CN209435112U - ON-OFF control circuit and electronic lock - Google Patents
ON-OFF control circuit and electronic lock Download PDFInfo
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- CN209435112U CN209435112U CN201920196356.5U CN201920196356U CN209435112U CN 209435112 U CN209435112 U CN 209435112U CN 201920196356 U CN201920196356 U CN 201920196356U CN 209435112 U CN209435112 U CN 209435112U
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Abstract
A kind of ON-OFF control circuit, it is connect with power supply and equipment, it include switch module and electromagnetic interference induction module, ON-OFF control circuit is configured as controlling the switch module and be configured as exporting electromagnetic interference induction module of the level to the control terminal of the switch module to disconnect the switch module when sensing electromagnetic interference that the power supply is the access that the equipment is powered by being added, realization disconnects switch module when by electromagnetic interference, power supply is set to stop powering to equipment, the case where being malfunctioned due to electromagnetic interference so as to avoid equipment and cause serious consequence, it solves the problems, such as to be easy to be malfunctioned by electromagnetic interference present in traditional technical solution to cause serious consequence.
Description
Technical field
The utility model belongs to control technology field more particularly to a kind of ON-OFF control circuit and electronic lock.
Background technique
Currently, traditional electronic equipment often malfunctions due to by electromagnetic interference, thus cause it is serious after
Fruit, such as: electronic lock is easy to be caused to open by mistake lock by electromagnetic interference.It under normal circumstances, can be in the circuit of electronic equipment
In add EMI FILTER, but this method typically just reduces the interference of the electromagnetic radiation in environment as far as possible, can not
The guarantee electronic equipment of safety is not influenced completely by electromagnetic interference, such as a large amount of electromagnetic interferences are added by deliberate in electronic lock
To achieve the purpose that in the case that no password the case where and when can unlock, even if having added EMI Filtering in electronic lock
Device can not also avoid not malfunctioning completely.
Therefore, exist in traditional technical solution and be easy to be malfunctioned by electromagnetic interference that serious consequence is caused to be asked
Topic.
Utility model content
In view of this, the utility model embodiment provides a kind of ON-OFF control circuit and electronic lock, it is intended to solve to pass
It is easy to be malfunctioned the problem of causing serious consequence by electromagnetic interference present in the technical solution of system.
The first aspect of the utility model embodiment provides a kind of ON-OFF control circuit, connect with power supply and equipment, institute
Stating ON-OFF control circuit includes: switch module, the external power supply of the input terminal of the switch module, the switch module it is defeated
The external equipment of outlet, the switch module are configured as controlling the access that the power supply is equipment power supply；And electricity
Magnetic disturbance induction module, the external power supply of the power end of the electromagnetic interference induction module, the electromagnetic interference induction module
Output end connect with the control terminal of the switch module, the electromagnetic interference induction module is configured as when sensing that electromagnetism is dry
A level is exported when disturbing to the control terminal of the switch module to disconnect the switch module.
In one embodiment, the electromagnetic interference induction module includes Hall switch, the power end of the Hall switch
For the power end of the electromagnetic interference induction module, the output end of the Hall switch is the defeated of the electromagnetic interference induction module
Outlet, the ground terminal ground connection of the Hall switch.
In one embodiment, the electromagnetic interference induction module further include first resistor, second resistance, 3rd resistor,
First capacitor and the second capacitor, the first end of the first resistor are connected to the power supply, the second end of the first resistor, institute
The first end of the first end and the first capacitor of stating second resistance is connected to the power end of the Hall switch altogether, and described second
The second end of resistance is grounded, and the second end ground connection of the first capacitor, the first end of second capacitor is connected to the Hall and opens
The output end of pass, the second end of second capacitor and the first end of the 3rd resistor are the electromagnetic interference induction module
Output end, the second end ground connection of the 3rd resistor.
