CN210225433U - Communication switcher and electronic equipment based on power over Ethernet - Google Patents
Communication switcher and electronic equipment based on power over Ethernet Download PDFInfo
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- CN210225433U CN210225433U CN201921595046.7U CN201921595046U CN210225433U CN 210225433 U CN210225433 U CN 210225433U CN 201921595046 U CN201921595046 U CN 201921595046U CN 210225433 U CN210225433 U CN 210225433U
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Abstract
The utility model provides a communication switch and electronic equipment based on power over ethernet, wherein, communication switch based on power over ethernet includes: the system comprises a switching module, a control module, a first interface, a second interface and a third interface; the first interface, the second interface and the third interface can be used for transmitting communication signals and power signals; the control module is used for generating a switching signal and sending the switching signal to the switching module; the switching module is used for switching between two connection relations of the first interface and the third interface and between the second interface and the third interface according to the switching signal. The utility model provides a communication switch and electronic equipment based on ethernet power supply can overcome the comparatively single problem of current switch function.
Description
Technical Field
The present invention relates to electronic technologies, and in particular, to a communication switch and an electronic device based on power over ethernet.
Background
At present, with the continuous development and popularization of electronic technology and network technology, the requirement of users for the communication quality supported by each device in the communication system is higher and higher, which requires that the communication system can still keep complete and stable operation when the device of a certain node in the communication system is in failure.
In the prior art, for devices that may have problems in a communication system, a primary and standby hot backup redundancy mode is adopted in design, that is, once one device fails during operation, the device may be switched and switched to another standby device to replace the failed device to continue operating, so as to improve the reliability of the communication system.
However, in the prior art, the switch can only be applied to switch between devices with a single function, for example, the switch can switch between devices simply and directly, which results in the switch with a single function in the prior art.
Disclosure of Invention
The invention provides a communication switcher and electronic equipment based on power over Ethernet, which are used for overcoming the problem that the function of the existing switcher is single, so that the switcher can be applied to equipment capable of simultaneously transmitting communication signals and power signals, and the switching of the communication signals and the power signals can be realized when the switcher is switched.
A first aspect of the present invention provides a power over ethernet based communication switch, comprising:
the system comprises a switching module, a control module, a first interface, a second interface and a third interface; the first interface is connected with first equipment, the second interface is connected with second equipment, the third interface is connected with third equipment, and the first equipment and the second equipment are mutually main and standby equipment; the first interface, the second interface and the third interface can be used for transmitting communication signals and power signals;
the control module is used for generating a switching signal and sending the switching signal to the switching module;
the switching module is used for switching between two connection relations of the first interface and the third interface and between the second interface and the third interface according to the switching signal.
In an embodiment of the first aspect of the present invention, the control module comprises: a first key and a second key;
the control module is specifically used for generating a first switching signal when the first key is detected to be pressed, wherein the first switching signal is used for indicating the switching module to switch to the connection relation between the first interface and the third interface;
the control module is specifically configured to generate a second switching signal when it is detected that the second key is pressed, where the second switching signal is used to indicate that the switching module switches to the connection relationship between the second interface and the third interface.
In an embodiment of the first aspect of the present invention, the control module comprises: a detection circuit;
the detection circuit is used for generating a second switching signal when the first interface and the third interface have a connection relation and the input signal of the first interface is detected to be abnormal;
the detection circuit is used for generating a first switching signal when the second interface and the third interface have a connection relation and the input signal of the second interface is detected to be abnormal.
In an embodiment of the first aspect of the present invention, the switching module includes: a communication signal switching circuit and a power signal switching circuit.
The communication signal switching circuit is used for switching between two connection relations of a communication signal of the first interface and a communication signal of the third interface and a communication signal of the second interface and a communication signal of the third interface according to a switching signal;
the power signal switching circuit is used for switching between two connection relations of the power signal of the first interface and the power signal of the third interface and the power signal of the second interface and the power signal of the third interface according to the switching signal.
In the first embodiment of the first aspect of the present invention, the communication signal switching circuit is connected to the first device, the second device, and the third device through pins No. 1, No. 2, No. 3, and No. 6 of the RJ45 network cable in the first interface, the second interface, and the third interface, respectively;
the power signal switching circuit is connected with the first equipment, the second equipment and the third equipment through No. 4 pins and No. 5 pins of RJ45 network cables in the first interface, the second interface and the third interface respectively.
