CN101964672B - Near field communication method of non-contact radio frequency identification devices - Google Patents
Near field communication method of non-contact radio frequency identification devices Download PDFInfo
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- CN101964672B CN101964672B CN 201010275784 CN201010275784A CN101964672B CN 101964672 B CN101964672 B CN 101964672B CN 201010275784 CN201010275784 CN 201010275784 CN 201010275784 A CN201010275784 A CN 201010275784A CN 101964672 B CN101964672 B CN 101964672B
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Abstract
The invention discloses a near field communication method of non-contact radio frequency identification devices for solving the technical problem of convenience of communication of a plurality of hand-held non-contact radio frequency identification devices. The method comprises the following steps of: making one to one connection-oriented communication by the hand-held non-contact radio frequency identification device A according to a communication ID index table of other non-contact radio frequency identification devices, or utilizing a non-connection-oriented communication mode for sending device settings command subsets, tag read and write command subsets or device status query command subsets; and waiting for serial commands thereof and data sent by other non-contact radio frequency identification devices by the hand-held non-contact radio frequency identification device A when the communication is completed. Compared with the prior art, when the hand-held non-contact radio frequency identification device carries out point to point data exchange with another similar device and carries out data broadcasting with a plurality of devices, the invention has high efficiency, is safe, and expands application flexibility of near field communication of the non-contact radio frequency identification devices.
Description
Technical field
The present invention relates to the near field communication method of a kind of communication means of radio frequency discrimination RFID, particularly a kind of radio frequency discrimination RFID.
Background technology
Present hand-hold type non-contact radio-frequency identification equipment is widely used in the application of warehousing management, local logistics, herding safety detection, and most of hand-hold type non-contact radio-frequency identification equipment all is independent individuality, finishes separately the task that it possesses function; Perhaps utilize the existing 802.11b/g in present place, GPRS wireless network, Bluetooth to be connected with other equipment, work in coordination with some the specific work of finishing.When some service application place needs many short-range collaborative the finishing the work of non-contact radio-frequency identification equipment, but this service application scene is without the 802.11b/g network, perhaps can not accept the time delay of GPRS network, or some equipment end is not when possessing the Bluetooth function, and the hand-hold type non-contact radio-frequency identification equipment flexible Application of prior art is just limited.
Utilize the 802.11b/g radio communication that the WAP (wireless access point) of 802.11b/g need to be installed in the service application place, require simultaneously to have in the network main process equipment to finish the processing of application data, communication mode is based on when connecting communication in application, because 802.11b/g network configuration annexation is complicated, when the corresponding a plurality of identification equipments of a main process equipment carry out communication, can't carry out in real time flexibly a plurality of identification equipments and host communication.
When utilizing GPRS network to communicate, because GPRS network has uncertain time delay, the application of some business can not put up with time-delay, when carrying out transfer of data by GPRS network simultaneously, can produce certain campus network, practical application is got up not cheap.
Utilize the Bluetooth technology to realize short-distance wireless communication, can only be man-to-man towards on-link mode (OLM) communication, and can't realize the non-towards on-link mode (OLM) communication of one-to-many.
No matter based on the 802.11b/g technology, or GPRS network technology, Bluetooth technology, all need to process complicated agreement, realize comparatively difficulty, in the situation that only needs short haul connection, development cost is higher.Therefore, the communication that adopts these standard agreements is inappropriate to requiring short-distance transmission, application scenario that the transmission information amount is few.
Summary of the invention
The near field communication method that the purpose of this invention is to provide a kind of non-contact radio-frequency identification equipment, the technical problem that solve are convenient many cover hand-hold type non-contact radio-frequency identification equipment Alternates, mutually intercommunication.
The present invention is by the following technical solutions: a kind of near field communication method of non-contact radio-frequency identification equipment, may further comprise the steps: one, hand held noncontact radio frequency identification equipment A is according to other non-contact radio-frequency identification equipments of listing in other non-contact radio-frequency identification equipment communication ID concordance list that sets within it, it is man-to-man towards connecting communication to select one of them non-contact radio-frequency identification equipment B of concordance list to do, or hand held noncontact radio frequency identification equipment A and all non-contact radio-frequency identification equipment communicate, use non-ly towards connecting communication pattern, transmitting apparatus arranges subset of commands, label read write command subset or device status inquiries subset of commands; Two, hand held noncontact radio frequency identification equipment A arranges hand held noncontact radio frequency identification equipment A and enters man-to-man towards connecting communication pattern, send link information to some non-contact radio-frequency identification equipment B, some non-contact radio-frequency identification equipment B enter after the One-to-one communication pattern, the timed sending response frame is to hand-held non-contact radio-frequency identification equipment A, hand held noncontact radio frequency identification equipment A also sends response frame to some non-contact radio-frequency identification equipment B, device A is no more than 10 milliseconds to the time that some non-contact radio-frequency identification equipment B sends response frame, non-contact radio-frequency identification equipment B to hand held noncontact radio frequency identification equipment A adjacent blanking time that sends response frame for twice be 500 milliseconds; Or hand held noncontact radio frequency identification equipment A directly sends information to all non-contact radio-frequency identification equipments that search; Three, non-contact radio-frequency identification equipment B executes equipment that the command communication of subset of commands, label read write command subset or device status inquiries subset of commands is set is complete, hand held noncontact radio frequency identification equipment A enters listening state, waits for the serial port command of the application module that it is inner and the data that other non-contact radio-frequency identification equipments send over.
