CN213457704U - 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 first terminal, a second terminal and a first switch circuit, wherein the first terminal is connected with the power supply through the first switch circuit, and the second terminal is connected with the ground of the power supply; the first switch circuit is controlled to be connected or disconnected by the first control circuit, and the first control circuit is also connected to the first terminal; when the first switch circuit is controlled to be connected, the power supply supplies power to the energy storage circuit of the second electronic equipment through the first terminal; when the first switch circuit is controlled to be switched off, the first control circuit communicates with the second electronic device through the first terminal. According to the scheme, the first electronic equipment and one or more second electronic equipment are powered and 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

With the increasing complexity of the existing household electrical appliances, more than two circuit boards are required to be installed at different positions of the appliances in one appliance, and power supply and communication are carried out between the two circuit boards through flat cables. In general, as long as 4 signal lines are required, the signal lines are a power supply positive electrode, a power supply negative electrode, a transmission line and a reception line. If the circuit board quantity that needs the communication increases or the distance that two boards distribute is than far away, communication winding displacement quantity and length all can increase at double, can lead to the winding displacement cost to rise at double like this, the dense numb distribution of winding displacement, the structure space utilization of product is not high, be unfavorable for the miniaturization of product design, the reliability of product operation is poor, in case a signal has the problem (for example contact failure), whole product just can not normally work, low in production efficiency, prevent slow-witted effect not good, staff need insert too many winding displacements, low in production efficiency and insert the mistake easily, visual detection is difficult to discover, and product maintenance difficulty scheduling problem.

SUMMERY OF THE UTILITY MODEL

The main object of the present application is to provide an electronic device and a two-wire power supply communication system, which aim to enable a first electronic device and one or more second electronic devices to perform power supply and communication through a two-wire circuit, thereby greatly reducing the cost of the device and improving 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 second electronic devices comprising a tank circuit;

the first electronic equipment comprises a power supply, a first switch circuit and a first control circuit, wherein the first terminal is connected with the power supply through the first switch circuit, and the second terminal is connected with the ground of the power supply;

the first switch circuit is controlled to be connected or disconnected by the first control circuit, and the first control circuit is also connected to the first terminal;

when the first switch circuit is controlled to be connected, the power supply supplies power to the energy storage circuit of the second electronic equipment through the first terminal; when the first switch circuit is controlled to be switched off, the first control circuit communicates with the second electronic device through the first terminal.

In a second aspect, the present application further provides a second electronic device, where the second electronic device includes a third terminal and a fourth terminal, the third terminal is used for connecting to the first terminal of the first electronic device, and the fourth terminal is used for connecting to the second terminal of the first electronic device; the second electronic equipment further comprises an energy storage circuit, a second control circuit and a second switch circuit;

the energy storage circuit is connected between the third terminal and the fourth terminal, and the second switch circuit is connected between the third terminal and the energy storage circuit;

the energy storage circuit is used for supplying power to the second control circuit, and the second control circuit is also connected with the third terminal;

when the third terminal inputs a continuous high level, the second switch circuit is conducted, and the energy storage circuit stores the electric energy flowing through the second switch circuit; when the third terminal does not input continuous high level, the second control circuit receives or sends communication signals with alternating high and low levels through the third terminal.

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 switch circuit and a first control circuit, wherein a first terminal is connected with the power supply through the first switch circuit, and a second terminal is connected with the ground of the power supply; the first switch circuit is controlled to be connected or disconnected by the first control circuit, and the first control circuit is also connected to the first terminal; when the first switch circuit is controlled to be communicated, the power supply supplies power to the energy storage circuit of the second electronic equipment through the first terminal; when the first switch circuit is controlled to be switched off, the first control circuit communicates with the second electronic device through the first terminal. According to the scheme, the first electronic equipment and one or more second electronic equipment are powered and 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, and the second electronic devices 200 comprise a tank circuit 203.

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. 2, the first electronic device 100 includes a power source VCC, a first switch circuit 103, and a first control circuit 104, wherein the first terminal 101 is connected to the power source VCC through the first switch circuit 103, and the second terminal 102 is connected to the ground of the power source VCC.

In some embodiments, the first switch circuit 103 is controlled to be connected or disconnected by a first control circuit 104, and the first control circuit 104 is further connected to the first terminal 101.

Illustratively, the first switch circuit 103 is controlled to be on when the first control circuit 104 outputs a low level, and the first switch circuit 103 is controlled to be off when the first control circuit 104 outputs a high level. The first switch circuit 103 is controlled to be switched off and on by the high and low levels output by the first control circuit 104, so that the control accuracy is greatly improved.