In an embodiment of the first aspect of the present invention, a power signal switching circuit includes: a triode and a relay; the base electrode of the triode is connected with the control module and is used for receiving a first switching signal or a second switching signal sent by the control module; the collector of the triode is connected with the power supply of the relay through the coil of the relay; the emitter of the triode is grounded; the normally open contact and the normally closed contact of the relay are respectively connected with the first equipment and the second equipment, and the armature of the relay is connected with the third equipment.
In an embodiment of the first aspect of the present invention, the communication signal switching circuit includes: and the four-way selection switch is used for receiving the first switching signal or the second switching signal sent by the control module and controlling the four-way selection switch to be switched on or switched off through the first switching signal or the second switching signal.
In an embodiment of the first aspect of the present invention, the control module further includes: a first indicator light and a second indicator light; when the first interface and the third interface are in a connection relation, the first indicator light is in a lighting state, and the second indicator light is in a turning-off state; when the second interface and the third interface are in a connection relation, the first indicator light is in an off state, and the second indicator light is in an on state.
In an embodiment of the first aspect of the present invention, the first device and the second device are wifi devices and the third device is a satellite communication device.
A second aspect of the invention provides an electronic device comprising a power over ethernet based communication switch as described in any of the first aspects of the invention.
In summary, the present invention provides a communication switch and an electronic device based on power over ethernet, wherein the communication switch based on power over ethernet comprises: the system comprises a switching module, a control module, a first interface, a second interface and a third interface; the first interface is connected with first equipment, the second interface is connected with second equipment, the third interface is connected with third equipment, and the first equipment and the second equipment are mutually main and standby equipment; the first interface, the second interface and the third interface can be used for transmitting communication signals and power signals; the control module is used for generating a switching signal and sending the switching signal to the switching module; the switching module is used for switching between two connection relations of the first interface and the third interface and between the second interface and the third interface according to the switching signal. Therefore, the communication switcher and the electronic equipment based on the power over ethernet provided by the invention can overcome the problem that the existing switcher has single function, so that the switcher can be applied to equipment capable of simultaneously transmitting communication signals and power signals, and the switching of the communication signals and the power signals can be realized when the switcher is switched.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a switch application according to the present invention;
fig. 2 is a schematic structural diagram of a connection mode of the communication switch based on power over ethernet according to the present invention;
fig. 3 is a schematic structural diagram of a communication switch based on power over ethernet according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power over ethernet based communication switch according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an embodiment of a power over ethernet based communication switch provided in the present invention;
fig. 6 is a schematic circuit diagram of a control module in the power over ethernet based communication switch according to the present invention;
fig. 7 is a schematic structural diagram of a power signal switching circuit in the power over ethernet based communication switch according to the present invention;
fig. 8 is a schematic structural diagram of a communication signal switching circuit in the power over ethernet based communication switch according to the present invention;
fig. 9 is a schematic structural diagram of an indicator light in the power over ethernet based communication switch according to the present invention;
fig. 10 is a schematic structural diagram of an embodiment of an electronic device provided in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Before formally introducing the communication switch based on power over ethernet provided by the present application, a description will be given of an application scenario and problems in the prior art with reference to the accompanying drawings.
Fig. 1 is a schematic view of a scenario of a switch application provided in the present invention, where the scenario shown in fig. 1 includes an active device and a standby device, and the functions of the active device and the standby device are the same, and when the active device realizes its functions, the standby device exists as a redundant device, and when the active device fails, the standby device can replace the active device to realize the same functions, so as not to affect the functions of a system where the devices are located.
For example, the scenario shown in fig. 1 may be a communication system, and devices in the communication system that need to implement different functions cooperate together to implement communication, for example, a Base station needs to implement the communication by devices such as a baseband processing Unit (BBU), a Remote Radio Unit (Remote Radio Unit, RRU), and an antenna. Any device in the communication system can be used as the active device shown in fig. 1, and a standby device is provided to prevent the entire communication system from failing to communicate normally after the device fails.
