CN205078015U - Electromagnetic lock and express delivery cabinet that has this electromagnetic lock - Google Patents
Electromagnetic lock and express delivery cabinet that has this electromagnetic lock Download PDFInfo
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- CN205078015U CN205078015U CN201520669406.9U CN201520669406U CN205078015U CN 205078015 U CN205078015 U CN 205078015U CN 201520669406 U CN201520669406 U CN 201520669406U CN 205078015 U CN205078015 U CN 205078015U
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- 238000010276 construction Methods 0.000 description 4
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Abstract
The utility model discloses an electromagnetic lock, it includes drive circuit, control chip, coil and lock core. Control chip respectively with drive circuit, coil electric connection. Drive circuit for output current produces the magnetic attracting mode lock core to the coil for the coil. Control chip for whether the detecting coil satisfies is predetermine the safety condition. Control chip still is used for if the unsatisfied safety condition of predetermineeing of coil is controlled drive circuit and is stopped output current to coil. The utility model discloses still disclose an express delivery cabinet that has this electromagnetic lock. The utility model discloses an electromagnetic lock is controlled the electric current of coil to send this coil in the work preset under the safety condition, consequently, the coil is difficult for burning, and long service life.
Description
Technical field
The utility model relates to electromagnetic lock control technology field, particularly relates to a kind of electromagnetic lock and the express delivery cabinet with this electromagnetic lock.
Background technology
The coil of existing electromagnetic lock is in "on" position always, and therefore, the calorific value of coil is large, easily cause coil temperature too high, be easy to burn with induced coil, and application life is short.
Utility model content
In view of this, be necessary to provide a kind of coil not easily to burn in fact, and the electromagnetic lock of coil long service life, and there is the express delivery cabinet of this electromagnetic lock.
A kind of electromagnetic lock, it comprises drive circuit, control chip, coil and lock core.Control chip is electrically connected with drive circuit, coil respectively.Drive circuit, for outputing current to coil, produces magnetic attraction lock core for coil.Whether control chip, meet preset security condition for magnetic test coil.Control chip, if also do not meet preset security condition for coil, controls drive circuit and stops outputing current to coil.
Preferably, control chip, also for obtaining the duration outputing current to coil.Control chip, also for judging whether duration exceedes preset duration.Control chip, if also exceed preset duration for duration, controls drive circuit and stops outputing current to coil.
Preferably, it also comprises current detecting chip, and current detecting chip is electrically connected with control chip, coil respectively, current detecting chip, for obtaining the current value of electric current.Control chip, also for judging whether current value exceedes pre-set current value.Control chip, if also exceed pre-set current value for current value, controls drive circuit and stops outputing current to coil.
Preferably, it also comprises temperature detection chip, and temperature detection chip is electrically connected with control chip, coil respectively, temperature detection chip, for obtaining the temperature value of coil, control chip, for judging whether temperature value exceedes preset temperature value.Control chip, if also exceed preset temperature value for temperature value, controls drive circuit and stops outputing current to coil.
Preferably, temperature detection chip, also for obtaining the temperature value of coil, current detecting chip, also for obtaining the current value of electric current.Control chip, also for judging whether temperature value exceedes preset temperature value and judge whether current value exceedes pre-set current value.Control chip, if also exceed preset temperature value for temperature value or current value exceedes pre-set current value, controls drive circuit and stops outputing current to coil.
Preferably, drive circuit comprises current source, the first switch module, first input end and the first output, first input end is connected with control chip, first output is connected with coil, and when first input end is first signal of telecommunication, the first switch module is closed, so that current source no current exports the first output to, when first input end is second signal of telecommunication electrically contrary with first signal of telecommunication, the first switch module conducting, so that current source outputs current to the first output.
Preferably, first switch module comprises triode Q5 and FET Q3, the base stage of triode Q5 is connected with first input end, the grounded emitter of triode Q5, the colelctor electrode of triode Q5 is connected with the grid of FET Q3, and the source electrode of FET Q3 is connected with current source, and drain electrode and first output of FET Q3 are electrically connected.
A kind of express delivery cabinet, it comprises multiple memory cell, and each memory cell comprises a door body, and door body is provided with above-mentioned electromagnetic lock.
Electromagnetic lock of the present utility model, controls the electric current of coil, so that this coil works under preset security condition, and therefore, coil not easily burns, and long service life.
Accompanying drawing explanation
Fig. 1 is a kind of part-structure schematic diagram of embodiment express delivery cabinet.
Fig. 2 is the frame construction schematic diagram of electromagnetic lock in Fig. 1.
Fig. 3 is the circuit theory diagrams of drive circuit in Fig. 2.
