CN101420199A - Remote control speed regulating device for DC motor - Google Patents
Remote control speed regulating device for DC motor Download PDFInfo
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- CN101420199A CN101420199A CNA2007100473857A CN200710047385A CN101420199A CN 101420199 A CN101420199 A CN 101420199A CN A2007100473857 A CNA2007100473857 A CN A2007100473857A CN 200710047385 A CN200710047385 A CN 200710047385A CN 101420199 A CN101420199 A CN 101420199A
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Abstract
The invention provides a DC motor remote control speed regulator, comprising an infrared emitting circuit and an infrared receiving circuit; the infrared emitting circuit comprises a sawtooth wave generator, a voltage comparator and an infrared emitting tube; the reserve phase input terminal of the voltage comparator is connected with the output terminal of the sawtooth wave generator; the positive phase input terminal of the voltage comparator is connected with a reference voltage which can be changed by adjusting a variable resistance; when the reference voltage is regulated to certain a domain value, the voltage comparator outputs a square wave of 10kHz, the width of the positive pulse of which is widened with the increment of the reference voltage; the square wave is amplified by a triode and then sent out by the infrared emitting tube which conducts the triode and a field effect tube when receives the square wave signal; the DC motor rotates as the field effect tube is conducted and the current forms a circuit; the rotation speed of the DC motor is relative to the positive pulse switch of the emitted square wave; the speed is faster when the positive pulse width is wider, otherwise the speed is slower.
Description
Technical field
The present invention relates to a kind of dc motor drive, specifically relate to the device of the remote-controlled speed governing of a kind of direct current machine.
Background technology
At present, the structure of known dc motor drive all is to adopt the method that links together between speed governing part and the motor section branch, and fair live wire is connected between some occasion speed governing part and motor section are divided, promptly DC motor speed-regulating is carried out straighforward operation, therefore, existing speed regulating method can not satisfy the requirement of carrying out straighforward operation in above-mentioned occasion.
Summary of the invention
The objective of the invention is and to carry out remote-control speed-regulation to direct current machine, can satisfy this requirement that fair live wire is connected between speed governing part and the motor.
For achieving the above object, the technical scheme that its technical problem that the present invention solves adopts is: accept circuit by an infrared transmitter and an infrared ray and form a remote control speed regulating device for DC motor.Contain two operational amplifiers in the infrared transmitter, one of them operational amplifier and four resistance, an electric capacity, a diode constitutes a saw-toothed wave generator, frequency of oscillation is 10Kz, its waveform is by this operational amplifier inverting input output, another operational amplifier is connected into a voltage comparator, its inverting input is connected with operational amplifier inverting input in the saw-toothed wave generator, its normal phase input end respectively with a variable-resistance end, one end of a resistance connects, variable-resistance another termination power, and the other end ground connection of this resistance, regulate the reference voltage that variable-resistance resistance can change voltage comparator, voltage comparator output output zero volt when reference voltage is transferred near zero volt, the square wave of voltage comparator output output 10Kz when reference voltage is transferred to a certain thresholding, the width of the positive pulse of the square wave of output progressively rises along with reference voltage and progressively widens, also contain an infrared emission tube in the infrared transmitter, the triode and a current-limiting resistance that is connected on the triode that can drive the infrared emission tube emission, the positive pole of infrared emission tube is connected with power supply through a current-limiting resistance, the negative pole of infrared emission tube is connected with the collector electrode of triode, when voltage comparator has square wave output, amplify the rear drive infrared emission tube through triode this square-wave signal is sent.Infrared ray accepts to comprise in the circuit infrared ray adopter, two composite amplifiers that triode is formed, two current-limiting resistances, a resistance that is serially connected between transistor emitter and the ground wire, a field effect transistor, and a direct current machine that is serially connected between power supply and the field effect transistor drain electrode.When the infrared ray adopter receives the square-wave signal of infrared emission tube emission, after two triodes amplify, make field effect transistor conducting constantly, end, direct current machine rotates because of field effect transistor conducting electric current forms the loop, velocity of rotation is relevant with the positive pulse width of the square wave that launches, the wide more speed of the positive pulse width of square wave is fast more, otherwise the narrow more speed of the positive pulse width of square wave is slow more.
