Unloading platform monitoring method and system, intelligent terminal and storage medium

Abstract

The invention relates to a discharging platform monitoring method and system, an intelligent terminal and a storage medium, and relates to the field of building construction equipment.The method comprises the steps that tension on an inhaul cable is obtained through a force sensor on the inhaul cable, and the inhaul cable is used for fixing a cantilever part of a discharging platform; the pulling force is decomposed into supporting force components in the vertical direction according to the inclined pulling angle of the inhaul cable, and the inclined pulling angle is an included angle formed by the inhaul cable and the horizontal plane; calculating the sum of the supporting force components to obtain a supporting resultant force; and when the support resultant force is greater than the resultant force alarm value, an alarm signal is broadcasted to an operator. The device has the effects of displaying the relationship between the material weight and the safety load and ensuring the safety of operators.

Description

Technical Field

[0001] The present application relates to the field of construction equipment, and in particular to a method, system, intelligent terminal and storage medium for monitoring a discharge platform. Background Art

[0002] The unloading platform is a temporary construction platform commonly used in high-rise building construction, mainly used for material turnover. Among them, the cantilever unloading platform has been widely used in construction sites due to its unique structure and functional characteristics.

[0003] The relevant technology will set up an unloading platform on one side of the building. The tower crane will lift the materials required for construction from the ground to the unloading platform, and then the operators in the building will transport the materials from the unloading platform to the building.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the operators of the related technologies are unable to know the relationship between the weight of the materials on the unloading platform and the safe load of the unloading platform, which poses a great safety hazard. Summary of the invention

[0005] In order to demonstrate the relationship between material weight and safe load and ensure the safety of operators, the present application provides a method, system, intelligent terminal and storage medium for monitoring a discharge platform.

[0006] In the first aspect, the present application provides a method for monitoring a discharge platform, which adopts the following technical solution: A method for monitoring a discharging platform, comprising: The tension on the cable is obtained through a force sensor on the cable, and the cable is used to fix the cantilevered part of the unloading platform; The tension is decomposed into the supporting force component in the vertical direction according to the inclined angle of the cable. The inclined angle is the angle between the cable and the horizontal plane. Calculate the sum of the support force components to obtain the support resultant force; When the supporting force is greater than the force alarm value, an alarm signal is broadcast to the operator.

[0007] By adopting the above technical solution, the cable can be used to obtain the supporting force of the unloading platform, and when the supporting force is greater than the combined force alarm value, an alarm signal is broadcast to the operator to notify the operator to evacuate in time to ensure the personal safety of the operator.

[0008] Optionally, when the material enters the upper area of ​​the unloading platform, image information of the material is obtained; Predict the swing amplitude of the material based on the image information; Predict the probability of material falling based on the swing amplitude; When the drop probability is greater than the drop warning probability, the impact force of the material is predicted based on the weight of the material and the height of the material from the unloading platform. The impact force refers to the force exerted by the material on the unloading platform when the material falls onto the unloading platform. When the larger value of the impact force and the total weight of the material is greater than the combined force alarm value, the first side of the bottom plate of the unloading platform is lifted, the first side is the side away from the building, and an alarm signal is broadcast to the operator.

[0009] By adopting the above technical solution, when the material falls onto the unloading platform, the bottom plate of the unloading platform is lifted to form an inclined surface, and the material will fall directly onto the inclined surface. The inclined surface can reduce the impact of the material on the unloading platform, thereby reducing the probability of the unloading platform tipping over or falling.

[0010] Optionally, in the case where an anti-fall plate is provided between the unloading platform and the building, it is detected whether the anti-fall plate is a wooden formwork; If the anti-fall plate is a wooden formwork, calculate the ratio of the maximum bearing capacity of the anti-fall plate to the larger value to obtain the cosine value of the bottom plate angle; Calculate the bottom plate angle based on the cosine value; The first side of the bottom plate is lifted so that the bottom plate forms a bottom plate angle with the horizontal plane. An anti-falling structure is provided at the bottom of the anti-falling plate, and the anti-falling structure is used to receive materials.

[0011] By adopting the above technical solution, the materials are intercepted by the anti-fall structure after destroying the anti-fall plate, which can prevent the materials from falling to the ground and causing harm to people on the ground, and also prevent the materials from rushing into the building and causing harm to the operators inside the building.

[0012] Optionally, obtain a live image of the unloading platform; Identify the personnel operation area and material stacking area of ​​the unloading platform in the on-site image; When the support force is greater than the force warning value, detect whether there is an operator in the operator's operating area, and the force warning value is less than the force alarm value; If there is an operator, a temporary leaving signal is sent to the operator; after detecting that the operator has left the personnel operating area, the first side of the bottom plate of the unloading platform is lifted to allow the materials in the material stacking area to enter the building; If no operator is present, a first side of the floor of the unloading platform is raised.

