HXN5B / HXD3D locomotive analog quantity signal generation protection detector

Abstract

The utility model discloses an HXN5B / HXD3D locomotive analog quantity signal generation protection detector which comprises a rotating speed signal generation device and a pressure and temperature signal generation device. The input end of the rotating speed signal generating device is connected with a power supply, the output end is connected with the HXN5B microcomputer system, the input end of the pressure and temperature signal generating device is connected with the power supply, and the output end is connected with the HXN5B microcomputer system or the HXD3D microcomputer system in parallel. According to the utility model, rotating speed signals are provided through the rotating speed signal generating device, pressure and temperature signals are provided through the pressure and temperature signal generating device, and the working condition of a microcomputer system is simulated, so that each pressure, temperature and rotating speed protection system of an HXN5B microcomputer system or an HXD3D microcomputer system is tested.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection technical field especially relates to a HXN5B / HXD3D locomotive analog quantity signal generation protection detector. BACKGROUND

[0002] Harmony 5B type diesel locomotive, its model is HXN5B, harmony 3D type electric locomotive, its model is HXD3D. HXN5B carries out C4 overhaul process according to the general company regulation process execution requirement, needs to test the protection system of each item of locomotive microcomputer, to test the whole vehicle application standard and working state. Microcomputer system protection function test requirement includes: diesel engine oil outlet temperature, diesel engine cooling water temperature, diesel engine outlet oil pressure, diesel engine fuel pressure, crankcase overpressure, left / right side turbine temperature, air filter blockage etc. project. Harmony series locomotive (diesel, electric) internal design uses a large number of sensors, and the working system of these sensors is different, including active and passive two categories, and two categories are divided into frequency, voltage, current etc. variable signal (including pressure, temperature, speed). When various normal analog quantity signals input microcomputer, the whole microcomputer program system carries out setting calculation to various analog quantity signals, compares the feedback analog quantity signal, determines the power output and application state of present microcomputer system, to bear the normal traction application of supporting locomotive. When the fault of certain sensor cannot normally feedback monitoring system state, microcomputer system automatically locks traction converter valve measurement signal, forces locomotive to reduce power application or carries out size reset processing and then can be used.

[0003] Because the present overhaul system lacks the detection equipment of the protection function of microcomputer system of this type locomotive, can only observe the feedback of each item data in the process of starting machine, cannot carry out detection test according to regulation process. Through the understanding of each local group company overhaul system, this type locomotive also does not have the complete method and special means to carry out protection detection of each test item after C4 overhaul.

[0004] In existing locomotive microcomputer testing devices, such as the Chinese utility model patent with patent number CN201220488209.3, a locomotive microcomputer test bench is disclosed, including an industrial control computer and a locomotive-mounted microcomputer. The industrial control computer and the locomotive-mounted microcomputer are connected by opto-isolation. The industrial control computer is connected to switch signals, analog signals, and frequency signals. The locomotive-mounted microcomputer is connected to a first-chamber screen and a second-chamber screen via a CAN bus. This microcomputer test bench also has the following drawbacks: 1. The industrial control computer is fixed and cannot be moved, making it impossible to carry to the locomotive for testing. Before testing, pipelines need to be laid to the locomotive maintenance location, which is inconvenient; 2. The data terminal of the industrial control computer is separated from the testing terminal of the locomotive microcomputer, preventing on-site personnel from obtaining data information immediately, making parameter adjustment inconvenient, and resulting in low testing efficiency. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an HXN5B / HXD3D locomotive analog signal generation protection detector that can detect the protection functions of HXN5B microcomputer system and HXD3D microcomputer system.

[0006] This utility model is achieved through the following technical solution:

[0007] The HXN5B / HXD3D locomotive analog signal generation and protection detector includes:

[0008] The speed signal generator 1 has an input end connected to a power supply and an output end connected to the HXN5B microcomputer system 3, which is used to test the overspeed protection function of the HXN5B microcomputer system 3 for diesel engine speed.

[0009] The pressure and temperature signal generating device 2 has an input terminal connected to a power supply and an output terminal connected in parallel to the HXN5B microcomputer system 3 and / or the HXD3D microcomputer system 4. It is used to test the operation protection function of the HXN5B microcomputer system 3 for diesel engine oil temperature, diesel engine oil pressure, diesel engine water temperature, and diesel engine fuel pressure, and to test the operation protection function of the HXD3D microcomputer system 4 for the main transformer top temperature and main transformer outlet temperature.

