CN203475978U - Magnetic starting video-recording protector - Google Patents
Magnetic starting video-recording protector Download PDFInfo
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- CN203475978U CN203475978U CN201320385932.3U CN201320385932U CN203475978U CN 203475978 U CN203475978 U CN 203475978U CN 201320385932 U CN201320385932 U CN 201320385932U CN 203475978 U CN203475978 U CN 203475978U
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Abstract
The utility model provides a magnetic starting video-recording protector and belongs to the technical field of mechatronics. The magnetic starting video-recording protector is commonly composed of an anti-theft door, a lock hole covering piece, a video-recording control unit, an alarming starting unit, a sound system and a double-end protection power supply. When a case happens, the lock hole covering piece is contacted to generate a contact signal to start the video-recording control unit and the sound system to carry out video recording and warning; when the case is not stopped and the lock hole covering piece is loosened, a contact of a lock hole switch in the alarming starting unit is changed due to a magnet moved away, so as to generate an alarming starting signal; an electronic self-locking circuit in the alarming starting unit is used for accurately starting a video recording unit and the sound system; an automatic control line in the video-recording control unit applies two grades of amplification; the sensitivity and the reliability are very high; the double-end protection power supply with excellent voltage stabilization performance and good anti-thunder and overvoltage performances is matched so that the performance of anti-theft products is improved, and the foundation for developing anti-theft safety door products is provided.
Description
Technical field
Belong to electromechanical technical field.
Background technology
Family is the bay of life, and the security system of family is sound, is conducive to people and works contentedly, and is conducive to harmonious life, is a kind of basic demand of people.
Antitheft is important topic for a long time, allow antitheft series products further develop, need to dissolve in advanced electronic technology, the security personnel's equipment coordinating with alarm on market is also a lot, in base, camera monitoring device accounts for significant proportion, it can monitor people and the thing in this region at any time, and the right situation at that time of touching plays an important role.
General family just starts the record of making a video recording while mostly selecting event has occurred in order to reduce expenses, 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.
The startup of reporting to the police is critical element, if can not normally start or malfunction when impunity when a situation arises, consequence is all serious, and will solve, start correct and reliable problem, need electronics and mechanical combination, therefore to which type of electronic circuit coordinate by which type of frame for movement and just can reach the accurate and reliable of startup, also become a problem that is worth research.
The power supply that any good electronic product has all needed is supporting with it, and at present, the electric power output voltage of institute's adapted is not very high, and overvoltage capabilities is poor.From some technical data, the method that a lot of designers have proposed to be added in by triode integrated circuit input improves electric pressure, although such way can solve the ability that improves input voltage, but lightning protection effect not enough, if employing anti-thunder tube, the protection of anti-thunder tube when puncturing is to earth short, cause the load of prime excessive, thereby there is a negative effect, but thunderbolt is waited to also non insurance of higher transient state situation, easily cause damage, so can't be directly used in the important electrical equipment of a class such as security device, because this electric appliances has heavy function and mission, and power supply is perishable Focusing on components, so wish that it is very necessary stopping each dead angle that may exist.
Above-described difficult point, so cause the deficiency of antitheft series products, therefore also needs further to promote with perfect.
Summary of the invention
Main purpose of the present invention is to utilize prior art achievement; new measure is proposed; be combined with the outstanding power supply of over-current over-voltage protection; 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, magnetic startup is shot with video-corder protector by security door, and lockhole is covered sheet, shoots with video-corder control module, warning start unit, and sound system, several parts of two end protection power supply form jointly.
Wherein: it is a sheet metal that lockhole is covered sheet, be positioned on lockhole top, starting switch and lockhole are covered completely, by a wire bonds, at lockhole, cover on sheet, the wire other end is outwards drawn, and the front shooting of case being connected in shooting control module is recorded on automatic control circuit.
Warning start unit is comprised of lockhole switch and electronic self-locking circuit.
Lockhole switch, is arranged on lockhole on lockhole and covers the place under sheet, and magnet segment is fixed on lockhole and covers on sheet, when lockhole coverage sheet is positioned on door lock hole, the magnet distance corresponding with lockhole switch is the shortest, allows the contact of lockhole switch change, and lockhole switch contact is drawn with wire.
