CN104602367A - Vehicle earphone radio frequency wireless system - Google Patents

Vehicle earphone radio frequency wireless system Download PDF

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Publication number
CN104602367A
CN104602367A CN201410795443.4A CN201410795443A CN104602367A CN 104602367 A CN104602367 A CN 104602367A CN 201410795443 A CN201410795443 A CN 201410795443A CN 104602367 A CN104602367 A CN 104602367A
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CN
China
Prior art keywords
earphone
radio frequency
circuit
wireless
vehicle
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Pending
Application number
CN201410795443.4A
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Chinese (zh)
Inventor
龙凤娇
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龙凤娇
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Priority to CN201410795443.4A priority Critical patent/CN104602367A/en
Publication of CN104602367A publication Critical patent/CN104602367A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the vehicle telephone communication technical field, particularly to a wireless earphone system for enhancing the privacy of vehicular communication. The vehicle earphone radio frequency wireless system comprises a vehicle terminal, wireless earphones and a switch; an audio output end of the vehicle terminal is connected with an input end of a radio frequency transmitter when the switch is used in the wireless earphones; a voice signal is modulated to be sent to the wireless earphones through the radio frequency transmitter; the audio output end of the vehicle terminal is connected with an internal speaker when the switch is not used in the wireless earphones. The vehicle earphone radio frequency wireless system is simple and easy to implement, the privacy of the vehicular communication can be effectively improved, and the safety of the driving of a vehicle owner is improved due to the fact that the driving of the vehicle owner is not affected.