In some embodiments, the first control circuit 104 may be a micro-control unit, which may be a single chip, or may be other devices.

In one embodiment, when the first switch circuit 103 is controlled to be connected, the power source VCC supplies power to the tank circuit 203 of the second electronic device 200 through the first terminal 101; when the first switch circuit 103 is controlled to be turned off, the first control circuit 104 communicates with the second electronic 200 device through the first terminal 101. By controlling the first switch circuit 103 to be connected, the power source VCC supplies power to the energy storage circuit 203 of the second electronic device 200, and when the first switch circuit 103 is controlled to be disconnected, the first control circuit 104 communicates with the second electronic device 200 through the first terminal 101, so that two-wire system can be realized, namely, power supply and communication can be carried out.

In some embodiments, as shown in fig. 2, the first switch circuit 103 includes a first controlled switch 1031, the first controlled switch 1031 is connected between the power source VCC and the first terminal 101, and is controlled to be connected or disconnected by a first control terminal of the first control circuit 104.

Illustratively, the first control terminal of the first control circuit 104 outputs a low level to control the first controlled switch 1031 to connect the power source VCC to the first terminal 101, so that the power source VCC supplies power to the tank circuit 203 of the second electronic device 200 through the first terminal 101; the first control terminal of the first control circuit 104 outputs a high level to control the first controlled switch 1031 to disconnect the power source VCC and the first terminal 101, so that the power source VCC stops supplying power to the tank circuit 203 of the second electronic device 200.

In some embodiments, the first controlled switch 1031 may be a MOS transistor. In other embodiments, the first controlled switch 1031 may be a transistor.

In some embodiments, as shown in fig. 2, the first switch circuit 103 includes a first resistor 1032, one end of the first resistor 1032 is connected to the power source VCC, and the other end is connected to the controlled end of the first controlled switch 1031. The stability of the first controlled switch 1031 may be enhanced by the first resistor 1032.

In some embodiments, the first electronic device 100 includes a second resistor 105, and the second resistor 105 is connected between the second control terminal of the first control circuit 104 and the first terminal 101. The first control circuit 104 is prevented from being damaged by the second resistor 105, which improves the safety of the device.

In some embodiments, the first control circuit 104 is used to intermittently control the first switch circuit 103 to be connected and disconnected, and when the first switch circuit 103 is disconnected, the first control circuit communicates with the second electronic device 200 through the first terminal 101. Power supply and communication are carried out through the two-wire system circuit, and the utilization rate of the circuit is greatly improved.

In some embodiments, the first electronic device 100 further includes a third resistor 106, and the third resistor 106 is connected between the first control circuit 104 and the first switch circuit.

In the first electronic device according to the embodiment, when the first switch circuit is controlled to be connected, the power supply supplies power to the tank circuit of the second electronic device through the first terminal; when the first switch circuit is controlled to be switched off, the first control circuit communicates with the second electronic device through the first terminal. According to the scheme, the first electronic equipment and one or more second electronic equipment are powered and 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 tank circuit 203, a second control circuit 204, and a second switching circuit 205.

The tank circuit 203 is connected between the third terminal 201 and the fourth terminal 202, and the second switch circuit 205 is connected between the third terminal 201 and the tank circuit 203.

In some embodiments, the second control circuit 204 is connected to the third terminal 202, and the tank circuit 203 is further configured to supply power to the second control circuit 204.

Specifically, when the third terminal 201 inputs a continuous high level, the second switch circuit 205 is turned on, and the energy storage circuit 203 stores the electric energy flowing through the second switch circuit 205; when the third terminal 201 does not input a continuous high level, the second control circuit 204 receives or transmits a communication signal with alternating high and low levels through the third terminal 201.

In some embodiments, as shown in fig. 4, the second switching circuit 205 includes a switching element 2051 connected between the third terminal 201 and the tank circuit 203.

For example, when the third terminal 201 inputs a continuous high level, the switching element 2051 is turned on to charge the energy storage circuit 203. When the third terminal 201 does not input a continuous high level, the switching element 2051 is turned on and off to prevent the power in the energy storage circuit 203 from flowing back.

In some embodiments, the switching element 2051 may be a diode, an anode of the diode is connected to the third terminal 201, and a cathode of the diode is connected to the energy storage circuit 203.

In some embodiments, as shown in fig. 4, the energy storage circuit 203 includes an energy storage capacitor 2031, wherein one end of the energy storage capacitor 2031 is connected to the switching element 2051, and the other end is connected to the fourth terminal 202 (ground).

