CN114826329A - Signal transmission device and method - Google Patents
Signal transmission device and method Download PDFInfo
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- CN114826329A CN114826329A CN202210331245.7A CN202210331245A CN114826329A CN 114826329 A CN114826329 A CN 114826329A CN 202210331245 A CN202210331245 A CN 202210331245A CN 114826329 A CN114826329 A CN 114826329A
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000003990 capacitor Substances 0.000 claims description 36
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005669 field effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
Abstract
The embodiment of the invention discloses a signal transmission device and a signal transmission method. According to an embodiment of the present invention, there is provided a signal transmission apparatus including a dc power supply, a main device, a dc power supply line, and a load, the main device including a first switch, wherein: the master device is configured to transmit a signal to the load through the dc supply line when the first switch is in an off state; and the direct current power supply is configured to supply power to the load through the direct current power supply line when the first switch is in a conducting state. Based on the technical scheme, when the first switch in the main equipment is turned off, the direct current power supply line is used for transmitting signals to the load, no additional signal transmission line is needed, a wireless signal transmission mode is avoided, the wiring mode can be simplified, the signal transmission can be reliably carried out, and the system cost is reduced.
Description
Technical Field
The embodiment of the invention relates to the field of electronic power, in particular to a signal transmission device and a signal transmission method.
Background
It is a common power supply method in the power electronics field to supply power to a plurality of loads by using a dc power supply line, however, if signal transmission/control operations are required to be performed on a plurality of loads in a signal transmission device, it is usually necessary to add a signal transmission line or use a wireless transmission method.
However, the additional addition of the signal transmission line increases the complexity of the wiring and adversely affects the stability of the system, while the wireless transmission method greatly increases the system cost and is susceptible to wireless electromagnetic interference, which adversely affects the reliability of the signal transmission and, in some cases, involves the problem of confidentiality of the signal transmission.
Disclosure of Invention
Embodiments of the present invention provide a signal transmission apparatus and method that can perform signal transmission using a dc power line, can simplify a wiring scheme, reliably perform signal transmission, and reduce system costs, compared to a conventional signal transmission apparatus that uses an additional signal transmission line or transmits a signal in a wireless signal transmission scheme.
In a first aspect, an embodiment of the present invention provides a signal transmission apparatus, where the apparatus includes: direct current power supply, main equipment, direct current supply line and load, the main equipment includes first switch, wherein: the master device is configured to transmit a signal to the load through the DC supply line when the first switch is in an off state; and the direct current power supply is configured to supply power to the load through the direct current power supply line when the first switch is in a conducting state.
According to the signal transmission apparatus provided in the first aspect, the master device further includes a control source and a master signal source, and the load includes a load receiving circuit, wherein: the control source is configured to control the first switch to be turned on and off; the main signal source is configured to transmit a signal to the load receiving circuit through the direct current supply line when the first switch is in an off state.
According to the signal transmission apparatus provided in the first aspect, the master device further includes a master receiving circuit, and the load further includes a load signal source, wherein: the load signal source is configured to transmit a signal to the main receiving circuit through the direct current supply line when the first switch is in an off state.
According to a first aspect, there is provided a signal transmission device, wherein the load further comprises a second switch and a load capacitor, wherein: when the first switch is in an off state and the second switch is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and in the event that the voltage on the load capacitance is not available to clamp the voltage on the dc supply line, the load signal source is configured to transmit a signal to the primary receive circuit through the dc supply line.
According to a first aspect, there is provided a signal transmission device, wherein the load further comprises a second switch and a load capacitor, wherein: when the first switch is in an off state and the second switch is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and in the event that the voltage on the load capacitance is not available to clamp the voltage on the dc supply line, the primary signal source is configured to transmit a signal to the load receiving circuit through the dc supply line.
According to the signal transmission device provided by the first aspect, the first switch is connected between the dc power supply and the positive electrode of the dc power supply line, or the first switch is connected between the dc power supply and the negative electrode of the dc power supply line.
According to the signal transmission apparatus provided by the first aspect, the main signal source and the load signal source are configured to transmit signals in a timed or non-timed manner.
