Aero-engine ECU intelligent detection system and detection method thereof

Abstract

The invention discloses an aero-engine ECU intelligent detection system and a detection method thereof. The aero-engine ECU intelligent detection system comprises an ECU control system, a touch screen control system, a manual operator control system and an upper computer measurement and control system. The touch screen control system comprises a data display module, a parameter setting module and an offline test module; the manual operator control system comprises an offline test module, an online test module and a parameter setting module; the upper computer measurement and control system comprises a signal connection module, an offline test module, a data display module, an online test module and an alarm prompt module; the on-line test module is used for the ECU control system and the engine to jointly carry out ignition up and down rotation tests; the offline test module is used for carrying out cold state test on the ECU control system; the intelligent detection system of the scheme provides a plurality of detection modes, can be suitable for detection tasks in a plurality of environments, realizes the intelligent detection of the ECU, simplifies the detection process, improves the detection efficiency, and can quickly position the fault position.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft engine intelligent monitoring, and in particular to an aircraft engine ECU intelligent detection system and a detection method thereof. Background Art

[0002] With the continuous advancement of micro-aero engine technology, its application in various fields is becoming more and more extensive, and the control system (ECU) that plays a key role is also developing towards digitalization and intelligence. Full authority digital electronic control system has gradually become the mainstream. However, the complexity and high precision requirements of ECU make its fault detection and maintenance face challenges. Traditional detection methods have problems such as low intelligence, low detection efficiency, difficulty in fault location, and inconvenient record keeping, which are difficult to meet the development needs of high-performance micro-aero engines. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides an aircraft engine ECU intelligent detection system and a detection method thereof, which solve the problems of low intelligence, low detection efficiency, difficulty in fault location, and inconvenient record keeping in the existing detection methods.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] In a first aspect, an aircraft engine ECU intelligent detection system is provided, which includes an ECU control system and a touch screen control system, a hand operator control system and a host computer measurement and control system, which are all electrically connected to the ECU control system and measure and control it; the touch screen control system includes a data display module, a parameter setting module and an offline test module; the hand operator control system includes an offline test module, an online test module and a parameter setting module; the host computer measurement and control system includes a signal connection module, an offline test module, a data display module, an online test module and an alarm prompt module; the ECU control system is used to receive and process parameter signals, and control the solenoid valve / igniter, the oil valve, the oil pump and the motor action; the online test module is used for the ECU control system and the engine to jointly perform ignition increase and decrease tests; the offline test module is used to perform cold state tests on the ECU control system; the alarm prompt module is used to adjust the alarm parameters and display warning information after fault processing.

[0006] Furthermore, the touch screen control system measures and controls the ECU control system through serial port communication, the hand operator control system measures and controls the ECU control system through wireless communication, and the host computer measurement and control system measures and controls the ECU control system through wireless communication or CAN communication.

[0007] In a second aspect, a detection method of an aircraft engine ECU intelligent detection system is provided, which comprises the following steps:

[0008] S1: Before testing the ECU control system, set the parameters of the test target;

[0009] S2: When the online detection mode is required, step S21 is executed; when the offline detection mode is required, step S22 is executed;

[0010] S21: Send the parameters to the ECU intelligent detection system and control the engine to perform ignition up and down speed tests;

[0011] S22: Send the parameters to the ECU intelligent detection system, which detects the action of each accessory and makes a fault determination based on the action of the accessory;

[0012] S3: Display and store the test results or fault determination results through the data display module;

[0013] During the entire detection process, the host computer measurement and control system also monitors the data and handles faults of the ECU control system, and displays whether the actions and data of each accessory are normal through the alarm prompt module.

[0014] Furthermore, the online test mode and the offline test mode are mutually exclusive. When one mode is performing a test, the other mode will be frozen and cannot be operated until the test is completed.

[0015] Furthermore, both the online detection mode and the offline detection mode include an automatic test mode for automatically sending setting parameters to the ECU intelligent detection system and a manual test mode for manually adjusting control parameters and sending them to the ECU intelligent detection system.

[0016] Furthermore, the method for the host computer measurement and control system to perform data detection and fault processing on the ECU control system includes:

[0017] When in the online detection mode, real-time monitoring is performed to see if a stop signal is sent to the ECU control system. If there is a stop signal, the operator controls the upper computer measurement and control system or the hand operator control system to send a stop signal and stop the vehicle immediately. If there is no stop signal, real-time monitoring is performed to see if the data of each node is normal. If an abnormal signal is generated, the upper computer immediately displays a warning message, and the operator determines whether to ignore the abnormality based on the warning message. If so, the online test is continued. If not, the operator sends a stop signal.

