Building construction site safety monitoring system and method based on unmanned aerial vehicle and thermal imager

Abstract

The invention provides a building construction site safety monitoring system and method based on an unmanned aerial vehicle and thermal imaging. Comprising a sensing assembly used for acquiring sensing data of a building construction site; a control terminal; the server is used for sending a control instruction to the unmanned aerial vehicle and receiving sensing data transmitted by the unmanned aerial vehicle; an information processing terminal; the early warning module is used for generating early warning information according to the sensing data transmitted by the control terminal; a wireless communication unit; and the data transmission module is used for performing data transmission between the unmanned aerial vehicle and the control terminal and between the information processing terminal and the control terminal. According to the system, comprehensive, real-time and accurate detection of the temperature of the building construction site is realized, and the construction safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of construction site safety monitoring, and in particular to a construction site safety monitoring system and method based on an unmanned aerial vehicle and a thermal imager. Background Art

[0002] At the construction site, there are a large number of construction workers and construction equipment (including but not limited to large mechanical equipment such as excavators and cranes, as well as electrical equipment such as distribution boxes and power tools), and their safe operation is of vital importance. Once the construction equipment fails or the construction workers operate improperly, it will not only affect the construction progress, but also may lead to a decline in construction quality and even cause safety accidents, such as mechanical equipment causing injuries such as pinching and collision to personnel, and electrical equipment causing accidents such as electric shock and fire. Therefore, strengthening safety management and ensuring construction safety is the core content of construction management.

[0003] Temperature is an important reference indicator for measuring the safety and health status of construction equipment and construction personnel. For mechanical equipment, the mechanical strength of its metal materials will be significantly reduced at high temperatures, its polymer materials will accelerate oxidation and cracking at high temperatures, and its bearings overheating may cause lubrication failure and increased wear, all of which will affect the stability and safety of mechanical equipment. For electrical equipment, on the one hand, excessively high temperatures will accelerate the aging of its insulating materials and increase the risk of short-circuit failures; on the other hand, excessively high temperatures will also cause severe oxidation of the surface of the conductor at the electrical contact point, and the contact resistance will increase significantly, which will not only cause the temperature of the conductor and its accessories to rise, but may also cause the contacts to weld and cause electrical failures. For construction personnel, excessively high body temperatures can easily affect their physical and mental health, leading to problems such as inattention and slow reaction, which will also increase the risk of safe construction. However, the traditional method of safety monitoring at construction sites mainly relies on manual inspections, which has the following shortcomings: first, the inspection cycle is long, and it is difficult to grasp the operating status of the equipment in real time; second, manual inspections are easily affected by subjective factors and have low accuracy; third, some equipment has blind spots, making it difficult to fully monitor. Summary of the invention

[0004] The purpose of the present invention is to provide a construction site safety monitoring system and method based on an unmanned aerial vehicle and a thermal imager, so as to achieve real-time, accurate and comprehensive monitoring of the construction site and ensure construction safety.

[0005] In order to solve the above technical problems, the present invention provides a construction site safety monitoring system based on drones and thermal imaging, comprising: An unmanned aerial vehicle; comprising a sensor component for acquiring sensor data of a construction site; wherein the sensor component comprises a thermal imaging module, and the sensor data comprises a thermal map of the construction site; Control terminal: used to send control instructions to the drone and receive sensor data transmitted by the drone; Information processing terminal; used to generate early warning information according to the sensor data transmitted by the control terminal; Wireless communication unit; used for data transmission between the UAV and the control terminal, and between the information processing terminal and the control terminal.

[0006] According to the above scheme, the sensing component includes a positioning module, a camera module, and a humidity sensing module; the positioning module is used to perform real-time positioning of the drone, the camera module is used to obtain video images of the construction site, and the humidity sensing module is used to obtain air humidity data at the construction site.

[0007] According to the above scheme, the positioning module adopts one or more technologies selected from satellite navigation technology, inertial navigation technology and visual positioning technology.

[0008] According to the above scheme, the early warning information includes abnormal temperature data, construction equipment / personnel information, and abnormal location information; The abnormal temperature data generation process includes: judging whether the temperature of construction equipment / personnel exceeds the set temperature value according to the thermal map, and if so, marking the temperature of the construction equipment / personnel as abnormal temperature data; The construction equipment / personnel information is obtained from the database, including the construction equipment number and the identity of the construction personnel.