According to the signal transmission apparatus provided by the first aspect, the first terminal and the second terminal of the dc power supply are respectively connected to the first terminal and the second terminal of the main device, the first terminal of the main device is further connected to the first terminal of the first switch, the second terminal of the first switch is connected to the third terminal of the main device and the first terminal of the main signal source, the third terminal of the main device is further connected to the positive electrode of the dc power supply line, the second terminal of the main signal source is connected to the third terminal of the first switch via the control source, the second terminal of the main device is further connected to the fourth terminal of the main device, and the fourth terminal of the main device is further connected to the negative electrode of the dc power supply line; the first terminal of the second switch is connected to the first terminal of the load and the first terminal of the load receiving circuit, the first terminal of the load is further connected to the positive pole of the direct current supply line, the second terminal of the second switch is connected to the second terminal of the load via the load capacitor, and the second terminal of the load is further connected to the negative pole of the direct current supply line.
According to the signal transmission apparatus provided by the first aspect, the first terminal and the second terminal of the dc power supply source are respectively connected to the first terminal and the second terminal of the master device, the first terminal of the master device is further connected to the third terminal of the master device and the first terminal of the master signal source, the third terminal of the master device is further connected to the positive pole of the dc power supply line, the second terminal of the master device is further connected to the first terminal of the first switch, the second terminal of the first switch is connected to the fourth terminal of the master device, the fourth terminal of the master device is further connected to the negative pole of the dc power supply line, and the second terminal of the master signal source is connected to the third terminal of the first switch via the control source; the first terminal of the second switch is connected to the first terminal of the load and the first terminal of the load receiving circuit, the first terminal of the load is further connected to the positive pole of the direct current supply line, the second terminal of the second switch is connected to the second terminal of the load via the load capacitor, and the second terminal of the load is further connected to the negative pole of the direct current supply line.
In a second aspect, an embodiment of the present invention provides a signal transmission method for a signal transmission apparatus, where the signal transmission apparatus includes a dc power supply, a main device, a dc power supply line, and a load, the main device includes a first switch, and the method includes: transmitting a signal to the load through the DC power supply line using the master device when the first switch is in an off state; and when the first switch is in a conducting state, the direct current power supply is utilized to supply power to the load through the direct current power supply line.
According to a second aspect, there is provided a signal transmission method, in which the master device further includes a control source and a master signal source, the load includes a load receiving circuit, and when the first switch is in an off state, the master device is used to transmit a signal to the load through the dc power supply line, the method including: controlling the first switch to be turned on and off by using the control source; and when the first switch is in an off state, the main signal source is utilized to transmit signals to the load receiving circuit through the direct current supply line.
According to a second aspect, there is provided a signal transmission method, wherein the master device further comprises a master receiving circuit, the load further comprises a load signal source, and the method further comprises: and when the first switch is in an off state, the load signal source is utilized to transmit signals to the main receiving circuit through the direct current power supply line.
According to a second aspect, there is provided a signal transmission method, in which the load further includes a second switch and a load capacitor, and when the first switch is in an off state, the load signal source is used to transmit a signal to the main receiving circuit through the dc power supply line, the method including: when the first switch is in an off state and the second switch is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and transmitting a signal to the main receiving circuit through the dc supply line using the load signal source if the voltage on the load capacitor is not available to clamp the voltage on the dc supply line.
According to a second aspect, there is provided a signal transmission method, in which the load further includes a second switch and a load capacitor, and when the first switch is in an off state, the signal is transmitted to the load receiving circuit through the dc power supply line by using the main signal source, including: when the first switch is in an off state and the second switch is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and transmitting a signal to the load receiving circuit through the dc supply line using the main signal source if the voltage on the load capacitor is not available to clamp the voltage on the dc supply line.
