Railway vehicle debugging test system
By designing a rail vehicle commissioning and testing system, the system automatically monitors the working time of the door motor and air conditioning compressor using current and voltage signal acquisition units, solving the problems of large errors and low efficiency in manual timing and achieving high-precision and high-speed commissioning and testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CRRC QINGDAO SIFANG CO LTD
- Filing Date
- 2025-01-21
- Publication Date
- 2026-04-24
AI Technical Summary
In existing technologies, the commissioning and testing of rail vehicles suffer from problems such as large errors and low efficiency in manual timing, especially for experimental items with high precision requirements, which are difficult to meet.
A test system for debugging rail vehicles was designed. A timer is connected to the control unit through a current signal and voltage signal acquisition unit to automatically monitor and record the working time of the door motor and the air conditioning compressor, thereby realizing automatic timing.
It reduces timing errors, improves work efficiency, and can simultaneously time multiple doors or air conditioning systems, saving debugging and testing time.
Smart Images
Figure CN224163750U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail vehicle commissioning technology, and in particular to a rail vehicle commissioning and testing system. Background Technology
[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.
[0003] Every rail vehicle (such as a subway) needs to undergo routine commissioning tests before leaving the factory. These tests include several confirmation items that require time tracking or test data that need to be entered according to specific time standards, such as: door opening and closing time, air conditioning system start-up time, air compressor initial charge time, or air compressor make-up air time.
[0004] In existing technologies, data acquisition for these experimental items involves manually operating the rail vehicle to perform corresponding actions, then using a stopwatch to time and manually record the data. However, manual timing has a large margin of error, especially for some high-precision experimental items (such as the standard door opening time of 3±0.5s), where manual timing often fails to meet the high accuracy requirements. Furthermore, manual timing requires a large number of personnel and is time-consuming; taking a 6-car train as an example, with 8 doors per car and 1 person scheduled for timing per car, a total of 6 people would need to open and close the doors at least 8 times to complete the timing, resulting in low efficiency in debugging and testing. Utility Model Content
[0005] To address the aforementioned issues, this invention proposes a rail vehicle commissioning and testing system that can automatically monitor the time of each test item and automatically upload the timing data.
[0006] According to a first aspect of the present invention, a rail vehicle commissioning and testing system is provided, comprising:
[0007] The data acquisition module includes: multiple current signal acquisition units and multiple voltage signal acquisition units; the current signal acquisition units and voltage signal acquisition units are respectively connected to a control unit, and the control unit is connected to a timer;
[0008] The handheld terminal communicates wirelessly with the data acquisition module.
[0009] And a management terminal, which communicates with the handheld terminal via a network platform.
[0010] As an optional solution, the current signal acquisition unit is connected to the door motor or air conditioning compressor of the rail vehicle to collect the operating current of the door motor or air conditioning compressor.
[0011] As an optional solution, the current signal acquisition unit includes: a current sampling resistor, a current limiting subunit, and a signal amplification subunit; wherein, one end of the current sampling resistor is connected to the door motor or air conditioning compressor, and the other end is grounded, and the output end of the current sampling resistor is connected in series with the current limiting subunit and the signal amplification subunit.
[0012] As an optional solution, the current limiting subunit is a current limiting resistor connected to both ends of the current sampling resistor.
[0013] As an optional solution, the voltage signal acquisition unit is connected to the air compressor operating status feedback line to acquire the air compressor's operating voltage.
[0014] As an optional solution, the voltage signal acquisition unit includes: a voltage sampling subunit, a filtering subunit, an isolation acquisition subunit, and a voltage following subunit connected in series; the voltage sampling subunit is connected to the air compressor operating status feedback line, and the output of the voltage following subunit is connected to the control unit.
[0015] As an optional solution, the timer is a multi-channel timer.
[0016] As an optional solution, the data acquisition module further includes: a wireless communication unit, which is connected to the control unit; the control unit communicates with the handheld terminal through the wireless communication unit.
[0017] As an optional solution, the data acquisition module also includes a display unit and an alarm unit, which are respectively connected to the control unit.
