[comprehensive] construction safety | smart helmet application examples!

“The Hunan Provincial Housing and Housing Department organized the China Construction Fifth Engineering Bureau and other units to carry out on-site research, research projects, and technical breakthroughs, and formed application results with smart helmet system design as the main content, facing the new normal economy, technological revolution, Under the new circumstances of industrial reform, the overall level of safety management in the industry has been raised to ensure the safety of life of construction workers, and beneficial explorations and trials have been made. ”

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Field research and safety management

➢ Research content

Research Group's China Construction Fifth Division's Zhongjian Building Sub-Floor Project, Jinmao Bay Project, Metro Line 5 Project; Hunan Dongfanghong Construction Group's Hunan Forte Project; Hunan Jiansan Company's Huanghua Airport Air Cargo Terminal Project , carried out field research.

The investigation focused on six types of hazards, including safe electricity use, foundation pits and high slopes, high-altitude operations, mechanical equipment, temporary openings, scaffolding, and support molds.

For the effect to be achieved in safety management, put forward:

Cranes, safe electricity, and other hazards require 360 ​​omnidirectional alarms; linear alarms are required for pits and rim openings; accurate regional positioning is required; related records can be queried in the background; real-name access control functions for labor services are required; alarms need to be accurate to reduce false alarms. .

➢ Status of industry safety management

In summary, the safety management situation in the industry is not optimistic.

From the construction site, the risks at key parts of the site are very prominent. For example, high crashes at the edges and holes and object collisions occur from time to time. The safety production situation of Hunan's residential construction system in 2016 was analyzed. The death toll of such accidents accounted for 60. %the above.

From the perspective of the operating level, the liquidity is large, the quality is uneven, safety education is difficult to cover, risk awareness is not strong, and wage conflicts are prominent.

Judging from the regulatory level, most companies and regulatory agencies currently rely solely on traditional manual spot checks, data review, and report checks, as well as warning signs for dangerous parts of the tree. These traditional methods can no longer meet the existing safety management. need.

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Status of Project Site Safety Management Informationization

In recent years, the real name system for labor services has been widely used in various projects.

Due to the implementation of closed management at the construction site, the construction site gate serves as an important and unique gateway for personnel to enter and exit the management. In the past, access control was set at the gates, and workers used magnetic cards to identify personnel and achieve attendance and attendance. The system generated records based on daily attendance records. The monthly statistical statements, the solution to the problem of peasant workers' pay, and the use of labor real-name systems to achieve basic functions such as pre-job safety training for migrant workers.

However, due to the past wearing a magnetic card device, the speed of reading data is slow, the reaction is not sensitive, and the management is difficult, easy to lose, and the card swiping rate is not high during actual use. The implementation of the real name system for labor services has become a feature in many projects, and it has limited functionality and cannot be applied to site safety reminders.

With the continuous deepening of safety education, the wearing of hard hats is a necessary condition for entering the construction site. The safety helmet can not only give the safety function of protecting the head, but also can combine information technology, can realize intelligent functions, and realize that the labor workers enter the construction project. Personal security, safety education disclosure, attendance and payroll distribution, work conditions, personal information, and automatic warnings of access to dangerous locations have become truly possible.

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Smart helmet cloud platform design

➢ Platform positioning

The platform is positioned on a smart and secure cloud platform to meet the safety supervision and security application services of governments and enterprises for projects. Through advanced Internet of things and Internet+ technology, the project is linked to each item and the monitoring effect of people's linkages is dynamically controlled. Security off.

Based on the project security automatic warning and prompting function, supplemented by the basic functions of enterprise-level applications, it can meet the automatic alarm and prompts of dangerous sources on the construction site, and it can also meet the real-time inquiry and supervision of enterprises and supervisory departments.

➢ Software and hardware system

The hardware is mainly composed of four parts: a smart helmet, Jian An Bao, a project security alarm system, and a smart security remote monitoring system. The software mainly consists of a smart security remote monitoring system (commonly known as the cloud), a project security alarm system, and a mobile phone mobile terminal.

➢ Platform principle

When the smart helmet enters the “Jiananbao” area, Jian’anbao will perform sound and light alarms in real time and transfer the data to the project’s local computer database. The local computer will then upload the data to the cloud server through a breakpoint (see below).

