CN114363098A - Power supply circuit for field bus - Google Patents
Power supply circuit for field bus Download PDFInfo
- Publication number
- CN114363098A CN114363098A CN202111474673.7A CN202111474673A CN114363098A CN 114363098 A CN114363098 A CN 114363098A CN 202111474673 A CN202111474673 A CN 202111474673A CN 114363098 A CN114363098 A CN 114363098A
- Authority
- CN
- China
- Prior art keywords
- bus
- power supply
- signal
- power
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract description 126
- 238000000605 extraction Methods 0.000 claims description 31
- 239000003990 capacitor Substances 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 16
- 238000000926 separation method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The embodiment of the invention discloses a field bus power supply circuit. The circuit includes: the system comprises a power supply device, a main node, a bus, an inserter and a separator; the inserter is connected between the power supply equipment and the bus in series, and the power supply equipment is used for providing a power supply signal to the bus through the inserter; the main node is electrically connected with the bus and used for providing communication signals for the bus; the bus receives a power supply signal and a communication signal; the splitter is connected in series between the bus and the slave node and between the bus and the master node, and is used for splitting a communication signal and a power supply signal on the bus. The embodiment of the invention discloses a field bus power supply circuit which can realize collinear transmission of power signals and communication signals.
Description
Technical Field
The embodiment of the invention relates to the industrial control and communication technology, in particular to a field bus power supply circuit.
Background
In a communication system, a bus serves as a common communication trunk for information transmission between various functional units of a computer, is connected with a communication device and a power supply device, transmits a communication signal and a power supply signal of the power supply device to the communication device, realizes signal transmission between two or more communication devices, enables normal communication between the communication devices, and provides a power supply path for the communication devices.
At present, in an existing field bus power supply circuit, a power supply signal and a communication signal are transmitted separately, an extra power supply line is needed besides a communication line, the positive polarity and the negative polarity of the power supply are distinguished, the positive polarity and the negative polarity of the power supply need to be distinguished when the power supply is connected into the power supply line, wiring difficulty and complexity are increased, and cable transmission cost is high.
Disclosure of Invention
The embodiment of the invention provides a field bus power supply circuit, which is used for realizing collinear transmission of a power supply signal and a communication signal.
The embodiment of the invention provides a field bus power supply circuit, which comprises: the system comprises a power supply device, a main node, a bus, an inserter and a separator;
the inserter is connected between the power supply equipment and the bus in series, and the power supply equipment is used for providing a power supply signal to the bus through the inserter;
the main node is electrically connected with the bus and used for providing communication signals for the bus; the bus receives a power supply signal and a communication signal;
the splitter is connected in series between the bus and the slave node and between the bus and the master node, and is used for splitting a communication signal and a power supply signal on the bus.
Optionally, the interposer is an EMI filter.
Optionally, the EMI filter includes a common-mode inductor and a filter capacitor, and the common-mode inductor is electrically connected to the filter capacitor.
Optionally, the separator includes a power signal extraction module and a communication signal extraction module, the power signal extraction module and the communication signal extraction module are both electrically connected to a first port and a second port of the separator, and the first port and the second port are respectively electrically connected to the positive electrode and the negative electrode of the bus.
Optionally, the power signal extraction module includes a rectifier bridge and a low-pass filter, and the rectifier bridge is electrically connected to the bus through the low-pass filter.
Optionally, the circuit further includes a power chip, the power chip is electrically connected to the power signal extraction module, and the power chip is configured to adjust a voltage corresponding to the power signal to a voltage within a preset width range and output the voltage within the preset width range.
Optionally, the circuit further includes a dc power supply, a first inductor and a first capacitor, the dc power supply is electrically connected to the power chip through the first inductor, and the first capacitor is connected in parallel to two ends of the dc power supply.
