CN203480629U - Shooting and recording security device of bridge control type - Google Patents
Shooting and recording security device of bridge control type Download PDFInfo
- Publication number
- CN203480629U CN203480629U CN201320391736.7U CN201320391736U CN203480629U CN 203480629 U CN203480629 U CN 203480629U CN 201320391736 U CN201320391736 U CN 201320391736U CN 203480629 U CN203480629 U CN 203480629U
- Authority
- CN
- China
- Prior art keywords
- lockhole
- unit
- bridge
- power amplifier
- electric capacity
- 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 - Fee Related
Links
Images
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a shooting and recording security device of a bridge control type, and belongs to the technical field of burglary prevention. The device consists of a lockhole protection plate, a shooting and recording control circuit of the bridge control type, an alarm starter, and a power amplifier effect unit. A touch sheet is disposed on a lockhole, and covers the lockhole and the alarm starter. When a person tries to crack the lockhole and breaks into a room, a touch signal is generated the instant the lockhole protection plate is contacted. The touch signal is amplified through the shooting and recording control circuit of the bridge control type, and starts the power amplifier effect unit for shooting and recording and on-site alarm. If the person is not stopped, the alarm starter generates an alarm starting signal the instant the lockhole protection plate just loosens, wherein the alarm starting signal can also starts the power amplifier effect unit. The device provided by the utility model is excellent in shooting and recording performances, is good in the part of an alarm system, and further improves the performance of antitheft devices.
Description
Technical field
Belong to technical field of burglary prevention.
Background technology
Anti-theft safety door is security personnel's equipment of one family indispensability; but anti-theft safety door major defect is a kind of protection of passive type; the product supporting with anti-theft safety door is a lot; video recording monitor is exactly one of them; it can monitor the various people in this region and the thing of generation at any time, to understanding the thing occurring at that time, will play very important effect.
Record (memory) function that video recording monitor is produced is the due critical function of monitor, and just " return visit " just can not the front situation about occurring of understanding case afterwards there is no record.In important public place, be generally to adopt whole day inspecting and recording, if but for family, adopt the mode of this product, may whole day be all substantially useless record, bothersome, take resource.To some non-public place ，Ru families, the generation that common product adopts event just start to produce shooting record, (because such processing easily reaches with requirement), although such function is very important, but situation before cannot understanding case also becomes a kind of very large deficiency.Because having before concluding a case one is to perform in advance security measures after record, gaining the initiative property, generation event after even overcoming.The 2nd, have conclude a case before record, to the understanding of event more comprehensively.So there is the front shooting of case writing function important in inhibiting.
Summary of the invention
Fundamental purpose of the present invention is for making up the shortcoming of anti-theft safety door, utilize prior art achievement, new measure is proposed, become a kind of novel antitheft series products, the unessential part of shooting record energy automatic fitration, when there is something special, the record of making a video recording in time, has further promoted the performance of anti-theft product.
The technical solution used in the present invention is:
1, electric bridge control formula is shot with video-corder protector by lockhole screening glass, and electric bridge control formula is shot with video-corder control circuit, alarming starter, and power amplifier effect unit forms jointly.
Power amplifier effect unit is comprised of video camera recorder and onsite alarming.
Onsite alarming is the base stage that the output of voice sheet has connected preposition amplifier tube, the grounded emitter of preposition amplifier tube, collector is connected in the base stage of the PNP pipe that forms power amplifier, the base stage that forms the PNP pipe of power amplifier has also connect one end of power amplifier level pull-up resistor, the pull-up resistor other end connects to form the base stage of the NPN pipe of power amplifier, the PNP pipe that forms power amplifier manages with NPN the commissure electric capacity of central point series winding that emitter is connected, one end of another termination loudspeaker of commissure electric capacity, the other end ground wire of loudspeaker, the NPN pipe Integrated electrode that forms power amplifier is received electric bridge control formula and is shot with video-corder in control circuit on second triode of amplifying unit.
Electric bridge control formula shoot with video-corder control circuit by transformer unit, the preposition unit of bridge type, penetrate with isolated location, amplifying unit, the rest-set flip-flop that band shows, time controller, shooting manually boots switch and jointly forms.
With transformer unit, connected the preposition unit of bridge type, the preposition unit of bridge type has connected to be penetrated with isolated location, penetrates with isolated location and has connected amplifying unit, and amplifying unit has connected onsite alarming unit; With the wires lockhole screening glass sheet metal of ining succession, the other end of this metal wire has connected the preposition unit of bridge type after having connected a commissure electric capacity.
