Double-wire simplex communication and power supply integrated circuit

Abstract

The utility model relates to the technical field of communication, in particular to a double-wire simplex communication and power supply integrated circuit, which comprises a host communication side and a slave communication side, and a first communication end and a second communication end of the host communication side are electrically connected with a first communication end and a second communication end of the slave communication side respectively; the host communication side comprises a host and a double-wire communication unit; the slave communication side comprises a power supply unit, a slave unit and a load unit; the host continuously controls the double-wire communication unit to drive the power supply unit to supply power; when the host communication side communicates with the slave communication side, the host controls the double-wire communication unit to continuously send a communication signal to the slave unit until the slave unit is connected with the load unit, and the double-wire communication unit acquires a response signal from the power supply unit and feeds back the response signal to the host to stop communication; therefore, simplex communication between the master machine and the slave machine and power supply of the slave machine are achieved through the two communication lines, installation and debugging are simple, the installation complexity and the labor cost of a construction site are reduced, and the anti-interference capability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of communication, in particular to a two-wire simplex communication and power supply integrated circuit. Background Art

[0002] With the rapid development of the home appliance industry, the manufacturing cost of home appliances has become one of the important parameters that designers consider. In order to meet the communication and user interaction needs of home appliances, three-wire or four-wire transmission methods are generally used in the market, following mainstream communication protocols such as I2C and UART; however, some application scenarios only require the host to send and the slave to respond (simplex communication), and the use of mainstream communication protocols is overkill, and three-wire or four-wire installation and debugging are troublesome, increasing the complexity of installation and labor costs at the construction site; more importantly, redundant communication protocols will also cause unnecessary interference in communication. Utility Model Content

[0003] In view of the above-mentioned defects, the purpose of the utility model is to propose a two-wire simplex communication and power supply integrated circuit, which realizes simplex communication between master and slave machines and power supply of slave machines by two communication lines. It is simple to install and debug, reduces the installation complexity and labor cost at the construction site, and has strong anti-interference ability.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A two-wire simplex communication and power supply integrated circuit comprises a host communication side and a slave communication side, wherein a first communication terminal and a second communication terminal of the host communication side are electrically connected to a first communication terminal and a second communication terminal of the slave communication side respectively;

[0006] The host communication side includes a host and a two-wire communication unit; the first output end and the second output end of the two-wire communication unit are respectively used as the first communication end and the second communication end of the host communication side; the communication end of the host is electrically connected to the communication end of the two-wire communication unit;

[0007] The slave communication side includes a power supply unit, a slave unit and a load unit; the first input end of the power supply unit or the receiving end of the slave unit is used as the first communication end of the slave communication side, and the second input end of the power supply unit is used as the second communication end of the slave communication side; the power supply end of the slave unit and the power supply end of the load unit are both electrically connected to the power supply end of the power supply unit, and the control end of the load unit is electrically connected to the response end of the slave unit;

[0008] The host continuously controls the two-wire communication unit to drive the power supply unit to supply power;

[0009] When the host communication side and the slave communication side communicate, the host controls the two-wire communication unit to continuously send communication signals to the slave unit until the slave unit is connected to the load unit. The two-wire communication unit collects a response signal from the power supply unit and feeds it back to the host to stop communication.

[0010] Further, the two-wire communication unit includes a first communication circuit, a second communication circuit and a sampling resistor RCS1; one end of the sampling resistor RCS1, the communication end of the first communication circuit and the communication end of the second communication circuit are all used as the communication end of the two-wire communication unit, and the output end of the first communication circuit and the output end of the second communication circuit are respectively used as the first output end and the second output end of the two-wire communication unit;

[0011] The power supply end of the first communication circuit is electrically connected to the power supply end of the second communication circuit, the ground end of the first communication circuit and the ground end of the second communication circuit are both electrically connected to one end of the sampling resistor RCS1, the other end of the sampling resistor RCS1 is grounded, and the first control end and the second control end of the first communication circuit are electrically connected to the first control end and the second control end of the second communication circuit respectively;

[0012] When the first communication circuit is turned on and the second communication circuit is turned off, the host communication side and the slave communication side are in a communication state; when the second communication circuit is turned off and the second communication circuit is turned on, the host communication side and the slave communication side are in an idle state.

