Real-time dynamic tracking management system for offshore oil wells seafarers based on the Internet of Things

chrispeng December 27, 2021 Mining Safety

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　1. System introduction

1.1 Project background

Marine operations are complicated in most cases. If blowouts are out of control, fires and explosions, platform distress, plane or helicopter crashes, ship damages, oil (gas) production facilities and pipeline damage/leakage, leakage of toxic and hazardous materials, radioactivity Dispersal of materials; serious injuries, deaths, missing persons, and outbreaks of infectious diseases and poisoning; special circumstances such as oil spills, natural disasters, and other emergencies, which not only cause huge property losses, but also seriously threaten the safety of marine operators. Personal safety.

When an accident occurs, how to know the location information of the operator in the first time so as to make a timely judgment and take corresponding measures becomes particularly important.

1.2 Purpose of implementation

From the perspective of customers, China Chuangyi Technology, with its own advanced technology and excellent development team, has developed a maritime operator positioning management system based on the current social reality. The management system realizes the regional positioning of the working environment of marine personnel, and can know the regional location of the personnel at any time.

China·Chuangyi’s dynamic tracking management system for sea personnel adopts the most advanced ZIGBEE technology. Aiming at the management and monitoring needs of sea personnel, a set of software and hardware application systems are specially designed and developed. It is a safe and reliable intelligent management system. , In a real sense, realize the information management of offshore operators, and provide reliable guarantee for the personal safety of offshore operators.

The sea personnel dynamic tracking management system is designed to meet the needs of customers for the dynamic tracking and management of personnel on drilling platforms, oil production platforms, and onshore terminals and other facilities, equipment, and sites in the sea area under their jurisdiction. The system provides a networked management platform and information technology for safety managers and production managers, realizes dynamic management of workers and online approval of work processes, and improves the efficiency of work safety management and production management.

　2. System function

2.1 Operator management

An active tag (card type) is provided for each offshore operator, and each active tag has its own unique ID number, which serves as the unique identification of the worker.

The information in the tag can be set with basic information such as name, age, gender, department, photo, etc. Because the electronic tag is active, the working mode is active, and ID number information can be continuously transmitted to the outside.

Install several card readers (the number and location of the installation depends on the site conditions) on the main roads, working areas, and living areas of the work platform, so that there is no blind area where the label information cannot be read in the area that needs to be monitored.

When an operator wearing a tag enters the recognition range of a card reader, the reader receives the tag information, and transmits the signal to the system terminal through wireless transmission or other intermediate devices, and can be compared with the ID number database See the detailed information of the person.

The fixed card reader in each monitoring area can be monitored at a fixed time interval through software settings, for example, set to automatically refresh once every 30 seconds, that is, realize automatic execution once.

2.2 Contractor’s personnel management

When a contractor applies for a mission to sea, he needs to log on to the operating platform after passing the review to perform offshore operations. However, the contractor includes not only technical engineers, but also construction workers. There are too many and chaotic personnel, and it is difficult to achieve certain results only by personnel management. .

After the contractor passes the review, it is necessary to submit the detailed information and photos of all the personnel going to sea to the management personnel, and the management personnel shall enter and count the relevant materials. Distribute a temporary active label card to each contractor as a temporary identification mark for this operation. The label stores basic information such as the person’s name, age, gender, department, and photo.

When the contractor completes the entire project and evacuates the work platform, the system can cancel the personnel information of all contractors through the system, and the card can be recovered and recycled.

2.3 Real-time monitoring of personnel

Within the coverage area of the card reader, when the electronic tag signal is read, it will be transmitted to the monitoring host computer through the communication interface or wireless transmission method (GPRS/CDMA/WIFI/Bluetooth);

According to the signal transmission situation, the electronic map displays the regional location of all the personnel in the community in real time, and the monitoring personnel can dynamically grasp the number of personnel and the real-time distribution of personnel. Move the mouse to the personnel icon to view the detailed information of the personnel.

2.4 Personnel search and location

Enter the person’s name or number to quickly locate the area where the person you want to find is located.

2.5 Remote monitoring and inspection

After the card reader reads the information, it can transmit the information to the data center through WIFI, GPRS, etc., and the system can be operated through the Internet, which can realize remote management and monitoring of the platform site in the monitoring center.

3. Principle of operation

According to the size of the operating table, arrange several locators to cover the entire operating table. When there is an unauthorized person on the console or the staff leaves the console without authorization, that is, when the tag signal of the staff is read abnormally or the signal cannot be read, the system will alarm in time.

Configure an active tag (wristband type or card type) for each operator, install several card readers at the main positions of the stairs, the main roads of the passage, the working area and the living area (the installation location depends on the site conditions) ), it can receive the information data sent by the active tags worn by the personnel in the entire work area in real time, and realize the real-time positioning of the personnel.

Divide the positioning area inside the console, and each locator can set a small coverage radius as needed to cover the entire console. The locator performs polling and card reading according to the time set in the background, and locates the activity block of each worker in the workshop. According to the positioning interval, the real-time trajectory of each worker is depicted.

4. System Features

4.1 Technical characteristics

The system uses ZigBee technology. ZigBee is a wireless connection that can work at 2.14GHz (globally popular) wireless communication technology. It has the following characteristics:

Low power consumption: Due to the low transmission rate of ZigBee, the transmission power is only 1mW, and the sleep mode is adopted, and the power consumption is low, so ZigBee devices are very power-saving. Short delay: The communication delay and the delay of activation from the sleep state are very short. The typical search device delay is 30ms, the sleep activation delay is 15ms, and the active device channel access delay is 15ms. Therefore, ZigBee technology is suitable for wireless control (such as industrial control occasions, etc.) applications with demanding delay requirements.