[0009] According to the above scheme, the system includes: a construction management database; a database for storing information including construction site information and drone information; Construction site information includes three-dimensional site information, construction plan information, construction equipment / personnel information, drone information, and weather forecast information; The three-dimensional information of the construction site includes the geometric information and physical properties of the construction site buildings; The construction plan information includes the address of the construction site and the construction schedule for the day; Construction equipment / personnel information includes construction equipment number, construction personnel identity, construction equipment / personnel image, and historical health status; Drone information includes drone battery level and drone historical inspection status; Weather forecast information includes estimated weather conditions for the construction site.

[0010] The present invention also provides a construction site safety monitoring method based on drone and thermal imaging, comprising the following steps: Based on the construction site information and drone information, plan the drone's inspection route and inspection time and control the drone to conduct inspections; The sensor data obtained by the drone inspection is used to determine whether there is any abnormality in the construction, and if so, an early warning message is generated.

[0011] According to the above scheme, the sensor data includes drone positioning information, video images of the construction site, and air humidity data.

[0012] According to the above scheme, the method includes: when the air humidity data obtained by the drone exceeds a preset humidity value, controlling the drone to stop patrolling.

[0013] According to the above scheme, the drone positioning information is obtained by using one or more technologies including satellite navigation technology, inertial navigation technology, and visual positioning technology.

[0014] According to the above scheme, the early warning information includes abnormal temperature data; the abnormal temperature data generation process includes: judging whether the temperature of any construction equipment / personnel exceeds the set temperature value according to the thermal map, and if so, marking the temperature of the construction equipment / personnel as abnormal temperature data.

[0015] The beneficial effect of the present invention is that the temperature condition of the construction site is monitored by using a drone. Due to the large range and flexibility of the drone, compared with manual monitoring, when dealing with construction scenes with large machinery and high-rise buildings, drone monitoring avoids the risk of personnel climbing operations. And because the drone uses thermal imaging for detection, it avoids the potential threats and equipment interference that may be caused by contact detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a construction site safety monitoring system based on drones and thermal imaging according to the second embodiment of the present invention; Figure 2 This is a flow chart of a construction site safety monitoring method based on drones and thermal imaging according to a fourth embodiment of the present invention. DETAILED DESCRIPTION

[0017] Embodiment 1: This embodiment provides a construction site safety monitoring system based on drones and thermal imaging, including: An unmanned aerial vehicle; comprising a sensor component for acquiring sensor data of a construction site; wherein the sensor component comprises a thermal imaging module, and the sensor data comprises a thermal map of the construction site; Control terminal: used to send control instructions to the drone and receive sensor data transmitted by the drone; Information processing terminal; used to generate early warning information according to the sensor data transmitted by the control terminal; Wireless communication unit; used for data transmission between the UAV and the control terminal, and between the information processing terminal and the control terminal.

[0018] Furthermore, the sensing component includes a positioning module, a camera module, and a humidity sensing module; the positioning module is used to perform real-time positioning of the drone, the camera module is used to obtain video images of the construction site, and the humidity sensing module is used to obtain air humidity data at the construction site.

[0019] Furthermore, the positioning module adopts one or more technologies selected from the group consisting of satellite navigation technology, inertial navigation technology, and visual positioning technology.

[0020] Furthermore, the warning information includes abnormal temperature data, construction equipment / personnel information, and abnormal location information; The abnormal temperature data generation process includes: judging whether the temperature of construction equipment / personnel exceeds the set temperature value according to the thermal map, and if so, marking the temperature of the construction equipment / personnel as abnormal temperature data; The construction equipment / personnel information is obtained from the database, including the construction equipment number and the identity of the construction personnel.

[0021] Further, the system includes: a construction management database; a database for storing information including construction site information and drone information; Construction site information includes three-dimensional site information, construction plan information, construction equipment / personnel information, drone information, and weather forecast information; The three-dimensional information of the construction site includes the geometric information and physical properties of the construction site buildings; The construction plan information includes the address of the construction site and the construction schedule for the day; Construction equipment / personnel information includes construction equipment number, construction personnel identity, construction equipment / personnel image, and historical health status; Drone information includes drone battery level and drone historical inspection status; Weather forecast information includes estimated weather conditions for the construction site.

