CN209118098U - Electric tool intelligent control circuit with energy conservation and unloaded low noise - Google Patents
Electric tool intelligent control circuit with energy conservation and unloaded low noise Download PDFInfo
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- CN209118098U CN209118098U CN201821776859.1U CN201821776859U CN209118098U CN 209118098 U CN209118098 U CN 209118098U CN 201821776859 U CN201821776859 U CN 201821776859U CN 209118098 U CN209118098 U CN 209118098U
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Abstract
The utility model discloses a kind of electric tool intelligent control circuit with energy conservation and unloaded low noise, including the drive module for driving motor, the control module for providing drive module PWM wave, the signal amplification module of feedback signal for amplifying drive module and for providing the power module of power supply to drive module, control module and drive module, drive module, control module and signal amplification module are electrically connected with power module, drive module and signal amplification module are electrically connected with control module, and drive module is electrically connected with signal amplification module；After the utility model is by using foregoing circuit structure, when electric tool zero load, drive module can be fed back to control module, and control module can control motor and be operated with low-power consumption and the slow-speed of revolution, to achieve the purpose that the energy consumption and noise when reducing electric tool zero load.
Description
Technical field
The utility model relates to electric tool control circuit technical fields, and in particular to one kind has energy conservation and unloaded low noise
The electric tool intelligent control circuit of sound.
Background technique
Current portable lithium electricity electric tool is very universal, user to the quality requirements of lithium electricity electric tool increasingly
Height, low noise and energy-efficient lithium electricity electric tool have become the first choice, and current lithium electricity electric tool exists very greatly in zero load
Noise.Since the power of garden instrument is all bigger, motor speed is relatively high, generally at 3000 revs/min~12000 revs/min,
Fast idle can generate bigger noise, and certain energy content of battery can be lost, while can also damage to switch and motor.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of electric tool intelligence with energy conservation and unloaded low noise
It can control circuit, when electric tool zero load, drive module can be fed back to control module, and control module can control motor
It is operated with low-power consumption and the slow-speed of revolution, to achieve the purpose that the energy consumption and noise when reducing electric tool zero load.
A kind of electric tool intelligent control circuit with energy conservation and unloaded low noise disclosed by the utility model, including with
In the drive module of driving motor, for providing control module, the feedback for amplifying drive module of PWM wave to drive module
The signal amplification module of signal and for drive module, control module and drive module provide power supply power module, driving
Module, control module and signal amplification module are electrically connected with power module, drive module and signal amplification module with control
Module electrical connection, drive module are electrically connected with signal amplification module.
A kind of electric tool intelligent control circuit with energy conservation and unloaded low noise disclosed by the utility model, wherein
Power module includes voltage stabilizing chip U1, diode D1, zener diode D2, resistance R1, R10, capacitor C8, C10, C3, interface P1,
It is electrically connected after the 2 foot series resistance R1 of voltage stabilizing chip U1 with the cathode of diode D1, the anode of diode D1 is electrically connected with interface P1
It connects, one end of resistance R10 is electrically connected with 2 feet of voltage stabilizing chip U1, and the other end ground connection of resistance R10, zener diode D2's is negative
Pole is electrically connected with 2 feet of voltage stabilizing chip U1, the cathode ground connection of zener diode D2, the anode of capacitor C8 and the 2 of voltage stabilizing chip U1
Foot electrical connection, the cathode ground connection of capacitor C8, the 3 feet ground connection of voltage stabilizing chip U1,1 foot of the anode and voltage stabilizing chip U1 of capacitor C10
Electrical connection, the cathode ground connection of capacitor C10, one end of capacitor C3 are electrically connected with 1 foot of voltage stabilizing chip U1, another termination of capacitor C3
Ground, the anode of diode D1 draw power end Bat+, and the cathode of diode D1 draws power end VDD, and zener diode D2's is negative
Power end+15V is drawn in pole, and 1 foot of voltage stabilizing chip U1 draws power end+5V.
