CN106088835A - Control device, electromagnetic lock and the control method thereof of a kind of electromagnetic lock - Google Patents
Control device, electromagnetic lock and the control method thereof of a kind of electromagnetic lock Download PDFInfo
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- CN106088835A CN106088835A CN201610584583.6A CN201610584583A CN106088835A CN 106088835 A CN106088835 A CN 106088835A CN 201610584583 A CN201610584583 A CN 201610584583A CN 106088835 A CN106088835 A CN 106088835A
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- driver element
- electromagnetic induction
- signal
- unit
- induction unit
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0048—Circuits, feeding, monitoring
- E05B2047/0067—Monitoring
Abstract
The invention discloses control device, electromagnetic lock and the control method thereof of a kind of electromagnetic lock, this device includes: driver element (104), electromagnetic induction unit (106) and fault detection unit (108), wherein, described fault detection unit (108), before being energized at described driver element (104), obtain the first feedback signal whether blown based on described electromagnetic induction unit (106)；Described driver element (104), for when described electromagnetic induction unit (106) is not blown i.e. normal, to described electromagnetic induction unit (106) output drive signal；Described electromagnetic induction unit (106), for realizing locking and/or unlocking of described electromagnetic lock under the driving of described driving signal.The solution of the present invention, protection in prior art can be overcome weak in-convenience in use and the defect of poor reliability, it is achieved protection is strong, easy to use and the beneficial effect of good reliability.
Description
Technical field
The invention belongs to technical field of security and protection, be specifically related to control device, electromagnetic lock and the controlling party thereof of a kind of electromagnetic lock
Method, particularly relates to a kind of electromagnetic door lock fault detect and Drive Protecting Circuit, the electromagnetic lock with this circuit and control method thereof.
Background technology
Electromagnetic lock, it is possible to use the principle of electricity magnetisation, when electric current is by stalloy, electromagnetic lock can produce powerful suction
The effect that iron plate reaches to lock a door is adsorbed in holding tightly；After the gate control system identification personnel controlling electromagnetic lock power supply are correct the most disconnected
Electricity, electromagnetic lock loses suction and can open the door.Existing a lot of household appliances, for functional and safety demand, need to use
Electromagnetic door lock.But, the protection of this electromagnetic door lock is more weak.
In prior art, there is protection weak in-convenience in use and the defect such as poor reliability.
Summary of the invention
It is an object of the invention to, for drawbacks described above, it is provided that control device, electromagnetic lock and the control thereof of a kind of electromagnetic lock
Method, the problem weak to solve the control dynamics of electromagnetic lock in prior art, reach to promote the effect of protection.
The present invention provides the control device of a kind of electromagnetic lock, including: driver element, electromagnetic induction unit and fault detect list
Unit, wherein, described fault detection unit, before being energized at described driver element, acquisition based on described electromagnetic induction unit is
No the first feedback signal blown；Described driver element, for when described electromagnetic induction unit does not blows i.e. normal, to described
Electromagnetic induction unit output drive signal；Described electromagnetic induction unit, described for realizing under the driving of described driving signal
The locking and/or unlocking of electromagnetic lock.
Alternatively, described fault detection unit, it is additionally operable to when described driver element is energized, obtains and drive letter based on described
Second feedback signal of number whether abnormal and/or described driver element whether fault.
Alternatively, described fault detection unit, including: optocoupler；Described optocoupler, is used for when described electromagnetic induction unit is normal
Time, with have the square-wave signal of predeterminated frequency be described electromagnetic induction unit normal time the first feedback signal；And, when described
When electromagnetic induction unit blows, with the first default high level signal be described electromagnetic induction unit blow time the first feedback letter
Number；And/or, described optocoupler, it is additionally operable to when described driving signal is normal, to have the second high level letter of the first preset duration
Number be described driving signal normal time the second feedback signal；And, when described driving abnormal signal and/or described driving are single
Unit fault time, with have more than the 3rd high level signal of the second preset duration be described driving abnormal signal and/or described in drive
The second feedback signal during moving cell fault.
Alternatively, described fault detection unit, also include: current limliting division module, filtration module at least one；Wherein,
Described current limliting division module, for carrying out current limliting and/or dividing potential drop to voltage and/or the electric current of described optocoupler input side；And/or,
Described filtration module, for being filtered voltage and/or the electric current of described optocoupler input side.
Alternatively, also include: controller；Described controller, for according to described first feedback signal, determines described electromagnetism
Whether sensing unit blows；And/or, described controller, it is additionally operable to, according to described second feedback signal, determine described driving signal
Whether abnormal and/or described driver element whether fault；And/or, described controller, it is additionally operable at described electromagnetic induction unit
Time normal, send the order locked and/or unlock to described driver element；Correspondingly, described driver element, it is used for receiving described
Order, and order corresponding driving signal to the output of described electromagnetic induction unit with described.
