CN201550228U - Visible interphone with warning function - Google Patents

Visible interphone with warning function Download PDF

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Publication number
CN201550228U
CN201550228U CN2009202608444U CN200920260844U CN201550228U CN 201550228 U CN201550228 U CN 201550228U CN 2009202608444 U CN2009202608444 U CN 2009202608444U CN 200920260844 U CN200920260844 U CN 200920260844U CN 201550228 U CN201550228 U CN 201550228U
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CN
China
Prior art keywords
amplifier
power supply
circuit
video intercom
triode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009202608444U
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Chinese (zh)
Inventor
李亮
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TCL Corp
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TCL Corp
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Filing date
Publication date
Application filed by TCL Corp filed Critical TCL Corp
Priority to CN2009202608444U priority Critical patent/CN201550228U/en
Application granted granted Critical
Publication of CN201550228U publication Critical patent/CN201550228U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a visible interphone with the warning function, which comprises a visible talk-back circuit arranged in the interphone body, and is characterized in that the visible interphone further comprises a warning circuit integrated with the talk-back circuit into a whole and arranged in the body, wherein the warning circuit is connected with a direct current supply on the talk-back circuit for supplying power for the warning circuit, and a sensor probe is mounted on the visible interphone to ensure the security function of households. When a probe mounted indoors detects a danger signal, the probe triggers a buzzer on the warning circuit and emits an alarming sound, and reminds a host to detect the ambient environment to effectively prevent accidents, thereby ensuring life and property safety for people.