[0010] Furthermore, the speed signal generating device 1 includes:

[0011] The first voltage conversion module 11 has its input terminal connected to a 220V power supply.

[0012] The input terminal of the speed control module 12 is connected to the output terminal of the first voltage conversion module 11.

[0013] The input terminal of the variable motor 13 is connected to the output terminal of the speed control module 12;

[0014] The rotation speed sensor 14 detects the output end of the variable function motor 13, and the output end is connected to the HXN5B microcomputer system 3 of the locomotive.

[0015] Further, the pressure and temperature signal generating device 2 comprises:

[0016] The second voltage switching module 21 is connected to the 220V power supply at the input end.

[0017] The pressure signal setting module 22 is connected to the output end of the second voltage switching module 21 at the input end.

[0018] The temperature signal setting module 23 is connected to the output end of the second voltage switching module 21 in parallel with the pressure signal setting module 22 at the input end.

[0019] The pressure sensor control plug-in 24 is connected to the output end of the pressure signal setting module 22 at the input end, and is connected to the HXN5B microcomputer system 3 at the output end.

[0020] The temperature sensor control plug-in 25 is connected to the temperature signal setting module 23 at the input end, and is connected to the HXN5B microcomputer system 3 and the HXD3D microcomputer system 4 in parallel at the output end.

[0021] Further, the output end of the variable function motor 13 is coaxially provided with a signaling gear 131, and the detection end of the rotation speed sensor 14 is aligned with the signaling gear 131.

[0022] Further, the control panel is provided with a power switch, an electric measuring instrument and an adjusting knob on the front end of the box body of the rotation speed signal generating device 1 and the pressure and temperature signal generating device 2.

[0023] Further, the rotation speed range of the variable function motor 13 is 0-1200r / min.

[0024] Further, the detection range of the pressure sensor control plug-in 24 is 0-250psia.

[0025] Further, the detection range of the temperature sensor control plug-in 25 is -40℃-150℃.

[0026] The working principle of the utility model:

[0027] The utility model discloses a rotation speed signal generating device 1 provides rotation speed signal, provides pressure and temperature signal through pressure and temperature signal generating device 2, and transmission reaches HXN5B microcomputer system 3 and / or HXD3D microcomputer system 4, provides pressure, temperature, rotation speed signal for HXN5B microcomputer system 3 and / or HXD3D microcomputer system 4, analog HXN5B microcomputer system 3 and HXD3D microcomputer system 4's working condition, thereby to HXN5B microcomputer system 3 distribution's each pressure, temperature, rotation speed protection system and HXD3D microcomputer system 4 main transformer's cooling oil temperature protection system are tested.

[0028] In rotation speed signal generating device 1, first voltage adapter module 11 provides the required 24V DC voltage for rotation speed control module 12, provides rotation speed setting and protection measures for the function variable motor through rotation speed control module 12, and the pulse frequency generated by rotation speed sensor 14 is fed back to HXN5B microcomputer system 3, HXN5B microcomputer system 3 executes secondary open program and defaults locomotive start success, thereby establishing microcomputer reset relationship for next step test. Rotation speed signal generating device 1 can provide 0-1200r / min pulse frequency for HXN5B microcomputer system 3, ensure normal work under each rotation speed working condition system, and can also provide detection of diesel engine overspeed test protection point. The signal detector provides active signal under this working condition.

[0029] In pressure and temperature signal generating device 2, second voltage adapter module 21 provides the required 24V DC voltage for pressure signal setting module 22 and temperature signal setting module 23. When testing the action protection function of HXN5B microcomputer system 3 for each type of pressure sensor, adjust the high and low level signals of pressure signal setting module 22 to make it participate in the control of pressure sensor potential adjustment, output the analog variable signal to locomotive microcomputer LCS device, and HXN5B microcomputer system 3 receives the sensor project parameter conditions participating in the test, thereby performing systematic protection function test, to demonstrate the real change of the analog signal generated by the detector, to achieve an effective detection of the pressure system of LCS device of HXN5B microcomputer system 3. The signal detector provides active signal under this working condition.