Electronic self-locking circuit is that lockhole switch contact lead-out wire has connected the base stage that forms the NPN pipe of self-locking after the series connection of a resistance, the grounded emitter line of NPN pipe, the base stage that has connected this NPN pipe with one end of a resistance, the other end grounding wire of this resistance, the colelctor electrode of this NPN pipe has been connected and has been connected the base stage that forms the PNP pipe of self-locking after another resistance, the emitter stage of PNP pipe has connected 12 volts of power supplys, with one end of another resistance, connected the emitter stage that forms the PNP pipe of self-locking, the other end of this resistance connects to form the base stage of the PNP pipe of self-locking, with a utmost point of an electric capacity, connected the colelctor electrode that forms the PNP pipe of self-locking, resistance of this electric capacity other end series connection and the base stage that has been connected the NPN pipe of composition self-locking after diode cathode, another utmost point of this electric capacity has also connected one end of another resistance, the other end ground connection of this resistance, the PNP pipe collector that forms self-locking has connected sound system and has shot with video-corder control module.
Shoot with video-corder control module by case before shooting record automatic control circuit, the rest-set flip-flop that band shows, time controller, shooting manually boots switch, video camera recorder forms.
Before case, making a video recording and recording automatic control circuit is the normal phase input end that signal leading arrives first order operational amplifier, the negative phase end of first order operational amplifier is connected a gain adjusting resistance with the output of first order amplifier, the output of first order amplifier is connected to the normal phase input end of second level amplifier, comparison bleeder circuit by two resistance series connection, two resistance series connection points connect the negative phase end of second level amplifier, bleeder circuit one end line of starting to exchange fire, other end grounding wire, the output of second level amplifier be that the output of early warning electronic circuit has connected video camera recorder.
Sound equipment caution system is the base stage that the output of voice sheet has connected preposition amplifier tube, the grounded emitter of preposition amplifier tube, colelctor electrode 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 load resistance, the load resistance 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 stage is connected, one end of another termination loudspeaker of commissure electric capacity, the other end grounding wire of loudspeaker, the NPN pipe collector that forms power amplifier is received on the electronic switch of shooting with video-corder in unit.
Two end protection power supply is by voltage-limiting protection unit, overvoltage fast tripping protection unit, and input overvoltage protection triggers branch road, and output overvoltage protection triggers branch road, and voltage regulation unit forms jointly.
It is to have connected voltage-limiting protection transistor collector that voltage-limiting protection unit has connected two-way ，Yi road with the output of rectification unit; Another road is one end of resistance in a voltage-limiting protection unit, and the other end of this resistance has connected the base stage of voltage-limiting protection triode; The emitter stage of voltage-limiting protection triode is the output of this unit, has been connected on the base stage of voltage-limiting protection triode, the minus earth of this voltage-stabiliser tube with the positive pole of a voltage-stabiliser tube.
Overvoltage fast tripping protection unit is comprised of overvoltage fast tripping protection triode and peripheral element: the base stage that connects voltage-limiting protection triode with the colelctor electrode of overvoltage quick-break triode; overvoltage fast tripping protection transistor emitter ground connection; overvoltage quick-break transistor base has connected one end of a base resistance by name, and the other end of base resistance has connected the output of input overvoltage protection triggering branch road and output overvoltage protection triggering branch road.
It is by a voltage-stabiliser tube and a branch road that diode is in series that input overvoltage protection triggers branch road; the positive terminal of this branch road voltage-stabiliser tube has been connected to the emitter stage of voltage-limiting protection triode; the other end is the output of this branch road, has connected the base resistance of overvoltage fast tripping protection triode.
It is by a voltage-stabiliser tube and a branch road that diode is in series that output overvoltage protection triggers branch road; the positive terminal of this branch road voltage-stabiliser tube has been connected to the output of voltage regulation unit; the other end is the output of this branch road, and this end has connected the base resistance of overvoltage fast tripping protection triode.
Voltage regulation unit is comprised of 78 serial integrated circuits and peripheral element: the emitter stage that has connected voltage-limiting protection triode with the input of 78 serial integrated circuits; the 78 serial integrated circuit earth terminals ground connection after a resistance of having contacted; output has connected one end of a resistance, and the other end of this resistance is connected to 78 serial integrated circuit earth terminals.
