CN116506530A - Multi-protocol RFID reader-writer with low error rate - Google Patents
Multi-protocol RFID reader-writer with low error rate Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- 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
- G06K7/10237—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 the reader and the record carrier being capable of selectively switching between reader and record carrier appearance, e.g. in near field communication [NFC] devices where the NFC device may function as an RFID reader or as an RFID tag
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a multi-protocol RFID reader-writer with low error rate, which relates to the field of RFID reading and writing and comprises the following components: the display module is used for carrying out output display of the client; the multi-protocol RFID reader-writer with low error rate is characterized in that whether an RFID protocol group is matched with a protocol selection requirement is judged, if the judgment result is yes, an RFID protocol queue is output to an RFID protocol unpacking module, the RFID protocol unpacking module unpacks the RFID protocol queue, the unpacked RFID protocol group is subjected to protocol interaction queue scheduling through an RFID protocol interaction scheduling module, the interacted RFID protocol group signals are detected through an RFID signal detection unit, and the detection result is transmitted to a display module to be displayed at a client, wherein various protocols can be converted into the same type of protocols through the RFID protocol interaction module, the error code is prevented from being generated due to interference when the RFID protocols of different types are read and written, and meanwhile, the RFID protocol interaction scheduling module can ensure the read-write speed of the RFID protocols when the RFID protocols are read and written.
Description
Technical Field
The invention relates to an RFID read-write technology, in particular to a multi-protocol RFID read-write device with low error rate.
Background
The radio frequency identification technology (Radio Frequency Identification, RFID) is one of automatic identification technologies, namely, the target is identified by non-contact two-way data communication in a wireless radio frequency mode, has the characteristics of rapidness, accuracy and reliability, and can be widely applied to the application fields of production, logistics, transportation, medical treatment, anti-counterfeiting, tracking, equipment, asset management and the like, wherein the application fields need to collect and process data.
The RFID technology principle is that the data exchange is carried out by utilizing the characteristics of radio frequency signals and space coupling transmission, so that the automatic identification of objects is realized. Compared with the traditional contact recognition technology such as bar codes, magnetic card ICs and the like, the method has the greatest characteristic that the recognition can be completed without physical contact, so that the method is widely applied to multi-target recognition and moving target recognition.
When the existing RFID reader-writer is used, the RFID protocol is read and written, and a plurality of protocols exist for synchronous reading and writing, and most of the existing multi-protocol RFID reader-writer is input through multi-protocol synchronization, so that when the multi-protocol RFID reader-writer is used, error codes are generated due to interference generated when different types of RFID protocols are used for reading and writing, and meanwhile, progress interference is generated when the RFID protocols are used for reading and writing, and therefore the RFID reading and writing time is long.
Disclosure of Invention
The invention aims to provide a multi-protocol RFID reader-writer with low error rate, which solves the problems that in the prior art, different types of RFID protocols generate interference when reading and writing, so that the error code is generated, and meanwhile, the RFID protocols generate progress interference when reading and writing, so that the RFID reading and writing time is longer.
In order to achieve the above object, the present invention provides the following technical solutions: a low bit error rate multi-protocol RFID reader comprising:
the display module is used for carrying out output display of the client;
the RFID protocol input module is used for inputting an RFID protocol group which accords with the use condition of the current RFID reader-writer by a user and transmitting the RFID protocol group which accords with the use condition of the current RFID reader-writer to the RFID protocol selection module;
the RFID protocol selection module receives an RFID protocol group meeting the use condition of the current RFID reader-writer and a protocol selection requirement of the current RFID reader-writer, which are sent by the RFID protocol input module, and performs RFID protocol selection on the RFID protocol group according to the protocol selection requirement, wherein the protocol selection requirement comprises an RFID protocol writing speed, an RFID protocol reading speed and RFID protocol interaction efficiency;
the RFID protocol interaction module is used for interacting the RFID protocol queue sent by the RFID protocol selection module into an RFID protocol queue usable by the current RFID reader-writer and sending the RFID protocol queue to the RFID protocol unpacking module;
the RFID protocol unpacking module is used for converting the RFID protocol queues sent by the RFID protocol interaction module into 64bit data, packet headers and control signals and sending the 64bit data, packet headers and control signals to the RFID protocol interaction scheduling module;
the RFID protocol interaction scheduling module is used for scheduling the protocol interaction queue when the RFID protocol interaction module performs protocol interaction;
the timing unit is used for performing timing operation of RFID protocol interaction;
and the RFID signal detection unit is used for detecting the RFID signals with completed interaction and transmitting error signals to the display module.
