CN210578540U - Single item communication device based on power line - Google Patents
Single item communication device based on power line Download PDFInfo
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- CN210578540U CN210578540U CN201922089114.9U CN201922089114U CN210578540U CN 210578540 U CN210578540 U CN 210578540U CN 201922089114 U CN201922089114 U CN 201922089114U CN 210578540 U CN210578540 U CN 210578540U
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Abstract
In order to solve the problem that the communication device in the prior art is high in cost, the present disclosure provides a single communication device based on a power line, so as to reduce the cost of the device. The device comprises a master device control module, a power supply circuit, a rectifying circuit, an input voltage conversion circuit and slave devices; the power supply circuit is connected with the main equipment control module and used for receiving the control signal output by the main equipment control module and switching the power supply polarity according to the control signal; the rectification circuit is respectively electrically connected with the power supply circuit and the slave device and is used for converting the electric energy output by the power supply circuit into direct current electric energy and transmitting the direct current electric energy to the slave device; the input voltage conversion circuit is electrically connected with the power supply circuit and the slave device respectively and is used for converting the level signal output by the power supply circuit into a low level signal which can be received by the slave device. According to the technical scheme, power supply and communication of the master equipment control module to the slave equipment can be achieved only through power line connection, implementation is simple, and meanwhile cost is reduced.
Description
Technical Field
The present disclosure relates to a communication device, and more particularly, to a single item communication device based on a power line.
Background
Various communication modes existing in the market at present, such as wireless wifi, Bluetooth, infrared, or wired UART, CAN and the like, need additional wireless communication modules or support of additional communication cables, and in some scenes only one-way and low-speed communication, the existing methods have high cost and are complex to implement
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above technical problems, the present disclosure provides a power line-based single item communication apparatus, which reduces the cost of the apparatus.
In order to achieve the above object, the power line-based single communication apparatus of the present disclosure includes a master device control module, a power supply circuit, a rectification circuit, an input voltage conversion circuit, and a slave device;
the power supply circuit is connected with the main equipment control module and used for receiving the control signal output by the main equipment control module and switching the power supply polarity according to the control signal;
the rectification circuit is respectively electrically connected with the power supply circuit and the slave device and is used for converting the electric energy output by the power supply circuit into direct current electric energy and transmitting the direct current electric energy to the slave device;
the input voltage conversion circuit is electrically connected with the power supply circuit and the slave device respectively and is used for converting the level signal output by the power supply circuit into a low level signal which can be received by the slave device.
Optionally, the power supply circuit includes a VCC terminal, a GND terminal, a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, and a fourth NMOS transistor;
the VCC end, the first NMOS tube, the third NMOS tube and the GND end are sequentially connected in series;
the VCC end, the second NMOS tube, the fourth NMOS tube and the GND end are sequentially connected in series;
the common connecting end of the first NMOS tube and the third NMOS tube and the common connecting end of the second NMOS tube and the fourth NMOS tube are used as the output end of the power supply circuit and are electrically connected with the rectifying circuit through power lines;
the master device control module comprises four control pins, and the four control pins are respectively connected with the grid electrode of the first NMOS tube, the grid electrode of the second NMOS tube, the grid electrode of the third NMOS tube and the grid electrode of the fourth NMOS tube in a one-to-one correspondence mode.
Optionally, the rectifier circuit includes a rectifier bridge;
the rectifier bridge comprises a first input pin, a second input pin, a negative output pin and a positive output pin;
the first input pin and the second input pin are used as input ends of the rectifying circuit and are electrically connected with the power supply circuit through power lines;
the negative output pin is connected with a power supply pin of the slave device;
the positive output pin is connected with a ground pin of the slave device.
Optionally, a capacitor is connected between the negative output pin and the positive output pin.
Optionally, the input voltage conversion circuit includes a first resistor, a second resistor, and a triode;
one end of the first resistor is connected with a power supply end of the slave device, and the other end of the first resistor is connected with a base electrode of the triode;
one end of the second resistor is connected with the power supply circuit through one of the power lines, and the other end of the second resistor is connected with the collector of the triode;
the emitter of the triode is connected with the grounding end of the slave equipment, and the collector of the triode is connected with the signal input end of the slave equipment.
