Integrated simulation test system and method for diesel engine speed regulation system

Abstract

The invention particularly relates to an integrated simulation test system and method for a diesel engine speed regulation system, and belongs to the field of diesel engine speed regulation system testing. The system comprises a diesel engine analogue simulation module which is used for simulating and outputting the working mode of a diesel engine, responding to and entering an off-line test working mode or an on-line monitoring working mode, and providing off-line test working parameters or on-line monitoring working parameters for a diesel engine speed regulation system; and the diesel engine speed regulation system analog simulation test module is used for responding to enter an off-line test working mode or an on-line monitoring working mode and acquiring off-line test working state parameters or on-line monitoring working state parameters of the diesel engine speed regulation system in real time. According to the method, the simulation test of the diesel engine speed regulation system is carried out by using the device. The off-line test function verification of the diesel engine speed regulation system is realized, the function verification cost and risk of the diesel engine speed regulation system are reduced, the comprehensive test of the diesel engine speed regulation system is realized, and the usability and reliability of the functions of the diesel engine speed regulation system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of diesel engine speed regulation system testing, and in particular to an integrated simulation testing system and method for a diesel engine speed regulation system. Background Art

[0002] As a critical safety feature of nuclear power plants, nuclear emergency diesel engines are closely linked to nuclear power safety. In the event of an emergency, diesel engines serve as emergency power sources, ensuring the normal shutdown of reactors and protecting critical equipment from damage, playing a crucial role in ensuring nuclear power safety. Practice has proven that if a nuclear power plant malfunctions and diesel engines fail to start properly and provide high-quality electricity, the consequences can be disastrous.

[0003] As the most critical control system for diesel engines, the diesel engine speed control system controls engine starting and speed stability based on external requirements and the engine's current operating status, ensuring that the engine's power output meets external requirements. Currently, diesel engine speed control systems are functionally verified using online testing. This online testing relies on actual on-site operation of the diesel engine, resulting in high costs and risks. During online testing, a failure in the speed control system could cause damage to the engine itself, such as runaway or overload. Summary of the Invention

[0004] In order to solve the problems of high operating costs and high risks in the existing diesel engine speed control system that adopts online testing to perform functional verification, the present invention provides an integrated simulation test system and method for a diesel engine speed control system, which enables the diesel engine speed control system to perform functional verification using offline testing, thereby reducing the cost and risk of functional verification of the diesel engine speed control system, while realizing comprehensive testing of the diesel engine speed control system and improving the availability and reliability of the diesel engine speed control system function.

[0005] In order to solve the above problems, on the one hand, the present invention provides an integrated simulation test system for a diesel engine speed control system, comprising: The diesel engine simulation module is used to simulate and output the diesel engine working mode; in response to entering the offline test working mode, the diesel engine working mode based on the simulated output is used to provide the diesel engine speed control system with offline test working parameters; in response to entering the online monitoring working mode, the diesel engine working mode based on the simulated output is used to provide the diesel engine speed control system with online monitoring working parameters; The diesel engine speed control system simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the diesel engine speed control system according to the offline test working parameters in real time, and display and analyze the offline test working status parameters of the diesel engine speed control system; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the diesel engine speed control system according to the online monitoring working parameters in real time, and record and display the online monitoring working status parameters of the diesel engine speed control system; the online monitoring working status parameters of the diesel engine speed control system are the waveforms of each channel.

[0006] As one of the possible implementations, the diesel engine speed control system includes an electronic speed governor and a mechanical speed governor; the diesel engine speed control system simulation test module includes an electronic speed governor simulation test module and a mechanical speed governor simulation test module; The diesel engine simulation module is used to simulate and output the diesel engine operating mode, respond to enter the offline test working mode, and provide offline test working parameters for the electronic speed governor and mechanical speed governor based on the simulated output diesel engine operating mode; respond to enter the online monitoring working mode, and provide online monitoring working parameters for the electronic speed governor and mechanical speed governor based on the simulated output diesel engine operating mode; The electronic speed regulator simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the electronic speed regulator based on the offline test working parameters in real time, and display and analyze them; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the electronic speed regulator based on the online monitoring working parameters in real time, and record and display them; The mechanical speed regulator simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the mechanical speed regulator according to the offline test working parameters in real time, and display and analyze them; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the mechanical speed regulator according to the online monitoring working parameters in real time, and record and display them.

[0007] As one of the possible implementation methods, the diesel engine simulation module includes: A modal control unit, configured to generate an offline test signal or an online monitoring signal in a corresponding working mode based on the simulated output diesel engine working mode; the offline test signal and the online monitoring signal both include a command signal and a synchronization signal, and the command signal includes an offline test working parameter or an online monitoring working parameter; The signal output control unit is connected to the electronic speed governor and the mechanical speed governor respectively through the lower computer module, and is used to output the command signal to the corresponding diesel engine speed control system through the lower computer module, and output the synchronization signal to the lower computer module for the lower computer module to control the output of the command signal; Among them, the command signals are sent one by one according to the message queue, and the synchronization signals are sent repeatedly at equal intervals.

