CN202218186U - Commutation control device of direct current motor - Google Patents
Commutation control device of direct current motor Download PDFInfo
- Publication number
- CN202218186U CN202218186U CN2011203511157U CN201120351115U CN202218186U CN 202218186 U CN202218186 U CN 202218186U CN 2011203511157 U CN2011203511157 U CN 2011203511157U CN 201120351115 U CN201120351115 U CN 201120351115U CN 202218186 U CN202218186 U CN 202218186U
- Authority
- CN
- China
- Prior art keywords
- contact
- circuit
- control device
- reversing
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Direct Current Motors (AREA)
Abstract
The utility model discloses a commutation control device of a direct current motor. The device is characterized by comprising a sampling coupling circuit, a shaping circuit and a commutation driving circuit which are connected in sequence, wherein the sampling coupling circuit is connected with a control terminal; and the commutation driving circuit is connected with a motor required to be driven. The direct current motor can be applied for window opening machines and the like, the commutation of the motor is realized by adopting a double-pole relay to switch positive and negative poles of a power supply of the direct current motor, and the circuit structure is simple, safe and reliable.
Description
Technical field
The utility model relates to a kind of direct current machine, especially a kind of control device for reversing that is used for the direct current machine of window opener.
Background technology
The control of DC mode generally is through H bridge-type motor-drive circuit its rotation direction of control and running speed.4 triodes are formed 4 vertical legs of H, and motor is exactly the whippletree among the H.
As shown in Figure 1, H bridge-type motor-drive circuit comprises 4 triodes and 1 motor.Make motor 1 ' running, a pair of triode on the necessary conducting diagonal.The conducting situation right according to different triodes, electric current may be from left to right or are flow through motor 1 ' from right to left, thereby control turning to of motor 1 '.For example, when triode Q1 ' pipe and the conducting of Q4 ' pipe, electric current just passes motor 1 ' from positive source through Q1 ' pipe from left to right, and then gets back to power cathode through Q4 ' pipe, and the electric current of this flow direction clockwise rotates drive motors 1 '; When triode Q2 ' pipe and the conducting of Q3 ' pipe, electric current just passes motor 1 ' from positive source through Q3 ' pipe from right to left, and then gets back to power cathode through Q2 ' pipe, and the electric current of this flow direction rotates counterclockwise drive motors 1 '.
Yet such circuit guarantees that the triode of homonymy can the while conducting be not very important.If triode Q1 ' pipe and the conducting simultaneously of Q2 ' pipe, electric current will pass two triodes from positive pole and directly get back to negative pole so, if do not have extra load then can cause the electric current on the circuit to reach maximum this moment, might burn out triode.Therefore, two triodes conducting simultaneously that extra circuit guarantees homonymy need be set, cause complicated circuit, cost is high, and adopts the triode switching-over can have step-down to a certain degree, thereby causes heating, power loss, influences useful life.
The utility model content
The utility model technical problem to be solved provides a kind of direct current machine control device for reversing, and the switching of adopting two keys relay to carry out the positive and negative level of direct current machine power supply realizes the switching-over of motor, and circuit structure is simple and safe reliable.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of direct current machine control device for reversing; It is characterized in that: comprise the sampling coupling circuit, shaping circuit and the driving commutating circuit that connect successively; Said sampling coupling circuit connects control end, and said driving commutating circuit connects the motor of required driving.
Said sampling coupling circuit comprises optocoupler; An input of said optocoupler is connected to the first live wire end or the second live wire end of the switch of said control end; Another input of said optocoupler is connected to the zero line side of said control end through current-limiting resistance and rectifier diode, and the output of said optocoupler is connected to said shaping circuit.Input voltage be can detect, and forceful electric power and light current isolation carried out.
Said shaping circuit comprises comparator; The output of said comparator is connected to said driving commutating circuit; The output of having eliminated the sampling coupling circuit has the hidden danger of disturbing and might driving when directly driving commutating circuit; Make to be output as level and smooth high-low level, improved the reliability that drives.
Be connected with the 3rd current-limiting resistance between the in-phase input end of said comparator and the output of said optocoupler, to prevent that comparator from being burnt.
The inverting input of said comparator connect high level through first resistance and through second grounding through resistance to regulate sensitivity, even make when input voltage changes greatly, export and control still very stablely, and have the control range of broad.