Fig. 4 is a kind of schematic flow sheet of control method of embodiment electromagnetic lock.
Fig. 5 is the frame construction schematic diagram of another kind of embodiment electromagnetic lock.
Fig. 6 is the schematic flow sheet of the control method of another kind of embodiment electromagnetic lock.
Fig. 7 is the frame construction schematic diagram of another kind of embodiment electromagnetic lock.
Fig. 8 is the schematic flow sheet of the control method of another kind of embodiment electromagnetic lock.
Fig. 9 is the frame construction schematic diagram of another kind of embodiment electromagnetic lock.
Figure 10 is the schematic flow sheet of the control method of another kind of embodiment electromagnetic lock.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
In one embodiment, please refer to Fig. 1, this express delivery cabinet comprises multiple memory cell 10, and each memory cell 10 comprises a door body 20, and door body 20 is provided with electromagnetic lock 30.Refer to Fig. 2, this electromagnetic lock 30 comprises drive circuit 301, coil 302, control chip 303 and lock core 304.This control chip 303 is electrically connected with drive circuit 301, coil 302 respectively.The power supply of this coil 302 can produce a magnetic force with adhesive lock core 304 when flowing through.This drive circuit 301, for outputing current to coil 302.This control chip 303, also for obtaining the duration outputing current to coil 302.This control chip 303, also for judging whether duration exceedes preset duration.This control chip 303, if also exceed preset duration for duration, controls drive circuit 301 and stops outputing current to coil 302, meanwhile, and this coil 302 adhesive lock core 304 to predeterminated position, so that open this electromagnetic lock.This control chip 303, if also do not exceed preset duration for duration, controls drive circuit 301 and again outputs current to coil 302.Refer to Fig. 3, drive circuit 301 comprises current source VIN_12V, the first switch module, first input end LOCK, the first output LOCK_DRV.This first switch module is electrically connected with current source VIN_12V, first input end LOCK, the first output LOCK_DRV respectively.This first input end LOCK is connected with control chip 303, and this first output LOCK_DRV is connected with coil 302.This first switch module comprises triode Q5, FET Q3.The base stage of this triode Q5 is connected with first input end LOCK, the grounded emitter of this triode Q5, the colelctor electrode of this triode Q5 is connected with the grid of FET Q3, the source electrode of FET Q3 is connected with current source VIN_12V, FET Q3 drain electrode and the first output LOCK_DRV be electrically connected.
In order to description the utility model clearly, suppose that first signal of telecommunication is low level, second signal of telecommunication is high level.Therefore, when first input end LOCK is low level, triode Q5 turns off, so that FET Q3 ends, and the electric current of current source VIN_12V does not export by FET Q3, so that the first output LOCK_DRV no current of drive circuit 301 exports.In addition, when first input end LOCK is high level, triode Q5 conducting, so that FET Q3 conducting, the electric current of current source VIN_12V is exported by FET Q3, so that the first output LOCK_DRV of drive circuit 301 has electric current to export.Controlled conducting or the shutoff of drive circuit 301 by the signal of telecommunication of first input end LOCK, other drive circuits whether having electric current to export with the first output LOCK_DRV controlling drive circuit 301, also within protection domain of the present utility model.
In one embodiment, refer to Fig. 4, comprising the steps: of the control method of this electromagnetic lock
Step S1, outputs current to coil.
Step S2, obtains the duration outputing current to coil.
Step S3, judges whether duration exceedes preset duration.If duration exceedes preset duration, perform step S4.If duration does not exceed preset duration, re-execute step S1.
Step S4, stops outputing current to coil, and meanwhile, coil adhesive lock core to predeterminated position, so that opens electromagnetic lock.
The electromagnetic lock of the present embodiment, provides the electric current of preset duration to coil by drive circuit, so that opens this electromagnetic lock, avoid coil and be in "on" position for a long time, occurs with the problem that induced coil is easy to generate heat.Therefore, coil not easily burns and long service life.
In another kind of embodiment, refer to Fig. 5, this electromagnetic lock comprises drive circuit 301, coil 302, control chip 303, lock core 304 and current detecting chip 305.This control chip 303 is electrically connected with drive circuit 301, current detecting chip 305 respectively.This current detecting chip 305 is electrically connected with coil 302.The power supply of this coil 302 can produce a magnetic force with adhesive lock core 304 when flowing through.This drive circuit 301, for outputing current to coil 302.Current detecting chip 305, for obtaining the current value of electric current.Control chip 303, also for judging whether current value exceedes pre-set current value.Control chip 303, if also exceed pre-set current value for current value, controls drive circuit 301 and stops outputing current to coil 302.In addition, this control chip 303, if also do not exceed pre-set current value for current value, continues to output current to coil 302.
