CN206517326U - DC dynamo steady speed controlling circuit and hay mover - Google Patents
DC dynamo steady speed controlling circuit and hay mover Download PDFInfo
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- CN206517326U CN206517326U CN201621471438.9U CN201621471438U CN206517326U CN 206517326 U CN206517326 U CN 206517326U CN 201621471438 U CN201621471438 U CN 201621471438U CN 206517326 U CN206517326 U CN 206517326U
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Abstract
The utility model discloses DC dynamo steady speed controlling circuit and hay mover.The utility model DC dynamo steady speed controlling circuit, including：Motor speed detection module, motor speed stabilizing control module, single chip control module；Motor speed detection module constantly detects the voltage signal at armature two ends, flows through the current signal of armature, and is input to single chip control module；Single chip control module receives the voltage signal, current signal, draw DC motor speed electromotive force consumption and rotating speed, and be compared with the default electromotive force consumption of single chip control module and rotating speed, armature of direct current motor both end voltage adjustment signal is exported according to comparative result；Motor speed stabilizing control module obtains the voltage at armature of direct current motor two ends adjustment signal regulation and control armature two ends, and then regulates and controls motor speed.The DC dynamo steady speed controlling circuit that the utility model is provided reduces circuit total energy consumption, improves the effective operating efficiency of battery.
Description
Technical field
The utility model is related to electric machines control technology, more particularly to DC dynamo steady speed controlling circuit and hay mover.
Background technology
Motor is divided into alternating current generator and direct current generator in modern industry production, and direct current generator can be adjusted interior in a big way
Speed, therefore direct current generator application is still extensive.
Existing mower motor is generally direct current generator, and direct current generator produces rotation by the interaction in two magnetic field.
Existing hay mover is makes motor speed be stable at setting value, and conventional controls circuit that energy induced field is housed suddenly for motor internal
The Hall element electric current flowed through in that sensor, Hall sensor is closed with the proportional torque of motor speed deviation as speed
Circuit controls are closed, while velocity measuring control device is also served as, but the circuit with Hall sensor can cause the extra of electricity
Loss, reduces effective operating efficiency of instrument.
Therefore prior art could be improved.
Utility model content
Main purpose of the present utility model is offer motor fixed-speed control circuit, it is intended to solve the electricity using Hall sensor
Machine fixed-speed control circuit kwh loss is high, the problem of power supply effective inefficiency.
The utility model provides a kind of DC dynamo steady speed controlling circuit, including：Motor speed detection module, motor are steady
Fast control module, single chip control module；
Described motor speed detection module, motor speed stabilizing control module are connected with single chip control module respectively；
The motor speed detection module includes armature of direct current motor both end voltage detection unit, sample resistance unit, electricity
Detection unit is flowed, the voltage signal at armature two ends is constantly detected, flows through the current signal of armature, and by the voltage
Signal, current signal are input to single chip control module；
The single chip control module receives the voltage signal of motor speed detection module input, current signal, and
Draw DC motor speed electromotive force consumption and rotating speed through single chip control module control program, and by the electromotive force consumption and
Rotating speed presets electromotive force consumption with single chip control module and rotating speed is compared, and armature of direct current motor is exported according to comparative result
Both end voltage adjustment signal；
The motor speed stabilizing control module obtains armature of direct current motor two ends adjustment signal regulation and control armature two ends
Voltage, and then regulate and control motor speed.
Preferably, in the motor speed detection module armature of direct current motor both end voltage detection unit, current detecting
Unit is connected with single chip control module respectively by two AD conversion mouthful.
Preferably, the motor speed stabilizing control module includes regulating and controlling voltage signal output unit, on-off circuit unit；It is described
On-off circuit unit is series at electric motor loop；The regulating and controlling voltage signal output unit exports adjustment signal, driving switch circuit
The voltage at unit regulating armature two ends.
