CN114830126A - Radio frequency card reader and radio frequency identification method - Google Patents
Radio frequency card reader and radio frequency identification method Download PDFInfo
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- CN114830126A CN114830126A CN202080086720.8A CN202080086720A CN114830126A CN 114830126 A CN114830126 A CN 114830126A CN 202080086720 A CN202080086720 A CN 202080086720A CN 114830126 A CN114830126 A CN 114830126A
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Abstract
A radio frequency card reader (500) and a radio frequency identification method, the radio frequency card reader (500) comprising a base (200) and a movable body (100), wherein the movable body (100) comprises: the antenna switching device comprises a radio frequency card reader chip (120) and an antenna switching component (110), wherein the radio frequency card reader chip (120) is provided with at least one first antenna interface; the base (200) comprises: the antenna matching network component (210) is coupled with the at least one second antenna interface, and the working mode of the radio frequency card reader can be flexibly switched according to requirements by utilizing the cooperation of the base (200) and the movable body (100).
Description
The present application relates to the field of radio frequency identification technologies, and in particular, to a radio frequency card reader and a radio frequency identification method.
Radio Frequency Identification (RFID) technology is widely used in industrial scenes and commercial environments for the purpose of identifying and tracking articles. RFID systems can be generally classified into two major categories, Active and Passive, and taking Passive radio frequency identification System (Passive RFID System) as an example, a Passive RFID System generally includes at least one RFID reader, a reader antenna, a server capable of communicating with the RFID reader, and a plurality of RFID Passive tags attached to tracked items.
In an RFID system, an RFID reader (may be simply referred to as "reader") plays an important role. On one hand, the card reader obtains RFID label information in a rated range through a card reader antenna; on the other hand, the card reader is communicated with the server, the read information is output to the server, and meanwhile, the instruction is also obtained from the server, so that the purposes of target identification, data transmission, process control and the like are achieved.
For different application scenarios or different application purposes, there are two types of card reader products available at present, one is a fixed card reader and the other is a portable card reader. The fixed card reader is large in size, is often fixed at a specific position for use, is generally provided with a plurality of antenna interfaces, is large in effective reading range, and is suitable for identifying and tracking multiple tags and large-range articles. The portable card reader is smaller in size compared with a fixed card reader, a single card reader antenna with lower efficiency is mostly used, the effective reading range is smaller, the portable card reader is usually held by an operator and is close to a tag to read information, and the portable card reader is suitable for short-distance reading, writing and tracking of a single tag.
Currently, in practical applications, with the evolution of the next generation wireless communication technology, the types and the number of application scenes related to users are greatly increased, which puts higher requirements on the performance of RFID products, and the old RFID products cannot meet the actual use requirements.
Disclosure of Invention
In view of this, embodiments of the present application provide a radio frequency card reader and a radio frequency identification method, which can meet radio frequency identification requirements of various application scenarios.
Embodiments of the present application provide a radio frequency card reader, which includes a base and a movable body, wherein,
the movable body comprises a radio frequency card reader chip and an antenna switching assembly, wherein the radio frequency card reader chip is provided with at least one first antenna interface; the base comprises an antenna matching network component and at least one second antenna interface, the antenna matching network component being coupled with the at least one second antenna interface; wherein the antenna switching assembly is to: under the condition that the movable body is separated from the base, at least one first antenna interface on the radio frequency card reader chip is taken as a working antenna interface of the radio frequency card reader; and under the condition that the movable body is combined with the base, at least one second antenna interface coupled with the antenna matching network component is used as a working antenna interface of the radio frequency card reader.
In this embodiment of the present application, the first antenna interface is used for connecting a first type antenna; the second antenna interface is used for connecting a second type antenna.
In the embodiment of the present application, the radio frequency card reader chip has one of the first antenna interfaces; under the condition that the movable body is separated from the base, the antenna switching component is used for communicating one first antenna interface on the radio frequency card reader chip with a preconfigured first type antenna; and under the condition that the movable body is combined with the base, the antenna switching component is used for communicating one first antenna interface on the radio frequency card reader chip with the antenna matching network component.