Further, the RFID protocol selection module includes:
the protocol selection requirement input module is used for manually inputting the protocol selection requirement of the RFID reader-writer;
the result matching module is used for receiving the RFID protocol group which is sent by the RFID protocol input module and accords with the use condition of the current RFID reader-writer, and carrying out result matching on the RFID protocol group and the protocol selection requirement input by the protocol selection requirement input module, wherein the same RFID protocol is sent to the result comparison module, and the RFID protocols with different result matching are discarded;
the result comparison module is used for receiving the RFID protocol sent by the result matching module and carrying out RFID protocol comparison, wherein the RFID protocol comparison comprises RFID protocol writing speed comparison and RFID protocol reading speed comparison;
and the result output module is used for receiving the RFID protocol sent by the result comparison module and transmitting the RFID protocol to the display module for client display.
Further, the RFID protocol interaction module comprises an SRIO data input end, an SRIO data output end and a 2-path multi-protocol transmission channel output end, and the RFID protocol interaction module further comprises;
the verification module is used for ensuring the correctness of the forwarded data packet format and protecting the data from being occupied by the error data packet, so that the effective utilization rate of the data bus is improved;
the multicast control module is used for adding a corresponding decoding and copying module in the switching equipment and converting the data packet with the multicast ID into data packets with a plurality of unicast IDs;
the switching structure module can identify the data packet sent to the SRIO node and the data packet sent to other protocol devices, and the data packets enter the switching structure together to be scheduled and forwarded
The transmission buffer module is used for buffering the data packet to be forwarded and matching the port rate, and the buffer structure of the transmission buffer module comprises an input buffer and an output buffer;
the flow control module is used for preventing packet loss caused by high-bandwidth to low-bandwidth conversion, and the flow control mode comprises buffering, back pressure and throttling;
and the routing table module is used for storing the routing configuration information and reserving virtual node IDs for other high-speed protocol equipment, wherein the routing table represents the corresponding relation between ports and the node IDs and controls the flow direction of data packets in the system.
The main control module is used for controlling and monitoring various modules in the system, and is used for realizing configuration of a routing table, detection and recovery of abnormal states of the system and outputting statistical data of various ports.
Further, the specific working method of the RFID protocol interaction scheduling module is as follows:
s1, receiving an RFID protocol queue with conversion completed;
s2, acquiring packet header information of each RFID protocol in the queue;
s3, updating the virtual time of RFID protocol interaction;
s4, judging whether the current RFID protocol is a real-time service flow or not;
s5, if the judgment result of the step S4 is negative, judging whether the current bandwidth is sufficient, and if the judgment result of the step S4 is positive, distributing the bandwidth according to the weight requirement;
s6, if the bandwidth judgment result in the step S5 is insufficient, the residual bandwidth is allocated according to the weight proportion, and if the bandwidth judgment result in the step S5 is sufficient, the bandwidth is allocated according to the weight requirement;
s7, calculating RFID protocol interaction virtual time;
s8, selecting the packet with the smallest virtual completion time for scheduling.
Further, the timing unit includes:
a timer for setting the running time of the RFID reader-writer;
the timer interrupt control module is used for performing interrupt operation of the RFID reader-writer when the running time of the RFID reader-writer is set by the timer;
and the counter is used for counting the number of successful reading and writing times in the running time of the RFID reader-writer.
Further, the working method of the RFID reader-writer is as follows;
a1, a user inputs an RFID protocol group conforming to the use condition of the current RFID reader-writer through an RFID protocol input module
A2, inputting the protocol selection requirement of the current RFID reader-writer through the RFID protocol selection module
A3, judging whether the RFID protocol group matches with the protocol selection requirement
A4, if the judgment result is yes, outputting the RFID protocol queue to the RFID protocol unpacking module
A5, the RFID protocol unpacking module unpacks the RFID protocol queue,
a6, the unpacked RFID protocol group performs protocol interaction queue scheduling through the RFID protocol interaction scheduling module
A7, detecting the interacted RFID protocol group signal through an RFID signal detection unit,
a8, transmitting the detection result to a display module for client display.
