CN216873103U - Self-locking device for step motor of cradle head during power-off and static states - Google Patents
Self-locking device for step motor of cradle head during power-off and static states Download PDFInfo
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- CN216873103U CN216873103U CN202220484464.4U CN202220484464U CN216873103U CN 216873103 U CN216873103 U CN 216873103U CN 202220484464 U CN202220484464 U CN 202220484464U CN 216873103 U CN216873103 U CN 216873103U
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- triode
- relay
- optocoupler
- step motor
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Abstract
The utility model provides a step motor outage for cloud platform, device of auto-lock during static, opto-coupler I, opto-coupler II, triode I, triode II, relay I and relay II, can form a return circuit when utilizing step motor cophase short circuit, step motor if rotating because of external force this moment, step motor's coil can produce reverse magnetic field and prevent step motor pivoted principle, through a simple circuit arrangement, when the cloud platform is static and the outage, with step motor's cophase short circuit, form the auto-lock.
Description
Technical Field
The utility model relates to the technical field of cloud platforms, in particular to a device for self-locking a stepping motor of a cloud platform when the stepping motor is powered off and is static.
Background
The tripod head is used for carrying rotating parts of security protection equipment such as a camera, a radar and the like, is often used in vehicle-mounted and ship-mounted environments and can be often in a vibration state, needs strong self-locking force when the horizontal and pitching axes of the tripod head are static and are powered off, prevents the horizontal and pitching positions of the tripod head from shifting due to vibration, and hardly ensures that two axes of the tripod head do not rotate only by the self-locking force of a worm gear of the tripod head, so that a stepping motor of the tripod head is required to be self-locked, and the self-locking force of the tripod head is enhanced. Generally, a stepping motor needs to be self-locked, static current needs to be set for the stepping motor, the motor can generate heat when the stepping motor is static, the service lives of the motor and a driver are influenced, and the self-locking of the motor cannot be kept after the stepping motor is powered off. And the motor is provided with the band-type brake device, so that the volume and the cost of the holder can be increased. The utility model utilizes the principle that a loop can be formed when the stepping motor is in-phase short circuit, and at the moment, if the motor rotates due to external force, the coil of the stepping motor can generate a reverse magnetic field to prevent the motor from rotating.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a device for self-locking a motor and preventing the rotation from causing the offset of a pan-tilt.
The technical scheme adopted by the utility model for overcoming the technical problems is as follows:
the utility model provides a device that is used for step motor outage of cloud platform, auto-lock when static which characterized in that includes:
the negative electrode of the input end of the optocoupler I is connected to a PE9 pin of the singlechip through a resistor I, the positive electrode of the input end of the optocoupler I is connected to a 3V power supply, the collector of the output end of the optocoupler I is respectively connected to a 12V power supply and the negative electrode of the diode I, the emitter of the output end of the optocoupler is respectively connected to the base electrode of the triode I through a resistor III and connected to the emitter of the triode I through a resistor IV, the emitter of the triode I is grounded, and the collector of the triode I is connected to the positive electrode of the diode I;
the negative electrode of the input end of the optocoupler II is connected with a PE8 pin of the singlechip through a resistor II, the positive electrode of the input end of the optocoupler II is connected with a 3V power supply, the collector of the output end of the optocoupler II is respectively connected with a 12V power supply and the negative electrode of the diode II, the emitter of the output end of the optocoupler II is respectively connected with the base electrode of the triode II through a resistor V and the emitter of the triode II through a resistor VI, the emitter of the triode II is grounded, and the collector of the triode II is connected with the positive electrode of the diode II;
one end of a coil of the relay I is connected to the cathode of the diode I, the other end of the coil of the relay I is connected to the anode of the diode I, the common end of the relay I is connected to the A-phase negative pole of the stepping motor, and the normally closed end of the relay I is connected to the A-phase positive pole of the stepping motor;
and one end of a coil of the relay II is connected to the cathode of the diode II, the other end of the coil of the relay II is connected to the anode of the diode II, the common end of the relay II is connected to the B phase cathode of the stepping motor, and the normally closed end of the relay II is connected to the B phase anode of the stepping motor.
Preferably, the single chip microcomputer is a stm32f103vet6 type single chip microcomputer.
Preferably, the optical coupler I is a PC817 type optical coupler.
