Intelligent intercom with bluetooth automatic adaptation frequencyTechnical field
The invention belongs to a kind of communication apparatus, a kind of particularly intelligent intercom bluetooth-capable.
Background technology
Conventional wireless electricity intercom basic functional principle is divided into three parts.One, emitting portion, voice by modulated signal andModulation circuit is converted into the radio-frequency carrier signal that audio signal generates transmitting through phaselocked loop and voltage controlled oscillator (VCO), through too slowPunching amplification, excitation amplification, power amplifier, generates specified radio-frequency power, by antenna low-pass filter, inhibits harmonic wave, then passes throughAntenna is launched；Two, receiving portion, receiving portion by from radio frequency amplified signal with from phase-locked loop frequency synthesizer electricityFirst local oscillation signal on road is mixed at the first frequency mixer and generates the first intermediate-freuqncy signal.First intermediate-freuqncy signal passes through crystal filterDevice further eliminates the noise signal of neighboring trace.Filtered first intermediate-freuqncy signal enters IF process chip, believes with the second local oscillatorMixing generates the second intermediate-freuqncy signal number again, after the second intermediate-freuqncy signal filters out useless spurious signal by a ceramic filter,It is amplified and frequency discrimination, generates audio signal.Audio signal by amplification, bandpass filter, the circuits such as postemphasis, into volume controlCircuit and power amplifier amplification processed, drive the speaker, the sound that can be launched；Three, signaling is handled, and intercom is micro-Control unit (MCU) generates CTCSS/CDCSS signals and is adjusted by amplification, is modulated into voltage controlled oscillator.Receive frequency discriminationThe low frequency signal obtained afterwards, a part is filtered shaping by amplification and infrasonic bandpass filter, into microcontroller listFirst (MCU), is compared with preset value, by the output of its output control audio frequency power amplifier and loud speaker.I.e. if with preset frequency pointIt is identical with infrasonic value, then loud speaker is opened, if it is different, then mute speaker.Above-mentioned three parts are the bases of traditional intercomPresent principles, the premise that one-to-one or cluster conversation can be established are to participate in the intercom needs setting of call in identical frequencyOn, and receive subsonics with transmitting subsonics parameter it is identical, this cumbersome setting operation element just brought, easy to produce mistake simultaneouslyIt wastes time, intercom of the present invention is exactly can be by smart bluetooth system frequency and reception subsonics and the ginseng for emitting subsonicsNumber automatic adaptation is completed.
Invention content
The purpose of the present invention is to solve the above problems, propose a kind of intelligent intercommunication with bluetooth automatic adaptation frequencyMachine, the intelligent intercom with bluetooth automatic adaptation frequency, can especially in transfer communication system with strong antijamming capabilityTo be effectively prevented interference of the interference signal to intermediate station, realizes channeling in zonule, carry the spy of high-frequency utilization ratePoint.
The purpose of the present invention is achieved through the following technical solutions：Intelligent intercommunication with bluetooth automatic adaptation frequencyMachine, is equipped with casing, and the casing is equipped with keyboard, liquid crystal display, main circuit board, the main circuit board are housed in the casingIt is equipped with primary processor, it is characterised in that：The primary processor is equipped with asynchronous communication interface, input/output interface, serial peripheralInterface, the primary processor are connected by asynchronous communication interface and intercommunication module communication, and the primary processor passes through serial peripheralInterface is connect with external memory data, and the primary processor is connect by asynchronous communication interface with blue-teeth data module communication,The primary processor is connect by input/output interface with Bluetooth audio frequency module data, and the primary processor is connect by input and outputMouth is connect with keyboard data, and the primary processor increases smart bluetooth system, has perfect frequency in Bluetooth system and setsThe parameter database of subsonics setting, transmitting subsonics setting is set, receives, one-to-one or cluster intercom is only needed through bluetooth systemSystem can be automatically performed frequency, receive subsonics, transmitting subsonics setting, and the Bluetooth audio frequency module is opened by the first Audio conversionClose, the second Audio conversion switch is connected with intercommunication module control, first Audio conversion switch is circumscribed with microphone, described theTwo Audio conversions switch is circumscribed with loud speaker, and the Bluetooth audio frequency module, intercommunication module, blue-teeth data module are circumscribed with antenna,The primary processor, Bluetooth audio frequency module, intercommunication module, blue-teeth data module are by power module for electrical connection.
The main circuit board any one intercom in one-to-one frequency adaptation can be used as originating end to initiate frequencyAdaptation demand, another intercom are then used as receiving terminal, and originating end is sent out just has prompt with frequency demand in receiving terminal, is receivingEnd can select to receive this demand still to refuse this demand, to quickly finish the frequency adaptation work of one-to-one intercommunication.
