CN213937433U - Electronic device and two-wire power supply communication system - Google Patents

Abstract

The application provides an electronic device and a two-wire power supply communication system, wherein the first electronic device comprises a power supply, a first control circuit, a first branch circuit and a second branch circuit, the first branch circuit and the second branch circuit are connected in parallel and are connected between the power supply and a first terminal, and a second terminal is connected with the ground of the power supply; the first control circuit is capable of controlling the first branch and/or the second branch to communicate the power source and the first terminal to cause the first terminal to alternately output a first level and a second level, the alternately output first level and second level being used for communication with the second electronic device. According to the scheme, the first electronic equipment and one or more second electronic equipment are communicated through the two-wire circuit, so that the cost of the equipment is greatly reduced, and the maintenance efficiency of the equipment is improved.

Description

Electronic device and two-wire power supply communication system

Technical Field

The present application relates to the field of electronic devices, and in particular, to an electronic device and a two-wire power supply communication system.

Background

As home appliances become more complex, a plurality of circuit boards are installed in one appliance, and the circuit boards may be installed at different positions, and the circuit boards communicate with each other through cables. In the prior art, signals are transmitted and received between two circuit boards through two signal lines. If the number of the circuit boards needing communication is increased or the distance between the two boards is far, the number and the length of the communication flat cables are increased in multiples, so that the flat cable cost is increased in multiples, the flat cables are distributed in a messy manner, the structural space utilization rate of a product is low, the size of the product is large, the reliability of the operation of the product is poor, the product is difficult to maintain, and the like. Therefore, how two devices communicate through a two-wire circuit is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

The present application is directed to an electronic device and a two-wire power supply communication system, and aims to enable a first electronic device to communicate with one or more second electronic devices through a two-wire circuit, so as to greatly reduce the cost of the device and improve the maintenance efficiency of the device.

In a first aspect, the present application provides a first electronic device comprising a first terminal and a second terminal for connecting to one or more second electronic devices;

the first electronic device comprises a power supply, a first control circuit, a first branch circuit and a second branch circuit, wherein the first branch circuit and the second branch circuit are connected in parallel and are connected between the power supply and a first terminal, and the second terminal is connected with the ground of the power supply;

the first control circuit is capable of controlling the first branch and/or the second branch to communicate the power source and the first terminal to cause the first terminal to alternately output a first level and a second level, the alternately output first level and second level being used for communication with the second electronic device.

In a second aspect, the present application further provides a second electronic device, including a third terminal for connecting to a first terminal of a first electronic device and a fourth terminal for connecting to a second terminal of the first electronic device; the second electronic device comprises a filter circuit and a second control circuit; the filter circuit is connected between the third terminal and the second control circuit;

the second control circuit extracts, through the filter circuit, alternating first and second levels of the third terminal input, according to which the first device communicates.

In a third aspect, the present application further provides a two-wire power supply communication system, including:

a first electronic device; and

a second electronic device;

the first electronic device is used for supplying power to a second electronic device, and the first electronic device can also communicate with the second electronic device.

The application provides an electronic device and a two-wire power supply communication system, wherein a first electronic device comprises a first terminal and a second terminal, and the first terminal and the second terminal are used for connecting one or more second electronic devices; the first electronic equipment comprises a power supply, a first control circuit, a first branch circuit and a second branch circuit, wherein the first branch circuit and the second branch circuit are connected in parallel and are connected between the power supply and a first terminal, and a second terminal is connected with the ground of the power supply; the first control circuit can control the first branch and/or the second branch to communicate the power source and the first terminal to cause the first terminal to alternately output a first level and a second level, the alternately output first level and second level being used for communication with a second electronic device. According to the scheme, the first electronic equipment and one or more second electronic equipment are communicated through the two-wire circuit, so that the cost of the equipment is greatly reduced, and the maintenance efficiency of the equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a circuit schematic diagram of an implementation manner of a first electronic device according to an embodiment of the present application;

fig. 2 is a circuit schematic diagram of another implementation manner of a first electronic device according to an embodiment of the present application;

fig. 3 is a circuit schematic diagram of an implementation manner of a second electronic device according to an embodiment of the present application;

fig. 4 is a circuit schematic diagram of another implementation manner of a second electronic device provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of a two-wire power supply communication system according to an embodiment of the present application.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a circuit schematic diagram of an embodiment of a first electronic device according to an embodiment of the present disclosure.

