CN201750525U - FSK numerically-controlled dual-frequency wireless microphone system - Google Patents
FSK numerically-controlled dual-frequency wireless microphone system Download PDFInfo
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- CN201750525U CN201750525U CN2010202473308U CN201020247330U CN201750525U CN 201750525 U CN201750525 U CN 201750525U CN 2010202473308 U CN2010202473308 U CN 2010202473308U CN 201020247330 U CN201020247330 U CN 201020247330U CN 201750525 U CN201750525 U CN 201750525U
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Abstract
The utility model discloses an FSK (Frequency Shift Keying) numerically-controlled dual-frequency wireless microphone system, which comprises a wireless microphone and a receiver, wherein a transmitter module is mounted in the wireless microphone; a receiver module is arranged in the receiver; and the transmitter module and the receiver module are in communication connection through two independent propagation channels: an FM modulation channel for transmitting analog voice frequency signals and an FSK modulation channel for transmitting interaction control information. The utility model, which is stable in control and fast in speed, can replace traditional wireless microphone systems.
Description
Technical field
The utility model relates to a kind of wireless microphone system, particularly a kind of FSK numerical control double-frequency wireless microphone system.
Background technology
Generally adopt in the current wireless microphone industry and in acoustic channel, be written into pilot signal and realize information interaction between the Receiver And Transmitter.Pilot tone in the wireless microphone industry is divided into two kinds: a, common pilot tone, and promptly the pilot signal of carrier wave on communication channel has only two kinds of signals of high-low level; B, digital pilot tone, promptly on acoustic channel, be written into certain the coding situation digital signal.These two kinds of pilot tone modes all have very big defective place on practice.When adopting common pilot tone, owing to have only two states-high level/low level or On/Off, so receiver can't be discerned this pilot signal from that transmitter.When adopting digital pilot tone, speed is slow, and is big in the scope of 250bit/s, and communication stability is very poor.Except above said several shortcomings, two other fatal shortcoming of pilot tone interactive mode is that pilot tone is that one-way communication and pilot filtering lose the wireless microphone sound quality greatly.In frequency was corresponding mutual, because the one-way of pilot tone, the receiver respective frequencies generally adopted the method for infrared transmission to transmitter, but infrared transmission has directivity, and distance is not long, and there is unsurmountable defective in this infrared ray to the method for frequency.
FSK(frequency shift keying) be a kind of communication mode that uses in the data communication early.Because this modulation demodulation system realizes easily, have advantages such as antijamming capability is strong, long transmission distance, therefore in middle low speed data transport communication system, obtained using comparatively widely.According to the suggestion of International Telegraph and Telephone Co (ITU-T), transmission rate is that the following equipment of 1200 bauds generally adopts the FSK mode to transmit data.In addition, the FSK communication mode is widely adopted in daily life and Industry Control, for example in CID (Calling Identity Delivery) caller identification, the Modem of low speed, also be extensive use of him in the carrier communication of the railway system and electric power system and transmit various control informations, but just present, the FSK communication technology is applied in the wireless microphone industry and does not also occur.
Summary of the invention
In order to address the above problem, the utility model provides a kind of FSK of application communication technology to carry out numerical control double-frequency wireless microphone system frequently, and this system's control stabilization, speed are fast, can replace traditional wireless microphone system.
The utility model is that the technical scheme that its problem of solution is adopted is:
A kind of FSK numerical control double-frequency wireless microphone system, comprise wireless microphone and receiver, in the described wireless microphone transmitter module is installed, be provided with receiver module in the described receiver, transmitter module and receiver module by two independently propagation channel communicate and be connected, described propagation channel comprises FM modulation channel that is used for the transportation simulator audio signal and the FSK modulation channel that is used to transmit mutual control information.
Wherein, described FM modulation channel is by the simplex channel of transmitter module to receiver module transportation simulator audio signal.
Described FSK modulation channel is a half-duplex channel.
The utility model adopt two fully independently propagation channel (double frequency) transmitter module is communicated with receiver module be connected, to frequency the time, receiver module transmits new frequency data to transmitter module by the FSK modulation channel, transmitter module is after receiving new frequency data on the FSK modulation channel, again upgrade the carrier frequency on the FM modulation channel, make it corresponding with receiver module, because it is strong that FSK communication has an antijamming capability, advantages such as long transmission distance, therefore this to frequency mode control stabilization, speed is fast, infrared relatively for the frequency mode, it does not have the restriction of distance, there is not the restriction on the direction yet, can replace traditional infraredly to the frequency mode, be initiative in the wireless microphone industry.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is a composition module frame chart of the present utility model;
Fig. 2 is the hardware structure diagram of a kind of embodiment of the utility model.
