Wireless transmitting system and achievement method of wireless transmitting system

Abstract

The invention provides a wireless transmitting system and an achievement method of the wireless transmitting system. The wireless transmitting system comprises a tour guide instrument and a tourist tour guide instrument. The tour guide instrument is internally composed of a frequency modulation transmitter and an FM grouping device. The FM grouping device internally comprises a wireless communication module and used for transmitting a compulsively-set frequency signal to the tourist tour guide instrument through the wireless communication module. The tourist tour guide instrument is internally composed of a frequency modulation receiver and a wireless communication module. The wireless communication module in the tourist tour guide instrument is used for receiving the compulsively-set frequency signal transmitted from the FM grouping device to set the corresponding frequency of the frequency modulation receiver. According to the wireless transmitting system and the achievement method, the FM grouping device is additionally arranged in the frequency modulation transmitter used by a tour guide, when the frequency modulation receiver can not receive the signal of the frequency modulation transmitter, the frequency of the frequency modulation transmitter is broadcasted regularly through the wireless communication modules, the frequency of the frequency modulation receiver can be automatically or manually changed, and a tourist can receive the new signal of the frequency modulation transmitter of the tour guide and hear explanations of the tour guide.

Description

[0001] technical field [0002] The present invention relates to the technical field of wireless communication, in particular to a wireless transmission system and its realization method. [0003] Background technique [0004] FM transmitter: first modulate the audio signal and high-frequency carrier into FM wave, so that the frequency of the high-frequency carrier changes with the audio signal, and then amplify, excite, power amplifier and a series of impedance matching for the generated high-frequency signal, A device that causes a signal output to be sent out by an antenna. High-frequency signals are produced by frequency synthesis, PLL, etc. The frequency range of commercial FM broadcasting in my country is 88-108MHZ, 76-87MHZ in campuses, and 70-90MHZ in western countries. [0005] FM receiver: a radio with better signal quality, capable of stereo reception, because the radio wave is transmitted in a straight line, so the short propagation distance is the biggest s...

AI Technical Summary

Problems solved by technology

[0007] However, due to the limited coverage of the FM transmitter, when the distance between the tourist and the tour guide reaches a certain distance, the tourist cannot receive the FM transmitter signal of the tour guide, that is, cannot hear the tour guide's explanation, and the tourist becomes a so-called tourist guide. fall behind

When another tour guide approaches, the frequency of the FM receiver used by the laggard tourist is inconsistent with the frequency of the FM transmitter on the tour guide, and the tour guide does not know the frequency of the FM transmitter used by the tour guide, that is, they cannot listen to the tour guide's explanation

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