[0018] As an optional solution, the data acquisition module also includes an interface for connecting to an onboard Ethernet switch or vehicle bus MVB on the rail vehicle.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] (1) The rail vehicle debugging and testing system of this utility model connects the current signal acquisition unit in the data acquisition module to the door motor or air conditioning compressor of the rail vehicle. When the door is opened or closed, the current signal acquisition unit can acquire the corresponding signal and transmit it to the control unit. After receiving the current signal, the control unit triggers the timer to start timing. When no current signal is detected, it means that the door motor stops working. At this time, the timer is triggered to stop timing, so that the opening or closing time of the door can be accurately and automatically recorded.
[0021] The start-up time of an air conditioning system refers to the time from when the air conditioning system receives a start command to when the air conditioning compressor starts working. The start-up time of an air conditioning system can be determined by monitoring the time difference between when the start command is issued and when the air conditioning compressor is detected to have current.
[0022] Similarly, the voltage signal acquisition unit is connected to the air compressor's operating status feedback line. When the air compressor is working, the voltage can be detected on its status feedback line and transmitted to the control unit. After receiving the voltage signal, the control unit triggers the timer to start timing. When no voltage signal is detected, it means that the air compressor has stopped working. At this time, the timer is triggered to stop timing, which can accurately and automatically record the working time of the air compressor. Thus, the initial air charging time and the air replenishment time of the air compressor can be timed.
[0023] The above method can accurately obtain the time data for each experimental item, eliminating the need for manual timing, reducing timing errors, and improving work efficiency.
[0024] (2) This utility model can simultaneously time the opening actions of multiple doors, allowing operators to control all doors to open at the same time. The data acquisition module can time the opening time of each door separately, avoiding repetitive operations by the operator. It also has the same effect on door closing time, air conditioning start-up time, air compressor initial charge time, and air compressor make-up air time, greatly saving the time required for rail vehicle commissioning and testing.
[0025] Advantages of the present invention in additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the rail vehicle commissioning and testing system in this embodiment of the present invention;
[0027] Figure 2 This is a schematic diagram of the current signal acquisition unit in an embodiment of this utility model;
[0028] Figure 3 This is a schematic diagram of the voltage signal acquisition unit in an embodiment of the present invention;
[0029] Figure 4 This is a schematic diagram showing the connection between the data acquisition module and the vehicle bus MVB in an embodiment of this utility model. Detailed Implementation
[0030] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used in this utility model have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0031] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application.
[0032] Example 1
[0033] In one or more embodiments, a rail vehicle commissioning and testing system is disclosed, combined with Figure 1 Specifically, it includes:
[0034] The data acquisition module includes multiple current signal acquisition units and multiple voltage signal acquisition units; the current signal acquisition units and voltage signal acquisition units are respectively connected to the control unit, and the control unit is connected to a timer;
[0035] The handheld terminal communicates wirelessly with the data acquisition module.
[0036] And a management terminal, which communicates with the handheld terminal via a network platform.
[0037] In this embodiment, the current signal acquisition unit is connected to the door motor or air conditioning compressor of the rail vehicle to collect the operating current of the door motor or air conditioning compressor. Each door motor or air conditioning compressor is connected to a current signal acquisition unit; when the current signal acquisition unit detects current in the door motor connected to it, it indicates that the door motor is activated, that is, the door is opening or closing. At this time, the control unit can trigger the timer to start timing, thereby obtaining the door opening time or door closing time.
[0038] The start-up time of an air conditioning system refers to the time from when the air conditioning system receives a start command to when the air conditioning compressor starts working. The start-up time of an air conditioning system can be determined by monitoring the time difference between when the start command is issued and when the air conditioning compressor is detected to have current.
[0039] As a specific example, combined with Figure 2 The current signal acquisition unit includes a current sampling resistor, a current limiting subunit, and a signal amplification subunit. One end of the current sampling resistor is connected to the door motor or air conditioning compressor, and the other end is grounded. The output of the current sampling resistor is connected in series with the current limiting subunit and the signal amplification subunit. The current limiting subunit consists of current-limiting resistors connected to both ends of the current sampling resistor, and the signal amplification subunit is an operational amplifier. The current sampling resistor R... C The current limiting resistors R1 and R2 of the current limiting subunit are used to limit the current signal collected by the current sampling resistor so that the current meets the input requirements of the signal amplification subunit. The signal amplification subunit is used to amplify the sampled signal and input it to the control unit.