Compared with the prior art, the multi-protocol RFID reader-writer with low error rate is provided by the invention, whether the RFID protocol group is matched with a protocol selection requirement is judged, if yes, an RFID protocol queue is output to an RFID protocol unpacking module, the RFID protocol unpacking module unpacks the RFID protocol queue, the unpacked RFID protocol group is subjected to protocol interaction queue scheduling through an RFID protocol interaction scheduling module, the interacted RFID protocol group signals are detected through an RFID signal detection unit, and the detection result is transmitted to a display module for client side display, wherein the RFID protocol interaction module can convert multiple protocols into the same type of protocols, the generation of error codes caused by interference when reading and writing the different types of RFID protocols is avoided, and meanwhile, the RFID protocol interaction scheduling module can ensure the reading and writing speed when reading and writing the RFID protocols.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of an overall flow structure provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a workflow structure of the RFID protocol interactive scheduling module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an RFID protocol interaction module according to an embodiment of the present invention.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1-3, a multi-protocol RFID reader with low error rate includes:
the display module is used for carrying out output display of the client;
the RFID protocol input module is used for inputting an RFID protocol group which accords with the use condition of the current RFID reader-writer by a user and transmitting the RFID protocol group which accords with the use condition of the current RFID reader-writer to the RFID protocol selection module;
the RFID protocol selection module receives an RFID protocol group meeting the use condition of the current RFID reader-writer and a protocol selection requirement input to the current RFID reader-writer, and performs RFID protocol selection on the RFID protocol group according to the protocol selection requirement, wherein the protocol selection requirement comprises an RFID protocol writing speed, an RFID protocol reading speed and RFID protocol interaction efficiency;
the RFID protocol interaction module is used for interacting the RFID protocol queue sent by the RFID protocol selection module into an RFID protocol queue usable by the current RFID reader-writer and sending the RFID protocol queue to the RFID protocol unpacking module;
the RFID protocol unpacking module is used for converting the RFID protocol queues sent by the RFID protocol interaction module into 64bit data, packet headers and control signals and sending the 64bit data, packet headers and control signals to the RFID protocol interaction scheduling module;
the RFID protocol interaction scheduling module is used for scheduling the protocol interaction queue when the RFID protocol interaction module performs protocol interaction;
the timing unit is used for performing timing operation of RFID protocol interaction;
and the RFID signal detection unit is used for detecting the RFID signals with completed interaction and transmitting error signals to the display module.
The working method of the RFID reader-writer comprises the following steps:
the RFID protocol group meeting the use condition of the current RFID reader-writer is input by a user through the RFID protocol input module, the protocol selection requirement of the current RFID reader-writer is input through the RFID protocol selection module, whether the RFID protocol group is matched with the protocol selection requirement is judged, if yes, the RFID protocol queue is output to the RFID protocol unpacking module, unpacking processing is carried out on the RFID protocol queue by the RFID protocol unpacking module, protocol interaction queue scheduling is carried out on the unpacked RFID protocol group through the RFID protocol interaction scheduling module, the interacted RFID protocol group signals are detected through the RFID signal detection unit, the detection result is transmitted to the display module for client side display, multiple protocols can be converted into the same type of protocols through the RFID protocol interaction module, error codes caused by interference generated when the RFID protocols of different types are read and written are avoided, and meanwhile the read-write speed of the RFID protocols when the RFID protocols are read-written is guaranteed through the RFID protocol interaction scheduling module.
The RFID protocol selection module comprises:
the protocol selection requirement input module is used for manually inputting the protocol selection requirement of the RFID reader-writer;
the result matching module is used for receiving the RFID protocol group which is sent by the RFID protocol input module and accords with the use condition of the current RFID reader-writer, carrying out result matching on the RFID protocol group and the protocol selection requirement input by the protocol selection requirement input module, sending the same RFID protocol to the result comparison module, and discarding the RFID protocols with different result matching;
the result comparison module is used for receiving the RFID protocol sent by the result matching module and comparing the RFID protocol, wherein the RFID protocol comparison comprises RFID protocol writing speed comparison and RFID protocol reading speed comparison;
the result output module is used for receiving the RFID protocol sent by the result comparison module and transmitting the RFID protocol to the display module for display of the client.
The RFID protocol interaction module comprises an SRIO data input end, an SRIO data output end and a 2-path multi-protocol transmission channel output end, and also comprises;
the verification module is used for ensuring the correctness of the forwarded data packet format and protecting the data from being occupied by the error data packet, so that the effective utilization rate of the data bus is improved;
the multicast control module is used for adding a corresponding decoding and copying module in the switching equipment and converting the data packet with the multicast ID into data packets with a plurality of unicast IDs;
the switching structure module can identify the data packet sent to the SRIO node and the data packet sent to other protocol devices, and the data packets enter the switching structure together to be scheduled and forwarded
The transmission buffer module is used for buffering the data packet to be forwarded and matching the port rate, and the buffer structure of the transmission buffer module comprises an input buffer and an output buffer;
the flow control module is used for preventing packet loss caused by high-bandwidth to low-bandwidth conversion, and the flow control modes comprise buffering, back pressure and throttling;
and the routing table module is used for storing the routing configuration information, reserving virtual node IDs for other high-speed protocol equipment, and controlling the flow direction of data packets in the system.