The connection of transformer unit is; The positive pole that connects respectively two diodes with the secondary two ends of transformation, secondary center is taken out and is closed ground connection, after the negative pole of two diodes links together, has connected two-way, and the first via has connected working power, the second tunnel has connected the positive pole of an electric capacity, the minus earth of this electric capacity.
The preposition unit of bridge type, is comprised of 4 diodes and 4 electric capacity; With two diode D1 and D2, be composed in series a new branch road, with another two diode D3 and D4, be composed in series another new road, with the positive pole of these two new branch roads, be connected to, negative pole links together, become a kind of bridge rectifier circuit, wherein use the tie point in two diode D1 and D2 series arm, as the outside output terminal in the preposition unit of bridge type, with the tie point in another two diode D3 and D4 series arm, connect ground wire.
With electric capacity C1 and C2, one end connect the positive terminal of bridge rectifier circuit, the other end of capacitor C 1 has connected one end of primary, the other end of capacitor C 2 has connected the other end of primary; The one end that has connected again two capacitor C 3 and C4 in one end of the negative pole of bridge rectifier element, capacitor C 3 other ends have connected one end of primary, and the other end of capacitor C 4 has connected the other end of primary.
Penetrate with isolated location, a triode and a resistance, consist of, by the base stage of the triode in this grade, connected the output terminal of the preposition unit of bridge type, the collector of this pipe connects power supply, and emitter-base bandgap grading has been connected after a resistance as output terminal at the corresponding levels.
Amplifying unit, by first NPN triode and second PNP triode, jointly formed, with first transistor base, connect and penetrate the output terminal with isolated location, grounded emitter, collector has been connected and has been connected the base stage of second triode after a resistance, the emitter of second triode connects power supply, and collector is as output terminal at the corresponding levels; This output terminal has connected in power amplifier effect unit.
The one end that has connected lockhole screening glass with a wires, the other end has been connected to have connected after an electric capacity and in the preposition unit of bridge type, has been connected two utmost point positive terminals.
Alarming starter is a lockhole switch, is arranged on lockhole top, lockhole screening glass below, and lockhole screening glass is oppressed the button of lockhole switch after being fixed on door, and lockhole switch contact is drawn with wire, has connected in power amplifier effect unit.
2,4 capacitance parameters that connect in the preposition unit of bridge type are consistent, and adopt high-tension electric capacity; Or by consistent two capacitances in series of use of amount of capacity together, form a new electric capacity, as method forms 4 new equivalent capacitys altogether, replace respectively 4 Single Capacitances in the preposition unit of bridge-type.
3, the installation site of lockhole screening glass is on anti-theft safety door lockhole, and lockhole is covered together with alarming starter.
4, the NPN pipe that forms power amplifier in onsite alarming is all the large power triode of selecting with PNP pipe.
5, the voice sheet in onsite alarming is alert sound sheet.
For having a clear understanding of the meaning of the technical program, first will make the following instructions:
It one is that normal door is opened the door without mechanical key that inventor has been fruitful, but the mode of opening the door with electronics telecontrol engineering or phone.When normal door, be installed on the propulsion system in door, will promote lockset action, realization is opened the door.Meanwhile, still retained the form that mechanical key opens the door, its objective is and when automatic system goes wrong, can have a kind of opening the door to make up.This be if opened the door with mechanical key, and great majority are to want by joining the situation of mechanical key crime, are also the situations that needs telephone call.And a few cases is own oneself to want the situation of opening the door with mechanical key because electrical equipment goes wrong, but this situation is own clearly situation on the scene, produces alert sound oneself and does not also feel fearful and nervous.
For this reason, the existing meaning to each technical measures of the present invention, concrete condition is further explained as follows:
One, the present invention design is that a kind of band has levels and has the alarming device of several functions.
1. the first level is pre-warning: fundamental purpose is to prevent the heart that has crime, or firm crowd when bud.Function is to rigidly connect and touch above lockhole after cover plate at the hand when crime, sound system will send pre-warning, this warning is more neutral, as the sound can send " please noting ", or the language such as " please not staying at this " is prevented, by the benefit of gender neutral language, be to may criminal causing very large psychological pressure, but can not damage being not intended to person, to neighbours, more can not cause in terror, because causing consequence, pre-warning and crime also have very large gap, can produce so very large benefit, be to produce pressure very greatly at heart to criminal, the generation of pre-warning can make him know clearly, in room, early there is preparation, if continued, must there is " below " waiting for, by have thereby hint obliquely at later difficult, probably impel it to stop as early as possible, halt at this point, so played the initiatively effect of protection.