Said driving commutating circuit comprises triode and the two keys relay that is connected with the motor of required driving, and the output of said shaping circuit is connected to the base stage of said triode through the 3rd resistance, and the collector electrode of said triode is connected with said two keys relay.
Said two keys relay has two groups of contacts; First contact of first group of contact and the 4th contact of second group of contact are connected to the two ends of said motor; Second contact of first group of contact all is connected high level with the 6th contact of second group of contact, and the 3rd contact of first group of contact and the 5th contact of second group of contact be ground connection then.The polarity that is applied to the voltage on the motor is changed in the switching of the contact through two keys relay, realizes the switching-over control of motor thus.
Compared with prior art, the advantage of the utility model is: the sampling coupling circuit is set, makes wherein optionally conducting of optocoupler, exporting height/low level, and play the strong and weak electricity buffer action, make the isolation of late-class circuit and forceful electric power more safe and reliable; Shaping is carried out in output to the sampling coupling circuit, has eliminated interference wherein, and the height/level of output smoothing makes that the driving late-class circuit is more reliable; Drive the switching-over that the switching of adopting two keys relay to carry out direct current machine power supply both positive and negative polarity in the commutating circuit realizes motor, easy to use, and can not cause step-down, be particularly suitable for controlling the little current DC motor of low frequency switching-over; In shaping circuit, be provided for regulating the resistance of sensitivity, even make that output control is still very stable, and has the control range of broad when input voltage changes greatly.
Description of drawings
Fig. 1 is the H bridge-type motor-drive circuit structure chart of prior art;
Fig. 2 is the circuit structure diagram of the control device for reversing of the utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of direct current machine control device for reversing is applied to external rocker switch such as window opener tube shaped electric machine or comprises the controller occasion that switch contact switches, and directly the outside connected switch contact information is converted into the rotating of control direct current machine.
This control device for reversing comprises three parts, sampling coupling circuit 1, shaping circuit 2 and driving commutating circuit 3.Sampling coupling circuit 1 connects control end; Switch S 1 is rocker switch or controller, input 220V electric main, and the first live wire end L1 of switch S 1 or the second live wire end L2 connect the input of optocoupler U1; Zero line side N through rectifier diode D1 and current-limiting resistance to another input that is connected optocoupler U1; Rectifier diode D1 plays the effect of halfwave rectifier, and alternating current is become pulsating direct current, in the present embodiment; Current-limiting resistance has two, and the first current-limiting resistance R1 and the second current-limiting resistance R2 all play metering function.Be connected in parallel to the voltage stabilizing didoe ZD1 and first capacitor C 1 between two live wire ends of the tie point of the first current-limiting resistance R1 and the second current-limiting resistance R2 and switch S 1; Regulate the first current-limiting resistance R1, the second current-limiting resistance R2 and first capacitor C 1 and can adjust the time of discharging and recharging, can adjust the reaction speed that powers on and cut off the power supply; Voltage stabilizing didoe ZD1, first capacitor C 1 and the second current-limiting resistance R2 can eliminate the interference of input simultaneously then for optocoupler U1 provides smoother drive current.The output termination DC power supply high level of optocoupler U1; Like 24V; Another output of optocoupler U1 connects the in-phase input end of the comparator U2 of shaping circuit 2 through pull down resistor R3 ground connection and through the 3rd current-limiting resistance R4; Pull down resistor R3 guarantees that comparator U2 is output as drop-down level at ordinary times, and the 3rd current-limiting resistance R4 then prevents to burn out comparator U2.Sampling coupling circuit 1 is used to detect input voltage, if voltage is arranged then optocoupler U1 conducting, then the A of its output point is exported high level, if no-voltage then not conducting of optocoupler U1, A point output low level.Optocoupler U1 has the strong and weak electricity buffer action concurrently, makes the circuit of back and forceful electric power isolate safer.