[0008] As one of the possible implementation methods, the diesel engine simulation module also includes: The diesel engine simulation module also includes: Mode recording unit, used to record changes in diesel engine operating modes; The mode change display unit is used to generate and display the change curve of the diesel engine's working mode in real time according to the recorded changes in the diesel engine's working mode.

[0009] As one of the possible implementations, the diesel engine operating modes simulated and output by the diesel engine simulation module include one or more of the following combinations: Start, stop, trip, close, normal start mode, emergency start mode, idle start mode, full speed start mode, reduced speed mode, constant speed mode, increase speed, decrease speed, at least one simulated speed and mechanical governor speed.

[0010] As one of the possible ways, the integrated simulation test system of the diesel engine speed control system also includes: The parameter configuration module is used to configure the acquisition variables to be collected from the electronic speed regulator and the mechanical speed regulator; the acquisition variables are configured as display variables or non-display variables.

[0011] As one of the possible ways, the electronic speed regulator simulation test module includes: A state parameter display unit, configured to generate a continuous change curve of the working state parameter of the electronic speed regulator based on changes in the working state parameter of the electronic speed regulator corresponding to the display variable; Channel waveform unit, used to record and display the waveform of each channel of the electronic speed regulator; The electronic speed regulator fault analysis unit is used to obtain the fault status of the electronic speed regulator based on the working status parameter analysis of the electronic speed regulator.

[0012] As one of the possible ways, the mechanical speed regulator simulation test module includes: An operating status acquisition and display unit is used to acquire and display the operating status of the mechanical speed regulator at different speeds, acceleration and deceleration processes; A state change acquisition and display unit is used to acquire and display changes in the output angle of the mechanical speed regulator and changes in the state of the throttle rack; A curve recording unit, used to record any one or more combinations of a speed curve, a current curve, and a rack curve of the mechanical speed regulator according to the operating state and state changes; The mechanical speed regulator fault analysis unit is used to determine whether the mechanical speed regulator is jittering or stalling based on the operating status and status changes.

[0013] As one of the possible ways, the integrated simulation test system of the diesel engine speed control system also includes: Preset test software installed in the auxiliary analysis terminal; the auxiliary analysis terminal is connected to the electronic speed regulator; The preset test software is used to read and write the setting parameters in the electronic speed regulator and record the changes in the working parameters of the electronic speed regulator.

[0014] In a second aspect, the present invention further provides an integrated simulation test method for a diesel engine speed control system, using the above-mentioned integrated simulation test system for a diesel engine speed control system, comprising the following steps: The diesel engine simulation module simulates and outputs the diesel engine working mode; The diesel engine simulation module and the diesel engine speed control system simulation test module are both responsive to entering an off-line test working mode or an on-line monitoring working mode; In the offline test working mode, the diesel engine simulation module provides offline test working parameters for the diesel engine speed control system based on the simulated output diesel engine working mode. The diesel engine speed control system simulation test module collects the working status parameters generated by the diesel engine speed control system according to the offline test working parameters in real time and displays and analyzes them; In the online monitoring working mode, the diesel engine simulation module provides online monitoring working parameters for the diesel engine speed control system based on the simulated output of the diesel engine working mode. The diesel engine speed control system simulation test module collects the waveforms of each channel generated by the diesel engine speed control system according to the online monitoring working parameters in real time and records and displays them.

[0015] Beneficial technical effects of the present invention: The integrated simulation test system and method of the diesel engine speed control system of the present invention can simultaneously test and evaluate the operating status of the electronic speed governor and mechanical speed governor of the diesel engine speed control system, realize offline monitoring and verification analysis of the diesel engine speed control system, and can comprehensively monitor the operating status of the diesel engine speed control system, reduce fault judgment and decision-making time, reduce the unplanned unavailability time of nuclear power emergency generator sets, and increase the safety and economic benefits of nuclear power plants; can significantly reduce the cost of returning mechanical speed governors and electronic speed governors for factory testing and verification, and ensure the reliability and availability of the diesel engine speed control system; can provide training and teaching for operating personnel, not only can realize the detection of the diesel engine speed control system, but also can achieve the purpose of technical training. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the principle of the host computer module in the integrated simulation test system of the diesel engine speed control system according to one embodiment of the present application.

[0017] Figure 2 Shown is a schematic diagram of the principles of a diesel engine simulation module in an integrated simulation test system of a diesel engine speed control system according to an embodiment of the present application.

[0018] Figure 3 Shown is a schematic diagram of the working principle of the host computer module in the integrated simulation test system of the diesel engine speed control system according to one embodiment of the present application.