As shown in fig. 1, the first electronic device 100 is shown to include a first terminal 101 and a second terminal 102.

Wherein the first terminal 101 and the second terminal 102 are used for connecting one or more second electronic devices 200.

Illustratively, the first terminal 101 and the second terminal 102 may be conductive electrodes. Such as a copper sheet.

In some embodiments, the first electronic device 100 and the second electronic device 200 may be circuit boards, although the first electronic device 100 and the second electronic device 200 may also be other devices.

In some embodiments, as shown in fig. 1, the first electronic device 100 includes a power supply VCC, a first control circuit 103, a first branch 104, and a second branch 105. The first branch 104 and the second branch 105 are connected in parallel and are connected between the power source VCC and the first terminal 101, and the second terminal 102 is connected to the ground of the power source VCC.

In some embodiments, the first control circuit 103 can control the first branch 104 and/or the second branch 105 to connect the power supply VCC to the first terminal 101, so that the first terminal 101 alternately outputs a first level and a second level, which are alternately output for communication with the second electronic device 200.

Illustratively, when the first control circuit 103 controls the first branch 104 to be disconnected, the second branch 105 connects the power source VCC to the first terminal 101, and the first terminal 101 outputs a second level; when the first control circuit 103 controls the first branch 104 to be connected, the first branch 104 connects the power VCC to the first terminal 101, and the first terminal 101 outputs the first level. The first control circuit 103 can accurately control the connection or disconnection of the first branch 104, and further accurately control the first terminal 101 to output the first level or the second level.

Note that the first level is higher than the second level.

In some embodiments, the first control circuit 103 may be a micro control unit, which may be a single chip, or may be other devices.

In some embodiments, as shown in fig. 2, the first branch 104 includes a switch circuit 1041, the switch circuit 1041 is controlled to be connected and disconnected by the first control circuit 103, when the switch circuit 1041 is connected, the power VCC outputs a first level to the first terminal 101 through the connected first branch 104; when the switch circuit 1041 is turned off, the power supply VCC outputs the second level to the first terminal 101 through the second branch 105. The first control circuit 103 can alternately control the switching circuit 1041 to be turned on and off so that the first terminal 101 alternately outputs the first level and the second level. The communication with the second electronic device 200 is performed by alternately outputting the first level and the second level.

In some embodiments, the switch circuit 104 includes a first controlled switch connected between the power source VCC and the first terminal 104, and the controlled terminal is connected to the first control circuit 103, so that the first control circuit 103 is controlled to be connected or disconnected.

Illustratively, the first control circuit 103 controls the first controlled switch to be connected so that the first controlled switch is connected to the power source VCC and the first terminal 101, and the first terminal 101 outputs a first level; the first control circuit 103 controls the first controlled switch to be turned off, so that the second branch 105 is connected to the power source VCC and the first terminal 101, and the first terminal 101 outputs the second level. The first control circuit 103 controls the first controlled switch to be turned on or off, so that the first terminal 101 can be accurately controlled to output the first level or the second level.

Illustratively, the first controlled switch comprises a MOS transistor and/or a triode.

In some embodiments, the pressure drop of the second leg 105 is greater than the pressure drop when the first leg 104 is in communication.

Illustratively, the second branch 105 includes a voltage reduction circuit such that a first voltage flowing through the first branch 104 is higher than a second voltage flowing through the second branch 105. For another example, the first branch 104 includes a first voltage-dropping circuit, the second branch 105 includes a second voltage-dropping circuit, and the voltage drop of the second voltage-dropping circuit is greater than that of the first voltage-dropping circuit, so that the first voltage flowing through the first branch 104 is higher than the second voltage flowing through the second branch 105.