In order to implement switching between the active device and the standby device, a communication switching device is usually configured in a scenario shown in fig. 1 to implement the function of the switch. When the master device fails, the communication switching device can switch the signal input and the signal output of the master device into the signal input and the signal output of the standby device, so that the standby device can replace the master device to process the signal output and output the signal. The communication system where the main equipment and the standby equipment are located is not changed, so that the normal communication of the communication system is continuously maintained, and the reliability of the communication system is improved.
However, the communication switching device in the prior art is usually applied to switching between an active device and a standby device with a single function, for example, the communication switching device shown in fig. 1 can only switch signals input and output by the active device and the standby device, and the active device and the standby device can only be other simple devices such as a power amplifier for signal transmission.
With the continuous development of internet technology, devices connected to the internet can communicate with each other and supply power to each other. For example, a network telephone connected to the internet through a network cable can transmit a data signal of call data between the network cable and a network server, and can also receive a power signal provided by a network device through the network cable, and at this time, if the network server fails, even if a standby server exists, the existing communication switching device shown in fig. 1 can only switch the data signal, but cannot switch the power signal.
In summary, in the prior art, the switches such as the communication switching device can only be applied to switching between devices with a single function, and the function is single. Therefore, the present application provides a communication switch device based on power over ethernet to overcome the problem that the existing communication switch device has a single function, so that the communication switch device can be applied to a device capable of transmitting a communication signal and a power signal at the same time, and when the communication switch device performs switching, the communication signal switching and the power signal switching can be both implemented.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 2 is a schematic structural diagram of a connection mode of the communication switch based on power over ethernet according to the present invention. As shown in fig. 2, the power over ethernet based communication switch 1 provided by the present embodiment is connected to a first device 2, a second device 3, and a third device 4, respectively. The first device 2 and the second device 3 may be mutually master devices and standby devices, for example, when the first device 2 is a master device, the second device 3 is a standby device; or, when the second device 3 is an active device, the first device 2 is a standby device. Illustratively, the first device 2 and the second device 3 may be Wireless Fidelity (Wi-Fi) devices, and the third device may be a satellite communication device. The communication switch based on the power over ethernet shown in fig. 2 is specifically used for switching the first device 2 and the second device 3, and establishing a connection relationship between the first device 2 and the third device 4, or establishing a connection relationship between the second device 3 and the third device 4.
More specifically, fig. 3 is a schematic structural diagram of an embodiment of the communication switch based on power over ethernet according to the present invention, and the communication switch based on power over ethernet shown in fig. 3 specifically includes: a switching module 11, a control module 12, a first interface 101, a second interface 102 and a third interface 103. The switching module 11 is connected to the control module 12, the first interface 101 is connected to the first device 2, the second interface 102 is connected to the second device 3, and the third interface 103 is connected to the third device 4. And the first interface 101, the second interface 102 and the third interface 103 are capable of transmitting both communication signals and power signals. For example, the first interface 101, the second interface 102 and the third interface 103 may be interfaces of RJ45 type network cables.
In the present embodiment, the control module 12 is configured to generate a switching signal and send the generated switching signal to the switching module 11. The switching signal is used to instruct the switching module 11 to switch the connection relationship, where two connection relationships that the switching module 11 can switch include: the connection relationship between the first interface 101 and the third interface 103, and the connection relationship between the second interface 102 and the third interface 103. After the first interface 101 and the third interface 103 establish a connection relationship, the first device 2 and the third device 4 may communicate by transmitting a communication signal through the first interface 101 and the third interface 103 of the power over ethernet based communication switch 1, and transmit a power signal for power supply; after the second interface 102 and the third interface 103 establish a connection relationship, the second device 3 and the third device 4 can transmit communication signals for communication and transmit power signals for power supply through the second interface 102 and the third interface 103 of the power over ethernet based communication switch 1. It should be noted that, in the embodiments of the present application, the directions of signals transmitted between the first device 2 and the third device 4, and between the second device 3 and the third device 4 are merely exemplary, and are not limited specifically, and the communication signal and the power signal transmitted by the above devices may be in any direction.