[0019] Figure 4 Shown is a schematic diagram of the principle structure of an electronic speed governor simulation test module in an integrated simulation test system of a diesel engine speed control system according to an embodiment of the present application.

[0020] Figure 5 Shown is a schematic diagram of the principle structure of a mechanical speed governor simulation test module in an integrated simulation test system of a diesel engine speed control system according to an embodiment of the present application.

[0021] Figure 6 Shown is a schematic diagram of the working principle of an integrated simulation test system for a diesel engine speed control system in an integrated simulation test system for a diesel engine speed control system according to an embodiment of the present application.

[0022] Figure 7 Shown is a schematic diagram of the process of intelligently calibrating an electronic speed governor in an integrated simulation test system of a diesel engine speed control system according to an embodiment of the present application.

[0023] Figure 8 Shown is a schematic diagram of the process of monitoring the electronic speed governor in the integrated simulation test system of the diesel engine speed control system according to one embodiment of the present application.

[0024] Figure 9 Shown is a schematic diagram of the process of fault monitoring and analysis of an electronic speed governor in an integrated simulation test system of a diesel engine speed control system according to an embodiment of the present application.

[0025] Figure 10 Shown is a flow chart of an integrated simulation test method for a diesel engine speed control system according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0027] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0029] The technical solution of the present invention is described clearly and completely below with reference to the accompanying drawings and specific embodiments.

[0030] This embodiment provides an integrated simulation test system for a diesel engine speed control system, which is used to perform online monitoring and offline testing of the diesel engine speed control system, including: The diesel engine simulation module is used to simulate and output the diesel engine working mode; in response to entering the offline test working mode, the diesel engine working mode based on the simulated output is used to provide the diesel engine speed control system with offline test working parameters; in response to entering the online monitoring working mode, the diesel engine working mode based on the simulated output is used to provide the diesel engine speed control system with online monitoring working parameters; The diesel engine speed control system simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the diesel engine speed control system according to the offline test working parameters in real time, and display and analyze them; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the diesel engine speed control system according to the online monitoring working parameters in real time, and record and display them; the online monitoring working status parameters of the diesel engine speed control system are the waveforms of each channel.

[0031] See also Figure 1 In this embodiment, as one of the achievable methods, the diesel engine speed control system includes an electronic speed governor and a mechanical speed governor; the diesel engine speed control system simulation test module includes an electronic speed governor simulation test module and a mechanical speed governor simulation test module; The integrated simulation test system of the diesel engine speed control system is set in the upper computer module, and the upper computer module is connected to the electronic speed governor and the mechanical speed governor respectively through the lower computer module; the diesel engine simulation module is connected to the electronic speed governor and the mechanical speed governor respectively through the lower computer module, the electronic speed governor simulation test module is connected to the electronic speed governor through the lower computer module, and the mechanical speed governor simulation test module is connected to the mechanical speed governor through the lower computer module; The diesel engine simulation module is used to simulate and output the diesel engine working mode, respond to enter the offline test working mode, and provide offline test working parameters for the electronic speed governor and mechanical speed governor through the lower computer module based on the simulated output diesel engine working mode; respond to enter the online monitoring working mode, and provide online monitoring working parameters for the electronic speed governor and mechanical speed governor through the lower computer module based on the simulated output diesel engine working mode; The electronic speed regulator simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the electronic speed regulator based on the offline test working parameters through the lower computer module in real time, and display and analyze them; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the electronic speed regulator based on the online monitoring working parameters through the lower computer module in real time, and record and display them; so as to perform online monitoring and offline testing of the electronic speed regulator; The mechanical speed regulator simulation test module is used to respond to entering the offline test working mode, and collect the offline test working status parameters generated by the mechanical speed regulator according to the offline test working parameters through the lower computer module in real time and display and analyze them; respond to entering the online monitoring working mode, and collect the online monitoring working status parameters generated by the mechanical speed regulator according to the online monitoring working parameters through the lower computer module in real time and record and display them; so as to perform online monitoring and offline testing on the mechanical speed regulator.

[0032] In this embodiment, as one of the possible implementations, the lower computer module includes: The input and output unit is used to transmit the command signal issued by the diesel engine simulation module to the electronic speed governor, and transmit the control signal generated by the electronic speed governor according to the command signal to the electronic speed governor simulation test module; transmit the command signal issued by the diesel engine simulation module to the mechanical speed governor, and transmit the control signal generated by the mechanical speed governor according to the command signal to the mechanical speed governor simulation test module; The signal acquisition unit is used to collect the control signal generated by the electronic speed regulator according to the command signal in real time; and collect the control signal generated by the mechanical speed regulator according to the command signal in real time; The electronic speed regulator simulation test module is used to generate monitoring information of the electronic speed regulator based on the control signal generated by the electronic speed regulator, display and analyze the working status parameters of the electronic speed regulator, so as to perform online monitoring and offline testing of the electronic speed regulator; A mechanical speed governor simulation test module is used to generate monitoring information of the mechanical speed governor based on the control signal generated by the mechanical speed governor, and to display and analyze the working status parameters of the mechanical speed governor so as to perform online monitoring and offline testing of the mechanical speed governor; The command signal includes offline test working parameters or online monitoring working parameters; the control signal includes offline test working status parameters or online monitoring working status parameters; the working status parameters are offline test working status parameters or online monitoring working status parameters, and the online monitoring working status parameters are waveforms of each channel.