Alternatively, described controller, be additionally operable to when determine described electromagnetic induction unit blow, described driving abnormal signal,
During at least one situation of described driver element fault, output warning message and/or display information.
Alternatively, described controller, including: MCU, single-chip microcomputer at least one.
Alternatively, also include: Thermal protection unit；Described Thermal protection unit, for when driving described in the output of described driver element
The time of dynamic signal more than Preset Time, described driver element fault at least one time, block described electromagnetic induction unit institute
Power circuit.
Alternatively, described Thermal protection unit, including: critesistor, protective tube at least one.
Alternatively, wherein, described driver element, including: at least one relay, silicon controlled；Correspondingly, described driving
Cell failure, including: relay exception adhesive, relay contact adhesion, controllable silicon abnormal at least one；And/or, institute
State electromagnetic induction unit, including: solenoid.
Matching with said apparatus, another aspect of the present invention provides a kind of electromagnetic lock, including: above-described electromagnetic lock
Control device.
Matching with above-mentioned electromagnetic lock, further aspect of the present invention provides the control method of a kind of electromagnetic lock, including: more than
Before the described driver element energising of described electromagnetic lock, obtain the first feedback letter whether blown based on described electromagnetic induction unit
Number；When described electromagnetic induction unit does not blows i.e. normal, to described electromagnetic induction unit output drive signal；In described driving
Locking and/or unlocking of described electromagnetic lock is realized under the driving of signal.
Alternatively, also include: when described driver element is energized, obtain whether abnormal based on described driving signal and/or
Second feedback signal of described driver element whether fault.
Alternatively, also include: according to described first feedback signal, determine whether described electromagnetic induction unit blows；With/
Or, according to described second feedback signal, determine whether abnormal described driving signal and/or described driver element whether fault；
And/or, when described electromagnetic induction unit is normal, send the order locked and/or unlock to described driver element；Correspondingly,
By described driver element, receive described order, and believe to the driving that the output of described electromagnetic induction unit is corresponding with described order
Number.
Alternatively, also include: when described driver element export described driving signal time more than Preset Time, described in drive
Moving cell fault at least one time, block the power circuit at described electromagnetic induction unit place.
The solution of the present invention, by the basis of general electromagnetic door lock drive circuit, increases PTC Thermal protection, can be right
Abnormal driving signal plays protection cutting action, and then improves the reliability of electromagnetic door lock drive circuit.
Further, the solution of the present invention, by the basis of general electromagnetic door lock drive circuit, increase and drive abnormal event
Barrier closed-loop detection circuit, it is possible to the solenoid whether fault of detection electromagnetic door lock, and then reduce the fault rate of electromagnetic door lock.
Further, the solution of the present invention, by the basis of general electromagnetic door lock drive circuit, increase PTC Thermal protection,
Relay can also be detected or whether controllable silicon contact sticks together, and then detect the abnormal event of electromagnetic door lock and drive circuit
Barrier state is also used for fault cues, and reliability is higher, also helps the experience promoting user.
Thus, the solution of the present invention, by increasing PTC Thermal protection on the basis of general electromagnetic door lock drive circuit, solve
The problem that certainly in prior art, the control dynamics of electromagnetic lock is weak, thus, overcome protection in prior art weak in-convenience in use
Defect with poor reliability, it is achieved protection is strong, easy to use and the beneficial effect of good reliability.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or understand by implementing the present invention.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment controlling device of the electromagnetic lock of the present invention；
Fig. 2 is the structural representation of another embodiment controlling device of the electromagnetic lock of the present invention；
Fig. 3 is the structural representation of the another embodiment controlling device of the electromagnetic lock of the present invention；
Fig. 4 is the optional structural representation executing example controlling device of the electromagnetic lock of the present invention；
Fig. 5 is another optional structural representation executing example controlling device of the electromagnetic lock of the present invention；
Fig. 6 is the operation principle schematic diagram of an embodiment of the electromagnetic lock of the present invention；
Fig. 7 is the schematic flow sheet of an embodiment of the control method of the electromagnetic lock of the present invention.
In conjunction with accompanying drawing, in the embodiment of the present invention, reference is as follows:
100-power supply；102-Thermal protection unit；104-driver element；106-electromagnetic induction unit；108-fault detect list
Unit；110-controller.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described by corresponding accompanying drawing.Obviously, described embodiment is only the present invention one
Section Example rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
According to embodiments of the invention, it is provided that the control device of a kind of electromagnetic lock, the as shown in Figure 1 electromagnetic lock of the present invention
The structural representation of an embodiment controlling device.The control device of this electromagnetic lock may include that driver element 104, electromagnetism
Sensing unit 106 and fault detection unit 108.
