CN101833683A - Electronic label system and working method thereof - Google Patents
Electronic label system and working method thereof Download PDFInfo
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- CN101833683A CN101833683A CN 201010147072 CN201010147072A CN101833683A CN 101833683 A CN101833683 A CN 101833683A CN 201010147072 CN201010147072 CN 201010147072 CN 201010147072 A CN201010147072 A CN 201010147072A CN 101833683 A CN101833683 A CN 101833683A
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Abstract
The invention discloses an electronic label comprising a processing unit, a wireless transmit-receive unit, a power supply unit, a storage unit, a displaying unit, and the like. The electronic label is characterized by being internally provided with a unique identity ID for identifying an electronic shelf label and the number of the labels in the grouping. The invention adopts a novel algorithm which can solve the problem of label collision and effectively improve searching and updating speeds of the label, the working mode of the label is an intermittent dormant state and an activated state, when the label is in a dormant state, other cells are in a closed state, thereby the energy consumption can be reduced to the maximum degree.
Description
[technical field]
The present invention relates to electronic labelling system and system optimization algorithm, relate in particular to a kind of supermarket and megastore's electronic tag and method of work thereof of being applied to.
[background technology]
At present, in the shops such as supermarket or convenience store, adopt the shelf label of papery mostly.The management of shelf label depends on manually, and the pricing information mistake takes place easily.Because the price adjustment of goods merchandise news is to carry out at once, generally requires the accurate and effective rate of whole marked price accounting system.And more the time, manually finish the papery price updating and still have to a certain degree error.
In recent years, electronic shelf label (ESL) system just progressively moves towards practical application, in electronic bin tag system, can be by the extensive stock information of storage such as existing P OS system, carry out the transmission of contents such as price, sales promotion information to client in mode accurately.Thisly change the method that shelf label shows content such as price, incidental error when having avoided manual operation papery shelf label by obtaining the canned data file in real time.In the electronic shelf label content displayed with calculate the price consistent, thereby what guaranteed to pass on to client is information such as correct price and sales promotion.
Number of labels in the shop such as supermarket or convenience store is huge, and is ten hundreds of easily, and a plurality of read write lines of general employing carry out the management of packet partition territory in therefore realizing.Even if like this, single read write line is also often wanted corresponding hundreds of even thousands of labels.Therefore the update efficiency of label also is one of important indicator of system.
Owing to electronic shelf label self, all adopt the form of active label in general the realization, label self comprises parts such as battery, processor, storage unit and display unit.In order to increase the service life as much as possible, label is generally taked the mode of work indirectly, yet occurs a unavoidable collision problem in the system of the existence that has a large amount of labels.And present main anti-collision algorithm is all only at passive label.Some patent also can propose a kind of anti-collision algorithm of correspondence, avoids label to produce the problem of collision, but does not consider the efficient and the optimization problem of algorithm, and this also is a drawback place.
Multiple anti-collision algorithm is arranged at present, mainly be divided into the ALOHA algorithm (ALOHA be a kind of be to be used for handling the multi-user to single channel, at the data link layer media access control sublayer, channel allocation resolution protocol) and tree-like decomposition algorithm.Because tree-like decomposition method makes the identification of some label postpone sometimes may be long, so the ALOHA algorithm is simple and easy to realize etc. that because of having advantage becomes one of most widely used algorithm.
[summary of the invention]
The present invention provides the electronic labelling system that a kind of tag recognition is rapider, function is more powerful for addressing the above problem, and has adopted mode more efficient, that optimized to improve the read-write response time of total system.
The technical scheme that the present invention addresses the above problem is: electronic tag involved in the present invention, comprising processing unit, wireless transmit/receive units, power supply unit, storage unit and display unit etc. partly forms, it is characterized in that electronic tag is built-in is used to identify unique identity ID of this electronic shelf label and the number of tags in the grouping.