[0018] When in the automatic test mode of the offline detection mode, the action and data of each accessory are monitored in real time to see if they are normal; if they are normal, the action detection of each accessory is automatically completed in sequence; if they are abnormal, the host computer immediately displays a warning message;

[0019] When in the manual test mode of the offline detection mode, each accessory performs an action according to the manually input control parameters, and displays and monitors in real time whether the actions and data of each accessory are normal. If not, the host computer immediately displays a warning message.

[0020] Furthermore, the data display and storage content specifically include: speed, temperature, flow, vibration data collection and display, warning information display, accessory switch status display, data storage and data curve drawing.

[0021] Furthermore, a large database is established through the host computer measurement and control system, and previous test and calibration data are stored as benchmark comparison data for fault judgment under different test purposes.

[0022] Furthermore, when the host computer measurement and control system needs to perform multi-state control detection on a plurality of ECU control systems, the host computer measurement and control system communicates with the plurality of ECU control systems via a plurality of wireless modules in two-way wireless communication;

[0023] When the host computer measurement and control system needs to perform synchronous control detection on several ECU control systems, the host computer measurement and control system and the hand operator control system communicate unidirectionally with several ECU control systems through synchronous control wireless modules, several ECU control systems communicate unidirectionally with several wireless modules respectively, and several wireless modules communicate unidirectionally with the host computer measurement and control system.

[0024] The beneficial effects of the present invention are:

[0025] 1. The intelligent detection system of this solution provides a variety of detection modes and can be applied to detection tasks in a variety of environments. The system can realize intelligent detection of ECU, simplify the detection process, and improve the detection efficiency. It can intuitively monitor the detection data from the system interface and quickly locate the fault location.

[0026] 2. In the wireless transmission mode, this solution can increase the number of controlled ECU control systems in the original system, and can realize simultaneous control and detection of multiple ECU control systems, greatly improving the detection efficiency of the ECU control system; at the same time, it can be selected manually or automatically, and has a wider applicability.

[0027] 3. The touch screen control system of this solution can adopt a separate control system and a universal control protocol. Through parameter adjustment, the detection system of this solution can match the ECU of various engine models, which greatly increases the utilization rate of the detection system, greatly reduces the detection cost of the engine control system, and improves the detection efficiency.

[0028] 4. With the continuous accumulation of experimental and test data, the data samples of the benchmark big database of this detection system will continue to increase, and fault detection will become faster and more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of the intelligent detection system of this scheme.

[0030] Figure 2 This is the detection flow chart of the intelligent detection system of this solution.

[0031] Figure 3 This is the flow chart of data detection and fault handling of the intelligent detection system in this solution.

[0032] Figure 4 This is a schematic diagram of the structure of multi-machine joint control of the intelligent detection system of this scheme. DETAILED DESCRIPTION

[0033] The specific implementation modes of the present invention are described below to facilitate those skilled in the art to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0034] like Figures 1 to 4 As shown, the aircraft engine ECU intelligent detection system of this scheme includes a touch screen control system, a hand operator control system and a host computer measurement and control system, all of which can control and detect the ECU control system through communication; among them, the touch screen control system measures and controls the ECU system through serial port communication, which mainly includes a data display module, a parameter setting module and an offline test module; the hand operator control system measures and controls the ECU system through LoRa wireless communication, which mainly includes an offline test module, an online test module and a parameter setting module; the host computer measurement and control system mainly measures and controls the ECU system through LoRa wireless communication or CAN communication, which mainly includes a signal connection module, an offline test module, a data display module, an online test module and an alarm prompt module; the ECU control system is used to receive and process parameter signals, and control the solenoid valve / igniter, oil valve, oil pump and motor action; the online test module is used for the ECU control system and the engine to jointly perform ignition increase and decrease tests; the offline test module is used to perform cold state tests on the ECU control system; the alarm prompt module is used to adjust the alarm parameters and display warning information after fault processing.

[0035] The intelligent detection system of this solution includes host computer control detection, hand operator control detection, and touch screen control detection; the host computer measurement and control system communicates with the ECU control system using wireless or CAN communication protocol. LoRa wireless communication can be used in various complex environments, while CAN bus communication protocol transmission is more stable and fast, and the communication form can be selected according to actual needs; the host computer control system includes host computer control functions and host computer detection parameter setting functions, among which the host computer measurement and control system control can be performed in online detection mode and offline detection mode; the ECU control system can also be controlled by a wireless hand operator, and the hand operator control can be performed in online detection mode and offline detection mode; the touch screen, as an important auxiliary detection tool, can also control the ECU control system and set the control parameters. The touch screen can only be used for offline testing. When performing online ignition testing, the touch function of the touch screen will be automatically blocked and cannot be operated, but the speed, temperature and other parameters can be displayed in real time.