Preferably, the optical coupler II is a PC817 type optical coupler.
Furthermore, the anode of the input end of the optical coupler I is grounded through the capacitor I, and the anode of the input end of the optical coupler II is grounded through the capacitor II.
The utility model has the beneficial effects that: the self-locking mechanism has the advantages that a loop can be formed when the in-phase short circuit of the stepping motor is utilized, if the stepping motor rotates due to external force, the coil of the stepping motor can generate a reverse magnetic field to prevent the stepping motor from rotating, and the in-phase short circuit of the stepping motor is formed through a simple circuit device when the cradle head is static and is powered off.
Drawings
FIG. 1 is a circuit block diagram of the present invention;
in the figure, 1, a single chip microcomputer 2, an optical coupler I3, an optical coupler II 4, a resistor I5, a resistor II 6, a capacitor I7, a capacitor II 8, a diode I9, a diode II 10, a triode I11, a triode II 12, a resistor III 13, a resistor IV 14, a resistor V15, a resistor VI 16, a relay I17, a relay II 18 and a stepping motor.
Detailed Description
The utility model is further illustrated with reference to fig. 1.
The utility model provides a device that is used for step motor outage of cloud platform, auto-lock when static which characterized in that includes:
the negative electrode of the input end of the optocoupler I2 is connected to a PE9 pin of the singlechip 1 through a resistor I4, the positive electrode of the input end of the optocoupler I2 is connected to a 3V power supply, the collector of the output end of the optocoupler I2 is respectively connected to a 12V power supply and the negative electrode of the diode I8, the emitter of the output end of the optocoupler is respectively connected to the base electrode of the triode I10 through a resistor III 12 and the emitter of the triode I10 through a resistor IV 13, the emitter of the triode I10 is grounded, and the collector of the triode I10 is connected to the positive electrode of the diode I8; the cathode of the input end of the optocoupler II 3 is connected to a PE8 pin of the singlechip 1 through a resistor II 5, the anode of the input end of the optocoupler II 3 is connected to a 3V power supply, the collector of the output end of the optocoupler II is connected to a 12V power supply and the cathode of the diode II 9 respectively, the emitter of the output end of the optocoupler II is connected to the base of the triode II 11 through a resistor V14 and connected to the emitter of the triode II 11 through a resistor VI 15 respectively, the emitter of the triode II 11 is grounded, and the collector of the triode II 11 is connected to the anode of the diode II 9; one end of a coil of the relay I16 is connected to the cathode of the diode I8, the other end of the coil of the relay I16 is connected to the anode of the diode I8, the common end of the relay I is connected to the A-phase cathode of the stepping motor 18, and the normally closed end of the relay I is connected to the A-phase anode of the stepping motor 18; and one end of a coil of the relay II 17 is connected to the cathode of the diode II 9, the other end of the coil of the relay II is connected to the anode of the diode II 9, the common end of the relay II is connected to the B phase cathode of the stepping motor 18, and the normally closed end of the relay II is connected to the B phase anode of the stepping motor 18.
Relay I16 and relay II 17 are normal close type relays, when the cloud platform outage, step motor 18A is positive and A looks negative, B looks positive and B looks negative short circuit keeps the auto-lock, or when the cloud platform was static, singlechip 1 control PE8 and PE9 output high level, opto-coupler I2 and opto-coupler II 3 input do not switch on, its output projecting pole does not have the output, consequently triode I10 and triode II 11 do not switch on, relay I16 and relay II 17 normal close actuation, step motor 18A looks positive and A looks negative, B looks positive and B looks negative short circuit keeps the auto-lock.
When the tripod head normally moves, the singlechip 1 controls PE8 and PE9 to output low level, the input end of the optical coupler I2 is conducted with the input end of the optical coupler II 3, the output end of the optical coupler is conducted, and the emitting electrode has output, so that the triode I10 and the triode II 11 are conducted, the relay I16 and the relay II 17 are normally open and attracted after passing through the diode I8 and the diode II 9 respectively, the phase A of the stepping motor 18 is positive and negative with the phase A, the phase B is positive and negative with the phase B, and the stepping motor 18 normally works.
