CN114740758A - Semi-physical simulation system and simulation method for microcomputer control system of diesel locomotive - Google Patents
Semi-physical simulation system and simulation method for microcomputer control system of diesel locomotive Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 76
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 59
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
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- 238000012545 processing Methods 0.000 claims description 10
- 230000001143 conditioned effect Effects 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
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- 239000000306 component Substances 0.000 description 16
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- 239000000295 fuel oil Substances 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention relates to a simulation technology of a microcomputer control system of an internal combustion locomotive, in particular to a semi-physical simulation system and a simulation method of the microcomputer control system of the internal combustion locomotive. The blank of learning EM2000 microcomputer control system equipment at present is made up. The system comprises an EM2000 microcomputer control system, an industrial personal computer and a signal conditioning system; the industrial personal computer comprises an upper computer program, three communication interfaces and four data acquisition cards; the upper computer program comprises a display and operation layer, a logic control layer and a component layer; the signal conditioning system comprises a signal conditioning board, a CAN communication box, a constant current source module, a relay switch module and a singlechip module; the signal conditioning board is used for conditioning signals; the constant current source module, the relay switch module and the single chip microcomputer module are respectively connected with the component layer. The invention can completely simulate the signal of the EM2000 microcomputer control system, realize various working conditions, analyze faults, observe the fault phenomenon of the system, and the modularized hardware is easy to maintain.
Description
Technical Field
The invention relates to a simulation technology based on a microcomputer control system of an internal combustion locomotive, in particular to a semi-physical simulation system and a simulation method of the microcomputer control system of the internal combustion locomotive.
Background
The EM2000 microcomputer control system is one of the core components of the diesel locomotive and mainly plays a role in excitation, logic and display. The control system is mostly used for internal combustion locomotives produced in China.
At present, foreign manufacturers quit the after-sale work of the EM2000 microcomputer control system and are born by domestic host manufacturers. At present, no equipment or platform for systematically learning the EM2000 microcomputer control system exists, and the application requirement of the EM2000 microcomputer control system cannot be met. The user's study of the EM2000 microcomputer control system mainly depends on the books related to the domestic existing EM2000 microcomputer control system, and the books mainly introduce each module of the EM2000 microcomputer control system, including a central processing module, a traction inverter control module, an analog-digital-analog module, a digital input/output module and a fuel control system connected with the system. The related teaching videos in China teach the operation process. However, for technicians who need to understand the theory and are familiar with the practical application, the book knowledge and the video introduction are far from sufficient, the operation principle of the locomotive needs to be understood deeply, the information interaction among all modules needs to be learned, and the book theory and the practical operation are combined to better serve the overhaul and after-sale work of the diesel locomotive EM2000 microcomputer control system.
Disclosure of Invention
The invention aims to solve the problem that no platform for systematically learning an EM2000 microcomputer control system exists in China at present. In order to complement and master the short board of EM2000 microcomputer control system, a semi-physical simulation system and a simulation method of the microcomputer control system of the diesel locomotive are provided.
The idea of the invention is to utilize the overhaul experience of the EM2000 microcomputer control system and the result of program analysis in the EM2000 microcomputer control system to build an environment for ground learning the principle of the EM2000 microcomputer control system, develop a set of semi-physical simulation system of the EM2000 microcomputer control system and greatly reduce the cost and time for loading and testing each module in the EM2000 microcomputer system.