In a specific implementation manner, the control module 12 may include a first key and a second key, and when the control module 12 detects that the first key is pressed by a user or a worker, a first switching signal is generated and sent to the switching module 11, where the first switching signal is used to instruct the switching module 11 to switch the connection relationship between the first interface 101 and the third interface 103, so as to switch the device connected to the third device 4 to the first device 2. At this time, for the switching module 11, when receiving the first switching signal, according to the first switching signal, the connection relationship between the first interface 101 and the third interface 103 is switched, so that the first device 2 and the third device 4 can communicate through the first interface 101 and the third interface 103 of the power over ethernet based communication switch 1, and the first device 2 can supply power to the third device 4 through the first interface 101 and the third interface 103 of the power over ethernet based communication switch 1.
When the control module 12 detects that the second key is pressed by the user or the staff, a second switching signal is generated and sent to the switching module 11, where the second switching signal is used to instruct the switching module 11 to switch the connection relationship between the second interface 102 and the third interface 103, so as to switch the device connected to the third device 4 to the second device 3. At this time, for the switching module 11, when receiving the second switching signal, according to the second switching signal, the connection relationship between the second interface 102 and the third interface 103 is switched, so that the second device 2 and the third device 4 can communicate through the second interface 102 and the third interface 103 of the power over ethernet based communication switch 1, and the second device 2 can supply power to the third device 4 through the second interface 102 and the third interface 103 of the power over ethernet based communication switch 1.
In another specific implementation manner, the control module 12 may include a detection circuit, as shown in fig. 4, fig. 4 is a schematic structural diagram of an embodiment of the power over ethernet based communication switch provided in the present invention. In the example shown in fig. 4, in addition to the first device 2 and the second device 3 being connected to the switching module 11 through the first interface 101 and the second interface 102, respectively, the first device 2 and the second device 3 are also connected to the control module 12 through the first interface 101 and the second interface 102, respectively. The detection circuit in the control module 12 is used to detect the input signals of the first device 2 and the second device 3.
When the first interface 101 and the third interface 103 are connected, and when the detection circuit in the control module 12 detects that the signal transmitted by the first interface 101 is abnormal, the second switching signal is generated. The signal transmitted by the first interface detected here may be a power signal input by the first interface. At this time, for the switching module 11, when receiving the second switching signal, according to the second switching signal, a connection relationship between the second interface 102 and the third interface 103 is established, so that the second device 2 and the third device 4 can communicate through the second interface 102 and the third interface 103 of the power over ethernet based communication switch 1, and the second device 2 can supply power to the third device 4 through the second interface 102 and the third interface 103 of the power over ethernet based communication switch 1.
When the second interface 102 and the third interface 103 are connected, and when the detection circuit in the control module 12 detects that the signal transmitted by the second interface 102 is abnormal, a first switching signal is generated. The signal transmitted by the second interface detected here may be a power signal input by the second interface. At this time, for the switching module 11, when receiving the first switching signal, according to the first switching signal, the connection relationship between the first interface 101 and the third interface 103 is established, so that the first device 2 and the third device 4 can communicate through the first interface 101 and the third interface 103 of the power over ethernet based communication switch 1, and the first device 2 can supply power to the third device 4 through the first interface 101 and the third interface 103 of the power over ethernet based communication switch 1.
Further, in the embodiments of the present application, the first device 2, the second device 3, and the third device 4 are respectively connected to the first interface 101, the second interface 102, and the third interface 103 of the power over ethernet based communication switch 1 through network cables. The network cable can specifically adopt RJ45 type network cable, wherein, RJ45 type network cable includes 8 lines, and 8 lines correspond 8 pins, and when two equipment connect, 8 pins one-to-one correspond. No. 1 (TX +) pin in the 8 pins is used for sending data +, No. 2 (TX-) pin is used for sending data-, No. 3 (RX +) pin is used for receiving data +, No. 6 (RX-) pin is used for receiving data-, and No. 4, No. 5, No. 7 and No. 8 pins are in an unused state (n/c). The first device 2/second device 3 in this embodiment can use the numbers 4, 5, 7 and 8 of the RJ45 type network cable to supply power to the third device 4.