A kind of remote control speed regulating device for DC motor beneficial effect of the present invention is: can carry out straighforward operation to DC generator speed, satisfy this requirement that some occasion speed governing part is connected with the not fair live wire of motor part.
Description of drawings
Fig. 1 is the circuit structure diagram of infrared part
Fig. 2 is the circuit structure diagram that infrared ray is accepted part
Embodiment
With reference to accompanying drawing, will be described in detail specific embodiments of the present invention
In Fig. 1, the normal phase input end of operational amplifier 5 is connected with an end of resistance 2, resistance 3, resistance 4 respectively, another termination power 1 of resistance 2, the other end ground connection of resistance 3, the other end of resistance 4 is connected with the output of operational amplifier 5, the output of operational amplifier 5 is connected with an end of resistance 6, and the other end of resistance 6 is connected the other end ground connection of electric capacity 7 with the inverting input of operational amplifier 5, the inverting input of operational amplifier 10, an end of electric capacity 7 respectively.The normal phase input end of operational amplifier 10 is connected with an end of variable resistor 8, an end of resistance 9 respectively, the other end of variable resistor 8 and cursor slide 14 thereof connect power supply 1, the other end ground connection of resistance 9, the output of operational amplifier 10 is connected through the base stage of resistance 11 with triode 13, the grounded emitter of triode 13, the collector electrode of triode 13 is connected with the negative pole of infrared emission tube 12, and the positive pole of infrared emission tube 12 connects power supply 1 through resistance 15.
In Fig. 2, the negative pole of infrared ray adopter 17 is connected with power supply 24 through resistance 16, the positive pole of infrared ray adopter 17 is connected with the base stage of triode 18, the collector electrode of triode 18 respectively with the collector electrode of triode 19, power supply 24 connects, the emitter of triode 18 is connected with the base stage of triode 19, the emitter of triode 19 respectively with resistance 20, one end of resistance 22 connects, resistance 20 other end ground connection, the other end of resistance 22 is connected with the grid of field effect transistor 21, the drain electrode of field effect transistor 21 is connected with an end of direct current machine 23, another termination power 24 of direct current machine 23, the source ground of field effect transistor 21.
The principle of a kind of remote control speed regulating device for DC motor of the present invention is: the 10Kz sawtooth waveforms that saw-toothed wave generator produced that is made of operational amplifier 5 and peripheral cell is added in the inverting input of operational amplifier 10, the normal phase input end of operational amplifier 10 is connected to reference voltage, the height of reference voltage can be regulated by variable resistor 8, when voltage is transferred near zero volt, sawtooth waveforms voltage in any moment in one-period is higher than reference voltage, therefore the output of operational amplifier 10 is output as zero volt, the base stage of triode 13 is ended because of no-voltage, infrared emission tube 12 is not launched infrared ray, infrared ray adopter 17 can be accepted because of no signal, triode 18, triode 19, field effect transistor 21 is all ended, and direct current machine 23 stops operating because of no current flows through.When reference voltage is transferred to certain thresholding, sawtooth waveforms voltage in some moment in one-period is lower than reference voltage, the output of operational amplifier 10 has voltage output, the waveform of output is a square wave, and the width of the positive pulse of square wave is the first ripple trailing edge in the sawtooth waveforms and the distance between the second ripple rising edge.This square wave is added on the base stage of triode 13, make triode 13 by the conducting of 10Kz frequency, end, drive infrared emission tube 12 and press 10Kz frequency emission infrared ray, infrared ray adopter 17 receives this signal through triode 18, triode 19 amplifies rear drive field effect transistor 21 and presses the conducting of 10Kz frequency, end, direct current machine 23 rotates because of there being electric current to flow through, the speed of the rotation of direct current machine 23 depends on the width of the positive pulse of square wave, the wide more rotating speed of the width of positive pulse is fast more, otherwise the narrow more speed of positive pulse width is slow more, and promptly direct current machine 23 rotating speeds depend on the duty ratio of square wave.Because the waveform of sawtooth waveforms is up-narrow and down-wide, thereby reference voltage is high more, the first ripple trailing edge and the distance between the second ripple rising edge in the sawtooth waveforms are wide more, the width of the positive pulse of the square wave of the output output of operational amplifier 10 is wide more, so as long as regulate the height that the resistance of variable resistor 8 just can change reference voltage, thereby change the width of the positive pulse of square wave, thereby reach the purpose of the rotating speed of regulating direct current machine 23.