[0013] Furthermore, the circuit structures of the first communication circuit and the second communication circuit are the same;

[0014] The first communication circuit includes a resistor R1, a resistor R3, a resistor R5, a resistor R7, a resistor R10, a transistor Q1, a MOS tube M1 and a MOS tube M2; one end of the resistor R7 is used as a communication end of the first communication circuit, the source of the MOS tube M1 is used as a power supply end of the first communication circuit, the source of the MOS tube M3 is used as a ground end of the first communication circuit, the drain of the MOS tube M1 is used as an output end of the first communication circuit, the gate of the MOS tube M3 is used as a second control end of the first communication circuit, and one end of the resistor R10 is used as a second control end of the first communication circuit;

[0015] One end of the resistor R7 and the other end of the resistor R10 are both electrically connected to one end of the resistor R5, the other end of the resistor R7 is grounded, the other end of the resistor R5 is electrically connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is electrically connected to one end of the resistor R3, the other end of the resistor R3 and one end of the resistor R1 are both electrically connected to the gate of the MOS transistor M1, the source of the MOS transistor M1 is electrically connected to the other end of the resistor R1, and the drain of the MOS transistor M1 is electrically connected to the drain of the MOS transistor M3;

[0016] When the transistor Q1 is turned on, the first communication circuit is turned on; when the transistor Q1 is turned off, the first communication circuit is turned off.

[0017] Further, the slave unit includes a slave receiving circuit and a slave; the power supply end of the slave receiving circuit is used as the power supply end of the slave unit, the input end of the slave receiving circuit is used as the receiving end of the slave unit, and the slave output end is used as the response end of the slave unit; the output end of the slave receiving circuit is electrically connected to the input end of the slave;

[0018] The slave receiving circuit receives the communication signal, is turned on or off according to the communication signal, and sends specific information to the slave; after the slave has received the specific information, the slave turns on the load unit.

[0019] Further, the slave receiving circuit includes a diode D1, a resistor R11, a resistor R12, a resistor R15 and a transistor Q3; one end of the resistor R11 is used as a power supply end of the slave receiving circuit, one end of the resistor R12 is used as an output end of the slave receiving circuit, and an anode of the diode D1 is used as an input end of the slave receiving circuit;

[0020] The cathode of the diode D1 is electrically connected to one end of the resistor R15, the other end of the resistor R15 is electrically connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, and the collector of the transistor Q3 and the other end of the resistor R12 are electrically connected to the other end of the resistor R11.

[0021] Further, the power supply unit includes a rectifier bridge ABS10 and a capacitor EC1; the first input end and the second input end of the rectifier bridge ABS10 are respectively used as the first input end and the second input end of the power supply unit, and the first output end of the rectifier bridge ABS10 is used as the power supply end of the power supply unit;

[0022] The first output terminal and the second output terminal of the rectifier bridge ABS10 are electrically connected to the positive electrode and the negative electrode of the capacitor EC1 respectively, and the negative electrode of the capacitor EC1 is grounded.

[0023] Furthermore, the load unit includes a load and a MOS tube M5; the power supply end of the load is used as the power supply end of the load unit, and the gate of the MOS tube M5 is used as the control end of the load unit;

[0024] The source of the MOS transistor M5 is electrically connected to the ground of the load, and the drain of the MOS transistor M5 is grounded.

[0025] The technical solution provided by the utility model can include the following beneficial effects: only two communication lines are required between the host communication side and the slave communication side, and the first communication end and the second communication end of the host communication side can be electrically connected to the first communication end and the second communication end of the slave communication side respectively, so as to realize communication between the host and the slave, and the installation and debugging are simple, which reduces the installation complexity and labor cost at the construction site.

[0026] Specifically, the communication between the host and the slave adopts a simplified custom communication protocol to realize the response communication between the master and the slave, that is, two-wire simplex communication. For example, in the communication state, the host first sends a synchronization signal to determine the communication baud rate of the current frame data. The synchronization signal here is a fixed number of square waves, and then sends the data. The data field consists of a start signal and data. The length of the data sent each time is not fixed. After the slave receives and responds, the idle state is restored. Otherwise, the host keeps sending or changes the baud rate and then resends.

