Method and system for controlling an oil pressure open dome

Abstract

The present application relates to the technical field of intelligent control of astronomical domes, and specifically provides a control method and a control system for an oil pressure open dome, wherein when a telescope is in an observation state (a dome protective cover is completely opened), if all meteorological data are in a safe interval, heating of oil pressure support rods of the oil pressure open dome is stopped; if one item of meteorological data is in an alarm interval, whether to heat the oil pressure support rods of the oil pressure open dome is determined according to air temperature; and if one item of meteorological data is in a dangerous interval, the dome protective cover is closed. The method can be applied to a night observation telescope, intelligent control of the dome protective cover is realized, the telescope is fully protected, and resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent control of astronomical domes, and in particular provides a control method and a control system for a hydraulic open dome. Background Art

[0002] Optoelectronic telescopes are precision observation and measurement instruments, comprising subsystems such as the optical system, focusing system, derotation system, imaging system, and turntable control system. Telescopes are typically used in non-extreme weather conditions, such as clear skies, calm winds, or light breezes. However, strong winds, rain, and dust storms are common, which can easily corrode and damage telescopes. Once installed, telescopes cannot be disassembled or moved, so each telescope is typically protected by a dome to prevent adverse weather conditions.

[0003] Traditional visible light telescopes are mainly used for nighttime observations. Although in recent years telescopes based on the infrared band that can be used for daytime observations have gradually become the key research direction of scientific research institutions at home and abroad, due to the high detection capability and positioning accuracy of visible light telescopes, they are still an irreplaceable type of observation equipment for scientific research institutions such as observatories and observation stations. For this type of telescope, it is usually equipped with a fixed base and a dome with a skylight that can be fully opened or closed, that is, an open dome. The diameter of the open dome is usually several times the diameter of the telescope. Large open domes require the use of hydraulic support rods to open or close the dome protective cover. For example, an observatory built a 10-meter diameter hydraulic open dome for a 2.5-meter aperture telescope.

[0004] The hydraulic oil in the hydraulic strut will become viscous or solidify when the temperature is too low. When the hydraulic open dome is opening or closing the dome protective cover, the temperature of the hydraulic oil in the hydraulic strut needs to be higher than its required minimum operating temperature. Therefore, it is necessary to configure electric heating for the hydraulic strut and control the electric heating to heat the hydraulic strut when necessary. Through heat conduction, the hydraulic oil in the hydraulic strut is heated to above the minimum operating temperature to ensure that the dome protective cover can be opened or closed smoothly.

[0005] Unmanned astronomical observations throughout the entire process have been a major research focus in recent years during the development, deployment, and operation of telescopes. Intelligent control of hydraulic open domes is a crucial component in automating the observation process for large electro-optical telescopes. This is especially true for electro-optical telescopes used for nighttime observations. If the design is not well-designed, the dome cover may not be opened in time before the start of an observation, resulting in data loss. Alternatively, the cover may not be closed in time at the end of an observation, leading to prolonged oversaturation of the visible light camera and even damage. Hydraulic open domes require electric heating for a period of time in low-temperature environments to ensure proper function of the hydraulic struts. If the electric heating components are operating continuously, significant power consumption is generated. According to statistics, a single telescope at one observatory with a hydraulic open dome can incur a monthly electricity bill increase of tens of thousands of yuan if the electric heating is constantly running in winter. Therefore, intelligent control systems for hydraulic open domes are essential for scientific experimentation, telescope protection, energy conservation, emissions reduction, and economic benefits. Summary of the Invention

[0006] To address these issues, the present invention provides a control method and control system for a hydraulically operated open dome. This method intelligently controls the dome's cover's closing based on meteorological data and the dome's cover's status. This method is applicable to nighttime telescopes, enabling intelligent control of the dome's cover, fully protecting the telescope and conserving resources.

