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WIFI-RFID real-time positioning system solution

chrispeng January 7, 2022 Other

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1. Brief introduction of WIFI-RFID real-time positioning system solution

The WIFI-RFID real-time positioning system solution combines multiple technologies such as wireless networks, radio frequency identification (RFID) and real-time positioning, and proposes a new real-time positioning system solution concept based on wireless local area network radio frequency identification technology, which combines well The advantages of RFID and WIFI wireless local area network. Where the wireless local area network is covered, the system can track and monitor various assets and personnel at any time, and accurately find the target objects, so as to realize real-time positioning, monitoring and management of assets and personnel. The real-time positioning system solution consists of electronic tags, locators and positioning servers. Among them, the locator is an RFID reader with wireless routing function independently developed by our company, and it can also use our company’s general RFID reader and wireless beacon developed by our company. The locator is used to receive the RSSI and ID information from the RFID electronic tag, and upload it to the positioning server through the wireless local area network.

Compared with other technologies, RFID technology has a cost advantage, andRFIDThe positioning technology has little requirement for the environment and the environmental impact it receives, with high positioning accuracy and large transmission range; RFID technology can locate the object while also reading a large amount of information about the object from the positioning target. At present, RFID-based positioning technology on the market is mainly based on reader antenna positioning, which has many reader sites, high cost, and poor positioning accuracy. The real-time positioning system solution is characterized by low electronic system complexity, easy implementation and low cost; high positioning accuracy and strong anti-interference ability. The system has ultra-low power consumption and has broad application prospects.

2. Comparison of WIFI-RFID real-time positioning system solutions

At present, the traditional RFID positioning technology lacks the core positioning algorithm, and only relies on the RFID reader for regional positioning, and there are many blind spots that cannot provide precise positioning. The WIFI-RFID real-time positioning system solution launched by the network frequency integrates the characteristics of WIFI and RFID. The background uses an accurate positioning algorithm based on RSSI signal strength, and the radio frequency front end uses an active RFID system with lower power consumption and cost. The following focuses on the WIFI-RFID real-time positioning system solution of the network frequency and a brief comparison of the existing wifi positioning.

3. WIFI-RFID real-time positioning system solution composition

The WIFI-RFID real-time positioning system solution consists of RFID electronic tags, wireless LAN access points, wireless routing RFID readers, RFID beacons,

Compatible with positioning server software. Can provide customers with rfid positioning, wifi positioning and wifi-rfid real-time positioning system solutions.

RFID electronic tag: an active RFID tag with a signal strength RSSI function. Each RFID tag corresponds to a unique ID number, which is convenient for software identification and data transmission. The RFID electronic tag periodically sends wireless signals, including tag ID information, wireless sensor information and alarm information to the wireless router RFID reader.

Wireless router RFID reader: set wireless AP, wireless router, RFIDReaderIn one, the wireless router RFID reader/writer receives RFID electronic tag information or RFID beacon information and transmits the signal to the positioning server.

RFID beacon: Receive RFID electronic label information, and forward the information to the wireless router RFID reader, with data forwarding, wireless relay and frequency band switching functions.

Positioning server: Positioning server is a web-based visualization software platform. By processing the signal sent by the tag or wireless device, the specific location of the tag or wireless device is determined and displayed on the electronic map. The positioning server also monitors the status of the tag and has an alarm function.

4. WIFI-RFID real-time positioning system solution related software

1. Locate server software

After the positioning server receives the instruction content of the control label sent from the label manager and the positioning monitor, it converts it into a data packet that the label can identify, and sends it to the label to realize the function of controlling the label. Receive the data sent by the tag, receive the wireless signal data sent by the tag, and information such as temperature. After analysis, save it in the system.

1) Label command control: used for electronic label communication and forwarding label control commands;

2) Tag location: Based on a unique high-precision location algorithm, the tag location can be accurately calculated according to the received wireless signal strength;

3) Tag alarm: According to the returned information, analyze the status of the tag, judge the trigger of the warning, and send out an alarm message in an emergency.

Features of location server:

1) Intuitive and visual web management interface. Users can monitor and manage positioning information in real time through a visual software interface, such as real-time locations of assets and personnel, location movement records, trajectory analysis, and event management.

2) Simultaneously manage multiple tags or wireless devices, and simultaneously locate and track target objects and position management.

3) Seamless integration of third-party software, developmental architecture design, seamless integration of existing middleware, database, ERP system, workflow and other systems, and automatic monitoring and reporting.