[0030] When the HXN5B microcomputer system 3 or the HXD3D microcomputer system 4 is in the action protection function state of each type of temperature sensor, the high and low non-linear values of the temperature signal setting module 23 are adjusted, the temperature sensor control plug-in 25 is driven to output through the non-linear relationship change, the HXN5B microcomputer system 3 or the HXD3D microcomputer system 4 receives the parameter condition of the participating test sensor item, and thus the systematic protection function test is carried out, the real change of the analog signal generated by the detection instrument is demonstrated, and an effective detection of the LCS device of the HXN5B microcomputer system 3 or the HXD3D microcomputer system 4 is achieved. The signal detection instrument provides a passive signal in this working condition.

[0031] The utility model discloses the beneficial effect compared with prior art:

[0032] The utility model discloses through the systematic test of locomotive microcomputer system, can test each item of diesel engine rotating speed, diesel engine oil outlet temperature, diesel engine cooling water temperature, diesel engine outlet oil pressure, diesel engine fuel pressure, crankcase overpressure, left / right side turbine temperature, air filter blockage etc., to detect the accuracy and normality of locomotive microcomputer system protection function, through the implementation of locomotive microcomputer system protection and the normal intervention of size reset function, completely satisfy the normal test of HXN5B microcomputer system 3 and HXD3D microcomputer system 4 protection function, timely find the fault problem of HXN5B microcomputer system 3 and HXD3D microcomputer system 4, guarantee the normal use of locomotive.

[0033] The utility model discloses through rotating speed signal generating device 1 provides rotating speed signal, through pressure and temperature signal generating device 2 provides pressure and temperature signal, need not start diesel engine on locomotive, test convenient, and the detection efficiency is high.

[0034] The utility model discloses can be carried to locomotive and test, convenient to carry, and the staff on -the -spot adjustment test parameter is convenient, and the intuitive reaction test data. ACCURACY

[0035] Figure 1 It is the structure principle diagram of the utility model;

[0036] Figure 2 It is the three -dimensional structure schematic diagram of the utility model;

[0037] Figure 3 It is the structure principle diagram of rotating speed signal generating device of the utility model;

[0038] Figure 4 It is the internal structure schematic diagram of rotating speed signal generating device of the utility model;

[0039] Figure 5 It is the structure principle diagram of pressure and temperature signal generating device of the utility model;

[0040] Figure 6 It is internal structure schematic view of pressure and temperature signal generating device of the utility model.

[0041] Marked number in the drawing:

[0042] 1-rotating speed signal generating device, 11-first voltage switching module, 12-rotating speed control module, 13-variator motor, 131-signalling gear, 14-rotating speed sensor;

[0043] 2-pressure and temperature signal generating device, 21-second voltage switching module, 22-pressure signal setting module, 23-temperature signal setting module, 24-pressure sensor control plug-in, 25-temperature sensor control plug-in;

[0044] 3-HXN5B microcomputer system;

[0045] 4-HXD3D microcomputer system. DETAILED DESCRIPTION

[0046] In order to make the person skilled in the art better understand the technical scheme of the utility model, the specific embodiments thereof will be described in detail below with reference to the drawings.

[0047] As shown in Figures 1-6 HXN5B / HXD3D locomotive analog signal generating protection detector, including rotating speed signal generating device 1 and pressure and temperature signal generating device 2.

[0048] In the embodiment, rotating speed signal generating device 1 is used to test the over-speed protection function of HXN5B microcomputer system 3 for diesel engine rotating speed; pressure and temperature signal generating device 2 is used to test the action protection function of HXN5B microcomputer system 3 for diesel engine oil temperature, diesel engine oil pressure, diesel engine water temperature, diesel engine fuel pressure, and the action protection function of HXD3D microcomputer system 4 for main transformer top temperature and main transformer outlet temperature.

[0049] In the embodiment, as shown in Figure 3 、 4 Rotating speed signal generating device 1 includes first voltage switching module 11, rotating speed control module 12, variator motor 13 and rotating speed sensor 14. The input end of first voltage switching module 11 is connected with 220V power supply, and the output end is connected with the input end of rotating speed control module 12; the output end of rotating speed control module 12 is connected with the input end of variator motor 13; the output end of variator motor 13 is coaxially provided with signalling gear 131, and the detection end of rotating speed sensor 14 detects signalling gear 131; the output end of rotating speed sensor 14 is connected with each type of rotating speed sensor protection system interface on HXN5B microcomputer system 3.