The main control module is used for controlling and monitoring various modules in the system, and is used for realizing configuration of a routing table, detection and recovery of abnormal states of the system and outputting statistical data of various ports.
The specific working method of the RFID protocol interactive scheduling module is as follows:
s1, receiving an RFID protocol queue with conversion completed;
s2, acquiring packet header information of each RFID protocol in the queue;
s3, updating the virtual time of RFID protocol interaction;
s4, judging whether the current RFID protocol is a real-time service flow or not;
s5, if the judgment result of the step S4 is negative, judging whether the current bandwidth is sufficient, and if the judgment result of the step S4 is positive, distributing the bandwidth according to the weight requirement;
s6, if the bandwidth judgment result in the step S5 is insufficient, the residual bandwidth is allocated according to the weight proportion, and if the bandwidth judgment result in the step S5 is sufficient, the bandwidth is allocated according to the weight requirement;
s7, calculating RFID protocol interaction virtual time;
s8, selecting the packet with the smallest virtual completion time for scheduling.
The specific working method of the RFID protocol interactive scheduling module comprises the following steps: receiving the converted RFID protocol queues, acquiring packet header information of each RFID protocol in the queues, updating virtual time of RFID protocol interaction, judging whether the current RFID protocol is a real-time service flow, judging whether the current bandwidth is sufficient if the judgment result of the step S4 is negative, distributing the bandwidth according to the weight requirement if the judgment result of the step S4 is positive, distributing the residual bandwidth according to the weight proportion if the judgment result of the step S5 is insufficient, distributing the bandwidth according to the weight requirement if the judgment result of the step S5 is positive, calculating the RFID protocol interaction virtual time, and selecting the packet with the minimum virtual completion time for scheduling.
The timing unit includes:
a timer for setting the running time of the RFID reader-writer;
the timer interrupt control module is used for performing interrupt operation of the RFID reader-writer when the running time of the RFID reader-writer is set by the timer;
and the counter is used for counting the number of successful reading and writing times in the running time of the RFID reader-writer.
The running time of the RFID reader-writer can be set through the timer, the times of RFID protocol interaction in the running time of the RFID reader-writer can be obtained through dividing the running time of the RFID reader-writer by the virtual time of RFID protocol interaction, and the error rate of protocol interaction can be obtained through counting the times of successful reading and writing in the running time of the RFID reader-writer through the counter.
Working principle: when the RFID protocol unpacking module unpacks the RFID protocol queue, the unpacked RFID protocol group carries out protocol interaction queue scheduling through the RFID protocol interaction scheduling module, the interacted RFID protocol group signals are detected through the RFID signal detection unit, and the detection result is transmitted to the display module for client display.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (6)
1. A multi-protocol RFID reader with low bit error rate, comprising:
the display module is used for carrying out output display of the client;
the RFID protocol input module is used for inputting an RFID protocol group which accords with the use condition of the current RFID reader-writer by a user and transmitting the RFID protocol group which accords with the use condition of the current RFID reader-writer to the RFID protocol selection module;
the RFID protocol selection module receives an RFID protocol group meeting the use condition of the current RFID reader-writer and a protocol selection requirement of the current RFID reader-writer, which are sent by the RFID protocol input module, and performs RFID protocol selection on the RFID protocol group according to the protocol selection requirement, wherein the protocol selection requirement comprises an RFID protocol writing speed, an RFID protocol reading speed and RFID protocol interaction efficiency;
the RFID protocol interaction module is used for interacting the RFID protocol queue sent by the RFID protocol selection module into an RFID protocol queue usable by the current RFID reader-writer and sending the RFID protocol queue to the RFID protocol unpacking module;
the RFID protocol unpacking module is used for converting the RFID protocol queues sent by the RFID protocol interaction module into 64bit data, packet headers and control signals and sending the 64bit data, packet headers and control signals to the RFID protocol interaction scheduling module;
the RFID protocol interaction scheduling module is used for scheduling the protocol interaction queue when the RFID protocol interaction module performs protocol interaction;
the timing unit is used for performing timing operation of RFID protocol interaction;
the RFID signal detection unit is used for detecting the RFID protocol group signals after interaction is completed and transmitting error signals to the display module.