The technical solution of the invention is as follows:
a semi-physical simulation system of a microcomputer control system of an internal combustion locomotive is characterized in that:
the system comprises an EM2000 microcomputer control system, an industrial personal computer and a signal conditioning system;
the EM2000 microcomputer control system comprises a traction inverter control module, a central processing module, a digital input/output module and an analog-digital-analog module;
the industrial personal computer comprises a touch display screen, an upper computer program, two first communication interfaces, a second communication interface and four data acquisition cards; the touch display screen is used for displaying data and an operation interface and performing touch key operation; the upper computer program comprises a display and operation layer, a logic control layer and a component layer; the display and operation layer is used for providing a data display and operation interface; the logic control layer comprises a locomotive starting logic, a locomotive traction working condition logic, a self-load test logic and control of all independent variables, and is used for receiving an operation instruction, generating a corresponding control instruction and forwarding the generated control instruction to the component layer; the independent variables comprise the running speed of the locomotive, the rotating speed of the diesel engine, the voltage of an intermediate link and lever prying actions; the first communication interface is from USB to RS 232; the second communication interface is converted from USB to RS 485;
the signal conditioning system comprises a signal conditioning board, a CAN communication box, a constant current source module, a relay switch module and a singlechip module; the signal conditioning board is used for conditioning a signal output by the industrial personal computer, transmitting the conditioned signal to the EM2000 microcomputer control system, conditioning part of signals of the EM2000 microcomputer control system and returning the conditioned signal to the industrial personal computer; the CAN communication box is respectively connected with the industrial personal computer and the EM2000 microcomputer control system through cables and is used for signal transmission between the industrial personal computer and the EM2000 microcomputer control system; the constant current source module and the single chip microcomputer module are respectively connected with the component layer through a first communication interface, wherein the constant current source module receives a control instruction sent by an upper computer and provides a continuously adjustable current signal to the analog-digital-analog module, the single chip microcomputer module receives the control instruction sent by the upper computer, simulates a locomotive speed signal and a locomotive radar signal and sends the signals to the analog-digital-analog module, and simulates a diesel engine rotating speed signal and sends the signals to the central processing module; the relay switch module is connected with the component layer through a second communication interface, receives a control instruction sent by the upper computer, and controls the opening/closing state of a corresponding channel in the digital input/output module:
the four data acquisition cards are arranged in a PCI slot of the industrial personal computer and are respectively used for frequency signal detection, voltage signal output, digital quantity signal control output and digital quantity signal detection input; the component layer is connected with corresponding components in the signal conditioning system through two first communication interfaces, a second communication interface and four data acquisition cards.
Furthermore, the signal conditioning board is respectively and electrically connected with the four data acquisition cards, the traction inverter control module, the digital input/output module and the analog-digital-analog module; the CAN communication box is respectively and electrically connected with the component layer and the central processing module.
Further, the signal conditioning board demultiplexes a multiplexed signal of an input channel in a digital input/output module in the EM2000 microcomputer control system, and the demultiplexed signal is accessed to a relay switch module in the signal conditioning system.
Further, the data display and operation interface comprises a learning interface;
the learning interface is used for displaying the states of all signals, communication process data, signal settings of all EM2000 microcomputer control systems, signal settings of EMDEC data, parameter settings corresponding to eight gears of the locomotive and adjustment of all switching value signals and analog quantity signals in the working process.
A semi-physical simulation method of a microcomputer control system of an internal combustion locomotive is based on the semi-physical simulation system and is characterized by comprising an automatic test step;
1) timing sequence for simulating starting diesel engine of locomotive
1.1) supplying power to an EM2000 microcomputer control system, simultaneously starting an industrial personal computer, starting an upper computer program, then finishing parameter configuration of each gear by operation, and clicking automatic test;
1.2) automatically setting the temperature of a diesel engine, the temperature of lubricating oil of the diesel engine, atmospheric pressure, the voltage of a storage battery, the current of a draught fan between ventilation, the current of a main draught fan, the temperature of a phase module and the water temperature by an upper computer program according to configured parameters, and then starting required signals before starting the diesel engine by the upper computer program, wherein the required signals comprise a CABSL signal, a MAB CB signal, an ENGCB signal, a FIRE CB signal, a TLP CB signal, a TLPR signal, an APC CB signal, a GNBWCB signal and a CNTLCB signal;
1.3) simulating a fuel control signal by an upper computer program, and transmitting the fuel control signal to an EM2000 microcomputer control system through a CAN communication box in a signal conditioning system;
1.4) clicking a start button on a data display and operation interface to trigger a diesel engine start program in an EM2000 microcomputer control system;
1.5) the industrial personal computer transmits gear meshing parameters, intermediate link voltage, diesel engine rotating speed, auxiliary power supply converter state, auxiliary voltage, EMDEC data and excitation signals required by a diesel engine starting program of the EM2000 microcomputer control system to the EM2000 microcomputer control system through a CAN communication box in the signal conditioning system in sequence;
2) implementing condition logic
The working condition logic comprises an idle working condition, a traction working condition, an anti-skid working condition and a test working condition;