In an embodiment of the present application, the radio frequency card reader chip has a plurality of the first antenna interfaces, the plurality of the first antenna interfaces are coupled to a multi-way switching component, and the multi-way switching component is configured to gate one first antenna interface from the plurality of the first antenna interfaces; the antenna switching component is used for communicating the multi-path switching component with a pre-configured first type antenna under the condition that the movable body is separated from the base; and the antenna switching component is used for communicating the multi-path switching component with the antenna matching network component under the condition that the movable body is combined with the base.
In the embodiment of the present application, under the condition that the movable body is separated from the base, the antenna switching component is in a first state, so as to communicate one first antenna interface on the radio frequency card reader chip with a first type antenna; when the movable body is combined with the base, the antenna switching component is in a second state to communicate one of the first antenna interfaces on the radio frequency card reader chip with the antenna matching network component.
In an embodiment of the present application, the movable body further comprises a position sensing assembly; the position sensing component is used for detecting the position of the movable body, and if the movable body is detected to be separated from the base, the antenna switching component is informed to be switched to the first state; and if the movable body and the base are combined, informing the antenna switching component to switch to the second state.
In an embodiment of the present application, the movable body further includes a microcontroller, wherein the position sensing assembly sends first information to the microcontroller after detecting that the movable body is separated from the base, the microcontroller sends a first instruction to the antenna switching assembly after receiving the first information, and the antenna switching assembly switches to the first state after receiving the first instruction; the position sensing assembly sends second information to the microcontroller after detecting that the movable body is combined with the base, the microcontroller sends a second instruction to the antenna switching assembly after receiving the second information, and the antenna switching assembly is switched to the second state after receiving the second instruction.
In an embodiment of the present application, the movable body further comprises a switch coupled with the antenna switching assembly; the change-over switch is used for controlling the state of the antenna switching component, and when the change-over switch is arranged at a first gear, the change-over switch controls the antenna switching component to be switched to the first state; and when the change-over switch is arranged at a second gear, the antenna switching component is controlled to be switched to the second state.
In this embodiment of the present application, the base further includes an antenna extension component, the antenna extension component is coupled to the antenna matching network component, the antenna extension component is further coupled to at least one of the second antenna interfaces, and the antenna extension component is configured to extend each of the second antenna interfaces into a plurality of antenna interfaces.
In an embodiment of the present application, the base further includes a power management component, and the power management component is configured to supply power to the movable body after the movable body is combined with the base.
In the embodiment of the application, the base is provided with a shell, and the surface of the shell is provided with a mounting component which is used for mounting the base at a specified position.
In an embodiment of the present application, the movable body has a housing, and a holding portion is provided on the housing, and the holding portion is used for moving the movable body.
In this application embodiment, be provided with first equipment subassembly on the shell of base, be provided with second equipment subassembly on the shell of portable body, first equipment subassembly with second equipment subassembly corresponds, first equipment subassembly with second equipment subassembly is used for with portable body detachably assembles to on the base.
The embodiment of the present application further provides a radio frequency identification method, which is based on the radio frequency card reader as described above, wherein the base of the radio frequency card reader is disposed at a designated position, the at least one first antenna interface is connected with a first type antenna, and the at least one second antenna interface is connected with a second type antenna; the radio frequency identification method comprises the following steps: if the movable body is separated from the base, controlling the antenna switching assembly to use at least one first antenna interface on the radio frequency card reader chip as a working antenna interface of the radio frequency card reader; controlling a first type antenna connected with a working antenna interface to transmit a first radio frequency signal and receiving a second radio frequency signal which is fed back by an electronic tag and aims at the first radio frequency signal; and controlling the radio frequency card reader chip to process the second radio frequency signal.
In this embodiment of the application, if the movable body and the base are combined, the antenna switching component is controlled to use at least one second antenna interface coupled with the antenna matching network component as a working antenna interface of the radio frequency card reader; controlling a second type antenna connected with a working antenna interface to transmit a third radio frequency signal and receiving a fourth radio frequency signal which is fed back by an electronic tag and aims at the third radio frequency signal; and controlling the radio frequency card reader chip to process the fourth radio frequency signal.
