WO2010091560A1

WO2010091560A1 - Dual interface intelligent card and its communication method, and corresponding positioning system and method

Info

Publication number: WO2010091560A1
Application number: PCT/CN2009/071893
Authority: WO
Inventors: 杨军良; 钟卫; 蔡世宾; 朱健民
Original assignee: 上海赞润微电子科技有限公司
Priority date: 2009-02-11
Filing date: 2009-05-21
Publication date: 2010-08-19
Also published as: CN101483937A

Abstract

The invention discloses a dual interface intelligent card and its communication method, and corresponding positioning system and method. The invention adopts ZigBee wireless network node unit to make the intelligent card have the ability to organize network by self, and applying the card to different electronic devices enables fast combining mobile communications field with intelligent family field. The dual interface intelligent card comprises: a contact intelligent card unit for exchanging data with the electronic device by the mode of contact exchanging data; a ZigBee wireless network node unit for receiving or sending data based on ZigBee protocol; a storage unit; a micro processing unit for respectively electrically connecting with the contact intelligent card unit, the ZigBee wireless network node unit and the storage unit to manage and access these units, and maintain the data transfer among these units.

Description

Han interface smart card and its communication method, and corresponding positioning system and method. The application is submitted to the Chinese Patent Office on February 11, 2009, and the application number is 200910046070. X, the invention name is "dual interface smart card and its communication method, and The priority of the Chinese Patent Application for the corresponding locating system and method is incorporated herein by reference.

TECHNICAL FIELD The present invention relates to the field of integrated circuit card technologies, and in particular, to a dual interface smart card and a communication method thereof, and a corresponding positioning system and method. BACKGROUND OF THE INVENTION An integrated circuit (IC) card is an information tool that uses an integrated circuit packaged therein for data storage and processing. Since its birth, with the development of microelectronics technology, it has been increasingly favored by people for its advantages of small size, large storage capacity and good confidentiality. Today, it has been widely used in finance, transportation, social security, communications and other fields, which greatly facilitates people's lives: for example, bank credit cards, transportation cards used by public transportation systems, social security cards used in medical systems, and users used in mobile phones. Identification (SIM) card and more.

The development of IC cards has gone through the process from memory card to smart card, from contact IC card to non-contact IC card to dual interface IC card. The memory card only contains the memory chip, so that it only has the data storage function and no data processing capability; and the smart card integrates the microprocessor (MCU), the memory and the card internal operating system (COS) which is solidified in the read-only memory. It not only has the function of reading, writing and processing data, but also has the advantages of high security and offline operation. The contact IC card physically communicates with the card reader through the metal contacts on the surface of the card to complete communication and data exchange; the non-contact IC card communicates with the card reader by wireless communication without directly contacting the card reader Physical connection; dual interface IC card is an IC that supports both contact data exchange and contactless data exchange. card. Although the dual interface IC card has achieved a certain degree of development, it has achieved good application in many fields, but it is still far from meeting people's needs.

For example, as a SIM card for mobile phone user identification, it is often difficult to implement functions such as financial security mobile payment and indoor positioning. As a dual-interface smart card based on radio frequency identification (RFID) technology, it is difficult to implement smart cards such as information release and digital smart home. Features such as identification in the phone.

Therefore, how to provide a dual-interface smart card to realize the rapid integration of the mobile communication field with smart home, fire disaster reduction, information release, consumer entertainment or finance, and realize secure mobile payment, information release, medical monitoring, consumer entertainment, Small peer-to-peer databases and services such as positioning are extremely convenient for people's lives. Summary of the invention

The object of the present invention is to realize an ad hoc network between dual-interface smart cards, so as to realize rapid integration of mobile communication fields with smart homes, fire disaster reduction, information release, consumer entertainment or finance, thereby providing convenience for people's lives.

