CN215255307U - Apply to hasp motor drive circuit of intelligence lock - Google Patents
Apply to hasp motor drive circuit of intelligence lock Download PDFInfo
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- CN215255307U CN215255307U CN202121221922.7U CN202121221922U CN215255307U CN 215255307 U CN215255307 U CN 215255307U CN 202121221922 U CN202121221922 U CN 202121221922U CN 215255307 U CN215255307 U CN 215255307U
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- optocoupler
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- 238000012544 monitoring process Methods 0.000 claims description 16
- 238000002955 isolation Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 description 13
- 230000003287 optical effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model discloses an apply to hasp motor drive circuit of intelligence lock. Including first opto-coupler, the second opto-coupler, first triode, the second triode, first relay, second relay and motor, the main control chip of respectively through seventh resistance and eighth ohmic connection intelligence lock is equallyd divide to the positive pole of first opto-coupler and second opto-coupler, the collecting electrode of first opto-coupler and second opto-coupler inserts the 5V power through ninth resistance and tenth resistance respectively, the projecting pole of first opto-coupler and second opto-coupler is connected with the base of first triode and second triode respectively, the collecting electrode of first triode and second triode is connected with first relay and second relay respectively. The utility model discloses regard as the isolation with the opto-coupler respectively to two signal input ports, it is different with the voltage that is used for driving motor to avoid main control chip, and the hidden danger that produces, improve circuit safety.
Description
Technical Field
The utility model belongs to the technical field of hasp motor drive technique and specifically relates to an apply to hasp motor drive circuit of intelligence door lock.
Background
As is well known, a door lock is one of the most closely related items to people's daily lives. Along with the continuous progress of science and technology, present lock is not only mechanical lock now, and more is intelligent lock, relies on high-tech system technology, makes to unblank to become intelligent identification back, comes drive gear and finally realizes the flexible removal of hasp through the work of drive hasp motor, consequently, the normal operating that intelligence lock was locked and was unblanked, then directly receives hasp motor drive's influence.
At present, the existing latch motor driving substrate is carried out by a driving circuit, and most of the existing driving circuits are directly connected with a main control chip through a base electrode of a triode or a grid electrode of an MOS (metal oxide semiconductor) tube and receive driving signals, so that the normal work starting of the motor can be finished, but the voltage of the main control chip is 5V, the voltage driven by the motor is 12V, the difference between the two is large, and potential safety hazards are easy to occur if the two are directly connected; meanwhile, in the process of driving the motor, the current threshold in the driving circuit cannot be detected in time, so that the motor is easily damaged, and the overall protection effect is poor.
Disclosure of Invention
To the not enough of existence among the above-mentioned prior art, the utility model aims to provide an apply to hasp motor drive circuit of intelligence lock.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a latch motor driving circuit applied to an intelligent door lock comprises a first optocoupler, a second optocoupler, a first triode, a second triode, a first relay, a second relay and a motor, wherein the anodes of the first optocoupler and the second optocoupler are connected with a main control chip of the intelligent door lock through a seventh resistor and an eighth resistor respectively, the collecting electrodes of the first optocoupler and the second optocoupler are connected with a 5V power supply through a ninth resistor and a tenth resistor respectively, the emitting electrodes of the first optocoupler and the second optocoupler are connected with the base electrodes of the first triode and the second triode respectively, the collecting electrodes of the first triode and the second triode are connected with the first relay and the second relay respectively, the collecting electrodes of the first triode and the second triode are connected with the 5V power supply through a sixth diode and a seventh diode respectively, and the output ends of the first relay and the second relay are connected with the positive end and the negative end of the motor respectively, and the power input ends of the first relay and the second relay are simultaneously connected with a 12V power supply.
Preferably, a current monitoring sensor is arranged between the first relay and the motor, and the output end of the current monitoring sensor is connected to a main control chip of the intelligent door lock.
Preferably, the first relay and the second relay are both 5-pin relays.
Preferably, the first relay is connected with a sixth capacitor and a seventh capacitor at the grounding end and the power input end, and the second relay is connected with an eighth capacitor and a ninth capacitor at the grounding end and the power input end.
Preferably, the current monitoring sensor is an ACS712ELCTR-05B model.
By adopting the scheme, the utility model discloses regard opto-coupler as the isolation respectively to two signal input ports, avoid the main control chip and be used for driving motor's voltage difference, and the hidden danger that produces improves circuit safety; meanwhile, the working current of the motor is detected in real time by the current monitoring sensor, so that the motor is prevented from being overloaded, the current value exceeds a set value, the safety cut-off effect is achieved, the motor is prevented from being damaged, and in addition, the sixth diode and the seventh diode are used as protection diodes and combined with the capacitors connected with the first relay and the second relay, so that the circuit can be protected.