Preferably, the regulating and controlling voltage signal output unit is PWM output units, the PWM output units and single-chip microcomputer
Control module, on-off circuit unit are connected, and export PWM square wave adjustment signals.
Preferably, the on-off circuit unit is managed for N-MOS, and N-MOS pipes receive the PWM square waves of PWM output units output
Adjustment signal, and according to PWM square waves adjustment signal driving switch connector to regulate and control the voltage at armature two ends.
The utility model additionally provides a kind of hay mover, and the DC dynamo steady speed controlling circuit of hay mover is above-mentioned direct current
Motor fixed-speed control circuit.
Preferably, the power supply is one kind in lithium ion battery module, Ni-MH battery module and lead accumulator.
Preferably, in addition to power control module, described power control module one end is connected with power supply, the other end with
Single chip control module is connected.
Preferably, the power control module includes power supply detecting signal unit, supply voltage detection unit, temperature
Detection unit, series voltage stabilizing unit, battery electric quantity indicator unit, negative tempperature coefficient thermistor unit.
The utility model beneficial effect：Eliminated in motor speed-stabilizing circuit of the present utility model, motor speed detection module
Conventional detecting element Hall sensor, can carry out corresponding rotation speed change regulation and control according to the size of load resistance, reduce
Circuit complexity, reduces circuit total energy consumption, improves the effective operating efficiency of battery, extends the service life of battery；Simultaneously
The direct current generator of the compatible all models of speed-stabilizing circuit of the present utility model, manufacture craft is simple, convenient, fast, cost performance is high.
Brief description of the drawings
DC dynamo steady speed controlling circuit module schematic diagram in the embodiment of Fig. 1 the utility model one；
DC dynamo steady speed controlling circuit integral module schematic diagram in the embodiment of Fig. 2 the utility model one；
The DC dynamo steady speed controlling circuit diagram of Hall sensor is omitted in the embodiment of Fig. 3 the utility model one；
The DC dynamo steady speed controlling circuit module schematic diagram of hay mover in the embodiment of Fig. 4 the utility model one.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 1, the DC dynamo steady speed controlling circuit that the embodiment of the utility model one is provided, including：Single-chip microcomputer is controlled
Module 20, motor speed detection module 21, motor speed stabilizing control module 22；
Described motor speed detection module 21, motor speed stabilizing control module 22 respectively with the phase of single chip control module 20
Even；
The motor speed detection module 21 includes armature of direct current motor both end voltage detection unit 2, sample resistance unit
11st, current detecting unit 9, constantly detect the voltage signal at armature two ends, flow through the current signal of armature, and by institute
State voltage signal, current signal and be input to single chip control module 20；
The single chip control module 20 receives the voltage signal of the input of motor speed detection module 21, electric current letter
Number, and the control program through single chip control module 20 draws DC motor speed electromotive force consumption EaAnd rotating speed n, and will be described
Electromotive force consumption EaAnd rotating speed n presets electromotive force consumption E with single chip control module 20a` and rotating speed n` are compared, according to than
Relatively result exports armature of direct current motor both end voltage adjustment signal；
The motor speed stabilizing control module 22 obtains armature of direct current motor two ends adjustment signal regulation and control armature two
The voltage at end, and then regulate and control motor speed.
The highly energy-consuming commonly used in direct current generator is eliminated in motor speed detection module 21 to test the speed part Hall sensor, and
By directly detecting the magnitude of voltage at armature of direct current motor two ends, motor is then measured indirectly according to direct current generator characteristic equation and is turned
Speed.Save using Hall sensor test the speed caused by extra kwh loss, improve effective operating efficiency of motor power.
