CN211741916U - Microcomputer network test stand for DC diesel locomotive - Google Patents
Microcomputer network test stand for DC diesel locomotive Download PDFInfo
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- CN211741916U CN211741916U CN201921463503.7U CN201921463503U CN211741916U CN 211741916 U CN211741916 U CN 211741916U CN 201921463503 U CN201921463503 U CN 201921463503U CN 211741916 U CN211741916 U CN 211741916U
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Abstract
The utility model discloses a direct current diesel locomotive microcomputer network test platform. The test bed comprises an alternating current-direct current power supply system; signal input and output acquisition detection systems; an instruction-driven amplification system; an analog quantity signal generation and adjustment system; a central networking control system; testing the system; the test bench cabinet body totality arranges, the utility model discloses a light-coupled isolation enlargies the working characteristic with the output of drive solid state relay second grade for each perceptual load equipment's of remote control break-make, thereby make it possess control locomotive normal machine, trade-direct current auxiliary power generation, diesel engine acceleration and deceleration, air pump wind, temperature cooling circulation system, draw fan, core function such as loading carriage. And the control aspect can carry out microcomputer excitation control and original excitation combined control, and the mutual selection of the two operation conditions greatly improves the reliability, redundancy and controllability of the locomotive, thereby realizing the normal operation of the locomotive.
Description
Technical Field
The utility model belongs to diesel locomotive test field, more specifically the direct current diesel locomotive microcomputer network test platform that says so.
Background
The microcomputer used by DF5G, 7G dc diesel locomotive is a device component with logic programming control mode as core. The working principle is that various current operating condition signals of various electric devices in the locomotive are fed back to a computer in a data conversion mode, the computer outputs a driving instruction in the form of a driving command after being processed by a program according to a fed-back actual signal, the driving instruction mainly performs primary amplification control on an operation circuit, an excitation circuit, a control circuit and other circuits of a main circuit and an auxiliary circuit of the locomotive, which are driven by optical isolation amplification, and the secondary amplification output of a solid-state relay is used for remotely controlling the on-off of each inductive load device and signal feedback, so that the locomotive has core functions of controlling the normal starting, the alternating-direct current auxiliary power generation, the diesel engine speed increase and decrease, the air pump, the water temperature cooling circulation system, the traction fan, the loading carriage and the like of the locomotive. Meanwhile, the microcomputer system device also has the functions of feeding back analog quantity signal values of the rotating speed of a locomotive diesel engine, the voltage, the current, the locomotive speed, the current of a main generator, the auxiliary alternating current power generation voltage, the constant speed cruise instruction, the voltage, the current, the frequency, the oil-water temperature, the pressure, various rotating speeds and the like output by various sensors to a microcomputer PID for calculation, actually comparing, calculating and correcting the given power and the feedback power of the main generator, outputting a PWM chopping signal through an analog quantity output port to change the duty ratio regulation range of an excitation regulator, and finishing the control and regulation of the output setting value of the excitation current of the main generator, so that the traction power of the main generator runs according to the constant power characteristic. In addition, the microcomputer has various protection functions such as plateau power correction, traction motor cutting correction, auxiliary power transfer, current limiting protection, voltage limiting protection, branch overcurrent, overvoltage protection, differential motion protection, locomotive overspeed protection and the like. Therefore, whether the microcomputer system device can work stably and safely or not plays a key role in guaranteeing the operation quality of the locomotive and has great significance in improving the normal operation of the locomotive.
Due to factors such as high temperature, corrosive gas and dust generated in the operation process of the locomotive, electromagnetic interference caused by external environment and the like, great quality and potential safety hazards are generated for normal working and use of a microcomputer device, and therefore a large amount of quality information is generated to seriously restrict the normal operation of the locomotive. Aiming at the defects of the current locomotive maintenance system in the actual maintenance method and test means in the aspect of the locomotive microcomputer device and the comprehensive discovery of market research and inquiry, the maintenance system needs to have special equipment for normal detection and corresponding function load test of the microcomputer control device.
