CN116630872A - Building site safety monitoring method based on three-dimensional modeling - Google Patents

Abstract

The invention provides a three-dimensional modeling-based safety monitoring method for a construction site, which relates to the technical field of construction site safety monitoring, and aims to realize more comprehensive monitoring of the construction site, including collecting pictures of the entire area in the construction site; The real-time position of the staff in the construction site; the real-time three-dimensional model of the construction site map is constructed through the pictures of the whole area in the construction site and the real-time position of the staff; real-time monitoring of the safety monitoring target is carried out through multiple sets of sensors and the real-time three-dimensional model Accident monitoring, abnormal situation monitoring and construction site environment monitoring; report the results of accident monitoring, abnormal situation monitoring and construction site environment monitoring remotely. The invention has the advantages of comprehensive monitoring and reducing the accident rate of construction sites.

Description

A method for safety monitoring of construction site based on 3D modeling

technical field

The invention relates to the technical field of construction site safety monitoring, in particular to a three-dimensional modeling-based construction site safety monitoring method.

Background technique

A construction site refers to a location where construction projects are being developed and civil engineering is being carried out. The scope is often closed by hoardings, barbed wire or walls to restrict the entry and exit of personnel, materials, machinery and vehicles.

Due to the complex geographical environment and equipment placement conditions in the construction site, the construction site is also a high incidence of various accidents. The existing monitoring systems in construction sites are relatively single and simple, mainly for the monitoring of abnormal intrusions and ordinary environments. It is difficult to realize all-round monitoring of construction site conditions, and it is still difficult to control the occurrence of negative events such as accidents.

In order to better reduce the accident rate in the construction site, more comprehensive monitoring of the construction site is required.

Contents of the invention

The purpose of the present invention is to provide a safety monitoring method for a construction site based on three-dimensional modeling, the purpose of which is to realize more comprehensive monitoring of the construction site.

Embodiments of the invention are achieved through the following technical solutions:

A method for safety monitoring of a construction site based on three-dimensional modeling, comprising the following steps:

Collect images of the entire area of the construction site;

Collect the real-time location of the staff on the construction site;

Construct a real-time 3D model of the construction site map through the pictures of the whole area in the construction site and the real-time positions of the staff;

Real-time accident monitoring, abnormal scene monitoring and construction site environment monitoring are performed on safety monitoring targets through multiple sets of sensors and the real-time three-dimensional model;

Remotely report the results of accident monitoring, abnormal situation monitoring and construction site environment monitoring.

Preferably, the method for constructing the real-time three-dimensional model of the construction site map through the pictures of the whole area in the construction site and the real-time positions of the staff is:

Installation of multiple binocular cameras within a construction site;

Start the binocular camera to collect the picture of the whole area in the construction site, and obtain the image data and corresponding three-dimensional coordinate information;

Construct a three-dimensional model of the construction site map according to the image data and corresponding three-dimensional coordinate information;

Real-time recognition of the human body and the global coordinates corresponding to its position through the binocular camera to obtain the position information of the human body;

The real-time three-dimensional model of the construction site map is obtained by adding the human body position information to the three-dimensional model of the construction site map.

Preferably, the accident monitoring includes fire monitoring, equipment failure monitoring and staff safety monitoring or accident monitoring.

Preferably, the fire monitoring is realized by setting a plurality of smoke alarms outdoors and setting cameras indoors and performing fog recognition through the image collection results of the cameras; realizing the equipment failure monitoring by setting an operation status monitoring module for each equipment ; By collecting the posture of the staff on the construction site for fall detection to achieve safety monitoring or accident monitoring.

Preferably, the abnormal scene monitoring includes displacement and dumping monitoring of key monitoring objects.

Preferably, the method for monitoring the displacement and dumping of the key monitoring object is:

Select and mark a plurality of groups of key monitoring objects, extract a reference top view for each key monitoring object according to the real-time three-dimensional model, and set a warning area as the monitoring box of the key monitoring object;

Extract the monitoring box on the key monitoring object when no abnormality occurs as a reference box;

Periodically extract the top view for inspection through the real-time three-dimensional model, and use the monitoring box on the key monitoring object as the inspection box;

Both the reference box and the check box are circumscribed quadrilaterals of the circumcircle of the top view of the key monitoring object;

Combining the top view for inspection and the top view for reference, calculate the overlapping area of the inspection box and the reference box:

If the overlapping area is less than 85% of the total area of the reference frame, it is judged that the key monitoring object has moved and/or dumped, and an early warning of equipment displacement and dumping is performed.

