CN201266933Y

CN201266933Y - Interphone Bluetooth adapter

Info

Publication number: CN201266933Y
Application number: CNU2008201606786U
Authority: CN
Inventors: 杨宏星
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-15
Filing date: 2008-10-15
Publication date: 2009-07-01
Anticipated expiration: 2018-10-15

Abstract

An interphone Bluetooth adapter belongs to the wireless communication field and mainly comprises a lithium battery, a lithium battery charging circuit, a regulated power supply, a Bluetooth module, an interphone PTT synthetic circuit, a first audio detection circuit, a second audio detection circuit, an indicator light drive circuit, a radio-frequency antenna and an indicator light, wherein, the lithium battery charging circuit and a reset circuit are both connected with a charging power supply, the lithium battery charging circuit is connected with the lithium battery and the Bluetooth module, and connected with the regulated power supply by a electronic switch, the regulated power supply supplies power for the Bluetooth module, the reset circuit and the Bluetooth module are connected with the regulated power supply by the electronic switch, the Bluetooth module realizes signal transmission with an interphone by the first audio detection circuit, the second audio detection circuit and the interphone PTT synthetic circuit, the indicator light drive circuit is connected with the Bluetooth module and the indicator light, the radio-frequency antenna of the Bluetooth module transmits signals with a Bluetooth headset mutually, and a PTT receiver receives remote control signals. The interphone Bluetooth adapter realizes the interphone Bluetooth speech function, releases hands, and reduces radiation.

Description

The intercom Bluetooth adapter

Technical field

The utility model relates to a kind of intercom Bluetooth adapter, belongs to field of wireless communication.

Background technology

Bluetooth technology, be actually a kind of short-range radio technology, utilize " Bluetooth technology " can simplify mobile communication terminal devices such as palmtop PC, notebook computer and mobile phone handsets effectively, and can successfully simplify communicating by letter between above these equipment and the internet, thereby make the transfer of data between these modern communications equipments and the internet become efficient more rapidly, be the radio communication widening road.Generally, the Bluetooth technology feasible more modern mobile communication equipment that carries easily and computer equipments needn't just can be networked by cable, and can be realized wireless surfing the Internet.Its practical ranges can also be extended to information household appliances such as various household appliances, consumption electronic product and automobile, forms a huge cordless communication network.

The use of intercom is very universal, short-range radio communication has been deep into various operational environments, for example army, police and emergency service, public works, railway, harbour and airport transport establishment, enterprise of building, express delivery, safety, meeting and service industry or the like.

The inside and outside producer of host country does not all relate to the production project of intercom bluetooth earphone adapter at present.Sell in the market, the interior used hand-held intercom that is of industry perhaps is carried in the wired earphone outside the intercom, does not accomplish really to liberate both hands, and the radiation of hand-held intercom is more much bigger than mobile phone, and communication distance hand-held intercom far away more is big more to the radiation that human body produces.

Summary of the invention

The utility model is for solve realizing the communication of intercom blue tooth voice, and the liberation both hands reduce the problem of radiation and propose a kind of intercom Bluetooth adapter.

