WO2024007777A1

WO2024007777A1 - Card reader, card end device, card swiping method and control unit

Info

Publication number: WO2024007777A1
Application number: PCT/CN2023/097619
Authority: WO
Inventors: 王大耀
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2022-07-05
Filing date: 2023-05-31
Publication date: 2024-01-11
Also published as: CN115130485A

Abstract

The present application provides a card reader, a card end device, a card swiping method and a control unit. The card reader comprises a Bluetooth module, an ultra wide band (UWB) ranging module and a control unit, wherein the Bluetooth module is used for enabling the ultra wide band ranging module when a card end device, which supports an ultra wide band card swiping function, is scanned; the ultra wide band ranging module is used for measuring a first distance between same and the card end device; and the control unit is used for performing card-swiping communication with the card end device by means of the ultra wide band ranging module when it is determined, according to the first distance, that the card end device is in a proximity state and the first distance is less than or equal to a first threshold value. The present application provides a card reader which supports a UWB card swiping function, thereby improving the convenience and flexibility of card swiping by a user, and realizing non-inductive card swiping.

Description

Card reader, card terminal equipment, card swiping method and control unit

This application requires the priority of the Chinese patent application submitted to the China Patent Office on July 5, 2022, with the application number 202210783663. The contents are incorporated into this application by reference.

Technical field

The present application relates to the field of communication technology, and in particular to a card reader, card terminal equipment, card swiping method and control unit.

Background technique

NFC (Near Field Communication) technology combined with the card swiping architecture implemented by SE (Secure Element security unit) is widely used in card swiping systems such as bus access control systems and bank card swiping systems. It has higher security than manual card swiping methods. , the flexibility is also higher.

However, although the card swiping architecture of NFC combined with SE enables contactless card swiping, it still requires users to lift their watches, bracelets and other card-side devices to get close to the card reader to complete the card swiping operation. The convenience and flexibility of card swiping are relatively low. Poor and unable to meet user needs.

Contents of the invention

This application provides a card reader, card terminal equipment, card swiping method and control unit, which realizes UWB-based senseless card swiping and improves the convenience and flexibility of card swiping operations.

In a first aspect, this application provides a card reader, including: a Bluetooth module, an Ultra Wide Band (UWB) ranging module and a control unit; wherein, the Bluetooth module is used to support the Ultra Wideband card swiping function when scanning When the card-side device is connected to the card-side device, the ultra-wideband ranging module is enabled; the ultra-wideband ranging module is used to detect the first distance to the card-side device; and the control unit is used to detect the first distance according to the first distance. When it is determined that the card-side device is in a close state and the first distance is less than or equal to the first threshold, card-swiping communication is performed with the card-side device through the ultra-wideband ranging module.

In a possible implementation, the Bluetooth module is a low-power Bluetooth module, and is also used to determine the third distance to each card-side device. The control unit is specifically configured to: sort each of the card-side devices in order from small to large in the third distance; according to the sorting result, order Obtain the first distance of each card-side device, and when it is determined that the card-side device is in a close state according to the first distance and the first distance is less than or equal to a first threshold, the ultra-wideband ranging module , perform card swiping communication with the card terminal device.

In a possible implementation, the card reader further includes a near field communication module, and the card terminal device also supports the near field communication card swiping function; the control unit is also used to: when the card swiping function is based on the ultra-wideband ranging module When the operation fails and the first distance is less than the second threshold, the ultra-wideband ranging module is prohibited from performing card swiping communication with the card terminal device, and uses the near field communication module to perform card swiping communication with the card terminal device. Communication; wherein the second threshold is less than the first threshold.

In a possible implementation, the control unit is also configured to: after the card swiping operation of the card terminal device is successful, generate an opening instruction of the gate or the access control system to open the gate or the access control system. ; Acquire the second distance between the ultra-wideband ranging module and the card-side device detected by the gate or the access control system after the gate or the access control system is turned on; when it is determined that the card-side device is leaving based on the second distance In this state, card swipe communication with the card-side device is prohibited.

In a possible implementation, the number of the ultra-wideband ranging modules is multiple, and the distance between each of the ultra-wideband ranging modules is at least a preset distance; the control unit is specifically configured to: The distance to the card-side device detected by multiple ultra-wideband ranging modules is used to determine the spatial position of the card-side device; and the motion state of the card-side device is determined based on the spatial position within a preset time period, Wherein, the movement state includes approaching state and/or leaving state.

In a possible implementation, the control unit is further configured to: before performing card swipe communication with the card terminal device, use the Bluetooth module or ultra-wideband ranging module to The type is sent to the card-side device; where the application type is used to characterize the type of card or simulated card that is supported or used.

In a possible implementation, the Bluetooth module is specifically configured to: when a card-side device supporting ultra-wideband card swiping function is scanned, initiate a connection to the card-side device; after the connection is successful, connect to the card-side device The device performs parameter interaction to obtain the negotiation parameters of the ultra-wideband ranging module; and enables the ultra-wideband ranging module to measure distance based on the negotiation parameters.

In a possible implementation, the low-power Bluetooth module is also used to determine a third distance to each card-side device.

Correspondingly, the control unit is specifically configured to: according to the first distance of each card-side device whose third distance is less than the third threshold, communicate with the third distance through the ultra-wideband ranging module or the near field communication module. Each card terminal device whose distance is less than the third threshold carries out card swiping communication to complete the card swiping operation.

In a second aspect, this application provides a card-side device, including: a card-side Bluetooth module and a card-side ultra-wideband ranging module; the card-side Bluetooth module is used to broadcast the card swiping function supported by the card-side device, and is used to communicate with the card-side device. After the Bluetooth module of the card reader is connected, the card-side ultra-wideband ranging module is enabled. The card-side card swiping function supported by the card-side device includes the ultra-wideband card swiping function; the card-side ultra-wideband ranging module is used to communicate with the reader. The ultra-wideband ranging module of the card reader communicates to realize the measurement of the distance between the card terminal device and the card reader and the ultra-wideband card swiping function.

In a possible implementation, the card swiping function supported by the card terminal device also includes a near field communication card swiping function, and the card terminal device also includes a card terminal near field communication module for communicating with the near field communication module of the card reader. Communication to achieve near field communication card swiping function.

In a possible implementation, the card-side device also includes an application type switching module, configured to: receive the application type of the card reader; and, according to the application type of the card reader, switch the currently used application type to match the card reader. The application type of the device is the same.

In a possible implementation, the card-side device further includes a card-side security unit to complete the card swiping operation by accessing the card-side security unit; the card-side security unit is also used to: when the card swiping function is switched, Activate or deactivate the card swiping application in the card-side security unit to restore the status of the card swiping application and provide required data for the switched card swiping function, wherein the card swiping function includes near field communication card swiping function and ultra-wideband For the card swiping function, under the near field communication card swiping function, the card swiping operation is performed based on the card end near field communication module. Under the ultra-wideband card swiping function, the card swiping operation is performed based on the card end ultra-wideband ranging module.

