An industrial-grade POE switch with network camera recognition function

Abstract

The present invention provides an industrial-grade POE switch with a network camera identification function, which relates to the technical field of industrial switches. The industrial-grade POE switch includes: a data transmission module, a management module and a power supply module. The data transmission module is used to connect a PC end and multiple cameras; the management module includes an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit. The MCU unit is electrically connected to the data transmission module. The MCU unit is a control unit of the management module. The MCU unit obtains the parameters and port status of the camera according to the IP address of the camera connected to the data transmission module, and identifies and manages each camera; the power supply module is used to supply the working power of the switch. The present invention can obtain the corresponding camera status on the PC end when a camera body or a connection port fails, thereby greatly improving the efficiency of camera management and camera maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial switches, and in particular to an industrial-grade POE switch with a network camera recognition function. Background Art

[0002] In the full IP video surveillance system IPVS in the field of security monitoring, the monitoring system uses optical fiber and POE (Power Over Ethernet) switches to transmit the video image data collected by the camera in the Ethernet, and forms an independent and complete system in the camera to image, display and record. The security system has various measures to protect information, including identity authentication, front-end equipment and access signal sources of the monitoring center. The monitoring system has a password, and only authorized managers can set and operate the system. People without permission will not be able to query the monitoring system, set the system, delete files, etc.

[0003] Ethernet POE switches connect cameras, background control systems and other functional units that need to be interconnected. Cameras and switches are indispensable products in the monitoring system and undertake the important mission of data collection, storage and transmission.

[0004] When the network is deployed on site, switches and cameras are exposed to the harsh outdoor temperature and humidity environment for a long time, which causes the metal part of the network interface connector to oxidize, or is subjected to other external forces, causing the network cable crystal head to fall off, or the camera body function fails, or the power supply system fails. All of these will cause the video data collected by the camera to be unable to be sent back to the control center normally, and it cannot be seen from the appearance of the camera, and it is impossible to determine whether it is a transmission problem or a camera problem. It is necessary to use special instruments to detect or use special tools to log in to the network device and enter special operating instructions to detect the network. At the same time, the use of a large number of cameras on the project site, and the wide geographical distance between these cameras makes it difficult for on-site maintenance personnel to troubleshoot problems after camera data transmission problems occur, which brings great difficulties and inconvenience to on-site maintenance personnel. Summary of the invention

[0005] In response to the above technical problems, the purpose of the present invention is to provide an industrial-grade POE switch with a network camera recognition function, which can enable the corresponding camera status to be obtained on the PC side when a failure occurs in the camera body or the connection port, thereby greatly improving the efficiency of camera management and camera maintenance.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides an industrial-grade POE switch with a network camera recognition function, comprising:

[0008] A data transmission module, the data transmission module is used to connect a PC end and multiple cameras;

[0009] A management module, the management module includes an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, the MCU unit is electrically connected to the data transmission module, and the MCU unit is electrically connected to the RMII bus interface unit, the EEPROM storage circuit and the password verification unit respectively; the MCU unit is a control unit of the management module, the MCU unit obtains the parameters of the camera according to the IP address of the camera connected to the data transmission module, the EEPROM storage circuit stores the parameters configured by the switch, the password verification unit authorizes the visitor, the RMII bus interface unit includes a data interface, and a management interface between the MCU unit and the PHY chip, the data interface includes two independent channels for sending and receiving, and the clock source is obtained through an external 50MHZ signal or from the MCU unit, and the same clock source is connected to the REF_CLK pins of the MCU unit and the PHY chip;

[0010] A power supply module, wherein the power supply module is electrically connected to the data transmission module and the management module respectively, and the power supply module is used to supply working power to the switch.

[0011] Preferably, the data transmission module comprises: a PHY chip, an optical fiber interface and a plurality of RJ45 interfaces, and the PHY chip is electrically connected to the optical fiber interface and the plurality of RJ45 interfaces respectively.

[0012] Preferably, the power supply module is electrically connected to the PHY chip, the PHY chip is electrically connected to the MCU unit, and the MCU unit obtains the power supply status of the power supply module.

