CN204238680U - A kind of induction type security alarm system alarm - Google Patents
A kind of induction type security alarm system alarm Download PDFInfo
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- CN204238680U CN204238680U CN201420719079.9U CN201420719079U CN204238680U CN 204238680 U CN204238680 U CN 204238680U CN 201420719079 U CN201420719079 U CN 201420719079U CN 204238680 U CN204238680 U CN 204238680U
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Abstract
A kind of induction type security alarm system alarm, belong to safety technique field, by two end protection power supply, lockhole cover plate, lockhole switch, signal shaping amplifier, warning circuit forms jointly, lockhole switch is covered by lockhole cover plate together with lockhole, the button of rear compressing lockhole switch fixed by lockhole cover plate, the touch signal produced when hand contact lockhole cover plate, amplify after shaping through signal shaping amplifier, start warning circuit and form early warning, if continue to crack lockhole, lockhole cover plate loosens, lockhole switch contact changes and produces warning enabling signal, form formal warning, share with the use of alternating current-direct current, the significant two end protection power supply of lightning protection capability, a kind of induction type security alarm system alarm is allowed all to keep good service behaviour at any time, the perfect further performance of antitheft series products.
Description
Technical field
Belong to safety technique field.
Background technology
Nowadays, no longer that only to protect lockhole be exactly real safe antitheft, even if lockhole is covered, also can open lockhole easily and cover sheet, crack lockhole password again, solve such problem, machinery is needed to be combined with electronics two aspect, such as increase the time that lockhole coverage sheet is lifted, be combined with electronics again, in this process that lockhole coverage sheet is lifted, produce and report to the police in advance, so just the state of affairs can be prevented at the beginning of carrying out, the state of affairs is prevented to be further development of more serious consequence, but report to the police in advance and how to produce, how machinery is combined with electronics could be more perfect, this is also the emphasis being worth research.
Power supply is the key ensureing electronic equipment performance, at present, power type outstanding on market is very abundant, voltage regulation performance is also fine, as three-terminal voltage-stabilizing class, can not be too high but this source of stable pressure but defeats by its input terminal voltage, usually about 30V is only had, so overvoltage capabilities is poor, and when there being thunderbolt to gush pressure, can at about 100V, therefore broken by lightning is subject to, if employing anti-thunder tube, the protection of anti-thunder tube when puncturing is shorted to earth, such result causes the load of prime excessive, thus negative effect is had, but higher transient state situation also non insurance is waited to thunderbolt, easily cause damage, so can't security device be directly used in, therefore, the research of power supply is also needed further.
In sum, antitheft series products also needs further innovating and developing, just can be adapted to society, also will continue the research of antitheft series products.
Summary of the invention
Main purpose of the present invention again proposes new technical measures, coordinate on the serial a series of advantage of maintenance 78, improve lightning protection capability, relax the ability to city's electro-mechanical wave, keep the power supply of works fine performance at any time, allow machinery with electronics perfect adaptation, while hand taking off lockhole cap, just producing pre-warning, crime being prevented before generation, as further committed a crime, more can produce formal warning, allow the performance of antitheft series products improve further.
The technical solution used in the present invention is:
1, a kind of induction type security alarm system alarm is made up of jointly two end protection power supply, lockhole cover plate, lockhole switch, signal shaping amplifier, warning circuit.
Wherein: two end protection power supply is made up of jointly rectification circuit, overvoltage fast tripping protection circuit, AC voltage-stabilizing circuit, direct current charge-discharge circuit, balance diode.
Wherein: rectification circuit is that two commutation diodes are connected into a branch road, another two commutation diodes are connected into another branch road, article two, the positive pole of branch road links together grounding wire, article two, the negative pole of branch road links together and becomes rectification and export, and in two branch roads, to meet two of transformer respectively secondary for the series connection point of commutation diode.
Overvoltage fast tripping protection circuit triggers branch road by first order overvoltage crowbar, second level overvoltage crowbar, input overvoltage protection triggering branch road and output overvoltage protection and forms.
First order overvoltage crowbar is made up of jointly first order overvoltage protection triode, voltage-limiting protection voltage-stabiliser tube, upper inclined resistance: the colelctor electrode of first order overvoltage protection triode connects rectification and exports; upper inclined resistance is connected between the base stage of rectification output and first order overvoltage protection triode; the positive pole of pressure limiting voltage stabilizing voltage stabilizing is connected to the base stage of first order overvoltage protection triode; minus earth, the emitter stage of first order overvoltage protection triode is the output of overvoltage fast tripping protection circuit.
Second level overvoltage crowbar is connected in the base stage of first order overvoltage protection triode with the colelctor electrode of second level overvoltage protection triode; the grounded emitter of second level overvoltage protection triode; the base stage of second level overvoltage protection triode connects one end of base protection resistor, and the other end of base protection resistor is connected to input overvoltage protection and triggers the output that branch road and output overvoltage protection trigger branch road.
It is protect Diode series to form by input that input overvoltage protection triggers branch road; the positive pole that input overvoltage protection triggers branch road is connected on the emitter stage of first order overvoltage protection triode in overvoltage fast tripping protection circuit, and input overvoltage protection is received in the base stage of second level overvoltage protection triode after triggering the negative pole of branch road and the output connection base protection resistor of input overvoltage protection triggering branch road.
Output overvoltage protection triggers a route output protection Diode series and forms; the positive pole of output overvoltage protection triggering branch road is connected to the output of AC voltage-stabilizing resistance, and the output of negative pole and output overvoltage protection triggering branch road that output over-voltage protection triggers branch road is connected with the output that input overvoltage protection triggers branch road.
AC voltage-stabilizing circuit is: the input of 78 serial integrated stable voltage circuits connects the output of overvoltage fast tripping protection circuit; arrive ground after inclined resistance under the earth terminal series voltage accurate adjustment of 78 serial integrated stable voltage circuits, the output of 78 serial integrated stable voltage circuits and the output of AC voltage-stabilizing circuit connect the earth terminal to 78 serial integrated stable voltage circuits after inclined resistance in voltage accurate adjustment.
Direct current charge-discharge circuit is by discharge diode, charging isolation branch road, battery, rectify control diode and base stage controlled resistor form: charge and isolate the route isolating diode that charge and be in series with the isolation resistance that charges, the positive pole of charging isolating diode connects the output of AC voltage-stabilizing circuit, negative pole connects the emitter stage of discharge diode after connecting charging isolation resistance, the emitter stage of discharge diode has also connect battery to ground, the positive pole of rectify control diode connects rectification and exports, negative pole connects the base stage of discharge diode, the base stage of discharge diode has also connect base stage controlled resistor to ground.
The positive pole of balance diode connects the output of AC voltage-stabilizing circuit, and the colelctor electrode of negative pole and discharge diode links together becomes alternating current-direct current mixed-voltage output.
Lockhole cover plate is one piece of sheet metal, has made toroidal, is arranged on above door lock hole, is covered by lockhole switch together with lockhole, and a lockhole cover plate wire is drawn, the base stage of preposition triode in connection signal shaping amplification circuit.
Signal shaping amplifier is made up of enlarge leadingly triode, phase inverter, control triode, driving relay.
The base stage of enlarge leadingly triode in the lead-out wire connection signal shaping amplification circuit of lockhole cover plate, the colelctor electrode of enlarge leadingly triode connects power supply, emitter stage connects the input of first order phase inverter, the output of first order phase inverter connects with the input of second level phase inverter, indirect first the sensitivity adjustment resistance of constrained input of first order phase inverter, second level phase inverter exports the base stage of connection control triode, indirect second the sensitivity adjustment resistance of constrained input of second level phase inverter, control the grounded emitter of triode, colelctor electrode connects the line bud lower end driving relay, termination power on line bud, the constant open contact of relay is driven to connect power supply, normal pin contact connects warning circuit as the output of signal shaping amplifier.
Lockhole switch is placed under lockhole cover plate; on lockhole; when under lockhole cover plate lid; oppress the button of lock-switch; the contact wire of lockhole switch is drawn; a contact lead-out wire of lockhole switch connects the alternating current-direct current mixed-voltage output of two end protection power supply, and another contact of lockhole switch connects the power supply as warning circuit after an isolating diode.
Warning circuit: lockhole switch lead-out wire and signal shaping amplifier export the positive pole connecing an isolating diode respectively, as the power supply of warning circuit after the negative pole of isolating diode links together, the output of voice sheet is connected to the base stage of amplifier tube, the grounded emitter of amplifier tube, colelctor electrode is connected in the base stage of PNP triode, the base stage of PNP triode has also connect one end of load resistance, the load resistance other end connects the base stage of NPN triode, the central point that PNP triode is connected with NPN transistor emitter is contacted a commissure electric capacity, one end of another termination loudspeaker of commissure electric capacity, the other end grounding wire of loudspeaker.
2, phase inverter is COMS phase inverter.
3, commutation diode is consistent with the function of charging isolating diode, and the diode power triggered in branch road than input overvoltage protection triggering branch road and output overvoltage protection is high.
4, the first overvoltage protection triode and the second overvoltage protection triode are all the triodes of breakdown reverse voltage >=100V.
For having a clear understanding of the meaning of the technical program, first will make the following instructions:
The existing achievement technology of inventor is that normal door no longer needs mechanical key, but open the door with electronics telecontrol engineering, thus lockhole can be covered, but also remain the mode of mechanical key enabling simultaneously, can also open the door with mechanical key if electronic telecontrol is opened the door when there is problem.If stranger wants to enter house by cracking lockhole, hand has just contacted lockhole cover plate will produce warning, and oneself because electronic telecontrol goes wrong by the situation that mechanical key opens the door, although warning also can be produced, because one of own side is on the scene, so can not feel alarmed.Also therefore identification circuit can differentiate that to open the door be that the normal door of owner or the preparation of perpetrator crack lockhole and enter room automatically.
For this reason, the existing meaning to each technical measures of the present invention, concrete condition is explained as follows further:
One, two end protection power supply is that alternating current-direct current is used in combination; after the advantage of the serial integrated stable voltage circuit of maintenance 78; improve lightning protection overvoltage capabilities; overvoltage fast tripping protection function is had in circuit; the input of 78 serial integrated stable voltage circuits and output are all protected; thus lightning protection capability promotes greatly; direct current component achieves the science floating charge to battery; voltage drop is not produced when battery discharging; when without alternating voltage; a kind of induction type security alarm system alarm also can normally work, as follows to further illustrating of two end protection power supply:
(1), contain first order overvoltage crowbar, second level overvoltage crowbar in overvoltage fast tripping protection circuit, input overvoltage protection triggers branch road and output overvoltage protection triggers branch road; a few part combination effect; excellent performance, improves lightning protection capability greatly.
First order overvoltage protection triode in first order overvoltage crowbar and the second level overvoltage protection triode in the overvoltage crowbar of the second level are all high back-pressure large power triodes, and breakdown reverse voltage, higher than 100V, is thus very helpful to lightning protection.Input overvoltage protection triggers branch road and output overvoltage protection triggers the form being all the use of Diode series in branch road, and diode is Common parts, not fragile, thus ensure that the Stability and dependability of circuit.
1, the input of AC voltage-stabilizing circuit is formed to the principle of protection:
The voltage regulation performance of 78 series is excellent, but its input can not more than 30V, otherwise it is fragile, and when there being thunderbolt overvoltage, voltage can more than 100V, the input of in this circuit 78 serial integrated stable voltage circuits (8 in Fig. 1) has been connected on the emitter stage of first order overvoltage protection triode (7 in Fig. 1), also add input overvoltage protection and trigger branch road (9 in Fig. 1), define such principle: if after exceeding the door of input triggering branch road (9 in Fig. 1) when being struck by lightning and causing rectification output end too high, second level overvoltage protection triode (5 in Fig. 1) conducting rapidly, immediately to the base stage short circuit of first order overvoltage protection triode (7 in Fig. 1), make the complete no-output of emitter stage of first order overvoltage protection triode, thus the input no-voltage of 78 series, define input lightning protection overvoltage fast tripping protection.
2, the output of AC voltage-stabilizing circuit is formed to the principle of protection:
If output has gush pressure output, and exceeded output overvoltage protection and to trigger after the door of branch road (12 in Fig. 1) after value, because output overvoltage protection trigger output that the output of branch road and input overvoltage protection trigger branch road with or the mode of door trigger second level overvoltage protection triode (5 in Fig. 1), therefore, when output have gush take output by force time, also second level overvoltage protection triode ON can be made, cause the base stage short circuit to first order overvoltage protection triode, make the complete no-output of emitter stage of first order overvoltage protection triode, thus the input no-voltage of 78 series, define output lightning protection overvoltage fast tripping protection.
The restorability of the first order overvoltage protection triode 3, in overvoltage fast tripping protection circuit and second level overvoltage protection triode is good; tracing property was pressed with to being struck by lightning; when after generation quick-break; first order overvoltage protection triode no-output; second level overvoltage protection triode becomes cut-off state because of triggerless voltage; namely open-circuit condition is reverted to voluntarily; if be again struck by lightning; again start and form protection; because second level overvoltage crowbar only just starts when thunderbolt or overvoltage; for under normal condition, without impact, thus the moment is all standby.
Voltage-limiting protection voltage-stabiliser tube (6 in Fig. 1) in first order overvoltage crowbar defines the voltage-limiting protection function to anti-lightning, improves further and the protection that improve AC voltage-stabilizing unit.
Its reason is, the base stage voltage-limiting protection voltage-stabiliser tube over the ground of first order protection triode, and therefore first order protection triode exports by clamper, and having carried out pressure limiting to shoving of thunderbolt generation, is the further Supplementary and perfect to fast tripping protection.
It should be noted that in overvoltage fast tripping protection circuit, carry out protection protect from different elements different place, such mode forms complementary and strengthening, thus largely can avoid the accident existed, thus improve anti-thunder ability.
(2), the explanation of AC voltage-stabilizing circuit:
Maintain the advantage of 78 series, to add in voltage accurate adjustment under inclined resistance and voltage accurate adjustment resistance partially, thus on reference voltage, again can realize output voltage and adjust flexibly, to realize the normal voltage needed for battery floating charge, as 6.6V; 13.8V etc.
(3), the explanation of direct current charge-discharge circuit:
1, battery (15 in Fig. 1) voltage is standard 12V voltage, but when alternating current-direct current mixing, battery standard float charge voltage is 13.6V, but voltage exports as 12V during battery discharging, both during charge and discharge, voltage is inconsistent, and direct current charge-discharge circuit of the present invention solves this problem well, because discharge diode (16 in Fig. 1) is PNP pipe, during its conducting and battery discharging time, the pressure drop of discharge diode is very little, can ignore, very large pressure drop can not be produced, battery discharging triode is made with it, valuable pressure drop can not be lost.
2, the principle forming discharge and recharge is: the base stage of discharge diode is connected to base stage controlled resistor (18 in Fig. 1) and a rectify control diode (17 in Fig. 1), this circuit just has such principle: have voltage when rectification exports, just show now have alternating current to exist, battery should be floating charge phenomenon, discharge diode is because be PNP pipe, its base stage has voltage to exist, and can not conducting, and colelctor electrode would not have voltage to export.When rectification output cathode no-voltage, discharge diode base stage no-voltage, it just constitutes the form of an electronic switch, forms conducting state, and battery starts electric discharge, colelctor electrode output voltage, reliably distinguishes two stages of floating charge and battery discharging.
(4), balance diode (19 in Fig. 1) to play an important role in this circuit arrangement, because the standard float charge voltage of battery is 13.8V, and operating voltage should be consistent with battery tension, just be unlikely to, because to have a power failure and storage battery forces down and makes equipment not work or cisco unity malfunction, therefore to increase the number of balance diode, float charge voltage 13.8V is reduced to about 12V, when having alternating current, equipment normally works, during battery, arrange and standby also normally to work.And diode is the 0.7V of constant substantially, fine debugging, its dynamic electric resistor is little, little to load effect, can not produce output voltage fluctuation, thus ensure that the correctness that alternating voltage exports, and when storage battery power supply, only through the discharge diode that pressure drop is little, without balance diode, so pressure drop can not be produced, therefore ensure that combined-voltage exports stable.
Two, the explanation of pre-warning:
The signal shaping amplifier be made up of enlarge leadingly triode (02 in Fig. 2), phase inverter, control triode (08 in Fig. 2), driving relay (09 in Fig. 2), the touch signal produced after hand being touched lockhole cover plate carries out shaping amplification, be converted into the available signal of telecommunication, and then startup warning circuit, form early warning, wherein phase inverter is made up of first order phase inverter (03 in Fig. 2) and second level phase inverter (06 in Fig. 2).
1, reliable trigger.Enlarge leadingly triode is large power triode, employing is penetrated with output form, there is very strong Feedback polarity, when the base stage of enlarge leadingly triode has faint signal, namely the touch signal produced after hand contact lockhole cover plate, the output signal of enlarge leadingly triode passes to phase inverter, the voltage that non-type touch signal is converted to standard by phase inverter exports, and then trigging control triode, start and drive relay, drive relay adhesive, drive relay adhesive contact change and start acoustics circuit, and then produce warning.
2, pre-warning is produced reliable in time.Phase inverter quiescent dissipation is extremely low, and during input signal change, can automatic fitration reconcile, so the voltage exported can be protected, antijamming capability is strong, promotes load-carrying ability, reduces time delay, so when there being triggering signal, pre-warning triggers reliable in time.The sensitivity of phase inverter adjusts very well, and a sensitivity adjustment resistance joined by each phase inverter, i.e. 05 in Fig. 2 and 07, and its sensitivity resistor resistance is large, sensitivity step-down, and resistance is little, and sensitivity raises, and has very strong adjustable.
3, the constant open contact of relay (09 in Fig. 2) is driven to connect power supply, normal pin contact, as output, drives the application of relay, enhances the reliability triggering late-class circuit (being warning circuit) here, small area analysis can be converted to big current by it, triggers late-class circuit more reliable and more stable.
4, further protection is: warn pre-the criminal failing to prevent; if think that further cracking lockhole enters room; just open lockhole cover plate; lockhole switch by the compressing of lockhole cover plate makes shift knob there occurs displacement because of loosening of lockhole cover plate; start warning system, thus send formal warning enabling signal.
Three, the lockhole switch be arranged under lockhole cover plate on lockhole is a key in the present invention, exactly because there has been lockhole switch, just made warning of the present invention accomplish more scientific, be also the place different from a lot of alarm, its reason is:
1, wrong report can not be produced.When house owner people stays out, the enabling now produced is not normal door, if now crack lockhole to open the door, must be crime behavior, warning be now very crucial, and when owner oneself is opened the door by lockhole with key, because oneself is on the scene, therefore can not make us terrified.
2, be very reliable, the normal life custom of people is affected not, in normal enabling is closed the door, lockhole switch can not action, thus lockhole switch can not damage, and open the door and close the door and also do not need artificial additional move, do not affect the normal habits and customs of people, thus do not affect the normal work that security system starts at every turn.
3, be that lockhole switch is reliably sensitive, just report to the police when crime behavior is not accomplished, thus loss is reduced to minimum.Because when lockhole cover plate loosens, lockhole switch contact will change and send warning enabling signal.
Four, the explanation of warning circuit: amplifier tube (302 in Fig. 4) is a triode, constitute complementary circuit by a PNP triode (304 in Fig. 4) and NPN triode (305 in Fig. 4) and power amplifier is carried out to audio frequency, when having pre-alarm signal or lockhole switch to have warning enabling signal, open the power supply of warning circuit, so there are voice to produce, what form due to this circuit is an OTL circuit, instead of OCL circuit, so debugging is simple, and have element not perishable, the advantage higher with efficiency, voice sheet (301 in Fig. 4) can record some language in advance, as " please not stopping at this " or " asking speed to be left " etc., and don't the dislike that has nothing to do can be made.
After the invention process, improve the security performance of anti-theft safety door, outstanding advantage is as follows:
One, improve security personnel's performance of anti-theft safety door all sidedly, stranger can kept outside of the door at ordinary times, when someone commits a crime, can give warning in advance, formally can produce warning again, finish the situation of the passive defence of anti-theft safety door in the past completely.
Two, warning function is reliably outstanding, and during input signal change, can automatic fitration reconcile, so the voltage exported can be protected, antijamming capability is strong, promotes load-carrying ability, reduces time delay, highly sensitive, reliable trigger.Attempt when there being people to destroy lockhole crime, just contact lockhole cover plate, early warning type system starts immediately, strengthens the psychological pressure of perpetrator.
Three, startup of reporting to the police is reliably sensitive, shows:
(1), warning system can not be reported by mistake.Because after coordinating with existing achievement, there is automatic recognition property.The enabling produced when owner is absent from the scene may be only crime behavior.Otherwise behavior of not committing a crime, lockhole switch can not send signal, and this is the intrinsic property due to lockhole switch, and the change of contact occurs inherently to occur when lockhole shift knob is being subject to compressing and is not suffering oppression.When without crime behavior, the button of lockhole switch is subject to the compressing of lockhole cover plate, thus lockhole switch contact can not change, and when there being crime behavior, lockhole cover plate souththern pine moves, the button of lockhole switch is no longer by the compressing of lockhole cover plate, and thus the contact of lockhole switch there occurs change, thus starts warning.
(2), easy to use, dependable performance, protection is tight, and lockhole switch does not affect normal habits and customs after installing completely, and when without event, lockhole switch is standby, the initiative alarming when event occurs.
Four, two end protection power supply is the power supply that alternating current-direct current shares, and lightning protection effect is remarkable, and a kind of induction type security alarm system alarm can be allowed to keep good service behaviour at any time, and it is in particular in: the advantage 1, maintaining 78 series, improves the protection of anti-thunder and overvoltage.Its reason one is the output of 78 serial integrated stable voltage circuits and input fast tripping protection when all carrying out overvoltage; Reason two is first order overvoltage protection triode in overvoltage fast tripping protection and second level overvoltage protection triode is all high back-pressure large power triode; first order overvoltage crowbar combines with second level overvoltage crowbar; substantially increase lightning protection capability; reason three has also possessed the ability of voltage-limiting protection in first order overvoltage crowbar; have when thunderbolt or overvoltage and carry out voltage-limiting protection again; avoid the destruction of thunderbolt to a great extent; therefore, in atrocious weather, equipment also can normally work.
2, easy to adjust, solve the problem of battery standard float charge voltage difficulty debugging, achieve alternating current-direct current and share.
3, adapt to wide, have wider adaptive capacity than traditional voltage-stabilized power supply, high at the voltage that meets accident, can not damage.And at voltage, lower ground side and period also can normally work.
4, easily produce.Reason one have employed complex function in circuit, and thus simple in circuits is compact; Two is because the debug point in circuit is few.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of two end protection power supply.
In figure: 1, transformer is secondary; 2, the rectification circuit of commutation diode composition; 3, upper inclined resistance; 4, base protection resistor; 5, second level overvoltage protection triode; 6, voltage-limiting protection voltage-stabiliser tube; 7, first order overvoltage protection triode; 8,78 serial integrated stable voltage circuits; 9, input overvoltage protection triggers branch road; 10, inclined resistance in voltage accurate adjustment; 11, inclined resistance under voltage accurate adjustment; 12, output overvoltage protection triggers branch road; 13, charge isolating diode; 14, charge isolation resistance; 15, battery; 16, discharge diode; 17, rectify control diode; 18, base stage controlled resistor; 19, diode is balanced; 20, alternating current-direct current mixed-voltage output.
Fig. 2 is signal shaping amplifier figure.
In figure: 01, lockhole cover plate lead-out wire; 02, enlarge leadingly triode; 03, first order phase inverter; 05, first sensitivity adjustment resistance; 06, second phase inverter; 07, second sensitivity adjustment resistance; 08, triode is controlled; 09, relay is driven; 010, signal shaping amplifier exports.
Fig. 3 is the scheme of installation of lockhole cover plate and lockhole switch.
In figure: 01, lockhole cover plate lead-out wire; 25, lockhole cover plate; 26, the screw of fixing lockhole cover plate and anti-theft safety door; 27, the printed panel of lockhole switch is welded; 28, lockhole switch; 29, a contact lead-out wire of lockhole switch; 30, another contact lead-out wire of lockhole switch; 31, the screw of fixing welding lockhole switch printed panel; 32, anti-theft safety door; 33, lockhole.
Fig. 4 is warning circuit figure.
In figure: 010, signal shaping amplifier exports; 30, another contact lead-out wire of lockhole switch; 289, lockhole switch normal pin contact lead-out wire connects the isolating diode of warning circuit; 299, signal shaping amplifier connects the isolating diode of warning circuit; 301, voice sheet; 302, amplifier tube; 303, load resistance; 304, PNP triode; 305, NPN triode; 306, commissure electric capacity; 308, loudspeaker.
Fig. 5 is each several part relation block diagram.
In figure: 01, lockhole cover plate lead-out wire; 25, lockhole cover plate; 28, lockhole switch; 29, lockhole switch normal pin contact lead-out wire; 30, lockhole switch constant open contact lead-out wire; 50, signal shaping amplifier; 51, warning circuit; 52, two end protection power supply.
Detailed description of the invention
Fig. 1 to Fig. 5 describes the concrete a kind of mode implemented jointly.
One, according to Fig. 3 embodiment, lockhole cover plate and lockhole switch are installed.
1, be processed into one block of hard material and strike out the dome larger than lockhole and make lockhole cover plate.
2, the periphery of lockhole cover plate spile as fixing screw hole (in order to increase take off lockhole cover plate time on, advise beating several screw hole more, go up several screws more), the place punching of installing lockhole cover plate at shop front lockhole is corresponding with it, the installing hole tapping of the shop front.
4, between lockhole cover plate and door, add hollow cushion ring, allow hollow place expose lockhole.
5, lockhole cover plate is fixed in the shop front.When should note fixing between lockhole cover plate and door when fixing, pad last layer insulant is as plastic washer.
6, connect lockhole cover plate with one end of a wire, the other end is connected to the base stage of enlarge leadingly triode in signal shaping amplifier.
7, be welded on a bar printing plate by lockhole switch, the printed panel having welded switch is fixed on door lock hole.
8, a contact lead-out wire of lockhole switch connects the alternating current-direct current mixed-voltage output of two end protection power supply, after another contact lead-out wire connects an isolating diode, connects the power end of warning circuit.
9, lockhole cover plate oppresses lockhole shift knob after fixing.
Two, installation and debugging signal shaping amplifier.
1, selectors: large power triode selected by triode, COMS phase inverter selected by phase inverter.
2, according to Fig. 2 welding, drive the constant open contact of relay to connect power supply, normal pin contact connects the power supply as warning circuit after an isolation.
3, debug.
Test and adjustment bridge type front end units: the emitter stage surveying enlarge leadingly triode with the voltage gear of universal meter, or the colelctor electrode of observing and controlling triode, when hand does not contact lockhole cover plate, the transmitting very low level of enlarge leadingly triode, and to control transistor collector be high-order, and when hand contacts lockhole cover plate, the transmitting of enlarge leadingly triode is very high-order, controlling transistor collector is low level, if not bery sensitive, should adjust sensitivity adjustment resistance.
Three, the enforcement of warning circuit: weld audio amplification circuit by shown in Fig. 4, is connected the power supply as warning circuit after an isolating diode respectively using signal shaping amplifier output and lockhole switch normal pin contact lead-out wire.
Four, two end protection power supply is implemented: 1, selected element: first order overvoltage protection triode and second level overvoltage protection triode are all the high-power NPN triodes of high back-pressure; discharge diode selects high-power PNP pipe, and the voltage stabilizing value of voltage-limiting protection voltage-stabiliser tube is greater than the input voltage of 78 serial integrated stable voltage circuits.
2, weld by the circuit diagram of Fig. 1.
3, AC voltage-stabilizing circuit voltage output value is adjusted.Resistance and inclined resistance under voltage accurate adjustment partially in the voltage accurate adjustment adjusting 78 serial integrated stable voltage circuits, make it the accurate requirement of voltage conforms battery floating charge, as 6.6 volts, 13.8 volts etc.Its rule is that under voltage accurate adjustment, inclined resistance is larger, and output voltage is higher, otherwise lower.
4, detect and debug overvoltage Protection parameters.
(1), detect and debug AC voltage-stabilizing circuit input overvoltage fast tripping protection parameter.
Break transformer primary side, and the output overvoltage protection that breaks triggers branch road, and the input overvoltage protection that breaks triggers branch road; Be connected on source of stable pressure input with oscillographic, click rectifier terminal with the DC voltages of 100 volts, oscilloscope display is that voltage declines rapidly, is even zero.After the high pressure of 100 volts remove, magnitude of voltage recovers normal.Otherwise the voltage-stabiliser tube parameter that should adjust in input triggering branch road.
(2), detect and debug AC voltage-stabilizing circuit pressure limiting parameter.
Break transformer primary side, and the output overvoltage protection that breaks triggers branch road; Be connected on source of stable pressure input with voltmeter, click rectifier terminal with the DC voltages of 100 volts, index shown in voltmeter is certain value.Otherwise voltage-limiting protection voltage-stabiliser tube should be adjusted.
(3), detect and debug voltage regulation unit output overvoltage fast tripping protection parameter.
Break transformer primary side, and the input overvoltage protection that breaks triggers branch road; Break voltage-limiting protection voltage-stabiliser tube; The constrained input end of the serial integrated circuit of short circuit 78, is connected on 78 serial integrated stable voltage circuit inputs with voltmeter, and click voltage regulation unit input with the DC voltage of certain voltage, now voltage shown in voltmeter will reduce rapidly.Otherwise output overvoltage protection should be adjusted to trigger voltage-stabiliser tube value in branch road.
5, adjust the performance of discharge diode, the first is when rectification has output, and measuring electricity transistor emitter and collector voltage should be opened a way.It two is when rectification no-output, and measuring electricity transistor emitter should be less than 0.1 with collector voltage, otherwise the resistance of the base resistance of change discharge diode.
Five, each several part relation as shown in Figure 5.
Claims (6)
1. an induction type security alarm system alarm, is characterized in that: be jointly made up of two end protection power supply, lockhole cover plate, lockhole switch, signal shaping amplifier, warning circuit;
Wherein: two end protection power supply is made up of jointly rectification circuit, overvoltage fast tripping protection circuit, AC voltage-stabilizing circuit, direct current charge-discharge circuit, balance diode;
Wherein: rectification circuit is that two commutation diodes are connected into a branch road, another two commutation diodes are connected into another branch road, article two, the positive pole of branch road links together grounding wire, article two, the negative pole of branch road links together and becomes rectification and export, and in two branch roads, to meet two of transformer respectively secondary for the series connection point of commutation diode;
Overvoltage fast tripping protection circuit triggers branch road by first order overvoltage crowbar, second level overvoltage crowbar, input overvoltage protection triggering branch road and output overvoltage protection and forms;
First order overvoltage crowbar is made up of jointly first order overvoltage protection triode, voltage-limiting protection voltage-stabiliser tube, upper inclined resistance: the colelctor electrode of first order overvoltage protection triode connects rectification and exports, upper inclined resistance is connected between the base stage of rectification output and first order overvoltage protection triode, the positive pole of pressure limiting voltage stabilizing voltage stabilizing is connected to the base stage of first order overvoltage protection triode, minus earth, the emitter stage of first order overvoltage protection triode is the output of overvoltage fast tripping protection circuit;
Second level overvoltage crowbar is connected in the base stage of first order overvoltage protection triode with the colelctor electrode of second level overvoltage protection triode, the grounded emitter of second level overvoltage protection triode, the base stage of second level overvoltage protection triode connects one end of base protection resistor, and the other end of base protection resistor is connected to input overvoltage protection and triggers the output that branch road and output overvoltage protection trigger branch road;
It is protect Diode series to form by input that input overvoltage protection triggers branch road, the positive pole that input overvoltage protection triggers branch road is connected on the emitter stage of first order overvoltage protection triode in overvoltage fast tripping protection circuit, and input overvoltage protection is received in the base stage of second level overvoltage protection triode after triggering the negative pole of branch road and the output connection base protection resistor of input overvoltage protection triggering branch road;
Output overvoltage protection triggers a route output protection Diode series and forms, the positive pole of output overvoltage protection triggering branch road is connected to the output of AC voltage-stabilizing resistance, and the output of negative pole and output overvoltage protection triggering branch road that output over-voltage protection triggers branch road is connected with the output that input overvoltage protection triggers branch road;
AC voltage-stabilizing circuit is: the input of 78 serial integrated stable voltage circuits connects the output of overvoltage fast tripping protection circuit, arrive ground after inclined resistance under the earth terminal series voltage accurate adjustment of 78 serial integrated stable voltage circuits, the output of 78 serial integrated stable voltage circuits and the output of AC voltage-stabilizing circuit connect the earth terminal to 78 serial integrated stable voltage circuits after inclined resistance in voltage accurate adjustment;
Direct current charge-discharge circuit is by discharge diode, charging isolation branch road, battery, rectify control diode and base stage controlled resistor form: charge and isolate the route isolating diode that charge and be in series with the isolation resistance that charges, the positive pole of charging isolating diode connects the output of AC voltage-stabilizing circuit, negative pole connects the emitter stage of discharge diode after connecting charging isolation resistance, the emitter stage of discharge diode has also connect battery to ground, the positive pole of rectify control diode connects rectification and exports, negative pole connects the base stage of discharge diode, the base stage of discharge diode has also connect base stage controlled resistor to ground,
The positive pole of balance diode connects the output of AC voltage-stabilizing circuit, and the colelctor electrode of negative pole and discharge diode links together becomes alternating current-direct current mixed-voltage output;
Lockhole cover plate is one piece of sheet metal, has made toroidal, is arranged on above door lock hole, is covered by lockhole switch together with lockhole, and a lockhole cover plate wire is drawn, the base stage of preposition triode in connection signal shaping amplification circuit;
Signal shaping amplifier is made up of enlarge leadingly triode, phase inverter, control triode, driving relay;
The base stage of enlarge leadingly triode in the lead-out wire connection signal shaping amplification circuit of lockhole cover plate, the colelctor electrode of enlarge leadingly triode connects power supply, emitter stage connects the input of first order phase inverter, the output of first order phase inverter connects with the input of second level phase inverter, indirect first the sensitivity adjustment resistance of constrained input of first order phase inverter, second level phase inverter exports the base stage of connection control triode, indirect second the sensitivity adjustment resistance of constrained input of second level phase inverter, control the grounded emitter of triode, colelctor electrode connects the line bud lower end driving relay, termination power on line bud, the constant open contact of relay is driven to connect power supply, normal pin contact connects warning circuit as the output of signal shaping amplifier,
Lockhole switch is placed under lockhole cover plate, on lockhole, when under lockhole cover plate lid, oppress the button of lock-switch, the contact wire of lockhole switch is drawn, a contact lead-out wire of lockhole switch connects the alternating current-direct current mixed-voltage output of two end protection power supply, and another contact of lockhole switch connects the power supply as warning circuit after an isolating diode;
Warning circuit: lockhole switch lead-out wire and signal shaping amplifier export the positive pole connecing an isolating diode respectively, as the power supply of warning circuit after the negative pole of isolating diode links together, the output of voice sheet is connected to the base stage of amplifier tube, the grounded emitter of amplifier tube, colelctor electrode is connected in the base stage of PNP triode, the base stage of PNP triode has also connect one end of load resistance, the load resistance other end connects the base stage of NPN triode, the central point that PNP triode is connected with NPN transistor emitter is contacted a commissure electric capacity, one end of another termination loudspeaker of commissure electric capacity, the other end grounding wire of loudspeaker.
2. a kind of induction type security alarm system alarm according to claim 1, is characterized in that: phase inverter is COMS phase inverter.
3. a kind of induction type security alarm system alarm according to claim 1, is characterized in that: commutation diode is consistent with the function of charging isolating diode, and the diode power triggered in branch road than input overvoltage protection triggering branch road and output overvoltage protection is high.
4. a kind of induction type security alarm system alarm according to claim 1, is characterized in that: the first overvoltage protection triode and the second overvoltage protection triode are all the triodes of breakdown reverse voltage >=100V.
5. a kind of induction type security alarm system alarm according to claim 1, is characterized in that: in bleeder circuit, upper one end of inclined resistance connects with the live wire of decoding block, the lower inclined resistance eutral grounding line of other end series connection.
6. a kind of induction type security alarm system alarm according to claim 1, is characterized in that: with this measure, 8 bit code lines of decoding block are all formed the form becoming code.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420719079.9U CN204238680U (en) | 2014-11-26 | 2014-11-26 | A kind of induction type security alarm system alarm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420719079.9U CN204238680U (en) | 2014-11-26 | 2014-11-26 | A kind of induction type security alarm system alarm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826163A (en) * | 2018-06-07 | 2018-11-16 | 佛山市毅丰电器实业有限公司 | A kind of motor control assembly of lamps and lanterns |
| CN109041360A (en) * | 2018-06-07 | 2018-12-18 | 佛山市毅丰电器实业有限公司 | A kind of upgrading control device of stage lamp |
-
2014
- 2014-11-26 CN CN201420719079.9U patent/CN204238680U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826163A (en) * | 2018-06-07 | 2018-11-16 | 佛山市毅丰电器实业有限公司 | A kind of motor control assembly of lamps and lanterns |
| CN109041360A (en) * | 2018-06-07 | 2018-12-18 | 佛山市毅丰电器实业有限公司 | A kind of upgrading control device of stage lamp |
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Granted publication date: 20150401 Termination date: 20161126 |