[0040] The voltage signal acquisition unit is connected to the air compressor's operating status feedback line to acquire the air compressor's operating voltage. When the air compressor is running normally, the voltage signal acquisition unit can detect the voltage value (generally DC 110V). At this time, the control unit can trigger the timer to start timing, thereby obtaining the air compressor's running time.
[0041] As a specific example, combined with Figure 3 The voltage signal acquisition unit includes a voltage sampling subunit, a filtering subunit, an isolation acquisition subunit, and a voltage follower subunit connected in series. The voltage sampling subunit is connected to the air compressor operating status feedback line, and the output of the voltage follower subunit is connected to the control unit. The voltage sampling subunit, connected to the air compressor operating status feedback line, is used to sample the air compressor operating status feedback voltage. The filtering subunit filters the sampled voltage, the isolation acquisition subunit isolates the filtered voltage, and the voltage follower subunit uses an operational amplifier with a gain of 1 to convert the isolated signal output from the isolation acquisition subunit into a signal that can be acquired by the control unit. The isolation acquisition subunit and the voltage follower subunit ensure accurate acquisition of the air compressor operating status feedback voltage, avoiding the influence of other voltages on the acquisition results. All of the above-mentioned voltage sampling subunit, filtering subunit, isolation acquisition subunit, and voltage follower subunit are implemented using existing components.
[0042] The current acquisition unit and voltage acquisition unit in this embodiment can be connected to the control unit via wired or wireless means, which can be selected according to actual needs.
[0043] It should be noted that the timer used in this embodiment is a multi-channel timer, such as an 8-channel timer of the ETR-RJM-HD model. Each test task corresponds to one timer, for example, each door opening or closing task corresponds to one timer. The number of multi-channel timers can be configured according to actual needs. The triggering process of the control unit for the timer is a relatively mature technology in the prior art, so it will not be described in detail.
[0044] In this embodiment, the handheld terminal and the data acquisition module communicate wirelessly. The handheld terminal pre-stores a list of various test tasks. After the operator selects a test task, the handheld terminal sends the corresponding test task instruction to the control unit in the data acquisition module. The control unit can then detect the corresponding task time. For example:
[0045] If a door opening time test is required, the staff will select the door opening time test task and send it to the control unit; then the operator will control all the doors of the rail vehicle to open; after receiving the door opening time test task, the control unit will obtain the current detection signal from the current signal acquisition unit connected to each door motor, and trigger the corresponding multi-channel timer to time the opening time of each door; the control unit will upload the opening time of each door to the handheld terminal.
[0046] Therefore, operators can open all doors simultaneously at once. The debugging and testing system of this embodiment can simultaneously time and record the opening time of all doors of the rail vehicle, avoiding a lot of repetitive work and improving testing efficiency.
[0047] The process for testing the door closing time and the air conditioning start-up time is the same as described above, and will not be repeated here.
[0048] Similarly, if an air compressor initial charge time test or an air compressor make-up air time test is required, the operator will select the air compressor initial charge time test or air compressor make-up air time test task and send it to the control unit; then the operator will control the air compressor to perform the initial charge or make-up air action; after receiving the test task, the control unit will acquire the voltage detection signal of the voltage signal acquisition unit connected to the operating status feedback line of each air compressor, and trigger the corresponding multi-channel timer to time the action time of each air compressor; the control unit will upload the action time of each air compressor to the handheld terminal.
[0049] In this embodiment, the handheld terminal can be a PAD, a mobile phone, or other terminal products with display and triggering functions, and a list of test tasks is pre-configured internally; alternatively, the list of test tasks can also be configured on the management terminal.
[0050] The control unit in this embodiment can be implemented using an existing STM32 series microcontroller. The process of the microcontroller receiving the test task instructions from the handheld terminal and obtaining the corresponding data according to the instructions is easily implemented by existing technology and does not involve any improvement to the software program.
[0051] It should be noted that the improvements of this utility model lie in the overall system architecture design and the position and connection relationship of each module, and do not involve improvements to the software product; the software functions of the handheld terminal, management terminal and control unit are easily implemented by those skilled in the art using existing technology.
[0052] In this embodiment, the handheld terminal communicates with the management terminal via a network platform. The management terminal can configure various task lists and store them on the network platform, while the handheld terminal can download task lists from the network platform. Simultaneously, relevant data obtained from testing experiments is also stored on the network platform for the management terminal to access and display.