[0033] In this embodiment, as one of the feasible methods, PLC is used as the lower computer module to complete the sampling, storage unit allocation, compression and restoration functions of the electrical signals of the diesel engine speed control system. The data communication between the lower computer module and the diesel engine speed control system and the integrated simulation test system of the diesel engine speed control system is mainly based on Modbus and TCP / IP modes.

[0034] In this embodiment, as one of the possible implementations, the PLC serving as the slave module includes: an instrument and a power module with excellent performance, terminal connectors and wires with good conductivity, a main control box, and electrical components reasonably distributed in the main control box; The lower computer module is stable and well-insulated, which significantly improves the reliability and anti-interference performance of the lower computer module and ensures that the lower computer module will not be misadjusted, misaligned, malfunctioned, or refuse to operate when subjected to any on-site electrical operation, lightning strike, static electricity, or electromagnetic interference from radio transceivers.

[0035] In this embodiment, as one of the feasible methods, the host computer module includes an industrial computer, a touch screen arranged on the front of the industrial computer, multiple operation buttons and / or operation knobs arranged on the side of the touch screen for controlling the electronic speed regulator and the mechanical speed regulator for intelligent calibration, and multiple plug ports arranged on the back of the industrial computer; wherein the multiple plug ports include multiple VGA ports, USB ports, network interfaces, printer interfaces and waveform recorder interfaces.

[0036] In this embodiment, as one of the feasible ways, the host computer module uses a touch screen as a human-machine interface window, touch screen input and output control, reserves a hot-swappable mobile storage device interface, and a printer and a waveform recorder as expandable peripherals.

[0037] In this embodiment, as one possible implementation, the host computer module's industrial computer utilizes an embedded industrial controller (IPC), enabling data function integration, higher cycle computing speeds, storage, and graphic display capabilities. For example, the IPC utilizes a high-end X86 CPU based on the IPC architecture, offering low power consumption, low heat generation, and powerful computing and graphics processing capabilities. The IPC's main control unit utilizes an aluminum-magnesium alloy housing, providing fast heat dissipation, dust and shock resistance, and a durable housing.

[0038] See also Figure 3In this embodiment, as one of the possible implementations, the integrated simulation test system for the diesel engine speed control system further includes: Preset test software installed in the auxiliary analysis terminal; the auxiliary analysis terminal is connected to the electronic speed regulator; The preset test software is used to read and write the setting parameters in the electronic speed regulator and record the changes in the working parameters of the electronic speed regulator.

[0039] For example, the auxiliary analysis terminal is equipped with the LEEC tool software for electronic speed governor interface and parameter management. The LEEC tool software is the original test tool software for diesel engines. The LEEC software is installed on an IPC or laptop and connected to the electronic speed governor through the RS232 interface. It can read and write the electronic speed governor setting parameters and record the changes in the electronic speed governor's working parameters. As the original test tool software for diesel engines, the LEEC tool software can assist and verify the test results of the electronic speed governor through the integrated simulation test system of the diesel engine speed control system.

[0040] The integrated simulation test system of the diesel engine speed control system in this embodiment can simultaneously test and evaluate the operating status of the mechanical speed governor and the electronic speed governor of the diesel engine speed control system, realize offline detection and verification analysis of the diesel engine speed control system, and can comprehensively monitor the operating status of the diesel engine speed control system. It can significantly reduce the cost of returning the mechanical speed governor and the electronic speed governor to the factory for testing and verification, ensure the reliability and availability of the diesel engine speed control system, reduce the fault judgment and decision-making time of the diesel engine speed control system, reduce the unplanned unavailability time of the nuclear power emergency generator set, and increase the safety and economic benefits of the nuclear power plant.

[0041] In this embodiment, as one of the feasible methods, an operating mode protection is set for the host computer module, and data can be stored and retrieved during the test process in any mode; when the software platform of the host computer module is used normally, the installation and operation of third-party software is not allowed, and data is not allowed to be written to the OS system storage area. Only data operations can be performed on the test data storage area; the upgrade of the host computer module software or the installation of third-party APP software can only be carried out with the authorization of the operator and the OS system is switched to debugging mode. These designs prevent unexpected failures of the OS system in the host computer module, delay the life of the storage medium, and save storage space resources.

