CN109388993B - Electronic tag identification method and system - Google Patents
Electronic tag identification method and system Download PDFInfo
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- CN109388993B CN109388993B CN201811143490.5A CN201811143490A CN109388993B CN 109388993 B CN109388993 B CN 109388993B CN 201811143490 A CN201811143490 A CN 201811143490A CN 109388993 B CN109388993 B CN 109388993B
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- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
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Abstract
The invention discloses an electronic tag identification method and system, and relates to the field of tag identification. The method comprises the following steps: the read-write equipment sends an identification signal; when the electronic tag enters the identification area of the read-write equipment, the electronic tag continuously receives an identification signal; the electronic tag changes the state of the electronic tag according to the identification signal and sends a feedback signal when the electronic tag is in a first state; and when the read-write equipment receives the feedback signal, the read-write equipment identifies the feedback signal. The probability of failure of the read-write equipment in identifying the electronic tag is reduced, and the identification accuracy of the read-write equipment is improved.
Description
Technical Field
The invention relates to the field of tag identification, in particular to an electronic tag identification method and system.
Background
The hotel has become one of the common buildings, the linen in the hotel also needs to be strictly managed as the assets of the hotel, the traditional linen management of the hotel usually uses manual check, the linen management process is complex and tedious, and mistakes are easily made. With the development of the internet of things technology, the internet of things technology is applied to linen management, the RFID tags are sewn on the linen, and the linen is read through the reader with the antenna, so that the management of the linen can be realized, the management process of the linen is simple and convenient, the management efficiency is high, and the management of a hotel on the linen is facilitated.
In the actual use process, the RFID tags on the single linen can provide a large number of signals for the reader to read in the linen scanning process, and the reader can read a large number of signals sent by the RFID tags due to the fact that the number of the linen in the hotel is large, so that the time of the reader for reading the RFID tags is increased, and the identification efficiency of the reader is reduced.
Meanwhile, when one RFID label is read in the reader, a large number of signals sent by other RFID labels exist in the reader, so that the possibility that the reader identifies the RFID label to be read is reduced, the possibility that the reader fails to identify the RFID label is further caused, and the identification accuracy of the reader on the RFID label is reduced.
Disclosure of Invention
The invention aims to provide an electronic tag identification method and system, which reduce the possibility of failure of reading and writing equipment in identifying an electronic tag and increase the identification accuracy of the reading and writing equipment.
The technical scheme provided by the invention is as follows:
an electronic tag identification method, comprising: the read-write equipment sends an identification signal; when the electronic tag enters the identification area of the read-write equipment, the electronic tag continuously receives an identification signal; the electronic tag changes the state of the electronic tag according to the identification signal and sends a feedback signal when the electronic tag is in a first state; and when the read-write equipment receives the feedback signal, the read-write equipment identifies the feedback signal.
Further, the step of the electronic tag changing the state of the electronic tag according to the identification signal and sending a feedback signal when the electronic tag is in the first state specifically includes: the electronic tag acquires a state change mode in the identification signal; and when the acquired state change mode is a continuous change mode, the electronic tag changes cyclically between the first state and the second state, and sends a feedback signal when the electronic tag is in the first state.
Further, when the acquired state change mode is a continuous change mode, the electronic tag changes cyclically between the first state and the second state, and sending a feedback signal when the electronic tag is in the first state specifically includes: when the acquired state change mode is a continuous change mode, the electronic tag continuously analyzes whether the state of the electronic tag changes or not; when the state of the electronic tag is changed from the second state to the first state, the electronic tag sends a feedback signal; the electronic tag is changed from a first state to a second state; when the state of the electronic tag is changed from a first state to a second state, the electronic tag continuously acquires the time for maintaining the second state; and when the time for maintaining the second state of the electronic tag reaches the preset maintaining time, the electronic tag is changed from the second state to the first state.
Further, the electronic tag further comprises, after acquiring the state change manner in the identification signal: when the acquired state change mode is a single change mode, the electronic tag analyzes whether the state of the electronic tag is a first state; when the state of the electronic tag is not analyzed to be the first state, the electronic tag is changed from the second state to the first state; when the state of the electronic tag is analyzed to be a first state, the electronic tag sends a feedback signal; the electronic tag is changed from the first state to the second state.
Further, after the electronic tag is changed from the first state to the second state, the method further comprises the following steps: when the electronic tag is separated from the identification area, the electronic tag analyzes whether the time for separating from the identification area is greater than preset separation time; and when the time of separating from the identification area is longer than the preset separation time, the electronic tag is changed from the second state to the first state.
Further, when the read-write device receives the feedback signal, the identifying, by the read-write device, the feedback signal specifically includes: when the read-write equipment receives the feedback signal, the read-write equipment analyzes whether the same feedback signal is received within a preset scanning time period; and when the same feedback signal is not received in a preset scanning time period, the read-write equipment identifies the feedback signal.
One of the objectives of the present invention is to provide an electronic tag identification system, which includes a read-write device and an electronic tag, wherein the read-write device includes a device signal module and an identification module, and the electronic tag includes a tag signal module and a state change module; the equipment signal module is used for sending an identification signal; when the electronic tag enters the identification area of the read-write equipment, the tag signal module continuously receives the identification signal; the state changing module changes the state of the electronic tag according to the identification signal; when the electronic tag is in a first state, the tag signal module sends a feedback signal; when the equipment signal module receives the feedback signal, the identification module identifies the electronic tag in a first state.