2.1) operation to enter Inerting mode
Clicking a self-testing button on a data display and operation interface, entering a self-testing interface, clicking an idling button on the self-testing interface, entering an idling working condition interface, enabling the idling working condition interface to check corresponding process data and a signal change process, and enabling the idling working condition interface to enter a traction working condition, a test working condition and an anti-skid working condition at will;
2.2) operation into traction regime
Under the idle working condition, clicking a traction working condition button to enter a traction working condition interface, wherein the traction working condition interface can check corresponding process data and the change process of a signal;
under the traction working condition, operating a gear handle on a data display and operation interface to simulate the locomotive to accelerate and increase gears, and checking the main fixed power, the main output power, the main exciting current, the T1 torque, the T2 torque and the diesel engine axle horsepower information of the locomotive through a FIRE display screen;
under the traction working condition, clicking a traction condition quitting button, displaying process data corresponding to the traction condition quitting by a data display and operation interface, checking a signal change process, and after completely quitting the traction working condition, enabling the EM2000 microcomputer control system to enter an idle working condition;
2.3) under the idle working condition, clicking a test working condition button, entering a test working condition interface, displaying process data of the test working condition through a data display and operation interface, and checking the process of signal change;
under the test working condition, the test device can be operated on a FIRE display screen in an EM2000 microcomputer control system to carry out self-load test;
when the test condition needs to be quitted, the test condition quitting button can be clicked, the data display and operation interface displays the process data corresponding to the test condition quitting, and the signal change process can be checked;
2.4) under the idle working condition, clicking an anti-skid working condition button to enter an anti-skid working condition interface, displaying the process data of the anti-skid working condition by a data display and operation interface, checking the corresponding signal change, and simultaneously viewing the information of resistance braking on a FIRE display screen in an EM2000 microcomputer control system;
when the anti-skid working condition needs to be quitted, the button for quitting the test working condition is clicked, the data display and operation interface displays the process data when the anti-skid working condition quits, and the signal change process can be checked.
Further, the method also comprises a manual testing step, which specifically comprises the following steps:
s1) simulating the timing of starting the diesel engine of the locomotive
Supplying power to an EM2000 microcomputer control system, simultaneously starting an industrial personal computer, starting an upper computer program, then completing parameter configuration of each gear by operation, clicking a manual test, switching to a manual operation interface, and manually operating to realize the start state of the EM2000 microcomputer control system;
s2) opening corresponding switches in sequence, and after adjusting parameter values, the EM2000 microcomputer control system can start the machine to enter the idle working condition;
s3), under the idle working condition, corresponding setting is carried out according to the working condition required to enter, and learning is carried out on the interface of the corresponding working condition;
s4), clicking the initialization button on the data display and operation interface, returning to the initialization interface, displaying the initialized process data by the data display and operation interface, and checking the signal change process.
The invention has the beneficial effects that:
1. the semi-physical simulation system is designed from top to bottom, covers all signals of the EM2000 microcomputer control system, can completely simulate the signals of the EM2000 microcomputer control system, realizes traction working conditions, anti-skid working conditions and test working conditions in the EM2000 microcomputer control system, and reserves all debugging interfaces for a user to operate and learn.
2. The semi-physical simulation method has the advantages that signals in the running process of all the EM2000 microcomputer control systems are detected and controlled to form a closed-loop system, and the traction working condition that the traction gear of the EM2000 microcomputer control system is in 8 gears is achieved.
3. The semi-physical simulation system can quickly improve the understanding of the student on the functions of the EM2000 microcomputer control system, and master the principles of locomotive diesel engine starting, locomotive traction control, self-load test and the like related to the EM2000 microcomputer control system.
4. The semi-physical simulation system can provide maintenance support for a locomotive crew and a host factory, the whole simulation system can simulate the working state of an EM2000 microcomputer control system, fault analysis is carried out by a method of replacing a fault module in situ, and the cost and the period of boarding verification are reduced.
5. The semi-physical simulation system can observe the fault phenomenon of the system by adding the fault signal, record the fault occurrence process and form a fault elimination manual.
6. The semi-physical simulation method of the invention completely restores the process of locomotive traction operation and provides reference for understanding other types of microcomputer control systems.
7. In the semi-physical simulation system, the data display and operation interface of the upper computer program selects an industrial flattening style, and the control interface is easy to distinguish. And the hardware is in modular design and easy to maintain.
Drawings
FIG. 1 is a block diagram of a hardware-in-the-loop simulation system according to the present invention;
FIG. 2 is a block diagram of the semi-physical simulation system according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples.
The invention discloses a semi-physical simulation system of a microcomputer control system of an internal combustion locomotive, which comprises an EM2000 microcomputer control system, an industrial personal computer and a signal conditioning system, as shown in figures 1 and 2.
The EM2000 microcomputer control system comprises a traction inverter control module, a central processing module, a digital input/output module and an analog-digital-analog module; the EM2000 microcomputer control system is connected with each module in the signal conditioning system through four modules through cables.
