RFID personnel positioning management system,ACM1252UU-Z2

　　RFID personnel positioning management system

　　1. Demand Background

　　For large-scale enterprise industrial parks or factories, the positioning and tracking management of visitors, staff and visitors is carried out. The system can obtain the walking route of the person within 24 hours at any time, and can easily take corresponding measures. The park is divided into outdoor management and indoor management. Management, requires equipment installation as convenient as possible.

　　Second, the use process

　　1. Card issuer

　　As shown in Figure 1, the work permit, visitor permit, visitor permit and other documents of the industrial park need to be replaced, and the identity binding is re-bound through the system card issuer, and the staff, visitors and visitors are required to carry them with them. others.

　　Figure 1 Work Permit, Visitor Permit, Visitor Permit

　　2. Location tracking

　　When enterprise managers need to check the movement trajectory of an employee within 24 hours, they can locate and query through the system. The key monitoring sections, office buildings, and construction machinery halls in the industrial park are the key monitoring places.

　　3. Personnel distribution overview

　　Enterprise managers can view the approximate number of people at each monitoring point through the positioning management system, so as to judge the flow trend of personnel. The positioning management system is laid out in the form of red dots, which is vividly reflected.

　　4. Personnel card recycling

　　When the staff resigns, the management personnel recycle the certificate through the system, which can be reused; when the certificate is lost, the system can search and locate the certificate in the park, and when it is confirmed that the certificate is lost, the system will report the loss of the certificate.

　　3. Outdoor positioning

　　1. Application layout

　　Figure 2 Outdoor system layout (part)

　　As shown in Figure 2, it is a partial view of the industrial park. There are a total of 20 spans in the picture, and the distance between each span is about 40 meters. For more accurate positioning, the camera can be installed at the top of each span. a receiving base station. Each person wears a personnel card. When approaching the receiving base station, the system can recognize the effect. The effect is shown in the triangle in the figure. It can be seen that the positions of 14 spans and 15 spans are denser.

　　In addition, managers can enter the ID number of the person to be searched, as shown in the "search object" in the figure, and the system can reflect the target's action trajectory within 24 hours. It can be seen that the target in the figure can be directly Jumping to 20 strides, may run away halfway, there is a certain suspicion.

　　Each receiving base station only needs 220V power supply, so the installation location is generally: street lights, utility poles, global eye poles, and video recordings.

　　2. System topology

　　Figure 3 Outdoor personnel location topology

　　As shown in Figure 3, when the personnel card is within 20-30 meters from the receiving base station, it can be read by the receiving base station. The personnel card sends data every 3 seconds. If too many personnel pass through a certain receiving base station at the same time and miss reading, it can be recognized by the system in the next 3 seconds or the next base station.

　　The distance between the base station and the base station is within 100 meters. Network communication is carried out by wireless means, and finally the information is summarized to the host. It is recommended that one host bring 10 base stations. The host is connected to the database through wireless 3G, mainly considering the convenience of outdoor installation.

　　The card issuer is connected to the computer through the USB interface, which can issue, recycle, and report the loss of the personnel card, and bind the personnel information with the personnel card ID number.

　　4. Indoor positioning

　　1. Application layout

　　Figure 4 System layout of office building (partial)

　　As shown in Figure 4, for the positioning management of office buildings or construction machinery halls, it is mainly to locate the exit of each stairway. A receiver is installed on the top of the passage of each stairway. The personnel card can be read by the receiver at the place, as shown in the red triangle in the figure, it can be seen that there are 1 person in receiver No. 1 and No. 2, and 2 people in receiver No. 3.

　　In addition, managers can enter the ID number of the person to be searched, as shown in the "search object" in the figure, and the system can reflect the target's action trajectory within 24 hours. It can be seen that the target object in the figure has moved from the first floor to the fifth floor. .

　　Each receiver only needs 220V power supply, installed on the ceiling, and the location is selected at the exit of the stairs or at the key monitoring point.

　　2. System topology

　　Figure 5 Office positioning topology

　　As shown in Figure 5, when the distance between the personnel and the receiver is within the range of 5~8 meters, they can be received by the receiver. The distance between the receivers is about 20 meters. The technology of wireless communication between the receivers Carry out transmission, and finally the receiver transmits the signal to the host. It is recommended to bring less than 10 receivers under one host, and the host will connect to the database through TCP/IP.

　　The use time of the personnel card is 1 year, the battery is replaceable, and a reminder can be displayed on the system when there is no power.

　　5. Product introduction

　　1. Personnel card

　　Figure 6 Rendering of personnel card

　　Staff, visitors, and visitors must carry a staff card with them. The effect diagram is shown in Figure 6. The staff card is powered by a button lithium battery, and the use time is about 1 year. When the power is low, the system will have corresponding Reminder, convenient reminder to replace. Considering the combination with the high-frequency 13.56M access control system, a passive tag is placed inside the personnel card, and the specific characteristics are shown in Table 1.

