CN211018800U - Communication circuit and electrical equipment - Google Patents
Communication circuit and electrical equipment Download PDFInfo
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- CN211018800U CN211018800U CN201921887619.3U CN201921887619U CN211018800U CN 211018800 U CN211018800 U CN 211018800U CN 201921887619 U CN201921887619 U CN 201921887619U CN 211018800 U CN211018800 U CN 211018800U
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Abstract
The utility model discloses a communication circuit and electrical equipment, communication circuit includes: the output end of the first communication device is connected with the first input end of the first transmission circuit so as to convert the output signal of the first communication device into a first power supply signal through the first transmission circuit, the output end of the second communication device is connected with the first input end of the second transmission circuit so as to convert the output signal of the second communication device into a second power supply signal through the second transmission circuit, the input end of the first communication device is connected with the first output end of the first transmission circuit so as to receive the second power supply signal, and the input end of the second communication device is connected with the first output end of the second transmission circuit so as to receive the first power supply signal. The communication circuit converts the output signal of the communication device into a power supply signal, thereby enhancing the signal driving capability and improving the anti-interference capability.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to a communication circuit and electrical equipment.
Background
At present, communication between two communication devices (such as controllers) is mainly achieved through direct connection of resistors or addition of an RS485 communication module. However, the direct connection method requires the communication device to provide high and low levels, but the current output capability of the communication device is not enough, and the anti-interference capability is low, so the communication method is not suitable for long-distance transmission, and the RS485 communication module is too high in cost and not economical.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent.
Therefore, an object of the utility model is to provide a communication circuit to through converting communication device's output signal into mains operated signal, strengthened signal driving ability, improve the interference killing feature.
A second object of the present invention is to provide an electrical apparatus.
In order to achieve the above object, the present invention provides a communication circuit, including a first communication device, a second communication device, a first transmission circuit and a second transmission circuit, wherein an output end of the first communication device is connected to a first input end of the first transmission circuit, an input end of the first communication device is connected to a first output end of the first transmission circuit, an output end of the second communication device is connected to a first input end of the second transmission circuit, an input end of the second communication device is connected to a first output end of the second transmission circuit, a second output end of the first transmission circuit is connected to a second input end of the second transmission circuit, and a second input end of the first transmission circuit is connected to a second output end of the second transmission circuit; the first transmission circuit is used for converting an output signal of the first communication device into a first power supply signal and transmitting the first power supply signal to the second communication device through the second transmission circuit, and the second transmission circuit is used for converting an output signal of the second communication device into a second power supply signal and transmitting the second power supply signal to the first communication device through the first transmission circuit.
According to the utility model discloses a communication circuit converts the output signal of first communication device into first mains operated signal through first transmission circuit, provides second communication device, converts the output signal of second communication device into second mains operated signal through second transmission circuit, provides first communication device, from this, draws the great reinforcing signal driving force of output through forcing, has improved the interference killing feature.
Additionally, the utility model discloses a communication circuit can also have following additional technical characterstic:
in some examples, the first transmission circuit includes: the input end of the first transmitting sub-circuit is connected with the output end of the first communication device, and the output end of the first transmitting sub-circuit is connected with the second input end of the second transmission circuit; and the input end of the first receiving sub-circuit is connected with the second output end of the second transmission circuit, and the output end of the first receiving sub-circuit is connected with the input end of the first communication device.
In some examples, the first transmit sub-circuit comprises: a first end of the first switching tube is connected with a first voltage source, and a second end of the first switching tube is connected with a second input end of the second transmission circuit; one end of the first resistor is connected with the first voltage source, and the other end of the first resistor is connected with the control end of the first switching tube; one end of the second resistor is connected with the control end of the first switching tube; a second end of the second switch tube is connected with the other end of the second resistor, and a first end of the second switch tube is grounded; one end of the third resistor is connected with the control end of the second switching tube, and the other end of the third resistor is grounded; one end of the fourth resistor is connected with the control end of the second switching tube, and the other end of the fourth resistor is connected with the output end of the first communication device; a second end of the third switching tube is connected with a second end of the first switching tube, and a first end of the third switching tube is connected with an output end of the first communication device; one end of the fifth resistor is connected with the control end of the third switching tube, and the other end of the fifth resistor is connected with the first end of the third switching tube; one end of the sixth resistor is connected with the control end of the third switching tube, and the other end of the sixth resistor is connected with the first voltage source; one end of the seventh resistor is connected with the second end of the first switching tube and the second end of the third switching tube respectively, and the other end of the seventh resistor is connected with the second input end of the second transmission circuit.