Optionally, the communication signal extraction module includes a second capacitor, a third capacitor, and a first transformer, one end of a primary coil of the first transformer is electrically connected to the positive electrode of the bus through the second capacitor, the other end of the primary coil of the first transformer is electrically connected to the negative electrode of the bus through the third capacitor, and the first transformer outputs the communication signal.
Optionally, the splitter further includes a second transformer, a primary coil of the second transformer is connected in parallel with the primary coil of the first transformer, and a secondary coil of the second transformer is electrically connected to the communication chip, and is configured to receive the signal output by the communication chip and transmit the received signal to the bus.
Optionally, the power supply device is located at a position where the plurality of slave nodes are close to the master node, or located between the plurality of slave nodes, or located at a position where the plurality of slave nodes are far from the master node.
The field bus power supply circuit provided by the embodiment of the invention comprises power supply equipment, a main node, a bus, an inserter and a separator; the inserter is connected between the power supply equipment and the bus in series, and the power supply equipment is used for providing a power supply signal to the bus through the inserter; the main node is electrically connected with the bus and used for providing communication signals for the bus; the bus receives a power supply signal and a communication signal; the separator is connected between the bus and the slave node in series, and is used for separating the communication signal and the power supply signal on the bus, transmitting the separated communication signal to the communication end of the slave node, and transmitting the separated power supply signal to the power supply end of the slave node. According to the field bus power supply circuit provided by the embodiment of the invention, the inserter is arranged between the bus and the power supply equipment, so that the communication signal transmitted on the bus is separated from the power supply equipment, the influence of the communication signal on the power supply equipment is prevented, and the separator is arranged to separate the communication signal from the power supply signal, so that the communication signal and the power supply signal transmitted on the bus are respectively transmitted to the communication end and the power supply end of the slave node, normal power supply and communication are ensured, and the collinear transmission of the power supply signal and the communication signal is realized.
Drawings
FIG. 1 is a schematic diagram of a field bus of the prior art;
FIG. 2 is a schematic diagram of another prior art fieldbus;
fig. 3 is a block diagram of a fieldbus power supply circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a location of a power supply device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of another power supply device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another location of a power supply device according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an interposer according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of a separator according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic diagram of one bus in the prior art, and fig. 2 is a schematic diagram of another bus in the prior art. Referring to fig. 1 and 2, the bus in fig. 1 is an RS485 bus and is also a Power line for transmitting Power signals Power and Gnd, the bus in fig. 2 is a CAN bus and is also a communication line for transmitting communication signals CANH and CANL, an additional Power line is required in addition to the communication line, and the Power line has a positive polarity and a negative polarity, which increases the difficulty of wiring and increases the cable transmission cost.
The invention is particularly applicable to field broadband buses, also known as AUTBUS buses. An AUTBUS bus system may support 254 active nodes, one of which is a control node and the other of which is an end user node. The control node is responsible for managing, distributing and recovering system resources, pushing system configuration to all nodes in real time, distributing communication bandwidth and the like. And the user nodes use the bandwidth resources obtained by allocation for information exchange. A control node in the AUTBUS bus system is configured to generate and send resource scheduling information to at least one slave node. The resource scheduling information is used to specify the fixed time slots used by each node. In a two-wire network, the smallest time slice unit is a time slot. 64 slots constitute a frame and 256 frames constitute a superframe.
Example one
Fig. 3 is a block diagram of a fieldbus power supply circuit according to an embodiment of the present invention, where the fieldbus power supply circuit is applicable to bus communication and the like, and the fieldbus power supply circuit includes: power supply apparatus 10, master node 20, bus 30, inserter 40 and splitter 50.
Wherein, the inserter 40 is connected in series between the power supply device 10 and the bus 30, and the power supply device 10 is used for providing a power supply signal to the bus 30 through the inserter 40; the master node 20 is electrically connected to the bus 30, the master node 20 being configured to provide communication signals to the bus 30; bus 30 receives power signals and communication signals; a splitter 50 is connected in series between the bus 30 and the slave node 60 and between the bus 30 and the master node 20, the splitter 50 being used to split the communication signals and the power signals on the bus 30.