➢ Key technologies

The first is advanced Internet of Things technology. The smart cap and Jian’anbao integrate advanced 2.4G Bluetooth technology, sensing technology, and RFID radio frequency technology, through which they can sense sound and light, object movement, delineation of areas, and wireless data transmission. Wait;

The second is embedded technology. The smart cap and Jian’an Bao have all adopted smart microchips and embedded intelligent security systems. Through intelligent identification and transmission algorithms, the identification of dangerous objects, the positioning of personnel movements, sound alarms, data caching, and Network continued transmission and other functions;

The third is big data technology. The platform will involve massive amounts of data. Each smart cap and Jian Anbao are data producers. They will send data to the cloud through their own or project terminals at all times. The cloud is responsible for these massive amounts of data. Using distributed storage technology, it is stored in various storage nodes. The cloud service uses advanced distributed computing frameworks such as Hadoop and Spark to analyze and process the data. It also provides real-time notification of each intelligence through the real-time voice publishing system. terminal. Simultaneously with the movement route of the personnel, the trajectory of each person's movement is calculated in real time, and displayed in front of each monitoring person through the pc terminal and the mobile app;

The fourth is advanced software architecture and component technology. In order to adapt to various security model terminals in the future and connect terminal accesses from different vendors, the platform adopts an advanced open protocol mode. Any terminal that conforms to the protocol can seamlessly access and provide open access. Api, allowing docking with other platforms.

➢ Realize the function

The first is to rely on "access control" to achieve labor management. The project records personnel identity information into labor systems and associates them with smart helmet chips. When workers enter or leave the exhibition hall, the system automatically scans the worn helmets, and they can enter and exit the construction site after identifying their identities. At the same time, the number of workers at the site can be grasped in real time.

The second is relying on "Jiananbao" to achieve safe voice warnings. Install “Jiananbao” in the critical area of ​​the hazard area. When the operator is close to the risk area, “Jiananbao” automatically senses the signal source emitted by the hard hat chip and gives an acousto-optic warning to prompt the risk.

The third is relying on "safety helmets" to achieve the trajectory management of on-site employees. By logging in to the local or cloud system, you can query the movement trajectory of the operator for a certain period of time, and also count the number of workers for a certain type of work in a certain area, which facilitates the management of the operator.

The fourth is relying on "smart platform" to achieve full coverage of safety education. The project will set up entrances and exits in safety education venues, set up sensor receivers, automatically record the information of the educated personnel through induction, and record the contents of education in a timely manner, so as to achieve the goal of full coverage of education.

Fifth, relying on the “Internet” to achieve remote supervision of the management. A smart helmet system cloud platform was set up. Projects uploaded project management data in a timely manner. Through the hierarchical authorization of the cloud platform (regulatory departments, enterprises, and project departments), the required information could be queried at all levels.

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China Construction Fifth Bureau Case Pilot Application

➢ Project Overview

The Meixi Lake·Jin Mao Bay project of the construction of the China Construction 5th Bureau and the 3rd company has been identified as the first pilot application project of the “Smart Helmet Platform”.

The project is located in Meixihu District, Xiangjiang New District, Changsha. From four 46-storey residential buildings, the maximum height of the main building is 139.9m and the total construction area is 148,000 square meters.

The project is a typical super-high-rise group building. It has large construction work surfaces, many operating personnel, and many dangerous sources such as rims and falling objects. Safety management is difficult, and safety innovation management is imperative.

➢ Application summary

In this project, “Jiananbao” was installed at the top of the lift for people and goods, the construction work layer of the masonry, the bottom of the climbing frame, the construction work layer and the surrounding building radius of the building to be piloted respectively. After two months of application, good results were obtained.

Feedback from construction company managers: facilitate management of personnel on and off the site; facilitate management of real-name systems; no smart helmets are prohibited from entering the construction site; linkage with safety education and full coverage of education; advance understanding of the work team’s class-level workers through the cloud platform Comprehensive evaluation can avoid accidents caused by team and individual problems before entering the market; real-time display of payroll distribution situation, avoid malicious paychecks, enterprises and regulatory agencies to implement the master project situation.

Feedback from on-site service workers: After security education, they can enter the door, let themselves know the safety management regulations of the site and the safety management regulations of the project, and avoid the occurrence of accidents; they can remind themselves to pay attention to safety and improve their own Security awareness.

➢ Problems

First, it is difficult to ensure the construction of the Internet on the construction site. The phenomenon of disconnected networks sometimes leads to the remote real-time monitoring.

Second, the application management model still needs to be optimized. What remote monitoring data needs to be mastered and how to use this data management?

Third, the system performance needs further optimization, and the interface needs to be designed;

Fourth, Jian'anbao integrated network communication needs further optimization.

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The next step is to deepen the application and function expansion

➢ Deepen application

The first is to expand the pilot area and improve system functions. The second is to increase the on-site personnel application coverage and achieve real-time management. The third is to improve APP development and improve ease of use.

➢ Function expansion

The first is to increase the "system management" function and achieve multi-party cooperation. The second is to increase the "data warehouse" function, to realize the management of construction sites, personnel, and related parties, and to use big data to improve service functions. The third is to increase the "integrated application" function, to achieve integration with other systems, and create an intelligent site.