CN102684754B - Bluetooth transmission module and bluetooth device with same - Google Patents
Bluetooth transmission module and bluetooth device with same Download PDFInfo
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- CN102684754B CN102684754B CN201110059500.9A CN201110059500A CN102684754B CN 102684754 B CN102684754 B CN 102684754B CN 201110059500 A CN201110059500 A CN 201110059500A CN 102684754 B CN102684754 B CN 102684754B
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Abstract
The invention discloses a bluetooth transmission module and a bluetooth device. The module comprises a bluetooth signal processing sub-module, an oscillator module, a down-conversion sub-module for transforming a fast hopping frequency signal into an intermediate frequency signal according to a slow hopping frequency oscillator signal provided by the oscillator module, an intermediate frequency power amplification sub-module, a selection sub-module, a signal receiving/transmitting module, an intermediate frequency receiving signal processing sub-module, and an up-conversion sub-module for performing slow hopping frequency treatment according to the slow hopping frequency oscillator signal provided by the oscillator module. According to the bluetooth transmission module disclosed by the invention, the additionally arranged oscillator module provides the slow hopping frequency signal for an up-conversion module and a down-conversion module and adds the process of performing slow hopping frequency treatment on the signal, the anti-interference performance of the signal is promoted, the confidentiality is improved, and the working safety and stability of the bluetooth transmission device during the data transmission process are ensured as well. Furthermore, since the signal subjected to the slow hopping frequency treatment is transmitted in an intermediate frequency form, the transmission distance of the module is increased.
Description
Technical field
The present invention relates to communication equipment field, particularly relate to a kind of Bluetooth communication modules and there is the bluetooth equipment of this Bluetooth communication modules.
Background technology
Bluetooth technology is the open global specifications of a kind of wireless data and voice communication, it is based on in-plant wireless connections, set up one with mobile device communication environment be connected especially for fixing, carry out wireless messages exchange comprising between numerous equipment such as mobile phone, PDA, wireless headset, notebook computer, related peripherals.In fact, according to the bluetooth standard concluded, bluetooth also can support telecommunication, makes it have wider application, such as, utilize bluetooth to build radio area network.
Bluetooth is operated in 2.4GHz ISM (Industrial Scientific Medical, industry, science, the medical science) frequency range of global general-use.ISM band is the frequency range all opened all radio systems, therefore uses certain frequency range wherein all can run into uncertain interference source.Such as some household electrical appliances, cordless telephone, garage door opener, microwave oven etc. may be all interference sources.The interference that these interference sources bring directly affects effective application of Bluetooth technology, has influence on fail safe and the accuracy of Signal transmissions between bluetooth equipment.
In order to address this problem, in prior art, Bluetooth communication modules employing hopping scheme guarantees that link is stablized, its frequency hopping is that frequency band is divided into several frequency hopping channels, in once connecting, transmitter module in Bluetooth communication modules constantly jumps to one other channel from a channel by certain code sequence, as long as receiving-transmitting sides, by the communication of this rule, is just difficult to the interference of the interference source being subject to other.
But its jamproof performance cannot adapt to high requirement.
Summary of the invention
In view of this, the invention provides a kind of Bluetooth communication modules and have the bluetooth equipment of this Bluetooth communication modules, to solve the problem that prior art Bluetooth communication modules cannot adapt to higher anti-interference requirement, its concrete scheme is as follows:
A kind of Bluetooth communication modules, comprise: Bluetooth signal process submodule, local oscillator submodule, receive the fast frequency hopping signal that described Bluetooth signal process submodule sends when bluetooth module is in emission state, and according to the slow frequency hopping local oscillation signal that local oscillator submodule provides, described fast frequency hopping signal is converted to the down-conversion submodule of intermediate-freuqncy signal, receive the intermediate-freuqncy signal that described down-conversion submodule sends, and the EF power described intermediate-freuqncy signal amplified amplifies submodule, according to the transmitting channel of chooser model choice, intermediate-freuqncy signal after described amplification is carried out the Signal reception/transmitting submodule sent, be received in described Signal reception/transmitting submodule when bluetooth module is in accepting state receives outer signals received IF signal process submodule according to the receive channel of described chooser model choice, described outer signals is converted to radiofrequency signal and described radiofrequency signal is sent to the up-conversion submodule of described Bluetooth signal process submodule by the slow frequency hopping local oscillation signal provided according to described local oscillator submodule.
