Infrared full duplex intercom circuit

Abstract

The invention discloses an infrared full duplex intercom circuit which comprises an infrared emission circuit and an infrared receiving circuit, wherein the infrared emission circuit comprises a microphone, resistors from 1 to 12, capacitors from 1 to 8, a first chip, a second chip, a triode, an infrared emitting diode and a first switch; the second resistor is a slide rheostat; the infrared receiving circuit comprises a photoelectric triode, resistors from 13 to 22, capacitors from 9 to 19, a third chip, a fourth chip, a fifth chip, a loudspeaker and a second switch. The infrared emission circuit and the infrared receiving circuit work simultaneously, so that voice sending and voice receiving cannot be affected with each other; the operation is simple, and the transmission distance can be 100 meters; electromagnetic interference can be effectively prevented; the infrared full duplex intercom circuit is extremely high in confidentiality and can be suitable for multiple fields; the circuit is simple in structure, low in cost and favorable for popularization and execution.

Description

technical field [0001] The invention relates to a walkie-talkie circuit, in particular to an infrared full-duplex walkie-talkie circuit. Background technique [0002] With the development of the economy and the progress of the society, the public walkie-talkie has been widely used, which has improved people's work efficiency. The radio walkie-talkie has become a communication tool that people like and rely on just like the wired telephone. Among them, restaurants, travel agencies, construction, fleets, supermarkets, etc. all purchase it as office equipment. Radio walkie-talkies have been widely used in people's lives and work. Generally, wireless walkie-talkies work in one direction at the same frequency. The receiver works alternately, that is, it cannot receive the call when it is sending a call, and it cannot send a call when it is receiving a call. If it encounters strong electromagnetic wave interference, it will also affect the communication quality. In mines or some s...

AI Technical Summary

Problems solved by technology

Among them, restaurants, travel agencies, construction, fleets, supermarkets, etc. all purchase it as office equipment. Radio walkie-talkies have been widely used in people's lives and work. Generally, wireless walkie-talkies work in one direction at the same frequency. The receiver works alternately, that is, it cannot receive the call when it is sending a call, and it cannot send a call when it is receiving a call. If it encounters strong electromagnetic wave interference, it will also affect the communication quality. In mines or some specific places, it is necessary to avoid the generation of electric sparks, and the radio walkie-talkie will be blocked. forbidden to use

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