[0022] Embodiment 2: See also Figure 1 , based on the first embodiment, this embodiment provides a construction site safety monitoring system based on a drone and a thermal imager, including a drone, a wireless communication unit, a control terminal, an information processing terminal, a display terminal and a construction management database; The drone includes a positioning module, a camera module, a thermal imaging module, and a humidity sensor module; The positioning module uses one or more of satellite navigation technology, inertial navigation technology, and visual positioning technology to achieve real-time positioning, navigation, and autonomous obstacle avoidance functions of the UAV; The camera module uses a high-definition camera to obtain video images of construction equipment and construction personnel; The thermal imaging module uses an infrared thermal imager to obtain thermal images of construction equipment and construction personnel; The humidity sensor is used to obtain weather and humidity data at the construction site; The wireless communication unit is used to realize information interaction between the UAV and the control terminal, and between the control terminal and the information processing terminal; The control terminal plans and controls the inspection path and inspection time of the UAV according to the information of the construction management database, and obtains the inspection information; The inspection information includes inspection images and weather and humidity data; The inspection images include video images and thermal images of construction equipment and construction personnel; The information processing terminal is used to identify and process the inspection image. When the temperature data in the thermal map of the construction equipment or the construction personnel exceeds the preset temperature value, it is determined that the construction equipment or the construction personnel are abnormal, and the number information of the construction equipment or the identity information of the construction personnel are obtained from the construction management database, and the abnormal temperature data and location information of the construction equipment or the construction personnel are recorded in the construction management database, and then an early warning message is generated and sent to the management personnel for further verification and processing; The display terminal obtains and displays the inspection status, inspection images and construction management database information of the drone from the information processing terminal; The construction management database includes a construction site three-dimensional information model module, a construction plan information module, a construction equipment and construction personnel information module, a drone information module, and a weather forecast information module; The three-dimensional information model module of the construction site is constructed based on BIM technology and contains geometric information and physical property information of the construction site buildings; The construction plan information module includes the construction site address information and construction schedule information of the planned construction on that day; The construction equipment and construction personnel information module includes the construction equipment serial number information, construction personnel identity information, and images and historical health status information of the construction equipment and construction personnel; The drone information module includes drone power information and drone historical inspection status information; The weather forecast information module is used to predict the weather conditions at the construction site.

[0023] Embodiment three: Based on the first embodiment, this embodiment provides a construction site safety monitoring method based on drone and thermal imaging, including the following steps: Based on the construction site information and drone information, plan the drone's inspection route and inspection time and control the drone to conduct inspections; The sensor data obtained by the drone inspection is used to determine whether there is any abnormality in the construction, and if so, an early warning message is generated.

[0024] Furthermore, the sensor data includes drone positioning information, video images of the construction site, and air humidity data.

[0025] Furthermore, the method includes: when the air humidity data acquired by the drone exceeds a preset humidity value, controlling the drone to stop patrolling.

[0026] Furthermore, the drone positioning information is obtained using one or more of satellite navigation technology, inertial navigation technology, and visual positioning technology.

[0027] Furthermore, the early warning information includes abnormal temperature data; the abnormal temperature data generation process includes: judging whether the temperature of any construction equipment / personnel exceeds the set temperature value according to the thermal map, and if so, marking the temperature of the construction equipment / personnel as abnormal temperature data.

[0028] Embodiment 4: See also Figure 2 Based on the third embodiment, this embodiment provides a construction site safety monitoring method based on a drone and a thermal imager, comprising the following steps: S1. The control terminal reads the construction site three-dimensional information model, construction plan information, weather forecast information and drone information from the construction management database. If there is no rain in the weather forecast during the planned construction time and the drone has sufficient battery power, the drone's inspection route is planned according to the construction site three-dimensional information model and the construction site address information planned for the day, and the drone's inspection time is planned according to the construction schedule information.

[0029] S2. The control terminal communicates with the UAV through the wireless communication unit, controls the UAV to inspect the construction site according to the planned inspection route and inspection time. During the inspection process, the UAV obtains inspection information, which includes weather and humidity data of the construction site, video images and thermal maps of construction equipment and construction personnel.

[0030] S3. To prevent humid weather from affecting the imaging effect of the thermal imager, the control terminal compares the weather humidity data obtained by the drone with the preset humidity value. When the weather humidity data is greater than the preset humidity value, the control terminal controls the drone through the wireless communication unit to terminate the inspection and return to the starting point; otherwise, the inspection continues.

[0031] S4. The information processing terminal receives the video images and thermal maps of the construction equipment and construction personnel during the inspection process through the wireless communication unit, and compares the temperature data in the thermal map with the preset temperature value. When the temperature data of the construction equipment or the construction personnel exceeds the preset temperature value, it is determined that the construction equipment or the construction personnel is abnormal, and the video images of the abnormal construction equipment or the construction personnel are compared with the information in the construction management database to determine the number information of the abnormal construction equipment or the identity information of the abnormal construction personnel, and the abnormal temperature data and location information of the construction equipment or the construction personnel are recorded in the construction management database, and then an early warning message is generated and sent to the management personnel for further verification and processing.

[0032] S5. The display terminal obtains and displays the inspection status, inspection images and construction management database information of the drone in real time from the information processing terminal.

[0033] S6. The drone continues to fly along the planned inspection route until the inspection is completed and returns to the starting point.