Therefore, comprehensive detection and test equipment which can meet the requirements of a DF5G and DF7G direct-current diesel locomotive microcomputer system device control on-load test method is researched and manufactured, and an integral test is carried out in a linkage working mode in the test process by fusing other electronic accessories of a locomotive, so that the overhaul efficiency is improved, and the quality and potential safety hazards are reduced.
Disclosure of Invention
The technical scheme of the utility model develop successfully and satisfied that it is experimental to DF5G/7G series diesel locomotive microcomputer device, IDU touch screen, fill diesel locomotive and do not have this electron, electrical components's maintenance test equipment vacancy at the maintenance in-process. In addition, the detection of electronic and electric fittings and the working condition test mode are subversively improved according to the process requirements, so that the operation method of the test is simpler and more visual.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme: the test bed comprises an AC-DC power supply system, a signal input and output acquisition detection system, an instruction driving amplification system, an analog quantity signal generation adjustment system, a central networking control system, a test system and the overall arrangement of a test bed cabinet body;
the alternating current-direct current power supply system supplies power to the whole system, and the signal input and output acquisition detection system provides input and output signal acquisition for the test system; the instruction driving amplification system provides an output driving amplification function of a test result for the central networking control system; the analog quantity signal generation and adjustment system provides the running data analog quantity of the locomotive under various conditions for the test system to test the running condition of the locomotive.
Preferably, in the signal input and output acquisition and detection system, the switching instruction signal output adopts a PCI-1758UDO-128 channel isolation digital switching value output board, and is matched with a 39100 type signal adapter board to carry out relay switching sharing on the output signal of the central computer and the output amplification signal of the tested microcomputer, so that the signal input and output acquisition and detection system is responsible for isolation driving and primary amplification of each channel in the test bed, and has the functions of high voltage isolation and wide output power supply;
the switching value instruction signal input adopts a PCI-1758UDI-128 channel isolation digital switching value input board, relay switching and monitoring are carried out on a central computer input signal and a tested microcomputer output feedback signal by matching with a 39100 type signal adapter board, each channel has the functions of signal interruption and digital filtering, and the independence of the central computer and the microcomputer output feedback signal can be ensured;
the analog signal is input into PCI-1716 analog quantity data acquisition card, and matched with 8710 signal adapter board to uniformly distinguish and identify the feedback signals of frequency, voltage and current generated by the test bed, and then the feedback signals are centrally input into a central computer and a microcomputer system, and the relationship data required by the operation condition of the test locomotive is simulated through uniform adjustment.
Preferably, the analog quantity signal generation and adjustment system comprises an analog signal output system, the analog signal output system adopts IR100 and IR101 analog quantity driving outputs to respectively provide primary amplification outputs for microcomputer excitation, PWM chopping fixed-frequency signals are output through PID calculation, the adjustment of the duty ratio in the range of 1% -95% is realized, and the voltage and the current of the excitation winding of the traction generator are adjusted through secondary amplification of an excitation adjusting plate, so that the control process of the main generator running according to constant power is achieved.
Preferably, in the central networking control system, the test bed of the control system is jointly developed, designed and manufactured by adopting a local area network interconnection technology, and the overall arrangement of the system is carried out on the work tasks of the control system in a working mode of uniformly networking a central computer, a touch screen, a CQM1H microcomputer and an IDU full touch screen of the test bed; the test bed Zhongshan computer is a main control computer, and the CQM1H microcomputer and the IDU full touch screen are microcomputer system control computers.