The protection of 2, the second levels is warning devices, is mainly the criminal for the pre-warning of not preventing; if think formal damage lock port lid; while entering house by cracking lockhole, will be subjected to displacement by the shift knob of lockhole cap lower compression, and send the signal of formal warning.
3. it is mainly double function, the one, and shooting record, the 2nd, onsite alarming.
Two. principle and effect that shooting record produces:
1, touch principle: when no touch signal, the bridge diagram no-output that four electric capacity in communication channel form, the preposition unit of bridge type, no-output.When having touch signal, the bridge diagram parameter generation great change that former four electric capacity form, there is alternating current output, passed through by diode D1, D2, D3, after D4 is the bridge rectifier circuit of rectifier cell (11 in Fig. 1) composition in electric bridge, there is direct current output, through penetrating with isolated location, amplifying unit has finally encouraged onsite alarming unit and photorecorder after amplifying.
2, can preset with the rule of time period and initiatively make a video recording, be artificially will be set on one's own initiative a certain period time above, and now video camera records ambient conditions by automatic camera, rather than will contact lockhole cover plate.This situation is mainly used for the active monitoring of people to environment in family.It should be noted that it is whole shootings of 24 hours all day that this period comprises.
3, produce the principle that overall process is recorded in shooting: although hand has left lockhole top cover plate after forcing open the door, but above lockhole and the alarm switch contact being pressed under cover plate is not oppressed by cover plate, variation has occurred, and in this Fig. 1, lockhole switch 30 is closed, so opened video camera job record.
4, produce after shooting is recorded and have displaying principle: in Fig. 1,28 is a kind of rest-set flip-flops with demonstration, thereby there is Memorability, when each or door has output to open electronic switch 26, all can trigger the rest-set flip-flop of memory, once so after rest-set flip-flop is triggered, additional LED can luminescence display.
5, the principle of shooting record writing time before generation case: when each or door has output to open electronic switch 26, have signal to trigger time controller, so can automatically record the moment of generation.
6, circuit is outstanding reliable: sensitive reliable.
(1), the preposition unit of bridge type; performance is good: its reason is when no touch signal; 4 capacitance parameters of electric bridge are consistent; internal current balance; the output of bridge-type output terminal no signal; after hand contact chip; there is serious variation in the capacitance parameter that contains lockhole screening glass end; so output terminal has signal output; bridge diagram and bridge rectifier circuit all belong to classical circuit in circuit, theoretical show with test, and this circuit has very high sensitivity; and circuit is very reliable and stable, for the present invention has established fine basis.
(2), isolated location played matching effect well between the preposition unit of bridge type and amplifier stage, further promoted the performance of measure of the present invention.This grade of the first has very high input impedance, played good buffer action in two-stage.It two is that output impedance is low, and the excitation of rear class is had to very strong surplus.
(3), amplifier stage has outstanding performance.In this grade of unit of the first, the door of NPN triode input is very low, only has 0.7 volt.The 2nd, second three utmost point of this grade have very strong amplifying power, because NPN triode and PNP triode have formed complementary relationship, and the 3rd, second PNP triode of amplifier stage has very strong carrying load ability, formed the form of electronic switch.
(4) it is that operating voltage can have relatively wide scope that, in the present invention active all adopts the benefit of triodes, thereby can save mu balanced circuit in working power, and its benefit has two, the first, and circuit simplifies, more reliable.The secondth, if while adopting three end contain integrated regulator, when civil power changes when too high, fragile.
(5), when no touch signal, system power saving has also reduced having " electrical wear " of element, the reliability of having promoted circuit from another angle simultaneously.
The lockhole switch of three, pacifying in measure scheme one, it is the key component that warning of the present invention starts, also be a bright spot of putting of the present invention, because after the existing achievement of this part and inventor cooperatively interacts, warning of the present invention has been accomplished more scientific, also be the place different from a lot of alarms, its reason is:
The one, can generation not make us terrified wrong report, this is the most important.Its reason is, the door that owner is absent from the scene is within doors opened (with improper, opening), is all crime behaviors, and warning is now all very significant.