[0013] Preferably, the management module also includes an RST reset circuit, and a reset switch is provided on the RST reset circuit, which can realize a reset function or a factory reset function by controlling the reset time, and the RST reset circuit is electrically connected to the MCU unit.

[0014] Preferably, the management module further comprises a JTAG debugging interface, and the JTAG debugging interface is used for connecting an external debugging device.

[0015] Preferably, the management module also includes a POE management circuit, which manages the power supply of each port of the switch, displays the voltage and current of each port, and the load power parameters, and is designed with an alarm strategy to monitor the working status of the camera from the POE power supply aspect. The POE management circuit is electrically connected to the MCU unit, and is used to send a warning signal when a power failure occurs to the camera.

[0016] Preferably, the switch also includes a built-in serial port server, in which the TCP / IP protocol stack is embedded, and then the serial port data is encapsulated into network port data for transmission. The switch is electrically connected to the RS232 transceiver through the UART interface, and the RS232 transceiver is connected to the PC through the CONSOLE interface.

[0017] Preferably, an embedded software design architecture is added to the switch management module, and users of the network management system using embedded Web technology can remotely access the camera management interface of the industrial switch through a browser, thereby realizing remote identification and monitoring of the camera based on the camera's working status.

[0018] The beneficial effects of the present invention are as follows: the present invention provides an industrial-grade POE switch with a network camera identification function, comprising: a data transmission module, the data transmission module is used to connect a PC end and multiple cameras; a management module, the management module comprises an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, the MCU unit is electrically connected to the data transmission module, the MCU unit is electrically connected to the RMII bus interface unit, the EEPROM storage circuit and the password verification unit respectively; the MCU unit is a control unit of the management module, the MCU unit is based on the IP address of the camera connected to the data transmission module The parameters of the camera are obtained through the address, the EEPROM storage circuit stores the parameters configured by the switch, the password verification unit authorizes the visitor, the RMII bus interface unit includes a data interface, and a management interface between the MCU unit and the PHY chip, the data interface includes two independent channels for sending and receiving, and the clock source is obtained through an external 50MHZ signal or from the MCU unit, and the same clock source is connected to the REF_CLK pin of the MCU unit and the PHY chip; a power supply module, the power supply module is electrically connected to the data transmission module and the management module respectively, and the power supply module is used to supply the working power of the switch. The present invention can obtain the corresponding camera status on the PC side when a camera body or a connection port fails, thereby greatly improving the efficiency of camera management and camera maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the frame structure of a switch is shown;

[0021] Figure 2 A schematic diagram of the circuit structure of the MCU unit (MAC) is shown;

[0022] Figure 3 The schematic diagram of the circuit structure of the password verification unit and the CONSOLE interface is shown;

[0023] Figure 4 Shows a schematic diagram of the circuit structure of the RST reset circuit and the serial interface;

[0024] Figure 5 Shows a schematic diagram of the circuit structure of POE management;

[0025] Figure 6 A schematic diagram of the circuit structure of a PHY chip is shown;

[0026] Figure 7 The schematic diagram of the power supply module is shown;

[0027] Figure 8 A schematic diagram of the circuit structure of the optical fiber interface is shown;

[0028] Fig. 9 A schematic diagram of the circuit connection of the power supply module is shown;

[0029] Fig.10 A schematic diagram of the ONVUF protocol software architecture is shown;

[0030] Fig.11 A schematic diagram showing camera management and alarm settings on the WEB network management page is shown;

[0031] Fig.12 It shows a schematic diagram of the WEB network management page switching port and POE port alarm and UDP server IP settings.

[0032] In the figure: 100, data transmission module, 200, management module, 300, power supply module. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] See also Figure 1The present invention provides an industrial-grade POE switch (hereinafter referred to as the switch) with a network camera identification function, wherein the switch includes a data transmission module 100, a management module 200 and a power supply module 300, wherein the data transmission module 100 is used to connect a PC end and multiple cameras, the management module 200 is electrically connected to the data transmission module 100, the management module 200 is used to identify and manage the cameras, the power supply module 300 is electrically connected to the data transmission module 100 and the management module 200 respectively, and the power supply module 300 is used to supply working power to the switch.