Hand held noncontact radio frequency identification equipment A of the present invention does man-to-man towards being connected communication with non-contact radio-frequency identification equipment B, hand held noncontact radio frequency identification equipment A sends carrier frequency and changes order to some non-contact radio-frequency identification equipment B, consult the separately carrier frequency of communication, after consulting successfully, the carrier frequency that hand held noncontact radio frequency identification equipment A and some non-contact radio-frequency identification equipment B jump to new negotiation communicates, after the carrier frequency communication after consulting, a certain specific non-contact radio-frequency identification equipment B is every 500 milliseconds, send the response frame data of safeguarding link to hand held noncontact radio frequency identification equipment A, hand held noncontact radio frequency identification equipment A and non-contact radio-frequency identification equipment B ultrasonic are spent 3000 milliseconds of times and are not received the other side's response frame data, and then hand held noncontact radio frequency identification equipment A and non-contact radio-frequency identification equipment B withdraw from man-to-man communication pattern.
The foundation of other non-contact radio-frequency identification equipment communication ID concordance list of the present invention, adopt following steps: one, hand held noncontact radio frequency identification equipment A sends search signal, carry this hand held noncontact radio frequency identification equipment device A in the information of search signal ID number, whether non-contact radio-frequency identification equipment A effective communication range in have other non-contact radio-frequency identification equipments in work, then enter listening state if detecting; Other non-contact radio-frequency identification equipments have received this search signal, and ID number of hand held noncontact radio frequency identification equipment A as destination address, number sent to hand held noncontact radio frequency identification equipment A with self device id; Two, hand held noncontact radio frequency identification equipment A is according to the device id received number, with the equipment of itself ID number parameter as identification, the device id that searches number is put into respectively communication frame as destination address, then information to other non-contact radio-frequency identification equipments transmission query facility titles, device type enter listening state; Three, other non-contact radio-frequency identification equipments receive Query Informations, and ID number and ID own number of carrying in the communication frame compared, and are identical, and self ID information, device name, device type information sent to hand held noncontact radio frequency identification equipment A; Four, hand held noncontact radio frequency identification equipment A receives device name, device type information, hand held noncontact radio frequency identification equipment A selectes other non-contact radio-frequency identification equipments in the effective coverage and classifies, set up other non-contact radio-frequency identification equipment communication ID concordance list, be stored in the random access memory of the primary processor of hand held noncontact radio frequency identification equipment A.
Non-contact radio-frequency identification equipment A of the present invention does not receive significant response through after 10 seconds, does not carry out the wireless connections operation.
Other non-contact radio-frequency identification equipments of the present invention receive Query Information, and ID number and ID own number of carrying in the communication frame compared, and are not identical, then abandon this communication frames, will not respond.
Other non-contact radio-frequency identification equipments of the present invention receive Query Information, with ID number of carrying in the communication frame with compare for ID own number, identical, in the Query Information of other non-contact radio-frequency identification equipments to hand-held non-contact radio-frequency identification equipment A, abandon some Query Information instruction or data communication instruction is set.
Detection of the present invention with communicate by letter before, other non-contact radio-frequency identification equipments send data at same channel, it is occupied that hand held noncontact radio frequency identification equipment A detects channel, postpones 5 milliseconds to 100 milliseconds, whether again detect information occupied.
Equipment of the present invention arranges subset of commands and is used for hand held noncontact radio frequency identification equipment A to the communication pattern of other non-contact radio-frequency identification equipments, the setting of messaging parameter, is specially: the time that sets Date, arrange other non-contact radio-frequency identification equipments with the electronic tag that reads upload in real time or store, arrange both sides' communication carrier wave frequency, both sides be set whether work in towards the connecting communication pattern.
Label read write command subset of the present invention is used for hand held noncontact radio frequency identification equipment A to the setting of the read-write control in the electronic tag type selecting of other non-contact radio-frequency identification equipments, electronic labeling information territory, is specially: be used for that other non-contact radio-frequency identification equipments are set and read the EPC code in uhf band 6C electronic labeling information territory, TID code or user data area, kill uhf band 6C electronic tag.
Status inquiry command subset of the present invention is used for hand held noncontact radio frequency identification equipment A to the state of the equipment of other non-contact radio-frequency identification equipments own and functional inquiry, is specially: equipment dispatch from the factory software version number that ID number, baseband processor use, read label information, read number of labels, the cell voltage of inquiring about other non-contact radio-frequency identification equipments, device type.
The present invention compared with prior art, a radio communication circuit module is set in the hand held noncontact radio frequency identification equipment, the baseband processor of device interior can connect the radio communication circuit module by serial ports, control radio communication circuit module is carried out transfer of data, the equipment that has same radio communication circuit module with another one carries out point-to-point exchanges data, carry out data broadcast with a plurality of equipment with same radio communication circuit module, efficient is high, safety, has expanded the application flexibility that the non-contact radio-frequency identification equipment is closely communicating.
Description of drawings
Fig. 1 is method flow diagram of the present invention.
Fig. 2-the 1st, of the present invention from equipment end state decision flow chart tieback receipts shape to judging command type.
Fig. 2-the 2nd of the present inventionly arranges subset of commands figure from equipment end state decision flow chart equipment.
Fig. 2-the 3rd, of the present invention from equipment end state decision flow chart label read write command subset figure.
Fig. 2-the 4th, of the present invention from equipment end state decision flow chart device status inquiries subset of commands figure.
Fig. 3 is that different non-contact radio-frequency identification equipment of the present invention is towards connecting communication flow diagram.
Fig. 4 is that different non-contact radio-frequency identification equipment of the present invention is non-towards connecting communication flow diagram.