The signal transmission device and the signal transmission method can transmit signals to the load through the direct current power supply line when the switch in the main equipment is disconnected, an additional signal transmission line does not need to be added, and a wireless transmission mode can be avoided, so that a wiring mode can be simplified, the signals can be reliably transmitted, and the system cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a signal transmission device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a signal transmission device according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a signal transmission device according to a third embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating a signal transmission method according to a first embodiment of the present invention; and
fig. 5 is a schematic flowchart illustrating a signal transmission method according to a second embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
To solve one or more of the problems of the prior art, embodiments of the present invention provide a signal transmission apparatus and method. First, a signal transmission device according to an embodiment of the present invention will be described.
Fig. 1 is a schematic structural diagram of a signal transmission device according to a first embodiment of the present invention. As shown in fig. 1, the signal transmission device may include a DC power supply 105 (e.g., an AC/DC power supply, a DC/DC power supply, a battery power supply, or the like), a main device 101, a DC power supply line 100, a load 111, and the like, wherein the main device 101 may include a switch 103. In some embodiments, the signal transmission device may further include a load 121.
As an example, the master device 101 may be configured to transmit a signal to the load 111 over the dc supply line 100 when the switch 103 is in an off state; and the dc power supply 105 may be configured to supply power to the load 111 through the dc power supply line 100 when the switch 103 is in the on state.
As one example, the master device 101 may further include a control source 104, a master signal source 102, and the like, and the load 111 may include a load receiving circuit 113, and the like. Wherein the control source 104 may be configured to control the on and off of the switch 103; the primary signal source 102 may be configured to transmit a signal to the load receiving circuit 113 over the dc power supply line 100 when the switch 103 is in an off state.
As an example, the load 111 may further include a switch 112, a load capacitor 114, a functional module 115, and the like, wherein when the switch 103 is in an off state and the switch 112 is in an off state, the voltage on the load capacitor 114 cannot be used to clamp the voltage on the dc power supply line 100; and in the event that the voltage on the load capacitance 114 cannot be used to clamp the voltage on the dc supply line 100, the main signal source 102 may be configured to transmit a signal to the load receiving circuit 113 over the dc supply line 100.
As an example, the switch 112 may be a diode, a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), or other component with a switching function, and it is understood that the following is described with the switch as a diode, which is provided as an example only and should not be construed as limiting.
As shown in fig. 1, the first terminal and the second terminal of the dc power supply 105 may be connected to the first terminal 101-1 and the second terminal 101-2 of the master device 101, respectively, the first terminal 101-1 of the master device 101 may be connected to the first terminal 103-1 of the switch 103, the second terminal 103-2 of the switch 103 may be connected to the third terminal 101-3 of the master device 101, the second terminal 101-2 of the master device 101 may be connected to the fourth terminal 101-4, the third terminal 101-3 and the fourth terminal 101-4 of the master device 101 may be connected to the positive pole and the negative pole of the dc power supply line 100, respectively, the first terminal 102-1 of the master signal source 102 may be connected to the third terminal 101-3 of the master device 101 and the second terminal 103-2 of the switch 103, the second terminal 102-2 of the master signal source 102 may be connected to the first terminal 104-1 of the control source 104, a second terminal 104-2 of control source 104 may be connected to a third terminal of switch 103 such that second terminal 104-2 of control source 104 may output a signal for controlling the turning on and off of switch 103.
As shown in FIG. 1, the first and second terminals 111-1 and 111-2 of the load 111 are connected to the positive and negative poles of the DC power supply line 100 at line B-B', respectively; a first terminal 111-1 of the load 111 may be internally connected to a first terminal 112-1 (e.g., an anode) of a switch 112 (e.g., a diode) and a first terminal 113-1 of the load receiving circuit 113, a second terminal 112-2 (e.g., a cathode) of the switch 112 (e.g., a diode) may be connected to a first terminal 114-1 of the capacitor 114 and a first terminal 115-1 of the functional module 115, and a second terminal 114-2 of the capacitor 114 may be connected to a second terminal 111-2 of the load 111.
