The PTT intercom of many linking bluetooths mobile terminal
1) the present invention relates to a kind of device realizing triggering one keyset group and lead to intercommunication function on multiple bluetooth equipment.Particularly relate to a kind of personal user needing the small-sized of frequent contact and medium-sized enterprise and needs to chat with friend and household, comprise: prison, medical first aid, the shockproof antiaircraft fire-fighting emergent of flood control, public security traffic, municipal administration's law enforcement, taxi, aviation, navigation, highway, railway, Guoan, electric power, oil, coal, fire-fighting, first aid, control flood, protect forest and prevent from fire, tourism etc. is linked with mobile terminal, based on the user of the group communication service of wireless network.
2) in the current information age, people always wish can converse immediately once pressing some keys, and unlike public's mobile phone, first dial 11 figure places, several seconds or longer time also will be waited to converse, if meet the other side conversing also do not know when can converse, no matter how anxious you have thing only patient etc.Along with the development of computer and the communication technology, current domestic mobile public network (G* and CDMA) is also being actively developed as group user provides PTT(PTT:PushtoTalk) business, at present, PTT that is mobile and UNICOM is in test phase now.PTT is the VoIP voice data packet technology be based upon on GPRS network basis, and PTT (PTT) function is a kind of mobile technology, can carry out " one to one " or " one-to-many " call rapidly, just as use intercommunication message register.But must use the mobile phone of built-in this function, regular handset cannot use PTT function, but a part supports that the mobile phone of high pass BREW can support PTT technology by software upgrading in the future.PTT is the mobile phone of " PoC ", has merged the function of mobile phone and intercom, it be the network of mobile phone.PTT mobile phone and general intercom different, one is that intercom does not need by network, and two is differences of can only closely conversing with intercom, and PTT service can the sensible place that can cover to cell phone network, does not almost have the restriction of distance.And PTT service can carry out charging according to duration, period and flow, also can monthly payment, this depends on operator.With high pass and the CDMA operator Nextel commercial precedent in the U.S., adopt flat rate system, expense is between 15-30 dollar.PTT mono-refers to a kind of mobile phone service by logical, utilizes the PoC of GPRS mobile phone (PoC:Push-to-TalkoverCellular) service to reach similar wireless telephonic communication modes.Have digital cellular phone service again, both can make a phone call, can press again certain key and realize group, individual call business, in today that work rhythm is accelerated, PTT is subject to people's favor really.But PTT is not once by logical, and it also needs connecting time, is also called the call delay time, and the difference of connecting time just has different PTT.Can use as intercom in China, but, need the phone of both sides all will support the function of PTT, SIM card also will open POC function simultaneously, and general each talk group can only a people be spoken simultaneously.
3) bluetooth is the jumbo short-distance wireless communication specification of a kind of low cost.Bluetooth specification adopts microwave frequency band work, transmission rate 1M byte per second, maximum transmission distance 10 meters, can reach 100 meters by increasing transmitting power.Bluetooth technology is global open, has good compatibility in the world, and the whole world can be connected by the invisible bluetooth network of low cost.Bluetooth technology not only applies to computer, Bluetooth technology can be adopted as various electronic equipments such as mobile phone, digital camera, video camera, printer, facsimile machine, household electrical appliances, realize wireless communications, and a tail (connecting line) need not be dragged, the extensive use of Bluetooth technology will make our life incomparably light.
4) intercom is a kind of wireless transmitting-receiving equipments being widely used in all trades and professions such as hotel, public security, taxi, has a wide range of applications in the various operative scenario such as commander, communication, scheduling.Intercom is different from plain old telephone, has following difference:
5) 1. talking mode is different.Mobile phone is man-to-man call often; Use group call pattern during intercom call, people a lot of people that speaks listens; " one to one " or " one-to-many " call can be carried out rapidly, just as use intercommunication message register.2. function key requires different.PTT key is as the Main Means of cluster intercom calls, frequency of usage is high, needs equally to use when wearing gloves in the outdoor operation of cold district, therefore requires that PTT key head is large, good hand touch, with regular handset button, durable multiple characteristic such as grade, requires that difference strengthens.