The 2nd, very reliable, because the opening the door at closing time of normal life, do not need artificial additional move, do not affect the normal habits and customs of people, thereby do not affect the normal operation of the each starting of security system.
The 3rd, warning starting switch is sensitive and reliable, can when crime behavior is not accomplished, just not report to the police, thereby loss is reduced to minimum.The initiating signal of reporting to the police because the switch contact when lockhole cap is becoming flexible on lockhole will change.
Four, the principle of onsite alarming is: by a triode, formed the prestage that sound equipment amplifies, by a PNP and NPN triode, formed complementary circuit audio frequency has been carried out to power amplifier, when having pre-alarm signal, the power supply of having opened this part is controlled in its output, so have voice to produce, due to this electric circuit constitute be an OTL rather than OCL circuit, so debugging is simple, and have element not perishable, and the higher advantage of efficiency.
After the invention process, anti-theft security goalkeeper presents a kind of brand-new looks, has following outstanding advantage:
1, after the invention process; anti-theft safety door and alarm have been realized the combination of science; the advantage that has possessed two kinds of protectors; usually both people can be kept outside the door; when running into other people and committing a crime; can send two kinds of warnings; to increasing " the initiatively protectiveness " of anti-theft safety door; (its implication is; function of the present invention will suppress crime behavior generation; and whether waiting for passively that it destroys) and be all very significant, the situation of the passive defence of anti-theft safety door so this product is through with completely, has promoted security personnel's performance of anti-theft safety door all sidedly.
2, shooting record performance is excellent.The one, before case, record is given prominence to the key points.The 2nd, after having record, can automatically show the owner of announcement, can " not leak visit ".The 3rd, there is to do cases and can record overall process.The 4th, shooting records various ways.The 5th, when recording, there is time of generation.These 5 meanings have return visit and save time, economize energy, save device resource etc. serial advantage, have really realized workable feature and have been.(in the situation of work strain, family can not impunity carry out " returns visit " to shooting, more impossible in return visit, watch a lot of useless impunities general to record).Thereby for understanding family public security present situation, there is very important positive role.
3, warning system partial properties is very excellent, for alarm, is most valuable, embodies in the following areas:
The one, warning system can not reported by mistake completely.Because after coordinating with existing achievement, there is automatic recognition property.The warning producing when owner is absent from the scene may be only crime behavior.Otherwise the behavior of not committing a crime, switch can not send signal, at this moment because the structures shape of switch is installed.Due to the intrinsic property of switch, when being subject to compressing and not suffering oppression, shift knob there is to occur the variation of contact.
The 2nd, reliable, its reason one is, user is closing the door when opening without any need for other additional move, thereby warning system is at any time all in a kind of " highly waiting " state, do not need any preliminary work, the 2nd, the malfunctioning chance of mechanical switch is far superior to electronic component.
The 3rd, easy to use.After installation, do not affect normal habits and customs completely.If increased trouble with former life, the shortcoming of obviously bringing to people is or is to use inconvenience, or forgotten necessary operation and bring the malfunction of warning or malfunctioning.
The 4th, protection is tight, has laid special stress on protecting the practice that cracks lockhole.
4, the power of onsite alarming is large, and circuit is simple, and debugging is convenient, power saving.
Accompanying drawing explanation
Fig. 1 is that the electric bridge control formula in the present invention is shot with video-corder control circuit and power amplifier effect unit basic diagram.
In figure: 01, the primary side of transformer; 02, the out secondary of transformer; 03, full-wave rectification diode; 04, rectifying and wave-filtering electric capacity; 05, lockhole screening glass; 06, commissure electric capacity; 07, the electric capacity in electric bridge one; 08, the electric capacity in electric bridge two; 09, the electric capacity in electric bridge three; 10, the electric capacity in electric bridge four; 11, the rectifier cell in electric bridge; 12, penetrate with isolated location; 13, protective resistance; 14, first triode in amplifying unit; 15, the commissure resistance of two triodes in amplifier stage; 16, second triode in amplifying unit; 17, onsite alarming unit; 25, shoot with video-corder and start or door; 26, electronic switch; 27, video camera recorder; 28,, there is the rest-set flip-flop of demonstration in generation; 29, time controller; 30, lockhole switch; 31, manual control switch.
Fig. 2 is the electronic-circuit diagram after measure 2 of the present invention is implemented.
