CN202889259U - Relay-based circuit for controlling direct current (DC) motor - Google Patents
Relay-based circuit for controlling direct current (DC) motor Download PDFInfo
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- CN202889259U CN202889259U CN 201220562557 CN201220562557U CN202889259U CN 202889259 U CN202889259 U CN 202889259U CN 201220562557 CN201220562557 CN 201220562557 CN 201220562557 U CN201220562557 U CN 201220562557U CN 202889259 U CN202889259 U CN 202889259U
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- direct current
- motor
- current machine
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Abstract
The utility model discloses a relay-based circuit for controlling a direct current (DC) motor, relating to the technical field of a control circuit. The circuit comprises single-pole double-throw (SPDT) relays K1 and K2, wherein a center tap MOTOR+ of the relay K1 is connected with a positive pole of the DC motor, and a center tap MOTOR- of the relay K2 is connected with a negative pole of the DC motor; a voltage difference between the center tap MOTOR+ of the relay K1 and the center tap MOTOR- of the relay K2 is controlled by switching on or switching off the relay K1 and the relay K2; and the DC motor is forwardly rotated if the voltage difference is positive, the DC motor is reversely rotated if the voltage difference is negative, and the DC motor stops rotating when the voltage difference is zero. The circuit is simple in structure, strong in anti-jamming capability, low in cost, and reliable to control.
Description
Technical field
The utility model relates to the control circuit technical field, particularly a kind of circuit based on the Control direct current machine.
Background technology
The rotating of control motor need to provide forward and reverse voltage to motor, and this just needs four-way switch to remove to control the voltage of two inputs of motor.Be the H bridge drive principle equivalent circuit diagram of direct current machine such as Fig. 2, when switch S 1 and S4 were closed, electric current was from the right-hand member of motor left end flow direction motor, and motor is along a direction rotation; When switch S 2 and S3 closure, electric current is from motor right-hand member flow direction motor left end, and motor is along another direction rotation.
In the prior art, mainly realize this control with metal-oxide-semiconductor or motor drive ic, if the circuit of building with metal-oxide-semiconductor needs to solve the problem that the motor two ends suspend, will add many peripheral cells, increased simultaneously many costs; If directly use motor drive ic, then be difficult for realization to the control of heavy-duty motor, and cost is very high; Also useful a plurality of relay is realized in addition, but often its circuit design is unreliable or cost is also very high.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of circuit based on the Control direct current machine is provided, and this circuit structure based on the Control direct current machine is simple, antijamming capability strong, control is reliable, with low cost.
Provide a kind of circuit based on the Control direct current machine for this reason, the relay K 1 and the K2 that comprise single-pole double throw, the centre cap MOTOR+ of relay K 1 connects the positive pole of direct current machine, the centre cap MOTOR-of relay K 2 connects the negative pole of direct current machine, voltage difference between the adhesive of relay K 1 and K2/centre cap MOTOR+ of disconnection control relay K1 and the centre cap MOTOR-of relay K 2, voltage difference is being for just, then the direct current machine forward; Voltage difference is for negative, and then direct current machine reverses; Voltage difference is zero, then direct current machine stall.
Preferably, the equal ground connection of the normally-closed contact of relay K 1 and K2, the normally opened contact of relay K 1 and K2 all connects power supply, serial connection fuse F1 on the input power;
The coil control circuit of relay K 1 is comprised of NPN triode Q1, diode D1, resistance R 1 and R2, diode D1 be used for to eliminate the anti-electrodynamic type when the coil blackout of relay K 1, the energising of the coil of NPN triode Q1 control relay K1/outage, resistance R 1 is the base resistance of NPN triode Q1, and resistance R 2 is the feedback resistance of NPN triode Q1;
The coil control circuit of relay K 2 is comprised of NPN triode Q2, diode D2, resistance R 3 and R4, diode D2 be used for to eliminate the anti-electrodynamic type when the coil blackout of relay K 2, the energising of the coil of NPN triode Q2 control relay K2/outage, resistance R 3 is the base resistance of NPN triode Q2, and resistance R 4 is the feedback resistance of NPN triode Q2.
Preferred, fuse F1 is the self-healing fuse-wire of 6A.
Preferred, the input voltage of relay K 1 and K2 is direct current 12V.
Preferred, the model of NPN triode Q1 and Q2 is BC847.
Preferred, the model of diode D1 and D2 is IN4148.