6) 3. method of calling is different.Can only closely converse different from intercom, mobile phone often uses the mode of dialing to make a call; Intercom need not dial, and uses PTT PTT key to call out;
7) 4. volume requires different.Cluster intercom cellphone is usually used in outdoor operation, and environment is noisy, and require that the output volume of intercom cellphone is higher, sound output is 2W at least.The power output of normal handset is the highest also with regard to 1.6w.
8) 5. profile and architectural difference larger.The configuration design of mobile phone is often based on attractive in appearance, and audio frequency exports the loudspeaker selecting power small size little; And intercom due to use environment more noisy, so intercom often uses the high-power larger loudspeaker of volume to export as volume.Due to the difference that the two uses, cause the two in appearance design, have different requirements.
Through development for many years, there are the problems such as backward in technique, function singleness at present in intercom, traditional intercom replace by Mobile phone talkback and certainly will become a kind of trend.Along with the development that mobile intelligent terminal continues, intelligent movable operating system platform function is become stronger day by day, and the mobile phone business that can carry in future and function get more and more, and mobile phone carry traditional intercommunication business, and other abundant application is provided, bring new vitality will to intercommunication business.It is reported, mobile, UNICOM releases " PTT " intercommunication based on GPRS network to group user." PTT " this business is mainly released to group user, and such as restaurant, market, logistics, public security etc. have the industry of frequent call demand.Current, three large operators are all proposed public network group service, comprise the sky wing intercommunication QCHAT of telecommunications, and the Mobile phone talkback POC of China Mobile and the collection news of CHINAUNICOM are led to.Its principle is, utilizes the data channel of the base station of public mobile network to transmit intercommunication information, call mode and traditional intercommunication similar, possess the group call ability of one-to-many.Through business development in a few years, the time delay of Push to talk over Cellular function POC business is lower than 1 second, close with traditional cluster intercommunication index, and therefore, POC business starts to step into the high speed development stage.Ptt function depends on the type of data, services of sim card, network support and application.PTT " Mobile phone talkback " is in fact exactly the mobile phone being integrated with intercom function.User presses the intercommunication key on mobile phone, just directly can converse with group Anywhere or individual.Compare the intercom that activity extent is confined within several kilometers, " PTT " mobile phone can use in CDMA1X or GPRS network coverage, achieves roaming that intercom cannot provide to long-distance intercommunication function of making peace.Current PoC " mobile phone of (PTT), merged the function of mobile phone and intercom, it be the network of mobile phone.After PTT service opened by mobile phone, as long as click the corresponding button of mobile phone, just can with the mobile phone of oneself and the call being realized " one to one " or " one-to-many " by the cohort selected.Although technically, public mobile network achieves the function of cluster intercommunication equally, and the concept of " PTT " is very practical, and a large problem of " PTT " GSM mobile handset released at present is that user locates.If " PTT " prefers the high-end business people in position, then also has certain gap in the problem such as confidentiality, speech quality; If prefer a low side blue collar, the use habit whether can cultivated smoothly is also a query.Speak because PTT is only a bond energy, in passive receipt message, transmission voice messaging etc., all need certain operation, need during intercommunication to pin PTT key, ability intercommunication always, can not loose one's grip.PTT as CDMA operator of U.S. Nextel serves, and needs owner to pin button and just can talk, and the sound that after loosing one's grip, the other side hears " ticking ", could talk.Secondly because intercom in terminal and mobile phone are in function and cannot unify in appearance.The Mobile phone talkback terminal of three large operators adopts the pattern of customization machine, has abandoned the characteristic of cell phone appearance fashion, mobile phone has been merged the feature of part intercom, realized the requirement of intercom.But so, the appearance element of mobile phone fashion is abandoned, every money mobile phone all uses the mode of customization to too increase manufacturing cost simultaneously.
Technical standard unification not to the utmost between current Ge Jia cell phone manufacturer.After moving and release PTT service all respectively on its GPRS and cdma network with UNICOM future, " intercommunication " between Liang great operator different system will realize interconnecting, and will there is a technical difficult problem.Along with the development of smart mobile phone, people advocate convenient and fashion more for the use of mobile terminal, traditional cluster and intercommunication terminal, often exist and use volume large, carry the problems such as inconvenient.
