Portable AC load on-line monitoring device

Abstract

The utility model provides a portable AC load on-line monitoring device. The portable AC load on-line monitoring device comprises a box body, a power supply module, a man-machine interaction module, a master control module, a communication module, a sampling module and a register module. The box body comprises a first panel, a second panel and a box body frame, and all the modules are arranged in the box body. The power supply module supplies power to the portable AC load on-line monitoring device. And the communication module is connected with external communication equipment for real-time communication. The sampling module is connected with a to-be-detected device and detects current and voltage of the to-be-detected device. The main control module is connected with the power supply module, the communication module, the sampling module, the man-machine interaction module and the register module, controls operation of the power supply module, the communication module, the sampling module and the register module, and analyzes detected current signals and voltage signals to obtain waveform data. And the man-machine interaction module displays the waveform data and controls the main control module. The register module stores waveform data and is connected with an external storage device for data transmission. The device is firm in structure and convenient to carry, each module is highly integrated, faults can be conveniently analyzed, fault reasons can be conveniently found out, fault points can be conveniently checked, inspection personnel can be helped to rapidly judge fault areas, and on-site maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of subway AC load online monitoring devices, in particular to a portable AC load online monitoring device. Background Art

[0002] Existing online monitoring technology for subway AC loads involves installing sensors in the subway power supply system to collect the voltage and current of the AC loads, converting these signals into digital signals, and then determining whether a fault has occurred based on these signals. However, the Shanghai Metro monitoring system currently lacks dedicated online monitoring equipment and methods for terminal loads, and the measurement data from older integrated protection devices is less accurate. Therefore, existing devices make it difficult to troubleshoot the cause of a faulty AC equipment operation and are unable to quickly locate the faulty area. Utility Model Content

[0003] The purpose of the utility model is to provide a portable online monitoring device for AC load, which can detect the change of the load of subway AC equipment to accurately find out the cause of the fault and accurately locate the fault position.

[0004] In order to achieve the above objectives, the utility model provides a portable AC load online monitoring device, comprising:

[0005] A box body, the box body comprising a first panel, a second panel and a box body frame, the first panel and the second panel being mounted on the box body frame;

[0006] A power supply module, providing power to the portable AC load online monitoring device;

[0007] Communication module, connected to external communication equipment for real-time communication;

[0008] The sampling module is connected to the device under test and detects the current and voltage of the device under test;

[0009] A main control module receives the current signal and voltage signal detected by the sampling module to obtain waveform data;

[0010] A human-computer interaction module displays the waveform data, issues control instructions and controls the main control module;

[0011] A storage module, storing the waveform data, connected to an external storage device for data transmission;

[0012] Among them, the power supply module, the communication module, the sampling module, the main control module, the human-computer interaction module and the storage module are arranged inside the box, and the main control module is connected to the power supply module, the communication module, the sampling module, the human-computer interaction module and the storage module respectively to control the operation of the power supply module, the communication module, the sampling module and the storage module.

[0013] In one embodiment, the power module includes a power socket and a power switch, the power socket is connected to the power switch, the power socket is connected to the power supply, the power switch controls the opening or closing of the main control module, and the power switch starts or shuts down each module connected to the main control module.

[0014] In one embodiment, the power socket and the power switch are arranged on the second panel of the box.

[0015] In one embodiment, the communication module communicates with an external communication device, and the communication module includes a communication interface, and the communication interface is connected to the external communication device for real-time communication.

[0016] In one embodiment, the sampling module includes multiple sampling interfaces, which include a voltage sampling interface and a current sampling interface. The voltage sampling interface is connected to the device under test to detect the voltage of the device under test, and the current sampling interface is connected to the device under test to detect the current of the device under test. The sampling module transmits the detected current signal and voltage signal to the main control module.

[0017] In one embodiment, the communication module includes a communication interface, the sampling module includes a plurality of sampling interfaces, and the communication interface and the sampling interfaces are arranged on the first panel of the box.

[0018] In one embodiment, the main control module includes a load data analysis device, which processes the detected current signal and voltage signal to obtain a processing result. The load data analysis device converts the processing result into the waveform data, and the main control module outputs the waveform data to the storage module and the human-computer interaction module.

