TWI716072B - Apparatus of media conversion with power control - Google Patents

Abstract

The present invention discloses a power control type media conversion device, which includes at least one transmission power supply interface, a network power supply module, a control unit, a network media interface and a packet switch. The network power supply module is electrically connected to a network power receiving device through the transmission power supply interface, the control unit is electrically connected to the network power supply module, the network media interface is electrically connected to a network switch, and the packet switch is electrically connected to transmit power Interface, network media interface and control unit. The network media interface generates a status signal according to the communication state between the packet switch and the network switch, and sends this to the control unit to determine whether to drive the network power supply module to supply power to the network through the transmission power supply interface Device, so that the administrator can take measures to power off and restore power to the network power receiving device when not on site.

Description

Power control type media conversion device

The present invention relates to a conversion device, and more particularly to a power control type media conversion device.

In Ethernet applications, to provide long-distance data connections, Ethernet Media Converters, such as Fiber Media Converters, are used to extend the network connection distance.

As shown in Figure 1, a network switch 10 is connected to a media converter 12 through a long-distance optical fiber line, and then converted into a twisted pair to be serially connected to a network power receiving device 14, such as a personal computer, a network switch, IP camera or wireless access point, in which the media converter 12 is powered by a power supply 16. In the application of webcams, the camera may crash or not respond due to unknown reasons, such as memory overflow. At this time, the administrator in the remote control room may respond through the Simple Network Management Protocol (SNMP) or end users. If the wireless base station or IP camera is ignoring the video image, it needs to be dealt with. Such as shutting down or restarting the machine. In the past, if it is a device without any management method, or a device that can be managed but cannot be managed due to external forces or force majeure, and the machine is built in a remote place, it will be time-consuming and laborious for the manager to handle it and cannot be solved immediately , The impact may be the loss of the monitoring screen, or there is no wireless base station for wireless network data access for a long time, and The loss will vary depending on its application.

Therefore, the present invention aims to solve the above-mentioned problems and proposes a power-controlled media conversion device to solve the conventional problems.

The main purpose of the present invention is to provide a power-controlled media conversion device, which immediately orders the network power supply module to stop power supply when the control unit detects that the network media interface is disconnected. Once the line is restored, the control unit immediately cancels the order to stop the power supply, so that even if the manager is not on site, it can still perform necessary power-off and power-recovery measures.

To achieve the above objective, the present invention provides a power-controlled media conversion device, which includes at least one transmission power supply interface, a network power supply module, a control unit, a network media interface and a packet switch. The transmission power supply interface is electrically connected to a network power receiving device, the network power supply module is electrically connected to the transmission power supply interface, the control unit is electrically connected to the network power supply module, and the network media interface is electrically connected to a network switch, packet switching The device is electrically connected to the transmission power supply interface, the network media interface and the control unit. The network media interface generates a status signal according to the communication status between the packet switch and the network switch, and sends this to the control unit. The control unit determines whether to drive the network power supply module to supply power through the transmission power supply interface according to the status signal To the network receiving device.

In an embodiment of the present invention, when the communication state is the connection state, the control unit drives the network power supply module to supply power to the network power receiving device through the transmission power supply interface, and the control unit drives the packet switch to communicate with the network through the transmission power supply interface The power receiving device performs packet exchange.

In an embodiment of the present invention, when the communication state changes from the connected state to the disconnected state, the control unit stops driving the network power supply module to supply power to the network power receiving device through the transmission power supply interface, and the control unit stops driving the packet switch It exchanges packets with network-powered devices through the transmission and power supply interface.

In an embodiment of the present invention, the power-controlled media conversion device further includes a power supply, which is electrically connected to the control unit, the packet switch and the network power supply module. The power supply receives the DC voltage and borrows This power is supplied to the control unit, packet switch and network power supply module.

In an embodiment of the present invention, the network media interface transmits the status signal to the control unit through the packet switch.

In an embodiment of the present invention, the network media interface is electrically connected to the control unit, and the network media interface directly transmits the status signal to the control unit.