Specifically, the bus 30 may be a two-wire bus, the number of slave nodes 60 and the number of splitters 50 may be plural, one splitter 50 corresponds to each slave node 60, and a splitter 50 corresponds to the master node 20, where the number of splitters 50 is the sum of the total number of master nodes 20 and slave nodes 60. The power supply signal provided by the power supply device 10 is a dc signal and the communication signal provided by the master node is an ac signal, and the inserter 40 can separate the communication signal on the bus 30 from the power supply device 10 to prevent the communication signal on the bus 30, i.e., the ac signal, from affecting the power supply device 10. The signal bandwidth range of the communication signal can be 1.6MHz to 30MHz, the power supply signal is a direct current signal, the frequency of the direct current signal is 0Hz, namely the communication signal and the power supply signal occupy different frequency bands, and the signals of the different frequency bands can be transmitted in a co-cable mode, so that the communication signal and the power supply signal can be transmitted in a co-linear mode. The master node 20 may transmit communication signals to the slave nodes 60 via the bus 30 and may also receive communication signals transmitted by the slave nodes 60. The communication signal and the power signal transmitted on the bus 30 may be separated by the separator 50, and the separator 50 connected in series between the bus 30 and the master node 20 transmits the separated communication signal (the communication signal at this time is the communication signal transmitted from the slave node 60) to the communication end of the master node 20, and transmits the separated power signal to the power end of the master node 20, so that the master node 20 receives the normal communication signal and the power signal, and normal transmission of the power signal and the communication signal is achieved. The splitter 50 connected in series between the bus 30 and the slave node 60 transmits the split communication signal (the communication signal at this time is the communication signal transmitted by the master node 20) to the communication terminal of the corresponding slave node 60, and transmits the split power supply signal to the power supply terminal of the corresponding slave node 60, so that the slave node 60 receives the normal communication signal and the power supply signal, and normal transmission of the power supply signal and the communication signal is realized.
Alternatively, the power supply apparatus 10 is located at a position where the plurality of slave nodes 60 are close to the master node 20, or located between the plurality of slave nodes 60, or located at a position where the plurality of slave nodes 60 are far from the master node 20.
Specifically, fig. 4 is a schematic diagram of a location of a power supply device according to an embodiment of the present invention, and referring to fig. 4, the power supply device 10 is located at a position where a plurality of slave nodes 60 are close to a master node 20; fig. 5 is a schematic diagram of another power supply device location provided in the first embodiment of the present invention, and referring to fig. 5, the power supply device 10 is located at a position where a plurality of slave nodes 60 are far away from the master node 20; fig. 6 is a schematic diagram of another power supply device location provided in the first embodiment of the present invention, and referring to fig. 6, the power supply device 10 is located among a plurality of slave nodes 60. The position of the power supply device 10 has the above various arrangement forms, and the access position of the power supply device 10 is flexible, so that the power supply device 10 is convenient to access.
The field bus power supply circuit provided by this embodiment implements separation of a communication signal transmitted on a bus and a power supply device by arranging an inserter between the bus and the power supply device, so as to prevent the communication signal from affecting the power supply device, and implements separation of the communication signal and a power signal by arranging a separator, so that the communication signal transmitted on the bus is transmitted to a communication end of a slave node or a communication end of a master node, and the power signal transmitted on the bus is transmitted to a power supply end of the slave node and a power supply end of the master node, thereby ensuring normal power supply and communication, and implementing collinear transmission of the power signal and the communication signal.
Example two
Fig. 7 is a schematic structural diagram of an interposer according to a second embodiment of the present invention, and referring to fig. 7, in addition to the first embodiment, the interposer 40 is an EMI filter.