[0039] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 Specifically, the management module 200 includes an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit. The MCU unit is a MAC. The MCU unit is electrically connected to the data transmission module, wherein the MCU unit is electrically connected to the RMII bus interface unit, the EEPROM storage circuit and the password verification unit respectively. The MCU unit is a control unit of the management module 200. The MCU unit can obtain the camera parameters according to the IP address of the camera connected to the data transmission module 100. The EEPROM storage circuit is used to store the parameters configured by the industrial switch. The password verification unit authorizes visitors. The RMII bus interface unit includes a data interface and a management interface between a MAC and a PHY chip. The data interface includes two independent channels for sending and receiving. The clock source is obtained through an external 50MHZ signal or from the MAC. The same clock source is connected to the REF_CLK pin of the MAC and PHY chip to ensure the synchronization of the clock sources of the two. The RMII data interface requires a total of 7 signals. The management module can parse and process the protocol data packets forwarded by the switching port to obtain various parameters of the bound camera and real-time monitoring of the port operation status.

[0040] A power supply module, wherein the power supply module is electrically connected to the data transmission module and the management module respectively, and the power supply module is used to supply working power to the switch.

[0041] It can be understood that the data transmission module 100 is connected to multiple cameras and PCs at the same time, and the video and image data transmitted by different cameras can be obtained through the PC. On this basis, the IP address will be set when the camera connection is set, and the MCU unit on the management module 200 can obtain the corresponding camera parameters according to the set IP address. Before that, of course, the user needs to obtain authorization from the relevant password verification unit to access the camera IP address and parameters.

[0042] Preferably, the password verification unit of the camera adopts a digital password. Through the switch-related WEB network management page, the user can log in the camera's username and password after being authorized, and the switch can automatically search and display the pixels, manufacturer, model and other parameters of the bound camera, and display the relevant parameters on the relevant web page. In addition, when the camera body function has transmission problems, an alarm prompt is issued on the PC. Further, the user displays the set control center IP address through the management interface on the PC, and automatically uploads the unrecognizable camera information to the control center in real time in the form of UDP protocol, so that the operating status of each camera can be monitored in real time.

[0043] Furthermore, an embedded software design architecture is added to the industrial switch management module to enable users of the network management system using embedded Web technology, that is, through a browser, to remotely access the camera management interface of the industrial switch, and to remotely identify and monitor the camera based on the camera's working status. The principle is based on the ONVIF protocol standard.

[0044] See also Figure 1 , Fig.10 and Fig.11 , according to the camera IP (Web Services address) set on the port of the industrial switch, the GetDeviceInformation interface of the ONVIF standard is called, and the camera username and password authentication information are carried, and a request data packet is sent to the camera. The TCP / IP protocol is used to transmit the identified video data over the network to complete the request and authentication process.

[0045] If the industrial switch is authenticated and authorized, it will further obtain the GetDeviceInformation interface feedback response data packet of the ONVIF standard, parse the corresponding data packet and obtain the relevant device parameters of the camera. If the response fails, the network management system will automatically send an alarm message to the control center of the PC in real time.

[0046] In the above scheme, the camera is identified and monitored through the management module 200, which not only ensures the security of the camera data transmission, but also improves the maintenance efficiency of the camera, realizes remote and accurate judgment of the functional failure of the camera, and brings great convenience to the operation and maintenance in the security monitoring field.

[0047] The MCU unit uses the management chip model STM207, and the password verification unit uses the chip model SLS-1DERE.

[0048] It should be explained that EEPROM storage circuit (Electrically Erasable Programmable Read Only Memory) refers to an electrically erasable programmable read-only memory, which includes an EEPROM storage chip whose data is not lost after power failure. EEPROM can erase existing information on a computer or dedicated equipment, and then reprogram it.