In an embodiment of the present invention, the transmission and power supply interface is a registered jack 45 (RJ45) port.

In an embodiment of the present invention, the network media interface is an optical fiber interface, a coaxial cable interface, a telephone line interface, or a registered jack 45 (RJ45) twisted pair interface.

In an embodiment of the present invention, the network power receiving device is a computer, a network switch, a network camera, or a network wireless access device.

In an embodiment of the present invention, the control unit is a central processing unit (CPU) or a micro control unit (MCU).

In order to enable your reviewer to have a better understanding and understanding of the structural features of the present invention and the effects achieved, I would like to provide a preferred embodiment diagram and detailed descriptions. The description is as follows:

10: Network switch

12: Media converter

14: Network powered device

16: power supply

18: Power-controlled media conversion device

20: Transmission power supply interface

22: Network power supply module

24: control unit

26: Network Media Interface

28: packet switch

30: power supply

32: DIP switch

34: Network powered device

36: network switch

Figure 1 is a circuit block diagram of a prior art network switch, media converter, network power receiving device and power supply.

Figure 2 is a circuit block diagram of the first embodiment of the power-controlled media conversion device of the present invention.

Figure 3 is a circuit block diagram of the second embodiment of the power-controlled media conversion device of the present invention.

The embodiments of the present invention will be further explained by following relevant drawings. As far as possible, in the drawings and description, the same reference numerals represent the same or similar components. In the drawings, the shape and thickness may be exaggerated for simplicity and convenience. It can be understood that the elements not particularly shown in the drawings or described in the specification are in the form known to those skilled in the art. Those skilled in the art can make various changes and modifications based on the content of the present invention.

The following description of "one embodiment" or "an embodiment" refers to at least one specific element, structure, or feature related to the embodiment. Therefore, multiple descriptions of "one embodiment" or "an embodiment" appearing in various places below are not directed to the same embodiment. Furthermore, specific components, structures and features in one or more embodiments can be combined in an appropriate manner.

The present invention utilizes a control unit that is lower in cost and is not affected by circuit complexity, operating system or network packets for detection management. When the network media interface detects the disconnection status, the control unit orders the network power receiving device to be powered off. When the disconnected state is restored to the connected state, the control unit orders the restoration of power to the network power receiving device. Therefore, it is possible to restart the power supply of the network power supply when the person is not on site. If the power-controlled media conversion device is connected to the network power receiving device through a twisted pair cable and connected to the network switch through an optical fiber line, the recovery speed of the optical fiber line is much higher than the restart speed of the network power receiving device, so it will not affect The problem of data return, such as the distortion of the video image of the camera.

The present invention uses the logic or physical disconnection of the long-distance end to allow the control unit in the power-controlled media conversion device to perform a simple circuit reset operation after detecting an abnormality to allow the power The source-controlled media conversion device can know the abnormality of the equipment connected at the other end to reset the power supply mechanism of the network interface. The biggest advantage is that the network power receiving device to be reset is in a remote or hard-to-reach place. It is difficult to access, and the network-powered device cannot be reset by other management methods.

