System working mechanism 
 Automatically identify student safety message service system is the use of high-tech long-range radio frequency identification technology, mobile phone text messaging service platform, and computer information processing technology developed the world's leading integrated information management system. The hardware platform after 20 years of development and testing process, the information provided for the medium and small schools, parents and service platform. 

 Its mechanism is: the chest of each student hanging a long-range active proximity card near the reader, when the student arrives at the gate, immediately read the students wear the card to, and proximity cards card number output to student safety messaging service system, installed on your computer, the system immediately in accordance with pre-recorded information to the students' parents a mobile phone text messages, such as "your child has reached school"; Likewise, if students leave the gate, then send a SMS, the system immediately in accordance with pre-recorded information to the parents of students, such as your children leave school. " 

 With the automatic identification students Peace messaging system, parents can not only timely access to the children to school, leave school time, including the child's test scores, job reviews, the notice of the recent performance and school event information can also be promptly sent to the parents hand, parents can be the first time to understand the situation of children in school, in order to effectively meet the school remedial education for children; With the automatic identification of student safety messaging system, schools can be more effective student management, and close communication with parents, and thus the overall to improve the teaching level, and also lay the foundation for subsequent campus information management. 

 Automatically identify students safe messaging system for communication between parents, schools and children to limit care to become "anytime, anywhere". 

 Hardware description is 
 ? Of RV1-DS-4MS reader 



 Product Features: 

 Dedicated control the tracking of personnel and vehicles, safe SMS wide-channel system 

 ◆ external antenna, with two separate output 
 ◆ be able to achieve an accurate and out of the direction of judgment 
 ◆ reader distance, and read out the distance to provide 25cm-4.5m (vertical) 
 ◆ install the channel width, the reader width range up to 3-32 m (horizontal) 
 ◆ multi-antenna up with 16 antennas, generally less than 10 meters wide door with eight antenna 
 ◆ Anti-Collision, 16 antenna speeds of up to 320 / sec, a daily line identification 20 card 
 The identification speed, read speeds of up to 80 km / h 
 ◆ high-precision read and misread rate of less than one in one hundred million 
 ◆ easy installation, simple antenna production methods 
 ◆ reader without direction limited to 360 degrees at any angle can be read, 
 ◆ The card can be placed anywhere in the body, the real automatic identification 
 ◆ can be used for automatic identification of goods vehicles or personnel 
 ◆ card low battery alarm automatically 
 ◆ 26/34 Wiegand, RS232 output 
 ◆ Operating Frequency: emission frequency of 125KHZ; receiving frequency 4MHZ; 
 ◆ Federal Communications Commission FCC certification, EMC certification, R & TTE, the DTI, the CE certification 
 ◆ external antenna number from 4-16 for selection (depending on product model X) 
 ◆ Adopt buried antenna, the construction is simple and convenient, there are no obstructions above the ground, therefore particularly suitable for the office building, school gates use 

 Technical parameters: 
 Dimensions: (H) 325 × (W) 2850 x (thickness) 65 mm 
 Power supply: 15 ~ 28 volts DC @ 400mA 
 Operating Temperature: -20 ~ +60 ° C (applies to both indoor and outdoor installation) 
 Operating Humidity: 0 - 80% non-condensing, the signal passes through the liquid sensing distance without any change 
 Display: LCD display precision 
 Output format: two 26/34 Wiegand, RS232 output 
 Operating Frequency: emission frequency of 125KHZ; receiving frequency 4MHZ; 

 Applications: 

 Particularly suitable for a wide channel of RV1-DS-the XMS series reader, many people at the same time in and out of the occasion, such as office building and the school entrance, for many people at the same time and out of track. The product information management system in the People's Liberation Army General Staff Headquarters, Beijing primary and secondary schools safe SMS information system, Chengdu primary and secondary school students and out of the tracking and management system, a national key high schools in Jingzhou, Hubei safe messaging system, the Shengli oilfield vehicle management system, as well as Shanghai, Jiangsu more than 10 of the Electricity Generating Authority of units of vehicles entering and leaving the tracking and management system widely used. 

 General peace SMS systems are based on two reader to determine the direction of personnel access. Each reader to read the cards and output, according to the records of the two reader has to determine into or out of so many loopholes. 