[0027] Therefore, the circuit structure of two-wire simplex communication is as follows: the host communication side includes the host and the two-wire communication unit, and the slave communication side includes the power supply unit, the slave unit and the load unit; when the communication line is connected, the host can continuously control the two-wire communication unit (by PHASE_A and PHASE_B) to drive the power supply unit to supply power, that is, whether Sig1=1, Sig2=0 (communication state) or Sig1=0, Sig2=1 (idle state), the power supply unit can be guaranteed to supply power continuously; when the host communication side and the slave communication side communicate, the host controls the two-wire communication unit (that is, Sig1=1, Sig2=0) to continuously send communication signals to the slave unit (by PHASE_ A sends), until the slave unit receives the data, the slave unit will turn on the load unit, causing the current in the circuit of the power supply unit to change (response signal), which is detected by the two-wire communication unit and fed back to the host (by ACK), causing the host to stop communicating and switch from the communication state to the idle state; thereby, the two-wire can simultaneously realize simplex communication and power supply between the master and slave, the communication protocol is simple, and the anti-interference ability is strong. Compared with the mainstream communication protocol, the power line has a higher voltage amplitude, a relatively large current, and better anti-interference ability. At the same time, when the two communication lines are entangled together, if the communication line is introduced into the noise by external electromagnetic interference or other uncertain factors, the common mode signal generated is easier to filter out. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is a schematic diagram of a two-wire simplex communication and power supply integrated circuit in one embodiment.

[0029] Figure 2 Yes Figure 1 A partial circuit of a two-wire simplex communication and power supply integrated circuit Figure 1 .

[0030] Figure 3 Yes Figure 1 A partial circuit of a two-wire simplex communication and power supply integrated circuit Figure 2 .

[0031] Figure 4 Yes Figure 1 A partial circuit of a two-wire simplex communication and power supply integrated circuit Figure 3 .

[0032] Wherein: host 1, two-wire communication unit 2, power supply unit 3, slave unit 4, load unit 5, host communication side 6, slave communication side 7, first communication circuit 21, second communication circuit 22, sampling resistor RCS1, resistor R1, resistor R3, resistor R5, resistor R7, resistor R10, transistor Q1, MOS tube M1, MOS tube M2, slave receiving circuit 41, slave 42, diode D1, resistor R11, resistor R12, resistor R15, transistor Q3, rectifier bridge ABS10, capacitor EC1, load 51, MOS tube M5. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0036] Combine the following Figures 1 to 4 , describing a two-wire simplex communication and power supply integrated circuit according to an embodiment of the utility model.

[0037] A two-wire simplex communication and power supply integrated circuit, comprising a host communication side 6 and a slave communication side 7, wherein a first communication terminal and a second communication terminal of the host communication side 6 are electrically connected to a first communication terminal and a second communication terminal of the slave communication side 7 respectively;

[0038] The host communication side 6 includes a host 1 and a two-wire communication unit 2; the first output terminal and the second output terminal of the two-wire communication unit 2 are respectively used as the first communication terminal and the second communication terminal of the host communication side 6; the communication terminal of the host 1 is electrically connected to the communication terminal of the two-wire communication unit 2;

[0039] The slave communication side 7 includes a power supply unit 3, a slave unit 4 and a load unit 5; the first input end of the power supply unit 3 or the receiving end of the slave unit 4 is used as the first communication end of the slave communication side 7, and the second input end of the power supply unit 3 is used as the second communication end of the slave communication side 7; the power supply end of the slave unit 4 and the power supply end of the load unit 5 are both electrically connected to the power supply end of the power supply unit 3, and the control end of the load unit 5 is electrically connected to the response end of the slave unit 4;

[0040] The host 1 continuously controls the two-wire communication unit 2 to drive the power supply unit 3 to supply power;

[0041] When the host communication side 6 and the slave communication side 7 communicate, the host 1 controls the two-wire communication unit 2 to continuously send a communication signal to the slave unit 4 until the slave unit 4 is connected to the load unit 5. The two-wire communication unit 2 collects a response signal from the power supply unit 3 and feeds it back to the host 1 to stop communication.

