal board module provides a simulation signal according to the stimulus signal and sends it to the interface box; Internal board modules include: bus board, discrete quantity board, analog quantity board, and resistor board; The bus board connects the discrete quantity board, analog quantity board, and resistance board, and is also used to collect discrete quantity, current, and pulse signals output by the cabin environment control system.

7. The cabin environment control system test platform according to claim 6, characterized in that: The signal conditioning box is also used to amplify and isolate the signals simulated by the board card, and convert the signals generated by the board card into signal types that can be directly used by the cockpit environment control system.

8. The cabin environment control system test platform according to claim 1, characterized in that: The interface box connects the cockpit environment control system and the test platform. The input / output signals of the cockpit environment control system are first led to the interface box. When the real-time simulator outputs signals that need to be conditioned, the signal conditioning box performs signal conditioning. The conditioned signals are then classified and transferred to the cockpit environment control system by the interface box. The directly usable signals output by the real-time simulator are directly classified and transferred to the cockpit environment control system through the interface box without passing through the signal conditioning box.

9. The cabin environment control system test platform according to claim 1, characterized in that: The right test resource cabinet also includes: an environmental control panel; The environmental control panel is equipped with a failure indicator light and real-life operation buttons, which include: function setting knob; The failure indicator light is used to indicate whether the cabin environment control system has failed; The function setting knob is used to control the altitude and pressure alarm function modules in the cabin environment control system to different working states.

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