Specifically, fig. 5 is a schematic structural diagram of an embodiment of the power over ethernet based communication switch provided by the present invention, wherein, on the basis of the embodiment shown in fig. 4, the switching module 11 specifically includes a communication signal switching circuit 111 and a circuit signal switching circuit 112, the communication signal switching circuit 111 is configured to switch between two connection relationships between the communication signal of the first interface 101 and the communication signal of the third interface 103, and between the communication signal of the second interface 102 and the communication signal of the third interface 103 according to a switching signal; the power signal switching circuit 112 is configured to switch between two connection relationships between the power signal of the first interface 101 and the power signal of the third interface 103, and between the power signal of the second interface 102 and the power signal of the third interface 103, according to the switching signal; that is, the switching module 11 implements switching of communication signals and switching of power signals to the first device 2 and the second device 3 through different circuits. Optionally, the communication signal switching circuit 111 and the circuit signal switching circuit 112 switch the communication signal and the power signal at the same time after receiving the same switching signal.
The first device 2 is connected to the communication signal switching circuit 111 through the pins No. 1, No. 2, No. 3 and No. 6 of the RJ45 model cable of the first interface 101, and is connected to the power signal switching circuit through the pins No. 4 and No. 5 of the RJ45 model cable of the first interface 101; the second interface 102 of the second device 3 is connected with the communication signal switching circuit 111 through pins 1, 2, 3 and 6 of the RJ45 model network cable, and is connected with the power signal switching circuit through pins 4 and 5 of the RJ45 model network cable of the second interface 102; the third device 4 is connected to the communication signal switching circuit 111 through the pins No. 1, No. 2, No. 3, and No. 6 of the RJ45 model cable of the third interface 103, and is connected to the power signal switching circuit through the pins No. 4 and No. 5 of the RJ45 model cable of the third interface 103. At this time, for the communication switcher 1 based on the power over ethernet, the communication signal switching circuit 111 switches the communication signals of the first device 2/the second device 3, so that the first device 2/the second device 3 communicates by transmitting the communication signals between the pins 1, 2, 3, and 6 of the RJ45 model network cable and the pins 1, 2, 3, and 6 of the RJ45 model network cable of the third device 4. The communication switch 1 based on the power over ethernet further switches the power signal of the first device/the second device 3 through the power signal switching circuit 112, so that the first device 2/the second device 3 sends the power signal to the pin No. 4 and the pin No. 5 of the RJ45 model network cable of the third device 4 through the pin No. 4 and the pin No. 5 of the RJ45 model network cable, thereby realizing the power supply to the first device 2/the second device 3 to the fourth device 4.
Further, in the embodiment shown in fig. 5, the control module 12 further includes a first indicator light 131 and a second indicator light 132. When the first interface 101 and the third interface 103 are in a connection relationship, the first indicator light is in an on state, the second indicator light is in an off state, and the device for supplying power to the third device 4 is the first device 2; when the second interface 102 and the third interface 103 are in a connection relationship, the first indicator light is in an off state, the second indicator light is in an on state, and the device for supplying power to the third device 4 is the second device 3.
More specifically, the present application further provides an implementation manner of a control module, fig. 6 is a schematic diagram of a circuit structure of the control module in the ethernet power supply based communication switch provided by the present invention, where a first device is denoted as a, and a second device is denoted as B, and as shown in fig. 6, a first Button a and a second Button B in the control module are connected to a flip-flop U2A, and the detection circuit may include a not gate U4C, a nand gate U3C, a nand gate U3A, and a nand gate U3B. The output end of the flip-flop U2A is connected to the first input end of the NAND gate U3A in the control module, and the flip-flop U2A is used for sending a key state signal A/B Button Status to the NAND gate U3A according to the states of the first key and the second key. Meanwhile, a power supply signal 24V _ A output by the first device is connected with a first input end of a NAND gate U3C in the control module and a second input end of a NAND gate U3A; the power supply signal 24V _ B output by the second device is connected to the input terminal of the not gate U4C in the control module, and the output terminal of the not gate U4C is connected to the second input terminal of the nand gate U3C. The output terminal of the nand gate U3A and the output terminal of the nand gate U3C are connected to the input terminal of the nand gate U3B, so that the nand gate U3B outputs a switching Signal, which may be the first switching Signal or the second switching Signal, and sends the switching Signal to the switching module.