[0042] See also Figure 2 In this embodiment, as one of the possible implementations, the diesel engine simulation module includes: A modal control unit, configured to generate an offline test signal or an online monitoring signal in a corresponding working mode based on the simulated output diesel engine working mode; the offline test signal and the online monitoring signal both include a command signal and a synchronization signal, and the command signal includes an offline test working parameter or an online monitoring working parameter; The signal output control unit is connected to the electronic speed governor and the mechanical speed governor respectively through the lower computer module, and is used to output the command signal to the corresponding diesel engine speed control system through the lower computer module, and output the synchronization signal to the lower computer module for the lower computer module to control the output of the command signal; Among them, the command signals are sent one by one according to the message queue, and the synchronization signals are sent repeatedly at equal intervals.

[0043] In this embodiment, as one of the feasible ways, the diesel engine working mode simulated and output by the diesel engine simulation module includes one or more combinations of the following: start, stop, trip off the grid, close, normal start mode, emergency start mode, idle start mode, full speed start mode, speed reduction mode, constant speed control mode, speed increase, speed reduction, at least one simulated speed and mechanical speed regulator speed.

[0044] In this embodiment, as one of the possible implementations, the diesel engine simulation module can display and record the continuous changes of all parameters of the diesel engine operating mode and present them in the form of real-time curves; The diesel engine simulation module also includes: Mode recording unit, used to record changes in diesel engine operating modes; The mode change display unit is used to generate and display the change curve of the diesel engine's working mode in real time according to the recorded changes in the diesel engine's working mode.

[0045] In this embodiment, as one of the feasible ways, the electronic speed governor simulation test module provides switch quantity and analog quantity input parameter management for the electronic speed governor according to the requirements of the diesel engine simulation module, and measures all parameters and provides them to the diesel engine simulation module.

[0046] In this embodiment, as one of the possible implementations, the integrated simulation test system for the diesel engine speed control system further includes: The parameter configuration module is used to configure the acquisition variables to be collected from the electronic speed regulator and the mechanical speed regulator; wherein the acquisition variables are configured as display variables and non-display variables.

[0047] In this embodiment, as one of the feasible methods, the electronic speed regulator simulation test module can display and record the continuous changes of all working status parameters of the electronic speed regulator and express them in the form of real-time curves; and the electronic speed regulator simulation test module can have the functions of historical monitoring information data playback and combined refinement analysis. The waveform data can be analyzed on-site and can also be captured and stored to realize real-time display of joint debugging data and historical record comparison.

[0048] See also Figure 4 In this embodiment, as one of the possible implementation methods, the electronic speed regulator simulation test module includes: a state parameter display unit, a channel waveform unit and an electronic speed regulator fault analysis unit; A state parameter display unit, configured to generate a continuous change curve of the working state parameter of the electronic speed regulator based on changes in the working state parameter of the electronic speed regulator corresponding to the display variable; Channel waveform unit, used to record and display the waveform of each channel of the electronic speed regulator; The electronic speed regulator fault analysis unit is used to obtain the fault status of the electronic speed regulator based on the working status parameter analysis of the electronic speed regulator.

[0049] In this embodiment, as one of the possible implementations, the working status parameters of the electronic speed regulator include the switch quantity change value, the working current display value, the actual speed measurement value, the speed setting value, the number of speed probe failures and the number of watchdog failures, wherein the status parameter display unit can display the different electronic speed regulators ( )mA and (( ) A working current for identification.

[0050] In this embodiment, as one of the possible ways, the mechanical speed regulator simulation test module can realize the speed setting, oil pressure test, output angle test, etc. of the mechanical speed regulator. The speed of the motor can be (0 Speed ​​regulation within 2000) rpm.

[0051] In this embodiment, as one of the possible implementations, the mechanical speed regulator simulation test module can display and record the continuous changes of all parameters of the mechanical speed regulator and present them in the form of real-time curves. Figure 5 As shown, the mechanical speed governor simulation test module includes: an operating status acquisition and display unit, a state change acquisition and display unit, a curve recording unit and a mechanical speed governor fault analysis unit; An operating status acquisition and display unit is used to acquire and display the operating status of the mechanical speed regulator at different speeds, acceleration and deceleration processes; A state change acquisition and display unit is used to acquire and display changes in the output angle of the mechanical speed regulator and changes in the state of the throttle rack; a curve recording unit configured to record any one or more combinations of a speed curve, a current curve, and a rack curve of the mechanical governor 111 according to the operating state and the state change; a mechanical governor fault analysis unit configured to determine whether the mechanical governor has a hunting or a stall according to the operating state and the state change.