4) Automatically generate and send alerts

5) Real-time location and status query

6) Analysis of historical movement trajectory

7) Provide API application programming interface and SDK (software development kit) to speed up the development of third-party systems and integration of application software.

2. Positioning monitor

The location monitor is a location management platform based on WEB mode, without any client software installation, simple deployment and easy operation. The positioning monitor integrates monitoring, query, and collection of positioning information. Combined with the actual map, the location of the tag and the historical movement track can be displayed on the map in real time. It can also determine whether the tag has disappeared and whether it triggers corresponding warnings and other information. After the personnel and assets wear or bind tags, the positioning monitor can automatically monitor the real-time location of the assets or personnel, and perform real-time positioning and management of the personnel and assets intuitively and visually.

The main function:

1) User management: Display all user information, set and manage basic user information.

2) Real-time positioning: The first independent research and development in China, the original positioning algorithm, the real-time position of the accurate positioning tag can reach 3-5 meters.

3) Area alarm: The server can set the alarm area. When the tag enters or exits the alarm setting area, the server area alarm function will be triggered.

4) Instant alarm: The tag actively sends an alarm signal to the server, and the server interface displays the alarm information in real time.

5) Disappearance alarm: If the tag is powered off or the tag goes out of the wireless network coverage area, the server alarm will be triggered.

6) Historical track analysis: The server can replay the running track of the tag and analyze the historical location information of the tag.

7) Wireless sensor: By setting the number of temperature, humidity, gas density, pressure, vibration, etc., exceeding the number will trigger the wireless sensor control function of the server.

8) Label management mode: Enter the personalized information of the label, classify and manage many labels, track a single label, and automatically generate label log management reports.

9) Map management: According to the operation status of the label, the electronic map of the location of the label can be automatically switched.

3. Scenario planning software

Sampling positioning tool software designed for deployment in system scenarios. Use this software to deploy the location, locator, positioning point and other functions of the positioning system, load the map, set the trajectory route; perform sampling management on the sampling point of the system positioning card, upload it to the server, and achieve the positioning purpose.

The main function:

1) Site management: Set up multiple sites, each scene of each site, location information, map distribution AP, map area, map track map information.

2) Locator management: add or delete locators on the map.

3) Label management: increase sampling labels.

4) Sampling management: Set the actual sampling group, scene, anchor point, sampling point, and label binding information.

4. Locator management software

The locator management software is a management software that specializes in managing and monitoring the AP locator in the positioning system. It can monitor the operation status of the remote AP, and modify and configure the remote parameters of the AP. And can perform maintenance functions such as remote setting and restarting.

The main function:

1) AP Locator list: You can add, modify, and delete the locators in the list, and filter the APs in the list based on conditions such as MAC addresses, and implement batch operations on the locators.

2) Configure AP: Configure AP parameters in batches. The configurable parameters include: SSID, Channel, IP, DHCP, MAC filtering, etc.

3) Set the basic information of the AP: In order to facilitate the management of the AP, set some management information for the AP (such as MAC, login name, password, etc., this information is only saved in the database, not written to the AP).

4) View AP scan: View the scan information returned by the AP.

5. WIFI-RFID real-time positioning system solution features:

It can be set up on the existing wireless local area network, and the installation and implementation are flexible, convenient and quick; the positioning tag can be placed on any assets and personnel to achieve real-time and accurate positioning of assets and personnel.

Support wifi positioning, rfid positioning

Long-distance recognition, indoor and outdoor positioning, RSSI field strength indication and time difference positioning can be used at the same time for special needs, and the accuracy can be controlled within 3 meters.

Two-way communication mode, dynamic management of tags, LEDs and alarm prompts.

The unique software and hardware design, combined with time division and broadcast mode, greatly reduces wireless signal collisions, and has good anti-collision characteristics.

High reliability, working temperature -30℃~75℃, waterproof and dustproof, work normally for 24 hours in harsh environments.

6. WIFI-RFID real-time positioning system solution design

1. Basic functions of WIFI-RFID real-time positioning system solution

1) Positioning monitoring

The icon displayed on the map corresponds to the person or thing bound to the label;

Monitor the label in real time, and display the current position of the label on the map;

The label flashes to indicate that there is an alarm;

Tags are grouped and displayed with different icons;

During the positioning process, the smooth movement of the icon can be seen in real time;

Search person’s name and status:

The specified label can be tracked, and the map automatically switches with the movement of the label;

Move the mouse over the icon to see the information and status of the icon;

After clicking the icon, the detailed information of the person can be displayed;

You can manually switch the map to view the activity of all tags on the specified map;

The map can be zoomed in and out, adjusted to a suitable size;

The map will automatically switch floors when tracking a single label.