In one embodiment, the switch control module includes: switch unit, the input terminal of the switch unit and institute
Power supply connection is stated, the output end of the switch unit is connect with the equipment, and the switch unit is that the power supply is set with described
Standby supply access；And control unit, the output end of the input terminal of described control unit and the electromagnetic interference induction module
Connection, the output end of described control unit are connect with the control terminal of the switch unit, and described control unit is configured as institute
Stating level transitions is the on-off for turning off level signal and controlling the switch unit to the switch unit.
In one embodiment, described control unit includes the first transistor, second transistor, the 4th resistance, the 5th electricity
Resistance and the 6th resistance, the first end of the 4th resistance are connect with the output end of the electromagnetic interference induction module, and described the
First end of the second end of four resistance and the 5th resistance is connected to the base stage of the first transistor, and the of the 5th resistance
Two ends and the emitter of the first transistor are grounded altogether, and the collector of the first transistor is connected to the of the 6th resistance
The first end of the base stage at two ends and the second transistor, the 6th resistance is connect with the power supply, the second transistor
Collector be connected to the control terminal of the switch unit, the emitter ground connection of the second transistor.
In one embodiment, the switch unit includes first switch tube and the 7th resistance, the first switch tube
The first end of input terminal and the 7th resistance is connected in the input terminal of the switch unit, the output end of the first switch tube altogether
For the output end of the switch unit, the second end of the control terminal of the first switch tube and the 7th resistance is connected in described altogether
The control terminal of switch unit.
In one embodiment, the ON-OFF control circuit further includes rectification filtering module, the rectification filtering module string
It is coupled between the electromagnetic interference induction module and the switch module, the first end of the rectification filtering module and the electromagnetism
The output end connection of induction module is interfered, the second end of the rectification filtering module is connect with the control terminal of the switch module.
In one embodiment, the rectification filtering module includes first diode, the second diode and third capacitor,
The anode of the first diode and the anode of second diode are connected in the first end of the rectification filtering module altogether, described
The first end of the cathode of first diode and the third capacitor is connected in the second end of the rectification filtering module altogether, and described second
The cathode of diode is grounded, the second end ground connection of the third capacitor.
The second aspect of the utility model embodiment provides a kind of electronic lock, including above-mentioned ON-OFF control circuit.
In one embodiment, the electronic lock further includes numeric keypad, and the electromagnetic interference induction module is set to described
On region where numeric keypad.
Above-mentioned ON-OFF control circuit is configured as controlling the access that the power supply is equipment power supply by being added
Switch module and being configured as exported when sensing electromagnetic interference a level to the switch module control terminal to disconnect
The electromagnetic interference induction module of the switch module, realization disconnect switch module when by electromagnetic interference, make power supply stop to
Equipment power supply, the case where being malfunctioned due to electromagnetic interference so as to avoid equipment and cause serious consequence.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the circuit diagram for the ON-OFF control circuit that an embodiment of the present invention provides；
Fig. 2 is the exemplary circuit schematic diagram of electromagnetic interference induction module in ON-OFF control circuit shown in FIG. 1；
Fig. 3 is the exemplary circuit schematic diagram of electromagnetic interference induction module in ON-OFF control circuit shown in FIG. 1；
Fig. 4 is the exemplary circuit schematic diagram of switch module in ON-OFF control circuit shown in FIG. 1；
Fig. 5 is the circuit diagram for the ON-OFF control circuit that an embodiment of the present invention provides；
Fig. 6 is the exemplary circuit schematic diagram of rectification filtering module in ON-OFF control circuit shown in fig. 5；
Fig. 7 is the physical circuit figure for the ON-OFF control circuit that an embodiment of the present invention provides.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1, the circuit diagram for the ON-OFF control circuit that the utility model first embodiment provides, for the ease of
Illustrate, only the parts related to this embodiment are shown, and details are as follows:
ON-OFF control circuit is connect with power supply 410 and equipment 420, it should be appreciated that power supply 410 is to power to equipment 420
, power supply 410 can be that perhaps the equipment such as system power supply 420 can be a certain mould in single equipment or equipment to external power
Block.
