CN117081029A - Heavy-current reverse connection preventing and dual-power automatic switching circuit of intelligent lockset - Google Patents
Heavy-current reverse connection preventing and dual-power automatic switching circuit of intelligent lockset Download PDFInfo
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- CN117081029A CN117081029A CN202311324686.5A CN202311324686A CN117081029A CN 117081029 A CN117081029 A CN 117081029A CN 202311324686 A CN202311324686 A CN 202311324686A CN 117081029 A CN117081029 A CN 117081029A
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- pmos tube
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- reverse connection
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- 230000002265 prevention Effects 0.000 claims abstract description 9
- 239000000779 smoke Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 101100455956 Arabidopsis thaliana MAIN gene Proteins 0.000 description 12
- 238000002955 isolation Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
- H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
Abstract
The invention aims to disclose a heavy-current reverse connection preventing and dual-power automatic switching circuit of an intelligent lockset, which relates to the technical field of intelligent lockset control and comprises a mains supply access end, a standby power supply access end, a circuit module and a circuit output end; the commercial power access end is electrically connected with the D electrode of the first PMOS tube, the G electrode of the first PMOS tube is grounded, the S electrode of the first PMOS tube is electrically connected with the S electrode of the second PMOS tube, and the D electrode of the second PMOS tube is electrically connected with the output end of the circuit; the standby power supply access end is electrically connected with the D pole of the third PMOS tube, the G pole of the third PMOS tube is grounded, the S pole of the third PMOS tube is electrically connected with the S pole of the fourth PMOS tube, and the G pole of the fourth PMOS tube is grounded; the technical effects are as follows: the first PMOS tube and the third PMOS tube are protected by polarity reverse connection prevention, and when the polarity of the power supply is reversed, the corresponding power supply of the PMOS tube is not conducted, so that reverse connection prevention is realized. The first PMOS tube, the second PMOS tube, the third PMOS tube, the fourth PMOS tube, the NMOS tube and the diode are mutually matched to realize the connection of the commercial power or the standby power.
Description
Technical Field
The invention relates to the technical field of intelligent lockset control, in particular to a high-current reverse connection preventing and dual-power automatic switching circuit of an intelligent lockset.
Background
Along with the popularization of intelligent door locks, unmanned intelligent door locks, intelligent channel door locks, intelligent garage door locks and the like need to be powered on constantly, high-reliability operation is required, and safe operation can be realized when the mains supply is powered off, so that the problem which needs to be solved is solved. At present, mains supply and standby power supply are adopted for supplying power, the two groups of power inputs are isolated by two diodes, and particularly referring to fig. 1, when working current is not large, the voltage of the diodes is reduced to 0.5-0.7V, the power consumption per se is not large, when current 2A exceeds 1W, when current exceeds 2A, the power consumed on the diodes is rapidly increased, the diodes generate heat, even burn out, the stability and the reliability of the system are influenced, and additional useless energy loss is also increased.
In addition, with the popularization of electric vehicles at present, for intelligent door locks in special environments, such as intelligent door locks of personal garages, induction systems are also lacking when electric vehicles in the personal garages generate smoke.
In view of the above, it is necessary to develop a high-current anti-reverse connection and dual-power automatic switching circuit for intelligent locks to overcome the above-mentioned drawbacks.
Disclosure of Invention
In order to solve the technical problems, the invention aims to disclose a high-current reverse connection preventing and dual-power automatic switching circuit of an intelligent lock, so that the intelligent lock has the power supply capacity of a commercial power and a standby power supply and can realize automatic switching when the commercial power is cut off.
In order to achieve the aim of the invention, the invention provides a high-current reverse connection preventing and dual-power automatic switching circuit of an intelligent lockset, which comprises a mains supply access end, a standby power supply access end, a circuit module and a circuit output end;
the circuit output end supplies power to the intelligent lockset;
the circuit module comprises a first PMOS tube, a second PMOS tube, a third PMOS tube, a fourth PMOS tube, an NMOS tube and a diode;
the commercial power access end is electrically connected with the D electrode of the first PMOS tube, the G electrode of the first PMOS tube is grounded, the S electrode of the first PMOS tube is electrically connected with the S electrode of the second PMOS tube, and the D electrode of the second PMOS tube is electrically connected with the circuit output end;
the standby power supply access end is electrically connected with the D electrode of a third PMOS tube, the G electrode of the third PMOS tube is grounded, the S electrode of the third PMOS tube is electrically connected with the S electrode of the fourth PMOS tube, the G electrode of the fourth PMOS tube is grounded, and the D electrode of the fourth PMOS tube is electrically connected with the circuit output end;
the G electrode of the second PMOS tube is electrically connected with the D electrode of the NMOS tube, the S electrode of the NMOS tube is grounded, and the diode and the first resistor are arranged between the S electrode of the first PMOS tube and the G electrode of the NMOS tube;
and a second resistor is arranged between the D pole of the NMOS tube and the output end of the circuit.