[0036] The present invention also provides a detection method for an aircraft engine ECU intelligent detection system, which comprises the following steps:

[0037] S1: Before testing the ECU control system, set the parameters of the test target;

[0038] S2: When the online detection mode is required, step S21 is executed; when the offline detection mode is required, step S22 is executed;

[0039] S21: Send the parameters to the ECU intelligent detection system and control the engine to perform ignition up and down speed tests;

[0040] S22: Send the parameters to the ECU intelligent detection system, which detects the action of each accessory and makes a fault determination based on the action of the accessory;

[0041] S3: Display and store the test results or fault judgment results through the data display module; the data display and storage specifically include: speed, temperature, flow, vibration data collection and display, warning information display, accessory switch status display, data storage and data curve drawing;

[0042] During the entire detection process, the host computer measurement and control system also monitors the data and handles faults of the ECU control system, and displays whether the actions and data of each accessory are normal through the alarm prompt module.

[0043] Before testing the ECU, it is necessary to design the test target parameters, such as the limits of signal tests such as temperature, speed, and vibration. When the set value is reached, the system will generate an alarm and display the alarm information in the host computer measurement and control system, and these parameters can be modified and set in the alarm prompt module of the host computer detection system; at the same time, a large database is established through the host computer measurement and control system, and previous test and calibration data are stored as benchmark comparison data for fault judgment under different test purposes; finally, the host computer detection system can also set automatic control parameters during the detection process.

[0044] After starting the ECU control system detection task, the three detection methods of host computer control detection, hand operator control detection, and touch screen control detection can all send detection commands to the detection system, and the system will execute the corresponding detection tasks according to the order in which the commands are sent.

[0045] As an auxiliary detection and setting tool for the ECU control system, the touch screen control system adopts a separate MCU control system. The communication protocol is a universal communication protocol, which can match different engine ECU control systems. It can be used to perform a series of offline tests on the ECU control system and accessory systems, and can also set parameters during ignition and high-speed control. Multiple control and parameter setting modules are set in the touch screen detection system, with corresponding icons and buttons for parameter setting and offline control of the ECU control system, and the collected data of the ECU control system can be displayed in real time.

[0046] The intelligent detection system of this scheme can select the detection mode through the corresponding control module of the upper computer measurement and control system or the hand operator control system, which mainly includes online detection mode and offline detection mode, and both detection modes include an automatic test mode that automatically sends the setting parameters to the ECU intelligent detection system and a manual test mode that manually adjusts the control parameters and sends them to the ECU intelligent detection system; multiple control switches and parameter setting modules are designed on the upper computer measurement and control system and the hand operator control system, and the corresponding control modules can be operated to perform automatic and manual tests on the ECU control system.

[0047] When the intelligent detection system receives a command through the corresponding communication mode, it will enter the corresponding detection mode. The online detection mode and the offline detection mode are mutually exclusive in the system. When one of the modes is in progress, the other mode will be frozen and cannot be operated. Only after the current mode task is completed, the operational permissions of the frozen mode will be restored. This can prevent detection confusion caused by misoperation during the test process.

[0048] The online detection mode is for the ECU control system and the engine to jointly perform ignition and up-speed tests, including automatic test mode and manual test mode. In the automatic test mode, the ECU control system will automatically perform operations such as ignition, up-speed, down-speed and parking according to the parameters set before the test (the default values ​​are used if the settings are not changed). There is no need for manual operation in the intermediate process. The ECU control system will automatically complete the entire detection process according to the detection system commands and parameters. When there is an emergency fault, the system will automatically control the oil cut-off and parking. Other abnormal information will be displayed on the upper computer measurement and control system. The operator can decide whether to stop the car independently; in the manual test mode, the ECU control system will perform ignition and high-speed operation control tests in different states according to the commands issued by the operator to operate the detection system. The specific test state is determined by the operator's manual control of the test system. The system will also automatically determine and display the test results.