[0042] The utility model proposes a preferred embodiment of a two-wire simplex communication and power supply integrated circuit, such as Figure 1 As shown, only two communication lines are needed between the host communication side 6 and the slave communication side 7, so as to electrically connect the first communication terminal and the second communication terminal of the host communication side 6 with the first communication terminal and the second communication terminal of the slave communication side 7 respectively, thereby realizing communication between the host and the slave, and the installation and debugging are simple, which reduces the installation complexity and labor cost at the construction site.

[0043] Specifically, the communication between the host and the slave adopts a simplified custom communication protocol to realize the response communication between the master and the slave, that is, two-wire simplex communication. For example, in the communication state, the host first sends a synchronization signal to determine the communication baud rate of the current frame data. The synchronization signal here is a fixed number of square waves, and then sends the data. The data field consists of a start signal and data. The length of the data sent each time is not fixed. After the slave receives and responds, the idle state is restored. Otherwise, the host keeps sending or changes the baud rate and then resends.

[0044] Therefore, the circuit structure of two-wire simplex communication is as follows: the host communication side 6 includes the host 1 and the two-wire communication unit 2, and the slave communication side 7 includes the power supply unit 3, the slave unit 4 and the load unit 5; when the communication line is connected, the host 1 can continuously control the two-wire communication unit 2 (by PHASE_A and PHASE_B) to drive the power supply unit 3 to supply power, that is, whether Sig1=1, Sig2=0 (communication state) or Sig1=0, Sig2=1 (idle state), the power supply unit 3 can be guaranteed to supply power continuously; when the host communication side 6 and the slave communication side 7 communicate, the host 1 controls the two-wire communication unit 2 (that is, Sig1=1, Sig2=0) to continuously send a communication signal to the slave unit 4 (by PHASE_A and PHASE_B) ASE_A sends), until the slave unit 4 receives the data, the slave unit 4 will turn on the load unit 5, causing the current in the circuit of the power supply unit 3 to change (response signal), which is detected by the two-wire communication unit 2 and fed back to the host 1 (by ACK), causing the host 1 to stop communicating and switch from the communication state to the idle state; thereby, the simplex communication and power supply between the master and the slave are simultaneously realized by the two-wire, the communication protocol is simple, the anti-interference ability is strong, and the power line has a higher voltage amplitude and a relatively large current than the mainstream communication protocol, and the anti-interference ability is better. At the same time, when the two communication lines are entangled together, if the communication line is introduced into the noise by external electromagnetic interference or other uncertain factors, the common mode signal generated is easier to filter out.

[0045] Furthermore, the two-wire communication unit 2 includes a first communication circuit 21, a second communication circuit 22 and a sampling resistor RCS1; one end of the sampling resistor RCS1, the communication end of the first communication circuit 21 and the communication end of the second communication circuit 22 are all used as the communication end of the two-wire communication unit 2, and the output end of the first communication circuit 21 and the output end of the second communication circuit 22 are respectively used as the first output end and the second output end of the two-wire communication unit 2;

[0046] The power supply end of the first communication circuit 21 is electrically connected to the power supply end of the second communication circuit 22, the ground end of the first communication circuit 21 and the ground end of the second communication circuit 22 are both electrically connected to one end of the sampling resistor RCS1, the other end of the sampling resistor RCS1 is grounded, and the first control end and the second control end of the first communication circuit 21 are electrically connected to the first control end and the second control end of the second communication circuit 22 respectively;

[0047] When the first communication circuit 21 is turned on and the second communication circuit 21 is turned off, the host communication side 6 and the slave communication side 7 are in a communication state; when the second communication circuit 21 is turned off and the second communication circuit 21 is turned on, the host communication side 6 and the slave communication side 7 are in an idle state.