In some examples, the first receive sub-circuit comprises: one end of the eighth resistor is connected with the first voltage source, and the other end of the eighth resistor is connected with the second output end of the second transmission circuit; one end of the ninth resistor is connected with the second output end of the second transmission circuit, and the other end of the ninth resistor is connected with the input end of the first communication device; the anode of the first diode is connected with the input end of the first communication device, and the cathode of the first diode is connected with the first voltage source; and one end of the first capacitor is connected with the anode of the first diode, and the other end of the first capacitor is grounded.
In some examples, the second transmission circuit includes: the input end of the second transmitting sub-circuit is connected with the output end of the second communication device, and the output end of the second transmitting sub-circuit is connected with the second input end of the first transmission circuit; and the input end of the second receiving sub-circuit is connected with the second output end of the first transmission circuit, and the output end of the second receiving sub-circuit is connected with the input end of the second communication device.
In some examples, the second transmit sub-circuit comprises: a first end of the fourth switching tube is connected with a second voltage source; one end of the tenth resistor is connected with the second voltage source, and the other end of the tenth resistor is connected with the control end of the fourth switching tube; one end of the eleventh resistor is connected with the control end of the fourth switching tube; a second end of the fifth switching tube is connected with the other end of the eleventh resistor, and a first end of the fifth switching tube is grounded; one end of the twelfth resistor is connected with the control end of the fifth switching tube, and the other end of the twelfth resistor is grounded; one end of the thirteenth resistor is connected with the control end of the fifth switching tube, and the other end of the thirteenth resistor is connected with the input end of the second communication device; a second end of the sixth switching tube is connected with a second end of the fourth switching tube, and a first end of the sixth switching tube is connected with an output end of the second communication device; one end of the fourteenth resistor is connected with the control end of the sixth switching tube, and the other end of the fourteenth resistor is connected with the first end of the sixth switching tube; one end of the fifteenth resistor is connected with the control end of the sixth switching tube, and the other end of the fifteenth resistor is connected with the second voltage source; and one end of the sixteenth resistor is connected with the second end of the fourth switching tube and the second end of the sixth switching tube respectively, and the other end of the sixteenth resistor is connected with the second input end of the first transmission circuit.
In some examples, the first receive sub-circuit comprises: one end of the seventeenth resistor is connected with a second voltage source, and the other end of the seventeenth resistor is connected with the second output end of the first transmission circuit; one end of the eighteenth resistor is connected with the second output end of the first transmission circuit, and the other end of the eighteenth resistor is connected with the input end of the second communication device; the anode of the first diode is connected with the input end of the second communication device, and the cathode of the second diode is connected with the second voltage source; and one end of the second capacitor is connected with the anode of the second diode, and the other end of the second capacitor is grounded.
In some examples, the first switch tube is a PNP type triode, and the second switch tube and the third switch tube are both NPN triodes, wherein the first end of the first switch tube is an emitter of the PNP type triode, the second end of the first switch tube is a collector of the PNP type triode, and the control end of the first switch tube is a base of the PNP type triode; the first end of the second switching tube is an emitting electrode of the NPN type triode, the second end of the second switching tube is a collecting electrode of the NPN type triode, and the control end of the second switching tube is a base electrode of the NPN type triode; the first end of the third switching tube is an emitting electrode of the NPN type triode, the second end of the third switching tube is a collecting electrode of the NPN type triode, and the control end of the third switching tube is a base electrode of the NPN type triode.