[0034] The technical effects and advantages of the present invention include: the present invention provides a construction site safety monitoring system and method based on drones and thermal imagers, which monitors the temperature of construction equipment and construction personnel, timely discovers potential faults such as equipment overheating, abnormal heating, and personnel fever, heat stroke and other health problems, reduces the risk of fire, equipment damage, and casualties, and ensures the safety of the construction site. It has the following technical advantages and effects: 1) Automatically plan and control the drone inspection process based on the construction management database information, and conduct real-time inspection data transmission and visual analysis, which can quickly realize the monitoring of large-scale construction sites and improve safety management efficiency.

[0035] 2) Drones can reach high altitude areas that are difficult to reach manually, conduct safety monitoring of large machinery and high-rise buildings, and reduce the risk of climbing operations by personnel; thermal imagers can obtain temperature data without contacting the monitored objects, avoiding potential dangers and equipment interference caused by contact.

[0036] 3) Both drones and thermal imagers can work normally in low visibility environments such as smoke, dust, and darkness. The monitoring system and method have strong adaptability. Combining video images and thermal imaging, the visual and thermal information of the target can be obtained at the same time, which improves the comprehensiveness of data analysis.

Claims

1. A construction site safety monitoring system based on drones and thermal imaging, characterized in that: include: Drones; Includes a sensor component for acquiring sensor data at a construction site; The sensing components include thermal imaging modules, and the sensing data include thermal images of the construction site; Control terminal; Used to send control commands to the drone and receive sensor data transmitted by the drone; Information processing terminal; Used to generate early warning information based on sensor data transmitted by the control terminal; wireless communication unit; Used for data transmission between the drone and the control terminal, and between the information processing terminal and the control terminal.

2. The construction site safety monitoring system based on drone and thermal imaging according to claim 1 is characterized in that: The sensing component includes a positioning module, a camera module, and a humidity sensing module; the positioning module is used to locate the drone in real time, the camera module is used to obtain video images of the construction site, and the humidity sensing module is used to obtain air humidity data at the construction site.

3. The construction site safety monitoring system based on drone and thermal imaging according to claim 2 is characterized in that: The positioning module adopts one or more technologies selected from satellite navigation technology, inertial navigation technology and visual positioning technology.

4. The construction site safety monitoring system based on drone and thermal imaging according to claim 2 is characterized in that: Early warning information includes abnormal temperature data, construction equipment / personnel information, and abnormal location information; The abnormal temperature data generation process includes: judging whether the temperature of construction equipment / personnel exceeds the set temperature value according to the thermal map, and if so, marking the temperature of the construction equipment / personnel as abnormal temperature data; The construction equipment / personnel information is obtained from the database, including the construction equipment number and the identity of the construction personnel.

5. The construction site safety monitoring system based on drone and thermal imaging according to claim 1 is characterized in that: The system includes: a construction management database; a database for storing information including construction site information and drone information; Construction site information includes three-dimensional site information, construction plan information, construction equipment / personnel information, drone information, and weather forecast information; The three-dimensional information of the construction site includes the geometric information and physical properties of the construction site buildings; The construction plan information includes the address of the construction site and the construction schedule for the day; Construction equipment / personnel information includes construction equipment number, construction personnel identity, construction equipment / personnel image, and historical health status; Drone information includes drone battery level and drone historical inspection status; Weather forecast information includes estimated weather conditions for the construction site.

6. A construction site safety monitoring method based on drones and thermal imaging, characterized in that: The following steps are involved: Based on the construction site information and drone information, plan the drone's inspection route and inspection time and control the drone to conduct inspections; The sensor data obtained by the drone inspection is used to determine whether there is any abnormality in the construction, and if so, an early warning message is generated.

7. The construction site safety monitoring method based on drone and thermal imaging according to claim 6 is characterized in that: The sensor data includes drone positioning information, video images of the construction site, and air humidity data.

8. The construction site safety monitoring method based on drone and thermal imaging according to claim 7 is characterized in that: The method comprises: when the air humidity data acquired by the drone exceeds a preset humidity value, controlling the drone to stop patrolling.

9. The construction site safety monitoring method based on drone and thermal imaging according to claim 7 is characterized in that: The drone positioning information is obtained using one or more of satellite navigation technology, inertial navigation technology, and visual positioning technology.

10. The construction site safety monitoring method based on drone and thermal imaging according to claim 7 is characterized in that: The early warning information includes abnormal temperature data; the abnormal temperature data generation process includes: judging whether the temperature of any construction equipment / personnel exceeds the set temperature value according to the thermal map, and if so, marking the temperature of the construction equipment / personnel as abnormal temperature data.

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