The control module may send a switching signal to the switching module to instruct the switching module to switch the devices when the first device fails according to the power signals output by the first device and the second device, or send a switching signal to the switching module to instruct the switching module to switch the interfaces connected to the first device and the second device according to the detected action of the first key or the second key, so as to realize the switching between the first device and the second device.
Illustratively, when the first device supplies power to the third device through the power over ethernet based communication switch, the second device is also capable of outputting a power signal normally, where both 24V _ a and 24V _ B are high, and the output of the nand gate U3C is high corresponding to the nand gate U3C having a high first input and a low second input. The output of the flip-flop U2A is low, so that the first input of the nand gate U3A is low and the second input is high, and the output of the nand gate U3A is high. The first input and the second input of the nand gate U3B are both high, and the output of the nand gate U3B is low. If the power signal output by the first device suddenly terminates due to a fault, at this time, 24V _ a becomes low level, the second input end of the nand gate U3C becomes high level, and the output is low level, so that the first input end of the nand gate U3B becomes high level, and the second input end becomes low level, the output end of the nand gate U3B becomes high level, at this time, the high level signal is the second switching signal, and due to a fault of the first device, the second switching signal may indicate to switch to the connection relationship between the second interface and the third interface, so that the device connected to the third device is switched to the second device.
Further illustratively, when the first device supplies power to the third device through the power over ethernet based communication switch, the second device is also capable of normally outputting the power signal, where both 24V _ a and 24V _ B are high, and the output of the nand gate U3C is high corresponding to the nand gate U3C having a high first input and a low second input. The output of the flip-flop U2A is low, so that the first input of the nand gate U3A is low and the second input is high, and the output of the nand gate U3A is high. The first input and the second input of the nand gate U3B are both high, and the output of the nand gate U3B is low. If the flip-flop U2A detects that the second key Button B is pressed, the state of the output end needs to be changed to a high level, the first input end of the nand gate U3A is changed to a high level, the second input end is changed to a high level, and the output end of the nand gate U3A is changed to a low level, so that the first input end of the nand gate U3B is changed to a low level, and the second input end is changed to a high level, the output end of the nand gate U3B is changed to a high level, at this time, the high level signal is the second switching signal.
It should be noted that the above manner of representing the switching signal by the high level and the low level is only an exemplary illustration, and is not limited thereto, for example, the first switching signal may be represented by the high level, and the second switching signal may be represented by the low level; alternatively, the first switching signal may be represented by a low level and the second switching signal may be represented by a high level.
Fig. 7 is a schematic structural diagram of a power signal switching circuit in a communication switch based on power over ethernet according to the present invention, and as shown in fig. 7, the power signal switching circuit includes: a transistor Q1 and a relay U5. The base of the triode Q1 is connected with the control module and used for receiving a first switching Signal or a second switching Signal (A/B Switch Signal) sent by the control module; the collector of the triode Q1 is connected with the power supply (AB _5) of the relay through the coil of the relay; the emitter of the triode Q1 is grounded; the normally open contact and the normally closed contact of the relay U5 are connected with the first device (24V _ A) and the second device (24V _ B), respectively, and the armature of the relay U5 is connected with the third device (AB 24V).
Illustratively, when the base of the transistor Q1 receives a high-level switching signal, the gate and the emitter of the transistor Q1 are turned on, and the coil of the relay U5 is magnetized to attract the armature to the normally open contact to be turned on, at which time, the first device may provide power AB _24V to the third device via the power signal 24V _ a. When the base of the transistor Q1 receives a low-level switching signal, the gate and the emitter of the transistor Q1 are disconnected, and after the relay U5 loses magnetism, the armature is closed to a normally closed contact to be conducted, and at this time, the second device can provide power AB _24V to the third device through the power signal 24V _ B. The high level and the low level are merely exemplary, and in practical applications, the triode may adjust the received high and low levels in a not gate manner, and then process the adjusted high and low levels to correspond to the high and low levels of the switching signal.
Fig. 8 is a schematic structural diagram of a communication signal switching circuit in a communication switch based on power over ethernet according to the present invention, and as shown in fig. 8, the communication signal switching circuit includes: and the four-way selection switch is used for receiving the first switching signal or the second switching signal sent by the control module and controlling the four-way selection switch to be switched on or switched off through the first switching signal or the second switching signal.