Preferably, the central computer is a core component of the overall control of the test bed, is responsible for the central networking control function of the test bed, and is used for bearing the functions of generating and implementing various data, transmitting instructions, feeding back signals, displaying functions, recording and storing data and the like;
a PCI-1758 (UDI) digital input switch gauge plate, a PCI-1758 (UDO) digital output switch gauge plate and a PCI-1716 digital analog quantity are arranged in the device respectively; wherein, 1758-UDI digital input board has 128 channels, used for the output of each channel of order of the test bed and the feedback input of the switching value signal, 1758-UDO digital output board has 128 channels, used for the output of the test bed order and the first-class amplification output control of the microcomputer, PCI-1716 digital analog board has 64 channels, used for transmitting various analog signals generated by the test bed, comprising: signals such as current, voltage, pressure, water temperature and the like; the three digital measuring boards are communicated through CAN data bus, monitor and feed back various signals and data generated by the instruction mechanism of the test bed, the microcomputer and the IDU full control screen, and judge, distinguish and reserve the test data.
Preferably, the test bed is also provided with an auxiliary control computer, the auxiliary control computer is designed by adopting a touch screen, the computer is in networking communication with the central computer, a servo control technology is adopted for virtual control output by the instruction mechanism, load driving amplification is carried out on the secondary instruction mechanism through the output of a virtual instruction signal, and the actual participation condition of the secondary amplification signal is controlled in two ways;
the first path is responsible for inputting various command signals required by the execution microcomputer under the condition of simulating the operating condition and controlling a virtual mechanism of the microcomputer protection system; the second path is responsible for feeding back the actual output state of the central computer and the feedback of the operating condition of the microcomputer, and the actual control and fault finding of the simulated operation of the locomotive are realized through the mutual intervention of the central computer and the microcomputer control system; in function touch selection, a microcomputer logic program can only drive a certain function according to the actual control mode of the locomotive.
Preferably, the overall arrangement of the test bed cabinet body is that after the size appearance of the computer, the touch screen, various instruments, electronics, electrical appliances and other accessories needing to be installed in the test bed is determined, the overall size of the test bed is designed and planned, and various electronics and electrical appliance accessories are organically and reasonably integrated, namely, the power supply system, the microcomputer system, the driving amplification system, the data acquisition system and the test system are separately designed and installed in a classified mode.
Preferably, the test bed is also provided with a network interface, and the test report can be transmitted to a workshop overhaul data center for filing and sharing through the network interface.
The utility model discloses beneficial effect:
the diesel locomotive microcomputer control device on-load test bed is successfully developed to meet the requirements of DF5G/7G series diesel locomotive microcomputer device and IDU touch screen tests, and fills the vacancy of the diesel locomotive in the overhaul process of overhaul test equipment without electronic and electrical components. In addition, the detection of electronic and electric fittings and the working condition test mode are subversively improved according to the process requirements, so that the operation method of the test is simpler and more visual.
The labor intensity of workers is reduced, and the maintenance safety risk is avoided. The use of the device changes the situation that the original electronic part can only be loaded for testing after being overhauled, and if the test is unqualified, the electronic part needs to be dismantled for overhauling again, so that the working efficiency is very low, and the quality is not easy to ensure; meanwhile, the safety risk that the electric shock of the accessory injures people and the risk of damaging accessory parts are avoided.
The reliable and perfect test method is provided, the requirement of process maintenance is met, a good foundation is laid for comprehensively understanding and testing the maintenance method and the application principle of the microcomputer device, the original backward and complicated detection mode is changed, and the accuracy and the advancement of measured data are ensured.