Preferably, also comprise: be connected with down-conversion submodule with described Bluetooth signal process submodule respectively, receive the fast frequency hopping signal that described Bluetooth signal process submodule sends, and the radio frequency transmissions process submodule of down-conversion submodule will be sent to after its filtering.
Preferably, also comprise: be connected with described Bluetooth signal process submodule with described up-conversion submodule respectively, receive the radiofrequency signal of described up-conversion submodule transmission and the radio frequency receiving signal processing module of described Bluetooth signal process submodule will be sent to after its filtering.
A kind of bluetooth equipment, comprises Bluetooth communication modules as above.
As can be seen from above-mentioned technical scheme, Bluetooth communication modules disclosed in the embodiment of the present invention, slow frequency hopping signal is provided for up-converter module and down conversion module by the local oscillator module increased, increase the process of signal being carried out to slow frequency hopping process, the signal producing bimodulus frequency hopping communicates, and improves the anti-interference of signal, can meet higher interference free performance requirement, improve confidentiality simultaneously, ensure that the safety and stability that Bluetooth transmission equipment works in data transmission procedure.
Further, Bluetooth communication modules disclosed in the embodiment of the present invention is due to after carrying out slow frequency hopping process by signal, send with intermediate frequency form, make the wavelength sending signal compared with the signal of existing high frequency 2.4GHz, wavelength is longer, better can walk around the barrier in transmitting procedure, improve the transmission range of this module, the requirement of more telecommunication can be adapted to.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of Bluetooth communication modules disclosed by the invention;
Fig. 2 is the communication structure schematic diagram between bluetooth equipment disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention discloses a kind of Bluetooth communication modules, its structure as shown in Figure 1, comprising: Bluetooth signal process submodule 11, down-conversion submodule 12, EF power amplify submodule 13, received IF signal process submodule 14, up-conversion submodule 15, local oscillator submodule 16, chooser module 17 and Signal reception/transmitting submodule 18.Wherein: the function that Bluetooth signal process submodule 11 and intermediate-freuqncy signal received/launched submodule 18 is according to current Bluetooth transport module launches or accepting state and different.
Bluetooth signal process submodule 11 plays the effect that baseband signal and radiofrequency signal are changed mutually, namely fast frequency hopping is carried out, when emission state, baseband signal is converted to radiofrequency signal by Bluetooth signal process submodule 11, and send, down-conversion submodule 12 received RF signal, the slow frequency hopping signal provided according to local oscillator submodule 16 carries out slow frequency hopping process to the radiofrequency signal received, namely, rf frequency and local frequency carry out subtracting each other becoming IF-FRE, change radiofrequency signal into intermediate-freuqncy signal, and send; EF power amplifies submodule 13 and amplifies the intermediate-freuqncy signal received; Chooser module 17 according to current condition selecting transmission channel, Signal reception/transmitting submodule 18 EF power is amplified submodule 13 amplify after the transmission channel selected by chooser module 17 of intermediate-freuqncy signal send to free space.When accepting state, Signal reception/transmitting submodule 18 receives the outer signals in free space according to the receive path that chooser module 17 is selected, received IF signal process submodule 14 processes the outer signals received, intermediate-freuqncy signal is selected from the signal received, the unwanted frequency range of filtering, in order to ensure to select intermediate-freuqncy signal not flooded by noise, intermediate-freuqncy signal is carried out to the amplification of restraint speckle, then up-conversion submodule 15 is provided it to, the slow frequency hopping signal that the intermediate-freuqncy signal of reception provides according to local oscillator submodule 16 is carried out slow frequency hopping process by up-conversion submodule 15, namely, IF-FRE and local frequency are carried out being added becoming rf frequency, intermediate-freuqncy signal is converted to radiofrequency signal, and the radiofrequency signal after conversion is sent to Bluetooth signal process submodule 11, radiofrequency signal is converted to baseband signal by Bluetooth signal process submodule 11.