For example, when the switching element 2051 is turned on, the energy storage capacitor 2031 stores the energy flowing through the switching element 2051; when the second control circuit 204 operates, the energy storage capacitor 2031 provides electric energy for the second control circuit 204.

In some embodiments, the energy storage circuit 203 further includes a voltage regulator connected to the positive electrode of the energy storage capacitor 2031. The voltage stabilizing component enables the power supply voltage of the stored energy to be more stable.

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

In some embodiments, as shown in fig. 4, the second electronic device 200 further includes a fourth resistor 206, and the fourth resistor 206 is connected between the third terminal 201 and the second control circuit 204. The fourth resistor 206 prevents the second control circuit 204 from being damaged, thereby improving the safety of the device.

In some embodiments, the first control circuit 104 controls the first controlled switch 1031 to connect the power source VCC with the first terminal 101, so that the power source VCC supplies power to the second electronic device 200, when a continuous high level is input to the third terminal 201, the control switch element 2051 is turned on, and the energy storage capacitor 2031 stores the electric energy output by the power source VCC; when the first electronic device 100 and the second electronic device 200 need to communicate, the first control circuit 104 controls the first controlled switch 1031 to disconnect the power source VCC from the first terminal 101, the second control terminal of the first control circuit 104 sends a communication signal and transmits the communication signal to the second electronic device 200 through the first terminal 101, and when the second electronic device 200 receives the communication signal, the control switch element 2051 is turned off and controls the energy storage capacitor 2031 to supply power to the second control circuit 204, so that the second control circuit 204 receives or sends a communication signal with alternating high and low levels through the third terminal 201.

In the second electronic device according to the embodiment, when the third terminal inputs a continuous high level, the second switch circuit is turned on, and the energy storage circuit stores the electric energy flowing through the second switch circuit; when the third terminal does not input a continuous high level, the second control circuit receives or transmits a communication signal with alternating high and low levels through the third terminal. According to the scheme, the first electronic equipment and one or more second electronic equipment carry out power supply and communication 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.

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, wherein the first electronic device comprises a first terminal and a second terminal, wherein the first terminal and the second terminal are used for connecting one or more second electronic devices, and wherein the second electronic devices comprise a tank circuit;

the first electronic equipment comprises a power supply, a first switch circuit and a first control circuit, wherein the first terminal is connected with the power supply through the first switch circuit, and the second terminal is connected with the ground of the power supply;

the first switch circuit is controlled to be connected or disconnected by the first control circuit, and the first control circuit is also connected to the first terminal;

when the first switch circuit is controlled to be connected, the power supply supplies power to the energy storage circuit of the second electronic equipment through the first terminal; when the first switch circuit is controlled to be switched off, the first control circuit communicates with the second electronic device through the first terminal.

2. The first electronic device of claim 1, wherein the first switching circuit comprises a first controlled switch connected between the power source and the first terminal and controlled to be on or off by a first control terminal of the first control circuit.

3. The first electronic device of claim 2, wherein the first controlled switch comprises any one of a MOS transistor and a triode.

4. The first electronic device of claim 2, wherein the first switching circuit comprises a first resistor having one end connected to the power source and another end connected to the controlled end of the first controlled switch.

5. The first electronic device of any of claims 1-4, wherein the first electronic device includes a second resistor connected between the second control terminal of the first control circuit and the first terminal.

6. The first electronic device of any of claims 1-4, wherein the first control circuit is configured to intermittently control the first switching circuit to be connected and disconnected, and to communicate with the second electronic device through the first terminal when the first switching circuit is disconnected.

7. 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 1-6, and a fourth terminal for connecting a second terminal of said first electronic device; the second electronic equipment further comprises an energy storage circuit, a second control circuit and a second switch circuit;

the energy storage circuit is connected between the third terminal and the fourth terminal, and the second switch circuit is connected between the third terminal and the energy storage circuit;

the energy storage circuit is used for supplying power to the second control circuit, and the second control circuit is also connected with the third terminal;

when the third terminal inputs a continuous high level, the second switch circuit is conducted, and the energy storage circuit stores the electric energy flowing through the second switch circuit; when the third terminal does not input continuous high level, the second control circuit receives or sends communication signals with alternating high and low levels through the third terminal.

8. The second electronic device of claim 7, wherein the second switching circuit includes a switching element connected between the third terminal and the tank circuit.

9. The second electronic device of claim 8, wherein the tank circuit comprises a tank capacitor and the switching element comprises a diode.

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

the first electronic device of any of claims 1-6; and

the second electronic device of any of claims 7-9;

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.

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