Alternatively, the control device of this electromagnetic lock, it is also possible to including: power supply 100.Such as: civil power can be used, as electricity
Source 100.
In one embodiment, described fault detection unit 108, may be used for before described driver element 104 is energized,
Obtain the first feedback signal whether blown based on described electromagnetic induction unit 106.
Such as: before the normally opened contact of relay K 1 closes, solenoid testing circuit, may be used for detecting solenoid (i.e.
Electromagnetic door lock solenoid L) state.
Thus, fault detection unit is passed through, it is possible to the electromagnetic induction unit whether fault of detection electromagnetic lock, and then can be
Carry out respective handling during solenoid fault, with more reliable, more safely protect electromagnetic lock.
In one embodiment, described driver element 104, may be used for not blowing at described electromagnetic induction unit 106
Time the most normal, to described electromagnetic induction unit 106 output drive signal.
Such as: when MCU sends and locks a door or unlock instruction, the driving pulse output pin (i.e. DR pin) of relay K 1 is defeated
Go out the Continuity signal (such as: the cycle is the pulse signal of 20～30 milliseconds) of driving pulse, the coil electricity of relay K 1, relay
The normally opened contact Guan Bi of device K1.
Alternatively, described driver element 104, may include that at least one relay, silicon controlled.
Correspondingly, described driver element 104 fault, may include that relay exception adhesive, relay contact adhesion, can
At least one control silicon abnormal.
Such as: driver element, can be relay or controllable silicon.
Such as: relay drive circuit.
Thus, being driven electromagnetic induction unit by relay, controllable silicon etc., type of drive is easy, and reliability
High.
In one embodiment, described electromagnetic induction unit 106, may be used under the driving of described driving signal real
Show locking and/or unlocking of described electromagnetic lock.
Such as: make the electromagnetic induction unit of electromagnetic lock be energized (such as: be energized 20～30 milliseconds), by electromagnetic door lock
Portion's structure, makes electromagnetic door lock lock or unlocks.
Alternatively, described electromagnetic induction unit 106, may include that solenoid.
Such as: solenoid L of electromagnetic door lock, can be found in the example shown in Fig. 6.
Thus, electromagnetic induction, simple in construction, and induction mode are realized by solenoid safe and reliable.
In an optional embodiment, described fault detection unit 108, it is also possible to at described driver element 104
During energising, obtain the second feedback letter of and/or described driver element whether abnormal based on described driving signal 104 whether fault
Number.
Such as: when the normally opened contact of relay K 1 closes, solenoid testing circuit, may be used for detecting relay contact
Whether adhesion.
Such as: such as: when the normally opened contact of relay K 1 closes, optocoupler U1 ends.
Such as: whether detection relay or controllable silicon contact stick together.
Thus, by fault detection unit, the abnormal failure state of detection electromagnetic door lock and drive circuit is for fault
Prompting, can play protection cutting action to abnormal driving signal, improve the reliability of electromagnetic door lock drive circuit, reduce electricity
The fault rate of magnetic gate lock.
Alternatively, described fault detection unit 108, may include that optocoupler.
Such as: at the positive half cycle of civil power, when the voltage of civil power is more than certain value (such as: the magnitude of voltage preset), optocoupler
U1 turns on, and feedback signal FB of solenoid testing circuit is correspondingly pulled to low level；Otherwise, feedback signal FB is high level,
Can be found in the example shown in Fig. 6.
In an optional example, described optocoupler, may be used for when described electromagnetic induction unit 106 is normal, to have
The square-wave signal of predeterminated frequency be described electromagnetic induction unit 106 normal time the first feedback signal；And, when described electromagnetism sense
When answering unit 106 to blow, with the first default high level signal be described electromagnetic induction unit 106 blow time the first feedback letter
Number.
Such as: when coil (i.e. electromagnetic door lock solenoid L) is normal, feedback signal FB of solenoid testing circuit can be
The square-wave signal of fixed frequency.
Such as: when coil (i.e. electromagnetic door lock solenoid L) blows, feedback signal FB of solenoid testing circuit can be
Fixing high level signal.
In an optional example, described optocoupler, it is also possible to for when described driving signal is normal, pre-to have first
If the second feedback signal that the second high level signal of duration is time to be described driving signal normal；And, when described driving signal
When exception and/or described driver element 104 fault, it is described to have more than the 3rd high level signal of the second preset duration
Drive the second feedback signal when abnormal signal and/or described driver element 104 fault.
Such as: when the pulse signal of relay K 1 is normal, relay K 1 can only turn on 20～30 milliseconds, then solenoid
Feedback signal FB of testing circuit can be the high level of 20～30 milliseconds.