The output of 78 serial integrated circuits is last outputs, and the power supply input of each circuit part is all connected on herein.
2, the NPN pipe that forms power amplifier in sound system is all the large power triode of selecting with PNP pipe.
The two-stage amplification of 3, shooting with video-corder in control circuit is the integrated circuit 324 of use.
4, lockhole switch is dry-reed tube switch.
5, the NPN pipe that forms self-locking in electronic self-locking circuit is all large power triodes with PNP pipe.
For having a clear understanding of the meaning of the technical program, spy makes the following instructions:
One, before this, inventor is studied security door, and proposed normal door and opened the door without mechanical key, but the measure of the mode of opening the door with electronics telecontrol engineering or phone.Be when normal door, by remote control, to the power set that are installed in door, send instruction, 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, so security door can be made lockhole semiclosed processing, its meaning is, during normal use, lockhole is covered, and only during out of order special circumstances, just lockhole is covered to sheet and is opened.
Two, tool is understood the security personnel of ，Dui family, the most important thing is the security personnel of opposite house, and the security personnel of opposite house, emphasis is again the security personnel to lockhole, because great majority crime is all by cracking of lockhole entered house.For this reason, inventor has covered cover plate above lockhole, Men Bulu lockhole at ordinary times, on the contrary with the people that hand is taken off lid, be mostly suspectable people.The record so should make a video recording, and be the important front shooting of case record.
Three, based on above-mentioned situation, before the case of measure of the present invention, record three kinds of functions, one of function be that shooting starts immediately as long as hand touches lockhole top cover plate, if stop continuing, automatically stop taking.Two be when automatic camera records, to have recorded the time occurring at that time simultaneously, three be occurrence record after, will have the Presentation Function recording before case, announcements in people once there is overwriting situation, to watch.
Four, 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.
Five, produce the principle explanation of above function: (with Fig. 1, explain.）
Produce the principle of contact lockhole cap automatic camera record: when hand contact is locked into lockhole, cover sheet, after being top, hole cover plate, then the touch signal that has taken out human body is input in the in-phase end of operational amplifier of the first order and amplifies, being input to again afterwards comparison amplifier further amplifies, this have a very large gain, can fully guarantee sensitivity and the reliability of pre-alarm signal.Its reason is in this circuit, the resistance of first order operation amplifier level (103 in Fig. 1) can be adjusted the gain of this grade flexibly, adjusts the divider resistance ratio (109 in Fig. 1) of the comparison amplifier end of oppisite phase of second level operation amplifier level composition and can adjust flexibly the gain of this grade again.
Producing the principle of period shooting record: 116 in Fig. 1 is a kind of have time control and instruments (abbreviation time-controlling apparatus) that show, as long as preset the time, it will output signal, through or door (111 in Fig. 1) after, open electronic switch (112 in Fig. 1), then allow video camera work.
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, switch 119 is closed, so opened video camera logging.
Before generation case, after shooting record, there is displaying principle: in Fig. 1,115 is a kind of rest-set flip-flops with demonstration, thereby there is Memorability, when each or door has output to open electronic switch 112, all can trigger the rest-set flip-flop of memory, once so after rest-set flip-flop is triggered, additional LED can luminescence display.
The principle of shooting record writing time before generation case: when each or door has output to open electronic switch 112, have signal to trigger time controller, so can automatically record the moment of generation.
Six, produce warning function principle: when becoming flexible or opening completely after the cover plate of lockhole top, be satisfied with cover plate below, lockhole top lockhole switch because magnet away from and contact changes, start electronic self-locking circuit, electronic self-locking circuit has been opened video camera work after having amplified enabling signal, has opened warning system work simultaneously.
One of electronic self-locking circuit is also had to following explanation: (1), the form that pipe is amplified that adopts NPN and PNP to constitute jointly, there is following meaning,, amplification quantity is large; Two, PNP pipe become saturated after, the loss of voltage little (when being furnished with battery, peculiar meaning) of generation; Three, can easily transient signal be changed into a kind of long signal; Four, formed electronic switch volume urine is in miniaturization.