Description

A kind of video intercom with warning function
Technical field
The utility model relates to the visible dialogue system field, relates in particular to a kind of video intercom with warning function.
Background technology
The basic functions of the visible dialogue system of releasing on the market is exactly the two-way call that realizes between visitor and the resident family, and the video camera that can install by the doorway be the image that resident family shows external visitor, judges whether to allow the visitor to enter for making things convenient for resident family.Simultaneously in order to protect the safety in places such as family, office, at the various alarms of indoor installation, as the smoke alarm that detection of fires, coal gas etc. are revealed, burglar alarm etc., but also alarm is not integrated in the product of video intercom inside.
The utility model content
The purpose of this utility model is that the defective that exists at above-mentioned prior art provides a kind of video intercom with warning function, can send alarm sound when detecting danger signal.
The technical solution of the utility model is as follows: a kind of video intercom with warning function, comprise and place the intrinsic video intercom circuit of video intercom, it is characterized in that: also comprising becomes one with described video intercom circuit places intrinsic warning circuit, described warning circuit connects the DC power supply on the described video intercom circuit, be used for to described warning circuit power supply, described warning circuit comprises power supply chip, transducer, first amplifier, alarm lamp, the described DC power supply of described power supply chip input termination, the output of described power supply chip connects the described transducer and the first amplifier reverse input end respectively, the positive input of first amplifier links to each other with described transducer, the output of described first amplifier connects described alarm lamp, is used for opening or closing and judge whether described transducer senses danger signal by described alarm lamp.
Described video intercom, wherein, described warning circuit also comprises second amplifier, the status indicator lamp and first triode, the positive input of described second amplifier links to each other with described DC power supply by a charging delay circuit, the described second amplifier reverse input end connects described power supply chip output, the output of described second amplifier connects the described status indicator lamp and first transistor base respectively, when the described second amplifier positive input obtains high potential, described status indicator lamp is bright, and first triode obtains forward bias voltage drop.
Described video intercom, wherein, described warning circuit also comprises second triode and the buzzer of connecting with described first triode, the base stage of described second triode is connected with the output of described first amplifier, the collector electrode of described second triode connects described buzzer, when described sensor sensing to danger signal, described alarm lamp is bright, the conducting simultaneously of described first triode and second triode makes described buzzer send alarm sound.
Described video intercom, wherein, described charging delay circuit comprises a resistance, a charging capacitor and a diode, be connected in series described charging capacitor after described resistance and the diode parallel connection, and, be used to make the positive input voltage of described second amplifier after the machine start, slowly to be increased to high level by described charging capacitor ground connection.
Described video intercom, wherein, described video intercom circuit comprises a transformation filter circuit, is used for the civil power alternating voltage is converted to described DC power supply, uses for described warning circuit.
Described video intercom, wherein, described DC power supply is the input that 12 volts of direct voltages access to described power supply chip, is 5 volts output voltage with the voltage transitions of importing by described power supply chip.
Described video intercom, wherein, described transducer is Smoke Sensor or infrared sensor.
The utility model is by connecting different sensor probes on video intercom; make family have the safety precaution function; when being installed in indoor probe and detecting danger signal by the buzzer on the warning circuit; send alarm sound; remind owner to check surrounding environment; prevent the generation of contingency effectively, thus protection people's the security of the lives and property.
Description of drawings
Fig. 1 is the utility model circuit connection diagram.
Embodiment
The utility model provides a kind of video intercom with warning function, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and advantage, below with reference to the accompanying drawing embodiment that develops simultaneously the utility model further described.
Video intercom with warning function, comprise and be integrated in intrinsic video intercom circuit 100 of video intercom and warning circuit 200, connect by the 12V power supply between video intercom circuit 100 and the warning circuit 200, be used for to warning circuit 200 power supplies, when the sensor sensing that links to each other with warning circuit 200 arrives danger signal, trigger the buzzer on the warning circuit, send alarm sound, the prompting owner is indoor dangerous.
As shown in Figure 1, civil power 220V alternating voltage is added on the power transformer T1, (transformer T1, diode D5, D6 and filter capacitor C7, C8) obtains the 12V direct voltage by the transformation filter circuit, is 9V through obtaining voltage behind the power supply chip P1, is used for powering to camera A4; After capacitor C 4 filtering are passed through in the audio signal process amplifier A2 output of audio frequency amplification chip (not shown) output again, give loud speaker A13; Vision signal that camera A4 captures and audio signal, be connected respectively on the Voice ﹠ Video input and output J1 of video intercom, the interface J1 of video intercom connects the 12V power supply respectively, ground connection, vision signal, audio signal, this circuit part is a prior art, does not do detailed description.