In some examples, the fourth switching tube is a PNP type triode, and the fifth switching tube and the sixth switching tube are both NPN triodes, wherein a first end of the fourth switching tube is an emitter of the PNP type triode, a second end of the fourth switching tube is a collector of the PNP type triode, and a control end of the fourth switching tube is a base of the PNP type triode; a first end of the fifth switching tube is an emitting electrode of the NPN type triode, a second end of the fifth switching tube is a collecting electrode of the NPN type triode, and a control end of the fifth switching tube is a base electrode of the NPN type triode; the first end of the sixth switching tube is an emitting electrode of the NPN type triode, the second end of the sixth switching tube is a collecting electrode of the NPN type triode, and the control end of the sixth switching tube is a base electrode of the NPN type triode.
In order to achieve the above object, the present invention further provides an electrical apparatus including the communication circuit as above.
According to the utility model discloses an electrical equipment converts communication device's output signal to mains operated signal through foretell communication circuit, realizes pushing away by force and draws the output, great reinforcing signal driving force, improved the interference killing feature.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which
Fig. 1 is a block diagram of a communication circuit according to an embodiment of the present invention;
fig. 2 is a block diagram of a communication circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first transmission circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second transmission circuit according to an embodiment of the present invention;
fig. 5 is a block diagram of an electrical apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The communication circuit and the electric appliance according to the embodiments of the present invention are described below with reference to the drawings.
Fig. 1 is a schematic diagram of a communication circuit according to an embodiment of the present invention. As shown in fig. 1, the communication circuit includes a first communication device 100, a second communication device 200, a first transmission circuit 300, and a second transmission circuit 400.
Referring to fig. 1, the output terminal TXD1 of the first communication device 100 is connected to the first input terminal 3011 of the first transmission circuit 300, the input terminal RXD1 of the first communication device 100 is connected to the first output terminal 3012 of the first transmission circuit 300, the output terminal TXD2 of the second communication device 200 is connected to the first input terminal 4011 of the second transmission circuit 400, the input terminal RXD2 of the second communication device 200 is connected to the first output terminal 4012 of the second transmission circuit 400, the second output terminal 3022 of the first transmission circuit 300 is connected to the second input terminal 4021 of the second transmission circuit 400, and the second input terminal 3021 of the first transmission circuit 300 is connected to the second output terminal 4022 of the second transmission circuit 400.
Specifically, referring to fig. 1, when the first communication device 100 sends a communication message to the second communication device 200, the output signal output from the output terminal TXD1 by the first communication device 100 is converted into a first power supply signal by the first transmission circuit 300 and transmitted to the second transmission circuit 400, and the second transmission circuit 400 transmits the first power supply signal to the second communication device 200. When the second communication device 200 sends a communication message to the first communication device 100, the output signal of the second communication device 200 from the output terminal TXD2 is converted into a second power supply signal by the second transmission circuit 400 and transmitted to the second transmission circuit 400, and the first transmission circuit 300 transmits the second power supply signal to the first communication device 100.
Therefore, the communication circuit converts the output signal of the first communication device 100 into the first power supply signal through the first transmission circuit 300 and provides the first power supply signal to the second communication device 200, and converts the output signal of the second communication device 200 into the second power supply signal through the second transmission circuit 400 and provides the second power supply signal to the first communication device 100, so that strong push-pull output is realized, the signal driving capability is greatly enhanced, and the anti-interference capability is improved.
In an example of the present invention, as shown in fig. 2, the first transmission circuit 300 includes: a first transmitting sub-circuit 310 and a first receiving sub-circuit 320. The input terminal of the first transmitting sub-circuit 310 is connected to the output terminal TXD1 of the first communication device 100, the output terminal of the first transmitting sub-circuit 310 is connected to the second input terminal 4021 of the second transmission circuit 400, the input terminal of the first receiving sub-circuit 320 is connected to the second output terminal 4022 of the second transmission circuit 400, and the output terminal of the first receiving sub-circuit 320 is connected to the input terminal RXD1 of the first communication device 100.
