CN113050491A - Large-scale outdoor astronomical telescope cover switch control system - Google Patents
Large-scale outdoor astronomical telescope cover switch control system Download PDFInfo
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- CN113050491A CN113050491A CN202110294757.6A CN202110294757A CN113050491A CN 113050491 A CN113050491 A CN 113050491A CN 202110294757 A CN202110294757 A CN 202110294757A CN 113050491 A CN113050491 A CN 113050491A
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- switch
- door
- control
- cabin door
- cylinder cover
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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
- 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)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The embodiment of the invention discloses a large-scale outdoor astronomical telescope cylinder cover switch control system. The cylinder cover adopts a double-cabin door design, and the system comprises a power supply, a standby power supply, a motor, a programmable logic control unit, a control switch, a three-pole double-throw switch, an anti-reverse switch, a position sensor, a speed reduction transmission device, a thermal relay and an emergency stop switch. The invention realizes normal opening and closing of the cabin door, effectively prevents misoperation, reduces collision, protects the motor and prolongs the service life of the telescope cylinder cover switch system through the cabin door state control part, the position sensor, the speed reduction transmission device, the control switch, the thermal relay, the emergency stop switch and the three-pole double-throw switch.
Description
Technical Field
The invention belongs to the field of electric control of a telescope cabin door, and particularly relates to a switch control system for a barrel cover of a large outdoor astronomical telescope.
Background
Large outdoor astronomical telescopes need to be operated outdoors for a long time, and are inconvenient to move and store indoors due to large sizes, so that the large outdoor astronomical telescopes need to be exposed to the sun, wind, sand, rain and snow for a long time. However, the telescope window and the primary mirror have high requirements on the environment, are easy to wear after being exposed in a severe natural environment for a long time, further deteriorate, damage and pollution to the lens can be caused, and the service life is shortened, so that the front door is essential for installing a large outdoor astronomical telescope.
The front door of the existing large outdoor astronomical telescope tube is mostly manually controlled, the protection to the motor in an automatic control system is insufficient, the service life of the motor is easily reduced, and the use of the whole telescope is influenced.
Disclosure of Invention
Based on the technical scheme, the invention provides a large-scale outdoor astronomical telescope cylinder cover switch control system aiming at the problem of manually opening and closing a front door of a lens cylinder, and the system can realize automatic opening and closing of the cylinder cover of the outdoor astronomical telescope and effectively protect a cabin door system through electric control and various protection measures, so that the service life is prolonged.
A large-scale outdoor astronomical telescope cylinder cover switch control system comprises a cylinder cover, a power supply, a control motor, a programmable logic control unit, a control switch, a three-pole double-throw switch, a position sensor, a speed reduction transmission device and a door shaft; the barrel cover adopts a double-cabin door design; the control switch is arranged in front of the three-pole double-throw switch; the speed reduction transmission device is arranged between the cabin door and the motor.
Furthermore, the double-cabin door is designed to press the right cabin door for the left cabin door, so that the outdoor waterproof design is realized. In the automatic mode, when the door is opened, the left cabin door can be opened firstly, and when the left cabin door is in place, the right cabin door can be opened. The closing sequence is opposite, the right cabin door can be closed firstly, and the left cabin door can be closed after the right cabin door is in place. The telescope tube is waterproof, the telescope is protected, a tube cover control system is protected, and the service life of the large outdoor astronomical telescope is prolonged.
Further, the programmable logic control unit can realize control logic through PLC or FPGA programming.
Further, a standby power supply is included to provide a source of energy for special situations.
Furthermore, the reverse circuit protection circuit also comprises a reverse prevention switch, so that the reverse circuit is ensured to be in a normally open state.
Furthermore, the emergency stop device also comprises an emergency stop switch, and the motor is stopped in time by utilizing the manual emergency stop switch in emergency.
Further, 380V industrial electricity supplies power for the whole control system.