Embodiment
Be described in further detail of the present invention below in conjunction with drawings and Examples.As shown in Figure 1, the near field communication method of non-contact radio-frequency identification equipment of the present invention, non-contact radio-frequency identification equipment A be as main equipment, and other non-contact radio-frequency identification equipments are as from equipment, main equipment with from the communicating by letter of equipment, may further comprise the steps:
One, detect, the hand held noncontact radio frequency identification equipment arranges a radio communication circuit module, the baseband processor of device interior connects the interface of radio communication circuit module by serial ports, hand held noncontact radio frequency identification equipment A powers on and activates operation, enter the pattern of other non-contact radio-frequency identification equipments of search, carry out the wireless connections operation with other non-contact radio-frequency identification equipments, send search signal, carry the serial ID number (identify label number Identity) of this hand held noncontact radio frequency identification equipment A in the information of search signal, whether hand held noncontact radio frequency identification equipment A effective communication range in have other hand held noncontact radio frequency identification equipments in work, then enter listening state if detecting;
If there are other non-contact radio-frequency identification equipments to send data at same channel, it is occupied that hand held noncontact radio frequency identification equipment A detects channel, whether behind the random time between postponing 5 milliseconds to 100 milliseconds, it is occupied again to detect information, until information is idle; Other non-contact radio-frequency identification equipments have received this search signal, itself be in the linking status that does not have with other non-contact radio-frequency identification equipment, ID number of hand held noncontact radio frequency identification equipment A as destination address, number sent to hand held noncontact radio frequency identification equipment A with self device id;
Through 5 seconds to 15 seconds, after being preferably 10 seconds, hand held noncontact radio frequency identification equipment A does not receive significant response, namely do not receive ID number that other equipment send, thinking does not have other non-contact radio-frequency identification equipments to exist, and hand-held Non-contact radio-frequency identification is established A and do not carried out the wireless connections operation.
Two, inquiry, hand held noncontact radio frequency identification equipment A is according to the device id received number, carry out query manipulation, hand held noncontact radio frequency identification equipment A is with the equipment of itself ID number parameter as identification, the device id that searches number is put into respectively communication frame as destination address, send Query Information to other non-contact radio-frequency identification equipments, Query Information comprises device name, the device type of other non-contact radio-frequency identification equipments, then enters listening state;
Communication frame is broadcast frame and non-broadcast frame, broadcast frame is used for other non-contact radio-frequency identification equipments of hand held noncontact radio frequency identification equipment A search periphery, and non-broadcast frame is used for hand held noncontact radio frequency identification equipment A and peripheral other non-contact radio-frequency identification equipments communicating by letter each other.
Three, other non-contact radio-frequency identification equipments receive Query Information, with ID number of carrying in the communication frame with compare for ID own number, if identical, then ID information, device name, the device type information with self sends to hand held noncontact radio frequency identification equipment A, himself judges the foundation of this informed source for ID number as hand held noncontact radio frequency identification equipment A, remember simultaneously hand held noncontact radio frequency identification equipment A identification ID number, as later unique communication target address; If not identical, then abandon this communication frames, will not respond; Other non-contact radio-frequency identification equipments can in the Query Information of handing non-contact radio-frequency identification equipment A, abandon some Query Information instruction or data communication instruction is set, to reach information privacy.
Four, select, hand held noncontact radio frequency identification equipment A receives device name, device type information, display interface by oneself shows, hand held noncontact radio frequency identification equipment A selectes other non-contact radio-frequency identification equipments in the effective coverage and classifies, selected equipment conduct is the target device of radio communication next time, allows all to reselect a new target device before the radio communication each time;
The operating personnel of hand held noncontact radio frequency identification equipment A are according to the device name, the device type information that show, select it to want to set up the non-contact radio-frequency identification equipment of wireless connections, hand held noncontact radio frequency identification equipment A records ID number of selected equipment, as the identification ID that communicates by letter with it number, apparatus for establishing communication ID concordance list, be stored in the random access memory ram of primary processor of hand held noncontact radio frequency identification equipment A authentication during for communication; The hand held noncontact radio frequency identification equipment A communication ID concordance list of initiatively not updating the equipment, only just renewal under operating personnel's manual operation of hand held noncontact radio frequency identification equipment A.
Five, detecting, detect with communicate by letter before, if there are other non-contact radio-frequency identification equipments to send data at same channel, it is occupied that hand held noncontact radio frequency identification equipment A detects channel, behind the random time between postponing 5 milliseconds to 100 milliseconds, whether occupied, until information is idle, only have a non-contact radio-frequency identification equipment sending data to guarantee same channel of the same moment if again detecting information; Hand held noncontact radio frequency identification equipment A and other non-contact radio-frequency identification equipments just are in the transmission state when sending data, be in the detecting listening state when not sending data.
