CN210867687U - Mixed signal transmission device and mixed signal transmission system - Google Patents
Mixed signal transmission device and mixed signal transmission system Download PDFInfo
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- CN210867687U CN210867687U CN201922163633.5U CN201922163633U CN210867687U CN 210867687 U CN210867687 U CN 210867687U CN 201922163633 U CN201922163633 U CN 201922163633U CN 210867687 U CN210867687 U CN 210867687U
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Abstract
The utility model is suitable for a signal transmission field provides mixed signal transmission device and mixed signal transmission system, mixed signal transmission dress separates the signal through separation module, the carrier signal who obtains the separation is converted through ethernet carrier communication module, the PoE direct current signal that utilizes PoE voltage detection module to obtain the separation detects, voltage value control power module according to the PoE direct current signal is to other module power supplies, transmit away after coupling module with carrier signal and PoE direct current signal coupling. The utility model provides a mixed signal transmission device and mixed signal transmission system can compatible existing ethernet and PoE equipment completely, need not to change equipment and can realize that ethernet and PoE are drawn far away, and is compatible good, is applicable to multiple cable, and through the PoE power supply that draws far away, power supply safety is simplified greatly with the power supply design, and this mixed signal transmission device steals the electricity from former PoE system, need not to supply power alone for the device.
Description
Technical Field
The utility model belongs to the technical field of the electronic circuit, especially, relate to a mixed signal transmission device and mixed signal transmission system.
Background
Currently, the prior art provides partial solutions for implementing Ethernet transmission in coaxial lines, such as EoC (Ethernet over COAX, Ethernet data is transmitted via coaxial cable). The technology adopts the HPAV (Home plug Power line Alliance) technology, realizes the bridging of the HPAV and the Ethernet, and transmits the HPAV and the Ethernet on a coaxial line. In other prior art schemes, there are products that can implement the transmission distance of ethernet over twisted pair, such as BroadR.
The prior art has the following problems when the Ethernet signal transmission is carried out: 1. in the standard Ethernet, when the maximum transmission distance of CAT5 is 100m, the distance is reduced when interference exists; 2. the EoC/BroadR technology focuses on solving the problem of long Ethernet transmission distance or the problem of Ethernet transmission in other media, and neglects two important problems: a) PoE (power over Ethernet, active Ethernet) is terminated by EoC devices and cannot be transmitted in the transmission medium; b) the characteristics of transmission media are fully utilized to realize PoE remote; 3. EoC or other similar technologies in fact create a transport network independent of the original ethernet, which is constantly active regardless of whether ethernet or PoE is connected. Two adverse effects are brought about: a) network management is complicated, and dead corners which cannot be detected by a management system exist; b) The static power consumption of the network is increased; 4. the BroadR technology requires that both ends adopt the technology at the same time to realize long-distance ethernet transmission, and has poor compatibility; 5; generally, the EoC device needs to be independently powered, the network deployment is more complicated, and the use is extremely inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a mixed signal transmission device and mixed signal transmission system are provided aims at solving prior art and can't carry out long distance mixed signal transmission, the complicated problem of network deployment.
The utility model discloses a realize like this, a mixed signal transmission device, including first separation module, first ethernet carrier communication module, first coupling module, first PoE voltage detection module and first power module, first power module respectively with first separation module, first ethernet carrier communication module, first coupling module, first PoE voltage detection module is connected;
the first separation module is connected with a power supply device and used for receiving a transmission signal sent by the power supply device and separating the transmission signal into a first carrier signal and a first PoE direct-current signal;
the first ethernet carrier communication module is connected to the first separation module, and is configured to convert the first carrier signal into a second carrier signal with a preset carrier frequency, and send the second carrier signal to the first coupling module;
the first PoE voltage detection module is respectively connected with the first separation module, the first power supply module and the first coupling module, and is configured to send the first PoE direct current signal to the first coupling module and the first power supply module, detect a voltage value of the first PoE direct current signal, and control the first power supply module to supply power to other modules according to the voltage value;
the first power supply module is connected with the first coupling module and used for converting the first PoE direct-current signal into a first power supply signal with a preset value voltage;
the first coupling module is connected to a first transmission medium, and configured to couple the second carrier signal and the first PoE direct current signal, and send a first transmission signal obtained through coupling to the first transmission medium.