Drawings
FIG. 1 is a general block diagram of a test stand system;
FIG. 2 is a diagram of a power module control architecture;
FIG. 3 is a diagram of an IR000 command input board card control architecture;
FIG. 4 is a diagram of the IRO13 command input board card control architecture;
FIG. 5 is a diagram of the IRO14 command input board card control architecture;
FIG. 6 is a diagram of the IRO16 command input board card control architecture;
FIG. 7 is a view of a driving amplification control structure of an IR102 driving output board card;
fig. 8 is a structure diagram of the drive amplification control of the IR103 drive output board card;
FIG. 9 is a view showing a driving amplification control structure of an IR104 driving output board card;
FIG. 10 is a view showing a driving amplification control structure of an IR105 driving output board card;
FIG. 11 is a control structure diagram of an IR001-012 analog quantity signal input board card;
FIG. 12 is a diagram of a diesel/ventilator speed, analog quantity control architecture;
FIG. 13 is a diagram of the control structure of the excitation driving amplification analog output of the microcomputer;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: as shown in fig. 1-13: the test bed comprises an AC-DC power supply system, a signal input and output acquisition detection system, an instruction driving amplification system, an analog quantity signal generation adjustment system, a central networking control system, a test system and the overall arrangement of a test bed cabinet body; the alternating current-direct current power supply system supplies power to the whole system, and the signal input and output acquisition detection system provides input and output signal acquisition for the test system; the instruction driving amplification system provides an output driving amplification function of a test result for the central networking control system; the analog quantity signal generation and adjustment system provides the running data analog quantity of the locomotive under various conditions for the test system to test the running condition of the locomotive.
In the signal input and output acquisition detection system, the switch instruction signal output adopts a PCI-1758UDO-128 channel isolation digital switching value output board, and is matched with a 39100 type signal adapter board to carry out relay switching sharing on a central computer output signal and a tested microcomputer output amplification signal, so that the system is in charge of isolation driving and primary amplification of each channel in a test bed, and has the functions of high voltage isolation and wide output power supply; the switching value instruction signal input adopts a PCI-1758UDI-128 channel isolation digital switching value input board, relay switching and monitoring are carried out on a central computer input signal and a tested microcomputer output feedback signal by matching with a 39100 type signal adapter board, each channel has the functions of signal interruption and digital filtering, and the independence of the central computer and the microcomputer output feedback signal can be ensured; the analog signal is input into PCI-1716 analog quantity data acquisition card, and matched with 8710 signal adapter board to uniformly distinguish and identify the feedback signals of frequency, voltage and current generated by the test bed, and then the feedback signals are centrally input into a central computer and a microcomputer system, and the relationship data required by the operation condition of the test locomotive is simulated through uniform adjustment.
The analog signal generation and adjustment system comprises an analog signal output system, the analog signal output system adopts IR100 and IR101 analog quantity drive outputs to respectively provide primary amplification output for microcomputer excitation, PWM chopping frequency-fixed signals are output through PID calculation, the duty ratio is adjusted within the range of 1% -95%, and the voltage and the current of the excitation winding of the traction generator are adjusted through secondary amplification of an excitation adjusting plate, so that the control process that the main generator operates according to constant power is achieved.
The central networking control system adopts the local area network interconnection technology to carry out joint development design and manufacture on the test bed, and the work tasks of the control system are systematically arranged in a unified networking working mode of a central computer (a main control computer), a touch screen (an auxiliary control computer), a CQM1H microcomputer and an IDU full touch screen (a microcomputer system control computer) of the test bed. The central computer and the auxiliary control computer are controlled in a grading way (upper-lower conversion) by using a servo industrial control program, various data, instructions, feedback signals and output amplification driving working conditions are unified, sorted and fused, and the tested microcomputer device and the IDU full touch screen are respectively subjected to logic control and various data signal processing and feedback, so that a complete and effective comprehensive test is performed on the overall control performance of the working condition system applied to the locomotive microcomputer device, and a comprehensive overhaul and operation test platform integrating detection, test, data uploading and development and learning is formed.