[0052] In the embodiment, as one of the implementable modes, the diesel engine simulation simulation module can configure the channel working parameters of the mechanical governor to be measured, including the simulated speed and the set speed, etc. The electronic governor outputs the throttle output current value to the mechanical governor. The mechanical governor adjusts the output angle of the output shaft to adjust the throttle under the combined action of the current value and the comparison of the simulated speed and the set speed. The mechanical governor simulation simulation test module records the continuous change curve of the parameters in the adjustment state.

[0053] In the embodiment, the diesel engine simulation simulation module outputs continuous change speed signals to the mechanical governor to drive the mechanical governor to operate in a specific speed range, so that the mechanical governor simulation simulation test module can not only obtain the operating state of the mechanical governor in different speeds and acceleration and deceleration processes, and whether there is a hunting or a stall phenomenon, but also obtain the change of the output angle, the state change of the throttle rack, and record the speed curve, the current curve, and the rack curve, and further measure the working state of the mechanical governor.

[0054] The embodiment of the application provides an integrated simulation test system of a diesel engine speed regulation system, which provides almost completely close simulation test of the real environment, and the error is ≤±5%. The test system simulates the voltage and current amplitude provided to the corresponding channel of the speed regulator when the diesel engine works, and the numerical error is ≤±5% compared with the given voltage and current amplitude when the diesel engine works.

[0055] Referring to Figure 6 In the embodiment, the integrated simulation test system of the diesel engine speed regulation system can perform online monitoring and offline testing on the diesel engine speed regulation system, and can also perform evaluation analysis on the online monitoring and offline testing. When the electronic governor simulation simulation test module and the mechanical governor simulation simulation test module only display the collected data without further processing and analysis of the collected data, the electronic governor and the mechanical governor can be monitored only by the diesel engine simulation simulation module.

[0056] The integrated simulation test system for the diesel engine speed control system generates monitoring information based on the received electrical signals and then displays this monitoring information in real time. By observing this monitoring information, professional technicians can analyze and determine the actual operating status of the diesel engine and, in turn, determine whether the electronic speed governor's adjustment function is abnormal. When the diesel engine speed governor monitoring function is in use, the diesel engine electronic speed governor test software is started, the LOGO interface is displayed, and the main interface is entered. The upper computer establishes communication with the lower computer signal transmission module, and the diesel engine simulation module operation interface appears. The operation interface contains various submodules of the diesel engine simulation module described above, and various operations can be performed. By obtaining operation permissions, various calibration data and preset values ​​of simulated speed and acceleration can be automatically changed according to the test mode.

[0057] In this embodiment, as one of the feasible methods, when performing offline simulation testing on the electronic speed governor, the input and output unit of the lower computer module is connected to the electronic speed governor through a cable to transmit the command signal, and then multiple probes are respectively connected to the corresponding lines of the electronic speed governor to collect control signals. Through the operation interface of the integrated simulation test system of the diesel engine speed control system, the diesel engine simulation test module sends a test instruction to the input and output unit, and the test instruction includes a command signal and a synchronization signal, and then the input and output unit transmits the command signal to the electronic speed governor.

[0058] In order to ensure the response timing of the PLC of the lower computer module, the command signals are sent one by one according to the queue organization, and the synchronization signals are repeatedly sent at equal intervals. When the PLC cannot receive the synchronization signal, all outputs are prohibited. After receiving the command signal, the electronic speed regulator will generate a control signal based on the command signal. The control signal is mainly reflected by the current. The change value of the current on the test circuit is collected by the probe and transmitted to the electronic speed regulator simulation test module through the input and output unit. The PLC will periodically organize the data and upload it in batches to the electronic speed regulator simulation test module. The electronic speed regulator simulation test module will decompress, display and store the data. The signal acquisition channel adopts the TCP / IP protocol. After the host computer module starts communication, it starts to listen for the connection request from the PLC. After the connection is established, it starts to listen for data packets. The data packets are timestamped to ensure the accurate collection time. If a network interruption occurs, the automatic recovery mechanism pre-set in the communication channel can automatically rebuild the two communication channels after the network is restored, ensuring the continuity and integrity of data collection.

[0059] In this embodiment, as one of the possible implementation methods, the electronic speed regulator simulation test module continuously records the continuous change process of all adjustment parameters of the electronic speed regulator in the online working state, and also records the possible fault state data of the electronic speed regulator; It can not only perform on-site analysis but also take snapshots, continuously and long-term record the working status parameters of all channels of the electronic speed regulator, and perform digital processing such as playback, combination, and superposition of all channel data to fully realize scene reconstruction; The electronic speed governor simulation test module stores the command signal sent by the diesel engine simulation module in real time, that is, records the operation behavior; By recording the operating behavior and the results (monitoring information) caused by the operating behavior,

[0060] In order to facilitate users to intuitively compare data waveform image information, the electronic speed regulator simulation test module has built-in data analysis tools, which can better analyze the causes of electronic speed regulator failures and quickly perform fault diagnosis and analysis on the electronic speed regulator.