Summary of the invention
The object of the invention is for above-mentioned prior art Shortcomings part, there is provided a kind of highly versatile, method of calling flexible, any PTT mobile terminal can be used to realize intercommunication function fast, meet public network intercommunication mobile terminal in cluster intercommunication service application, the PTT intercom of many linking bluetooths mobile terminal that the professional application such as do not rely on the long button of mobile terminal PTT, confidentiality is controlled, volume is controlled requires.
Above-mentioned purpose of the present invention can be obtained by following measures, a kind of PTT intercom of many linking bluetooths mobile terminal, comprise bluetooth equipment 1, the bluetooth equipment 2 that simultaneously can link mobile terminal and the power module of power supply is provided, it is characterized in that: bluetooth equipment 2 is provided with the PTT PTT button by I/O mouth electrical connection bluetooth module 2, and the dio Output Modules 2 of connecting interface 2; Dio Output Modules 2 and other device common source in bluetooth equipment 2; Audio Input Modules 1 on bluetooth equipment 1 directly connects on the audio input port of pulse code modulation pcm interface of bluetooth module 1, and dio Output Modules 1 connects on the audio output port of pulse code modulation pcm interface of bluetooth module 1 by change over switch 1; When bluetooth equipment 1 is used alone, Audio Input Modules 1 and dio Output Modules 1 carry out the input and output of PTT PTT intercommunication audio frequency by the pulse code modulation pcm interface of bluetooth module 1; On trigger Bluetooth equipment 2 after PTT PTT key, inquired about or interrupt the information that acquisition PTT key is triggered by bluetooth module 2, bluetooth module 2 bluetooth chain leads to the mobile terminal with PTT function, mobile terminal sends PTT call request to the ptt server that Mobile data is online, send the audio-frequency information after coding to ptt server, the transmitting-receiving audio signal of bluetooth module 2 to be transmitted to the PTT mobile terminal in PTT group by mobile terminal by ptt server; After mobile terminal receives the PTT audio-frequency information of ptt server transmission, pass through wireless blue tooth by after audio decoder, audio-frequency information is sent to bluetooth equipment 1.
When bluetooth equipment 1 patches on bluetooth equipment 2 by hand, the interface 2 of bluetooth equipment 2 is connected with change over switch 1, the dio Output Modules 2 of bluetooth equipment 2 is communicated with the pulse code modulation pcm interface of bluetooth module 1 with the Audio Input Modules 1 of bluetooth equipment 1, is carried out the input and output of the audio frequency of PTT PTT intercommunication by Audio Input Modules 1 and dio Output Modules 2.
Change over switch 1 on bluetooth equipment 1 and bluetooth equipment 2 and interface 2 can be USB interface or probe shape and socket.
The present invention compares existing operating system following beneficial effect:
1) there is versatility, the present invention carries PTT mobile terminal by user and is transmitted to PTT mobile terminal in PTT group, can and any mobile terminal with bluetooth be linked and realize almost not having between user group the group communication of distance limit, make the common mobile terminal with bluetooth can not rely on the long button of mobile terminal PTT, depart from PTT mobile terminal and freely carry out the intercommunication of PTT cluster.
2) method of calling is flexible.When bluetooth equipment 1 of the present invention is used alone, user can use bluetooth equipment 1 to carry out intercommunication; After bluetooth equipment 1 connects bluetooth equipment 2, user can use bluetooth equipment 2 to carry out intercommunication.The present invention adopts two bluetooth equipment, facilitate confidentiality and disguise that high-end business people uses the intercommunication of bluetooth earphone PTT cluster, calling is selected flexible, because two bluetooth equipment avoids PTT mobile terminal, Bluetooth channels is occupied, the problem that bluetooth earphone cannot use.Thisly can use bluetooth equipment 1 bluetooth earphone, select the multiple intercommunication mode of bluetooth equipment 2, meet the needs of different user intercommunication application and user in the concealed application requirement of special occasions.