Description

A kind of vehicle-mounted earphone RF wireless systems
Technical field
The present invention relates to car phone communication technical field, definite is a kind of strengthen vehicle communication privacy realize wireless headphone system.
Background technology
Along with the development of society and the raising of living standards of the people, popularizing of family-sized car, people obviously increase the time in car, and in car, call is inevitable.In order to traffic safety, bluetooth handsfree call is a good solution, and therefore on-vehicle Bluetooth system obtains significant progress.But, consider privacy of user requirement.Sometimes secret call is required, as related to trade secret, individual privacy etc.Often drive for some but the user of preference earphone, the introducing of bluetooth earphone is not a perfect solution.Because bluetooth cellular phone major part in the market all can not be supported to connect two Bluetooth hands-free equipment simultaneously, namely mobile phone connects bluetooth earphone and vehicle-mounted Bluetooth equipment by bluetooth handsfree protocol simultaneously.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of vehicle-mounted earphone RF wireless systems, and can object be the privacy that effectively improve vehicle mounted call, and does not affect the fail safe of car owner's driving.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of vehicle-mounted earphone RF wireless systems, comprise car-mounted terminal, wireless headset and switch, when described switch uses in described wireless headset, the audio output of car-mounted terminal is connected with the input of radio frequency sending set; Voice signal is sent to described wireless headset through modulation by described radio frequency sending set; The audio output of car-mounted terminal, when described wireless headset does not use, is connected with internal loudspeaker by described switch.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described radio frequency sending set comprises the power circuit and audio frequency of powering for this radio frequency sending set
In this example, earphone machine 1 is arranged on earphone support 2, and described wireless headset 1 is radio frequency earphone, and described earphone support 2 charging circuit will charge to described wireless headset 1, and described radio frequency sending set circuit is stopped using; When described wireless headset 1 leaves described earphone support, described wireless headset 1 charging circuit is stopped using, and described radio frequency sending set circuit will with described wireless headset 1 from being dynamically connected and transmitting data.
Comprise car-mounted terminal, wireless headset 1 and switch 4, described car-mounted terminal comprises mobile phone terminal 6 and vehicle-mounted radio 7, described in open, the audio output of car-mounted terminal during use, is connected with the input of radio frequency sending set by 4 described wireless headset 1 in; Voice signal is sent to described wireless headset 1 through modulation by described radio frequency sending set; The audio output of car-mounted terminal, when described wireless headset 1 does not use, is connected with internal loudspeaker 5 by described switch.
Wherein, described radio-frequency antenna 3 comprises radio frequency sending set and radio frequency receiver.
Preferably, described radio frequency sending set comprises the power circuit and audio signal input circuit of powering for this radio frequency sending set; Described audio signal input circuit is connected with radio-frequency antenna through signal modulation circuit, baseband circuit, radio frequency transmitter circuitry successively.
Preferably, described wireless headset 1 comprises the power circuit and antenna of powering for this wireless headset; Described antenna exports be connected with earphone horn through radio-frequency transmitter, baseband circuit, audio signal demodulator, audio frequency successively.
Preferably, also comprise the earphone support 2 for placing described wireless headset 1, described switch 3 is arranged on described earphone support 2, described earphone support 2 is also provided with described wireless headset 1 charging circuit and described radio frequency sending set circuit.
Described onboard wireless radio frequency earphone system is connected with vehicle-mounted radio, blocks broadcast receiver to the two-way audio at Qianmen and exports (because call voice exports only take this two-way), controlled in inside by Switch Controller audio frequency outbound course.Onboard wireless radio frequency earphone system can connect radio-frequency antenna, realizes the function by radio signal transmission audio frequency.
Described onboard wireless radio frequency earphone system inside is integrated with MCU, power amplifier module, circuit selector switch, signal converter, radio-frequency signal generator, radio frequency earphone, radio-frequency transmissions antenna and earphone support.Signal input circuit; Described audio signal input circuit is connected with radio-frequency antenna through signal modulation circuit, baseband circuit, radio frequency transmitter circuitry successively.
Further, described wireless headset comprises the power circuit and antenna of powering for this wireless headset; Described antenna exports be connected with earphone horn through radio-frequency transmitter, baseband circuit, audio signal demodulator, audio frequency successively.
Further, also comprise the earphone support for placing described wireless headset, described switch-linear hybrid, on described earphone support, described earphone support is also provided with described wireless headset charging circuit and described radio frequency sending set circuit.
Further, when described earphone is placed on described earphone support, described wireless headset charging circuit will to described earphone charging, and described radio frequency sending set circuit is stopped using; When described earphone leaves described earphone support, described wireless headset charging circuit is stopped using, and described radio frequency sending set circuit will with described earphone from being dynamically connected and transmitting data.
The invention has the beneficial effects as follows: native system realizes simple, easy to operate, effectively can improve the privacy of vehicle mounted call, and not affect the driving of car owner, improve the fail safe that car owner drives.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of vehicle-mounted earphone RF wireless systems of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, wireless headset, 2, earphone support, 3, radio-frequency antenna, 4, switch, 5, loud speaker, 6, mobile phone terminal, 7, vehicle-mounted radio.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of structural representation of vehicle-mounted earphone RF wireless systems.
The indices designing requirement of each module all meets the requirement of car rule.
Under initial condition, radio frequency earphone completes pairing process with radio-frequency module.Meanwhile, for ease of maintain and replace, radio frequency earphone and radio-frequency module all support matching function again.Radio-frequency module can send audio signal to wireless headset 1, also from the communication connection of wireless headset 1 received RF and can disconnect (i.e. earphone taking-up and the state put back to) signal, onboard wireless radio frequency earphone system can utilize the whereabouts of this signal controlling output audio.The audio frequency input of onboard wireless radio frequency earphone system is from broadcast receiver, and audio frequency can be output to original loud speaker or be sent in a wireless form by radio-frequency antenna.Output switching controls to be realized by circuit selector switch, and switching time is less than l00ms.It is synchronous that this system can guarantee that front and back loudspeaker audio exports, and do not produce Pop sound simultaneously.When system works, can ensure that broadcast receiver can not detect loud speaker open circuit and produce DTC.
Power management aspect, when the system hibernates, its power consumption is in reduced levels, and only need to monitor wireless change of power consumption, other modules do not work, until system startup next time just can enter operating state.When onboard wireless radio frequency earphone system detects that broadcast receiver is opened, system enters operating state after 5s.After system starts, can automatically carry out a power-on diagnostic, according to the earphone state adjustment position of the switch.When broadcast receiver enters resting state, system enters resting state after 5s, and circuit selector switch switches to loud speaker, and this connection does not affect by working state of system.In resting state, onboard wireless radio frequency earphone system only needs to detect broadcast receiver power consumption, as the decision condition that system starts.
For radio frequency headset designs aspect, during system works, if wireless headset 1 is in earphone support 2, audio signal should export loud speaker 3 to; If wireless headset 1 is not in earphone support 2, audio signal should export radio-frequency antenna 4 to.Earphone support 2 has charge function, open and wireless headset 1 in earphone support 2 time.Earphone support 2 can charge to wireless headset 1.
In this example more, the volume of wireless headset 1 is by the volume knob adjustment on broadcast receiver.Wireless headset 1 does not establish other buttons, but has reserved hiding contact and be used for carrying out replacing pairing.With indicator light on wireless headset 1, flicker represents charges, and normal bright expression battery is full, and expression of often going out does not recharge.RF signal transmitter and radio frequency earphone carry out transmitting and have perfect encryption mechanism, ensure that the safety of transmission data.
For the Audio conversion module of this system and the jack design of radio frequency earphone support.Concrete position on real vehicle needs to design according to different automobile types, and principle is convenient to user operation, improves the experience of user.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. a vehicle-mounted earphone RF wireless systems, is characterized in that, comprises car-mounted terminal, wireless headset and switch, when described switch uses in described wireless headset, is connected by the audio output of car-mounted terminal with the input of radio frequency sending set; Voice signal is sent to described wireless headset through modulation by described radio frequency sending set; The audio output of car-mounted terminal, when described wireless headset does not use, is connected with internal loudspeaker by described switch.
2. a kind of vehicle-mounted earphone RF wireless systems according to claim 1, is characterized in that, described radio frequency sending set comprises the power circuit and audio signal input circuit of powering for this radio frequency sending set; Described audio signal input circuit is connected with radio-frequency antenna through signal modulation circuit, baseband circuit, radio frequency transmitter circuitry successively.
3. a kind of vehicle-mounted earphone RF wireless systems according to claim 1, is characterized in that, described wireless headset comprises the power circuit and antenna of powering for this wireless headset; Described antenna exports be connected with earphone horn through radio-frequency transmitter, baseband circuit, audio signal demodulator, audio frequency successively.
4. a kind of vehicle-mounted earphone RF wireless systems according to claim 1, it is characterized in that, also comprise the earphone support for placing described wireless headset, described switch-linear hybrid, on described earphone support, described earphone support is also provided with described wireless headset charging circuit and described radio frequency sending set circuit.
5. a kind of vehicle-mounted earphone RF wireless systems according to claim 1, is characterized in that, when described earphone is placed on described earphone support, described wireless headset charging circuit will to described earphone charging, and described radio frequency sending set circuit is stopped using; When described earphone leaves described earphone support, described wireless headset charging circuit is stopped using, and described radio frequency sending set circuit will with described earphone from being dynamically connected and transmitting data.
CN201410795443.4A 2014-12-19 2014-12-19 Vehicle earphone radio frequency wireless system Pending CN104602367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410795443.4A CN104602367A (en) 2014-12-19 2014-12-19 Vehicle earphone radio frequency wireless system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410795443.4A CN104602367A (en) 2014-12-19 2014-12-19 Vehicle earphone radio frequency wireless system