(2), in the electronic switching circuit that pipe is formed, anti-remaining resistance, be that the resistance connecing between PNP pipe emitter stage and base stage has played important function in circuit, its effect is when NPN pipe no signal, the thorough no-voltage of output of switch, output, without any remaining electricity, for the through engineering approaches that electronic switch uses, has been created essential condition.
(3), why between two pipes, add the positive feedback with Capacitance derivative, the one, meet this condition, the 2nd, can realize automatic recovery.
(4), why feedback capacity adopts electrodeless reason to be, electrodeless electric capacity leakage coefficient is little, under at feedback circuit, circuit is more stable.
Its benefit of the combination of lockhole switch and electronic self-locking circuit be sensitive, reliable, simultaneously can generation not make us terrified wrong report.Reason one is alarm switch while there is not event, and contact can not be subjected to displacement.The 2nd, do not affect the normal habits and customs of people, thereby do not affect the normal operation of the each starting of security system.
Seven, sound equipment principle 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.
Eight, two end protection type power supply has great importance in the present invention, and spy does through lower explanation its circuit:
When 1, having thunderbolt, be usually power supply perishable time, as common household electrical appliances, as TV, normally take the mode in power-off source and avoid, because these class household electrical appliances are made interim power down process, can not produce serious consequence.But as the specialities of security personnel's class, as resolute power down source will become security personnel's blank, so improve lightning protection effect, be first emphasis of the present invention.And that the present invention has the reason of good anti-lightning effect is as follows:
The first, voltage-limiting protection unit and overvoltage fast tripping protection unit, trigger branch road synergy with input and output overvoltage protection and jointly formed " overvoltage fast tripping protection function ", and excellent performance, has very strong lightning protection overvoltage capabilities.
(1), form the principle of voltage regulation unit input overvoltage protection:
If thunderbolt and while causing rectification output end too high and surpass after the door of a plurality of diodes (918 in Fig. 5) that replace voltage-stabiliser tube in the triggering branch road of voltage regulation unit input; overvoltage fast tripping protection triode (in Fig. 5 903) conducting rapidly; base stage short circuit to voltage-limiting protection triode (in Fig. 5 906) immediately; make this manage complete no-output; three end integrated circuit input no-voltages, form lightning protection overvoltage " quick-break " protection.
(2), form the principle of voltage regulation unit output overvoltage protection: if output has to gush, press output; and surpassed after the value that output triggers a plurality of diodes that replace voltage-stabiliser tube door in branch road (in Fig. 5 916); equally with or a door mode trigger overvoltage fast tripping protection triode (in Fig. 5 903) conducting; cause the base stage short circuit of voltage-limiting protection triode (in Fig. 5 906); make this manage complete no-output; three end integrated circuit input no-voltages, form lightning protection overvoltage fast tripping protection.
(3), the automatic restorability of overvoltage fast tripping protection triode is good, the situation that can follow the tracks of rapidly " thunderbolt overvoltage ".Reason is to produce after fast tripping protection, voltage-limiting protection triode (in Fig. 5 906) no-output, overvoltage fast tripping protection triode (in Fig. 5 903) because of triggerless voltage will be by amplifying or saturation state changes cut-off state into.Revert to voluntarily open-circuit condition, if be again struck by lightning, again start, form protection, until output voltage is normal value.
(4), " fast tripping protection unit " relevant elements, only have thunderbolt or just work during overvoltage, thus be not easy to damage, constantly all in a kind of guard mode.
Its reason is power output end while being normal condition, overvoltage fast tripping protection triode with trigger branch road all in off state, there is no " electrical wear ", can not damage.
The second, voltage-limiting protection unit has formed the secondary voltage-limiting protection function of anti-lightning protection to thunderbolt, further improves and has improved the protection to voltage regulation unit.
Its reason is, the base stage of voltage-limiting protection triode (in Fig. 5 906) has Zener diode over the ground, so this pipe output is by clamper, and pressure limiting has been carried out in shoving that this diode pair thunderbolt produces, and is the further Supplementary and perfect to " fast tripping protection ".