Storage unit is a nonvolatile semiconductor memory member, and described processing unit is a low-power scm;
The working method of electronic labelling system may further comprise the steps:
(1) is the unique correspondence of each read write line in all electronic tag registered in advance and the homologous ray in the system; The ID of electronic tag is unique writing before dispatching from the factory, and the electronic tag sum in the grouping can upgrade after installation by the registration sum of read write line according to ESL host data base interior label; Five kinds of duties of electronic tag inner setting: dormancy, time slot inquiry, time slot adjustment, data transmission and semidormancy;
(2) enter dormant state after the electronic tag registration; In the overwhelming majority time, label is in dormant state, and this moment, other unit all were in closed condition except processing unit;
(3) whether electronic tag inter-process unit judges outside exists wake-up signal;
If a) exist, then enter into the time slot query State, i.e. step 4;
B) if there is no, then keep dormancy, repeating step 2;
(4) electronic shelf label wakes the back up and adopts the frame slot method with the communication between the read write line, after label is waken up, enters the inquiry of first frame, and this moment, frame counter put 1;
(5) label not immediately but random wait just communicate after a period of time with read write line, this random time T depends on single tag update essential time t of institute and number of tags m, value is T=kt, and (0＜k＜m), k is produced at random by label inter-process unit;
(6) when the stand-by period, condition satisfied, electronic shelf label is attempted communicating with read write line, at this moment
If a) communication bumps, cause the effective response signal of in call duration time, not receiving read write line, then entering time slot adjustment state, i.e. step 7;
B), then enter step 8 if communication process does not bump;
(7) this moment, label entered time slot adjustment state.At first frame counter is increased by 1, and whether the judgment frame counting is less than preset value C, the choosing value of C has difference according to intrasystem number of tags difference, preferably between 3～8;
If a) less than, then change number of labels in label inter-process unit does not change the storing value in the storage unit this moment, advances its amount of duplicating of change, preferred value is m '=(0.6～0.7) m;
B), then keep the m value constant if be not less than; The m value is adjusted the back label and is at first waited for (m-k) t time, returns the search of step 4 beginning next frame then;
(8) do not bump between label, then enter into data transmission state, at this moment
If if a) exchanges data success, the frame count zero clearing, label returns step 2 simultaneously, waits for and waking up next time;
B) if step 5 is then returned in the exchanges data failure, handle by the method that bumps identical, when the accumulative total frequency of failure surpasses pre-determined number m, then abandon this time upgrading, label returns step 2;
The invention has the beneficial effects as follows: adopt the ALOHA algorithm effectively to avoid the label collision problem, can improve the search and the renewal speed of label; The working method of label is dormancy discontinuously and state of activation, and when label was in dormant state, other unit all were in closed condition, can farthest reduce energy consumption.
[description of drawings]
Fig. 1 is an electronic tag workflow diagram of the present invention;
Fig. 2 is that five kinds of duties of electronic tag of the present invention transform synoptic diagram.
[embodiment]
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.
Electronic tag involved in the present invention, comprising processing unit, wireless transmit/receive units, power supply unit, storage unit and display unit etc. partly forms, it is characterized in that electronic tag is built-in is used to identify unique identity ID of this electronic shelf label and the number of tags in the grouping.