Drawings
Fig. 1 is a schematic diagram of the structural principle of the embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1, the latch motor driving circuit applied to the smart door lock according to the present embodiment includes a first optocoupler U4, a second optocoupler U5, a first transistor Q1, a second transistor Q2, a first relay JDQ1, a second relay JDQ2 and a motor, anodes of the first optocoupler U4 and the second optocoupler U5 are respectively connected to a main control chip of the smart door lock through a seventh resistor R7 and an eighth resistor R8, collectors of the first optocoupler U4 and the second optocoupler U5 are respectively connected to a 5V power supply through a ninth resistor R9 and a tenth resistor R10, emitters of the first optocoupler U4 and the second optocoupler U5 are respectively connected to bases of the first transistor Q1 and the second transistor Q2, collectors of the first transistor Q1 and the second transistor Q2 are respectively connected to a first relay Q1 and a second relay JDQ2, collectors of the first transistor JDQ2 and the second transistor JDQ2 are respectively connected to a sixth diode 2 and a sixth diode 36d 2, the output ends of the first relay JDQ1 and the second relay JDQ2 are respectively connected to the positive end and the negative end of the motor M1, and the power input ends of the first relay JDQ1 and the second relay JDQ2 are simultaneously connected to a 12V power supply.
Further, be provided with current monitoring sensor U6 between first relay JDQ1 and the motor M1, current monitoring sensor U6's output is connected in the main control chip of intelligent lock.
Further, the first relay JDQ1 and the second relay JDQ2 are 5-pin relays.
Further, a sixth capacitor C6 and a seventh capacitor C7 are connected to the first relay JDQ1 at the ground terminal and the power input terminal. The second relay JDQ2 is connected to the ground terminal and the power input terminal by an eighth capacitor C8 and a ninth capacitor C9.
Further, the current monitoring sensor U6 is an ACS712ELCTR-05B model.
The optical coupler isolation is adopted in the embodiment, specifically, a first optical coupler U4 and a second optical coupler U5 are adopted to respectively receive control signals input by a main control chip of the intelligent door lock, when the first optical coupler U4 is switched on and the second optical coupler U5 is switched off, a pin 1 of a first relay JDQ1 is connected with a +12V power supply, a pin 1 of a second relay JDQ2 is grounded, and at the moment, a motor M1 realizes forward rotation and defines to drive a latch to lock the door; when the first optical coupler U4 is cut off and the second optical coupler U5 is switched on, the motor M1 rotates reversely and drives the latch to open the door; when the first optocoupler U4 and the second optocoupler U5 are simultaneously turned off or simultaneously turned on, the motor M1 stops rotating due to the same voltage at the two ends of the motor.
Meanwhile, in order to prevent the motor M1 from being damaged due to overlarge resistance, the current monitoring sensor U6 is adopted in the embodiment, the type of the current monitoring sensor U6 is ACS712ELCTR-05B type, the maximum working current of the current monitoring sensor U is +/-5A, the sensitivity of the current monitoring sensor U is 185mV/A, the current monitoring sensor U has the advantages of high insulation voltage, unidirectional power supply operation, extremely low internal conduction resistance and the like, and an economical and practical precise solution is provided for detection of the intelligent door lock. During specific work, when the load of the motor M1 is increased to a certain degree, and the current value passing through the motor M1 exceeds the preset threshold value, the main control chip of the intelligent door lock receives the information sent by the current monitoring sensor U6 and controls the motor M1 to work continuously, so that the protection effect is achieved. The sixth diode D6 and the seventh diode D7 are protection diodes, and in combination with the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8 and the ninth capacitor C9, can function as a protection circuit.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (5)
1. The utility model provides an apply to hasp motor drive circuit of intelligence lock which characterized in that: comprises a first optocoupler, a second optocoupler, a first triode, a second triode, a first relay, a second relay and a motor, the anodes of the first optocoupler and the second optocoupler are respectively connected with a main control chip of the intelligent door lock through a seventh resistor and an eighth resistor, the collectors of the first optocoupler and the second optocoupler are respectively connected with a 5V power supply through a ninth resistor and a tenth resistor, the emitting electrodes of the first optocoupler and the second optocoupler are respectively connected with the base electrodes of the first triode and the second triode, the collectors of the first triode and the second triode are respectively connected with a first relay and a second relay, the collectors of the first triode and the second triode are connected with a 5V power supply through a sixth diode and a seventh diode respectively, the output ends of the first relay and the second relay are respectively connected with the positive end and the negative end of the motor, and the power input ends of the first relay and the second relay are simultaneously connected with a 12V power supply.
2. A latch motor driving circuit for use in an intelligent door lock as recited in claim 1, wherein: be provided with the current monitoring sensor between first relay and the motor, the output of current monitoring sensor is connected in the main control chip of intelligent lock.
3. A latch motor driving circuit for use in an intelligent door lock as claimed in claim 2, wherein: the first relay and the second relay are both 5-pin relays.
4. A latch motor driving circuit for use in an intelligent door lock as claimed in claim 3, wherein: the first relay is located the earthing terminal and is connected with sixth electric capacity and seventh electric capacity with power input end, the second relay is located the earthing terminal and is connected with eighth electric capacity and ninth electric capacity with power input end.
5. The motor driving circuit of claim 4, wherein the motor driving circuit comprises: the current monitoring sensor is an ACS712ELCTR-05B model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121221922.7U CN215255307U (en) | 2021-06-02 | 2021-06-02 | Apply to hasp motor drive circuit of intelligence lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121221922.7U CN215255307U (en) | 2021-06-02 | 2021-06-02 | Apply to hasp motor drive circuit of intelligence lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215255307U true CN215255307U (en) | 2021-12-21 |
Family
ID=79475886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121221922.7U Active CN215255307U (en) | 2021-06-02 | 2021-06-02 | Apply to hasp motor drive circuit of intelligence lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215255307U (en) |
-
2021
- 2021-06-02 CN CN202121221922.7U patent/CN215255307U/en active Active
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