Detection device for low-voltage cabinet of electric locomotive

Abstract

The utility model relates to low -voltage cabinet detection technical field especially relates to detection equipment of electric locomotive low -voltage cabinet, including the case, the case inside is provided with main control module, detection module, communication module, power module and intelligent analysis module, and the case outside is provided with operating panel and connecting port, the main control module adopts programmable logic controller. The utility model through each module cooperation has realized to electric locomotive low -voltage cabinet from data acquisition, transmission, processing to the whole process automation detection of analysis diagnosis, compared with traditional single function detection equipment, has improved the overall nature and efficiency of detection greatly, data encryption unit has guaranteed the security of detection data in transmission process, avoids data to be stolen or tampered with, provides the guarantee for electric locomotive operation and maintenance data security, and a variety of interface design has strengthened the compatibility of equipment, can adapt to different types of sensor and external equipment, satisfies the diversified detection demand, improves the versatility of equipment.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear testing technology, and in particular to testing equipment for low-voltage switchgear in electric locomotives. Background Technology

[0002] The low-voltage switchgear in an electric locomotive is an electrical device used to control and protect low-voltage electrical equipment. It controls and operates various low-voltage devices on the locomotive, ensuring these devices function normally according to the locomotive's operational needs. It possesses multiple protection mechanisms, providing overload, short-circuit, undervoltage, and overvoltage protection for the low-voltage electrical equipment. When an abnormal situation occurs, the low-voltage switchgear can quickly disconnect the circuit to prevent further escalation of the fault, protecting equipment and personnel safety.

[0003] Currently available testing equipment for low-voltage switchgear in electric locomotives faces several pressing issues. Firstly, traditional testing equipment has limited functionality, mostly only capable of measuring basic electrical parameters such as voltage and current. It cannot monitor critical operating parameters like temperature, vibration, and partial discharge, making it difficult to comprehensively assess the overall operating status of the switchgear. This can lead to undetected potential faults and significant safety hazards. Secondly, existing testing equipment lacks versatility. Different models are often only compatible with specific types of low-voltage switchgear in electric locomotives, failing to meet diverse testing needs. When dealing with multiple models of low-voltage switchgear, multiple specialized testing devices are required, increasing procurement costs and causing significant inconvenience for maintenance personnel, ultimately reducing testing efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a testing device for low-voltage switchgear in electric locomotives, which solves the problem that the existing testing devices for low-voltage switchgear in electric locomotives have significant shortcomings in terms of comprehensiveness, versatility, and data security, and cannot meet the current needs of efficient operation and maintenance of electric locomotives.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The testing equipment for the low-voltage switchgear of electric locomotives includes a chassis, which contains a main control module, a testing module, a communication module, a power supply module and an intelligent analysis module, and an operation panel and connection ports on the outside of the chassis.

[0007] The main control module adopts a programmable logic controller and is connected to the detection module, communication module, power supply module and intelligent analysis module through a data bus;

[0008] The detection module consists of various sensors and signal processing circuits;

[0009] The communication module supports wireless communication protocols and wired communication interfaces, and is equipped with a data encryption unit.

[0010] The power module includes a rechargeable battery and a power conversion circuit.

[0011] The intelligent analysis module has a built-in fault diagnosis model;

[0012] The control panel has an interactive interface.

[0013] Preferably, the main control module integrates a field-programmable gate array (FPGA) chip, the data bus is a high-speed data bus, and the main control module utilizes the parallel processing capability of the FPGA chip to quickly process the detection data and realize efficient control and data interaction of the detection module, communication module, power supply module and intelligent analysis module.

[0014] Preferably, the sensor includes at least one of a current sensor, a voltage sensor, a temperature sensor, a vibration sensor, a partial discharge sensor, and a humidity sensor. The signal processing circuit uses a low-noise amplifier and a high-precision analog-to-digital converter chip to amplify, filter, and perform analog-to-digital conversion on the analog signal collected by the sensor before transmitting it to the main control module.

[0015] Preferably, the wireless communication protocol includes at least one of 5G, WiFi, and Bluetooth, and the wired communication interface includes at least one of Ethernet interface and RS485 interface.