The central computer is a main control core component of the test bed, is responsible for the central networking control function of the test bed, and is used for bearing the functions of generating and implementing various data, transmitting instructions, feeding back signals, displaying functions, recording and storing data and the like. The design of internal redundancy extension is carried out by adopting a common frame compatible mode, and a PCI-1758 (UDI) digital quantity input switch gauge plate, a PCI-1758 (UDO) digital quantity output switch gauge plate and a PCI-1716 digital analog quantity are respectively installed. Wherein, 1758-UDI digital input board has 128 channels, used for the output of each channel of order of the test bed and the feedback input of the switching value signal, 1758-UDO digital output board has 128 channels, used for the output of the test bed order and the first-class amplification output control of the microcomputer, PCI-1716 digital analog board has 64 channels, used for transmitting various analog signals generated by the test bed, comprising: current, voltage, pressure, water temperature, etc. The three digital measuring boards are communicated through CAN data bus, monitor and feed back various signals and data generated by the instruction mechanism of the test bed, the microcomputer and the IDU full control screen, and judge, distinguish and reserve the test data.
The test bed is also provided with an auxiliary control computer which is in networking communication with the central computer, adopts a servo control technology for virtual control of the output of the instruction mechanism, carries out load driving amplification on the secondary instruction mechanism through the output of a virtual instruction signal, and divides the actual participation condition of the secondary amplification signal into two paths of control. The first path is responsible for inputting various command signals required by the execution microcomputer under the condition of simulating the operating condition and controlling a virtual mechanism of the microcomputer protection system; the second path is responsible for feeding back the actual output state of the central computer and the feedback of the operating condition of the microcomputer, and the actual control and fault finding of the simulated operation of the locomotive are realized through the mutual intervention of the central computer and the microcomputer control system. In function touch selection, a microcomputer logic program can only drive a certain function according to the actual control mode of the locomotive. Such as: after the manual output instruction of the air pump is selected, the automatic air pump can not be selected, so the same system working condition can only be selected according to the test requirement, and the microcomputer logic working condition is also controlled according to the selected working condition.
The test bench install IDU full touch screen (overall arrangement computer) and adopt point-to-point communication mode to transmit through being surveyed the microcomputer according to the various information resources that the test bench produced, the abundant each operating mode of reduction locomotive present simulation application of system to control through internal system carries out subregion processing to all kinds of data module, divide into altogether: the system comprises the important system functions of parameter setting, a diesel engine system, an auxiliary system, an electric appliance traction system, a protection system, an application state system, a fault display system, a logic query function removing system, fault recording, microcomputer resetting, fault clearing and the like.
The overall arrangement of the test bed cabinet body is that after the size appearance of accessories such as a computer, a touch screen, various instruments, electronics and electric appliances to be installed in the test bed is determined, the overall size of the test bed is designed and planned, and various electronics and electric appliance accessories are organically and reasonably integrated, namely, a power supply system, a microcomputer system, a driving amplification system, a data acquisition system and the test system are separately designed and installed in a classified mode. The test bed is also required to be provided with a network interface, and the test report can be transmitted to a workshop maintenance data center through the network interface for filing and sharing.
The drive amplifying circuit is used for carrying out a step-by-step amplification test according to the principle of locomotive logical working conditions in the process of carrying out various tests on the tested microcomputer, whether the command signal and the load driving working conditions generated in the test process conform to the driving conditions required in the actual application process of the locomotive or not, in addition, because the driving current of the test bed command driving board card (1758 UDI) is small, and the control can be carried out only by the working principle of step-by-step amplification in the process of sending the driving command, therefore, the common part of the control command output of the central computer and the load output controlled by the microcomputer adopts a two-stage optical isolation drive amplifier (solid state relay), the control of capacitive load and inductive load is realized by the action of an electromagnetic relay driven by the two stages of the solid state relay, and the aim of whether the action command and the feedback signal are coordinated and unified work in the networking test process of the central computer and the tested microcomputer is achieved by comparing the feedback signals, so as to detect the performance of the tested microcomputer.