As an example, the switch 103 may be turned off in a short time under the control of the control source 104, and the power supply from the dc power supply 105 to the third terminal 101-3 of the main device 101 is turned off, and thus the power supply to the load 111 is turned off. When the switch 103 is in the off state and the voltage provided by the main signal source 102 is less than the voltage on the load capacitor 114, the switch 112 inside the load 111 is in the off state, so the switch 112 can isolate the voltage on the load capacitor 114 from the first terminal 111-1 of the load 111, the isolation is such that the voltage on the load capacitor 114 cannot be used to clamp the voltage on the first terminal 111-1 of the load 111 and the positive pole of the dc power supply line 100, the inability of the voltage on the load capacitor 114 to clamp means that the voltage provided by the main signal source 102 can be freely varied without being truncated, so the main signal source 102 can transmit a signal to the positive pole of the dc power supply line 100 through the first terminal 102-1 of the main signal source 102 and the third terminal 101-3 of the main device 101, the signal can be transmitted through the point a to the point B of the dc power supply line 100, the signal may then be transmitted to the load receiving circuit 113 via the first terminal 111-1 of the load 111 and the first terminal 113-1 of the load receiving circuit 113.
Furthermore, after the main signal source 102 completes transmission of the signal, the switch 103 may be turned on under the control of the control source 104, so that the dc power supply 105 may continue to supply power to the load 111 through the dc power supply line 100.
Through the signal transmission device provided by the embodiment of the invention, the signal transmission can be completed by using the direct current power supply line under the condition that the signal transmission line is not additionally added, and if the switch in the main equipment is short in turn-off time and long in turn-on time, the load can be continuously subjected to direct current power supply, the time that the load is not supplied with power is short and can be ignored, so that the normal work of the load is not influenced. Meanwhile, the transmission of the signals is completed in a wired mode, the possibility of interference by electromagnetic signals can be greatly reduced, and the reliability, confidentiality and the like of signal transmission are ensured.
As another example, in addition to the above-described manner of unidirectional signal transmission in which a signal is transmitted from the main signal source 102 to the load receiving circuit 113 through the dc power supply line 100, the following embodiments may provide a manner of bidirectional signal transmission in which a signal may be transmitted from a load to a main device via a dc power supply line, in addition to transmitting a signal from the main device to the load via the dc power supply line. Referring to fig. 2, fig. 2 is a schematic structural diagram of a signal transmission device according to a second embodiment of the present invention.
Specifically, the difference between the embodiment shown in fig. 2 and the embodiment shown in fig. 1 is mainly that the master device 201 of the embodiment of fig. 2 may include a master receiving circuit 206 in addition to the various components shown in fig. 1, and the load 211 may include a load signal source 216 in addition to the various components shown in fig. 1.
Specifically, the signal transmission device shown in fig. 2 includes a dc power supply line 200, a master 201, a dc power supply 205, a load 211, a load 221, and the like. The master device 201 may include a master signal source 202, a control source 204, a switch 203, a master receiving circuit 206, and the like, and the load 211 may include a switch 212, a load capacitor 214, a load receiving circuit 213, a function module 215, a load signal source 216, and the like.
As an example, the switch 212 may be a diode, a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), or other component with a switching function, and it is understood that the following is described with the switch as a diode, which is provided as an example only and should not be construed as limiting.
As one example, the load signal source 216 may be configured to transmit a signal to the primary receive circuit 206 through the dc supply line 200 when the switch 203 is in an off state. In this way, bidirectional transmission of signals can be achieved without adding additional signal transmission lines.
As shown in fig. 2, the first terminal and the second terminal of the dc power supply 205 may be connected to the first terminal 201-1 and the second terminal 201-2 of the main device 201, respectively, the first terminal 201-1 of the main device 201 may be connected to the first terminal 203-1 of the switch 203, the second terminal 203-2 of the switch 203 may be connected to the third terminal 201-3 of the main device 201, the second terminal 201-2 of the main device 201 may be connected to the fourth terminal 201-4, and the third terminal 201-3 and the fourth terminal 201-4 of the main device 201 may be connected to the positive electrode and the negative electrode of the dc power supply line 200, respectively.
