sh-rw personnel positioning system based on semi-active RFID technology,Hotel Access Control System

　　sh-rw personnel positioning system based on semi-active RFID technology

　　一. RFID technical description

　　1. Document description

　　The purpose of this program is to let integrators, engineers and users understand the design concepts, principles, overall planning and how to play a huge role in personnel positioning of the Internet of Things RFID positioning technology, and elaborate on the working principles and installation locations of related Internet of Things equipment. Information so that integrators, engineering companies, and users can correctly understand the revolutionary changes brought about by the Internet of Things in the field of personnel positioning and the current shortcomings of the technology, and establish a correct understanding of the Internet of Things in the field of personnel positioning. If you encounter any confusion or confusion during the reading process, please contact Shanghai Renwei Electronic Technology Co., Ltd. Shanghai Renwei Electronic Technology Co., Ltd. has the final right to interpret this document.

　　2. Introduction to semi-active technology

　　Semi-active RFID products, combining the advantages of active RFID products and passive RFID products, under the trigger of the low frequency 125KHZ frequency, let the microwave 2.45G play its advantage. Semi-active RFID technology, which can also be called low-frequency activation trigger technology, uses low-frequency short-range precise positioning, microwave long-distance identification and data upload to solve the functions that pure active RFID and passive RFID cannot achieve. Simply put, it is to activate positioning at a short distance, identify and upload data at a long distance. Truly achieve the demeanor of a general of "strategic strategy, decisive victory thousands of miles away".

　　3. Abbreviations and explanations of terms

　　RFID/Radio Frequency Identification: A communication technology that can identify specific targets and read and write related data through radio signals without requiring mechanical or optical contact between the identification system and specific targets

　　Semi-active electronic tag: frequency band 2.45G composite 125K technology, the tag has been in a dormant state before entering the working state, which is convenient for the extension of the life of the tag's power; when the tag enters the reading area of the reader, it will receive the radio frequency from the activator at the same time The signal encourages and enters the working state.

　　Low-frequency activator: in real-time addressing state, real-time "active" detection of the surrounding active electronic tags, and send its own ID code and antenna ID number to the active electronic tag receiving module.

　　RFID Reader: Receive and demodulate the radio frequency signal sent by the electronic tag (including the ID information of the tag, the ID code of the activator and the ID number of the antenna, etc.)

　　Electronic anti-detachment wristband: The semi-active electronic tag is made into a wristband type. When the electronic wristband is removed, the wristband that can send out an alarm message is called an anti-detachment electronic wristband

　　Handheld Reader: Also called a handheld terminal, it can receive the wireless signal sent by the positioning tag, and display simple information of the person wearing the tag on its own screen.

　　4. Comparison of semi-active RFID personnel positioning technology compared with other personnel positioning technologies

　　Compared to active RFID products:

　　Semi-active RFID products do personnel positioning management, the positioning accuracy is more accurate, and can be located in each room; to achieve the same positioning accuracy, semi-active RFID products, the cost is much less, to achieve the same effect, the cost is basically active RFID Half of the product;

　　Semi-active RFID products, the recognition distance error is smaller, about 10cm, while active RFID can only be a rough fuzzy distance, the signal is erratic, and there is no way to be accurate;

　　Semi-active RFID tags are usually dormant, do not consume electricity, and are very power-saving. The battery can be used for 5 years, while active RFID tags usually send signals continuously, which consumes a lot of power.

　　Relative to GPS satellite positioning:

　　Semi-active RFID product positioning can accurately locate each room in each building, while GPS positioning can only reach a certain building in a certain street, a certain district in a certain area of the city.

　　Relative to mobile phone area positioning:

　　Semi-active RFID product positioning can accurately locate each room in each building, while mobile phone positioning can only go to a certain building in a certain street in a certain area of the city.

　　To sum up, in comparison, semi-active RFID technology products have their unique advantages in terms of economic cost, positioning accuracy and effect. It is also the first choice of semi-active RFID by Shanghai Ren Microelectronics. The reason why technology is the company's core technology.

　　2. Analysis of personnel positioning requirements

　　1. Demand analysis

　　The current traditional personnel management mode has the following problems: the area is relatively scattered, and multiple people are required for on-site management; the distribution of personnel cannot be known in real time, and the location of personnel cannot be determined (whether they leave without authorization, etc.); everyone cannot be managed; When it comes to a dangerous situation, the location of the personnel cannot be determined in time; the trajectory information of the personnel cannot be viewed. The traditional personnel management model is not only low in management efficiency, but also cannot fundamentally solve the problem of supervision to everyone. Although the application of semi-active RFID technology personnel positioning system can fundamentally solve the problems of personnel management. Semi-active RFID technology not only solves the problem of on-site management by multiple people, but also greatly improves work efficiency. This mode can greatly improve the management mode and reduce the cost of personnel management.

　　2. Personnel positioning functionality

　　real time monitoring

　　Map real-time monitoring, which can display the distribution of personnel and equipment

　　Personnel query positioning

　　can query and locate personnel information, and the positioning error is within 5 meters

　　Personnel history track playback

　　It can replay the historical trajectory of the personnel, perform animation display, and replay the trajectory route of the personnel from one area to another area

　　Call the police

　　When people gather in the area illegally, leave the designated area or enter the illegal area without authorization, the system will give an alarm

　　Video linkage

　　RFID technology and existing video linkage can view the scene of the accident in real time, providing a basis for the deployment of relevant personnel to solve emergencies

　　三. System introduction:

　　1. System principle

　　The semi-active RFID technician positioning system uses RFID electronic tags as the most advanced identification code at present. It has the characteristics of not easy to break, reliable data, long service life, and long effective communication distance. It is an alternative to barcodes and infrared rays. The best choice for logos. Install it on the controlled target as the unique identifier of the target for tracking and positioning.

　　At work, managers track and locate targets through networked wireless identification base stations.

　　A. Semi-active RFID electronic tags

　　Semi-active RFID electronic tag, which integrates the advantages of active RFID electronic tag and passive RFID electronic tag, as a special marker. In normal conditions, it is in a dormant state and does not work, and does not send RFID signals to the outside world. Only when it enters the activation signal range of the low-frequency activator, the tag starts to work.

　　B. Working principle of semi-active RFID automatic identification

　　Combined with a low-frequency activator, a semi-active RFID tag, it works normally after being activated. The activation distance of the low-frequency activator is limited. It can only be accurately activated in a small distance and a small range. In this way, the low-frequency activator is used as the base point for positioning, and different base points are installed in different positions, and then used for a long distance in a large area. The reader recognizes and reads the signal, and then uploads the signal to the management center in different uploading methods. In this way, the entire process of signal collection, transmission, processing, and application is completed.

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