Further, the mixed signal transmission device further comprises a first PoE process detection module;
the first PoE process detection module is respectively connected to the first separation module and the first PoE voltage detection module, and is configured to send the first PoE direct current signal to the first PoE voltage detection module, and obtain power supply information of the power supply device through the first PoE direct current signal, where the power supply information includes one or more of maximum power supply power, power supply stability, and power supply power.
Further, the first coupling module comprises a first high-pass filter and a first low-pass filter;
the first high-pass filter is connected with the first Ethernet carrier communication module;
the first low-pass filter is connected with the first PoE voltage detection module;
and the first high-pass filter and the first low-pass filter are connected in parallel and then are connected with the first transmission medium.
Further, the bandwidth parameters of the first high pass filter and the first low pass filter are consistent with the frequency bandwidth of the second carrier signal.
The embodiment of the utility model provides a mixed signal transmission device is still provided, including second separation module, second ethernet carrier communication module, second coupling module, second PoE voltage detection module and second power module, second power module respectively with second separation module, second ethernet carrier communication module, second coupling module, second PoE voltage detection module is connected;
the second separation module is connected with the first transmission medium and used for receiving a first transmission signal sent by the first transmission medium and separating the first transmission signal to obtain a third carrier signal and a second PoE direct current signal;
the second ethernet carrier communication module is respectively connected to the second separation module and the second coupling module, and is configured to convert the third carrier signal into a fourth carrier signal with a preset carrier frequency, and send the fourth carrier signal to the second coupling module;
the second PoE voltage detection module is respectively connected to the second separation module, the second power supply module and the second coupling module, and configured to send the second PoE direct current signal to the second coupling module and the second power supply module, respectively, detect a voltage value of the second PoE direct current signal, and control the second power supply module to supply power to other modules according to the voltage value;
the second power supply module is connected with the second coupling module and is used for converting the second PoE direct-current signal into a second power supply signal with a preset value voltage;
and the second coupling module is connected with a powered device, and is configured to couple the fourth carrier signal and the second PoE direct current signal, and send a second transmission signal obtained through coupling to the powered device.
Further, the mixed signal transmission device further comprises a second PoE process detection module;
the second PoE process detection module is connected to the second separation module and the second PoE voltage detection module, and is configured to send the second PoE direct current signal to the second PoE voltage detection module, and obtain power receiving information of the power receiving device through the second PoE direct current signal, where the power receiving information includes one or more of a maximum power receiving power, a power receiving stability condition, and a power receiving power.
Further, the second coupling module comprises a second high-pass filter, a second low-pass filter and a low-voltage drop bridge stack;
the second high-pass filter is respectively connected with the second Ethernet carrier communication module and the first transmission medium;
the second low-pass filter is connected with the low-voltage drop bridge stack;
and the low-voltage drop bridge stack is connected with the second PoE voltage detection module.
Further, the bandwidth parameters of the second high-pass filter and the second low-pass filter are consistent with the frequency bandwidth of the fourth carrier signal.
The embodiment of the utility model provides a still provide a mixed signal transmission system, including arbitrary the aforesaid mixed signal transmission device including first separation module and arbitrary the aforesaid mixed signal transmission device including second separation module.
Compared with the prior art, the utility model, beneficial effect lies in: the embodiment of the utility model provides a separate the signal through the separation module to the carrier signal who obtains the separation through ethernet carrier communication module converts, utilizes PoE voltage detection module to detect the PoE direct current signal that the separation obtained simultaneously, and controls power module to supply power to other modules according to the magnitude of voltage of PoE direct current signal, transmits away after coupling carrier signal and PoE direct current signal coupling through the coupling module at last. The embodiment of the utility model provides a mixed signal transmission device can be compatible existing ethernet and PoE equipment completely, need not to change equipment and can realize ethernet and PoE and zoom out, and compatibility is good, and this mixed signal transmission device is applicable to multiple cable, can make full use of the cable that has installed and realize system IP ization, digital upgrading, has saved engineering cost and material, has realized environmental protection and emission reduction; in some application areas, system wiring and equipment installation are simplified. Through the remote PoE power supply, the system power supply safety and the power supply design are greatly simplified, and meanwhile, the mixed signal transmission device steals power from the original PoE system without independently supplying power to the device.