A kind of electric tool intelligent control circuit with energy conservation and unloaded low noise disclosed by the utility model, wherein
Control module includes microprocessor U2, resistance R6, R9, R16, R43, R44, capacitor C4, C7, interface P4, P2, microprocessor U2's
1 foot is electrically connected with power end+5V, and one end of resistance R6 is electrically connected with power end+5V, the other end and microprocessor U2 of resistance R6
The electrical connection of 4 feet, one end of capacitor C4 is electrically connected with 4 feet of microprocessor U2, and the other end of capacitor C4 is grounded, microprocessor U2
14 feet ground connection, be electrically connected with 13 feet of microprocessor U2 after interface P4 series resistance R9, after interface P2 series resistance R16 with it is micro-
12 feet of processor U2 are electrically connected, and one end of resistance R43 is electrically connected with power end VDD, the other end and microprocessor of resistance R43
11 feet of U2 are electrically connected, and one end of resistance R44 is electrically connected with 11 feet of microprocessor U2, the other end ground connection of resistance R44, capacitor
C7 is in parallel with resistance R44.
A kind of electric tool intelligent control circuit with energy conservation and unloaded low noise disclosed by the utility model, wherein
Drive module includes resistance R13, R2, R3, R5, R20, R4, R14, R15, R11, R12, R8, R7, triode Q6, Q7, Q4, Q1,
Capacitor C2, C5, C1, field-effect tube Q12, Q11, one end of interface P3, resistance R13 are electrically connected with 6 feet of microprocessor U2, resistance
The other end of R13 is electrically connected with the base stage of triode Q6, the both ends of the resistance R2 base with power end+15V and triode Q6 respectively
Pole electrical connection, the both ends of resistance R3 are electrically connected with the emitter of the base stage of triode Q6 and triode Q6 respectively, triode Q6's
Emitter is grounded, and is electrically connected after the collector series resistance R5 of triode Q6 with the base stage of triode Q7 and the base stage of triode Q4
It connects, the both ends of resistance R20 are electrically connected with the base stage of power end+15V and triode Q7 respectively, one end of resistance R4 and triode Q7
Base stage electrical connection, the other end ground connection of resistance R4, the collector of triode Q7 is electrically connected with power end+15V, triode Q7's
Emitter is electrically connected with the emitter of triode Q4, the grounded collector of triode Q4, the grid and triode of field-effect tube Q11
The emitter of Q4 is electrically connected, and is electrically connected after the drain series capacitor C2 of field-effect tube Q11 with power end Bat+, field-effect tube Q12
Grid be electrically connected with the drain electrode of field-effect tube Q11, the drain electrode of field-effect tube Q12 is electrically connected with power end Bat+, field-effect tube
It is grounded after the source series capacitor C5 of Q12, interface P3 is electrically connected with the source electrode of field-effect tube Q12, the source electrode string of field-effect tube Q11
It is grounded, is electrically connected after the source series resistance R8 of field-effect tube Q11 with 9 feet of microprocessor U2, field-effect tube after connection resistance R7
It is electrically connected after the source series resistance R11 of Q11 with the base stage of triode Q1, is grounded after the base series resistor R12 of triode Q1,
Capacitor C1 is in parallel with resistance R12, the emitter of triode Q1 ground connection, after the collector series resistance R15 of triode Q1 with micro- place
The 7 feet electrical connection of device U2 is managed, the both ends of resistance R14 are electrically connected with 7 feet of power end+5V and microprocessor U2 respectively.
A kind of electric tool intelligent control circuit with energy conservation and unloaded low noise disclosed by the utility model, wherein
Signal amplification module includes operational amplifier U3A, resistance R50, R49, R41, R42, capacitor C10, C18, operational amplifier U3A's
8 feet are electrically connected with power end+5V, and the 4 feet ground connection of operational amplifier U3A, the 2 foot series resistance R49 of operational amplifier U3A are followed by
The one end on ground, capacitor C10 is electrically connected with power end+5V, the other end of capacitor C10 ground connection, the both ends of resistance R50 respectively with power supply
2 feet of end+5V and operational amplifier U3A are electrically connected, and are grounded after the 3 foot series capacitance C18 of operational amplifier U3A, operation amplifier
It is electrically connected after the 3 foot series resistance R41 of device U3A with 9 feet of microprocessor U2, the 1 foot series resistance R42 of operational amplifier U3A
It is electrically connected afterwards with 8 feet of microprocessor U2.