[0013] By adopting the above technical solution, when there are a lot of materials on the unloading platform, the materials can be promptly allowed to enter the building by lifting the bottom plate, thereby reducing the probability of the unloading platform being overloaded.

[0014] Optionally, when the support resultant force is greater than the resultant force warning value, the material distribution in the material stacking area is identified through on-site images; According to the material distribution, detect whether the material distribution on the second side and the third side of the material stacking area is the same, and the side edges corresponding to the second side and the third side are perpendicular to the building; If the material distribution on the second side is different from the material distribution on the third side, the side with the larger material distribution is determined as the target side, and the target side of the bottom plate is raised to a preset angle; When it is detected that the material distribution on the second side is the same as the material distribution on the third side, the bottom plate is reset.

[0015] By adopting the above technical solution, the material distribution on the unloading platform can be more even, reducing the probability of the unloading platform tipping over.

[0016] Optionally, identifying on-site behavior of operators in the personnel operating area based on the on-site image; When an operator is detected to enter the material stacking area, the distance between the operator and the edge of the unloading platform is obtained; If the distance is less than the safe distance and the on-site behavior is a preset dangerous behavior, an alarm signal will be sent to the operator.

[0017] By adopting the above technical solution, when the operator is in danger, the operator can return to the safe area in time to ensure the safety of the operator.

[0018] Optionally, when it is detected that the tension on the target cable is greater than the critical tension, the sliding position of the material is predicted according to the position where the target cable is set on the unloading platform, and the first side of the bottom plate of the unloading platform is lifted; Determine the projection point of the sliding position on the ground; Generate the falling range of the material with the projection point as the center and the safety length as the radius; An evacuation signal is sent to the target person within the falling range, and the evacuation signal is used to instruct the target person to move out of the falling range in a safe route.

[0019] By adopting the above technical solution, when a rollover accident occurs on the unloading platform, the ground personnel can be reminded in time and instructed to evacuate quickly. In addition, by lifting the bottom plate, the reaction time of the operator is increased, thereby improving the operator's survival probability.

[0020] In the second aspect, the present application provides a unloading platform monitoring system, which adopts the following technical solution: A unloading platform monitoring system, comprising: An acquisition module is used to obtain tension, inclined angle, image information, on-site images, resultant force alarm value and resultant force warning value; A memory for storing a program of any of the above-mentioned methods for monitoring a discharge platform; The program in the processor and the memory can be loaded and executed by the processor to implement any of the above-mentioned unloading platform monitoring methods.

[0021] In a third aspect, the present application provides a smart terminal, which adopts the following technical solution: An intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute any of the above-mentioned unloading platform monitoring methods.

[0022] In a fourth aspect, the present application provides a computer storage medium capable of storing corresponding programs, which is convenient for displaying the relationship between material weight and safety load and ensuring the safety of operators, and adopts the following technical solutions: A computer-readable storage medium stores a computer program that can be loaded by a processor and execute any of the above-mentioned unloading platform monitoring methods.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The cable can be used to obtain the combined support force of the unloading platform, and when the combined support force is greater than the combined force alarm value, an alarm signal is broadcast to the operator to notify the operator to evacuate in time to ensure the personal safety of the operator; 2. When the material falls onto the unloading platform, the bottom plate of the unloading platform is lifted to form an inclined surface. The material will fall directly onto the inclined surface, which can reduce the impact of the material on the unloading platform and reduce the probability of the unloading platform tipping over or falling. 3. When the unloading platform rolls over, it can promptly remind the ground personnel and instruct them to evacuate quickly. By lifting the bottom plate, it can increase the reaction time of the operators and improve the survival probability of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a unloading platform provided in an embodiment of the present application.

[0025] Figure 2 It is a structural schematic diagram of a unloading platform provided in an embodiment of the present application.

[0026] Figure 3 This is a schematic diagram of a method for detecting a discharge platform provided in an embodiment of the present application. Figure 1 .

[0027] Figure 4 This is a schematic diagram of a method for detecting a discharge platform provided in an embodiment of the present application. Figure 2 .

[0028] Figure 5 This is a schematic diagram of a method for detecting a discharge platform provided in an embodiment of the present application. Figure 3 .

[0029] Figure 6 This is a schematic diagram of a method for detecting a discharge platform provided in an embodiment of the present application. Figure 4 .

[0030] Figure 7 This is a schematic diagram of a method for detecting a discharge platform provided in an embodiment of the present application. Figure 5 .

[0031] Figure 8 This is a schematic diagram of a method for detecting a discharge platform provided in an embodiment of the present application. Figure 6 .

[0032] Fig. 9 This is a schematic diagram of a method for detecting a discharge platform provided in an embodiment of the present application. Figure 7 . DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-9 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] The present application embodiment discloses a material unloading platform. Figure 1 The unloading platform includes a main structure 11 and a cable 12.