Further, the state change module includes: the mode acquiring unit is used for acquiring a state change mode in the identification signal; the first state changing unit controls the electronic tag to change cyclically between a first state and a second state when the state changing mode acquired by the mode acquiring unit is a continuous changing mode; the tag signal module sends a feedback signal when the electronic tag is in a first state.
Further, the first state changing unit includes: the change analysis subunit continuously analyzes whether the state of the change analysis subunit is changed or not when the state change mode acquired by the mode acquisition unit is a continuous change mode; when the change analysis subunit analyzes that the state of the electronic tag is changed from the second state to the first state, the tag signal module sends a feedback signal; the first change subunit controls the electronic tag to change from a first state to a second state; the time acquisition subunit is used for acquiring the time for the electronic tag to continuously maintain the second state when the state analysis subunit analyzes that the state of the electronic tag is changed from the first state to the second state; the time analysis subunit is used for analyzing whether the time for maintaining the second state of the electronic tag reaches the preset maintaining time or not; when the time for maintaining the second state of the electronic tag reaches the preset maintaining time, the first changing subunit controls the electronic tag to change from the second state to the first state.
Further, the state change module includes a second state change unit, and the second state change unit includes: the state analysis subunit is used for analyzing whether the state of the electronic tag is a first state or not when the state change mode acquired by the mode acquisition unit is a single change mode; the second change subunit controls the electronic tag to change from the second state to the first state when the state analysis subunit analyzes that the state of the electronic tag is not the first state; when the state analysis subunit analyzes that the state of the electronic tag is a first state, the tag signal module sends a feedback signal; the second change subunit controls the electronic tag to change from the first state to the second state.
Further, the second state changing unit further includes: a separation analysis subunit, configured to analyze whether a time for separating from the identification area is greater than a preset separation time when the electronic tag separates from the identification area; and when the time of separating from the identification area is longer than the preset separation time, the second change subunit controls the electronic tag to change from the second state to the first state.
Further, the identification module includes: the feedback analysis unit is used for analyzing whether the same feedback signal is received in a preset scanning time period or not when the equipment signal module receives the feedback signal; and the identification unit identifies the feedback signal when the same feedback signal is not received in a preset scanning time period.
Compared with the prior art, the electronic tag identification method and the electronic tag identification system provided by the invention have the following beneficial effects:
1. because the feedback signal of a single electronic tag is reduced, the possibility that the feedback signals of other electronic tags still exist in the read-write equipment when the read-write equipment identifies the feedback signal is reduced, the possibility that the read-write equipment fails to identify the electronic tag is reduced, and the identification accuracy of the read-write equipment is improved.
2. The identification signal at least comprises a state changing mode of the electronic tag, and when the state changing mode acquired by the electronic tag is a continuous changing mode, the electronic tag can be changed cyclically between a first state and a second state, namely when the electronic tag enters an identification area of the read-write equipment, the electronic tag can continuously change the state.
3. After the electronic tag is separated from the identification area, the electronic tag is in the second state and can maintain the preset separation time, the electronic tag is prevented from entering the identification area again, the possibility of error identification of the electronic tag is reduced, and the identification accuracy of the reading and writing equipment is improved.
4. By screening out repeated feedback signals, the feedback signals of the single electronic tag in the identification area, which are identified and recorded by the read-write equipment, are further reduced, so that the possibility that the feedback signals of other electronic tags still exist in the read-write equipment when the read-write equipment identifies the feedback signals is reduced, the possibility that the read-write equipment fails to identify the electronic tag is reduced, and the identification accuracy and speed of the read-write equipment are also increased.
Drawings
The above features, technical features, advantages and implementation of an electronic tag identification method and system will be further described in the following detailed description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of an RFID method of the present invention;
FIG. 2 is a schematic flow chart of another RFID method of the present invention;
fig. 3 is a schematic flow chart of step S32 in another electronic tag identification method according to the present invention;
FIG. 4 is a schematic diagram of the state of the electronic tag changing with time in another electronic tag identification method according to the present invention;
FIG. 5 is a schematic flow chart of another RFID method of the present invention;
FIG. 6 is a schematic diagram of a state of an electronic tag changing with time in another electronic tag identification method according to the present invention;
FIG. 7 is a schematic flow chart of another RFID method of the present invention;
FIG. 8 is a schematic diagram of the state of an electronic tag changing with time in another electronic tag identification method according to the present invention;
FIG. 9 is a schematic diagram of an electronic tag identification system according to the present invention;
FIG. 10 is a schematic structural diagram of a status change module in an RFID system according to the present invention;
FIG. 11 is a schematic structural diagram of a first state changing unit in an RFID system according to the present invention;
FIG. 12 is a schematic structural diagram of a first state changing unit in an RFID system according to the present invention;
fig. 13 is a schematic structural diagram of an identification module in an electronic tag identification system according to the present invention.