The EMI filter is a low-pass filter and can filter high-frequency signals. Since the communication signal transmitted by the bus 30 is an ac signal, the EMI filter can filter out a high frequency signal in the ac signal, and prevent the high frequency signal from interfering with the normal operation of the power supply apparatus 10.
Optionally, the EMI filter includes a common mode inductor L1 and a filter capacitor, and the common mode inductor L is electrically connected to the filter capacitor.
Exemplarily, referring to fig. 7, two input terminals of the common mode inductor L are respectively used as two power supply terminals of the EMI filter and electrically connected to the power supply apparatus 10; two output ends of the common mode inductor L are respectively used as two load ends of the EMI filter and are electrically connected with the bus 30; and filter capacitors are arranged between the two input ends and between the two output ends.
Specifically, as shown in fig. 7, in the EMI filter, a filter capacitor CX is connected between two input ends of the common mode inductor L, and a filter capacitor CY is connected between two output ends of the common mode inductor L. The common mode inductor L is a bidirectional filter which can filter common mode electromagnetic interference on a line, can inhibit the common mode inductor L from emitting electromagnetic interference outwards, and avoids influencing the normal work of other equipment in the same electromagnetic environment.
It should be noted that the EMI filter shown in fig. 7 is only a schematic illustration, and specific connections of components in the EMI filter are not limited herein.
The fieldbus power supply circuit provided by this embodiment, an EMI filter between the bus and the power supply device can filter the high-frequency signal in the communication signal, prevent the interference of the high-frequency signal to the power supply device, and separate the communication signal from the power signal by providing a separator, so that the communication signal transmitted on the bus is transmitted to the communication terminal of the slave node or the communication terminal of the master node, and the power signal transmitted on the bus is transmitted to the power terminal of the slave node and the power terminal of the master node, thereby ensuring normal power supply and communication, and realizing the collinear transmission of the power signal and the communication signal.
EXAMPLE III
Fig. 8 is a schematic structural diagram of a splitter according to a third embodiment of the present invention, and referring to fig. 8, on the basis of the first embodiment, optionally, the splitter 50 includes a power signal extraction module 51 and a communication signal extraction module 52, the power signal extraction module 51 and the communication signal extraction module 52 are both electrically connected to the first port 1 and the second port 2 of the splitter 50, and the first port 1 and the second port 2 are respectively electrically connected to the positive electrode and the negative electrode of the bus 30.
Among them, the power signal extraction module 51 may extract a power signal of the power signal and the communication signal transmitted to the splitter 50, and the communication signal extraction module 52 may extract a communication signal of the power signal and the communication signal transmitted to the splitter 50. The bus 30 is a two-wire bus, the first port 1 of the splitter 50 is electrically connected to the positive electrode line of the bus 30, and the second port 2 of the splitter 50 is electrically connected to the negative electrode line of the bus 30, so that the communication signal and the power signal transmitted on the bus 30 are transmitted to the splitter 50 through the first port 1 and the second port 2.
Referring to fig. 7 and 8, the power signal extraction module 51 may alternatively include a rectifier bridge D and a low pass filter LP, and the rectifier bridge D is electrically connected to the bus 30 through the low pass filter LP.
Specifically, as shown in fig. 8, in the power signal extraction module 51, the first input terminal and the second input terminal of the rectifier bridge D are electrically connected to the first port 1 and the second port 2 of the separator 50, the first input terminal of the rectifier bridge D inputs the positive polarity power signal, and the second input terminal of the rectifier bridge D inputs the negative polarity power signal, so that when the positive electrode and the negative electrode of the bus 30 are connected to the first port 1 and the second port 2 of the separator 50, the positive polarity and the negative polarity do not need to be distinguished, and the wiring is simple and convenient.
Optionally, the fieldbus power supply circuit further includes a power chip U1, the power chip U1 is electrically connected to the power signal extraction module 51, and the power chip U1 is configured to adjust a voltage corresponding to the power signal to a voltage within a preset width range, and output the voltage within the preset width range.