Preferably, the abnormal situation monitoring also includes safety distance monitoring;

Set a safety distance for each of the key monitoring objects;

Install a positioning device in the worker's helmet, and display the real-time position of the worker on the 3D model when indoors, and import worker information;

When a worker is close to the key monitoring object, that is, the distance from the real-time position of the worker to the check box is less than the safety distance of the corresponding key monitoring object, a safety distance warning will be performed, and the location of the worker and the extraction of worker information will be assisted. .

Preferably, the construction site environment monitoring is realized through a meteorological monitoring module.

Preferably, the objects monitored by the meteorological monitoring module include future wind power, rainfall level, lightning situation, extremely high temperature weather and extremely low temperature weather;

According to the real-time three-dimensional model of the construction site map, the topography of each area in the construction site is obtained;

Set rainfall level thresholds for each region according to the terrain conditions of each region;

When rainfall is detected in the future, an early warning will be issued if the rainfall level is greater than the rainfall level threshold in a certain area.

Preferably, the real-time three-dimensional model is also used to realize the navigation of the smart car and the navigation of the smart UAV.

The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

The present invention monitors a variety of situations, including accidents that are prone to occur on the construction site, the environment where the construction site is located, and any abnormal conditions in the construction site.

In the present invention, both fire monitoring and equipment failure monitoring in accident monitoring can be realized through conventional sensors, while the safety accident monitoring of staff can be realized through position and posture detection;

In the present invention, the monitoring of abnormal situations is mainly the monitoring of the displacement and dumping of the key monitoring object, and the displacement and dumping of the monitoring object can be considered at the same time through one calculation step, which reduces the amount of calculation;

The present invention can implement both smart car navigation and smart UAV navigation on the completed three-dimensional modeling, and can realize purposeful navigation for vehicles on the construction site, aerial photography, or based on smart car navigation, such as using Intelligent trolley realizes material handling;

The present invention is mainly based on three-dimensional modeling, and the technology is mature and excellent, easy to implement, and convenient to popularize and apply.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic flow chart of a safety monitoring method for a construction site based on three-dimensional modeling provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of a key monitoring object displacement and dumping monitoring case provided by Embodiment 4 of the present invention;

Fig. 3 is a schematic diagram of an example of calculating the distance from the real-time position of the worker to the inspection box provided by Embodiment 4 of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" " and other indications are based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship that is usually placed when the application product is in use, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it also needs to be explained that, unless otherwise clearly stipulated and limited, if the terms "setting", "installation", "connection" and "connection" appear, they should be understood in a broad sense, for example, it can be a fixed The connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Example 1

Referring to Fig. 1, the present embodiment provides a method for safety monitoring of a construction site based on three-dimensional modeling, comprising the following steps:

Step S1: collecting pictures of the whole area in the construction site;

Step S2: collect the real-time location of the staff in the construction site;

Step S3: Construct a real-time three-dimensional model of the construction site map through the pictures of the whole area in the construction site and the real-time positions of the staff;

Step S4: Real-time accident monitoring, abnormal scene monitoring and construction site environment monitoring are carried out on the safety monitoring target through multiple sets of sensors and the real-time three-dimensional model;

Step S5: Remotely report the results of the accident monitoring, abnormal situation monitoring and construction site environment monitoring.

In order to realize the above method, the following modules can be set up, including an image acquisition module, a three-dimensional model building module, a personnel positioning module, an intelligent security real-time monitoring module, and a monitoring platform;

The image acquisition module is set up to collect images of the entire area in the construction site. The image acquisition module here can use multiple sets of cameras to collect images of the entire area through the cameras for subsequent image splicing and other processing to achieve three-dimensionalization;

The personnel positioning module is set to collect the real-time position of the staff in the construction site; the three-dimensional model building module is set to construct the real-time three-dimensional model of the construction site map according to the acquisition content of the image acquisition module and the personnel positioning module; The real-time monitoring module is used for real-time accident monitoring, abnormal scene monitoring and construction site environment monitoring on the safety monitoring target; a monitoring platform can also be set to receive and display the real-time 3D model, so that the construction site situation can be visualized.

