Circuit structure of short-distance one-way power supply reverse communication

Abstract

The invention discloses a circuit structure of short-distance one-way power supply reverse communication. The circuit structure comprises a direct current power supply, a host, a slave, a first triode, a first resistor, a second resistor, a third resistor, a fourth resistor, an energy-storing capacitor, a diode and a switch module, wherein the third resistor and the fourth resistor are used for current limiting. According to the circuit structure of the short-distance one-way power supply reverse communication provided by the invention, short-distance one-way communication between terminals iscompleted by utilizing extremely few electronic components and power lines, so that the cost and energy are saved, the interference during communication can be reduced, and the communication becomesvery simple.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a short-distance one-way power supply reverse communication circuit structure. Background technique [0002] The working method that can only send signals in one direction but not reverse communication is called simplex communication, such as a broadcasting station broadcasting information to the outside; the working method that can achieve two-way communication between the two communicating parties is called duplex communication, such as a walkie-talkie. Among these communication methods, the distance between the two communicating parties is within tens of meters, which is called short-distance communication. Due to the relationship between function realization, there are many short-distance simplex communication applications in life and work, such as the data acquisition terminal transmits information to the data processing terminal, the control panel terminal sends signals t...

AI Technical Summary

Problems solved by technology

However, the use of wireless communication technology for data transmission has disadvantages such as high cost, unstable transmission, high power consumption, and high requirements for the surrounding environment; and it is necessary to add wireless communication devices and antennas to the equipment; commonly used short-distance wired communication technology usually requires low-voltage The power supply supplies power to the terminal, and the master-slave modules need to be connected with power lines, ground wires and transmission lines, so as to ensure the normal operation of the terminal and the normal communication between the terminals; there are also lengthy interconnection cables that greatly increase the overall The cost of the system; power line communication (PLC) uses power lines to communicate, and it transmits the modulated high-frequency signal on the power line with current as the carrier, and is sent to the terminal after being filtered and demodulated at the receiving end. PLC communication has transmission It has the advantages of large amount of information, fast transmission speed, and two-way communication, but the cost is extremely high. Communication with a small amount of transmitted data and short distances does not require the powerful functions of PLC communication. If PLC communication is used, it will inevitably result in waste of cost.

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