CN209964051U

CN209964051U - Novel master-slave double-wire non-polarity communication circuit

Info

Publication number: CN209964051U
Application number: CN201921336511.5U
Authority: CN
Inventors: 李文辉
Original assignee: Zhuhai Sima Electronic Technology Co Ltd
Current assignee: Zhuhai Sima Electronic Technology Co Ltd
Priority date: 2019-08-18
Filing date: 2019-08-18
Publication date: 2020-01-17
Anticipated expiration: 2029-08-18

Abstract

The utility model discloses a principal and subordinate double-wire nonpolarity communication circuit, including the circuit diagram, its characterized in that, the circuit includes that the host computer sends data module and follows the machine and receive data module, and a single host computer send module can a plurality of follow machine receiving module of simultaneous communication control, and two module circuit only have two lines to connect in physics to the line does not divide polarity. The host sending module outputs data signals through the single chip microcomputer, the slave receiving module converts the signals into voltage signals in a fixed direction through the rectifier bridge, and the voltage signals sent by the host are obtained through identification data of the single chip microcomputer, so that communication between the host and the slave is completed. The utility model discloses circuit structure is simple reasonable, with low costs, high reliability, convenient to use.

Description

Novel master-slave double-wire non-polarity communication circuit

Technical Field

The utility model relates to a data communication field, concretely relates to principal and subordinate double-wire nonpolarity communication circuit.

Background

Nowadays, communication circuits of a host and a slave are various in shape and variety, but need to be connected in different polarities, are not favorable for installation, are easy to be connected reversely to cause defects, and cause inconvenience for users. The two-wire non-polar communication circuit on the market generally adopts the direct current carrier wave with a complex circuit structure to complete the non-polar connection communication function, so that the cost is increased, and the unstable factors behind the circuit structure are increased once the circuit structure is complicated, so that the product failure probability is increased invisibly.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a novel principal and subordinate double-line nonpolarity communication circuit for solve because the circuit structure causes the cost to improve after complicating, the product defective rate improves the scheduling problem. And the utility model discloses the many slaves of connection control can be corresponded to single host computer.

The utility model provides a technical scheme that its technical problem adopted is: a novel master-slave double-wire non-polar communication circuit comprises a master machine data sending module and a slave machine data receiving module, and the two module circuits are only connected with two wires physically. The host sending module outputs data signals through the single chip microcomputer, the slave receiving module converts the signals into voltage signals in a fixed direction through the rectifier bridge, and the voltage signals sent by the host are obtained through identification data of the single chip microcomputer, so that communication between the host and the slave is completed. The host data sending module circuit comprises a first single chip microcomputer (U1), a first resistor (R1), a second resistor (R2), a first voltage stabilizing diode (ZD 1), an output signal line A and an output signal line B. An output pin of the first single chip microcomputer outputs a signal and is connected with one end of a first resistor, the other end of the first resistor is connected with one end of a second resistor and one end of the cathode of a first voltage stabilizing diode, the anode end of the first voltage stabilizing diode is grounded GND, the other end of the second resistor is connected with an output signal line B, and the output signal line A is grounded GND. The slave data receiving module circuit comprises a receiving signal line A, a receiving signal line B, a rectifier bridge (D1), a third resistor (R3), a fourth resistor (R4), a second voltage stabilizing diode (ZD 2) and a second single chip microcomputer (U2). The receiving signal line A and the receiving signal line B acquire data sent by the host and are respectively connected to a pin 1 and a pin 2 of the rectifier bridge, a pin 3 of the rectifier bridge is grounded GND, a pin 4 of the rectifier bridge is connected to one end of a fourth resistor, the other end of the fourth resistor is connected to a pin of identification data of the second single chip microcomputer, the third resistor is connected between the pin 3 and the pin 4 of the rectifier bridge in parallel, the pin 3 of the rectifier bridge is grounded GND, one end of the cathode of the second voltage stabilizing diode is connected with the pin of identification data of the second single chip microcomputer, and the other end of the anode of the second voltage.

The first voltage stabilizing diode (ZD 1) and the second voltage stabilizing diode (ZD 2) have the function of preventing the circuit from being damaged due to sudden high-voltage inrush into the circuit.

According to the novel master-slave double-wire non-polar communication circuit, when the master machine sends data to the data receiving module, no matter whether the input signal wire A and the input signal wire B of the slave machine data receiving module are in positive connection or negative connection, the slave machine receiving module converts the input voltage signal into the voltage signal in the fixed direction through the rectifier bridge, so that the data signal identified by the slave machine is consistent with the data signal sent by the master machine, and the communication between the master machine and the slave machine is realized.