After the utility model is by using foregoing circuit structure, when electric tool zero load, drive module can be to control
Module is fed back, and control module can control motor and be operated with low-power consumption and the slow-speed of revolution, so that reaching reduces electric tool zero load
When energy consumption and noise purpose.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the schematic block circuit diagram of the utility model；
Fig. 2 is the circuit diagram of control module；
Fig. 3 is the circuit diagram of power module；
Fig. 4 is the circuit diagram of drive module；
Fig. 5 is the circuit diagram of signal amplification module.
Specific embodiment
Multiple embodiments that the utility model will be disclosed with schema below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical new
Type.That is, the details in these practices is non-essential in some embodiments of the utility model.In addition, for letter
For the sake of changing schema, some known usual structures and component will be painted it in the drawings in simply illustrative mode.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and non-specifically
The meaning of order or cis-position is censured, it is also non-to limit the utility model, it is retouched just for the sake of difference with same technique term
The component stated or operation are not understood to indicate or imply its relative importance or implicitly indicate indicated technology
The quantity of feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not within the protection scope of the requires of the utility model.
The electric tool intelligent control circuit that there is energy conservation and unloaded low noise of the utility model, including for driving electricity
The drive module 1 of machine, for drive module 1 provide PWM wave control module 2, the feedback signal for amplifying drive module 1
Signal amplification module 3 and for drive module 1, control module 2 and drive module 1 provide power supply power module 4, driving
Module 1, control module 2 and signal amplification module 3 are electrically connected with power module 4, and drive module 1 and signal amplification module 3 are equal
It is electrically connected with control module 2, drive module 1 is electrically connected with signal amplification module 3.
Power module 4 include voltage stabilizing chip U1, diode D1, zener diode D2, resistance R1, R10, capacitor C8, C10,
Be electrically connected after the 2 foot series resistance R1 of C3, interface P1, voltage stabilizing chip U1 with the cathode of diode D1, diode D1 anode with
Interface P1 electrical connection, one end of resistance R10 are electrically connected with 2 feet of voltage stabilizing chip U1, the other end ground connection of resistance R10, pressure stabilizing two
The cathode of pole pipe D2 is electrically connected with 2 feet of voltage stabilizing chip U1, the cathode ground connection of zener diode D2, the anode of capacitor C8 and pressure stabilizing
2 feet of chip U1 are electrically connected, the cathode ground connection of capacitor C8, the 3 feet ground connection of voltage stabilizing chip U1, anode and the pressure stabilizing core of capacitor C10
1 foot of piece U1 is electrically connected, and the cathode ground connection of capacitor C10, one end of capacitor C3 is electrically connected with 1 foot of voltage stabilizing chip U1, capacitor C3
Other end ground connection, the anode of diode D1 draws power end Bat+, and the cathode of diode D1 draws power end VDD, pressure stabilizing two
The cathode of pole pipe D2 draws power end+15V, and 1 foot of voltage stabilizing chip U1 draws power end+5V；In the present invention, pressure stabilizing core
The model 7805 of piece.
Control module 2 includes microprocessor U2, resistance R6, R9, R16, R43, R44, capacitor C4, C7, and interface P4, P2 is micro-
1 foot of processor U2 is electrically connected with power end+5V, and one end of resistance R6 is electrically connected with power end+5V, the other end of resistance R6 with
4 feet of microprocessor U2 are electrically connected, and one end of capacitor C4 is electrically connected with 4 feet of microprocessor U2, the other end ground connection of capacitor C4,
14 feet of microprocessor U2 are grounded, and are electrically connected after interface P4 series resistance R9 with 13 feet of microprocessor U2, interface P2 series electrical
It is electrically connected after resistance R16 with 12 feet of microprocessor U2, one end of resistance R43 is electrically connected with power end VDD, and resistance R43's is another
End is electrically connected with 11 feet of microprocessor U2, and one end of resistance R44 is electrically connected with 11 feet of microprocessor U2, and resistance R44's is another
One end ground connection, capacitor C7 are in parallel with resistance R44；The model SN8P2711B of microprocessor U2 in the present invention.