Storage unit is a nonvolatile semiconductor memory member, and described processing unit is a low-power scm;
The working method of electronic labelling system may further comprise the steps:
1, is the unique correspondence of each read write line in all electronic tag registered in advance and the homologous ray in the system; The ID of electronic tag is unique writing before dispatching from the factory, and the electronic tag total data in the grouping can be upgraded after installation by the registration sum of read write line according to ESL host data base interior label; Five kinds of duties of electronic tag inner setting: dormancy, time slot inquiry, time slot adjustment, data transmission and semidormancy;
2, enter dormant state after the electronic tag registration; In the overwhelming majority time, label is in dormant state, and this moment, other unit all were in closed condition except processing unit;
3, whether electronic tag inter-process unit judges outside exists wake-up signal;
If a exists, then enter into the time slot query State, i.e. step 4;
B, if there is no then keeps dormancy, repeating step 2;
4, electronic shelf label wakes the back up and adopts the frame slot method with the communication between the read write line, after label is waken up, enters the inquiry of first frame, and this moment, frame counter put 1;
5, label not immediately but random wait just communicate after a period of time with read write line.This random time T depends on single tag update essential time t of institute and number of tags m, and value is T=kt, and (0＜k＜m), k is produced at random by label inter-process unit;
6, when the stand-by period, condition satisfied, electronic shelf label is attempted communicating with read write line, at this moment
If a) communication bumps, cause the effective response signal of in call duration time, not receiving read write line, then enter time slot and adjust state, i.e. step 7;
B), then enter step 8 if communication process does not bump;
7, label entered time slot and adjusted state this moment: at first frame counter is increased by 1, and whether the judgment frame counting is less than preset value C, the choosing value of C has difference according to intrasystem number of tags difference, preferably between 3～8;
If a) less than, label inter-process unit change number of labels then, do not change the storing value in the storage unit this moment, only changes its amount of duplicating, preferred value is m '=(0.6～0.7) m;
B), then keep the m value constant if be not less than; The m value is adjusted the back label and is at first waited for (m-k) t time, returns the search of step 4 beginning next frame then;
8, do not bump between label, then enter into data transmission state, at this moment
If if a) exchanges data success, the frame count zero clearing, label returns step 2 simultaneously, waits for and waking up next time;
B) if step 5 is then returned in the exchanges data failure, handle by the method that bumps identical; When the accumulative total frequency of failure surpasses pre-determined number m, then to abandon this time upgrading, label returns step 2;
According to the theory of probability theory, if there be N label, be divided into n time slot at each cycle period, then exist the probability of a label to be in the single time slot:
When number of tags must be, seek out maximal efficiency
Therefore, can be similar to and think, number of tags equates it is most effective with timeslot number, and this moment, recognition efficiency was approximately
When n＞＞1, the value of B is between 0.36-0.37.
According to above theory and algorithm, working method of the present invention, search and renewal speed that can faster raising label allow electronic labelling system that read write line is carried out grouping management, and the label in the system is all write ID uniquely, and registers in system.
Described electronic tag adopts the recycle design work of dormant and awakening-dormancy, and in the overwhelming majority time, label is in sleep state, and this moment, other unit all were in closed condition except processing unit; When label be activated wake up after, processing unit is opened wireless transmit/receive units, sets according to pre-defined algorithm, receives information that read write line sends and at appropriate update displayed location contents on opportunity; Finish displaying contents renewal back label and enter dormant state once more, and wait for and waking up next time.
Described pre-defined algorithm is according to the ALOHA algorithm principle, adopts the mode of the response time of separation tags, is that label sends in different time slots and replys, in case bump, generally takes to dodge principle, waits for that next cycle period transmission replys.
The tag activation wakeup process can adopt detecting circuit triggering or label cycle to revive and inquire about the mode of read write line wake-up signal, and electronic shelf label wakes the back up and adopts the frame slot method with the communication between the read write line; After label is waken up, not immediately but random wait just communicate after a period of time with read write line, this random time depends on single essential time of tag update institute and number of tags.
After communication bumped, the change of label inter-process unit participated in the number of labels of inquiry, reduced the number of time slot of next frame.Take this method can less whole query time, therefore can raise the efficiency.
The maximum number of times C that adjusts of one time slot is set, and the choosing value of C has difference according to intrasystem number of tags difference, preferably between 3～8; This choosing value is used to prevent that timeslot number under the small probability situation is very few and influence the whole updating speed of label;
Not conflict then enters data transmission state between a certain electronic shelf label is with other labels, finishes after the exchanges data simultaneously that label enters dormant state once more, waits for and waking up next time.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. electronic tag, comprising processing unit, wireless transmit/receive units, power supply unit, storage unit and display unit etc. partly forms, it is characterized in that electronic tag is built-in is used to identify unique identity ID of this electronic shelf label and the number of tags in the grouping.
2. according to the described electronic tag of claim 1, it is characterized in that described storage unit is a nonvolatile semiconductor memory member, described processing unit is a low-power scm.