[0007] The control method and control system of the hydraulic open dome provided by the present invention controls the opening or closing of the dome by telescoping the hydraulic support rod, including:

[0008] Set the safety interval, warning interval and danger interval of meteorological data, and calculate the current solar pitch angle ,like , then execute the daytime control process, if , then execute the night control process, where Indicates the maximum solar pitch angle of the telescope at night;

[0009] The daytime control process is:

[0010] If at least any one of the meteorological data is not within the safe range, the heating of the hydraulic strut is stopped;

[0011] If the meteorological data are all within the safe range, calculate the maximum solar pitch angle when the sun sets to the telescope for nighttime observation. Time :like , then start heating the hydraulic support rod; if , then open the dome protective cover; Among them, Indicates the current time, Indicates the time required to heat the hydraulic strut to the minimum operating temperature;

[0012] The night control process is:

[0013] When the dome protective cover is not open: if at least one of the meteorological data is not within the safe range, the hydraulic strut will stop heating; if all the meteorological data are within the safe range, the hydraulic strut will start heating, and when the hydraulic strut heating time reaches When the dome is opened,

[0014] When the dome cover is open: calculate the time from the sun rising to the maximum solar pitch angle for nighttime observation of the telescope Corresponding time ,when When the oil pressure rod is heated, , close the dome protection cover; when When the meteorological data are all in the safe range, the oil pressure support rod is stopped from being heated; if at least any one of the meteorological data is not in the safe range, the oil pressure support rod is started to be heated; if at least any one of the meteorological data is in the dangerous range, the dome protective cover is closed.

[0015] Preferably, the meteorological data includes humidity, wind speed, cloud cover, and rain and snow.

[0016] Preferably, the safe range of humidity is , the warning interval is The danger zone is ; The safe range of wind speed is , the warning interval is The danger zone is ; The safe range of cloud cover is , the warning interval is The danger zone is The safety zone for rain and snow is "no rain and snow", and the warning zone and danger zone are both "rain and snow". Indicates the safe value of humidity, Indicates the dangerous value of humidity, Indicates the safe value of wind speed, Indicates the dangerous value of wind speed, Indicates the safe value of cloud cover, Indicates the dangerous value of cloud cover.

[0017] A control system for a hydraulic open dome, used to implement a control method for the hydraulic open dome, comprising: a dome protection cover, a hydraulic support rod, an electric heating, a meteorological instrument, and an intelligent control system;

[0018] The meteorological instrument provides meteorological data to the intelligent control system, and the intelligent control system controls the electric heating to start heating the hydraulic support rod or stop heating the hydraulic support rod according to the meteorological data; the intelligent control system controls the dome protective cover to open or close according to the meteorological data.

[0019] Preferably, a dome controller is further included, and the intelligent control system controls the electric heating to start heating the hydraulic support rod or stop heating the hydraulic support rod through the dome controller; the intelligent control system controls the dome protective cover to open or close through the dome controller.

[0020] Preferably, the intelligent control system can be arranged inside or outside the oil pressure open dome.

[0021] Preferably, the solar pitch angle is calculated by an intelligent control system , the sun sets to the maximum solar pitch angle for nighttime observations with the telescope Time , The time required to heat the hydraulic support rod to the minimum operating temperature As the sun rises to the maximum solar pitch angle for nighttime observations by the telescope Corresponding time .

[0022] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0023] The control method of the present invention intelligently controls the dome cover's closing and closing based on meteorological data and the dome cover's status. Before the dome cover needs to be opened or closed, the electric heating system is pre-activated to heat the hydraulic oil in the hydraulic struts. This ensures timely control of the dome cover, preventing environmental damage to the telescope during the dome cover's movement. This improves the protective capability and efficiency of the hydraulic open dome, further protecting the telescope. When the dome cover is not needed, the electric heating system is kept inactive, reducing power consumption, conserving resources, and avoiding costly waste.

[0024] The method of the present invention effectively improves the automation control level of the open dome. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow chart of a control method for a hydraulic open dome according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of daytime control of an oil-pressure open dome provided in accordance with an embodiment of the present invention;

[0027] Figure 3 is a nighttime control flow chart of an oil pressure open dome provided in accordance with an embodiment of the present invention;

[0028] Figure 4A control system schematic diagram of an oil pressure open dome is provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not constitute a limitation on the present application. In different embodiments, similar elements are associated with similar element labels. In the following embodiments, many details are described in order to make the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials or methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core part of the present application being overwhelmed by too much description, and it is not necessary for those skilled in the art to understand the related operations in detail according to the description in the specification and general technical knowledge in the art.