Six, operation, hand held noncontact radio frequency identification equipment A communicates by letter with other non-contact radio-frequency identification equipments, hand held noncontact radio frequency identification equipment A selects a non-contact radio-frequency identification equipment, to its transmitting apparatus order in subset of commands, label read write command subset or the device status inquiries subset of commands is set;
Equipment arranges subset of commands and is used for hand held noncontact radio frequency identification equipment A to the communication pattern of other non-contact radio-frequency identification equipments, the setting of messaging parameter, is specially: the time that sets Date, arrange other non-contact radio-frequency identification equipments with the electronic tag that reads upload in real time or store, arrange both sides' communication carrier wave frequency, both sides be set whether work in towards the connecting communication pattern;
Label read write command subset is used for hand held noncontact radio frequency identification equipment A to the setting of the read-write control in the electronic tag type selecting of other non-contact radio-frequency identification equipments, electronic labeling information territory, is specially: be used for arranging EPC code (product electronic code identifier), TID code (label identifier) or user data area that other non-contact radio-frequency identification equipments read the uhf band 6C electronic labeling information territory that meets international standard ISO-IEC-CD 18000-6C, kill uhf band 6C electronic tag;
The device status inquiries subset of commands is used for hand held noncontact radio frequency identification equipment A to the state of the equipment of other non-contact radio-frequency identification equipments own and functional inquiry, is specially: equipment dispatch from the factory software version number that ID number, baseband processor use, read label information, read number of labels, the cell voltage of inquiring about other non-contact radio-frequency identification equipments, device type;
As shown in Figure 3, the operating personnel of hand held noncontact radio frequency identification equipment A want with some searched to non-contact radio-frequency identification equipment B do man-to-man towards being connected communication, select this equipment, hand held noncontact radio frequency identification equipment A sends carrier frequency and changes order to some non-contact radio-frequency identification equipment B, consult the separately carrier frequency of communication, after some non-contact radio-frequency identification equipment B agree that return information is consulted successfully, the carrier frequency that hand held noncontact radio frequency identification equipment A and some non-contact radio-frequency identification equipment B jump to new negotiation communicates, after the carrier frequency communication after consulting, enter the One-to-one communication pattern, non-contact radio-frequency identification equipment B timed sending safeguards that the response frame of link is to hand-held non-contact radio-frequency identification equipment A, hand held noncontact radio frequency identification equipment A also sends response frame and safeguards link to some non-contact radio-frequency identification equipment B simultaneously, keep Radio Link continuous with this, be specially:
Hand held noncontact radio frequency identification equipment A select connection-oriented mode with from devices communicating, hand held noncontact radio frequency identification equipment A operating personnel have selected one from equipment, if should send data at same channel from equipment, it is occupied that hand held noncontact radio frequency identification equipment A detects channel, the delay span is 5 milliseconds to 100 milliseconds random time, whether occupied, until channel idle if again detecting channel; Hand held noncontact radio frequency identification equipment A arranges order to target from the communication pattern that the equipment transmitting apparatus arranges the subset of commands, consults to adopt connection-oriented communication mode with target from equipment;
After should receiving communication pattern order is set from equipment, self ID number and new channel carrier frequency as parameter, be formed a response frame and send to after the hand held noncontact radio frequency identification equipment A, jump on the new channel, and enter listening state;
Hand held noncontact radio frequency identification equipment A receives after this response frame that sends over from equipment, resolve new carrier frequency parameter, jump on the new channel according to new carrier frequency parameter, the communication linkage that transmitting apparatus arranges in the subset of commands is set up order to should behind equipment, entering listening state;
After should receiving communication linkage foundation order from equipment, start timed sending and safeguard linking status function, regularly send to hand held noncontact radio frequency identification equipment A and safeguard the linking status response frame, after sending, enter listening state;
Hand held noncontact radio frequency identification equipment A receive this from equipment feedback safeguard the linking status response frame after, the affirmation Radio Link is set up, also send simultaneously response safeguard the linking status frame information to this from equipment, enter afterwards listening state, wait for the instruction of inner other application modules of hand held noncontact radio frequency identification equipment A;
Hand held noncontact radio frequency identification equipment A sends continuously the response frame time to some non-contact radio-frequency identification equipment B and is no more than 10 milliseconds, non-contact radio-frequency identification equipment B to hand held noncontact radio frequency identification equipment A adjacent blanking time that sends response frame for twice be 500 milliseconds; Hand held noncontact radio frequency identification equipment A and some non-contact radio-frequency identification equipment B ultrasonic are spent 3000 milliseconds of times and are not received the other side's response frame data, and then hand held noncontact radio frequency identification equipment A and non-contact radio-frequency identification equipment B withdraw from man-to-man communication pattern;
Hand held noncontact radio frequency identification equipment A and some non-contact radio-frequency identification equipment B change the communication carrier frequency, enter point-to-point data communication mode, avoiding other equipment disturbs, no longer the wireless connections request of other equipment is replied simultaneously, otherwise might form interference, cause this communication failure;
Such as Fig. 4 institute formula, or the operating personnel of hand held noncontact radio frequency identification equipment A want that the non-contact radio-frequency identification equipment that searches with all communicates, use non-towards connecting communication pattern, non-contact radio-frequency identification equipment A and other non-contact radio-frequency identification equipments do not need to send the maintenance link response frame, directly post a letter to all non-contact radio-frequency identification equipments that search, be specially:
Hand held noncontact radio frequency identification equipment A selects non-connection-oriented mode and communicates from equipment: hand held noncontact radio frequency identification equipment A operating personnel have selected one from equipment, if should send data at same channel from equipment, it is occupied that hand held noncontact radio frequency identification equipment A detects channel, the delay span is 5 milliseconds to 100 milliseconds random time, whether occupied, until channel idle if again detecting channel; Hand held noncontact radio frequency identification equipment A is to this from equipment transmit operation order, and order control comprises that equipment arranges subset of commands, label read write command subset and status inquiry command subset, after being sent, enters listening state;
Should be after equipment receive operational order, the operation response order, transmit operation command response frame enters listening state to after the hand held noncontact radio frequency identification equipment A;
Or hand held noncontact radio frequency identification equipment A enters listening state, waits the serial port command of its inner application module and the data that other non-contact radio-frequency identification equipments send over.
Seven, communication is complete, and hand held noncontact radio frequency identification equipment A enters listening state, waits the serial port command of its inner application module and the data that other non-contact radio-frequency identification equipments send over.
The near field communication method of non-contact radio-frequency identification equipment of the present invention, the wireless communication module that adopts is made of above radio transmitter, receiving circuit and an antenna, be arranged in the non-contact radio-frequency identification equipment, baseband processor control radio transmitter sends information, the information that receiving circuit receives is identified by baseband processor, write the identification unit in the wireless communication protocol of baseband processor, as unique identify label of communication, application data exchange.
