外文翻譯--基于智能手機(jī)近場(chǎng)通信技術(shù)的門鎖控制設(shè)計(jì)與實(shí)現(xiàn)（英文）

1、 Abstract--In this paper we propose an integration design of both a near field communication (NFC) and a smartphone to achieve a door lock control system. This design consists of a built- in NFC capabilities of a smar

2、tphone combined with a dedicated application deemed to be a key to open the door by means of the logical link control protocol (LLCP) exchange together with a time stamp to match the user’s own set of password informa

3、tion to verify who is a permissions user or not. When verified the specific door which is secured by this door lock control system immediately opens. I. INTRODUCTION The NFC technology uses the radio frequency identif

4、ication (RFID) technology to perform non-contact standard data exchange between two NFC devices. Previously, the RFID technology was very commonly used in contactless access control cards, electronic tags and ETC sys

5、tems. And now, NFC communication applications of RFID technology have gradually been replaced. NFC technology has gradually become integrated in smartphones which can directly read NFC tags in a message, such as, for

6、 example: credit card numbers, travel card numbers and these transaction records are able to be stored in an NFC tag [1]. NFC communication results are convenient; moreover, this system can also be integrated into a

7、door access security system [2]. This paper proposes a design that does not need to use a complex face identify system, but instead uses a certain safety lock system together with NFC technology. Figure 1 shows the d

8、iagrammatic sketch of the system which includes a magnetic lock, access control systems (ACS) and an NFC based smartphone. Only two steps are necessary for a user to be able to open a door, “sensing“ and “Enter Passwo

9、rd“. In this system with a password application built in the smartphone, the security level will be higher than traditional in RFID door lock systems. II. HARDWARE ARCHITECTURE Figure 2 shows a smartphone and a door l

10、ock system hardware architecture. The access control system can be divided into five parts: micro controllers (MCU), magnetic lock, real time clock module, status indication and the NFC reader module as shown in Figu

11、re 2, which is a low-power MCU chip. In addition to controlling the magnetic lock on/off, buzzer sounds inform and LED lights indicate what is taking place. There are two more functions. First, it reads the time by m

12、eans of a real time clock, which will encode the card number, time and passwords, all which become a serial number. Second, it decodes those data which are obtained from a smartphone with an NFC card reader and compar

13、es the result with its own data area to determine if an individual is an authorized user or not. Figure 3 shows that the door lock system with an internal MCU has become the main function module. The MCU uses a seria

14、l peripheral interface to connect with the NFC reader module. The NFC data exchange format (NDEF) message is designed by using an open source library supported by a smartphone. Therefore, MCU can easily to access the

15、NFC tag information. The MCU uses an I2C interface connected with a real time clock module to obtain the timestamp. When the smartphone accesses the system, the time will be recorded by the real time clock module. Th

16、e system will combine it with the password into a sequence code to identify whether the door can be opened. Hence, this design will strengthen the security of the original password. Design and Implementation of a Doo

17、r Lock Control Based on a Near Field Communication of a Smartphone Chi-Huang Hung *, Ying-Wen Bai, Je-Hong Ren Department of Electrical Engineering, Fu Jen Catholic University, New Taipei City, Taiwan Graduate Institu

18、te of Applied Science and Engineering *, Fu Jen Catholic University, Taiwan Department of Information Technology *, Lee-Ming Institute of Technology, New Taipei City, Taiwan Fig. 1 Arrangements of the door lock system

19、which includes a smartphone control mechanism. Fig. 2 Hardware architecture of the door lock system with a smartphone NFC. 2015 International Conference on Consumer Electronics-Taiwan (ICCE-TW)978-1-4799-8745-0/15/$31.

20、00©2015 IEEE 45III. SOFTWARE DESIGN IMPLEMENTATION The software design is divided into two modules: smartphone and DLS operation module. The smartphone should have an NFC system that can be compatible with our sy

21、stem. The DLS program is designed by using the embedded platform. The internal NDEF message part uses the open source library supported by the smartphone [4]. A. Smartphone Operation Module Flowchart Figure 4 shows th

22、e initial interface and the keypad interface. The initial interface provides the “smartphone ID” which is input into the door lock system. When the system is set to the read mode, the user can enter the user password.

23、 B. Door Lock System Operation Module When the DLS obtains permission, the smartphone provides the interface of the “start numeric keypad password (SNKP)” to the user. The door lock system reads the “numeric password”

24、 and obtains a timestamp via the real time clock module. If the identification of the door lock system “numeric password” is correct, then the door lock system opens the magnetic lock; if the “numeric password” is in

25、error, then the door lock system triggers the buzzer to sound. IV. EXPERIMENT RESULTS Table I shows the actual measurement of the power consumption of each module. The NFC reader module of this design consumes only 15

26、8.4mW standby power. After comparing other designs, we note that our design consumes less standby power than that of other designs. TABLE I THE POWER CONSUMPTION OF EACH PART OF THIS DESIGN Power Consumption Standby

27、Consumption Operating Consumption Active Buzzer 0.55mW 210mW NFC Reader Module 158.4mW 528mW MCU 70mW 73.5mW Total 233.45mW 810mW Table II compares our design with other door access system designs. Design A us

28、es a smartphone with NFC reader communication, and obtains the pre-stored encoding pictures. The smartphone connects to a remote server, decodes the encoded pictures, and obtains a permission password. Design B uses

29、a smartphone with a MCU Bluetooth connectivity. The MCU connects to the NFC reader, and its message is transmitted to the other end of NFC reader. Design A and B both use smartphones with an NFC function to verify and

30、 give permission to open the door. But in this design, we add a personal password that can provide more protection for the system. TABLE II A COMPARISON OUR DESIGN WITH OTHER SYSTEM DESIGNS Design A [2] Design B [

31、3] Our Design Passcode match No No Yes Time stamp No No Yes Convenience Low High High Security High High High Power consumption High High Low V. CONCLUSION This paper is a design of a door lock system whi

32、ch can both identify a “smartphone ID”, and avoid a malicious reading of a non-privileged device. The smartphone obtains the “start numeric keypad password” permission, which is converted into the numeric keyboard in

33、terface. When entering a password there is a limit of 3 times to prevent malicious people from breaking the lock code in order to break into a house. To prevent the leakage of any data message, the “numeric password”

34、 is combined with a timestamp. This design, which does not require the user to have an NFC tag, is both an improved and a more convenient door lock system. VI. REFERENCES [1]. Thomas Korak and Lukas Wilfinger, “Handlin

35、g the NDEF Signature Record Type in a Secure Manner”, IEEE 2012 International Conference on RFID.- Technologies and Applications (RFID - TA), pp.107-112, Nov. 2012. [2]. Peng-Loon Teh, Huo-Chong Ling, and Soon-Nyean

36、Cheong, “NFC Smartphone Based Access Control System Using Information Hiding”, 2013 IEEE Conference on Open System (ICOS), pp.13-17, Dec. 2-4. 2013. [3]. Nurbek Saparkhojayev, Aigul Dauitbayeva, Aybek Nurtayev, and G

37、ulnaz Baimenshina, “NFC-enabled Access Control and Management System”, 2014 International Conference on Web and Open Access to Learning (ICWOAL), pp.1-4, Nov. 25-27 2014. [4]. NFC Data Exchange Format (NDEF), NFC For

38、um Technical Specification, Rev. 1.0, Jul. 2006. Fig. 4. Flowchart showing the smartphone initial interface and the numeric keypad. Low VoltageMCUSCLK MOSI MISO SSVccReal Time Clock Module SDA SCL SCL SDASmartphoneNe