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Chapter 1 Overview
At present, the application of informatization systems has gradually become popular in various large domestic companies. However, the existing information management system is often only the electronic management of various administrative, technical documents and work business flow processes, and cannot obtain the actual on-site information in real time, and cannot distribute the personnel in and out of the work area and the personnel in each area. Have a comprehensive, timely and accurate grasp. Managers need to spend a lot of energy and time to patrol various areas. The inability to timely and accurately grasp the on-site situation indirectly led to the gradual expansion of many potential safety hazards and even accidents.
Therefore, with the current mature radio frequency identification technology, network transmission technology, and other surrounding information technology, the entire work area and key areas of the personnel distribution and safety management are incorporated into the information management system, which is a modern company information and safety management The inevitable choice.
The cleaning staff attendance positioning system is a collection of staff attendance, regional positioning, daily management and other functions. It is also a domestic cleaning construction site monitoring system with leading technology, stable operation and professional design. It enables managers to grasp the distribution status of each person and the movement trajectory of each person at any time, facilitating more reasonable scheduling management and safety monitoring management. The realization of this scientific and technological achievement has promoted the production and daily management of cleaning staff to a new level.
The personnel attendance positioning system can not only realize attendance or positioning, but also realize two functions of attendance and positioning at the same time.
Chapter 2 System Design
2.1 System composition
The cleaning personnel safety management system is composed of five major parts, namely: personnel information system, attendance positioning system, LED display system (optional), monitoring linkage system, and data management system. Therefore, the overall plan design must have reliability, safety, advancement, flexible expansion, economical practicability, convenience of operation and maintenance, and more forward-looking construction of a unified management platform for the overall situation.
2.1.1 The hardware design and selection of the system should follow the following principles:
1. Advancement: The system hardware should be advanced to avoid low performance or premature elimination of the entire system due to obsolete technology in the short term.
2. Reliability: While fully considering the advancement, the hardware system should be based on the specific needs of users for the entire system, and should give priority to advanced, applicable and mature technologies to maximize investment benefits.
3. Openness: The choice of computer network and related products should be based on advancement and applicability, and compatibility should be considered at the same time.
4. Scalability: The system data acquisition equipment adopts modular structure and bus communication mode. When the system scale is expanded, there is no need for major transformations, just add corresponding modules.
2.1.2 The software design and selection of the system should follow the following principles:
1. Reliability and safety: The system software should have high reliability and safety.
2. Ease of use: The system software should be easy to operate and adopt a Chinese graphical interface.
3. Standardization: The system software should comply with national, industry standards and international standards to facilitate multiple upgrades and support for new hardware products.
4. Scalability: The system software should be expandable. Adopting object-oriented structure design, it has certain flexibility, operability and expansibility. When the business changes in the future, the addition of modules and the modification of modules should not affect other modules.
In order to ensure the quality of the entire project, the overall plan design principles need to achieve the above-mentioned reliability, safety, advancement, flexible expansion, economy and practicality, and the convenience of operation and maintenance are highly unified.
2.2 Working principle
2.2.1 2.4G active radio frequency tag:
The active radio frequency card is a round label or an ultra-thin card type label. Bind the tag ID and personnel information in the system. When a person enters the work area, the RFID long-distance reader is used to realize entry judgment and location recognition.
2.2.2 2.45G long-distance reader:
Place the reader outdoors. At least 2 units are required in one system. If it’s positioning, you need more. Specific installation should be carried out according to the site environment. The general principle is to install one every 150 meters, and it can also be installed in corners and some areas that require special monitoring. The positioning principle of this system is regional positioning, which is based on the position of each reader. Therefore, the accuracy of positioning depends on the recognition distance of the reader. The recognition distance of the reader can be adjusted, so the positioning accuracy is considered At the same time, the distance of the card reading and the overall cost of the system should also be considered. That is to say, the higher the positioning accuracy, the closer the card reading distance is, the higher the cost. Please note!!!!!
The MEIC long-distance reader can realize the self-organizing network function, that is, the reader can only be used for electricity, and there is no need to construct and arrange the data line. The distance between readers must be less than 500 meters.
2.2.3 Central control machine:
The central control unit is installed in the center of the venue. The MEIC remote reader is transmitted to the central control unit after being connected to the network. In addition to receiving radio frequency signals, the central control unit can also realize the data forwarding function, which can realize 3G, TCP/ IP etc. are transmitted to the system center.
2.2.4 Management Center Host:
Installed in the monitoring room, the server is equipped with an electronic patrol system, and the construction personnel are monitored through the computer. It is connected to the central control computer through a serial port.
2.3 Other matters
(1) The number of readers and the installation method are determined according to the actual situation of the site, and the two parties shall negotiate and resolve.
(2) Software function: The function of the system software is developed according to the customer’s requirements, please communicate with the software developers of our company before the software development.
Chapter 3 System Features
3.1 Excellent performance
High recognition reliability: 100% front-end recognition rate. As long as the cleaning staff correctly wear the 2.4G active radio frequency card (unless it is broken), it can be read by a nearby card reader.
Long recognition distance (0-80 meters): It can reach a stable distance with a radius of 50M in complex areas such as the community, and the information sent by the tag card within this range will be read.