The near field communication method of non-contact radio-frequency identification equipment of the present invention from communicating by letter of equipment and main equipment, may further comprise the steps:
1, hand held noncontact radio frequency identification equipment A powers on and activates operation, enter the pattern of other non-contact radio-frequency identification equipments of search, carry out the wireless connections operation with other non-contact radio-frequency identification equipments, send search signal, carry this hand held noncontact radio frequency identification equipment device A in the information of search signal ID number, whether non-contact radio-frequency identification equipment A effective communication range in have other non-contact radio-frequency identification equipments in work, then enter listening state if detecting;
2, intercept, other non-contact radio-frequency identification equipments have received this search signal, itself be in the linking status that does not have with other non-contact radio-frequency identification equipment, ID number of hand held noncontact radio frequency identification equipment A as destination address, number sent to hand held noncontact radio frequency identification equipment A with self device id;
If from device channel not idle (having other equipment to occupy this communication channel), the delay span is 5 milliseconds to 100 milliseconds random time, whether again detect channel occupied, until when channel idle, send communication frame, send to hand held noncontact radio frequency identification equipment A, after sending, enter listening state for ID number with self;
Hand held noncontact radio frequency identification equipment A was preferably ID number that receives other non-contact radio-frequency identification equipments in 10 seconds at 5 seconds to 15 seconds, set up the ID concordance list; With other ID number communication target address as subsequent communications of non-contact radio-frequency identification equipment; Hand held noncontact radio frequency identification equipment A becomes the communication protocol frame according to communication protocol regulation with self ID number, inquiry machine name, Machine Type Information encapsulation, send to successively from equipment according to ID concordance list order, send after the information, again enter listening state.
3, other non-contact radio-frequency identification equipments receive the Query Information frame, and ID number and ID own number of carrying in the communication frame compared, if do not meet, then abandon this information frame, reenter listening state;
If ID number of communication protocol frame band is number identical with self ID, then with self machine name and Machine Type information, itself ID number, be packaged into the communication protocol frame according to communication protocol, send to hand held noncontact radio frequency identification equipment A.
4, hand held noncontact radio frequency identification equipment A receives from the information feedback of the non-contact radio-frequency identification equipment of equipment, machine name, Machine Type information exchange are crossed display screen and shown, according to ID concordance list order, the inquiry next one is from machine name and the Machine Type information of the non-contact radio-frequency identification equipment of equipment, until that all devices in the ID concordance list is all inquired about is complete, reenter listening state.
5, as shown in Figure 2, other non-contact radio-frequency identification equipments (from equipment) listen to wireless signal, detect keyboard commands, data command judgment frame Target id according to wireless signal and keyboard commands, if identical with self ID, judge again seedbed ID, after if difference further is judged as broadcast frame, set up the ID concordance list, if not broadcast frame then returns initially; If seedbed ID conforms to the ID concordance list of storage, judge that further command type is that equipment arranges subset of commands, label read write command subset or device status inquiries subset of commands,
If equipment arranges subset of commands, the content of judging order is the set of time order, according to the date time parameter that carries in the order real-time clock (RTC) register on the built-in baseband processor of non-contact radio-frequency identification equipment is set, take this time parameter as the correction reference time parameter, after setting completed, send the information of affirmation to hand held noncontact radio frequency identification equipment A, then return accepting state; Or the content of judging order is to arrange to upload in real time and memory command, the built-in status register respective flag position of non-contact radio-frequency identification equipment is set, after setting completed, send the information of affirmation to hand held noncontact radio frequency identification equipment A, then return the reception shape; Or the content of judging order is towards the connection mode setting command, send the new traffic carrier frequency to hand held noncontact radio frequency identification equipment A, start and safeguard the link timer, the timed sending maintenance information, the communication frequency of oneself is adjusted on the new communication frequency, A communicates by letter with the hand held noncontact radio frequency identification equipment, then returns the reception shape;
If label read write command subset, the content of judging order is to read 6C electronic tag EPC code, read 6C electronic tag TID code, read 6C electronic tag user data area or kill the 6C electronic tag, 6C electronic tag EPC code is read in execution, read 6C electronic tag TID code or read 6C electronic tag user data area, inquire about the information sign whether store this locality in the built-in status register respective flag position after being finished, according to flag state is set, implement local storage, concurrent carry information returns accepting state after to hand held noncontact radio frequency identification equipment A, does not perhaps implement local storage but transmission information is returned accepting state after to hand held noncontact radio frequency identification equipment A; Execution sends to hand held noncontact radio-frequency apparatus A with the execution result state after killing the operation of 6C electronic tag, returns accepting state;
If device status inquiries subset of commands, the content of judging order be the software version number used of search equipment ID, inquiry baseband processor, read label information, read number of labels, the cell voltage of inquiring about other non-contact radio-frequency identification equipments or device type, according to device status inquiries subset of commands interior perhaps send software version number, read label information, read number of labels, cell voltage or device type and return the reception shape after to hand held noncontact radio frequency identification equipment A.
Embodiment, wireless communication module is made of 1 radio transmitter, 1 receiving circuit and 1 antenna, transmit frequency range is 2.400GHz to 2.4835GHz, modem chip adopts the nRF24L01 of Norway Nordic company, radio-frequency emission power is 0dBm, and baseband processor is the STM32F101RBT6 of the STM of ST Microelectronics.The baseband processor control program adopts ANSIC C Programming with Pascal Language to realize that the base band program operates in STM32F101RBT6 inside, and control nRF24L01 chip is finished the action that transmits and receives of radiofrequency signal.The hand held noncontact radio frequency identification equipment adopts Shenzhen to look far into the distance XC2901, the XC2902 non-contact radio-frequency identification equipment of paddy information technology share Co., Ltd.