[0016] Preferably, the fault diagnosis model is a fault diagnosis model based on deep learning algorithms. The intelligent analysis module determines the fault of the low-voltage cabinet, locates the fault type and location, generates a fault diagnosis report, and has predictive maintenance functions by comprehensively analyzing the data.

[0017] Preferably, the operation panel adopts a touch screen and is equipped with a voice interaction module. The voice interaction module supports voice command input and voice broadcast functions. The operation panel is also equipped with status indicator lights.

[0018] Preferably, the chassis is further provided with an adaptive adjustment module, which includes a signal conditioning circuit.

[0019] This utility model has at least the following beneficial effects:

[0020] Through the collaborative work of various modules, the entire process of automated testing of the low-voltage cabinet of electric locomotives, from data acquisition, transmission, processing to analysis and diagnosis, is realized. Compared with traditional single-function testing equipment, this greatly improves the comprehensiveness and efficiency of testing. The data encryption unit ensures the security of test data during transmission, preventing data theft or tampering and providing protection for the security of electric locomotive operation and maintenance data. The multiple interface design enhances the compatibility of the equipment, allowing it to be adapted to different types of sensors and external devices, meeting diverse testing needs and improving the versatility of the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the chassis structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the detection module of this utility model;

[0024] Figure 3 This is a flowchart of the main control module of this utility model.

[0025] In the diagram: 1. Low-voltage cabinet body; 2. Operation panel; 3. Connection port; 4. Current sensor; 5. Voltage sensor; 6. Temperature sensor; 7. Vibration sensor; 8. Partial discharge sensor; 9. Humidity sensor; 10. Detection module; 11. Main control module; 12. Intelligent analysis module; 13. Status indicator light; 14. Mobile terminal; 15. Chassis. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] Reference Figure 1-3 The testing equipment for the low-voltage switchgear of electric locomotives includes a chassis 15, which is made of high-strength aluminum alloy, providing excellent heat dissipation and mechanical strength. The internal space of the chassis is rationally arranged, housing the main control module 11, the testing module 10, the communication module, the power supply module, the intelligent analysis module 12, and the adaptive adjustment module. An operation panel 2 is located on the front of the chassis 15, and connection ports 3 are located on the side.

[0029] The main control module 11 adopts a programmable logic controller (PLC) and is connected to the detection module 10, communication module, power supply module and intelligent analysis module 12 through a data bus;

[0030] The detection module 10 consists of various sensors and signal processing circuits;

[0031] The communication module supports wireless communication protocols and wired communication interfaces, and is equipped with a data encryption unit.

[0032] The power module includes a rechargeable battery and a power conversion circuit.

[0033] The intelligent analysis module 12 has a built-in fault diagnosis model;

[0034] The operation panel 2 is equipped with an interactive interface;

[0035] The connection port 3 is equipped with various types of interfaces.

[0036] The chassis 15 serves as the main support, internally housing the main control module 11, detection module 10, communication module, power supply module, and intelligent analysis module 12. Externally, it includes an operation panel 2 and connection ports 3. All components work together to achieve the detection function. The main control module 11, based on a programmable logic controller (PLC), establishes a communication network via a data bus, sending detection commands to the detection module 10 and receiving detection data; it schedules data transmission from the communication module; controls the power supply module; and receives and processes the analysis results from the intelligent analysis module 12. The detection module 10 uses various sensors to collect physical quantity data of the low-voltage cabinet's operation, converting it into processable electrical signals through a signal processing circuit. The communication module, based on a pre-defined wireless or wired communication protocol, enables data interaction between the device and external devices. A data encryption unit uses an encryption algorithm to encrypt transmitted data to prevent data leakage. In the power supply module, a rechargeable battery stores electrical energy, and a power conversion circuit converts the battery voltage to the voltage required by each module. The intelligent analysis module 12 analyzes and judges the data transmitted by the main control module 11 based on a built-in fault diagnosis model. The interactive interface of the operation panel 2 provides users with an operation entry and information display window, while the various types of interfaces of the connection port 3 are used to connect sensors and external devices to achieve physical connection and signal transmission.