The analog quantity signal circuit and the test bed need to generate certain data signals to support the normal work of the microcomputer system in the process of testing the microcomputer. These signals include: ac/dc voltage, current, speed, pressure, temperature. The microcomputer needs the adjustment and change of the signals in the operation process to realize the normal control of the analog operation of the locomotive. Meanwhile, due to the difference of signal sources, when various analog quantity signals are provided for a computer and a microcomputer, a working mode that the signal sources are uniformly blended into supply is adopted for design. The unified signal source is output in two paths, one path is served for a PCI-1716 digital analog board and a central computer, the other path is transmitted to the analog board of the tested microcomputer system for calculation and comparison, and a microcomputer CPU calculation signal is transmitted to an IDU touch screen for display and protection through a data bus, and signals such as main generation voltage, current, alternating current generator voltage, current, temperature, diesel engine rotating speed, front and rear ventilator rotating speed and the like generated by the analog signal source are uniformly displayed and protected and cut through the partition design of the IDU touch screen, and are brought into a test desk for development and management. The signal generator comprises three types of voltage signals, frequency signals and rotating speed signals, the consistency of all signal adjustment is realized by uniformly controlling and adjusting the input power supply, and the functions of separately adjusting and protecting the rotating speed of a diesel engine, the rotating speed of a ventilator, the pressure of lubricating oil, the temperature of cooling water, the voltage/current of main power generation, the voltage of 1/2 frames, alternating current voltage/current, power parameters and the like can be tested, so that the accuracy of a microcomputer logic protection program is ensured, and the rigidness and the uniformity of a whole machine test are ensured.
Example 2:
the corresponding logical relationship of the network virtual control items of the diesel engine starting test and the protection function is illustrated as follows: the touch screen of the test bed displays the interface state of the switching value, and when the speed regulation handle of the driver controller is in zero position (the red dialog box is lightened to prove that the logical relationship of the zero position of the main handle is correct, and when the position is more than 1, the red dialog box is lightened to extinguish in green). The method comprises the steps of clicking a lubricating oil pump starting instruction dialog box, clicking and inputting a lubricating oil pump starting input instruction by a test bench, enabling an amplified signal to enter a tested microcomputer system device (PLC) to be driven and amplified, feeding back a received signal to the test bench by an amplified switching value through a data acquisition unit, lighting up a display screen lubricating oil pump starting feedback dialog box after being driven by a microcomputer, indicating that the tested microcomputer device lubricating oil pump starting circuit works normally in logical relation and signals are fed back normally, and storing test data. Other input commands and operating conditions have the same logical relationship. (2) The 6 protection functions of the pivot linkage protection, the differential pressure protection, the shutdown electromagnet, the low water level, the lubricating oil pressure protection and the three shutdown protections are used for testing the logic relationship protection function of the tested microcomputer device, any dialog box is clicked, the logic relationship of the microcomputer carries out protection limit alarm, and normal work cannot be carried out.
Example 3:
the corresponding logical relationship of the virtual setting items of the 5D traction motor current feedback protection test network is as follows: the touch screen of the test bed displays the state of a parameter setting interface of the microcomputer, clicks a current output instruction dialog box of the 1.3.5D traction motor and the 2.4.6D traction motor, respectively adjusts and sets analog quantity data of the 1.3.5D traction motor and the 2.4.6D traction motor, the set current data waits for a logic channel to be fed back to the microcomputer system to be tested, and simultaneously after the main control computer of the test bed receives an instruction and an analog quantity signal, the analog quantity signal output module is driven, amplified and output, the output 1.3.5D and 2.4.6D motor current analog quantity signals enter a tested microcomputer system device (CPU module) for identification and verification, the data of the current of the traction motor is transmitted to the IDU touch screen for display through the CAN data bus, at the moment, when the microcomputer system respectively detects the current feedback data of the 1.3.5D traction motor and the 2.4.6D traction motor (the test bed respectively sets the current of the 1.3.5D traction motor and the current of the 2.4.6D traction motor, and the current equalizing coefficient is adjusted to be switched between 0 percent and 100 percent). After the current equalizing coefficient of the traction motor exceeds a threshold value of 20% set by a program through PID calculation, a microcomputer system automatically blocks and adjusts a chopping signal of an analog output port PWM within 5 seconds, the microcomputer is in a set state and records faults, meanwhile, an alarm driving signal is output to a test bench main control computer, and the computer drives a buzzer alarm circuit to work after receiving an alarm instruction, so that the virtual network setting test item function work is normal, and the signal feedback is normal. After a fault occurs, the microcomputer is in a setting working condition, and after a microcomputer reset button of the test bed or an IDU touch screen reset button is manually pressed, the microcomputer is reset normally or restarted, and then the next test can be carried out (the function can be detected when the analog quantity plug-in board has a fault).
