Railway passenger car electric water heater control panel testing device and system
The railway passenger car electric water heater control board testing device utilizes analog signal input and feedback to achieve accurate testing of the control board, solving the problem of cumbersome disassembly and assembly processes in existing technologies, improving testing efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIU ZHOU LOCOMOTIVE & ROLLING STOCK FACTORY
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-26
AI Technical Summary
In the existing technology, the testing of the control board of electric water heaters requires fault diagnosis and functional testing on the whole machine, which leads to a cumbersome process of repeated disassembly and assembly, long disassembly and assembly cycle, high user costs, and reduced testing efficiency.
A testing device for the control board of an electric water heater in a railway passenger car is provided, comprising a housing, a human-machine interface module, a PLC control module, a signal output module, a signal acquisition module, and a signal conversion module. Through analog signal input and feedback, the device enables performance testing of the control board, accurate fault diagnosis, and targeted repair.
This improved the efficiency of performance testing for the electric water heater control board, reduced maintenance costs, and avoided subsequent repair expenses due to quality issues.
Smart Images
Figure CN224417203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of control board testing technology, and in particular to a test device and system for the control board of an electric water heater for railway passenger cars. Background Technology
[0002] Electric water heaters are an important component of railway passenger cars, and the control board is the core component of the electric water heater. It is the control unit of the electric water heater. By collecting the water level information of the electric water heater, it controls the water inlet of the electric water heater and controls the contactor to operate and heat the water heater. It is directly related to the normal operation of the electric water heater.
[0003] Currently, testing of electric water heater control boards primarily involves fault diagnosis and functional testing on the entire unit. If a control board malfunctions, it needs to be removed from the unit, repaired, and then reinstalled for functional testing. This process of fault diagnosis and post-repair functional testing is cumbersome, involves repeated disassembly and reassembly, has a long testing cycle, high user costs, and reduces the efficiency of performance testing for electric water heater control boards. Utility Model Content
[0004] To solve the above-mentioned technical problems, or at least partially solve them, this utility model provides a testing device and system for the control board of an electric water heater in a railway passenger car, which is beneficial to improving the efficiency of performance testing of the control board of the electric water heater and reducing costs.
[0005] In a first aspect, this utility model provides a testing device for the control board of an electric water heater in a railway passenger car, comprising:
[0006] The enclosure, human-machine interface module, PLC control module, signal output module, signal acquisition module, and signal conversion module;
[0007] The enclosure includes an operation panel, on which the human-machine interface module is mounted; the PLC control module, the signal output module, the signal acquisition module, and the signal conversion module are located inside the enclosure; the PLC control module is connected to the human-machine interface module, the signal output module, and the signal acquisition module respectively.
[0008] The PLC control module is used to output analog signals, which are transmitted to the signal input terminal of the control board under test through the signal output module. The performance feedback output terminal of the control board under test is connected to the signal acquisition module through the signal conversion module.
[0009] In some embodiments, the human-computer interaction module is configured as a touch display panel.
[0010] In some embodiments, the railway passenger car electric water heater control board testing device further includes:
[0011] The power supply module is located inside the enclosure and is connected to the PLC control module.
[0012] In some embodiments, a power button is provided on the operation panel.
[0013] In some embodiments, the railway passenger car electric water heater control board testing device further includes:
[0014] The first test line and the second test line; the signal output module is connected to the signal input terminal of the control board under test through the first test line, and the signal conversion module is connected to the performance feedback output terminal of the control board under test through the second test line.
[0015] In some embodiments, the PLC control module includes a signal analog element, which is used to output analog signals to the signal output module.
[0016] In some embodiments, the operation panel is provided with a power indicator light.
[0017] Secondly, this utility model also provides a test system for the control board of an electric water heater for railway passenger cars, including the test device for the control board of an electric water heater for railway passenger cars as described in the first aspect.
[0018] In some embodiments, the railway passenger car electric water heater control board testing system further includes:
[0019] Oscilloscope; the oscilloscope is connected to the test device for the control board under test and the control board of the railway passenger car electric water heater.
[0020] In some embodiments, the control panel of the enclosure is provided with wiring terminals for connecting the oscilloscope.