In an embodiment of the application, the first type of antenna comprises an electrically small antenna and the second type of antenna comprises an omni-directional antenna.
The radio frequency card reader of the embodiment of the application changes the technical idea of independent design and independent use of a large-size fixed card reader and a small-size portable card reader in the past, but carries out integral design on a large-size base and a movable card reader body, and through the ingenious design of the embodiment of the application, the radio frequency card reader has the function modes of large-range multi-label identification and short-distance single label identification, a user can flexibly adopt two working modes according to use requirements, the use is convenient, and the cost is saved.
Fig. 1 is a schematic diagram illustrating an appearance effect of a radio frequency card reader according to an embodiment of the present application.
Fig. 2 is a schematic structural state diagram of a radio frequency card reader according to an embodiment of the present application.
Fig. 3 is a schematic structural state diagram of a radio frequency card reader according to another embodiment of the present application.
Fig. 4 is a schematic structural diagram of a radio frequency card reader according to still another embodiment of the present application.
The technical solutions of the embodiments of the present application will be described below with reference to the drawings of the embodiments of the present application. In which various details of embodiments of the present application are described to assist understanding, but merely as exemplary embodiments, it will be recognized by those skilled in the art that changes and modifications may be made to the specific embodiments described without departing from the principles and spirit of the embodiments of the present application, and therefore, all such changes and modifications are intended to be included within the scope of the embodiments of the present application. Moreover, for the sake of clarity and conciseness, descriptions of certain well-known functions and structures are omitted from the description of the specific embodiments and do not affect the implementation of the embodiments of the present application.
The term "and/or" is used herein to describe an association relationship of multiple association objects, for example, three association relationships that may exist between two association objects are represented, for example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" herein generally indicates a relationship in which the former and latter associated objects are "or".
It should be understood that, in the embodiments of the present application, the sizes of the sequence numbers of the various processes involved do not mean the execution sequence, and the execution sequence of the processes is determined by the functions and the inherent logic, so the sizes of the sequence numbers do not particularly limit the implementation process of the embodiments of the present application.
Fig. 1 schematically illustrates an external effect of a radio frequency card reader 500 according to an embodiment of the present application, where the radio frequency card reader 500 includes a movable body 100 and a base 200, and a plurality of antennas 300 (4 are shown in fig. 1) are mounted on the base 200, and in an implementation, the antennas 300 may be omnidirectional antennas capable of reading information in a wide range. In other embodiments, the number of antennas 300 may also be 1, 2, 6, 16, more, or less.
The radio frequency card reader 500 of the embodiment of the present application is a reconfigurable RFID card reader, because: first, the housing of the base 200 has a mounting component, so that the base 200 can be mounted at a designated position, for example, fixedly mounted on a roof, a wall surface, a door frame of an entrance, etc., and can transmit radio frequency signals through the antenna 300; secondly, a card reader chip and a microprocessor are arranged inside the shell of the movable body 100, the radio frequency front end of the card reader chip is provided with an antenna interface, and a small electric antenna with low efficiency can be installed; also, the movable body 100 may be used in combination with the base 200 or separately from the base 200, for example, a first assembly member may be provided on a housing of the base, and a second assembly member may be provided on a housing of the movable body 100, the first assembly member and the second assembly member corresponding to each other for detachably assembling the movable body 100 to the base.
Based on the reconfigurable design principle, when the user mounts the movable body 100 on the base 200 for combined use, the working antenna of the radio frequency card reader 500 is a plurality of antennas 300 (e.g., omnidirectional antennas or other suitable types of antennas) on the base 200, and when the user detaches the movable body 100 from the base 200 for separate use, the working antenna of the radio frequency card reader 500 is an antenna (e.g., electrically small antenna or other suitable types of antennas) mounted on the movable body 100.
According to the use requirements of different application scenes, a user can flexibly select a combined mode or a separated mode of the radio frequency card reader 500, the omnidirectional antenna on the base 200 can read a large amount of label information in a large range in the combined mode, the user can hold the movable body 100 by hand to read the label information in a close range in the separated mode, the advantages of an old fixed card reader and an old portable card reader are considered practically, the reconfigurable fusion design is convenient to use and wide in application range, and the hardware cost can be reduced to a certain extent.