In figure: 01, the primary side of transformer; 02, the out secondary of transformer; 03, full-wave rectification diode; 04, rectifying and wave-filtering electric capacity; 05, lockhole screening glass; 06, commissure electric capacity; 07, one of electric capacity in electric bridge; 08, two of the electric capacity in electric bridge; 09, three of the electric capacity in electric bridge; 10, four of the electric capacity in electric bridge; 11, the rectifier cell in electric bridge; 12, penetrate with isolated location; 13, protective resistance; 14, first triode in amplifying unit; 15, the commissure resistance of two triodes in amplifier stage; 16, second triode in amplifying unit; 17, an alarm unit; 19, the electric capacity that one of electric capacity in electric bridge newly adds; 20, two of the electric capacity in the electric bridge electric capacity that newly add; 21, three of the electric capacity in the electric bridge electric capacity that newly add; 22, four of the electric capacity in the electric bridge electric capacity that newly add; 25, shoot with video-corder and start or door; 26, electronic switch; 27, video camera recorder; 28,, there is the rest-set flip-flop of demonstration in generation; 29, time controller; 30, lockhole switch; 31, manual control switch.
Fig. 3 is the scheme of installation of lockhole screening glass and lockhole switch.
In figure: 06, lockhole screening glass; 390, lockhole; 391, the printed panel of welding lockhole switch; 30, lockhole switch; 395, lockhole switch extension line; 397, anti-theft safety door.
Fig. 4 is the onsite alarming circuit diagram in power amplifier effect unit.
In figure: 395, lockhole switch extension line; 301, neutral voice sheet; 302, preposition amplifier tube; 303, preamplifier state load dual-use function resistance; 304, the PNP pipe that forms power amplifier; 305, the NPN pipe that forms power amplifier; 306, commissure electric capacity (OTL circuit capacitance); 26, electronic switch; 308, loudspeaker.
Fig. 5 is that each several part is related to block diagram.
In figure: 05, lockhole screening glass; 38, electric bridge control formula is shot with video-corder control circuit; 30, lockhole switch; 31, manual control switch; 25, shoot with video-corder and start or door; 26, electronic switch; 27, video camera recorder; 39 onsite alarmings.
Embodiment
Fig. 1 to 5 has described specific embodiment of the invention example.
One, according to Fig. 3 embodiment, the cover plate of covering lockhole being installed, is also lockhole screening glass and the lockhole switch in indication function.
1, with a hard material, be processed into strike out than the large four directions of lockhole lid and become lockhole screening glass of the present invention, lockhole screening glass is also the cover plate of covering lockhole.
2, at the periphery of lockhole screening glass (cover plate), make a call to four apertures, the place punching that cover plate is installed at shop front lockhole is corresponding with it, the mounting hole tapping of the shop front.
4, between lockhole screening glass and door, add hollow cushion ring, allow hollow place expose lockhole.
5, lockhole screening glass is fixed in the shop front.Fixedly time, should notice between lockhole screening glass and door fixedly time that pad last layer insulant is as plastic washer.
6, with one end of a wire, connect lockhole screening glass, the other end has connected the electric bridge being positioned in door and has warned in electronic circuit in advance.
7, lockhole switch is welded on a bar printing plate, the printed panel that has welded switch is fixed on door lock hole.
8, lockhole switch contact is drawn to have connected onsite alarming unit and shot with video-corder shooting with video-corder in unit with wire and is started or door.
9, lockhole screening glass is oppressed lockhole shift knob after fixing.
Two, installation and debugging electronic circuit;
1, selectors; The preposition unit of bridge type electric capacity used adopts withstand voltage high electric capacity kind, or the form of employing measure 2, by higher capacitance, is together in series, and becomes a new electric capacity.But it should be noted, no matter 4 electric capacity in electric bridge adopt one or two series connection form, and it is basically identical all should selecting its capacity parameter.Bridge diode in electric bridge also should select the kind that back-pressure grade is high.Onsite alarming unit can be selected one, or two, or a plurality of etc., can be selected by the requirement of oneself, as onsite alarming, telephone call, automatic camera etc. function.
2, welding: the mode according to Fig. 1 or Fig. 2 is welded.