[0050] The first voltage switching module 11 is used to rectify 220V AC into 24V DC to provide 24V DC for the speed control module 12; the speed control module 12 is used to control the speed of the variable-speed motor 13, and the speed control module 12 adjusts the speed of the variable-speed motor 13 through the speed adjusting knob on the front-end control panel of the speed signal generating device 1 box; the speed sensor 14 is used to detect the speed of the transmission gear 131 on the output shaft of the variable-speed motor 13 and convert the speed signal into an electric signal to be transmitted to the HXN5B microcomputer system 3.

[0051] In the embodiment, as shown in Figure 5 、 6 , the pressure and temperature signal generating device 2 comprises a second voltage switching module 21, a pressure signal setting module 22, a temperature signal setting module 23, a pressure sensor control plug-in 24 and a temperature sensor control plug-in 25. The input end of the second voltage switching module 21 is connected with a 220V power supply, the input ends of the pressure signal setting module 22 and the temperature signal setting module 23 are connected in parallel with the output end of the second voltage switching module 21, the input end of the pressure sensor control plug-in 24 is connected with the output end of the pressure signal setting module 22, and the output end is connected with the HXN5B microcomputer system 3; the input end of the temperature sensor control plug-in 25 is connected with the temperature signal setting module 23, and the output end is connected in parallel with the HXN5B microcomputer system 3 and the HXD3D microcomputer system 4.

[0052] The second voltage switching module 21 is used to rectify 220V AC into 24V DC to provide 24V DC for the pressure signal setting module 22 and the temperature signal setting module 23; the pressure signal setting module 22 is used to provide a pressure signal, the pressure sensor control plug-in 24 is used to detect the pressure signal generated by the signal setting module 22 and convert the pressure signal into an electric signal to be transmitted to the HXN5B microcomputer system 3; the temperature signal setting module 23 is used to provide a temperature signal, the temperature sensor control plug-in 25 is used to detect the temperature signal generated by the temperature signal setting module 23 and convert the temperature signal into an electric signal to be transmitted to the HXN5B microcomputer system 3 or the HXD3D microcomputer system 4; the pressure signal setting module 22 and the temperature signal setting module 23 adjust the pressure and temperature through the pressure adjusting knob and the temperature adjusting knob on the front-end control panel of the pressure and temperature signal generating device 2 box.

[0053] In the embodiment, as shown in Figure 2 , the control panel at the front end of the speed signal generating device 1 is provided with a power switch, electric measuring instruments and a speed adjusting knob, and the electric measuring instruments of the speed signal generating device 1 comprise a voltmeter, an ohmmeter and a tachometer.

[0054] The control panel on the front end of the pressure and temperature signal generating device 2 box is provided with a power switch, electric measuring instruments, a pressure adjusting knob, and a temperature adjusting knob.

[0055] The rotating speed range of the function generator 13 is 0-1200r / min.

[0056] The detection range of the pressure sensor control plug-in 24 is 0-250psia.

[0057] The detection range of the temperature sensor control plug-in 25 is -40℃-150℃.

[0058] The working mode of the utility model is as follows:

[0059] In the logical program design process of the HXN5B microcomputer system 3, in order to protect the safety of each system component and personnel, the locomotive must be in a starting state, and the pulse signal of the diesel engine rotating speed not lower than 400r / min is fed back to the microcomputer system, and the HXN5B microcomputer system 3 executes the secondary open conduction when receiving the rotating speed frequency. Therefore, the rotating speed signal generating device 1 needs to send a fixed pulse frequency to the HXN5B microcomputer system 3, and the HXN5B microcomputer system 3 defaults the rotating speed signal to execute the secondary open program. The step test is ensured to be developed.

[0060] Test points:

[0061] The HXN5B locomotive protection test projects include diesel engine oil temperature low, diesel engine oil temperature high, diesel engine oil pressure low, diesel engine water temperature high, diesel engine fuel pressure low, and diesel engine rotating speed.

[0062] The HXD3D locomotive protection test projects include main transformer top temperature, main transformer outlet temperature 1, and main transformer outlet temperature 2.