It should be noted that the present invention's designed quick-break and the protection of two kinds of character of pressure limiting, and the input of voltage regulation unit and the duplicate protection of output, main cause one is that thunderbolt is the energy that a kind of destructiveness is very strong, particularly occurs in the place close to very from equipment.Design must leave sufficient surplus.The 2nd, protection of different nature is protected from different key points, can form complementary and strengthening, thereby can largely avoid the accident of existence, thereby has improved anti-thunder ability.
2, the reason one that can not damage circuit in the higher place of civil power and period is that civil power can not gush pressure higher than thunderbolt when high, the 2nd, and voltage-limiting protection triode (in Fig. 5 906) is that high inverse-voltage tube has very strong back-pressure value.
3, can be in the main cause of the lower place of civil power and period work: because voltage-limiting protection triode (in Fig. 5 906) is high inverse-voltage tube; so can bridge-type output voltage can be designed higherly when design; when civil power is low; at this moment bridge-type voltage can not be very low, just can do certain compensation.
4, can adjust the reason of different output voltage stabilizing values.Owing to having increased peripheral element adjustable resistance (in Fig. 5 910 meanwhile 911) in measure, thereby can on reference voltage, again realize output voltage and adjust flexibly, to realize the normal voltage required to battery floating charge, as 6.6 volts, 12.8 volts etc.
After the invention process, anti-theft security goalkeeper presents a kind of brand-new looks, has following outstanding advantage:
1, the line power of sound system is large, simple, and debugging is convenient, power saving.
2, after the invention process, anti-theft safety door and alarm have been realized the combination of science, three kinds of functions integrate, one of be to there is the function that people is kept outside the door, two are the functions with automatic camera record, three are the functions of reporting to the police, three kinds of functions are all very important, promote all sidedly security personnel's performance of anti-theft safety door, enriched the kind of security door.
3, 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.
4, warning function is reliable and sensitive, does not importantly produce wrong report.
5, reliable, easy to use.Reason one be video camera recorder and warning system at ordinary times most cases in no power state, do not produce electrical wear, at any time all in a kind of " highly waiting " state, the 2nd, user between the whole operating period, closing the door when opening without any need for other additional move, do not affect normal habits and customs, can not produce malfunctioning situation.
6, shooting with video-corder control circuit has very high sensitivity and reliability, after debugging, is all applicable to all-environment needs, and circuit is simple, and debugging is convenient.
7, produce easily, the one, the simple and reliable debugging of circuit is easy, and the 2nd, do not need the instrument and meter of price top grade.
8, the two end protection type power supply of institute's adapted has following advantage: (1), anti-thunder and overvoltage protection effect are fine.Main cause one is that two protection key points in source of stable pressure have realized strong protection, and the first key point is that the input of voltage regulation unit has been realized to protection, and the second key point is that the output of voltage regulation unit has been realized to protection.The 2nd, be the duplicate protection with " quick-break " and two kinds of character of pressure limiting of the present invention, thereby performance is remarkable.Thereby largely avoided the destruction of thunderbolt.At thunderstorm season, needn't make power down process, institute's adapted equipment can if be used on security personnel's equipment, not guarantee that " security personnel " do not produce blank because thundery sky quits work, and with being difficult to reach this effect three traditional end integrated circuits and combining of triode.
(2), this line thunder protection effect is more much better than conventional anti-thunder tube.The lightning protection function that its reason one is anti-thunder tube is this tubular short circuit in couples, and the present invention is and rear class generation quick-break rather than shorted to earth, thus to prime without negative role.The 2nd, the model of the anti-thunder tube that " suctioning through voltage " is low is difficult for having bought; and overvoltage fast tripping protection triode of the present invention (903 in Fig. 5) is extremely wide with the model scope of voltage-limiting protection triode (906 in Fig. 5); be easy to required " suctioning through " magnitude of voltage of supporting one-tenth, be easy to supporting becoming and suction through the protection of voltage below 30 volts.
(3), adapt to widely, than traditional voltage-stabilized power supply, have wider adaptive capacity, high at the voltage that meets accident, can not damage.And also can work in the lower place of voltage and period.
(4), there is the voltage stabilizing value of decimal in available adjustment output generation, be convenient to the floating charge of battery science.There is overcurrent protection simultaneously.Be fruitful or other electronic products have excellent performance after supporting.