[0061] In this embodiment, as one of the feasible ways, the integrated simulation test system of the diesel engine speed control system is provided with a simulation test working mode, a monitoring and measurement working mode and a fault diagnosis working mode.

[0062] See also Figure 7 ,In the simulation test working mode, the integrated simulation test system of the ,diesel engine speed control system displays a simulation test function panel for ,users to configure simulation test parameters; After the user completes the simulation test parameter configuration, the diesel engine simulation module simulates and outputs the diesel engine working mode, responds to enter the simulation test working mode, and outputs simulation test instructions to the diesel engine speed control system based on the diesel engine working mode; the diesel engine speed control system simulation test module collects the working status data generated by the diesel engine speed control system according to the simulation test instructions in real time and displays and analyzes it.

[0063] See also Figure 8 In this embodiment, as one of the feasible methods, in the monitoring and measurement working mode, the integrated simulation test system of the diesel engine speed control system continuously records the working status data of the diesel engine speed control system, such as current, voltage, speed and ECC. The simulation test operation function is disabled, and the recording action is started and stopped through the recording menu. The scrolling of the waveform recording window can also be paused.

[0064] See also Figure 9 In this embodiment, as one of the possible implementations, in the fault diagnosis working mode, the integrated simulation test system of the diesel engine speed control system analyzes various real-time working status data and historical working status data of the diesel engine speed control system; In order to facilitate users to intuitively compare data waveforms, the integrated simulation test system of the diesel engine speed control system is pre-installed with at least one analysis tool. The various real-time working status data and historical working status data of the diesel engine speed control system are recorded with characteristic values ​​such as equipment model and electric regulator number as identifiers, and the record start, end and duration information can be viewed.

[0065] In this embodiment, as one of the possible implementations, the data of the integrated simulation test system for the diesel engine speed control system in the online monitoring working mode and the offline testing working mode include the changes in the working parameters of each channel of the electronic speed governor and the changes in the measured set state parameters; The changes in the working parameters of each channel of the electronic speed regulator include the change value of the switch quantity, the working current display value, the actual speed measurement value, the speed setting value, the number of speed probe failures and the number of watchdog failures; The measured state parameter changes include RUN, STOP, on-grid and off-grid, idle, full-speed start mode and down-regulation.

[0066] See also Figure 10 This embodiment further provides an integrated simulation test method for a diesel engine speed control system, using the above-mentioned integrated simulation test system for a diesel engine speed control system, including the following steps: The diesel engine simulation module simulates and outputs the diesel engine working mode; The diesel engine simulation module and the diesel engine speed control system simulation test module are both responsive to entering an off-line test working mode or an on-line monitoring working mode; In the offline test working mode, the diesel engine simulation module provides an offline test signal for the diesel engine speed control system based on the simulated output diesel engine working mode. The diesel engine speed control system simulation test module collects the working status parameters generated by the diesel engine speed control system according to the offline test signal in real time and displays and analyzes them; In the online monitoring working mode, the diesel engine simulation module provides online monitoring signals for the diesel engine speed control system based on the simulated output of the diesel engine working mode. The diesel engine speed control system simulation test module collects the waveforms of each channel generated by the diesel engine speed control system according to the online monitoring signals in real time and records and displays them.

[0067] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An integrated simulation test system for a diesel engine speed control system, characterized in that: include: Diesel engine simulation module, used to simulate and output the diesel engine working mode; In response to entering the offline test working mode, the diesel engine operating mode based on the simulated output provides the diesel engine speed control system with offline test working parameters; in response to entering the online monitoring working mode, the diesel engine operating mode based on the simulated output provides the diesel engine speed control system with online monitoring working parameters; The diesel engine speed control system simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the diesel engine speed control system according to the offline test working parameters in real time, and display and analyze them; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the diesel engine speed control system according to the online monitoring working parameters in real time, and record and display them.

2. The integrated simulation test system for a diesel engine speed control system according to claim 1, characterized in that: The diesel engine speed control system includes an electronic speed governor and a mechanical speed governor; the diesel engine speed control system simulation test module includes an electronic speed governor simulation test module and a mechanical speed governor simulation test module; The diesel engine simulation module is used to simulate and output the diesel engine operating mode, respond to enter the offline test working mode, and provide offline test working parameters for the electronic speed governor and mechanical speed governor based on the simulated output diesel engine operating mode; respond to enter the online monitoring working mode, and provide online monitoring working parameters for the electronic speed governor and mechanical speed governor based on the simulated output diesel engine operating mode; The electronic speed regulator simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the electronic speed regulator based on the offline test working parameters in real time, and display and analyze them; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the electronic speed regulator based on the online monitoring working parameters in real time, and record and display them; The mechanical speed regulator simulation test module is used to respond to entering the offline test working mode, collect the offline test working status parameters generated by the mechanical speed regulator according to the offline test working parameters in real time, and display and analyze them; respond to entering the online monitoring working mode, collect the online monitoring working status parameters generated by the mechanical speed regulator according to the online monitoring working parameters in real time, and record and display them.

