CN102684754A - Bluetooth transmission module and bluetooth device with same - Google Patents
Bluetooth transmission module and bluetooth device with same Download PDFInfo
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- CN102684754A CN102684754A CN2011100595009A CN201110059500A CN102684754A CN 102684754 A CN102684754 A CN 102684754A CN 2011100595009 A CN2011100595009 A CN 2011100595009A CN 201110059500 A CN201110059500 A CN 201110059500A CN 102684754 A CN102684754 A CN 102684754A
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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, the bluetooth equipment that relates in particular to a kind of Bluetooth transmission module and have this Bluetooth transmission module.
Background technology
Bluetooth technology is the open global specifications of a kind of wireless data and voice communication; It is the basis with in-plant wireless connections; Set up one with the mobile device communication environment and be connected especially for fixing, comprising that carrying out wireless messages between numerous equipment such as mobile phone, PDA, wireless headset, notebook computer, relative peripheral exchanges.In fact, according to the bluetooth standard of having concluded, bluetooth also can be supported telecommunication, makes it have wider application, for example utilizes bluetooth to make up 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 that all radio systems are all opened, and therefore uses certain frequency range wherein all can run into uncertain interference source.For example some household electrical appliances, cordless telephone, garage door opener, microwave oven or the like all possibly be interference sources.The interference that these interference sources bring directly influences effective application of Bluetooth technology, has influence on signal safety of transmission and accuracy between bluetooth equipment.
In order to address this problem; The bluetooth transport module adopts hopping scheme to guarantee that link is stable in the prior art; Its frequency hopping is to be divided into several frequency hopping channels to frequency band, and in once connecting, the transmitter module in the Bluetooth transmission module constantly jumps to one other channel from a channel by certain sign indicating number sequence; As long as receiving-transmitting sides by the communication of this rule, just is difficult to receive the interference of other interference source.
But its jamproof performance can't adapt to high requirement.
Summary of the invention
In view of this, the bluetooth equipment that the present invention provides a kind of Bluetooth transmission module and has this Bluetooth transmission module, to solve the problem that prior art Bluetooth transmission module can't adapt to higher anti-interference requirement, its concrete scheme is following:
A kind of Bluetooth transmission module; Comprise: the fast frequency hopping signal that Bluetooth signal processing sub, local oscillator submodule, the said Bluetooth signal processing sub of reception are sent when bluetooth module is in emission state; And according to the slow frequency hopping local oscillation signal that the local oscillator submodule the provides down-conversion submodule that is intermediate-freuqncy signal with said fast frequency hopping conversion of signals; Receive the intermediate-freuqncy signal that said down-conversion submodule sends; And the intermediate frequency power amplification submodule that said intermediate-freuqncy signal is amplified; Transmitting channel according to the selection of chooser module; Signal reception/emission the submodule that said amplified IF signal is sent; The intermediate frequency that the receive channel that said signal reception/emission submodule is selected according to said chooser module when being received in bluetooth module and being in accepting state receives outer signals receives the signal processing submodule, and the slow frequency hopping local oscillation signal that provides according to said local oscillator submodule converts said outer signals into radiofrequency signal and said radiofrequency signal is sent to the up-conversion submodule of said Bluetooth signal processing sub.
Preferably; Also comprise: link to each other with the down-conversion submodule with said Bluetooth signal processing sub respectively; Receive the fast frequency hopping signal that said Bluetooth signal processing sub is sent, and with the radio frequency transmissions processing sub that sends to the down-conversion submodule after its filtering.
Preferably; Also comprise: link to each other with said Bluetooth signal processing sub with said up-conversion submodule respectively, receive radiofrequency signal that said up-conversion submodule sends and the radio frequency receiving signal processing module that sends to said Bluetooth signal processing sub after its filtering.
A kind of bluetooth equipment comprises aforesaid Bluetooth transmission module.
