A RF transceiver hardware structure for implementing bidirectional communication and relay function

Abstract

The invention discloses a hardware structure of a radio frequency transceiver, realizing two-way communication and relay functions. A single chip microcomputer ATMEGA16L-8AI is connected with a radio frequency wireless module through a slot interface CON11 and realizes the receiving or transmission of a radio frequency signal through the setting of RX or TX working mode of the module. The equipment address of the radio frequency communication is of 8-bit; wherein, the former 4-bit is of the equipment type address and is set by the software; while, the last 4-bit is of the equipment address and is set by the read dial switch state of the single chip microcomputer. The single chip microcomputer realizes the radio frequency control or relay function through the slot interface CON2 by the short connection or disconnection of the two pins of the slot with a jumper. The invention simultaneously realizes the radio frequency wireless module protocol of the radio frequency transceiver and the RS485 network protocol. With the adoption of a plurality of slots with corresponding sockets, the invention accesses or extends the function module by a plug-in type, which is easy and feasible and is able to realize the procedure downloading to update the processs of the microprocessor.

Description

Technical field [0001] The present invention relates to a network communication technology, in particular to a radio frequency transceiver with two-way communication and relay functions based on ATMEGA16L-8AI single-chip microcomputer. Background technique [0002] RS485 network is a serial communication method with strong anti-interference ability and suitable for long-distance transmission. Because of its simple structure, low price, convenient use, appropriate communication distance and data transmission rate, and high reliability, it is widely used in instruments. Fields such as instrumentation, intelligent sensor distributed control, intelligent building, monitoring and alarm, railway communication and power data collection. RS-485 is developed on the basis of RS-422 and RS-232, which can realize point-to-multipoint communication and multipoint two-way communication, but there can only be one transmitter at the same time, and the rest are receivers. Device, that is, one-mast...

AI Technical Summary

Problems solved by technology

[0005] At present, the radio frequency transceiver used in the wireless smart home system, the smart central controller can directly control wireless devices within 50m, such as wireless switches for indoor lights, TVs, air conditioners, VCDs, etc., but as the distance increases, the control signal It will attenuate, so that the control ability is reduced or even invalid, thereby reducing the communication efficiency and the reliability of the control signal

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