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other to form various embodiments without conflict. Meanwhile, the steps or actions in the method description can also be sequentially adjusted or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for the purpose of clearly describing a certain embodiment, and do not mean a necessary sequence, unless otherwise stated that a certain sequence must be followed.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] like Figure 1 As shown, an embodiment of the present invention provides a control method for a hydraulic open dome, wherein the hydraulic open dome uses a hydraulic support rod to open or close the dome protective cover. The specific contents of the control method for the hydraulic open dome are as follows:

[0035] The hydraulic open dome closes or opens the dome protection cover according to the weather conditions, thereby protecting the telescope. Therefore, different weather conditions need to be divided. In the embodiment of the present invention, the range of meteorological data adopted is defined as the humidity, wind speed, cloud cover and rain and snow of the external environment, and each type of meteorological data is divided into three intervals, namely, the safe interval, the warning interval and the dangerous interval. Specifically, in the embodiment of the present invention, the above meteorological data and the corresponding interval values ​​are set as follows: the safe interval of humidity is , the warning interval is The danger zone is ; The safe range of wind speed is , the warning interval is The danger zone is ; The safe range of cloud cover is , the warning interval is The danger zone is The safety zone for rain and snow is "no rain and snow", and the warning zone and danger zone are both "rain and snow". Indicates the safe value of humidity, Indicates the dangerous value of humidity, Indicates the safe value of wind speed, Indicates the dangerous value of wind speed, Indicates the safe value of cloud cover, Indicates the dangerous value of cloud cover.

[0036] The values ​​of each interval endpoint are based on the meteorological conditions suitable for working when the telescope is calibrated at the factory. For example, when the telescope is calibrated at the factory, it needs to be calibrated at a humidity below , wind speed is lower than , cloud cover below and no rain and snow, the value of different telescopes is different, but it is a known value, and the embodiment of the application is respectively 、 、 and no rain and snow. The end value of the safety interval is based on the actual situation of the telescope, the maximum value of humidity and wind speed is to ensure that the telescope will not be damaged, and the maximum value of cloud cover is to ensure that the telescope can be normally observed.

[0037] The significance of setting the meteorological data interval group is that when the telescope is in the observation state (the dome protection cover is completely opened), if all the meteorological data is in the safety interval, the oil pressure support rod of the heated oil pressure open dome is stopped, if a certain item of meteorological data is in the warning interval, it is decided whether to heat the oil pressure support rod of the open dome according to the air temperature; if a certain item of meteorological data is in the danger interval, the dome protection cover is closed.

[0038] Because the working place of the telescope is different, the climate is different, which leads to different meteorological data, therefore, the meteorological data should be determined according to the climate characteristics of the working place of the telescope, and is not limited to the above four kinds, if necessary, temperature, PM2.5, PM10 and the like can be increased, and can also be reduced.

[0039] The visible light band telescope usually observes at night, and the observable period is usually expressed as the sun at a certain pitch angle and below, that is , wherein represents the sun pitch angle, represents the maximum sun pitch angle of the telescope night observation. The sun pitch angle , can be calculated by the site coordinates and time information, and the calculation method has an open source code. The maximum sun pitch angle of the telescope night observation is obtained by calibration during the installation and deployment of the telescope by the telescope manufacturer, and the final calibration value is related to factors such as the topography, latitude and longitude of the telescope site, and the optical system of the telescope, and is not a unified value. The calibration method is as follows:

[0040] The exposure time used for the regular observation of the telescope is set as .

[0041] On a clear night, when the sun just falls below the horizon, the sun pitch angle at this time is recorded as , the pitch angle of the telescope is turned to a higher position (such as a pitch angle greater than 80°), the camera exposure time is set to , and the image is collected through the camera. From the first frame of unsaturated image generated by the camera, the average value of the pixel gray value of each frame of image and the sun pitch angle at the exposure time of the frame of image are recorded, and the recording is continuous for 1 hour. The minimum value of the sequence of the average value of the pixel gray value of the image is recorded as , according to time sequence, traverses the image pixel gray value average sequence, the first occurrence of the camera acquisition of a frame image pixel gray value average satisfies the condition , wherein represents the coefficient and , for example , the frame image exposure time corresponding to the sun elevation angle is recorded as .

[0042] In the clear morning, record the sun elevation angle when the sun is about to start from below the horizon . The following judgment is made: if , then , otherwise .

[0043] If the terrain around the telescope site changes greatly, it can be periodically recalibrated.

[0044] The specific control process of the oil pressure open dome is as follows:

[0045] Calculate the current time sun elevation angle , if , it means that the sun elevation angle is greater than the maximum sun elevation angle of the telescope night observation, then execute the daytime control process, if , it means that the sun elevation angle is not greater than the maximum sun elevation angle of the telescope night observation, execute the night control process.

[0046] Attached Figure 1 Second-level timer trigger refers to the process triggered by the second-level timer of the embodiment, which triggers the process once a second or several seconds through the second-level timer, and outputs the corresponding current time when triggered, combined with the sun elevation angle calculated at the site of the telescope.

[0047] As shown in Figure 2 , the daytime control process is:

[0048] After executing the daytime control process, the meteorological data at this time is judged:

[0049] If at least any one of the meteorological data is not in the safe interval, stop heating the oil pressure support rod;

[0050] If the meteorological data is in the safe interval, calculate the time when the sun falls to the maximum sun elevation angle of the telescope night observation : if , start heating the oil pressure support rod; if , open the dome protection cover; wherein Indicates the current time. The hydraulic oil in the hydraulic strut will become viscous or solidified when the temperature is too low. When the hydraulic open dome is opening or closing the dome protective cover, the temperature of the hydraulic oil in the hydraulic strut needs to be higher than its required minimum operating temperature. Indicates the time required to heat the hydraulic strut to the minimum operating temperature.

[0051] like Figure 3 As shown, the night control process is:

[0052] After the night control process is executed, the time required for the hydraulic strut to heat up at the current temperature is calculated based on the temperature. , judge the status of the dome protective cover at this time:

[0053] When the dome protective cover is not open: if at least one of the meteorological data is not within the safe range, the hydraulic strut will stop heating; if all the meteorological data are within the safe range, the hydraulic strut will start heating, and when the hydraulic strut heating time reaches , open the dome cover.

[0054] When the dome cover is open, calculate the time from the sun rising to the maximum solar pitch angle for nighttime observation of the telescope. Corresponding time , make the following judgment:

[0055] when When the oil pressure rod is heated, , close the dome protection cover.

[0056] when When the meteorological data are all in the safe range, the oil pressure support rod is stopped from being heated; if at least any one of the meteorological data is not in the safe range, the oil pressure support rod is started to be heated; if at least any one of the meteorological data is in the dangerous range, the dome protective cover is closed.

[0057] Especially, when When , it indicates that the time required for heating the hydraulic support rod at the current temperature is 0, and the hydraulic support rod does not need to be heated. In this case, the hydraulic support rod is not heated.

[0058] To implement the above-mentioned control method for the hydraulic open dome, an embodiment of the present invention further provides a control system for the hydraulic open dome, comprising a hydraulic open dome, a meteorological instrument, and an intelligent control system. The hydraulic open dome includes electric heating, hydraulic support rods, a dome controller, and a dome protective cover.

[0059] The hydraulic open dome is responsible for protecting the telescope. When the telescope is observing, the dome protection cover of the hydraulic open dome is fully opened, and the telescope can , pitch angle There is no obstruction in the observation range. When the telescope is in the non-observation period or the meteorological data does not meet the observation conditions, the dome protective cover can be completely closed to protect the telescope. Figure 4 The dome protective cover in the figure is for illustration only and does not mean that the actual hydraulic open dome has only two dome protective covers, nor does it mean that the actual dome protective cover is completely above the telescope.

[0060] The dome controller is connected to the hydraulic struts. It controls the extension and retraction of the hydraulic struts, thereby controlling the closing and opening of the dome cover. The hydraulic oil inside the hydraulic struts can become viscous or solidify in low temperatures, preventing the dome cover from closing or opening. Figure 4 The two hydraulic struts marked in the figure are for reference only and do not mean that a real hydraulic open dome has only two hydraulic struts. The specific number of hydraulic struts shall be designed and installed by the dome manufacturer based on actual conditions.

[0061] The electric heat trace is spatially connected to the hydraulic struts. If the dome controller sets the electric heat trace to active, it heats itself and transfers heat through the hydraulic struts to the hydraulic oil, heating it to a working state. If the dome controller sets the electric heat trace to inactive, it stops heating, eliminating energy loss. Typically, dome manufacturers provide a pre-calibrated function relationship between electric heat trace heating time and air temperature. The intelligent control system uses the air temperature data sent by the meteorological temperature sensor and this function relationship to determine the corresponding electric heat trace heating time. Figure 4 The two electric heat traces are for illustration purposes only and do not indicate that a hydraulic open dome will have only two electric heat traces. The specific number of electric heat traces will be designed and installed by the dome manufacturer based on actual conditions. The heated hydraulic struts described in this embodiment of the present invention are heated by electric heat traces to heat the hydraulic struts, ultimately heating the hydraulic oil within them.

[0062] The dome controller is connected to the intelligent control system, and there is data communication between the two. The intelligent control system sends instructions such as "start electric heating", "stop electric heating", "open the dome protective cover", and "close the dome protective cover" to the dome controller according to actual conditions. The dome controller performs corresponding control actions on the hydraulic open dome according to the received control instructions.

[0063] The meteorological instrument is installed on the outside of the hydraulic open dome and connected to the intelligent control system, with data communication also occurring between the two. The meteorological instrument involved in the embodiments of the present invention primarily includes a temperature sensor, a humidity sensor, a wind speed sensor, a rain and snow sensor, and a cloud meter. The meteorological instrument transmits meteorological data to the intelligent control system in real time. The temperature sensor transmits temperature in degrees Celsius, the humidity sensor transmits humidity in percentage, the wind speed sensor transmits wind speed in meters per second, the rain and snow sensor transmits the presence or absence of rain and snow, and the cloud meter transmits cloud cover percentage. If any meteorological data reported by the meteorological instrument falls within the danger zone for that data, the dome protective cover must be closed promptly to protect the telescope.

[0064] The intelligent control system can calculate the solar pitch angle based on the current station coordinates and time information , the sun sets to the maximum solar pitch angle for nighttime observations with the telescope Time , The time required to heat the hydraulic support rod to the minimum operating temperature As the sun rises to the maximum solar pitch angle for nighttime observations by the telescope Time required The system uses weather data to determine whether to start or stop the electric heating system and whether to open or close the dome cover, thereby achieving intelligent control of the hydraulic open dome. The intelligent control system can be installed on the outside or inside of the hydraulic open dome.

[0065] The embodiment of the present invention is verified by taking a 10-meter open dome protecting a 2.5-meter telescope at an observation station as an example:

[0066] The meteorological data interval is set to: the safe range of humidity is , the warning interval is The danger zone is ; The safe range of wind speed is , the warning interval is The danger zone is ; The safe range of cloud cover is , the warning interval is The danger zone is The safe zone for rain and snow is "no rain and snow", the warning zone and danger zone are both "rain and snow", and the maximum solar pitch angle of the telescope at night , the function of electric heating time relative to air temperature is expressed as:

[0067] ,

[0068] in, Indicates the current air temperature data fed back by the weather instrument. Indicates the time required for electric heating to heat the hydraulic oil in the hydraulic support rod to the minimum temperature required for operation. , .