Can find out that from above-mentioned technical scheme the disclosed Bluetooth transmission module of the embodiment of the invention is that up-conversion module and down conversion module provide the slow frequency hopping signal through the local oscillator module that increases; Increase is carried out the process that slow frequency hopping is handled to signal; The signal that produces the bimodulus frequency hopping communicates, and has promoted the anti-interference of signal, makes it can satisfy higher interference free performance requirement; Improved confidentiality simultaneously, guaranteed fail safe and stability that Bluetooth transmission equipment is worked in data transmission procedure.
Further; The disclosed Bluetooth transmission module of the embodiment of the invention is sent with the intermediate frequency form owing to after signal being carried out the slow frequency hopping processing, makes the wavelength that sends signal compare with the signal of existing high frequency 2.4GHz; Wavelength is longer; Can better walk around the barrier in the transmission course, improve the transmission range of this module, make it can adapt to the requirement of more telecommunication.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of Bluetooth transmission module disclosed by the invention;
Fig. 2 is the communication structure sketch map between bluetooth equipment disclosed by the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The invention discloses a kind of Bluetooth transmission module; Its structure is as shown in Figure 1, comprising: Bluetooth signal processing sub 11, down-conversion submodule 12, intermediate frequency power amplification submodule 13, intermediate frequency receive signal processing submodule 14, up-conversion submodule 15, local oscillator submodule 16, chooser module 17 and signal reception/emission submodule 18.Wherein: the function of Bluetooth signal processing sub 11 and intermediate-freuqncy signal reception/emission submodule 18 is in still accepting state and different of emission according to current Bluetooth transmission module.
Bluetooth signal processing sub 11 plays the effect that baseband signal and radiofrequency signal are changed each other, promptly carries out fast frequency hopping, when emission state; Bluetooth signal processing sub 11 converts baseband signal into radiofrequency signal; And send, down-conversion submodule 12 received RF signals, the slow frequency hopping signal that provides according to local oscillator submodule 16 carries out the slow frequency hopping processing to the radiofrequency signal that receives; Promptly; Rf frequency and local frequency are subtracted each other and are become IF-FRE, change radiofrequency signal into intermediate-freuqncy signal, and send; The intermediate-freuqncy signal of 13 pairs of receptions of intermediate frequency power amplification submodule is amplified; Chooser module 17 is selected transmission channel according to current states, and signal reception/emission submodule 18 is selected intermediate frequency power amplification submodule 13 amplified IF signal through chooser module 17 transmission channel sends to free space.When accepting state; The receive path that signal reception/emission submodule 18 is selected according to chooser module 17 receives the outer signals in the free space, and intermediate frequency receives 14 pairs of outer signals that receive of signal processing submodule and handles, and from the signal that receives, selects intermediate-freuqncy signal; The unwanted frequency range of filtering; In order to guarantee to select intermediate-freuqncy signal not flooded by noise, intermediate-freuqncy signal is suppressed the amplification of noise, then it is offered up-conversion submodule 15; Up-conversion submodule 15 provides the intermediate-freuqncy signal that receives according to local oscillator submodule 16 slow frequency hopping signal carries out slow frequency hopping to be handled; That is, IF-FRE and local frequency are carried out addition become rf frequency, convert intermediate-freuqncy signal into radiofrequency signal; And the radiofrequency signal after will changing sends to Bluetooth signal processing sub 11, and Bluetooth signal processing sub 11 converts radiofrequency signal into baseband signal.
This shows; Bluetooth transmission module disclosed by the invention is that up-conversion module and down conversion module provide the slow frequency hopping signal through the local oscillator module that increases, and increases signal is carried out the process that slow frequency hopping is handled, and the signal that produces the bimodulus frequency hopping communicates; Promoted the anti-interference of signal; Make it can satisfy higher interference free performance requirement, improved confidentiality simultaneously, guaranteed fail safe and stability that the Bluetooth transmission module is worked in data transmission procedure.
