LKJ output signal and function expansion box testing device

Abstract

The utility model discloses an LKJ output signal and function expansion box testing device, relates to the technical field of locomotive equipment detection, and aims to solve the problem of low testing efficiency of the conventional signal testing device, and the LKJ output signal and function expansion box testing device can simultaneously detect the on-off conditions of a plurality of signals, improve the detection efficiency and save manpower and material resources. The LKJ common and emergency braking output signal inspection device can detect signal quality and judge whether the signals are stable or not and whether the signals meet the required conditions or not. The device is a portable device, and is small in size, light in weight and convenient to carry and operate. According to the utility model, the occupied space of the equipment and the limitation of use conditions are reduced, the equipment can be tested in an environment where the equipment is installed on the locomotive and can also be tested under the locomotive, the limitation of an operator on an operation site is broken through, and the equipment is more portable and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of locomotive equipment detection, in particular to a LKJ output signal and function expansion box testing device. Background Art

[0002] The LKJ train operation monitoring system device involves the safety monitoring of train operation, ensuring that the train runs at the specified speed and signal control to ensure the safety of railway transportation. LKJ output signals include: common and emergency brake output signals, mainly common brake unloading, pressure reduction, air shut-off, emergency brake exhaust and other functions. The LKJ function expansion box is used to expand the 110V channel and standardize the unified interface of the new functions of the monitoring device. Connect the whistle converter, expand the input reservation, the train operation status information system on-board equipment, etc. When the output signal or extended function fails, it is necessary to quickly check whether the system is working properly and then locate the fault. However, the existing testing method can only judge the on-off status of the signal as a whole, and cannot judge whether there is a problem with the cable. Utility Model Content

[0003] The purpose of the utility model is to propose a LKJ output signal and function expansion box testing device in view of the fact that the existing testing method can only judge the on-off status of the signal as a whole but cannot locate whether the cable has problems.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] An LKJ output signal and function expansion box testing device, comprising: a main control module, a voltage acquisition module and a cable connectivity testing module;

[0006] The cable connectivity test module includes a sensing pen and a test unit, wherein the test unit includes a coil, a capacitor and a light emitting diode, and the coil, the capacitor and the light emitting diode are connected in parallel;

[0007] The output end of the cable connectivity test module is connected to the input end of the main control module, and the output end of the voltage acquisition module is connected to the input end of the main control module.

[0008] Furthermore, the device also includes a human-computer interaction module, which is connected to the main control module.

[0009] Furthermore, the device also includes a display module, and the display module is connected to the main control module.

[0010] Furthermore, the device also includes a wireless module, and the output end of the main control module is connected to the input end of the wireless module.

[0011] Furthermore, the device also includes a power supply module, and the output end of the power supply module is respectively connected to the input ends of the main control module, the human-computer interaction module, the display module and the wireless module.

[0012] Furthermore, the main control module adopts the GD32F103RCT6 chip.

[0013] Furthermore, the voltage acquisition module includes a CL1680 chip and a voltage comparator LM339DR.

[0014] Furthermore, the device also includes a clock module.

[0015] The beneficial effects of the utility model are:

[0016] The utility model can quickly detect the on-off status of the signal, and can determine the specific on-off status of the cable through the cable connectivity test module, thereby improving the detection efficiency and saving manpower and material resources. The LKJ common and emergency brake output signal inspection device of the utility model can detect the signal quality, determine whether the signal is stable and whether it meets the required conditions. This device is a portable device with a small size, light weight, and is easy to carry and operate. It reduces the limitations of the space occupied by the equipment and the conditions of use. It can be tested in an environment where the equipment has been installed on the locomotive, and it can also be tested under the vehicle, breaking the operator's restrictions on the operation location, making it more portable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the device structure of this application;

[0018] Figure 2 is a signal processing flow chart;

[0019] Figure 3 This is the structural diagram of this application;

[0020] Figure 4 This is the structural block diagram of the sensor pen;

[0021] Figure 5 Schematic diagram of the system power supply module. DETAILED DESCRIPTION

[0022] It should be particularly noted that, in the absence of conflict, the various embodiments disclosed in this application can be combined with each other.

[0023] Specific implementation method 1: refer to Figure 1 Specifically describing this embodiment, a LKJ output signal and function expansion box test device of this embodiment includes: a main control module, a voltage acquisition module and a cable connectivity test module;

[0024] The cable connectivity test module includes a sensing pen and a test unit, wherein the test unit includes a coil, a capacitor and a light emitting diode, and the coil, the capacitor and the light emitting diode are connected in parallel;

[0025] The output end of the cable connectivity test module is connected to the input end of the main control module, and the output end of the voltage acquisition module is connected to the input end of the main control module.

[0026] Main control module: uses GD32F103RCT6 chip to perform the core processing of the entire device, mainly completes the test of the entire test device, allocates the functions and processing of each module, and transmits the received information to the display module.

[0027] Voltage acquisition module: converts the external input signal into a voltage of 0-10V through a voltage divider resistor, then samples it through the CL1680 chip, and then compares it through the voltage comparator LM339DR to determine the signal size and quality;

[0028] Cable connectivity test module: The AC220V voltage converted by the power supply module is input to the cable under test through the connector, and then the cable breakpoints are found using a test pen.

[0029] Specific implementation method 2: This implementation method is a further description of specific implementation method 1. The difference between this implementation method and specific implementation method 1 is that the device further includes a human-computer interaction module, and the human-computer interaction module is connected to the main control module.

[0030] The human-computer interaction module is mainly divided into the human-computer interaction control part used to control the equipment to work;

[0031] Specific implementation method three: This implementation method is a further description of specific implementation method two. The difference between this implementation method and specific implementation method two is that the device further includes a display module, and the display module is connected to the main control module.