Fig. 2 is a schematic structural state diagram illustrating a radio frequency card reader in a separated operation mode according to an embodiment of the present application. Fig. 3 shows a schematic structural state diagram of the radio frequency card reader in the combined operation mode according to the embodiment of the present application. Various aspects of the radio frequency card reader of the embodiments of the present application are described in detail below with reference to the drawings.
The radio frequency card reader of the embodiment of the application comprises a movable body 100 and a base 200, and specifically, the movable body 100 comprises: a radio frequency card reader chip 120, an antenna switching component 110 and a microcontroller 130, wherein the radio frequency card reader chip 120 and the antenna switching component are respectively coupled with the microcontroller, and the radio frequency card reader chip has at least one first antenna interface (1 is shown in fig. 2). The base 200 includes: an antenna matching network component 210 and at least one second antenna interface (4 are shown in fig. 2), the antenna matching network component 210 being coupled with the at least one second antenna interface.
The antenna switching component 110 of the movable body 100 is used to implement that the radio frequency card reader can select the first antenna interface or the second antenna interface as a working antenna interface under different conditions.
In one embodiment of the present application, the antenna switching component 110 may have a first state and a second state; wherein, in case the movable body 100 is separated from the base 200, the antenna switching assembly 110 is in the first state; in the case where the movable body 100 is combined with the base 200, the antenna switching assembly 110 is in the second state.
By controlling the state of the antenna switching assembly 110, the radio frequency card reader can use the first antenna interface as a working antenna interface when the movable body 100 is separated from the base 200, that is, when the antenna switching assembly 110 is in the first state; moreover, when the movable body 100 is combined with the base 200, that is, when the antenna switching assembly 110 is in the second state, the rf card reader uses the second antenna interface as a working antenna interface.
The antenna matching network component 210 in the base 200 is used for impedance matching, so that the system can transmit maximum signal energy, and the influence of echo on signal quality and available power is reduced. The antenna matching network component 210 in the embodiment of the present application may be implemented by using an existing antenna matching network in the field, and the function and the working principle thereof are not described in detail.
The antenna switching component 110 according to the embodiment of the present application can be implemented by various embodiments, and is described in detail by various embodiments below.
Example 1
The radio frequency card reader of the present embodiment includes a movable body 100 and a base 200 as shown in fig. 2 or fig. 3. In this embodiment, the rf card reader chip 120 has a first antenna interface.
With the movable body 100 separated from the base 200, as shown in fig. 2, the antenna switching assembly 110 communicates one first antenna interface on the rf card reader chip 120 with a preconfigured first type antenna;
with the moveable body 100 in combination with the base 200, the antenna switching component 110 communicates a first antenna interface on the radio frequency card reader chip 120 with the antenna matching network component 210.
Wherein the antenna matching network component 210 is further coupled to at least one second antenna interface, on which a second type of antenna can be mounted.
Through the above embodiment, during the process of using the radio frequency card reader, if the user takes the movable body 100 off the base 200, the movable body 100 is separated from the base 200, and at this time, the antenna switching assembly 110 enters the first state, and it connects the first antenna interface with the preconfigured first type antenna, that is, the first antenna interface is used as a working interface, and the first type antenna receives and transmits the radio frequency signal, so as to read the tag information.
If the user reassembles the movable body 100 back to the base 200 to combine the movable body 100 and the base 200, the antenna switching component 110 enters the second state, which disconnects the first antenna interface from the first type of antenna and connects the first antenna interface to the antenna matching network component 210, and at this time, since the second type of antenna may be installed on one or more second antenna interfaces on the antenna matching network component 210, the radio frequency card reader uses the second antenna interface as a working interface, and the second type of antenna receives and transmits radio frequency signals to read tag information.