The industrial personal computer comprises an upper computer program, a touch display screen, two first communication interfaces, a second communication interface and four data acquisition cards; the first communication interface is from USB to RS 232; the second communication interface is converted from USB to RS 485; the four data acquisition cards are arranged in a PCI slot of the industrial personal computer and are respectively used for frequency signal detection, voltage signal output, control digital quantity signal output and detection digital quantity signal input; the touch display screen is used for displaying data and an operation interface and performing touch key operation; the upper computer program comprises a display and operation layer, a logic control layer and a component layer. The display and operation layer is used for providing a data display and operation interface, and the upper computer program sends process data and control signals to the EM2000 microcomputer control system according to the operation of a user. The logic control layer comprises locomotive starting logic, locomotive traction working condition logic, self-load test logic and control of all independent variables, and is used for receiving an operation instruction, generating a corresponding control instruction and forwarding the generated control instruction to the component layer; in the display and operation layer, after the upper computer obtains an operation instruction of a user, the logic control layer controls interaction logic among the functional sub-modules, all control instructions operated by the user are forwarded to the component layer through the logic control layer, and control logic of a locomotive starting process, control logic of a locomotive traction working condition and logic of a self-load test are realized in the logic control layer. The logic control layer comprises locomotive starting logic, locomotive traction working condition logic, self-load test logic and control of all independent variables; the independent variables comprise signals of locomotive running speed, diesel engine rotating speed, intermediate link voltage, crowbar action and the like. The component layer provides service for the software and realizes the butt joint operation with the external signal.
The signal conditioning system comprises a signal conditioning board, a CAN communication box, a constant current source module for outputting a continuous adjustable current signal, a relay switch module for controlling a digital quantity input and output signal and a single chip microcomputer module for outputting a frequency signal; the signal conditioning board is respectively and electrically connected with the four data acquisition cards, the traction inverter control module, the digital input/output module and the analog-digital-analog module; the signal conditioning board is used for conditioning a signal output by the industrial personal computer, transmitting the conditioned signal to the EM2000 microcomputer control system, conditioning part of signals of the EM2000 microcomputer control system and returning the conditioned signal to the industrial personal computer; the CAN communication box is respectively and electrically connected with the component layer and the central processing module and is used for signal transmission between the industrial personal computer and the EM2000 microcomputer control system; the constant current source module and the single chip microcomputer module are respectively connected with the component layer through a first communication interface, wherein the constant current source module receives a control instruction sent by an upper computer and provides a continuously adjustable current signal to the analog-digital-analog module, the single chip microcomputer module receives the control instruction sent by the upper computer, simulates a locomotive speed signal and a locomotive radar signal and sends the signals to the analog-digital-analog module, and simulates a diesel engine rotating speed signal and sends the signals to the central processing module; the relay switch module is connected with the component layer through a second communication interface, receives a control instruction sent by the upper computer and controls the opening/closing state of a corresponding channel in the digital input/output module. The component layer is connected with corresponding components in the signal conditioning system through two first communication interfaces, a second communication interface and four data acquisition cards.
The signal conditioning board conditions the signal output by the industrial personal computer, and then transmits the signal to the EM2000 microcomputer control system, and simultaneously collects and conditions partial signals of the EM2000 microcomputer control system, and then transmits the signals to the industrial personal computer. After the signal conditioning board is connected with the EM2000 microcomputer control system through a cable, all signals are classified into voltage input signals, current input signals, digital quantity output signals, frequency input signals and variable resistance signals. And the data acquisition card is respectively connected to the industrial personal computer or is used for conditioning independently.
The voltage input signal is a signal input into the EM2000 microcomputer control system and is connected to a board card for outputting a voltage signal in the data acquisition card through a signal conditioning board;
the current input signal is a signal input into the EM2000 microcomputer control system and is connected to the constant current source module through the signal conditioning board;
the digital input signal is a signal input into the EM2000 microcomputer control system, one part of the digital input signal is connected to the relay switch module through the signal conditioning board, and the other part of the digital input signal is connected to the board card which is used for controlling the input of the digital signal in the data acquisition card through the signal conditioning board;
the digital output signal is a signal output by an EM2000 microcomputer control system, and the signal conditioning board uses a current-limiting resistor to limit the current of the output signal and then is connected to a board card for detecting the input of the digital signal in the data acquisition card;
the frequency input signal is a signal input into the EM2000 microcomputer control system and is divided into two paths through a signal conditioning board, one path is connected to a board card used for detecting the frequency signal in the data acquisition card, and the other path uses an inverting buffer and is wound back to the EM2000 microcomputer control system;
the variable resistance signal is connected to the potentiometer through the signal conditioning plate.
