Network voltage monitoring device

Abstract

The utility model relates to a network voltage monitoring device, which is used for solving the problem that the existing electrified display device cannot meet harsh technical conditions and severe operating environments of rail transit. Comprising a display and a control box which are arranged up and down, the display comprises a packaging shell, and an LED panchromatic display screen, a first power supply module and a control card which are arranged in the packaging shell; the control box comprises a box body, a temperature and humidity sensor, an air switch, a second power module, a PLC and a voltage transmitter, the temperature and humidity sensor, the air switch, the second power module, the PLC and the voltage transmitter are arranged in the box body, the second power module is connected with the PLC and the voltage transmitter and used for providing 24V direct current, and the high-voltage side of the voltage transmitter is connected with an external 1500V high-voltage power source through an insulation supporting column or a high-voltage sensor. The low-voltage side of the voltage transmitter is connected with the PLC; and the PLC is used for comparing and analyzing multi-channel acquired information. The utility model has the advantages of convenient installation and wider on-site adaptation capability.

Description

Technical Field

[0001] The utility model relates to the technical field of live display devices, and more specifically to a network voltage monitoring device. Background Art

[0002] Currently, for the live display devices widely used in the industry, signals are usually taken from the auxiliary switch of the disconnector or the on-off dry contacts of other devices. By collecting the status signals of other devices, the live state of the catenary is indirectly reflected, but this method is not reliable. The display content of the existing live display devices is limited to "live" and "dead", and cannot well reflect the live state of the catenary; in addition, the existing live display devices cannot meet the requirements of the rail transit field for small size, intelligence and high reliability of equipment. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a network voltage monitoring device with simple structure, small volume, convenient installation and debugging, and accurate detection, which is used to solve the problem that the existing live display devices cannot meet the strict technical conditions and harsh operating environment of rail transit.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a network voltage monitoring device, which includes a display and a control box arranged up and down. The display includes a packaging shell, an LED full-color display screen, a first power supply module and a control card arranged in the packaging shell. The control card is connected to the LED full-color display screen and transmits display information to the LED full-color display screen. The first power supply module is connected to the control card and the LED full-color display screen to provide a stable 5V power supply. The control box includes a box body and a temperature and humidity sensor, an air switch, a second power supply module, a PLC and a voltage transmitter arranged in the box body. The air switch is connected to the temperature and humidity sensor, the first power supply module and the second power supply module to connect to the AC220V power supply. The temperature and humidity sensor is used to monitor the temperature and humidity inside the box body. The second power supply module is connected to the PLC and the voltage transmitter to provide 24V direct current. The high-voltage side of the voltage transmitter is connected to an external 1500V high-voltage power supply through an insulating support or a high-voltage sensor. The low-voltage side of the voltage transmitter is connected to the PLC, and the PLC is also connected to the control card and the PLC is used for multi-channel acquisition information comparison and analysis.

[0005] Further, an installation bracket is fixed on the packaging shell, and the installation bracket is fixedly connected to the box body.

[0006] Further, a pressing plate is arranged inside the packaging shell, the LED full-color display screen is fixed on the pressing plate, and the first power supply module and the control card are fixed on the pressing plate.

[0007] Further, the temperature and humidity sensor, air switch, second power supply module and PLC are fixed on the upper part of the box body.

[0008] Further, the voltage transmitter, insulating support and high-voltage sensor are fixed on the lower part of the box body.

[0009] Further, the lower part of the box body is also provided with a heater for adjusting the temperature and humidity inside the box body.

[0010] Further, mounting beams are arranged up and down inside the box body.