3, debugging:
(1), test and the adjustment preposition unit of bridge type: with the voltage gear of multimeter, survey and penetrate penetrating with output with triode in isolated location; when hand contacts coverage sheet on lockhole and is lockhole screening glass, emitter follower is not output as low level; below 0.5 volt; and integrated circuit the 2nd pin should be exported a high position when the coverage sheet on lockhole is touched in hand contact; whether equally the nonconforming emphasis of answering changes four capacitance values of electric bridge; if desired; the capacity inspection of available electric bridge to four electric capacity, whether the same referring to seeing number.
Test and adjustment amplifier stage unit: with the voltage between PNP transistor emitter in this grade of voltage detecting of multimeter and collector, when prestage integrated circuit no-output, voltage should be supply voltage substantially, and while having touch signal, voltage should be less than 0.5 volt nonconformingly should adjust the commissure resistance between two triodes in this grade.
Three, Detection and adjustment onsite alarming unit effect:
1, when hand contact touch sheet, each onsite alarming unit should produce corresponding functional effect, first onsite alarming unit is onsite alarming, should send early warning sound, second unit is automatically to open camera function, and video camera should start, when hand leaves touch sheet, corresponding function should stop, otherwise should adjust the adjustment part in corresponding unit.
2, adjust the time control section of time-controlling apparatus, the time period that simulation is adjusted, video camera recorder should be worked.Otherwise should check and start or door.
3, manually opened manual control switch 31, video camera recorder should be worked.
4, after video camera recorder work, in the rest-set flip-flop that band shows, pilot lamp is bright, and time controller has the corresponding time, otherwise should check relevant part.
5, onsite alarming welds by shown in Fig. 4.
Claims (5)
1. electric bridge control formula is shot with video-corder protector, it is characterized in that: by lockhole screening glass, electric bridge control formula is shot with video-corder control circuit, alarming starter, and power amplifier effect unit forms jointly;
Power amplifier effect unit is comprised of video camera recorder and onsite alarming;
Onsite alarming is the base stage that the output of voice sheet has connected preposition amplifier tube, the grounded emitter of preposition amplifier tube, collector is connected in the base stage of the PNP pipe that forms power amplifier, the base stage that forms the PNP pipe of power amplifier has also connect one end of power amplifier level pull-up resistor, the pull-up resistor other end connects to form the base stage of the NPN pipe of power amplifier, the PNP pipe that forms power amplifier manages with NPN the commissure electric capacity of central point series winding that emitter is connected, one end of another termination loudspeaker of commissure electric capacity, the other end ground wire of loudspeaker, the NPN pipe Integrated electrode that forms power amplifier is received electric bridge control formula and is shot with video-corder in control circuit on second triode of amplifying unit,
Electric bridge control formula shoot with video-corder control circuit by transformer unit, the preposition unit of bridge type, penetrate with isolated location, amplifying unit, the rest-set flip-flop that band shows, time controller, shooting manually boots switch and jointly forms;
With transformer unit, connected the preposition unit of bridge type, the preposition unit of bridge type has connected to be penetrated with isolated location, penetrates with isolated location and has connected amplifying unit, and amplifying unit has connected onsite alarming unit; With the wires lockhole screening glass sheet metal of ining succession, the other end of this metal wire has connected the preposition unit of bridge type after having connected a commissure electric capacity;
The connection of transformer unit is; The positive pole that connects respectively two diodes with the secondary two ends of transformation, secondary center is taken out and is closed ground connection, after the negative pole of two diodes links together, has connected two-way, and the first via has connected working power, the second tunnel has connected the positive pole of an electric capacity, the minus earth of this electric capacity;
The preposition unit of bridge type, is comprised of 4 diodes and 4 electric capacity; With two diode D1 and D2, be composed in series a new branch road, with another two diode D3 and D4, be composed in series another new road, with the positive pole of these two new branch roads, be connected to, negative pole links together, become a kind of bridge rectifier circuit, wherein use the tie point in two diode D1 and D2 series arm, as the outside output terminal in the preposition unit of bridge type, with the tie point in another two diode D3 and D4 series arm, connect ground wire;
With electric capacity C1 and C2, one end connect the positive terminal of bridge rectifier circuit, the other end of capacitor C 1 has connected one end of primary, the other end of capacitor C 2 has connected the other end of primary; The one end that has connected again two capacitor C 3 and C4 in one end of the negative pole of bridge rectifier element, capacitor C 3 other ends have connected one end of primary, and the other end of capacitor C 4 has connected the other end of primary;
Penetrate with isolated location, a triode and a resistance, consist of, by the base stage of the triode in this grade, connected the output terminal of the preposition unit of bridge type, the collector of this pipe connects power supply, and emitter-base bandgap grading has been connected after a resistance as output terminal at the corresponding levels;
Amplifying unit, by first NPN triode and second PNP triode, jointly formed, with first transistor base, connect and penetrate the output terminal with isolated location, grounded emitter, collector has been connected and has been connected the base stage of second triode after a resistance, the emitter of second triode connects power supply, and collector is as output terminal at the corresponding levels; This output terminal has connected in power amplifier effect unit;
The one end that has connected lockhole screening glass with a wires, the other end has been connected to have connected after an electric capacity and in the preposition unit of bridge type, has been connected two utmost point positive terminals;
Alarming starter is a lockhole switch, is arranged on lockhole top, lockhole screening glass below, and lockhole screening glass is oppressed the button of lockhole switch after being fixed on door, and lockhole switch contact is drawn with wire, has connected the onsite alarming in power amplifier effect unit.