Furthermore, the position sensors are preferably metal sensors, and each group of position sensors consists of two metal proximity switch sensors and are respectively positioned at the contact position of the front edge of the cabin door and the bottom end of the cabin when the cabin door is closed and the contact position of the front edge of the cabin door and the side wall of the cabin when the cabin door is opened. When the metal cabin door approaches the position sensor, the metal cabin door sends an in-place signal to the cabin door state control part, and outputs a control instruction to stop the cabin door.
Furthermore, angle encoders are further mounted on the two door shafts of the cabin door, whether the cabin door is opened and closed in place is judged again by using the opening and closing angle encoders, and whether the telescopic cabin door is opened and closed in place is judged by using the mechanical sensor and the electromagnetic sensor simultaneously in the mode, so that double insurance is formed.
Furthermore, a speed reduction transmission device is connected between the cabin door and the motor, so that the rotating force of the door shaft is increased, the door is guaranteed to be opened easily, the load of the motor is reduced, the current of the motor is prevented from being too large, and the service life is prolonged.
Furthermore, each control motor is controlled by a three-pole double-throw switch respectively, a circuit diagram of a large-scale outdoor astronomical telescope cylinder cover switch control system is provided, KC1 and KO1 are three-pole double-throw switch control motors M1, KC2 and KO2 are three-pole double-throw switch control motors M2, and KO1 and KO2 state bits respectively control motors M1 and M2 to rotate forwards to control the opening of double doors; the KC1 and KC2 status bits control the motors M1 and M2 to reversely rotate respectively, and control the double-cabin door to close. The three-pole double-throw switch ensures that the control motor can only be in a forward rotation state or a reverse rotation state at the same time, prevents the motor from receiving two command signals of the switch at the same time, prevents misoperation and effectively prolongs the service life of the motor.
The three-pole double-throw switch is preferably a four-way alternating current contact relay, three ways of the three-way alternating current contact relay are used for connecting a three-phase power supply to the motor, one way of the three ways of the three-pole double-throw switch is set as a normally closed contact, the three ways of the three-way alternating current contact relay are used for keeping the cabin door switch (on) alternating current relay normally off in the cabin door opening (closing) process and not.
Furthermore, control switches KZ 1-KZ 4 are arranged in front of the three-pole double-throw switch, the switches are normally open, the current cabin door execution instruction is judged through the programmable logic unit, one path of the execution instruction is controlled to be closed, and the other three paths are kept to be open, so that misoperation is prevented.
Furthermore, the front end of the control motor is also connected with a thermal relay, as shown in a circuit diagram of a large-scale outdoor astronomical telescope cylinder cover switch control system in figure 2, thermal relays KH1 and KH2 are respectively connected between the front ends of the motors M1 and M2 and respective contacts of three-pole double-throw switches KO1, KC1, KO2 and KC2, when the current is overlarge in the working process of the motors, the thermal relay is automatically disconnected, the motors stop working and are used for protecting the motors, the service life is prolonged, and a telescope cylinder cover control system is protected.
Furthermore, a manual emergency stop switch is arranged in front of the three-pole double-throw switch group, and the cylinder cover can be emergently stopped when an accident occurs. Like the large-scale outdoor astronomical telescope tube cover switch control system circuit diagram of fig. 2, manual scram switch RS is connected before thermal relay KH1 and KH2, when telescope front door control system breaks down or other reasons need control system stop action immediately, utilizes manual scram switch RS to cut off the motor power supply, realizes the protection to telescope tube cover switch control system.
The invention has the beneficial effects that: 1) according to the invention, the automatic opening and closing of the large-scale outdoor astronomical telescope cylinder cover are realized through the position sensor and the programmable logic control unit, so that the working efficiency of the cylinder cover is improved, and the probability of damage to the telescope cylinder cover caused by misoperation and excessive opening and closing is reduced.
2) The motor is effectively protected by the control switch, the three-pole double-throw switch, the anti-reversion switch, the thermal relay, the speed reduction transmission device and the manual emergency stop switch, so that the service life of the cylinder cover switch control system of the large-scale outdoor astronomical telescope is prolonged.
