CN203729783U - Door opener closed-loop self-control device - Google Patents
Door opener closed-loop self-control device Download PDFInfo
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- CN203729783U CN203729783U CN201420074891.0U CN201420074891U CN203729783U CN 203729783 U CN203729783 U CN 203729783U CN 201420074891 U CN201420074891 U CN 201420074891U CN 203729783 U CN203729783 U CN 203729783U
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- control chip
- mcu
- drive circuit
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000006698 induction Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model relates to a door opener closed-loop self-control device, wherein an output end of a microprogrammed control unit (MCU) control chip is connected with an input end of a motor control chip through an analog to digital (A/D) conversion chip, an input end of a driving circuit is connected with an output end of the motor control chip, an output end of the driving circuit is connected with an input end of a motor, one end of a motor speed measuring chip is connected with the motor, the other end of the motor speed measuring chip is connected onto an input end of the MCU control chip through the A/D conversion chip, one end of a current sampling chip is connected with the driving circuit, the other end of the current sampling chip is connected onto the input end of the MCU control chip through the A/D conversion chip, and the MCU control chip is further connected with a sensor through an interface circuit. The door opener closed-loop self-control device enables a door to be capable of reducing speed to generate excellent wind resistance under the impact of the wind by utilizing a method which combines a closed-loop feedfack principle and pulse-width modulation (PWM) pulse width modulation signals.
Description
Technical field
The utility model relates to a kind of door lifter field, specifically a kind of door lifter closed loop self-con-tained unit.
Background technology
In the process that at present door lifter is closed at door, due to the rotating speed of door and the stack of the speed of wind, can make the impact force that a generation is very large, only depend on the resistance between machinery windproof unreliable, the impact that door is subject to wind is easy to occur out of control, causes contingency.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of closed loop feedback principle of utilizing in conjunction with the device of PWM pulse-width signal, thereby makes can slow down and produce good wind resistance under the impact of Men Feng.
The technical scheme that the utility model adopted is for achieving the above object:
A kind of door lifter closed loop self-con-tained unit, comprise MCU control chip, drive circuit, A/D conversion chip, motor, motor control chip, motor speed measuring chip and current sample chip, the output of MCU control chip connects the input of motor control chip by A/D conversion chip, send control signal to motor control chip;
The input of drive circuit connects the output of motor control chip, receives the control signal that motor control chip sends, and the output of drive circuit connects the input of motor, sends and drives signal to motor;
Motor speed measuring chip one end connects motor, gathers the real-time frequency signal of motor, and the other end is connected to the input of MCU control chip by A/D conversion chip, the real-time frequency signal collecting is sent to MCU control chip;
Current sample chip one end connects drive circuit, gathers real-time current signal, and the other end is connected to the input of MCU control chip by A/D conversion chip, the real-time current signal collecting is sent to MCU control chip;
MCU control chip also passes through interface circuit connecting sensor, the induction information that receiving sensor gathers.
Described drive circuit adopts IGBT drive circuit.
The utlity model has following beneficial effect and advantage:
1. the strong interference immunity to wind in running.
2., even if the impact door that is subject to wind also can stable operation, can not damage door.
3. adopt closed-loop control, control stability is strong.
Accompanying drawing explanation
Fig. 1 is hardware structure diagram of the present utility model;
Fig. 2 is I/U change curve of the present utility model;
Fig. 3 is A/D sampled signal sequential chart of the present utility model;
Fig. 4 is motor PWM signal modulation figure of the present utility model;
Fig. 5 is PWM internal feedback sequential chart of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Be illustrated in figure 1 hardware structure diagram of the present utility model, when people enters the induction zone of sensor and moves, sensor sends MCU to after the signal of acceptance can being processed by interface circuit, by MCU, send the command signal of opening the door, through A/D, conversion passes to motor control chip by analog signal, motor control chip is exported corresponding PWM waveform and through overdrive circuit rear drive motor rotation, door is opened after receiving signal.
Motor speed measuring chip (MC33035) becomes corresponding level signal by the frequency inverted detecting, by D/A, change and convert data signal to and feed back to MCU again, after MCU compares, send corresponding control command again and through A/D, be transformed into motor control chip and remove to control motor and carry out accurate speed governing, such closed-loop control both can guarantee that door lifter was with the velocity-stabilization of the setting action of opening the door.Under the control of MCU, door lifter is controlled after reaching 90 ° and can be stopped several seconds (i.e. temporarily empty time) to make things convenient for customers and can enter safely by stopping means, and after this MCU sends the command signal of closing the door and makes door can close so that setting speed is stable (during same opening the door, principle is the same).Door lifter enters state undetermined and waits for triggering next time.