In another kind of embodiment, refer to Fig. 6, comprising the steps: of the control method of this electromagnetic lock
Step S10, outputs current to coil.
Step S11, obtains the current value of electric current.
Step S12, judges whether current value exceedes pre-set current value.If current value exceedes pre-set current value, perform step S13.If current value does not exceed pre-set current value, continue to perform step S10.
Step S13, stops outputing current to coil.
It should be noted that, before performing step S10, output current to control chip, control chip detects the current value of this electric current, judge whether this current value exceedes pre-set current value, if when current value exceedes pre-set current value, again output current to control chip, until after exporting the electric current that do not exceed pre-set current value to control chip, export this electric current not exceeding pre-set current value to coil.By this kind of mode, avoid initial High-current output to coil, so that coil burnout.In addition, the electromagnetic lock of the present embodiment, by controlling the size of electric current, avoids High-current output to coil, so that coil burnout.
In further embodiments, refer to Fig. 7, this this electromagnetic lock comprises drive circuit 301, coil 302, control chip 303, lock core 304 and temperature detection chip 306.This control chip 303 is electrically connected with drive circuit 301, temperature detection chip 306 respectively.This temperature detection chip 306 is electrically connected with coil 302.The power supply of this coil 302 can produce a magnetic force with adhesive lock core 304 when flowing through.This drive circuit 301, for outputing current to coil 302.Temperature detection chip 306, for obtaining the temperature value of coil 302, control chip 303, for judging whether temperature value exceedes preset temperature value.Control chip 303, if also exceed preset temperature value for temperature value, controls drive circuit 301 and stops outputing current to coil 302.In addition, this control chip 303, if also do not exceed pre-set current value for current value, continues to output current to coil 302.
In further embodiments, refer to Fig. 8, comprising the steps: of the control method of this electromagnetic lock
Step S20, outputs current to coil.
Step S21, obtains the temperature value of coil.
Step S22, judges whether temperature value exceedes preset temperature value.If temperature value exceedes preset temperature value, perform step S23.If current value does not exceed pre-set current value, continue to perform step S20.
Step S23, stops outputing current to coil.
The electromagnetic lock of the present embodiment, by the temperature of control coil, avoids the temperature of coil too high, so that coil burnout.
In further embodiments, refer to Fig. 9, this this electromagnetic lock comprises drive circuit 301, coil 302, control chip 303, lock core 304, current detecting chip 305 and temperature detection chip 306.This control chip 303 is electrically connected with drive circuit 301, current detecting chip 305, temperature detection chip 306 respectively.This temperature detection chip 306 is electrically connected with coil 302.Current detecting chip 305 and coil 302 are electrically connected.The power supply of this coil 302 can produce a magnetic force with adhesive lock core 304 when flowing through.This drive circuit 301, for outputing current to coil 302.Current detecting chip 305, for obtaining the current value of electric current.Temperature detection chip 306, for obtaining the temperature value of coil 302.Control chip 303, also for judging whether temperature value exceedes preset temperature value and judge whether current value exceedes pre-set current value.Control chip 303, if also exceed preset temperature value for temperature value or current value exceedes pre-set current value, controls drive circuit 301 and stops outputing current to coil.In addition, if also do not exceed preset temperature value for temperature value or current value does not exceed pre-set current value, continue to output current to coil 302.
In further embodiments, refer to Figure 10, comprising the steps: of the control method of this electromagnetic lock
Step S30, outputs current to coil.
Step S31, obtains the current value of electric current and the temperature value of coil.
Step S32, judges whether temperature value exceedes preset temperature value and judge whether current value exceedes pre-set current value.If temperature value exceedes preset temperature value or current value exceedes pre-set current value, perform step S33.If temperature value does not exceed preset temperature value and current value does not exceed pre-set current value, continue to perform step S30.
Step S33, stops outputing current to coil.
It should be noted that, before performing step S30, output current to control chip, control chip detects the current value of this electric current, judge whether this current value exceedes pre-set current value, if when current value exceedes pre-set current value, again output current to control chip, until after exporting the electric current that do not exceed pre-set current value to control chip, export this electric current not exceeding pre-set current value to coil.By this kind of mode, avoid initial High-current output to coil, so that coil burnout.In addition, the electromagnetic lock of the present embodiment, by controlling the size of current by coil, and the temperature of control coil, both avoided big current by coil, and caused the problem of coil burnout to occur, it also avoid temperature too high, cause the generation of the problem of coil burnout.
Be described in detail the detailed description of the invention of utility model above, but it is as example, the utility model does not limit and detailed description of the invention described above.For a person skilled in the art, any equivalent modifications or alternative also all among category of the present utility model that this utility model is carried out, therefore, not departing from the equalization conversion and amendment, improvement etc. done under spirit of the present utility model and spirit, all should be encompassed in scope of the present utility model.