The first terminal 202-1 of the main signal source 202 and the first terminal 206-1 of the main receiving circuit 206 may be connected to the second terminal 203-2 of the switch 203, the second terminal 202-2 of the main signal source 202 may be connected to the first terminal 204-1 of the control source 204, and the second terminal 204-2 of the control source may be connected to the third terminal of the switch 203, so that the second terminal 204-2 of the control source may output a signal for controlling the on and off of the switch 203.
The first terminal 211-1 and the second terminal 211-2 of the load 211 are connected to the positive pole and the negative pole of the direct current supply line 200 at points B and B', respectively; the first terminal 211-1 of the load 211 may be internally connected to the first terminal 212-1 of the switch 212, the first terminal 213-1 of the load receive circuit 213 and the first terminal 216-1 of the load signal source 216, and the second terminal 212-2 of the switch 212 may be internally connected to the first terminal 214-1 of the capacitor 214 and the first terminal 215-1 of the functional module 215, and the second terminal 214-2 of the capacitor 214 may be connected to the second terminal 211-2 of the load 211.
As an example, for the direction of signal transmission from the main signal source 202 to the load receiving circuit 213 via the dc power supply line 200, when the switch 203 is in the off state and the switch 212 is in the off state, the voltage on the load capacitance 214 cannot be used to clamp the voltage on the dc power supply line 200; and in the event that the voltage on the load capacitance 214 cannot be used to clamp the voltage on the dc supply line 200, the main signal source 202 may be configured to transmit a signal to the load receiving circuit 213 via the dc supply line 200.
Specifically, the switch 203 may be turned off in a short time under the control of the control source 204, and the power supply from the dc power supply 205 to the third terminal 201-3 of the main device 201 is turned off, and thus the power supply to the load 211 is turned off. When the switch 203 is in the off state and the voltage provided by the main signal source 202 is lower than the voltage on the load capacitor 214, the switch 212 inside the load 211 may be in the off state, and thus the switch 212 may isolate the voltage on the load capacitor 214 from the first terminal 211-1 of the load 211, such isolation being such that the voltage on the load capacitor 214 cannot be used to clamp the voltage on the first terminal 211-1 of the load 211 and the positive pole of the dc power supply line 200, and the inability of the voltage on the load capacitor 214 to be used to clamp means that the voltage provided by the main signal source 202 may be freely varied without being cut off, and thus the main signal source 202 may transmit a signal to the positive pole (e.g., point a) of the dc power supply line 200 through the first terminal 202-1 of the main signal source 202 and the third terminal 201-3 of the main device 201 and through point B of the dc power supply line, the signal may then be transmitted to the load receive circuit 213 via the first terminal 211-1 of the load 211 and the first terminal 213-1 of the load receive circuit 213.
Similarly, for the direction in which the load signal source 216 transmits a signal to the main receiving circuit 206, when the switch 203 is in the off state and the switch 212 is in the off state, the voltage on the load capacitance 214 cannot be used to clamp the voltage on the dc supply line 200; and in the event that the voltage on the load capacitance 214 cannot be used to clamp the voltage on the dc supply line 200, the load signal source 216 may be configured to transmit a signal to the primary receiving circuit 206 over the dc supply line 200.
Specifically, the switch 203 may be turned off in a short time under the control of the control source 204, and the power supply from the dc power supply 205 to the third terminal 201-3 of the main device 201 is turned off, and thus the power supply to the load 211 is turned off. When the switch 203 is in the off state and the voltage provided by the load signal source 216 is lower than the voltage on the load capacitor 214, the switch 212 inside the load 211 may be in the off state, and thus the switch 212 may isolate the voltage on the load capacitor 214 from the first terminal 211-1 of the load 211, such isolation being such that the voltage on the load capacitor 214 cannot be used to clamp the voltage on the first terminal 211-1 of the load 211 and the positive pole of the dc power supply line 200, and the inability of the voltage on the load capacitor 214 to be used to clamp means that the voltage provided by the load signal source 216 may be freely varied without being cut off, and thus, the load signal source 216 may transmit a signal to the positive pole (e.g., point B) of the dc power supply line 200 through the first terminal 216-1 of the load signal source 216 and the first terminal 211-1 of the load 211 and pass through point a of the dc power supply line, the signal may then be transmitted to the main receiving circuit 206 via the third terminal 201-3 of the main device 201 and the first terminal 206-1 of the main receiving circuit 206.