[0035] One section of the main structure 11 is fixed to the floor of the building to form a fixed part, and the other end is exposed from the floor to form a cantilevered part. The cantilevered part is used to place materials and for operators to stand. A cable 12 is provided on the main structure 11. One end of the cable 12 is fixed to the cantilevered part, and the other end is fixed to the outer surface of the building.

[0036] Furthermore, the bottom plate of the unloading platform is a liftable structure, please refer to Figure 2 The side of the bottom plate 111 away from the building is liftable. In some embodiments, a top support structure is provided at the bottom of the bottom plate 111 to lift one side of the bottom plate, or a cable is provided at the top of the bottom plate 111, which can pull up one side of the bottom plate to lift one side of the bottom plate.

[0037] The force sensor 13 is arranged on the cable 12, and is used to measure the tension received by the cable 12. The controller 14 is arranged on the main structure 11, and is used to receive the tension measured by the force sensor 13, and determine whether to broadcast an alarm signal to the operator according to the tension.

[0038] The present application embodiment discloses a method for monitoring a material unloading platform. Figure 3 , Figure 3 The following is a schematic diagram showing a process of a method for monitoring a discharge platform provided in an embodiment of the present application. Figure 1 , the method comprising: Step S301: obtaining the tension on the cable through a force sensor on the cable, where the cable is used to fix the cantilevered part of the unloading platform.

[0039] The force sensor is used to detect the tension on the cable. One end of the cable is fixed to the cantilever part of the unloading platform, and the other end is fixed to the outer surface of the building.

[0040] The cantilevered portion of the unloading platform is used to place materials and for operators to stand on. Further, the cantilevered portion is provided with a guardrail to prevent the operator from accidentally falling from the unloading platform, and the height of the guardrail can be 1.1 meters to 1.4 meters.

[0041] In some embodiments, the force sensors may be disposed at both ends of the cable or in the middle of the cable.

[0042] Step S302: decomposing the pulling force into supporting force components along the vertical direction according to the inclined angle of the cable, where the inclined angle is the angle between the cable and the horizontal plane.

[0043] Due to the angle between the cable and the horizontal plane, the tension of the cable is decomposed into a supporting force component along the vertical direction and a pulling force component along the horizontal direction, among which only the supporting force component can provide support for the unloading platform.

[0044] Optionally, take a point on the cable and draw a perpendicular line from the point to the horizontal plane to obtain a first intersection of the perpendicular line and the horizontal plane; record a second intersection of the straight line where the cable is located and the horizontal plane; connect the first intersection and the second intersection to obtain a horizontal straight line; and use the angle between the straight line where the cable is located and the horizontal straight line as the inclined angle. In some embodiments, the inclined angle is written into the controller of the unloading platform after the unloading platform is set up.

[0045] Optionally, an angle sensor is provided on the cable, and the inclined angle can be obtained through the angle sensor.

[0046] For example, if the inclined angle is α and the tension is F, then the supporting force component F in the vertical direction is N =F*sinα.

[0047] Step S303: Calculate the sum of the supporting force components to obtain the supporting resultant force.

[0048] Since the unloading platform is provided with a plurality of cables, each cable is used to support the unloading platform, it is necessary to sum the supporting force components provided by each cable to obtain the supporting resultant force.

[0049] Step S304: When the supporting force is greater than the force alarm value, an alarm signal is broadcast to the operator.

[0050] The combined force alarm value is determined according to the maximum load-bearing capacity of the unloading platform, and the combined force alarm value is less than the maximum load-bearing capacity of the unloading platform. Exemplarily, the combined force alarm value is 95% of the maximum load-bearing capacity of the unloading platform. The maximum load-bearing capacity of the unloading platform is related to the properties of the unloading platform itself, and the maximum load-bearing capacity of the unloading platform can refer to the parameters provided by the manufacturer of the unloading platform.

[0051] In some embodiments, the controller plays an alarm signal through a speaker to alert operators near the unloading platform. In some other embodiments, the controller can determine the operator on the unloading platform and send an alarm signal to the mobile terminal held by the operator, and the mobile terminal can play the alarm signal. For example, a camera is set on the unloading platform, and the controller determines the operator on the unloading platform through the camera, and sends an alarm message to the mobile terminal held by the operator, and the mobile terminal plays a voice "Warning, the unloading platform is about to reach the upper limit of the load-bearing capacity."

[0052] In summary, by adopting the above technical solution, the cable can be used to obtain the supporting force of the unloading platform, and when the supporting force is greater than the combined force alarm value, an alarm signal is broadcast to the operator to notify the operator to evacuate in time to ensure the personal safety of the operator.