The utility model discloses the working process: touch screen instruction output → main control computer → switching instruction signal output → solid state relay first stage amplification drive → relay signal input → microcomputer signal input → IDU touch screen (synchronous calculation with microcomputer device) → microcomputer amplification output → solid state relay second stage amplification → relay drive → relay signal feedback → switching signal input → main control computer → display screen → data storage → printing.
Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The microcomputer network test bed of the direct current diesel locomotive is characterized in that: the test bed comprises an AC-DC power supply system, a signal input and output acquisition detection system, an instruction driving amplification system, an analog quantity signal generation adjustment system, a central networking control system, a test system and the overall arrangement of a test bed cabinet body;
the alternating current-direct current power supply system supplies power to the whole system, and the signal input and output acquisition detection system provides input and output signal acquisition for the test system; the instruction driving amplification system provides an output driving amplification function of a test result for the central networking control system; the analog quantity signal generation and adjustment system provides the operation data analog quantity of the locomotive for the test system to test the operation condition of the locomotive.
2. The direct current diesel locomotive microcomputer network test stand according to claim 1, characterized in that: in the signal input and output acquisition detection system, the switch instruction signal output adopts a PCI-1758UDO-128 channel isolation digital switching value output board, and is matched with a 39100 type signal adapter board to carry out relay switching sharing on a central computer output signal and a tested microcomputer output amplification signal, so that the system is in charge of isolation driving and primary amplification of each channel in a test bed, and has the functions of high voltage isolation and wide output power supply;
the switching value instruction signal input adopts a PCI-1758UDI-128 channel isolation digital switching value input board, relay switching and monitoring are carried out on a central computer input signal and a tested microcomputer output feedback signal by matching with a 39100 type signal adapter board, each channel has the functions of signal interruption and digital filtering, and the independence of the central computer and the microcomputer output feedback signal can be ensured;
the analog signal is input into PCI-1716 analog quantity data acquisition card, and matched with 8710 signal adapter board to uniformly distinguish and identify the feedback signals of frequency, voltage and current generated by the test bed, and then the feedback signals are centrally input into a central computer and a microcomputer system, and the relationship data required by the operation condition of the test locomotive is simulated through uniform adjustment.
3. The direct current diesel locomotive microcomputer network test stand according to claim 1, characterized in that: the analog signal generation and adjustment system comprises an analog signal output system, the analog signal output system adopts IR100 and IR101 analog quantity drive outputs to respectively provide primary amplification output for microcomputer excitation, PWM chopping frequency-fixed signals are output through PID calculation, the duty ratio is adjusted within the range of 1% -95%, and the voltage and the current of the excitation winding of the traction generator are adjusted through secondary amplification of an excitation adjusting plate, so that the control process that the main generator operates according to constant power is achieved.
4. The direct current diesel locomotive microcomputer network test stand according to claim 1, characterized in that: in the central networking control system, the test bed of the control system adopts the local area network interconnection technology to carry out joint development, design and manufacture, and the overall arrangement of the system is carried out on the work tasks of the control system in a working mode of uniformly networking a central computer, a touch screen, a CQM1H microcomputer and an IDU full touch screen of the test bed; the test bed Zhongshan computer is a main control computer, and the CQM1H microcomputer and the IDU full touch screen are microcomputer system control computers.