The utility model embodiment is according to DC motor rotation speed characteristic, its rotating speed electromotive force consumption formula：Ea=CeN Φ,
Wherein, Φ is magnetic flux, CeDirect current generator constant, n is motor speed, EaRotate electronic for dc motor under certain rotating speed
Gesture consumption.With reference to direct-current motor armature both end voltage equation：U=Ea+RaIa, n=E can be obtaineda/CeΦ=U/CeΦ-RaIa/Ce
Φ, i.e. DC motor rotation speed characteristic curve are that a slope is Ra/CeΦ straight line, wherein, U is armature of direct current motor two ends electricity
Pressure, RaEmpty load of motor internal resistance, IaTo flow through the electric current of armature of direct current motor.So armature of direct current motor both end voltage and its rotating speed
There is corresponding interrelational form, motor speed can be measured indirectly by directly detecting the magnitude of voltage at armature of direct current motor two ends.
The utility model embodiment has been laid out the direct current generator speed measuring module for saving Hall sensor, phase according to above-mentioned theory
The data processing mode in single chip control module should be changed so that the utility model embodiment is saving highly energy-consuming hall sensing
On the premise of device, the speed stabilizing control to dc motor is still realized, effective work of DC motor power is greatly improved
Make efficiency, save power resource.
Single chip control module 20 is the processing module of system control command described in the utility model embodiment, is system
Control core.Single chip control module 20 is responsible for receiving the armature of direct current motor two ends electricity of the input of motor speed detection module 21
Press U, flow through armature of direct current motor electric current Ia, and show that motor speed is electronic according to the data processor of single chip control module 20
Gesture consumption EaAnd rotating speed n, 20 couples of default E of single chip control modulea` and rotating speed n` and detection EaAnd rotating speed n is compared, and
Armature of direct current motor both end voltage U adjustment signal is exported to motor speed stabilizing control module 22 according to comparative result.
Further, the armature of direct current motor two ends described in the utility model embodiment in motor speed detection module 21
Voltage detection unit 2, current detecting unit 9 are connected with single chip control module respectively by two AD conversion mouthful.
Single chip control module 20 can only be handled data signal, the result or digital quantity of processing, but in this reality
Apply during a circuit automatically controls, variable to be dealt with is voltage signal, current signal, and voltage signal, current signal will be passed through first
Being converted into digital quantity can be handled by single chip control module.So single chip control module 20 passes through two AD
(Analog to Digital abbreviation AD) conversion mouth respectively with motor speed detection module 21 armature of direct current motor two ends electricity
Press detection unit 2, current detecting unit 9 to be connected, voltage signal, current signal are converted into data signal, and according to two AD
Change the electric current after mouth conversion, voltage signal and carry out information processing, and the information result after processing is exported.
In the utility model embodiment in DC dynamo steady speed controlling circuit integral module, the motor speed stabilizing control module
22 include regulating and controlling voltage signal output unit, on-off circuit unit；The on-off circuit unit is series at electric motor loop；The electricity
Press adjustment signal output unit output adjustment signal, the voltage at driving switch circuit unit regulation and control armature two ends.
DC dynamo steady speed controlling circuit in reference picture 2, the utility model embodiment, the regulating and controlling voltage signal output list
Member is PWM output units 10, and the PWM output units 10 are connected with single chip control module 20, on-off circuit unit, is exported
PWM square wave adjustment signals.
The on-off circuit unit is N-MOS pipes 1, and N-MOS pipes 1 receive the PWM square waves regulation and control of the output of PWM output units 10
Signal, and according to PWM square waves adjustment signal driving switch connector to regulate and control the voltage at armature two ends.
PWM output units 10 export PWM square waves, correspond to required speed with its dutycycle.PWM square wave pulse widths are modulated
(Pulse Width Modulator are referred to as：PWM) it is a kind of conventional mode of speed regulation, the i.e. connection by changing electric moter voltage
With the speed of the time control motor of disconnection.In PWM governing systems, when electrical power, motor speed increase, motor power-off
When, its speed reduces, therefore, changes the time of switching electricity according to certain rule, you can the rotating speed of motor is reached and is kept
One stability range.