Signals that are individually conditioned include: the signal conditioning board is connected with the potentiometer through a cable and provides an adjustable resistance signal for the analog-digital-analog module; the signal conditioning board configures the address of a traction inverter control module in the EM2000 microcomputer control system in a jumper wire mode; the signal conditioning board demultiplexes the multiplexing signal of the input channel in the digital input/output module in the EM2000 microcomputer control system by arranging a diode matrix circuit, and the demultiplexed signal is accessed to a relay switch module in the signal conditioning system.
The data display and operation interface comprises a learning interface, and the learning interface comprises an automatic test interface and a manual test interface. The learning interface can be used for displaying the states of all signals in the working process, the communication process data, the signal settings of all EM2000 microcomputer control systems, the signal settings of EMDEC data, the parameter settings corresponding to eight gears of the locomotive and the adjustment of all switching value signals and analog quantity signals. The open learning interface of the system comprises all signal interfaces, EMDEC data interfaces and fault input interfaces used by an EM2000 microcomputer control system. The learning interface can make the operator visually see the working process of each signal, the state of each signal and the transmitted communication data in the operation of the EM2000 microcomputer control system. During the operation of the EM2000 microcomputer control system, each switching value signal and each analog value signal can be adjusted on a learning interface, parameters are modified through operation, and the working process of the EM2000 microcomputer control system is familiar continuously. In a learning interface, the handle gear of the EM2000 microcomputer control system is lifted to the eighth gear, so that the fault reporting of the EM2000 microcomputer control system cannot be caused, the simulation system is stabilized in the eighth gear state, and the comprehensive simulation of the main traction function of the EM2000 microcomputer control system is realized.
In addition, the learning interface may also provide fault signaling functionality. When a fault signal is input into the EM2000 microcomputer control system, the fault phenomenon can be visually observed, and fault information can be checked. The main traction function of the EM2000 microcomputer control system is comprehensively simulated. In the learning interface, the fault phenomenon of the control system of the EM2000 computer can be seen by modifying the signal state, so that the learning purpose is achieved. The learning function of the learning interface provides convenience for technical personnel to check faults, and if a fault module exists in the EM2000 microcomputer control system, a specific module can be positioned through the simulation system, and even a specific fault position can be positioned.
The invention relates to a method for realizing semi-physical simulation of a microcomputer control system of an internal combustion locomotive by utilizing the system, which comprises an automatic test step and a manual test step;
the automatic testing steps are as follows:
1) timing sequence for simulating starting diesel engine of locomotive
1.1) supplying power to an EM2000 microcomputer control system, simultaneously starting an industrial personal computer, starting an upper computer program, then finishing parameter configuration of each gear by operation, and clicking automatic test;
1.2) automatically setting the temperature of a diesel engine, the temperature of lubricating oil of the diesel engine, atmospheric pressure, the voltage of a storage battery, the current of a draught fan between ventilation, the current of a main draught fan, the temperature of a phase module and the water temperature by an upper computer program according to configured parameters, and then starting required signals before starting the diesel engine by the upper computer program, wherein the required signals comprise a CABSL signal, a MAB CB signal, an ENGCB signal, a FIRE CB signal, a TLP CB signal, a TLPR signal, an APC CB signal, a GNBWCB signal, a CNTLCB signal and the like;
1.3) simulating a fuel control signal by an upper computer program, and transmitting the fuel control signal to an EM2000 microcomputer control system through a CAN communication box in a signal conditioning system;
1.4) clicking a start button on a data display and operation interface to trigger a diesel engine start program in an EM2000 microcomputer control system;
1.5) the industrial personal computer transmits gear meshing parameters, intermediate link voltage, diesel engine rotating speed, auxiliary power supply converter state, auxiliary voltage, EMDEC data and excitation signals required by a diesel engine startup program of the EM2000 microcomputer control system to the EM2000 microcomputer control system through a CAN communication box in the signal conditioning system in sequence;
2) implementing condition logic
The working condition logic comprises an idle working condition, a traction working condition, an anti-skid working condition and a test working condition;
2.1) operation to enter Inactive mode
Clicking a self-testing button on a data display and operation interface, entering a self-testing interface, clicking an idle button on the self-testing interface, transmitting data corresponding to an idle working condition to an EM2000 microcomputer control system through a signal conditioning system by an upper computer program, entering an idle working condition interface, enabling the idle working condition interface to check corresponding process data and a change process of a signal, and enabling the idle working condition interface to optionally enter a traction working condition, a test working condition and an anti-slip working condition;