This shows, Bluetooth communication modules disclosed by the invention provides slow frequency hopping signal by the local oscillator module increased for up-converter module and down conversion module, increase the process of signal being carried out to slow frequency hopping process, the signal producing bimodulus frequency hopping communicates, improve the anti-interference of signal, higher interference free performance requirement can be met, improve confidentiality simultaneously, ensure that the safety and stability that Bluetooth communication modules works in data transmission procedure.
Further, Bluetooth communication modules disclosed in the embodiment of the present invention is due to after carrying out slow frequency hopping process by signal, send with intermediate frequency form, make the wavelength sending signal compared with the signal of existing high frequency 2.4GHz, wavelength is longer, better can walk around the barrier in transmitting procedure, improve the transmission range of this module, the requirement of more telecommunication can be adapted to.
In Bluetooth communication modules disclosed in the present embodiment,
Further, above-mentioned Bluetooth communication modules also comprises: radio frequency transmissions process submodule 19 and radio frequency receiving signal process submodule 110.
Radio frequency transmissions process submodule 19 is arranged between described Bluetooth signal process submodule 11 and down-conversion submodule 12, and is connected with down-conversion submodule 12 with Bluetooth signal process submodule 11.Receive the fast frequency hopping signal that Bluetooth signal process submodule 11 sends, and send to down-conversion submodule 12 by after its filtering, carry out except filtering except to signal, also can carry out the process such as amplification to signal, filtering sends to the clutter in the signal of down conversion module, makes signal better can carry out frequency-conversion processing.
Radio frequency receiving signal process submodule 110 is arranged between Bluetooth signal process submodule 11 and up-conversion submodule 15, receive the radiofrequency signal of described up-conversion submodule 15 transmission and described Bluetooth signal process submodule 11 will be sent to after its filtering, in like manner, the process such as amplification can also be carried out to the signal received, filtering sends to the clutter in the signal of down conversion module, makes signal better can carry out frequency-conversion processing.
Further, the present invention discloses a kind of bluetooth equipment, this bluetooth equipment has Bluetooth communication modules as above.
Owing to have employed the Bluetooth communication modules with local oscillator submodule in this bluetooth equipment, add the process of signal being carried out to slow frequency hopping process, the signal producing bimodulus frequency hopping communicates, improve the anti-interference of signal, improve confidentiality simultaneously, ensure that the safety and stability that bluetooth equipment works in data transmission procedure, further, improve the transmission range of bluetooth equipment, the requirement of more telecommunication can be adapted to.
Figure 2 shows that the schematic diagram carrying out transport communication between bluetooth equipment disclosed by the invention, comprising: the first bluetooth equipment 21 and the second bluetooth equipment 22, the first Bluetooth communication modules 23 and the second Bluetooth communication modules 24 be connected with each bluetooth equipment respectively, the structure of each Bluetooth communication modules as shown in Figure 1.