Specifically, the input terminal of the power chip U1 is electrically connected to the power signal extraction module 51, for example, electrically connected to the rectifier bridge D in the power signal extraction module 51, and the output terminal of the power chip U1 is electrically connected to the power supply terminal of the node. The power chip U1 may perform voltage up or voltage down conversion on the voltage corresponding to the power signal output by the power signal extraction module 51, and transmit the converted voltage to the node to satisfy the voltage required by the node. For the splitter 50 connected in series between the bus 30 and the slave node 60, the output terminal of the power chip U1 is electrically connected to the power supply terminal of the slave node 60, the input terminal of the power chip U1 is electrically connected to the output terminal of the rectifier bridge D, and the power chip U1 can adjust the dc voltage output from the output terminal of the rectifier bridge D to a dc voltage in a preset width range, such as 7-60V, so that the bus 30 can be compatible with power voltage line losses of different lengths, and it is ensured that the bus 30 can access more slave nodes 60.
Optionally, the fieldbus power supply circuit further includes a dc power supply BAT, a first inductor L1, and a first capacitor C1, the dc power supply BAT is electrically connected to the power chip U1 through the first inductor L1, and the first capacitor C1 is connected in parallel to two ends of the dc power supply BAT.
The direct current power supply BAT can be electrically connected with a power supply end of the power supply chip U1 and supplies power to the power supply chip U1. The internal resistance of the dc power supply BAT is small, and a first inductor L1 with a sufficiently large inductance value needs to be connected in series at the dc power supply BAT, and the first inductor L1 and the first capacitor C1 can filter the dc power supply BAT to remove ripples in the dc power supply BAT.
Optionally, the communication signal extraction module 52 includes a second capacitor C2, a third capacitor C3 and a first transformer T1, one end of the primary winding of the first transformer T1 is electrically connected to the positive pole of the bus 30 through the second capacitor C2, the other end of the primary winding of the first transformer T1 is electrically connected to the negative pole of the bus through the third capacitor C3, and the first transformer T1 outputs the communication signal.
Specifically, the second capacitor C2, the third capacitor C3 and the primary coil of the first transformer T1 may form a high-pass filter, reduce interference of power supply ripples and low-frequency noise, filter a direct-current signal, allow an alternating-current signal to pass, that is, filter a communication signal and a power supply signal in the power supply signal, and only allow the communication signal to pass, so that the secondary coil of the first transformer T1 outputs the communication signal, and finally, impedance conversion and signal isolation are realized through the first transformer T1.
Optionally, the splitter 50 further includes a second transformer T2, a primary coil of the second transformer T2 is connected in parallel with the primary coil of the first transformer T1, and a secondary coil of the second transformer T2 is electrically connected to the communication chip U2, and is configured to receive a signal output by the communication chip U2 and transmit the received signal to the bus 30.
Specifically, the secondary coil of the first transformer T1 and the secondary coil of the second transformer T2 are both electrically connected to the communication chip U2, and the communication chip U2 may receive the communication signal transmitted by the first transformer T1 and may also transmit the signal to the second transformer T2. The output end of the power chip U1 can be electrically connected to the power end of the communication chip U2, and the power chip U1 adjusts, such as boosts or lowers, the voltage output by the rectifying bridge D to meet the voltage requirement of the node, and outputs the adjusted voltage to the communication chip U2 to supply power to the corresponding node. For the splitter 50 connected in series between the bus 30 and the slave node 60, the first transformer T1 may output a communication signal to the communication chip U2 of the slave node 60, and the communication chip U2 may also transmit a signal to the second transformer T2 and transmit the signal to the bus 30 through the second transformer T2, thereby enabling communication between the master node 20 and the slave node 60. For the splitter 50 connected in series between the bus 30 and the master node 20, the first transformer T1 may output a communication signal to the communication chip U2 of the master node 20, and the communication chip U2 may also transmit a signal to the second transformer T2 and transmit the signal to the bus 30 through the second transformer T2, thereby enabling communication between the master node 20 and the slave node 60.
