CN210067690U - Intelligent door lock control circuit and intelligent door lock - Google Patents
Intelligent door lock control circuit and intelligent door lock Download PDFInfo
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- CN210067690U CN210067690U CN201920225382.6U CN201920225382U CN210067690U CN 210067690 U CN210067690 U CN 210067690U CN 201920225382 U CN201920225382 U CN 201920225382U CN 210067690 U CN210067690 U CN 210067690U
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Abstract
The utility model relates to an intelligence house field discloses an intelligence lock control circuit, intelligence lock control circuit include power module, coupling in power module's voltage stabilizing module, coupling in the control module of voltage stabilizing module output, coupling in the emergent interface that charges and the coupling of voltage stabilizing module power end are in the emergent interface that charges with the module that resets between the voltage stabilizing module. The utility model discloses can utilize the emergent interface that charges to insert external power source, reset control module through the module that resets to the intelligent lock system outage that makes the abnormal conditions take place restarts, resumes normally.
Description
Technical Field
The utility model relates to an intelligence house field, concretely relates to intelligence lock control circuit and intelligent lock.
Background
In the use process of the intelligent door lock, special conditions such as system runaway, static electricity or electromagnetic wave interference can be usually encountered, the intelligent door lock can be halted at the moment, and the intelligent door lock system can be recovered to be normal only by power-off reset. However, the power supply battery of the intelligent door lock is generally arranged on the inner door lock, and people outside the door cannot restart the intelligent door lock system by pulling out the battery, so that the intelligent door lock cannot be opened.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an intelligence lock control circuit and intelligent lock to solve the above-mentioned problem that can't open intelligent lock.
The utility model discloses an adopt following technical scheme to realize:
an intelligent door lock control circuit comprises a power supply module, a voltage stabilizing module, a control module, an emergency charging interface and a reset module; the power supply module is coupled to a power end of the voltage stabilizing module and is used for supplying power to the voltage stabilizing module; the output end of the voltage stabilizing module is coupled to the control module, the voltage stabilizing module is used for outputting a stable voltage signal to the control module through the output end, and the stable voltage signal is used for providing a working power supply for the control module; the control module is used for outputting a control signal to control the intelligent door lock to work; one end of the reset module is coupled to the emergency charging interface, the other end of the reset module is coupled to the enabling end of the voltage stabilizing module, and the reset module is used for outputting a reset signal to the enabling end of the voltage stabilizing module according to an electric signal accessed by the emergency charging interface; the emergency charging interface is coupled to a power supply end of the voltage stabilizing module.
The embodiment of the utility model provides a still provide an intelligent lock, it includes foretell intelligent lock control circuit.
Compared with the prior art, the embodiment of the utility model provides an intelligence lock control circuit and intelligent lock utilizes the emergent interface that charges of intelligent lock, when inserting this emergent interface that charges with external power source, through the reset signal of the module output that resets, makes voltage stabilizing module reset output steady voltage signal, and then makes control module outage reset, and intelligent lock system resumes normally, the user alright in order to open intelligent lock.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a block diagram of an intelligent door lock control circuit provided in an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an intelligent door lock control circuit provided in an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of another intelligent door lock control circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an intelligent door lock control circuit according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of the intelligent door lock provided by the embodiment of the utility model.
Detailed Description
In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention.
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. The specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to,"; "substantially" means that a person skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely to simplify the description for describing the embodiments of the present invention, but do not indicate or imply that the device or element so referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through the inside of two members or they may be merely surface-contacting. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
Along with the improvement of living standard, the smart home has slowly entered the life of people. Among them, the most commonly used door lock is an intelligent door lock. In the use of intelligence lock, special conditions such as software system run away, static, electromagnetic wave interference can probably be met and cause the intelligent lock system crash, and the lock crash just can not be unblanked through modes such as fingerprint or password, needs to restore to normal with intelligent lock system outage reset this moment. And the power supply battery of intelligence lock is installed at interior lock usually, and the people outside the door can't restart intelligent lock system through pulling out the battery to can't open intelligent lock.