[0011] The beneficial effects of the present utility model are as follows: The present utility model adopts a split layout scheme of detection and display, that is, it includes a display and a control box, so as to achieve the purpose of being convenient for installation and disassembly, and has the ability to better adapt to complex on-site installation environments. The voltage transmitter is used to directly measure high voltage, and the measurement accuracy is higher. The PLC is used to perform multi-channel acquisition of information for comparison and analysis to ensure that the displayed information is more accurate, and the redundant design concept of voltage detection is also fully considered. The control card is used to control the LED full-color display screen, and the display content can be modified diversely through a computer on-site to meet different customer needs. The full-color display method can better give users a visual aesthetic feeling. The control box adopts a modular assembly method, with a wide variety of components and diverse solutions. It can be easily customized and assembled according to customer requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional view of the present utility model;

[0013] Figure 2 is a front view of the internal structure of the display;

[0014] Figure 3 is a front view of the internal structure of the control box;

[0015] In the figure: 1 display, 11 encapsulation housing, 12 LED full-color display screen, 13 pressure plate, 14 first power supply module, 15 mounting bracket, 16 control card, 2 control box, 21 box body, 22 temperature and humidity sensor, 23 air switch, 24 second power supply module, 25 PLC, 26 voltage transmitter, 27 insulating support, 28 high-voltage sensor, 29 heater, 3 mounting beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] As Figures 1 to 3 shown, the present utility model includes a display 1 and a control box 2, and the present utility model will be described in detail below with reference to the accompanying drawings.

[0017] As Figures 1 to 3 shown, a network voltage monitoring device includes a display 1 and a control box 2 arranged up and down. As Figure 1As shown in the figure, the display 1 includes a packaging shell 11, and an LED full-color display screen 12, a first power module 14, and a control card 16 disposed within the packaging shell 11. The control card 16 is connected to the LED full-color display screen 12 and transmits display information to the LED full-color display screen 12. The charged device number and real-time voltage value can be displayed on the LED full-color display screen 12, clearly and explicitly showing the energized condition of the charged device to on-site construction and maintenance personnel. The display 1 and the control box 2 can be installed independently or assembled together. The first power module 14 is connected to the control card 16 and the LED full-color display screen 12 to provide a stable 5V power supply. For ease of assembly, an L-shaped mounting bracket 15 is fixed to the side wall of the lower part of the packaging shell 11. The horizontal part of the mounting bracket 15 is fixedly connected to the box body 21, and the vertical part of the mounting bracket 15 is fixedly connected to the side wall of the packaging shell 11. Inside the packaging shell 11, there is a pressing plate 13. The LED full-color display screen 12 is fixed to the pressing plate 13, and the first power module 14 and the control card 16 are fixed to the pressing plate 13.

[0018] As Figure 3 shown in the figure, the control box 2 includes a box body 21, and a temperature and humidity sensor 22, a circuit breaker 23, a second power module 24, a PLC 25, and a voltage transmitter 26 disposed within the box body 21. The circuit breaker 23 is connected to the temperature and humidity sensor 22, the first power module 14, and the second power module 24 to connect to the AC220V power supply and provide a low-voltage DC power supply. The temperature and humidity sensor 22 is used to monitor the temperature and humidity inside the box body 21. The second power module 24 is connected to the PLC 25 and the voltage transmitter 26 to provide 24V DC power. The high-voltage side of the voltage transmitter 26 is connected to an external 1500V high-voltage power supply through an insulating support 27 or a high-voltage sensor 28. The low-voltage side of the voltage transmitter 26 is connected to the PLC 25. The PLC 25 is also connected to the control card 16 and the PLC 25 is used for multi-channel acquisition information comparison and analysis. Specifically, the PLC can collect voltage signals given by two voltage transmitters 26 at different positions, and after analysis and comparison, give more accurate energized state information. The control card 16 can receive the RS485 voltage signal transmitted by the PLC 25, and after parsing, can project the real-time high-voltage value onto the LED full-color display screen 12.

[0019] The temperature and humidity sensor 22, the circuit breaker 23, the second power module 24, and the PLC 25 are fixed to the upper part of the box body 21. The voltage transmitter 26, the insulating support 27, and the high-voltage sensor 28 are fixed to the lower part of the box body 21. The lower part of the box body 21 also has a heater 29 for adjusting the temperature and humidity inside the box body 21. The heater 29 works on the principle of electric heating. Inside the box body 21, there are mounting beams 3 arranged vertically. The temperature and humidity sensor 22, the circuit breaker 23, the second power module 24, and the PLC 25 are installed on the upper mounting beam 3, and the voltage transmitter 26, the insulating support 27, the high-voltage sensor 28, and the heater 29 are installed on the lower mounting beam 3.