[0021] The technical solution provided by this utility model has the following advantages compared with the prior art:
[0022] The railway passenger car electric water heater control board testing device provided in this embodiment allows users to test the control board's performance by inputting commands through a human-machine interface module after connecting the control board to be tested. By testing the various actions of the control board, faulty boards can be accurately identified, facilitating targeted repairs. Early detection of control board problems helps avoid later maintenance costs due to quality issues. Therefore, the railway passenger car electric water heater control board testing device provided in this embodiment improves the efficiency of performance testing of electric water heater control boards and reduces costs. Attached Figure Description
[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 A schematic diagram of the structure of a test device for a control board of an electric water heater in a railway passenger car, provided for an embodiment of this utility model;
[0026] Figure 2 A schematic diagram illustrating the working principle of a test device for a control board of an electric water heater in a railway passenger car, provided in an embodiment of this utility model;
[0027] Figure 3 A schematic diagram illustrating the working principle of another railway passenger car electric water heater control board testing device provided in this embodiment of the utility model;
[0028] Figure 4 This is a schematic diagram of the structure of a test system for a control board of an electric water heater in a railway passenger car, provided in an embodiment of this disclosure.
[0029] Among them, 010 is the test device for the control board of the electric water heater for railway passenger cars; 10 is the human-machine interaction module; 11 is the PLC control module; 111 is the signal simulation element; 12 is the signal output module; 13 is the control board to be tested; 14 is the signal acquisition module; 15 is the signal conversion module; 16 is the power supply module; 17 is the enclosure; 18 is the operation panel; 19 is the power button; 20 is the power indicator light; 21 is the terminal block; 22 is the oscilloscope; 23 is the first test lead; and 24 is the second test lead. Detailed Implementation
[0030] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.
[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.
[0032] The railway passenger car electric water heater control board testing device provided in this embodiment allows users to test the control board's performance by inputting commands through a human-machine interface module after connecting the control board to be tested. By testing the various actions of the control board, faulty boards can be accurately identified, facilitating targeted repairs. Early detection of control board problems helps avoid later maintenance costs due to quality issues. Therefore, the railway passenger car electric water heater control board testing device provided in this embodiment improves the efficiency of performance testing of electric water heater control boards and reduces costs.
[0033] The following description, in conjunction with the accompanying drawings, provides an exemplary description of the railway passenger car electric water heater control board testing device and system provided in this embodiment of the utility model.
[0034] Figure 1 This is a schematic diagram of the structure of a test device for a control board of an electric water heater in a railway passenger car, provided in an embodiment of this utility model. Figure 2 A schematic diagram illustrating the working principle of a test device for a control board of an electric water heater in a railway passenger car, provided in an embodiment of this utility model.
[0035] like Figure 1 and Figure 2As shown, the railway passenger car electric water heater control board testing device 010 includes: a housing 17, a human-machine interface module 10, a PLC control module 11, a signal output module 12, a signal acquisition module 14, and a signal conversion module 15; the housing 17 includes an operation panel 18, and the human-machine interface module 10 is disposed on the operation panel 18; the PLC control module 11, the signal output module 12, the signal acquisition module 14, and the signal conversion module 15 are located inside the housing 17; the PLC control module 11 is connected to the human-machine interface module 10, the signal output module 12, and the signal acquisition module 14 respectively; the PLC control module 11 is used to output analog signals, and the analog signals are transmitted to the signal input terminal A1 of the control board 13 under test through the signal output module 12; the performance feedback output terminal B2 of the control board 13 under test is connected to the signal acquisition module 14 through the signal conversion module 15.
[0036] Among them, the control board 13 to be tested is the control element of the electric water heater. Before the control board 13 to be tested is used, the railway passenger car electric water heater control board testing device 010 provided in this embodiment can be used to test the function of the control board 13 to be tested and verify whether the control board 13 to be tested is a qualified product.