[0049] For further information, see Figure 6 , Figure 8 and Fig.12 On the basis of the above solution, the data transmission module 100 includes a PHY chip, an optical fiber interface and a plurality of RJ45 interfaces, and the optical fiber interface and the plurality of RJ45 interfaces are electrically connected to the PHY chip.

[0050] The optical fiber interface is used to connect the optical fiber data transmission line, and the multiple RJ45 interfaces are used to connect the PC and multiple cameras.

[0051] Furthermore, the power supply module is electrically connected to the PHY chip, and the PHY chip is electrically connected to the MCU unit. The MCU unit obtains the power supply status of the power supply module 300, and can further monitor the connection port of the camera. When the physical connection of the camera fails (poor port contact, interface aging resulting in no power, etc.), the management module 200 can automatically upload the problematic port connection status information to the PC in real time via the UDP protocol, thereby enabling the operation monitoring of the camera to be realized.

[0052] In the above solution, the industrial switch can not only identify and monitor the operating status of each camera, but also monitor the interface connection status between the camera and the industrial switch. When the camera body fails or its connection port fails, a corresponding alarm notification and the location of the corresponding camera can be issued on the PC, which can greatly improve the work efficiency of the camera data collection operation and the convenience of camera maintenance.

[0053] See also Figure 1 , Figure 7 and Fig. 9 In the above scheme, the power supply module 300 includes a DC-DC controller 1, a DC-DC controller 2, a DC-DC controller 3, a DC-DC controller 4 and an LDO. The DC-DC controller 1 is used to step down and stabilize the input voltage 48V to 12V, and the DC-DC controller 2 is used to step down and stabilize the input voltage 12V to 3.3V, thereby being able to power the MCU unit and the PHY chip.

[0054] The input voltage 12V of DC-DC controller 3 is stepped down and stabilized to 1.5V, which can power the PHY chip. The input voltage 12V of DC-DC controller 4 is stepped down and stabilized to 1.0V, which can power the PHY chip. The 3.3V is stepped down to 2.5V through LDO, which can power the PHY chip.

[0055] For further information, see Figure 1 , Figure 2 and Figure 5 On the basis of the above solution, the management module 200 further includes an RST reset circuit, a JTAG debugging interface and a low voltage warning circuit. The RST reset circuit, the JTAG debugging interface and the POE management circuit are all electrically connected to the MCU unit.

[0056] Furthermore, the management module also includes an RST reset circuit, which is provided with a reset switch. The RST reset circuit can realize the reset function or restore the factory settings function by controlling the reset time. The RST reset circuit is electrically connected to the MCU unit and can reset the industrial switch when it is stuck or the data transmission fails.

[0057] Furthermore, the management module also includes a JTAG debugging interface, and the JTAG debugging interface is used for external debugging equipment. The protocol data packet forwarding delay can be adjusted by adjusting the debugging equipment, so that the camera can be better identified and monitored.

[0058] Furthermore, the management module also includes a POE management circuit, which can manage the power supply of each port of the switch, and display the voltage, current, load power and other parameters of each port, and can remotely determine whether the port power supply status is abnormal in real time, and is designed with an alarm strategy. The POE management circuit is electrically connected to the MCU unit, and the POE management circuit is used to send a warning signal when a power failure occurs in the camera. When a power failure occurs in the industrial switch or a connection failure occurs in the camera port connected to it, the fault port data can be sent to the management interface of the PC, thereby effectively improving the management efficiency of the camera operation.

[0059] For further information, please refer to Figure 4 The industrial switch also includes a built-in serial port server function, in which the TCP / IP protocol stack is embedded, and then the serial port data is encapsulated into network port data for transmission to achieve bidirectional transparent transmission of data between the RS-232 / 485 serial port and the TCP / IP network interface. The switch is electrically connected to the RS232 transceiver through the UART interface, and the RS232 transceiver is connected to the PC through the CONSOLE interface.

