CN107390574B - Controllable mechanical shutter light blocking device - Google Patents
Controllable mechanical shutter light blocking device Download PDFInfo
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- CN107390574B CN107390574B CN201710545327.0A CN201710545327A CN107390574B CN 107390574 B CN107390574 B CN 107390574B CN 201710545327 A CN201710545327 A CN 201710545327A CN 107390574 B CN107390574 B CN 107390574B
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 32
- 230000003321 amplification Effects 0.000 claims abstract description 24
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims description 36
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 8
- 230000004044 response Effects 0.000 abstract description 8
- 238000002474 experimental method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Stepping Motors (AREA)
- Exposure Control For Cameras (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
A controllable light blocking device of a mechanical shutter comprises a single chip microcomputer, a driving circuit and a stepping motor, wherein the single chip microcomputer receives signals generated by an external signal generator, and the signals are input into the driving circuit after being processed by a burning program. The drive circuit realizes the amplification and processing of signals and excites the stepping motor. The stepping motor receives the excitation driving signal and controls the level of different stators in the stepping motor to realize the speed change forward and reverse rotation of the light blocking strip. The invention realizes the speed change and the controllability of the light blocking strip by controlling the forward rotation and the reverse rotation of the stepping motor through the singlechip, thereby solving the problems of slow response, large overshoot, uncontrollable and the like of the mechanical shutter and finally achieving the effect of controlling light blocking. The system has the characteristics of controllable rotating speed, angle and direction, has the advantages of small vibration, short response time, high turn-off time, low cost and the like, and can meet the requirements of cold atom experiments.
Description
Technical Field
The invention relates to the fields of laser beam control, photoelectric detection technology and the like, in particular to an experimental system needing controllable light blocking.
Technical Field
The mechanical shutter applied to the cold atom interference type gravimeter generally needs to have the characteristics of low vibration noise, controllable turn-off speed, long service life, short response time, low cost and the like. Most of the existing mechanical shutters are expensive and have short service life, and the light blocking time and vibration noise cannot be controlled, so that the invention can meet the requirements of cold atom experiments.
Disclosure of Invention
The invention aims to overcome the defects of the prior mechanical shutter light blocking technology and provide a variable-speed controllable mechanical shutter light blocking system for an atomic interferometer, which has short response time, quick closing time and lower cost.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a controllable mechanical shutter light blocking device is characterized in that: the single-chip microcomputer 1 processes signals generated by the external signal generator and then inputs the processed signals into a signal input unit S1 of the driving circuit 2; the driving circuit 2 comprises a signal input unit S1, a logic conversion unit S2, a driving unit S3 and a signal output unit S4 which are connected in sequence, wherein the logic conversion unit S2 performs signal conversion, the driving unit S3 performs driving amplification of signals, and the signal output unit S4 is connected with the input end of the stepping motor 3; a light blocking strip 4 used as a mechanical shutter is adhered to an output shaft of the stepping motor 3; an adjusting sheet 5 is also arranged on the shell of the stepping motor 3, and the height and the angle of the light blocking strip 4 are adjusted by the light blocking strip 4 through the adjusting sheet 5.
The driving circuit 2 includes a signal input unit S1, a logic conversion unit S2, a driving unit S3, and a signal output unit S4. In the signal input unit S1, the connector J1 is connected to the output terminal of the single chip microcomputer 1 to receive the signal processed by the single chip microcomputer 1, the pin 1 of the connector J1 is connected to the pin 2 of the nand gate conversion chip U1 and the pin 1 of the signal amplification chip U2 in the driving unit S3, the pin 2 of the connector J1 is connected to the pin 4 of the nand gate conversion chip U1 and the pin 4 of the signal amplification chip U2 in the driving unit S3, and the pin 3 of the connector J1 is grounded. The logic conversion unit S2 comprises a NAND gate conversion chip U1, pins 1, 5 and 8 of the NAND gate conversion chip U1 are connected with the positive electrode of a power supply, a pin 7 of the NAND gate conversion chip U1 is connected with the ground, pins 3 and 6 of the NAND gate conversion chip U1 are respectively connected with pins 2 and 3 of a signal amplification chip U2 in the driving unit S3, the driving unit S3 comprises a signal amplification chip U2, a pin 5 of the signal amplification chip U2 is connected with the ground, a pin 6 is connected with the positive electrode of the power supply, a capacitor C is connected between the pin 5 and the pin 6, and the capacitor C plays a role in filtering. Pins 10, 9, 8 and 7 of a signal amplification chip U2 are respectively connected with pins 2, 3, 4 and 5 of a connector S which is connected with a motor pin in a signal output unit S4, a pin 1 of the connector S in the signal output unit S4 is connected with the anode of a power supply, the connector P is externally connected with a power supply, wherein the pin 1 is connected with a power supply of a circuit board, the pin 2 is connected with a voltage of +6 to +12V for supplying power to the motor, and the pin 3 is grounded. The signal is input in the signal input unit S1, the signal is changed through the nand gate structure in the logic conversion unit S2, the signal is amplified through the signal amplification module in the driving unit S3, and the finally amplified signal is output to the stepping motor through the connector S in the signal output unit S4, so as to control the forward and reverse rotation speed and the rotation speed of the motor.