The reference numbers illustrate: 10. the system comprises a read-write device, 11 a device signal module, 12 an identification module, 121 a feedback analysis unit, 122 an identification unit, 20 an electronic tag, 21 a tag signal module, 22 a state change module, 221 a mode acquisition unit, 222 a first state change unit, 2221 a change analysis subunit, 2222 a first change subunit, 2223 a time acquisition subunit, 2224 a time analysis subunit, 223 a second state change unit, 2231 a state analysis subunit, 2232 a second change subunit, 2233 a disengagement analysis subunit.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
According to an embodiment provided by the present invention, as shown in fig. 1, an electronic tag identification method includes:
and S1, the read-write equipment sends an identification signal.
The read-write device mainly refers to an RFID reader, and the identification signal in this embodiment mainly refers to specific radio wave energy emitted by the RFID reader.
And S2, when the electronic tag enters the identification area of the read-write equipment, the electronic tag continuously receives the identification signal.
The electronic tag mainly refers to an RFID tag, the identification area mainly refers to an effective identification area of the reading and writing device, the electronic tag can receive radio wave energy with sufficient intensity, namely, an identification signal in the embodiment, only within a certain range of the reading and writing device, and the electronic tag can continuously receive the identification signal after entering the identification area.
And S3, the electronic tag changes the state of the electronic tag according to the identification signal and sends a feedback signal when the electronic tag is in the first state.
The identification signal contains the basis for changing the state of the electronic tag, when the electronic tag receives the identification signal, the electronic tag can send a feedback signal in the first state for the identification of the read-write equipment, and meanwhile, the electronic tag can change the state of the electronic tag adaptively.
And S4, when the read-write equipment receives the feedback signal, the read-write equipment identifies the feedback signal.
In this embodiment, the electronic tag includes at least two states, namely a first state and a second state, which mainly refer to a high level state and a low level state of the electronic tag, and both the two states can be used as the first state in this application, and the first state mainly refers to the high level state in this application.
When the read-write equipment receives the feedback signal, the read-write equipment can identify the feedback signal and can be used as a basis for identifying the electronic tag in the first state, the read-write equipment can successfully identify the electronic tag without identifying the electronic tag in the second state, and therefore, even if the electronic tag in the second state can send a corresponding signal, the read-write equipment can identify the signal sent by the electronic tag in the state.
In this embodiment, the electronic tag can send the feedback signal in the first state, and the read-write device can receive the feedback signal and serve as a basis for identifying the electronic tag in the first state, so that the number of feedback signals received by the read-write device from a single electronic tag is reduced, and the identification efficiency of the read-write device is increased.
Because the feedback signal of a single electronic tag is reduced, the possibility that the feedback signals of other electronic tags still exist in the read-write equipment when the read-write equipment identifies the feedback signal is reduced, the possibility that the read-write equipment fails to identify the electronic tag is reduced, and the identification accuracy of the read-write equipment is improved.
In this embodiment, before the electronic tag in the linen is used, an initialization process needs to be performed, and corresponding tag information is written. Meanwhile, before the read-write operation is performed, some global parameter settings, such as the adjustment of a tag search mode, a tag corresponding mode, the reading power and a frequency band, need to be performed on the read-write device, and the above parameters can be adjusted according to the local actual conditions and can be adjusted again according to the use process of the linen.
When the electronic tag is identified and a plurality of antennas exist in the read-write equipment, a user can close other antennas according to the antenna with the optimal signal to obtain the optimal identification operation performance; when the user can also continuously adjust the working frequency band of the read-write equipment, the optimal working frequency band is obtained, and the electronic tag can conveniently receive the identification signal.
According to another embodiment provided by the present invention, as shown in fig. 2, an electronic tag identification method includes:
and S1, the read-write equipment sends an identification signal.
And S2, when the electronic tag enters the identification area of the read-write equipment, the electronic tag continuously receives the identification signal.
And S31, the electronic tag acquires a state change mode in the identification signal.
And S32, when the acquired state change mode is a continuous change mode, the electronic tag changes cyclically between the first state and the second state, and sends a feedback signal when the electronic tag is in the first state.
And S4, when the read-write equipment receives the feedback signal, the read-write equipment identifies the feedback signal.
In this embodiment, the identification signal at least includes a state change mode of the electronic tag, and when the state change mode acquired by the electronic tag is a continuous change mode, the electronic tag can be changed cyclically between the first state and the second state, that is, when the electronic tag enters the identification area of the read-write device, the electronic tag can continuously change the state.
Specifically, as shown in fig. 3, S32 specifically includes:
s321, when the acquired state change mode is a continuous change mode, the electronic tag continuously analyzes whether the state of the electronic tag changes. When the state of the electronic tag does not change, the electronic tag continuously detects and analyzes whether the state of the electronic tag changes.
And S322, when the state of the electronic tag is changed from the second state to the first state, the electronic tag sends a feedback signal.
And S323, changing the electronic tag from the first state to the second state.
S324, when the state of the electronic tag is changed from the first state to the second state, the electronic tag continuously acquires the time for maintaining the second state.
And S325, when the time for maintaining the second state of the electronic tag reaches the preset maintaining time, changing the electronic tag from the second state to the first state.
In this embodiment, after entering the identification area of the read-write device, the electronic tag can continuously detect whether the current state changes, and when detecting that the electronic tag changes to the first state, the electronic tag can send a feedback signal so that the read-write device identifies, and after sending the feedback signal, the electronic tag directly changes to the second state.