Preferably, the G pole of the fourth PMOS transistor is grounded through a third resistor, and the third resistor is electrically connected to a wire between the diode and the first resistor.
Preferably, the resistance of the first resistor is 10kΩ, the resistance of the second resistor is 510kΩ, and the resistance of the third resistor is 1mΩ.
Preferably, when only the mains supply access terminal is turned on, the diode and the first resistor both output a high level and make the NMOS transistor conduct, so that the G electrode of the second PMOS transistor is grounded, and the second PMOS transistor conducts, so that the mains supply access terminal and the circuit output terminal conduct; meanwhile, the G of the fourth PMOS tube is extremely high level, and the fourth PMOS tube is cut off.
Preferably, when only the standby power supply access terminal is turned on, the third resistor is grounded, the G of the fourth PMOS transistor is extremely low, and the fourth PMOS transistor is turned on, so that the standby power supply access terminal is turned on with the circuit output terminal; meanwhile, the G of the NMOS tube is 0, the NMOS tube is cut off, the G of the second PMOS tube is high, and the second PMOS tube is cut off.
Preferably, when the mains supply access terminal and the standby power supply access terminal are both turned on, the diode and the first resistor both output a high level and conduct the NMOS tube, so that the G electrode of the second PMOS tube is grounded, and the second PMOS tube is conducted, so that the mains supply access terminal is conducted with the circuit output terminal; meanwhile, the G of the fourth PMOS tube is extremely high level, and the fourth PMOS tube is cut off.
Preferably, when the mains supply access terminal is powered off, only the standby power supply access terminal is turned on.
Preferably, the second PMOS transistor, the NMOS transistor and the fourth PMOS transistor form a switching circuit for the commercial power and the standby power.
Preferably, a charging circuit is arranged between the commercial power and the standby power supply.
Preferably, the intelligent lock is mounted on an access door or a garage door, and the intelligent lock is further provided with a smoke sensing unit and/or a gas sensing unit.
Compared with the prior art, the invention has the following technical effects:
(1) The first PMOS tube and the third PMOS tube are protected by polarity reverse connection prevention, and when the polarity of the power supply is reversed, the corresponding power supply of the PMOS tube is not conducted, so that reverse connection prevention is realized.
(2) The first PMOS tube, the second PMOS tube, the third PMOS tube, the fourth PMOS tube, the NMOS tube and the diode are mutually matched to realize the connection of the commercial power or the standby power, when the commercial power and the standby power exist, the standby power is isolated, the reverse leakage current of the first PMOS tube, the second PMOS tube, the third PMOS tube and the fourth PMOS tube is less than 1 mu A, the isolation effect is better, and the isolation is safer.
(3) The switching circuit of the commercial power and the standby power is formed by the second PMOS tube, the NMOS tube and the fourth PMOS tube, when the commercial power access end is powered off, only the standby power access end is connected, the standby power is started within 0.1ms, and the power is continuously supplied to the circuit output end through the standby power, so that the power supply continuity of the intelligent lockset is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of existing mains and backup power diode isolation.
FIG. 2 is a schematic block diagram of the heavy current reverse connection prevention and dual power supply automatic switching circuit of the invention.
Wherein, the mains supply access end: vin_main; the standby power supply access end: VIN_BACK; the circuit output end: VOUT; first PMOS tube: q1; and a second PMOS tube: q2; third PMOS tube: q3; fourth PMOS tube: q4; NMOS tube: q5; diode: d4; first resistance: r23; second resistor: r22; third resistor: r24.
Detailed Description
The present invention will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present invention, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present invention by those skilled in the art.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
Referring to fig. 2, this embodiment discloses a specific implementation of a high-current reverse connection preventing and dual-power automatic switching circuit (hereinafter referred to as a "switching circuit") of an intelligent lock.