The utility model innovative point is that warning circuit 200 is integrated in the video intercom body, and utilizes the 12V direct voltage of video intercom circuit 100, by two series connection triodes conducting simultaneously in the warning circuit 200 buzzer is triggered; Warning circuit 200 resulting 12V DC power supply are by the transformation filter circuit on the video intercom circuit civil power 220V alternating voltage to be become behind the 12V direct voltage input voltage as power supply chip P2, through its output of power supply chip P2 conversion back voltage be 5V, the output of power supply chip P2 links to each other with one of them interface of alarm sensor SENSOR, be used for powering to alarm sensor SENSOR, and the output of power supply chip P2 also links to each other with the reverse input end of the second amplifier IC1-B by series resistor R12, the positive input of the second amplifier IC1-B links to each other with the 12V DC power supply by a charging delay circuit, wherein, the charging delay circuit comprises resistance R 13, charging capacitor C6 and diode D4, be connected in series charging capacitor C6 after resistance R 13 and the diode D4 parallel connection, and by charging capacitor C6 ground connection; The positive pole of the output terminating diode D3 of the second amplifier IC1-B, ground connection behind the negative pole connecting resistance R11 of diode D3; The output of the second amplifier IC1-B also is connected to the base stage of the first triode Q3 by resistance R 10, the collector electrode of the first triode Q3 links to each other with the emitter of the second triode Q2, the grounded emitter of the first triode Q3, the collector electrode of the second triode Q2 joins with the buzzer BEEPER that connects the 12V DC power supply, the base stage of the second triode Q2 links to each other with the output of the first amplifier IC1-A with a current-limiting resistance R7 by a diode D2, the positive input of the first amplifier IC1-A links to each other with the non-earth terminal of divider resistance R1 and links to each other with a port of transducer, and the reverse input end of the first amplifier IC1-A links to each other with divider resistance R2 with adjustable resistance R3 and afterwards inserts the output of power supply chip P2; Also comprise two light-emitting diode D1 and D3 on the warning circuit 200, wherein alarm lamp is light-emitting diode D1, be shown as amber light during work, its positive pole links to each other with the first amplifier IC1-A output, ground connection behind the negative pole connecting resistance R5, status indicator lamp is light-emitting diode D3, is shown as green light during work, its positive pole connects the output of the second amplifier IC1-B, ground connection behind the negative pole connecting resistance R11.
The operation principle of warning circuit is: when video intercom is started shooting, the reverse input end voltage of the second amplifier IC1-B is 5V, at start initial stage second amplifier IC1-B positive input voltage less than its reverse input end voltage, the second amplifier IC1-B positive input connects the 12V DC power supply by a charging delay circuit, along with resistance R 13 is charged to capacitor C 6, the second amplifier IC1-B positive input voltage is slowly risen, after about 1 minute, the positive input voltage of the second amplifier IC1-B surpasses reverse input end voltage, cause second amplifier IC1-B output to change, the positive input voltage of second amplifier is slowly raise in machine start back, by low transition is high level, the light-emitting diode D2 green light that links to each other with the second amplifier IC1-B output is bright like this, illustrate when green light is bright that the first triode Q3 obtains normal forward bias voltage drop, triode Q3 obtains forward bias voltage drop, illustrate that triode Q3 is in normal operating conditions, promptly be in and treat conducting state, the first triode Q3 connects with the second triode Q2, so the second triode Q2 also is in normal operating conditions; Two triode Q3 and Q2 are the NPN triode, and when transducer was not sensed danger signal, the positive input voltage of the first amplifier IC1-A was low level, and this moment, the first triode Q2 was in cut-off state.When video intercom shuts down at every turn, the charging voltage of the capacitor C 6 in the charging delay circuit is discharged fast through diode D4, so all want 1-2 minute stand-by period when opening again again after each shutdown, light-emitting diode D3 green light just can be bright, and the delay that designs this time is for warning circuit 200 can just not reported to the police when just starting shooting.
In order to make transducer be in best sensitive state, transducer of the present utility model need be adjusted it when starting shooting the first time of dispatching from the factory, when transducer power on enter operating state after, the voltage that certain value is arranged on the divider resistance R1, pressure drop does not wait between 0.3-2V greatly, view sensor and deciding, adjusting adjustable resistance R3 makes amber light bright, when light-emitting diode D1 amber light is bright, again adjustable resistance R3 is adjusted till light-emitting diode D1 amber light is closed, the purpose of adjusting adjustable resistance is the quiescent direct current voltage that will excise resistance R 1, make about the about 0.2V of a little higher than positive input voltage of amplifier IC1-A reverse input end voltage, at this time sensitivity the best of transducer; By the adjustment after dispatching from the factory, make a little higher than positive input voltage of reverse input end voltage of amplifier IC1-A, so light-emitting diode D1 is in cut-off state, the amber light of light-emitting diode D1 does not work, there is not alarm signal, the meaning of light-emitting diode D1 is that alarm signal is promptly warned in the critical point that is used for display amplifier IC1-A, according to closing and open mode of light-emitting diode D1, judges whether transducer senses danger signal.
When sensor probe detects warning (as fire alarm or stolen), the danger signal that transducer output is sensed, voltage on the resistance R 1 raises at this moment, the positive input voltage of amplifier IC1-A in the warning circuit is risen, and be higher than the reverse input end voltage of amplifier IC1-A, make its output be high potential state, make light-emitting diode D1 conducting, light-emitting diode D1 amber light is bright, high voltage charges to capacitor C 5 along diode D2, triode Q2 is switched at this moment, thereby triggers buzzer BEEPER work, sends alarm sound.When alarm signal is eliminated, be to be used for playing the protective resistance effect to capacitor C 5 discharges with charging capacitor C5 parallel resistor R6 effect.
Transducer in the utility model fireproof alarming circuit can use Smoke Sensor, and its transducer can use infrared sensor when antitheft.
It should be noted that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (7)