[0063] 1. Rotating speed sensor 14 overspeed protection test

[0064] The power switch of the rotating speed signal generating device 1 is turned on, the internal plug of the rotating speed signal generating device 1 of the detection instrument is connected to the diesel engine rotating speed sensor plug of the HXN5B microcomputer system 3, the rotating speed adjusting knob is adjusted according to the rotating speed instruction given by the rotating speed signal generating device 1, the HXN5B microcomputer system 3 obtains the analog rotating speed signal of the diesel engine drive, the secondary open program is executed, and the locomotive starting success is defaulted, so as to establish the microcomputer reset and protection relationship for the next step test. After the diesel engine rotating speed is established successfully through the locomotive microcomputer IDU display, the diesel engine overspeed protection function is tested.

[0065] When the given diesel engine simulation speed of the rotation speed signal generating device 1 exceeds 1200r / min, the HXN5B microcomputer system 3 starts the protection program, the ECU records the error command and makes background registration, until the human intervention resets, and then the starting can be re-performed.

[0066] 2. Water and oil temperature sensor protection test

[0067] Turn on the power switch of the rotation speed signal generating device 1 and the pressure and temperature signal generating device 2, connect the temperature sensor control plug-in 25 plug inside the pressure and temperature signal generating device 2 to the water and oil sensor plug required to be detected by the HXN5B microcomputer system 3 or the HXD3D microcomputer system 4, adjust the rotation speed command of the rotation speed signal generating device 1, make the microcomputer system obtain the simulation speed signal of the diesel engine drive, thereby performing the secondary opening program and defaulting the locomotive starting success, according to the corresponding test temperature sensor, rotate the temperature adjusting knob to adjust the output signal of the temperature signal setting module 23, change the input microcomputer signal of the measured sensor, and observe the action protection condition of the microcomputer system.

[0068] Through the HXD3D type 0388 locomotive transformer cooling oil temperature simulation test, input 90℃, 100℃, 105℃ simulation signals on the control panel of the pressure and temperature signal generating device 2 respectively, and check the protection condition of the HXD3D microcomputer system 4. During the test, it is found that when the artificial input cooling oil temperature is 90℃, the locomotive reduces the power operation, when the cooling oil temperature is 100℃, the HXD3D microcomputer system 4 blocks the traction, and when the cooling oil temperature is 105℃, the HXD3D microcomputer system 4 executes the protection program to disconnect the main break to protect.

[0069] Each state information in the microcomputer system dialog box needs to be tested one by one.

[0070] 3. Pressure sensor protection test

[0071] Turn on the power switch of the rotation speed signal generating device 1 and the pressure and temperature signal generating device 2, connect the pressure sensor control plug-in 24 plug inside the pressure and temperature signal generating device 2 to the pressure sensor plug required to be detected by the HXN5B microcomputer system 3, and the rotation speed signal generating device 1 continues to output the diesel engine rotation speed pulse to ensure that the HXN5B microcomputer system 3 obtains the simulation speed signal of the diesel engine drive, according to the corresponding test pressure sensor, rotate the pressure adjusting knob to adjust the output signal of the pressure signal setting module 22, change the input microcomputer signal of the measured sensor, and observe the action protection condition of the microcomputer.

[0072] Each state information in the microcomputer system dialog box needs to be tested one by one.

[0073] It should be noted that the above technical solutions of the utility model are described in detail, the principle of the utility model is described, and the above working principle is only used for helping to understand the core idea of the utility model. It should be pointed out that, for ordinary skilled personnel in the technical field, the utility model can be improved and modified without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

[0074] The skilled in the art to which the utility model belongs can make modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the structure of the utility model or exceed the range defined by the claims, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A HXN5B / HXD3D locomotive analog signal generation protection detector, characterized in that, The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine.

2. The HXN5B / HXD3D locomotive analog signal generating protection detector according to claim 1, characterized in that: The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine.

3. The HXN5B / HXD3D locomotive analog signal generating protection detector according to claim 2, characterized in that: The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine. The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine.

4. The HXN5B / HXD3D locomotive analog signal generating protection detector according to claim 2, characterized in that: The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine.

5. The HXN5B / HXD3D locomotive analog signal generating protection detector according to claim 1, characterized in that: The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine.

6. The HXN5B / HXD3D locomotive analog signal generating protection detector according to claim 2, characterized in that: The utility model relates to a signal generating device for testing the action protection function of HXN5B microcomputer system (3) and HXD3D microcomputer system (4) for diesel engine.

7. The HXN5B / HXD3D locomotive analog signal generating protection detector according to claim 3, characterized in that: ​ 8. The HXN5B / HXD3D locomotive analog signal generating protection detector according to claim 3, characterized in that: ​

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