When wireless communication module powered on, the carrier wave center frequency point of radio circuit work was set as 2.404GHz, takies the bandwidth of 1MHz in the communication process.This channel is used for the mutual search, non-towards connecting communication of wireless communication module; When the negotiation of wireless communication module is adopted towards connected mode communication, the centre carrier frequency point acquiescence of the radio circuit work of wireless communication module is adjusted to 2.474GHz, still take the 1MHz bandwidth, detect 2.474GHz and taken by other communication equipments, then consult by the intercommunication frame.A serial ports of the baseband processor on the wireless communication module is externally drawn, as with the communication interface of other circuit; This wireless communication module is applied in the XC2901 that paddy information technology share Co., Ltd is looked far into the distance in Shenzhen, in the XC2902 non-contact radio-frequency identification equipment, the XC2901 product is as the hand held noncontact radio frequency identification equipment A of present embodiment, the primary processor PXA270 that it is inner and flash memory storage chip JS28F256P30B, synchronous DRAM SDRAM MT48LC32M16B2T consists of minimum system, the serial ports of primary processor PXA270 in the inner minimum system of the serial ports that the baseband processor of the wireless communication module that the XC2901 product is built-in is externally drawn and XC2901 links to each other, as with the interface of application program swap data; The XC2902 product as described in this method from equipment non-contact radio-frequency identification equipment, on the built-in wireless communication module, the serial ports free time that baseband processor is externally drawn need not, baseband processor is finished Card Reader control.
Other non-contact radio-frequency identification equipments of non-contact radio-frequency identification equipment device A search periphery are for ID number the order that 32323639 non-contact radio-frequency identification equipment device A is sent other non-contact radio-frequency identification equipments of search: 55 00 09 00 00 00 00 06 32 32 36 39 3E DA.
Device id number is that 32 30 35 31 non-contact radio-frequency identification equipment receives search command, and responds, and the response command that self device id number is sent to hand held noncontact radio frequency identification equipment A is:
55?00?09?32?32?36?39?06?32?30?35?31?BF?FE。
Hand held noncontact radio frequency identification equipment A and other non-contact radio-frequency identification equipments carry out under the non-connection-oriented communication pattern, the use procedure of status inquiry command subset related command is for ID number that 32 32 36 39 hand held noncontact radio frequency identification equipment A carries out the order that device id number is 32 30 35 31 non-contact radio-frequency identification equipment query manipulation:
1) inquiry cell voltage order: 55 00 09 32 30 35 31 36 32 32 36 39 DE 53.
2) query software version command: 55 00 09 32 30 35 31 34 32 32 36 39 5E A0.
3) inquire about storage tags quantity: 55 00 09 32 30 35 31 3D, 32 32 36 39 5D 18.
4) inquire about forward 1 and read label information: 55 00 0E, 32 30 35 31 4A, 32 32 36 39 00 00 0,001 06 D9.
5) inquire about backward 1 and read label information: 55 00 0E, 32 30 35 31 4B, 32 32 36 39 00 00 0,001 80 BA.
6) query facility type command: 55 00 09 32 30 35 31 33 32 32 36 39 DF CB.
Device id number is that 32 30 35 31 non-contact radio-frequency identification equipments receive Query Information, and feedback command is as follows:
1) inquiry cell voltage feedback: (cell voltage is 04.10V)
55?00?0D?32?32?36?39?36?32?30?35?31?00?04?01?00?28?79。
2) query software version feedback: (software version number is 01.01)
55?00?0D?32?32?36?39?34?32?30?35?31?00?01?00?01?29?F6。
3) inquire about storage tags quantity feedback: (stored 00401 and read label information)
55?00?0E?32?32?36?39?3D?32?30?35?31?00?00?04?00?01?0A?2D。
4) inquire about forward 1 and read label information: (the read message content is 303132333435363738393A3B3C3D3E3F404142434445464748494A4B 4C4D4E4F)
55?00?27?32?32?36?39?4B?32?30?35?31?30?31?32?33?34?35?36?37?38?39?3A?3B
3C?3D?3E?3F?40?41?42?43?44?45?46?47?48?49?4A?4B?4C?4D?4E?4F?FF?0002。
5) inquire about backward 1 and read label information: (the read message content is 303132333435363738393A3B3C3D3E3F404142434445464748494A4B 4C4D4E4F)
55?00?27?32?32?36?39?4B?32?30?35?31?30?31?32?33?34?35?36?37?38?39?3A?3B
3C?3D?3E?3F?40?41?42?43?44?45?46?47?48?49?4A?4B?4C?4D?4E?4F?7E?69。
6) query facility type command: 55 00 0A, 32 32 36 39 33 32 30 35 31 01 0F 78.
Hand held noncontact radio frequency identification equipment A carries out being connected under the communication pattern with being connected under the non-connection-oriented communication pattern with other non-contact radio-frequency identification equipments, equipment arranges the use procedure of subset of commands related command, is for ID number that 32 32 36 39 hand held noncontact radio frequency identification equipment A carries out the order that device id number is 32 30 35 31 non-contact radio-frequency identification equipment setting operation:
1) electronic tag is uploaded or memory module arranges order in real time:
55?00?0A?32?30?35?31?30?32?32?36?39?0A?FE?3D。
2) setting arranges order to connecting communication mode on both side:
55?00?0A?32?30?35?31?07?32?32?36?39?0A?F6?94。
3) arrange towards connecting communication mode carrier frequency response command: (consulting new carrier wave center frequency point is 2.474GHz)
55?00?0D?32?32?36?39?08?32?30?35?31?02?04?07?04?18?22。
4) set the order of current date time: (current date is 2010 08 month 09: 45: 43 on the 19th)
55?00?15?32?30?35?31?3C?32?32?36?39?01?00?00?08?01?09?00?09?04?05?04?03?5EE6。
5) hand held noncontact radio frequency identification equipment A and some non-contact radio-frequency identification equipment B enter after the One-to-one communication pattern, and timed sending safeguards that the response frame order of link is:
Device A is to equipment B: 55 00 0A, 32 30 35 31 F1,32 32 36 39 00 06 CE.