5. The direct current diesel locomotive microcomputer network test stand according to claim 4, characterized in that: the central computer is a main control core component of the test bed, is responsible for the central networking control function of the test bed, and is used for bearing the functions of generating and implementing various data, transmitting instructions, feeding signals, displaying functions and recording and storing data;
a PCI-1758 (UDI) digital input switch gauge plate, a PCI-1758 (UDO) digital output switch gauge plate and a PCI-1716 digital analog quantity are arranged in the device respectively; wherein, 1758-UDI digital input board has 128 channels, used for the output of each channel of order of the test bed and the feedback input of the switching value signal, 1758-UDO digital output board has 128 channels, used for the output of the test bed order and the first-class amplification output control of the microcomputer, PCI-1716 digital analog board has 64 channels, used for transmitting the analog signal produced by the test bed, comprising: current, voltage, pressure, water temperature signals; the three digital measuring boards are communicated through CAN data bus, monitor and feed back various signals and data generated by the instruction mechanism of the test bed, the microcomputer and the IDU full control screen, and judge, distinguish and reserve the test data.
6. The direct current diesel locomotive microcomputer network test stand according to claim 4, characterized in that: the test bed is also provided with an auxiliary control computer, the auxiliary control computer adopts a touch screen design, the computer is in networking communication with the central computer, a servo control technology is adopted for virtual control of the output of the instruction mechanism, load driving amplification is carried out on the secondary instruction mechanism through the output of a virtual instruction signal, and the actual participation condition of the secondary amplification signal is controlled in two ways;
the first path is responsible for inputting various command signals required by the execution microcomputer under the condition of simulating the operating condition and controlling a virtual mechanism of the microcomputer protection system; the second path is responsible for feeding back the actual output state of the central computer and the feedback of the operating condition of the microcomputer, and the actual control and fault finding of the simulated operation of the locomotive are realized through the mutual intervention of the central computer and the microcomputer control system; in function touch selection, a microcomputer logic program can only drive a certain function according to the actual control mode of the locomotive.
7. The direct current diesel locomotive microcomputer network test stand according to claim 1, characterized in that: the overall arrangement of the test bed cabinet body is that after the size appearance of a computer, a touch screen, various instruments, electronics and electrical accessories to be installed in the test bed is determined, the overall size of the test bed is designed and planned, and various electronics and electrical accessories are organically and reasonably integrated, namely, a power supply system, a microcomputer system, a driving amplification system, a data acquisition system and the test system are separately designed and installed in a classified mode.
8. The direct current diesel locomotive microcomputer network test stand according to claim 1, characterized in that: the test bed is also required to be provided with a network interface, and the test report can be transmitted to a workshop maintenance data center through the network interface for filing and sharing.
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| CN201921463503.7U CN211741916U (en) | 2019-09-04 | 2019-09-04 | Microcomputer network test stand for DC diesel locomotive |
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| CN201921463503.7U CN211741916U (en) | 2019-09-04 | 2019-09-04 | Microcomputer network test stand for DC diesel locomotive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358967A (en) * | 2021-06-29 | 2021-09-07 | 青岛思锐科技有限公司 | Test bed electrical test method and system |
| CN116339229A (en) * | 2023-05-25 | 2023-06-27 | 眉山中车制动科技股份有限公司 | Test bed locomotive brake control system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358967A (en) * | 2021-06-29 | 2021-09-07 | 青岛思锐科技有限公司 | Test bed electrical test method and system |
| CN116339229A (en) * | 2023-05-25 | 2023-06-27 | 眉山中车制动科技股份有限公司 | Test bed locomotive brake control system and method |
| CN116339229B (en) * | 2023-05-25 | 2023-08-15 | 眉山中车制动科技股份有限公司 | Test bed locomotive brake control system and method |
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