The large-current reverse connection preventing and dual-power automatic switching circuit of the intelligent lockset is shown as a reference fig. 2 and comprises a MAINs supply access terminal VIN_MAIN, a standby power supply access terminal VIN_BACK, a circuit module and a circuit output terminal VOUT, wherein the MAINs supply access terminal VIN_MAIN is connected with the MAINs supply, the standby power supply access terminal VIN_BACK is connected with the standby power supply, and the circuit output terminal VOUT supplies power to the intelligent lockset; the circuit module comprises a first PMOS tube Q1, a second PMOS tube Q2, a third PMOS tube Q3, a fourth PMOS tube Q4, an NMOS tube Q5 and a diode D4; the MAINs supply access terminal VIN_MAIN is electrically connected with the D electrode of the first PMOS tube Q1, the G electrode of the first PMOS tube Q1 is grounded, the S electrode of the first PMOS tube Q1 is electrically connected with the S electrode of the second PMOS tube Q2, and the D electrode of the second PMOS tube Q2 is electrically connected with the circuit output terminal VOUT; the standby power supply access terminal VIN_BACK is electrically connected with the D electrode of the third PMOS tube Q3, the G electrode of the third PMOS tube Q3 is grounded, the S electrode of the third PMOS tube Q3 is electrically connected with the S electrode of the fourth PMOS tube Q4, the G electrode of the fourth PMOS tube Q4 is grounded, and the D electrode of the fourth PMOS tube Q4 is electrically connected with the circuit output terminal VOUT; the G electrode of the second PMOS tube Q2 is electrically connected with the D electrode of the NMOS tube Q5, the S electrode of the NMOS tube Q5 is grounded, and the diode D4 and the first resistor R23 are arranged between the S electrode of the first PMOS tube Q1 and the G electrode of the NMOS tube Q5; and a second resistor R22 is arranged between the D pole of the NMOS tube Q5 and the output end VOUT of the circuit.
Specifically, referring to fig. 2, the reverse leakage currents of the first PMOS transistor Q1, the second PMOS transistor Q2, the third PMOS transistor Q3, and the fourth PMOS transistor Q4 are less than 1 μa, so that the isolation effect is better and safer. In the prior art, if the circuit response current of the diode in fig. 1 reaches 200 μa, when the standby power supply is connected for a long time, the standby battery can be damaged by over-charging and leakage, and even fire explosion occurs; in addition, the internal resistance of the first PMOS tube Q1, the second PMOS tube Q2, the third PMOS tube Q3 and the fourth PMOS tube Q4 is smaller than 30mΩ, the generated heat is extremely small, and the current of 10A only generates 0.3W of heat.
Referring to fig. 2, the first PMOS transistor Q1 and the third PMOS transistor Q3 are protected by polarity reverse connection prevention, when the polarity of the power supply is reversed, the corresponding power supply of the PMOS transistor is not turned on, for example, when the mains supply is reversed, the first PMOS transistor Q1 is not turned on, and when the standby power supply is reversed, the third PMOS transistor Q3 is not turned on; the switching circuit of the commercial power and the standby power is formed by the second PMOS tube Q2, the NMOS tube Q5 and the fourth PMOS tube Q4, specifically, the G pole of the fourth PMOS tube Q4 is grounded through a third resistor R24, the third resistor R24 is electrically connected to a lead between the diode D4 and the first resistor R23, the resistance of the first resistor R23 is 10k omega, the resistance of the second resistor R22 is 510k omega, and the resistance of the third resistor R24 is 1M omega.