As an example, after the main signal source 202 or the load signal source 216 completes transmitting the signal, the switch 203 may be turned on under the control of the control source 204, so that the dc power supply 205 may continue to supply power to the load 211.
As one example, the primary signal source 202 or the load signal source 216 may transmit signals in some agreed manner, e.g., timed or non-timed.
By the above method, bidirectional signal transmission can be realized on the direct current power supply line 200, so that a plurality of master devices and a plurality of slave devices on the direct current power supply line 200 can be controlled and interactive communication can be realized therebetween; and has advantages such as simple wiring (for example, only a direct current power supply line is needed to realize transmission of signals), strong interference resistance and strong confidentiality.
As an example, an embodiment of the present invention further provides a signal transmission apparatus, as shown in fig. 3, and fig. 3 shows a schematic structural diagram of the signal transmission apparatus provided in a third embodiment of the present invention.
The signal transmission apparatus shown in fig. 3 is similar to the signal transmission apparatus shown in fig. 1, except that the components in the master device are connected in a different manner, for example, in fig. 1, the switch 103 may be connected between the dc power supply 105 and the positive pole of the dc power supply line 100, and in fig. 3, the switch 303 may be connected between the dc power supply 305 and the negative pole of the dc power supply line 300, the details of which will be described in detail below.
As shown in fig. 3, the signal transmission apparatus may include: the dc power supply line 300, the master device 301, the dc power supply 305, the load 311, the load 321, and the like, wherein the master device 301 may include a master signal source 302, a control source 304, a switch 303, and the like, and the load 311 may include a switch 312, a load capacitor 314, a load receiving circuit 313, a functional module 315, and the like.
As an example, the switch 312 may be a diode, a Metal Oxide Semiconductor Field Effect Transistor (MOSFET), or other component with a switching function, and it is understood that the following is described with the switch as a diode, which is provided as an example only and should not be construed as limiting.
Wherein a first terminal and a second terminal of the direct current power supply 305 may be connected to a first terminal 301-1 and a second terminal 301-2 of the master device 301, respectively, the first terminal 301-1 of the master device 301 may be internally connected to a third terminal 301-3 of the master device 301, the second terminal 301-2 of the master device 301 may be connected to a first terminal 303-1 of the switch 303, the second terminal 303-2 of the switch 303 may be connected to a fourth terminal 301-4 of the master device 301, the first terminal 302-1 of the master signal source 302 may be connected to the first terminal 301-1 and the third terminal 301-3 of the master device 301, the second terminal 302-2 of the master signal source 302 may be connected to a first terminal 304-1 of the control source 304, the second terminal 304-2 of the control source 304 may be connected to the switch 303, the third terminal 301-3 and the fourth terminal 301-4 of the master device 301 may be connected to the positive and negative poles of the dc supply line 300 at line a-a', respectively; the first terminal 311-1 and the second terminal 311-2 of the load 311 may be connected to the positive and negative poles of the dc supply line 300 at line B-B', respectively; a first terminal 311-1 of the load 311 may be internally connected to a first terminal 312-1 (e.g., an anode) of a switch 312 (e.g., a diode) and a first terminal 313-1 of the load receiving circuit 313, a second terminal 312-2 (e.g., a cathode) of the switch 312 (e.g., a diode) may be connected to a first terminal 314-1 of the capacitor 314 and a first terminal 315-1 of the function module 315, and a second terminal 314-2 of the capacitor 314 may be connected to a second terminal 311-2 of the load 311.
It can be seen that in fig. 1, switch 103 is connected between first terminal 101-1 and third terminal 101-3 of master device 101, while in fig. 3, switch 303 is connected between second terminal 301-2 and fourth terminal 301-4 of master device 301. The working principles of the two are the same, and are not described herein again for the sake of simplifying the description.