[0053] The network platform includes servers and a database for data transmission and storage, utilizing existing technologies. It also includes a wireless communication unit that communicates with the handheld terminal and management terminal via a wireless communication network. In this embodiment, the wireless communication method can be Wi-Fi, Bluetooth, 4G, or 5G networks, etc.
[0054] As an optional implementation, the data acquisition module also includes a display unit and an alarm unit, both of which are connected to the control unit. The display unit is used to display the timing of the timer, and the alarm unit can sound an alarm when an abnormal situation occurs. For example, when detecting the door opening time, if a certain door motor does not detect a current signal, then the door may be uncontrolled to open or have an opening failure. In this case, the alarm unit is controlled to sound an alarm, and the display unit is controlled to display which door has an abnormality.
[0055] As an optional implementation, the data acquisition module also includes an interface for connecting to an onboard Ethernet switch or the vehicle's MVB bus on the rail vehicle. For example... Figure 4 A schematic diagram showing the connection between the data acquisition module and the vehicle bus MVB is provided. The control unit can connect to the on-board Ethernet switch or the vehicle bus MVB via an interface. Through the Ethernet switch or the vehicle bus MVB, the control unit can directly acquire the action data of all doors, air conditioners, or air compressors on the rail vehicle. In this case, it is no longer necessary to collect current and voltage signals through current signal acquisition units and voltage signal acquisition units to trigger the timer; the control unit can directly acquire the action data to trigger the timer for timing.
[0056] It should be noted that the testing principles and processes for test items such as door opening or closing, air conditioning turning on, and initial air charging and replenishment of air compressors are well known to those skilled in the art. The system in this embodiment realizes automatic timing for each test item, eliminating the tediousness of manual timing and improving testing efficiency.
[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.
Claims
1. A testing and commissioning system for rail vehicles, characterized in that, include: The data acquisition module includes: multiple current signal acquisition units and multiple voltage signal acquisition units; the current signal acquisition units and voltage signal acquisition units are respectively connected to a control unit, and the control unit is connected to a timer; The handheld terminal communicates wirelessly with the data acquisition module. And a management terminal, which communicates with the handheld terminal via a network platform.
2. The rail vehicle commissioning and testing system as described in claim 1, characterized in that, The current signal acquisition unit is connected to the door motor or air conditioning compressor of the rail vehicle and is used to acquire the operating current of the door motor or air conditioning compressor.
3. The rail vehicle commissioning and testing system as described in claim 2, characterized in that, The current signal acquisition unit includes a current sampling resistor, a current limiting subunit, and a signal amplification subunit; wherein, one end of the current sampling resistor is connected to the door motor or air conditioning compressor, and the other end is grounded, and the output end of the current sampling resistor is connected in series with the current limiting subunit and the signal amplification subunit.
4. The rail vehicle commissioning and testing system as described in claim 3, characterized in that, The current-limiting subunit consists of current-limiting resistors connected to both ends of the current sampling resistor.
5. The rail vehicle commissioning and testing system as described in claim 1, characterized in that, The voltage signal acquisition unit is connected to the air compressor operating status feedback line and is used to acquire the operating voltage of the air compressor.
6. The rail vehicle commissioning and testing system as described in claim 5, characterized in that, The voltage signal acquisition unit includes: a voltage sampling subunit, a filtering subunit, an isolation acquisition subunit, and a voltage following subunit connected in series; the voltage sampling subunit is connected to the air compressor operating status feedback line, and the output of the voltage following subunit is connected to the control unit.
7. The rail vehicle commissioning and testing system as described in claim 1, characterized in that, The timer is a multi-channel timer.
8. The rail vehicle commissioning and testing system as described in claim 1, characterized in that, The data acquisition module further includes a wireless communication unit, which is connected to the control unit; the control unit communicates with the handheld terminal through the wireless communication unit.
9. The rail vehicle commissioning and testing system as described in claim 1, characterized in that, The data acquisition module also includes a display unit and an alarm unit, which are respectively connected to the control unit.
10. A rail vehicle commissioning and testing system as described in claim 1, characterized in that, The data acquisition module also includes an interface for connecting to the onboard Ethernet switch or vehicle bus MVB on the rail vehicle.