Referring to fig. 2, the second transmission circuit 400 includes: a second transmit sub-circuit 410 and a second receive sub-circuit 420. The input terminal of the second transmitting sub-circuit 410 is connected to the output terminal TXD2 of the second communication device 200, the output terminal of the second transmitting sub-circuit 410 is connected to the second input terminal 3021 of the first transmission circuit 300, the input terminal of the second receiving sub-circuit 420 is connected to the second output terminal 301 of the first transmission circuit 300, and the output terminal of the second receiving sub-circuit 420 is connected to the input terminal RXD2 of the second communication device.
In this embodiment, when the first communication device 100 sends a communication message to the second communication device 200, the output signal output by the first communication device 100 is input from the input terminal of the first transmitting sub-circuit 310, processed (i.e., converted into the first power supply signal) by the first transmitting sub-circuit 310, and then output from the output terminal of the first transmitting sub-circuit 310 to the second receiving sub-circuit 420, and transmitted to the second communication device 200 via the second receiving sub-circuit 420, so as to complete the transmission of the communication message. When the second communication device 200 sends the communication information to the first communication device 100, the output signal output by the second communication device 200 is input from the input terminal of the second sending sub-circuit 410, processed by the second sending sub-circuit 410 (i.e., converted into the second power supply signal), and then output from the output terminal of the second sending sub-circuit 410 to the first receiving sub-circuit 320, and transmitted to the first communication device 100 through the first receiving sub-circuit 320, thereby completing the transmission of the communication information.
It should be noted that the output terminal of the first transmitting sub-circuit 310 is the same as the second output terminal 3022 of the first transmission circuit 300, and the input terminal of the first receiving sub-circuit 320 is the same as the second input terminal 3012 of the first transmission circuit 300. The output terminal of the second transmitting sub-circuit 410 is the same as the second output terminal 4022 of the second transmission circuit 400, and the input terminal of the second receiving sub-circuit 420 is the same as the second input terminal 4021 of the second transmission circuit 400.
In an example of the present invention, as shown in fig. 3, the first transmitting sub-circuit 310 includes: the circuit comprises a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7. Wherein, a first end of the first switch tube Q1 is connected with a first voltage source V1, a second end of the first switch tube Q1 is connected with a second input terminal 4021 of the second transmission circuit 400, one end of the first resistor R1 is connected with a first voltage source V1, the other end of the first resistor R1 is connected with a control terminal of the first switch tube Q1, one end of the second resistor R2 is connected with a control terminal of the first switch tube Q1, a second end of the second switch tube Q2 is connected with the other end of the second resistor R2, a first end of the second switch tube Q2 is grounded, one end of the third resistor R3 is connected with a control terminal of the second switch tube Q2, the other end of the third resistor R3 is grounded, one end of the fourth resistor R4 is connected with a control terminal of the second switch tube Q2, the other end of the fourth resistor R4 is connected with an output terminal d1 of the first communication device 100, a second end of the third switch tube Q4624 is connected with a second end of the txq 599, and a second end of the txq 599 is connected with a second switch tube txq 1, one end of a fifth resistor R5 is connected to the control end of the third switching tube Q3, the other end of the fifth resistor R5 is connected to the first end of the third switching tube Q3, one end of a sixth resistor R6 is connected to the control end of the third switching tube Q3, the other end of the sixth resistor R6 is connected to the first voltage source V1, one end of a seventh resistor R7 is connected to the second end of the first switching tube Q1 and the second end of the third switching tube Q3, and the other end of the seventh resistor R7 is connected to the second input terminal 4021 of the second transmission circuit 400.
The first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 can adopt resistors with the types of 4.7K +/-5%, and the seventh resistor R7 can adopt resistors with the types of 47R +/-5%. The first switch tube Q1 is a PNP triode, the second switch tube Q2 and the third switch tube Q3 are NPN triodes, wherein the first end of the first switch tube Q1 is an emitter of the PNP triode, the second end of the first switch tube Q1 is a collector of the PNP triode, the control end of the first switch tube Q1 is a base of the PNP triode, the first end of the second switch tube Q2 is an emitter of the NPN triode, the second end of the second switch tube Q2 is a collector of the NPN triode, the control end of the second switch tube Q2 is a base of the NPN triode, the first end of the third switch tube Q3 is an emitter of the NPN triode, the second end of the third switch tube Q3 is a collector of the NPN triode, and the control end of the third switch tube Q3 is a base of the NPN triode.
