CN103731163B - A kind of wireless transmitting system - Google Patents
A kind of wireless transmitting system Download PDFInfo
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- CN103731163B CN103731163B CN201310719648.XA CN201310719648A CN103731163B CN 103731163 B CN103731163 B CN 103731163B CN 201310719648 A CN201310719648 A CN 201310719648A CN 103731163 B CN103731163 B CN 103731163B
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Abstract
The invention provides a kind of wireless transmitting system and its implementation, this system includes: a guide instrument, visitor's guide instrument, organized into groups device by a frequency modulation transmitter and a FM in described guide instrument to form, comprise a wireless communication module in described FM marshalling device, force setpoint frequency signal to visitor's guide instrument for being sent by wireless communication module；Being made up of a FM receiver and a wireless communication module in described visitor's guide instrument, in described visitor's guide instrument, wireless communication module is for receiving the pressure setpoint frequency signal that FM marshalling device sends over, and sets FM receiver respective frequencies.The present invention organizes into groups device by increasing by a FM in the frequency modulation transmitter that guide uses, when FM receiver does not receives frequency modulation transmitter signal, wireless communication module is utilized to carry out the frequency of fixed time broadcast frequency modulation transmitter, can be with the frequency of automatic or manual amendment FM receiver, make visitor can receive new guide's frequency modulation transmitter signal, allow visitor hear the explanation of guide.
Description
Technical field
The present invention relates to wireless communication technique field, particularly relate to a kind of wireless transmitting system and its implementation.
Background technology
Frequency modulation transmitter: first audio signal and high frequency carrier are modulated to frequency-modulated wave, the frequency making high frequency carrier changes with audio signal, then is amplified produced high-frequency signal, excitation, power amplifier and a series of impedance matching, make signal export the device that antenna sends.High-frequency signal have the modes such as frequency synthesis, PLL, the frequency range of the business frequency modulation broadcasting of China is 88-108MHZ, and campus is 76-87MHZ, and western countries are 70-90MHZ.
FM receiver: a kind of reasonable radio of signal quality, can carry out stereo receiver, because its electric wave is straightline propagation, so, propagation distance is closely maximum shortcoming, is not suitable for receiving telematic radio.
Existing, guide uses the frequency modulation transmitter of a certain frequency to explain, and visitor carries the FM receiver with same frequency of conducting a sightseeing tour on visitor's guide instrument, receives the signal that guide sends, it is thus possible to hear the explanation of guide.One guide carries a tourist group, and by a guide interpreting, the frequency of the frequency modulation transmitter that the guide of different tourist groups uses is different, and two such tourist group will not interfere with each other.
But, because of being limited in scope that frequency modulation transmitter covers, after the distance between visitor and guide reaches certain distance, visitor does not just receive the frequency modulation transmitter signal of guide, i.e. can't hear the explanation of guide, visitor so-called fall behind.When there being another guide to walk close to, tourist left behind uses FM reception unit frequency inconsistent with the frequency of the frequency modulation transmitter on this guide, and does not knows that this guide uses FM transmission unit frequency, i.e. cannot this explanation conducted a sightseeing tour of uppick.
Summary of the invention
It is an object of the invention to provide a kind of wireless transmitting system and its implementation, after falling behind with solution visitor, the frequency of the FM receiver on visitor's guide instrument of automatic or manual change visitor, makes tourist left behind can receive the frequency modulation transmitter signal of other guides.
It is an object of the invention to be achieved through the following technical solutions.
A kind of wireless transmitting system, including: a guide instrument, visitor's guide instrument,
Organized into groups device by a frequency modulation transmitter and a FM in described guide instrument to form,
Comprise a wireless communication module in described FM marshalling device, force setpoint frequency signal to visitor's guide instrument for being sent by wireless communication module；
It is made up of a FM receiver and a wireless communication module in described visitor's guide instrument,
In described visitor's guide instrument, wireless communication module is for receiving the pressure setpoint frequency signal that FM marshalling device sends over, and sets FM receiver respective frequencies.
It is further preferred that described FM marshalling device is additionally operable to the frequency that broadcast modulation transmitter sets at set intervals.
It is further preferred that guide's voice signal is launched by antenna by described frequency modulation transmitter for setting a frequency.
It is further preferred that described FM receiver is for setting respective frequencies to receive guide's voice signal that frequency modulation transmitter sends according to the broadcasting frequency signal received.
It is further preferred that described FM receiver is additionally operable to detect the signal intensity of frequency modulation transmitter, and judging whether transmitting range exceeds transmitting range, as exceeded, visitor's guide instrument closes FM reception state.
It is further preferred that wireless communication module is additionally operable to receive the frequency whether having other frequency modulation transmitters to broadcast near inquiry in described visitor's guide instrument, if any then arranging corresponding frequency, as the most then continued waiting for inquiry.
It is further preferred that described wireless communication module uses ZigBee wireless module, bluetooth radio module or WIFI wireless module to realize.