In some embodiments, the second branch 105 comprises a diode and/or a resistor, the anode of the diode is connected to the power source VCC, and the cathode is connected to the first terminal 101.

Exemplary diodes include silicon, schottky, and germanium diodes, among others.

It should be noted that the second branch 105 may include a diode and/or a resistor, and may also include a plurality of diodes and/or resistors, and the plurality of diodes and/or resistors are connected in series between the power source VCC and the first terminal 101 for the purpose of voltage reduction.

In some embodiments, as shown in fig. 1 or fig. 2, the power source VCC outputs a first voltage to the first terminal 101 by turning on the first branch 104, or outputs a second voltage to the first terminal 101 through the second branch 105, and the first voltage or the second voltage can supply power to the second electronic device 200. Wherein the first voltage is greater than the second voltage.

In other embodiments, the first branch 104 outputs the first voltage to the first terminal 101 in parallel with the second branch 105 by turning on the first branch 104. Illustratively, when the first control circuit 103 controls the first branch 104 to connect the power VCC with the first terminal 101, the power VCC outputs a first voltage to the first terminal 101 through the first branch 104, so that the first voltage output by the first terminal 101 can power the second electronic device 200; when the first control circuit 103 controls the first branch 104 to disconnect the power VCC from the first terminal 101, the power VCC outputs a second voltage to the first terminal 101 through the second branch 105, so that the second voltage output by the first terminal 101 can supply power to the second electronic device 200.

In some embodiments, as shown in fig. 2, the first branch 104 includes a first resistor R1, one end of the first resistor R1 is connected to the power source VCC, and the other end is connected to one end of the switch circuit 1041. The stability of the switch circuit 1041 can be enhanced by the first resistor R1.

In some embodiments, the first electronic device 100 includes a second resistor R2, the second resistor R2 being connected between the first control circuit 103 and the first branch 104. The first control circuit 103 is prevented from being damaged by the second resistor R2, and the safety of the device is improved.

In the first electronic device according to the above embodiment, the first control circuit can control the first branch and/or the second branch to connect the power supply and the first terminal, so that the first terminal alternately outputs the first level and the second level, and the alternately output first level and second level are used for communication with the second electronic device. According to the scheme, the first electronic equipment and one or more second electronic equipment are communicated through the two-wire circuit, so that the cost of the equipment is greatly reduced, and the maintenance efficiency of the equipment is improved.

Referring to fig. 3, fig. 3 is a circuit schematic diagram of an implementation manner of a second electronic device according to an embodiment of the present application.

As shown in fig. 3, the second electronic device 200 includes a third terminal 201 and a fourth terminal 202.

The third terminal 201 is used for connecting the first terminal 101 of the first electronic device 100, and the fourth terminal 202 is used for connecting the second terminal 102 of the first electronic device 100.

Illustratively, the third terminal 201 and the fourth terminal 202 may be conductive electrodes. Such as a copper sheet.

In some embodiments, as shown in fig. 3, the second electronic device 200 includes a filter circuit 203 and a second control circuit 204.

The filter circuit 203 is connected between the third terminal 201 and the second control circuit 204, and the filter circuit 203 is also connected to the fourth terminal 202 (ground).

In some embodiments, the second control circuit 204 receives alternating first and second levels from the filter circuit 203, which are extracted by the filter circuit 203, and communicates with the first electronic device 100 according to the alternating first and second levels. In some embodiments, the second control circuit 204 may be a micro-control unit, which may be a single chip, or may be other devices.

In some embodiments, the filter circuit 203 includes an RC high pass filter, which filters the power signal inputted from the third terminal 201 as a direct current, extracts the high frequency communication signal with the first level and the second level alternately, and transmits the extracted high frequency communication signal with the first level and the second level to the second control circuit 204, so that the second control circuit 204 communicates with the first electronic device 100 according to the high frequency communication signal with the first level and the second level.