Taking the first type of antenna as an electrically small antenna and the second type of antenna as an omnidirectional antenna as an example, after the user takes the movable body 100 off the base 200, the antenna switching component 110 connects the first antenna interface on the radio frequency card reader chip 120 in the movable body 100 with the electrically small antenna, so that the user can hold the movable body 100 by hand to move within the target area, read tag information in a short distance, and conveniently track and position the tag.
After the user puts the movable body 100 back on the base 200, the antenna switching component 110 connects the first antenna interface in the movable body 100 to the antenna matching network component 210 in the base 200, so that the antenna matching network component 210 can receive the radio frequency signal sent by the radio frequency card reader chip 120, and further transmit and receive the radio frequency signal through the omnidirectional antenna on the coupled second antenna interface, thereby tracking the tag in the range covered by the omnidirectional antenna and completing the switching between the two working modes.
Example 2
The radio frequency card reader of the present embodiment includes a movable body 100 and a base 200 as shown in fig. 2 or fig. 3. The difference between the present embodiment and embodiment 1 is mainly that the radio frequency card reader chip 120 has a plurality of first antenna interfaces, for example, the radio frequency card reader chip 120 has a plurality of radio frequency front ends therein, and each radio frequency front end has one first antenna interface. In this case, a multiplexer (not shown) is connected to the plurality of first antenna interfaces, and the multiplexer can gate one of the plurality of first antenna interfaces. Specifically, the multi-channel switching module is connected to the microprocessor 130, and one of the first antenna interfaces can be selected to be connected according to an instruction of the microprocessor 130, and the rest of the first antenna interfaces are disconnected.
In this embodiment, under the condition that the main body is separated from the base, the antenna switching component 110 connects the multiple switching components with the first type of antenna, and under the condition that the main body is combined with the base, the antenna switching component 110 connects the multiple switching components with the antenna matching network component 120, so that the radio frequency signal can sequentially pass through the first antenna interface in the movable main body 100, the multiple switching components, the antenna switching component 110, the antenna matching network component 120 in the base 200, and the second antenna interface, and finally reach the second type of antenna, thereby completing the switching of the two working modes.
Example 3
The radio frequency card reader of the present embodiment includes a movable body 100 and a base 200 as shown in fig. 2 or fig. 3. The present embodiment is different from embodiment 1 mainly in that the movable body 100 of the present embodiment further includes a switch (not shown in the figure), the switch is coupled to the antenna switching element 110 and is used for controlling the state of the antenna switching element 110, and when the switch is set to the first gear, the switch controls the antenna switching element 110 to switch to the first state, so that the first antenna interface on the movable body 100 is used as a working interface; when the switch is set to the second position, it controls the antenna switching component 110 to switch to the second state, and uses the second antenna interface on the base 200 as the working interface.
When a user uses the radio frequency card reader of this embodiment, the working mode of the card reader can be actively switched through the switch, for example, when the user takes the movable body 100 off the base, the switch can be turned to the first gear, so that the antenna switching assembly 110 is switched to the first state, and at this time, the antenna switching assembly enters the separated working mode, and the user can start to read target tag information by holding the movable body 100; after the user installs the movable body 100 back on the base 200, the switch can be turned to the second position, so that the antenna switching assembly 110 is switched to the second state, and the rf card reader enters the combined working mode, and can start to read tag data in a larger range around.
Example 4
The radio frequency card reader of the present embodiment includes a movable body 100 and a base 200 as shown in fig. 2 or fig. 3. The difference between the present embodiment and embodiment 3 is mainly that, in the present embodiment, the state of the antenna switching component 110 is not controlled by the switch, but the position of the movable body 100 is detected by installing a position sensing component, so as to determine the operating state of the radio frequency card reader.
Specifically, if the position sensing assembly detects that the movable body 100 is separated from the base 200, the antenna switching assembly 110 is notified to switch to the first state; if the position sensing component detects that the body is combined with the base, the antenna switching component is informed to be switched to a second state.
In one possible embodiment, the position sensing assembly may be implemented by using a plurality of components, for example, at least one of a short circuit switch, an infrared sensor, and a proximity switch may be mounted on the movable body 100 and/or the base 200, and whether the movable body 100 is mounted on the base 200 in combination may be detected.