[0053] In the following embodiment, the materials are placed on the unloading platform by a tower crane. When the materials reach the upper area of ​​the unloading platform, they may fall due to the safety awareness of the construction site personnel, the operating proficiency of the tower crane driver and the influence of wind. When the materials fall onto the unloading platform, the unloading platform may be damaged. Therefore, in order to reduce the damage to the unloading platform caused by the above situation, the embodiment of the present application discloses a method for monitoring the unloading platform. Figure 4 , Figure 4 The following is a schematic diagram showing a process of a method for monitoring a discharge platform provided in an embodiment of the present application. Figure 2 , the method comprising: Step S401: When the material enters the upper area of ​​the unloading platform, image information of the material is obtained.

[0054] Optionally, the unloading platform is equipped with a camera, which can capture images above the unloading platform in real time. When the camera captures the material entering the upper area of ​​the unloading platform, image information of the material is obtained.

[0055] The upper area of ​​the unloading platform is located directly above the unloading platform, and the size of the upper area is the same as the projection of the unloading square on the horizontal plane. Further, the distance from the upper area to the unloading area can be adjusted according to actual needs, and the embodiment of the present application does not specifically limit this.

[0056] In some other embodiments, the unloading platform is installed with an infrared sensor, which is used to monitor whether there is an object entering the upper area of ​​the unloading platform. When the infrared sensor determines that an object has entered the upper area of ​​the unloading platform, the image information of the object is obtained through the camera on the unloading platform; if it is determined that the object is a material, the aforementioned image information is extracted; if it is determined that the object is not an object, the aforementioned image information is discarded.

[0057] Optionally, the image information refers to a video or image sequence.

[0058] Step S402: predicting the swing amplitude of the material according to the image information.

[0059] The swing amplitude refers to the distance from the center position to the maximum deviation of the material during the swing process. The center position refers to the position of the material when there is no swing.

[0060] Optionally, record the change of the swing amplitude of the material in the image information, the change of the swing amplitude is used to indicate the change of the swing amplitude of the material over time; generate a fitting curve according to the change of the swing amplitude; and search the swing amplitude at a future moment in the fitting curve.

[0061] Optionally, record the swing amplitude change of the material in the image information; call the swing amplitude prediction model, perform data processing on the swing amplitude change, and predict the swing amplitude of the material. The aforementioned swing amplitude prediction model belongs to any one of a convolutional neural network, a recurrent neural network, a deep neural network, and a hybrid neural network.

[0062] Step S403: predicting the probability of material falling according to the swing amplitude.

[0063] In some embodiments, the drop probability of the material is searched in the mapping relationship according to the swing amplitude, and the aforementioned mapping relationship is used to record the relationship between the swing amplitude and the drop probability.

[0064] In some embodiments, if the swing amplitude is greater than or equal to a preset swing amplitude, it is considered that the material will fall; if the swing amplitude is less than the preset swing amplitude, it is considered that the material will not fall.

[0065] Step S404: When the drop probability is greater than the drop warning probability, predict the impact force of the material according to the weight of the material and the height of the material from the unloading platform. The impact force refers to the force exerted by the material on the unloading platform when the material falls onto the unloading platform.

[0066] For example, the speed of the material when it reaches the unloading platform is calculated according to the height of the material from the unloading platform; the momentum of the material is calculated according to the product of the speed and the weight of the material; and the impact force is obtained by calculating the ratio of the momentum to the contact time, wherein the contact time is a preset empirical value.

[0067] Optionally, the weight of the material is determined by the type of material, and the controller of the unloading platform stores the unit weight of various materials. Optionally, before the tower crane transports the material, the ground personnel need to pre-write the weight of the material, and the weight of the material in this step can be directly obtained.

[0068] Step S405: When the larger value of the impact force and the total weight of the material is greater than the combined force alarm value, lift the first side of the bottom plate of the unloading platform, where the first side is the side away from the building, and broadcast an alarm signal to the operator.

[0069] After lifting the first side of the bottom plate of the unloading platform, the bottom plate will form an inclined plane compared to the horizontal plane. After the material falls on the inclined plane, the impact force and gravity of the material on the unloading platform will be decomposed into the force perpendicular to the bottom plate and the force horizontal to the bottom plate. Only the force perpendicular to the bottom plate will act on the unloading platform and affect the unloading platform, while the force horizontal to the bottom plate will not. Therefore, lifting one side of the bottom plate can effectively reduce the force of the material on the unloading platform and reduce the probability of the unloading platform tipping over or falling.

[0070] For example, please refer to Figure 2 , lift one side of the bottom plate 111 of the unloading platform.

[0071] In some embodiments, the angle between the bottom plate and the horizontal plane is a fixed angle, or the angle between the bottom plate and the horizontal plane is positively correlated with the larger value.