The single chip microcomputer is preset with a control program, the computer can change an externally input signal after burning a control code into the single chip microcomputer, the control program defines a forward rotation code 0x08 and a reverse rotation code 0x04, and different stators of the motor are respectively controlled to be electrified to attract the rotor to rotate. The program defines a time delay to prevent the motor from rotating at too high a frequency. The program can form output signals with different frequencies and different high and low levels by using the change of a code structure and matching with the change of the frequency of an input single chip microcomputer signal, thereby controlling the motor to rotate at different rotating speeds, different amplitudes and different directions.
The invention has the advantages that: the mechanical shutter can be applied to a mechanical shutter in a cold atom interference type gravity meter, and has the advantages of low vibration noise, controllable turn-off speed, long service life, short response time and low cost.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention.
Fig. 2 is a schematic view of the structure of the motor unit of the present invention.
Fig. 3 is a schematic diagram of a circuit unit structure according to the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As described above, it is an object of the present invention to provide a mechanical shutter applicable to a cold atom interference type gravimeter. The invention utilizes the change of the singlechip code and the external signal frequency to form different high and low levels, and changes the magnetism of the stator to attract the rotation of different rotors after the input of the stepping motor, thereby controlling different rotation speeds and rotation directions of the motor.
A controllable mechanical shutter light blocking device is characterized in that: the single-chip microcomputer 1 processes signals generated by the external signal generator and then inputs the processed signals into a signal input unit S1 of the driving circuit 2; the driving circuit 2 comprises a signal input unit S1, a logic conversion unit S2, a driving unit S3 and a signal output unit S4 which are connected in sequence, wherein the logic conversion unit S2 performs signal conversion, the driving unit S3 performs driving amplification of signals, and the signal output unit S4 is connected with the input end of the stepping motor 3; a light blocking strip 4 used as a mechanical shutter is adhered to an output shaft of the stepping motor 3; an adjusting sheet 5 is also arranged on the shell of the stepping motor 3, and the height and the angle of the light blocking strip 4 are adjusted by the light blocking strip 4 through the adjusting sheet 5.
Fig. 1 shows a schematic structural diagram of the apparatus of the present invention, which is applied to a laser light blocking system in a cold atom interference type gravimeter, and the present invention is a controllable mechanical shutter light blocking apparatus, and includes a single chip microcomputer, a driving circuit, and a motor, wherein a signal generated by an external signal generator is processed by a single chip microcomputer control unit 1, and is first input to a signal input unit S1 in the driving circuit unit, then is subjected to a signal conversion by a logic conversion unit S2, and is input to a driving unit S3 for driving and amplification, and is finally output to a stepping motor 3 through a signal output unit S4 to control rotation of a magnetic attraction rotor of different stators of the motor, and finally rotation of light blocking strips 4 at different speeds, different angles, and different directions is realized, and an adjustment sheet 5 is further designed in the motor unit for adjusting the height and angle of the light blocking strips 4 in the motor.
Fig. 2 shows a schematic structural diagram of a motor unit, which is composed of a stepping motor 3, a light barrier strip 4 and an adjustment strip 5. The stepping motor 3 can add high and low levels at the pin thereof to control the magnetism of the stator magnet therein, thereby controlling the rotating direction and angle of the stepping motor. The stepping motor is composed of a main rotating shaft, a support for fixing and a plurality of wires, wherein the main rotating shaft is arranged on the surface of the motor and can be pasted with a light blocking strip. The light blocking strip 4 can be a rectangular strip cut from thin steel sheets, hardboards, copper strips and the like and can be stuck on the main rotating shaft of the motor. The adjusting sheet 5 can adjust the integral inclination angle of the stepping motor, and can be a rectangular strip cut from a thin steel sheet.