Publications (1)

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CN104602367A true CN104602367A (en) 2015-05-06

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CN201410795443.4A Pending CN104602367A (en) 2014-12-19 2014-12-19 Vehicle earphone radio frequency wireless system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106878876A (en) * 2017-03-21 2017-06-20 合肥极友软件开发有限公司 A kind of onboard wireless RF communication system
CN107547975A (en) * 2016-06-23 2018-01-05 比亚迪股份有限公司 Switching method, system and the voice collector of voice-grade channel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2427934Y (en) * 2000-05-10 2001-04-25 郃发企业有限公司 Non holding receiver infrared transmission device in vehicle for mobile telephone
US20050135573A1 (en) * 2003-12-22 2005-06-23 Lear Corporation Method of operating vehicular, hands-free telephone system
CN201278526Y (en) * 2008-09-26 2009-07-22 信华精机有限公司 Bluetooth earphone circuit
CN103401986A (en) * 2013-07-26 2013-11-20 福建慧翰微电子有限公司 Implementation method and wireless headset system for enhancing vehicle communication privacy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2427934Y (en) * 2000-05-10 2001-04-25 郃发企业有限公司 Non holding receiver infrared transmission device in vehicle for mobile telephone
US20050135573A1 (en) * 2003-12-22 2005-06-23 Lear Corporation Method of operating vehicular, hands-free telephone system
CN201278526Y (en) * 2008-09-26 2009-07-22 信华精机有限公司 Bluetooth earphone circuit
CN103401986A (en) * 2013-07-26 2013-11-20 福建慧翰微电子有限公司 Implementation method and wireless headset system for enhancing vehicle communication privacy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107547975A (en) * 2016-06-23 2018-01-05 比亚迪股份有限公司 Switching method, system and the voice collector of voice-grade channel
CN107547975B (en) * 2016-06-23 2019-09-13 比亚迪股份有限公司 Switching method, system and the voice collector of voice-grade channel
CN106878876A (en) * 2017-03-21 2017-06-20 合肥极友软件开发有限公司 A kind of onboard wireless RF communication system

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Application publication date: 20150506

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