Further; The disclosed Bluetooth transmission module of the embodiment of the invention is sent with the intermediate frequency form owing to after signal being carried out the slow frequency hopping processing, makes the wavelength that sends signal compare with the signal of existing high frequency 2.4GHz; Wavelength is longer; Can better walk around the barrier in the transmission course, improve the transmission range of this module, make it can adapt to the requirement of more telecommunication.
In the disclosed Bluetooth transmission module of present embodiment,
Further, above-mentioned Bluetooth transmission module also comprises: radio frequency transmissions processing sub 19 and radio frequency receiving signal processing sub 110.
Radio frequency transmissions processing sub 19 is arranged between said Bluetooth signal processing sub 11 and the down-conversion submodule 12, and links to each other with down-conversion submodule 12 with Bluetooth signal processing sub 11.Receive the fast frequency hopping signal that Bluetooth signal processing sub 11 is sent; And with sending to down-conversion submodule 12 after its filtering; Except that signal is carried out the filtering; Also can be to processing such as signal amplify, filtering sends to the clutter in the signal of down conversion module, makes signal can better carry out frequency-conversion processing.
Radio frequency receiving signal processing sub 110 is arranged between Bluetooth signal processing sub 11 and the up-conversion submodule 15; Receive radiofrequency signal that said up-conversion submodule 15 sends and with sending to said Bluetooth signal processing sub 11 after its filtering; In like manner; Processing such as can also amplify to the signal that receives, filtering sends to the clutter in the signal of down conversion module, makes signal can better carry out frequency-conversion processing.
Further, the present invention discloses a kind of bluetooth equipment, this bluetooth equipment has aforesaid Bluetooth transmission module.
Owing to adopted the Bluetooth transmission module with local oscillator submodule, increased signal is carried out the process that slow frequency hopping is handled in this bluetooth equipment, the signal that produces the bimodulus frequency hopping communicates; Promoted the anti-interference of signal; Improved confidentiality simultaneously, guaranteed fail safe and stability that bluetooth equipment is worked in data transmission procedure, further; Improved the transmission range of bluetooth equipment, made it can adapt to the requirement of more telecommunication.
Shown in Figure 2 for carrying out the sketch map of transport communication between bluetooth equipment disclosed by the invention; Comprising: first bluetooth equipment 21 and second bluetooth equipment 22; The first Bluetooth transmission module 23 that links to each other with each bluetooth equipment respectively and the second Bluetooth transmission module 24, the structure of each Bluetooth transmission module is all as shown in Figure 1.
Suppose that first bluetooth equipment is in emission state, second bluetooth module is in accepting state, and the communication process of two equipment rooms is described below:
At this moment, first selects module 239 to be in emission state, and the second Bluetooth transmission module 24 with bimodulus frequency hopping function is in receiving state signal, and the second chooser module 249 is in accepting state.The first Bluetooth transmission module 23 receives the initial data that first bluetooth equipment 21 sends, and this initial data is the radiofrequency signal that is suitable for launching through the first Bluetooth signal processing sub, 231 role transformations, and this radiofrequency signal has the fast frequency hopping characteristic.After handling, 232 pairs of these radiofrequency signals of the first radio frequency transmissions processing sub send into the first down-conversion submodule 233.The local oscillator input signal of the first down-conversion submodule 233 is provided by the first local oscillator submodule 238, and this local oscillation signal has the slow frequency hopping characteristic.The first down-conversion submodule 233 utilizes local oscillation signal to change radiofrequency signal into intermediate-freuqncy signal; And then send into the first intermediate frequency power amplification submodule 234 to intermediate-freuqncy signal and amplify; Behind the send channel of selecting through the first chooser module 239 that is in emission state, intermediate-freuqncy signal is launched by the first signal reception/emission submodule 2310.