Further, referring to fig. 3, the first receiving sub-circuit 320 includes: an eighth resistor R8, a ninth resistor R9, a first diode D1 and a first capacitor C1. One end of the eighth resistor R8 is connected to the first voltage source V1, and the other end of the eighth resistor R8 is connected to the second output terminal 4022 of the second transmission circuit 400; one end of the ninth resistor R9 is connected to the second output terminal 4022 of the second transmission circuit 400, and the other end of the ninth resistor R9 is connected to the input terminal RXD1 of the first communication device 100; the anode of the first diode D1 is connected to the input terminal RXD1 of the first communication device 100, and the cathode of the first diode D1 is connected to the first voltage source V1; one end of the first capacitor C1 is connected to the anode of the first diode D1, and the other end of the first capacitor C1 is grounded.
The eighth resistor R8 can be a resistor with the type of 4.7K +/-5%, the ninth resistor R9 can be a resistor with the type of 47R +/-5%, and the capacitance value of the first capacitor C1 can be 1 nF.
In an example of the present invention, as shown in fig. 4, the second transmitting sub-circuit 410 includes: a fourth switching tube Q4, a fifth switching tube Q5, a sixth switching tube Q6, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15 and a sixteenth resistor R16. Wherein, a first end of the fourth switching tube Q4 is connected with the second voltage source V2, one end of the tenth resistor R10 is connected with the second voltage source V2, the other end of the tenth resistor R10 is connected with the control end of the fourth switching tube Q4, one end of the eleventh resistor R11 is connected with the control end of the fourth switching tube Q4, a second end of the fifth switching tube Q5 is connected with the other end of the eleventh resistor R11, a first end of the fifth switching tube Q5 is grounded, one end of the twelfth resistor R12 is connected with the control end of the fifth switching tube Q5, the other end of the twelfth resistor R6329 is grounded, one end of the thirteenth resistor R13 is connected with the control end of the fifth switching tube Q5, the other end of the thirteenth resistor R13 is connected with the output end TXD2 of the second communication device 200, a second end of the sixth switching tube Q6 is connected with the second end of the fourth switching tube Q5, and the second end of the sixth switching tube Q2 is connected with the output end of the TXD 573200, one end of a fourteenth resistor R14 is connected to the control end of the sixth switching tube Q6, the other end of the fourteenth resistor R14 is connected to the first end of the sixth switching tube Q6, one end of the fifteenth resistor R15 is connected to the control end of the sixth switching tube Q6, the other end of the fifteenth resistor R15 is connected to the second voltage source V2, one end of the sixteenth resistor R16 is connected to the second end of the fourth switching tube Q4 and the second end of the sixth switching tube Q6, and the other end of the sixteenth resistor R16 is connected to the second input terminal 3021 of the first transmission circuit 300.
The tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14 and the fifteenth resistor R15 all adopt resistors with the type of 4.7K ± 5%, and the sixteenth resistor R16 adopts a resistor with the type of 47R ± 5%. A PNP triode is adopted as the fourth switching tube Q4, NPN triodes are adopted as the fifth switching tube Q5 and the sixth switching tube Q6, wherein the first end of the fourth switching tube Q4 is an emitter of the PNP triode, the second end of the fourth switching tube Q4 is a collector of the PNP triode, the control end of the fourth switching tube Q4 is a base of the PNP triode, the first end of the fifth switching tube Q5 is an emitter of the NPN triode, the second end of the fifth switching tube Q5 is a collector of the NPN triode, the control end of the fifth switching tube Q5 is a base of the NPN triode, the first end of the sixth switching tube Q6 is an emitter of the NPN triode, the second end of the sixth switching tube Q6 is a collector of the NPN triode, and the control end of the sixth switching tube Q6 is a base of the NPN triode.