A kind of implementation method of wireless transmitting system, including step:
A: frequency modulation transmitter is set a frequency and is launched by antenna by guide's voice signal；
B: the signal intensity of FM reception machine testing frequency modulation transmitter, and judge that transmitting range closes visitor's guide instrument FM reception state after exceeding frequency modulation transmitter transmitting range；
C: in visitor's guide instrument, wireless communication module receives the frequency of neighbouring other frequency modulation transmitters broadcast, and FM receiver is modified as its corresponding broadcasting frequency.
It is further preferred that also include between step a and step b: the frequency that FM marshalling device broadcast modulation transmitter at set intervals sets；FM receiver sets respective frequencies to receive guide's voice signal that frequency modulation transmitter sends according to the broadcasting frequency signal received.
If it is further preferred that wireless communication module does not receives the frequency of neighbouring other frequency modulation transmitters broadcast in visitor's guide instrument in step c, then continuing waiting for inquiry.
The present invention is compared with prior art, have the beneficial effects that: the wireless transmitting system of present invention offer and its implementation, device is organized into groups by increasing by a FM in the frequency modulation transmitter that guide uses, when FM receiver does not receives frequency modulation transmitter signal, wireless communication module is utilized to carry out the frequency of fixed time broadcast frequency modulation transmitter, visitor can be made to receive new guide's frequency modulation transmitter signal with the frequency of automatic or manual amendment FM receiver, allows visitor hear the explanation of guide.
Accompanying drawing explanation
Fig. 1 is wireless transmitting system theory diagram of the present invention；
Fig. 2 is wireless transmitting system implementation method flow chart of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to shown in Fig. 1, the wireless transmitting system that the present invention provides, including:
One guide instrument, visitor's guide instrument,
Organized into groups device by a frequency modulation transmitter and a FM in guide instrument to form,
Guide's voice signal is launched by antenna by frequency modulation transmitter for setting a frequency.
A wireless communication module is comprised, the frequency set for broadcast modulation transmitter at set intervals in FM marshalling device.
Further, FM marshalling device is additionally operable to be sent by wireless communication module force setpoint frequency signal to visitor's guide instrument.
Preferably, wireless communication module can use other wireless communication modules such as ZigBee wireless module, bluetooth radio module, WIFI wireless module all can realize.
It is made up of a FM receiver and a wireless communication module in visitor's guide instrument,
FM receiver is for setting respective frequencies to receive guide's voice signal that frequency modulation transmitter sends according to the broadcasting frequency signal received.
Wireless communication module, for receiving the pressure setpoint frequency signal that FM marshalling device sends over, sets FM receiver respective frequencies.
Further, FM receiver is additionally operable to detect the signal intensity of frequency modulation transmitter, when the signal intensity of detection is the lowest or does not has, then judges the distance that the distance of frequency modulation transmitter transmits beyond frequency modulation transmitter, and visitor's guide instrument closes FM reception state.
Further, in visitor's guide instrument, wireless communication module is additionally operable to receive the frequency whether having other frequency modulation transmitters to broadcast near inquiry, if any then arranging corresponding frequency, as the most then continued waiting for inquiry.
Preferably, wireless communication module can use other wireless communication modules such as ZigBee wireless module, bluetooth radio module, WIFI wireless module all can realize.
Embodiment:
Frequency modulation transmitter sets a certain frequency, and guide uses microphone to talk, transmits signal by frequency modulation transmitter.Visitor's guide instrument after powering, is not provided with any frequency, it is impossible to hear any sound, needs FM receiver to set respective frequencies according to the broadcasting frequency signal received.After visitor's guide instrument sets frequency, the sound of guide can be listened to.Guide just can be explained by the microphone on frequency modulation transmitter, and visitor can hear the sound of guide with the earphone on visitor's guide instrument.
Visitor's guide instrument can detect the signal intensity of frequency modulation transmitter always after setting frequency, when the signal intensity of detection is the lowest or does not has, then judge the distance that the distance of frequency modulation transmitter and visitor's guide instrument transmits beyond frequency modulation transmitter, then visitor's guide instrument closes FM reception state.Visitor's guide instrument is used ZigBee wireless module instead and is received the frequency whether having other frequency modulation transmitters to broadcast near inquiry, if any then arranging corresponding frequency, as the most then continued waiting for inquiry.
When the ZigBee wireless module of visitor's guide instrument receive pressure signal is set time, then FM receiver can be modified as its corresponding frequency.This function can be with the frequency of the frequency modulation transmitter on manual modification visitor's guide instrument, it is also possible to the defect that solution tourist left behind receives multiple guide's FM transmission unit frequency simultaneously and cannot select.