Preferred, resistance R 1 and R3 are 4.7 kilo-ohms, and resistance R 2 and R4 are 100 kilo-ohms.。
The beneficial effect of a kind of circuit based on the Control direct current machine of the present utility model is, the relay K 1 and the K2 that comprise single-pole double throw, the centre cap MOTOR+ of relay K 1 connects the positive pole of direct current machine, the centre cap MOTOR-of relay K 2 connects the negative pole of direct current machine, adhesive by utilizing relay K 1 and K2/disconnection comes the voltage difference between the centre cap MOTOR-of the centre cap MOTOR+ of control relay K1 and relay K 2, voltage difference is being for just, then the direct current machine forward; Voltage difference is for negative, and then direct current machine reverses; Voltage difference is zero, then direct current machine stall, and circuit structure is simple, antijamming capability is strong, control is reliable, with low cost.
Description of drawings
Fig. 1 is a kind of circuit diagram of the circuit based on the Control direct current machine.
Fig. 2 is the H bridge drive principle equivalent circuit diagram of direct current machine.
Embodiment
A kind of circuit based on the Control direct current machine of present embodiment as shown in Figure 1, the relay K 1 and the K2 that comprise single-pole double throw, the centre cap MOTOR+ of relay K 1 connects the positive pole of direct current machine, the centre cap MOTOR-of relay K 2 connects the negative pole of direct current machine, voltage difference between the adhesive of relay K 1 and K2/centre cap MOTOR+ of disconnection control relay K1 and the centre cap MOTOR-of relay K 2, voltage difference is being for just, then the direct current machine forward; Voltage difference is for negative, and then direct current machine reverses; Voltage difference is zero, then direct current machine stall.
A kind of circuit based on the Control direct current machine of the present utility model, adhesive by utilizing relay K 1 and K2/disconnection comes the voltage difference between the centre cap MOTOR-of the centre cap MOTOR+ of control relay K1 and relay K 2, voltage difference is being for just, then the direct current machine forward; Voltage difference is for negative, and then direct current machine reverses; Voltage difference is zero, then direct current machine stall, and circuit structure is simple, antijamming capability is strong, control is reliable, with low cost.
Concrete, the equal ground connection of the normally-closed contact of relay K 1 and K2, the normally opened contact of relay K 1 and K2 all connects power supply, serial connection fuse F1 on the input power;
The coil control circuit of relay K 1 is comprised of NPN triode Q1, diode D1, resistance R 1 and R2, diode D1 be used for to eliminate the anti-electrodynamic type when the coil blackout of relay K 1, the energising of the coil of NPN triode Q1 control relay K1/outage, resistance R 1 is the base resistance of NPN triode Q1, and resistance R 2 is the feedback resistance of NPN triode Q1;
The coil control circuit of relay K 2 is comprised of NPN triode Q2, diode D2, resistance R 3 and R4, diode D2 be used for to eliminate the anti-electrodynamic type when the coil blackout of relay K 2, the energising of the coil of NPN triode Q2 control relay K2/outage, resistance R 3 is the base resistance of NPN triode Q2, and resistance R 4 is the feedback resistance of NPN triode Q2.
The operation principle of above circuit is as follows:
These two control mouthful lines of M-UP and M-DOWN are controlled by other MCU:
1, sets high level (1) and M-DOWN when setting low level (0) as M-UP, NPN triode Q1 conducting, the coil conduction of relay K 1, relay K 1 adhesive, the centre cap MOTOR+ of relay K 1 contacts with normally opened contact, and this moment, the centre cap MOTOR+ of relay K 1 was connected to supply voltage; Simultaneously not conducting of NPN triode Q2, the coil of relay K 2 is non-conductive, relay K 2 not adhesives, the centre cap MOTOR-of relay K 2 contacts with normally-closed contact, this moment, the centre cap MOTOR-of K2 was connected to ground, and MOTOR+ and MOTOR-have positive electricity pressure reduction like this, the direct current machine forward.
2, set high level (1) and M-DOWN when setting high level (1) as M-UP, NPN triode Q1 conducting, the coil conduction of relay K 1, relay K 1 adhesive, the centre cap MOTOR+ of relay K 1 contacts with normally opened contact, and this moment, K1 centre cap MOTOR+ was connected to supply voltage; Simultaneously NPN triode Q2 conducting, the coil conduction of relay K 2, relay K 2 adhesives, the centre cap MOTOR-of relay K 2 contacts with normally opened contact, this moment, the centre cap MOTOR-of K2 was connected to power supply, and MOTOR+ and MOTOR-do not have voltage difference like this, the direct current machine stall.
3, set low level (0) and M-DOWN when setting high level (1) as M-UP, not conducting of NPN triode Q1, the coil of relay K 1 is non-conductive, relay K 1 not adhesive, the centre cap MOTOR+ of relay K 1 contacts with normally-closed contact, and this moment, K1 centre cap MOTOR+ was connected to ground; Simultaneously NPN triode Q2 conducting, the coil conduction of relay K 2, relay K 2 adhesives, the centre cap MOTOR-of relay K 2 contacts with normally opened contact, this moment, the centre cap MOTOR-of K2 was connected to power supply, and MOTOR+ and MOTOR-have negative electricity pressure reduction like this, the direct current machine counter-rotating.