Further, referring to fig. 4, the second receiving sub-circuit 420 includes: a seventeenth resistor R17, an eighteenth resistor R18, a second diode D2 and a second capacitor C2. One end of the seventeenth resistor R17 is connected to the second voltage source V2, and the other end of the seventeenth resistor R17 is connected to the second output terminal 301 of the first transmission circuit 300; one end of the eighteenth resistor R18 is connected to the second output terminal 301 of the first transmission circuit 300, and the other end of the eighteenth resistor R18 is connected to the input terminal RXD2 of the second communication device; the anode of the second diode D2 is connected to the input terminal RXD2 of the second communication device, and the cathode of the second diode D2 is connected to the second voltage source V2; one end of the second capacitor C2 is connected to the anode of the second diode D2, and the other end of the second capacitor C2 is grounded.
The seventeenth resistor R17 can adopt a 4.7K +/-5% type resistor, the eighteenth resistor R18 can adopt a 47R +/-5% type resistor, and the capacitance value of the second capacitor C2 can be 1 nF.
Specifically, referring to fig. 3 and 4, when the first communication device 100 transmits communication information to the second communication device 200, the output signal of the first communication device 100 may be high or low. When the output signal of the first communication device 100 is at a high level, the second switch Q2 and the first switch Q1 are both turned on, and the third switch Q3 is turned off, so that the second end of the first switch Q1 is connected to the first voltage source V1, that is, the voltage at the second end of the first switch Q1 is the voltage provided by the first voltage source V1, the output current capability is strong, the output impedance is low, and even if there is a stray signal or spatial electromagnetic interference, the coupling voltage is coupled to the communication line, and due to the low internal resistance characteristic, the coupling voltage is far lower than the high level output by the first communication device 100. When the output signal of the first communication device 100 is at a low level, the second switch Q2 and the first switch Q1 are both turned off, the third switch Q3 is turned on, and the first end of the third switch Q3 is pulled down to a low level because the third switch Q3 has a strong pull-down capability. Therefore, high and low level signals output by the first communication device 100 are converted into power supply signals, strong push-pull output is achieved, signal driving capability is greatly enhanced, anti-interference capability is improved, and compared with an RS485 module, the cost is lower.
Referring to fig. 3 and 4, when the second communication device 200 transmits communication information to the first communication device 100, the output signal of the second communication device 200 may be at a high level or a low level. When the output signal of the second communication device 200 is at a high level, the fifth switch Q5 and the fourth switch Q4 are both turned on, and the sixth switch Q6 is turned off, so that the second end of the fourth switch Q4 is connected to the second voltage source V2, that is, the voltage at the second end of the fourth switch Q4 is the voltage provided by the second voltage source V2, the output current capability is strong, the output impedance is low, even if there is a stray signal or spatial electromagnetic interference, the coupling voltage is coupled to the communication line, and due to the low internal resistance characteristic, the coupling voltage is much lower than the high level output by the second communication device 200. When the output signal of the second communication device 200 is at a low level, the fifth switch Q5 and the fourth switch Q4 are both turned off, the sixth switch Q6 is turned on, and the first terminal of the sixth switch Q6 is pulled down to a low level because the sixth switch Q6 has a strong pull-down capability. Therefore, high and low level signals output by the second communication device 200 are converted into power supply signals, strong push-pull output is achieved, signal driving capability is greatly enhanced, anti-interference capability is improved, and compared with an RS485 module, the cost is lower.
The utility model discloses communication circuit can be used to disturb the communication strong and far away from, for example with the communication of motor, solenoid valve, relay etc, this communication circuit realizes pushing away by force and draws output through converting the high low level into mains operated signal to great reinforcing signal driving ability has improved the interference killing feature, and is with low costs.
Further, the utility model provides an electrical equipment.
Fig. 5 is a block diagram of an electrical apparatus according to an embodiment of the present invention.
As shown in fig. 5, the electrical apparatus 1000 includes the communication circuit 10 as in the above embodiments.
The utility model discloses electrical equipment, through the communication circuit in the above-mentioned embodiment, can change the high low level of communication device output into mains operated signal, realize pushing away by force and draw the output to strengthen signal driving ability greatly, improved the interference killing feature of signal, and with low costs, have higher practical use.