The inventor provides an intelligent door lock control circuit and an intelligent door lock through long-term research and experiments, and the intelligent door lock control circuit and the intelligent door lock can utilize an emergency charging interface of the intelligent door lock to achieve the purpose of restarting an intelligent door lock system.
As shown in fig. 1 and fig. 2, the present embodiment provides an intelligent door lock control circuit 100, which includes a power module 10, an emergency charging interface 20, a reset module 30, a voltage stabilizing module 40, and a control module 50. The power module 10 is coupled to the power source terminal VIN of the voltage stabilizing module 40; the emergency charging interface 20 is coupled between the power supply terminals VIN of the power supply module 10 and the voltage stabilizing module 40; one end of the reset module 30 is coupled to the emergency charging interface 20, and the other end is coupled to the enable end CE of the voltage stabilizing module 40; the enable terminal CE of the voltage regulation module 40 is coupled to the output terminal of the power supply module 10; the control module 50 is coupled to the output terminal VOUT of the regulator module 40.
The power module 10 is used to continuously supply power to the voltage stabilizing module 40. Further, the power supply module 10 includes a power supply circuit 11 and a protection circuit 12. The power circuit 11 outputs a power voltage signal to the voltage stabilizing module 40 at an output terminal, in this embodiment, the power circuit 11 is a dry battery pack, which includes eight dry batteries, wherein each four dry batteries are connected in series and then connected in parallel to output the power voltage signal. It is worth mentioning that the voltage of one dry battery is 1.5V, i.e. the dry battery pack outputs a supply voltage of 6V. In this embodiment, the protection circuit 12 is a first zener diode, which includes a zener diode D1 and a zener diode D2, wherein the anodes of the zener diode D1 and the zener diode D2 are respectively coupled to the anode of the parallel branch of the battery pack, and the cathodes thereof are coupled to the power source terminal VIN of the voltage stabilization module 40. The zener diode D1 and the zener diode D2 are broken down when the output power voltage increases due to a fault occurring inside the battery pack, so that the intelligent door lock control circuit 100 is short-circuited, thereby protecting other circuit elements. In addition, the zener diode D1 and the zener diode D2 prevent the current from flowing back in the circuit when the voltage output by the external power source connected to the emergency charging interface 20 is greater than the power voltage output by the power module 10.
The reset module 30 is configured to output a reset signal to the voltage stabilizing module 40 according to a voltage signal output by an external power source connected to the emergency charging interface 20. The reset module 30 includes an RC circuit 31, a switching element 32, and a second resistor 33. The RC circuit 31 is configured to alternately output a turn-on signal and a turn-off signal to the switching element 32 within a specified time period according to the voltage signal output by the emergency charging interface 20; the switching element 32 is configured to output a reset signal to the voltage stabilization module 40 according to the on signal and the off signal. Further, one end of the RC circuit 31 is coupled to the emergency charging interface 20, and the other end is coupled to the control end of the switch element 32. The switching element 32 has a first terminal coupled to the enable terminal of the voltage regulator module 40 and a second terminal grounded. Further, the RC circuit 31 includes a first capacitor and a first resistor, and the switching element 32 is a field effect transistor Q1. Specifically, the first capacitor is a capacitor C1, the first resistor is a resistor R1, and the field effect transistor Q1 is an N-MOS transistor. The gate G of the fet Q1 is a control terminal, and two terminals of the capacitor CI are coupled to the emergency charging interface 20 and the gate G of the fet Q1, respectively. One end of the resistor R1 is coupled between the emergency charging interface 20 and the capacitor C1, and the other end is grounded. The drain D of the fet Q1 is coupled to the enable terminal CE of the regulator module 40 to output a reset signal, and the source S is grounded. Further, the second resistor 33 is specifically a resistor R2, and the resistor R2 is coupled between the gate G and the source S of the fet Q1. The resistor R2 is used to drain the charge between the gate G and the source S of the fet Q1, protecting the fet Q1 from breakdown.