3) volume is controlled.The multiple bluetooth equipment of the present invention is equipped respectively PTT PTT key and the device such as earphone, audio amplifier, can built-in loudspeaker be passed through, arbitrarily improve or reduce volume, improve speech quality.Solve and be usually used in outdoor operation, environment is noisy, cluster intercom cellphone volume export do not meet noisy environment, require intercom cellphone volume high field needs.Also solve Mobile phone talkback terminal adopts customization machine pattern appearance element to be abandoned simultaneously, the problem that PTT key head is large, PTT mobile terminal is clumsy.For user is according to the aesthetic standard of oneself, aesthetic the providing of not mobile terminal outward appearance is in specie selected to select space.
4) manufacturing cost of public network intercommunication terminal is reduced.The present invention can with the Bluetooth talkback device of any multiple bluetooth equipments be linked with the mobile terminal of bluetooth, make mobile phone need not meet the particular/special requirement of intercom use, just can realize the application of specialized intercommunication, eliminating current use public mobile data network provides the mobile phone of intercommunication function adapting to the customization requirement in intercom characteristic, greatly reduces the cost of public network intercom cellphone development.
5) the present invention is by after the miscellaneous functions such as Computer Aided Design charger baby, GPS, greatly can make up the defect of regular handset in professional application, make public network intercom cellphone better meet the specialized requirement of sector application.The group communication that the elderly of children under guardianship and children use PTT mobile terminal to realize between user group can be met, user only needs button can initiate call to individual or group, communicate quickly and easily without the need to the integrated communication pattern of dialing with wait the other side off-hook, Emergency Assistance, the business such as voice reminder, make guardian understand movement track and the environment of an activation of children under guardianship in time.The present invention utilizes Bluetooth technology to use multiple bluetooth equipment to take into account the use habit of different users, can more conveniently carry out commanding and dispatching, and meets people at the needs of the convenient of mobile communication with fashion.
Accompanying drawing explanation
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with accompanying drawing, embodiments of the invention are described in detail.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
Fig. 1 is the PTT interphone circuit principle schematic of the present invention's many linking bluetooths mobile terminal
Fig. 2 is the circuit theory schematic diagram that the present invention increases power amplifier.
Fig. 3 is the circuit theory schematic diagram that the present invention increases two PTT key.
Fig. 4 is the circuit theory schematic diagram that the present invention increases information display screen.
Fig. 5 is the circuit theory schematic diagram that the present invention increases rechargeable battery.
Fig. 6 is the circuit theory schematic diagram that the present invention increases bluetooth GPS.
Fig. 7 is the circuit theory schematic diagram that the present invention increases traditional intercommunication module.
Consult Fig. 1.In most preferred embodiment described below, the system model of the PTT intercom of many linking bluetooths mobile terminal, mainly comprises bluetooth equipment 1, the bluetooth equipment 2 that simultaneously can link mobile terminal and provides the power module of power supply.Bluetooth equipment 2 is provided with the PTT PTT button by I/O mouth electrical connection bluetooth module 2, and the dio Output Modules 2 of connecting interface 2; Dio Output Modules 2 and other device common source in bluetooth equipment 2; The dio Output Modules 1 of bluetooth equipment 1 connects bluetooth module 1 by change over switch 1, and Audio Input Modules is connected directly between on bluetooth module 1.When bluetooth equipment 1 is used alone, Audio Input Modules 1 and dio Output Modules 1 are connected on the pulse code modulation pcm interface of the bluetooth module 1 of bluetooth equipment 1 by change over switch 1, are carried out the input and output of PTT PTT intercommunication audio frequency by the Audio Input Modules 1 on bluetooth equipment 1 and dio Output Modules 1; When bluetooth equipment 1 manually inserts bluetooth equipment 2, the interface 2 of bluetooth equipment 2 is connected with change over switch 1, dio Output Modules 2 on bluetooth equipment 2 is communicated with on the pulse code modulation pcm interface of the bluetooth module 1 on bluetooth equipment 1 by change over switch 1, carries out the input and output of the audio frequency of PTT PTT intercommunication by Audio Input Modules 1 on the dio Output Modules 2 on bluetooth equipment 2 and bluetooth equipment 1.Change over switch 1 on bluetooth equipment 1 and bluetooth equipment 2 and interface 2 can be USB interface or probe shape connector and socket.
