Method, device and system for fixing position of mobile terminal
A mobile terminal, source device technology, applied in transmission systems, radio wave measurement systems, ultrasonic/sonic/infrasonic transmission systems, etc., can solve the problem of narrow application range, location of mobile terminals is not cost-effective, and Bluetooth devices and equipment are expensive. and other problems to achieve the effect of easy promotion and use
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[0026] According to the present invention, multiple acoustic wave signal source devices can be arranged in the area where the mobile terminal needs to be located, and each acoustic wave signal source device is assigned a specific code. The code has a one-to-one correspondence with the location of the corresponding acoustic wave signal source device, and the relationship is known in advance by the mobile terminal or the server. Each sound wave signal source device continuously or periodically transmits a sound wave signal of a specific frequency modulated by the code. The mobile terminal receives the sound wave signal emitted by a certain sound wave signal source device at a certain point, and demodulates the sound wave signal to obtain the sound wave signal. The code corresponding to the source device. The mobile terminal or server parses out the position of the sound wave signal source device according to the code, and considers that the position of the mobile terminal is loca...
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