3) The two door shafts of the cabin door are also provided with angle encoders, the opening and closing of the cabin door are judged again by using the opening and closing angle encoders, and the opening and closing of the telescope cabin door are judged by using the mechanical sensor and the electromagnetic sensor simultaneously in this way to form double insurance.
Drawings
FIG. 1 is a block diagram of a large outdoor astronomical telescope cover switch control system;
fig. 2 is a circuit diagram of a large-scale outdoor astronomical telescope cover switch control system.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
A large-scale outdoor astronomical telescope cylinder cover switch control system comprises a cylinder cover, a power supply, a control motor, a programmable logic control unit, a control switch, a three-pole double-throw switch, a position sensor, a speed reduction transmission device and a door shaft; the barrel cover adopts a double-cabin door design; the control switch is arranged in front of the three-pole double-throw switch; the speed reduction transmission device is arranged between the cabin door and the motor.
The double-cabin door is designed to press the right cabin door for the left cabin door, so that outdoor waterproof design is realized. In the automatic mode, when the door is opened, the left cabin door can be opened firstly, and when the left cabin door is in place, the right cabin door can be opened. The closing sequence is opposite, the right cabin door can be closed firstly, and the left cabin door can be closed after the right cabin door is in place. The telescope tube is waterproof, the telescope is protected, a tube cover control system is protected, and the service life of the large outdoor astronomical telescope is prolonged.
The programmable logic control unit can realize control logic through PLC or FPGA programming.
And a standby power supply is also included to provide a source of energy for special situations. The reverse circuit protection circuit also comprises a reverse switch for ensuring that the reverse circuit is in a normally open state. The emergency stop device also comprises an emergency stop switch, and the motor is stopped in time by utilizing the manual emergency stop switch in emergency. 380V industrial electricity is used for supplying power for the whole control system.
The position sensors are preferably metal sensors, and each group of position sensors consists of two metal proximity switch sensors and are respectively positioned at the contact position of the front edge of the cabin door and the bottom end of the cabin box when the cabin door is closed and the contact position of the front edge of the cabin door and the side wall of the cabin box when the cabin door is opened. When the metal cabin door approaches the position sensor, the metal cabin door sends an in-place signal to the cabin door state control part, and outputs a control instruction to stop the cabin door.
The two door shafts of the cabin door are also provided with angle encoders, the opening and closing of the cabin door are judged again by using the opening and closing angle encoders, and the opening and closing of the telescope cabin door are judged by using the mechanical sensor and the electromagnetic sensor simultaneously in this way to form double insurance.
Be connected with reduction gearing between above-mentioned hatch door and the motor, increase the door-hinge and rotate strength, guarantee that the door is light to be opened, reduce motor load, prevent that motor current is too big, increase of service life.
Each control motor is respectively controlled by a three-pole double-throw switch, as shown in a circuit diagram of a control system of a cylinder cover switch of the large-scale outdoor astronomical telescope in figure 2, KC1 and KO1 are three-pole double-throw switch control motors M1, KC2 and KO2 are three-pole double-throw switch control motors M2, and KO1 and KO2 state bits respectively control the motors M1 and M2 to rotate forwards to control the opening of double doors; the KC1 and KC2 status bits control the motors M1 and M2 to reversely rotate respectively, and control the double-cabin door to close. The three-pole double-throw switch ensures that the control motor can only be in a forward rotation state or a reverse rotation state at the same time, prevents the motor from receiving two command signals of the switch at the same time, prevents misoperation and effectively prolongs the service life of the motor.
The three-pole double-throw switch is preferably a four-way alternating current contact relay, three ways of the three-way alternating current contact relay are used for connecting a three-phase power supply to the motor, one way of the three ways of the three-pole double-throw switch is set as a normally closed contact, the three ways of the three-way alternating current contact relay are used for keeping the cabin door switch (on) alternating current relay normally off in the cabin door opening (closing) process and not.