A kind of intercom Bluetooth adapter, it is characterized in that comprising lithium battery, lithium cell charging circuit, stabilized voltage power supply, reset circuit, bluetooth module, intercom PTT combiner circuit, first audio detection circuit 1, second audio detection circuit 2, drive circuit of indicator, radio-frequency antenna and indicator light, wherein: the lithium cell charging circuit input end links to each other with charge power supply, an output of lithium cell charging circuit is connected with the bluetooth module input, and links to each other with the stabilized voltage power supply input by electronic switch simultaneously; Another output of lithium cell charging circuit connects the input of bluetooth module; The input of reset circuit links to each other with charge power supply, and the output of reset circuit connects the stabilized voltage power supply input by electronic switch, and stabilized voltage power supply is powered to bluetooth module; The intercom PTT drive output signal of bluetooth module is transferred to intercom through intercom PTT combiner circuit, and the bluetooth earphone audio output signal one tunnel of bluetooth module directly is transferred to intercom, and another road first audio detection circuit 1 is transferred to bluetooth module; A receiving terminal of bluetooth module directly receives the audio output signal of intercom, and another receiving terminal receives second audio detection circuit 2 and receives the signal that sends behind the audio output signal of intercom; The bluetooth module output connects the drive circuit of indicator input, the drive circuit of indicator output connects indicator light, lithium battery connects the lithium cell charging circuit, and link to each other with the stabilized voltage power supply input by electronic switch, mains switch connects bluetooth module and electronic switch, the input of bluetooth module is connected with remote control PTT receiver with local PTT key respectively, transmit signal between remote control PTT receiver and the remote control PTT reflector, bluetooth module links to each other with stabilized voltage power supply by electronic switch, the mutual transmission signals of the radio-frequency antenna of bluetooth module and bluetooth earphone.

The utility model is a kind of intercom Bluetooth adapter, realized the blue tooth voice communication function of intercom, and the time of linking bluetooth foreshortened to 1 second by 4 seconds under the cell phone platform, improved emergency reaction speed, keep job state when finishing conversation, liberated both hands and farthest reduced the radiation injury of intercom human body.

Description of drawings

Fig. 1 is the composition frame chart of intercom Bluetooth adapter

Embodiment

The utility model is a nucleus module with the GC04 bluetooth module, bluetooth core application software by specific function, the peripheral circuit, the speech detection circuit (VOX) that cooperate technical grade, power supply circuits, battery etc., realize the voice control of common wireless blue tooth earphone and intercom, and then realized the half-duplex voice communication.

As shown in Figure 1, a kind of intercom Bluetooth adapter, comprise lithium battery, the lithium cell charging circuit, 2.7V stabilized voltage power supply, reset circuit, the GC04 bluetooth module, intercom PTT combiner circuit, first audio detection circuit 1, second audio detection circuit 2, drive circuit of indicator, radio-frequency antenna and indicator light, wherein: the lithium cell charging circuit input end links to each other with the 5V charge power supply, an output of lithium cell charging circuit is connected with GC04 bluetooth module input, be used for monitoring the voltage of lithium battery, and link to each other with 2.7V stabilized voltage power supply input by electronic switch simultaneously; Another output of lithium cell charging circuit connects the input of GC04 bluetooth module, is used for monitoring whether lithium battery is in charged state when charging; The input of reset circuit links to each other with the 5V charge power supply, and the output of reset circuit connects 2.7V stabilized voltage power supply input by electronic switch, and the 2.7V stabilized voltage power supply is given the power supply of GC04 bluetooth module; The intercom PTT drive output signal that the GC04 bluetooth module produces is received by intercom PTT combiner circuit, being used for driving local intercom sends voice signal, the bluetooth earphone audio output signal one tunnel of GC04 bluetooth module directly is transferred to the MIC end of intercom, and another road first audio detection circuit 1 is transferred to the GC04 bluetooth module; A receiving terminal of GC04 bluetooth module directly receives the audio output signal of intercom, and another receiving terminal receives second audio detection circuit 2 and receives the far-end call signal of sending behind the audio output signal of intercom; GC04 bluetooth module output connects the drive circuit of indicator input, and the drive circuit of indicator output connects indicator light; Lithium battery connects the lithium cell charging circuit, and links to each other with 2.7V stabilized voltage power supply input by electronic switch; Mains switch connects GC04 bluetooth module and electronic switch, and GC04 bluetooth module input connects the output of local PTT key and remote control PTT receiver respectively, and signal is connected between remote control PTT receiver and the remote control PTT reflector; The GC04 bluetooth module links to each other with stabilized voltage power supply by electronic switch, the mutual transmission signals of the radio-frequency antenna of GC04 bluetooth module and bluetooth earphone.

