CN109241791B

CN109241791B - RFID-based automatic roll call system for tourist party

Info

Publication number: CN109241791B
Application number: CN201810466520.XA
Authority: CN
Inventors: 周思濛
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-16
Filing date: 2018-05-16
Publication date: 2022-02-22
Anticipated expiration: 2038-05-16
Also published as: CN109241791A

Abstract

The invention provides an RFID-based automatic roll call system for a tourist party, which comprises an RFID member card and a roll call device, wherein an active RFID label and a control module are packaged in the RFID member card; the roll call device comprises an RFID module, a management module and a human-computer interface; the active RFID label is used for storing the identity ID of the corresponding member; the control module is used for reading the identity ID in the active RFID label and responding the authentication initiated by the roll call device; the RFID module is communicated with the RFID label under the control of the management module; the management module initiates authentication to all RFID member cards corresponding to the identity IDs in the member table in each roll calling period, the RFID member cards passing the authentication are regarded as the presence of corresponding members, and otherwise, the RFID member cards are regarded as the absence of the corresponding members; and after the roll call period is finished, counting the number of people in the field and the number of people absent and sending the counted number to the human-computer interface. The invention can track the trace of each member at any time and any place, and the system can give an alarm immediately when the member is absent, thereby preventing the member from missing; roll call is carried out in an identity authentication mode, so that external interference is prevented, and safety is guaranteed.

Description

RFID-based automatic roll call system for tourist party

Technical Field

The invention relates to an application technology of RFID.

Background

In the course of travel, the tour guide is responsible for organizing and managing the tourist groups in addition to introducing the landscape. The tour group is moving continuously, so the tour guide needs to call the tour group members one by one frequently, especially in the process of gathering the departure to turn to the next sight spot after finishing the visit of one sight spot. The roll calling in the travel process is different from the roll calling in a classroom and the roll calling in playground queuing, the roll calling environment in the travel process is complex, the personnel arrangement is disordered, the roll calling work intensity of the tour guide is high, particularly in the scenic spot of the tour guide which is high in image quality and is high in noise, and the tour guide needs to call repeatedly with high sound, so that the labor and the time are wasted.

RFID (Radio Frequency Identification) reads and writes data in a target through microwave Radio Frequency signals to identify the target, and is a support technology of modern computer internet of things. In contrast to other identification technologies, such as bar codes and two-dimensional codes, RFID does not require mechanical or optical contact between the identification system and the target. An RFID label is attached to each target object to be identified, the RFID label stores the information of the object, the RFID label has wireless transceiving capacity, the information in the label can be read out through an RFID reader and is identified, and the reader and the label are in wireless communication through microwaves.

The active RFID tag is provided with a battery, the transmitting power is greatly improved compared with that of the passive RFID tag, and the acting distance can reach more than 10 meters. The active RFID tag also carries a chip that controls the transmission and reception of information. The active RFID tag is larger in volume than the passive RFID tag due to the battery and the control chip. Active RFID is applied to remote product identification in the field of production logistics, and also has applications such as high-speed toll collection ETC in the field of service.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic roll-call system of a tourist party based on RFID (radio frequency identification device), which is used for identifying a target person by roll-call and the like, and applying the RFID technology to roll-call, in particular to roll-call in tourism.

The invention adopts the technical scheme that the RFID-based tourist party automatic roll call system comprises an RFID member card and a roll call device, wherein an active RFID label and a control module are packaged in the RFID member card; the roll call device comprises an RFID module, a management module and a human-computer interface;

the active RFID label is used for storing the identity ID of the corresponding member;

the control module is used for reading the identity ID in the active RFID label and responding the authentication initiated by the roll call device;

the RFID module is communicated with the RFID label under the control of the management module;

the management module establishes a member table containing the identity IDs of all members in the initialization process, sets the total number of people and the roll call period, and initializes the number of people in the field and the number of people absent; each roll call period initiates authentication to all RFID member cards corresponding to the identity IDs in the member table, the RFID member cards passing the authentication are regarded as the presence of corresponding members, and otherwise, the RFID member cards are regarded as the absence of the corresponding members; counting the number of people in the field and the number of people absent and sending the counted number to a human-computer interface after the roll call period is ended;

the human-computer interface is used for supporting human-computer interaction.

The invention has the advantages that the real-time system based on the RFID can track the trace of each member at any time and any place, and the system can give an alarm immediately when the member is absent, thereby preventing the member from missing; roll call is carried out in an identity authentication mode, so that external interference is prevented, and safety is guaranteed.

Drawings

FIG. 1 is a block diagram of an automatic roll call system.

Detailed Description

The RFID-based tour group automatic roll call system is applied to tour group roll call, an RFID-based tour group automatic roll call system (R-AUCA system) automatically finds out whether each member of a tour group is present or not, a tour guide does not need to roll calls orally, and only a roll call device needs to be checked when the roll calls.

The R-AUCA system consists of an RFID member card and a handheld roll-call device, as shown in figure 1.

The RFID member card is internally packaged with an active RFID label, and the identity ID of each member is stored in the label. The control module in the member card executes the authentication response in the system protocol. It is recommended to set the range of the active RFID tag to a range of 10 meters to 20 meters.

The handheld roll call device comprises an RFID module, a management module and a human-computer interface. The RFID module is communicated with the RFID label under the control of the management module, the management module executes authentication initiation and authentication result judgment in a system protocol, and the human-computer interface supports human-computer interaction. The management module completes polling on all members in each roll calling period, the roll calling is successful (on site) after passing the authentication, otherwise, the roll calling is failed (absent); and counting the number of the persons in the field and the number of the persons absent after the roll call period is ended, displaying the number on a human-computer interface, and if the number of the persons absent is not 0, giving an alarm to remind the guide to pay attention.

The alarm mode can be directly sent to a human-computer interface for display, an alarm module can be added to the handheld roll call device, and the function of reminding a guide is realized in a sound, light or vibration mode by driving the alarm mode.

In the roll call, each person carries a card encapsulated with an RFID tag, and personal identification information is stored in the tag. Because the distribution range of people in tourism is from several meters to more than ten meters, only the active RFID can meet the roll call requirement. When a person is in the active RFID action range of the tour guide, the person is 'present', otherwise, the person is 'absent' (far away from the tour group).

The system protocol is that the authentication of the RFID member card by the handheld roll call device is as follows:

in the R-AUCA system, member cards and point names share a secret key K. The system adopts a cryptographic algorithm 3DES or AES to realize bidirectional authentication, the cryptographic algorithm is EK (), and the decryption algorithm is DK ().

a. The system initialization specifically comprises the following steps:

a1. a member table is pre-established in a roll call machine, and each item of the table comprises 4 fields: member serial number, member name, member card ID, member status. The member status is preset to null. The member table maps to a human machine interface.

a2. The roll call machine sets three parameters: total number, number of persons present, number of persons absent. The number of people is preset as the total number of tourists, and the number of people in the field and the number of people absent are preset as 0. The parameters are mapped to the human machine interface.

a3. The roll call device carries out periodic roll call on the members by taking the time T as a period. The period T can be selected from 5-60 seconds.

b. Polling roll call algorithm in one cycle: the roll call device rolls the roll calls one by one from the first to the last according to the member table. The roll call procedure for the ith member is as follows:

b1. the roll call device takes the ID of the member identification code from the member table_iGenerating a random number r, calculating C ═ EK (r | ID)_i) And C is sent. | is the string concatenator.

b2. All member cards receive C.

b3. Each member card calculates D ═ DK (C) and extracts the ID from D; if the ID is not equal to the ID of the user, discarding the ID; if the ID is equal to the own ID, the roll call response information A EK (r | "I am here") is calculated, and A is sent to the roll call device.

b4. The roll call device receives A, calculates B DK (A), extracts r and ID from B, if r is valid and ID is ID_iIf yes, the roll call of the ith member is completed, the member state is set to be 'present', and the member state of the human-computer interface is updated. If r is invalid or ID ≠ ID_iAnd then discarded.

b5. When the roll call of the (i + 1) th member arrives, the roll call device does not receive the roll call response of the (i) th member, the roll call of the (i) th member fails, the state of the member is set to be 'absent', and the state of the member on the human-computer interface is updated.

c. After one roll call period is finished, the roll call device counts and calculates parameters of the number of people in the field and the number of people absent, and updates the two parameters of the human-computer interface. If the number of absent persons is not equal to 0, an alarm signal is sent out.

The RFID is utilized to realize automatic roll call in travel, so that the working intensity of tour guide can be greatly reduced. The R-AUCA system is a real-time system, can track the trace of each member of the tourist group at any time, and can immediately alarm when the member is absent (namely exceeds the active RFID action distance) to prevent the occurrence of the missing accident of the member. Information security is extremely important, and in order to prevent interference and replay attack on roll calling, the roll calling device is used for authenticating the RFID tag by using a computer code technology, so that the security of roll calling is ensured.

Claims

1. The RFID-based tourist party automatic roll call system is characterized by comprising an RFID member card and a roll call device, wherein an active RFID label and a control module are packaged in the RFID member card; the roll call device comprises an RFID module, a management module and a human-computer interface;

the control module is used for reading the identity ID in the active RFID label and responding to the authentication initiated by the roll calling device and based on the symmetric encryption;

the management module establishes a member table containing the identity IDs of all members in the initialization process, sets the total number of people and the roll call period, and initializes the number of people in the field and the number of people absent; each roll call period initiates authentication based on symmetric encryption to all RFID member cards corresponding to the identity IDs in the member table, the RFID member cards passing the authentication are regarded as the presence of corresponding members, and otherwise, the RFID member cards are regarded as the absence of the corresponding members; counting the number of people in the field and the number of people absent and sending the counted number to a human-computer interface after the roll call period is ended;

the human-computer interface is used for supporting human-computer interaction;

the specific process of the roll call device for authenticating any RFID member card based on symmetric encryption is as follows:

1) when the current member roll call arrivesAt this time, the management module of the roll call device takes out the ID of the corresponding member of the RFID member card from the member table and generates a random number r, and calculates the content C of the authentication request as EK (r | ID)_i) EK (-) denotes encryption algorithm, | is character string concatenation symbol, ID_iThe identity ID represents the member corresponding to the current RFID member card;

2) the management module of the roll call device controls the RFID module to send the authentication request content C;

3) after receiving the authentication request content C, the member card calculates a decryption authentication request content D (DK (C)), wherein DK (C) represents a decryption algorithm;

4) the control module of the member card extracts the ID and random number r of the member from the decryption authentication request content D, if the ID of the extracted member is equal to the ID stored in the member card, the member card generates the response authentication content A ═ EK (r | ID)_iII) and controlling the active RFID label to send response authentication content A, wherein E is a presence mark; otherwise, discarding the decryption authentication request content D;

5) the control module of the roll call device judges whether the response authentication content A is received when the next member roll call comes, if not, the authentication fails; if the decryption response authentication content B is received, calculating the decryption response authentication content B which is DK (A), extracting a random number r and an identity ID, if the random number r is valid and the identity ID of the member extracted from the decryption response authentication content B is equal to the identity ID of the member taken out from the member table, the authentication is passed, otherwise, the authentication is failed.

2. The system of claim 1, wherein the member table includes four types of parameters including member serial number, member name, member card ID, and member status, and the management module of the roll call device initiates authentication to the RFID member card in a roll call period according to the member serial number;

the roll call device is preset to be 0 by setting the number of people on site, the number of people absent, the number of people on site and the number of people absent through a human-computer interface.

3. The system of claim 1, wherein the roll call period is set in a range of 5 to 60 seconds.

4. The system of claim 1, wherein the active RFID tag has a range of 10 meters to 20 meters.

5. The system of claim 1, wherein the management module of the roll call machine issues an alert if the number of absent people is not 0 after the roll call cycle is over.

6. The system of claim 5, wherein the management module issues an alert to the human machine interface.

7. The system of claim 5, wherein the roll call machine further comprises an alarm module, the management module sending an alarm to the alarm module;

the alarm module alarms in a sound, light or vibration mode.