Such as: when the normally opened contact adhesion of the pulse signal exception of relay K 1 or relay K 1, feedback signal FB can
Think ＞ 30 milliseconds and the high level of≤300 milliseconds.Such as: the shortest time that this high level keeps, can be by abnormal signal
Load time determines.And for example: the maximum duration that this high level keeps, can determine according to the guard time of PTC.
Thus, realizing fault detect by optocoupler, detection mode is simple, and testing result reliability is high.
Alternatively, described fault detection unit 108, it is also possible to including: current limliting division module, filtration module at least it
One.
In an optional example, described current limliting division module, may be used for the voltage to described optocoupler input side and/or
Electric current carries out current limliting and/or dividing potential drop.
Such as: example shown in Figure 6, by the current limliting dividing potential drop effect of resistance R20 and resistance R21, optocoupler can be avoided
U1 is excessive and breakdown due to voltage and/or the electric current of input.
In an optional example, described filtration module, may be used for the voltage to described optocoupler input side and/or electric current
It is filtered.
Such as: example shown in Figure 6, electric capacity C16 can play filter action, can be to the voltage of input optocoupler U1
And/or electric current is filtered processing, be conducive to improving the reliability of optocoupler U1 work.
Thus, by current limliting dividing potential drop and the filtration of current limliting division module, filtration module etc., the essence of optocoupler work can be promoted
Parasexuality and reliability.
In an optional embodiment, example shown in Figure 2, it is also possible to including: controller 110.
In an optional example, described controller 110, may be used for according to described first feedback signal, determine described
Whether electromagnetic induction unit 106 blows.
Such as: MCU can be by detection feedback signal FB, it is judged that electromagnetic door lock whether fault.
In an optional example, described controller 110, it is also possible to for according to described second feedback signal, determine institute
State whether abnormal driving signal and/or described driver element 104 whether fault.
Such as: MCU, by detection feedback signal FB, judges whether pulse signal exception or relay contact adhesion.
In an optional example, described controller 110, may be used for when described electromagnetic induction unit 106 is normal, to
Described driver element 104 sends the order locked and/or unlock.
Correspondingly, described driver element 104, may be used for receiving described order, and defeated to described electromagnetic induction unit 106
Go out the driving signal corresponding with described order.
Such as: when MCU sends and locks a door or unlock instruction, the driving pulse output pin (i.e. DR pin) of relay K 1 is defeated
Go out the Continuity signal of driving pulse.
Thus, combine fault detection unit to the detection of fault and control by controller, can more preferably, more safely carry
Rising the reliability of fault detect, Consumer's Experience is good.
In an optional example, described controller 110, it is also possible to for when determining that described electromagnetic induction unit 106 burns
During at least one situation of disconnected, described driving abnormal signal, described driver element 104 fault, output warning message and/or display
Information.
Such as: may be used for fault cues.
Thus, by the prompting to failure detection result, user can be pointed out in time electromagnetic lock to be intervened and safeguard,
Safety is higher, and hommization is good.
Alternatively, described controller 110, may include that MCU, single-chip microcomputer at least one.
Thus, by the controller of the various ways such as MCU, single-chip microcomputer, range and the use of electromagnetic lock can be promoted
Motility, property easy to use is more preferable.
In an optional embodiment, example shown in Figure 3, it is also possible to including: Thermal protection unit 102.
In an optional example, described Thermal protection unit 102, may be used for when described driver element 104 exports described
Drive signal time more than Preset Time, described driver element 104 fault at least one time, block described electromagnetic induction list
The power circuit at unit 106 places.
Such as: when relay K 1 exports the overlong time of driving pulse (i.e. pulse signal) or the normally opened tactile of relay K 1
During the abnormal adhesive of point (such as: the abnormal adhesive during normally opened contact fault adhesion of relay K 1), PTC heating presents high-impedance state,
Cut off solenoid (i.e. electromagnetic door lock solenoid L) power circuit electric current, prevent solenoid (i.e. electromagnetic door lock solenoid L) from burning,
Can be found in the example shown in Fig. 6.
Thus, by Thermal protection unit, it is possible to the solenoid of protection electromagnetic lock, and then protection electromagnetic lock, be conducive to improving
The safety of electromagnetic lock work.
Alternatively, described Thermal protection unit 102, may include that critesistor, protective tube at least one.
Such as: PTC thermistor.
Thus, by critesistor, can promote sensitivity and the precision of Thermal protection, Consumer's Experience is good.
It addition, when actually used, it is also possible to according to the actual requirements, in the control device of electromagnetic lock, can be with selectivity
Use above-mentioned each unit or each equipment.
In an optional example, example shown in Figure 4, the control device of this electromagnetic lock, may include that power supply
100, Thermal protection unit 102, driver element 104, electromagnetic induction unit 106 and fault detection unit 108.