Coupling the position sensing assembly with the microcontroller, sending first information to the microcontroller when the position sensing assembly detects that the body is separated from the base, sending a first instruction to the antenna switching assembly after the microcontroller receives the first information, and switching the antenna switching assembly to a first state after the antenna switching assembly receives the first instruction; similarly, when the position sensing assembly detects that the body and the base are combined, second information is sent to the microcontroller, the microcontroller sends a second instruction to the antenna switching assembly after receiving the second information, and the antenna switching assembly is switched to a second state after receiving the second instruction, so that the switching of two working modes of the radio frequency card reader is realized.
Example 5
The radio frequency card reader of the present embodiment includes a movable body 100 and a base 200 as shown in fig. 2 or fig. 3. The base 200 in this embodiment further comprises an antenna extension component coupled to the antenna matching network component 120 and further coupled to the at least one second antenna interface. The antenna expansion component can expand one antenna interface into a plurality of antenna interfaces, and can install more antennas for the card reader.
During operation, in the combined operation mode of the rf card reader, the antenna matching network component 120 receives the rf signal transmitted by the antenna switching component 110, and the rf signal may be transmitted to each of the second type antennas, such as an omni-directional antenna, through the antenna extension component.
By using the embodiment, the effective reading range of the card reader can be increased by placing the antennas at different spatial positions, and the performance of the card reader is improved.
Example 6
The radio frequency card reader of the embodiment comprises a movable body 100 and a base 200 as shown in fig. 2 or fig. 3. The base 200 in this embodiment further includes a power management component that can provide power to the body in the combined mode of operation of the radio frequency card reader. For example, if the main body is provided with a rechargeable battery, such as a lithium battery, the power management assembly can charge the battery of the main body, and the main body can be taken off and work independently to have enough power.
Based on any one or a combination of the embodiments 1-6 described above, a radio frequency identification method may be performed, comprising the steps of:
s101, if the movable body 100 is separated from the base 200, controlling the antenna switching component 110 to use at least one first antenna interface on the radio frequency card reader chip 120 as a working antenna interface of the radio frequency card reader;
s102, controlling a first type antenna connected with a working antenna interface to transmit a first radio frequency signal and receiving a second radio frequency signal fed back by an electronic tag;
and S103, controlling the radio frequency card reader chip to process the second radio frequency signal.
Also, the following radio frequency identification method may be performed:
s201, if the movable body 100 and the base 200 are combined, controlling the antenna switching component 110 to use at least one second antenna interface coupled with the antenna matching network component 210 as a working antenna interface of the radio frequency card reader;
s202, controlling a second antenna connected with a working antenna interface to transmit a third radio frequency signal and receiving a fourth radio frequency signal fed back by an electronic tag;
s203, controlling the radio frequency card reader chip to process the fourth radio frequency signal.
By using the radio frequency identification method, a user can flexibly select the combined mode or the separated mode of the radio frequency card reader, a large amount of label information in a large range can be read in the combined mode, the movable body is held by hand to read the label information in a close range in the separated mode, the working mode is convenient to switch, and the use is convenient.
It is to be noted that the term "movable body" used herein may also mean a movable module, a movable member, a movable assembly, a moving module, a moving member, or a moving assembly, and the like. The tags involved in the embodiments of the present application may be active tags, passive tags, and/or semi-active tags, etc. existing in the field; the antenna interface and the antenna related to the embodiment of the application can be the antenna interface and the antenna which accord with the relevant standards, and the type, the model and the like of the antenna are not additionally limited; the components such as the short-circuit switch and the like in the embodiment of the present application may adopt existing related electronic components, circuit modules or functional modules, and the implementation of the embodiment of the present application has no special requirement or limitation on the above contents.
In order to more clearly describe the implementation process of the embodiment of the present application, fig. 4 schematically shows a structural schematic diagram of a reconfigurable RFID reader according to an embodiment of the present application, which includes: fixed baseplate and removal module, wherein, including RFID card reader chip in the removal module, fixed baseplate does not contain the card reader chip, and is further, including antenna switch and position inductor in the removal module, the antenna switch can switch the antenna interface that the chip was drawn to the removal module from the little strong polarization antenna of electricity that takes, perhaps switches the antenna interface that the chip was drawn to the antenna interface of fixed baseplate.