Claims (3)
1, a kind of remote control speed regulating device for DC motor is accepted circuit by an infrared transmitter and an infrared ray and is formed, it is characterized in that: the normal phase input end of the operational amplifier in the infrared transmitter (5) respectively with resistance (2), resistance (3), one end of resistance (4) connects, another termination power (1) of resistance (2), the other end ground connection of resistance (3), the other end of resistance (4) is connected with the output of operational amplifier (5), the output of operational amplifier (5) is connected with an end of resistance (6), the other end of resistance (6) respectively with the inverting input of operational amplifier (5), the inverting input of operational amplifier (10), one end of electric capacity (7) connects, the other end ground connection of electric capacity (7).The normal phase input end of operational amplifier (10) is connected with an end of variable resistor (8), an end of resistance (9) respectively, and the other end of variable resistor (8) and cursor slide (14) thereof connect power supply (1), the other end ground connection of resistance (9).
2, according to the anti-phase input and output sawtooth waveforms of claims 1 described operational amplifier (5), frequency of oscillation is 10Kz.
3, according to the output waveform of claims 1 described operational amplifier (10) be: the square wave of output output 10Kz when reference voltage is transferred to a certain thresholding, the width of the positive pulse of the square wave of output progressively rises along with reference voltage and progressively widens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100473857A CN101420199A (en) | 2007-10-25 | 2007-10-25 | Remote control speed regulating device for DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100473857A CN101420199A (en) | 2007-10-25 | 2007-10-25 | Remote control speed regulating device for DC motor |
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| Publication Number | Publication Date |
|---|---|
| CN101420199A true CN101420199A (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100473857A Pending CN101420199A (en) | 2007-10-25 | 2007-10-25 | Remote control speed regulating device for DC motor |
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| CN (1) | CN101420199A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977002A (en) * | 2010-11-11 | 2011-02-16 | 苏州合欣美电子科技有限公司 | Brush motor control circuit of ecological house |
| CN106772127A (en) * | 2017-03-31 | 2017-05-31 | 珠海恩企电子有限公司 | A kind of LED drive power aging cabinet |
| CN110336512A (en) * | 2019-07-08 | 2019-10-15 | 维沃移动通信有限公司 | A kind of electric machine control system, method and terminal |
| CN111969980A (en) * | 2020-10-26 | 2020-11-20 | 上海芯龙半导体技术股份有限公司南京分公司 | Oscillator circuit and power supply chip |
| CN112165324A (en) * | 2020-10-14 | 2021-01-01 | 中北大学 | Low-jitter ultra-narrow pulse width local oscillator signal generating device and method of sampler |
| CN112436825A (en) * | 2020-10-15 | 2021-03-02 | 中北大学 | High-precision combined delay system and method based on FPGA and delay chip |
-
2007
- 2007-10-25 CN CNA2007100473857A patent/CN101420199A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977002A (en) * | 2010-11-11 | 2011-02-16 | 苏州合欣美电子科技有限公司 | Brush motor control circuit of ecological house |
| CN101977002B (en) * | 2010-11-11 | 2012-09-05 | 苏州合欣美电子科技有限公司 | Brush motor control circuit of ecological house |
| CN106772127A (en) * | 2017-03-31 | 2017-05-31 | 珠海恩企电子有限公司 | A kind of LED drive power aging cabinet |
| CN106772127B (en) * | 2017-03-31 | 2024-05-10 | 珠海恩企电子有限公司 | LED driving power supply aging cabinet |
| CN110336512A (en) * | 2019-07-08 | 2019-10-15 | 维沃移动通信有限公司 | A kind of electric machine control system, method and terminal |
| CN112165324A (en) * | 2020-10-14 | 2021-01-01 | 中北大学 | Low-jitter ultra-narrow pulse width local oscillator signal generating device and method of sampler |
| CN112436825A (en) * | 2020-10-15 | 2021-03-02 | 中北大学 | High-precision combined delay system and method based on FPGA and delay chip |
| CN111969980A (en) * | 2020-10-26 | 2020-11-20 | 上海芯龙半导体技术股份有限公司南京分公司 | Oscillator circuit and power supply chip |
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Open date: 20090429 |