Remote monitoring equipment for use state of low-voltage shore power socket box based on optical fiber communication

Abstract

A low-voltage shore power socket box use state remote monitoring device based on optical fiber communication is characterized in that an IOT gateway is used for connecting various Internet of Things devices to realize interconnection and intercommunication among the devices, a switching power supply is used for providing a stable direct current power supply, and a socket body is in communication connection with a switching value acquisition module through an optical fiber link. The switching value acquisition module is in communication connection with an upper computer through a 485 optical modem in cooperation with an optical fiber link, switching value signals of the socket body are transmitted to the switching value acquisition module through the optical fiber link, and data are accessed to the upper computer through the 485 optical modem. Compared with the prior art, labor cost is reduced to one third of the original labor cost, the labor cost is greatly saved, and due to safety and stability in signal transmission, problems can be found and processed at the first time, the equipment guarantee capability is greatly improved, and green wharf construction of companies is well assisted.

Description

Technical Field

[0001] The utility model relates to an electric socket box monitoring device, in particular to a remote monitoring device for the usage status of a low-voltage onshore power socket box based on optical fiber communication. Background Art

[0002] In recent years, the world's shipping trade has been booming, and the throughput of trade goods at major ports in China ranks among the top in the world. During the period when a ship is docked, the fuel generator must continuously supply power to ensure the normal operation of the ship's electrical equipment. However, the fuel utilization rate of the fuel generator is low, the excessive generated electric energy cannot be stored, and the pollutants generated by combustion also cause great environmental pollution to the port city.

[0003] The technology of ship shore power (shore power definition: a system in which power is supplied from the shore side to the ship side during the period when a ship is docked at a port. When the capacity of the dock shore power system is below 1 MVA, a low-voltage shore power solution is often adopted) enables a ship to obtain grid power from the dock during the docking period, thereby shutting down its own generator, effectively solving the environmental and noise pollution problems of the docked ship.

[0004] Our company has built 9 low-voltage socket boxes with 18 sockets. It is often time-consuming and laborious to conduct regular inspections. Therefore, it is particularly important to ensure the normal use of shore power equipment and detect and handle faults in a timely manner. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a remote monitoring device for the usage status of a low-voltage onshore power socket box based on optical fiber communication, which can realize remote monitoring, actively alarm, and analyze the fault status and causes of the socket box.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solutions:

[0009] A remote monitoring device for the usage status of a low-voltage onshore power socket box based on optical fiber communication includes an IOT Internet of Things gateway, a switching power supply, a socket body, a digital input module, a 485 optical modem, and a host computer. The IOT Internet of Things gateway is used to connect various Internet of Things devices to realize the interconnection and intercommunication between devices. The switching power supply is used to provide a stable DC power supply. The socket body is communicatively connected to the digital input module through an optical fiber link. The digital input module is communicatively connected to the host computer through the 485 optical modem and in cooperation with the optical fiber link. The digital signal of the socket body is transmitted to the digital input module through the optical fiber link and the data is accessed to the host computer through the 485 optical modem.

[0010] It further includes an intermediate relay, which is used to clarify the digital signal of the socket box.

[0011] It also includes a breaker auxiliary contact, which is connected to the indicator light circuit to display the opening and closing status of the breaker.

[0012] Beneficial effects: After this device is applied to the remote alarm system for the use status of low-voltage onshore power socket boxes, the labor cost is reduced to one-third of the original, greatly saving labor costs. And due to the safety and stability in signal transmission, problems can be discovered and processed in the first time, and the equipment guarantee ability is greatly improved, which well contributes to the construction of the company's green wharf. Description of the Drawings

[0013] Figure 1 is the signal acquisition process; Detailed Implementation Modes

[0014] As shown in the figure, a remote monitoring device for the use status of a low-voltage onshore power socket box based on optical fiber communication includes an IOT gateway, a switching power supply, a socket body, a digital input module, a 485 optical modem and a host computer. The IOT gateway is used to connect various IOT devices to achieve interconnection and interoperability between devices. The switching power supply is used to provide a stable DC power supply. The socket body is communicatively connected to the digital input module through an optical fiber link. The digital input module is communicatively connected to the host computer through a 485 optical modem and in cooperation with the optical fiber link. The digital signal of the socket body reaches the digital input module via the optical fiber link and the data is accessed to the host computer through the 485 optical modem.