 If the staff just after the next to an antenna but not to go out and immediately he went out the signal sent out the actual situation is the officer still inside. Eaten this loss in the mobile operator in the safe messaging system, students just by the door, stood a moment, the system will give parents made a text message of a child leaving school to give parents an empty worry about this report came close to being parents court; if the staff have been wandering in and out of the antenna, the system will generate a lot of useless records; if the staff had been standing next to one of the antenna, the system will continue to receive the card number, because the two reader output identical to the signal format, a lot of system records the number of parity to determine the entry and exit, the system will give a signal to go out when the second records, the reality is that the staff still inside. Have been stopped at the place of the two reader signals the transfer of the signal here is very complicated, there may be a dead zone, there may be a antenna weak when the strong, there may be signal distortion, it is possible the card here non-stop output or does not work. 



 The most fundamental reason is two reader is completely independent of each other's equipment, the IDENTEC company in the UK has 20 years of experience in the field of radio frequency identification, development of RV1-the DS 4MS of RV1-DS-8MS long-distance The reader can eliminate the above problems occur; because it directly with the two antennas, the reader knows exactly which area of ??the card in the antenna and to track the signal location and movement of cards in every moment in the region, whether to leave when the signal output, whether the false into the fake out, whether a redundant record. Tracking mode to meet you each time data a unique variety of directions. 

 Whether it is into another out when the two card readers that fit together to solve a channel in the parking lot (second reader the wrong Barrier open again), goods and personnel tracking (to solve the false into the leave out a variety of identification, shielding, RF injury, direction restrictions, physical barriers and other issues). It is your perfect solution. 

 How to install: 

 Each antenna size of 3.0 x 4.0 m, between the antenna and staggered tuning capacitance value depends on installation environment to do the appropriate adjustments to the antenna using a single copper cable, wire sizes 1.5mm 2. Antenna buried in from the ground - The 6cm underground. Put away the antenna, the first surface of the antenna covered with a layer of nylon hot glue, and then poured the asphalt can be 



 How to install the tuning capacitor 





 ? Induction card 


 Product Features: 

 Long-distance reader: RV1 reader and external 1.5mx 1.5m antenna, without outside interference, the reading distance of up to 3 m 
 ◆ re-read the: RV1 reader on the same time recognize the 320 proximity cards 
 ◆ fast reader: the the RV1 reader, up to 80 km / h 



 Technical parameters: 

 ◆ Size: 95 × 64 × 5 mm 
 ◆ working life: with a battery life of 3 years or more, the battery runs out can be replaced 
 ◆ Working temperature: -20 ~ +60 ° C 
 ◆ Working frequency: 125KHZ 4MHZ; 
 ◆ CE DTI & the U.S. FCC certification 

 Chapter VI of the reader mode 

 A. Reader mode: Safe mode (Safe Mode) 

 Two. The working mechanism 

 Shown: from the antenna group A went to the antenna group B, and said into the school; antenna group A show the school come from the antenna group B; 







 The spacing of the two antennas in more than four meters, the antenna group corresponding to the terminal board Wiegand output connected to the controller (single door controller, for example) Wiegand 2; antenna B corresponds to the auxiliary board Wiegand output Wiegand connected to the controller 1. The output of the reader only gives the actual location of the proximity card, inside or outside (B antenna output on the outside, the A antenna output on the inside). In order to really judge a student into the school or school leavers, but also through the PC software to determine. 

 The movement direction of the card 
 Wiegand output data 

 A 
 After the cards close to the antenna group A, then away from the antenna group A to be the dead time, Wiegand output (that card on the outside) 

 A 'B 
 Within the dead time, when the card from A to B until after the dead time, Wiegand output (expressed card inside); If the card after A set of antennas, the dead time has come to, but the card is not yet group B after the antenna, then the first Wiegand 2 output (stuck on the outside); when the card went on, the antenna group B, to be the dead time, Wiegand output (after the said card inside) 

 A "B 'A 
 Within the dead time, when the card from A to B, and from B went to A, until the dead time, Wiegand output (after the said card on the outside) 

 Card in the school 

 Apart from for more than occasion, Cyphertag long-distance proximity card can also be applied to school the following cases: 

 Access 

 Consumption 

 Attendance 

 Borrow books 

 Conference report 

 Examination report 

 School report