Claims (8)
1. an electromagnetic lock, is characterized in that, it comprises drive circuit, control chip, coil and lock core; Described control chip is electrically connected with described drive circuit, described coil respectively; Described drive circuit, for outputing current to described coil, produces lock core described in magnetic attraction for described coil; Whether described control chip, meet preset security condition for detecting described coil; Described control chip, if also do not meet described preset security condition for described coil, controls described drive circuit and stops exporting described electric current to described coil.
2. electromagnetic lock according to claim 1, is characterized in that, described control chip, also exports the duration of described electric current to described coil for obtaining; Described control chip, also for judging whether described duration exceedes preset duration; Described control chip, if also exceed described preset duration for described duration, controls described drive circuit and stops exporting described electric current to described coil.
3. electromagnetic lock according to claim 1, is characterized in that, it also comprises current detecting chip, and described current detecting chip is electrically connected with described control chip, described coil respectively, described current detecting chip, for obtaining the current value of described electric current; Described control chip, also for judging whether described current value exceedes pre-set current value; Described control chip, if also exceed described pre-set current value for described current value, controls described drive circuit and stops exporting described electric current to described coil.
4. electromagnetic lock according to claim 1, it is characterized in that, it also comprises temperature detection chip, described temperature detection chip is electrically connected with described control chip, described coil respectively, described temperature detection chip, for obtaining the temperature value of described coil, described control chip, for judging whether described temperature value exceedes preset temperature value; Described control chip, if also exceed described preset temperature value for described temperature value, controls described drive circuit and stops exporting described electric current to described coil.
5. electromagnetic lock according to claim 1, is characterized in that, it also comprises temperature detection chip and current detecting chip, described temperature detection chip, also for obtaining the temperature value of described coil, described current detecting chip, also for obtaining the current value of described electric current; Described control chip, also for judging whether described temperature value exceedes described preset temperature value and judge whether described current value exceedes pre-set current value; Described control chip, if also exceed described preset temperature value for described temperature value or described current value exceedes described pre-set current value, controls described drive circuit and stops outputing current to coil.
6. electromagnetic lock according to claim 1, it is characterized in that, described drive circuit comprises current source, first switch module, first input end and the first output, described first input end is connected with described control chip, described first output is connected with described coil, when described first input end is first signal of telecommunication, described first switch module is closed, so that described current source no current exports described first output to, when described first input end is second signal of telecommunication electrically contrary with described first signal of telecommunication, described first switch module conducting, so that described current source outputs current to described first output.
7. electromagnetic lock according to claim 6, it is characterized in that, described first switch module comprises triode Q5 and FET Q3, the base stage of described triode Q5 is connected with described first input end, the grounded emitter of described triode Q5, the colelctor electrode of described triode Q5 is connected with the grid of described FET Q3, and the source electrode of described FET Q3 is connected with described current source, and drain electrode and described first output of described FET Q3 are electrically connected.
8. an express delivery cabinet, is characterized in that, it comprises multiple memory cell, and each memory cell comprises a door body, and described door body is provided with the described electromagnetic lock of one of claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669406.9U CN205078015U (en) | 2015-08-31 | 2015-08-31 | Electromagnetic lock and express delivery cabinet that has this electromagnetic lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669406.9U CN205078015U (en) | 2015-08-31 | 2015-08-31 | Electromagnetic lock and express delivery cabinet that has this electromagnetic lock |
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| CN205078015U true CN205078015U (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520669406.9U Active CN205078015U (en) | 2015-08-31 | 2015-08-31 | Electromagnetic lock and express delivery cabinet that has this electromagnetic lock |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895837A (en) * | 2018-08-25 | 2020-03-20 | 温州市已来科技有限公司 | Doorbell unlocking method without wiring and without internet connection |
| CN116225143A (en) * | 2023-03-13 | 2023-06-06 | 河北盛马电子科技有限公司 | Control circuit of vending machine with door opening cabinet |
-
2015
- 2015-08-31 CN CN201520669406.9U patent/CN205078015U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895837A (en) * | 2018-08-25 | 2020-03-20 | 温州市已来科技有限公司 | Doorbell unlocking method without wiring and without internet connection |
| CN116225143A (en) * | 2023-03-13 | 2023-06-06 | 河北盛马电子科技有限公司 | Control circuit of vending machine with door opening cabinet |
| CN116225143B (en) * | 2023-03-13 | 2023-10-27 | 河北盛马电子科技有限公司 | Control circuit of vending machine with door opening cabinet |
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