MCU expansion interface around can need to carry out the expansion of corresponding function according to user simultaneously, as fingerprint recognition, image recognition, IC swipe the card, fire-fighting UNICOM
Anti-pinch people and the anti-principle of work and power that pushes
Be illustrated in figure 2 I/U change curve.Electric current increases along with the increase of voltage, and the lower current value of normal work is 1A, when electric current arrives 4A, is anti-pinch people collection point.If firmly pushed, electric current reaches larger value.
If Fig. 3 is A/D sampled signal sequential chart; Anti-pinch people is the same with the principle of the anti-function that pushes, and is all the principle of utilizing current sample feedback.Drive circuit adopts IGBT drive circuit.Electric current during normal work on IBGT is 1.25A, electric current when having people nipped on IGBT can be increased to 3.75A left and right, current sample chip (MC33039) converts through A/D the current signal collecting to data signal and feeds back to MCU, MCU compares the signal of sampling with the 3.75A of setting, if sampled signal is can be determined with people about 3.75A to be jammed, MCU can send the corresponding command motor is rotated backward like this, and door reverse opening, prevents that people is injured.The anti-principle pushing is the same with anti-pinch people, and the electric current producing when just people thrusts is larger, so the current value gathering is also greater.
Wind-shielding function principle
Be illustrated in figure 4 motor PWM signal modulation figure.When running well, door inputs three-phase voltage PWM waveform and the amplitude-modulated signal of motor.
When having wind door, the PWM three-phase voltage waveform of input motor can change, and only detects wherein one mutually, by current sample, can feed back to MCU.When MCU detects this variation, will send the corresponding command amplitude-modulated signal is carried out to peak clipping processing, thereby make the temporary empty of PWM waveform of inputting motor make the speed of motor slack-off than increasing, to weaken wind action, reach protection effect, as Fig. 5.
Claims (2)
1. a door lifter closed loop self-con-tained unit, comprises MCU control chip, drive circuit, A/D conversion chip, motor, motor control chip, motor speed measuring chip and current sample chip, it is characterized in that:
The output of MCU control chip connects the input of motor control chip by A/D conversion chip, send control signal to motor control chip;
The input of drive circuit connects the output of motor control chip, receives the control signal that motor control chip sends, and the output of drive circuit connects the input of motor, sends and drives signal to motor;
Motor speed measuring chip one end connects motor, gathers the real-time frequency signal of motor, and the other end is connected to the input of MCU control chip by A/D conversion chip, the real-time frequency signal collecting is sent to MCU control chip;
Current sample chip one end connects drive circuit, gathers real-time current signal, and the other end is connected to the input of MCU control chip by A/D conversion chip, the real-time current signal collecting is sent to MCU control chip;
MCU control chip also passes through interface circuit connecting sensor, the induction information that receiving sensor gathers.
2. door lifter closed loop self-con-tained unit according to claim 1, is characterized in that: described drive circuit adopts IGBT drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074891.0U CN203729783U (en) | 2014-02-20 | 2014-02-20 | Door opener closed-loop self-control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074891.0U CN203729783U (en) | 2014-02-20 | 2014-02-20 | Door opener closed-loop self-control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729783U true CN203729783U (en) | 2014-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074891.0U Expired - Fee Related CN203729783U (en) | 2014-02-20 | 2014-02-20 | Door opener closed-loop self-control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729783U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295181A (en) * | 2014-08-28 | 2015-01-21 | 东莞首资宝电器制造有限公司 | Bathroom cabinet with door opened and closed through automatic induction |
| CN104863449A (en) * | 2014-02-20 | 2015-08-26 | 张曦 | Closed-loop automatic control device and method of door opener |
-
2014
- 2014-02-20 CN CN201420074891.0U patent/CN203729783U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863449A (en) * | 2014-02-20 | 2015-08-26 | 张曦 | Closed-loop automatic control device and method of door opener |
| CN104295181A (en) * | 2014-08-28 | 2015-01-21 | 东莞首资宝电器制造有限公司 | Bathroom cabinet with door opened and closed through automatic induction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160908 Address after: I wish this street in Dongling District of Shenyang city of Liaoning Province in 110034 Patentee after: Liaoning Doyle Intelligent Machinery Manufacturing Co., Ltd. Address before: 110000 No. 248 Xiao Nan Street, Shenhe District, Liaoning, Shenyang Patentee before: Zhang Xi |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20190220 |