Such as: electromagnetic induction unit 106 can be protected by Thermal protection unit 102.
Such as: driving signal and/or driver element 104 can be protected by fault detection unit 108.To driving signal
And/or during the protection of driver element 104, the respective feedback signal that fault detection unit 108 obtains can be carried out manually
Judging or judge by means of other convenient instrument or equipment, property easy to use is preferable.
In another optional example, example shown in Figure 5, the control device of this electromagnetic lock, may include that power supply
100, Thermal protection unit 102, driver element 104 and electromagnetic induction unit 106.
Such as: in some have only to carry out the electromagnetic lock of Thermal protection, a Thermal protection unit 102 is only used to carry out Thermal protection i.e.
Can, on the one hand ensure that the reliability of the Thermal protection controlling device of electromagnetic lock；On the other hand the control dress of electromagnetic lock is simplified
The circuit structure put, saves hardware cost, also improves the reliability of electromagnetic lock work.
Thus, by being adjusted flexibly alternatively and using, the convenience that user uses can be promoted, expand making of electromagnetic lock
Use scope.
Through substantial amounts of verification experimental verification, use the technical scheme of the present embodiment, by general electromagnetic door lock drive circuit
On the basis of, increase PTC Thermal protection, abnormal driving signal can be played protection cutting action, and then raising electromagnetic door lock drives
The reliability on galvanic electricity road.
According to embodiments of the invention, additionally provide a kind of electromagnetic lock controlling device corresponding to electromagnetic lock.This electromagnetism
Lock may include that the control device of above-described electromagnetic lock.
In one embodiment, electromagnetic lock (such as: electromagnetic door lock), power supply 100, driver element 104 and can be included
Electromagnetic induction unit 106.The drive circuit of this electromagnetic lock (such as: electromagnetic door lock), all uses the control mode of open loop, the most logical
Extra pulse signal control relay or silicon controlled contact break-make, make the solenoid of electromagnetic door lock be energized, power-off, play lock,
Unlocking function.The drive circuit of this opened loop control, measure unprotected for abnormal signal, and for the spiral shell of electromagnetic door lock
Whether coil destroys the most is not detected arbitration functions.
In one embodiment, electromagnetic lock adds Thermal protection unit 102 and fault detection unit 108.
Such as: example shown in Figure 6, this electromagnetic lock, may include that power supply (such as: civil power) 100, Thermal protection list
Unit (such as: PTC thermistor) 102, driver element (such as: relay drive circuit) 104, electromagnetic induction unit are (such as: electricity
Solenoid L of magnetic gate lock) 106, fault detection unit (such as: solenoid testing circuit) 108 and controller (such as: MCU)
110.Wherein, AC_L represents the live wire of civil power, and AC_N represents the zero line of civil power, and Detec represents the detection of fault detection unit 108
Point.
In one embodiment, relay drive circuit, may include that relay K 1 and diode D15.
Such as: diode D15 can be fly-wheel diode.
Such as: when MCU sends and locks a door or unlock instruction, the driving pulse output pin (i.e. DR pin) of relay K 1 is defeated
Go out the Continuity signal (such as: the cycle is the pulse signal of 20～30 milliseconds) of driving pulse, the coil electricity of relay K 1, relay
The normally opened contact Guan Bi of device K1, makes electromagnetic door lock solenoid L be energized (such as: be energized 20～30 milliseconds), by electromagnetic door lock
Internal structure, makes electromagnetic door lock lock or unlocks.
In one embodiment, Thermal protection unit 102, may include that semistor (i.e. PTC).
In one example, overlong time or the relay K 1 of driving pulse (i.e. pulse signal) is exported when relay K 1
Normally opened contact exception adhesive (such as: the abnormal adhesive during normally opened contact fault adhesion of relay K 1) time, PTC heating presents
High-impedance state, cuts off solenoid (i.e. electromagnetic door lock solenoid L) power circuit electric current, prevents solenoid (i.e. electromagnetic door lock solenoid
L) burn.
In one embodiment, solenoid testing circuit, may include that resistance R19, resistance R20, resistance R21, resistance
R24, optocoupler U1, electric capacity C12, electric capacity C16 and diode D2.
Such as: diode D2, can be clamp diode, optocoupler U1 can be protected by the way of voltage clamp.
Such as: resistance R19, resistance R20, can be current-limiting resistance.
Such as: electric capacity C12, can be filter capacitor.
In one example, before the normally opened contact of relay K 1 closes, solenoid testing circuit, may be used for detecting spiral shell
The state of coil (i.e. electromagnetic door lock solenoid L).
Such as: at the positive half cycle of civil power, when the voltage of civil power is more than certain value (such as: the magnitude of voltage preset), optocoupler
U1 turns on, and feedback signal FB of solenoid testing circuit is correspondingly pulled to low level；Otherwise, feedback signal FB is high level.