The beneficial effects of the utility model are that, the utility model discloses utilize two communication line voltages of singlechip output signal control and singlechip pin identification signal to realize principal and subordinate two-wire communication, its circuit structure is simple reasonable, the reliability is high, causes cost improvement and unstable factor increase to lead to the defective rate to improve the scheduling problem after successfully avoiding the circuit to complicate. And the utility model discloses a rectifier bridge converts the voltage signal of input to the voltage signal of fixed direction and has realized the nonpolarity communication, the effectual inconvenient problem of user of having solved. The utility model discloses a plurality of slaves can be connected to single host computer, but single host computer single control corresponds a certain slave moreover, also a plurality of slaves of simultaneous control.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a block diagram of the circuit principle of the present invention.

Fig. 2 is a circuit connection diagram of the host sending data module of the present invention.

Fig. 3 is a circuit diagram of a slave receiving data module according to the present invention.

Detailed Description

As shown in fig. 1, the present invention provides a master-slave dual-wire non-polar communication circuit, which includes a master sending module and a slave receiving module, and a single master sending module can be connected and controlled with a plurality of slave receiving modules. The host sending and the slave receiving module circuits are only connected with two lines physically, and the two signal lines are connected with no polarity.

As shown in fig. 2, the host data sending module circuit includes a first single chip microcomputer (U1), a first resistor (R1), a second resistor (R2), a first zener diode (ZD 1), an output signal line a, and an output signal line B. An output pin of the first single chip microcomputer outputs a signal and is connected with one end of a first resistor, the other end of the first resistor is connected with one end of a second resistor and one end of the cathode of a first voltage stabilizing diode, the anode end of the first voltage stabilizing diode is grounded GND, the other end of the second resistor is connected with an output signal line B, and the output signal line A is grounded GND. As shown in fig. 3, the slave data receiving module circuit includes a receiving signal line a, a receiving signal line B, a rectifier bridge (D1), a third resistor (R3), a fourth resistor (R4), a second zener diode (ZD 2), and a second single chip microcomputer (U2). The receiving signal line A and the receiving signal line B acquire data sent by the host and are respectively connected to a pin 1 and a pin 2 of the rectifier bridge, a pin 3 of the rectifier bridge is grounded GND, a pin 4 of the rectifier bridge is connected to one end of a fourth resistor, the other end of the fourth resistor is connected to a pin of identification data of the second single chip microcomputer, the third resistor is connected between the pin 3 and the pin 4 of the rectifier bridge in parallel, the pin 3 of the rectifier bridge is grounded GND, one end of the cathode of the second voltage stabilizing diode is connected with the pin of identification data of the second single chip microcomputer, and the other end of the anode of the second voltage. And the first voltage stabilizing diode (ZD 1) and the second voltage stabilizing diode (ZD 2) are used for preventing the circuit from being damaged due to sudden high-voltage inrush into the circuit.

Referring to fig. 1 to fig. 3, the host computer of the present invention sends data module circuit to make the voltage of two communication lines be 5V or make the voltage of two communication lines 0V by controlling the first single chip output signal. The host computer completes the sending of the host computer signal by adjusting the voltage on the communication line. And whether two receiving signal lines of the slave data receiving module are connected in the positive direction or in the reverse direction, the voltage signal sent by the receiving host machine can be converted into a voltage signal in a fixed direction through the rectifier bridge, and then the signal is identified by the second single chip microcomputer to complete the receiving of the slave machine signal.

Claims

1. A novel master-slave double-wire non-polar communication circuit is characterized in that the circuit comprises a master machine data sending module and a slave machine data receiving module, wherein the two module circuits are only connected by two wires physically, and the connection wires are not divided into polarities; the host sending module outputs data signals through the single chip microcomputer to control the voltage of the two signal lines to generate voltage signals, the slave receiving module converts the signals into voltage signals in a fixed direction through the rectifier bridge, and the voltage signals sent by the host are obtained through identification data of the single chip microcomputer, so that communication between the host and the slave is completed.

2. The novel master-slave two-wire non-polar communication circuit as claimed in claim 1, wherein the circuit diagram has a master and a slave.

3. The novel master-slave two-wire non-polar communication circuit as claimed in claim 1, wherein the circuit diagram has a single master capable of controlling multiple slaves in communication simultaneously.

4. The novel master-slave two-wire non-polar communication circuit as claimed in claim 1, wherein the circuit diagram has a connection polarity of the master and the slave.

5. The novel master-slave two-wire non-polar communication circuit according to claim 1, wherein the circuit diagram has a host computer controlling the output port of the single chip microcomputer so as to control the voltage between the two-wire communication wires.

6. The novel master-slave two-wire non-polar communication circuit as claimed in claim 1, wherein the circuit diagram slave machine obtains the voltage between the two-wire communication wires through the conversion of the rectifier bridge, then the voltage is identified through the input port of the single chip microcomputer, and the level change is read by the slave machine.