[0020] The working principle of the utility model is described below: the high-voltage side of the voltage transmitter 26 is connected to the external 1500V high-voltage power supply through the insulating support 27 or the high-voltage sensor 28, and the voltage signal is converted into a 0-5V standard voltage signal after the voltage signal is collected, and then transmitted to the PLC25 through the cable. The PLC25 converts the voltage signal into an RS485 communication signal after receiving the two-way voltage signal analysis, comparison and processing, and transmits it to the control card 16 through the connecting cable. The control card 16 analyzes the RS485 signal and transmits it to the LED full-color display screen 12. The LED full-color display screen 12 displays the high-voltage voltage value in real time, and displays red when it exceeds the set threshold, and displays green when it is lower than the set threshold. At the same time, it can also display the equipment number. The entire monitoring device can clearly and intuitively display the energized state of the equipment to ensure the safety of the surrounding construction and maintenance personnel.

[0021] The utility model adopts a split arrangement scheme for detection and display, that is, it includes a display and a control box, so as to achieve the purpose of easy installation and disassembly, and has a wider ability to adapt to complex installation environments on site. The voltage transmitter is used to directly measure high voltage or the high voltage is measured through a high-voltage sensor, and the measurement accuracy is higher. The PLC is used for multi-channel information collection comparison and analysis to ensure that the displayed information is more accurate, and the redundant design concept of voltage detection is fully considered. The control card is used to control the LED full-color display screen, and the display content can be modified in a variety of ways through the computer on site to meet the different needs of customers. The full-color display method can better allow users to have visual beauty. The control box adopts a modular assembly method, with a wide variety of components and various solutions. Customized assembly can be easily achieved according to customer needs.

Claims

1. A network voltage monitoring device, characterized in that, It includes a display and a control box arranged vertically. The display includes a packaging shell, an LED full-color display screen, a first power module, and a control card arranged inside the packaging shell. The control card is connected to the LED full-color display screen and transmits display information to the LED full-color display screen. The first power module is connected to the control card and the LED full-color display screen to provide a stable 5V power supply. The control box includes a box body, and a temperature and humidity sensor, an air switch, a second power module, a PLC, and a voltage transmitter arranged inside the box body. The air switch is connected to the temperature and humidity sensor, the first power module, and the second power module to connect to the AC220V power supply. The temperature and humidity sensor is used to monitor the temperature and humidity inside the box body. The second power module is connected to the PLC and the voltage transmitter to provide 24V direct current. The high-voltage side of the voltage transmitter is connected to an external 1500V high-voltage power supply through an insulating support or a high-voltage sensor. The low-voltage side of the voltage transmitter is connected to the PLC. The PLC is also connected to the control card and the PLC is used for multi-channel acquisition information comparison and analysis.

2. The web pressure monitoring device according to claim 1, characterized in that An installation bracket is fixed on the packaging shell, and the installation bracket is fixedly connected to the box body.

3. The web pressure monitoring device according to claim 1, characterized in that, The inside of the packaging shell has a pressing plate, the LED full-color display screen is fixed on the pressing plate, and the first power module and the control card are fixed on the pressing plate.

4. The web pressure monitoring device according to claim 1, characterized in that, The temperature and humidity sensor, the air switch, the second power module, and the PLC are fixed on the upper part of the box body.

5. The web pressure monitoring device according to claim 1, characterized in that, The voltage transmitter, the insulating support, and the high-voltage sensor are fixed on the lower part of the box body.

6. The web pressure monitoring device according to claim 5, wherein The lower part of the box body also has a heater for adjusting the temperature and humidity inside the box body.

7. The web pressure monitoring device according to claim 1, characterized in that, There are installation beams arranged vertically inside the box body.

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