Drawings
Fig. 1 is a schematic structural diagram of a hybrid signal transmission device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a mixed signal transmission device according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a hybrid signal transmission device according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a hybrid signal transmission device according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of an ethernet interface and a PoE separation circuit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an ethernet interface and a PoE coupling circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an ethernet carrier communication module according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a transmitting/receiving coupling circuit provided in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a local power supply module according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a carrier signal and PoE power coupling circuit provided in an embodiment of the present invention;
fig. 11 is a detailed schematic diagram of a carrier signal and PoE power coupling circuit according to an embodiment of the present invention
Fig. 12 is a schematic structural diagram of a circuit for separating a carrier signal from a PoE power supply according to an embodiment of the present invention;
fig. 13 is a detailed schematic structural diagram of a circuit for separating a carrier signal from a PoE power supply according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a PoE process detection circuit provided in an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a PoE voltage detection circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 illustrates a mixed signal transmission device according to an embodiment of the present invention, which includes a first separation module 101, a first ethernet carrier communication module 102, a first coupling module 103, a first PoE voltage detection module 104, and a first power supply module 105, where the first power supply module 105 is connected to other modules in the mixed signal transmission device;
the first separation module 101 is connected to a power supply device, and is configured to receive a transmission signal sent by the power supply device, and separate the transmission signal into a first carrier signal and a first PoE direct current signal;
the first ethernet carrier communication module 102 is connected to the first separation module 101, and configured to convert the first carrier signal into a second carrier signal with a preset carrier frequency, and send the second carrier signal to the first coupling module 103;
the first PoE voltage detection module 104 is respectively connected to the first separation module 101, the first power supply module 105, and the first coupling module 103, and configured to send the first PoE direct current signal to the first coupling module 103 and the first power supply module 105, respectively, detect a voltage value of the first PoE direct current signal, and control the first power supply module 105 to supply power to other modules according to the voltage value;
a first power supply module 105, connected to the first coupling module 103, for converting the first PoE dc signal into a first power supply signal with a predetermined value voltage;
the first coupling module 103 is connected to a first transmission medium, and configured to couple the second carrier signal and the first PoE direct current signal, and send a first transmission signal obtained through coupling to the first transmission medium.
On the basis of the embodiment provided in fig. 1, the present invention further provides the mixed signal transmission apparatus shown in fig. 2, further comprising a first PoE process detection module 106;
the first PoE process detection module 106 is connected to the first separation module 101 and the first PoE voltage detection module 104, respectively, and configured to send the first PoE direct current signal to the first PoE voltage detection module 104, and obtain power supply information of the power supply device through the first PoE direct current signal, where the power supply information includes one or more of maximum power supply power, power supply stability, and power supply power.
Fig. 3 shows a mixed signal transmission device according to another embodiment of the present invention, which includes a second separation module 201, a second ethernet carrier communication module 202, a second coupling module 203, a second PoE voltage detection module 204, and a second power supply module 205, where the second power supply module 205 is connected to other modules in the mixed signal transmission device;
the second separation module 201 is connected to the first transmission medium, and is configured to receive a first transmission signal sent by the first transmission medium, and separate the first transmission signal to obtain a third carrier signal and a second PoE direct current signal;
the second ethernet carrier communication module 202 is connected to the second separation module 201 and the second coupling module 203, and configured to convert the third carrier signal into a fourth carrier signal with a preset carrier frequency, and send the fourth carrier signal to the second coupling module 203;
a second PoE voltage detection module 204, which is respectively connected to the second separation module 201, the second power supply module 205, and the second coupling module 203, and configured to send a second PoE direct current signal to the second coupling module 203 and the second power supply module 205, respectively, detect a voltage value of the second PoE direct current signal, and control the second power supply module 205 to supply power to other modules according to the voltage value;
a second power supply module 205, connected to the second coupling module 203, configured to convert the second PoE direct current signal into a second power supply signal with a predetermined value voltage;
the second coupling module 203 is connected to the powered device, and configured to couple the fourth carrier signal and the second PoE direct current signal, and send a second transmission signal obtained through coupling to the powered device.