When the electronic tag detects that the state is changed into the second state, the electronic tag can maintain the second state for a preset maintaining time and then change into the first state again, and the change of the state changes along with the change of the state when the electronic tag is located in the identification area.
Referring to fig. 4, the time scale line on the left side of the dotted line represents that the electronic tag is located in the identification area, the time scale line on the right side of the dotted line represents that the electronic tag is located outside the identification area, the length of the bar indicates the time that the electronic tag lasts in the first state, the solid frame indicates the time that the electronic tag maintains in the first state, the blank frame indicates the time that the electronic tag lasts in the second state, i.e., the time indicated by t1, and the arrow indicates that the read-write device can identify the electronic tag in the current state.
After the electronic tag is changed from the second state to the first state, the electronic tag is directly changed into the second state after the feedback signal is sent, so that the duration of the solid frame is short, the length of the solid frame is increased for viewing, and the length ratio of the solid frame to the blank frame does not directly represent the time ratio of the electronic tag in the first state to the second state, and is only used for representing the state schematic diagram of the electronic tag in the identification domain.
When the electronic tag is located in the identification area and is in the first state, the electronic tag can be identified; the electronic tag can change cyclically between a first state and a second state; when the electronic tag is located in the identification area, the number of times that the electronic tag is in the first state may be one or more, and when the maintaining time of the second state, namely t1, reaches the preset maintaining time, the electronic tag can be changed from the second state to the first state; the preset maintaining time can be changed according to the requirements of the user, and is used for changing the times of the electronic self-tag being detected when the linen is located in the identification area in the linen management process.
When the electronic tag is separated from the identification area, the electronic tag can still receive the identification signal sent by the reading and writing device, so that the electronic tag can still control the change of the state of the electronic tag, but the intensity of the received identification signal is low, so that the reading and writing device can not identify the electronic tag any more.
According to another embodiment provided by the present invention, as shown in fig. 5, an electronic tag identification method includes:
and S1, the read-write equipment sends an identification signal.
And S2, when the electronic tag enters the identification area of the read-write equipment, the electronic tag continuously receives the identification signal.
And S31, the electronic tag acquires a state change mode in the identification signal.
And S331, when the acquired state change mode is a single change mode, the electronic tag analyzes whether the state of the electronic tag is a first state.
S332, when the state of the electronic tag is not analyzed to be the first state, the electronic tag is changed from the second state to the first state.
And S333, when the state of the electronic tag is analyzed to be the first state, the electronic tag sends a feedback signal.
And S334, changing the electronic tag from the first state to the second state.
And S4, when the read-write equipment receives the feedback signal, the read-write equipment identifies the feedback signal.
When the electronic tag enters the identification area, the state change mode can be acquired, when the state change mode is acquired as a single change mode, the electronic tag can be firstly changed into a first state, a feedback signal is sent for the read-write equipment to identify, and then the electronic tag is changed into a second state, and the second state can be maintained until the electronic tag is separated from the identification area.
Preferably, step S334 is followed by:
and S335, when the electronic tag is separated from the identification area, the electronic tag analyzes whether the time for separating from the identification area is greater than preset separation time.
And S336, when the time of separating from the identification area is longer than the preset separation time, the electronic tag is changed from the second state to the first state.
After the electronic tag is separated from the identification area, the electronic tag is in the second state and can maintain the preset separation time, the electronic tag is prevented from entering the identification area again, the possibility of error identification of the electronic tag is reduced, and the identification accuracy of the reading and writing equipment is improved.
Meanwhile, after the electronic tag is changed to the first state again, the reading and writing device can recognize the electronic tag in the first state in the next reading and writing process, the electronic tag does not need to be changed from the second state to the first state, and the reading and writing efficiency of the reading and writing device is improved.
With reference to fig. 6, after the electronic tag enters the identification area, the electronic tag can be directly in the first state, and is identified by the read-write device, and then changed to the second state until the electronic tag is separated from the identification area, and after the electronic tag is separated from the identification area, the electronic tag can detect the time t2 when the electronic tag is separated from the identification area, and when the time t2 reaches the pre-separation time, the state of the electronic tag can be changed from the second state to the first state; the preset detachment time can also be changed according to the user's needs, and is preferably set to 2s to 60 s.
According to still another embodiment provided by the present invention, as shown in fig. 7, an electronic tag identification method includes:
and S1, the read-write equipment sends an identification signal.
And S2, when the electronic tag enters the identification area of the read-write equipment, the electronic tag continuously receives the identification signal.
And S3, the electronic tag changes the state of the electronic tag according to the identification signal and sends a feedback signal when the electronic tag is in the first state.
And S41, when the read-write equipment receives the feedback signal, the read-write equipment analyzes whether the same feedback signal is received in a preset scanning time period.
And S42, when the same feedback signal is not received in the preset scanning time period, the read-write equipment identifies the feedback signal.
In this embodiment, by screening out the repeated feedback signals, the feedback signals of the single electronic tag identified and recorded by the read-write device in the identification area are further reduced, so that the possibility that the feedback signals of the other electronic tags still exist in the read-write device when the read-write device identifies the feedback signals is reduced, the possibility that the read-write device fails to identify the electronic tag is reduced, and the identification accuracy and speed of the read-write device are also increased.