[0037] Furthermore, the main control module 11 integrates a field-programmable gate array (FPGA) chip, and the data bus is a high-speed data bus. The main control module 11 utilizes the parallel processing capability of the FPGA chip to quickly process the detection data and realize efficient control and data interaction of the detection module 10, communication module, power supply module and intelligent analysis module 12.

[0038] The main control module 11 integrates a field-programmable gate array (FPGA) chip, which, combined with a high-speed data bus, constructs a high-speed data processing and transmission channel. The FPGA chip has parallel processing capabilities; when a large amount of data collected by the detection module 10 is transmitted to the main control module 11, the FPGA chip can simultaneously handle multiple data processing tasks, such as data preprocessing and protocol conversion. The high-speed data bus employs a high-speed data transmission protocol, reducing data transmission latency and ensuring fast and stable data transmission. The main control module 11 utilizes the parallel processing capability of the FPGA chip to rapidly process data and then efficiently control the detection process of the detection module 10, the data transmission of the communication module, the power supply strategy of the power module, and the data reception and analysis of the intelligent analysis module 12 via a high-speed data bus. This enables efficient collaborative work among the modules, improving the data processing speed and system response capability of the detection equipment. It can quickly process large amounts of detection data, shorten detection time, and improve detection efficiency. The high-speed data bus ensures the stability and real-time performance of data transmission, avoids data loss and transmission delays, and ensures that detection data is accurately and timely transmitted to each module for processing and analysis. The efficient control and data interaction mechanism enhances the overall stability and reliability of the equipment, reduces detection errors and failure risks caused by data processing or transmission problems, and enables the equipment to adapt to complex and ever-changing detection environments.

[0039] Furthermore, the sensor includes at least one of a current sensor 4, a voltage sensor 5, a temperature sensor 6, a vibration sensor 7, a partial discharge sensor 8, and a humidity sensor 9. The signal processing circuit uses a low-noise amplifier and a high-precision analog-to-digital converter chip to amplify, filter, and perform analog-to-digital conversion on the analog signals collected by the sensor before transmitting them to the main control module 11.

[0040] Multiple sensors, based on different physical effects, convert physical quantities such as current, voltage, temperature, vibration, partial discharge, and humidity during the operation of the low-voltage switchgear into electrical signals. For example, current sensor 4, based on the principle of electromagnetic induction, converts the magnitude of current into a corresponding voltage signal; temperature sensor 6 utilizes the temperature-resistance characteristics of semiconductor materials to convert temperature changes into resistance changes, and then into a voltage signal. A low-noise amplifier in the signal processing circuit amplifies the weak electrical signals output by the sensors, increasing signal strength; a high-precision analog-to-digital converter chip converts analog electrical signals into digital signals for processing by the main control module 11; a digital filtering algorithm filters the digital signals, removing interference noise and extracting effective signals, enabling multi-dimensional monitoring of the operating status of the low-voltage switchgear in electric locomotives. This allows for comprehensive acquisition of the low-voltage switchgear's operating parameters, providing a more accurate and comprehensive reflection of the actual operating status compared to single-sensor detection, improving the accuracy and reliability of fault detection. The high-precision signal processing circuit ensures the quality of the acquired signals, reducing signal distortion and noise interference, making the detection data more accurate. This provides a reliable data foundation for subsequent fault diagnosis and analysis, helping to promptly identify potential faults in the low-voltage switchgear and reduce the probability of equipment failure.

[0041] Furthermore, the wireless communication protocol includes at least one of 5G, WiFi, and Bluetooth, and the wired communication interface includes at least one of Ethernet interface and RS485 interface.