ON-OFF control circuit includes: switch module 200 and electromagnetic interference induction module 100, the input of switch module 200
Hold external power supply 410, the output end external equipment 420 of switch module 200, outside 410 end of power supply of electromagnetic interference induction module 100
Power supply 410 is connect, the output end of electromagnetic interference induction module 100 is connect with the control terminal of switch module 200.200 quilt of switch module
Being configured to control power supply 410 is the access that equipment 420 is powered；Electromagnetic interference induction module 100, which is configured as working as, senses electromagnetism
A level is exported when interference to the control terminal of switch module 200 to disconnect switch module 200.
ON-OFF control circuit in the present embodiment is configured as control power supply 410 by being added as the logical of the power supply of equipment 420
The switch module 200 on road and being configured as exports a level when sensing electromagnetic interference to the control terminal of switch module 200
To disconnect the electromagnetic interference induction module 100 of switch module 200, realizes and disconnect switch module 200 when by electromagnetic interference, make
Power supply 410 stops powering to equipment 420, malfunctions due to electromagnetic interference so as to avoid equipment 420 and causes serious consequence
Situation.
In one embodiment, switch module 200 can be made of controllable switch and its control circuit, electromagnetic interference sense
Answer module 100 that there can be the component for having induction field to constitute, such as Hall switch.
It should be understood that power supply 410 can be with electronic lock when the ON-OFF control circuit in the present embodiment is applied in electronic lock
Power supply 410, equipment 420 are electronic lock, and under normal circumstances, switch module 200 is closed state, and power supply 410 is normal
Electron lock power supply, when electronic lock receives Tesla coil electromagnetic interference, the output of electromagnetic interference induction module 100 one
A level signal is given to the control terminal of switch module 200, so that it is disconnected the power supply circuit between power supply 410 and electronic lock, so that
Electronic lock stops working because of power-off, avoids opening by mistake lock due to by Tesla coil electromagnetic interference.
It should be understood that the ON-OFF control circuit in the present embodiment also can be applied to other equipment that need to be powered by power supply 410
In 420.
Referring to Fig. 2, in one embodiment, electromagnetic interference induction module 100 includes Hall switch U1, Hall switch U1
410 end of power supply be electromagnetic interference induction module 100 410 end of power supply, the output end of Hall switch U1 is that electromagnetic interference incudes
The output end of module 100, the ground terminal ground connection of Hall switch U1.
Referring to Fig. 3, in one embodiment, electromagnetic interference induction module 100 further includes first resistor R1, second resistance
R2,3rd resistor R3, first capacitor C1 and the second capacitor C2, first resistor R1 the first end be connected to power supply 410, first resistor
The first end of the second end of R1, the first end of second resistance R2 and first capacitor C1 is connected to the power supply 410 of Hall switch U1 altogether
End, the second end ground connection of second resistance R2, the second end ground connection of first capacitor C1, the first end of the second capacitor C2 is connected to Hall and opens
The output end of U1 is closed, the second end of the second capacitor C2 and the first end of 3rd resistor R3 are the defeated of electromagnetic interference induction module 100
Outlet, the second end ground connection of 3rd resistor R3.
Referring to Fig. 4, in one embodiment, switch control module includes: switch unit 220 and control unit 210,
The output end of switch unit 220 is connect with equipment 420, and switch unit 220 is the supply access of power supply 410 and equipment 420, switch
Unit 220 can be made of switching tube or switch chip, such as metal-oxide-semiconductor, IGBT thyristor etc.；Control unit 210 is configured
For by level transitions be turn off level signal to switch unit 220 thus control switch unit 220 on-off, control unit 210
It can be single by triode, NOT gate etc. or be composed.
The input terminal of switch unit 220 is connect with power supply 410, and the input terminal and electromagnetic interference of control unit 210 incude mould
The output end of block 100 connects, and the output end of control unit 210 is connect with the control terminal of switch unit 220.