In this embodiment, the setting of the preset time period is mainly used to determine whether the received feedback signals are continuous, the read-write device can no longer record the same feedback signals in the same time period, and different electronic tags can send different feedback signals, so that the read-write device can only recognize the electronic tags once when continuously obtaining the recognition signals, and does not need to recognize the electronic tags many times. In addition, the preset scanning time in the embodiment can be changed according to the needs of the user.
As shown in fig. 8, the present embodiment is applied to the second method embodiment, although the state of the electronic tag is still changed and is not changed, when the electronic tag is located in the identification area, the electronic tag can be identified by the read/write device only when the electronic tag sends the feedback signal for the first time, and then the sent feedback signal can be received by the read/write device, but the read/write device does not perform identification and recording after receiving the feedback signal.
According to an embodiment provided by the present invention, as shown in fig. 9, an electronic tag 20 identification system includes a read-write device 10 and an electronic tag 20, where the read-write device 10 includes a device signal module 11 and an identification module 12, and the electronic tag 20 includes a tag signal module 21 and a state change module 22.
The device signal module 11 is configured to send an identification signal.
When the electronic tag 20 enters the identification area of the read-write device 10, the tag signal module 21 continuously receives the identification signal.
The state changing module 22 changes the state of the electronic tag 20 according to the identification signal.
When the electronic tag 20 is in the first state, the tag signal module 21 sends a feedback signal.
When the device signal module 11 receives the feedback signal, the identification module 12 identifies the electronic tag 20 in the first state.
The reader/writer 10 mainly refers to an RFID reader, and the identification signal in this embodiment mainly refers to specific radio wave energy emitted by the RFID reader.
The electronic tag 20 mainly refers to an RFID tag, the identification area mainly refers to an effective identification area of the reader/writer 10, the electronic tag 20 can receive radio wave energy with sufficient intensity, i.e. an identification signal in the present embodiment, only within a certain range of the reader/writer 10, and after the electronic tag 20 enters the identification area, the electronic tag 20 can continuously receive the identification signal.
The identification signal includes a basis for changing the state of the electronic tag 20, when the electronic tag 20 receives the identification signal, it can send a feedback signal in the first state for the read/write device 10 to identify, and at the same time, the electronic tag 20 can adaptively change its state.
In the present embodiment, the electronic tag 20 includes at least two states, namely a first state and a second state, which mainly refer to a high state and a low state of the electronic tag 20, and both the two states can be regarded as the first state in the present application, and the first state mainly refers to the high state in the present application.
When the read-write device 10 receives the feedback signal, the read-write device 10 can recognize the feedback signal, and as a basis for recognizing the electronic tag 20 in the first state, the read-write device 10 can successfully recognize the electronic tag 20 without recognizing the electronic tag 20 in the second state, so that even if the electronic tag 20 in the second state can transmit a corresponding signal, the read-write device can recognize the signal transmitted by the electronic tag 20 in the above state.
In this embodiment, the electronic tag 20 can send a feedback signal in the first state, and the read-write device 10 can receive the feedback signal and serve as a basis for identifying the electronic tag 20 in the first state, so that the number of feedback signals received by the read-write device 10 by a single electronic tag 20 is reduced, and the identification efficiency of the read-write device 10 is increased.
Because the feedback signal of a single electronic tag 20 is reduced, the possibility that the feedback signals of the other electronic tags 20 still exist in the read-write device 10 when the read-write device 10 identifies the feedback signal is reduced, the possibility that the read-write device 10 fails to identify the electronic tag 20 is reduced, and the identification accuracy of the read-write device 10 is improved.
In this embodiment, before the electronic tag 20 in the linen is used, an initialization process needs to be performed, and corresponding tag information is written. Meanwhile, before performing the read-write operation, some global parameter settings, such as the adjustment of the tag search mode, the tag correspondence mode, the read power and the frequency band, need to be performed on the read-write device 10, and the above parameters can be adjusted according to the local actual conditions and can be adjusted again according to the use process of the linen.
When the electronic tag 20 is identified and a plurality of antennas exist in the read-write device 10, the user can also close the other antennas according to the antenna with the optimal signal to obtain the optimal identification operation performance; when the user can also continuously adjust the operating frequency band of the reader/writer device 10 to obtain the optimal operating frequency band, the electronic tag 20 can receive the identification signal conveniently.
According to another embodiment provided by the present invention, as shown in fig. 9 to 11, an identification system of an electronic tag 20 includes a read-write device 10 and the electronic tag 20, where the read-write device 10 includes a device signal module 11 and an identification module 12, and the electronic tag 20 includes a tag signal module 21 and a state change module 22.
The device signal module 11 is configured to send an identification signal.
When the electronic tag 20 enters the identification area of the read-write device 10, the tag signal module 21 continuously receives the identification signal.
The state changing module 22 changes the state of the electronic tag 20 according to the identification signal.
When the electronic tag 20 is in the first state, the tag signal module 21 sends a feedback signal.
When the device signal module 11 receives the feedback signal, the identification module 12 identifies the electronic tag 20 in the first state.
The state change module 22 includes:
a mode acquiring unit 221, configured to acquire a state change mode in the identification signal.