Please refer to Figure 2 below and introduce the first embodiment of the power-controlled media conversion device of the present invention. The power-controlled media conversion device 18 includes at least one transmission power supply interface 20, a network power supply module 22, a control unit 24, a network media interface 26, a packet switch 28, a power supply 30, and a DIP switch 32. For example, the network power supply module 22 conforms to the IEEE802.3af/at/bt standard, the transmission power supply interface 20 is a registered jack 45 (RJ45) port, and the network media interface 26 is a fiber interface, coaxial Cable interface, telephone line interface or registered jack 45 (RJ45) twisted pair interface to connect the long-distance end of the line. There may be a plurality of transmission and power supply interfaces 20, and one is taken as an example here. The transmission and power supply interface 20 is electrically connected to a network power receiving device 34, such as a computer, a network switch, a network camera or a network wireless access device. The network power supply module 22 is electrically connected to the transmission power supply interface 20, the control unit 24 is electrically connected to the network power supply module 22, the network media interface 26 is electrically connected to a network switch 36, and the packet switch 28 is electrically connected to the transmission The power supply interface 20, the network media interface 26 and the control unit 24. The network media interface 26 generates a status signal S according to the communication status between the packet switch 28 and the network switch 36, and transmits the status signal S to the control unit 24 through the packet switch 28, and the control unit 24 responds to the status signal S determines whether to drive the network power supply module 22 to supply power to the network power receiving device 34 through the transmission power supply interface 20. The power supply 30 is electrically connected to the control unit 24, the packet switch 28 and the network power supply module 22. The power supply 30 receives a direct current voltage DC and thereby supplies power to the control unit 24, the packet switch 28 and the network. The module 22, the control unit 24, and the packet switch 28 can obtain 1.1, 1.8 or 3.3 volts, and the network power supply module 22 can obtain 48~56 volts in compliance with the IEEE802.3at/bt standard. In addition, the control unit 24 may be a central processing unit (CPU) or a micro control unit (MCU). MCU is a simple control processing unit Ministry of influence, and lower cost, faster development. Because there is no physical line for transmitting packets between the control unit 24 and the packet switch 28 of the present invention, the control unit 24 will not issue a command to the network power supply module 22 to power off and restore power due to too frequent broadcast packets. The speed is delayed. When the dip switch 32 is turned on, the control unit 24 detects the status signal S, and determines whether to drive the network power supply module 22 to supply power to the network power receiving device 34 through the transmission power supply interface 20 according to this. When the dip switch 32 is turned off, the control unit 24 stops detecting the state signal S.

In the first embodiment, when the dip switch 32 is closed, the control unit 24 stops detecting the status signal S, the control unit 24 drives the network power supply module 22 to supply power to the packet switch 28, and drives the network power supply module 22 Power is supplied to the network power receiving device 34 through the transmission and power supply interface 20, and the control unit 24 drives the packet switch 28 to exchange packets with the network power receiving device 34 through the transmission and power supply interface 20. When the dip switch 32 is on, the control unit 24 stops driving the network power supply module 22 to supply power to the network power receiving device 34 through the transmission power supply interface 20, and the control unit 24 stops driving the packet switch 28 to connect to the network through the transmission power interface 20 The power receiving device 34 performs packet exchange. Then, the control unit 24 detects the status signal S. When the communication state between the packet switch 28 and the network switch 36 is in the connected state, the control unit 24 drives the network power supply module 22 to supply power to the network power receiving device 34 through the transmission power supply interface 20, and the control unit 24 drives The packet switch 28 exchanges packets with the network power receiving device 34 through the transmission and power supply interface 20, and the network power supply module 22 conforms to the IEEE802.3af/at/bt or above protocol. When the communication state between the packet switch 28 and the network switch 36 changes from the connected state to the disconnected state, the control unit 24 stops driving the network power supply module 22 to supply power to the network power receiving device 34 through the transmission power supply interface 20 , And the control unit 24 stops driving the packet switch 28 to exchange packets with the network power receiving device 34 through the transmission and power supply interface 20. In the above-mentioned control of the DIP switch 32, the DIP switch 32 can also be plural, and the transmission and power supply interface 20 and the network power receiving device 34 are also plural, so that the transmission and power supply interface 20 is electrically connected to the network power receiving device 34, and All DIP switches 32 correspond to all transmission The electrical interface 20 controls the power supply of all the network power receiving devices 34 respectively. In other words, the present invention immediately orders the network power supply module 22 to stop power supply when the control unit 24 detects that the network media interface 26 is disconnected. Once the line is restored, the control unit 24 immediately cancels the order to stop the power supply, so that even if the manager is not on site, the necessary power-off and power-recovery measures can still be taken.

