CN103473519A - Routing inspection type radio frequency card reader - Google Patents
Routing inspection type radio frequency card reader Download PDFInfo
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- CN103473519A CN103473519A CN201310374470XA CN201310374470A CN103473519A CN 103473519 A CN103473519 A CN 103473519A CN 201310374470X A CN201310374470X A CN 201310374470XA CN 201310374470 A CN201310374470 A CN 201310374470A CN 103473519 A CN103473519 A CN 103473519A
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Abstract
The invention discloses a routing inspection type radio frequency card reader. The routing inspection type radio frequency card reader comprises a main processor, multiple slave processors and multiple radio frequency modules, wherein the multiple slave processors are respectively connected with the main processor, each slave processor is associated with an address list or an address range, and the address list or the address range is used for indicating the address of at least one identification card to be recognized; each radio frequency module is connected with one slave processor and is used for carrying out state polling on the identification cards positioned in the address list or the address range under the control of the slave processor and returning state data obtained every time to the slave processor; the main processor is used for carrying out polling on the multiple slave processors in a preset cycle or manner, and all the slave processors are used for obtaining the state data. The routing inspection type radio frequency card reader disclosed by the invention can greatly increase the concurrent identification number of the identification cards, and through the cooperative work of the main processor and the slave processors, the management of a large number of identification cards can be simplified.
Description
Technical field
The present invention relates to computer information processing and communication technical field, relate in particular to a kind of inspection type less radio-frequency card reader.
Background technology
Computer information processing and the communication technology have been penetrated into all trades and professions, and the life security for the protection operating personnel in mine operation has played huge effect, and one of them exemplary apparatus is exactly card reader.Card reader is the critical component of Mine Personnel Positioning System, for locate and follow the tracks of the staff in the rugged surroundings of down-hole, provides a great convenience.Existing card reader is all position and the zone of action that the wireless signal of the tag card entrained by continuous reception underground operators emission is determined underground operators, at personnel's concurrency under larger situation, can cause higher skip rate due to the phase mutual interference between the signal of a plurality of tag card emissions, therefore concurrent identification quantity generally is limited to 100 (10 the 2 power orders of magnitude), and this has limited the use of card reader to a great extent.In order to identify more operating personnels, usually need to be equipped with a large amount of card reader, not only cost sharply increases, and a large amount of card reader that will be separate to these to manage be also very difficult.
Summary of the invention
For overcoming above problem, the present invention proposes following technical scheme:
A kind of inspection type less radio-frequency card reader, is characterized in that, comprising:
Primary processor;
A plurality of from processor, with described primary processor, be connected respectively, each is associated with an address list or address realm from processor, and this address list or address realm are used to indicate the address of at least one tag card to be identified;
A plurality of wireless radio frequency modules; each wireless radio frequency modules is connected from processor with one; from the control of processor, the tag card that is positioned at address above mentioned list or address realm is carried out to status poll at this, and the status data that will at every turn obtain returns to this from processor;
Described primary processor a plurality of carries out poll from processor with cycle of presetting or mode to described, obtains described status data from each from processor.
Further, described primary processor is transferred to by the described status data obtained the host computer be connected with described card reader automatically in cycle or the mode of presetting.
Further, when described primary processor is received the request of data from host computer, described primary processor is transferred to host computer by the described status data obtained.
Further, described primary processor before described status data is transferred to host computer first by the encapsulation of described status data and/or be compressed into Frame, then by this data frame transfer to host computer.
Further, each is described stores described address list or address realm from processor self, or
Each described described address list or address realm of reading from processor from outside.
Further, described address list or address realm are distributed by described primary processor.
Further, each wireless radio frequency modules is carried out status poll to tag card and is specifically comprised:
Described wireless radio frequency modules sends wireless signal to each address in above-mentioned address list or address realm successively, if receive the answer signal that tag card with this address returns, records this address; If do not receive answer signal, continue to send wireless signal to next address, until all addresses in described address list or address realm are detected complete, the address of record forms described status data.
Further, described primary processor a plurality ofly carries out poll from processor and specifically comprises described with cycle of presetting or mode:
Described primary processor is coupled to each successively sends request of data from processor, and each will return to primary processor from processor from acquired all status datas receiving this request of data.