[0048] In this embodiment, Figure 2As shown, the custom communication protocol is mainly implemented by the two-wire communication unit 2, so the two-wire communication unit 2 is composed of a first communication circuit 21 and a second communication circuit 22, and the on-off relationship between the two is used to represent the communication state and the idle state, that is, when one of the circuits is turned on, the other must be turned off, thereby achieving simplex communication while ensuring that the power supply unit 3 is always in a power supply state; and after the slave unit 4 is connected to the load unit 5, the power load will be increased, and the power supply current of the power supply unit 3 will be increased, which can be collected and fed back to the host 1 through the sampling resistor RCS1 to obtain a response signal; even when an abnormally large current appears in the circuit, it can also be collected and fed back to the host 1 through the sampling resistor RCS1, and the slave power supply can be turned off through Sig1 and Sig2.

[0049] Furthermore, the circuit structures of the first communication circuit 21 and the second communication circuit 22 are the same;

[0050] The first communication circuit 21 includes a resistor R1, a resistor R3, a resistor R5, a resistor R7, a resistor R10, a transistor Q1, a MOS transistor M1 and a MOS transistor M2; one end of the resistor R7 is used as a communication end of the first communication circuit 21, the source of the MOS transistor M1 is used as a power supply end of the first communication circuit 21, the source of the MOS transistor M3 is used as a ground end of the first communication circuit 21, the drain of the MOS transistor M1 is used as an output end of the first communication circuit 21, the gate of the MOS transistor M3 is used as a second control end of the first communication circuit 21, and one end of the resistor R10 is used as a second control end of the first communication circuit 21;

[0051] One end of the resistor R7 and the other end of the resistor R10 are electrically connected to one end of the resistor R5, the other end of the resistor R7 is grounded, the other end of the resistor R5 is electrically connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is electrically connected to one end of the resistor R3, the other end of the resistor R3 and one end of the resistor R1 are electrically connected to the gate of the MOS tube M1, the source of the MOS tube M1 is electrically connected to the other end of the resistor R1, and the drain of the MOS tube M1 is electrically connected to the drain of the MOS tube M3;

[0052] When the transistor Q1 is turned on, the first communication circuit 21 is turned on; when the transistor Q1 is turned off, the first communication circuit 21 is turned off.

[0053] In this embodiment, to realize the simplex communication and power supply principle of the two-wire communication unit 2, it is necessary to design two first communication circuits 21 and second communication circuits 22 with the same circuit structure. The host 1 uses Sig1 to control the on and off of the transistor Q1 and the MOS tube M4, and uses Sig2 to control the on and off of the transistor Q2 and the MOS tube M3. When Sig1 is at a high level and Sig2 is at a low level, the transistor Q1 and the MOS4 are turned on, and the resistor R1 and the resistor R3 divide the voltage to control the MOS tube M1 to be turned on. PHASE_A is used to realize simplex communication (in the communication state). When Sig1 is at a low level and Sig2 is at a high level, the transistor Q2 and the MOS tube M3 are turned on, and the resistor R2 and the resistor R4 divide the voltage to control the MOS tube M2 to be turned on, and PHASE_A is in an idle state; and because the two communication states are to control Sig1 and Sig2 to be alternately high levels to form a sine wave, the power supply unit 3 can receive the sine wave through PHASE_A and PHASE_B for shaping processing to form a power supply voltage to maintain the power supply of the slave.

[0054] Further, the slave unit 4 includes a slave receiving circuit 41 and a slave 42; the power supply end of the slave receiving circuit 41 is used as the power supply end of the slave unit 4, the input end of the slave receiving circuit 41 is used as the receiving end of the slave unit 4, and the output end of the slave 42 is used as the answering end of the slave unit 4; the output end of the slave receiving circuit 41 and the input end of the slave 42 are electrically connected;

[0055] The slave receiving circuit 41 receives the communication signal, is turned on or off according to the communication signal, and sends specific information to the slave 42 ; after the slave 42 receives the specific information, the slave 42 is connected to the load unit 5 .

[0056] In this embodiment, Figure 3 As shown, the slave unit 4 mainly uses the slave receiving circuit 41 to turn on or off according to the communication signal to match the custom communication protocol, so that the slave 42 receives specific information; when the slave 42 has finished receiving, the slave 42 turns on the load unit 5, increases the load of the circuit, increases the current, and is collected and recognized by the host 1 to receive the response signal, thereby terminating the communication state.