[0042] The communication module integrates communication chips and circuits for various wireless communication protocols and wired communication interfaces. When wireless communication, such as 5G, is selected, the 5G communication chip encodes and modulates the detection data according to the 5G communication protocol, and transmits it to the base station via an antenna, achieving remote data transmission. WiFi communication establishes a connection with a wireless router through a WiFi chip and transmits data according to the WiFi protocol. For wired communication, the Ethernet interface uses a network transformer and network chip to convert data into network signals for transmission according to the Ethernet protocol. The RS485 interface utilizes the differential signal transmission principle, achieving long-distance, interference-resistant data transmission through two data lines. The data encryption unit encrypts the data using symmetric or asymmetric encryption algorithms before data transmission, and the receiving end decrypts the data. Wireless communication meets the needs of remote monitoring and mobile detection, enabling maintenance personnel to obtain low-voltage cabinet detection data in real time, achieving remote fault diagnosis and management. Wired communication is suitable for scenarios with high requirements for data transmission stability and security, such as data interaction with a local server in a fixed testing location. The data encryption mechanism ensures the confidentiality and integrity of data during transmission, prevents data from being illegally obtained and tampered with, safeguards the security of electric locomotive operation and maintenance data, and improves the practicality and security of testing equipment.

[0043] Furthermore, the fault diagnosis model is a fault diagnosis model based on deep learning algorithms. The intelligent analysis module 12 determines the fault of the low-voltage cabinet, locates the fault type and location, generates a fault diagnosis report, and has predictive maintenance functions by comprehensively analyzing multi-dimensional data.

[0044] A fault diagnosis model based on deep learning algorithms learns and trains on a large amount of normal operation and fault data of low-voltage switchgear to build a mapping relationship between data features and fault types. When the main control module 11 transmits detection data to the intelligent analysis module 12, the model extracts and analyzes features from multi-dimensional data, such as extracting waveform features of current and voltage signals through convolutional neural networks and analyzing time series features of temperature and vibration data through recurrent neural networks. Based on the extracted features and combined with the trained model parameters, the model determines whether there is a fault in the low-voltage switchgear, identifies the fault type and location, and predicts potential faults based on historical data trend analysis. It then generates a fault diagnosis report and predictive maintenance suggestions, achieving intelligent diagnosis and prediction of faults in the low-voltage switchgear of electric locomotives. Compared with traditional fault diagnosis methods based on empirical rules, it can more accurately identify complex fault modes, improving the accuracy and efficiency of fault diagnosis. By predicting potential faults in advance, maintenance personnel can take preventive maintenance measures to avoid faults, reduce equipment downtime and maintenance costs, and improve the reliability and safety of electric locomotive operation. The generated detailed fault diagnosis report provides maintenance personnel with clear fault information, helping to quickly locate and repair faults and improve the level of operation and maintenance management.

[0045] Furthermore, the operation panel 2 adopts a touch screen and is equipped with a voice interaction module. The voice interaction module supports voice command input and voice broadcast functions. The operation panel 2 is also equipped with status indicator lights 13.

[0046] The touchscreen display is based on capacitive or resistive touch principles. Users select detection items, set parameters, and view detection results on the display through touch operations. The touch signal is converted into an electrical signal by the touch controller and transmitted to the main control module 11 for processing. The voice interaction module uses a voice recognition chip and a voice synthesis chip. When the user issues a voice command, the voice recognition chip converts the voice signal into text information and transmits it to the main control module 11 for parsing and execution. The main control module 11 sends the information that needs feedback to the voice synthesis chip, which converts it into a voice signal and broadcasts it through the speaker. The status indicator light 13 uses different colors and flashing patterns to intuitively display the device's operating status, and its on / off state is controlled by the main control module 11.

[0047] Furthermore, the chassis is also equipped with an adaptive adjustment module, which includes a signal conditioning circuit; the signal conditioning circuit can automatically adjust the sensor detection range and sensitivity.

[0048] The signal conditioning circuit mainly consists of components such as a programmable gain amplifier and filters. When detecting low-voltage switchgear of different types or operating states, the main control module 11 sends conditioning commands to the signal conditioning circuit based on the detection requirements and sensor feedback data. The signal conditioning circuit automatically adjusts the sensor's detection range by adjusting the amplification factor of the programmable gain amplifier; and adjusts the sensor's sensitivity by changing the filter parameters, ensuring that the sensor can output accurate and effective signals under different detection scenarios.