The network media interface 26 may be a small form-factor pluggable transceiver (SFP), in which the eighth pin is a receive loss of signal indication (receive loss of signal indication), but the present invention does not Limited to this. When the transceiver loses the signal, the pin will have an output voltage to indicate that the optical receiving end of the transceiver cannot be detected. This situation may be the physical circuit break or the transmitter is turned off, or the light source signal intensity of the counterpart transmitter If the intensity is lower than this receiver can receive, it may be the optical transmitter failure or the optical fiber line is too long. The present invention connects the eighth pin to the digital input interface of the control unit 24, so once the interface has a voltage output, the control unit 24 will determine that the connection is lost.

Please refer to Fig. 3 below and introduce the second embodiment of the power-controlled media conversion device of the present invention. The difference between the second embodiment and the first embodiment is that the network media interface 26 of the second embodiment is electrically connected to the control unit 24, and the network media interface 26 directly transmits the status signal S to the control unit 24 instead of passing through the packet switch 28 The way of transmitting the status signal S to the control unit 24 can achieve the same purpose at the same time.

In summary, the present invention immediately orders the network power supply module to stop power supply when the control unit detects that there is a disconnection on the network media interface. Once the line is restored, the control unit immediately cancels the order to stop the power supply, so that even if the manager is not on site, it can still perform necessary power-off and power-recovery measures.

The above is only a preferred embodiment of the present invention, and is not used to limit the scope of implementation of the present invention. Therefore, all the shapes, structures, characteristics and spirits described in the scope of the patent application of the present invention are equally changed and modified. , Should be included in the scope of patent application of the present invention.

18: Power-controlled media conversion device

20: Transmission power supply interface

22: Network power supply module

24: control unit

26: Network Media Interface

28: packet switch

30: power supply

32: DIP switch

34: Network powered device

36: network switch

Claims (10)

A power control type media conversion device includes: at least one transmission power supply interface electrically connected to a network power receiving device; a network power supply module electrically connected to the at least one transmission power supply interface; a control unit electrically connected to the Network power supply module; a network media interface electrically connected to a network switch; and a packet switch electrically connected to the at least one transmission power supply interface, the network media interface and the control unit, the network The media interface generates a status signal according to the communication status between the packet switch and the network switch, and sends this to the control unit. The control unit determines whether to drive the network power supply module according to the status signal. The at least one transmission and power supply interface supplies power to the network power receiving device. The power-controlled media conversion device according to claim 1, wherein when the communication state is a connection state, the control unit drives the network power supply module to supply power to the network power receiving device through the at least one transmission power supply interface, and The control unit drives the packet switch to exchange packets with the network power receiving device through the at least one transmission and power supply interface. The power-controlled media conversion device according to claim 2, wherein when the communication state changes from the connection state to the disconnection state, the control unit stops driving the network power supply module to supply power to the network through the at least one transmission power supply interface The network power receiving device, and the control unit stops driving the packet switch to perform the packet exchange with the network power receiving device through the at least one transmission and power supply interface. The power-controlled media conversion device according to claim 1, further comprising a power supply, which is electrically connected to the control unit, the packet switch and the network for power supply Module, the power supply receives a DC voltage, and thereby supplies power to the control unit, the packet switch and the network power supply module. The power-controlled media conversion device according to claim 1, wherein the network media interface transmits the status signal to the control unit through the packet switch. The power control type media conversion device according to claim 1, wherein the network media interface is electrically connected to the control unit, and the network media interface directly transmits the status signal to the control unit. The power control type media conversion device according to claim 1, wherein the at least one transmission and power supply interface is a registered jack 45 (RJ45) port. The power-controlled media conversion device according to claim 1, wherein the network media interface is an optical fiber interface, a coaxial cable interface, a telephone line interface or a registered jack 45 (RJ45) twisted pair interface. The power-controlled media conversion device according to claim 1, wherein the network power receiving device is a computer, a network switch, a network camera or a network wireless access device. The power-controlled media conversion device according to claim 1, wherein the control unit is a central processing unit (CPU) or a micro control unit (MCU).

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