[0072] In actual scenarios, there will be a gap between the unloading platform and the building, and an anti-fall plate is set on the gap, and an anti-fall structure is set at the bottom of the anti-fall plate, wherein the anti-fall plate includes two types: wooden formwork and metal plate. In the case where the anti-fall plate is a wooden formwork, the embodiment of the present application allows the material to destroy the anti-fall plate, so that the material is caught by the anti-fall structure, thereby preventing the material from rushing into the building and causing harm to the operators inside, and the inclined surface and the anti-fall plate can absorb the impact force of the material, so that the material can be caught by the anti-fall structure. Figure 5 , Figure 5 The following is a schematic diagram showing a process of a method for monitoring a discharge platform provided in an embodiment of the present application. Figure 3 , the method comprising: Step S501: When an anti-fall plate is provided between the unloading platform and the building, it is detected whether the anti-fall plate is a wooden formwork.

[0073] In some embodiments, an anti-fall plate image is acquired through a camera; and the anti-fall plate image is processed by an image recognition model to obtain the type of the anti-fall plate.

[0074] In some embodiments, the unloading platform stores types of anti-fall plates in advance.

[0075] In some other embodiments, an image of the anti-fall plate is acquired through a camera; the strength characteristics of the anti-fall plate are determined based on the image of the anti-fall plate, the strength characteristics include at least one of shape characteristics, structural characteristics, and crack characteristics, wherein the shape characteristics are used to represent the shape of the anti-fall plate, the structural characteristics are used to represent the structural composition of the anti-fall plate, and the crack characteristics are used to indicate whether the anti-fall plate has cracks as well as the number and position of the cracks; the fracture probability of the anti-fall plate is predicted based on the strength characteristics; and when the fracture probability is greater than the preset fracture probability, an alarm signal is sent to the operator.

[0076] Step S502: If the anti-fall plate is a wooden formwork, the ratio of the maximum bearing capacity of the anti-fall plate to the larger value is calculated to obtain the cosine value of the bottom plate angle.

[0077] In some embodiments, the material will move along the bottom plate. Since the bottom plate has a certain angle with the horizontal plane, the impact force of the material is decomposed into a force horizontal to the bottom plate. The force must be at least the same as the maximum bearing capacity of the anti-fall plate to break through the anti-fall plate.

[0078] Optionally, the unloading platform stores in advance the maximum bearing capacity of the anti-fall plate.

[0079] Step S503: Calculate the bottom plate angle according to the cosine value.

[0080] Exemplarily, the cosine value is processed by an arccosine function to obtain the bottom plate angle.

[0081] Step S504: lift the first side of the bottom plate so that the bottom plate forms a bottom plate angle with the horizontal plane, and an anti-falling structure is provided at the bottom of the anti-falling plate, and the anti-falling structure is used to receive the material.

[0082] The anti-fall structure is an anti-fall net or an anti-fall plate.

[0083] In some other embodiments, the sine value is calculated according to the cosine value; the product of the sine value and the length of the bottom plate is calculated to obtain the lifting height of the bottom plate; and the first side of the bottom is lifted according to the lifting height.

[0084] In summary, by adopting the above technical solution, the cable can be used to obtain the supporting force of the unloading platform, and when the supporting force is greater than the combined force alarm value, an alarm signal is broadcast to the operator to notify the operator to evacuate in time to ensure the personal safety of the operator.

[0085] In the following embodiment, when there are a lot of materials on the unloading platform, the materials can be sent into the building by lifting the bottom plate to prevent too much material on the unloading platform. Figure 6 , Figure 6 The following is a schematic diagram showing a process of a method for monitoring a discharge platform provided in an embodiment of the present application. Figure 4 , the method comprising: Step S601: Acquire the on-site image of the unloading platform.

[0086] In some embodiments, a camera is provided on the unloading platform, and the on-site image of the unloading platform can be acquired through the camera.

[0087] In some other embodiments, a camera is disposed on the periphery of the unloading platform, the camera can acquire an image of the unloading platform, and the camera is connected to a controller on the unloading platform.

[0088] Step S602: Identify the personnel operation area and material stacking area of ​​the unloading platform in the on-site image.

[0089] The personnel operation area is the area where the operator stands. The material stacking area is the area on the unloading platform where the materials are placed. Both the personnel operation area and the material stacking area are located on the bottom plate. Optionally, the personnel operation area is on the side close to the building, and the material stacking area is on the side away from the building.

[0090] In some embodiments, a dividing line is provided on the unloading platform, and the dividing line divides the entire unloading platform into a personnel operation area and a material stacking area. Further, the dividing line is identified in the scene image; and the personnel operation area and the material stacking area of ​​the unloading platform are identified according to the dividing line.

[0091] Step S603: When the support resultant force is greater than the resultant force warning value, detect whether there is an operator in the operator operating area, and the resultant force warning value is less than the resultant force alarm value.

[0092] The combined force warning value is determined according to the maximum load-bearing capacity of the unloading platform, and the combined force warning value is less than the combined force alarm value. For example, if the combined force alarm value is 95% of the maximum load-bearing capacity of the unloading platform, the combined force warning value may be 85% of the maximum load-bearing capacity of the unloading platform.