In the technical scheme of the disclosure, a master device control module and a power supply circuit are a master control part, and a rectifying circuit, an input voltage conversion circuit and a slave device are slave device receiving parts; the host control part and the slave equipment receiving part are connected only through a power line, and power supply and communication (one-way communication) of the master equipment control module to the slave equipment can be realized without a communication cable or a wireless communication module; low cost and simple implementation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic connection diagram of a single item of communication equipment in an exemplary embodiment of the present disclosure;
fig. 2 is a circuit connection diagram of a single item communication device in an exemplary embodiment of the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 and 2, the single item communication apparatus based on the power line includes a master device control module 1, a power supply circuit 2, a rectification circuit 3, an input voltage conversion circuit 4 and a slave device 3;
the power supply circuit 2 is connected with the main equipment control module 1 and used for receiving the control signal output by the main equipment control module 1 and switching the power supply polarity according to the control signal;
the rectifying circuit 3 is respectively electrically connected with the power supply circuit 2 and the slave device 3, and is used for converting the electric energy output by the power supply circuit 2 into direct current electric energy and transmitting the direct current electric energy to the slave device 3;
the input voltage conversion circuit 4 is electrically connected to the power supply circuit 2 and the slave device 3, respectively, and is configured to convert a level signal output by the power supply circuit 2 into a low level signal that can be received by the slave device 3.
In the technical scheme disclosed in this embodiment, the power supply circuit 2 receives the control of the main device control module 1, and switches the power supply polarity; the rectifying circuit 3 converts the electric energy output by the power supply circuit 2 into direct current electric energy, so that the power supply circuit 2 can supply power to the slave device 3, and the input voltage conversion circuit 4 converts the level signal output by the power supply circuit 2 into a low level signal which can be received by the slave device 3, so that the power supply circuit 2 can communicate with the slave device 3.
In the technical scheme disclosed in the embodiment, a master device control module 1 and a power supply circuit 2 are a master control part, and a rectifying circuit 3, an input voltage conversion circuit 4 and a slave device 3 are slave device receiving parts; the host control part and the slave equipment receiving part are electrically connected through a power line without a communication cable or a wireless communication module, so that power supply and communication (one-way communication) of the master equipment control module 1 to the slave equipment 3 can be realized; low cost and simple implementation.
As an alternative embodiment, as shown in fig. 1 and fig. 2, the power supply circuit 2 includes a VCC power supply terminal, a GND ground terminal, a first NMOS transistor Q5, a second NMOS transistor Q6, a third NMOS transistor Q7, and a fourth NMOS transistor Q8;
the VCC power supply end, the first NMOS tube Q5, the third NMOS tube Q7 and the GND grounding end are sequentially connected in series;
the VCC power supply end, the second NMOS tube Q6, the fourth NMOS tube Q8 and the GND grounding end are sequentially connected in series;
the common connection end of the first NMOS transistor Q5 and the third NMOS transistor Q7 and the common connection end of the second NMOS transistor Q6 and the fourth NMOS transistor Q8 are used as the output end of the power supply circuit 2 and are electrically connected with the rectifying circuit 3 through a power line S;
the master device control module 1 includes four control pins, and the four control pins are respectively connected with the gate of the first NMOS transistor Q5, the gate of the second NMOS transistor Q6, the gate of the third NMOS transistor Q7, and the gate of the fourth NMOS transistor Q8 in a one-to-one correspondence.