It will be appreciated that an arrangement similar to the signalling arrangement shown in figure 2 may be provided, but in figure 2 the switch 203 is connected between the first and third terminals of the master device, and in other embodiments the switch in the master device may be connected between the second and fourth terminals of the master device (not shown in the figures) (similar to the signalling arrangement shown in figure 3).
In the above embodiment, the dc power supply line may have a plurality of loads and a plurality of masters at other places (for example, C-C ') in addition to the lines a-a ' and B-B ', which is not limited by the present invention.
In the above-described embodiments, the direct-current power supply may be an AC-DC power supply, a DC-DC power supply, a battery power supply, or the like.
In the above embodiments, the signal transmission means may have one or more of a main signal source or a load signal source.
In addition, an embodiment of the present invention further provides a signal transmission method, which is applied to the signal transmission device described above, as shown in fig. 4, fig. 4 shows a schematic flow diagram of the signal transmission method provided in the first embodiment of the present invention.
As one example, the method includes: s410, when a first switch in the main equipment is in an off state, the main equipment is utilized to transmit signals to a load through a direct current power supply line; and S420, when the first switch in the main equipment is in a conducting state, the direct current power supply is used for supplying power to the load through the direct current power supply line.
As an example, transmitting a signal to a load through a dc power line with a master device while a first switch in the master device is in an off state, includes: controlling the on and off of a first switch in the master device by using a control source; when a first switch in the main equipment is in an off state, a signal is transmitted to a load receiving circuit through a direct current power supply line by using a main signal source.
As an example, referring to fig. 5, fig. 5 shows a schematic flow chart of a signal transmission method provided by a second embodiment of the present invention. As shown in fig. 5, the method includes: s510, when a first switch in the main equipment is in an off state, a main signal source is utilized to transmit a signal to a load receiving circuit through a direct current power supply line; s520, when a first switch in the main equipment is in a turn-off state, a load signal source is utilized to transmit a signal to a main receiving circuit through a direct current power supply line; and S530, when the first switch in the main equipment is in a conducting state, the direct current power supply is used for supplying power to the load through the direct current power supply line.
As an example, transmitting a signal to a main receiving circuit through a dc power supply line with a load signal source while a first switch in a main device is in an off state, includes: when the first switch in the master is in an off state and the second switch in the load is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and transmitting a signal to the main receiving circuit through the dc supply line using the load signal source if the voltage on the load capacitor is not available for clamping the voltage on the dc supply line.
As an example, transmitting a signal to a load receiving circuit through a dc power supply line with a primary signal source while a first switch in a primary device is in an off state, includes: when the first switch in the master is in an off state and the second switch in the load is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and transmitting a signal to the load receiving circuit through the dc supply line using the main signal source if the voltage on the load capacitor is not available to clamp the voltage on the dc supply line.
It is to be understood that the order of the various blocks shown in the flow diagrams is provided by way of example only and not by way of limitation, and that the order may be deleted, added, and/or rearranged without departing from the spirit and scope of the present disclosure.
Details regarding the above signal transmission method are described in the above description of the signal transmission apparatus, and therefore, for convenience of description, are not described herein again.
To sum up, the signal transmission apparatus and method provided in the embodiments of the present invention can complete signal transmission on a dc power supply line, and specifically, by controlling on and off of a switch in a main device and transmitting a signal during off of the switch in the main device, unidirectional transmission and bidirectional transmission of the signal can be achieved, complexity of multi-master/multi-load signal transmission and control on the dc power supply line can be simplified/reduced, and system cost is reduced.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (12)
1. A signal transmission apparatus comprising a dc power supply, a main device, a dc power supply line, and a load, the main device including a first switch, wherein:
the master device is configured to transmit a signal to the load through the DC supply line when the first switch is in an off state; and
the DC power supply is configured to supply power to the load through the DC power supply line when the first switch is in a conductive state.