[0049] In summary, this low-voltage switchgear testing equipment for electric locomotives uses a high-strength aluminum alloy chassis 15 as its carrier, integrating multiple modules such as main control, detection, and communication internally, and an operation panel 2 and connection port 3 externally. All components work together to achieve the testing function. The main control module 11 uses a PLC as its core and integrates an FPGA chip, achieving efficient control and data interaction with other modules via a high-speed data bus. The detection module 10 uses various sensors to collect low-voltage switchgear operating data, which is transmitted to the main control module 11 via a high-precision signal processing circuit. The communication module supports multiple wireless and wired communication protocols and ensures data transmission security through a data encryption unit. The intelligent analysis module 12 uses a fault diagnosis model based on deep learning algorithms to analyze multi-dimensional data, achieving fault diagnosis, location, and predictive maintenance. The operation panel 2 combines a touch screen and a voice interaction module for convenient user operation and access to equipment status information. The signal adjustment circuit of the adaptive adjustment module can automatically adjust the sensor detection range and sensitivity according to testing requirements. Through the innovative design and collaborative operation of its various modules, this equipment significantly improves testing efficiency, accuracy, and reliability, enabling intelligent and comprehensive testing of the low-voltage switchgear of electric locomotives, effectively ensuring the safe operation of electric locomotives and reducing maintenance costs.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Testing equipment for low-voltage switchgear of electric locomotives, including a chassis (15), characterized in that, The chassis (15) is equipped with a main control module (11), a detection module (10), a communication module, a power supply module and an intelligent analysis module (12) inside, and an operation panel (2) and a connection port (3) are provided outside the chassis. The main control module (11) adopts a programmable logic controller (PLC) and is connected to the detection module (10), communication module, power supply module and intelligent analysis module (12) through a data bus; The detection module (10) consists of a sensor and a signal processing circuit; The communication module supports wireless communication protocols and wired communication interfaces, and is equipped with a data encryption unit. The power module includes a rechargeable battery and a power conversion circuit. The intelligent analysis module (12) has a built-in fault diagnosis model; The operation panel (2) is equipped with an interactive interface.

2. The testing equipment for the low-voltage switchgear of electric locomotives according to claim 1, characterized in that, The main control module (11) integrates a field-programmable gate array (FPGA) chip. The data bus is a high-speed data bus. The main control module (11) uses the parallel processing capability of the FPGA chip to quickly process the detection data and realize efficient control and data interaction of the detection module (10), communication module, power supply module and intelligent analysis module (12).

3. The testing equipment for the low-voltage switchgear of electric locomotives according to claim 1, characterized in that, The sensor includes at least one of a current sensor (4), a voltage sensor (5), a temperature sensor (6), a vibration sensor (7), a partial discharge sensor (8), and a humidity sensor (9). The signal processing circuit uses a low-noise amplifier and a high-precision analog-to-digital converter chip to amplify, filter, and perform analog-to-digital conversion on the analog signals collected by the sensor before transmitting them to the main control module (11).

4. The testing equipment for the low-voltage switchgear of electric locomotives according to claim 1, characterized in that, The wireless communication protocol includes at least one of 5G, WiFi, and Bluetooth, and the wired communication interface includes at least one of Ethernet interface and RS485 interface.

5. The testing equipment for the low-voltage switchgear of electric locomotives according to claim 1, characterized in that, The fault diagnosis model is a fault diagnosis model based on deep learning algorithm. The intelligent analysis module (12) judges the fault of the low-voltage cabinet, locates the fault type and location, generates a fault diagnosis report, and has predictive maintenance function by comprehensively analyzing the data.

6. The testing equipment for the low-voltage switchgear of electric locomotives according to claim 1, characterized in that, The operation panel (2) adopts a touch screen and is equipped with a voice interaction module. The voice interaction module supports voice command input and voice broadcast functions. The operation panel (2) is also equipped with status indicator lights (13).

7. The testing equipment for the low-voltage switchgear of electric locomotives according to claim 1, characterized in that, The chassis is also equipped with an adaptive adjustment module, which includes a signal conditioning circuit.

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