Further, each will before acquired all status datas return to primary processor, first all status datas being encapsulated and/or be compressed into Frame, then returns to this Frame to primary processor from processor.
Further, described primary processor and transmit data by high-speed bus between processor.
Further, pass through wired mode or wireless way for transmitting data between described primary processor and host computer.
Further, described primary processor and/or be single-chip microcomputer from processor.
Further, described wireless radio frequency modules comprises the radio frequency chip of supporting the RFID two-way communication.
Further, when the quantity from processor exceeds the IO port processing power of primary processor, at described primary processor, with described a plurality of from being connected at least one multiway analog switch between processor, carry out multiplexed port.
Inspection type less radio-frequency card reader proposed by the invention can significantly promote the concurrent identification number of tag card, and, by the collaborative work of master and slave processor, can simplify the management to a large amount of tag cards.
The accompanying drawing explanation
Fig. 1 is the structural drawing of the described inspection type less radio-frequency of embodiment of the present invention card reader;
Fig. 2 is the exemplary process flow figure from processor;
Fig. 3 is the exemplary process flow figure of primary processor.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
Fig. 1 is the structural drawing of the described inspection type less radio-frequency of the preferred embodiment of the present invention card reader.As shown in Figure 1, the described less radio-frequency card reader 100 of the present embodiment comprises: primary processor 101; A plurality of from processor 102a, 102b ... 102n, be connected with described primary processor 101 respectively; A plurality of wireless radio frequency modules 103a, 103b ... 103n, each wireless radio frequency modules is connected from processor with one.Described primary processor and can select any realization of the prior art from processor, for example the two can be realized in the single-chip microcomputer mode, the preferred ARM series of the present embodiment and 51 series monolithics, described primary processor and transmit data by high-speed bus between processor, spi bus for example, described wireless radio frequency modules has double-direction radio radio communication function, for example can realize by the NRF24L01 chip of supporting the RFID two-way communication communication function of its core.
Each (not shown) that is associated with an address list or address realm from processor, this address list or address realm are used to indicate the address of at least one tag card to be identified.Address list comprises the address of one or more tag cards to be identified, and address realm only comprises a start address and a termination address, and all addresses that are positioned at this start address and termination address scope are all that this is responsible for the scope of identification from processor.
Primary processor or host computer can be in advance each from processor distribution address list or address realm, then each is kept at it storage space of self from processor; Certainly, also can, from the described address list of processor external maintenance or address realm, then from processor, from outside, read in real time when needed.
Each wireless radio frequency modules is connected from processor with one, at this, from the control of processor, the tag card that is positioned at address above mentioned list or address realm is carried out to status poll, and the status data that will at every turn obtain returns to this from processor.Each wireless radio frequency modules is carried out the concrete mode exemplary process diagram shown in Figure 2 of status poll to tag card.In this example, the address realm of take describes as example, in addition, in order to indicate from processor whether completed the operation of patrolling and examining to the tag card in its relative address scope, can give one " patrolling and examining the complement mark position " from processor for each and indicate its mode of operation, for example with 0 expression, not yet complete and patrol and examine, with 1 expression, complete and patrol and examine.
Next describe the idiographic flow of status poll in detail.After powering on or resetting, destination address at first to be inspected is set to the start address (being lowest address) in described address realm, and will " patrol and examine the complement mark position " and be reset to 0; Then, wireless radio frequency modules sends wireless signal to above-mentioned destination address, if the address tag card identical with this destination address received this wireless signal, to described wireless radio frequency modules, sends answer signal; The tag card that means to have this destination address if wireless radio frequency modules is received this answer signal is positioned at effective read range of card reader, so this destination address is recorded; If do not receive answer signal mean that the respective identification card, not in effective read range of card reader, does not now record this destination address; That is to say, be the state that tag card is reflected in address by only being recorded in the tag card in effective read range herein, can certainly carry out by other means the status information of record identification card, repeats no more herein.Up to the present, patrolling and examining of an address completed, next, current destination address is added to 1 and obtain next destination address, then according to the destination address new to this with top identical mode, patrolled and examined, until all addresses in described address realm are detected complete.Can judge whether in the following manner that all addresses are detected complete; judge whether current new destination address is greater than the termination address (maximum address) of described address realm; if; mean to have completed the detection to all addresses; set is 1 now will " to patrol and examine the complement mark position "; patrol and examine end, the address of recording previously forms the status data of tag card in this address realm; Otherwise continue the detection to this fresh target address.