[0032] The display module is mainly used for signal detection and display of test data results.

[0033] Specific implementation method 4: This implementation method is a further description of specific implementation method 3. The difference between this implementation method and specific implementation method 3 is that the device further includes a wireless module, and the output end of the main control module is connected to the input end of the wireless module.

[0034] The wireless module mainly uploads the test results to the remote server through wireless methods (including but not limited to 5G, 4G, WiFi, LoRa, etc.) to facilitate data storage and retrieval.

[0035] Specific implementation mode five: This implementation mode is a further explanation of specific implementation mode four. The difference between this implementation mode and specific implementation mode four is that the device also includes a power supply module, and the output end of the power supply module is respectively connected to the input end of the main control module, the human-computer interaction module, the display module and the wireless module.

[0036] Power supply module: It is mainly divided into two power supplies: one converts the input DC110V into DC12V through UWTH1D12QB-50WR3S, then converts it into DC5V through SCT2360FPBR, and converts it into DC3.3V through SGM2028-ADJ, and then supplies 5V and 3.3V to various system modules for power supply; the other converts the input DC110V into AC220V through an inverter for cable testing and breakpoint detection.

[0037] Specific implementation method 6: This implementation method is a further explanation of the specific implementation method 1. The difference between this implementation method and the specific implementation method 1 is that the main control module adopts the GD32F103RCT6 chip.

[0038] Specific implementation method 7: This implementation method is a further description of specific implementation method 1. The difference between this implementation method and specific implementation method 1 is that the voltage acquisition module includes a CL1680 chip and a voltage comparator LM339DR.

[0039] Specific implementation example eight: This implementation example is a further description of specific implementation example one. The difference between this implementation example and specific implementation example one is that the device further includes a clock module.

[0040] Clock module: The core processing module is used for command control, and then the SD2506API chip is used as the built-in real-time clock. The clock module outputs the time and can be synchronized through satellites (including but not limited to China's Beidou, the United States GPS, Russia's GLONASS, Europe's Galileo, etc.) to ensure the stability of the system time.

[0041] Example:

[0042] like Figure 3 As shown, the device of the present application includes a test module and a sensing pen. The working logic is as follows:

[0043] Turn on the device and connect it to the LKJ output signal terminal or LKJ function expansion box;

[0044] When the device is connected, it is controlled through the human-computer interaction module, and one of the LKJ output signals or the LKJ function expansion box is selected for testing;

[0045] Select the single or multiple input signals that need to be detected, and detect the line continuity by controlling the main control module;

[0046] Cable connectivity test: Test the cable under test and observe the cable connection status displayed on the display module: If the main control module detects a signal, the cable connection is normal and the signal voltage is detected; if the main control module does not detect a signal, the display module shows that the cable connection is abnormal, and a test pen can be used to test the cable breakpoint. The test method is: determine the abnormal cable through the display module, connect one end of the cable to the test equipment, and leave the other end hanging. Then control the test equipment to output 220VAC AC through the human-computer interaction module, output the voltage to the cable, and then bring the test pen close to the cable under test. At this time, the charge flowing in the cable will generate an induced current in the coil of the test pen, which will flow through the capacitor to charge and increase the voltage. When the voltage exceeds the turn-on voltage of the light-emitting diode, the diode will light up, proving that the cable connection at this position is normal. Continue to move the test pen along the direction of the cable until the diode goes out. The place where the indicator light changes is the cable breakpoint (the error is about ±15cm). After the test is completed, touch the tip of the test pen to the locomotive body for about a few seconds to fully discharge the test pen, and then turn it off.

[0047] Voltage accuracy test: After the cable connectivity is normal, perform a voltage test, input the current locomotive voltage through the human-machine interface, and compare the voltage through the digital-to-analog converter and operational amplifier. If the voltage is within the locomotive input range, the voltage detection is considered correct and the result is displayed on the display unit module; if the main control module voltage detection is abnormal, the display module will display the voltage detection abnormality and notify the relevant staff to handle it before subsequent operations can be performed.

[0048] It should be noted that the specific implementation method is only an explanation and description of the technical solution of the utility model, and cannot be used to limit the scope of protection of the rights. Any partial changes made according to the claims and description of the utility model should still fall within the scope of protection of the utility model.

Claims

1. A LKJ output signal and function expansion box test device, characterized in that include: Main control module, voltage acquisition module and cable connectivity test module; The cable connectivity test module comprises a sensing pen and a test unit, wherein the test unit comprises a coil, a capacitor and a light emitting diode, and the coil, the capacitor and the light emitting diode are connected in parallel; The output end of the cable connectivity test module is connected to the input end of the main control module, and the output end of the voltage acquisition module is connected to the input end of the main control module.

2. A LKJ output signal and function expansion box testing device according to claim 1, characterized in that The device also includes a human-computer interaction module, and the human-computer interaction module is connected to the main control module.

3. A LKJ output signal and function expansion box testing device according to claim 2, characterized in that The device also includes a display module, and the display module is connected to the main control module.

4. A LKJ output signal and function expansion box testing device according to claim 3, characterized in that The device also includes a wireless module, and the output end of the main control module is connected to the input end of the wireless module.

5. A LKJ output signal and function expansion box testing device according to claim 4, characterized in that The device also includes a power supply module, and the output end of the power supply module is respectively connected to the input end of the main control module, the human-computer interaction module, the display module and the wireless module.

6. The LKJ output signal and function expansion box testing device according to claim 1, characterized in that The main control module adopts the GD32F103RCT6 chip.

7. The LKJ output signal and function expansion box testing device according to claim 1, characterized in that The voltage acquisition module includes a CL1680 chip and a voltage comparator LM339DR.

8. The LKJ output signal and function expansion box testing device according to claim 1, characterized in that The device also includes a clock module.

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