CN2428930Y

CN2428930Y - Direct power-supplying sound-controlled switch-on device for wireless intercom

Info

Publication number: CN2428930Y
Application number: CN 00242926
Authority: CN
Inventors: 王健华
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-07
Filing date: 2000-07-07
Publication date: 2001-05-02
Anticipated expiration: 2010-07-07

Abstract

The utility model relates to a direct power-supplying sound-controlled switch-on device for a wireless intercom. The utility model is characterized in that the device comprises an earphone/sound pickup jack, a sound pickup power supply circuit, an audio amplification circuit, a calling output/indication circuit, an audio controlled session start circuit, a calling control circuit, a call control controlled circuit and a start delay circuit. The utility model can adopt and utilize the wireless intercom for out connecting an earphone. A part of electric current used by a sound receiver is used for operation. The utility model has the electricity saving function of receiving states. The utility model can be matched with mobile phones in various brands and models.

Description

Wireless tranceiver is directly powered, the acoustic control switch-on device

The utility model relates to a kind of peripheral hardware switch-on device of wireless tranceiver.

General wireless tranceiver provides power supply to have two kinds to the mode of external device:

One. in the socket of wireless tranceiver to the external device insertion, except the employed external microphone power supply of (earphone/) words receiver end points is provided, provide an out-put supply end points in addition; So, it is bigger to eat electric weight as if external device, can use the power supply of out-put supply end points and not need external connection battery.

Two. in the socket of wireless tranceiver to the external device insertion, only have only the outer receiver power supply end points of answering, provide small electric current specially to use outward to the receiver of answering.

For first kind of wireless tranceiver, utilize the electric current of out-put supply end points, external acoustic control switch-on device just has enough power supplys, and external battery more not; But this kind wireless tranceiver is a fraction, most wireless tranceiver belongs to the second way and powers to external device, under this kind situation, the acoustic control switch-on device is if will reach the not effect of external battery, Weak current that the receiver end points provided does not operate with regard to there being to select to utilize the wireless tranceiver socket to answer at home and abroad, at this moment, the Weak current that the receiver end points provided of answering outward just must use to answer outward receiver and acoustic control switch-on device simultaneously.

Through careful measurement, the electricity consumption of acoustic control switch-on device must be less than below the 40 μ A, ration the power supply intercom and must external battery of the nothing that can go for various labels and pattern by the restriction of strictness.

The purpose of this utility model is to provide a kind of must not use external battery, has the wireless tranceiver direct current supply acoustic control switch-on device of Design of power saving.

The utility model realizes that the key of above-mentioned purpose is: it comprises that an earphone/pick-up jack, pick-up power supply circuit, audio amplifier circuit, the output/indicating circuit of giving orders or instructions, sound control open words and begin circuit, the control circuit of giving orders or instructions, give orders or instructions mode selection switch circuit, calling being controlled circuit and soft-start circuit; The corresponding connection of input jack of described earphone/pick-up jack and antenna electricity intercom, wherein earphone jack directly is connected with the audio signal output end of wireless interspeaker; The wireless interspeaker power output end is minute two-way behind the G of output plug point, one the tunnel as giving orders or instructions to export/power supply of indicating circuit, also constitute simultaneously the signal feedback of giving orders or instructions to the loop of wireless tranceiver, another road is this device provisioning power supply by soft-start circuit; Through the MTC+ of earphone/pick-up jack input, deliver to audio amplifier circuit by the audio signal of microphone pickup, after this audio signal amplification,, divide two the tunnel to deliver to the give orders or instructions output/indicating circuit and the control circuit of giving orders or instructions respectively again in the C point in B point minute two tunnel, a tunnel; Another road is sent into sound control and is opened words beginning circuit; The described mode selection switch circuit of giving orders or instructions comprises switch SW 2, SW1 and triode Q8; Described triode Q8 base stage opens words beginning circuit output end E with acoustic control and is connected, and the E point is positive output when audio signal output is arranged, and can make triode Q8 conducting; Described triode Q8 emitter is connected with a fixed contact of switch SW 1, collector electrode G point same as above is connected, described switch SW 2 two ends are connected with another fixed contact of G point and switch SW 1 respectively, the moving contact of described switch SW 1 is connected with the output F of the described control circuit of giving orders or instructions, and the F point is positive output when audio signal is arranged; Between F point and earth terminal, be connected to a charging capacitor G9, the F point is connected with control end-triode Q4 base stage in the calling being controlled circuit, when the absence of audio signal is exported, capacitor C 19 is discharged to triode Q4 can't conducting the time, another triode of calling being controlled circuit ends thereupon, cut off power supply circuits, make this device transfer accepting state automatically to.