As shown in fig. 2, the VCC power supply terminal, the first NMOS transistor Q5, the third NMOS transistor Q7, and the GND ground terminal are sequentially connected in series; namely, the VCC power supply terminal is connected to the D-pole of the first NMOS transistor Q5, the S-pole of the first NMOS transistor Q5 is connected to the D-pole of the third NMOS transistor Q7, and the S-pole of the third NMOS transistor Q7 is connected to the GND ground terminal. The VCC power supply end, the second NMOS tube Q6, the fourth NMOS tube Q8 and the GND grounding end are sequentially connected in series; namely, the VCC power supply terminal is connected to the D-pole of the second NMOS transistor Q6, the S-pole of the second NMOS transistor Q6 is connected to the D-pole of the fourth NMOS transistor Q8, and the S-pole of the fourth NMOS transistor Q8 is connected to the GND ground terminal. In this context, the G-pole, i.e., gate, the S-pole, i.e., source, the D-pole, i.e., drain,
as shown in fig. 2, the master device control module 1 includes four control pins; respectively comprises a pin S1, a pin S2, a pin S3 and a pin S4; the pin S1 is connected to the gate of the first NMOS transistor Q5; the pin S2 is connected with the grid of the second NMOS tube Q6; the pin S3 is connected with the gate of the third NMOS transistor Q7; the pin S4 is connected with the gate of the fourth NMOS transistor Q8;
the main equipment control module 1 controls the third NMOS transistor Q6 and the third NMOS transistor Q7 to be switched on, and the third NMOS transistor Q5 and the third NMOS transistor Q8 to be switched off; or, the third NMOS transistor Q5 and the third NMOS transistor Q8 are controlled to be turned on, and the third NMOS transistor Q6 and the third NMOS transistor Q7 are controlled to be turned off; the switching of the power supply polarities of the D pole of the third NMOS tube Q5 and the D pole of the third NMOS tube Q6 is realized.
As an alternative embodiment, as shown in fig. 2, the rectifier circuit 3 includes a rectifier bridge BD 1;
the rectifier bridge comprises a first input pin P1, a second input pin P2, a negative output pin P3 and a positive output pin P4;
the first input pin P1 and the second input pin P2 are used as input ends of the rectifying circuit 3 and are electrically connected with the power supply circuit 2 through a power line S;
the negative output pin P3 is connected to the power supply pin V1 of the slave device 3;
the positive output pin P4 is connected to the ground pin G1 of the slave 3.
The function of converting the electric energy output by the power supply circuit 2 into direct current electric energy is realized through the rectifier bridge.
As an alternative embodiment, as shown in fig. 2, a capacitor C5 is connected between the negative output pin P3 and the positive output pin P4; capacitor C5 is used for filtering and the power supply from device 3 is taken across capacitor C5.
As an alternative embodiment, as shown in fig. 2 and fig. 2, the input voltage conversion circuit 4 includes a first resistor R16, a second resistor R17, and a transistor Q9;
one end of the first resistor R16 is connected with a power supply end of the slave device 3, and the other end of the first resistor R16 is connected with a base electrode of the triode Q9;
one end of the second resistor R17 is connected with the power supply circuit 2 through one of the power lines S, and the other end of the second resistor R17 is connected with the collector of the triode Q9; it is understood that the power line is the same as the power line in the foregoing; in particular, one end of the second resistor R17 may be disposed at the second input pin P2 of the rectifier bridge BD1 to implement connection of the power supply circuit through one of the power lines.
The emitter of the transistor Q9 is connected to the ground of the slave device 3, and the collector of the transistor Q9 is connected to the signal input terminal of the slave device 3.
Here, the VDD power supply of the slave device 3, which is referred to as the power supply terminal of the slave device 3, may be connected to the power supply pin V1 of the slave device, may be connected to the positive output pin P4 of the rectifier bridge, and the like; here, the ground reference SGND of the slave device 3, which is referred to as the ground terminal of the slave device 3, may be connected to the ground pin G1 of the slave device, may be connected to the negative output pin P3 of the rectifier bridge, and the like.
When the end of R17 away from transistor Q9 is high, transistor Q9 is on and receives a low signal from the signal input of device 3; when the end of R17 remote from transistor Q9 is high, transistor Q9 is off and receives a high signal from the signal input of device 3; and then, the signal input end of the slave device 3 can receive signals only by controlling the level of the end, away from the transistor Q9, of the R17. It can be appreciated that VDD to which the first resistor R16 is connected in fig. 2 is a high level signal that can be received from the GPIO pin of the device 3, and SGND to which the transistor Q9 is connected is a low level signal that can be received from the GPIO pin of the device 3.
The present embodiment takes the circuit in fig. 2 as an example for further explanation.
As shown in fig. 1 and 2, in normal operation, it is expected that a high level is received from the GPIO of the device 3 (IC). The master device control module 1 controls Q6 and Q7 to BE turned on, and Q5 and Q8 to BE turned off, so that when the power reaches the slave device end, a point P1 of the rectifier bridge is a power positive pole, a point P2 is a power negative pole, at this time, a diode a and a diode C in the rectifier bridge are turned on, and a diode B and a diode D are turned off, so that at this time, P2-P3 is approximately equal to-0.7V, so that a BE junction corresponding to the transistor Q9 is reversely biased, so that the transistor Q9 is turned off, and at this time, the level received by the slave device 3(IC) is high.