2. The apparatus of claim 1, wherein the master device further comprises a control source and a master signal source, and wherein the load comprises a load receiving circuit, and wherein:
the control source is configured to control the first switch to be turned on and off;
the main signal source is configured to transmit a signal to the load receiving circuit through the direct current supply line when the first switch is in an off state.
3. The apparatus of claim 2, wherein the master device further comprises a master receive circuit, wherein the load further comprises a source of a load signal, and wherein:
the load signal source is configured to transmit a signal to the main receiving circuit through the direct current supply line when the first switch is in an off state.
4. The apparatus of claim 3, wherein the load further comprises a second switch and a load capacitor, wherein:
the voltage on the load capacitance is not available to clamp the voltage on the dc supply line when the first switch is in an off state and the second switch is in an off state; and
in the event that the voltage on the load capacitance is not available to clamp the voltage on the dc supply line, the load signal source is configured to transmit a signal to the primary receive circuit through the dc supply line.
5. The apparatus of claim 2, wherein the load further comprises a second switch and a load capacitance, wherein:
when the first switch is in an off state and the second switch is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and
in the event that the voltage on the load capacitance is not available to clamp the voltage on the dc supply line, the primary signal source is configured to transmit a signal to the load receiving circuit through the dc supply line.
6. The apparatus of claim 1,
the first switch is connected between the dc power supply and a positive electrode of the dc power supply line, or the first switch is connected between the dc power supply and a negative electrode of the dc power supply line.
7. The apparatus of claim 3,
the main signal source and the load signal source are configured to transmit signals in a timed or non-timed manner.
8. A signal transmission method for a signal transmission apparatus including a dc power supply source, a master device, a dc power supply line, and a load, the master device including a first switch, the method comprising:
transmitting a signal to the load through the DC power supply line using the master device when the first switch is in an off state; and
and when the first switch is in a conducting state, the direct current power supply is utilized to supply power to the load through the direct current power supply line.
9. The method of claim 8, wherein the master device further comprises a control source and a master signal source, wherein the load comprises a load receiving circuit, and wherein transmitting a signal to the load through the dc power line using the master device when the first switch is in the off state comprises:
controlling the first switch to be turned on and off by using the control source;
and when the first switch is in an off state, the main signal source is utilized to transmit signals to the load receiving circuit through the direct current supply line.
10. The method of claim 9, wherein the master device further comprises a master receive circuit, wherein the load further comprises a load signal source, and wherein the method further comprises:
and when the first switch is in an off state, the load signal source is utilized to transmit signals to the main receiving circuit through the direct current power supply line.
11. The method of claim 10, wherein the load further comprises a second switch and a load capacitor, and wherein transmitting a signal to the main receiving circuit through the dc supply line using the load signal source when the first switch is in an off state comprises:
when the first switch is in an off state and the second switch is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and
and transmitting a signal to the main receiving circuit through the DC power supply line by the load signal source if the voltage on the load capacitor cannot be used to clamp the voltage on the DC power supply line.
12. The method of claim 9, wherein the load further comprises a second switch and a load capacitor, and wherein transmitting a signal to the load receiving circuit through the dc supply line using the main signal source when the first switch is in an off state comprises:
when the first switch is in an off state and the second switch is in an off state, the voltage on the load capacitance cannot be used to clamp the voltage on the dc supply line; and
transmitting a signal to the load receiving circuit through the DC supply line using the primary signal source in the event that the voltage on the load capacitance is not available to clamp the voltage on the DC supply line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210331245.7A CN114826329A (en) | 2022-03-31 | 2022-03-31 | Signal transmission device and method |
| TW111127821A TWI812364B (en) | 2022-03-31 | 2022-07-25 | Signal transmission device and method |
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| CN202210331245.7A CN114826329A (en) | 2022-03-31 | 2022-03-31 | Signal transmission device and method |
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| CN114826329A true CN114826329A (en) | 2022-07-29 |
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| KR20130109879A (en) * | 2012-03-28 | 2013-10-08 | 주식회사 인터파워 | Dc electronic switch for dc distribution systems |
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| TW202341690A (en) | 2023-10-16 |
| TWI812364B (en) | 2023-08-11 |
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