It should be understood that control unit 210 and the type selecting of the component of switch unit 220 should cooperate, such as switch unit 220
It is made of PMOS tube, control unit 210 can be made of two NPN type triodes；If switch unit 220 is made of NMOS tube,
Control unit 210 can be made of two PNP type triodes.
Referring to Fig. 4, in one embodiment, control unit 210 includes the first transistor Q1, second transistor Q2, the
Four resistance R4, the 5th resistance R5 and the 6th resistance R6, the first end of the 4th resistance R4 are defeated with electromagnetic interference induction module 100
Outlet connection, the second end of the 4th resistance R4 and the first end of the 5th resistance R5 are connected to the base stage of the first transistor Q1, the 5th electricity
The emitter of the second end and the first transistor Q1 that hinder R5 is grounded altogether, and the collector of the first transistor Q1 is connected to the 6th resistance R6's
The first end of the base stage of second end and second transistor Q2, the 6th resistance R6 is connect with power supply 410, the current collection of second transistor Q2
Pole is connected to the control terminal of switch unit 220, the emitter ground connection of second transistor Q2.
Referring to Fig. 4, in one embodiment, switch unit 220 includes first switch tube Q3 and the 7th resistance R7, first
The first end of the input terminal of switching tube Q3 and the 7th resistance R7 are connected in the input terminal of switch unit 220 altogether, first switch tube Q3's
Output end is the output end of switch unit 220, and the control terminal of first switch tube Q3 and the second end of the 7th resistance R7 are connected in out altogether
Close the control terminal of unit 220.
Referring to Fig. 5, further including rectification filtering module in one embodiment, rectification filtering module can be whole by having
The component of stream filtering is constituted, such as rectifier diode, filter capacitor etc., and rectification filtering module is series at electromagnetic interference induction mould
Between block 100 and switch module 200, the first end of rectification filtering module is connect with the output end of electromagnetic interference induction module 100,
The second end of rectification filtering module is connect with the control terminal of switch module 200.
Referring to Fig. 6, in one embodiment, rectification filtering module include first diode D1, the second diode D2 with
And the anode of third capacitor C3, first diode D1 and the anode of the second diode D2 are connected in the first of rectification filtering module altogether
End, the cathode of first diode D1 and the first end of third capacitor C3 are connected in the second end of rectification filtering module, the two or two pole altogether
The cathode of pipe D2 is grounded, the second end ground connection of third capacitor C3.
It should be understood that first diode D1 and the second diode D2 can be rectifier diode, third capacitor C3 can be filter
Wave capacitor.
Referring to Fig. 7, a kind of physical circuit figure of ON-OFF control circuit is provided, the summary switch control by taking Fig. 7 as an example below
The working principle of circuit processed:
Under normal circumstances, the first switch tube Q3 conducting in switch unit 220, power supply 410 give 420 normal power supply of equipment；
When not having electromagnetic interference, the output end of Hall switch U1 exports low level, and rectified filter module is transported to the
The base stage of one transistor Q1, the first transistor Q1 end, at this time the current collection of the first transistor Q1 extremely high level, so that second is brilliant
Body pipe Q2 conducting, the current collection of second transistor Q2 extremely low level, first switch tube Q3 are held at this time, and power supply 410 is set
Standby 420 normal power supplies；
When having electromagnetic interference, the output end of Hall switch U1 exports high level, and rectified filter module is transported to the first crystalline substance
The base stage of body pipe Q1, the first transistor Q1 are connected, at this time the current collection of the first transistor Q1 extremely low level, thus second transistor
Q2 cut-off, the current collection of second transistor Q2 extremely high level, first switch tube Q3 cut-off, power supply 410 stop to equipment 420 at this time
Power supply, equipment 420 stops working because of power-off, to avoid malfunctioning.