Suppose that the first bluetooth equipment is in emission state, the second bluetooth module is in accepting state, and the communication process of two equipment rooms is as described below:
Now, first selects module 239 to be in emission state, and second Bluetooth communication modules 24 with bimodulus frequency hopping function is in receiving state signal, and the second chooser module 249 is in accepting state.First Bluetooth communication modules 23 receives the initial data that the first bluetooth equipment 21 sends, and this initial data is the radiofrequency signal being suitable for launching through the first Bluetooth signal process submodule 231 role transformation, and this radiofrequency signal has fast frequency hopping characteristic.First radio frequency transmissions process submodule 232 processes rear feeding first down-conversion submodule 233 to this radiofrequency signal.The local oscillator input signals of the first down-conversion submodule 233 is provided by first oscillator module 238, and this local oscillation signal has slow frequency hopping characteristic.First down-conversion submodule 233 utilizes local oscillation signal to change radiofrequency signal into intermediate-freuqncy signal, and then intermediate-freuqncy signal send into first EF power amplify submodule 234 amplify, after the transmitting channel selected by the first chooser module 239 being in emission state, by the first Signal reception/transmitting submodule 2310, intermediate-freuqncy signal is launched.
Second Bluetooth communication modules 24 receives transmitting of the first Bluetooth communication modules 23 by secondary signal reception/transmitter module 2410, the intermediate-freuqncy signal received by be in receive status second chooser module 249 select receive channel after, process feeding second up-conversion submodule 246 by the second received IF signal process submodule 247.The local oscillation signal with slow frequency hopping characteristic that second up-conversion submodule 246 utilizes the second local oscillator submodule 248 to provide changes intermediate-freuqncy signal into radiofrequency signal, after the second radio frequency receiving signal process submodule 245 process, send into the second Bluetooth signal process submodule 241.The radiofrequency signal received is changed into original data signal by the second Bluetooth signal process submodule 241 sends into the second bluetooth equipment 22.Transmitting procedure from the above mentioned, completes first bluetooth equipment 21 transfer of data to the second bluetooth equipment 22.
If the first bluetooth equipment 21 is in accepting state, second bluetooth equipment 22 is in emission state, in second transport module of then the second bluetooth equipment 22 24 the second radio frequency transmissions process submodule 242, second down-conversion submodule 243 and the second EF power amplification module 244 perform and the first radio frequency transmissions process submodule 232 in the first transport module 23, the process that first down-conversion submodule 233 is identical with the first EF power amplification module 234, realize the transmission of data, and the first radio frequency receiving signal process submodule 235 in the first transport module 23 of the first bluetooth equipment 21, first up-conversion submodule 236 and the first received IF signal process submodule 23 perform and the second radio frequency receiving signal process submodule 245 in the second transport module 24, the function that second up-conversion submodule 246 is identical with the second received IF signal process submodule 247, realize the reception of data.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. a Bluetooth communication modules, it is characterized in that, comprise: for baseband signal and radiofrequency signal being carried out the Bluetooth signal process submodule mutually changed, local oscillator submodule, receive the fast frequency hopping signal that described Bluetooth signal process submodule sends when bluetooth module is in emission state, and according to the slow frequency hopping local oscillation signal that local oscillator submodule provides, described fast frequency hopping signal is converted to the down-conversion submodule of intermediate-freuqncy signal, receive the intermediate-freuqncy signal that described down-conversion submodule sends, and the EF power described intermediate-freuqncy signal amplified amplifies submodule, according to the transmitting channel of chooser model choice, intermediate-freuqncy signal after described amplification is carried out the Signal reception/transmitting submodule sent, be received in the outer signals that described Signal reception/transmitting submodule when bluetooth module is in accepting state receives according to the receive channel of described chooser model choice, and from described outer signals, select the received IF signal process submodule of intermediate-freuqncy signal, the intermediate-freuqncy signal selected in described outer signals is converted to radiofrequency signal and described radiofrequency signal is sent to the up-conversion submodule of described Bluetooth signal process submodule by the slow frequency hopping local oscillation signal provided according to described local oscillator submodule.
2. module according to claim 1, it is characterized in that, also comprise: be connected with down-conversion submodule with described Bluetooth signal process submodule respectively, receive the fast frequency hopping signal that described Bluetooth signal process submodule sends, and the radio frequency transmissions process submodule of down-conversion submodule will be sent to after its filtering.