1. video intercom with warning function, comprise and place the intrinsic video intercom circuit of video intercom, it is characterized in that: also comprising becomes one with described video intercom circuit places intrinsic warning circuit, described warning circuit connects the DC power supply on the described video intercom circuit, be used for to described warning circuit power supply, described warning circuit comprises power supply chip, transducer, first amplifier and alarm lamp, the described DC power supply of described power supply chip input termination, the output of described power supply chip connects the described transducer and the first amplifier reverse input end respectively, the positive input of first amplifier links to each other with described transducer, the output of described first amplifier connects described alarm lamp, be used for judging by out or closing of described alarm lamp whether described transducer senses danger signal.
2. video intercom according to claim 1, it is characterized in that, described warning circuit also comprises second amplifier, the status indicator lamp and first triode, the positive input of described second amplifier links to each other with described DC power supply by a charging delay circuit, the described second amplifier reverse input end connects described power supply chip output, the output of described second amplifier connects the described status indicator lamp and first transistor base respectively, when the described second amplifier positive input obtains high potential, described status indicator lamp is bright, and first triode obtains forward bias voltage drop.
3. video intercom according to claim 2, it is characterized in that, described warning circuit also comprises second triode and the buzzer of connecting with described first triode, the base stage of described second triode is connected with the output of described first amplifier, the collector electrode of described second triode connects described buzzer, when described sensor sensing to danger signal, described alarm lamp is bright, the conducting simultaneously of described first triode and second triode makes described buzzer send alarm sound.
4. video intercom according to claim 2, it is characterized in that, described charging delay circuit comprises a resistance, a charging capacitor and a diode, be connected in series described charging capacitor after described resistance and the diode parallel connection, and, the positive input voltage of described second amplifier is slowly raise in machine start back by described charging capacitor ground connection.
5. video intercom according to claim 1 is characterized in that, described video intercom circuit comprises a transformation filter circuit, is used for the civil power alternating voltage is converted to described DC power supply, uses for described warning circuit.
6. video intercom according to claim 5 is characterized in that, described DC power supply is the input that 12 volts of direct voltages access to described power supply chip, is 5 volts output voltage with the voltage transitions of importing by described power supply chip.
7. video intercom according to claim 1 is characterized in that, described transducer is Smoke Sensor or infrared sensor.
CN2009202608444U 2009-11-25 2009-11-25 Visible interphone with warning function Expired - Lifetime CN201550228U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202608444U CN201550228U (en) 2009-11-25 2009-11-25 Visible interphone with warning function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202608444U CN201550228U (en) 2009-11-25 2009-11-25 Visible interphone with warning function

Publications (1)

Publication Number Publication Date
CN201550228U true CN201550228U (en) 2010-08-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202608444U Expired - Lifetime CN201550228U (en) 2009-11-25 2009-11-25 Visible interphone with warning function

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103746716A (en) * 2013-11-30 2014-04-23 成都兆益科技发展有限责任公司 Interphone with GPS positioning
CN104320630A (en) * 2014-11-15 2015-01-28 聊城职业技术学院 Window intercom
CN106131504A (en) * 2016-08-22 2016-11-16 李文杰 A kind of video intercom with warning devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103746716A (en) * 2013-11-30 2014-04-23 成都兆益科技发展有限责任公司 Interphone with GPS positioning
CN104320630A (en) * 2014-11-15 2015-01-28 聊城职业技术学院 Window intercom
CN106131504A (en) * 2016-08-22 2016-11-16 李文杰 A kind of video intercom with warning devices

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Granted publication date: 20100811