The resistor I4 and the resistor II 5 play a role in protecting an IO port of the single chip microcomputer 1, the resistor III 12 and the resistor V14 play a role in providing bias current for bases of the triode I10 and the triode II 11 respectively, and the resistor IV 13 and the resistor VI play a role in ensuring that the triode I10 and the triode II 11 are reliably turned off and conducted respectively.
Utilize step motor 18 homophase to form a return circuit when short circuit, if step motor 18 rotated because of external force this moment, step motor 18's coil can produce the principle that reverse magnetic field prevents step motor 18 to rotate, through a simple circuit arrangement, when the cloud platform is static and outage, with step motor 18 homophase short circuit, form the auto-lock.
Further, the single chip microcomputer 1 is an stm32f103vet6 type single chip microcomputer. The optical coupler I2 is a PC817 type optical coupler. And the optocoupler II 3 is a PC817 type optocoupler.
Furthermore, the anode of the input end of the optocoupler I2 is grounded through a capacitor I6, and the anode of the input end of the optocoupler II 3 is grounded through a capacitor II 7. And the capacitor I6 and the capacitor II 7 play a role in filtering.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a device that is used for step motor outage of cloud platform, auto-lock when static which characterized in that includes:
the negative electrode of the input end of the optocoupler I (2) is connected to a PE9 pin of the singlechip (1) through a resistor I (4), the positive electrode of the input end of the optocoupler I is connected to a 3V power supply, the collector of the output end of the optocoupler I is connected to a 12V power supply and the negative electrode of the diode I (8) respectively, the emitter of the output end of the optocoupler I is connected to the base electrode of the triode I (10) through a resistor III (12) and the emitter of the triode I (10) through a resistor IV (13), the emitter of the triode I (10) is grounded, and the collector of the triode I (10) is connected to the positive electrode of the diode I (8);
the negative electrode of the input end of the optocoupler II (3) is connected to a PE8 pin of the singlechip (1) through a resistor II (5), the positive electrode of the input end of the optocoupler II (3) is connected to a 3V power supply, the collector of the output end of the optocoupler II (3) is respectively connected to a 12V power supply and the negative electrode of the diode II (9), the emitter of the output end of the optocoupler II is respectively connected to the base electrode of the triode II (11) through a resistor V (14) and the emitter of the triode II (11) through a resistor VI (15), the emitter of the triode II (11) is grounded, and the collector of the triode II (11) is connected to the positive electrode of the diode II (9);
one end of a coil of the relay I (16) is connected to the negative pole of the diode I (8), the other end of the coil of the relay I is connected to the positive pole of the diode I (8), the common end of the relay I is connected to the negative A phase of the stepping motor (18), and the normally closed end of the relay I is connected to the positive A phase of the stepping motor (18);
and one end of a coil of the relay II (17) is connected to the cathode of the diode II (9), the other end of the coil of the relay II is connected to the anode of the diode II (9), the common end of the relay II is connected to the B-phase negative of the stepping motor (18), and the normally closed end of the relay II is connected to the B-phase positive of the stepping motor (18).
2. A device for self-locking when a step motor of a head is powered off and stationary as claimed in claim 1, characterized in that: the single chip microcomputer (1) is an stm32f103vet6 type single chip microcomputer.
3. A device for self-locking when a step motor of a head is powered off and stationary as claimed in claim 1, characterized in that: the optical coupler I (2) is a PC817 type optical coupler.
4. A device for self-locking when a step motor of a head is powered off and stationary as claimed in claim 1, characterized in that: and the optocoupler II (3) is a PC817 type optocoupler.
5. A device for self-locking when a step motor of a head is powered off and stationary as claimed in claim 1, characterized in that: the input end anode of the optical coupler I (2) is grounded through a capacitor I (6), and the input end anode of the optical coupler II (3) is grounded through a capacitor II (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220484464.4U CN216873103U (en) | 2022-03-08 | 2022-03-08 | Self-locking device for step motor of cradle head during power-off and static states |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220484464.4U CN216873103U (en) | 2022-03-08 | 2022-03-08 | Self-locking device for step motor of cradle head during power-off and static states |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216873103U true CN216873103U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220484464.4U Active CN216873103U (en) | 2022-03-08 | 2022-03-08 | Self-locking device for step motor of cradle head during power-off and static states |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216873103U (en) |
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2022
- 2022-03-08 CN CN202220484464.4U patent/CN216873103U/en active Active
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