Large network capacity: A star-shaped Zigbee network can accommodate up to 254 slave devices and one master device. There can be up to 100 ZigBee networks in an area at the same time, and the network composition is flexible.

Reliability: A collision avoidance strategy is adopted, and a dedicated time slot is reserved for communication services that require a fixed bandwidth to avoid competition and conflicts in sending data. The MAC layer adopts a fully confirmed data transmission mode, and each data packet sent must wait for the receiver’s confirmation information. If there is a problem in the transmission process, it can be retransmitted.

Security: ZigBee provides a cyclic redundancy check (CRC)-based data packet integrity check function, supports authentication and authentication, and uses the AES-128 encryption algorithm. Each application can flexibly determine its security attributes.

Anti-interference: Most of the real-time working area is metal structure, which can also transmit signals well.

　4.2 Product features

Three-proof function: The card reader used in the system is a waterproof, moisture-proof, drop-proof, and dust-proof card reader, which can be used normally in marine working environments.

The label information is rewritable, and the material is durable: the label information is rewritable and has a service life of up to 10 years. Both the card-type label and the wristband-type label are made of waterproof, dust-proof, and anti-corrosion materials, which are durable.

The built-in acceleration sensor of the tag: The built-in acceleration sensor can distinguish the direction of movement according to the change of the airflow when the worker is walking or running, and can test the movement speed of the tag. According to this principle, the movement distance of the tag can be calculated, thus achieving According to the precise positioning function of the personnel.

Recognition distance can be adjusted: Zigbee’s card reader recognition distance can be adjusted, and the optimal recognition distance can be set according to customer needs, and each reader can read 200 tags at the same time.

Anti-interference: The system adopts ZigBee technology, which can still work normally in harsh environments such as the field and sea, and is not affected by obstacles such as metal and rear walls.

Low power consumption and rechargeable: Both the card tag and the wristband tag use rechargeable batteries. Due to ZigBee’s low power consumption technology, the battery in the tag can be used for a long time and can be recycled.

Low temperature state, the battery works normally: The battery in the label can be guaranteed to work normally under the environment of -30°C~-40°C. Even if the sea temperature is very low, it will not be affected. At present, this label has been applied to the cold chain logistics system, and the effect has been recognized.

5. Software function

5.1 Login interface

Users enter the system by entering their user name and account number. Different users have different access rights to the system.

5.2 User Information Management

This module realizes the management of all system background information: user account management, user role management, user authority management, personnel certificate type management, personnel post name management, unit name management, etc.

　5.3 Device management

1. Card reader management
2. Active card management
3Handheld device management
This module mainly completes the review of the validity of personnel related documents, the collection and entry of basic personnel information, the scanning and storage of various documents of personnel, the setting of one-to-one correspondence between personnel and cards, etc., including modification, query, printing, Report loss, reissue, etc.

5.4 Positioning management

This module mainly realizes the personnel safety management of sea personnel on the offshore operation platform, and realizes the real-time dynamic tracking and positioning of personnel through the reading relationship between the equipment: personnel all-day itinerary monitoring, regional personnel monitoring, action area monitoring, and action time monitoring , Monitoring in key areas, counting the number of people on a regular basis. Including query, modification, printing, etc.

　5.5 Data query and statistics management

This module mainly realizes the monitoring of the current status of the personnel, and dynamically tracks the operation of the personnel; it completes the functions of query, statistics and various report printing of the historical records of the personnel going to sea.

1. The query module mainly includes:
1) Personnel status query: query the current status of personnel;
2) Query of personnel going to sea: query the history of personnel going to sea;
3) Inquiry about certificate expiration: Inquiry about the validity period of the certificate held by the personnel;
4) Terminal online status query: check the current online status of each terminal program;
5) Project weekly report query: View project weekly report and system operation and maintenance weekly report.

2. The statistical module mainly includes:
1) Statistics of current personnel in operating facilities: Statistics and query of current personnel information in various operating facilities;
2) Statistics of historical personnel of operating facilities: Statistic and query historical personnel information of various operating facilities;
3) Contractor’s working hours statistics: statistics on the working hours of contractors’ personnel;

　　5.6 Intelligent alarm management for violations

This module mainly completes the alarm function of the irregular operation of each terminal user during the operation of the system, the expired personnel certificate, and the personnel going to sea overdue information, and provides visual and sound prompts on the corresponding user terminal. The alarm information mainly includes:

1) Alarm for personnel going to sea beyond the specified time limit: For the operators who go to sea beyond the specified time limit, they will be displayed in red in the current personnel statistics module of the operating facility terminal program and the WEB terminal program;

2) Early warning of card expiration: within the specified time period before the expiration of the personnel card, notify the person in charge of the unit’s system by email;

3) Statistics and alarms for personnel who directly log in to the operating facility without applying for a task: For areas where the approval process for overseas tasks is implemented, the personnel who directly access the operating facility without applying for a task are counted, and the person in charge of the unit system is notified by email;

4) Statistics and alarms of the personnel who log in to the operation facility without the approval of the relevant department: For areas where the approval process of the overseas task is implemented, the personnel who log in to the operation facility without the approval of the relevant department will be counted and notified by email Person in charge of the unit system where the person belongs;

5) Statistics and alarms of persons who did not conduct security check at designated docks/airports when going to sea: Count the persons who did not conduct security checks at designated docks/airports when going to sea, and notify the person in charge of the unit’s system by mail;

6) Statistic and alarm for the personnel who did not normally swipe the card at the operating facility: Statistic and alarm for the personnel who did not normally swipe the card at the corresponding operating facility when going out to sea, and notify the person in charge of the unit’s system by email.

6. Product introduction

6.1 CY-TZB-200/201 electronic label