[0019] In one embodiment, the storage module includes a register and an output interface, the register stores the waveform data, and the output interface is connected to an external storage device to export the waveform data.

[0020] In one embodiment, the human-computer interaction module includes a touch screen, and the touch screen includes a control interface and a display interface. The control interface issues control instructions to control the main control module, and the display interface displays the waveform data and uses the waveform data to determine whether a fault occurs.

[0021] In one embodiment, the box body is made of aluminum alloy plate, the box body frame is designed as a plastic frame, and reinforcing ribs are arranged inside the box body frame.

[0022] The utility model has the following beneficial effects:

[0023] This portable online AC load monitoring device detects changes in the load of subway AC equipment and uses a load data analysis device to generate waveform data to determine if the subway AC equipment is faulty. This device integrates a power supply module, a human-computer interaction module, a main control module, a communication module, a sampling module, and a storage module. This visualizes the fault area of ​​subway AC equipment, making it easy to analyze faults, identify their causes, and troubleshoot their locations. This helps inspectors quickly determine the fault area and improve on-site maintenance efficiency.

[0024] The portable online monitoring device for AC loads of the present invention can also select different communication modes and access power sources according to actual conditions. The portable online monitoring device for AC loads of the present invention has a solid structure, is easy to carry and easy to operate, and is more practical and universal. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a portable AC load online monitoring device according to an embodiment of the present invention;

[0026] Figure 2 This is a circuit diagram of an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the first panel of the box according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the second panel of the box according to an embodiment of the present invention;

[0029] Figure 5 This is a diagram of the operating interface of a display module according to an embodiment of the present invention.

[0030] Reference numerals

[0031] 1. Power module; 11. DC24 socket; 12. AC / DC converter; 13. Power switch; 14. AC / DC converter; 15. Power socket; 2. Human-computer interaction module; 21. Touch screen; 3. Main control module; 4. Communication module; 41. RS285 / RS232 converter; 42. DB9 interface; 43. 4G antenna; 44. 485 communication interface; 5. Sampling module; 51. Voltage sampling interface; 52. Current sampling interface; 6. Register module; 61. Output interface; 7. Box; 71. First panel; 72. Second panel; 73. Box frame; 74. Mechanical handle DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] like Figure 1 、 Figure 2 As shown, the present invention provides a portable online AC load monitoring device, comprising a housing 7, a power module 1, a human-computer interaction module 2, a main control module 3, a communication module 4, a sampling module 5, and a register module 6. The housing 7 includes a first panel 71, a second panel 72, and a housing frame 73, with the first and second panels 71, 72 mounted on the housing frame 73. The power module 1 provides power to the portable online AC load monitoring device and the device under test. The communication module 4 connects to an external communication device for real-time communication. The sampling module 5 connects to the device under test to detect the current and voltage of the device under test. The main control module 3 connects to the device under test and analyzes the detected current and voltage signals to obtain waveform data. The human-computer interaction module 2 displays the waveform data, issues control instructions, and controls the main control module 3. The register module 6 stores the waveform data and connects to external devices for data transmission. The power module 1, human-computer interaction module 2, main control module 3, communication module 4, sampling module 5, and register module 6 are disposed within the housing 7. The main control module 3 is connected to the power module 1, the human-computer interaction module 2, the communication module 4, the sampling module 5, and the storage module 6 respectively to control the operation of the power module 1, the communication module 4, the sampling module 5, and the storage module 6.

[0034] In this embodiment, Figure 4As shown, the power module 1 includes an output socket 11, a power switch 13, and a power socket 15. The power socket 15 is connected to a power source. The power switch 13 controls the opening or closing of the main control module. The power switch 13 starts or closes each module connected to the main control module 3. The output socket 11 is connected to the power switch 13, and the output socket 11 supplies power to other active sampling devices. In this embodiment, the power switch 13 is an AC switch, the output socket 11 is a DC24 socket, and an AC / DC converter 12 is provided on the line connecting the power switch 13 and the output socket 11. In this embodiment, the preset voltages include 220V and 24V. Figure 2 As shown, the input 220V AC power is converted to 220V DC power by the AC / DC converter 14. This circuit with a preset voltage of 220V is the power supply circuit, which powers the monitor. The input 220V AC power is converted to 24V DC power by the AC / DC converter 12. This circuit with a preset voltage of 24V is used to power other active sampling devices.