On the basis of the embodiment provided in fig. 3, the embodiment of the present invention further provides the mixed signal transmission apparatus shown in fig. 4, which further includes a second PoE process detection module 206;
the second PoE process detection module 206 is connected to the second separation module 201 and the second PoE voltage detection module 204, respectively, and configured to send the second PoE dc signal to the second PoE voltage detection module 204, and obtain the power receiving information of the power receiving device through the second PoE dc signal, where the power receiving information includes one or more of a maximum power receiving power, a power receiving stability condition, and a power receiving power. The embodiment of the utility model provides a mixed signal transmission system is still provided, including the mixed signal transmission device that figure 1 or 2 are shown, and the mixed signal transmission device that figure 3 or figure 4 are shown. In this embodiment, the mixed signal transmission apparatus shown in fig. 1 or fig. 2 is referred to as a head end, the mixed signal transmission apparatus shown in fig. 3 or fig. 4 is referred to as a client end, and the head end and the client end perform signal transmission through a transmission medium, which may be a patch cable or the like, and includes the coaxial: 75-3, 75-5 video coaxial line, twisted pair: RS485 line, CATx class: CAT3, CAT5, CAT5e, others: power lines, RVV lines. In which the head terminates a PSE (Power Sourcing Equipment), which may be an ethernet switch with PoE functionality. The client connects to a PD (Powered Device), which may be IPC (IPCamera).
As can be seen from fig. 1 to 4, the technical solution provided by the present invention virtualizes two channels on one transmission cable: a) a high-frequency signal channel of the carrier signal obtained after the separation from the first separation module or the second separation module; b) and the direct current PoE channel is used for obtaining PoE direct current electric signals after the PoE direct current electric signals are separated from the first separation module or the second separation module. The original 802.3at/af protocol is still valid because the direct current PoE channel is not provided with any high-resistance devices and equipment.
The utility model provides a various cable impedance of make full use of minimize way can reduce passageway equivalent direct current impedance to improve PoE distance greatly. According to ohm's law, the PoE pull-out length satisfies the following formula: rmax＝(V0-Vth)*V0and/P. In this formula, V0Is PSE side supply voltage, VthIs the lowest voltage allowed by the PD side, P is the power consumption of the PD, RmaxIs the maximum allowable line dc impedance. From the above formula, when V0，VthAnd when P is fixed, RmaxIs also a constant. Therefore, the PoE transmission distance can be extended as long as the unit impedance of the cable is reduced as much as possible. There are two ways to achieve this: 1) The unit impedance of the line can be halved by using 4 pairs of cables of CAT 5; if CAT5e and CAT6 outer shields are also used, the line unit impedance can be reduced to 1/3 of the ordinary 802.3 af/at; 2) a cable with a low unit dc impedance is used. For example, coaxial cable with impedance of 1/5 ~ 2/3 of two pairs of CAT5(802.3af/at mode) unit impedance is used. In the embodiment of the utility model provides an in, utilize modified high frequency carrier signal and PoE direct current supply's coupling/decoupling zero circuit, can compatible various yearWave communication technology or baseband transmission technology, as long as the lowest frequency of the signal exceeds 100 KHz. Have been verified, but not limited to HPAV/G.hn/HD-PLC/HomePNA/Broadr, etc.
The structure and function of the modules in the embodiments of the present invention are further explained by fig. 5 to 12:
1. fig. 5 shows a detailed structure of the first separation module 101, wherein the ethernet interface and the PoE separation circuit are IEEE802.3AF/AT standard circuits, and the embodiment of the present invention is compatible with IEEE802.3AF/AT in the remote power protocol, so that the circuit is consistent on the ethernet side.
2. Fig. 6 shows a detailed structure of the second coupling module 203, wherein the second coupling module 203 is substantially an ethernet interface and a PoE coupling circuit, and the ethernet interface and the PoE coupling circuit are IEEE802.3AF/AT standard circuits, and the embodiment of the present invention is compatible with IEEE802.3AF/AT in the remote power supply protocol, so that the circuits thereof are also consistent on the ethernet side.
3. In a specific implementation process, both the first ethernet carrier communication module and the second ethernet carrier communication module can implement their respective functions through the same ethernet carrier communication module, and fig. 7 shows structures adopted by the first ethernet carrier communication module and the second ethernet carrier communication module in this embodiment. More specifically, there are a variety of options for ethernet carrier communication technology, such as HPAV, g.hn, HD-PLC, BroadR, etc. Any carrier communication technique may be used in this embodiment as long as the lowest carrier frequency is higher than 100 KHz. In fig. 7, the ethernet PHY, the modem, and the transmission amplifier may be implemented by an existing integrated circuit. Fig. 8 shows a detailed structure of the transmission/reception coupling circuit.