As shown in fig. 3, in some embodiments, the switching element 32 may be a triode Q2. Specifically, the triode Q2 is an NPN triode. The base B of the transistor Q2 is a control terminal, and two terminals of the capacitor C1 are coupled to the emergency charging interface 20 and the base B of the transistor Q2, respectively. The collector C of the transistor Q2 is coupled to the enable terminal CE of the regulator module 40 to output a reset signal, and the emitter E is grounded. The resistor R2 is coupled between the collector C and the emitter E of the triode Q2.
As shown in fig. 2, the regulator module 40 is configured to output the regulated voltage signal to the control module 50, and control the output terminal VOUT of the regulator module 40 to suspend outputting the regulated voltage signal to the control module 50 for a specified time according to the reset signal received by the enable terminal CE. In this embodiment, the voltage stabilizing module 40 is a low dropout regulator. The low dropout regulator converts the received power voltage signal into a stable voltage signal and outputs the stable voltage signal to the control module 50 to supply power to the control module 50. In some embodiments, the voltage regulator module 40 may be a DC/DC converter that converts the received supply voltage signal into a regulated voltage signal for output to the control module 50 to power the control module 50. Further, the step-up DC/DC converter or the step-down DC/DC converter may be selected according to actual circumstances. For example, if the power voltage output by the power module 10 is greater than the operating voltage of the control module 50, the buck DC/DC converter may be selected; if the power supply voltage output by the power supply module 10 is less than the operating voltage of the control module 50, a boost DC/DC converter may be selected.
Further, the enable end CE of the voltage stabilizing module 40 is coupled to the output end of the power supply module 10, when the power supply module 10 outputs a voltage signal to the enable end CE of the voltage stabilizing module 40, the enable end CE of the voltage stabilizing module 40 is in a high level state, and at this time, the voltage stabilizing module 40 outputs a stable voltage signal to the control module 50 to supply power to the control module 50; when the power module 10 stops outputting the voltage signal to the enable end CE of the voltage stabilizing module 40, the enable end CE of the voltage stabilizing module 40 is in a low level state, and the voltage stabilizing module 4 stops outputting the voltage signal to the control module 50, in other words, the voltage stabilizing module 40 does not supply power to the control module 50.
The control module 50 is specifically an MCU, and is configured to output a control signal to control the operation of the intelligent door lock. It is worth mentioning that the operating voltage of the MCU is 3.3V, and the control module 50 converts the 6V power supply voltage into a stable 3.3V to supply power to the MCU. The control module 50 is the core of the intelligent door lock system, and when the control module 50 is normally powered on, the intelligent door lock can be unlocked in a fingerprint mode, a password mode and the like; when the control module 50 is not powered, the control module 50 cannot control the operation of the intelligent door lock, that is, the intelligent door lock cannot be unlocked by means of fingerprints, passwords and the like. It should be noted that if the intelligent door lock system is halted, it indicates that the control module 50 is in an abnormal state, and at this time, the control module 50 needs to be powered off and then powered back, so that the control module 50 is restarted, and the intelligent door lock system can be restored to normal.
Generally, the control module 50 may be restarted by plugging and unplugging the battery. The principle is as follows: after the battery is unplugged, the voltage stabilizing module 40 is powered off, and does not output a stable voltage signal, so that the control module 50 is powered off at the same time; after the battery is inserted again, the voltage stabilizing module 40 recovers power supply, so that the control module 50 recovers power supply at the same time, and the control module 50 is restarted.