4, set low level (0) and M-DOWN when setting low level (0) as M-UP, not conducting of NPN triode Q1, the coil of relay K 1 is non-conductive, relay K 1 not adhesive, the centre cap MOTOR+ of relay K 1 contacts with normally-closed contact, and this moment, K1 centre cap MOTOR+ was connected to ground; Simultaneously not conducting of NPN triode Q2, the coil of relay K 2 is non-conductive, relay K 2 not adhesives, the centre cap MOTOR-of relay K 2 contacts with normally-closed contact, this moment, the centre cap MOTOR-of K2 was connected to ground, and MOTOR+ and MOTOR-do not have voltage difference like this, motor stalling.
Concrete, fuse F1 is the self-healing fuse-wire of 6A.
Concrete, the input voltage of relay K 1 and K2 is direct current 12V.
Concrete, the model of NPN triode Q1 and Q2 is BC847.
Concrete, the model of diode D1 and D2 is IN4148.
Should be noted that at last; above embodiment only is used for the explanation the technical solution of the utility model but not to the restriction of the utility model protection range; although with reference to preferred embodiment the utility model has been done detailed description; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (7)
1. circuit based on the Control direct current machine, it is characterized in that, the relay K 1 and the K2 that comprise single-pole double throw, the centre cap MOTOR+ of relay K 1 connects the positive pole of direct current machine, the centre cap MOTOR-of relay K 2 connects the negative pole of direct current machine, voltage difference between the adhesive of relay K 1 and K2/centre cap MOTOR+ of disconnection control relay K1 and the centre cap MOTOR-of relay K 2, voltage difference be for just, then the direct current machine forward; Voltage difference is for negative, and then direct current machine reverses; Voltage difference is zero, then direct current machine stall.
2. a kind of circuit based on the Control direct current machine according to claim 1 is characterized in that, the equal ground connection of the normally-closed contact of relay K 1 and K2, and the normally opened contact of relay K 1 and K2 all connects power supply, serial connection fuse F1 on the input power;
The coil control circuit of relay K 1 is comprised of NPN triode Q1, diode D1, resistance R 1 and R2, diode D1 be used for to eliminate the anti-electrodynamic type when the coil blackout of relay K 1, the energising of the coil of NPN triode Q1 control relay K1/outage, resistance R 1 is the base resistance of NPN triode Q1, and resistance R 2 is the feedback resistance of NPN triode Q1;
The coil control circuit of relay K 2 is comprised of NPN triode Q2, diode D2, resistance R 3 and R4, diode D2 be used for to eliminate the anti-electrodynamic type when the coil blackout of relay K 2, the energising of the coil of NPN triode Q2 control relay K2/outage, resistance R 3 is the base resistance of NPN triode Q2, and resistance R 4 is the feedback resistance of NPN triode Q2.
3. a kind of circuit based on the Control direct current machine according to claim 2 is characterized in that, fuse F1 is the self-healing fuse-wire of 6A.
4. a kind of circuit based on the Control direct current machine according to claim 2 is characterized in that, the input voltage of relay K 1 and K2 is direct current 12V.
5. a kind of circuit based on the Control direct current machine according to claim 2 is characterized in that, the model of NPN triode Q1 and Q2 is BC847.
6. a kind of circuit based on the Control direct current machine according to claim 2 is characterized in that, the model of diode D1 and D2 is IN4148.
7. a kind of circuit based on the Control direct current machine according to claim 2 is characterized in that, resistance R 1 and R3 are 4.7 kilo-ohms, and resistance R 2 and R4 are 100 kilo-ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562557 CN202889259U (en) | 2012-10-30 | 2012-10-30 | Relay-based circuit for controlling direct current (DC) motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562557 CN202889259U (en) | 2012-10-30 | 2012-10-30 | Relay-based circuit for controlling direct current (DC) motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889259U true CN202889259U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220562557 Expired - Fee Related CN202889259U (en) | 2012-10-30 | 2012-10-30 | Relay-based circuit for controlling direct current (DC) motor |
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| Country | Link |
|---|---|
| CN (1) | CN202889259U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610979A (en) * | 2017-10-24 | 2018-01-19 | 金陵科技学院 | A kind of elevating lever based on Control |
-
2012
- 2012-10-30 CN CN 201220562557 patent/CN202889259U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610979A (en) * | 2017-10-24 | 2018-01-19 | 金陵科技学院 | A kind of elevating lever based on Control |
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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: 20130417 Termination date: 20151030 |
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| EXPY | Termination of patent right or utility model |