[0049] The offline test mode is to perform a cold test on the ECU control system without igniting the engine, including automatic test mode and manual test mode. The automatic test mode automatically sends the setting parameters to control the actions of each accessory. The host computer detection system automatically determines whether it is normal by detecting parameters such as speed and flow, and displays the judgment result in real time. The manual test mode is for the operator to manually send the control parameters to detect whether the ECU controls each accessory normally. The solenoid valve and igniter are switch actions, and the host computer measurement and control system will have a switch status display. The oil pump is determined by flow data, and the motor is determined by speed data, and the judgment result is displayed in real time.

[0050] The methods for the host computer measurement and control system to perform data detection and fault processing on the ECU control system include:

[0051] When in the online detection mode, it monitors in real time whether there is a stop signal sent to the ECU control system. If there is a stop signal, the operator controls the upper computer measurement and control system or the hand operator control system to send a stop signal and stop the vehicle immediately; if there is no stop signal, it monitors in real time whether the data of each node is normal; if an abnormal signal is generated, the upper computer immediately displays a warning message, and the operator determines whether to ignore the abnormality based on the warning message. If so, the online test continues, if not, the operator sends a stop signal.

[0052] When in the automatic test mode of the offline detection mode, the action and data of each accessory are monitored in real time to see if they are normal; if they are normal, the system automatically sends control commands in sequence to complete the action detection of each accessory; if they are abnormal, the host computer immediately displays a warning message; when in the manual test mode of the offline detection mode, each accessory performs actions according to the manually input control parameters, and displays and monitors in real time whether the action and data of each accessory are normal; if they are abnormal, the host computer immediately displays a warning message.

[0053] In the LoRa wireless transmission mode, multiple ECU control systems and engines are controlled and tested simultaneously through the one-to-many broadcast transmission mode of the host computer measurement and control system or the handheld operator control system, realizing parallel control and testing of multiple ECUs.

[0054] When the host computer measurement and control system needs to perform multi-state control detection on several ECU control systems, the host computer measurement and control system communicates with several ECU control systems in two-way wireless communication through several wireless modules respectively; when the host computer measurement and control system needs to perform synchronous control detection on several ECU control systems, the host computer measurement and control system and the hand operator control system communicate with several ECU control systems in one-way wireless communication through the synchronous control wireless module, several ECU control systems communicate with several wireless modules in one-way wireless communication respectively, and several wireless modules communicate with the host computer measurement and control system in one-way.

[0055] In response to the needs of multi-engine synchronization and multi-state control detection, wireless control can be used, and the control mode (synchronous or multi-state control) can be selected. Under this control mode, each engine is equipped with a separate ECU control system and accessory system, and the control signal reception adopts wireless transmission mode. The upper computer measurement and control system needs to be equipped with an equal number of wireless modules as the engine. At the same time, the upper computer measurement and control system is also equipped with a separate wireless module for synchronous control. The specific control mode needs to be selected on the upper computer measurement and control system. The two control modes are mutually exclusive. When one of the control modes is selected during operation, the system will automatically freeze the other control mode until the detection task is completed before the mode can be selected again.

[0056] In the parallel control and detection of multiple ECUs, the synchronous control mode signal transmission is a unidirectional cycle. The control signals of the upper computer measurement and control system and the handheld operator control system are sent out from a synchronous control wireless module in the form of broadcasting. Multiple parallel ECU control systems receive signals through their own wireless modules, and transmit feedback data to the upper computer measurement and control system through multiple upper computer wireless modules with corresponding addresses one by one. The multi-send multi-state control signal transmission is bidirectional. The upper computer measurement and control system controls multiple ECU control systems through wireless modules with corresponding addresses one by one. At the same time, the ECU control system feedback data is returned to the upper computer measurement and control system through the corresponding wireless modules.

[0057] In summary, the intelligent detection system of this solution provides a variety of detection modes, which can be applied to detection tasks in various environments. The system can realize intelligent detection of ECU, simplify the detection process, and improve the detection efficiency. It can intuitively monitor the detection data from the system interface and quickly locate the fault location. In the wireless transmission mode, this solution can increase the number of controlled ECU control systems in the original system, and can realize simultaneous control and detection of multiple ECU control systems, which greatly improves the detection efficiency of the ECU control system. At the same time, it can be selected manually or automatically, and has a wider applicability. The touch screen control system of this solution can adopt a separate control system and a universal control protocol. Through parameter adjustment, the detection system of this solution can match ECUs of various engine models, which greatly increases the utilization rate of the detection system, greatly reduces the detection cost of the engine control system, and improves the detection efficiency. With the continuous accumulation of experimental and test data, the data samples of the benchmark big database of this detection system will continue to increase, and fault detection will become faster and more accurate.