[0060] The present invention provides an industrial-grade POE switch with a network camera identification function, comprising: a data transmission module, the data transmission module is used to connect a PC end and multiple cameras; a management module, the management module comprises an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, the MCU unit is electrically connected to the data transmission module, the MCU unit is electrically connected to the RMII bus interface unit, the EEPROM storage circuit and the password verification unit respectively; the MCU unit is a control unit of the management module, and the MCU unit obtains the IP address of the camera connected to the data transmission module according to the IP address of the camera. The parameters of the camera, the EEPROM storage circuit stores the parameters configured by the switch, the password verification unit authorizes the visitor, the RMII bus interface unit includes a data interface, and a management interface between the MCU unit and the PHY chip, the data interface includes two independent channels for sending and receiving, and the clock source is obtained through an external 50MHZ signal or from the MCU unit, and the same clock source is connected to the REF_CLK pin of the MCU unit and the PHY chip; the power supply module, the power supply module is electrically connected to the data transmission module and the management module respectively, and the power supply module is used to supply the working power of the switch. The present invention can obtain the corresponding camera status on the PC side when the camera body or the connection port fails, thereby greatly improving the efficiency of camera management and camera maintenance.

[0061] It is understandable that the PC can be connected not only through the RJ45 interface, but also through the CONSOLE interface.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An industrial-grade POE switch with network camera recognition function, characterized in that: include: A data transmission module, the data transmission module is used to connect a PC end and multiple cameras; A management module, the management module includes an MCU unit, an RMII bus interface unit, an EEPROM storage circuit and a password verification unit, the MCU unit is electrically connected to the data transmission module, and the MCU unit is electrically connected to the RMII bus interface unit, the EEPROM storage circuit and the password verification unit respectively; the MCU unit is a control unit of the management module, the MCU unit obtains the parameters of the camera according to the IP address of the camera connected to the data transmission module, the EEPROM storage circuit stores the parameters configured by the switch, the password verification unit authorizes the visitor, the RMII bus interface unit includes a data interface, and a management interface between the MCU unit and the PHY chip, the data interface includes two independent channels for sending and receiving, and the clock source is obtained through an external 50MHZ signal or from the MCU unit, and the same clock source is connected to the REF_CLK pins of the MCU unit and the PHY chip; A power supply module, the power supply module is electrically connected to the data transmission module and the management module respectively, and the power supply module is used to supply working power to the switch; The switch also includes a built-in serial port server, in which the TCP / IP protocol stack is embedded, and then the serial port data is encapsulated into network port data for transmission. The switch is electrically connected to the RS232 transceiver through the UART interface, and the RS232 transceiver is connected to the PC through the CONSOLE interface; An embedded software design architecture is added to the management module, and users of the network management system using embedded Web technology can remotely access the camera management interface of the industrial-grade POE switch through a browser, and realize remote identification and monitoring of the camera based on the camera's working status.

2. The industrial-grade POE switch with network camera recognition function according to claim 1, characterized in that: The data transmission module comprises: a PHY chip, an optical fiber interface and a plurality of RJ45 interfaces, and the PHY chip is electrically connected to the optical fiber interface and the plurality of RJ45 interfaces respectively.

3. The industrial-grade POE switch with network camera recognition function according to claim 2, characterized in that: The power supply module is electrically connected to the PHY chip, the PHY chip is electrically connected to the MCU unit, and the MCU unit obtains the power supply status of the power supply module.

4. The industrial-grade POE switch with network camera recognition function according to claim 1, characterized in that: The management module also includes an RST reset circuit, on which a reset switch is provided, and a reset function or a factory reset function can be realized by controlling the reset time, and the RST reset circuit is electrically connected to the MCU unit.

5. The industrial-grade POE switch with network camera recognition function according to claim 4, characterized in that: The management module also includes a JTAG debugging interface, and the JTAG debugging interface is used for connecting an external debugging device.

6. The industrial-grade POE switch with network camera recognition function according to claim 5, characterized in that: The management module also includes a POE management circuit, which manages the power supply of each port of the switch, displays the voltage and current of each port, and the load power parameters, and is designed with an alarm strategy to monitor the working status of the camera from the POE power supply aspect. The POE management circuit is electrically connected to the MCU unit, and is used to send a warning signal when a power failure occurs to the camera.

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