[0093] Step S604: If there is an operator, a temporary leave signal is sent to the operator.

[0094] The temporary leave signal is used to instruct the operator to leave the unloading platform. In some embodiments, the temporary leave signal is played by the controller on the unloading platform through a speaker. In some other embodiments, the controller can determine the operator on the unloading platform and send the temporary leave signal to the mobile terminal held by the operator, and the mobile terminal can play the temporary leave signal.

[0095] Step S605: After detecting that the operator leaves the operating area, lift the first side of the bottom plate of the unloading platform to allow the materials in the material stacking area to enter the building.

[0096] In some embodiments, the bottom plate angle (or bottom plate lifting height) of the unloading platform is a preset fixed value. In some embodiments, the bottom plate angle (or bottom plate lifting height) of the unloading platform is related to the type of material. For example, when the material is a brick, the bottom plate angle can be set to 40 degrees; when the material is a steel pipe, the bottom plate angle can be set to 30 degrees.

[0097] Step S606: If there is no operator, lift the first side of the bottom plate of the unloading platform.

[0098] When no operator is present, the first side of the floor of the unloading platform can be directly lifted.

[0099] In other aspects of this embodiment, since the on-site image can also reflect the distribution of materials on the unloading platform, the uneven distribution of materials in the actual scene is also an important factor causing the unloading platform to roll over. Therefore, after acquiring the on-site image, this embodiment will determine whether the materials in the unloading platform are unevenly distributed. If so, one side of the bottom plate will be lifted to move the materials, thereby promoting the uniform distribution of materials on the unloading platform. Please refer to Figure 7 , Figure 7 The following is a schematic diagram showing a process of a method for monitoring a discharge platform provided in an embodiment of the present application. Figure 5 The method includes steps S701 to S704, the specific contents of which are as follows: Step S701: when the support resultant force is greater than the resultant force warning value, the material distribution in the material stacking area is identified through the on-site image.

[0100] Material distribution is used to indicate the quantity distribution or density of materials on the material platform.

[0101] In some embodiments, the material stacking area in the on-site image is divided into a first area and a second area, the first area corresponds to the second side of the material stacking area, the second area corresponds to the third side of the material stacking area, and the area of ​​the first area and the second area are the same; the quantity of materials in the first area and the second area is identified to obtain the material distribution situation.

[0102] Step S702: According to the material distribution, detect whether the material distribution on the second side and the third side of the material stacking area is the same, and the side edges corresponding to the second side and the third side are perpendicular to the building.

[0103] In some embodiments, a comparison is made to see whether the quantities of materials on the second side and the third side of the material storage area are the same.

[0104] In some embodiments, a comparison may be made as to whether the quantities of materials in the first area and the second area are the same.

[0105] Step S703: If the material distribution on the second side is different from the material distribution on the third side, the side with a larger material distribution is determined as the target side, and the target side of the bottom plate is lifted to a preset angle.

[0106] In some embodiments, the preset angle is a fixed value. In some embodiments, due to the different shapes of different types of materials, the mobility of different types of materials is different. Therefore, the preset angle is related to the type of material. For example, when the material is a steel pipe, the preset angle may be 10 degrees; when the material is a brick, the preset angle may be 30 degrees.

[0107] In other embodiments, if the material distribution on the second side is the same as the material distribution on the third side, the process ends.

[0108] In other embodiments, if the material distribution on the first side of the bottom plate is greater than the material distribution on the first side of the bottom plate, the first side of the bottom plate is raised to a preset angle.

[0109] Step S704: when it is detected that the material distribution on the second side is the same as the material distribution on the third side, the bottom plate is reset.

[0110] In summary, by adopting the above technical solution, the material distribution on the unloading platform can be more even, reducing the probability of the unloading platform tipping over.

[0111] In other aspects of this embodiment, since the on-site image can also obtain the behavior and status of the operator, further, the on-site image can be used to detect whether the operator has any dangerous behavior and provide a warning. Figure 8 , Figure 8 The following is a schematic diagram showing a process of a method for monitoring a discharge platform provided in an embodiment of the present application. Figure 6 The method includes steps S801 to S804, the specific contents of which are as follows: Step S801: Identify the on-site behavior of an operator in an operating area based on the on-site image.

[0112] In some embodiments, a behavior recognition model is called to perform behavior recognition on the on-site image to obtain the on-site behavior of the operator.

[0113] Exemplarily, on-site behavior includes, but is not limited to, at least one of carrying behavior, observing behavior, recording behavior, and other behaviors.

[0114] Step S802: When it is detected that an operator enters the material storage area, the distance between the operator and the edge of the unloading platform is obtained.

[0115] In some embodiments, the distance between the operator and the edge of the unloading platform refers to the shortest distance from the operator to the edge of the unloading platform.

[0116] In some embodiments, the distance from the operator to the edge of the unloading platform is obtained; the shortest distance is taken as the distance required for this step.