More than describe the detailed process of the tag card in address realm associated with it being carried out status poll or patrolling and examining from processor, the following describes primary processor to each coupled process of from processor, carrying out status poll or patrolling and examining.
Primary processor can a plurality ofly carry out poll from processor to described according to default cycle or mode, obtains described status data from each from processor.Fig. 3 has provided an exemplary flow process of patrolling and examining, and in this example, each is given respectively n the numeral number from 0 to n-1 from processor, refers to a numeral number that certain is concrete from processor.After powering on or resetting, at first to be detectedly from processor numbering N, be set to 0, then judge whether this has completed the work of patrolling and examining to the tag card in its address realm from processor N, for example can judge this " patrolling and examining the complement mark position " from processor, 1 means to patrol and examine to complete if, and 0 means not yet to complete if.
By above judgement, completed patrolling and examining tag card if current from processor N, primary processor should send data request signal from processor N to this, when this will transfer to primary processor from acquired all status datas from processor is received data request signal.In order to reduce data volume, can also be encapsulated and/or squeeze operation data before transmission, and then be transferred to primary processor.After primary processor receives, should be set to (N+1) %n from processor numbering N, wherein % means modulo operation, and n means the sum from processor be connected with primary processor.Next, according to reading from processor N, carrying out state with top identical mode, until all detected complete from processor.Can judge whether in several ways all detected completely from processor, for example can judge whether current up-to-date numbering N equals 0, if mean to have completed all detections from processor, otherwise continue detection from processor N to this.
By above judgement, if current, from processor N, not yet complete the patrolling and examining of tag card, skip this and continue the next one from processor executing state read operation from processor N.
Primary processor, from each from processor, obtaining the status data of tag card, can also be transferred to active or passive mode the host computer be connected with this card reader by the data of acquisition, by host computer, these data is done to further processing.Wherein, the mode of active transmission refers to that described primary processor is transferred to by the described status data obtained the host computer be connected with described card reader automatically in cycle or the mode of presetting, for example, can arrange flexibly as required a numerical value as primary processor the time interval to the host computer uploading data, once the time interval meets this numerical value, primary processor is spontaneous to host computer transmission data.Certainly, these data also can be modified according to the actual requirements.In addition, described passive transmission mode refer to primary processor can be not spontaneous to host computer transmission data, only have when described primary processor is received the request of data from host computer, described primary processor just can be transferred to host computer by the described status data of acquisition.Like this, host computer can be according to the time of self-demand ACTIVE CONTROL data upload, and, send data request signal by the primary processor to card reader periodically, can realize obtaining with specific interval equally the purpose of data.
In order to reduce data volume and communication load, described primary processor can also be first before described status data is transferred to host computer by described status data encapsulation and/or be compressed into Frame, and then by this data frame transfer to host computer.In addition, existing by RS485, TCP/IP, bluetooth or WiFi etc. between the primary processor of card reader and host computer or communication mode that may occur in the future transmits data.
For guaranteeing real-time, each address realm distributed from processor is no more than 2000, when tag card in card reader wireless signal coverage, the wireless radio frequency modules self-emission wireless signal connected from processor can not surpass 500us to receiving the answer signal time, and a polling period amounts to and is no more than 1s.Further, when the quantity from processor exceeds the IO port processing power of primary processor, can, by described primary processor, with described, a plurality ofly from the mode that is connected at least one multiway analog switch between processor, carrying out multiplexed port, such as multiway analog switches such as can adopting CD4067, realize above-mentioned functions.
Inspection type less radio-frequency card reader proposed by the invention can significantly promote the concurrent identification number of tag card, and, by the collaborative work of master and slave processor, can simplify the management to a large amount of tag cards.