[0057] Furthermore, the slave receiving circuit 41 includes a diode D1, a resistor R11, a resistor R12, a resistor R15 and a transistor Q3; one end of the resistor R11 is used as a power supply end of the slave receiving circuit 41, one end of the resistor R12 is used as an output end of the slave receiving circuit 41, and an anode of the diode D1 is used as an input end of the slave receiving circuit 41;

[0058] The cathode of the diode D1 is electrically connected to one end of the resistor R15, the other end of the resistor R15 is electrically connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, and the collector of the transistor Q3 and the other end of the resistor R12 are electrically connected to the other end of the resistor R11.

[0059] In this embodiment, the slave receiving circuit 41 mainly utilizes the unidirectional guiding property of the diode D1 to achieve conduction or cutoff according to the communication signal, thereby realizing simplex communication.

[0060] Further, the power supply unit 3 includes a rectifier bridge ABS10 and a capacitor EC1; the first input terminal and the second input terminal of the rectifier bridge ABS10 are respectively used as the first input terminal and the second input terminal of the power supply unit 3, and the first output terminal of the rectifier bridge ABS10 is used as the power supply terminal of the power supply unit 3;

[0061] The first output terminal and the second output terminal of the rectifier bridge ABS10 are electrically connected to the positive electrode and the negative electrode of the capacitor EC1 respectively, and the negative electrode of the capacitor EC1 is grounded.

[0062] In this embodiment, Figure 4 As shown, the power supply unit 3 receives the sine wave through PHASE_A and PHASE_B to perform shaping processing to form a power supply voltage to maintain the power supply of the slave, and is therefore composed of a rectifier bridge ABS10 and a capacitor EC1.

[0063] Furthermore, the load unit 5 includes a load 51 and a MOS tube M5; the power supply terminal of the load 51 is used as the power supply terminal of the load unit 5, and the gate of the MOS tube M5 is used as the control terminal of the load unit 5;

[0064] The source of the MOS transistor M5 is electrically connected to the ground terminal of the load 51 , and the drain of the MOS transistor M5 is grounded.

[0065] In this embodiment, in order to add a load to the power supply unit 3, the load unit 5 is composed of a load 51 (such as a resistor) and a MOS tube M5. The MOS tube M5 is controlled by the slave 42. When the slave 42 receives specific information, it drives the MOS tube M5 to turn on, and the load 51 is connected to the circuit.

[0066] Other structures and operations of a two-wire simplex communication and power supply integrated circuit according to the embodiment of the utility model are well known to ordinary technicians in the field and will not be described in detail here.

[0067] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A two-wire simplex communication and power supply integrated circuit, characterized in that: It includes a host communication side and a slave communication side, wherein a first communication terminal and a second communication terminal of the host communication side are electrically connected to a first communication terminal and a second communication terminal of the slave communication side respectively; The host communication side includes a host and a two-wire communication unit; the first output end and the second output end of the two-wire communication unit are respectively used as the first communication end and the second communication end of the host communication side; the communication end of the host is electrically connected to the communication end of the two-wire communication unit; The slave communication side includes a power supply unit, a slave unit and a load unit; the first input end of the power supply unit or the receiving end of the slave unit is used as the first communication end of the slave communication side, and the second input end of the power supply unit is used as the second communication end of the slave communication side; the power supply end of the slave unit and the power supply end of the load unit are both electrically connected to the power supply end of the power supply unit, and the control end of the load unit is electrically connected to the response end of the slave unit; The host continuously controls the two-wire communication unit to drive the power supply unit to supply power; When the host communication side and the slave communication side communicate, the host controls the two-wire communication unit to continuously send communication signals to the slave unit until the slave unit is connected to the load unit. The two-wire communication unit collects a response signal from the power supply unit and feeds it back to the host to stop communication.