[0117] Step S803: If the distance is less than the safety distance and the on-site behavior is a preset dangerous behavior, an alarm signal is sent to the operator.

[0118] In some embodiments, the safety distance is a preset value, for example, the safety distance is 0.2 meters.

[0119] In some embodiments, the safety distance is related to the on-site behavior. For example, when the operator is performing observation behavior, the safety distance can be set to 0.1 meters; when the operator is performing carrying behavior, the safety distance can be set to 0.3 meters.

[0120] In summary, by adopting the above technical solution, when the operator is in danger, the operator can return to the safe area in time to ensure the safety of the operator.

[0121] In the following embodiment, if too much material is piled on the unloading platform at one time, it may cause the unloading platform to overturn in a short period of time, causing casualties. In order to reduce the probability of casualties, this embodiment will lift the first side of the bottom plate of the unloading platform when the unloading platform is about to overturn, and predict the falling range of the material. On the one hand, the lifting of the bottom plate will cause the operator's center of gravity to be biased toward the building. Even if the operator falls, he will fall into the building to prevent the operator from falling from the building. In addition, the lifting of the bottom plate can offset and increase the operator's reaction time, thereby reducing the probability of casualties. On the other hand, if the unloading platform overturns, one side of the bottom plate will deflect downward, causing the material to slide from the same sliding position. Therefore, the possible falling range of the material can be calculated according to the sliding position, and then information can be sent to all personnel in the falling range to notify them to evacuate quickly. Refer to Fig. 9 , Fig. 9 The following is a schematic diagram showing a process of a method for monitoring a discharge platform provided in an embodiment of the present application. Figure 7 , the method comprising: Step S901: When it is detected that the tension on the target cable is greater than the critical tension, the material sliding position is predicted according to the position of the target cable on the unloading platform, and the first side of the bottom plate of the unloading platform is lifted.

[0122] The rollover of the unloading platform is accompanied by the breakage of the cable. Therefore, this embodiment determines whether the unloading platform will rollover by detecting whether the cable is broken. Before the cable breaks, the tension on the cable will suddenly increase to exceed the critical tension. Therefore, whether the cable will break can be determined by whether the tension on the cable exceeds the critical tension.

[0123] The critical tension is the maximum tension that the cable can withstand. When the cable is subjected to a tension greater than the critical tension, the cable will break, undergo irreversible deformation, and other damage, affecting the strength of the cable.

[0124] In some embodiments, the position where the target cable is set on the unloading platform can be considered as the sliding position of the material.

[0125] Step S902: Determine the projection point of the sliding position on the ground.

[0126] Draw a vertical line from the sliding position to the ground, and the intersection of the vertical line and the ground is the projection point.

[0127] Step S903: Generate the falling range of the material with the projection point as the center and the safety length as the radius.

[0128] In some embodiments, the safety length is a preset fixed value, for example, the safety length is 50 meters.

[0129] In some embodiments, the safety length is positively correlated with the height of the unloading platform. For example, when the unloading platform is located at 9 meters, the safety length is 20 meters; when the unloading platform is located at 20 meters, the safety length is 30 meters.

[0130] Step S904: Send an evacuation signal to the target person in the falling range, where the evacuation signal is used to indicate a safe movement route for the target person to leave the falling range.

[0131] In some embodiments, the moving direction and current position of the target person are obtained; the shortest path from the current position to the boundary of the falling range is determined; and an evacuation signal is generated according to the moving direction and the shortest path. For example, the evacuation signal indicates "evacuate to the front", and for another example, the evacuation signal indicates "evacuate to the back".

[0132] In some embodiments, the target person in the falling range can be determined by a terminal carried by the target person, and the moving direction and current position of the target person can be determined. In some embodiments, the target person in the falling range can be determined by a camera, and the moving direction and current position of the target person can be determined.

[0133] Furthermore, when the target person leaves the falling range and the distance between the target person and the falling range reaches the safe observation distance, a safety signal is sent to the target person to indicate that the target person has reached a safe position.

[0134] In summary, by adopting the above-mentioned technical solution, when a rollover accident occurs on the unloading platform, the ground personnel can be promptly reminded and instructed to evacuate quickly, and by lifting the bottom plate, the reaction time of the operator is increased, thereby improving the operator's survival probability.

[0135] Based on the same inventive concept, the embodiment of the present application provides a unloading platform monitoring system, including: An acquisition module is used to obtain tension, inclined angle, image information, on-site images, resultant force alarm value and resultant force warning value; A memory for storing a program of any of the above-mentioned methods for monitoring a discharge platform; The program in the processor and the memory can be loaded and executed by the processor to implement any of the above-mentioned unloading platform monitoring methods.

[0136] In summary, through the above technical scheme, the cable can be used to obtain the supporting force of the unloading platform, and when the supporting force is greater than the combined force alarm value, an alarm signal is broadcast to the operator to notify the operator to evacuate in time to ensure the personal safety of the operator.