In the field bus power supply circuit provided by the embodiment, the inserter is arranged between the bus and the power supply device, so that high-frequency signals in communication signals can be filtered, the interference of the high-frequency signals on the power supply device is prevented, the communication signals transmitted on the bus are separated from the power supply device, the separation of the communication signals and power signals is realized by arranging the separator, the power signal extraction module and the communication signal extraction module in the separator can respectively extract the power signals and the communication signals, the normal power supply and communication are ensured, and the collinear transmission of the power signals and the communication signals is realized; and a rectifier bridge connected with the bus is arranged in the power extraction module, the bus does not need to distinguish positive and negative polarities, and the power extraction module can supply power and transmit power without polarities, is concise in wiring and convenient to maintain.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A fieldbus power supply circuit, comprising: the system comprises a power supply device, a main node, a bus, an inserter and a separator;
wherein the inserter is connected in series between the power supply device and the bus, and the power supply device is used for providing a power supply signal to the bus through the inserter;
the main node is electrically connected with the bus and is used for providing communication signals for the bus; the bus receives the power signal and the communication signal;
the splitter is connected in series between the bus and a slave node and between the bus and the master node, the splitter being configured to split the communication signal and the power supply signal on the bus.
2. The circuit of claim 1, wherein the interposer is an EMI filter.
3. The circuit of claim 2, wherein the EMI filter comprises a common mode inductance and a filter capacitance, the common mode inductance and the filter capacitance being electrically connected.
4. The circuit of claim 1, wherein the splitter comprises a power signal extraction module and a communication signal extraction module, the power signal extraction module and the communication signal extraction module each being electrically connected to a first port and a second port of the splitter, the first port and the second port being electrically connected to a positive pole and a negative pole of the bus, respectively.
5. The circuit of claim 4, wherein the power signal extraction module comprises a rectifier bridge and a low pass filter, the rectifier bridge being electrically connected to the bus through the low pass filter.
6. The circuit of claim 4, further comprising a power chip electrically connected to the power signal extraction module, wherein the power chip is configured to adjust a voltage corresponding to the power signal to a voltage within a preset width range and output the voltage within the preset width range.
7. The circuit of claim 5, further comprising a DC power supply, a first inductor, and a first capacitor, wherein the DC power supply is electrically connected to the power chip through the first inductor, and the first capacitor is connected in parallel across the DC power supply.
8. The circuit according to claim 4, wherein the communication signal extraction module comprises a second capacitor, a third capacitor and a first transformer, one end of a primary coil of the first transformer is electrically connected to the positive pole of the bus through the second capacitor, the other end of the primary coil of the first transformer is electrically connected to the negative pole of the bus through the third capacitor, and the first transformer outputs the communication signal.
9. The circuit of claim 8, wherein the splitter further comprises a second transformer, a primary coil of the second transformer is connected in parallel with a primary coil of the first transformer, and a secondary coil of the second transformer is electrically connected to the communication chip for receiving the signal output by the communication chip and transmitting the received signal to the bus.