[0015] It also includes an intermediate relay, which is used to clarify the digital signal of the socket box.

[0016] It also includes a breaker auxiliary contact, which is connected to the indicator light circuit to display the opening and closing status of the breaker.

[0017] This device uses optical fiber communication as the communication cable. By collecting the digital signals (breaker closed status, emergency stop button status, contactor status) of the low-voltage onshore power socket box (hereinafter referred to as "socket box"), and using the Internet of Things monitoring technology, remote monitoring, active alarm, analysis of the fault status and causes of the socket box are realized on the web page, thus greatly reducing the manual inspection cost and maintaining the low-voltage onshore power equipment more timely.

[0018] The communication material itself uses a 12-core optical cable, which has the characteristics of wide bandwidth, fast transmission speed, good confidentiality, anti-electromagnetic field interference, good insulation, long service life, good chemical stability, and low price. It can ensure the signal transmission in the harsh environment of the port.

[0019] The device for signal transmission adopts the (AMD-3320-FC) 485 optical modem, which is professionally designed to solve the communication between RS-485 / 422 serial port signals and optical fiber signals. The optical modem AMD-3320-FC provides transparent data transmission from the RS-485 / 422 serial port to the optical fiber end, and can transmit the serial port signal stably and over a long distance to the remote end. The RS485 optical fiber converter works in a paired manner, and can more conveniently transmit the user's serial port signal through optical fiber transmission and then restore it to a serial port signal. The signal transmitted in the optical fiber is an optical signal, which has no conductivity and is not affected by electromagnetic waves and lightning, so it has strong anti-interference ability. It is especially suitable for use in outdoor occasions with relatively harsh working environments and long distances. It adopts a modular design method, which is convenient for customers to flexibly select or customize the configuration according to specific application situations, and is convenient for users to improve the utilization rate of optical cables; it has the advantages of high integration, small size, low power consumption, reliable operation, convenient installation and use, etc.

[0020] Workflow: Layer 1: Use an intermediate relay to clarify the switching quantity signal of the socket box;

[0021] Layer 2: Transmit the switching quantity signal of the socket box to the switching quantity acquisition module via an optical fiber link, and access the data to the host computer through a 485 optical modem;

[0022] Layer 3: The host computer accesses the collected switching quantity data to the onshore power energy management platform system, and the platform summarizes and presents the data.

[0023] After this technology is applied to the remote alarm system for the use status of low-voltage onshore power socket boxes, the labor cost is reduced to one-third of the original, greatly saving the labor cost. And due to the safety and stability in signal transmission, problems can be discovered and processed in the first time, and the equipment guarantee ability is greatly improved, which well helps the company's construction of a green wharf.

[0024] As is known by technical common sense, the present utility model can be implemented by other embodiments without departing from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and are not the only ones. All changes within the scope of the present utility model or within the scope equivalent to the present utility model are encompassed by the present utility model.

Claims

1. A remote monitoring device for the use status of a low-voltage shore power socket box based on optical fiber communication, characterized in that: It includes an IOT gateway, a switching power supply, a socket body, a switching quantity acquisition module, a 485 optical modem and a host computer. The IOT gateway is used to connect various IoT devices to achieve interconnection between devices. The switching power supply is used to provide a stable DC power supply. The socket body is connected to the switching quantity acquisition module through an optical fiber link. The switching quantity acquisition module is connected to the host computer through a 485 optical modem and in conjunction with an optical fiber link. The switching quantity signal of the socket body is transmitted to the switching quantity acquisition module via the optical fiber link and the data is connected to the host computer through the 485 optical modem.

2. The remote monitoring device for the use status of a low-voltage shore power socket box based on optical fiber communication according to claim 1 is characterized in that: It also includes an intermediate relay, which is used to clarify the switch quantity signal of the socket box.

3. The remote monitoring device for the use status of a low-voltage shore power socket box based on optical fiber communication according to claim 1 is characterized in that: It also includes a circuit breaker auxiliary contact, which is connected to an indicator light circuit to display the opening and closing state of the circuit breaker.

Images