[0035] Furthermore, the output socket 11, the power switch 13, and the power socket 15 are arranged on the second panel 72 of the box.

[0036] Furthermore, the communication module 4 is connected to an external communication device for real-time communication. The communication module is provided with two communication modes, namely wireless communication and wired communication, and wired communication or wireless communication can be selected according to different external communication devices. Among them, wired communication can select different wired communication interfaces according to different external communication devices, and connect the external communication device for real-time communication. In this embodiment, the communication module 4 is preferably provided with wireless communication 43, wired communication interface 44 and wired communication interface 42. Figure 3 As shown, wireless communication 43 is a 4G antenna connected to wireless communication equipment. Figure 3 As shown, when the communication method is RS485 standard, the 485 communication interface 44 can be used to connect multiple external communication devices for medium and long distance communication. Figure 2 As shown, when the communication method is RS232 standard, an RS485 / RS232 converter 41 can be connected to convert RS485 to RS232, and then the DB9 communication interface 42 can be used for short-distance communication.

[0037] Furthermore, the sampling module 5 includes multiple sampling interfaces, including a voltage sampling interface 51 and a current sampling interface 52. The voltage sampling interface 51 is connected to the device under test to detect the voltage of the device under test, and the current sampling interface 52 is connected to the device under test to detect the current of the device under test. The sampling module 5 transmits the detected current signal and voltage signal to the main control module 3.

[0038] Furthermore, the communication interface, multiple current sampling interfaces 51 and multiple voltage sampling interfaces 52 are provided on the first panel 71 of the box. Figure 3 As shown, the first panel 71 of the box is provided with an 485 communication interface 44 near the bottom of the 4G antenna 43. The HMI touch screen 21 is provided in the middle of the first panel 71 of the box, and the output interface 61 is provided on the bottom of the first panel 71 of the box near the HMI touch screen 21. Multiple voltage sampling interfaces 51 and current sampling interfaces 52 are provided on the right side of the first panel 71 of the box near the HMI touch screen 21. Mechanical handles 74 are also provided on both sides of the first panel 71 of the box.

[0039] Furthermore, the main control module 3 includes a load data analysis device, which processes the detected current signal and voltage signal to obtain a processing result. The load data analysis device converts the processing result into waveform data, and the main control module outputs the waveform data to the storage module 6 and the human-computer interaction module 2.

[0040] Furthermore, the storage module 6 includes a register and an output interface 61 . The register stores the waveform data, and the output interface 61 is connected to a corresponding device to export the stored waveform data.

[0041] Furthermore, the human-computer interaction module 2 includes a touch screen 21, which includes a control interface and a display interface. The control interface sends control instructions to control the main control module, and the display interface displays waveform data and uses the waveform data to determine whether a fault occurs. Figure 5 As shown, the control interface includes multiple control instructions, and the inspection personnel can select the control instructions to control the main control module.

[0042] Furthermore, the material of the box body is an aluminum alloy plate, the box body frame is designed as a plastic frame, and reinforcing ribs are arranged inside the frame.

[0043] The operating method of the AC load online monitoring device of one embodiment of the present invention is as follows: Turn on the portable AC load online monitoring device, turn off all switches on the monitoring device, and after checking that everything is correct, connect the power socket 15 to the power supply, turn on the power switch 13, and the human-computer interaction module 2 and the main control module 3 will automatically operate. The device under test is connected to the current sampling interface 51 and the voltage sampling interface 52. The sampling module 5 transmits the detected current and voltage signals to the main control module 3. The main control module 3 processes the detected current and voltage signals to obtain a processing result. The main control module 3 converts the processing result into waveform data and outputs the waveform data to the human-computer interaction module 2 and the storage module 6. The inspection personnel determine whether the device under test has a fault based on the waveform data and select control instructions through the touch screen 21 in the human-computer interaction module 2. The storage module 6 stores the waveform data and can export the stored waveform data by connecting to the corresponding device through the output interface. The communication module 4 can be connected to a wireless communication device via the 4G antenna 43, or it can be connected to a wired communication device via the 485 communication interface 44 or the DB9 interface 42 for communication operations.