In a third aspect, this application provides a card swiping method. The method is applied to a card reader. The card reader includes a Bluetooth module, an ultra-wideband ranging module and a control unit, and can be executed by the control unit. The method includes: When the Bluetooth module scans a card-side device that supports the ultra-wideband card swiping function, the ultra-wideband ranging module is enabled; based on the ultra-wideband ranging module, the first distance to the card-side device is detected; when When it is determined that the card-side device is in a close state according to the first distance, and the first distance is less than or equal to a first threshold, card-swiping communication is performed with the card-side device through the ultra-wideband ranging module.

Optionally, the Bluetooth module is a Bluetooth Low Energy (BLE) module. Before detecting the first distance to the card terminal device based on the ultra-wideband ranging module, the method further includes : Based on the low-power Bluetooth module, determine the third distance to each card-side device;

Sort each of the card-side devices in ascending order of the third distance; when it is determined that the card-side device is in a close state according to the first distance, and the first distance is less than or equal to the third distance, When a threshold is reached, the ultra-wideband ranging module is used to communicate with the card terminal device by card swiping, including: obtaining the first distance of each card terminal device in sequence according to the sorting result, and determining the first distance according to the first distance. When the card-side device is in a close state and the first distance is less than or equal to the first threshold, card-swiping communication is performed with the card-side device through the ultra-wideband ranging module.

Optionally, the card reader also includes a near field communication module, and the card terminal device also supports a near field communication card swiping function. The method further includes: when the card swiping operation based on the ultra-wideband ranging module fails and the first distance is less than At the second threshold, the ultra-wideband ranging module is prohibited from performing card swiping communication with the card terminal device, and uses the near field communication module to perform card swiping communication with the card terminal device; wherein the second threshold is less than the first threshold.

Optionally, the method further includes: when the card terminal device swipes the card successfully, generating an opening instruction for the gate or the access control system to open the gate or the access control system; and obtaining the ultra-wideband ranging After the gate or the access control system is opened, the module detects the second distance from the card-side device; when it is determined that the card-side device is in the away state based on the second distance, the module is prohibited from communicating with the card-side device. The terminal device performs card swiping communication.

Optionally, the number of the ultra-wideband ranging modules is multiple, and the distance between each of the ultra-wideband ranging modules is at least a preset distance; the method further includes: detecting based on the multiple ultra-wideband ranging modules The distance from the card-end device to determine the spatial position of the card-end device; according to the spatial position within a preset time period, determine the motion state of the card-end device, wherein the motion state includes close proximity status and/or away status.

Optionally, the method further includes: before performing card swiping communication with the card terminal device, sending the application type of the card reader to the card terminal device through the Bluetooth module or ultra-wideband ranging module. , to switch the application type of the card-side device; where the application type is used to characterize the type of card or simulated card that is supported or used.

Optionally, when the Bluetooth module scans a card-side device that supports the ultra-wideband card swiping function, enabling the ultra-wideband ranging module includes: when the Bluetooth module scans a card-side device that supports the ultra-wideband card swiping function. time, initiate a connection to the card-side device; after the connection is successful, perform parameter interaction with the card-side device to obtain the negotiation parameters of the ultra-wideband ranging module; enable the ultra-wideband ranging module to The negotiation parameters measure distance.

In the fourth aspect, this application provides another card swiping method, which is applied to a card-side device. The card-side device includes a card-side Bluetooth module and a card-side ultra-wideband ranging module; the method includes: based on the card-side Bluetooth module , broadcasting the card swiping function supported by the card terminal device, wherein the card swiping function supported by the card terminal device includes the ultra-wideband card swiping function; after the card-side Bluetooth module is connected to the Bluetooth module of the card reader, the card-side ultra-wideband is enabled Ranging module; communicates with the card-end ultra-wideband ranging module and the ultra-wideband ranging module of the card reader to realize the measurement of the distance between the card-end device and the card reader and the ultra-wideband card swiping function .

Optionally, the card swiping function supported by the card terminal device also includes a near field communication card swiping function. The card terminal device further includes a card terminal near field communication module. The method further includes: when the field strength is detected, The terminal near field communication module communicates with the near field communication module of the card reader to realize the near field communication card swiping function.

Optionally, the method further includes: obtaining the application type of the card reader; and switching the currently used application type according to the application type of the card reader to be consistent with the application type of the card reader.

Optionally, the card terminal device further includes a card terminal security unit to complete the card swiping operation by accessing the card terminal security unit; the method further includes: activating or deactivating the card terminal security unit when the card swiping function is switched. The card swiping application in the card swiping application is used to restore the state of the card swiping application to provide required data for the switched card swiping function, where the card swiping function includes a near field communication card swiping function and an ultra-wideband card swiping function.

In a fifth aspect, this application provides a control unit including a memory and at least one processor;

The memory stores computer-executed instructions; the at least one processor executes the computer-executed instructions stored in the memory, so that the at least one processor executes the card swiping method provided in the third or fourth aspect of this application.

In a sixth aspect, the present application provides a computer-readable storage medium. Computer-executable instructions are stored in the computer-readable storage medium. When the processor executes the computer-executable instructions, the third or fourth aspect of the present application is implemented. The card swiping method provided by the aspect.

In a seventh aspect, the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, the card swiping method as provided in the third or fourth aspect of the present application is implemented.

Embodiments of the present application provide a card reader, a card terminal device, a card swiping method and a control unit. The card reader includes a Bluetooth module, an ultra-wideband ranging module and a control unit. The Bluetooth module is configured to support the ultra-wideband card swiping function when scanning. When using the card-side device, enable the ultra-wideband ranging module. Based on the ultra-wideband measurement The distance module measures the first distance from the card-side device. When it is determined that the card-side device is in a close state based on the first distance and the first distance is less than or equal to the first threshold, the card-side device is swiped through the ultra-wideband ranging module. communication, thereby realizing UWB senseless card swiping. The ultra-wideband ranging module is awakened through the Bluetooth module, which reduces power consumption. Through the precise distance measured by the ultra-wideband ranging module, it can intelligently determine whether to trigger the UWB card swiping operation, thereby realizing the card swiping operation with the card-side device. The entire process does not require the user. Manual card swiping-related operations improve the convenience and flexibility of card swiping and realize senseless card swiping.