(5), voltage regulation performance is excellent, because it has all advantages of three end integrated regulated power supplies.
(6), easily produce.Reason one is in circuit, to have adopted complex function, thereby simple in circuits is compact; The 2nd, because the debug point in circuit is few.The 3rd,, debug point very easily quantizes, and debugging scope is loose.
9, the utilization of electronic self-locking circuit, relaxes the requirement to switch, reduces the installation difficulty of switch, improves sensitivity and the reliability of reporting to the police and starting.
Accompanying drawing explanation
Fig. 1 is that before case, automatic control circuit figure is recorded in shooting.
In figure: 3, lockhole is covered sheet lead-out wire; 102, first order amplifier positive terminal; 103, first order amplifier gain adjusting resistance; 104, first order amplifier negative phase end; 105, first order operational amplifier; 106, second level amplifier; 107, second level amplifier negative phase end; 108, second level amplifier positive terminal; 109, second level comparison amplifier divider resistance; 111, before case, startup or the door in automatic control circuit recorded in shooting; 112, electronic switch; 113, video camera recorder; 115,, there is the rest-set flip-flop of demonstration in generation; 116, time controller; 119, lockhole switch; 120, manual control switch.
Fig. 2 is sound system circuit figure.
In figure: 75, electronic self-locking circuit output connecting sound equipment system; 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); 112, electronic switch; 308, loudspeaker.
Fig. 3 is that lockhole switch and lockhole are covered sheet scheme of installation.
In figure: 1, lockhole is covered sheet; 2, magnet segment; 3, lockhole is covered sheet lead-out wire; 4, the printed panel of welding lockhole switch; 119, lockhole switch; 7, lockhole switch lead-out wire; 11, anti-theft safety door.
Fig. 4 is electronic self-locking circuit figure.
In figure: 7, lockhole switch lead-out wire; 52, input resistance; 53, NPN amplifying triode; 54, the commissure resistance between two amplifier tubes; 55, anti-remaining resistance; 56, PNP tri-utmost point amplifier tubes; 57, isolating diode; 58, discharge resistance; 59, feedback capacity; 60, discharge resistance; 61, feedback resistance; 62 feedback diodes; 63, steady resistance; 71, another electrochemical capacitor that forms electrodeless electric capacity; 75 electronic self-locking circuit output connecting sound equipment systems; 111, before case, startup or the door in automatic control circuit recorded in shooting.
Fig. 5 two end protection power circuit diagram.
In figure: 900, rectification output; 902, inclined to one side resistance on voltage-limiting protection triode; 903, overvoltage fast tripping protection triode; 904: overvoltage fast tripping protection transistor base resistance; 905, voltage-limiting protection Zener diode; 906, voltage-limiting protection triode; 908, input triggers or gate diode; 909,78 serial integrated circuits; 910, inclined to one side resistance in output voltage accurate adjustment; 911, inclined to one side resistance under output voltage accurate adjustment; 912, voltage-stabilized power supply output: 914, voltage regulation unit output trigger in branch road or gate diode; 916, output triggers in branch road and replaces a plurality of diodes in voltage-stabiliser tube; 918, input triggers in branch road and replaces a plurality of diodes in voltage-stabiliser tube.
Fig. 6 is shooting record and the correlation figure partly that reports to the police.
In figure: 1, lockhole is covered sheet; 119, lockhole switch; 203, electronic self-locking circuit; 120, manual control switch; 201, shooting tracer signal amplifying circuit before case; 111, before case, startup or the door in automatic control circuit recorded in shooting; 112, electronic switch; 113, video camera recorder; 202, sound system; 255, two end protection power supply.
The specific embodiment
Fig. 1 and Fig. 6 have described the specific embodiment of the present invention.
One, warning start unit and lockhole are covered the enforcement of sheet.
1, with a metal or plastic material, be processed into than lockhole great garden lid and become lockhole coverage sheet of the present invention.
2, lockhole is covered sheet lead-out wire and has been connected and shoot with video-corder control circuit.
3, at the periphery of lockhole coverage sheet, make a call to three apertures, the place punching that lockhole coverage sheet is installed at shop front lockhole is corresponding with it, the installing hole employing tapping of the shop front.