3. module according to claim 2, it is characterized in that, also comprise: be connected with described Bluetooth signal process submodule with described up-conversion submodule respectively, receive the radiofrequency signal of described up-conversion submodule transmission and the radio frequency receiving signal processing module of described Bluetooth signal process submodule will be sent to after its filtering.
4. a bluetooth equipment, is characterized in that, comprises as the Bluetooth communication modules in claim 1-3 as described in any one.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107465463A (en) * | 2017-09-18 | 2017-12-12 | 贵州航天天马机电科技有限公司 | A kind of means for anti-jamming and method |
| CN109756246B (en) * | 2017-11-02 | 2020-10-27 | 展讯通信（上海）有限公司 | Method and device for inhibiting GSM (global system for mobile communications) from interfering with Bluetooth and mobile terminal |
| CN108521286B (en) * | 2018-03-13 | 2020-04-14 | 深圳飞思通科技有限公司 | Communication method for learning type self-adaptive 2.4G frequency band wireless frequency hopping |
| CN115420944B (en) * | 2022-08-30 | 2023-09-22 | 江苏盛德电子仪表有限公司 | But intelligent ammeter of electric quantity analysis and inquiry based on bluetooth communication |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350370A (en) * | 2000-10-24 | 2002-05-22 | 深圳市中兴通讯股份有限公司 | Transceiver |
| WO2007034133A1 (en) * | 2005-09-26 | 2007-03-29 | Cambridge Silicon Radio Limited | Antenna diversity |
| WO2008074190A1 (en) * | 2006-12-21 | 2008-06-26 | 3Dsp (Beijing) Limited Corporation | Receiving, transmitting method for bluetooth signal and bluetooth transceiver therein |
| CN101425816A (en) * | 2008-09-26 | 2009-05-06 | 中国科学院微电子研究所 | Transceiver for wireless ultra-wideband and method for transceiving signal by transceiver |
| CN101488782A (en) * | 2009-02-26 | 2009-07-22 | 锐迪科微电子（上海）有限公司 | Signal processing method for Bluetooth transceiving machine and Bluetooth transceiving machine thereof |
| CN202026304U (en) * | 2011-03-11 | 2011-11-02 | 赖之安 | Bluetooth transmission module and Bluetooth equipment with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201752114U (en) * | 2010-04-30 | 2011-02-23 | 中国传媒大学 | Mobile phone signal transceiver |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350370A (en) * | 2000-10-24 | 2002-05-22 | 深圳市中兴通讯股份有限公司 | Transceiver |
| WO2007034133A1 (en) * | 2005-09-26 | 2007-03-29 | Cambridge Silicon Radio Limited | Antenna diversity |
| WO2008074190A1 (en) * | 2006-12-21 | 2008-06-26 | 3Dsp (Beijing) Limited Corporation | Receiving, transmitting method for bluetooth signal and bluetooth transceiver therein |
| CN101425816A (en) * | 2008-09-26 | 2009-05-06 | 中国科学院微电子研究所 | Transceiver for wireless ultra-wideband and method for transceiving signal by transceiver |
| CN101488782A (en) * | 2009-02-26 | 2009-07-22 | 锐迪科微电子（上海）有限公司 | Signal processing method for Bluetooth transceiving machine and Bluetooth transceiving machine thereof |
| CN202026304U (en) * | 2011-03-11 | 2011-11-02 | 赖之安 | Bluetooth transmission module and Bluetooth equipment with same |
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Effective date of registration: 20150914 Address after: Suzhou City, Jiangsu province 215123 Industrial Park Suzhou Linquan Street No. 399 Southeast University southeast hospital room 406-2 Patentee after: Suzhou Hua Shi wireless tech Co., Ltd Address before: Linquan street Suzhou City Industrial Park, 215123 No. 399 in Jiangsu Province Patentee before: Lai Zhian |