KR960043949A - Automatic frequency conversion system transmission and reception system and method - Google Patents

Abstract

The present invention relates to a transmission and reception system and a method for use in a wireless remote control device such as a concrete pump car, hydraulically driven crane, ceiling crane, and more particularly, multiplexing the radio frequency of the main carrier used in one system, and multiple channels The present invention relates to a transmission / reception system and method of an automatic frequency conversion method capable of transmitting control data in the best state by automatically changing a communication path by searching for a channel free of interference.

This system is provided with a plurality of communication channels, and has the effect of improving the transmission and reception state of data by automatically searching the state of each channel when transmitting data to find the optimal channel and transmit the data. In addition, there is an advantage in that the convenience of use can be achieved since the entire operation until the data transmission is performed by searching for a channel free of noise.

Description

Automatic frequency conversion system transmission and reception system and method

As this is a public information case, the full text was not included.

1 is a block diagram showing a configuration of a transmitter in a transmission and reception system according to the present invention, and FIG. 2 is a block diagram showing a schematic configuration of a receiver in a transmission and reception system according to the present invention.

Claims (5)

A transmission / reception system of an automatic frequency conversion method used in a wireless remote control apparatus, comprising: detecting means for detecting the presence or absence of a noise component in each channel and transmitting the same to a first microprocessor; A transmitter having a first microprocessor for controlling a frequency modulator, and transmission means for sending control data to an optimum channel according to a control command of the first microprocessor; And a second microprocessor which receives and analyzes a control signal of the transmitter and controls the receiving means to receive a signal radiated from the transmitting means in an optimal state, and a receiving channel according to a control command of the second microprocessor. And a receiver having a receiving means for changing a frequency to have a frequency equal to a frequency of an optimal channel of the transmitter. The microprocessor of claim 1, wherein the transmission means comprises: a VCO unit generating an oscillation frequency by changing a voltage by the first microprocessor, and the first microprocessor so as to be loaded on a radio frequency selected according to an oscillation frequency of the VCO unit And a PLL unit for converting the generated digital data into an analog transmission signal and transmitting it to an RF unit, and an RF unit for carrying the signal wave transmitted from the PLL unit on a carrier wave and propagating to the air through an antenna at a selected radio frequency. Transmission and reception system of automatic frequency conversion method. The RF receiver of claim 1, wherein the receiving unit detects a signal wave from a selected radio frequency by tracing an RF unit for waveform-shaping the transmission signal received through an antenna and a frequency of a carrier wave according to the oscillation frequency of the RF unit signal. And a PLL unit for transmitting the detected signal to the second microprocessor, and a VCO unit for applying an oscillation frequency by adjusting a voltage to the PLL unit. A method of transmitting and receiving an automatic frequency conversion method for implementing wireless remote control, the method comprising: searching and determining a noise-free channel among multiplexed channels during a communication operation of a transmitter; Transmitting information about a found noise-free channel to a control channel and transmitting the information to a receiver; Analyzing a signal transmitted from a transmitting side and changing a communication channel of the receiver to the found optimal channel; Initiating communication to transmit and receive data; And after the communication ends, the receiver returns to the reception standby state. [5] The automatic frequency conversion method of claim 4, further comprising the step of confirming the connection between the step of changing the communication channel and the step of transmitting / receiving, by sending and receiving a response signal from the reception-ready receiving side to the communication channel. How to send and receive ※ Note: The disclosure is based on the initial application.