Shaping circuit 2 is the level voltage comparator circuit, and the inverting input of comparator U2 connects high level through first resistance R 5, like 24V, and through second resistance R, 6 ground connection.Because the input waveform of optocoupler U1 is pulsed, its output is also pulsed, and first resistance R 5 and second resistance R 6 are set can increase the scope of control through the sensitivity of these two resistance of adjustment with adjustment comparator U2.The positive power source terminal of comparator U2 connects high level, and like 24V, output B is through the base stage of the 3rd resistance R 7 connection triode Q1 of driving commutating circuit 3, and the 3rd resistance R 7 provides suitable drive current for triode Q1.Because A point output voltage has shake and disturbs; The phenomenon that can not drive once in a while or dap might appear in the two keys relay K1 that directly drives commutating circuit 3; Through the signal output part B point of comparator circuit after relatively then is level and smooth high-low level, makes that to drive triode Q1 more reliable.
Drive in the commutating circuit 3; The collector electrode of triode Q1 is connected to an end of the coil of two keys relay K1; The other end of the coil of two keys relay K1 connects high level, like 24V, is connected with the electrode tube D2 of protection two keys relay K1 between the two ends of the coil of two keys relay K1.Two keys relay K1 has two groups of contacts; First contact K11 of first group of contact and the 4th contact K14 of second group of contact are connected to the two ends of motor M; Second contact K12 of first group of contact and the 6th contact K16 of second group of contact all are connected high level, and the 3rd contact K13 of first group of contact and the 5th contact K15 of second group of contact be ground connection then.When switch S 1 was got to the first live wire end L1, not conducting of optocoupler U1 made the late-class circuit dead electricity; Triode Q1 can't conducting; The first contact K11 of two keys relay K1 and the 4th contact K14 get to the second contact K12 and the 5th contact K15 respectively, and negative just down on the voltage of motor M, motor M is just being changeed; When switch S 1 is got to the second live wire end L2, optocoupler U1 conducting, A point output high level; Triode Q1 conducting, two keys relay K1 conducting thus, its first contact K11 and the 4th contact K14 get to the 3rd contact K13 and the 3rd contact K13 respectively; Just bearing down the motor M counter-rotating on the voltage of motor M.Drive commutating circuit 3 and switch, realized the replacing of electric power polarity, realized the switching-over of motor M thus, be particularly suitable for controlling the little current DC motor of low frequency switching-over through the contact of two keys relay K1.
Alternately, also can use two hilted broadsword relays to replace the two keys relay K1 in the present embodiment.
The above is merely the preferred implementation of the utility model; Should be pointed out that for those of ordinary skill in the art, do not breaking away under the principle prerequisite of the utility model; Can also make various deformation and improvement, this also should be regarded as the protection range of the utility model.
Claims (7)
1. direct current machine control device for reversing; It is characterized in that: comprise sampling coupling circuit (1), the shaping circuit (2) that connects successively and drive commutating circuit (3); Said sampling coupling circuit (1) connects control end, and said driving commutating circuit (3) connects the motor (M) of required driving.
2. control device for reversing as claimed in claim 1; It is characterized in that: said sampling coupling circuit (1) comprises optocoupler (U1); An input of said optocoupler (U1) is connected to the first live wire end (L1) or the second live wire end (L2) of the switch (S1) of said control end; Another input of said optocoupler (U1) is connected to the zero line side (N) of said control end through current-limiting resistance and rectifier diode (D1), and the output of said optocoupler (U1) is connected to said shaping circuit (2).
3. control device for reversing as claimed in claim 1 is characterized in that: said shaping circuit (2) comprises comparator (U2), and the output of said comparator (U2) is connected to said driving commutating circuit (3).
4. control device for reversing as claimed in claim 3 is characterized in that: be connected with the 3rd current-limiting resistance (R4) between the output of the in-phase input end of said comparator (U2) and said optocoupler (U1).
5. control device for reversing as claimed in claim 3 is characterized in that: the inverting input of said comparator (U2) connects high level through first resistance (R5) and passes through second resistance (R6) ground connection to regulate sensitivity.
6. like each described control device for reversing among the claim 1-5; It is characterized in that: said driving commutating circuit (3) comprises triode (Q1) and the two keys relay (K1) that is connected with the motor (M) of required driving; The output of said shaping circuit (2) is connected to the base stage of said triode (Q1) through the 3rd resistance (R7), and the collector electrode of said triode (Q1) is connected with said two keys relay (K1).