It is very big to the interference of motor power during due to direct current generator normal work, it is protection electricity in the utility model embodiment
Electromechanical source normal work, while there is control power supply circuit function from single chip control module 20.So single-chip microcomputer controls mould
The other end of block 20 is connected with power control module 25, controls power supply working condition.
Power control module 25 includes power supply detecting signal unit 5, supply voltage detection unit 6, temperature detection list
Member 7, series voltage stabilizing unit 8, battery electric quantity the indicator unit 9, (Negative of negative tempperature coefficient thermistor unit 10
Temperature CoeffiCient abbreviation NTC).The one end of power control module 25 is connected with power supply 23, the other end and list
Piece machine control module 20 is connected.Power control module 25 is used for the working condition for controlling power supply 23, to protect power supply
23 service life.
Hall sensor is eliminated in DC motor speed test module in reference picture 3, the utility model embodiment, and it is straight
The corresponding relation of direct current generator both end voltage value and tachometer value was connected, motor speed is detected.Save the volume of Hall sensor
Outer power consumption, while simplifying circuit connection complexity.
In existing DC dynamo steady speed controlling circuit, Hall sensor of the inside equipped with energy induced field, Hall sensor
In the Hall element electric current that flows through with the proportional torque of motor speed deviation, as speed closed loop systems, while also making
For velocity measuring control device, but Hall sensor power consumption height causes the excess loss of electric quantity of power supply, reduces the effective of battery
Operating efficiency, and each interface connection of Hall sensor is complicated, and circuit is numerous and diverse with line.
Reference picture 4, the utility model embodiment additionally provides a kind of hay mover, the DC dynamo steady speed controlling electricity of hay mover
Road is above-mentioned DC dynamo steady speed controlling circuit.Save using Hall sensor test the speed caused by extra kwh loss, carry
High effective operating efficiency of electrohydraulic mower electromechanical source.
The power supply for the hay mover that the utility model embodiment is provided is lithium ion battery module.For protection power supply lithium from
There is power supply circuit control function in the service life of sub- battery pack, single chip control module 20, with the phase of single chip control module 20
Even power control module 25 include power supply detecting signal unit 5, supply voltage detection unit 6, temperature detecting unit 7,
Series voltage stabilizing unit 8, battery electric quantity indicator unit 9, NTC10.Power control module 25 is used to control power supply lithium ion battery
The working condition of group, to protect the service life of Li-ion batteries piles.
The power supply for the hay mover that the utility model embodiment is provided can be replaced Ni-MH battery module, lead accumulator etc.
It rechargeable battery module.
Hay mover in the utility model embodiment carries fixed-speed control circuit, can be carried out according to the size of load resistance
Corresponding rotation speed change, reduces the loss of unnecessary electric quantity of power supply, adds the use time of powered mower, improve
Operating efficiency, even more improves the service life of power supply, meets the demand of environmental protection.Hay mover in the utility model embodiment is steady
Speed control circuit eliminates conventional detecting element Hall sensor in motor speed detection module, and directly passes through direct current
The corresponding relation of machine both end voltage value and tachometer value, detection, controlled motor rotating speed.Hay mover circuit complexity is reduced, is reduced
Circuit total energy consumption.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
Equivalent structure or equivalent flow conversion that every utilization the utility model specification and accompanying drawing content are made, or directly or indirectly fortune
Used in other related technical fields, similarly it is included in scope of patent protection of the present utility model.
Claims (9)
1. a kind of DC dynamo steady speed controlling circuit, it is characterised in that including：Motor speed detection module, the control of motor speed stabilizing
Module, single chip control module；
Described motor speed detection module, motor speed stabilizing control module are connected with single chip control module respectively；
The motor speed detection module includes armature of direct current motor both end voltage detection unit, sample resistance unit, electric current inspection
Unit is surveyed, the voltage signal at armature two ends is constantly detected, flows through the current signal of armature, and the voltage is believed
Number, current signal be input to single chip control module；
The single chip control module receives the voltage signal of motor speed detection module input, current signal, and through list
Piece machine control module control program draws DC motor speed electromotive force consumption and rotating speed, and by the electromotive force consumption and rotating speed
Electromotive force consumption is preset with single chip control module and rotating speed is compared, and armature of direct current motor two ends are exported according to comparative result
Regulating and controlling voltage signal；
The motor speed stabilizing control module obtains the electricity at armature of direct current motor two ends adjustment signal regulation and control armature two ends
Pressure, and then regulate and control motor speed.