The embodiment of the utility model provides a theory of operation does: the emergency charging interface 20 is connected to an external power source, for example, the emergency charging interface 20 can be connected to a charger with 5V voltage. At the moment of external power supply connection, because the voltage at the two ends of the capacitor C1 cannot suddenly change, the capacitor C1 can be regarded as a short circuit, the power voltage output by the external power supply is directly output to the gate G of the field-effect transistor Q1, so that the voltage of the gate G of the field-effect transistor Q1 is changed from a low level to a high level, and the field-effect transistor Q1 is turned on. The power supply module 10 simultaneously outputs a power supply voltage signal to the enable terminal CE of the voltage stabilizing module 40, so that the voltage of the enable terminal CE of the voltage stabilizing module 40 is at a high level. When the fet Q1 is turned on, the enable terminal CE of the voltage regulator module 40 is grounded, so that the voltage at the enable terminal CE of the voltage regulator module 40 is changed from a high level to a low level, and the output terminal VOUT of the voltage regulator module 40 does not output a stable voltage signal, and the control module 50 is powered off. After the external power supply is switched on, the capacitor C1 starts to charge, and the field effect transistor Q1 is in a conducting state in the process of charging the capacitor C1. After the capacitor C1 is charged, the capacitor C1 is regarded as an open circuit, and at this time, the voltage of the gate G of the fet Q1 changes from the high level to the low level, the fet Q1 is turned off, so that the voltage of the enable terminal CE of the regulator module 40 recovers to the high level, and the regulator module 40 recovers to output a stable voltage signal to supply power to the control module 50, thereby restarting the control module 50. This approach is also suitable for solving the problem of the control module 50, such as a static crash, which cannot use the reset terminal of the control module 50 for soft reset, and the control module is restarted.
Further, the resistor R1 functions to drain the charge in the capacitor C1. The time required for the reset of the control module 50 depends on the capacitance of the capacitor CI and the resistance of the resistor R1, in other words, the time required for the reset of the control module 50 is the charging time of the capacitor C1, and the capacitance of the capacitor C1 and the resistance of the resistor R1 can be adjusted according to the time required for the reset.
The embodiment of the utility model provides an intelligent lock control circuit 100 utilizes the emergent interface 20 that charges on the outer lock of intelligent lock, only needs to insert the emergent interface 20 that charges with external power supply, alright realize that the outage of intelligent lock system restarts, and is simple, convenient, makes the user also can easily resume normal with intelligent lock when the intelligent lock system appears the crash condition to open intelligent lock, improve user's experience.
As shown in fig. 4, in some embodiments, the intelligent door lock control circuit 100 may further include a pull-up module 60, and the pull-up module 60 is coupled between the power module 10 and the enable terminal CE of the voltage stabilizing module 40. The pull-up module 60 is used for clamping the voltage of the enabling end CE of the voltage stabilizing module 40 at a high level, so that the stability of the voltage of the enabling end CE of the voltage stabilizing module 40 is higher, thereby ensuring that the voltage stabilizing module 40 outputs a more stable stabilized voltage signal to the control module, and improving the stability of the intelligent door lock system. Further, the pull-up module 60 is a pull-up resistor, specifically, a resistor R3. The resistor R3 is coupled between the power module 10 and the enable terminal CE of the regulator module 40.
The embodiment of the utility model provides an intelligent lock control circuit 100 utilizes the emergent interface 20 that charges on the outer lock of intelligent lock, only needs to insert the emergent interface 20 that charges with external power supply, alright realize that the outage of intelligent lock system restarts, and is simple, convenient, makes the user also can easily resume normal with intelligent lock when the intelligent lock system appears the crash condition to open intelligent lock, improve user's experience. Meanwhile, the stability of the intelligent door lock system is improved when the intelligent door lock system normally operates.
The embodiment of the utility model provides a still provide an intelligent lock 200, it includes foretell intelligent lock control circuit 100. The bolt of the intelligent door lock 200 is controlled by the control module 50 in the intelligent door lock control circuit 100 to complete door opening or locking, so as to realize intellectualization of the intelligent door lock 200.
As shown in fig. 5, the smart door lock 200 includes an outer door lock 210 and an inner door lock 220. The outer door lock 210 may include, but is not limited to, a fingerprint identification module, a password authentication module, and a finger vein identification module. Further, the emergency charging interface 20 is disposed on the outer door lock 210, and the power module 10 is disposed on the inner door lock 220.