Refer to shown in Fig. 2, wireless transmitting system implementation method of the present invention, including:
Step 201: frequency modulation transmitter is set a frequency and launched by antenna by guide's voice signal；
The frequency that step 202:FM marshalling device broadcast modulation transmitter at set intervals sets；
Step 203: FM receiver sets respective frequencies to receive guide's voice signal that frequency modulation transmitter sends according to the broadcasting frequency signal received；
Step 204: the signal intensity of FM reception machine testing frequency modulation transmitter, and judge whether transmitting range exceeds transmitting range, if it is, enter step 205；Otherwise, terminate；
Specifically, when the signal intensity of detection is the lowest or does not has, then judge the distance that the distance of frequency modulation transmitter and visitor's guide instrument transmits beyond frequency modulation transmitter.
Step 205: in visitor's guide instrument, wireless communication module receives the frequency whether having other frequency modulation transmitters to broadcast near inquiry；If it is, enter step 206；Otherwise, inquiry is continued waiting for；
Step 206: FM receiver is modified as its corresponding broadcasting frequency.
The wireless transmitting system of present invention offer and its implementation, device is organized into groups by increasing by a FM in the frequency modulation transmitter that guide uses, when FM receiver does not receives frequency modulation transmitter signal, wireless communication module is utilized to carry out the frequency of fixed time broadcast frequency modulation transmitter, can be with the frequency of automatic or manual amendment FM receiver, make visitor can receive new guide's frequency modulation transmitter signal, allow visitor hear the explanation of guide.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (4)
1. a wireless transmitting system, including: a guide instrument, visitor's guide instrument, it is characterised in that
Organized into groups device by a frequency modulation transmitter and a FM in described guide instrument to form,
Comprise a wireless communication module in described FM marshalling device, force for being sent by wireless communication module
Setpoint frequency signal is to visitor's guide instrument；
It is made up of a FM receiver and a wireless communication module in described visitor's guide instrument,
The pressure that in described visitor's guide instrument, wireless communication module sends over for receiving FM marshalling device sets
Frequency signal, sets FM receiver respective frequencies,
Described FM marshalling device is additionally operable to the frequency that broadcast modulation transmitter sets at set intervals；
Described FM receiver is additionally operable to detect the signal intensity of frequency modulation transmitter, and whether judges transmitting range
Beyond transmitting range, as exceeded, visitor's guide instrument closes FM reception state；
In described visitor's guide instrument, wireless communication module is additionally operable to receive near inquiry whether have other FM transmission
The frequency of machine broadcast, if any then arranging corresponding frequency, as the most then continued waiting for inquiry.
2. wireless transmitting system as claimed in claim 1, it is characterised in that described frequency modulation transmitter is used for
Set a frequency to be launched by antenna by guide's voice signal.
3. wireless transmitting system as claimed in claim 1, it is characterised in that described FM receiver is used for
Guide's voice letter that respective frequencies sends is set to receive frequency modulation transmitter according to the broadcasting frequency signal received
Number.
4. the wireless transmitting system as described in any one of claim 1-3, it is characterised in that described channel radio
Letter module uses ZigBee wireless module, bluetooth radio module or WIFI wireless module to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719648.XA CN103731163B (en) | 2013-12-24 | 2013-12-24 | A kind of wireless transmitting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310719648.XA CN103731163B (en) | 2013-12-24 | 2013-12-24 | A kind of wireless transmitting system |
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| Publication Number | Publication Date |
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| CN103731163A CN103731163A (en) | 2014-04-16 |
| CN103731163B true CN103731163B (en) | 2016-08-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579371A (en) * | 2015-01-26 | 2015-04-29 | 深圳市元征科技股份有限公司 | Frequency modulation transmitter used for wireless tour conductor explanation and method for broadcasting tour conductor explanation words |
| CN111092684A (en) * | 2018-10-23 | 2020-05-01 | 成都共同进步信息技术有限公司 | Automatic frequency selection control system in frequency modulation transmission and reception and use method thereof |
| CN110418224A (en) * | 2019-08-29 | 2019-11-05 | 杜春生 | A kind of distributed tones acoustic system |
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| US8774860B2 (en) * | 2005-04-05 | 2014-07-08 | Nokia Corporation | Method and device for low-power FM transmission of audio data to RDS capable FM radio receiver |
| CN100365940C (en) * | 2005-05-01 | 2008-01-30 | 杨如祥 | Tourist communication device and its communication method |
| CN101178867A (en) * | 2006-11-09 | 2008-05-14 | 上海真灼电子技术有限公司 | Electronic tour guide system used for tour community |
| CN203086737U (en) * | 2012-08-31 | 2013-07-24 | 天津顺德文博科技有限公司 | 256 channel wireless broadcast partition explanation system |
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| CN2442456Y (en) * | 2000-10-16 | 2001-08-08 | 四川省广播电视科研所 | Controller for receiving modulation frequency signal |
| CN2496192Y (en) * | 2001-08-03 | 2002-06-19 | 叶新民 | Radio tourist guider |
| CN1700622A (en) * | 2005-06-23 | 2005-11-23 | 倚天资讯股份有限公司 | Method for searching available frequency band used in digital broadcast receiving and retransmitting device |
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