[0137] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is 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 refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0138] An embodiment of the present application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and execute a method for monitoring a discharge platform.

[0139] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0140] Based on the same inventive concept, an embodiment of the present application provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute a method for monitoring a discharge platform.

[0141] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is 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 refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0142] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for monitoring a discharging platform, characterized in that: The method comprises: The tension on the cable is obtained by a force sensor on the cable, and the cable is used to fix the cantilevered part of the unloading platform; Decomposing the pulling force into a supporting force component in a vertical direction according to the inclined pulling angle of the cable, wherein the inclined pulling angle is the angle between the cable and a horizontal plane; Calculating the sum of the supporting force components to obtain the supporting resultant force; When the supporting combined force is greater than the combined force alarm value, an alarm signal is broadcast to the operator.

2. The unloading platform monitoring method according to claim 1, characterized in that: The method further comprises: When the material enters the upper area of ​​the unloading platform, acquiring image information of the material; predicting the swing amplitude of the material according to the image information; Predicting the probability of the material falling according to the swing amplitude; When the falling probability is greater than the falling warning probability, the impact force of the material is predicted according to the weight of the material and the height of the material from the unloading platform, where the impact force refers to the force exerted by the material on the unloading platform when the material falls onto the unloading platform; When the larger value of the impact force and the total gravity of the material is greater than the combined force alarm value, the first side of the bottom plate of the unloading platform is lifted, the first side is the side away from the building, and the alarm signal is broadcast to the operator.

3. The unloading platform monitoring method according to claim 2, characterized in that: The method further comprises: In the case where an anti-falling plate is provided between the unloading platform and the building, detecting whether the anti-falling plate is a wooden formwork; If the anti-falling plate is a wooden formwork, the ratio of the maximum bearing capacity of the anti-falling plate to the larger value is calculated to obtain the cosine value of the bottom plate angle; Calculate the bottom plate angle according to the cosine value; The first side of the bottom plate is lifted so that the bottom plate and the horizontal plane form the bottom plate included angle; an anti-falling structure is provided at the bottom of the anti-falling plate, and the anti-falling structure is used to receive the material.

4. The unloading platform monitoring method according to claim 1, characterized in that: The method further comprises: Acquiring an on-site image of the unloading platform; Identifying a personnel operation area and a material stacking area of ​​the unloading platform in the on-site image; In the case where the supporting force is greater than the force warning value, detecting whether the operator exists in the personnel operating area, and the force warning value is less than the force alarm value; If the operator exists, a temporary leaving signal is sent to the operator; after detecting that the operator leaves the personnel operating area, the first side of the bottom plate of the unloading platform is lifted to allow the materials in the material stacking area to enter the building; If the operator is not present, the first side of the bottom plate of the unloading platform is raised.

5. The unloading platform monitoring method according to claim 4, characterized in that: The method further comprises: When the supporting force is greater than the force warning value, identifying the material distribution in the material stacking area through the on-site image; According to the material distribution, detecting whether the material distribution on the second side and the third side of the material stacking area is the same, and the side edges corresponding to the second side and the third side are perpendicular to the building; If the material distribution on the second side is different from the material distribution on the third side, determining the side with a larger material distribution as the target side, and raising the target side of the bottom plate to a preset angle; When it is detected that the material distribution on the second side is the same as the material distribution on the third side, the bottom plate is reset.

6. The unloading platform monitoring method according to claim 4, characterized in that: The method further comprises: identifying, according to the on-site image, on-site behavior of the operator in the personnel operation area; When it is detected that the operator enters the material stacking area, obtaining the distance between the operator and the edge of the unloading platform; If the distance is less than the safe distance and the on-site behavior is a preset dangerous behavior, an alarm signal is sent to the operator.

7. The unloading platform monitoring method according to claim 1, characterized in that: The method further comprises: When it is detected that the tension on the target cable is greater than the critical tension, predicting the sliding position of the material according to the position where the target cable is set on the unloading platform, and lifting the first side of the bottom plate of the unloading platform; Determine the projection point of the sliding position on the ground; Taking the projection point as the center and the safety length as the radius, the falling range of the material is generated; An evacuation signal is sent to the target person within the falling range, wherein the evacuation signal is used to indicate a safe movement route for the target person to leave the falling range.

8. A discharge platform monitoring system, characterized in that: The system comprises: An acquisition module is used to obtain tension, inclined angle, image information, on-site images, resultant force alarm value and resultant force warning value; A memory for storing a program of a method for monitoring a discharge platform according to any one of claims 1 to 7; The program in the processor memory can be loaded and executed by the processor to implement the unloading platform monitoring method as claimed in any one of claims 1 to 7.

9. An intelligent terminal, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes any one of the methods of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the method according to any one of claims 1 to 7.

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