Claims

1. An aircraft engine ECU intelligent detection system, characterized in that: It includes an ECU control system and a touch screen control system, a hand operator control system and a host computer control system which are all electrically connected to the ECU control system and measure and control it; The touch screen control system includes a data display module, a parameter setting module and an offline test module; the hand operator control system includes an offline test module, an online test module and a parameter setting module; the host computer measurement and control system includes a signal connection module, an offline test module, a data display module, an online test module and an alarm prompt module; The ECU control system is used to receive and process parameter signals, and control the action of the solenoid valve / igniter, oil valve, oil pump and motor; the online test module is used for the ECU control system to jointly perform ignition up and down speed tests with the engine; the offline test module is used to perform cold tests on the ECU control system; the alarm prompt module is used to adjust alarm parameters and display warning information after fault processing.

2. The aircraft engine ECU intelligent detection system according to claim 1 is characterized in that: The touch screen control system measures and controls the ECU control system through serial port communication, the hand operator control system measures and controls the ECU control system through wireless communication, and the host computer measurement and control system measures and controls the ECU control system through wireless communication or CAN communication.

3. A detection method using the aircraft engine ECU intelligent detection system according to any one of claims 1-2, characterized in that: The following steps are involved: S1: Before testing the ECU control system, set the parameters of the test target; S2: When the online detection mode is required, step S21 is executed; when the offline detection mode is required, step S22 is executed; S21: Send the parameters to the ECU intelligent detection system and control the engine to perform ignition up and down speed tests; S22: Send the parameters to the ECU intelligent detection system, which detects the actions of each accessory and makes a fault determination based on the action of the accessory; S3: Display and store the test results or fault determination results through the data display module; During the entire detection process, the host computer measurement and control system also monitors the data and handles faults of the ECU control system, and displays whether the actions and data of each accessory are normal through the alarm prompt module.

4. The detection method of the aircraft engine ECU intelligent detection system according to claim 3 is characterized in that: The online test mode and the offline test mode are mutually exclusive. When one mode is testing, the other mode will be frozen and cannot be operated until the test is completed.

5. The detection method of the aircraft engine ECU intelligent detection system according to claim 3 is characterized in that: Both the online detection mode and the offline detection mode include an automatic test mode for automatically sending setting parameters to the ECU intelligent detection system and a manual test mode for manually adjusting control parameters and sending them to the ECU intelligent detection system.

6. The detection method of the aircraft engine ECU intelligent detection system according to claim 3 is characterized in that: The methods for the host computer measurement and control system to perform data detection and fault processing on the ECU control system include: When in the online detection mode, real-time monitoring is performed to see if a stop signal is sent to the ECU control system. If there is a stop signal, the operator controls the upper computer measurement and control system or the hand operator control system to send a stop signal and stop the vehicle immediately. If there is no stop signal, real-time monitoring is performed to see if the data of each node is normal. If an abnormal signal is generated, the upper computer immediately displays a warning message, and the operator determines whether to ignore the abnormality based on the warning message. If so, the online test is continued. If not, the operator sends a stop signal. When in the automatic test mode of the offline detection mode, the action and data of each accessory are monitored in real time to see if they are normal; if they are normal, the action detection of each accessory is automatically completed in sequence; if they are abnormal, the host computer immediately displays a warning message; When in the manual test mode of the offline detection mode, each accessory performs an action according to the manually input control parameters, and displays and monitors in real time whether the actions and data of each accessory are normal. If not, the host computer immediately displays a warning message.

7. The detection method of the aircraft engine ECU intelligent detection system according to claim 3 is characterized in that: The data display and storage contents specifically include: speed, temperature, flow, vibration data collection and display, warning information display, accessory switch status display, data storage and data curve drawing.

8. The detection method of the aircraft engine ECU intelligent detection system according to claim 3 is characterized in that: A large database is established through the host computer measurement and control system, and previous test and calibration data are stored as benchmark comparison data for fault judgment under different test purposes.

9. The detection method of the aircraft engine ECU intelligent detection system according to claim 3 is characterized in that: When the host computer measurement and control system needs to perform multi-state control detection on several ECU control systems, the host computer measurement and control system communicates with several ECU control systems in two-way wireless communication through several wireless modules respectively; when the host computer measurement and control system needs to perform synchronous control detection on several ECU control systems, the host computer measurement and control system and the hand operator control system communicate with several ECU control systems in one-way wireless communication through the synchronous control wireless module, several ECU control systems communicate with several wireless modules in one-way wireless communication respectively, and several wireless modules communicate with the host computer measurement and control system in one-way.

Images