Its workflow is:

(1) earlier with bluetooth earphone and Bluetooth adapter pairing, pairing back both sides are in matching status;

(2) when the intercom of far-end intercom call this locality, the voice signal of far-end intercom is delivered to the SPEAK end of local intercom, deliver to the MIC end of Bluetooth adapter again, the MIC end of Bluetooth adapter has added audio detection circuit 2, be subjected to this signal activation, Bluetooth adapter is set up voice link with bluetooth earphone immediately, and this moment, the voice of far-end intercom just passed on the receiver of bluetooth earphone;

(3) when the user of bluetooth earphone answers the calling of far-end intercom, voice signal is reached the SPEAK end of Bluetooth adapter by the MIC end of bluetooth earphone, after the audio detection circuit 1 of Bluetooth adapter (VOX circuit) detects voice signal, producing a PTT signal drives local intercom and launches, the local voice signal is sent to the far-end intercom, finished the semiduplex conversation of intercom;

(4) when local intercom user makes a call by bluetooth earphone, this moment, bluetooth was in holding state, and voice link is not also set up, as direct conversation, voice can't reach adapter, need the bluetooth earphone user earlier by the multifunction key on the earphone, or by local PTT key, or by the PTT key on the remote control PTT reflector, after about 2 seconds, to hear in the earphone and set up the prompt tone that voice link finishes, and finish the voice link of bluetooth earphone and Bluetooth adapter and set up, can begin speech; Voice reach Bluetooth adapter, and drive local intercom emission by VOX circuit generation PTT signal, enter normal half-duplex call state;

(5) both sides do not have voice to occur in 30 seconds, and Bluetooth adapter will cut off with the voice link of bluetooth earphone, enters matching status, reaches purpose of power saving, when calling out again, restarts Bluetooth function.

The intercom Bluetooth adapter adopts the independently lithium battery power supply of 170mAH, the VOX circuit start is about 0.3 second, and when the delay time that the VOX circuit is closed intercom emission dispatches from the factory adjustable 0.5 second, 1 second, 1.5 second, 2 seconds, default value was 1 second, also was provided with the manual button of PTT on the Bluetooth adapter, can manually send, its battery circuit has the low pressure warning, charging indication, functions such as automatic shutdown.

Claims

1, a kind of intercom Bluetooth adapter, it is characterized in that comprising lithium battery, lithium cell charging circuit, stabilized voltage power supply, reset circuit, bluetooth module, intercom PTT combiner circuit, first audio detection circuit (1), second audio detection circuit (2), drive circuit of indicator, radio-frequency antenna and indicator light, wherein: the lithium cell charging circuit input end links to each other with charge power supply, an output of lithium cell charging circuit is connected with the bluetooth module input, and links to each other with the stabilized voltage power supply input by electronic switch simultaneously; Another output of lithium cell charging circuit connects the input of bluetooth module; The input of reset circuit links to each other with charge power supply, and the output of reset circuit connects the stabilized voltage power supply input by electronic switch, and stabilized voltage power supply is powered to bluetooth module; The intercom PTT drive output signal of bluetooth module is transferred to intercom through intercom PTT combiner circuit, and the bluetooth earphone audio output signal one tunnel of bluetooth module directly is transferred to intercom, and another road first audio detection circuit (1) is transferred to bluetooth module; A receiving terminal of bluetooth module directly receives the audio output signal of intercom, and another receiving terminal receives second audio detection circuit (2) and receives the signal that sends behind the audio output signal of intercom; The bluetooth module output connects the drive circuit of indicator input, the drive circuit of indicator output connects indicator light, lithium battery connects the lithium cell charging circuit, and link to each other with the stabilized voltage power supply input by electronic switch, mains switch connects bluetooth module and electronic switch, the input of bluetooth module is connected with remote control PTT receiver with local PTT key respectively, transmit signal between remote control PTT receiver and the remote control PTT reflector, the output of bluetooth module is connected with the stabilized voltage power supply input by electronic switch, the mutual transmission signals of the radio-frequency antenna of bluetooth module and bluetooth earphone.