In some embodiments, as shown in fig. 4, the RC high pass filter includes a capacitor C1 and a third resistor R3, and the capacitor C1 and the third resistor R3 are connected in series between the third terminal 201 and the fourth segment 202.

In some embodiments, as shown in fig. 4, the second electronic device 200 includes a signal adjusting circuit 205, the signal adjusting circuit 205 is connected between the filter circuit 203 and the second control circuit 204, and one end of the signal adjusting circuit 205 is further connected to the fourth terminal 202.

Illustratively, the signal adjusting circuit 205 is configured to adjust the alternating first and second levels to a digital signal, such that the second control circuit 205 communicates with the first electronic device 100 according to the digital signal.

In some embodiments, the signal conditioning circuit 205 includes a controlled switching tube 2051, the controlled switching tube 2051 being connected between the third terminal 201 and the fourth terminal 202.

For example, when the controlled switch tube 2051 is controlled to be turned on by the filter circuit 203, the signal adjusting circuit 205 outputs a low level to the second control circuit 204, and when the controlled switch tube 2051 is controlled to be turned off by the filter circuit 203, the signal adjusting circuit 205 outputs a high level to the second control circuit 204.

In some embodiments, the controlled switch tube 2051 includes any one of a transistor, a MOS transistor, a comparator, and a schmitt trigger, and of course, the controlled switch tube 2051 may also include other elements, which is not specifically limited in this application.

In some embodiments, the signal conditioning circuit 205 further includes a fourth resistor R4, the fourth resistor R4 is connected between the power supply stabilizing circuit 206 and the controlled switch tube 2051, and the fourth resistor R4 can output a high level and a low level with the controlled switch tube 2051.

In some embodiments, as shown in FIG. 4, the second electronic device 200 includes a power supply regulation circuit 206, the power supply regulation circuit 206 being connected between the third terminal 201 and the second control circuit 204.

Illustratively, the power supply voltage stabilizing circuit 206 is configured to stabilize the power flowing through the third terminal 201 and supply the stabilized power to the second control circuit 204. The supply voltage to the second control circuit 204 is made more stable by the power supply stabilizing circuit 206.

In some embodiments, the power supply voltage stabilizing circuit 206 may be an LDO low dropout linear regulator. In other embodiments, the power supply voltage regulator circuit 206 may also be a DC-DC switching power supply.

In some embodiments, the power supply voltage stabilizing circuit 206 may further include an energy storage capacitor for storing the electrical energy output from the third terminal 201.

In some embodiments, the first control circuit 103 controls the first branch 104 to be connected or disconnected, so that the first terminal 101 outputs a first voltage, a second voltage, a first level and a second level, the third terminal 201 receives and outputs the first voltage and the second voltage to the power supply stabilizing circuit 206, the power supply stabilizing circuit 206 stabilizes the first voltage and the second voltage, and uses the stabilized voltage to supply power to the second control circuit 204; the third terminal 201 receives and outputs the first level and the second level to the filter circuit 203, the filter circuit 203 extracts the alternating first level and second level and transmits the extracted first level and second level to the signal adjusting circuit 205, the signal adjusting circuit 205 adjusts the alternating first level and second level into digital signals and transmits the digital signals to the second control circuit 204, and the second control circuit 204 communicates with the first electronic device 100 according to the digital signals. In the second electronic device 200 according to the above embodiment, the second control circuit 204 receives the alternating first level and the second level input by the filter circuit 203 from the third terminal 201, and communicates with the first electronic device 100 according to the alternating first level and the alternating second level. According to the scheme, the first electronic equipment and one or more electronic equipment are powered and communicated simultaneously through the two-wire circuit, so that the cost of the equipment is greatly reduced, and the maintenance efficiency of the equipment is improved.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a two-wire power supply communication system according to an embodiment of the present disclosure.

As shown in fig. 5, the two-wire power supply communication system 300 includes:

a first electronic device 310; and

a second electronic device 320;

the first electronic device 310 is used to power the second electronic device 320, and the first electronic device 310 can also communicate with the second electronic device 320.