Partial content in the technical scheme that in the present invention, each embodiment provides can realize by software programming, and its software program is stored in the storage medium can read, storage medium for example: the hard disk in computing machine, CD or floppy disk.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an inspection type less radio-frequency card reader, is characterized in that, comprising:
Primary processor;
A plurality of from processor, with described primary processor, be connected respectively, each is associated with an address list or address realm from processor, and this address list or address realm are used to indicate the address of at least one tag card to be identified;
A plurality of wireless radio frequency modules; each wireless radio frequency modules is connected from processor with one; from the control of processor, the tag card that is positioned at address above mentioned list or address realm is carried out to status poll at this, and the status data that will at every turn obtain returns to this from processor;
Described primary processor a plurality of carries out poll from processor with cycle of presetting or mode to described, obtains described status data from each from processor.
2. less radio-frequency card reader as claimed in claim 1, is characterized in that,
Described primary processor is transferred to by the described status data obtained the host computer be connected with described card reader automatically in cycle or the mode of presetting.
3. less radio-frequency card reader as claimed in claim 1, is characterized in that,
When described primary processor is received the request of data from host computer, described primary processor is transferred to host computer by the described status data obtained.
4. less radio-frequency card reader as claimed in claim 2 or claim 3, is characterized in that,
Described primary processor before described status data is transferred to host computer first by the encapsulation of described status data and/or be compressed into Frame, then by this data frame transfer to host computer.
5. less radio-frequency card reader as claimed in claim 1, is characterized in that,
Each is described stores described address list or address realm from processor self, or
Each described described address list or address realm of reading from processor from outside.
6. less radio-frequency card reader as claimed in claim 1, is characterized in that,
Preferably, described address list or address realm are distributed by described primary processor.
7. less radio-frequency card reader as claimed in claim 1, is characterized in that, each wireless radio frequency modules is carried out status poll to tag card and specifically comprised:
Described wireless radio frequency modules sends wireless signal to each address in above-mentioned address list or address realm successively, if receive the answer signal that tag card with this address returns, records this address; If do not receive answer signal, continue to send wireless signal to next address, until all addresses in described address list or address realm are detected complete, the address of record forms described status data.
8. less radio-frequency card reader as claimed in claim 1, is characterized in that, described primary processor a plurality ofly carries out poll from processor and specifically comprises described with cycle of presetting or mode:
Described primary processor is coupled to each successively sends request of data from processor, and each will return to primary processor from processor from acquired all status datas receiving this request of data.
9. less radio-frequency card reader as claimed in claim 8, it is characterized in that, each will before acquired all status datas return to primary processor, first all status datas being encapsulated and/or be compressed into Frame, then returns to this Frame to primary processor from processor.
10. less radio-frequency card reader as claimed in claim 3, is characterized in that,
Described primary processor and transmit data by high-speed bus between processor, between described primary processor and host computer by wired mode or wireless way for transmitting data; Described primary processor and/or be single-chip microcomputer from processor; Described wireless radio frequency modules comprises the radio frequency chip of supporting the RFID two-way communication;
When the quantity from processor exceeds the IO port processing power of primary processor, at described primary processor, with described a plurality of from being connected at least one multiway analog switch between processor, carry out multiplexed port.
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| CN201310374470.XA CN103473519B (en) | 2013-08-23 | 2013-08-23 | A kind of inspection type radio frequency card reader |
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| CN201310374470.XA CN103473519B (en) | 2013-08-23 | 2013-08-23 | A kind of inspection type radio frequency card reader |
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Cited By (3)
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| CN104794813A (en) * | 2014-01-16 | 2015-07-22 | 浙江融创信息产业有限公司 | IC card card-issuing system, read-write machine and blacklist and whitelist processing method and device |
| CN107423649A (en) * | 2017-08-02 | 2017-12-01 | 辽宁瑞华实业集团高新科技有限公司 | Search the method and device of card reader |
| CN108600189A (en) * | 2018-04-02 | 2018-09-28 | 合肥美的电冰箱有限公司 | Equipment monitoring system after sale and after sale monitoring method |
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Cited By (5)
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| CN108600189A (en) * | 2018-04-02 | 2018-09-28 | 合肥美的电冰箱有限公司 | Equipment monitoring system after sale and after sale monitoring method |
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