The second Bluetooth transmission module 24 receives transmitting of the first Bluetooth transmission module 23 through secondary signal reception/transmitter module 2410; Behind the receive channel that the intermediate-freuqncy signal that receives is selected through the second chooser module 249 that is in receive status, receive signal processing submodule 247 by second intermediate frequency and handle and send into the second up-conversion submodule 246.The local oscillation signal with slow frequency hopping characteristic that the 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 processing sub 245 is handled, sends into the second Bluetooth signal processing sub 241.The second Bluetooth signal processing sub 241 changes the radiofrequency signal that receives into original data signal sends into second bluetooth equipment 22.Transmission course has been accomplished the transfer of data of one time first bluetooth equipment 21 to second bluetooth equipment 22 from the above mentioned.
If first bluetooth equipment 21 is in accepting state; Second bluetooth equipment 22 is in emission state; Then in second transport module of second bluetooth equipment 22 24 the second radio frequency transmissions processing sub 242, the second down-conversion submodule 243 and the second intermediate frequency power amplifier module 244 carry out with first transport module 23 in the first radio frequency transmissions processing sub 232, the first down-conversion submodule 233 process identical with the first intermediate frequency power amplifier module 234; Realize the transmission of data; And the first radio frequency receiving signal processing sub 235, the first up-conversion submodule 236 and first intermediate frequency in first transport module 23 of first bluetooth equipment 21 receive signal processing submodule 23 carry out with second transport module 24 in the second radio frequency receiving signal processing sub 245, the second up-conversion submodule 246 and second intermediate frequency receive signal processing submodule 247 identical functions, realize the reception of data.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part is partly explained referring to method and is got final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. Bluetooth transmission module; It is characterized in that; Comprise: the fast frequency hopping signal that Bluetooth signal processing sub, local oscillator submodule, the said Bluetooth signal processing sub of reception are sent when bluetooth module is in emission state; And according to the slow frequency hopping local oscillation signal that the local oscillator submodule the provides down-conversion submodule that is intermediate-freuqncy signal with said fast frequency hopping conversion of signals; Receive the intermediate-freuqncy signal that said down-conversion submodule sends; And the intermediate frequency power amplification submodule that said intermediate-freuqncy signal is amplified; Transmitting channel according to the selection of chooser module; With the signal reception/emission submodule that said amplified IF signal is sent, the intermediate frequency that the receive channel that said signal reception/emission submodule is selected according to said chooser module when being received in bluetooth module and being in accepting state receives outer signals receives the signal processing submodule, and the slow frequency hopping local oscillation signal that provides according to said local oscillator submodule converts said outer signals into radiofrequency signal and said radiofrequency signal is sent to the up-conversion submodule of said Bluetooth signal processing sub.
2. module according to claim 1; It is characterized in that; Also comprise: link to each other with the down-conversion submodule with said Bluetooth signal processing sub respectively; Receive the fast frequency hopping signal that said Bluetooth signal processing sub is sent, and with the radio frequency transmissions processing sub that sends to the down-conversion submodule after its filtering.
3. module according to claim 2; It is characterized in that; Also comprise: link to each other with said Bluetooth signal processing sub with said up-conversion submodule respectively, receive radiofrequency signal that said up-conversion submodule sends and the radio frequency receiving signal processing module that sends to said Bluetooth signal processing sub after its filtering.
4. a bluetooth equipment is characterized in that, comprises like any described Bluetooth transmission module among the claim 1-3.
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| CN201110059500.9A CN102684754B (en) | 2011-03-11 | 2011-03-11 | Bluetooth transmission module and bluetooth device with same |
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| CN201110059500.9A CN102684754B (en) | 2011-03-11 | 2011-03-11 | Bluetooth transmission module and bluetooth device with same |
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Cited By (4)
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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 |
| CN108521286A (en) * | 2018-03-13 | 2018-09-11 | 深圳飞思通科技有限公司 | A kind of communication means of the learning-oriented adaptive wireless frequency hopping of 2.4G frequency ranges |
| CN109756246A (en) * | 2017-11-02 | 2019-05-14 | 展讯通信（上海）有限公司 | Inhibit GSM to the method, device and mobile terminal of bluetooth interference |
| CN115420944A (en) * | 2022-08-30 | 2022-12-02 | 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 |
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| 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 |
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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 |