When remotely reporting the results of accident monitoring, abnormal situation monitoring and construction site environment monitoring, abnormal warnings can also be specially set during the reporting process. The results of accident monitoring, abnormal scene monitoring and construction site environment monitoring include the monitored object, the monitored state structure and the location of the object.

To sum up, it is to monitor the conditions in the construction site in an all-round way, and to locate, display and mark the corresponding operation problems and accidents on the monitoring platform in a timely and convenient manner.

In particular, all the calculations and judgments can be realized by transferring the data to the processing module in a unified manner.

The main function of 3D modeling is to more accurately identify the position of the staff, and more intuitively perform 3D display, which is convenient for the back-end staff to view. And when the monitored abnormality occurs, it can also detect and display the location of the abnormality more accurately and intuitively, and can also provide an excellent guarantee for the subsequent addition of more accurate navigation and other functions, and provide further protection for the safety of the construction site .

Example 2

In this embodiment, based on the technical solution of Embodiment 1, the method for collecting the real-time positions of the workers in the construction site is further described.

In this embodiment, the method of collecting the real-time position of the staff in the construction site in step S2 is:

Installation of multiple binocular cameras within a construction site;

Start the binocular camera to collect the picture of the whole area in the construction site, and obtain the image data and corresponding three-dimensional coordinate information;

Construct the 3D model of the construction site map according to the image data and the corresponding 3D coordinate information; when constructing the 3D model of the construction site map, it is usually completed by using technologies such as computer vision and image recognition;

Real-time recognition of the human body and the global coordinates corresponding to its position through the binocular camera to obtain the position information of the human body;

The real-time three-dimensional model of the construction site map is obtained by adding the human body position information to the three-dimensional model of the construction site map.

In particular, after a period of time, the 3D model of the construction site map may change, so this embodiment can periodically re-build the 3D model of the construction site map, so as to construct an accurate construction site with real-time collected human body position information A real-time 3D model of the map.

Example 3

In this embodiment, based on the technical solution of Implementation 1, the accident monitoring involved in step S4 is further described.

As a preferred solution of this embodiment, the accident monitoring includes fire monitoring, equipment failure monitoring and staff safety monitoring or accident monitoring.

Further, the fire monitoring can be realized by setting a plurality of smoke alarms outdoors and setting cameras indoors and performing fog recognition through the image acquisition results of the cameras; In the prevention area, the camera is installed in multiple key prevention areas indoors on the construction site. If a fire is detected and reported, it can simultaneously send out alarm signals such as sound and light;

The equipment failure monitoring is realized by setting up a running status monitoring module for each equipment. For example, electrical equipment can be equipped with a voltage and current detection module for basic detection, and ordinary mechanical equipment can be equipped with displacement sensors, speed sensors, etc. according to their functions. Monitoring work state;

Fall detection is performed by collecting the posture of the staff on the construction site to achieve safety monitoring or accident monitoring. For example, if the posture is lying down or sitting down, it is judged as a fall if it exceeds a time threshold. Fall detection can also be added, such as detection If the downward moving rate of the portrait exceeds the threshold in a short period of time, it is judged as falling.

Example 4

In this embodiment, based on the technical solution of Implementation 1, the abnormal situation monitoring involved in step S4 is further described.

First of all, the purpose is that the abnormal scene monitoring can include the displacement and dumping monitoring of key monitoring objects.

In this embodiment, the method for monitoring the displacement and dumping of the key monitoring object is preferably:

Select and mark a plurality of groups of key monitoring objects, extract a reference top view for each key monitoring object according to the real-time three-dimensional model and set a warning area as the monitoring frame of the key monitoring object;

Extract the monitoring box on the key monitoring object when no abnormality occurs as a reference box;

Periodically extract the top view for inspection through the real-time three-dimensional model, and use the monitoring box on the key monitoring object as the inspection box;

Both the reference box and the check box are circumscribed quadrilaterals of the circumcircle of the top view of the key monitoring object;

Combining the top view for inspection and the top view for reference, calculate the overlapping area of the inspection box and the reference box:

If the overlapping area is less than 85% of the total area of the reference frame, it is judged that the key monitoring object has moved and/or dumped, and an early warning of equipment displacement and dumping is performed.