Such as: by the current limliting dividing potential drop effect of resistance R20 and resistance R21, can avoid optocoupler U1 due to the voltage of input and/
Or electric current is excessive and breakdown.
Such as: electric capacity C16 can play filter action, the voltage of input optocoupler U1 and/or electric current can be filtered
Process, be conducive to improving the reliability of optocoupler U1 work.
Alternatively, when coil (i.e. electromagnetic door lock solenoid L) is normal, feedback signal FB of solenoid testing circuit is permissible
Square-wave signal for fixed frequency.
Alternatively, when coil (i.e. electromagnetic door lock solenoid L) blows, feedback signal FB of solenoid testing circuit is permissible
For fixing high level signal.
Now, MCU can be by detection feedback signal FB, it is judged that electromagnetic door lock whether fault.
In one example, when the normally opened contact of relay K 1 closes, solenoid testing circuit, may be used for detection and continue
Appliance contact whether adhesion.
Such as: when the normally opened contact of relay K 1 closes, optocoupler U1 ends.
Alternatively, when the pulse signal of relay K 1 is normal, relay K 1 can only turn on 20～30 milliseconds, then helical
Feedback signal FB of circle testing circuit can be the high level of 20～30 milliseconds.
Alternatively, when the normally opened contact adhesion of the pulse signal exception of relay K 1 or relay K 1, feedback signal FB
Can be ＞ 30 milliseconds and the high level of≤300 milliseconds.
Such as: the shortest time that this high level keeps, can be determined by the load time of abnormal signal.Such as: due to choosing
The guard time of type PTC is to load 300ms continuously just to protect, and abnormal signal such as loads 100ms, then high-level retention time is
100ms。
Such as: the maximum duration that this high level keeps, can determine according to the guard time of PTC.Such as: type selecting PTC
Guard time is to load cut-out loop current after 300ms continuously, then high level keeps maximum duration to be 300ms.
Now, MCU, by detection feedback signal FB, judges whether pulse signal exception or relay contact adhesion.
The process realized due to the electromagnetic lock of the present embodiment and function essentially correspond to the dress shown in earlier figures 1 to Fig. 5
Embodiment, principle and the example put, therefore the most detailed part in the description of the present embodiment, may refer to being correlated with in previous embodiment
Illustrate, do not repeat at this.
Through substantial amounts of verification experimental verification, use technical scheme, by the base at general electromagnetic door lock drive circuit
On plinth, increase and drive abnormal failure closed-loop detection circuit, it is possible to the solenoid whether fault of detection electromagnetic door lock, and then reduce electricity
The fault rate of magnetic gate lock.
According to embodiments of the invention, additionally provide the control method of a kind of electromagnetic lock corresponding to electromagnetic lock, such as Fig. 7 institute
Show the schematic flow sheet of an embodiment of the method for the present invention.The control method of this electromagnetic lock may include that
At step S110, before the described driver element 104 of above-described electromagnetic lock is energized, obtain based on described electricity
The first feedback signal whether magnetic induction unit 106 blows.
Such as: before the normally opened contact of relay K 1 closes, solenoid testing circuit, may be used for detecting solenoid (i.e.
Electromagnetic door lock solenoid L) state.
Thus, fault detection unit is passed through, it is possible to the electromagnetic induction unit whether fault of detection electromagnetic lock, and then can be
Carry out respective handling during solenoid fault, with more reliable, more safely protect electromagnetic lock.
At step S120, when described electromagnetic induction unit 106 does not blows i.e. normal, to described electromagnetic induction unit
106 output drive signals.
Such as: when MCU sends and locks a door or unlock instruction, the driving pulse output pin (i.e. DR pin) of relay K 1 is defeated
Go out the Continuity signal (such as: the cycle is the pulse signal of 20～30 milliseconds) of driving pulse, the coil electricity of relay K 1, relay
The normally opened contact Guan Bi of device K1.
At step S130, under the driving of described driving signal, realize locking and/or unlocking of described electromagnetic lock.
Such as: make the electromagnetic induction unit of electromagnetic lock be energized (such as: be energized 20～30 milliseconds), by electromagnetic door lock
Portion's structure, makes electromagnetic door lock lock or unlocks.
In an optional embodiment, it is also possible to including: when described driver element 104 is energized, obtain based on described
Drive signal whether abnormal and/or the second feedback signal of described driver element 104 whether fault.
Such as: when the normally opened contact of relay K 1 closes, solenoid testing circuit, may be used for detecting relay contact
Whether adhesion.
Such as: such as: when the normally opened contact of relay K 1 closes, optocoupler U1 ends.