Specifically, the mobile module further includes a microcontroller, a network interface module, and a memory module. The RFID card reader chip is internally provided with a radio frequency front end module, a digital signal processing module, a clock, a power management module and the like. The fixed base comprises an antenna matching network, an antenna expander, a microcontroller, a power management module and the like.
The position sensor can detect and judge the position of the mobile module, namely, detect whether the mobile module is connected with the fixed base (namely, in a combined mode) or disconnected with the fixed base (namely, in a separated mode). The microprocessor in the mobile module can change the state of the antenna switcher according to the position state of the mobile module reported by the position sensor.
When the card reader moving module is placed on the fixed base, the antenna switcher switches the antenna to the matching network port of the fixed base. The matching network is connected to the antenna of the fixed base through the antenna expander, and the antenna of the fixed base adopts an omnidirectional antenna to increase the reading coverage. In addition, the power management module of the fixed base supplies power to the mobile module. When the mobile module is separated from the fixed base, the mobile module can maintain the operation of the mobile module with a power supply, and the antenna switcher switches the antenna to the small and strong polarized antenna on the mobile module, so that the function of the handheld card reader is realized.
The reconfigurable RFID card reader of the embodiment of the application realizes two working modes of fixing and carrying by one RFID card reader chip unprecedentedly, so that the hardware cost can be saved, two independent devices are simplified and integrated into one device, the radio frequency identification method based on the device can give consideration to multi-label identification and close-range single-label identification in a large range, and a convenient operation mode is provided for a user to the maximum extent.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (17)
- A radio frequency card reader, comprising: a base and a movable body, wherein,the movable body comprises a radio frequency card reader chip and an antenna switching assembly, wherein the radio frequency card reader chip is provided with at least one first antenna interface;the base comprises an antenna matching network component and at least one second antenna interface, the antenna matching network component being coupled with the at least one second antenna interface; wherein the content of the first and second substances,the antenna switching assembly is configured to:under the condition that the movable body is separated from the base, at least one first antenna interface on the radio frequency card reader chip is taken as a working antenna interface of the radio frequency card reader; andand under the condition that the movable body is combined with the base, at least one second antenna interface coupled with the antenna matching network component is used as a working antenna interface of the radio frequency card reader.
- The radio frequency card reader of claim 1,the first antenna interface is used for connecting a first type of antenna;the second antenna interface is used for connecting a second type antenna.
- The radio frequency card reader of claim 1 or 2,the radio frequency card reader chip is provided with the first antenna interface;under the condition that the movable body is separated from the base, the antenna switching component is used for communicating one first antenna interface on the radio frequency card reader chip with a first antenna;and under the condition that the movable body is combined with the base, the antenna switching component is used for communicating one first antenna interface on the radio frequency card reader chip with the antenna matching network component.
- The radio frequency card reader of claim 1 or 2,the radio frequency card reader chip is provided with a plurality of first antenna interfaces, the plurality of first antenna interfaces are coupled to a multi-way switching component, and the multi-way switching component is used for gating one first antenna interface from the plurality of first antenna interfaces;under the condition that the movable body is separated from the base, the antenna switching assembly is used for communicating the multi-path switching assembly with the first type of antenna; and the number of the first and second groups,the antenna switching assembly is configured to communicate the multipath switching assembly with the antenna matching network assembly when the movable body is combined with the base.
- The radio frequency card reader of any of claims 1-4,under the condition that the movable body is separated from the base, the antenna switching component is in a first state so as to communicate one first antenna interface on the radio frequency card reader chip with a first type antenna;when the movable body is combined with the base, the antenna switching component is in a second state to communicate one of the first antenna interfaces on the radio frequency card reader chip with the antenna matching network component.
- The radio frequency card reader of claim 5, wherein the movable body further comprises a position sensing component;the position sensing assembly is configured to:detecting a position of the movable body;if the movable body is detected to be separated from the base, informing the antenna switching component to be switched to the first state;and if the movable body and the base are combined, informing the antenna switching component to switch to the second state.