When the master device control module 1 needs to pull the level received by the GPIO of the slave device 3 (IC): the master device control module 1 switches the control logic to turn on Q5 and Q8, and turn off Q6 and Q7, so that when the power reaches the slave device 3, point P1 of the rectifier bridge is the negative pole of the power, point P2 is the positive pole of the power, at this time, diodes a and C are turned off, and diodes B and D are turned on in the rectifier bridge, so that at this time, P2-P3 ≈ VCC, the BE junction of the transistor Q9 is biased positively, the transistor Q9 is turned on, and at this time, the level received by the terminal IC is low.
In summary, the master device control module 1 switches the polarity, and the slave device 3 can correspondingly receive the high and low level signals while maintaining the power supply process, so that the receiving end can receive the control command as long as the baud rate of the communication is defined and the sampling is timed between the master device and the slave device 3, thereby realizing the communication from the master device to the slave device 3.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, 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 implicitly indicating the 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 application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (5)
1. The single communication device based on the power line is characterized by comprising a master equipment control module, a power supply circuit, a rectifying circuit, an input voltage conversion circuit and slave equipment;
the power supply circuit is connected with the main equipment control module and used for receiving the control signal output by the main equipment control module and switching the power supply polarity according to the control signal;
the rectification circuit is respectively electrically connected with the power supply circuit and the slave device and is used for converting the electric energy output by the power supply circuit into direct current electric energy and transmitting the direct current electric energy to the slave device;
the input voltage conversion circuit is electrically connected with the power supply circuit and the slave device respectively and is used for converting the level signal output by the power supply circuit into a low level signal which can be received by the slave device.
2. The apparatus of claim 1, wherein the power supply circuit comprises a VCC terminal, a GND terminal, a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, and a fourth NMOS transistor;
the VCC end, the first NMOS tube, the third NMOS tube and the GND end are sequentially connected in series;
the VCC end, the second NMOS tube, the fourth NMOS tube and the GND end are sequentially connected in series;
the common connecting end of the first NMOS tube and the third NMOS tube and the common connecting end of the second NMOS tube and the fourth NMOS tube are used as the output end of the power supply circuit and are electrically connected with the rectifying circuit through power lines;
the master device control module comprises four control pins, and the four control pins are respectively connected with the grid electrode of the first NMOS tube, the grid electrode of the second NMOS tube, the grid electrode of the third NMOS tube and the grid electrode of the fourth NMOS tube in a one-to-one correspondence mode.
3. The apparatus of claim 1, wherein the rectification circuit comprises a rectifier bridge;
the rectifier bridge comprises a first input pin, a second input pin, a negative output pin and a positive output pin;
the first input pin and the second input pin are used as input ends of the rectifying circuit and are electrically connected with the power supply circuit through power lines;
the negative output pin is connected with a power supply pin of the slave device;
the positive output pin is connected with a ground pin of the slave device.
4. The apparatus of claim 3, wherein a capacitor is connected between the negative output pin and the positive output pin.
5. The apparatus of claim 1, wherein the input voltage conversion circuit comprises a first resistor, a second resistor, and a transistor;
one end of the first resistor is connected with a power supply end of the slave device, and the other end of the first resistor is connected with a base electrode of the triode;
one end of the second resistor is connected with the power supply circuit through one of the power lines, and the other end of the second resistor is connected with the collector of the triode;
the emitter of the triode is connected with the grounding end of the slave equipment, and the collector of the triode is connected with the signal input end of the slave equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922089114.9U CN210578540U (en) | 2019-11-28 | 2019-11-28 | Single item communication device based on power line |
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| CN201922089114.9U CN210578540U (en) | 2019-11-28 | 2019-11-28 | Single item communication device based on power line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830083A (en) * | 2019-11-28 | 2020-02-21 | 厦门亿联网络技术股份有限公司 | Single item communication device based on power line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830083A (en) * | 2019-11-28 | 2020-02-21 | 厦门亿联网络技术股份有限公司 | Single item communication device based on power line |
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