Drive module 1 include resistance R13, R2, R3, R5, R20, R4, R14, R15, R11, R12, R8, R7, triode Q6,
Q7, Q4, Q1, capacitor C2, C5, C1, field-effect tube Q12, Q11, one end of interface P3, resistance R13 and the 6 feet electricity of microprocessor U2
Connection, the other end of resistance R13 is electrically connected with the base stage of triode Q6, the both ends of resistance R2 respectively with power end+15V and three poles
The base stage of pipe Q6 is electrically connected, and the both ends of resistance R3 are electrically connected with the emitter of the base stage of triode Q6 and triode Q6 respectively, and three
The emitter of pole pipe Q6 is grounded, after the collector series resistance R5 of triode Q6 with the base stage of triode Q7 and the base of triode Q4
Pole electrical connection, the both ends of resistance R20 are electrically connected with the base stage of power end+15V and triode Q7 respectively, one end of resistance R4 and three
The base stage of pole pipe Q7 is electrically connected, and the other end ground connection of resistance R4, the collector of triode Q7 is electrically connected with power end+15V, three poles
The emitter of pipe Q7 is electrically connected with the emitter of triode Q4, the grounded collector of triode Q4, the grid of field-effect tube Q11 with
The emitter of triode Q4 is electrically connected, and is electrically connected after the drain series capacitor C2 of field-effect tube Q11 with power end Bat+, field-effect
The grid of pipe Q12 is electrically connected with the drain electrode of field-effect tube Q11, and the drain electrode of field-effect tube Q12 is electrically connected with power end Bat+, field effect
It should be grounded after the source series capacitor C5 of pipe Q12, interface P3 is electrically connected with the source electrode of field-effect tube Q12, the source of field-effect tube Q11
It is grounded after the series resistance R7 of pole, is electrically connected after the source series resistance R8 of field-effect tube Q11 with 9 feet of microprocessor U2, field effect
It should be electrically connected after the source series resistance R11 of pipe Q11 with the base stage of triode Q1, after the base series resistor R12 of triode Q1
Ground connection, capacitor C1 is in parallel with resistance R12, and the emitter of triode Q1 is grounded, after the collector series resistance R15 of triode Q1 and
7 feet of microprocessor U2 are electrically connected, and the both ends of resistance R14 are electrically connected with 7 feet of power end+5V and microprocessor U2 respectively.
Signal amplification module 3 includes operational amplifier U3A, resistance R50, R49, R41, R42, capacitor C10, C18, and operation is put
8 feet of big device U3A are electrically connected with power end+5V, the 4 feet ground connection of operational amplifier U3A, the 2 foot series electricals of operational amplifier U3A
It is grounded after resistance R49, one end of capacitor C10 is electrically connected with power end+5V, the other end ground connection of capacitor C10, the both ends of resistance R50
It is electrically connected respectively with 2 feet of power end+5V and operational amplifier U3A, the 3 foot series capacitance C18 of operational amplifier U3A are followed by
Ground is electrically connected after the 3 foot series resistance R41 of operational amplifier U3A, 1 foot of operational amplifier U3A with 9 feet of microprocessor U2
It is electrically connected after series resistance R42 with 8 feet of microprocessor U2；The model of operational amplifier U3A in the present invention
LM393。
When the utility model is used, one end of motor is electrically connected with interface P3, the other end of motor is grounded, this reality
6 feet of the microprocessor U2 in control module export PWM wave at work with novel, which controls in drive module
Field-effect tube Q11 and field-effect tube Q12, so, so that motor is slowly increased to high revolving speed from the slow-speed of revolution, so as to keep away
Exempt from the high current for generating moment in motor, and then can be avoided between the brush in motor and the contact of rotor and spark occur, this
Sample one can be avoided the damage of motor, improve the service life of motor；It can be avoided motor internal brush and rotor simultaneously
Contact between make because generating electric arc between brush and the contact of rotor occur contact internal resistance the phenomenon that, so as to reach
Energy-efficient purpose (previous motor drive module in driving motor, brush in motor and can generate between the contact of rotor
Very big electric current so can generate electric arc between brush and the contact of rotor, with the increase of number, will affect brush
Contact internal resistance between the contact of rotor, often, contact internal resistance will become larger, to will increase power consumption, and brush with
The contact of rotor will generate heat, and then will cause the damage of the contact of brush and rotor)；In above-mentioned control process, in electronic work
When tool is unloaded, drive module can be fed back to control module, and control module can control motor and be transported with low-power consumption and the slow-speed of revolution
Turn, to achieve the purpose that the energy consumption and noise when reducing electric tool zero load.