2. A two-wire simplex communication and power supply integrated circuit according to claim 1, characterized in that: The two-wire communication unit includes a first communication circuit, a second communication circuit and a sampling resistor RCS1; one end of the sampling resistor RCS1, the communication end of the first communication circuit and the communication end of the second communication circuit are all used as the communication end of the two-wire communication unit, and the output end of the first communication circuit and the output end of the second communication circuit are respectively used as the first output end and the second output end of the two-wire communication unit; The power supply end of the first communication circuit is electrically connected to the power supply end of the second communication circuit, the ground end of the first communication circuit and the ground end of the second communication circuit are both electrically connected to one end of the sampling resistor RCS1, the other end of the sampling resistor RCS1 is grounded, and the first control end and the second control end of the first communication circuit are electrically connected to the first control end and the second control end of the second communication circuit respectively; When the first communication circuit is turned on and the second communication circuit is turned off, the host communication side and the slave communication side are in a communication state; when the second communication circuit is turned off and the second communication circuit is turned on, the host communication side and the slave communication side are in an idle state.

3. A two-wire simplex communication and power supply integrated circuit according to claim 2, characterized in that: The first communication circuit and the second communication circuit have the same circuit structure; The first communication circuit includes a resistor R1, a resistor R3, a resistor R5, a resistor R7, a resistor R10, a transistor Q1, a MOS tube M1 and a MOS tube M2; one end of the resistor R7 is used as a communication end of the first communication circuit, the source of the MOS tube M1 is used as a power supply end of the first communication circuit, the source of the MOS tube M3 is used as a ground end of the first communication circuit, the drain of the MOS tube M1 is used as an output end of the first communication circuit, the gate of the MOS tube M3 is used as a second control end of the first communication circuit, and one end of the resistor R10 is used as a second control end of the first communication circuit; One end of the resistor R7 and the other end of the resistor R10 are both electrically connected to one end of the resistor R5, the other end of the resistor R7 is grounded, the other end of the resistor R5 is electrically connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is electrically connected to one end of the resistor R3, the other end of the resistor R3 and one end of the resistor R1 are both electrically connected to the gate of the MOS transistor M1, the source of the MOS transistor M1 is electrically connected to the other end of the resistor R1, and the drain of the MOS transistor M1 is electrically connected to the drain of the MOS transistor M3; When the transistor Q1 is turned on, the first communication circuit is turned on; when the transistor Q1 is turned off, the first communication circuit is turned off.

4. The two-wire simplex communication and power supply integrated circuit according to claim 1, characterized in that: The slave unit comprises a slave receiving circuit and a slave; the power supply terminal of the slave receiving circuit is used as the power supply terminal of the slave unit, the input terminal of the slave receiving circuit is used as the receiving terminal of the slave unit, and the slave output terminal is used as the response terminal of the slave unit; the output terminal of the slave receiving circuit is electrically connected to the input terminal of the slave; The slave receiving circuit receives the communication signal, is turned on or off according to the communication signal, and sends specific information to the slave; after the slave has received the specific information, the slave turns on the load unit.

5. The two-wire simplex communication and power supply integrated circuit according to claim 1, characterized in that: The slave receiving circuit includes a diode D1, a resistor R11, a resistor R12, a resistor R15 and a transistor Q3; one end of the resistor R11 is used as a power supply end of the slave receiving circuit, one end of the resistor R12 is used as an output end of the slave receiving circuit, and an anode of the diode D1 is used as an input end of the slave receiving circuit; The cathode of the diode D1 is electrically connected to one end of the resistor R15, the other end of the resistor R15 is electrically connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, and the collector of the transistor Q3 and the other end of the resistor R12 are electrically connected to the other end of the resistor R11.

6. The two-wire simplex communication and power supply integrated circuit according to claim 1, characterized in that: The power supply unit includes a rectifier bridge ABS10 and a capacitor EC1; the first input end and the second input end of the rectifier bridge ABS10 are respectively used as the first input end and the second input end of the power supply unit, and the first output end of the rectifier bridge ABS10 is used as the power supply end of the power supply unit; The first output terminal and the second output terminal of the rectifier bridge ABS10 are electrically connected to the positive electrode and the negative electrode of the capacitor EC1 respectively, and the negative electrode of the capacitor EC1 is grounded.

7. The two-wire simplex communication and power supply integrated circuit according to claim 1, characterized in that: The load unit includes a load and a MOS tube M5; the power supply end of the load is used as the power supply end of the load unit, and the gate of the MOS tube M5 is used as the control end of the load unit; The source of the MOS transistor M5 is electrically connected to the ground of the load, and the drain of the MOS transistor M5 is grounded.

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