[0044] The utility model has the following beneficial effects:

[0045] This portable online AC load monitoring device detects changes in the load of subway AC equipment and uses a load data analysis device to generate waveform data to determine if the subway AC equipment is faulty. This device integrates a power supply module, a human-computer interaction module, a main control module, a communication module, a sampling module, and a storage module. This visualizes the fault area of ​​subway AC equipment, making it easy to analyze faults, identify their causes, and troubleshoot their locations. This helps inspectors quickly determine the fault area and improve on-site maintenance efficiency.

[0046] The portable online monitoring device for AC loads of the present invention can also select different communication modes and access power sources according to actual conditions. The portable online monitoring device for AC loads of the present invention has a solid structure, is easy to carry and easy to operate, and is more practical and universal.

[0047] The above embodiments are merely further explanations of the present invention and are not intended to limit the present invention in any other manner. The present invention may have many other embodiments. Without departing from the spirit and substance of the present invention, those skilled in the art may make various modifications and variations based on the present invention, and such modifications and variations shall fall within the scope of protection of the present invention.

Claims

1. A portable AC load online monitoring device, characterized in that: include: A box body, the box body comprising a first panel, a second panel and a box body frame, the first panel and the second panel being mounted on the box body frame; A power supply module, providing power to the portable AC load online monitoring device; Communication module, connected to external communication equipment for real-time communication; The sampling module is connected to the device under test and detects the current and voltage of the device under test; A main control module receives the current signal and voltage signal detected by the sampling module and obtains waveform data; A human-computer interaction module displays the waveform data, issues control instructions and controls the main control module; A storage module, storing the waveform data, connected to an external storage device for data transmission; Among them, the power supply module, the communication module, the sampling module, the main control module, the human-computer interaction module and the storage module are arranged inside the box, and the main control module is connected to the power supply module, the communication module, the sampling module, the human-computer interaction module and the storage module respectively to control the operation of the power supply module, the communication module, the sampling module and the storage module.

2. The portable AC load online monitoring device according to claim 1, characterized in that: The power module includes a power socket and a power switch. The power socket is connected to the power switch. The power socket is connected to a power source. The power switch controls the opening or closing of the main control module. The power switch starts or shuts down each module connected to the main control module.

3. The portable AC load online monitoring device according to claim 2, characterized in that: The power socket and the power switch are arranged on the second panel of the box.

4. The portable AC load online monitoring device according to claim 1, characterized in that: The communication module communicates with an external communication device. The communication module includes a communication interface. The communication interface is connected to the external communication device for real-time communication.

5. The portable AC load online monitoring device according to claim 1, characterized in that: The sampling module includes multiple sampling interfaces, which include a voltage sampling interface and a current sampling interface. The voltage sampling interface is connected to the device under test to detect the voltage of the device under test, and the current sampling interface is connected to the device under test to detect the current of the device under test. The sampling module transmits the detected current signal and voltage signal to the main control module.

6. The portable AC load online monitoring device according to claim 1, characterized in that: The communication module includes a communication interface, and the sampling module includes a plurality of sampling interfaces. The communication interface and the sampling interfaces are arranged on the first panel of the box.

7. The portable AC load online monitoring device according to claim 1, characterized in that: The main control module includes a load data analysis device, which processes the detected current signal and voltage signal to obtain a processing result. The load data analysis device converts the processing result into the waveform data, and the main control module outputs the waveform data to the storage module and the human-computer interaction module.

8. The portable AC load online monitoring device according to claim 1, characterized in that: The register module includes a register and an output interface, the register stores the waveform data, and the output interface is connected to an external storage device to export the waveform data.

9. The portable AC load online monitoring device according to claim 1, characterized in that: The human-computer interaction module includes a touch screen, and the touch screen includes a control interface and a display interface. The control interface sends control instructions to control the main control module, and the display interface displays the waveform data and uses the waveform data to determine whether a fault occurs.

10. The portable AC load online monitoring device according to claim 1, characterized in that: The material of the box body is an aluminum alloy plate, the box body frame is designed as a plastic frame, and reinforcing ribs are arranged inside the box body frame.

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