Upper described only the embodiments of the present invention, is not intended to limit the utility model.For this field
For technical staff, various modifications and changes may be made to the present invention.The interior institute of all spirit and principle in the utility model
Any modification, equivalent substitution, improvement and etc. of work should all include within the scope of the claims of the utility model.
Claims (1)
1. a kind of electric tool intelligent control circuit with energy conservation and unloaded low noise, it is characterised in that: including for driving
The drive module (1) of motor is used to provide drive module (1) control module (2) of PWM wave, for amplifying drive module (1)
The signal amplification module (3) of feedback signal and electric for providing drive module (1), control module (2) and drive module (1)
The power module (4) in source, the drive module (1), control module (2) and signal amplification module (3) are electric with power module (4)
Connection, the drive module (1) and signal amplification module (3) be electrically connected with control module (2), the drive module (1) and
Signal amplification module (3) electrical connection, the power module (4) include voltage stabilizing chip U1, diode D1, zener diode D2, electricity
Hinder R1, R10, capacitor C8, C10, C3, the cathode after the 2 foot series resistance R1 of interface P1, the voltage stabilizing chip U1 with diode D1
The anode of electrical connection, the diode D1 is electrically connected with interface P1, one end of the resistance R10 and the 2 feet electricity of voltage stabilizing chip U1
Connection, the other end ground connection of the resistance R10, the cathode of the zener diode D2 are electrically connected with 2 feet of voltage stabilizing chip U1, institute
The cathode ground connection of zener diode D2 is stated, the anode of the capacitor C8 is electrically connected with 2 feet of voltage stabilizing chip U1, the capacitor C8's
Cathode ground connection, the 3 feet ground connection of the voltage stabilizing chip U1, the anode of the capacitor C10 are electrically connected with 1 foot of voltage stabilizing chip U1, institute
The cathode ground connection of capacitor C10 is stated, one end of the capacitor C3 is electrically connected with 1 foot of voltage stabilizing chip U1, and the capacitor C3's is another
End ground connection, the anode of the diode D1 draw power end Bat+, and the cathode of the diode D1 draws power end VDD, described
The cathode of zener diode D2 draws power end+15V, and 1 foot of the voltage stabilizing chip U1 draws power end+5V, the control mould
Block (2) includes microprocessor U2, resistance R6, R9, R16, R43, R44, capacitor C4, C7, interface P4, P2, the microprocessor U2
1 foot be electrically connected with power end+5V, one end of the resistance R6 is electrically connected with power end+5V, the other end of the resistance R6 with
4 feet of microprocessor U2 are electrically connected, and one end of the capacitor C4 is electrically connected with 4 feet of microprocessor U2, and the capacitor C4's is another
14 feet of one end ground connection, the microprocessor U2 are grounded, electric with 13 feet of microprocessor U2 after the interface P4 series resistance R9
It connects, is electrically connected after the interface P2 series resistance R16 with 12 feet of microprocessor U2, one end of the resistance R43 and power supply
Hold VDD electrical connection, the other end of the resistance R43 is electrically connected with 11 feet of microprocessor U2, one end of the resistance R44 and
11 feet of microprocessor U2 are electrically connected, and the other end ground connection of the resistance R44, the capacitor C7 is in parallel with resistance R44, the drive
Dynamic model block (1) includes resistance R13, R2, R3, R5, R20, R4, R14, R15, R11, R12, R8, R7, triode Q6, Q7, Q4, Q1,
Capacitor C2, C5, C1, field-effect tube Q12, Q11, interface P3, one end of the resistance R13 are electrically connected with 6 feet of microprocessor U2,
The other end of the resistance R13 is electrically connected with the base stage of triode Q6, the both ends of the resistance R2 respectively with power end+15V and
The base stage of triode Q6 is electrically connected, and the both ends of the resistance R3 are electric with the emitter of the base stage of triode Q6 and triode Q6 respectively