2. The low bit error rate multi-protocol RFID reader of claim 1, wherein the RFID protocol selection module comprises:
the protocol selection requirement input module is used for manually inputting the protocol selection requirement of the RFID reader-writer;
the result matching module is used for receiving the RFID protocol group which is sent by the RFID protocol input module and accords with the use condition of the current RFID reader-writer, and carrying out result matching on the RFID protocol group and the protocol selection requirement input by the protocol selection requirement input module, wherein the same RFID protocol is sent to the result comparison module, and the RFID protocols with different result matching are discarded;
the result comparison module is used for receiving the RFID protocol sent by the result matching module and carrying out RFID protocol comparison, wherein the RFID protocol comparison comprises RFID protocol writing speed comparison and RFID protocol reading speed comparison;
and the result output module is used for receiving the RFID protocol sent by the result comparison module and transmitting the RFID protocol to the display module for client display.
3. The multi-protocol RFID reader of claim 2, wherein the RFID protocol interaction module includes an SRIO data input, an SRIO data output, and a 2-way multi-protocol transmission channel output, the RFID protocol interaction module further comprising;
the verification module is used for ensuring the correctness of the forwarded data packet format and protecting the data from being occupied by the error data packet, so that the effective utilization rate of the data bus is improved;
the multicast control module is used for adding a corresponding decoding and copying module in the switching equipment and converting the data packet with the multicast ID into data packets with a plurality of unicast IDs;
the switching structure module can identify the data packet sent to the SRIO node and the data packet sent to other protocol devices, and the data packets enter the switching structure together to be scheduled and forwarded
The transmission buffer module is used for buffering the data packet to be forwarded and matching the port rate, and the buffer structure of the transmission buffer module comprises an input buffer and an output buffer;
the flow control module is used for preventing packet loss caused by high-bandwidth to low-bandwidth conversion, and the flow control mode comprises buffering, back pressure and throttling;
the routing table module is used for storing routing configuration information and reserving virtual node IDs for other high-speed protocol devices, and the routing table represents the corresponding relation between ports and the node IDs and controls the flow direction of data packets in the system;
the main control module is used for controlling and monitoring various modules in the system, and is used for realizing configuration of a routing table, detection and recovery of abnormal states of the system and outputting statistical data of various ports.
4. The multi-protocol RFID reader of claim 3, wherein the specific working method of the RFID protocol interactive scheduling module is as follows:
s1, receiving an RFID protocol queue with conversion completed;
s2, acquiring packet header information of each RFID protocol in the queue;
s3, updating the virtual time of RFID protocol interaction;
s4, judging whether the current RFID protocol is a real-time service flow or not;
s5, if the judgment result of the step S4 is negative, judging whether the current bandwidth is sufficient, and if the judgment result of the step S4 is positive, distributing the bandwidth according to the weight requirement;
s6, if the bandwidth judgment result in the step S5 is insufficient, the residual bandwidth is allocated according to the weight proportion, and if the bandwidth judgment result in the step S5 is sufficient, the bandwidth is allocated according to the weight requirement;
s7, calculating RFID protocol interaction virtual time;
s8, selecting the packet with the smallest virtual completion time to carry out dispatching integration.
5. The low bit error rate multi-protocol RFID reader of claim 4, wherein the timing unit comprises:
a timer for setting the running time of the RFID reader-writer;
the timer interrupt control module is used for performing interrupt operation of the RFID reader-writer when the running time of the RFID reader-writer is set by the timer;
and the counter is used for counting the number of successful reading and writing times in the running time of the RFID reader-writer.
6. The multi-protocol RFID reader of claim 5, wherein the RFID reader works as follows;
a1, a user inputs an RFID protocol group conforming to the use condition of the current RFID reader-writer through an RFID protocol input module
A2, inputting the protocol selection requirement of the current RFID reader-writer through the RFID protocol selection module
A3, judging whether the RFID protocol group matches with the protocol selection requirement
A4, if the judgment result is yes, outputting the RFID protocol queue to the RFID protocol unpacking module
A5, the RFID protocol unpacking module unpacks the RFID protocol queue,
a6, the unpacked RFID protocol group performs protocol interaction queue scheduling through the RFID protocol interaction scheduling module
A7, detecting the interacted RFID protocol group signal through an RFID signal detection unit,
a8, transmitting the detection result to a display module for client display.
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