Embodiment
See figures.1.and.2, a kind of FSK numerical control double-frequency wireless microphone system of the present utility model, comprise wireless microphone 1 and receiver 2, in the described wireless microphone 1 transmitter module 3 is installed, be provided with receiver module 4 in the described receiver 2, transmitter module 3 and receiver module 4 by two independently propagation channel communicate and be connected, described propagation channel comprises FM modulation channel 5 that is used for the transportation simulator audio signal and the FSK modulation channel 6 that is used to transmit mutual control information.As shown in Figure 2, after the user starts wireless microphone system, receiver module 4 in the receiver 2 transmits new frequency data to the transmitter module 3 of wireless microphone 1 by FSK modulation channel 6, transmitter module 3 is after receiving new frequency data on the FSK modulation channel 6, again upgrade the carrier frequency on the FM modulation channel 5, make it corresponding with receiver module 4, communication is between the two set up, and the simulated audio signal of wireless microphone 1 just can be by FM modulation channel 5 to receiver module 4 transmission.
Because the transmission course of simulated audio signal is unidirectional, so FM modulation channel 5 can preferably be set to by the simplex channel of transmitter module to receiver module transportation simulator audio signal.In addition, with FSK the characteristics of communicating by letter are frequently adapted, FSK modulation channel 6 preferably is set to half-duplex channel, and the mutual control information between transmitter module 3 and the receiver module 4 can be carried out transmitted in both directions.
The utility model can overcome the poor stability of conventional wireless microphone system, slow-footed shortcoming, and its to the frequency mode not the recipient to the restriction of distance, so it can replace traditional wireless microphone system, has good marketing prospect.
Claims (3)
1. FSK numerical control double-frequency wireless microphone system, comprise wireless microphone (1) and receiver (2), it is characterized in that being equipped with in the described wireless microphone (1) transmitter module (3), be provided with receiver module (4) in the described receiver (2), transmitter module (3) and receiver module (4) by two independently propagation channel communicate and be connected, described propagation channel comprises FM modulation channel (5) that is used for the transportation simulator audio signal and the FSK modulation channel (6) that is used to transmit mutual control information.
2. a kind of FSK numerical control double-frequency wireless microphone system according to claim 1 is characterized in that described FM modulation channel (5) is by the simplex channel of transmitter module to receiver module transportation simulator audio signal.
3. a kind of FSK numerical control double-frequency wireless microphone system according to claim 1 is characterized in that described FSK modulation channel (6) is a half-duplex channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202473308U CN201750525U (en) | 2010-07-05 | 2010-07-05 | FSK numerically-controlled dual-frequency wireless microphone system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202473308U CN201750525U (en) | 2010-07-05 | 2010-07-05 | FSK numerically-controlled dual-frequency wireless microphone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201750525U true CN201750525U (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010202473308U Expired - Fee Related CN201750525U (en) | 2010-07-05 | 2010-07-05 | FSK numerically-controlled dual-frequency wireless microphone system |
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| CN (1) | CN201750525U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313158A (en) * | 2012-03-07 | 2013-09-18 | 佳乐电子股份有限公司 | System and method for wireless microphone frequency alignment |
| CN104349247A (en) * | 2014-10-28 | 2015-02-11 | 张炳翔 | Wireless microphone system based on RDS (Radio Data System) data communication |
| CN106454569A (en) * | 2016-11-11 | 2017-02-22 | 广州东文信息科技有限公司 | Digital bi-directional automatic variable-frequency wireless microphone and system |
-
2010
- 2010-07-05 CN CN2010202473308U patent/CN201750525U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313158A (en) * | 2012-03-07 | 2013-09-18 | 佳乐电子股份有限公司 | System and method for wireless microphone frequency alignment |
| CN104349247A (en) * | 2014-10-28 | 2015-02-11 | 张炳翔 | Wireless microphone system based on RDS (Radio Data System) data communication |
| CN104349247B (en) * | 2014-10-28 | 2018-05-08 | 张炳翔 | A kind of wireless microphone system based on RDS data communications |
| CN106454569A (en) * | 2016-11-11 | 2017-02-22 | 广州东文信息科技有限公司 | Digital bi-directional automatic variable-frequency wireless microphone and system |
| CN106454569B (en) * | 2016-11-11 | 2022-10-25 | 广州东文信息科技有限公司 | Digital bidirectional automatic frequency conversion wireless microphone and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20150705 |
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| EXPY | Termination of patent right or utility model |