3. The integrated simulation test system for a diesel engine speed control system according to claim 1, characterized in that: The diesel engine simulation module includes: A modal control unit, configured to generate an offline test signal or an online monitoring signal in a corresponding working mode based on the simulated output diesel engine working mode; the offline test signal and the online monitoring signal both include a command signal and a synchronization signal, and the command signal includes an offline test working parameter or an online monitoring working parameter; The signal output control unit is connected to the electronic speed governor and the mechanical speed governor respectively through the lower computer module, and is used to output the command signal to the corresponding diesel engine speed control system through the lower computer module, and output the synchronization signal to the lower computer module for the lower computer module to control the output of the command signal; Among them, the command signals are sent one by one according to the message queue, and the synchronization signals are sent repeatedly at equal intervals.

4. The integrated simulation test system for a diesel engine speed control system according to claim 3, characterized in that: The diesel engine simulation module also includes: Mode recording unit, used to record changes in diesel engine operating modes; The mode change display unit is used to generate and display the change curve of the diesel engine's working mode in real time according to the recorded changes in the diesel engine's working mode.

5. The integrated simulation test system for a diesel engine speed control system according to claim 1, characterized in that: The diesel engine operating modes simulated and output by the diesel engine simulation module include one or more of the following combinations: Start, stop, trip, close, normal start mode, emergency start mode, idle start mode, full speed start mode, reduced speed mode, constant speed mode, increase speed, decrease speed, at least one simulated speed and mechanical governor speed.

6. The integrated simulation test system for a diesel engine speed control system according to claim 2, characterized in that: The integrated simulation test system for diesel engine speed control system also includes: The parameter configuration module is used to configure the acquisition variables to be collected from the electronic speed regulator and the mechanical speed regulator; the acquisition variables are configured as display variables or non-display variables.

7. The integrated simulation test system for a diesel engine speed control system according to claim 2, characterized in that: Electronic speed regulator simulation test module, including: A state parameter display unit, configured to generate a continuous change curve of the working state parameter of the electronic speed regulator based on changes in the working state parameter of the electronic speed regulator corresponding to the display variable; Channel waveform unit, used to record and display the waveform of each channel of the electronic speed regulator; The electronic speed regulator fault analysis unit is used to obtain the fault status of the electronic speed regulator based on the working status parameter analysis of the electronic speed regulator.

8. The integrated simulation test system for a diesel engine speed control system according to claim 2, characterized in that: Mechanical speed regulator simulation test module, including: An operating status acquisition and display unit is used to acquire and display the operating status of the mechanical speed regulator at different speeds, acceleration and deceleration processes; A state change acquisition and display unit is used to acquire and display changes in the output angle of the mechanical speed regulator and changes in the state of the throttle rack; A curve recording unit, used to record any one or more combinations of a speed curve, a current curve, and a rack curve of the mechanical speed regulator according to the operating state and state changes; The mechanical speed regulator fault analysis unit is used to determine whether the mechanical speed regulator is jittering or stalling based on the operating status and status changes.

9. The integrated simulation test system for a diesel engine speed control system according to claim 2, characterized in that: The integrated simulation test system for diesel engine speed control system also includes: Preset test software installed in the auxiliary analysis terminal; the auxiliary analysis terminal is connected to the electronic speed regulator; The preset test software is used to read and write the setting parameters in the electronic speed regulator and record the changes in the working parameters of the electronic speed regulator.

10. An integrated simulation test method for a diesel engine speed control system, characterized in that: The integrated simulation test system for the diesel engine speed control system according to any one of claims 1 to 9 comprises the following steps: The diesel engine simulation module simulates and outputs the diesel engine working mode; The diesel engine simulation module and the diesel engine speed control system simulation test module are both responsive to entering an off-line test working mode or an on-line monitoring working mode; In the offline test working mode, the diesel engine simulation module provides offline test working parameters for the diesel engine speed control system based on the simulated output diesel engine working mode. The diesel engine speed control system simulation test module collects the working status parameters generated by the diesel engine speed control system according to the offline test working parameters in real time and displays and analyzes them; In the online monitoring working mode, the diesel engine simulation module provides online monitoring working parameters for the diesel engine speed control system based on the simulated output of the diesel engine working mode. The diesel engine speed control system simulation test module collects the online monitoring working status parameters generated by the diesel engine speed control system according to the online monitoring working parameters in real time and records and displays them.

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