2.2) operation into traction regime
Under the idle working condition, clicking a traction working condition button, transmitting data corresponding to the traction working condition to an EM2000 microcomputer control system by an upper computer program, entering a traction working condition interface, and checking corresponding process data and the change process of a signal by the traction working condition interface;
under the traction working condition, operating a gear handle on a data display and operation interface to simulate the acceleration of the locomotive and increase the gear, and checking the main fixed power, the main output power, the main exciting current, the T1 torque, the T2 torque and the axle horsepower information of the diesel engine through a FIRE display screen;
under the traction working condition, clicking a traction working condition quitting button, transmitting data quitting the traction working condition to the EM2000 microcomputer control system by an upper computer program, displaying process data when the traction working condition quits by a data display and operation interface, displaying process data corresponding to the traction working condition quitting by the data display and operation interface, checking a signal change process, and after completely quitting the traction working condition, enabling the EM2000 microcomputer control system to enter an idle working condition;
2.3) under the idle working condition, clicking a test working condition button, transmitting the data of the test working condition to an EM2000 microcomputer control system by an upper computer program, entering a test working condition interface, displaying the process data of the test working condition by a data display and operation interface, and checking the process of signal change;
under the test working condition, the test device can be operated on a FIRE display screen in an EM2000 microcomputer control system to carry out self-loading test;
when the test condition needs to be quitted, a button for quitting the test condition is clicked, the upper computer program transmits the data of the quitting test condition to the EM2000 microcomputer control system, the data display and operation interface displays the process data corresponding to the quitting test condition, and the change process of the signal can be checked;
2.4) clicking an anti-skid working condition button under the idle working condition, transmitting the data of the anti-skid working condition to an EM2000 microcomputer control system by an upper computer program, displaying the process data of the anti-skid working condition by a data display and operation interface, entering the anti-skid working condition interface, displaying the process data of the anti-skid working condition by the data display and operation interface, checking the corresponding signal change, and simultaneously seeing the information of resistance braking on a FIRE display screen in the EM2000 microcomputer control system;
when the anti-skid working condition needs to be quitted, the button for quitting the anti-skid working condition is clicked, the upper computer program transmits the data for quitting the anti-skid working condition to the EM2000 microcomputer control system, the data display and operation interface displays the process data when the anti-skid working condition is quitted, and the change process of the signal can be checked;
the manual testing steps are specifically as follows:
according to the use requirement, any parameter on the data display and operation interface is modified, and test operation and learning operation are carried out;
s1) simulating the timing of starting the diesel engine of the locomotive
Supplying power to an EM2000 microcomputer control system, simultaneously starting an industrial personal computer, starting an upper computer program, then completing parameter configuration of each gear by operation, clicking a manual test, switching to a manual operation interface, and manually operating to realize the startup state of the EM2000 microcomputer control system;
under the manual operation interface, all signals on the data display and operation interface can be modified at the moment, and corresponding process data and a signal change process are checked; the startup state of the EM2000 microcomputer control system can be realized by manual operation without the control of a logic program of an upper computer.
An operator edits EMDEC data according to learning data, adjusts the temperature, pressure, voltage and current values required before the EM2000 microcomputer control system is started, and after the start switch is turned on, the EM2000 microcomputer control system can enter the starting process.
S2) opening corresponding switches in sequence, and after adjusting parameter values, the EM2000 microcomputer control system can start the machine to enter the idle working condition;
s3), under the idle working condition, corresponding setting is carried out according to the working condition required to enter, and learning is carried out on the interface of the corresponding working condition;
s4), clicking the initialization button on the data display and operation interface, returning to the initialization interface, displaying the initialized process data by the data display and operation interface, and checking the signal change process.
The upper computer detects the starting process data output by the EM2000 microcomputer control system in real time, and outputs various simulated signals in real time according to the gear setting condition to guarantee the operation of the microcomputer system. The signal of host computer emulation output includes: the fuel oil engine comprises a fuel oil engine rotating speed signal, an environment data signal (water temperature, oil temperature, air pressure, water pressure and the like), a voltage signal, a current signal, a state switch signal and a signal output by a fuel oil control system.