2. DC dynamo steady speed controlling circuit according to claim 1, it is characterised in that the motor speed detection module
In armature of direct current motor both end voltage detection unit, current detecting unit by two AD conversion mouth respectively with single-chip microcomputer control
Module is connected.
3. DC dynamo steady speed controlling circuit according to claim 1, it is characterised in that the motor speed stabilizing control module
Including regulating and controlling voltage signal output unit, on-off circuit unit；The on-off circuit unit is series at electric motor loop；The voltage
Adjustment signal output unit exports adjustment signal, the voltage at driving switch circuit unit regulation and control armature two ends.
4. DC dynamo steady speed controlling circuit according to claim 3, it is characterised in that the regulating and controlling voltage signal output
Unit is PWM output units, and the PWM output units are connected with single chip control module, on-off circuit unit, exports PWM side
Ripple adjustment signal.
5. DC dynamo steady speed controlling circuit according to claim 4, it is characterised in that the on-off circuit unit is N-
Metal-oxide-semiconductor, N-MOS pipes receive the PWM square wave adjustment signals of PWM output units output, and are opened according to the driving of PWM square waves adjustment signal
Fitting is correlated to regulate and control the voltage at armature two ends.
6. a kind of hay mover, it is characterised in that the DC dynamo steady speed controlling circuit of hay mover is any one of claim 1-5
Described DC dynamo steady speed controlling circuit.
7. hay mover according to claim 6, it is characterised in that the hay mover power supply is lithium ion battery mould
One kind in group, Ni-MH battery module and lead accumulator.
8. hay mover according to claim 6, it is characterised in that also including power control module, the power supply control mould
Block one end is connected with power supply, and the other end is connected with single chip control module.
9. hay mover according to claim 8, it is characterised in that the power control module is examined including power supply signal
Survey unit, supply voltage detection unit, temperature detecting unit, series voltage stabilizing unit, battery electric quantity indicator unit, negative temperature system
Number thermistor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621471438.9U CN206517326U (en) | 2016-12-30 | 2016-12-30 | DC dynamo steady speed controlling circuit and hay mover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621471438.9U CN206517326U (en) | 2016-12-30 | 2016-12-30 | DC dynamo steady speed controlling circuit and hay mover |
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| Publication Number | Publication Date |
|---|---|
| CN206517326U true CN206517326U (en) | 2017-09-22 |
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ID=59863959
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621471438.9U Active CN206517326U (en) | 2016-12-30 | 2016-12-30 | DC dynamo steady speed controlling circuit and hay mover |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602946A (en) * | 2016-12-30 | 2017-04-26 | 欣旺达电子股份有限公司 | Steady speed control circuit, steady speed control method for direct current motor and lawn mower |
| CN108594877A (en) * | 2018-05-28 | 2018-09-28 | 嘉兴端宜科技有限公司 | A kind of direct current coding motor two-way closed loop control module and its fixed-speed control system |
-
2016
- 2016-12-30 CN CN201621471438.9U patent/CN206517326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602946A (en) * | 2016-12-30 | 2017-04-26 | 欣旺达电子股份有限公司 | Steady speed control circuit, steady speed control method for direct current motor and lawn mower |
| CN108594877A (en) * | 2018-05-28 | 2018-09-28 | 嘉兴端宜科技有限公司 | A kind of direct current coding motor two-way closed loop control module and its fixed-speed control system |
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