Furthermore, control switches KZ1 to KZ4 are arranged in front of the three-pole double-throw switch, as shown in fig. 2, the switch is normally open, a current cabin door execution instruction is judged through the programmable logic unit, one path of the control switch for controlling the execution instruction is closed, and the other three paths are kept open, so that misoperation is prevented.
Furthermore, the front end of the control motor is also connected with a thermal relay, as shown in a circuit diagram of a large-scale outdoor astronomical telescope cylinder cover switch control system in figure 2, thermal relays KH1 and KH2 are respectively connected between the front ends of the motors M1 and M2 and respective contacts of three-pole double-throw switches KO1, KC1, KO2 and KC2, when the current is overlarge in the working process of the motors, the thermal relay is automatically disconnected, the motors stop working and are used for protecting the motors, the service life is prolonged, and a telescope cylinder cover control system is protected.
Furthermore, a manual emergency stop switch is arranged in front of the three-pole double-throw switch group, and the cylinder cover can be emergently stopped when an accident occurs. Like the large-scale outdoor astronomical telescope tube cover switch control system circuit diagram of fig. 2, manual scram switch RS is connected before thermal relay KH1 and KH2, when telescope front door control system breaks down or other reasons need control system stop action immediately, utilizes manual scram switch RS to cut off the motor power supply, realizes the protection to telescope tube cover switch control system.
The specific working principle is as follows: when a telescope cover opening or closing instruction is acquired, a first position state of the telescope cover acquired by the position sensor at the moment is firstly judged, and the first position state can exist in three conditions: the system comprises an off-in-place state, an on-in-place state and a non-in-place state; for example, in one case, whether the instruction information of the door closing instruction in the non-in-place state is consistent with the state of the telescope cylinder cover indicated in the non-in-place state is judged. If the command is on (off), judging whether the cabin door is in an off (on) state or a non-in-place state at the moment. If the command is in a closed (on) state, the command is executed, and if the command is in the open (off) state, a prompt of 'the cabin door is in place and misoperation is possible to exist' is fed back; if the telescope cylinder cover is in the non-in-place state, judging whether the received instruction information in the state is consistent with the state of the telescope cylinder cover indicated by the non-in-place state, if not, outputting a motor control instruction to trigger a motor to act, and controlling the telescope cylinder cover to change the position state according to new instruction information; if the position sensor and the angle encoder are consistent, the command is continuously executed until the position sensor and the angle encoder are in place, and finally a double-insurance feedback position state is formed by the position sensor and the angle encoder.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A large-scale outdoor astronomical telescope cover switch control system, its characterized in that includes: the device comprises a cylinder cover, a power supply, a control motor, a programmable logic control unit, a control switch, a three-pole double-throw switch, a position sensor, a speed reduction transmission device and a door shaft; the barrel cover adopts a double-cabin door design; the control switch is arranged in front of the three-pole double-throw switch; the speed reduction transmission device is arranged between the cabin door and the motor.
2. A large outdoor astronomical telescope cylinder cover switch control system according to claim 1, wherein said position sensor is preferably a metal sensor.
3. The system of claim 2, wherein the position sensor comprises two metal proximity switch sensors respectively located at a position where the front edge of the hatch door contacts the bottom end of the container when the hatch door is closed and at a position where the front edge of the hatch door contacts the sidewall of the container when the hatch door is opened.
4. The system for controlling the opening and closing of the cylinder cover of the large-scale outdoor astronomical telescope according to any one of claims 1 to 3, wherein the two door shafts of the chamber door are further provided with angle encoders, and the opening and closing angle encoders are used for judging whether the chamber door is opened or closed in place again.
5. The system according to any one of claims 1 to 3, wherein the double doors are designed to press the right door against the left door, the left door presses the right door, the door opening sequence is that the left door is opened first and then the right door is opened, and the door closing sequence is reversed.
6. The system of claim 2, wherein the programmable logic control unit implements control logic by PLC or FPGA programming.