4. In the present embodiment, the first power supply module 105 and the second power supply module 205 are collectively referred to as a local power supply module, and are used for converting PoE high voltage into various low voltages required by a local integrated circuit, such as 12V, 3.3V, 1.2V, and the like. In this embodiment, the first power supply module 105 supplies power to other modules in the mixed signal transmission device shown in fig. 1 or fig. 2, and the second power supply module 205 supplies power to other modules in the mixed signal transmission device shown in fig. 3 or fig. 4. After the first PoE voltage detection module 104 detects the stable PoE voltage, power is supplied to all components of the transmission device through the first power supply module 105; after the second PoE voltage detection module 204 detects the stable PoE voltage, power is supplied to all components of the transmission device through the first power supply module 205. In order to improve energy efficiency, all circuits are powered by a switching power supply. According to application requirements, the first power supply module 105 and the second power supply module 205 may be isolated switch power supplies or non-isolated power supplies. In this embodiment, the first power supply module 105 and the second power supply module 205 take a non-isolated power supply as an example, as shown in fig. 9, and are configured to convert a high voltage of 37-57V into a low voltage of 12V, and further convert the high voltage into a low voltage of 3.3V.
5. The first coupling module 103 is essentially a carrier signal and PoE power coupling circuit. It is suitable for the utility model discloses the line head end, the equipment department that links to each other with PSE equipment, this first coupling module 103 need be in the same place the PoE power that comes from PSE and high-speed carrier signal coupling, send into the transmission media. Fig. 10 shows an implementation of the carrier signal to PoE power coupling circuit in which the bandwidth requirements of the high pass filter and low pass filter are consistent with the analog frequency band used by the ethernet carrier communication module. Under the condition of low requirement, the capacitor can be directly used as a high-pass filter, and the inductor can be used as a low-pass filter. Fig. 11 shows a specific implementation structure of the carrier signal and PoE power coupling circuit.
6. The second separation module 201 is substantially a carrier signal and PoE power splitting circuit, and the second separation module 201 is disposed at the tail end of the line, which is connected to the PD, that is, disposed at the client end. The utility model discloses technical scheme need with PoE DC power supply and high-speed carrier signal phase separation, and high-speed carrier signal sends into "ethernet carrier communication module" to convert into ethernet signal, send into "ethernet interface and PoE coupling circuit". The PoE direct current power supply is sent to a PoE process detection circuit, a PoE voltage detection circuit and a second power supply module to respectively provide power for the PD equipment and the local circuit. Fig. 12 shows a configuration of a carrier signal to PoE power splitting circuit, where in fig. 12 the bandwidth parameters of the high pass filter and low pass filter are required to be consistent with the analog frequency band used by the "ethernet carrier communication module". Under the condition of low requirement, the capacitor can be directly used as a high-pass filter, and the inductor can be used as a low-pass filter. Fig. 13 shows the simplest implementation circuit of the second separation module 201 provided in the embodiment of the present invention.
7. In the present embodiment, the first PoE process detection module 106 and the second PoE process detection module 206 are not in any case necessary. However, for some strict management systems, it is necessary to know the power supply condition of all devices in the network, and it is necessary to monitor the PoE process, so as to obtain the power required by the PD device, and the protocol supported by the PSE, so it is necessary to set a corresponding PoE process detection module. Fig. 14 shows a specific structure adopted by the first PoE process detecting module 106 and the second PoE process detecting module 206 in this embodiment, wherein according to an 802.3AF/AT protocol, the PSE first sends out a voltage of 2.7 to 10V as PD on-line detection, and then sends out a voltage of 14.5 to 20.5V for classification. The PoE process detection module monitors the classified current to judge the average power consumption and the maximum power consumption required by the PD, and provides a basis for system power.