After on bluetooth equipment 2, PTT PTT key is triggered, the information that the bluetooth module 2 on bluetooth equipment 2 is triggered by inquiring about or interrupt acquisition PTT key, the message that the bluetooth module 2 on bluetooth equipment 2 is triggered to mobile terminal transmission PTT key by wireless blue tooth; After mobile terminal receives the message that PTT key is triggered, automatic unlatching PTT calls out, mobile terminal sends PTT call request to the ptt server that Mobile data is online, after mobile terminal receives the information of the permission PTT calling that ptt server sends, mobile terminal receives the audio frequency input information of bluetooth module 1, after coding, sends the audio-frequency information after coding to ptt server, after ptt server receives the PTT audio-frequency information of mobile terminal, audio conversion is issued other mobile terminal in PTT group.After mobile terminal receives the PTT audio-frequency information of ptt server transmission, pass through wireless blue tooth by after audio decoder, information is sent to bluetooth equipment 1.
When bluetooth equipment 1 is used alone, user can use bluetooth equipment 1 to carry out intercommunication; After bluetooth equipment 1 manually connects bluetooth equipment 2, user can use bluetooth equipment 2 to carry out intercommunication.
Audio Input Modules comprises the audio processing modules of MIC, and dio Output Modules comprises the audio processing modules of loudspeaker.
Bluetooth module can be the independent general module comprising MCU function or the external member comprising Bluetooth chip, wireless transceiver and central controller MCU assembly composition.
Mobile terminal comprises the mobile terminal of mobile module and conventional cluster intercommunication module.
The change over switch of bluetooth equipment 1 and the interface of bluetooth equipment 2 comprise USB interface or probe-type connector and socket.
The I/O mouth that PTT PTT key is connected with bluetooth module, can in middle fracture, keyboard mouth, interface module or universaling I/O port at least one interface.Press PTT key, bluetooth module is by scanning or interrupting receive to corresponding information, and bluetooth module is to mobile phone transmission PTT key trigger message.
Interface module comprises analog interface, digital interface and man-machine interface three sub-blocks:
(1) analog interface comprises; Phonetic entry/output interface; Radio frequency control interface.
(2) satellite interface; The collection of the analog quantity such as battery electric quantity, battery temperature.
(3) digital interface comprises; System interface; SIM card interface; Test interface; EEPROM interface; Memory interface; ROM interface is mainly used to connect stored program memory FLASHROM, usually stores layer1,2 in FLASHROM, and 3, the program of MMI and application layer.RAM interface is mainly used to the static RAM (SRAM) (SRAM) connecting storage temporal data.
Consult Fig. 2.In the embodiment depicted in figure 2, according to embodiment 1, the dio Output Modules in bluetooth equipment 1 and bluetooth equipment 2 is by power amplifier module connecting interface and change over switch, and volume adjusting key is connected on the peripheral control circuits of power amplifier module.Volume adjusting key is used for the multiple that regulating power is amplified, and can meet the needs that user regulates volume.Due to cluster intercommunication terminal in actual use, need in the face of noisy environment, therefore volume is a very important index in the application of cluster intercommunication terminal.The present embodiment is electrically connected power amplifier module at bluetooth module with dio Output Modules, uses power amplification, the power that the audio frequency that can increase dio Output Modules exports, to meet volume cluster intercommunication clearly requirement in noisy environment.
Consult Fig. 3.In the embodiment depicted in figure 2, according to embodiment 1, beyond bluetooth equipment 1 and bluetooth equipment 2, be provided with a portable PTT bluetooth equipment 3, bluetooth equipment 2 and bluetooth equipment 3 are equipped with the PTT button that triggering mobile terminals initiates PTT calling.Portable PTT bluetooth equipment 3 can be combined into light PTT call model with the bluetooth earphone of bluetooth equipment 1, carries comparatively heavy mobile phone without the need to traditional mode.