Description of the drawings

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a schematic diagram of the card swiping operation process based on NFC;

Figure 2 is a schematic structural diagram of Embodiment 1 of the card reader provided by the embodiment of the present application;

Figure 3 is a schematic structural diagram of Embodiment 2 of the card reader provided by the embodiment of this application;

Figure 4 is a schematic structural diagram of Embodiment 1 of the card terminal device provided by the embodiment of the present application;

Figure 5 is a schematic structural diagram of Embodiment 1 of the card swiping system provided by the embodiment of this application;

Figure 6 is a schematic flow chart of Embodiment 1 of the card swiping method provided by the embodiment of this application;

Figure 7 is a schematic flow chart of Embodiment 2 of the card swiping method provided by the embodiment of this application;

FIG. 8 is a schematic structural diagram of Embodiment 1 of the control unit provided by the embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

With the continuous development of Internet of Things technology, NFC technology has been widely used in order to improve the convenience of card swiping operations, such as card swiping payment operations and card swiping to unlock access control. Figure 1 shows brushing based on NFC A schematic diagram of the card operation process, as shown in Figure 1. When the card terminal device 10 (a wearable device is used as an example in Figure 1) needs to pay by swiping a card or open access control by swiping a card, the user needs to bring the card terminal device 10 close to the card reader 20 , to conduct contactless data transmission through the NFC module, thereby realizing the exchange of relevant data to complete the corresponding card swiping operation. Taking the access control system as an example, the NFC module in the card reader 20 acts as a card reader to read the tag information stored in the NFC module in the card terminal device 10, thereby opening the access control based on the tag information.

In one embodiment, the card-side device can be a portable or mobile device such as a mobile phone or tablet computer, or a wearable device such as a bracelet, watch, smart glasses, smart jewelry, or other device with SE that can implement the card function. .

In one embodiment, the card reader may be a card reader in an access control system, a bus card swiping system, a bank card swiping system, or other systems. In Figure 1, the card reader is a card reader at a subway gate as an example.

Although NFC technology can be used to realize the card swiping function at close range, it still requires manual operation by the user, such as lifting the card-side device 10 such as a watch or bracelet, so as to bring the card-side device 10 close to the card reader 20, making card swiping less convenient.

In order to improve the convenience of card swiping and achieve senseless card swiping, this application provides a card reader that supports UWB card swiping. Since the UWB module consumes high power, in order to reduce power consumption, a Bluetooth module is added. The Bluetooth module detects When a card-side device supports the UWB card swiping function, wake up the UWB module and detect the precise distance between the card reader and the card-side device based on the UWB module. Based on the detected distance, it automatically determines whether the status of the card-side device meets the preset card swiping requirements. Condition, if yes, based on the UWB module, sensorless card swiping will be realized.

The technical solution of the present application will be described in detail below with specific examples. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

Figure 2 is a structural diagram of Embodiment 1 of a card reader provided by the embodiment of the present application. The card reader is applied to a payment system or an access control system. The payment system can be a bus payment system, a subway payment system, a bank card payment system, etc. As shown in FIG. 2 , the card reader 20 includes a Bluetooth module 210 , an ultra-wideband ranging module 220 and a control unit 240 .

Among them, the Bluetooth module 210 is used to enable the ultra-wideband ranging module 220 when a card-side device that supports the ultra-wideband card swiping function is scanned; the ultra-wideband ranging module 220 is used to detect the first distance to the card-side device; the control unit 240 is used when it is determined based on the first distance that the card-side device is in a close state, and the third When a distance is less than or equal to the first threshold, card swiping communication is performed with the card terminal device through the ultra-wideband ranging module 220 to realize UWB sensorless card swiping.

Since the Bluetooth module 210 has low power consumption, it is used as a scanning device to scan the broadcast data of the card-side device. When the Bluetooth module 210 scans that the card-side device supports the UWB card swiping function, the ultra-wideband ranging module is enabled (or awakened). 220, such as sending an enable signal to the ultra-wideband ranging module 220, thereby preventing the ultra-wideband ranging module 220 from remaining turned on for scanning, resulting in high power consumption.

After the ultra-wideband ranging module 220 is enabled, the ranging mode is turned on to detect the distance to peripheral devices (including the card-side device).

For example, the bandwidth of the ultra-wideband ranging module 220 may be between 1000 and 7000 MHz, such as 3000 MHz.

When the Bluetooth module 210 scans a card-side device that supports the UWB card swiping function, it enables the card-side ultra-wideband ranging module 220 of the card reader, and the card-side Bluetooth module of the card-side device enables the card-side ultra-wideband of the card-side device. The ranging module, based on the ultra-wideband ranging module 220 and the card-end ultra-wideband ranging module of the card-end device, detects the distance between the card reader and the card end, which is recorded as the first distance.

In one embodiment, when the Bluetooth module 210 scans a card-side device that supports the UWB card swiping function, it initiates a connection to the card-side device to interact with relevant parameters of the ultra-wideband ranging module 220 so that the ultra-wideband ranging module 220 performs ranging based on the interacted parameters.

The ultra-wideband ranging module 220 can perform ranging based on algorithms such as DS-TWR (Double Sided Two-way Ranging), TOA (Time of Arrival), and TDOA (Time Difference of Arrival). .

The first threshold may be 1m, 2m, 3m, 5m or other values. In the approaching state, the card-side device gradually approaches the card reader 20 , that is, in the approaching state, the first distance between the card-side device and the card reader gradually decreases.

Specifically, whether the card-side device is in a close state can be determined based on the first distance between the card-side device and the card reader 20 detected within a continuous set period of time.

For example, whether the card-side device is in a close state can be determined based on parameters such as the first distance detected within a continuous set time period, the difference between adjacent first distances, and so on.

The card reader provided in this embodiment includes a Bluetooth module 210, an ultra-wideband ranging module 220, and a control unit 240. The Bluetooth module 210 is configured to enable ultra-wideband measurement when a card terminal device that supports the ultra-wideband card swiping function is scanned. distance module 220, based on the ultra-wideband ranging module 220 measurement and card terminal equipment When it is determined based on the first distance that the card-side device is in a close state and the first distance is less than or equal to the first threshold, card-swiping communication is performed with the card-side device through the ultra-wideband ranging module 220, thereby realizing UWB No need to swipe your card. The ultra-wideband ranging module 220 is awakened through the Bluetooth module 210, which reduces power consumption. Through the precise distance measured by the ultra-wideband ranging module 220, it is intelligently determined whether to trigger the UWB card swiping operation, thereby realizing the card swiping operation with the card-side device. The entire The process does not require users to manually perform card swiping related operations, which improves the convenience and flexibility of card swiping and realizes senseless card swiping.

In one embodiment, a card terminal device that supports ultra-wideband card swiping function can be called a default card terminal device.

Optionally, the Bluetooth module 210 is specifically used to: when a card-side device supporting the ultra-wideband card swiping function is scanned, initiate a connection to the card-side device; after the connection is successful, perform parameter interaction with the card-side device to Obtain the negotiation parameters of the ultra-wideband ranging module 220; enable the ultra-wideband ranging module 220 to measure distance based on the negotiation parameters.

Among them, the negotiation parameters include parameters such as the ranging interval and the ranging method of the ultra-wideband ranging module 220 .

Specifically, the Bluetooth module 210 initiates a connection to the card-side Bluetooth module of the card-side device, and interacts with the card-side Bluetooth module of the card-side device for UWB related parameters, thereby obtaining the negotiation parameters of the ultra-wideband ranging module 220 . After the connection is successful, the ultra-wideband ranging module 220 of the card reader is enabled or awakened. After being enabled, the ultra-wideband ranging module 220 enters the ranging mode based on the negotiation parameters, thereby using the card-side ultra-wideband ranging module of the card-side device. The broadband ranging module realizes the detection of the distance between the card reader and the card-side device.

The process of parameter interaction between the Bluetooth module 210 and the card device is as follows:

Obtain the mac (Message Authentication Code, message authentication code) value sent by the card-side device and the first parameter; generate the mac value of the card reader based on the shared key and the first parameter; determine the mac value of the card-side device and the card reader Is the mac value consistent? If yes, the verification is successful and the negotiation parameters are the UWB parameters originally stored by the card device, that is, the first parameter mentioned above; if not, enter the parameter negotiation process to negotiate UWB related parameters. After the parameter negotiation is successful, , get the above negotiation parameters. The card-side device saves the negotiation parameters and backs up the original first parameter.

Among them, the mac value of the card-side device is calculated based on the message authentication code algorithm and the shared key and the first parameter.

When the mac value of the card-side device is inconsistent with the mac value of the card reader, the card reader can also search for the UWB parameter whose mac value matches the mac value of the card-side device from the existing UWB parameters as the above-mentioned first parameter. If no UWB parameter with the same mac value is found, that is, there is a mac with UWB parameters. If the values are inconsistent with the mac value of the card-side device, the parameter negotiation process will be entered.

The Bluetooth module 210 follows the relevant specifications of the FiRa (Fine Ranging) Alliance during the parameter interaction process.

Based on the Bluetooth module 210, the parameters of the ultra-wideband ranging module 220 are negotiated, which improves the reliability and security of parameter interaction and reduces power consumption compared with parameter negotiation based on UWB.

It should be noted that the card reader may not include the Bluetooth module 210 and directly use the ultra-wideband ranging module 220 to perform operations such as scanning and UWB communication parameter negotiation. Correspondingly, the card-side device may not include a Bluetooth module and directly use the ultra-wideband ranging module to broadcast the supported card swiping functions and parameter negotiation, but the power consumption may be relatively large at this time.

Figure 3 is a structural diagram of Embodiment 2 of the card reader provided by the embodiment of the present application. As shown in combination with Figures 2 and 3, the card reader also includes a near field communication module 230.

The near field communication module 230 is used to read application information stored in the card terminal device based on near field communication technology to implement the NFC card swiping function. Among them, the application information includes information related to credit card transactions.

Specifically, the control unit 240 can determine whether the card-side device meets the conditions corresponding to the UWB card swiping function based on the received first distance between the card reader 20 and the card-side device, such as whether the first distance is within a preset interval. If so, then Based on the ultra-wideband ranging module 220, the card-end ultra-wideband ranging module communicates with the card-side ultra-wideband ranging module of the card-end device to complete the UWB card swiping operation, thereby realizing senseless card swiping. When the card-side device does not meet the conditions corresponding to the UWB card swiping function, or the card swiping operation based on the ultra-wideband ranging module 220 fails, it is determined based on the first distance whether the conditions corresponding to the NFC card swiping function are met, such as whether the first distance is small enough. , if so, based on the near field communication module 230, the card terminal near field communication module of the card terminal device performs card swiping communication to complete the NFC card swiping operation, thereby improving the success rate of card swiping and preventing the user from manually swiping the card.

Among them, the card swiping operation can be an operation corresponding to swiping a card to pay or an operation corresponding to swiping a card to open an access control.

For card terminal devices that support both the ultra-wideband card swiping function and the near field communication card swiping function, the control unit 240 is also configured to: when the card swiping operation based on the ultra-wideband ranging module 220 fails and the first distance is less than the second threshold, The ultra-wideband ranging module 220 is prohibited from performing card swiping communication with the card terminal device, and uses the near field communication module 230 to perform card swiping communication with the card terminal device. Wherein, the second threshold is smaller than the first threshold.

For example, the second threshold can be 20cm, 10cm, 5cm or other values, such as 15cm.

Continuing to refer to Figure 3, when the card reader 20 is used in a card payment system, the card reader 20 also includes a security element (Secure Element, SE) 250 to improve the security of card payment.

The security unit 250 is also called a security chip or security element, including security hardware and security software, and is used to provide a secure interaction mechanism to ensure the security of transaction data interaction between the card reader 20 and the card-side device. The security unit can perform operations such as secure storage and secure calculation of payment data, thereby avoiding the problem of data leakage caused by direct interaction of payment data through the ultra-wideband ranging module 220 or the near field communication module 230 .

When a card swiping operation is performed, the ultra-wideband ranging module 220 or the near field communication module 230 can complete the corresponding card swiping operation by accessing the security unit 250 .

The security unit 250 in the card reader 20 is usually an eSE (Embedded Security Element).

The control unit 240 is also used to send the application type of the card reader 20 to the card terminal device through the Bluetooth module 210 or the ultra-wideband ranging module 220 before performing card swiping communication with the card terminal device.

The application type is used to characterize the type of card or simulated card that is supported or used, and can be used to characterize the type of card supported by the card reader 20 , or to characterize the type of card or simulated card currently used by the card terminal device. The application type of the card terminal device and the card reader 20 is consistent, that is, the card or simulated card currently used by the card terminal device is consistent or the same as the card type supported by the card reader 20 .

In one embodiment, the control unit 240 is specifically configured to: when it is determined that the card-side device is in a close state according to the first distance, send the application type of the security unit 250 to the card-side device so that the card-side device The application types of the card-side device and the card reader 20 are consistent; when it is determined that the application types of the card-side device and the card reader 20 are consistent, if the first distance between the card-side device and the card reader 20 is less than the first threshold, then the The ultra-wideband ranging module 220 performs card swiping communication with the card terminal device to complete subsequent card swiping operations through the access security unit 250; if they are inconsistent, the card terminal device automatically switches the application type to be consistent with the application type of the card reader. type.

In one embodiment, the application type of the security unit 250 can be sent to the card terminal device through the Bluetooth module 210 or the ultra-wideband ranging module 220 .

After receiving the application type of the security unit 250 of the card reader 20, the card-side device determines whether the application type currently used or run by the card-side security unit of the card-side device is consistent with the application type of the security unit 250. If not, it automatically Switch the application type currently used or run by the card-side security unit of the card-side device to a type consistent with the application type of the security unit 250 .

After the application types are consistent, the control unit 240 determines whether the first distance is less than the first threshold, such as whether it changes from greater than the first threshold to less than or equal to the first threshold. If so, based on the ultra-wideband ranging module 220 and the card terminal The card-side ultra-wideband ranging module of the device performs card swiping communication to access the application data in the security unit 250 through the ultra-wideband ranging module 220 to complete the UWB card swiping operation.

After the card swiping operation of the card terminal device is successful, the control unit 240 is also used to generate an opening instruction of the gate or the access control system to open the gate or the access control system.

When the card swiping operation based on the ultra-wideband ranging module 220 is successful, in order to prevent the user from still bringing the card device, such as a mobile phone, close to the card reader 20 to swipe the card, the card reader 20 can be prohibited from communicating with the card through the near field communication module 230 The terminal device performs card swipe communication, such as card swipe transactions.

When the card swiping operation based on the ultra-wideband ranging module 220 fails due to reasons such as the card device moving too fast or unstable communication, the control unit 240 can also determine whether the first distance is less than the first threshold and greater than the second threshold, If so, the ultra-wideband ranging module 220 is controlled to re-perform one or more UWB card swiping operations to increase the probability of successful card swiping on the UWB channel (the channel corresponding to the ultra-wideband ranging module 220) and achieve senseless card swiping.

When the card-side device carries multiple cards, the application type is sent to the card-side device through the card reader 20, so that the card-side device automatically adjusts the application type to be consistent with the application type of the card reader 20, realizing intelligent card cutting and avoiding The user manually cuts the card; by adding the security unit 250, the security of card payment is improved.

Specifically, when the card swiping operation based on the ultra-wideband ranging module 220 fails, the control unit 240 determines whether the first distance is less than the second threshold; if so, the card reader 20 is prohibited from communicating with the card-side device through the ultra-wideband ranging module 220 Swipe the card to communicate, and complete the corresponding card swiping operation through the near field communication module 230 to prevent the ultra-wideband ranging module 220 and the near field communication module 230 from accessing the card side security unit of the card side device at the same time, resulting in repeated deductions.

When the card terminal device detects the field strength, it can communicate with the near field communication module 230 of the card swipe device through the card terminal near field communication module, thereby performing card swiping communication based on the near field communication channel to complete the corresponding card swiping operation.

In one embodiment, the card swipe communication corresponding to the ultra-wideband ranging module 220 and the card swipe communication corresponding to the near field communication module 230 are mutually exclusive operations to avoid repeated deductions.

For example, when the first distance between the card terminal device and the card reader 20 is in the range of 0.2 to 3 meters, the card swiping operation can be performed through the ultra-wideband ranging module 220. If it fails once, the card swiping operation can be repeated; when based on When the card swiping operations of the ultra-wideband ranging module 220 are unsuccessful, the card-side device and the reader If the first distance of the card device 20 is less than 0.2 (second threshold) meter, the ultra-wideband ranging module 220 is prohibited from performing card swiping communication with the card terminal device, and the near field communication module 230 is enabled. The card-side device detects the field strength of the radio frequency signal received by the card-side near field communication module. When the field strength is higher than the preset field strength, the card-side near field communication module and the near field communication module 230 of the card reader 20 A channel is established, and card swiping communication is performed based on the established channel, so as to complete the corresponding card swiping operation in conjunction with the security unit 250 . When any card swiping operation is successful, the corresponding access control or gate will be opened to allow users to pass.

In one embodiment, near field communication module 230 may remain on.

When the UWB-based sensorless card swiping operation fails, the card reader 20 automatically switches to the NFC channel (the channel corresponding to the near field communication module 230). At the same time, the card-side device can activate or deactivate the card-swiping application (Applet) in the card-side security unit. ) state, use the switched channel to access data related to the card swiping application to complete card swiping payment under the corresponding card swiping function.

Priority is given to using the UWB channel for sensorless card swiping. When the sensorless card swiping fails, the near field communication module 230 is controlled to perform contactless card swiping based on the first distance. At the same time, duplication is avoided through mutually exclusive settings of the UWB channel and NFC channel card swiping operations. Deduction.

Optionally, the control unit 240 is also configured to: when the card terminal device swipes the card successfully, generate an opening instruction of the gate or the access control system to open the gate or the access control system; obtain the ultra-wideband After the gate or the access control system is opened, the ranging module detects the second distance to the card-side device; when it is determined that the card-side device is in the away state based on the second distance, it is prohibited to communicate with the card-side device. The card terminal device performs card swiping communication.

In order to distinguish it from the first distance, after the card-side device swipes the card successfully, the distance to the card-side device detected by the ultra-wideband ranging module 220 is called the second distance.

The card-side device being in the away state may indicate that the distance between the card-side device and the card reader 20 is getting farther and farther.

Specifically, whether the card-side device is in the away state can be determined based on the second distance between the card-side device and the card reader 20 detected by the ultra-wideband ranging module 220 within a period of time. For example, based on the second distance within a period of time and the difference between adjacent second distances, etc., it is determined whether the card-side device is in the away state.

Further, if the card-side device is in an away state or the second distance from the card reader 20 is less than a set threshold, such as 1m, 2m or other values, the card reader 20 is prohibited from communicating with the card-side device by swiping the card, To avoid repeated deductions.

Further, whether the card-side device is in the away state can be determined based on the second distance and its corresponding measurement time.

In one embodiment, the detected second distance sequence between multiple card-side devices and the card reader 20 can be input into the leaving state determination model, and whether the card-side device is in the leaving state is determined based on the model. Wherein, the second distance sequence consists of the second distance and its corresponding measurement time.

For example, the leaving state determination model may be a neural network model.

When the card-side device has successfully swiped the card, when the card-side device is in the away state, through the above method of prohibiting card-swiping communication with the card-side device, repeated deductions for the card-side device that has been successfully swiped are effectively avoided, and the card swiping efficiency is improved. Control accuracy.

In one embodiment, in order to achieve accurate positioning of the card terminal device, the number of ultra-wideband ranging modules 220 is multiple, and the distance between each ultra-wideband ranging module 220 is at least a preset distance.

Among them, the preset distance can be 0.3m, 0.5m or other values.

When determining the motion state of the card-side device, the control unit 240 is specifically configured to: determine the distance to the card-side device detected by the multiple ultra-wideband ranging modules 220, such as the first distance and/or the second distance. The spatial position of the card-end device; according to the spatial position within a preset time period, the motion state of the card-end device is determined, wherein the motion state includes an approaching state and/or a leaving state.

Specifically, the control unit 240 can perform precise positioning of the card-side device based on the distances detected by multiple ultra-wideband ranging modules 220, thereby obtaining the spatial position of the card-side device. Then, combined with the spatial position of the card-side device within the preset time period, the motion state of the card-side device is determined, such as determining whether the card-side device is in the above-mentioned leaving state or the above-mentioned approaching state.

In one embodiment, the motion trajectory of the card-side device can be drawn based on the spatial position within a preset time period, and the motion state of the card-side device can be determined based on the motion trajectory.

For example, the motion state of the card-side device can be determined based on parameters such as the moving direction and moving speed of each motion node in the motion trajectory.

In one embodiment, the card can be determined based on any positioning model, such as the positioning model corresponding to the TDOA algorithm, the positioning model corresponding to the TOA algorithm, etc., based on the distance to the card-side device detected by multiple ultra-wideband ranging modules 220 The spatial location of the terminal device.

Through the multiple ultra-wideband ranging modules 220 provided, the precise positioning of the card terminal device is realized, thereby determining the motion state of the card terminal device based on the positioning, and formulating a reasonable card swiping control strategy based on the motion state, thereby improving the accuracy of card swiping control. While realizing senseless card swiping, it effectively avoids repeated deductions. payment.

In some scenarios, such as subway stations, there are many card-side devices. In order to reduce the amount of data processing, the Bluetooth module 210 is specifically a low-power Bluetooth module. The card-side devices can be filtered in advance through the low-power Bluetooth module, that is, Filter the card-side device based on the third distance measured by the low-power Bluetooth module from the card-side device, thereby reducing the number of awakened card-side ultra-wideband ranging modules, thereby reducing the amount of data processed, such as the first distance , and the amount of data required to process based on the first distance to determine the conditions corresponding to the UWB card swiping function.

The optional low-power Bluetooth module is also used to determine the third distance to each card terminal device that supports ultra-wideband card swiping function. Correspondingly, the control unit 240 is specifically configured to: filter the card-side devices based on the third distance, and use the ultra-wideband ranging module 220 or the near-field communication module according to the first distance of each screened card-side device. 230. Carry out card swiping communication with each filtered card terminal device to complete the card swiping operation.

The third distance is the distance between the card reader 20 and the card-side device detected by the low-power Bluetooth module of the card reader 20 .

Specifically, each card-side device can also be filtered based on the third distance, such as removing each card-side device whose third distance is greater than the third threshold. The third threshold is greater than the first threshold and can be 3m, 5m, 6m, 7m or other values.

For example, the low-power Bluetooth module can measure the above-mentioned third distance based on RSSI (Received Signal Strength Indicator, received signal strength indicator).

Specifically, the low-power Bluetooth module can only establish a connection with each card-side device whose third distance is less than or equal to the third threshold to interact with negotiated data, and wake up the card-side Bluetooth low-energy module whose third distance is less than or equal to the third threshold. The card-side ultra-wideband ranging module of each card-side device equals the third threshold to perform subsequent first distance measurements. Therefore, only the first distance between the card reader 20 and each card terminal device whose third distance is less than or equal to the third threshold is obtained, thereby reducing the number of first distances that need to be processed, thereby improving the efficiency of card swiping processing.

In one embodiment, the low-power Bluetooth module can only wake up the card-side ultra-wideband ranging module of the card-side device whose third distance from the card reader 20 is within the range of 3m to 5m.

In one embodiment, the control unit 240 or the low-power Bluetooth module can filter the card-side devices based on the third distance, such as deleting the card-side devices whose third distance is greater than the third threshold, so that the control unit 240 can filter the card-side devices according to the filtered The first distance between the card terminal device and the card reader 20 is measured by ultra-wideband The distance module 220 or the near field communication module 230 performs card swiping communication with the screened card terminal device to complete the card swiping operation.

Optionally, the Bluetooth module 210 is a low-power Bluetooth module, and is also used to determine the third distance to each card terminal device that supports the ultra-wideband card swiping function. The control unit 240 is specifically configured to: sort each of the card-side devices according to the order of the third distance from small to large; according to the sorting result, obtain the first distance of each card-side device in sequence, and calculate the first distance according to the sorting result. When the first distance determines that the card terminal device is in a close state, and the first distance is less than or equal to the first threshold, card swiping communication is performed with the card terminal device through the ultra-wideband ranging module 220 .

Specifically, the control unit 240 can determine whether each card terminal device meets the conditions corresponding to the UWB card swiping function based on the sorting result, that is, obtain the first distance between the card terminal device and the card reader 20, and determine the card terminal device based on the first distance. Whether the end device is in a close state, and if so, when the first distance is less than or equal to the first threshold, card swipe communication is performed with the card end device through the ultra-wideband ranging module 220 to perform data interaction corresponding to the UWB card swipe function through the UWB channel. . Further, the card-side devices can be filtered and sorted based on the third distance, thereby obtaining sorting results corresponding to each card-side device whose third distance is less than or equal to the third threshold.

By sorting the card-side devices based on the third distance, the card reader 20 prioritizes interactions corresponding to UWB ranging and card swiping operations with card-side devices that are closer to each other, thus avoiding the possibility of debiting when there are many card-side devices. The occurrence of wrong payment ensures the orderliness of UWB card payment.

Figure 4 is a schematic structural diagram of a card-side device according to Embodiment 1 of the present application. As shown in Figure 4, the card-side device 40 includes a card-side Bluetooth module 410 and a card-side ultra-wideband ranging module 420.

Among them, the card-side Bluetooth module 410 is used to broadcast the card swiping function supported by the card-side device 40, and to enable the card-side ultra-wideband ranging module 420 after connecting with the Bluetooth module of the card reader. The functions include an ultra-wideband card swiping function; a card-side ultra-wideband ranging module 420 for communicating with the ultra-wideband ranging module 220 of the card reader 20 to measure the distance between the card-side device 40 and the card reader 20; Ultra-wideband card swiping function.

Optionally, continuing to refer to FIG. 4 , the card terminal device 40 also includes a card terminal near field communication module 430 . The card swiping function supported by the card terminal device 40 also includes a near field communication card swiping function. The card terminal near field communication module 430 is used to communicate with the reader. The near field communication module 230 of the card device 20 communicates to realize the near field communication card swiping function.

The card-side Bluetooth module 410 may be a low-power Bluetooth module, denoted as a card-side Bluetooth low energy module.

Optionally, the card terminal device 40 also includes an application type switching module for: receiving the application of the card reader. Type; according to the application type of the card reader, switch the currently used application type to be consistent with the application type of the card reader.

Continuing to refer to FIG. 4 , the card terminal device 40 further includes a card terminal security unit 440 to complete the card swiping operation by accessing the card terminal security unit 440 .

Among them, the card-side security unit 440 can be set in the SIM card or memory card of the card-side device, or can be an eSE.

The card-side security unit 440 is also used to activate or deactivate the card-swiping application (applet) in the card-side security unit 440 when the card-swiping function is switched, so as to restore the status of the card-swiping application so as to maintain the switched card-swiping function. Provide the required data, wherein the card swiping function includes a near field communication card swiping function and an ultra-wideband card swiping function. Under the near field communication card swiping function, the card swiping operation is performed based on the card terminal near field communication module. Under the ultra-wideband card swiping function , perform the card swiping operation based on the card-side ultra-wideband ranging module.

The card swiping application is an application set in the card-side security unit 440 and is used to perform card swiping operations, such as providing data required for payment, performing data calculations, etc.

When the card swiping function is switched, the UWB card swiping function is usually switched to the NFC card swiping function, or the NFC card swiping function can be switched to the UWB card swiping function.

The switching of the card swiping function can be manifested in that the channel is switched, that is, the UWB channel is switched to the NFC channel.

Specifically, when the first distance between the card terminal device 40 and the card reader 20 is less than the second threshold, and the card terminal near field communication module 430 of the card terminal device 40 detects the field strength, then the card swiping function is changed to the UWB card swiping function. Switch to the NFC card swiping function. While the card swiping function is switching, when the UWB card swiping function is turned off or the UWB channel is closed, the card swiping application in the card-side security unit 440 is deactivated to restore the state of the application; when the NFC card swiping function is turned on or the NFC When the channel is established, the card swiping application in the card-side security unit 440 is activated, so that the card-side near field communication module 430 accesses the card swiping application in the card-side security unit 440 and performs corresponding card swiping communication to realize the NFC card swiping function. Figure 5 is a schematic structural diagram of a card swiping system according to Embodiment 1 of the present application. The card swiping system can be an access control system, a card swiping payment system, etc. As shown in Figure 5, the card swiping system includes a card reader 20 and multiple cards. Terminal device 40. The card reader 20 includes a Bluetooth module 210, an ultra-wideband ranging module 220, a near-field communication module 230, a control unit 240 and a security unit 250; the card-end device 40 includes a card-end Bluetooth module 410, a card-end ultra-wideband ranging module 420, The card-side near field communication module 430 and the card-side security unit 440.

In FIG. 5 , the Bluetooth module 210 and the card-side Bluetooth module 410 are both low-power Bluetooth modules BLE as an example.

The control unit 240 of the card reader 20 is connected to the Bluetooth module 210, the ultra-wideband ranging module 220, and the near field communication module 230 respectively.

The connection relationship shown in Figure 5 is only an example, and the actual connection relationship can be based on the data interaction process between the modules in the card swiping method.

In one embodiment, the card reader 20 also includes an MCU (Motor Control Unit) to open the gate or access control system by controlling the motor.

In one embodiment, the control unit 240 may be integrated in at least one of the Bluetooth module 210, the ultra-wideband ranging module 220, and the near field communication module 230.

For example, the control unit 240 can be partially integrated into the Bluetooth module 210 to wake up the ultra-wideband ranging module 220 and filter the card-side devices 40 , and another part of the control unit can be integrated into the ultra-wideband ranging module 220 to perform Determine the motion status of the card-side device. In FIG. 5 , the control unit 240 is taken as a separate module as an example.

The card-side Bluetooth module 410 of the card-side device 40 is respectively connected to the card-side ultra-wideband ranging module 420, the card-side near field communication module 430, and the card-side security unit 440. The card-side security unit 440 is respectively connected to the card-side Bluetooth module 410, the card-side Bluetooth module 410, and the card-side near field communication module 430. The end ultra-wideband ranging module 420 is connected to the card-end near field communication module 430.

Card side device 40 may also include an electronic wallet application. You can use the trusted service management module, including the service provider's trusted service management (SP-TSM, Service Provider Trusted Service Manager) and the security module publisher's trusted service management (SEI-TSM Secure, Element Issuer Trusted Service Manager). and electronic wallet server (Wallet Server) to manage trusted services during the card payment process.

Figure 6 is a schematic flow chart of a card swiping method provided by the embodiment of the present application. The card swiping method uses a card reader. The card reader can be the card reader 20 provided in the above embodiment, or any card reader equipped with a Bluetooth module or ultra-wideband module. The ranging module and the near field communication module can be executed by the control unit 240 on the card reader 20 .

As shown in Figure 6, the card swiping method includes the following steps:

S601: When the Bluetooth module scans a card terminal device that supports the ultra-wideband card swiping function, enable the ultra-wideband ranging module.

S602. Based on the ultra-wideband ranging module, detect the first distance to the card terminal device.

S603: When it is determined that the card-side device is in a close state according to the first distance, and the first distance is less than or equal to the first threshold, use the ultra-wideband ranging module to swipe the card with the card-side device. communication.

Optionally, the Bluetooth module is a Bluetooth Low Energy (BLE) module. Before detecting the first distance to the card terminal device based on the ultra-wideband ranging module, the method further includes : Based on the low-power Bluetooth module, determine the third distance to each card-side device; sort each of the card-side devices according to the order of the third distance from small to large; when according to the first When the distance determines that the card-side device is in a close state and the first distance is less than or equal to the first threshold, performing card swiping communication with the card-side device through the ultra-wideband ranging module includes: according to the sorting result, Obtain the first distance of each card-side device in turn, and when it is determined that the card-side device is in a close state according to the first distance and the first distance is less than or equal to a first threshold, use the ultra-wideband ranging Module to communicate with the card-side device by swiping the card.

Optionally, the method further includes: before performing card swiping communication with the card terminal device, sending the application type of the card reader to the card terminal device through the Bluetooth module or ultra-wideband ranging module. , to switch the application type of the card-side device; where the application type is used to characterize the supported or The type of card or emulated card used.

Relevant descriptions can be understood by referring to the relevant descriptions and effects corresponding to the steps provided by the corresponding embodiments of the card reader of this application, and will not be described in detail here.

Figure 7 is a schematic flow chart of Embodiment 2 of the card swiping method provided by the embodiment of the present application. This method uses a card-side device, such as the card-side device 40, or any card-side device equipped with a card-side broadband ranging module. The card-side device also A card-side near field communication module may be included, and the method may be specifically executed by a control unit of the card-side device.

As shown in Figure 7, the card swiping method provided by this embodiment includes the following steps:

S701: Based on the card-side Bluetooth module, broadcast the card-swiping function supported by the card-side device, where the card-swiping function supported by the card-side device includes an ultra-wideband card swiping function.

S702: After the card-side Bluetooth module is connected to the Bluetooth module of the card reader, enable the card-side ultra-wideband ranging module.

S703: Communicate between the card-end ultra-wideband ranging module and the ultra-wideband ranging module of the card reader to implement the measurement of the distance between the card-end device and the card reader and the ultra-wideband card swiping function.

For relevant descriptions of this implementation, please refer to the relevant descriptions and effects corresponding to the above-mentioned embodiments of this application, and will not be described in detail here.

FIG. 8 is a schematic structural diagram of Embodiment 1 of the control unit provided by the embodiment of the present application. As shown in FIG. 8 , the control unit includes: a memory 810 and at least one processor 820 .

The memory 810 stores computer execution instructions; at least one processor 820 executes the computer execution instructions stored in the memory 810, so that the at least one processor 820 executes the card swiping method provided by any embodiment of the present application.

Among them, the memory 810 and the processor 820 are connected through a bus 830.

Relevant descriptions can be understood by referring to the relevant descriptions and effects corresponding to the steps provided in the corresponding embodiments of the card swiping method of this application, and will not be described in detail here.