[0037] The PLC control module 11 can output analog signals, which are then output to the control board 13 under test via the signal output module 12. For example, the analog signal can be an over-temperature signal. When the signal input terminal A1 of the control board 13 under test receives this over-temperature signal, the control board 13 determines to perform an over-temperature protection action based on the signal. Correspondingly, the control board 13 sends a corresponding control signal to perform the over-temperature protection action. This control signal can be output to the signal conversion module 15 via the performance feedback output terminal of the control board 13 under test. The signal conversion module 15 converts the received control signal (electrical signal) into an analog signal and transmits it to the PLC control module 11 via the signal acquisition module 14. The PLC control module 11 determines whether the control board 13 under test has performed an over-temperature protection action based on the received signal, thereby obtaining the performance test result of the control board 13 under test and displaying the test result through the human-machine interface module 10 (touch display panel).
[0038] For example, the analog signal can be a low water level signal. When the signal input terminal of the control board 13 under test receives the low water level signal, the control board 13 under test determines to cut off the heating power and trigger an alarm action based on the low water level signal. Correspondingly, the control board 13 under test sends a corresponding control signal to cut off the heating power and trigger an alarm action. This control signal can be output to the signal conversion module 15 through the performance feedback output terminal of the control board 13 under test, and transmitted to the PLC control module 11 through the signal acquisition module 14. The PLC control module 11 can determine whether the control board 13 under test has cut off the heating power and triggered an alarm action based on the received signal, thereby obtaining the performance test result of the control board 13 under test, and displaying the test result through the human-machine interaction module 10 (touch display panel).
[0039] Therefore, the PLC control module 11 can test the water level detection, fault indication, status indication and other functions of the control board by outputting different analog signals.
[0040] In related technologies, testing of the control board of an electric water heater mainly involves fault diagnosis and functional testing on the entire unit. If the control board malfunctions, it needs to be removed from the unit, repaired, and then reinstalled for functional testing. This process of fault diagnosis and post-repair functional testing involves cumbersome disassembly and reassembly, resulting in a long testing cycle, high user costs, and reduced efficiency in performance testing of the electric water heater control board.
[0041] Compared to related technologies, the railway passenger car electric water heater control board testing device provided in this disclosure allows users to test the control board's performance by inputting commands through a human-machine interface module after connecting the control board to be tested. By testing the various actions of the control board, faulty functions within the board can be accurately identified, facilitating targeted repairs. Early detection and repair of control board problems helps avoid high maintenance costs later due to board quality issues. Therefore, the railway passenger car electric water heater control board testing device provided in this disclosure improves the efficiency of performance testing of electric water heater control boards and reduces costs.
[0042] In some embodiments, such as Figure 1 As shown, the human-computer interaction module 10 is configured as a touch display panel. This facilitates user operation and allows for the visualization of test results, making it easier for users to obtain the test results.
[0043] In some embodiments, Figure 3A schematic diagram illustrating the working principle of another railway passenger car electric water heater control board testing device provided in this embodiment of the utility model. Figure 3 As shown, the railway passenger car electric water heater control board testing device 010 also includes a power module 16 located inside the housing 17, which is connected to the PLC control module 11. This allows for power supply to the PLC control module 11.
[0044] In some embodiments, such as Figure 1 As shown, a power button 19 is provided on the operation panel 18. Specifically, when it is necessary to test the control board 13 to be tested, after the control board 13 to be tested is connected to the railway passenger car electric water heater control board test device 010, the user can press the power button 19 to turn on the railway passenger car electric water heater control board test device 010.
[0045] In some embodiments, such as Figure 2 or Figure 3 As shown, the railway passenger car electric water heater control board test device 010 also includes:
[0046] First test line 23 and second test line 24; the signal output module 12 is connected to the signal input terminal A1 of the control board 13 under test through the first test line 23, and the signal conversion module 15 is connected to the performance feedback output terminal A2 of the control board 13 under test through the second test line 24.
[0047] Thus, signal transmission between the railway passenger car electric water heater control board test device 010 and the control board 13 under test is achieved through the first test line 23 and the second test line 24.
[0048] In some embodiments, the PLC control module 11 includes a signal simulation element 111, which outputs analog signals to the signal output module 12. Thus, by outputting analog signals through the signal simulation element 111, various performance characteristics of the control board 13 under test can be tested.