Consult Fig. 4.In the embodiment shown in fig. 4, for making cluster intercommunication terminal in actual use, display group information, makes user understand the group name information of active calls.According to embodiment 1, the central controller MCU of the bluetooth module 2 in bluetooth equipment 2 is also connected with information display module, and information display module is shown by the data of MCU mobile terminal receive wireless transmission.Due in cluster intercommunication application, a people can be under the jurisdiction of multiple PTT group.For make user clearly oneself active calls time the group that belongs to, bluetooth equipment providing group show information is necessary a kind of demand.
Consult Fig. 5.In the embodiment shown in fig. 5, according to embodiment 1 and 3, in bluetooth equipment 2, also rechargeable battery is provided with; Rechargeable battery connects the charge port of the power module 2 of bluetooth module 2, mobile terminal charging inlet, interface 2 and bluetooth equipment 3 respectively;
After bluetooth equipment 1 patches bluetooth equipment 2 by hand, the interface 2 of bluetooth equipment 2 is connected with the change over switch 1 of bluetooth equipment 1, and is charged by the charging cell module of charging pins to bluetooth equipment 1 of interface 2 and change over switch 1;
The mobile terminal charge port of bluetooth equipment 2 is connected with the USB interface of mobile terminal by USB interface line, and charges to mobile terminal;
Bluetooth equipment 3 charge port of bluetooth equipment 2 is charged to bluetooth equipment 3 by connector mode, dual contact point interface or usb mode.
Because smart mobile phone power consumption is larger, cluster intercommunication business belongs to routine work important means, is the call requirement of continuity mobile terminal longer time, bluetooth equipment increases charger baby battery, contribute to the service time of improving mobile terminal, the carrying out of better safeguard work.
Consult Fig. 6.In the embodiment shown in fig. 6, on the basis of embodiment 1, bluetooth equipment 2 is also provided with the GPS module on the central controller MCU of the bluetooth module 2 be connected in bluetooth equipment 2, MCU controls GPS module operating state.MCU, by the instruction of wireless blue tooth mobile terminal receive, opens GPS module, closes, collects the operations such as data.MCU is responsible for the work processing all bluetooth modules; Bluetooth chip is for the treatment of wireless blue tooth signal and information; The transfer of data that wireless transceiver carries out Bluetooth signal is mutual, and by the data of the GPS module collected by being wirelessly transmitted to mobile terminal.After mobile terminal receives the gps data of bluetooth module 2 of bluetooth equipment 2, at software application layer calling data.Because GPS module belongs to the larger parts of power consumption in the terminal, the simultaneously poor-performing of part mobile terminal GPS in design, but positioning function belongs to important function in cluster intercommunication application, for promoting the performance of GPS, reduce the power consumption of mobile terminal, bluetooth increases GPS function, is a kind of important solution.
Consult Fig. 7.In the embodiment shown in fig. 7, according to the execution mode of embodiment 1 and embodiment 6, bluetooth equipment 2 can be set to, bluetooth equipment 2 and the bluetooth equipment 3 be made up of GPS module and bluetooth module 3, make mobile terminal can link bluetooth equipment 1, bluetooth equipment 2 and bluetooth equipment 3 three bluetooth equipments simultaneously.Bluetooth equipment 2 and bluetooth equipment 3 are all built in in bluetooth equipment 2, share same power module; Bluetooth equipment 3 mobile terminal receive, for the control of GPS module, comprises that GPS opens, closes, data extract and be transferred to mobile terminal.Bluetooth equipment 2 and mobile terminal carry out the control of PTT calling.Because GPS Bluetooth is comparatively complicated, the R&D cycle is longer, also can consider directly to use ripe GPS bluetooth module assembly to realize corresponding GPS Functional Design in embodiment 1, although cost increases, can increase research and development progress.
Above-described is only the preferred embodiments of the present invention.Should be understood that; for the person of ordinary skill of the art; under the premise without departing from the principles of the invention; some distortion and improvement can also be made; such as; according to the present invention, can carry out mutual combination or combination to above-described embodiment 1-7, these combine or change and change and should be considered as belonging to protection scope of the present invention.