7. The system of claim 1, wherein each control motor is controlled by a three-pole double-throw switch.
8. A large outdoor astronomical telescope cylinder cover switch control system according to claim 7, wherein the three-pole double-throw switch is preferably a four-way AC contact relay, wherein three ways are used for connecting a three-phase power supply to the motor, and one way is set as a normally closed contact.
9. The switch control system of the cylinder cover of the large outdoor astronomical telescope according to any one of claims 6 to 8, wherein the front end of the control motor is further connected with a thermal relay.
10. A large outdoor astronomical telescope cover switch control system according to any one of claims 6 to 8, wherein a manual emergency stop switch is added before the three-pole double-throw switch group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294757.6A CN113050491A (en) | 2021-03-19 | 2021-03-19 | Large-scale outdoor astronomical telescope cover switch control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294757.6A CN113050491A (en) | 2021-03-19 | 2021-03-19 | Large-scale outdoor astronomical telescope cover switch control system |
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| CN113050491A true CN113050491A (en) | 2021-06-29 |
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| CN202110294757.6A Pending CN113050491A (en) | 2021-03-19 | 2021-03-19 | Large-scale outdoor astronomical telescope cover switch control system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971620A (en) * | 1974-05-16 | 1976-07-27 | Gros-Ite Industries, Inc. | Telescope assemblies |
| US6384969B1 (en) * | 1999-10-28 | 2002-05-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Telescope and binoculars |
| CN1354841A (en) * | 1998-10-26 | 2002-06-19 | 米德仪器公司 | Telescope system having intelligent motor controller |
| CN201364409Y (en) * | 2008-05-09 | 2009-12-16 | 施华洛世奇光学公司 | Optical instrument in forms of telescope, aiming device or optical aiming device |
| CN102495465A (en) * | 2011-12-12 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Novel foldable electric lens cover applicable to polar axis type telescope |
| CN106773004A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | Heavy caliber altazimuth telescope collapsible formula dust guard |
| DE202017001311U1 (en) * | 2016-10-12 | 2017-07-14 | Josef Kluy | Hopper lid - telescopic lid |
| CN208888475U (en) * | 2018-11-02 | 2019-05-21 | 华夏海洋能源工程（天津）股份有限公司 | Front door opening and closing mechanism of telescope |
| CN111638597A (en) * | 2020-07-06 | 2020-09-08 | 中国科学院国家天文台长春人造卫星观测站 | Photoelectric telescope dust cover based on special-shaped spring driving and memory alloy wire braking |
-
2021
- 2021-03-19 CN CN202110294757.6A patent/CN113050491A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971620A (en) * | 1974-05-16 | 1976-07-27 | Gros-Ite Industries, Inc. | Telescope assemblies |
| CN1354841A (en) * | 1998-10-26 | 2002-06-19 | 米德仪器公司 | Telescope system having intelligent motor controller |
| US6384969B1 (en) * | 1999-10-28 | 2002-05-07 | Asahi Kogaku Kogyo Kabushiki Kaisha | Telescope and binoculars |
| CN201364409Y (en) * | 2008-05-09 | 2009-12-16 | 施华洛世奇光学公司 | Optical instrument in forms of telescope, aiming device or optical aiming device |
| CN102495465A (en) * | 2011-12-12 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Novel foldable electric lens cover applicable to polar axis type telescope |
| DE202017001311U1 (en) * | 2016-10-12 | 2017-07-14 | Josef Kluy | Hopper lid - telescopic lid |
| CN106773004A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | Heavy caliber altazimuth telescope collapsible formula dust guard |
| CN208888475U (en) * | 2018-11-02 | 2019-05-21 | 华夏海洋能源工程（天津）股份有限公司 | Front door opening and closing mechanism of telescope |
| CN111638597A (en) * | 2020-07-06 | 2020-09-08 | 中国科学院国家天文台长春人造卫星观测站 | Photoelectric telescope dust cover based on special-shaped spring driving and memory alloy wire braking |
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Application publication date: 20210629 |
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