The utility model is compared with traditional acoustic control switch-on device, have following advantage: the utility model is designed a new power-saving circuit, the acoustic control switch-on device that uses this circuit design to form, can intercept, utilize wireless tranceiver itself to offer external earphone, part in the employed electric current of words receiver operates, this new acoustic control switch-on device is to be in great demand most at general commercially available, modal wireless tranceiver designs, develops, so only need to change the specification of plug and some parts, just can arrange in pairs or groups multiple label and type use.

The drawing explanation:

Fig. 1 is that wireless interspeaker described in the utility model is directly powered, the block diagram of acoustic control switch-on device.

Fig. 2 is that wireless interspeaker described in the utility model is directly powered, the circuit embodiments figure of acoustic control switch-on device.

Circuit description of the present utility model is as follows:

The external words receiver in this unit is moved close to somebody's ear the pick-up of machine and is inserted the earphone/MIC jack of this unit; And output plug is linked to the input jack of wireless tranceiver (hereinafter referred to as mobile phone).

The audio signal that is received by mobile phone through the A of the output plug of this unit point through square A commissure to earphone/MIC jack, then can hear the signal that is received by earphone.

Power supply minute 2 the tunnel, the one tunnel gives orders or instructions as square D to export/power supply of indicating circuit after the G of the output plug of this unit point is obtained from mobile phone, simultaneously for giving orders or instructions the loop of signal feedback to mobile phone; One the tunnel sends into the power supply of square G soft-start circuit as this unit.

By the audio signal of contact piezoelectric microphone pickup after the MIC+ that the hole earphone/MIC of square B pick-up power supply circuit inserts imports this unit in B point minutes 2 tunnel, one the tunnel delivers to square C audio amplifier circuit, after this audio signal amplified, minutes 2 the tunnel deliver to square D output/indicating circuit and the square F control circuit of giving orders or instructions of giving orders or instructions respectively again in the C point; One the tunnel sends into square E acoustic control opens words beginning circuit.

SW1 in square F-1 is cut in the VOX acoustic control and opens the words place, do not give orders or instructions if having, then pick-up does not pick up audio signal to the B point, because of B point absence of audio signal, square E is failure to actuate, be the no positive output of E point, make Q8 (the words automatic switch is opened in acoustic control) among the square F-1 be failure to actuate and not to the C19 charging, then the current potential on the C19 can't make the Q4 action; Square C does not have and amplifies action on the other hand, C point no change then, and then square D is failure to actuate, so LED does not work; And the absence of audio signal exports mobile phone to.The audio signal of not having amplification equally because of the C point, thus the F of square F point no-output, not to C19 charging, then Q4 attonity.

When giving orders or instructions, the microphone pickup audio signal is to the B point, then square E action, and promptly E point has positive output, makes Q8 acoustic control among the square F-1 open the action of words automatic switch and to the C19 charging, and then the current potential on the C19 rises Q4 is moved; Square C audio signal that B is ordered is amplified to the C point on the other hand, then square D action, and LED is bright; And the audio signal of amplification feeds back to the output plug of this unit via square D C point exports mobile phone to.

Finish when giving orders or instructions, because of pick-up does not pick up audio signal to the B point, make square E be failure to actuate, be the no positive output of E point, then the Q8 acoustic control among the square F-1 open words automatic switch be failure to actuate, this moment, C19 began discharge, and when the current potential on the C19 drops to when Q4 can't be moved, then this unit becomes accepting state automatically.