To achieve the above object, the present invention provides a dual interface smart card, which is applied to an electronic device, comprising: a contact smart card unit, and data exchange with an electronic device by means of contact data exchange; a ZigBee wireless network node unit, based on the ZigBee protocol Receiving or transmitting data; a storage unit providing a storage space for the user; a micro processing unit electrically connected to the contact smart card unit, the ZigBee wireless network node unit and the storage unit, respectively, to manage and access the above units, and maintain data Circulation between each of the above units.

Further, the contact smart card unit comprises: an electrically coupled encryption algorithm coprocessor and a true random number generator for performing the establishment and encryption processing.

The present invention further provides a dual interface smart card communication method, which utilizes a contact data exchange method to implement data exchange between a dual interface smart card and an electronic device, and the method utilizes a ZigBee wireless network to implement data exchange between dual interface smart cards.

Further, the method includes an initialization process, where the initialization process includes the following steps: configuring a listening interface of the dual interface smart card; and listening to the communication speed of the interface between the dual interface smart card and the electronic device Rate; When the desired communication rate value is obtained, it enters the wait state.

Further, the process of implementing data exchange between dual interface smart cards by using a ZigBee wireless network includes a data receiving process, including the following steps: searching for a ZigBee wireless network; checking a user identity when searching for a ZigBee wireless network; When confirming, join the searched ZigBee wireless network to receive data; store the received data in the storage unit of the dual interface smart card.

Further, the dual interface smart card communication method further includes: the storage unit of the dual interface smart card accepts access by the electronic device; and sends the data to the electronic device according to the protocol.

Further, the process of implementing data exchange between the dual interface smart card and the electronic device by using the contact data exchange method includes the following steps: receiving a read or write request of the electronic device; interpreting the read or write request; The request acquires corresponding data from the storage unit of the dual interface smart card, and sends the corresponding data to the electronic device; according to the write request, writes the corresponding data to the storage unit of the dual interface smart card.

The present invention further provides a positioning system, comprising: a plurality of reference nodes, each comprising a ZigBee wireless network node unit; and an unknown node, comprising a ZigBee wireless network node unit, wherein the unknown node passes through the Zi gBee wireless network node unit and the plurality of The ZigBee wireless network node unit of the reference node constructs a ZigBee network, obtains location information of the plurality of reference nodes, received signal strength, and connection quality information indicating the link, and obtains relative position information thereof; the information center, the signal is connected to And the reference node and the unknown node, and receiving location information of a certain reference node and relative location information of the unknown node, and realizing positioning of the unknown node according to the received information.

Further, the unknown node obtains its own relative position information by demodulating the position information of the plurality of reference nodes, the received signal strength, and the connection quality information indicating the link.

The present invention also provides a positioning method for realizing positioning of an unknown node in a system including a plurality of reference nodes and an unknown node, the method comprising: constructing a Zi gBee wireless network between the reference node and the unknown node; Obtaining location information and received signal strength of the multiple reference nodes And indicating the connection quality information of the link and calculating the relative position information of the unknown node; and locating the unknown node according to the location information of the reference node and the relative location information of the unknown node. The method for calculating the relative position information of the unknown node is a solution trigonometric function.

It can be seen that the dual interface smart card provided above utilizes the ZigBee wireless network node unit, so that the smart card has the function of self-organizing network, so that it can be applied to different electronic devices, thereby realizing mobile communication field and smart home, fire disaster reduction The rapid integration of information publishing, consumer entertainment or finance, thus providing convenience for people's lives. In addition, due to the presence of the contact smart card unit, the device equipped with the smart card has the capability of identity recognition and data security. The existence of the storage unit enables the device on which the smart card is installed to have the ability to store user data. Moreover, by further utilizing the above self-organizing network function, the positioning function can be realized in the fields of fire disaster reduction and the like. BRIEF DESCRIPTION OF THE DRAWINGS The objects, specific structural features and advantages of the invention will be further understood from the following description of the embodiments of the invention. among them,

1 is a structural block diagram of a dual interface smart card according to an embodiment of the present invention;

2 is a flowchart of an initialization work of a dual interface smart card according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a dual interface smart card received by a ZigBee wireless network node unit and inquired by an electronic device according to an embodiment of the present invention; work flow chart;

FIG. 4 is a flow chart showing the operation of storing user data into a storage unit by an electronic device according to an embodiment of the present invention;

FIG. 5 is a schematic block diagram of a positioning system according to an embodiment of the present invention; FIG.

FIG. 6 is a flowchart of a positioning method according to an embodiment of the present invention. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Referring to FIG. 1 , it is a structural block diagram of a dual interface smart card according to an embodiment of the present invention. As shown, the dual interface smart card (SC) 10 includes a contact smart card unit (SCU) 101, ZigBee A wireless network node unit (ZWG) 10 ² , a storage unit (SU ) 103 and a micro processing unit (MCU) 10 ⁴ . The contact smart card unit 101 exchanges data with the electronic device 20 in a contact data exchange manner; the ZigBee wireless network node unit 102 receives or transmits data based on the ZigBee protocol; the storage unit 103 provides a storage space for the user; and the micro processing unit 104 The signal is connected to the contact smart card unit 101, the ZigBee wireless network node unit 102, and the storage unit 103 to manage and access the contact smart card unit 101, the ZigBee wireless network node unit 102, and the storage unit 103, and maintain data between the units. Circulation. The header lines 1 through 6 in the figure show the flow of data within the dual interface smart card 10. As shown, arrow line 1 represents a data exchange path between the electronic device 20 and the dual interface smart card 10; arrow lines 5 and 6 together form a data exchange path between the microprocessor unit 104 and the contact smart card unit 101; The arrow lines 1 and 6 together form a data exchange path between the contact smart card unit 101 and the electronic device 20, wherein the arrow line 1 is often a bus conforming to the IS07816 standard in practical applications. Arrow line 3 represents the data exchange path between the microprocessor unit 104 and the memory unit 103; in practical applications, it is often a data bus to perform read and write operations on the memory unit 103 through the data bus. Arrow line 4 represents the data exchange path between the microprocessing unit 104 and the ZigBee wireless network node unit 102. In practical applications, it is often used by the microprocessing unit 104 to maintain the control bus of the ZigBee wireless network node unit 102 and receive or transmit via ZigBee. User data line of wireless network node unit 102.

In general, the microprocessor unit 104 is required to listen to the communication rate of the interface between the electronic device 20 and the dual interface smart card 10, i.e., the communication rate of the communication bus indicated by the arrow line 1, as indicated by the arrow line 2 in the figure.

In addition, the contact smart card unit 101 has a complete smart card function, which often includes an encryption algorithm coprocessor and a true random number generator, which are electrically connected to perform the establishment and encryption processing to complete the installation of the dual interface smart card 10 The electronic device itself is traditionally named and can be used as an identity recognition unit for a mobile phone or other electronic device having the same needs. In an embodiment, the ST21 YXX series of single interface smart card chips manufactured by STMicroelectronics can be used. The storage unit 103 is often a large-capacity solid-state storage unit, which can store system parameters of the electronic device on which the dual-interface smart card 10 is installed, and can provide a storage space for the user to save. Save the required files, in part to replace the function of the SD card. In one embodiment, Numonyx's NAND family of memory chips can be used. The micro processing unit 104 is a control center for the normal and safe operation of the dual interface smart card 10, which manages and accesses the contact smart card unit 101, the ZigBee wireless network node unit 102 and the storage unit 103, and maintains the circulation of data between these units. Specifically, the storage unit 103 manages, the ZigBee wireless network node unit 102 manages, accesses the contact smart card unit 101, position coordinate calculation, system maintenance, and the like. In an embodiment, the MCU STM32F103xx series manufactured by STMicroelectronics can be used. The Zi gBee wireless network node unit 102 has a complete ZigBee protocol, and mainly performs self-organization and maintenance based on the ZigBee network, and data exchange between nodes (Glid). The electronic device 20 can be a mobile terminal device (such as a mobile phone, a PDA, etc.), a household appliance, and the like.

In addition, an embodiment of the present invention further provides a dual interface smart card communication method, which uses a contact data exchange method to implement data exchange between a dual interface smart card and an electronic device, and implements a dual interface smart card by using a Z igBee wireless network. Data exchange. Since each Z igBee network node can not only be used as a monitoring object (for example, the sensor connected to it directly collects and monitors data), it can also automatically transfer data data transmitted by other network nodes. In addition, each Z igBee network node can also wirelessly connect with multiple isolated sub-nodes that do not undertake network information relay tasks within the scope of its own signal coverage. And ZigBee has large-scale networking capabilities, such as 60,000 nodes per network. Therefore, making full use of the self-organizing network and large-scale networking capabilities of the Z igBee network can realize the rapid integration of the mobile communication field with smart home, fire disaster reduction, information release, consumer entertainment or finance, which is extremely convenient for people's lives. .

Specifically, please refer to FIG. 1 and FIG. 2 to FIG. 4: FIG. 2 shows an initialization workflow of the dual interface smart card 10, and the process includes the following steps: After power-on, the initialization process starts; and then the micro processing unit (MCU) 104 configures the listening interface of the dual interface smart card 10 and listens to the communication speed of the interface between the dual interface smart card 10 and the electronic device 20; when the required communication rate value is obtained, the waiting state is entered, otherwise, the listening is continued. This initialization process is important to ensure that the microprocessing unit (MCU) 104, the electronic device 20, and the contact smart card unit (SCU) 101 communicate at a default rate. As shown in FIG. 3, the workflow of the dual interface smart card 10 being received by the ZigBee wireless network node unit 102 and the query by the electronic device 20 is shown. The flow includes the following steps: First, the micro processing unit (MCU) 104 configures Zi gBee. a wireless network node unit (ZWG) 102 and a storage unit (SU) 103; then, the Zi gBee wireless network node unit (ZWG) 102 searches for the Zi gBee wireless network; when the ZigBee wireless network is searched, the user identity is checked; Upon confirmation, the searched ZigBee wireless network is added to receive data; and then the received data is stored in the storage unit (SU) 103 of the dual interface smart card, and it enters a state of waiting for the electronic device 20 to query. If the electronic device 20 needs to read data in the storage unit (SU) 103, the data is sent to the electronic device in accordance with the protocol.

As shown in FIG. 4, a workflow for storing user data into a storage unit (SU) 103 by the electronic device 20 is illustrated. The flow includes the following steps: a contact smart card unit (SCU) 101 receives a read or write request of the electronic device; The micro processing unit (MCU) 104 interprets the read or write request; then, the micro processing unit (MCU) 104 acquires corresponding data from the storage unit (SU) 103 of the dual interface smart card according to the read read request, and sends the corresponding data to the electronic The device 20; and writes the corresponding data to the storage unit (SU) 103 of the dual interface smart card according to the interpreted write request.

Applying the dual interface smart card or communication method provided by the above embodiments to various fields of life, such as communication, smart home, fire disaster reduction, information release, consumer entertainment or finance, can realize secure mobile payment, information release, Medical monitoring, consumer entertainment, small peer-to-peer databases and location services. Examples are as follows:

Embodiment 1 is implemented in mobile secure payment:

Applying the dual interface smart card provided in the above embodiment to the mobile phone (for example, in the SIM card holder of the mobile phone), the phone can have the functions of paying transportation expenses, retail goods cost, bridge fee, etc., and at the same time, due to Zi The gBee network provides a three-level security model that includes no security settings, the use of access control lists (ACLs) to prevent illegal access to data, and symmetric passwords using the Advanced Encryption Standard (AES 128) for high security.

Embodiment 2: Application implementation in a smart digital home:

The dual interface smart card provided by the above embodiment is implanted into a household appliance, lighting, door lock, electric In a household facility such as a curtain, it is possible to complete the interconnection with the mobile phone in the first embodiment, thereby constructing a control network, realizing the function of controlling the mobile phone to home appliances such as home appliances, and facilitating people's lives.

Embodiment 3, application implementation in information release

The user who holds the mobile phone provided in the first embodiment arrives at a new place, such as a subway station, wants to eat, and opens the information receiving function of the mobile phone, so that information released by nearby merchants can be obtained, and the information of the hotel can be searched for, for example. , specialties, prices, specific driving directions, etc.

Embodiment 4, application implementation in consumer entertainment:

Many users who hold the mobile phone provided in the first embodiment use ZigBee's self-organizing network technology to conduct interactive games at any place and at any time, such as online games such as playing mahjong and park.

Embodiment 5: Application in medical monitoring:

The mobile phone provided in the first embodiment is used as a central control terminal of the personal network [PAN] to realize information monitoring of various medical devices [with Z i gBee network nodes].

Embodiment 6: Application in fire disaster reduction:

To achieve the application in this field, there are two conditions: The first condition is to have various fire sensors (such as smoke, infrared, temperature, etc.) with ZigBee function installed, and the position of these sensors themselves. The second condition is a walkie-talkie with a dual-interface smart card provided by the above embodiment, which is often held by a firefighter, for example, the mobile phone provided in the first embodiment. In this way, when the above-mentioned fire-fighting sensor is installed in a high-rise building, the fire command center can obtain the position information of the firefighter holding the walkie-talkie and the trapped person holding the mobile phone provided in the first embodiment in time when the fire occurs. In order to provide firefighters with timely information on the correct location of firefighting and rescue of trapped people.

Of course, this is only a very effective application of the location service. The invention is not limited to the positioning application in the disaster prevention and mitigation, and can also be used in other positioning fields.

The positioning system and positioning method obtained by using the essence of the present invention are detailed below. Please refer to FIG. 5 , which is a schematic block diagram of a positioning system according to an embodiment of the present invention. As shown in the figure, the system includes a plurality of reference nodes (here, nine are exemplified by reference numerals 1 to 9, respectively), and these reference nodes include The ZigBee wireless network node unit further includes at least one unknown node U, which often includes the dual interface smart card 10 described above, that is, includes a ZigBee wireless network node unit (ZWG) 102, such that the unknown node U passes its Zi gBee The wireless network node unit (ZWG) 102 and the Z igBee wireless network node unit of the plurality of reference nodes 1_9 construct a ZigBee wireless network, and acquire location information (X1, Y1) _ (X9, Y9) of the plurality of reference nodes 1-9. And receiving the signal strength RSSI and the connection quality LSI information indicating the link, and obtaining its own relative position information (x, y); the information center C, the signal is connected to the reference node 1-9 and the unknown node U, and receiving a certain Position information of the reference node (for example, reference node 5) and relative position information (x, y) of the unknown node U, and realizing positioning of the unknown node according to the received information, that is, acquiring location information of the unknown node U (X,Y). In general, the unknown node U is the location information (XI, Y1)_(Χ9, Υ9) of the plurality of reference nodes by the micro processing unit (MCU) 104, the received signal strength RSS I, and the connection quality LSI information indicating the link. Perform a trigonometric function to obtain its own relative position information (x, y).

Correspondingly, the present invention further provides a positioning method, which is applied to the above system, and implements positioning of the unknown node U. As shown in FIG. 6, the method includes the following steps:

S1: constructing a ZigBee wireless network between the reference node and the unknown node;

S2: acquiring location information of multiple reference nodes, receiving signal strength, and connection quality information indicating the link, and calculating relative location information of the unknown node;

S3: Locating an unknown node according to location information of a certain reference node and relative location information of the unknown node.