8. In this embodiment, the first PoE voltage detection module 104 and the first PoE voltage detection module 204 can implement corresponding functions through the same PoE voltage detection circuit. After the PSE and the PD complete PoE detection/classification, the PSE outputs a stable voltage of 30-57V to provide power to the PD. In this embodiment, a PoE voltage detection circuit is used to detect the dc voltage of the line. And when the voltage is more than 30V, starting local power supply, otherwise, the communication module of the equipment is in a power-off state. Therefore, the mixed signal transmission device can steal power from the PoE network. Fig. 15 shows the PoE voltage detection circuit provided in this embodiment, in fig. 15, when the power supply voltage is less than 30V, D3 is not conducting, Q1 is not conducting, Q2 is low voltage at gate, Q2 is also not conducting, and +48V voltage is 0; when the power supply voltage is greater than 30V, D3 is conducted, Q1 quickly enters a saturation state, and the R7/R8 voltage division network ensures that the minimum grid voltage of Q2 is 3V and the maximum grid voltage is 20V, and Q2 is safely conducted; the Q2 on-resistance is very low so that the +48V network voltage is approximately equal to the PoE supply voltage.
In an embodiment of the present invention, the ethernet and PoE separation circuit module, the ethernet and PoE coupling circuit module are designed as standard ethernet and 802.3at/af, and the different cable connectors are standard. The local power supply module converts high voltage (37-57V) from PoE into low voltage (such as 3.3V) required by a local circuit, and the high voltage is a standard circuit. The Ethernet carrier communication module can be HPAV/G.hn/HD-PLC/BroadR and other technologies. The carrier signal and PoE power supply realize co-cable transmission through a simple, efficient and safe coupling circuit, the PoE process detection module monitors the processes of classification/detection of the PSE and the PD and the like, information such as the maximum power supply capacity of the PSE and information such as whether the power supply is stable can be obtained, and support is provided for power supply of equipment. The PoE voltage detection module realizes that the equipment steals power from the PSE on the premise of not influencing PoE work.
The embodiment provides a device and a system for realizing high-speed carrier communication signal and PoE (Power over Ethernet) hybrid transmission. The embodiment can convert the Ethernet into a high-speed carrier signal and transmit the signal together with PoE mixing without interfering with each other on the premise of not modifying various devices (including PSE and PD) which are already applied in a large number of fields. By utilizing the high efficiency of the carrier technology and fully utilizing the low direct current resistance characteristic of the transmission medium, the transmission distance of the Ethernet and the PoE can be greatly expanded. The embodiment can not only utilize CAT3/CAT5/CAT6 twisted-pair transmission, but also utilize RS485 line, video coaxial line, radio frequency coaxial line, voice intercom line and other media transmission. The embodiment completely conforms to the IEEE802.3af/at standard, and the protocol compatibility and the remote power supply safety of PoE are not damaged.
It is right above the utility model provides a mixed signal transmission device and mixed signal transmission system's description, to technical personnel in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and application scope, to sum up, this specification content should not be understood as right the utility model discloses a restriction.
Claims (9)
1. A mixed signal transmission device is characterized by comprising a first separation module, a first Ethernet carrier communication module, a first coupling module, a first PoE voltage detection module and a first power supply module, wherein the first power supply module is respectively connected with the first separation module, the first Ethernet carrier communication module, the first coupling module and the first PoE voltage detection module;
the first separation module is connected with a power supply device and used for receiving a transmission signal sent by the power supply device and separating the transmission signal into a first carrier signal and a first PoE direct-current signal;
the first ethernet carrier communication module is connected to the first separation module, and is configured to convert the first carrier signal into a second carrier signal with a preset carrier frequency, and send the second carrier signal to the first coupling module;
the first PoE voltage detection module is respectively connected with the first separation module, the first power supply module and the first coupling module, and is configured to send the first PoE direct current signal to the first coupling module and the first power supply module, detect a voltage value of the first PoE direct current signal, and control the first power supply module to supply power to other modules according to the voltage value;
the first power supply module is connected with the first coupling module and used for converting the first PoE direct-current signal into a first power supply signal with a preset value voltage;
the first coupling module is connected to a first transmission medium, and configured to couple the second carrier signal and the first PoE direct current signal, and send a first transmission signal obtained through coupling to the first transmission medium.
2. The mixed signal transmission device of claim 1, wherein the mixed signal transmission device further comprises a first PoE process detection module;
the first PoE process detection module is respectively connected to the first separation module and the first PoE voltage detection module, and is configured to send the first PoE direct current signal to the first PoE voltage detection module, and obtain power supply information of the power supply device through the first PoE direct current signal, where the power supply information includes one or more of maximum power supply power, power supply stability, and power supply power.