In addition, other configurations and functions of the electrical apparatus of the embodiment of the present invention are known to those skilled in the art, and are not described herein for reducing redundancy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A communication circuit is characterized by comprising a first communication device, a second communication device, a first transmission circuit and a second transmission circuit, wherein the output end of the first communication device is connected with the first input end of the first transmission circuit, the input end of the first communication device is connected with the first output end of the first transmission circuit, the output end of the second communication device is connected with the first input end of the second transmission circuit, the input end of the second communication device is connected with the first output end of the second transmission circuit, the second output end of the first transmission circuit is connected with the second input end of the second transmission circuit, and the second input end of the first transmission circuit is connected with the second output end of the second transmission circuit;
the first transmission circuit is used for converting an output signal of the first communication device into a first power supply signal and transmitting the first power supply signal to the second communication device through the second transmission circuit, and the second transmission circuit is used for converting an output signal of the second communication device into a second power supply signal and transmitting the second power supply signal to the first communication device through the first transmission circuit.
2. The communication circuit of claim 1, wherein the first transmission circuit comprises:
the input end of the first transmitting sub-circuit is connected with the output end of the first communication device, and the output end of the first transmitting sub-circuit is connected with the second input end of the second transmission circuit;
and the input end of the first receiving sub-circuit is connected with the second output end of the second transmission circuit, and the output end of the first receiving sub-circuit is connected with the input end of the first communication device.
3. The communication circuit of claim 2, wherein the first transmit sub-circuit comprises:
a first end of the first switching tube is connected with a first voltage source, and a second end of the first switching tube is connected with a second input end of the second transmission circuit;
one end of the first resistor is connected with the first voltage source, and the other end of the first resistor is connected with the control end of the first switching tube;
one end of the second resistor is connected with the control end of the first switching tube;
a second end of the second switch tube is connected with the other end of the second resistor, and a first end of the second switch tube is grounded;
one end of the third resistor is connected with the control end of the second switching tube, and the other end of the third resistor is grounded;
one end of the fourth resistor is connected with the control end of the second switching tube, and the other end of the fourth resistor is connected with the output end of the first communication device;
a second end of the third switching tube is connected with a second end of the first switching tube, and a first end of the third switching tube is connected with an output end of the first communication device;
one end of the fifth resistor is connected with the control end of the third switching tube, and the other end of the fifth resistor is connected with the first end of the third switching tube;
one end of the sixth resistor is connected with the control end of the third switching tube, and the other end of the sixth resistor is connected with the first voltage source;
one end of the seventh resistor is connected with the second end of the first switching tube and the second end of the third switching tube respectively, and the other end of the seventh resistor is connected with the second input end of the second transmission circuit.
4. The communication circuit of claim 2, wherein the first receiving sub-circuit comprises:
one end of the eighth resistor is connected with the first voltage source, and the other end of the eighth resistor is connected with the second output end of the second transmission circuit;
one end of the ninth resistor is connected with the second output end of the second transmission circuit, and the other end of the ninth resistor is connected with the input end of the first communication device;
the anode of the first diode is connected with the input end of the first communication device, and the cathode of the first diode is connected with the first voltage source;
and one end of the first capacitor is connected with the anode of the first diode, and the other end of the first capacitor is grounded.
5. The communication circuit of claim 1, wherein the second transmission circuit comprises:
the input end of the second transmitting sub-circuit is connected with the output end of the second communication device, and the output end of the second transmitting sub-circuit is connected with the second input end of the first transmission circuit;
and the input end of the second receiving sub-circuit is connected with the second output end of the first transmission circuit, and the output end of the second receiving sub-circuit is connected with the input end of the second communication device.