2) Real-time alarm

Trigger the alarm, pop up the page, sound the alarm, and display the corresponding video recording;

After you click “Handle”, the page can be closed, otherwise it will keep reminding;

Real-time alarm list.

3) Track playback

You can customize and modify the trajectory;

The movement track is displayed smoothly;

You can lock a label, play according to time period, display movement (with or without track), and switch the map;

Can be played in full screen;

4) Label management

Tag management is divided into police officer and prisoner management.

Label issuance, through the card issuing machine, the label ID is automatically obtained;

Bind the tag with the person: Bind the specified person’s information with the tag worn by it, and the tag displayed in the system represents the person wearing the tag;

The corresponding personnel for label replacement;

Prisoner information setting: the prisoner’s information can be set and managed in the system and bound to the prison;

Police information setting: the police information can be set and managed in the system;

Label grouping and classification: Labels can be grouped and classified according to actual conditions.

5) Alarm management

Button alarm setting: The label has a button alarm function, when an emergency occurs, the button can be pressed to send out an alarm message;

Cross-border alarm-some areas are restricted areas, and an alarm message will be issued if tags enter or leave the area without permission

Disappearance alarm setting-There are many factors for label disappearance (such as dead battery, label crossing the signal coverage area, etc.). You can set the disappearance alarm condition and alarm level of the specified label. If the label disappears, the corresponding alarm will be triggered;

Low battery alarm setting-the label will report its current power to the system every once in a while, and the minimum power limit can be set in the system. Once the label power is below this limit, an alarm message will be issued;

Alarm for failure to follow the prescribed route-specify the walking trajectory of a certain tag in a certain period of time, once the label is found to deviate from the specified walking trajectory for a certain period of time, an alarm message will be issued;

No accompanying personnel alarm-bind the positioning tag and the manager one-to-one or many-to-many. When the walking trajectory of the positioned label is inconsistent with the walking trajectory of the bound label, an alarm message will be issued for a certain period of time.

6) System management

User management: Various user permissions can be set. After users log in to the system, they can perform corresponding operations and browse content that meets the permissions according to their own permissions.

If the map has been divided into areas, you can set the conditions for each label to enter and exit each area.

AP locator management: monitor the working status of the AP locator and query historical records.

2. WIFI-RFID real-time positioning system solution expansion function

1) Linkage with video surveillance system

Right click on the label, you can choose to view the video surveillance

When alarming, the camera near the location of the tag can be automatically called to view the video

When the track is played back, the recordings of the same time period can be called at the same time, and they can be played synchronously

Display the camera position on the electronic map, you can click to call

2) Statistical report

Label warning record: View all warning records of all labels or specified labels;

View label report: View the important alarms of the label, the statistics of the number of times of entering and exiting the area and the stay time;

Operation history: view the user’s operation history;

Data statistics can be performed according to the time period;

Count the number of executions of various tasks, the work situation and idle time of a single person, and the peak work period of each position every day;

Perform statistical analysis on the time and area of ​​each alarm event;

Analyze the status of the label and provide a list and location of idle police forces for the reference of the leaders of the police. The analysis indicators are set by the user;

According to user-defined rules, the number of police patrols, time periods and intervals are counted by time period.

Seven, the main application of WIFI-RFID real-time positioning system solution

Logistics warehousing pallets, cargo tracking and positioning

Tracking and positioning of containers and trailers in the yard

Manufacturing workshop tools, work-in-process tracking and positioning

Hospital assets and personnel tracking and positioning

Tracking and positioning of prison inmates and safety supervision

Campus, community, write the assets, personnel, and vehicle positioning of the West Building

Environmental monitoring and personnel tracking and positioning of coal mines and oil fields

Tracking and positioning of assets and personnel in public places

Positioning and tracking of personnel in children’s experience halls and playgrounds

8. WIFI-RFID real-time positioning system solution expansion

The core of the WIFI-RFID real-time positioning system solution solution lies in the core positioning algorithm, which can be expanded to the following types according to the category of the locator:

1) WIFI-RFID real-time positioning system solution

The locator uses a wireless router RFID reader to provide wifi-rfid positioning system solutions

2) RFID real-time positioning system solution

The locator uses a universal RFID reader to provide rfid positioning system solutions

3) WIFI real-time positioning system solution

The locator uses a WIFI card reader to provide a wifi positioning system solution

4) RFID wireless beacon real-time positioning system solution

The locator uses RFID beacons, which need to be combined with RFID readers to provide wifi-rfid positioning or rfid positioning system solutions based on rfid beacons

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