[0049] In some embodiments, a power indicator light 20 is provided on the operation panel 18. Specifically, the power indicator light 20 is provided to prompt the user after the user presses the power button 19 and the railway passenger car electric water heater control board testing device 010 is turned on normally. If the power indicator light 20 is lit, it indicates that the railway passenger car electric water heater control board testing device 010 is turned on normally; if the power indicator light 20 is not lit, it indicates that the railway passenger car electric water heater control board testing device 010 cannot be turned on.
[0050] Based on the above embodiments, this disclosure also provides a railway passenger car electric water heater control board testing system, including the railway passenger car electric water heater control board testing device as described in the above embodiments, and therefore has the same or similar beneficial effects, which will not be repeated here.
[0051] In some embodiments, Figure 4 This is a schematic diagram of a test system for a control board of an electric water heater in a railway passenger car, provided as an embodiment of this disclosure. Figure 4 As shown, the railway passenger car electric water heater control board test system also includes:
[0052] Oscilloscope 22; the oscilloscope 22 is connected to the control board 13 to be tested and the test device 010 for the control board of the railway passenger car electric water heater.
[0053] Specifically, an oscilloscope 22 is set up to measure the electrical signal waveform output by the control board 13 under test, thereby confirming the signal quality of circuits such as heating control and avoiding misjudgment of the performance of the control board 13 under test due to waveform distortion.
[0054] In some embodiments, combined with Figure 1 and Figure 4 The control panel 18 of the housing 17 is provided with a terminal block 21, which is used to connect to the oscilloscope 22.
[0055] The terminal block 21 includes a positive terminal block and a negative terminal block. The positive terminal block is used to connect to the positive terminal of the oscilloscope 22, and the negative terminal block is used to connect to the negative terminal of the oscilloscope 22.
[0056] The terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0057] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this utility model is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the aforementioned inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features of the utility model in this utility model that have similar functions.
Claims
1. A testing device for a control board of an electric water heater in a railway passenger car, characterized in that, include: The enclosure, human-machine interface module, PLC control module, signal output module, signal acquisition module, and signal conversion module; The enclosure includes an operation panel, on which the human-machine interface module is mounted; the PLC control module, the signal output module, the signal acquisition module, and the signal conversion module are located inside the enclosure; the PLC control module is connected to the human-machine interface module, the signal output module, and the signal acquisition module respectively. The PLC control module is used to output analog signals, which are transmitted to the signal input terminal of the control board under test through the signal output module. The performance feedback output terminal of the control board under test is connected to the signal acquisition module through the signal conversion module.
2. The test device for the control board of the electric water heater in a railway passenger car according to claim 1, characterized in that, The human-computer interaction module is set as a touch display panel.
3. The test device for the control board of the electric water heater in a railway passenger car according to claim 1, characterized in that, Also includes: The power supply module is located inside the enclosure and is connected to the PLC control module.
4. The test device for the control board of the electric water heater in a railway passenger car according to claim 3, characterized in that, The control panel is equipped with a power button.
5. The testing device for the control board of the electric water heater in a railway passenger car according to claim 1, characterized in that, Also includes: The first test line and the second test line; the signal output module is connected to the signal input terminal of the control board under test through the first test line, and the signal conversion module is connected to the performance feedback output terminal of the control board under test through the second test line.
6. The testing device for the control board of the electric water heater in a railway passenger car according to claim 1, characterized in that, The PLC control module includes a signal simulation element, which is used to output analog signals to the signal output module.
7. The testing device for the control board of the electric water heater in a railway passenger car according to claim 1, characterized in that, The control panel is equipped with a power indicator light.
8. A testing system for a control board of an electric water heater in a railway passenger car, characterized in that, The test device for the control board of the electric water heater for railway passenger cars as described in any one of claims 1-7.
9. The railway passenger car electric water heater control board testing system according to claim 8, characterized in that, Also includes: Oscilloscope; the oscilloscope is connected to the test device for the control board under test and the control board of the railway passenger car electric water heater.
10. The test system for the control board of the electric water heater in a railway passenger car according to claim 9, characterized in that, The control panel of the enclosure is equipped with wiring terminals, which are used to connect the oscilloscope.