Frequency adaptation demand of the main circuit board under one-to-many cluster environment, any one intercom can be madeFrequency adaptation demand is initiated for originating end, all intercoms are then all used as receiving terminal, originating end to send out with frequency demand in receiving terminalPrompt is just had, can select to receive this demand in receiving terminal still to refuse this demand, to which one-to-many collection be rapidly completedThe frequency adaptation work of group's intercommunication.
The main circuit board is furnished with the related application of Android and IOS systems, after bluetooth and mobile phone terminal pairing, energyIn the simple and quick setting channel number of mobile phone application end, transmission power, tranmitting frequency, receives frequency, transmitting coding, receive solutionThe parameter information of code.
The main circuit board can be answered by Bluetooth transmission equipped with bluetooth headset function and be hung up the telephone, support HFP, HSP,PBAP agreements.
The main circuit board be equipped with Baffle Box of Bluetooth function, by Bluetooth transmission can put the cell phone outside on music, supportA2DP, AVRCP, OPP agreement.
The present invention can prevent user in non-group from usurping channel using subsonics；Resist it is strong in the ability of disturbing, especially in transfer communicationInterference signal can be effectively prevented in system to intermediate station in disturbing；It realizes channeling in zonule, puies forward high-frequency profitWith rate, reach frequency sharing；It may be implemented different groups other group and the selective calling functions such as exhale, generally call, it is simple, convenient and practical, thisInvention intercommunication function fast and accurately completes above-mentioned etc. responsibility operation, and especially subsonics is arranged, and subsonics can prevent non-groupInterior user usurps channel；Strong antijamming capability can be effectively prevented interference signal to transfer especially in transfer communication systemThe interference of platform；It realizes channeling in zonule, puies forward high-frequency utilization rate, reach frequency sharing；Different groups may be implementedGroup the selective calling functions such as exhale, generally call, simple, convenient and practical, intercommunication function of the present invention is fast and accurately completed above-mentioned etc.Etc. responsibilities operation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and examples：
Embodiment：Referring to attached drawing 1, the intelligent intercom with bluetooth automatic adaptation frequency is equipped with casing, on the casingEquipped with keyboard, liquid crystal display, main circuit board is housed in the casing, the main circuit board is equipped with primary processor, the masterProcessor is equipped with asynchronous communication interface, input/output interface, Serial Peripheral Interface (SPI), and the primary processor passes through asynchronous communication interfaceIt communicates and connects with intercommunication module, the primary processor is connect by Serial Peripheral Interface (SPI) with external memory data, the main placeReason device is connect by asynchronous communication interface with blue-teeth data module communication, and the primary processor passes through input/output interface and bluetoothAudio-frequency module data connection, the primary processor are connect by input/output interface with keyboard data, and the primary processor increasesSmart bluetooth system, the parameter for having perfect set of frequency in Bluetooth system, receiving subsonics setting, transmitting subsonics settingDatabase, one-to-one or cluster intercom only need that by Bluetooth system frequency can be automatically performed, receive subsonics, transmitting AsiaSound is arranged, and the Bluetooth audio frequency module is switched by the first Audio conversion, the second Audio conversion switch connects with intercommunication module controlIt connects, the first Audio conversion switch is circumscribed with microphone, and the second Audio conversion switch is circumscribed with loud speaker, the bluetoothAudio-frequency module, intercommunication module, blue-teeth data module are circumscribed with antenna, the primary processor, Bluetooth audio frequency module, intercommunication module,Blue-teeth data module is by power module for electrical connection；The main circuit board any one intercom in one-to-one frequency adaptationOriginating end can be used as to initiate frequency adaptation demand, another intercom is then used as receiving terminal, originating end to send out with frequency demandPrompt is just had in receiving terminal, can select to receive this demand in receiving terminal still to refuse this demand, to quickly finish oneFrequency adaptation work to an intercommunication；Frequency adaptation demand of the main circuit board under one-to-many cluster environment, it is any onePlatform intercom can be used as originating end to initiate frequency adaptation demand, and all intercoms are then all used as receiving terminal, originating end to send outPrompt is just had in receiving terminal with frequency demand, can select to receive this demand in receiving terminal still to refuse this demand, to fastSpeed completes the frequency adaptation work of one-to-many cluster intercommunication；The main circuit board is answered equipped with the related of Android to IOS systemsWith, by bluetooth and mobile phone terminal pairing after, can be in the simple and quick setting channel number of mobile phone application end, transmission power, transmittingFrequency, transmitting coding, receives decoded parameter information at receives frequency；The main circuit board passes through indigo plant equipped with bluetooth headset functionTooth transmission, which can answer, hangs up the telephone, and supports HFP, HSP, PBAP agreement；The main circuit board is equipped with Baffle Box of Bluetooth function, passes throughBluetooth transmission can put the cell phone outside on music, support A2DP, AVRCP, OPP agreement.
Finally it should be noted that：Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneouslyThe non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above descriptionGo out other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawnThe obvious changes or variations of stretching are still in the protection scope of this invention.