　　Table 1 Personnel card characteristics

　　2. Receiving base station

　　Figure 7 The installation diagram of the receiving base station and the installation site of the case implementation

　　The receiving base station has the function of self-organizing network. Considering the inconvenient wiring outside the industrial park, the system design connects all the base stations to the network. Based on the on-site environment, it is recommended that the installation distance of the outdoor base station be within 100 meters to achieve accurate positioning. When the personnel card is within 20~30 meters from the base station, it can be read.

　　A single base station can not only communicate with adjacent base stations, but also with spaced base stations. The advantage of this design is to make the system work more safely and stably. When a base station cannot work (such as power failure), the system It will automatically jump to communicate with the next base station, thus ensuring that the system can work normally.

　　In addition, for the base station that fails, the system will actively send out an alarm message, which is convenient for the staff to make repairs in a timely manner. The characteristics of the receiving base station are shown in Table 2.

　　Table 2 Characteristics of the receiving base station

　　3. Receiver

　　Figure 8 Schematic diagram of the receiver

　　The receiver is mainly used in office buildings and construction machinery halls. It is mainly installed on the top of the corridor at the exit of the stairs. The difference from the receiving base station is that the base station is installed outdoors and the receiver is installed indoors. When the personnel card is within 5~8 meters from the receiver, it can be read by the receiver. Other functions are the same as those of the base station. The schematic diagram of the receiver is shown in Figure 8, and the characteristics are shown in Table 3.

　　Table 3 Host characteristics

　　4. Outdoor host

　　Figure 9 Outdoor host and case implementation test site

　　The function of the outdoor host is to collect the data of all base stations in the local area network and send it to the server. It is recommended that the number of base stations connected to a single host should not exceed 10. The characteristics of the outdoor host are shown in Table 4.

　　Table 4 Characteristics of outdoor host

　　5. Indoor host

　　Figure 10 Three views of the indoor host

　　The difference between the function of the indoor host and the outdoor host is that the indoor host is installed indoors, not waterproof, installed next to the router or computer, communicates through TCP/IP, and other functions are the same as the outdoor host. The characteristics of the indoor host are shown in Table 4.

　　Table 5 Indoor host characteristics

　　6. Signal amplifier

　　Figure 11 Signal amplifier

　　As shown in Figure 11, the purpose of the amplifier is to increase the coverage of the signal. If the base station or the receiver is blocked or the distance is too far, the host may not be able to receive the information of the personnel card. At this time, the signal can be sent to The amplifier is used as a relay, and the amplifier sends the signal to the host for processing. The characteristics of the amplifier are shown in Table 6.

　　Table 6 Amplifier Characteristics

　　7. Card Issuer

　　Figure 12 Three views of the card issuer

　　The card issuer uses a USB interface to connect to the computer. The card issuer operates on the active card in the personnel card, which can realize functions such as card issuance, recycling, and loss reporting, and connect the system to bind the personnel information and the ID information of the personnel card. The appearance is shown in Figure 9, and the specific function description is shown in Table 7.

　　Table 7 Card Issuer Parameters

　　6. System advantages

　　1. Long reading and writing distance

　　The reading and writing distance of active personnel cards is much larger than that of ordinary personnel cards. The system will monitor and locate personnel in an area ranging from 20 to 30m to ensure accuracy. In this way, when monitoring and managing personnel, the location of personnel can be quickly located. trajectory of action.

　　2. No dead angle identification

　　Since the wireless signal of the personnel card is sent out in the form of spherical waves, there is no special requirement for the wearing position of the personnel card carried with you, which fully reduces the situation that the blind spot cannot be identified and makes the positioning more accurate.

　　3. Little radiation effect

　　The passive personnel card requires the host to provide energy when working, so the wireless signal transmission power of the host is relatively high, and when the wireless signal power reaches a certain value, it will be harmful to the human body. Compared with passive personnel card, active personnel card can provide energy by itself, so that the transmission power of host, receiving base station, receiver and personnel card can be made relatively small, which is equivalent to 1/10 of mobile phone, which is basically harmless to human body.

　　4. Ad-hoc network function

　　The receiving base station and the receiver itself have the function of self-organizing network, so there is no need for additional network cables, and there is no need to deploy the GPRS network, because the GPRS network has to pay the basic phone bill every month, and the cost is relatively high. Using the wireless network ad hoc network function, it is more stable and at the same time, a one-time investment, which greatly saves the cost.

　　5. Long working hours

　　The active personnel card uses wireless technology with low data volume and low power consumption. The sleep power consumption is uA level, so that the active tag can work for a long time, and the working time can be as long as 1 year. The battery adopts replaceable button lithium Battery, easy to replace.

　　7. Equipment list

　　According to the system design, the list of equipment used in the statistics is as follows. The specific equipment list needs to be communicated and confirmed by both parties. A preliminary equipment list is shown in Table 8.

　　Table 8 Preliminary Equipment List

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