Such as: whether detection relay or controllable silicon contact stick together.
Thus, by fault detection unit, the abnormal failure state of detection electromagnetic door lock and drive circuit is for fault
Prompting, can play protection cutting action to abnormal driving signal, improve the reliability of electromagnetic door lock drive circuit, reduce electricity
The fault rate of magnetic gate lock.
In an optional embodiment, it is also possible to including: according to described first feedback signal and/or described second feedback
Signal carries out the step processed.
In one example, according to described first feedback signal, determine whether described electromagnetic induction unit 106 blows.
Such as: MCU can be by detection feedback signal FB, it is judged that electromagnetic door lock whether fault.
In one example, according to described second feedback signal, determine that described driving signal is the most abnormal and/or described
Driver element 104 whether fault.
Such as: MCU, by detection feedback signal FB, judges whether pulse signal exception or relay contact adhesion.
In one example, when described electromagnetic induction unit 106 is normal, send to described driver element 104 lock and/
Or the order unlocked.
Correspondingly, by described driver element 104, receive described order, and to the output of described electromagnetic induction unit 106 with
The driving signal that described order is corresponding.
Such as: when MCU sends and locks a door or unlock instruction, the driving pulse output pin (i.e. DR pin) of relay K 1 is defeated
Go out the Continuity signal of driving pulse.
Thus, combine fault detection unit to the detection of fault and control by controller, can more preferably, more safely carry
Rising the reliability of fault detect, Consumer's Experience is good.
In an optional embodiment, it is also possible to including: when described driver element 104 exports described driving signal
Between more than Preset Time, described driver element 104 fault at least one time, block described electromagnetic induction unit 106 place
Power circuit.
Such as: when relay K 1 exports the overlong time of driving pulse (i.e. pulse signal) or the normally opened tactile of relay K 1
During the abnormal adhesive of point (such as: the abnormal adhesive during normally opened contact fault adhesion of relay K 1), PTC heating presents high-impedance state,
Cut off solenoid (i.e. electromagnetic door lock solenoid L) power circuit electric current, prevent solenoid (i.e. electromagnetic door lock solenoid L) from burning,
Can be found in the example shown in Fig. 6.
Thus, by Thermal protection unit, it is possible to the solenoid of protection electromagnetic lock, and then protection electromagnetic lock, be conducive to improving
The safety of electromagnetic lock work.
The process realized due to the method for the present embodiment and function essentially correspond to the reality of the electromagnetic lock shown in earlier figures 6
Execute example, principle and example, therefore the most detailed part in the description of the present embodiment, may refer to the related description in previous embodiment,
Do not repeat at this.
Through substantial amounts of verification experimental verification, use technical scheme, by the base at general electromagnetic door lock drive circuit
On plinth, increase PTC Thermal protection, additionally it is possible to whether detection relay or controllable silicon contact stick together, and then detection electromagnetic door lock
And the abnormal failure state of drive circuit, reliability is higher, also helps the experience promoting user.
To sum up, skilled addressee readily understands that, on the premise of not conflicting, above-mentioned each advantageous manner can be certainly
By ground combination, superposition.
The foregoing is only embodiments of the invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., within should be included in scope of the presently claimed invention.
Claims (15)
1. the control device of an electromagnetic lock, it is characterised in that driver element (104), electromagnetic induction unit (106) and fault inspection
Survey unit (108), wherein,
Described fault detection unit (108), before being energized at described driver element (104), obtains based on described electromagnetic induction
The first feedback signal whether unit (106) blows；
Described driver element (104), for when described electromagnetic induction unit (106) is not blown i.e. normal, to described electromagnetism sense
Answer unit (106) output drive signal；
Described electromagnetic induction unit (106), for realize under the driving of described driving signal described electromagnetic lock lock and/or
Unlock.
Device the most according to claim 1, it is characterised in that described fault detection unit (108), is additionally operable to drive described
During moving cell (104) energising, obtain and/or described driver element (104) whether abnormal based on described driving signal whether fault
The second feedback signal.
Device the most according to claim 2, it is characterised in that described fault detection unit (108), including: optocoupler；
Described optocoupler, is used for when described electromagnetic induction unit (106) is normal, is described to have the square-wave signal of predeterminated frequency
The first feedback signal when electromagnetic induction unit (106) is normal；And, when described electromagnetic induction unit (106) is blown, with in advance
If the first high level signal be the described electromagnetic induction unit (106) the first feedback signal when blowing；And/or,
Described optocoupler, with have the second high level signal of the first preset duration be described driving signal normal time second feedback
Signal；And, it is described driving abnormal signal and/or described to have more than the 3rd high level signal of the second preset duration
The second feedback signal during driver element (104) fault.