[0069] The heating time function usually has a certain fault tolerance. For example, according to the heating time function, if the sun is about to set before the maximum solar pitch angle of the telescope at night ( ), the temperature is 10.1℃, there is no need to start the electric heating, and the sun sets when the telescope has the maximum solar pitch angle for nighttime observation ( ), the air temperature is 9.9°C. At this time, the electric heat trace requires 10 minutes of heating, but it may take less than 10 minutes. This error is factored into the electric heat trace heating time function and does not affect the opening or closing of the dome cover. In this embodiment of the present invention, if the air temperature is greater than 10°C, even if the process includes a step to start the electric heat trace, it is not actually necessary to start the electric heat trace.

[0070] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0071] The above specific embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A method for controlling a hydraulic open dome, wherein the dome protective cover is opened or closed by telescopic hydraulic struts, and the method is characterized in that: include: Set the safety interval, warning interval and danger interval of meteorological data, and calculate the current solar pitch angle ,like , then execute the daytime control process, if , then execute the night control process, where Indicates the maximum solar pitch angle of the telescope at night; The daytime control process is as follows: If at least any one of the meteorological data is not within the safe range, the heating of the hydraulic strut is stopped; If the meteorological data are all within the safe range, calculate the maximum solar pitch angle when the sun sets to the telescope for nighttime observation. Time :like , then start heating the hydraulic support rod; if , then open the dome protective cover; Among them, Indicates the current time, Indicates the time required to heat the hydraulic strut to the minimum operating temperature; The night control process is as follows: When the dome protective cover is in the closed state: if at least any one of the meteorological data is not within the safe range, the oil pressure support rod is stopped from being heated; if all the meteorological data are within the safe range, the oil pressure support rod is started to be heated, and when the oil pressure support rod heating time reaches When the dome is opened, When the dome cover is open: calculate the time from the sun rising to the maximum solar pitch angle for nighttime observation of the telescope Corresponding time ,when When the oil pressure rod is heated, , close the dome protection cover; when When the meteorological data are all in the safe range, the heating of the hydraulic support rod is stopped; if at least any one of the meteorological data is not in the safe range, the heating of the hydraulic support rod is started; if at least any one of the meteorological data is in the dangerous range, the dome protective cover is closed.

2. The control method of the hydraulic open dome according to claim 1, characterized in that: The meteorological data includes humidity, wind speed, cloud cover, and rain and snow.

3. The control method of the hydraulic open dome according to claim 2, characterized in that: The safe range of humidity is , the warning interval is The danger zone is ; The safe range of wind speed is , the warning interval is The danger zone is ; The safe range of cloud cover is , the warning interval is The danger zone is The safety zone for rain and snow is "no rain and snow", and the warning zone and danger zone are both "rain and snow". Indicates the safe value of humidity, Indicates the dangerous value of humidity, Indicates the safe value of wind speed, Indicates the dangerous value of wind speed, Indicates the safe value of cloud cover, Indicates the dangerous value of cloud cover.

4. A control system for a hydraulic open dome, for implementing a control method for a hydraulic open dome according to any one of claims 1 to 3, characterized in that: include: Dome protection cover, hydraulic support rod, electric heating, weather instrument and intelligent control system; The meteorological instrument provides meteorological data to the intelligent control system, and the intelligent control system controls the electric heating to start heating the hydraulic support rod or stop heating the hydraulic support rod according to the meteorological data; the intelligent control system controls the dome protective cover to open or close according to the meteorological data.

5. The control system of the hydraulic open dome according to claim 4, characterized in that: It also includes a dome controller, and the intelligent control system controls the electric heating to start heating the hydraulic support rod or stop heating the hydraulic support rod through the dome controller; the intelligent control system controls the dome protective cover to open or close through the dome controller.

6. The control system of the hydraulic open dome according to claim 4, characterized in that: The intelligent control system can be arranged inside or outside the oil pressure open dome.

7. The control system of the hydraulic open dome according to claim 4, characterized in that: The solar pitch angle is calculated by the intelligent control system , the sun sets to the maximum solar pitch angle for nighttime observations with the telescope Time , The time required to heat the hydraulic support rod to the minimum operating temperature As the sun rises to the maximum solar pitch angle for nighttime observations by the telescope Corresponding time .

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