4, dry-reed tube switch is welded on a bar printing plate and allows switch and printed panel become one, being arranged on lockhole covers between sheet and door lock hole, magnet segment is fixed on lockhole and covers on sheet, and when three fixing screw precessions being fixed on, magnet is corresponding with lockhole switch.
5, the lead-out wire of lockhole switch has connected the input of electronic self-locking circuit.
6, electronic self-locking circuit welds as shown in Figure 4, the output of electronic self-locking circuit connected respectively shoot with video-corder unit automatic control circuit or door start and sound system.
Two, according to shooting before Fig. 1 enforcement case, record automatic control circuit.
1, press Fig. 1 welding, in figure, active adopts integrated circuit 324.
2, be soldered rear to the inspection of function and debugging:
During A, hand contact lockhole top cover plate, video camera recorder work, hand leaves and automatically stops afterwards, otherwise should adjust the gain resistor (109 in Fig. 1) in amplifier.
The time control section of B, the time-controlling apparatus of adjusting, the time period that simulation is adjusted, video camera recorder should be worked.Otherwise should check and start or door.
C, manually opened manual control switch 120, video camera recorder should be worked.
D, after video camera recorder work, in the rest-set flip-flop that band shows, indicator lamp is bright, and time controller has the corresponding time, otherwise should check relevant part.
Three, weld as shown in Figure 2 acoustics circuit, adjust audio frequency adjusting resistance and audio frequency and adjust electric capacity, the sound that allows loudspeaker send is undistorted.
Claims (5)
1. magnetic startup is shot with video-corder protector by security door, and lockhole is covered sheet, shoots with video-corder control module, warning start unit, and sound system, several parts of two end protection power supply form jointly;
Wherein: it is a sheet metal that lockhole is covered sheet, be positioned on lockhole top, starting switch and lockhole are covered completely, by a wire bonds, at lockhole, cover on sheet, the wire other end is outwards drawn, and the front shooting of case being connected in shooting control module is recorded on automatic control circuit;
Warning start unit is comprised of lockhole switch and electronic self-locking circuit;
Lockhole switch, is arranged on lockhole on lockhole and covers the place under sheet, and magnet segment is fixed on lockhole and covers on sheet, when lockhole coverage sheet is positioned on door lock hole, the magnet distance corresponding with lockhole switch is the shortest, allows the contact of lockhole switch change, and lockhole switch contact is drawn with wire;
Electronic self-locking circuit is that lockhole switch contact lead-out wire has connected the base stage that forms the NPN pipe of self-locking after the series connection of a resistance, the grounded emitter line of NPN pipe, the base stage that has connected this NPN pipe with one end of a resistance, the other end grounding wire of this resistance, the colelctor electrode of this NPN pipe has been connected and has been connected the base stage that forms the PNP pipe of self-locking after another resistance, the emitter stage of PNP pipe has connected 12 volts of power supplys, with one end of another resistance, connected the emitter stage that forms the PNP pipe of self-locking, the other end of this resistance connects to form the base stage of the PNP pipe of self-locking, with a utmost point of an electric capacity, connected the colelctor electrode that forms the PNP pipe of self-locking, resistance of this electric capacity other end series connection and the base stage that has been connected the NPN pipe of composition self-locking after diode cathode, another utmost point of this electric capacity has also connected one end of another resistance, the other end ground connection of this resistance, the PNP pipe collector that forms self-locking has connected sound system and has shot with video-corder control module,
Shoot with video-corder control module by case before shooting record automatic control circuit, the rest-set flip-flop that band shows, time controller, shooting manually boots switch, video camera recorder forms;
Before case, making a video recording and recording automatic control circuit is the normal phase input end that signal leading arrives first order operational amplifier, the negative phase end of first order operational amplifier is connected a gain adjusting resistance with the output of first order amplifier, the output of first order amplifier is connected to the normal phase input end of second level amplifier, comparison bleeder circuit by two resistance series connection, two resistance series connection points connect the negative phase end of second level amplifier, bleeder circuit one end line of starting to exchange fire, other end grounding wire, the output of second level amplifier be that the output of early warning electronic circuit has connected video camera recorder;