The second embodiment of the utility model provides a kind of electronic lock, which is characterized in that including above-mentioned switch control
Circuit.
It should be understood that ON-OFF control circuit can to control electronic lock system power supply electron lock in other modules on
Electricity or power-off.
It in one embodiment, further include numeric keypad, electromagnetic interference induction module 100 is set to the area where numeric keypad
On domain, so that more accurate inductive electromagnetic is interfered.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of ON-OFF control circuit, connect with power supply and equipment, which is characterized in that the ON-OFF control circuit includes:
Switch module, the external power supply of the input terminal of the switch module, the output end of the switch module is external described to be set
Standby, the switch module is configured as controlling the access that the power supply is equipment power supply；And
Electromagnetic interference induction module, the external power supply of the power end of the electromagnetic interference induction module, the electromagnetic interference sense
The output end of module and the control terminal of the switch module is answered to connect, the electromagnetic interference induction module is configured as working as and sense
A level is exported when electromagnetic interference to the control terminal of the switch module to disconnect the switch module.
2. ON-OFF control circuit as described in claim 1, which is characterized in that the electromagnetic interference induction module includes that Hall is opened
It closes, the power end of the Hall switch is the power end of the electromagnetic interference induction module, and the output end of the Hall switch is
The output end of the electromagnetic interference induction module, the ground terminal ground connection of the Hall switch.
3. ON-OFF control circuit as claimed in claim 2, which is characterized in that the electromagnetic interference induction module further includes first
First end of resistance, second resistance, 3rd resistor, first capacitor and the second capacitor, the first resistor is connected to the power supply,
The first end of the second end of the first resistor, the first end of the second resistance and the first capacitor be connected to altogether it is described suddenly
The power end of your switch, the second end ground connection of the second resistance, the second end ground connection of the first capacitor, second capacitor
The first end be connected to the output end of the Hall switch, the second end of second capacitor and the first end of the 3rd resistor are
The output end of the electromagnetic interference induction module, the second end ground connection of the 3rd resistor.
4. ON-OFF control circuit as described in claim 1, which is characterized in that the switch control module includes:
Switch unit, the input terminal of the switch unit are connect with the power supply, and the output end of the switch unit is set with described
Standby connection, the switch unit are the supply access of the power supply and the equipment；And
Control unit, the input terminal of described control unit are connect with the output end of the electromagnetic interference induction module, the control
The output end of unit is connect with the control terminal of the switch unit, and described control unit is configured as the level transitions being pass
Disconnected level signal controls the on-off of the switch unit to the switch unit.
5. ON-OFF control circuit as claimed in claim 4, which is characterized in that described control unit includes the first transistor,
Two-transistor, the 4th resistance, the 5th resistance and the 6th resistance, the first end and the electromagnetic interference of the 4th resistance incude
The output end of module connects, and the second end of the 4th resistance and the first end of the 5th resistance are connected to the first transistor
Base stage, the second end of the 5th resistance and the emitter of the first transistor be grounded altogether, the collection of the first transistor
Electrode is connected to the second end of the 6th resistance and the base stage of the second transistor, the first end of the 6th resistance with it is described
Power supply connection, the collector of the second transistor are connected to the control terminal of the switch unit, the transmitting of the second transistor
Pole ground connection.
6. ON-OFF control circuit as claimed in claim 4, which is characterized in that the switch unit includes first switch tube and
The first end of seven resistance, the input terminal of the first switch tube and the 7th resistance is connected in the input of the switch unit altogether
End, the output end of the first switch tube are the output end of the switch unit, the control terminal of the first switch tube with it is described
The second end of 7th resistance is connected in the control terminal of the switch unit altogether.
7. ON-OFF control circuit as claimed in any one of claims 1 to 6, which is characterized in that it further include rectification filtering module,
The rectification filtering module is series between the electromagnetic interference induction module and the switch module, the rectification filtering module
First end connect with the output end of the electromagnetic interference induction module, the second end of the rectification filtering module and the switch
The control terminal of module connects.
8. ON-OFF control circuit as claimed in claim 7, which is characterized in that the rectification filtering module includes the one or two pole
Pipe, the second diode and third capacitor, the anode of the first diode and the anode of second diode are connected in institute altogether
State the first end of rectification filtering module, the first end of the cathode of the first diode and the third capacitor is connected in described whole altogether
Flow the second end of filter module, the cathode ground connection of second diode, the second end ground connection of the third capacitor.
9. a kind of electronic lock, which is characterized in that including ON-OFF control circuit described in claim 1-8 any one.
10. electronic lock as claimed in claim 9, which is characterized in that it further include numeric keypad, the electromagnetic interference induction module
On the region where the numeric keypad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920196356.5U CN209435112U (en) | 2019-02-14 | 2019-02-14 | ON-OFF control circuit and electronic lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920196356.5U CN209435112U (en) | 2019-02-14 | 2019-02-14 | ON-OFF control circuit and electronic lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209435112U true CN209435112U (en) | 2019-09-24 |
Family
ID=67977958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920196356.5U Active CN209435112U (en) | 2019-02-14 | 2019-02-14 | ON-OFF control circuit and electronic lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209435112U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670967A (en) * | 2019-10-10 | 2020-01-10 | 重庆电子工程职业学院 | Intelligent home security lock based on Internet of things technology |
| CN110905290A (en) * | 2019-10-30 | 2020-03-24 | 深圳市亿联智能有限公司 | Hardware circuit capable of avoiding unlocking of Tesla coil |
| CN112633450A (en) * | 2020-11-23 | 2021-04-09 | 努比亚技术有限公司 | Electronic price tag starting control method and device |
| CN112653111A (en) * | 2020-12-22 | 2021-04-13 | 北京华大智宝电子系统有限公司 | Anti-electromagnetic interference protection device and method |
-
2019
- 2019-02-14 CN CN201920196356.5U patent/CN209435112U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670967A (en) * | 2019-10-10 | 2020-01-10 | 重庆电子工程职业学院 | Intelligent home security lock based on Internet of things technology |
| CN110905290A (en) * | 2019-10-30 | 2020-03-24 | 深圳市亿联智能有限公司 | Hardware circuit capable of avoiding unlocking of Tesla coil |
| CN112633450A (en) * | 2020-11-23 | 2021-04-09 | 努比亚技术有限公司 | Electronic price tag starting control method and device |
| CN112653111A (en) * | 2020-12-22 | 2021-04-13 | 北京华大智宝电子系统有限公司 | Anti-electromagnetic interference protection device and method |
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Address after: No.133, Yishang Avenue, economic and Technological Development Zone, Yichun City, Jiangxi Province Patentee after: Jiangxi Zhixin Intelligent Technology Co., Ltd Address before: Room 406-407, Tsinghua Information Port Research Building, North District of Xili Street High-tech Industrial Park, Nanshan District, Shenzhen City, Guangdong Province, 518000 Patentee before: SHENZHEN FINGERCHIP INTELLIGENT TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20200911 Address after: No.133, Yishang Avenue, Yichun economic and Technological Development Zone, Yichun City, Jiangxi Province Patentee after: Jiangxi finger core intelligent terminal Co., Ltd Address before: No.133, Yishang Avenue, economic and Technological Development Zone, Yichun City, Jiangxi Province Patentee before: Jiangxi Zhixin Intelligent Technology Co., Ltd |
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Effective date of registration: 20210309 Address after: 518000 406-407, 4th floor, Tsinghua Information Port scientific research building, west of South Gate, No. 13, Langshan Road, songpingshan community, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Zhixin Wulian Technology Co.,Ltd. Address before: 336000 No.133, Yishang Avenue, Yichun economic and Technological Development Zone, Yichun City, Jiangxi Province Patentee before: Jiangxi finger core intelligent terminal Co., Ltd |
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