10. The circuit of claim 1, wherein the power supply device is located at a position where a plurality of the slave nodes are close to the master node, or between a plurality of the slave nodes, or at a position where a plurality of the slave nodes are far from the master node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474673.7A CN114363098A (en) | 2021-12-03 | 2021-12-03 | Power supply circuit for field bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474673.7A CN114363098A (en) | 2021-12-03 | 2021-12-03 | Power supply circuit for field bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114363098A true CN114363098A (en) | 2022-04-15 |
Family
ID=81096629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111474673.7A Pending CN114363098A (en) | 2021-12-03 | 2021-12-03 | Power supply circuit for field bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114363098A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383084A (en) * | 2008-10-14 | 2009-03-11 | 浙江大学 | Isolation type bus supplying communication system |
| CN202663395U (en) * | 2012-07-10 | 2013-01-09 | 湖南伊迈德科技有限公司 | Signal transmission system based on power supply enabled two-wire bus |
| CN103516397A (en) * | 2013-09-17 | 2014-01-15 | 深圳市共进电子股份有限公司 | Method and system for separating electric signal based on power line carrier |
| CN106331563A (en) * | 2016-10-19 | 2017-01-11 | 苏州市纽克斯照明有限公司 | Data signal and DC power source collinear transmission system and method |
| CN107919866A (en) * | 2016-10-08 | 2018-04-17 | 北京中科格励微科技有限公司 | A kind of digital signal isolator |
| US10771281B1 (en) * | 2019-11-04 | 2020-09-08 | Semiconductor Components Industries, Llc | Semi-differential signaling for DSI3 bus enhancement |
-
2021
- 2021-12-03 CN CN202111474673.7A patent/CN114363098A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383084A (en) * | 2008-10-14 | 2009-03-11 | 浙江大学 | Isolation type bus supplying communication system |
| CN202663395U (en) * | 2012-07-10 | 2013-01-09 | 湖南伊迈德科技有限公司 | Signal transmission system based on power supply enabled two-wire bus |
| CN103516397A (en) * | 2013-09-17 | 2014-01-15 | 深圳市共进电子股份有限公司 | Method and system for separating electric signal based on power line carrier |
| CN107919866A (en) * | 2016-10-08 | 2018-04-17 | 北京中科格励微科技有限公司 | A kind of digital signal isolator |
| CN106331563A (en) * | 2016-10-19 | 2017-01-11 | 苏州市纽克斯照明有限公司 | Data signal and DC power source collinear transmission system and method |
| US10771281B1 (en) * | 2019-11-04 | 2020-09-08 | Semiconductor Components Industries, Llc | Semi-differential signaling for DSI3 bus enhancement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6886251B2 (en) | Coupler for power line communication and power over Ethernet | |
| US7456516B2 (en) | Power line terminating circuit and method, and power line relay device | |
| JP4708145B2 (en) | Power line communication device | |
| CN113364489B (en) | Communication transmitting device and receiving device based on direct current power supply line | |
| EP2852069A1 (en) | System for transmitting and receiving a power line communication signal over the power bus of a power electronic converter | |
| CN106374306B (en) | A kind of passive coaxial network converter and Power over Ethernet system | |
| CN112769136A (en) | Filter circuit, power supply equipment and power supply system | |
| CN203313213U (en) | Power line carrier multi-media high-speed broadband Internet terminal device | |
| CN102265522B (en) | Electronic device with a carrier current | |
| CN114363098A (en) | Power supply circuit for field bus | |
| AU2013265061B2 (en) | An electrical system adapted to transfer data and power between devices on a network | |
| CN103595542A (en) | A power supply terminal device, a power supply system and a power supply method | |
| CN108600058A (en) | A kind of ethernet signal transmission interface circuit and the network equipment | |
| RU2584242C2 (en) | Device for connection of two devices via ethernet link and receiving dock of one said devices | |
| CN202695907U (en) | Audio signal transferring and receiving device and audio signal transmission system | |
| CN108112273A (en) | Voltameter and the adaptor module for it | |
| CN213937953U (en) | Repeater with variable bus voltage | |
| KR102464522B1 (en) | Circuit elements for data communication via supply lines | |
| CN216721180U (en) | 86 box control circuit and 86 box based on power line carrier | |
| JP3205149U (en) | Network power supply apparatus and system | |
| CN202085187U (en) | Backward feeding circuit and port as well as backward feeding device | |
| CN205336272U (en) | APF communication system | |
| CN113411534B (en) | Power supply input and output device and video transmission system | |
| US11567282B1 (en) | Fiber access extension over power line drop | |
| CN209844155U (en) | Passive network converter and Ethernet power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |