CN206035123U - Electromagnetic lock drive circuit and electromagnetic lock - Google Patents
Electromagnetic lock drive circuit and electromagnetic lock Download PDFInfo
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- CN206035123U CN206035123U CN201620896719.2U CN201620896719U CN206035123U CN 206035123 U CN206035123 U CN 206035123U CN 201620896719 U CN201620896719 U CN 201620896719U CN 206035123 U CN206035123 U CN 206035123U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 12
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Abstract
The embodiment of the utility model provides an electromagnetic lock drive circuit, including first power input end, second power input end and current control component, this circuit includes two operating condition, under two operating condition, first power input end and second power input end connect the first end and the second end of excitation coil of electromagnetic lock respectively in turn for the current direction of input excitation coil is opposite, current control component series connection is in the return circuit that first operating condition or second operating condition formed, is used for changing the electric current that flows through the return circuit, thereby make the electric current that flows into excitation coil different under first operating condition and second operating condition, make the magnetic field that excitation coil produced also different, satisfy the demand that electromagnetic lock blocked and unblanked respectively, thereby realized through single power control electromagnetic lock, reduced power quantity, the complex voltage reduction part of the conventional circuit is omitted, the peripheral circuit is greatly simplified, and the reliability of the system is improved.
Description
Technical field
The utility model is related to electric equipment field, and in particular to a kind of electromagnetic lock drive circuit and electromagnetic lock.
Background technology
At present, some electric equipments using when need to open the door and close the door, traditional door is usually manually operated door, and manually control is opened
Door is closed the door, and in order to switch gate is more convenient, also has some equipment to be switched using electrically operated gate.For example, the dish-washing machine overwhelming majority is adopted
It is manually operated door, also has a few high-end brand to use electrically operated gate, the driving main body mechanism of electrically operated gate is mainly synchronous electricity
Machine and great-power electromagnetic lock, as shown in figure 1, the structure chart of great-power electromagnetic lock is given, including iron prop 1, spring 2, permanent magnet
3rd, the lead 5 of magnet exciting coil 4 and magnet exciting coil, wherein iron prop 1 is the moving component of electromagnetic lock, is electromagnetic lock by adhesive and is released
The main body put, spring 2 for electromagnetic lock unlocking when release screen resilience is provided, permanent magnet 3 provides powerful magnetic for electromagnetic lock adhesive holding
Power；When magnet exciting coil 4 leads to positive current, produce and the equidirectional magnetic field of permanent magnet, produce when leading to reversing the current contrary with permanent magnet
The magnetic field in direction；Magnet exciting coil lead 5 is connected with peripheral drive circuit HVDC end.During general whole electromagnetic lock forward direction adhesive
Between be that, less than 0.2s, reverse release time is less than 0.1s, conduction time is spaced minimum 4S.
At closing time, synchronous motor coordinates reduction gear by door slow steady pull-up, when door is connect with a distance from inner bag frame
During nearly 5cm or so, great-power electromagnetic lock starts and quick tense door shuts, and now powerful electromagnetic lock is needed in adhesive
Relatively high power；However, less power is needed when electrically operated gate discharges, power is excessive may to cause the contrary with permanent magnet of generation
The magnetic field in direction is excessive, and iron prop 1 causes electromagnetic lock discharge and cause door open still by adhesive.Due to adhesive and release
Putting needs the voltage or electric current that provide positive and negative both direction, while both forward and reverse directions voltage or size of current can not be identical, therefore often
Rule way is that, using two different electrical powers come the driving source for providing adhesive and discharge, circuit structure is complicated, and high cost is unfavorable for certainly
The popularization of dynamic door.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome electromagnetic lock of the prior art to need two drivings
Power supply causes circuit structure complexity, the defect of high cost.
It is for this purpose, the utility model embodiment provides a kind of electromagnetic lock drive circuit including the first power input, second electric
Source input and current controling element, the electromagnetic lock drive circuit in the first working condition, first power input
It is connected with the second end of the magnet exciting coil of electromagnetic lock, the second source input is connected with the first end of the magnet exciting coil of electromagnetic lock
Connect；The electromagnetic lock drive circuit in the second working condition, the magnet exciting coil of first power input and electromagnetic lock
First end connects, and the second source input is connected with the second end of the magnet exciting coil of electromagnetic lock, the current controling element
Be connected in series in the loop formed by first working condition or second working condition, described returning is flow through for changing
The electric current on road.
Preferably, in the loop formed by second working condition, it is electric that the current controling element is arranged on first
Between the first end of the magnet exciting coil of source input and electromagnetic lock, or the current controling element is arranged on second source input
And the second end of the magnet exciting coil of electromagnetic lock between；
Or
In the loop formed by first working condition, the current controling element is arranged on the first power input
And the second end of the magnet exciting coil of electromagnetic lock between, or the current controling element is arranged on second source input and electromagnetic lock
Magnet exciting coil first end between.
Preferably, the current controling element is included inductively or capacitively.
Preferably, element of releasing has been arranged in parallel at the two ends of the current controling element.
Preferably, the electromagnetic lock drive circuit by DPDT gate-controlled switch in first working condition and described
Switch between second working condition, the first stationary contact of the DPDT gate-controlled switch connects the first of the magnet exciting coil
End, the second stationary contact connect the second end of the magnet exciting coil；It is defeated that first movable contact and the 4th movable contact are all connected with second source
Enter end；Second movable contact and the 3rd movable contact are all connected with the first power input；
Under first working condition, first stationary contact connects the first movable contact, and the second stationary contact connects the 3rd movable contact,
Under second working condition, first stationary contact connects the second movable contact, and second stationary contact connects the 4th movable contact.
Preferably, in the loop formed by the second working condition, it is dynamic tactile that the current controling element is arranged on the described 4th
Between point and second source input；Or the current controling element is arranged on second movable contact and the first power input
Between end.
Preferably, the DPDT gate-controlled switch is dpdt relay, its input second power electronics of connection
The output end of switch, the input connection secondary signal output end of the electronic power switch.
Preferably, first power input and second source input connection dc source or connection are by alternating current
The dc source exported after the rectified circuit rectifies in source.
Preferably, the first gate-controlled switch is provided between the AC power and the rectification circuit.
Preferably, first gate-controlled switch is relay, the output end of its input the first electronic power switch of connection,
The input of the electronic power switch connects the first signal output part.
Additionally, the utility model embodiment also provides a kind of electromagnetic lock driven using above-mentioned electromagnetic lock drive circuit.
The technical scheme that the utility model embodiment is provided, has the advantage that：
1. the electromagnetic lock drive circuit of the utility model embodiment offer, including the first power input and second source are defeated
Enter end and current controling element, the circuit includes two working conditions, under two working conditions, the first power input and the
Two power inputs alternately connect the first end of the magnet exciting coil of electromagnetic lock and the second end respectively so that the electricity of input magnet exciting coil
Stream is in opposite direction, and the current controling element is connected in series in first working condition or second working condition is formed
Loop in, flow through the electric current in the loop for changing, so that dirty in the first working condition and the second working condition
The electric current for entering magnet exciting coil is different so that the magnetic field that magnet exciting coil is produced is also different, meets electromagnetic lock locking respectively with unlocking
Demand, controls electromagnetic lock by single power supply so as to the drive circuit is realized, reduces number of power sources, eliminate custom circuit
Complicated step-down part, enormously simplify peripheral circuit, reduces the design difficulty and design cost of peripheral circuit, solve electricity
During magnetic padlock reverse excitation power it is excessive cannot resilience release problem, improve the reliability of system.
2. the electromagnetic lock drive circuit that the utility model is provided, the current controling element includes inductively or capacitively, preferably
For electric capacity, the electric capacity can realize the effect for being depressured current limliting, as electric capacity has the effect of separated by direct communication, be energized to from electric capacity and fill
During full electricity, field coil current is progressively smaller until as 0, and voltage is progressively smaller until as 0, electromagnetic lock in whole process
Power compare positive attracting process power and substantially reduce due to sealing in for electric capacity, the size of its power can be different by selecting
Capacitance electric capacity adjusting, when the magnitude of field intensity phase for being adjusted to magnetic field intensity that magnet exciting coil reversely produces and permanent magnet
Deng, it is in opposite direction when, the release function of electromagnetic lock reaches most preferably, solves the problems, such as in prior art that electromagnetic lock is released and can not let go,
Improve the reliability of system.
3. the electromagnetic lock drive circuit described in the utility model embodiment, sets in the two ends parallel connection of the current controling element
Bleeder resistance is equipped with, be its objective is that the electric charge release before the next release moment arrives being full of electric capacity is finished, be next unlatching
Afterflow is prepared, it is ensured that each normal work of flow-control element.
4. the electromagnetic lock drive circuit described in the utility model embodiment, by DPDT gate-controlled switch described first
Switch between working condition and second working condition, DPDT gate-controlled switch can be dpdt relay, two-way
Switch simultaneously, and be easily controlled, improve adhesive and the rate of release of electromagnetic lock.
Description of the drawings
In order to be illustrated more clearly that the utility model specific embodiment or technical scheme of the prior art, below will be right
Needed for specific embodiment or description of the prior art, accompanying drawing to be used is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Structure charts of the Fig. 1 for electromagnetic lock；
Fig. 2A, Fig. 2 B, Fig. 2 C is respectively the structure of the specific example of electromagnetic lock drive circuit in the utility model embodiment 1
Figure；
Structure charts of the Fig. 3 for an instantiation of the electromagnetic lock drive circuit in the utility model embodiment 2.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than the embodiment of whole.Based on the embodiment in the utility model, this
The every other embodiment obtained under the premise of creative work is not made by field those of ordinary skill, belongs to practical
Novel protected scope.
In description of the present utility model, it should be noted that term " " center ", " on ", D score, "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " is, based on orientation shown in the drawings or position relationship, to be only
For the ease of describe the utility model and simplify description, rather than indicate or imply indication device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,
The connection of two element internals is can also be, can be wireless connection, or wired connection.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
As long as additionally, technical characteristic involved in the utility model different embodiments disclosed below is each other
Do not constitute conflict can just be combined with each other.
Embodiment 1
A kind of electromagnetic lock drive circuit is provided in the present embodiment, for driving the locking or unlocking action of electromagnetic lock, the electricity
The structure of magnetic padlock is as shown in figure 1, the electromagnetic lock drive circuit accesses the first end and second of the magnet exciting coil 4 of the electromagnetic lock
End, for controlling the working condition of electromagnetic lock by the electric current of control input electromagnetic lock magnet exciting coil.
Electromagnetic lock drive circuit in the present embodiment as shown in Figure 2 A and 2 B, including the first power input, second electric
Source input and current controling element, wherein the first power input and second source input can be directly connected to dc source
Or connection by the dc source of AC power output after rectified, the first power input and second source input is respectively
The positive terminal and negative pole end of power supply.
Electromagnetic lock drive circuit in the present embodiment has two working conditions：
First working condition be, for example, electromagnetic lock blocking, as shown in Figure 2 A, electromagnetic lock drive circuit in locking,
First power input is connected with the second end of the magnet exciting coil of electromagnetic lock, the second source input and electromagnetic lock
The first end connection of magnet exciting coil.Now, the magnet exciting coil output of electromagnetic lock and the permanent magnet direction identical magnetic field of electromagnetic lock,
So that magnetic field intensity strengthens, the iron prop 1 of electromagnetic lock overcome the elastic force of spring 2 move and with 3 adhesive of permanent magnet, realize locking.
Second working condition is, for example, unlocking condition, as shown in Figure 2 B, when electromagnetic lock drive circuit is unlocked, its first power supply
Input is connected with the first end of the magnet exciting coil of electromagnetic lock, and the of the magnet exciting coil of the second source input and electromagnetic lock
Two ends connect, and electric current accesses direction with blocking conversely, current controling element is connected in series in the second working condition institute shape
Into loop in.As shown in Figure 2 B, current controling element can be arranged on the excitation wire of the first power input and electromagnetic lock
Between the first end of circle, it is also possible to be arranged on the second end of second source input and the magnet exciting coil of electromagnetic lock, select wherein
Position arrange, certain two positions are respectively provided with also possible.
Used as a kind of specific implementation of current controling element, as shown in Figure 2 C, current controling element can select electricity
Hold, as capacitance can be selected as needed, and access loop is simple and convenient, low cost, therefore current controling element is excellent
Electric capacity is selected, the capacitances in series flows through this for changing between second source input and the second end of magnet exciting coil in Fig. 2 C
The electric current in loop.During unlocking, the power of electromagnetic lock is compared positive attracting process power and is dropped significantly due to sealing in for electric capacity
It is low, when be adjusted to the magnetic field intensity that magnet exciting coil reversely produces it is equal with the magnitude of field intensity of permanent magnet, it is in opposite direction when, it is electric
The release function of magnetic padlock reaches most preferably, solves the problems, such as in prior art that electromagnetic lock is released and can not let go, improves the reliability of system
Property.It is in order to ensure that the electric charge on electric capacity fully discharges every time, as further optimal way, also in parallel at the two ends of the electric capacity
Setting is released element, and element of releasing can be the bleeder resistance in Fig. 2 C, be arranged in parallel resistance at the two ends of electric capacity, for releasing
Electric charge in loop, its objective is that the electric charge release before the next release moment arrives being full of electric capacity is finished, is next unlatching
Afterflow is prepared, it is ensured that each normal work of electric capacity.
Used as the implementation that other can be replaced, current controling element to be also an option that and have current control for inductance etc.
The device of function, its position can select to be connected in a second operative state the first power input with the first of magnet exciting coil
Between end or it is connected between second source input and the second end of magnet exciting coil, as long as in returning that the second working condition is formed
The change that current controling element realizes power is accessed in road.Of course for the electric current for realizing unlocking condition and blocking not
Together, it is also possible to which current controling element is arranged in the morphogenetic loop of latch like, increase the electric current that blocking loop is formed
Greatly, adjusting for electric current can also be controlled by current amplifier or the triode with Current amplifier effect so that unlocked
When electric current of electric current when being less than locking, during unlocking, power is reduced, and the release function of electromagnetic lock is strengthened, and can realize smoothly unlocking
.Therefore, above-mentioned first working condition and the second working condition can be exchanged, that is to say, that in unlocking condition and blocking
It is as long as changing electric current it is achieved that ensureing that unlocking electric current is less than latching current, any under this utility model design
Implementation is belonged in protection domain of the present utility model.
Electromagnetic lock drive circuit in the present embodiment, under locking and unlocking condition, the first power input and second source
Input alternately connects the first end of the magnet exciting coil of electromagnetic lock and the second end respectively so that the sense of current of input magnet exciting coil
Conversely, the current controling element is connected in series in the loop formed by the second working condition, described returning is flow through for changing
The electric current on road, so that the electric current that magnet exciting coil is flowed under the first working condition with the second working condition is different so that encourage
The magnetic field that magnetic coil is produced is also different, meets the demand of electromagnetic lock locking and release respectively, it is achieved thereby that passing through single power supply
The drive circuit of control electromagnetic lock, reduces number of power sources, eliminates the complicated step-down part of custom circuit, enormously simplify outer
Circuit is enclosed, the design difficulty and design cost of peripheral circuit is reduced, power is excessive when solving electromagnetic lock reverse excitation cannot
The problem of resilience release, improves the reliability of system.
Embodiment 2：
A kind of electromagnetic lock drive circuit is provided in the present embodiment, on the basis of embodiment 1, the first power input and
The connection of two power inputs by the dc source exported after the rectified circuit rectifies of AC power, by AC power come for electromagnetism
Lock drive circuitry.Additionally, the electromagnetic lock drive circuit in the present embodiment is being unlocked and is being closed by DPDT gate-controlled switch
Switch between lock status.
As shown in Fig. 2 the power supply of the circuit driven by electromagnetic means in the present embodiment is provided by AC power, AC power Jing bridge-type
Dc source is exported after rectifier circuit rectifies, (D1 connects output terminals A CN of the AC power for positive by commutation diode D1
Connect) the first power input of connection, it is by commutation diode D2 (D2 is reversely access) connection second source input, described whole
Diode D1 is in opposite direction with the commutation diode D2 for stream, and the second output terminals A CL of the AC power passes through two pole of rectification
Pipe D3 (D3 is reversely accessed) connects second source input, defeated by commutation diode D4 (D4 is positive to be accessed) the first power supply of connection
Enter end, the commutation diode D3 is in opposite direction with commutation diode D4, the commutation diode D3 and the commutation diode
D2 directions are identical, and commutation diode D1 is identical with D4 directions.Commutation diode D1, D2, D3, D4 herein is optional conventional
1N4007, or other suitable diodes or rectifier bridge.By the rectification circuit, AC power is converted to into direct current
Source exports, and the first power input is electrode input end, and second source input is negative input.
In order to be controlled to power supply, first is provided between the input ACL and rectification circuit of the AC power
Gate-controlled switch, first gate-controlled switch is relay K1, and the terminals of relay K1 connect the defeated of the first electronic power switch
Go out end, the input of the electronic power switch connects the first signal output part.Electronic power switch herein can be three poles
Pipe Q1, is NPN type triode, and others triode or metal-oxide-semiconductor are also suitable certainly.The base stage of triode Q1 is connected by resistance R4
The first I/O mouths of signal output part are connect, signal herein is sent by controller.The Wiring port of the collector connection relay K1 of Q1
1, sustained diode 5 is also parallel between the Wiring port 1 and Wiring port 2 of relay K1, when preventing relay K1 from disconnecting
The back-emf of generation is impacted to circuit or component damage.The Wiring port 2 of relay K1 passes through resistance R2 connection+12V
Power supply.
In the present embodiment, the electromagnetic lock drive circuit by DPDT gate-controlled switch in first working condition and
Switch between second working condition.Certainly DPDT gate-controlled switch is not adopted, but selects other gate-controlled switches to pass through
Coordinated signals (as multiple relays cooperate) can also realize above-mentioned switching, but as DPDT gate-controlled switch can be same
Shi Jinhang two-ways are controlled, therefore implement simpler convenience.DPDT gate-controlled switch herein can be DPDT
Relay K2, its first stationary contact connect the first end of the magnet exciting coil, and the second stationary contact connects the of the magnet exciting coil
Two ends；First movable contact and the 4th movable contact are all connected with second source input；Second movable contact and the 3rd movable contact are all connected with
First power input, the first stationary contact are contacted with first movable contact or the second movable contact；Second stationary contact and described
Three movable contacts or the contact of the 4th movable contact.In the present embodiment, current controling element electric capacity C1 is arranged on the 4th movable contact and
Between two power inputs, two ends parallel resistance R1 of electric capacity C1.In the present embodiment, pressure more than the 400V of electric capacity C1 is selected,
Capacity is adjusted according to the actual power that electromagnetic lock discharges, and bleeder resistance R1 synthesis power consumptions and the required time of releasing are closed
Reason is selected.
First working condition is blocking, and first stationary contact connects the first movable contact, the second stationary contact connection the
Three movable contacts, the second working condition is unlocking condition, and the first stationary contact connects the second movable contact, second stationary contact connection the
Four movable contacts, the 4th movable contact connect second source input by electric capacity C1.Wherein, the first movable contact and the 3rd movable contact are
Normally-closed contact, the terminals of dpdt relay K1 connect the output end of the second electronic power switch, when no signal input
When, relay K2 normally-closed contacts closure, after having electric current to be input into, the normally-closed contact of relay K2 is opened, and is switched to second dynamic tactile
Point and the 4th movable contact, realize DPDT.
Wherein, the second electronic power switch that control relay K2 starts is triode Q2, and the base stage of triode Q2 passes through
Resistance R5 connects the 2nd I/O mouths of signal output part, and the control signal is sent by controller, is controlled by its signal for exporting
The action of relay K2.One terminals of the collector connection relay K2 of triode Q2, the double-pole of control relay K2 are double
The switching thrown.Another terminals of relay K2 are also connected to+12V power supplys by resistance R3, in two wiring of relay K2
Sustained diode 6 is also parallel between port, prevents the back-emf that relay K2 is produced when disconnecting from impacting to circuit or unit
Device failure.The emitter stage of triode Q1 and triode Q2 is grounded respectively, and an I/O mouths and the 2nd I/O mouths also lead to respectively
Cross resistance R6, R7 ground connection.
By in the circuit driven by electromagnetic means application in the present embodiment and electromagnetic lock, specific work process is as follows：Close the door when pressing
Key, synchronous motor start slowly to close by reduction gear driving electric door, when automatically-controlled door is closed into from doorframe position about
During 5cm, the inductive switch of door bottom senses that signal transmission sends electromagnetism as master controller to master chip IC, master chip IC
Lock closure signal, provide high level, now triode Q1 conducting, relay K1 actions, civil power after rectifier bridge rectification Jing after
The contact of electrical equipment K2 flows into the magnet exciting coil of electromagnetic lock, and the magnetic direction that this electric current is produced is identical with the direction of permanent magnet, and forever
After magnets magnetic fields superposition the high-intensity magnetic field power that produces overcome the spring force of electromagnetic lock to pull iron prop until with permanent magnet adhesive, now
Powerful magnetic pull is produced due to the point blank of permanent magnet and iron prop, elastic force of its value much larger than spring, now after power-off,
Attracting state is still kept, until next door opening action, whole galvanization about 0.2S.
When downward swing door key is pressed, an I/O mouths and the 2nd I/O mouths of master chip IC control Q1 and Q2 export high level, now
Triode Q1 and Q2 are turned on, and relay K1 and K2 start action, and the rectified bridge of civil power reversely flows into the magnet exciting coil Jing of electromagnetic lock
Electric capacity C1 returns to electrical network, as electric capacity C1 has the effect of separated by direct communication, so from electric capacity be energized to it is fully charged during,
Whole field coil current is progressively smaller until as 0, and voltage is progressively smaller until that for 0, whole process electromagnetic lock power is due to electricity
Sealing in for holding is compared positive attracting process power and is substantially reduced, and the size of its power can pass through the electric capacity C1 for selecting different capacitances
To realize adjusting, when being adjusted to, the reverse magnetic field intensity for producing of magnet exciting coil is equal with the magnitude of field intensity of permanent magnet, direction
When contrary, now the release function of electromagnetic lock reaches most preferably, is fully solved the problem that can not let go, and resistance R1 releases for C1's
Resistance, it is therefore an objective to which the electric charge release before the next release moment arrives being full of electric capacity C1 is finished, is to open afterflow next time to do standard
It is standby.
Electromagnetic lock drive circuit in the present embodiment, the DC voltage or electricity after dpdt relay realizes rectification
The switching in stream direction, meets adhesive and the release excitation demand of electromagnetic lock, while realizing power by the current limliting step-down of electric capacity
Transformation, solves that electromagnetic lock delivered power is excessive and problem is not put in back suction that occur.The program realizes the suction of great-power electromagnetic lock
Close and discharge, it is high-power to meet adhesive, discharge low power requirement.
Additionally, a kind of electromagnetic lock using above-mentioned electromagnetic lock drive circuit is also provided in the present embodiment, the electromagnetic lock is encouraged
The first end of magnetic coil and the second end are accessed in above-mentioned electromagnetic lock drive circuit respectively in the manner described above, as electromagnetic lock drives
Idle characteristic and separated by direct communication characteristic in dynamic circuit using electric capacity effectively limits the small-power release request of electromagnetic lock, using double
Dpdt double-pole double-throw (DPDT) relay realizes the positive anti-switching of voltage and electric current, realizes and realizes changing for voltage or the sense of current by single power supply
Become and change power output, eliminate the complicated step-down part of custom circuit, step-down is dexterously realized by a high-voltage capacitance
Current limliting, greatly simplifies peripheral circuit, reduces the design difficulty and design cost of peripheral circuit, when solving the reverse excitation of electromagnetic lock
Power it is excessive cannot resilience release problem, realize smooth locking and unlocking.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And thus it is extended obvious change or
Among changing the protection domain created still in the utility model.
Claims (11)
1. a kind of electromagnetic lock drive circuit, it is characterised in that including the first power input, second source input and electric current control
Element processed, the electromagnetic lock drive circuit in the first working condition, the excitation wire of first power input and electromagnetic lock
The second end connection of circle, the second source input are connected with the first end of the magnet exciting coil of electromagnetic lock；The electromagnetic lock drives
In the second working condition, first power input is connected dynamic circuit with the first end of the magnet exciting coil of electromagnetic lock, described
Second source input is connected with the second end of the magnet exciting coil of electromagnetic lock, and the current controling element is connected in series in described
In the loop formed by one working condition or second working condition, for changing the electric current for flowing through the loop.
2. electromagnetic lock drive circuit according to claim 1, it is characterised in that formed in second working condition
In loop, the current controling element is arranged between the first end of the magnet exciting coil of the first power input and electromagnetic lock, or
The current controling element is arranged between the second end of the magnet exciting coil of second source input and electromagnetic lock；
Or
In the loop formed by first working condition, the current controling element is arranged on the first power input and electricity
Between second end of the magnet exciting coil of magnetic padlock, or the current controling element is arranged on encouraging for second source input and electromagnetic lock
Between the first end of magnetic coil.
3. electromagnetic lock drive circuit according to claim 2, it is characterised in that the current controling element include electric capacity or
Inductance.
4. electromagnetic lock drive circuit according to claim 3, it is characterised in that at the two ends of the current controling element
It has been arranged in parallel element of releasing.
5. the electromagnetic lock drive circuit according to claim 1 or 2 or 3 or 4, it is characterised in that the electromagnetic lock drives electricity
Road is switched between first working condition and second working condition by DPDT gate-controlled switch, and the double-pole is double
The first stationary contact for throwing gate-controlled switch connects the first end of the magnet exciting coil, and the second stationary contact connects the of the magnet exciting coil
Two ends；First movable contact and the 4th movable contact are all connected with second source input；Second movable contact and the 3rd movable contact are all connected with
First power input；
The first movable contact of the first stationary contact connection under first working condition, the second stationary contact the 3rd movable contact of connection, second
Under working condition, first stationary contact connects the second movable contact, and second stationary contact connects the 4th movable contact.
6. electromagnetic lock drive circuit according to claim 5, it is characterised in that the loop formed by the second working condition
In, the current controling element is arranged between the 4th movable contact and second source input；Or the current control
Element is arranged between second movable contact and the first power input.
7. electromagnetic lock drive circuit according to claim 6, it is characterised in that the DPDT gate-controlled switch is double-pole
Double-throw relay, its input connect the output end of the second electronic power switch, the input connection of the electronic power switch
Secondary signal output end.
8. the electromagnetic lock drive circuit according to claim 1 or 2 or 3 or 4, it is characterised in that first power input
End and second source input connect dc source or connection by the direct current exported after the rectified circuit rectifies of AC power
Source.
9. electromagnetic lock drive circuit according to claim 8, it is characterised in that in the AC power and the rectified current
The first gate-controlled switch is provided between road.
10. electromagnetic lock drive circuit according to claim 9, it is characterised in that first gate-controlled switch is relay,
Its input connects the output end of the first electronic power switch, and the input of the electronic power switch connects the first signal output
End.
The electromagnetic lock that a kind of 11. electromagnetic lock drive circuits using described in any one of claim 1-10 drive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620896719.2U CN206035123U (en) | 2016-08-17 | 2016-08-17 | Electromagnetic lock drive circuit and electromagnetic lock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620896719.2U CN206035123U (en) | 2016-08-17 | 2016-08-17 | Electromagnetic lock drive circuit and electromagnetic lock |
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| CN206035123U true CN206035123U (en) | 2017-03-22 |
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| CN201620896719.2U Active CN206035123U (en) | 2016-08-17 | 2016-08-17 | Electromagnetic lock drive circuit and electromagnetic lock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106088836A (en) * | 2016-08-17 | 2016-11-09 | 珠海格力电器股份有限公司 | Electromagnetic lock drive circuit and electromagnetic lock |
| CN107440368A (en) * | 2017-03-27 | 2017-12-08 | 梧州理想科技有限公司 | A kind of Novel storage cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106088836A (en) * | 2016-08-17 | 2016-11-09 | 珠海格力电器股份有限公司 | Electromagnetic lock drive circuit and electromagnetic lock |
| CN107440368A (en) * | 2017-03-27 | 2017-12-08 | 梧州理想科技有限公司 | A kind of Novel storage cabinet |
| CN107440368B (en) * | 2017-03-27 | 2019-04-19 | 浙江开洋木业有限公司 | A kind of Novel storage cabinet |
| CN108045256A (en) * | 2017-12-26 | 2018-05-18 | 深圳深宝电器仪表有限公司 | A kind of charging system for electric automobile and charging pile |
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| CN110021095A (en) * | 2018-10-29 | 2019-07-16 | 深圳市微开互联科技有限公司 | Detect system, door controller, server and the method for door state |
| CN110021094A (en) * | 2018-10-29 | 2019-07-16 | 深圳市微开互联科技有限公司 | The door controller and server and method of detection door state |
| CN110021095B (en) * | 2018-10-29 | 2021-04-27 | 深圳市微开互联科技有限公司 | System, door controller, server and method for detecting door state |
| CN110021094B (en) * | 2018-10-29 | 2021-04-27 | 深圳市微开互联科技有限公司 | Door controller, server and method for detecting door state |
| CN112113023A (en) * | 2020-09-30 | 2020-12-22 | 张济麟 | High-efficiency gas pressure reducing device |
| CN112727260A (en) * | 2020-12-28 | 2021-04-30 | 北京城建智控科技有限公司 | Control method and device of electromagnetic lock, medium, equipment and electromagnetic lock |
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