The time sequence of the locomotive starting process is simulated and controlled by software and hardware; and under the traction working condition, the antiskid working condition and the self-load working condition of the locomotive, the data information corresponding to each gear is simulated and controlled by software and hardware.
Claims (6)
1. A semi-physical simulation system of a microcomputer control system of an internal combustion locomotive is characterized in that:
the system comprises an EM2000 microcomputer control system, an industrial personal computer and a signal conditioning system;
the EM2000 microcomputer control system comprises a traction inverter control module, a central processing module, a digital input/output module and an analog-digital-analog module;
the industrial personal computer comprises a touch display screen, an upper computer program, two first communication interfaces, a second communication interface and four data acquisition cards; the touch display screen is used for displaying data and an operation interface and performing touch key operation; the upper computer program comprises a display and operation layer, a logic control layer and a component layer; the display and operation layer is used for providing a data display and operation interface; the logic control layer comprises a locomotive starting logic, a locomotive traction working condition logic, a self-loading test logic and control of all independent variables, and is used for receiving an operation instruction, generating a corresponding control instruction and forwarding the generated control instruction to the component layer; the independent variables comprise the running speed of the locomotive, the rotating speed of the diesel engine, the voltage of an intermediate link and the action of a crow bar; the first communication interface is a USB-to-RS 232 interface; the second communication interface is converted from USB to RS 485;
the signal conditioning system comprises a signal conditioning board, a CAN communication box, a constant current source module, a relay switch module and a singlechip module; the signal conditioning board is used for conditioning a signal output by the industrial personal computer, transmitting the conditioned signal to the EM2000 microcomputer control system, conditioning part of signals of the EM2000 microcomputer control system and returning the conditioned signal to the industrial personal computer; the CAN communication box is respectively connected with the industrial personal computer and the EM2000 microcomputer control system through cables and is used for signal transmission between the industrial personal computer and the EM2000 microcomputer control system; the constant current source module and the single chip microcomputer module are respectively connected with the component layer through a first communication interface, wherein the constant current source module receives a control instruction sent by an upper computer and provides a continuously adjustable current signal to the analog-digital-analog module, the single chip microcomputer module receives the control instruction sent by the upper computer, simulates a locomotive speed signal and a locomotive radar signal and sends the signals to the analog-digital-analog module, and simulates a diesel engine rotating speed signal and sends the signals to the central processing module; the relay switch module is connected with the component layer through a second communication interface, receives a control instruction sent by the upper computer, and controls the opening/closing state of a corresponding channel in the digital input/output module:
the four data acquisition cards are arranged in a PCI slot of the industrial personal computer and are respectively used for frequency signal detection, voltage signal output, digital quantity signal control output and digital quantity signal detection input; the component layer is connected with corresponding components in the signal conditioning system through two first communication interfaces, a second communication interface and four data acquisition cards.
2. The semi-physical simulation system of the microcomputer control system of the diesel locomotive according to claim 1, wherein: the signal conditioning board is respectively and electrically connected with the four data acquisition cards, the traction inverter control module, the digital input/output module and the analog-digital-analog module;
the CAN communication box is respectively and electrically connected with the component layer and the central processing module.
3. The semi-physical simulation system of the microcomputer control system of the diesel locomotive according to claim 2, characterized in that:
the signal conditioning board demultiplexes a multiplexed signal of an input channel in a digital input/output module in the EM2000 microcomputer control system, and the demultiplexed signal is accessed to a relay switch module in the signal conditioning system.
4. The semi-physical simulation system of the microcomputer control system of the diesel locomotive according to claim 3, characterized in that:
the data display and operation interface comprises a learning interface;
the learning interface is used for displaying the states of all signals, communication process data, signal settings of all EM2000 microcomputer control systems, signal settings of EMDEC data, parameter settings corresponding to eight gears of the locomotive and adjustment of all switching value signals and analog quantity signals in the working process.