Equipment B is to device A: 55 00 0A, 32 32 36 39 F1,32 30 35 31 00 2A B8.
Hand held noncontact radio frequency identification equipment A and other non-contact radio-frequency identification equipments carry out under the non-connection-oriented communication pattern and under connected mode, equipment arranges the use procedure of subset of commands related command, is for ID number that 32 32 36 39 hand held noncontact radio frequency identification equipment A carries out the order that device id number is 32 30 35 31 non-contact radio-frequency identification equipment setting operation:
1) read the EPC code order of 6C electronic tag:
55?00?09?32?30?35?31?81?32?32?36?39?4B?87。
2) read the TID code order of 6C electronic tag:
55?00?09?32?30?35?31?82?32?32?36?39?EB?33。
3) read the user data code order of 6C electronic tag:
55?00?09?32?30?35?31?83?32?32?36?39?6B?48。
4) kill the order of 6C electronic tag:
55?00?09?32?30?35?31?84?32?32?36?39?EA?23。
As shown in table 1, the structure of communication frames is:
Frame head: the beginning flag of communication frames, 1 byte long indicates the original position of a communication frame, these data are special agreement character, do not allow in other frame structure parameters to occur.
Frame length: the length of communication frame data comprises the byte number of " data parameters " three frame parameters of " instruction type ", 1 byte of " frame destination address ", 1 byte of 4 bytes.
The frame destination address: the destination address of communication frame, 4 bytes, for ID number of hand-held Non-contact radio-frequency identifier A or as from ID number of the Non-contact radio-frequency identifier of equipment, the frame destination address is a distinctive address of equipment, as the frame traffic address.
Instruction type: the type of communication frame data parameters, indicating is that the order parameter of this frame is that equipment arranges subset of commands, is label read write command subset or status inquiry command subset.
Data parameters: the additional information of operational order in the communication frame, length are along with instruction type is different and different, are no more than 1000 bytes, and in the communication process, the equipment that sends communication frame number is also put into communication frame as data parameters with self ID.
Ring redundancy check code CRC check data: whether the CRC result of calculation of frame length, frame destination address, instruction type, all bytes of data parameters in the communication frame is used for checking receive data and makes mistakes.
The wireless communication technology of existing ISM band (Industrial Scientific Medical frequency range) is increasingly mature, the present invention arranges a radio communication circuit module in hand held noncontact radio frequency identification equipment product, the application module of device interior can pass through serial communication interface, control radio communication circuit module is carried out transfer of data, the equipment that has same radio communication circuit module with another one carries out point-to-point exchanges data, carries out data broadcast with a plurality of equipment with same radio communication circuit module.In corresponding product line, follow same communication protocol standard, just can accomplish each other mutually intercommunication of equipment, this uses to product and brings a lot of convenience.
The communication frame structure of communicating by letter between the table 1 non-contact radio-frequency identification equipment
| Frame head | Frame length | The frame destination address | Instruction type | Data/parameter | The CRC check data |
| 1 byte | 2 bytes | 2 bytes | 1 byte | The N byte | 2 bytes |
Claims (9)
1. the near field communication method of a non-contact radio-frequency identification equipment, may further comprise the steps: one, hand held noncontact radio frequency identification equipment A is according to other non-contact radio-frequency identification equipments of listing in other non-contact radio-frequency identification equipment communication ID concordance list that sets within it, it is man-to-man towards connecting communication to select one of them non-contact radio-frequency identification equipment B of concordance list to do, or hand held noncontact radio frequency identification equipment A and all non-contact radio-frequency identification equipment communicate, use non-ly towards connecting communication pattern, transmitting apparatus arranges subset of commands, label read write command subset or device status inquiries subset of commands; Two, hand held noncontact radio frequency identification equipment A arranges hand held noncontact radio frequency identification equipment A and enters man-to-man towards connecting communication pattern, send link information to some non-contact radio-frequency identification equipment B, some non-contact radio-frequency identification equipment B enter after the One-to-one communication pattern, the timed sending response frame is to hand-held non-contact radio-frequency identification equipment A, hand held noncontact radio frequency identification equipment A also sends response frame to some non-contact radio-frequency identification equipment B, device A is no more than 10 milliseconds to the time that some non-contact radio-frequency identification equipment B sends response frame, non-contact radio-frequency identification equipment B to hand held noncontact radio frequency identification equipment A adjacent blanking time that sends response frame for twice be 500 milliseconds; Or hand held noncontact radio frequency identification equipment A directly sends information to all non-contact radio-frequency identification equipments that search; Three, non-contact radio-frequency identification equipment B executes equipment that the command communication of subset of commands, label read write command subset or device status inquiries subset of commands is set is complete, hand held noncontact radio frequency identification equipment A enters listening state, waits for the serial port command of the application module that it is inner and the data that other non-contact radio-frequency identification equipments send over;
Described hand held noncontact radio frequency identification equipment A does man-to-man towards being connected communication with non-contact radio-frequency identification equipment B, hand held noncontact radio frequency identification equipment A sends carrier frequency and changes order to some non-contact radio-frequency identification equipment B, consult the separately carrier frequency of communication, after consulting successfully, the carrier frequency that hand held noncontact radio frequency identification equipment A and some non-contact radio-frequency identification equipment B jump to new negotiation communicates, after the carrier frequency communication after consulting, a certain specific non-contact radio-frequency identification equipment B is every 500 milliseconds, send the response frame data of safeguarding link to hand held noncontact radio frequency identification equipment A, hand held noncontact radio frequency identification equipment A and non-contact radio-frequency identification equipment B ultrasonic are spent 3000 milliseconds of times and are not received the other side's response frame data, and then hand held noncontact radio frequency identification equipment A and non-contact radio-frequency identification equipment B withdraw from man-to-man communication pattern.