Device the most according to claim 3, it is characterised in that described fault detection unit (108), also includes: current limliting is divided
Die block, filtration module at least one；Wherein,
Described current limliting division module, for carrying out current limliting and/or dividing potential drop to voltage and/or the electric current of described optocoupler input side；With/
Or,
Described filtration module, for being filtered voltage and/or the electric current of described optocoupler input side.
5. according to the device one of claim 2-4 Suo Shu, it is characterised in that also include: controller (110)；
Described controller (110), for according to described first feedback signal, determines whether described electromagnetic induction unit (106) burns
Disconnected；And/or,
Described controller (110), is additionally operable to according to described second feedback signal, determine described driving signal whether abnormal and/or
Described driver element (104) whether fault；And/or,
Described controller (110), is additionally operable to, when described electromagnetic induction unit (106) is normal, send out to described driver element (104)
Serve lock and/or the order unlocked；
Correspondingly, described driver element (104), be used for receiving described order, and to the output of described electromagnetic induction unit (106) with
The driving signal that described order is corresponding.
Device the most according to claim 5, it is characterised in that described controller (110), is additionally operable to when determining described electromagnetism
Sensing unit (106) blows, at least one situation of described driving abnormal signal, described driver element (104) fault time, output
Warning message and/or display information.
7. according to the device described in claim 5 or 6, it is characterised in that described controller (110), including: MCU, single-chip microcomputer
At least one.
8. according to the device one of claim 2-7 Suo Shu, it is characterised in that wherein,
Described driver element (104), including: at least one relay, silicon controlled；
Correspondingly, described driver element (104) fault, different including: relay exception adhesive, relay contact adhesion, controllable silicon
At least one often conducting；
And/or,
Described electromagnetic induction unit (106), including: solenoid.
9. according to the device one of claim 1-8 Suo Shu, it is characterised in that also include: Thermal protection unit (102)；
Described Thermal protection unit (102), for exporting the time of described driving signal more than presetting when described driver element (104)
Time, described driver element (104) fault at least one time, the energising blocking described electromagnetic induction unit (106) place is returned
Road.
Device the most according to claim 9, it is characterised in that described Thermal protection unit (102), including: critesistor,
At least one protective tube.
11. 1 kinds of electromagnetic locks, it is characterised in that including: the control device of the electromagnetic lock as described in claim 1-10 is arbitrary.
The control method of 12. 1 kinds of electromagnetic locks, it is characterised in that including:
Before the described driver element (104) of electromagnetic lock as claimed in claim 11 is energized, obtain based on described electromagnetic induction
The first feedback signal whether unit (106) blows；
When described electromagnetic induction unit (106) is not blown i.e. normal, drive letter to the output of described electromagnetic induction unit (106)
Number；
Locking and/or unlocking of described electromagnetic lock is realized under the driving of described driving signal.
13. methods according to claim 12, it is characterised in that also include:
When described driver element (104) is energized, obtain and/or described driver element whether abnormal based on described driving signal
(104) the second feedback signal of whether fault.
14. methods according to claim 13, it is characterised in that also include:
According to described first feedback signal, determine whether described electromagnetic induction unit (106) blows；And/or,
According to described second feedback signal, determine whether abnormal described driving signal and/or described driver element (104) whether
Fault；And/or,
When described electromagnetic induction unit (106) is normal, send the order locked and/or unlock to described driver element (104)；
Correspondingly, by described driver element (104), receive described order, and to the output of described electromagnetic induction unit (106) with
The driving signal that described order is corresponding.
15. according to the method one of claim 12-14 Suo Shu, it is characterised in that also include:
When described driver element (104) exports the time of described driving signal more than Preset Time, described driver element (104) event
Barrier at least one time, block the power circuit at described electromagnetic induction unit (106) place.
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| CN201610584583.6A CN106088835A (en) | 2016-07-22 | 2016-07-22 | Control device, electromagnetic lock and the control method thereof of a kind of electromagnetic lock |
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| CN107675954A (en) * | 2017-10-31 | 2018-02-09 | 阜阳万瑞斯电子锁业有限公司 | A kind of multiple monitoring door lock |
| CN109036961A (en) * | 2018-08-08 | 2018-12-18 | 广州隽智智能科技有限公司 | A kind of intelligent switch |
| CN109356458A (en) * | 2018-10-22 | 2019-02-19 | 小黄狗环保科技有限公司 | A kind of electromagnetism lock control system and control method for Environmental-protection garbage delivery device |
| CN110160764A (en) * | 2019-05-31 | 2019-08-23 | 北京睿家科技有限公司 | Electromagnetic lock fault detection method, apparatus and system |
| CN113311270A (en) * | 2021-05-28 | 2021-08-27 | Tcl家用电器（合肥）有限公司 | Monitoring method and detection circuit of household appliance |
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