SW1 in square F-1 is cut in conversation place of PTT button, if do not click SW2 (PTT) push-button switch, promptly not to the C19 charging, then the current potential on the C19 can't make the Q4 action, no matter have or not this moment gives orders or instructions, and then this unit absence of audio signal exports mobile phone to.

When clicking SW2 but do not give orders or instructions, promptly the current potential on C19 charging and C19 makes the Q4 action and prepares signal is sent.But do not take because of pick-up and to get audio signal, make square C not have the action of amplification to the B point, C point no change then, then square D is failure to actuate, so LED does not work and this unit absence of audio signal exports mobile phone to; And because of the C point does not have the audio signal of amplifying, so the F of square F point no-output is not charged to C19 simultaneously.Though so Q4 has moved and prepared signal is sent, this unit absence of audio signal exports mobile phone to.And because of the C19 continuous discharge, when the current potential on the C19 drops to when Q4 can't be moved, then this unit becomes accepting state automatically.

After meeting SW2 and when giving orders or instructions, the microphone pickup audio signal is to the B point, and the audio signal of B being ordered by square C is amplified to the C point, then square D action, LED bright and with the audio signal of amplifying feed back to this unit output plug it＜C point exports mobile phone to; And export via the F point of square F because of the audio signal that the C point amplifies, continue charging to C19 simultaneously, make Q4 perseveration during giving orders or instructions.

Finish when giving orders or instructions,, square C is not had amplify action because of pick-up does not pick up audio signal to the B point, C point no change then, then square D is failure to actuate, so LED does not work and this unit absence of audio signal exports mobile phone to; And because of the C point does not have the audio signal of amplifying, so the F of square F point no-output is not charged to C19 simultaneously.Then C19 begins discharge, and when the current potential on the C19 drops to when Q4 can't be moved, then this unit becomes accepting state automatically.

Claims

A wireless tranceiver directly power, the acoustic control switch-on device, it is characterized in that: it comprises that an earphone/pick-up jack, pick-up power supply circuit, audio amplifier circuit, the output/indicating circuit of giving orders or instructions, sound control open words beginning circuit, the control circuit of giving orders or instructions, give orders or instructions mode selection switch circuit, calling being controlled circuit and soft-start circuit; The corresponding connection of input jack of described earphone/pick-up jack and antenna electricity intercom, wherein earphone jack directly is connected with the audio signal output end of wireless interspeaker; The wireless interspeaker power output end is minute two-way behind the G of output plug point, one the tunnel as giving orders or instructions to export/power supply of indicating circuit, also constitute simultaneously the signal feedback of giving orders or instructions to the loop of wireless tranceiver, another road is this device provisioning power supply by soft-start circuit; Through the MTC+ of earphone/pick-up jack input, deliver to audio amplifier circuit by the audio signal of microphone pickup, after this audio signal amplification,, divide two the tunnel to deliver to the give orders or instructions output/indicating circuit and the control circuit of giving orders or instructions respectively again in the C point in B point minute two tunnel, a tunnel; Another road is sent into sound control and is opened words beginning circuit; The described mode selection switch circuit of giving orders or instructions comprises switch SW 2, SW1 and triode Q8; Described triode Q8 base stage opens words beginning circuit output end E with acoustic control and is connected, and the E point is positive output when audio signal output is arranged, and can make triode Q8 conducting; Described triode Q8 emitter is connected with a fixed contact of switch SW 1, collector electrode G point same as above is connected, described switch SW 2 two ends are connected with another fixed contact of G point and switch SW 1 respectively, the moving contact of described switch SW 1 is connected with the output F of the described control circuit of giving orders or instructions, and the F point is positive output when audio signal is arranged; Between F point and earth terminal, be connected to a charging capacitor G9, the F point is connected with control end-triode Q4 base stage in the calling being controlled circuit, when the absence of audio signal is exported, capacitor C 19 is discharged to triode Q4 can't conducting the time, another triode of calling being controlled circuit ends thereupon, cut off power supply circuits, make this device transfer accepting state automatically to.