5. A semi-physical simulation method of a microcomputer control system of an internal combustion locomotive is based on the semi-physical simulation system of claims 1-4, and is characterized by comprising an automatic test step;
1) timing sequence for simulating starting diesel engine of locomotive
1.1) supplying power to an EM2000 microcomputer control system, simultaneously starting an industrial personal computer, starting an upper computer program, then finishing parameter configuration of each gear by operation, and clicking automatic test;
1.2) automatically setting the temperature of a diesel engine, the temperature of lubricating oil of the diesel engine, atmospheric pressure, the voltage of a storage battery, the current of a draught fan between ventilation, the current of a main draught fan, the temperature of a phase module and the water temperature by an upper computer program according to configured parameters, and then starting required signals before starting the diesel engine by the upper computer program, wherein the required signals comprise a CABSLA signal, a MAB CB signal, an ENGCB signal, a FIRE CB signal, a TLP CB signal, a TLPR signal, an APC CB signal, a GNBWCB signal and a CNTLCB signal;
1.3) simulating a fuel control signal by an upper computer program, and transmitting the fuel control signal to an EM2000 microcomputer control system through a CAN communication box in a signal conditioning system;
1.4) clicking a start button on a data display and operation interface to trigger a diesel engine start program in an EM2000 microcomputer control system;
1.5) the industrial personal computer transmits gear meshing parameters, intermediate link voltage, diesel engine rotating speed, auxiliary power supply converter state, auxiliary voltage, EMDEC data and excitation signals required by a diesel engine startup program of the EM2000 microcomputer control system to the EM2000 microcomputer control system through a CAN communication box in the signal conditioning system in sequence;
2) implementing condition logic
The working condition logic comprises an idle working condition, a traction working condition, an anti-skid working condition and a test working condition;
2.1) operation to enter Inerting mode
Clicking a self-testing button on a data display and operation interface, entering a self-testing interface, clicking an idling button on the self-testing interface, entering an idling working condition interface, enabling the idling working condition interface to check corresponding process data and a signal change process, and enabling the idling working condition interface to enter a traction working condition, a test working condition and an antiskid working condition at will;
2.2) operation into traction regime
Under the idle working condition, clicking a traction working condition button to enter a traction working condition interface, wherein the traction working condition interface can check corresponding process data and the change process of a signal;
under the traction working condition, operating a gear handle on a data display and operation interface to simulate the acceleration of the locomotive and increase the gear, and checking the main fixed power, the main output power, the main exciting current, the T1 torque, the T2 torque and the axle horsepower information of the diesel engine through a FIRE display screen;
under the traction working condition, clicking a traction condition quitting button, displaying process data corresponding to the traction condition quitting by a data display and operation interface, checking a signal change process, and after completely quitting the traction working condition, enabling the EM2000 microcomputer control system to enter an idle working condition;
2.3) under the idle working condition, clicking a test working condition button, entering a test working condition interface, displaying process data of the test working condition through a data display and operation interface, and checking the process of signal change;
under the test working condition, the test device can be operated on a FIRE display screen in an EM2000 microcomputer control system to carry out self-loading test;
when the test condition needs to be quitted, the test condition quitting button can be clicked, the data display and operation interface displays the process data corresponding to the test condition quitting, and the signal change process can be checked;
2.4) under the condition of idle working condition, clicking an anti-skid working condition button to enter an anti-skid working condition interface, displaying the process data of the anti-skid working condition by a data display and operation interface, checking the corresponding signal change, and simultaneously, seeing the information of resistance braking on a FIRE display screen in the EM2000 microcomputer control system;
when the anti-skid working condition needs to be quitted, the button for quitting the test working condition is clicked, the data display and operation interface displays the process data when the anti-skid working condition quits, and the signal change process can be checked.
6. The semi-physical simulation method of the diesel locomotive microcomputer control system according to claim 5, characterized by further comprising a manual test step, specifically:
s1) simulating the timing of starting the diesel engine of the locomotive
Supplying power to an EM2000 microcomputer control system, simultaneously starting an industrial personal computer, starting an upper computer program, then completing parameter configuration of each gear by operation, clicking a manual test, switching to a manual operation interface, and manually operating to realize the start state of the EM2000 microcomputer control system;
s2) opening corresponding switches in sequence, and after adjusting parameter values, the EM2000 microcomputer control system can start the machine to enter the idle working condition;
s3), under the idle working condition, corresponding setting is carried out according to the working condition required to enter, and the learning is carried out by entering the corresponding working condition interface;
s4), clicking the initialization button on the data display and operation interface, returning to the initialization interface, displaying the initialized process data by the data display and operation interface, and checking the signal change process.
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| CN202210346255.8A CN114740758A (en) | 2022-03-31 | 2022-03-31 | Semi-physical simulation system and simulation method for microcomputer control system of diesel locomotive |
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| CN202210346255.8A CN114740758A (en) | 2022-03-31 | 2022-03-31 | Semi-physical simulation system and simulation method for microcomputer control system of diesel locomotive |
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Application publication date: 20220712 |