- The radio frequency card reader of claim 6, wherein the movable body further comprises a microcontroller, wherein,the position sensing assembly sends first information to the microcontroller after detecting that the movable body is separated from the base, the microcontroller sends a first instruction to the antenna switching assembly after receiving the first information, and the antenna switching assembly is switched to the first state after receiving the first instruction;the position sensing assembly sends second information to the microcontroller after detecting that the movable body is combined with the base, the microcontroller sends a second instruction to the antenna switching assembly after receiving the second information, and the antenna switching assembly is switched to the second state after receiving the second instruction.
- The radio frequency card reader of claim 5, wherein the movable body further comprises a diverter switch coupled with the antenna switching assembly;the change-over switch is used for:controlling a state of the antenna switching component;when the change-over switch is arranged at a first gear, the antenna switching component is controlled to be switched to the first state;and when the change-over switch is arranged at a second gear, the antenna switching component is controlled to be switched to the second state.
- The radio frequency card reader of any of claims 1-8,the base further comprises an antenna extension component coupled with the antenna matching network component, the antenna extension component is further coupled with at least one of the second antenna interfaces, and the antenna extension component is used for extending each of the second antenna interfaces into a plurality of antenna interfaces.
- The radio frequency card reader of any one of claims 1-9,the base further comprises a power management assembly, and the power management assembly is used for supplying power to the movable body after the movable body and the base are combined.
- The radio frequency card reader of any one of claims 1-10,the base is provided with a shell, and a mounting assembly is arranged on the shell and used for mounting the base at a specified position.
- The radio frequency card reader of any one of claims 1-11,the movable body is provided with a shell, a holding part is arranged on the shell, and the holding part is used for moving the movable body.
- The radio frequency card reader of any one of claims 1-12,the movable body is characterized in that a first assembly component is arranged on the shell of the base, a second assembly component is arranged on the shell of the movable body, the first assembly component corresponds to the second assembly component, and the first assembly component and the second assembly component are used for detachably assembling the movable body onto the base.
- The radio frequency card reader of any one of claims 1-13,the first type of antenna comprises an electrically small antenna and the second type of antenna comprises an omni-directional antenna.
- A radio frequency identification method, which is based on the radio frequency card reader as claimed in any one of claims 1-14, wherein the base of the radio frequency card reader is arranged at a designated position, the at least one first antenna interface is connected with a first type of antenna, and the at least one second antenna interface is connected with a second type of antenna;the method comprises the following steps:if the movable body is separated from the base, controlling the antenna switching assembly to use at least one first antenna interface on the radio frequency card reader chip as a working antenna interface of the radio frequency card reader;controlling a first type antenna connected with a working antenna interface to transmit a first radio frequency signal and receiving a second radio frequency signal which is fed back by an electronic tag and aims at the first radio frequency signal;and controlling the radio frequency card reader chip to process the second radio frequency signal.
- The method of claim 15, wherein the further method comprises:if the movable body and the base are combined, controlling the antenna switching component to use at least one second antenna interface coupled with the antenna matching network component as a working antenna interface of the radio frequency card reader;controlling a second type antenna connected with a working antenna interface to transmit a third radio frequency signal and receiving a fourth radio frequency signal which is fed back by an electronic tag and aims at the third radio frequency signal;and controlling the radio frequency card reader chip to process the fourth radio frequency signal.
- The method of claim 15 or 16,the first type of antenna comprises an electrically small antenna and the second type of antenna comprises an omni-directional antenna.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/078080 WO2021174509A1 (en) | 2020-03-05 | 2020-03-05 | Radio frequency card reader and radio frequency identification method |
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| Publication Number | Publication Date |
|---|---|
| CN114830126A true CN114830126A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202080086720.8A Pending CN114830126A (en) | 2020-03-05 | 2020-03-05 | Radio frequency card reader and radio frequency identification method |
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| Country | Link |
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| CN (1) | CN114830126A (en) |
| WO (1) | WO2021174509A1 (en) |
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| WO2021174509A1 (en) | 2021-09-10 |
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