3. according to the working method of the described electronic tag of claim 1, it is characterized in that described working method may further comprise the steps:
(1) is the unique correspondence of each read write line in all electronic tag registered in advance and the homologous ray in the system; The ID of electronic tag is unique writing before dispatching from the factory, and the electronic tag sum in the grouping can upgrade after installation by the registration sum of read write line according to ESL host data base interior label; Five kinds of duties of electronic tag inner setting: dormancy, time slot inquiry, time slot adjustment, data transmission and semidormancy;
(2) enter dormant state after the electronic tag registration; In the overwhelming majority time, label is in dormant state, and this moment, other unit all were in closed condition except processing unit;
(3) whether electronic tag inter-process unit judges outside exists wake-up signal;
If a) exist, then enter into the time slot query State, i.e. step 4;
B) if there is no, then keep dormancy, repeating step 2;
(4) electronic shelf label wakes the back up and adopts the frame slot method with the communication between the read write line, after label is waken up, enters the inquiry of first frame, and this moment, frame counter put 1;
(5) label not immediately but random wait just communicate after a period of time with read write line, this random time T depends on single tag update essential time t of institute and number of tags m, value is T=kt, and (0＜k＜m), k is produced at random by label inter-process unit;
(6) when the stand-by period, condition satisfied, electronic shelf label is attempted communicating with read write line, at this moment
If a) communication bumps, cause the effective response signal of in call duration time, not receiving read write line, then enter time slot and adjust state, i.e. step 7;
B), then enter step 8 if communication process does not bump;
(7) label entered time slot and adjusted state this moment: at first frame counter is increased by 1, and whether the judgment frame counting is less than preset value C, the choosing value of C has difference according to intrasystem number of tags difference, preferably between 3～8;
If a) less than, label inter-process unit change number of labels then, do not change the storing value in the storage unit this moment, only changes its amount of duplicating, preferred value is m '=(0.6～0.7) m;
B), then keep the m value constant if be not less than; The m value is adjusted the back label and is at first waited for (m-k) t time, returns the search of step 4 beginning next frame then;
(8) do not bump between label, then enter into data transmission state, at this moment
If if a) exchanges data success, the frame count zero clearing, label returns step 2 simultaneously, waits for and waking up next time;
B) if step 5 is then returned in the exchanges data failure, handle by the method that bumps identical; When the accumulative total frequency of failure surpasses pre-determined number m, then to abandon this time upgrading, label returns step 2.
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| CN 201010147072 CN101833683A (en) | 2010-04-08 | 2010-04-08 | Electronic label system and working method thereof |
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| CN 201010147072 CN101833683A (en) | 2010-04-08 | 2010-04-08 | Electronic label system and working method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592524A (en) * | 2011-12-30 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Electronic tag and content updating method and content updating system thereof |
| CN102664644A (en) * | 2012-04-11 | 2012-09-12 | 北京汉朔科技有限公司 | Self-awakening communication method of electronic shelf label systems |
| CN103198276A (en) * | 2013-02-27 | 2013-07-10 | 杭州朗鸿科技有限公司 | Electronic goods shelf label system communication method |
| CN104376488A (en) * | 2013-11-14 | 2015-02-25 | 天津职业技术师范大学 | Low-power-consumption electronic commodity price label and control method thereof |
| WO2015032028A1 (en) * | 2013-09-03 | 2015-03-12 | Hong Kong R&D Centre for Logistics and Supply Chain Management Enabling Technologies Limited | System and method for controlling identification tags |
| CN109831753A (en) * | 2019-01-18 | 2019-05-31 | 重庆物奇科技有限公司 | Electronics price tag, gateway and electronics price tag system |
| CN112351479A (en) * | 2019-08-09 | 2021-02-09 | 浙江汉朔电子科技有限公司 | Electronic price tag communication system, method and device |
| US11977947B2 (en) | 2019-08-09 | 2024-05-07 | Hanshow Technology Co., Ltd. | Electronic shelf label communication system, method and apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592524A (en) * | 2011-12-30 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Electronic tag and content updating method and content updating system thereof |
| CN102664644A (en) * | 2012-04-11 | 2012-09-12 | 北京汉朔科技有限公司 | Self-awakening communication method of electronic shelf label systems |
| CN103198276A (en) * | 2013-02-27 | 2013-07-10 | 杭州朗鸿科技有限公司 | