A holographic sand table display method and system

Abstract

The application relates to a holographic sand table display method and system, and relates to the field of holographic sand tables, which comprises the following steps: 100, collecting a display image of a holographic sand table; 101, determining the light transmittance of a preset display cover from the display image; 102, when the light transmittance is lower than a preset display threshold, determining the expansion angle of the preset display cover from the display image; 103, determining the rope change rate in response to the expansion angle and determining the wiping speed in response to the light transmittance; 104, determining the rope speed in response to the rope change rate and the wiping speed; 105, controlling the rope device preset on the top of the frame of the display cover to move downward and drive the wiping rope to move on the surface of the preset display cover in one direction at the rope speed to wipe the display cover. The application has the effects of improving the convenience of using the holographic sand table and improving the definition of holographic projection display.

Description

Technical Field

[0001] This invention relates to the field of holographic sand tables, and in particular to a method and system for displaying holographic sand tables. Background Technology

[0002] A holographic sand table is a display system that combines holographic projection technology with traditional sand table models. It uses the principles of light interference and diffraction to project holographic images of three-dimensional objects onto the sand table model, thereby creating a realistic three-dimensional effect.

[0003] In existing technologies, holographic sand tables generally consist of a sand table model, a holographic projection system, a data processing system, and an interactive system. The outside of the holographic sand table is generally equipped with a display cover to protect the sand table model and reduce the impact of external factors on the holographic projection system. The display cover is generally made of glass. After long-term use of the holographic sand table, dust easily accumulates on the display cover, which generally requires manual cleaning of the display cover regularly.

[0004] When there is dust inside the display cover, it is difficult for staff to clean the inside of the display cover from the outside, so the display cover needs to be removed, which is time-consuming and laborious. Summary of the Invention

[0005] To improve the ease of use of holographic sand tables and enhance the clarity of holographic projection displays, this invention provides a method and system for displaying holographic sand tables.

[0006] In a first aspect, the present invention provides a method for displaying a holographic sand table, employing the following technical solution:

[0007] A method for displaying a holographic sand table includes:

[0008] Step 100: Acquire the display image of the holographic sand table;

[0009] Step 101: Determine the preset light transmittance of the display cover from the displayed image;

[0010] Step 102: When the light transmittance is lower than a preset display threshold, determine the preset expansion angle of the display cover from the display image;

[0011] Step 103: Determine the rope variability in response to the expansion angle, and determine the wiping rate in response to the light transmittance;

[0012] Step 104: Determine the rope rate in response to the rope variability and wiping rate;

[0013] Step 105: Control the rope device preset on the top of the display cover frame to move downward and drive the wiping rope to move unidirectionally on the preset display cover surface at the rope speed to wipe the display cover.

[0014] By adopting the above technical solution, images of the holographic sand table are acquired in real time to determine the light transmittance of the display cover. When the light transmittance of the display cover is low, the inside of the display cover can be wiped with a rope device, thereby reducing the accumulation of dust on the inside of the display cover and reducing the blurring of the holographic image, thus improving the ease of use of the holographic sand table.

[0015] Optional, also includes:

[0016] Step 106: Determine the rate of decrease in response to the transmittance;

[0017] Step 107: Determine the frame slope in response to the expansion angle;

[0018] Step 108: Determine the movement rate in response to the frame slope and descent rate;

[0019] Step 109: Control the rope device pre-installed on the top of the frame of the display cover to move downward at the stated moving rate.

[0020] By adopting the above technical solution, the display cover is generally set in a pyramid shape. The slope of the display cover is identified by image recognition, thereby controlling the rope device to move down at a uniform speed on the frame of the display cover, thereby driving the wiping rope to descend at a uniform speed in the vertical direction, improving the cleaning efficiency of the wiping rope.

[0021] Optionally, it also includes an impurity cleaning method, the impurity cleaning method comprising:

[0022] Step 200: Collect the rope tension of the wiping rope;

[0023] Step 201: Determine the length of the wiping rope in response to the rope variability;

[0024] Step 202: Determine the distance to the impurity in response to the rope tension and rope length;

[0025] Step 203: Determine the vibration frequency in response to the impurity distance;

[0026] Step 204: Control the preset rope device to drive the wiping rope to vibrate according to the vibration frequency.

[0027] By adopting the above technical solution, when there are foreign objects adhering to the display cover, the wiping rope is easily blocked when passing through the foreign objects, which causes the wiping rope to be pulled. When the pulling force is too large, it is easy to damage the wiping rope. The tension of the wiping rope is detected in real time, so that when the wiping rope is pulled by foreign objects, it is driven to vibrate, which causes the contacted foreign objects to vibrate, thereby causing the foreign objects to detach from the surface of the display cover and improving the cleaning efficiency of the wiping rope.

[0028] Optionally, the rope device includes a line-laying device and a line-reeling device, and the impurity removal method further includes:

[0029] Step 205: Determine a cleaning threshold in response to the rope length;

[0030] Step 206: When the distance to the impurity is greater than the cleaning threshold, determine the pay-off rate in response to the moving rate and the wiping rate;

[0031] Step 207: Determine the device position of the rope device in response to the rope length and spread angle;

[0032] Step 208: Control the wire feeding device to move downward at the moving speed and feed out the wiping rope at the wire feeding speed, and control the wire take-up device to take up the wiping rope at the device position at the wiping speed;

[0033] Step 209: Determine the wire laying position in response to the device position and moving speed, and determine the bottom position from the displayed image;

[0034] Step 210: When the line release position is consistent with the bottom position, control the line take-up device to move downward at the moving speed and take up the wiping rope at the wiping speed, and control the line release device to release the wiping rope at the bottom position at the line release speed.

[0035] By adopting the above technical solution, the longer the wiping rope is, the greater the tensile force it can withstand. The upper limit of the tensile force that the wiping rope can withstand is estimated based on the length of the wiping rope. When the tensile force on the wiping rope reaches the upper limit, the rope device is controlled to release the line while continuing to move downward. In this way, while maintaining the tensile force on the wiping rope, the wiping rope is driven to wipe other parts of the display cover.

[0036] Optionally, the impurity cleaning method further includes:

[0037] Step 211: Determine the take-up position in response to the device position and moving speed;

[0038] Step 212: When the reel position is consistent with the bottom position, control the preset reel device to reel in the wiping rope and update the rope tension;

[0039] Step 213: When the rope tension falls into the preset tension range, determine the tension length in response to the rope tension;

[0040] Step 214: Determine the shortest length in response to the device position and the distance to the impurity;

[0041] Step 215: Determine the offset distance in response to the tension length and the shortest length;

[0042] Step 216: Determine the offset direction in response to the rope tension and rope length;

[0043] Step 217: Determine the impurity location in response to the offset distance, offset direction, device position, and impurity distance;

[0044] Step 218: Based on the location of the impurity, control the preset warning device to issue an alarm.

[0045] By adopting the above technical solution, when the rope device reaches the bottom of the display cover, the length of the wiping rope is controlled to adjust the pulling force of the wiping rope on the impurities, thereby ensuring that the wiping rope does not deform. Then, the distance from one bottom side of the display cover to the impurities and then to the other bottom side of the display cover is measured by the wiping rope, thereby calculating the location of the impurities, and the warning device promptly notifies the staff to clean up the impurities in time.

[0046] Optionally, it also includes an impurity pulling method, the impurity pulling method comprising:

[0047] Step 300: When the rope tension falls into the preset tension range, the frame outline is identified from the displayed image;

[0048] Step 301: Determine the tensioning position in response to the border contour;

[0049] Step 302: Control the preset rope devices to move alternately from the bottom position to the tensioned position;

[0050] Step 303: Determine the tensioning direction in response to the tensioning position and the impurity position;

[0051] Step 304: Control the preset rope device to move unidirectionally on the frame in the tension direction to pull the foreign object.

[0052] By adopting the above technical solution, when the wiping rope pulls and vibrates the impurities and makes it difficult for the impurities to be removed from the surface of the display cover, the winding device and the pulling device are controlled to move alternately to drive the wiping rope to wrap around and bind the impurities, so that the impurities are vibrated evenly in the circumferential direction. The rope device is also controlled to move on the frame to adjust the direction in which the wiping rope pulls the impurities, thereby driving the impurities to be removed from the surface of the display cover.

[0053] Optionally, the impurity pulling method further includes:

[0054] Step 305: When the preset rope devices move alternately from the bottom position to the tensioned position, update the device position;

[0055] Step 306: Determine the adjustment length in response to the impurity location and the device position;

[0056] Step 307: Control the rope device to adjust the length of the wiping rope according to the adjusted length, and update the rope tension;

[0057] Step 308: When the rope tension exceeds the preset tension range, determine the correction length in response to the rope tension;

[0058] Step 309: Control the rope device to adjust the length of the wiping rope according to the corrected length.

[0059] By adopting the above technical solution, when the rope device moves on the frame, the position of the rope device is updated in real time to determine the real-time distance between the rope device and the impurities. The length of the wiping rope is adjusted according to the real-time distance, and the wiping rope is lengthened in time when the pulling force on the wiping rope is too large to reduce the damage caused by excessive force on the wiping rope.

[0060] Optionally, the impurity pulling method further includes:

[0061] Step 310: Determine the range length in response to the tension length, adjustment length, and correction length;

[0062] Step 311: Determine the wrapping length in response to the impurity location and the tension position;

[0063] Step 312: Determine the length drop in response to the range length and the surrounding length;

[0064] Step 313: Determine the impurity range in response to the length drop;

[0065] Step 314: Based on the impurity range, control the preset warning device to issue an alarm.

[0066] By adopting the above technical solution, when the range of impurities is large, it is easy for the length required for the wiping rope to wrap around and bind the impurities to be too long. The length adjustment made by the rope device from the bottom position to the tension position is statistically analyzed to obtain the length of the rope device when it reaches the tension position, and then the range of impurities can be calculated.

[0067] Optionally, the impurity pulling method further includes:

[0068] Step 315: When the length drop is greater than 0, determine the point of sudden change in tension in response to the rope tension;

[0069] Step 316: Determine the bending angle in response to the tension abrupt change point and the correction length;

[0070] Step 317: Determine the tensile growth rate in response to the tensile abrupt change point;

[0071] Step 318: Determine the side length radian in response to the stated tension growth rate;

[0072] Step 319: Determine the impurity range in response to the impurity range, tensile change point, bend angle, and side length radian.

[0073] By adopting the above technical solution, the bending angle and side length of the impurity range are determined by the change in the tension of the wiping rope, thereby obtaining the outline of the impurity range and improving the accuracy of the alarm.

[0074] Secondly, this application provides a holographic sand table display system, which adopts the following technical solution:

[0075] A holographic sand table display system includes:

[0076] The acquisition module is used to acquire and display images and rope tension;

[0077] A memory, used to store any of the above-mentioned methods for displaying a holographic sand table;

[0078] The processor is the unit of memory that allows programs to be loaded and executed by the processor.

[0079] In summary, this application includes at least one of the following beneficial technical effects:

[0080] 1. Real-time acquisition of images of the holographic sand table to determine the light transmittance of the display cover. When the light transmittance of the display cover is low, the inside of the display cover can be wiped with a rope device to reduce dust accumulation inside the display cover, which can cause blurring of the holographic image and improve the ease of use of the holographic sand table.

[0081] 2. The display cover is generally set in a pyramid shape. The slope of the display cover is identified by image recognition, thereby controlling the rope device to move down at a uniform speed on the frame of the display cover, which in turn drives the wiping rope to descend at a uniform speed in the vertical direction, improving the cleaning efficiency of the wiping rope.

[0082] 3. When foreign objects adhere to the display cover, the wiping rope is easily blocked when passing through the foreign objects, which causes the wiping rope to be pulled. When the pulling force is too great, the wiping rope may be damaged. The tension of the wiping rope is detected in real time, so that when the wiping rope is pulled by foreign objects, it is driven to vibrate, which causes the contact foreign objects to vibrate, thereby removing the foreign objects from the surface of the display cover and improving the cleaning efficiency of the wiping rope. Attached Figure Description

[0083] Figure 1 The process of a holographic sand table display method Figure 1 ;

[0084] Figure 2 The process of a holographic sand table display method Figure 2 ;

[0085] Figure 3 This is the process of the impurity cleaning method. Figure 1 ;

[0086] Figure 4 This is the process of the impurity cleaning method. Figure 2 ;

[0087] Figure 5 This is the process of the impurity cleaning method. Figure 3 ;

[0088] Figure 6 The process of the impurity pulling method Figure 1 ;

[0089] Figure 7 The process of the impurity pulling method Figure 2 ;

[0090] Figure 8 The process of the impurity pulling method Figure 3 ;

[0091] Figure 9 The process of the impurity pulling method Figure 4 . Detailed Implementation

[0092] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0093] Reference Figure 1 A method for displaying a holographic sand table includes:

[0094] Step 100: Acquire the display image of the holographic sand table.

[0095] The displayed image refers to the exterior image of the holographic sand table. The displayed image can be captured by a camera fixed to the outside of the display cover. The method of capturing the displayed image is selected by the staff according to the actual situation, and will not be elaborated here.

[0096] Step 101: Determine the transmittance of the preset display cover from the displayed image.

[0097] Light transmittance refers to the percentage of light flux that passes through the display cover to the incident light flux. The light flux that passes through the display cover can be identified from the display image using image recognition technology, and the incident light flux can be read from the holographic projection system of the holographic sand table to calculate the light transmittance. The method for calculating light transmittance is common knowledge to those in the field and will not be elaborated here.

[0098] Step 102: When the light transmittance is lower than a preset display threshold, determine the preset expansion angle of the display cover from the display image.

[0099] The display threshold refers to the minimum light transmittance at which a holographic projection can be clearly displayed through the display housing. The display threshold is selected by the staff based on the actual situation and will not be elaborated upon here. Light transmittance below the display threshold indicates excessive dust on the display housing, resulting in a blurry holographic projection. The expansion angle refers to the angle between adjacent frames of the display housing. A frame is a metal strip on the edge of the display housing used to connect and fix the glass to form the display housing. The side of the frame furthest from the ground and the side closest to the ground are generally parallel, while the other two expansion edges generally form a certain angle. The expansion angle is the angle value presented by the other two sides of the frame. The expansion angle can be identified from the displayed image using image recognition technology. The method for identifying the expansion angle is common knowledge in the field and will not be elaborated upon here.

[0100] Step 103: Determine the rope variability in response to the expansion angle, and determine the wiping rate in response to the light transmittance.

[0101] Cleaning solution refers to the chemical reagents used to clean glass. Wiping rope refers to cotton rope that has been moistened with cleaning solution beforehand. Rope device refers to the equipment that drives the wiping rope to move on the display cover. The rope device includes a wire release device and a wire retraction device. The wire release device is the equipment that releases the wiping rope through a motor, and the wire retraction device is the equipment that retrieves the wiping rope through a motor. Guide rails for the wire release device and the wire retraction device are fixed on the frame. The cleaning solution, wiping rope and rope device are selected by the staff according to the actual situation, and will not be described in detail here.

[0102] Rope variability refers to the rate of change of the length of the frame in the horizontal direction in the vertical direction. The larger the expansion angle, the greater the rope variability. The method for determining rope variability is common knowledge to those in the field and will not be elaborated here.

[0103] Wiping rate refers to the speed required to wipe the display cover with a wiping rope. The lower the light transmittance, the more dust is on the display cover, and the higher the wiping rate is needed to improve the cleaning effect of the wiping rope on the display cover per unit time. The wiping rate can be obtained from the wiping correspondence table, which is a data table that records different light transmittances and their corresponding light transmittances.

[0104] Step 104: Determine the rope rate in response to the rope variability and wiping rate.

[0105] Rope speed refers to the speed at which the wiping rope is driven by the rope device to move horizontally on the display cover. First, the change in distance between the wire feeding device and the wire take-up device as they move on the frame is obtained based on the rope's coefficient of friction. Then, the sum of this change and the wiping speed is calculated as the rope speed. This reduces the risk of damage to the wiping rope caused by the increased distance between the wire feeding device and the wire take-up device as they move along the expansion edge, and also reduces the risk of the wiping rope bending and detaching from the display cover surface when the distance between them decreases. The method for calculating the rope speed is common knowledge to those skilled in the art and will not be elaborated here.

[0106] Step 105: Control the rope device preset on the top of the display cover frame to move downward and drive the wiping rope to move unidirectionally on the preset display cover surface at the rope speed to wipe the display cover.

[0107] Real-time image acquisition of the holographic sand table determines the light transmittance of the display cover. When the light transmittance of the display cover is low, the inside of the display cover can be wiped with a rope device, thereby reducing dust accumulation inside the display cover that could cause blurring of the holographic image and improving the ease of use of the holographic sand table.

[0108] Reference Figure 2 A method for displaying a holographic sand table also includes:

[0109] Step 106: Determine the rate of decrease in response to the transmittance.

[0110] The descent rate refers to the speed at which the wiping rope is driven by the rope device to move in the vertical direction. The lower the light transmittance, the more dust is on the display cover, and the smaller the descent rate is needed to increase the time the wiping rope spends wiping the display cover, thereby improving the cleaning effect of the wiping rope on the display cover per unit time. The descent rate can be found in the descent correspondence table, which records different light transmittances and their corresponding descent rates.

[0111] Step 107: Determine the frame slope in response to the expansion angle.

[0112] The frame slope refers to the slope value of the expanded edge. The frame slope can be identified from the displayed image using image recognition technology. The method for identifying the frame slope is common knowledge to those in the field and will not be elaborated here.

[0113] Step 108: Determine the movement rate in response to the frame slope and descent rate.

[0114] The moving speed refers to the speed at which the take-up device and the release device move on the expansion side, respectively. The moving speed can be calculated as the quotient of the descent rate and the frame slope.

[0115] Step 109: Control the rope device pre-installed on the top of the frame of the display cover to move downward at the stated moving rate.

[0116] The display cover is typically pyramid-shaped. By recognizing the slope of the display cover through image recognition, the rope device is controlled to move downwards at a uniform speed on the frame of the display cover. This drives the wiping rope to remain horizontal while descending at a uniform speed in the vertical direction, thereby improving the cleaning efficiency of the wiping rope.

[0117] Reference Figure 3 Impurity removal methods include:

[0118] Step 200: Collect the rope tension of the wiping rope.

[0119] Rope tension refers to the tensile force exerted on the wiping rope. Rope tension can be obtained through pressure sensors fixed to the line-laying device and / or line-reeling device. The method for collecting rope tension is selected by the staff according to the actual situation, and will not be elaborated here.

[0120] Step 201: Determine the length of the wiping rope in response to the rope variation.

[0121] Rope length refers to the length of the wiping rope between the line-laying device and the line-retrieving device, that is, the distance between the line-laying device and the line-retrieving device on the expansion side. The rope length can be calculated by rope deflection and movement time. Movement time refers to the duration of movement of the rope device. The methods for determining movement time and calculating rope length are common knowledge to those skilled in the art and will not be elaborated here.

[0122] Step 202: Determine the distance to the impurity in response to the rope tension and rope length.

[0123] The impurity distance refers to the distance between the impurity on the surface of the display cover and the rope device in a direction perpendicular to the wiping rope. The longer the rope and the greater the rope tension, the greater the impurity distance. The impurity distance can be obtained from the distance relationship table, which is a data table that records different rope tensions and rope lengths and their corresponding impurity distances.

[0124] Step 203: Determine the vibration frequency in response to the impurity distance.

[0125] Vibration frequency refers to the frequency at which the rope device drives the wiping rope to vibrate. The farther away the impurity is, the greater the tension of the impurity on the rope. At this time, a higher vibration frequency is required to drive the impurity off the surface of the display cover. The vibration frequency can be obtained from the vibration relationship table, which is a data table that records different impurity distances and their corresponding vibration frequencies.

[0126] Step 204: Control the preset rope device to drive the wiping rope to vibrate according to the vibration frequency.

[0127] When foreign objects adhere to the display cover, the wiping rope is easily blocked when passing through them, causing it to be pulled. Excessive pulling force can damage the wiping rope. Real-time monitoring of the wiping rope's tension allows it to vibrate when pulled by foreign objects, causing the foreign objects to vibrate and thus detach from the display cover surface, improving the cleaning efficiency of the wiping rope.

[0128] Reference Figure 4 Impurity cleaning methods also include:

[0129] Step 205: Determine the cleaning threshold in response to the rope length.

[0130] The cleaning threshold refers to the maximum distance of impurities that the wiping rope can withstand without permanent deformation. The elastic coefficient and elastic limit of the wiping rope are fixed. Therefore, the longer the rope is, the greater the length that the wiping rope can stretch. In other words, the longer the rope is, the higher the cleaning threshold. The cleaning threshold can be obtained from the cleaning relationship table, which is a data table that records different rope lengths and their corresponding cleaning thresholds.

[0131] Step 206: When the distance to the impurity is greater than the cleaning threshold, the wire release rate is determined in response to the moving rate and the wiping rate.

[0132] If the distance to the impurities is greater than the cleaning threshold, it means that the wiping rope has been stretched to its limit. Further stretching can easily damage the wiping rope. The wire release rate refers to the speed at which the wire release device releases the wiping rope. By releasing the wiping rope, the further stretching of the wiping rope can be reduced. The sum of the moving rate and the wiping rate can be calculated as the wire release rate, thereby causing the wiping rope to retract.

[0133] For example, let A be the location of the wire feeding device when the distance to the impurity equals the cleaning threshold, B be the location of the wire take-up device, and C be the location of the impurity. At this point, AC + BC is the rope length, and the distance from C to AB is the distance to the impurity. When the wire feeding device moves further to D, CD + BC is the rope length. At this point, ADC forms a triangle, so AD + AC > CD. Combining this with the above formula, we get the formula AD + AC + BC > CD + BC, where AD is the moving speed. That is, the length of the wiping rope after further wire feeding according to the moving speed is greater than the length of the wiping rope after the wire feeding device moves to D and is further stretched. In other words, the wiping rope tends to retract at this point.

[0134] Step 207: Determine the device position of the rope device in response to the rope length and expansion angle.

[0135] The device position refers to the position information of the wire feeding device and the wire taking-up device on the display cover. The device position can be calculated by the rope length and the expansion angle. The calculation method of the device position is common knowledge to those in the art and will not be elaborated here.

[0136] Step 208: Control the wire feeding device to move downward at the moving speed and feed out the wiping rope at the wire feeding speed, and control the wire take-up device to take up the wiping rope at the device position at the wiping speed.

[0137] The wire feeding device is controlled to continue moving downwards and releasing the wiping rope to continue wiping the remaining parts on the display cover, while the wire take-up device is controlled to stop at the device position to take up the wire, so as to reduce the uneven force on the wiping rope when the wire feeding device and the wire take-up device move at the same time.

[0138] Step 209: Determine the line laying position in response to the device position and the moving speed, and determine the bottom position from the displayed image.

[0139] The wire-laying position refers to the position of the wire-laying device on the display cover. The calculation method for the wire-laying position is common knowledge to those skilled in the art and will not be elaborated here. The bottom position refers to the two intersection points of the two expansion edges with one of the near-ground ends of the frame. The bottom position can be determined from the display image using image recognition technology. The method for identifying the bottom position is common knowledge to those skilled in the art and will not be elaborated here.

[0140] Step 210: When the line release position is consistent with the bottom position, control the line take-up device to move downward at the moving speed and take up the wiping rope at the wiping speed, and control the line release device to release the wiping rope at the bottom position at the line release speed.

[0141] When the wire feeding position is consistent with the bottom position, it means that the wire feeding device has reached the near-ground end of the frame. At this time, control the wire feeding device to continue feeding at the bottom position, and control the wire take-up device to move from the device position to the bottom position to wipe the remaining area of ​​the display cover.

[0142] The longer the wiping rope, the greater the tensile force it can withstand. Based on the length of the wiping rope, the upper limit of the tensile force that the wiping rope can withstand is estimated. When the tensile force on the wiping rope reaches the upper limit, the rope device is controlled to release the line while continuing to move downward. In this way, while maintaining the tensile force on the wiping rope, the wiping rope is driven to wipe other parts of the display cover.

[0143] Reference Figure 5 Impurity cleaning methods also include:

[0144] Step 211: Determine the take-up position in response to the device position and the moving speed.

[0145] The take-up position refers to the position information of the take-up device on the display cover. The calculation method of the take-up position is common knowledge to those in the art and will not be elaborated here.

[0146] Step 212: When the reel position is consistent with the bottom position, control the preset reel device to reel in the wiping rope and update the rope tension.

[0147] When the line reel position is consistent with the bottom position, it means that the line reel has reached the near-ground end of the frame. At this time, control the line reel to tighten the wiping rope.

[0148] Step 213: When the rope tension falls into the preset tension range, determine the tension length in response to the rope tension.

[0149] The tension range refers to the rope tension range where the wiping rope is just taut and not stretched. The tension range is selected by the staff based on the actual situation and will not be elaborated here. When the rope tension falls into the tension range, it means that the wiping rope is just taut. The length of the wiping rope at this time is the sum of the distance from the wire release device to the impurity and the distance from the wire take-up device to the impurity. The tension length is the length of the wiping rope at this time. The method for determining the tension length is common knowledge in the field and will not be elaborated here.

[0150] Step 214: Determine the shortest length in response to the device position and the distance to the impurity.

[0151] The shortest length refers to the minimum sum of the distances from points on a line segment that passes through the point on the side of the frame furthest from the ground and is parallel to the side of the frame furthest from the ground to the wire feeding device and the wire taking device. When the frame is symmetrical, the sum of the distances from the midpoint of the line segment to the wire feeding device and the wire taking device is the shortest length. The method for determining the shortest length is common knowledge to those skilled in the art and will not be elaborated here.

[0152] Step 215: Determine the offset distance in response to the tension length and the shortest length.

[0153] Offset distance refers to the distance between the impurity and the midpoint of the line segment. When the impurity is offset from the midpoint of the line segment, the tension length will increase. That is, the greater the difference between the tension length and the shortest length, the greater the offset distance. The method for determining the offset distance is common knowledge to those in the field and will not be elaborated here.

[0154] Step 216: Determine the offset direction in response to the rope tension and rope length.

[0155] The offset direction refers to the direction in which impurities deviate towards the expansion edge where the pay-off or take-up device is located. When the pay-off or take-up device moves from the device position to the bottom position, the wiping rope tends to contract, resulting in a decrease in rope tension. The closer the impurities are to the moving rope device, the lower the rate of change of rope tension. The rate of change of rope tension can be determined by measuring the rope tension when the pay-off device moves from the device position to the bottom position, thereby obtaining the offset direction of the impurities. The method for determining the offset direction is common knowledge to those skilled in the art and will not be elaborated here.

[0156] Step 217: Determine the impurity location in response to the offset distance, offset direction, device position, and impurity distance.

[0157] The impurity location is the location information of the impurity, that is, the location point reached by moving the midpoint of the line segment on the side of the device that is far away from the ground end of the frame and parallel to the ground end of the frame within the frame's range, according to the offset direction. The method for determining the impurity location is common knowledge to those skilled in the art and will not be described in detail here.

[0158] Step 218: Based on the location of the impurity, control the preset warning device to issue an alarm.

[0159] Warning devices are equipment used to alert staff to impurities on the outer casing. Staff select warning devices based on the actual situation, which will not be elaborated here.

[0160] When the rope device reaches the bottom of the display cover, the length of the wiping rope is controlled to adjust the pulling force of the wiping rope on the impurities, thereby ensuring that the wiping rope does not deform. Then, the distance from one bottom side of the display cover to the impurity and then to the other bottom side of the display cover is measured by the wiping rope, thereby calculating the location of the impurity. The warning device will then promptly notify the staff to clean up the impurity in time.

[0161] Reference Figure 6 The methods for removing impurities include:

[0162] Step 300: When the rope tension falls into the preset tension range, the frame outline is identified from the displayed image.

[0163] The border outline refers to the outline of the frame. The border outline can be determined from the displayed image using image recognition technology. The method for identifying the border outline is common knowledge to those in the field and will not be elaborated here.

[0164] Step 301: Determine the tensioning position in response to the border profile.

[0165] The guide rail for the movement of the rope device is fixed on the frame. At this time, the outline of the frame is the range of the rope device’s movement path. The tension position refers to the position information of the rope device to wrap around the binding impurities. Generally, the midpoint of the line segment formed by the three remaining lines after removing the near end of the frame outline is used as the tension position. The method for determining the tension position is common knowledge to those in the art and will not be elaborated here.

[0166] Step 302: Control the preset rope devices to move alternately from the bottom position to the tension position.

[0167] The control mechanism moves the wire feeding device and the wire take-up device closer to each other by moving them along one side of the frame near the ground, and then further moves them to the tension position so that the wire feeding device and the wire take-up device coincide in the tension position and the impurities are bound around by the wiping rope.

[0168] Step 303: Determine the tensioning direction in response to the tensioning position and the impurity position.

[0169] The tensioning direction refers to the direction in which the wire feeding and take-up devices move on the frame, i.e., clockwise or counterclockwise. The wiping angle of the wiping line can be calculated first from the tensioning position and the position of the impurity, and then the tensioning direction can be selected based on the wiping angle. During the wiping process, the wiping rope generally pulls the impurity downwards. When the impurity is further pulled by the wire feeding and take-up devices, the upward pulling direction is preferred. Generally, when the wiping angle falls within the range of -90 degrees to 90 degrees, counterclockwise is selected; otherwise, clockwise is selected. The method for determining the tensioning direction is common knowledge to those skilled in the art and will not be elaborated here.

[0170] Step 304: Control the preset rope device to move unidirectionally on the frame in the tension direction to pull the foreign object.

[0171] When the wiping rope pulls and vibrates the impurities, making it difficult for them to detach from the display cover surface, the winding device and the pulling device are moved alternately to drive the wiping rope to wrap around and bind the impurities, thereby causing the impurities to vibrate evenly in the circumferential direction. The rope device is also controlled to move on the frame to adjust the direction in which the wiping rope pulls the impurities, thereby driving the impurities to detach from the display cover surface.

[0172] Reference Figure 7 The impurity pulling method also includes:

[0173] Step 305: When the preset rope devices move alternately from the bottom position to the tensioned position, update the device position.

[0174] The device position is updated based on the movement of the pay-off and take-up devices to locate their positions in real time.

[0175] Step 306: Determine the adjustment length in response to the impurity location and the device location.

[0176] The adjustment length refers to the length of line that the rope device needs to release or retrieve. The required length of the wiping rope can be calculated from the location of the impurities and the location of the device, and then compared with the existing length value to determine the adjustment length. The method for determining the adjustment length is common knowledge to those in the field and will not be elaborated here.

[0177] Step 307: Control the rope device to adjust the length of the wiping rope according to the adjusted length, and update the rope tension.

[0178] When adjusting the length of the wiping rope, the tensile force on the rope is monitored in real time to prevent damage from excessive force or bending and tangling from insufficient force.

[0179] Step 308: When the rope tension exceeds the preset tension range, determine the correction length in response to the rope tension.

[0180] If the rope tension exceeds the tension range, it means that the tension on the wiping rope is too large or too small. The correction length is the rope length that needs to be adjusted to bring the rope tension into the tension range. The method for determining the correction length is common knowledge to those in the field and will not be elaborated here.

[0181] Step 309: Control the rope device to adjust the length of the wiping rope according to the corrected length.

[0182] As the rope device moves on the frame, its position is updated in real time to determine the real-time distance between the rope device and the impurities. The length of the wiping rope is then adjusted according to the real-time distance, and the wiping rope is lengthened in time when the tension on it is too great to reduce the risk of damage due to excessive stress.

[0183] Reference Figure 8 The impurity pulling method also includes:

[0184] Step 310: Determine the range length in response to the tension length, adjustment length, and correction length.

[0185] The range length refers to the adjusted length of the wiping rope, which is the length of the wiping rope when the rope device is in the taut position. The method for determining the range length is common knowledge to those in the field and will not be elaborated here.

[0186] Step 311: Determine the wrap length in response to the impurity location and the tension location.

[0187] The wrapping length refers to the length of the wiping rope that wraps around the binding impurities when the rope device is in the taut position. The method for determining the wrapping length is common knowledge to those in the field and will not be elaborated here.

[0188] Step 312: Determine the length drop in response to the range length and the wrap length.

[0189] The length drop refers to the difference between the range length and the wrap length. The length drop shows the length of the wiping rope used to wrap around and bind impurities.

[0190] Step 313: Determine the impurity range in response to the length drop.

[0191] The impurity range refers to the area of ​​a circle whose circumference is the difference in length. The method for determining the impurity range is common knowledge to those in the field and will not be elaborated here.

[0192] Step 314: Based on the impurity range, control the preset warning device to issue an alarm.

[0193] When the range of impurities is large, the length required for the wiping rope to wrap around and bind the impurities may be too long. The length adjustment made by the rope device when moving from the bottom position to the tension position is statistically analyzed to obtain the length of the rope device when it reaches the tension position, and then the range of impurities can be calculated.

[0194] Reference Figure 9 The impurity pulling method also includes:

[0195] Step 315: When the length drop is greater than 0, determine the point of sudden change in tension in response to the rope tension.

[0196] A length drop greater than 0 indicates that the length required for the wiping rope to wrap around and bind the impurities is relatively large, meaning that the range of impurities is relatively large. The tension change point refers to the moment when the rope tension changes abruptly during the process of the rope device moving from the bottom position to the tensioned position. The method for identifying the tension change point is common knowledge to those in the field and will not be elaborated here.

[0197] Step 316: Determine the bending angle in response to the tension abrupt change point and the correction length.

[0198] A sudden change in rope tension indicates a change in the angle of the impurity's edge. The bend angle is the angle at which the impurity's edge changes. The rope tension before and after the point of sudden change can be retrieved to determine the change in rope tension. Then, the bend angle corresponding to the change value can be found in the tension relationship table. When the rope tension exceeds the tension range, the bend angle corresponding to the corrected length can be found in the length relationship table. The tension relationship table is a data table that records different change values ​​and their corresponding bend angles, while the length relationship table is a data table that records different corrected lengths and their corresponding bend angles.

[0199] Step 317: Determine the tensile growth rate in response to the tensile abrupt change point.

[0200] The tension growth rate refers to the growth rate of the rope tension between the points of sudden change in tension. The method for determining the tension growth rate is common knowledge to those in the field and will not be elaborated here.

[0201] Step 318: Determine the side length radian in response to the stated tension growth rate.

[0202] When the edge of the impurity is curved, the rope tension increases uniformly. The side length arc is the arc value corresponding to the increase in tension. The method for determining the side length arc is common knowledge in the field and will not be elaborated here.

[0203] Step 319: Determine the impurity range in response to the impurity range, tensile change point, bend angle, and side length radian.

[0204] By determining the bending angle and side length of the impurity range by observing the changes in the tension on the wiping rope, the outline of the impurity range can be obtained, thereby improving the accuracy of the alarm.

[0205] Based on the same inventive concept, embodiments of the present invention provide a holographic sand table display system, comprising:

[0206] The acquisition module is used to acquire and display images and rope tension;

[0207] A memory, used to store any of the above-mentioned methods for displaying a holographic sand table;

[0208] The processor is the unit of memory that allows programs to be loaded and executed by the processor.