The emitter of connection, the triode Q6 is grounded, the base after the collector series resistance R5 of the triode Q6 with triode Q7
The electrical connection of the base stage of pole and triode Q4, the both ends of the resistance R20 are electric with the base stage of power end+15V and triode Q7 respectively
Connection, one end of the resistance R4 are electrically connected with the base stage of triode Q7, the other end ground connection of the resistance R4, the triode
The collector of Q7 is electrically connected with power end+15V, and the emitter of the triode Q7 is electrically connected with the emitter of triode Q4, institute
The grounded collector of triode Q4 is stated, the grid of the field-effect tube Q11 is electrically connected with the emitter of triode Q4, the field effect
It should be electrically connected after the drain series capacitor C2 of pipe Q11 with power end Bat+, the grid and field-effect tube of the field-effect tube Q12
The drain electrode of Q11 is electrically connected, and the drain electrode of the field-effect tube Q12 is electrically connected with power end Bat+, the source electrode of the field-effect tube Q12
It is grounded after series capacitance C5, the interface P3 is electrically connected with the source electrode of field-effect tube Q12, the source electrode string of the field-effect tube Q11
It is grounded after connection resistance R7, is electrically connected after the source series resistance R8 of the field-effect tube Q11 with 9 feet of microprocessor U2, it is described
It is electrically connected after the source series resistance R11 of field-effect tube Q11 with the base stage of triode Q1, the base series electricity of the triode Q1
It is grounded after resistance R12, the capacitor C1 is in parallel with resistance R12, the emitter ground connection of the triode Q1, the collection of the triode Q1
Be electrically connected after Electrode Series Resistance R15 with 7 feet of microprocessor U2, the both ends of the resistance R14 respectively with power end+5V and micro-
7 feet of processor U2 are electrically connected, and the signal amplification module (3) includes operational amplifier U3A, resistance R50, R49, R41, R42,
Capacitor C10, C18,8 feet of the operational amplifier U3A are electrically connected with power end+5V, and 4 feet of the operational amplifier U3A connect
Ground is grounded after the 2 foot series resistance R49 of the operational amplifier U3A, and one end and the power end+5V of the capacitor C10 is electrically connected
Connect, the other end of capacitor C10 ground connection, the both ends of the resistance R50 respectively with power end+5V and operational amplifier U3A 2
Foot is electrically connected, and is grounded after the 3 foot series capacitance C18 of the operational amplifier U3A, the 3 foot series electricals of the operational amplifier U3A
Resistance R41 after be electrically connected with 9 feet of microprocessor U2, after the 1 foot series resistance R42 of the operational amplifier U3A with microprocessor
8 feet of U2 are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821776859.1U CN209118098U (en) | 2018-10-31 | 2018-10-31 | Electric tool intelligent control circuit with energy conservation and unloaded low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821776859.1U CN209118098U (en) | 2018-10-31 | 2018-10-31 | Electric tool intelligent control circuit with energy conservation and unloaded low noise |
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| Publication Number | Publication Date |
|---|---|
| CN209118098U true CN209118098U (en) | 2019-07-16 |
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| CN201821776859.1U Active CN209118098U (en) | 2018-10-31 | 2018-10-31 | Electric tool intelligent control circuit with energy conservation and unloaded low noise |
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| CN (1) | CN209118098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110582151A (en) * | 2019-09-10 | 2019-12-17 | 宁波颐栎庭园用品有限公司 | Intelligent inductor |
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2018
- 2018-10-31 CN CN201821776859.1U patent/CN209118098U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110582151A (en) * | 2019-09-10 | 2019-12-17 | 宁波颐栎庭园用品有限公司 | Intelligent inductor |
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