A first state changing unit 222, configured to control the electronic tag 20 to change cyclically between the first state and the second state when the state changing manner acquired by the manner acquiring unit 221 is a continuous changing manner.
The tag signal module 21 sends a feedback signal when the electronic tag 20 is in the first state.
The first state changing unit 222 includes:
the change analysis subunit 2221, when the state change manner acquired by the manner acquisition unit 221 is a continuous change manner, continuously analyzes whether the state of the change analysis subunit 2221 changes.
When the change analysis subunit 2221 analyzes that the state of the electronic tag 20 is changed from the second state to the first state, the tag signal module 21 sends a feedback signal.
A first change subunit 2222, where the first change subunit 2222 controls the electronic tag 20 to change from the first state to the second state.
The time acquiring subunit 2223, when the state analyzing subunit 2231 analyzes that the state of the electronic tag 20 is changed from the first state to the second state, is configured to acquire the time for the electronic tag 20 to continuously maintain the second state.
The time analysis subunit 2224 is configured to analyze whether the time for the electronic tag 20 to maintain the second state reaches a preset maintenance time.
When the time for the electronic tag 20 to maintain the second state reaches the preset maintaining time, the first changing subunit 2222 controls the electronic tag 20 to change from the second state to the first state.
In this embodiment, the identification signal at least includes a state change mode of the electronic tag 20, and when the electronic tag 20 acquires that the state change mode is a continuous change mode, the electronic tag 20 can change cyclically between the first state and the second state, that is, when the electronic tag 20 enters the identification area of the read/write device 10, the electronic tag 20 can continuously change states.
In this embodiment, after the electronic tag 20 enters the identification area of the read-write device 10, the electronic tag 20 can continuously detect whether the current state changes, and when it is detected that the electronic tag 20 changes to the first state, the electronic tag 20 can send a feedback signal so that the read-write device 10 identifies, and after sending the feedback signal, the electronic tag is directly changed to the second state.
When the electronic tag 20 detects that the state is changed to the second state, the electronic tag 20 can maintain the second state for a preset maintaining time and then change to the first state again, and the change of the state is cyclically changed when the electronic tag 20 is located in the identification area.
Referring to fig. 4, the time scale line on the left side of the dotted line represents that the electronic tag 20 is located in the identification area, the time scale line on the right side of the dotted line represents that the electronic tag 20 is located outside the identification area, the length of the bar indicates the time that the electronic tag 20 lasts in the first state, the solid frame indicates the time that the electronic tag 20 maintains in the first state, the blank frame indicates the time that the electronic tag 20 lasts in the second state, i.e., the time indicated by t1, and the arrow indicates that the read-write device 10 can identify the electronic tag 20 in the current state.
After the electronic tag 20 is changed from the second state to the first state, and after the feedback signal is sent, the electronic tag is directly changed to the second state, so that the duration of the solid frame is short, and the length of the solid frame is increased for viewing.
When the electronic tag 20 is located in the identification area and the electronic tag 20 is in the first state, the electronic tag 20 can be identified; the electronic tag 20 is capable of cycling between a first state and a second state; when the electronic tag 20 is located in the identification area, the number of times that the electronic tag 20 is in the first state may be one or more, and when the maintaining time of the second state, i.e. t1, reaches the preset maintaining time, the electronic tag 20 can be changed from the second state to the first state; the preset maintaining time can be changed according to the requirements of the user, and is used for changing the times of the electronic self-tag being detected when the linen is located in the identification area in the linen management process.
When the electronic tag 20 leaves the identification area, the electronic tag 20 can still receive the identification signal sent by the read-write device 10, and therefore, the electronic tag 20 can still control the change of the state thereof, but because the strength of the received identification signal is small, the read-write device 10 can no longer identify the electronic tag 20.
According to another embodiment provided by the present invention, as shown in fig. 9, fig. 10 and fig. 12, an identification system of an electronic tag 20 includes a read-write device 10 and the electronic tag 20, where the read-write device 10 includes a device signal module 11 and an identification module 12, and the electronic tag 20 includes a tag signal module 21 and a state change module 22.
The device signal module 11 is configured to send an identification signal.
When the electronic tag 20 enters the identification area of the read-write device 10, the tag signal module 21 continuously receives the identification signal.
The state changing module 22 changes the state of the electronic tag 20 according to the identification signal.
When the electronic tag 20 is in the first state, the tag signal module 21 sends a feedback signal.
When the device signal module 11 receives the feedback signal, the identification module 12 identifies the electronic tag 20 in the first state.
The state change module 22 includes a second state change unit 223, and the second state change unit 223 includes:
the state analyzing subunit 2231 is configured to, when the state change manner acquired by the manner acquiring unit 221 is a single change manner, analyze whether the state of the electronic tag 20 is the first state.
A second changing subunit 2232, where when the state analyzing subunit 2231 analyzes that the state of the electronic tag 20 is not the first state, the second changing subunit 2232 controls the electronic tag 20 to change from the second state to the first state.
When the state analyzing subunit 2231 analyzes that the state of the electronic tag 20 is the first state, the tag signal module 21 sends a feedback signal.
The second changing subunit 2232 controls the electronic tag 20 to change from the first state to the second state.
The second state changing unit 223 further includes:
a detachment analysis subunit 2233, configured to analyze whether a time for detaching the identification area is greater than a preset detachment time when the electronic tag 20 detaches from the identification area.