6. The communication circuit of claim 5, wherein the second transmit sub-circuit comprises:
a first end of the fourth switching tube is connected with a second voltage source;
one end of the tenth resistor is connected with the second voltage source, and the other end of the tenth resistor is connected with the control end of the fourth switching tube;
one end of the eleventh resistor is connected with the control end of the fourth switching tube;
a second end of the fifth switching tube is connected with the other end of the eleventh resistor, and a first end of the fifth switching tube is grounded;
one end of the twelfth resistor is connected with the control end of the fifth switching tube, and the other end of the twelfth resistor is grounded;
one end of the thirteenth resistor is connected with the control end of the fifth switching tube, and the other end of the thirteenth resistor is connected with the output end of the second communication device;
a second end of the sixth switching tube is connected with a second end of the fourth switching tube, and a first end of the sixth switching tube is connected with an output end of the second communication device;
one end of the fourteenth resistor is connected with the control end of the sixth switching tube, and the other end of the fourteenth resistor is connected with the first end of the sixth switching tube;
one end of the fifteenth resistor is connected with the control end of the sixth switching tube, and the other end of the fifteenth resistor is connected with the second voltage source;
and one end of the sixteenth resistor is connected with the second end of the fourth switching tube and the second end of the sixth switching tube respectively, and the other end of the sixteenth resistor is connected with the second input end of the first transmission circuit.
7. The communication circuit of claim 5, wherein the second receiving sub-circuit comprises:
one end of the seventeenth resistor is connected with a second voltage source, and the other end of the seventeenth resistor is connected with the second output end of the first transmission circuit;
one end of the eighteenth resistor is connected with the second output end of the first transmission circuit, and the other end of the eighteenth resistor is connected with the input end of the second communication device;
the anode of the second diode is connected with the input end of the second communication device, and the cathode of the second diode is connected with the second voltage source;
and one end of the second capacitor is connected with the anode of the second diode, and the other end of the second capacitor is grounded.
8. The communication circuit as claimed in claim 3, wherein the first switch tube is a PNP transistor, and the second switch tube and the third switch tube are NPN transistors, wherein,
the first end of the first switch tube is an emitting electrode of the PNP type triode, the second end of the first switch tube is a collecting electrode of the PNP type triode, and the control end of the first switch tube is a base electrode of the PNP type triode;
the first end of the second switching tube is an emitting electrode of the NPN type triode, the second end of the second switching tube is a collecting electrode of the NPN type triode, and the control end of the second switching tube is a base electrode of the NPN type triode;
the first end of the third switching tube is an emitting electrode of the NPN type triode, the second end of the third switching tube is a collecting electrode of the NPN type triode, and the control end of the third switching tube is a base electrode of the NPN type triode.
9. The communication circuit as claimed in claim 6, wherein the fourth switch tube is a PNP transistor, and the fifth switch tube and the sixth switch tube are NPN transistors, wherein,
the first end of the fourth switching tube is an emitting electrode of the PNP type triode, the second end of the fourth switching tube is a collecting electrode of the PNP type triode, and the control end of the fourth switching tube is a base electrode of the PNP type triode;
a first end of the fifth switching tube is an emitting electrode of the NPN type triode, a second end of the fifth switching tube is a collecting electrode of the NPN type triode, and a control end of the fifth switching tube is a base electrode of the NPN type triode;
the first end of the sixth switching tube is an emitting electrode of the NPN type triode, the second end of the sixth switching tube is a collecting electrode of the NPN type triode, and the control end of the sixth switching tube is a base electrode of the NPN type triode.
10. An electrical appliance, characterized in that it comprises a communication circuit according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921887619.3U CN211018800U (en) | 2019-11-04 | 2019-11-04 | Communication circuit and electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921887619.3U CN211018800U (en) | 2019-11-04 | 2019-11-04 | Communication circuit and electrical equipment |
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| CN211018800U true CN211018800U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113678A (en) * | 2021-03-30 | 2021-07-13 | 东莞新能安科技有限公司 | Single-wire communication circuit, battery management system, battery pack and electric device |
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2019
- 2019-11-04 CN CN201921887619.3U patent/CN211018800U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113678A (en) * | 2021-03-30 | 2021-07-13 | 东莞新能安科技有限公司 | Single-wire communication circuit, battery management system, battery pack and electric device |
| EP4071041A1 (en) * | 2021-03-30 | 2022-10-12 | Dongguan Poweramp Technology Limited | Single-line communication circuit and battery management system, battery pack, and electrical apparatus |
| CN113113678B (en) * | 2021-03-30 | 2023-04-18 | 东莞新能安科技有限公司 | Single-wire communication circuit, battery management system, battery pack and electric device |
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