For example, in the example shown in fig. 8, the four-way selection switch is implemented by using a selection switch chip U6, wherein four selection switches are included in the switch chip U6, and each switch can select a different path according to the received switching signal (a/B switch signal). In fig. 8, the first device is connected to pins 2, 5, 11 and 14 of the switch chip U6 through pins 1, 2, 3 and 6 of an RJ45 model network cable, the second device is connected to pins 3, 6, 10 and 13 of the switch chip U6 through pins 1, 2, 3 and 6 of an RJ45 model network cable, and the third device is connected to pins 4, 7, 9 and 12 of the switch chip U6 through pins 1, 2, 3 and 6 of an RJ45 model network cable. When the switch chip U6 receives the first switching signal, it controls pin lanes No. 3 and 4, pin lanes No. 6 and 7, pin lanes No. 10 and 9, and pin lanes No. 13 and 12, so as to implement communication signal transmission between the second device and the third device. When the switch chip U6 receives the second switching signal, it controls pin lanes No. 2 and 4, pin lanes No. 5 and 7, pin lanes No. 11 and 9, and pin lanes No. 14 and 12, thereby implementing communication signal transmission between the first device and the third device.
In addition, this application further provides a specific implementation manner of a first indicator light and a second indicator light in a control module, fig. 9 is a schematic structural diagram of an indicator light in the power over ethernet based communication switch provided by the present invention, and as shown in fig. 9, a first indicator light LED a and a second indicator light LED B may be disposed on the same Panel (CONN _ a/B _ Front _ Panel), and the first indicator light is powered by a power signal output by a first device, and the second indicator light is powered by a power signal output by a second device. In conjunction with the embodiment shown in fig. 6, when the first device supplies power to the third device through the communication switch based on power over ethernet, the second device can also output a power signal normally, and the output end of the nand gate U3B is at a low level, and after the low level passes through the not gates U4A and U4B, the Active _ LED _ a signal sent to the first indicator light LED a is at a high level, and the Active _ LED _ B signal sent to the second indicator light LED B is at a low level, and then in fig. 9, the first indicator light LED a is turned on and the second indicator light LED B is turned off. When the second device supplies power to the third device through the communication switch based on power over ethernet, the output terminal of the nand gate U3B is at a high level, and after the high level passes through the not gates U4A and U4B, the Active _ LED _ a signal sent to the first indicator light LED a is at a low level, and the Active _ LED _ B signal sent to the second indicator light LED B is at a high level. In fig. 9, the first indicator light LED a is turned off and the second indicator light LED B is turned on.
In summary, in the communication switch based on power over ethernet provided by the present invention, through the settings of the switching module and the control module, the control module provides a key or automatically detects a fault, and sends a switching signal for instructing switching to the switching module, and the communication signal provided by the switching module switches the circuit to switch the communication signal, and the power signal switching circuit switches the power signal. The switching module can simultaneously complete the switching of the communication signals and the switching of the power signals according to the switching signals sent by the control module, so that the problem that the existing switcher has single function is solved, the switcher can be applied to equipment capable of simultaneously transmitting the communication signals and the power signals, and the switching of the communication signals and the switching of the power signals can be realized when the switcher is switched.
Fig. 10 is a schematic structural diagram of an embodiment of an electronic device provided in the present invention. The electronic device 100 shown in fig. 10 includes the power over ethernet based communication switch as described in any of fig. 2-9.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
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| CN201921595046.7U CN210225433U (en) | 2019-09-24 | 2019-09-24 | Communication switcher and electronic equipment based on power over Ethernet |
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| CN201921595046.7U CN210225433U (en) | 2019-09-24 | 2019-09-24 | Communication switcher and electronic equipment based on power over Ethernet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118201839A (en) * | 2021-10-20 | 2024-06-14 | 三菱电机楼宇解决方案株式会社 | Transmission signal switching device for mobile object, mobile object and mobile object information providing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118201839A (en) * | 2021-10-20 | 2024-06-14 | 三菱电机楼宇解决方案株式会社 | Transmission signal switching device for mobile object, mobile object and mobile object information providing system |
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