In some embodiments, the first electronic device 310 and the second electronic device 320 may be circuit boards.

It should be noted that, as will be clear to those skilled in the art, for convenience and brevity of description, the specific working process of the two-wire powered communication system 300 is described above, reference may be made to the corresponding processes in the foregoing embodiments of the first electronic device 310 and the second electronic device 320, and details are not described herein.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present application. In this specification, schematic representations of the above terms 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.

The above embodiments are only preferred embodiments of the present application, and the protection scope of the present application is not limited thereto, and any insubstantial changes and substitutions made by those skilled in the art based on the present application are intended to be covered by the present application.

Claims (10)

1. A first electronic device, characterized in that the first electronic device comprises a first terminal and a second terminal for connecting one or more second electronic devices;

the first electronic device comprises a power supply, a first control circuit, a first branch circuit and a second branch circuit, wherein the first branch circuit and the second branch circuit are connected in parallel and are connected between the power supply and a first terminal, and the second terminal is connected with the ground of the power supply;

the first control circuit is capable of controlling the first branch and/or the second branch to communicate the power source and the first terminal to cause the first terminal to alternately output a first level and a second level, the alternately output first level and second level being used for communication with the second electronic device.

2. The first electronic device of claim 1, wherein the first branch includes a switching circuit controlled to be turned on and off by the first control circuit, the power supply outputting a first level to the first terminal through the turned-on first branch when the switching circuit is turned on;

when the switch circuit is switched off, the power supply outputs a second level to the first terminal through the second branch circuit;

the first control circuit can alternately control the switch circuit to be switched on and switched off so that the first terminal alternately outputs the first level and the second level.

3. The first electronic device of claim 2, wherein the switching circuit comprises a first controlled switch connected between the power source and the first terminal and controlled to be on or off by the first control circuit.

4. The first electronic device of claim 3, wherein the pressure drop of the second branch is greater than the pressure drop when the first branch is connected;

the first controlled switch comprises a MOS tube and/or a triode, the second branch comprises a diode and/or a resistor, the anode of the diode is connected with the power supply, and the cathode of the diode is connected with the first terminal.

5. The first electronic device of any of claims 1-3, wherein the power supply outputs a first voltage to the first terminal through the conducting first branch or a second voltage to the first terminal through the second branch, the first voltage or the second voltage capable of powering a second electronic device.

6. A second electronic device, characterized in that it comprises a third terminal for connecting a first terminal of a first electronic device according to any one of claims 1-5, and a fourth terminal for connecting a second terminal of said first electronic device; the second electronic device comprises a filter circuit and a second control circuit; the filter circuit is connected between the third terminal and the second control circuit;

the second control circuit receives alternating first and second levels at which the filter circuit extracts the third terminal input, and communicates with the first electronic device according to the alternating first and second levels.

7. The second electronic device of claim 6, wherein the second electronic device includes a signal conditioning circuit connected between the filtering circuit and the second control circuit;

the signal conditioning circuit is operable to condition the alternating first and second levels into a digital signal.

8. The second electronic device of claim 7, wherein the signal conditioning circuit includes a controlled switching tube connected between the third terminal and the fourth terminal;

when the controlled switch tube is controlled to be switched on by the filter circuit, the signal adjusting circuit outputs low level to the second control circuit, and when the controlled switch tube is controlled to be switched off by the filter circuit, the signal adjusting circuit outputs high level to the second control circuit.

9. A second electronic device according to any of claims 6-8, comprising a power supply voltage regulator circuit connected between the third terminal and the second control circuit;

the power supply voltage stabilizing circuit is used for stabilizing the electric energy flowing through the third terminal and supplying the stabilized electric energy to the second control circuit.

10. A two-wire powered communication system, comprising:

the first electronic device of any of claims 1-5; and

the second electronic device of any of claims 6-9;

the first electronic device is used for supplying power to a second electronic device, and the first electronic device can also communicate with the second electronic device.

Images