Extremely high anti-collision performance: Each detection point can simultaneously identify up to 200 construction personnel’s information.
High recognition stability (error rate is less than one hundred thousandths), truly achieve no errors and no missing cards.
Fast recognition speed: the fastest recognition speed can reach 200 km/h, that is, the dynamic tag card can also be recognized.
Highly precise positioning, the minimum positioning distance is 2-5 meters. Need to use positioning trigger device.
3.2 Convenient and wide application
Taking into account the complexity of the field environment wiring and the convenience of construction, the RFID long-distance reader can realize the self-organizing network function, data transmission does not need wiring, and only provides 12V direct current.
3.3 High security and stability
With safe explosion-proof, dust-proof and waterproof performance
High anti-interference, no special requirements for tunnel interference source and surrounding environment, strong environmental adaptability
The internal circuit is highly integrated, the device failure rate is minimized, and the operation is reliable
Using active identification card, no electromagnetic pollution, maintenance-free, safe to use
3.4 Simple and convenient operation
The software has a full Chinese menu with a good operation interface
Integrated structure design of wireless monitoring substation, convenient and quick installation
Identification tag built-in battery, ultra-low power consumption, no external miner’s lamp power supply, no need to charge
3.5 Rich query and report functions
Query and report output, printing functions are simple and easy to operate
Can query the attendance information of cleaning staff
Can query the movement trajectory of cleaning staff
Various information reports can be output as required (such as: entering the cleaning area time report, personal attendance daily report, cleaning staff attendance monthly report, etc.)
You can remotely view the real-time situation of street cleaning on any computer with Internet access, without having to go to the scene.
You can know at any time how many people are in the cleaning area, who are these people, and can be displayed on the LED display at the same time. The specific display content depends on the size of the display (optional)
Chapter 4 System Function
4.1 Attendance management
Through the card reader, it can be judged that the cleaning staff is the entry and exit record at any time.
Can add, modify, and query cleaning staff and department information.
Employee Attendance Inquiry: The attendance status of personnel can be inquired by department and various specified conditions, such as: number, name, shift, type of work, department and other query conditions; it can be automatically sorted according to any conditions;
4.2 Location tracking
You can inquire at any time and display the identity, quantity and distribution of personnel and equipment in a certain area.
Query the current actual position and activity track of one or more persons and equipment.
Record a series of information such as the arrival/departure time and total working hours of relevant personnel and equipment at any location, which can supervise and implement whether important inspection personnel (such as grid supervisors) conduct on-site inspections on time and on-site, or conduct various inspections. The detection and processing of the item data fundamentally eliminates related problems caused by human factors.
4.2 Monitoring linkage
The system automatically analyzes the monitoring resources near the cleaning staff, and the user can select the nearest resource for monitoring.
The user can select monitoring resources, the system automatically accesses video images, and the user can manipulate the rotation direction of the camera, zoom in, and stretch the image.
4.2 Device management
Register RFID electronic card information and provide functions such as search, query, modification, and deletion.
Register RFID reader information and provide functions such as search, query, modification, and deletion.
4.2 Personnel management
Register cleaning staff information, and provide functions such as search, query, modification, and deletion.
Associate cleaning personnel information with RFID electronic card information, and provide functions such as unbinding.
Associate cleaning area information and provide unbinding function.
4.3 Cleaning area management
Register cleaning area information, and provide functions such as search, query, modification, and deletion.
4.4 Statistical analysis
Cleaning staff query: You can customize the combination of conditions to query the current area, detention time and other related conditions of the cleaning staff.
Personnel distribution query: query the distribution of personnel in each area, so that managers can easily know the number of people working in a specific area. Click on the corresponding area to get detailed information about the relevant personnel.
Unreached area query: used to inspect and assess the situation of relevant responsible persons and follow-ups, and to inquire whether the special type of work has reached all areas of its work scope. Click on the relevant status to get the detailed records of the arriving personnel and work.
Number of cleaning staff: statistics can be made on the number of cleaning staff entering and exiting the road according to the date.
Regional population statistics: You can arbitrarily set up and manage related cleaning areas, and automatically perform regional population statistics.
4.5 System indicators and main equipment parameters
1. Main indicators of the system
(1) Maximum number of identification cards: more than 10,000
(2) The highest positioning accuracy: 2-5 meters
(3) Missing reading rate: 1 in 10,000
(4) Wired transmission rate: ≥5kbps
(5) The number of concurrent identification sub-stations is greater than 200
(6) The effective receiving distance of the identification substation: the farthest identification is 80 meters, the range is adjustable by the software
(7) The maximum moving speed of the measured target: 50m/s
(8) Wireless working frequency: 2.4GHz
(9) Transmission error rate: ≤10-6
2. Main equipment parameters
(1) Identify the base station
Wired transmission rate ≥10kbps
Wireless working frequency 2.4GHz
Modulation method GFSK
Explosion-proof type intrinsically safe
Working temperature -40℃-60℃
Environmental humidity≤95%
(2) Personnel identification card
Wireless transmission rate ≥256K
Working frequency 2.4GHz
Modulation method GFSK
Working temperature -40℃-60℃
Environmental humidity≤95%
Battery working time more than 5 years
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