When the time of leaving the identification area is greater than the preset leaving time, the second changing subunit 2232 controls the electronic tag 20 to change from the second state to the first state.
When the electronic tag 20 enters the identification area, the state change mode can be acquired, and when the acquired state change mode is a single change mode, the electronic tag 20 can be changed to the first state first, send a feedback signal for the read-write device 10 to identify, and then change to the second state, and the second state can be maintained until the electronic tag 20 is separated from the identification area.
After the electronic tag 20 is separated from the identification area, the electronic tag 20 in the second state can also maintain the preset separation time, so that the electronic tag 20 is prevented from entering the identification area again, the possibility of error identification of the electronic tag 20 is reduced, and the identification accuracy of the reading and writing device 10 is improved.
Meanwhile, after the electronic tag 20 is changed to the first state again, the read-write device 10 can recognize the electronic tag 20 in the first state in the next read-write process, and the electronic tag 20 does not need to be changed from the second state to the first state, so that the read-write efficiency of the read-write device 10 is improved.
Referring to fig. 6, after the electronic tag 20 enters the identification area, the electronic tag 20 can be directly in the first state, and is identified by the read-write device 10, and then changed to the second state until the electronic tag 20 is separated from the identification area, and after the electronic tag 20 is separated from the identification area, the electronic tag 20 can detect the time t2 when the electronic tag 20 is separated from the identification area, and when the time t2 reaches the pre-separation time, the state of the electronic tag 20 can be changed from the second state to the first state; the preset detachment time can also be changed according to the user's needs, and is preferably set to 2s to 60 s.
According to still another embodiment of the present invention, as shown in fig. 9 and fig. 13, an identification system of an electronic tag 20 includes a read-write device 10 and the electronic tag 20, where the read-write device 10 includes a device signal module 11 and an identification module 12, and the electronic tag 20 includes a tag signal module 21 and a state change module 22.
The device signal module 11 is configured to send an identification signal.
When the electronic tag 20 enters the identification area of the read-write device 10, the tag signal module 21 continuously receives the identification signal.
The state changing module 22 changes the state of the electronic tag 20 according to the identification signal.
When the electronic tag 20 is in the first state, the tag signal module 21 sends a feedback signal.
When the device signal module 11 receives the feedback signal, the identification module 12 identifies the electronic tag 20 in the first state.
The identification module 12 comprises:
a feedback analysis unit 121, configured to analyze whether the same feedback signal is received within a preset scanning time period when the device signal module 11 receives the feedback signal.
An identifying unit 122, wherein when the same feedback signal is not received within a preset scanning time period, the identifying unit 122 identifies the feedback signal.
In this embodiment, by screening out the repeated feedback signals, the feedback signals of the single electronic tag 20 in the identification area, which are identified and recorded by the read-write device 10, are further reduced, so that the possibility that the feedback signals of the other electronic tags 20 still exist in the read-write device 10 when the read-write device 10 identifies the feedback signals is reduced, the possibility that the read-write device 10 fails to identify the electronic tag 20 is reduced, and the identification accuracy and speed of the read-write device 10 are also increased.
In this embodiment, the setting of the preset time period is mainly used to determine whether the received feedback signals are continuous, the read-write device 10 can no longer record the same feedback signals in the same time period, and different electronic tags 20 can send different feedback signals, so that the read-write device 10 can only recognize the electronic tags 20 once when continuously obtaining the identification signals, and does not need to recognize the electronic tags many times. In addition, the preset scanning time in the embodiment can be changed according to the needs of the user.
Referring to fig. 8, the present embodiment is applied to the second apparatus embodiment, although the state of the electronic tag 20 is still changed, when the electronic tag 20 is located in the identification area, the electronic tag 20 can be identified by the read/write device 10 only when sending the feedback signal for the first time, and the read/write device 10 can receive the feedback signal sent later, but does not perform identification and recording after receiving the feedback signal.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An electronic tag identification method, comprising:
the read-write equipment sends an identification signal;
when the electronic tag enters the identification area of the read-write equipment, the electronic tag continuously receives an identification signal;
the electronic tag changes the state of the electronic tag according to the identification signal and sends a feedback signal when the electronic tag is in a first state; the method specifically comprises the following steps:
the electronic tag acquires a state change mode in the identification signal;
after the electronic tag acquires the state change mode in the identification signal, the method further comprises the following steps:
when the acquired state change mode is a single change mode, the electronic tag analyzes whether the state of the electronic tag is a first state;
when the state of the electronic tag is not analyzed to be the first state, the electronic tag is changed from the second state to the first state;
when the state of the electronic tag is analyzed to be a first state, the electronic tag sends a feedback signal;
the electronic tag is changed from a first state to a second state;
after the electronic tag is changed from the first state to the second state, the method further comprises the following steps:
when the electronic tag is separated from the identification area, the electronic tag analyzes whether the time for separating from the identification area is greater than preset separation time;
when the time of separating from the identification area is longer than the preset separation time, the electronic tag is changed from the second state to the first state;
and when the read-write equipment receives the feedback signal, the read-write equipment identifies the feedback signal.