In particular, since the check box and the reference box are placed on the same map, direct overlapping comparisons can be performed, and the posture of the check box relative to the corresponding key monitoring object is constant. A case is shown in Figure 2. The solid line in the figure shows the overlooking attitude of the key monitoring object X at time 1, and there is a reference frame p outside it. The dotted line in the figure shows the overlooking attitude of the key monitoring object X at time 2. , there is a reference box q outside it, and the area delineated by the bold line is the area r of the overlapping part:

r=p∪q

Therefore, the overlapping area S _r is S _p∪q , that is, it is necessary to judge the value of S _p∪q /S _p , and S _p is the area of the reference frame, where S _p∪q /S _p is less than 85%, so people There are potential problems, that is, the key monitoring object has been displaced or dumped to cause the problem, and the problem is reported for early warning, which can remind the staff to check and verify through the real-time 3D model or on-site.

As a further solution of this embodiment, the abnormal situation monitoring also includes safety distance monitoring;

Set a safety distance for each of the key monitoring objects;

Install a positioning device in the worker's helmet, and display the real-time position of the worker on the 3D model when indoors, and import worker information;

When a worker is close to the key monitoring object, that is, the distance from the real-time position of the worker to the check box is less than the safety distance of the corresponding key monitoring object, a safety distance warning will be performed, and the location of the worker and the extraction of worker information will be assisted. . Here is a description of the distance calculation:

When the real-time position of the staff is the distance from the check box, the essence is to regard the staff as a point, first find which side of the staff is closest to the corresponding check box, and then calculate the distance between the staff and this line. Edge distance, this distance is the distance from the staff's real-time position to the check box.

Here, Figure 3 is an example of calculating the distance from the real-time position of the staff to the check box. The circle in the figure represents the staff, and the length of L is the distance that needs to be obtained. Here L is 1m, and this key monitoring The safe distance of the object is 0.5m, and no safety warning is required.

Example 5

In this embodiment, based on the technical solution of Implementation 1, the construction site environment monitoring involved in step S4 is further described.

In this embodiment, the construction site environment monitoring is realized through a meteorological monitoring module.

The objects monitored by the meteorological monitoring module include future wind force, rainfall level, lightning situation, extremely high temperature weather and extremely low temperature weather.

Here, the meteorological monitoring module sends the data to the processing module, and then the processing module performs analysis and judgment and reports early warning. When the weather predicts that the future wind level exceeds the safety threshold, rainfall conditions such as precipitation exceeding the water threshold, thunder and lightning, temperature exceeding the high temperature threshold, and temperature falling below the low temperature threshold will occur, at least one of which will generate an alarm.

Especially for rainfall conditions, this embodiment will obtain the topography of each area in the construction site according to the real-time three-dimensional model of the construction site map;

Set rainfall level thresholds for each region according to the terrain conditions of each region;

When rainfall is detected in the future, an early warning will be issued if the rainfall level is greater than the rainfall level threshold in a certain area.

Example 6

This embodiment further improves the whole method based on the technical solution of Implementation 1.

In this embodiment, the real-time three-dimensional model is also used to realize the navigation of the smart car and the navigation of the smart UAV.