Sound equipment caution system is the base stage that the output of voice sheet has connected preposition amplifier tube, the grounded emitter of preposition amplifier tube, colelctor electrode 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 load resistance, the load resistance 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 stage is connected, one end of another termination loudspeaker of commissure electric capacity, the other end grounding wire of loudspeaker, the NPN pipe collector that forms power amplifier is received on the electronic switch of shooting with video-corder in unit,
Two end protection power supply is by voltage-limiting protection unit, overvoltage fast tripping protection unit, and input overvoltage protection triggers branch road, and output overvoltage protection triggers branch road, and voltage regulation unit forms jointly;
It is to have connected voltage-limiting protection transistor collector that voltage-limiting protection unit has connected two-way ，Yi road with the output of rectification unit; Another road is one end of resistance in a voltage-limiting protection unit, and the other end of this resistance has connected the base stage of voltage-limiting protection triode; The emitter stage of voltage-limiting protection triode is the output of this unit, has been connected on the base stage of voltage-limiting protection triode, the minus earth of this voltage-stabiliser tube with the positive pole of a voltage-stabiliser tube;
Overvoltage fast tripping protection unit is comprised of overvoltage fast tripping protection triode and peripheral element: the base stage that connects voltage-limiting protection triode with the colelctor electrode of overvoltage quick-break triode, overvoltage fast tripping protection transistor emitter ground connection, overvoltage quick-break transistor base has connected one end of a base resistance by name, and the other end of base resistance has connected the output of input overvoltage protection triggering branch road and output overvoltage protection triggering branch road;
It is by a voltage-stabiliser tube and a branch road that diode is in series that input overvoltage protection triggers branch road, the positive terminal of this branch road voltage-stabiliser tube has been connected to the emitter stage of voltage-limiting protection triode, the other end is the output of this branch road, has connected the base resistance of overvoltage fast tripping protection triode;
It is by a voltage-stabiliser tube and a branch road that diode is in series that output overvoltage protection triggers branch road, the positive terminal of this branch road voltage-stabiliser tube has been connected to the output of voltage regulation unit, the other end is the output of this branch road, and this end has connected the base resistance of overvoltage fast tripping protection triode;
Voltage regulation unit is comprised of 78 serial integrated circuits and peripheral element: the emitter stage that has connected voltage-limiting protection triode with the input of 78 serial integrated circuits, the 78 serial integrated circuit earth terminals ground connection after a resistance of having contacted, output has connected one end of a resistance, and the other end of this resistance is connected to 78 serial integrated circuit earth terminals;
The output of 78 serial integrated circuits is last outputs, and the power supply input of each circuit part is all connected on herein.
2. protector is shot with video-corder in magnetic startup according to claim 1, it is characterized in that: the NPN pipe that forms power amplifier in sound system is all the large power triode of selecting with PNP pipe.
3. protector is shot with video-corder in magnetic startup according to claim 1, it is characterized in that: the two-stage amplification of shooting with video-corder in control circuit is the integrated circuit 324 of use.
4. protector is shot with video-corder in magnetic startup according to claim 1, it is characterized in that: lockhole switch is dry-reed tube switch.
5. protector is shot with video-corder in magnetic startup according to claim 1, it is characterized in that: the NPN pipe that forms self-locking in electronic self-locking circuit is all large power triodes with PNP pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320385932.3U CN203475978U (en) | 2013-07-01 | 2013-07-01 | Magnetic starting video-recording protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320385932.3U CN203475978U (en) | 2013-07-01 | 2013-07-01 | Magnetic starting video-recording protector |
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| Publication Number | Publication Date |
|---|---|
| CN203475978U true CN203475978U (en) | 2014-03-12 |
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| CN201320385932.3U Expired - Fee Related CN203475978U (en) | 2013-07-01 | 2013-07-01 | Magnetic starting video-recording protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937336A (en) * | 2016-06-20 | 2016-09-14 | 刘纯洪 | Electric contact lock |
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2013
- 2013-07-01 CN CN201320385932.3U patent/CN203475978U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937336A (en) * | 2016-06-20 | 2016-09-14 | 刘纯洪 | Electric contact lock |
| CN105937336B (en) * | 2016-06-20 | 2018-06-01 | 刘纯洪 | Electric contact is locked |
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