3. The mixed signal transmission device of claim 2, wherein the first coupling module includes a first high pass filter and a first low pass filter;
the first high-pass filter is connected with the first Ethernet carrier communication module;
the first low-pass filter is connected with the first PoE voltage detection module;
and the first high-pass filter and the first low-pass filter are connected in parallel and then are connected with the first transmission medium.
4. The mixed signal transmission device of claim 3, wherein bandwidth parameters of the first high pass filter and the first low pass filter coincide with a frequency bandwidth of the second carrier signal.
5. A mixed signal transmission device is characterized by comprising a second separation module, a second Ethernet carrier communication module, a second coupling module, a second PoE voltage detection module and a second power supply module, wherein the second power supply module is respectively connected with the second separation module, the second Ethernet carrier communication module, the second coupling module and the second PoE voltage detection module;
the second separation module is connected with the first transmission medium and used for receiving a first transmission signal sent by the first transmission medium and separating the first transmission signal to obtain a third carrier signal and a second PoE direct current signal;
the second ethernet carrier communication module is respectively connected to the second separation module and the second coupling module, and is configured to convert the third carrier signal into a fourth carrier signal with a preset carrier frequency, and send the fourth carrier signal to the second coupling module;
the second PoE voltage detection module is respectively connected to the second separation module, the second power supply module and the second coupling module, and configured to send the second PoE direct current signal to the second coupling module and the second power supply module, respectively, detect a voltage value of the second PoE direct current signal, and control the second power supply module to supply power to other modules according to the voltage value;
the second power supply module is connected with the second coupling module and is used for converting the second PoE direct-current signal into a second power supply signal with a preset value voltage;
and the second coupling module is connected with a powered device, and is configured to couple the fourth carrier signal and the second PoE direct current signal, and send a second transmission signal obtained through coupling to the powered device.
6. The mixed signal transmission device of claim 5, wherein the mixed signal transmission device further comprises a second PoE process detection module;
the second PoE process detection module is connected to the second separation module and the second PoE voltage detection module, and is configured to send the second PoE direct current signal to the second PoE voltage detection module, and obtain power receiving information of the power receiving device through the second PoE direct current signal, where the power receiving information includes one or more of a maximum power receiving power, a power receiving stability condition, and a power receiving power.
7. The mixed signal transmission device of claim 6, wherein the second coupling module comprises a second high pass filter, a second low pass filter, and a low dropout bridge stack;
the second high-pass filter is respectively connected with the second Ethernet carrier communication module and the first transmission medium;
the second low-pass filter is connected with the low-voltage drop bridge stack;
and the low-voltage drop bridge stack is connected with the second PoE voltage detection module.
8. The mixed signal transmission device of claim 7, wherein bandwidth parameters of the second high-pass filter and the second low-pass filter coincide with a frequency bandwidth of the fourth carrier signal.
9. A mixed signal transmission system comprising the mixed signal transmission apparatus of any one of claims 1 to 4 and the mixed signal transmission apparatus of any one of claims 5 to 8.
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| CN201922163633.5U CN210867687U (en) | 2019-12-05 | 2019-12-05 | Mixed signal transmission device and mixed signal transmission system |
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| CN201922163633.5U CN210867687U (en) | 2019-12-05 | 2019-12-05 | Mixed signal transmission device and mixed signal transmission system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114422279A (en) * | 2021-12-07 | 2022-04-29 | 成都市联洲国际技术有限公司 | Expansion circuit, system, data processing method, and computer storage medium |
| DE102021120393B3 (en) | 2021-08-05 | 2022-09-08 | Turck Holding Gmbh | Method and interconnection for operating a network or network section |
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2019
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021120393B3 (en) | 2021-08-05 | 2022-09-08 | Turck Holding Gmbh | Method and interconnection for operating a network or network section |
| EP4131848A1 (en) | 2021-08-05 | 2023-02-08 | Turck Holding GmbH | Method and circuit for operating a network or network section |
| CN114422279A (en) * | 2021-12-07 | 2022-04-29 | 成都市联洲国际技术有限公司 | Expansion circuit, system, data processing method, and computer storage medium |
| CN114422279B (en) * | 2021-12-07 | 2023-07-18 | 成都市联洲国际技术有限公司 | Expansion circuit, system, data processing method and computer storage medium |
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