This is equivalent to using the established real-time 3D model as a map to locate and navigate the smart cars and smart drones on the construction site, and then provide different path navigation, automatic cruise and roadblock avoidance according to the actual movement mode of the equipment. The function will provide different path navigation, automatic cruise and roadblock avoidance functions according to the actual movement mode of the device. This embodiment can realize better and more precise positioning and navigation on the basis of three-dimensional modeling.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A method for safety monitoring of a building site based on three-dimensional modeling, characterized in that, comprising the following steps: Collect images of the entire area of the construction site; Collect the real-time location of the staff on the construction site; Construct a real-time 3D model of the construction site map through the pictures of the whole area in the construction site and the real-time positions of the staff; Real-time accident monitoring, abnormal scene monitoring and construction site environment monitoring are performed on safety monitoring targets through multiple sets of sensors and the real-time three-dimensional model; Remotely report the results of accident monitoring, abnormal situation monitoring and construction site environment monitoring. 2. the safety monitoring method of a kind of construction site based on three-dimensional modeling according to claim 1, is characterized in that, described real-time three-dimensional construction site map is constructed by the picture of the whole area in the construction site and the real-time position of the staff The method of the model is: Installation of multiple binocular cameras within a construction site; Start the binocular camera to collect the picture of the whole area in the construction site, and obtain the image data and corresponding three-dimensional coordinate information; Construct a three-dimensional model of the construction site map according to the image data and corresponding three-dimensional coordinate information; Real-time recognition of the human body and the global coordinates corresponding to its position through the binocular camera to obtain the position information of the human body; The real-time three-dimensional model of the construction site map is obtained by adding the human body position information to the three-dimensional model of the construction site map. 3. A method for safety monitoring of a construction site based on three-dimensional modeling according to claim 1, wherein the accident monitoring includes fire monitoring, equipment failure monitoring, staff safety monitoring or accident monitoring. 4. The safety monitoring method of a kind of construction site based on three-dimensional modeling according to claim 3, is characterized in that: by arranging a plurality of smoke alarms outdoors and setting cameras indoors and performing fog detection by the image acquisition results of the cameras The fire monitoring is realized through state identification; the equipment fault monitoring is realized by setting an operating state monitoring module for each device; the fall detection is performed by collecting the posture of the staff in the construction site to realize safety monitoring or accident monitoring. 5 . The three-dimensional modeling-based safety monitoring method for a construction site according to claim 1 , wherein the abnormal scene monitoring includes displacement and dumping monitoring of key monitoring objects. 6 . 6. A kind of safety monitoring method of construction site based on three-dimensional modeling according to claim 5, is characterized in that, the method for the displacement of described key monitoring object and dumping monitoring is: Select and mark a plurality of groups of key monitoring objects, extract a reference top view for each key monitoring object according to the real-time three-dimensional model and set a warning area as the monitoring frame of the key monitoring object; Extract the monitoring box on the key monitoring object when no abnormality occurs as a reference box; Periodically extract the top view for inspection through the real-time three-dimensional model, and use the monitoring box on the key monitoring object as the inspection box; Both the reference box and the check box are circumscribed quadrilaterals of the circumcircle of the top view of the key monitoring object; Combining the top view for inspection and the top view for reference, calculate the overlapping area of the inspection box and the reference box: If the overlapping area is less than 85% of the total area of the reference frame, it is judged that the key monitoring object has moved and/or dumped, and an early warning of equipment displacement and dumping is performed. 7. The safety monitoring method of a construction site based on three-dimensional modeling according to claim 6, wherein the abnormal situation monitoring also includes safety distance monitoring; Set a safety distance for each of the key monitoring objects; Install a positioning device in the worker's helmet, and display the real-time position of the worker on the 3D model when indoors, and import worker information; When a worker is close to the key monitoring object, that is, the distance from the real-time position of the worker to the check box is less than the safety distance of the corresponding key monitoring object, a safety distance warning will be performed, and the location of the worker and the extraction of worker information will be assisted. . 8. A method for safety monitoring of a construction site based on three-dimensional modeling according to claim 1, wherein the site environment monitoring is realized by a meteorological monitoring module. 9. a kind of safety monitoring method based on three-dimensional modeling construction site according to claim 8, is characterized in that, the object that described meteorological monitoring module monitors comprises future wind force, rainfall level, thunder and lightning situation, extremely high temperature weather and extreme cold weather; According to the real-time three-dimensional model of the construction site map, the topography of each area in the construction site is obtained; Set rainfall level thresholds for each region according to the terrain conditions of each region; When rainfall is detected in the future, an early warning will be issued if the rainfall level is greater than the rainfall level threshold in a certain area. 10. The safety monitoring method of a construction site based on three-dimensional modeling according to claim 1, wherein the navigation of smart cars and intelligent drones is also realized through the real-time three-dimensional model.