7. control device for reversing as claimed in claim 6; It is characterized in that: said two keys relay (K1) has two groups of contacts; First contact (K11) of first group of contact and the 4th contact (K14) of second group of contact are connected to the two ends of said motor (M); Second contact (K12) of first group of contact and the 6th contact (K16) of second group of contact all are connected high level, and the 3rd contact (K13) of first group of contact and the 5th contact (K15) of second group of contact be ground connection then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203511157U CN202218186U (en) | 2011-09-14 | 2011-09-14 | Commutation control device of direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203511157U CN202218186U (en) | 2011-09-14 | 2011-09-14 | Commutation control device of direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202218186U true CN202218186U (en) | 2012-05-09 |
Family
ID=46017411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203511157U Expired - Fee Related CN202218186U (en) | 2011-09-14 | 2011-09-14 | Commutation control device of direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202218186U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410342A (en) * | 2014-12-12 | 2015-03-11 | 东莞市精诚电能设备有限公司 | Motor forward and reverse rotation control circuit |
| CN106230337A (en) * | 2016-09-12 | 2016-12-14 | 北京英博电气股份有限公司 | A kind of fan decompression speed device and fan apparatus |
| CN106953599A (en) * | 2017-03-27 | 2017-07-14 | 长沙云涯电子科技有限责任公司 | Circuit occurs for output-stage circuit and amplitude modulation physiotherapy electrical stimulation signal |
| CN107947652A (en) * | 2017-12-01 | 2018-04-20 | 中国兵器装备集团自动化研究所 | Control system and its tri-state control method for brush direct current motor |
-
2011
- 2011-09-14 CN CN2011203511157U patent/CN202218186U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410342A (en) * | 2014-12-12 | 2015-03-11 | 东莞市精诚电能设备有限公司 | Motor forward and reverse rotation control circuit |
| CN106230337A (en) * | 2016-09-12 | 2016-12-14 | 北京英博电气股份有限公司 | A kind of fan decompression speed device and fan apparatus |
| CN106953599A (en) * | 2017-03-27 | 2017-07-14 | 长沙云涯电子科技有限责任公司 | Circuit occurs for output-stage circuit and amplitude modulation physiotherapy electrical stimulation signal |
| CN107947652A (en) * | 2017-12-01 | 2018-04-20 | 中国兵器装备集团自动化研究所 | Control system and its tri-state control method for brush direct current motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202218186U (en) | Commutation control device of direct current motor | |
| CN103904965A (en) | Motor circuit controlling opening and closing of door or window or curtain | |
| CN208849663U (en) | Protection circuit of inverter and servosystem | |
| CN204559452U (en) | Based on the brushless coil excitation DC motor control system of current chopping | |
| CN203251260U (en) | Brushless DC motor power conversion circuit | |
| TW200726059A (en) | Fan system and real-time stopping device thereof | |
| CN203933487U (en) | A kind of commutation control module | |
| CN203261305U (en) | Novel electronic type alternating-current contactor | |
| CN203933461U (en) | A kind of reversing arrangement | |
| CN204615365U (en) | A kind of permagnetic synchronous motor back electromotive force protective device | |
| CN203251261U (en) | Brushless DC motor power conversion circuit | |
| CN204481722U (en) | A kind of switched reluctance machines speed-regulating control device | |
| CN210536354U (en) | Coupling induction power generation energy-saving circuit | |
| CN210536313U (en) | Circuit for recovering back electromotive force for charging | |
| CN203788202U (en) | Motor control circuit for controlling opening and closing of door, window or curtain | |
| CN203289365U (en) | Novel control device for brushless motor | |
| CN202978798U (en) | Electrical appliance in which high-voltage brushless DC motor is driven by three-phase sine wave | |
| CN102739133B (en) | Dual-voltage control switch reluctance motor and dual-voltage control drive device thereof | |
| CN203251262U (en) | Brushless DC motor power conversion circuit | |
| CN203930398U (en) | A kind of multi-pole circuit change-over switch | |
| CN202818180U (en) | A three-phase brushless DC fan capable of rotating forwards and backwards | |
| CN104467161B (en) | A kind of power supply alternating current-direct current input-switching circuit and method | |
| CN208806761U (en) | Dual-motors Driving kitchen ventilator | |
| CN108900133A (en) | The permanent magnet synchronous motor control device and method of height driving conversion speed | |
| CN203747705U (en) | Motor speed regulation and control circuit for crane running mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20150914 |
|
| EXPY | Termination of patent right or utility model |