2. electric bridge control formula according to claim 1 is shot with video-corder protector, it is characterized in that: 4 capacitance parameters that connect in the preposition unit of bridge type are consistent, and adopt high-tension electric capacity; Or by consistent two capacitances in series of use of amount of capacity together, form a new electric capacity, as method forms 4 new equivalent capacitys altogether, replace respectively 4 Single Capacitances in the preposition unit of bridge-type.
3. electric bridge control formula according to claim 1 is shot with video-corder protector, it is characterized in that: the installation site of lockhole screening glass is on anti-theft safety door lockhole, and lockhole is covered together with alarming starter.
4. electric bridge control formula according to claim 1 is shot with video-corder protector, it is characterized in that: the NPN pipe that forms power amplifier in onsite alarming is all the large power triode of selecting with PNP pipe.
5. electric bridge control formula according to claim 1 is shot with video-corder protector, it is characterized in that: the voice sheet in onsite alarming is alert sound sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391736.7U CN203480629U (en) | 2013-07-03 | 2013-07-03 | Shooting and recording security device of bridge control type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391736.7U CN203480629U (en) | 2013-07-03 | 2013-07-03 | Shooting and recording security device of bridge control type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203480629U true CN203480629U (en) | 2014-03-12 |
Family
ID=50228921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320391736.7U Expired - Fee Related CN203480629U (en) | 2013-07-03 | 2013-07-03 | Shooting and recording security device of bridge control type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203480629U (en) |
-
2013
- 2013-07-03 CN CN201320391736.7U patent/CN203480629U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204402181U (en) | A kind of electronic sentry possessing monitoring function | |
| CN203480629U (en) | Shooting and recording security device of bridge control type | |
| CN203444592U (en) | Dual-switch starting videoing guard door | |
| CN203480617U (en) | Shooting and recording device of bridge type | |
| CN203433603U (en) | Photographing protector | |
| CN203480615U (en) | Novel shooting and recording antitheft device | |
| CN203444586U (en) | Electronic monitoring telephone alarm device | |
| CN203311547U (en) | Bridge type early warning device | |
| CN203480616U (en) | Household bridge-type alarm | |
| CN203444588U (en) | Single-start mechanical-electrical combined monitor | |
| CN203480630U (en) | Bridge-type dual early-warning equipment | |
| CN203480632U (en) | Photographing device having telephone alarming function | |
| CN203961485U (en) | A kind of and door is supporting security personnel's monitor | |
| CN203480619U (en) | Integrated monitor | |
| CN203978025U (en) | Touch double startup monitor | |
| CN203444583U (en) | Household automatic photographing telephone alarm | |
| CN203444587U (en) | Touch type electronic anti-theft device | |
| CN203433604U (en) | Electrical bridge type guard door with telephone alarm | |
| CN203433602U (en) | Hybrid bridge control type guard device | |
| CN203433605U (en) | Electrical bridge type program control protector | |
| CN203433601U (en) | Bridge type household early warning apparatus | |
| CN204511062U (en) | The alarm of " awaiting orders " at any time | |
| CN204511220U (en) | A kind of monitor-type early warning type electronic anti-theft safety door | |
| CN204511063U (en) | The touch monitor of works fine performance can be ensured | |
| CN203480618U (en) | Anti-theft monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140703 |
|
| EXPY | Termination of patent right or utility model |