Embodiments of the present application also provide a computer-readable storage medium. Computer-executable instructions are stored in the computer-readable storage medium. When the processor executes the computer-executable instructions, the card swiping method provided by any embodiment of the present application is implemented. .

An embodiment of the present application also provides a computer program product, including a computer program. When the computer program is executed by a processor, the card swiping method as provided in any embodiment of the present application is implemented.

It can be understood that the various numerical numbers involved in the embodiments of the present application are only for convenience of description and are not used to limit the scope of the embodiments of the present application. In the embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not constitute the implementation process of the embodiments of the present application. Any limitations.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application. scope.

Claims

A card reader, characterized by including: a Bluetooth module, an ultra-wideband ranging module and a control unit;

Wherein, the Bluetooth module is used to enable the ultra-wideband ranging module when a card terminal device that supports ultra-wideband card swiping function is scanned;

The ultra-wideband ranging module is used to detect the first distance from the card terminal device;

The control unit is configured to communicate with the card through the ultra-wideband ranging module when it is determined that the card-side device is in a close state according to the first distance and the first distance is less than or equal to a first threshold. The terminal device performs card swiping communication.
The card reader according to claim 1, wherein the Bluetooth module is a low-power Bluetooth module and is also used for:

Determine the third distance to each card terminal device that supports ultra-wideband card swiping function;

The control unit is specifically used for:

Sort each of the card-side devices in ascending order of the third distance;

According to the sorting result, the first distance of each card-side device is obtained in turn, and when it is determined that the card-side device is in a close state according to the first distance, and the first distance is less than or equal to the first threshold, through the The ultra-wideband ranging module performs card swiping communication with the card terminal device.
The card reader according to claim 1 or 2, further comprising a near field communication module, and the card terminal device also supports a near field communication card swiping function;

The control unit is also used for:

When the card swiping operation based on the ultra-wideband ranging module fails and the first distance is less than the second threshold, the ultra-wideband ranging module is prohibited from performing card swiping communication with the card terminal device, and the card-swiping communication is prohibited through the near field communication module. , perform card swiping communication with the card terminal device;

Wherein, the second threshold is smaller than the first threshold.
The card reader according to any one of claims 1-3, characterized in that the control unit is also used to:

When the card terminal device swipes the card successfully, an opening instruction for the gate or the access control system is generated to open the gate or the access control system;

Obtain the second distance detected by the ultra-wideband ranging module from the card terminal device after the gate or the access control system is turned on;

When it is determined that the card terminal device is in the away state according to the second distance, card swiping communication with the card terminal device is prohibited.
The card reader according to any one of claims 1 to 4, characterized in that the number of the ultra-wideband ranging modules is multiple, and the distance between each of the ultra-wideband ranging modules is at least a preset distance. ; The control unit is specifically used for:

Determine the spatial position of the card-side device according to the distance to the card-side device detected by multiple ultra-wideband ranging modules;

According to the spatial position within a preset time period, the movement state of the card-end device is determined, wherein the movement state includes an approaching state and/or a leaving state.
The card reader according to any one of claims 1 to 4, characterized in that the control unit is also used to:

Before performing card swiping communication with the card-side device, send the application type of the card reader to the card-side device through the Bluetooth module or ultra-wideband ranging module;

Among them, the application type is used to characterize the type of card or simulated card supported or used.
The card reader according to any one of claims 1-6, characterized in that the Bluetooth module is specifically used for:

When a card-side device supporting the ultra-wideband card swiping function is scanned, initiate a connection to the card-side device;

After the connection is successful, perform parameter interaction with the card-side device to obtain the negotiation parameters of the ultra-wideband ranging module;

The ultra-wideband ranging module is enabled to measure distance based on the negotiation parameters.
A card-side device, characterized by including: a card-side Bluetooth module and a card-side ultra-wideband ranging module;

The card-side Bluetooth module is used to broadcast the card swiping function supported by the card-side device, and to enable the card-side ultra-wideband ranging module after being connected to the Bluetooth module of the card reader, wherein the card-side device supports Card swiping functions include ultra-wideband swiping functions;

The card-end ultra-wideband ranging module is used to communicate with the ultra-wideband ranging module of the card reader to realize the measurement of the distance between the card-end device and the card reader and the ultra-wideband card swiping function.
The card terminal device according to claim 8, characterized in that the card terminal device supports the card swiping function also includes a near field communication card swiping function, and the card terminal device further includes a card terminal near field communication module for communicating with the card reader. The near field communication module communicates to realize the near field communication card swiping function.
The card terminal device according to claim 8 or 9, further comprising an application type switching module for:

The application type of the receiving card reader;

According to the application type of the card reader, the currently used application type is switched to be consistent with the application type of the card reader.
The card terminal device according to any one of claims 8 to 10, further comprising a card terminal security unit to complete the card swiping operation by accessing the card terminal security unit;

The card-side security unit is also used for:

When the card swiping function is switched, activate or deactivate the card swiping application in the card-side security unit to restore the status of the card swiping application and provide the required data for the switched card swiping function, wherein the card swiping function includes nearly Field communication card swiping function and ultra-wideband card swiping function.
The card terminal device according to any one of claims 8-10, characterized in that the card terminal Bluetooth module is specifically used for:

After connecting with the Bluetooth module of the card reader, obtain the third distance between the card terminal device and the card reader; when the third distance is less than or equal to the third threshold, enable the card terminal of the card terminal device Ultra-wideband ranging module.
A card swiping method, characterized in that the method is applied to a card reader, and the card reader includes a Bluetooth module, an ultra-wideband ranging module and a control unit;

The methods include:

When the Bluetooth module scans a card terminal device that supports the ultra-wideband card swiping function, the ultra-wideband ranging module is enabled;

Based on the ultra-wideband ranging module, detect the first distance from the card terminal device;

When it is determined that the card-side device is in a close state according to the first distance and the first distance is less than or equal to a first threshold, card-swiping communication is performed with the card-side device through the ultra-wideband ranging module.
A card swiping method, characterized in that the method is applied to a card-side device, and the card-side device includes a card-side Bluetooth module and a card-side ultra-wideband ranging module;

The methods include:

Based on the card-side Bluetooth module, the card-side device broadcasts the card-swiping function supported by the card-side device, where the card-side device supports the card-side card swiping function including the ultra-wideband card-swiping function;

After the card-side Bluetooth module is connected to the Bluetooth module of the card reader, the card-side ultra-wideband ranging module is enabled;

The card-end ultra-wideband ranging module communicates with the ultra-wideband ranging module of the card reader to realize the measurement of the distance between the card-end device and the card reader and the ultra-wideband card swiping function.
A control unit, characterized by including a memory and at least one processor;

The memory stores computer execution instructions;

The at least one processor executes the computer execution instructions stored in the memory, so that the at least one processor executes the card swiping method as claimed in claim 13 or 14.