[0209] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0210] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for displaying a holographic sand table, characterized in that, include: Step 100: Acquire the display image of the holographic sand table; Step 101: Determine the preset light transmittance of the display cover from the displayed image; Step 102: When the light transmittance is lower than a preset display threshold, determine the preset expansion angle of the display cover from the display image; Step 103: Determine the rope variability in response to the expansion angle and the wiping rate in response to the light transmittance, wherein the rope variability refers to the rate of change of the length value of the frame in the horizontal direction in the vertical direction; Step 104: Determine the rope rate in response to the rope variability and wiping rate; Step 105: Control the rope device preset on the top of the display cover frame to move downward and drive the wiping rope to move unidirectionally on the preset display cover surface according to the rope speed to wipe the display cover; Also includes: Step 106: Determine the rate of decrease in response to the transmittance; Step 107: Determine the frame slope in response to the expansion angle; Step 108: Determine the movement rate in response to the frame slope and descent rate; Step 109: Control the rope device pre-installed at the top of the frame of the display cover to move downwards at the stated moving rate; It also includes an impurity cleaning method, the impurity cleaning method comprising: Step 200: Collect the rope tension of the wiping rope; Step 201: Determine the length of the wiping rope in response to the rope variability; Step 202: Determine the distance to the impurity in response to the rope tension and rope length; Step 203: Determine the vibration frequency in response to the impurity distance; Step 204: Control the preset rope device to drive the wiping rope to vibrate according to the vibration frequency; The rope device includes a line-laying device and a line-reeling device, and the impurity removal method further includes: Step 205: Determine a cleaning threshold in response to the rope length; Step 206: When the distance to the impurity is greater than the cleaning threshold, determine the pay-off rate in response to the moving rate and the wiping rate; Step 207: Determine the device position of the rope device in response to the rope length and spread angle; Step 208: Control the wire feeding device to move downward at the moving speed and feed out the wiping rope at the wire feeding speed, and control the wire take-up device to take up the wiping rope at the device position at the wiping speed; Step 209: Determine the wire laying position in response to the device position and moving speed, and determine the bottom position from the displayed image; Step 210: When the line release position is consistent with the bottom position, control the line take-up device to move downward at the moving speed and take up the wiping rope at the wiping speed, and control the line release device to release the wiping rope at the bottom position at the line release speed.

2. The method for displaying a holographic sand table according to claim 1, characterized in that, The impurity removal method further includes: Step 211: Determine the take-up position in response to the device position and moving speed; Step 212: When the reel position is consistent with the bottom position, control the preset reel device to reel in the wiping rope and update the rope tension; Step 213: When the rope tension falls into the preset tension range, determine the tension length in response to the rope tension; Step 214: Determine the shortest length in response to the device position and the distance to the impurity; Step 215: Determine the offset distance in response to the tension length and the shortest length; Step 216: Determine the offset direction in response to the rope tension and rope length; Step 217: Determine the impurity location in response to the offset distance, offset direction, device position, and impurity distance; Step 218: Based on the location of the impurity, control the preset warning device to issue an alarm.

3. The method for displaying a holographic sand table according to claim 2, characterized in that, It also includes a method for pulling out impurities, the method for pulling out impurities comprising: Step 300: When the rope tension falls into the preset tension range, the frame outline is identified from the displayed image; Step 301: Determine the tensioning position in response to the border contour; Step 302: Control the preset rope devices to move alternately from the bottom position to the tensioned position; Step 303: Determine the tensioning direction in response to the tensioning position and the impurity position; Step 304: Control the preset rope device to move unidirectionally on the frame in the tension direction to pull the foreign object.

4. The method for displaying a holographic sand table according to claim 3, characterized in that, The impurity pulling method further includes: Step 305: When the preset rope devices move alternately from the bottom position to the tensioned position, update the device position; Step 306: Determine the adjustment length in response to the impurity location and the device position; Step 307: Control the rope device to adjust the length of the wiping rope according to the adjusted length, and update the rope tension; Step 308: When the rope tension exceeds the preset tension range, determine the correction length in response to the rope tension; Step 309: Control the rope device to adjust the length of the wiping rope according to the corrected length.

5. The method for displaying a holographic sand table according to claim 4, characterized in that, The impurity pulling method further includes: Step 310: Determine the range length in response to the tension length, adjustment length, and correction length; Step 311: Determine the wrapping length in response to the impurity location and the tension position; Step 312: Determine the length drop in response to the range length and the surrounding length; Step 313: Determine the impurity range in response to the length drop; Step 314: Based on the impurity range, control the preset warning device to issue an alarm.

6. The method for displaying a holographic sand table according to claim 5, characterized in that, The impurity pulling method further includes: Step 315: When the length drop is greater than 0, determine the point of sudden change in tension in response to the rope tension; Step 316: Determine the bending angle in response to the tension abrupt change point and the correction length; Step 317: Determine the tensile growth rate in response to the tensile abrupt change point; Step 318: Determine the side length radian in response to the stated tension growth rate; Step 319: Determine the impurity range in response to the impurity range, tensile change point, bend angle, and side length radian.

7. A holographic sand table display system, characterized in that, include: The acquisition module is used to acquire and display images and rope tension; A memory for storing a method for displaying a holographic sand table as described in any one of claims 1 to 6; The processor is the unit of memory that allows programs to be loaded and executed by the processor.

Images