Generally, the method of calculating the relative position information of the unknown node is a trigonometric function. In summary, the dual interface smart card provided by the above embodiment utilizes the Zi gBee wireless network node unit, so that the smart card has the function of an ad hoc network, so that it can be applied to different electronic devices, thereby realizing the field of mobile communication. Quickly integrate with smart homes, fire disaster mitigation, information release, consumer entertainment or finance to make life easier for people. In addition, due to the presence of the contact smart card unit, the device in which the smart card is installed has the capability of identity recognition and data security. The existence of the storage unit enables the device on which the smart card is installed to have the ability to store user data. And by further utilizing the above self-organizing network functions, it can be implemented in the fields of fire disaster reduction and other fields. Bit function.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Claim

A dual-interface smart card, which is applied to an electronic device, and includes: a contact smart card unit that exchanges data with the electronic device in a contact data exchange manner;

a Zi gBee wireless network node unit that receives or transmits data based on the Zi gBee protocol;

a storage unit that provides storage space for the user;

The micro processing unit is electrically connected to the contact smart card unit, the ZigBee wireless network node unit and the storage unit, respectively, to manage and access the above units, and maintain data communication between each of the above units.

2. The dual interface smart card of claim 1, wherein the contact smart card unit comprises an electrically coupled encryption algorithm coprocessor and a true random number generator for performing security and encryption processing.

A dual interface smart card communication method, which utilizes a contact data exchange method to implement data exchange between a dual interface smart card and an electronic device, wherein the method uses a Zi gBee wireless network to implement data between dual interface smart cards. exchange.

4. The dual interface smart card communication method according to claim 3, wherein the method comprises an initialization process, the process comprising the following steps:

Configure the listening interface of the dual interface smart card.

Listening to the communication speed of the interface between the dual interface smart card and the electronic device;

When the desired communication rate value is obtained, it enters a wait state.

The dual interface smart card communication method according to claim 3, wherein the process of implementing data exchange between the dual interface smart cards by using the ZigBee wireless network comprises a data receiving process, which comprises the following steps:

Search ZigBee wireless network;

When the ZigBee wireless network is searched, the user identity is checked;

When the user identity is confirmed, the searched ZigBee wireless network is added to receive data; the received data is stored in the storage unit of the dual interface smart card.

The dual interface smart card communication method according to claim 5, further comprising: The storage unit of the dual interface smart card accepts access by the electronic device;

Send data to the electronic device according to the agreement.

The dual interface smart card communication method according to claim 3, wherein the process of data exchange between the dual interface smart card and the electronic device by using the contact data exchange method comprises the following steps:

Receiving a read or write request from an electronic device;

Interpreting the read or write request;

Obtaining corresponding data from the storage unit of the dual interface smart card according to the read request, and sending the data to the electronic device;

According to the write request, the corresponding data is written into the storage unit of the dual interface smart card.

8. A positioning system, comprising:

a plurality of reference nodes, each including a Zi gBee wireless network node unit;

An unknown node, including a ZigBee wireless network node unit, wherein the unknown node constructs a ZigBee network through the ZigBee wireless network node unit and the Zi gBee wireless network node unit of the multiple reference nodes, and acquires location information of the multiple reference nodes, Receiving signal strength and indicating connection quality information of the link, and obtaining relative position information of itself;

The information center is connected to the reference node and the unknown node, and receives location information of a certain reference node and relative location information of the unknown node, and implements positioning of the unknown node according to the received information.

The positioning system according to claim 8, wherein the unknown node obtains a trigonometric function for obtaining position information, received signal strength, and connection quality information of the plurality of reference nodes. Relative location information.

A positioning method for realizing positioning of an unknown node in a system including a plurality of reference nodes and an unknown node, the feature comprising:

Constructing a Z i gBe e wireless network between the reference node and the unknown node;

Obtaining location information of the multiple reference nodes, receiving signal strength, and connection quality information indicating the link, and calculating relative location information of the unknown node; Locating an unknown node according to location information of a certain reference node and relative location information of the unknown node;

The method for calculating the relative position information of the unknown node is a solution trigonometric function.