Fig. 3 shows a schematic structural diagram of the driving circuit 2, and the driving circuit 2 is composed of four circuit units including: a signal input unit S1, a logic conversion unit S2, a driving unit S3 and a signal output unit S4. In the signal input unit S1, the connector J1 is connected to the output terminal of the single chip microcomputer 1 to receive the signal processed by the single chip microcomputer 1, the pin 1 of the connector J1 is connected to the pin 2 of the nand gate conversion chip U1 and the pin 1 of the signal amplification chip U2 in the driving unit S3, the pin 2 of the connector J1 is connected to the pin 4 of the nand gate conversion chip U1 and the pin 4 of the signal amplification chip U2 in the driving unit S3, and the pin 3 of the connector J1 is grounded. The logic conversion unit S2 comprises a NAND gate conversion chip U1, pins 1, 5 and 8 of the NAND gate conversion chip U1 are connected with the positive electrode of a power supply, a pin 7 of the NAND gate conversion chip U1 is connected with the ground, pins 3 and 6 of the NAND gate conversion chip U1 are respectively connected with pins 2 and 3 of a signal amplification chip U2 in the driving unit S3, the driving unit S3 comprises a signal amplification chip U2, a pin 5 of the signal amplification chip U2 is connected with the ground, a pin 6 is connected with the positive electrode of the power supply, a capacitor C is connected between the pin 5 and the pin 6, and the capacitor C plays a role in filtering. Pins 10, 9, 8 and 7 of a signal amplification chip U2 are respectively connected with pins 2, 3, 4 and 5 of a connector S which is connected with a motor pin in a signal output unit S4, a pin 1 of the connector S in the signal output unit S4 is connected with the anode of a power supply, the connector P is externally connected with a power supply, wherein the pin 1 is connected with a power supply of a circuit board, the pin 2 is connected with a voltage of +6 to +12V for supplying power to the motor, and the pin 3 is grounded. The signal is input in the signal input unit S1, the signal is changed through the nand gate structure in the logic conversion unit S2, the signal is amplified through the signal amplification module in the driving unit S3, and the finally amplified signal is output to the stepping motor through the connector S in the signal output unit S4, so as to control the forward and reverse rotation speed and the rotation speed of the motor.
The single chip microcomputer 1 receives signals generated by an external signal generator, and inputs the signals into the driving circuit 2 after the signals are processed by a burning program. The drive circuit 2 amplifies and processes the signal and energizes the stepping motor 3. The stepping motor 3 receives the excitation driving signal and controls the level of different stators in the stepping motor to realize the variable speed forward and backward rotation of the light blocking strip. The invention realizes the speed change and the controllability of the light blocking strip 4 by controlling the forward rotation and the reverse rotation of the stepping motor 3 through the singlechip 1, thereby solving the problems of slow response, large overshoot, uncontrollable and the like of a mechanical shutter and finally achieving the effect of controlling light blocking. The system has the characteristics of controllable rotating speed, angle and direction, has the advantages of small vibration, short response time, high turn-off time, low cost and the like, and can meet the requirements of cold atom experiments.
The invention shows the specific implementation mode of the invention by utilizing the specific implementation case, the change of the rotating speed, the angle and the direction of the motor can be realized by changing the control code of the singlechip and the frequency of an external input signal, and the mechanical shutter device has small vibration and quick response time and can be suitable for high-precision cold atom gravimeter experiments.