Referring to fig. 2, the second PMOS transistor Q2, the NMOS transistor Q5, and the fourth PMOS transistor Q4 form a switching circuit of the MAINs supply and the standby power supply, and meanwhile, the mutual isolation of the MAINs supply and the standby power supply can be also realized, specifically, when only the MAINs supply access terminal vin_main is turned on, both the diode D4 and the first resistor R23 output a high level and turn on the NMOS transistor Q5, so that the G electrode of the second PMOS transistor Q2 is grounded, the second PMOS transistor Q2 is turned on, so that the MAINs supply access terminal vin_main is turned on with the circuit output terminal VOUT, and meanwhile, the G electrode of the fourth PMOS transistor Q4 is turned off with a very high level, so that the standby source is isolated; when only the standby power supply access terminal vin_back is turned on, the third resistor R24 is grounded, the G of the fourth PMOS transistor Q4 is extremely low, the fourth PMOS transistor Q4 is turned on, so that the standby power supply access terminal vin_back is turned on with the circuit output terminal VOUT, meanwhile, the G of the NMOS transistor Q5 is extremely 0, the NMOS transistor Q5 is turned off, the G of the second PMOS transistor Q2 is extremely high, and the second PMOS transistor Q2 is turned off, thereby isolating the utility power; when the MAINs supply access terminal vin_main and the standby power supply access terminal vin_back are both turned on, the diode D4 and the first resistor R23 both output a high level and make the NMOS transistor Q5 turned on, so that the G electrode of the second PMOS transistor Q2 is grounded, the second PMOS transistor Q2 is turned on, so that the MAINs supply access terminal vin_main is turned on with the circuit output terminal VOUT, meanwhile, the G electrode of the fourth PMOS transistor Q4 is extremely high level, the fourth PMOS transistor Q4 is turned off, so that the standby power supply is isolated when the MAINs supply and the standby power supply exist at the same time, only the standby power supply exists at the moment, the third resistor R24 is grounded, the G electrode of the fourth PMOS transistor Q4 is extremely low level, and the standby power supply access terminal vin_back is turned on with the circuit output terminal VOUT, that is, when the MAINs supply access terminal vin_main is turned off, the standby power supply is continuously turned on at the standby power supply access terminal vin_back, and the standby power supply is continuously enabled at the standby power supply terminal VOUT 0.back-up, and the standby power supply is continuously enabled at the standby power supply access terminal VOUT 1.
Under the condition that the commercial power and the standby power exist simultaneously, the electric quantity of the standby power is always in a full state, the standby power adopts a rechargeable battery, a charging circuit is arranged between the commercial power and the standby power, and the electric quantity of the standby power is ensured to be sufficient through the charging circuit.
With the increasing awareness of safety, when an intelligent lock is installed on a road door or a garage door, such as a garage door, electric vehicles are increasingly used, such as electric vehicles in a closed space, and if the electric vehicles generate smoke or spontaneous combustion accidents, owners of the electric vehicles cannot know the electric vehicles. For knowing smoke, spontaneous combustion accident or other leakage accidents that take place near intelligent tool to lock as early as possible, intelligent tool to lock still is provided with smog sensing unit and/or gas sensing unit, and smog sensing unit is used for responding to near intelligent tool to lock smog that burns and arouses, and gas sensing unit then is used for responding to near intelligent tool to lock inflammable or poisonous gases such as coal gas, natural gas, provides timely early warning function.
Claims (10)
1. The high-current reverse connection preventing and dual-power automatic switching circuit of the intelligent lockset is characterized by comprising a mains supply access end, a standby power supply access end, a circuit module and a circuit output end;
the circuit output end supplies power to the intelligent lockset;
the circuit module comprises a first PMOS tube, a second PMOS tube, a third PMOS tube, a fourth PMOS tube, an NMOS tube and a diode;
the commercial power access end is electrically connected with the D electrode of the first PMOS tube, the G electrode of the first PMOS tube is grounded, the S electrode of the first PMOS tube is electrically connected with the S electrode of the second PMOS tube, and the D electrode of the second PMOS tube is electrically connected with the circuit output end;
the standby power supply access end is electrically connected with the D electrode of a third PMOS tube, the G electrode of the third PMOS tube is grounded, the S electrode of the third PMOS tube is electrically connected with the S electrode of the fourth PMOS tube, the G electrode of the fourth PMOS tube is grounded, and the D electrode of the fourth PMOS tube is electrically connected with the circuit output end;
the G electrode of the second PMOS tube is electrically connected with the D electrode of the NMOS tube, the S electrode of the NMOS tube is grounded, and the diode and the first resistor are arranged between the S electrode of the first PMOS tube and the G electrode of the NMOS tube;
and a second resistor is arranged between the D pole of the NMOS tube and the output end of the circuit.
2. The heavy-current reverse connection preventing and dual-power automatic switching circuit of the intelligent lockset as claimed in claim 1, wherein the G pole of the fourth PMOS tube is grounded through a third resistor, and the third resistor is electrically connected to a wire between the diode and the first resistor.
3. The heavy-current reverse connection preventing and dual-power automatic switching circuit of claim 2, wherein the first resistor has a resistance of 10kΩ, the second resistor has a resistance of 510kΩ, and the third resistor has a resistance of 1mΩ.
4. The high-current reverse connection preventing and dual-power automatic switching circuit of an intelligent lockset according to any one of claims 1 to 3, wherein,
when only the mains supply access terminal is connected, the diode and the first resistor both output high level and conduct the NMOS tube, so that the G electrode of the second PMOS tube is grounded, the second PMOS tube is conducted, and the mains supply access terminal is conducted with the circuit output terminal; meanwhile, the G of the fourth PMOS tube is extremely high level, and the fourth PMOS tube is cut off.
5. The high-current reverse connection preventing and dual-power automatic switching circuit for intelligent lockset according to claim 2 or 3, wherein,
when only the standby power supply access end is connected, the third resistor is grounded, the G of the fourth PMOS tube is extremely low level, and the fourth PMOS tube is conducted, so that the standby power supply access end is conducted with the circuit output end; meanwhile, the G of the NMOS tube is 0, the NMOS tube is cut off, the G of the second PMOS tube is high, and the second PMOS tube is cut off.
6. The heavy-current reverse connection preventing and dual-power automatic switching circuit of an intelligent lock according to any one of claims 1 to 3, wherein when both the mains supply access terminal and the standby power supply access terminal are connected, both the diode and the first resistor output a high level and conduct the NMOS tube, thereby grounding the G electrode of the second PMOS tube, and conducting the second PMOS tube, so that the mains supply access terminal is conducted with the circuit output terminal; meanwhile, the G of the fourth PMOS tube is extremely high level, and the fourth PMOS tube is cut off.
7. The heavy-current reverse connection prevention and dual-power automatic switching circuit of an intelligent lockset according to claim 6, wherein when the mains supply access terminal is powered off, only the standby power supply access terminal is turned on.
8. The high-current reverse connection preventing and dual-power automatic switching circuit of an intelligent lockset according to any one of claims 1 to 3, wherein the second PMOS tube, the NMOS tube and the fourth PMOS tube form a switching circuit of a commercial power source and a standby power source.
9. The heavy-current reverse connection prevention and dual-power automatic switching circuit of an intelligent lockset according to claim 8, wherein a charging circuit is arranged between the commercial power and the standby power.
10. The heavy-current reverse connection prevention and dual-power automatic switching circuit of an intelligent lock according to claim 9, wherein the intelligent lock is installed on a passage door or a garage door, and the intelligent lock is further provided with a smoke sensing unit and/or a gas sensing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311324686.5A CN117081029B (en) | 2023-10-13 | 2023-10-13 | Heavy-current reverse connection preventing and dual-power automatic switching circuit of intelligent lockset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311324686.5A CN117081029B (en) | 2023-10-13 | 2023-10-13 | Heavy-current reverse connection preventing and dual-power automatic switching circuit of intelligent lockset |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117081029A true CN117081029A (en) | 2023-11-17 |
| CN117081029B CN117081029B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311324686.5A Active CN117081029B (en) | 2023-10-13 | 2023-10-13 | Heavy-current reverse connection preventing and dual-power automatic switching circuit of intelligent lockset |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208190254U (en) * | 2018-05-30 | 2018-12-04 | 广州视源电子科技股份有限公司 | Power supply reverse connection prevention circuit and electronic equipment |
| CN208539653U (en) * | 2018-07-23 | 2019-02-22 | 深圳文华兄弟科技有限公司 | A kind of intelligent video analysis instrument |
| CN211405587U (en) * | 2019-12-31 | 2020-09-01 | 深圳市创业正强科技有限公司 | Automatic switching circuit for lithium battery power supply |
| CN112003363A (en) * | 2020-08-03 | 2020-11-27 | 哈尔滨新中新电子股份有限公司 | Embedded power system management circuit |
-
2023
- 2023-10-13 CN CN202311324686.5A patent/CN117081029B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208190254U (en) * | 2018-05-30 | 2018-12-04 | 广州视源电子科技股份有限公司 | Power supply reverse connection prevention circuit and electronic equipment |
| CN208539653U (en) * | 2018-07-23 | 2019-02-22 | 深圳文华兄弟科技有限公司 | A kind of intelligent video analysis instrument |
| CN211405587U (en) * | 2019-12-31 | 2020-09-01 | 深圳市创业正强科技有限公司 | Automatic switching circuit for lithium battery power supply |
| CN112003363A (en) * | 2020-08-03 | 2020-11-27 | 哈尔滨新中新电子股份有限公司 | Embedded power system management circuit |
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| Publication number | Publication date |
|---|---|
| CN117081029B (en) | 2024-04-26 |
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