2. The method as claimed in claim 1, further comprising, after the electronic tag obtains the status change pattern in the identification signal:
and when the acquired state change mode is a continuous change mode, the electronic tag changes cyclically between the first state and the second state, and sends a feedback signal when the electronic tag is in the first state.
3. The method according to claim 2, wherein when the acquired state change mode is a continuous change mode, the electronic tag changes cyclically between the first state and the second state, and the sending the feedback signal when the electronic tag is in the first state specifically includes:
when the acquired state change mode is a continuous change mode, the electronic tag continuously analyzes whether the state of the electronic tag changes or not;
when the state of the electronic tag is changed from the second state to the first state, the electronic tag sends a feedback signal;
the electronic tag is changed from a first state to a second state;
when the state of the electronic tag is changed from a first state to a second state, the electronic tag continuously acquires the time for maintaining the second state;
and when the time for maintaining the second state of the electronic tag reaches the preset maintaining time, the electronic tag is changed from the second state to the first state.
4. The method according to claim 1, wherein when the read-write device receives the feedback signal, the identifying, by the read-write device, the feedback signal specifically includes:
when the read-write equipment receives the feedback signal, the read-write equipment analyzes whether the same feedback signal is received within a preset scanning time period;
and when the same feedback signal is not received in a preset scanning time period, the read-write equipment identifies the feedback signal.
5. An electronic tag identification system is characterized by comprising a read-write device and an electronic tag, wherein the read-write device comprises a device signal module and an identification module, and the electronic tag comprises a tag signal module and a state change module;
the equipment signal module is used for sending an identification signal;
when the electronic tag enters the identification area of the read-write equipment, the tag signal module continuously receives the identification signal;
the state changing module changes the state of the electronic tag according to the identification signal;
when the electronic tag is in a first state, the tag signal module sends a feedback signal;
the state change module comprises a mode acquisition unit for acquiring the state change mode in the identification signal;
the state change module includes a first state change unit and a second state change unit, the second state change unit includes:
the state analysis subunit is used for analyzing whether the state of the electronic tag is a first state or not when the state change mode acquired by the mode acquisition unit is a single change mode;
the second change subunit controls the electronic tag to change from the second state to the first state when the state analysis subunit analyzes that the state of the electronic tag is not the first state;
when the state analysis subunit analyzes that the state of the electronic tag is a first state, the tag signal module sends a feedback signal;
the second change subunit controls the electronic tag to change from a first state to a second state;
the second state changing unit further includes:
a separation analysis subunit, configured to analyze whether a time for separating from the identification area is greater than a preset separation time when the electronic tag separates from the identification area;
when the time of separating from the identification area is longer than the preset separation time, the second change subunit controls the electronic tag to change from the second state to the first state;
when the equipment signal module receives the feedback signal, the identification module identifies the electronic tag in a first state.
6. The system according to claim 5, wherein the status change module comprises:
the first state changing unit controls the electronic tag to change cyclically between a first state and a second state when the state changing mode acquired by the mode acquiring unit is a continuous changing mode;
the tag signal module sends a feedback signal when the electronic tag is in a first state.
7. The electronic tag identification system according to claim 6, wherein the first state changing unit comprises:
the change analysis subunit continuously analyzes whether the state of the change analysis subunit is changed or not when the state change mode acquired by the mode acquisition unit is a continuous change mode;
when the change analysis subunit analyzes that the state of the electronic tag is changed from the second state to the first state, the tag signal module sends a feedback signal;
the first change subunit controls the electronic tag to change from a first state to a second state;
the time acquisition subunit is used for acquiring the time for the electronic tag to continuously maintain the second state when the state analysis subunit analyzes that the state of the electronic tag is changed from the first state to the second state;
the time analysis subunit is used for analyzing whether the time for maintaining the second state of the electronic tag reaches the preset maintaining time or not;
when the time for maintaining the second state of the electronic tag reaches the preset maintaining time, the first changing subunit controls the electronic tag to change from the second state to the first state.
8. An electronic label identification system according to claim 5, wherein the identification module comprises:
the feedback analysis unit is used for analyzing whether the same feedback signal is received in a preset scanning time period or not when the equipment signal module receives the feedback signal;
and the identification unit identifies the feedback signal when the same feedback signal is not received in a preset scanning time period.
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| CN102073837A (en) * | 2009-11-23 | 2011-05-25 | 天津中兴软件有限责任公司 | Device and method for realizing label counting in radio frequency identifying system |
| CN103699910A (en) * | 2013-10-22 | 2014-04-02 | 北京邮电大学 | Method and device for discriminating existing state variation of RFID (radio frequency identification device) label inside RFID card reader |
| CN107358278A (en) * | 2017-07-13 | 2017-11-17 | 四川长虹技佳精工有限公司 | RFID intelligence vending machine label checking methods |
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| CN102073837A (en) * | 2009-11-23 | 2011-05-25 | 天津中兴软件有限责任公司 | Device and method for realizing label counting in radio frequency identifying system |
| CN103699910A (en) * | 2013-10-22 | 2014-04-02 | 北京邮电大学 | Method and device for discriminating existing state variation of RFID (radio frequency identification device) label inside RFID card reader |
| CN107358278A (en) * | 2017-07-13 | 2017-11-17 | 四川长虹技佳精工有限公司 | RFID intelligence vending machine label checking methods |
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