Claims (1)
1. A controllable mechanical shutter light blocking device is characterized in that: the device comprises a single chip microcomputer (1), a driving circuit (2) and a stepping motor (3), wherein the input end of the single chip microcomputer (1) is connected with an external signal generator, the output end of the single chip microcomputer (1) is connected with the input end of the driving circuit (2), and the single chip microcomputer (1) processes signals generated by the external signal generator and then inputs the processed signals into a signal input unit S1 of the driving circuit (2); the driving circuit (2) comprises a signal input unit S1, a logic conversion unit S2, a driving unit S3 and a signal output unit S4 which are sequentially connected, wherein the logic conversion unit S2 is used for signal conversion, the driving unit S3 is used for driving and amplifying signals, and the signal output unit S4 is connected with the input end of the stepping motor (3); a light blocking strip (4) used as a mechanical shutter is adhered to an output shaft of the stepping motor (3), and one end of the light blocking strip (4) is connected with the output shaft of the stepping motor (3) and is of a cantilever beam structure; an adjusting sheet (5) is further mounted on the shell of the stepping motor (3), and the height and the angle of the light blocking strip (4) are adjusted by the light blocking strip (4) through the adjusting sheet (5);
in the signal input unit S1, the connector J1 is connected to the output end of the single chip microcomputer 1 to receive the signal processed by the single chip microcomputer 1, the pin 1 of the connector J1 is connected to the pin 2 of the nand gate conversion chip U1 and the pin 1 of the signal amplification chip U2 in the driving unit S3, the pin 2 of the connector J1 is connected to the pin 4 of the nand gate conversion chip U1 and the pin 4 of the signal amplification chip U2 in the driving unit S3, and the pin 3 of the connector J1 is grounded; the logic conversion unit S2 comprises a NAND gate conversion chip U1, pins 1, 5 and 8 of the NAND gate conversion chip U1 are connected with the positive electrode of a power supply, a pin 7 of the NAND gate conversion chip U1 is connected with the ground, pins 3 and 6 of the NAND gate conversion chip U1 are respectively connected with pins 2 and 3 of a signal amplification chip U2 in a driving unit S3, the driving unit S3 comprises a signal amplification chip U2, a pin 5 of the signal amplification chip U2 is connected with the ground, a pin 6 is connected with the positive electrode of the power supply, a capacitor C is connected between the pin 5 and the pin 6, and the capacitor C plays a role in filtering; pins 10, 9, 8 and 7 of a signal amplification chip U2 are respectively connected with pins 2, 3, 4 and 5 of a connector S which is connected with a pin of a stepping motor (3) in a signal output unit S4, a pin 1 of the connector S in the signal output unit S4 is connected with the positive electrode of a power supply, the connector P is externally connected with a power supply, wherein the pin 1 is connected with a power supply of a circuit board, the pin 2 is connected with a voltage of +6 to +12V for supplying power to the stepping motor (3), and the pin 3 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710545327.0A CN107390574B (en) | 2017-07-06 | 2017-07-06 | Controllable mechanical shutter light blocking device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710545327.0A CN107390574B (en) | 2017-07-06 | 2017-07-06 | Controllable mechanical shutter light blocking device |
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| CN107390574A CN107390574A (en) | 2017-11-24 |
| CN107390574B true CN107390574B (en) | 2020-09-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6269226B1 (en) * | 1993-08-10 | 2001-07-31 | Canon Kabushiki Kaisha | Shutter device of camera |
| CN101634792A (en) * | 2008-07-25 | 2010-01-27 | 中国科学院空间科学与应用研究中心 | Device and method for mechanically controlling exposure time |
| CN102540633A (en) * | 2011-12-27 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Quick opening and retaining control system for electromagnetic mechanical shutter |
| CN103336405A (en) * | 2013-07-09 | 2013-10-02 | 中国科学院光电技术研究所 | Improved shutter time delay measuring system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686022B (en) * | 2008-09-24 | 2012-03-28 | 无锡华润矽科微电子有限公司 | Drive circuit of ultrasonic motor |
| CN102244738B (en) * | 2010-05-13 | 2013-11-06 | 中国科学院西安光学精密机械研究所 | Electric control method and system for curtain shutter |
| CN106685274A (en) * | 2016-12-30 | 2017-05-17 | 天水七四九电子有限公司 | Brushless direct current motor control circuit |
-
2017
- 2017-07-06 CN CN201710545327.0A patent/CN107390574B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6269226B1 (en) * | 1993-08-10 | 2001-07-31 | Canon Kabushiki Kaisha | Shutter device of camera |
| CN101634792A (en) * | 2008-07-25 | 2010-01-27 | 中国科学院空间科学与应用研究中心 | Device and method for mechanically controlling exposure time |
| CN102540633A (en) * | 2011-12-27 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Quick opening and retaining control system for electromagnetic mechanical shutter |
| CN103336405A (en) * | 2013-07-09 | 2013-10-02 | 中国科学院光电技术研究所 | Improved shutter time delay measuring system |
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Inventor after: Weng Kanxing Inventor after: Wu Bin Inventor after: Li Kai Inventor after: Cheng Bing Inventor after: Zhu Dong Inventor after: Zhou Yin Inventor before: Li Kai Inventor before: Cheng Bing Inventor before: Weng Kanxing Inventor before: Zhu Dong Inventor before: Zhou Yin |
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Application publication date: 20171124 Assignee: FOSHAN YAOYE TECHNOLOGY Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2024980000087 Denomination of invention: A controllable mechanical shutter light blocking device Granted publication date: 20200901 License type: Common License Record date: 20240104 |