2. the near field communication method of non-contact radio-frequency identification equipment according to claim 1, it is characterized in that, the foundation of described other non-contact radio-frequency identification equipment communication ID concordance list, adopt following steps: one, hand held noncontact radio frequency identification equipment A sends search signal, carry this hand held noncontact radio frequency identification equipment device A in the information of search signal ID number, whether non-contact radio-frequency identification equipment A effective communication range in have other non-contact radio-frequency identification equipments in work, then enter listening state if detecting; Other non-contact radio-frequency identification equipments have received this search signal, and ID number of hand held noncontact radio frequency identification equipment A as destination address, number sent to hand held noncontact radio frequency identification equipment A with self device id; Two, hand held noncontact radio frequency identification equipment A is according to the device id received number, with the equipment of itself ID number parameter as identification, the device id that searches number is put into respectively communication frame as destination address, then information to other non-contact radio-frequency identification equipments transmission query facility titles, device type enter listening state; Three, other non-contact radio-frequency identification equipments receive Query Informations, and ID number and ID own number of carrying in the communication frame compared, and are identical, and self ID information, device name, device type information sent to hand held noncontact radio frequency identification equipment A; Four, hand held noncontact radio frequency identification equipment A receives device name, device type information, hand held noncontact radio frequency identification equipment A selectes other non-contact radio-frequency identification equipments in the effective coverage and classifies, set up other non-contact radio-frequency identification equipment communication ID concordance list, be stored in the random access memory of the primary processor of hand held noncontact radio frequency identification equipment A.
3. the near field communication method of non-contact radio-frequency identification equipment according to claim 2 is characterized in that, described non-contact radio-frequency identification equipment A does not receive significant response through after 10 seconds, does not carry out the wireless connections operation.
4. the near field communication method of non-contact radio-frequency identification equipment according to claim 3, it is characterized in that, described other non-contact radio-frequency identification equipments receive Query Information, with ID number of carrying in the communication frame with compare for ID own number, not identical, then abandon this communication frames, will not respond.
5. the near field communication method of non-contact radio-frequency identification equipment according to claim 3, it is characterized in that, described other non-contact radio-frequency identification equipments receive Query Information, with ID number of carrying in the communication frame with compare for ID own number, identical, in the Query Information of other non-contact radio-frequency identification equipments to hand-held non-contact radio-frequency identification equipment A, abandon some Query Information instruction or data communication instruction is set.
6. the near field communication method of non-contact radio-frequency identification equipment according to claim 3, it is characterized in that, described detection with communicate by letter before, other non-contact radio-frequency identification equipments send data at same channel, it is occupied that hand held noncontact radio frequency identification equipment A detects channel, whether postpone 5 milliseconds to 100 milliseconds, it is occupied again to detect information.
7. the near field communication method of non-contact radio-frequency identification equipment according to claim 1, it is characterized in that, described equipment arranges subset of commands and is used for hand held noncontact radio frequency identification equipment A to the communication pattern of other non-contact radio-frequency identification equipments, the setting of messaging parameter, is specially: the time that sets Date, arrange other non-contact radio-frequency identification equipments with the electronic tag that reads upload in real time or store, arrange both sides' communication carrier wave frequency, both sides be set whether work in towards the connecting communication pattern.
8. the near field communication method of non-contact radio-frequency identification equipment according to claim 1, it is characterized in that, described label read write command subset is used for hand held noncontact radio frequency identification equipment A to the setting of the read-write control in the electronic tag type selecting of other non-contact radio-frequency identification equipments, electronic labeling information territory, is specially: be used for that other non-contact radio-frequency identification equipments are set and read the EPC code in uhf band 6C electronic labeling information territory, TID code or user data area, kill uhf band 6C electronic tag.
9. the near field communication method of non-contact radio-frequency identification equipment according to claim 1, it is characterized in that, described status inquiry command subset is used for hand held noncontact radio frequency identification equipment A to the state of the equipment of other non-contact radio-frequency identification equipments own and functional inquiry, is specially: equipment dispatch from the factory software version number that ID number, baseband processor use, read label information, read number of labels, the cell voltage of inquiring about other non-contact radio-frequency identification equipments, device type.
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| EP2621100B1 (en) * | 2012-01-27 | 2017-05-10 | BlackBerry Limited | Mobile communications device providing enhanced near field communication (NFC) mode switching features and related methods |
| CN103577485B (en) * | 2012-08-07 | 2016-10-19 | 上海达实联欣科技发展有限公司 | Master slave mode inquiry system and method |
| KR102288610B1 (en) * | 2017-12-19 | 2021-08-10 | 삼성전자주식회사 | Radio frequency setting system and mobile device |
| CN109657771A (en) * | 2018-11-02 | 2019-04-19 | 陕西斯达防爆安全科技股份有限公司 | A kind of wireless telecommunications electronic tag |
| CN111784335B (en) * | 2020-07-17 | 2024-05-31 | Oppo广东移动通信有限公司 | Analog card management method, analog card management device, storage medium, and electronic apparatus |
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