The embodiment of the utility model provides an intelligent lock 200 utilizes the emergent interface 20 that charges on the outer lock 210 of intelligent lock 200, only needs to insert the emergent interface 20 that charges with external power supply, alright realize that the outage of intelligent lock system restarts, and is simple, convenient, makes the user also can easily resume normal with intelligent lock when the condition appears in intelligent lock system to open intelligent lock, improve user's experience.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the embodiments of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. An intelligent door lock control circuit, comprising: the emergency charging system comprises a power supply module, a voltage stabilizing module, a control module, an emergency charging interface and a reset module;
the power supply module is coupled to a power end of the voltage stabilizing module and is used for supplying power to the voltage stabilizing module;
the output end of the voltage stabilizing module is coupled to the control module, the voltage stabilizing module is used for outputting a stable voltage signal to the control module through the output end, and the stable voltage signal is used for providing a working power supply for the control module;
the control module is used for outputting a control signal to control the intelligent door lock to work;
one end of the reset module is coupled to the emergency charging interface, the other end of the reset module is coupled to the enabling end of the voltage stabilizing module, and the reset module is used for outputting a reset signal to the enabling end of the voltage stabilizing module according to an electric signal accessed by the emergency charging interface;
the emergency charging interface is coupled to a power supply end of the voltage stabilizing module.
2. The intelligent door lock control circuit of claim 1, wherein the reset module comprises: an RC circuit and a switching element;
one end of the RC circuit is coupled to the emergency charging interface, and the other end of the RC circuit is coupled to the control end of the switch element;
the first end of the switching element is coupled to the enable end of the voltage stabilizing module, and the second end of the switching element is grounded.
3. The intelligent door lock control circuit according to claim 2, wherein the RC circuit comprises a first capacitor and a first resistor, the first capacitor is connected between the emergency charging interface and the control terminal of the switch element, and the first resistor is connected between one terminal of the first capacitor and ground.
4. The intelligent door lock control circuit according to claim 2, wherein the switching element is a field effect transistor, a gate of the field effect transistor is a control terminal, a drain of the field effect transistor is coupled to an enable terminal of the voltage regulation module, and a source of the field effect transistor is grounded;
or, the switching element is a triode, a base of the triode is a control end, a collector of the triode is coupled to an enable end of the voltage stabilizing module, and an emitter of the triode is grounded.
5. The intelligent door lock control circuit according to claim 4, wherein the reset module further comprises a second resistor coupled between the gate and the source of the FET;
or the second resistor is coupled between the base and the emitter of the triode.
6. The intelligent door lock control circuit according to claim 4, wherein the voltage stabilizing module is a low dropout linear regulator or a DC/DC converter.
7. The intelligent door lock control circuit according to any one of claims 1 to 6, further comprising a pull-up module, wherein the pull-up module is connected in series between an enable terminal of the voltage regulator module and the power supply module.
8. The intelligent door lock control circuit of claim 7, wherein the control module is an MCU.
9. The intelligent door lock control circuit according to claim 7, wherein the power module comprises a power circuit and a protection circuit, the protection circuit comprises a first zener diode, an anode of the first zener diode is coupled to the power circuit, and a cathode of the first zener diode is coupled to the zener module.
10. The intelligent door lock control circuit according to claim 7, wherein a second zener diode is coupled between the emergency charging interface and the zener module, and an anode of the second zener diode is coupled to the emergency charging interface and a cathode of the second zener diode is coupled to the zener module.
11. An intelligent door lock, characterized by comprising the intelligent door lock control circuit according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920225382.6U CN210067690U (en) | 2019-02-22 | 2019-02-22 | Intelligent door lock control circuit and intelligent door lock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920225382.6U CN210067690U (en) | 2019-02-22 | 2019-02-22 | Intelligent door lock control circuit and intelligent door lock |
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| CN210067690U true CN210067690U (en) | 2020-02-14 |
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| CN201920225382.6U Active CN210067690U (en) | 2019-02-22 | 2019-02-22 | Intelligent door lock control circuit and intelligent door lock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111321948A (en) * | 2020-02-21 | 2020-06-23 | 德施曼机电（中国）有限公司 | Intelligent lock with reset function |
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2019
- 2019-02-22 CN CN201920225382.6U patent/CN210067690U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111321948A (en) * | 2020-02-21 | 2020-06-23 | 德施曼机电（中国）有限公司 | Intelligent lock with reset function |
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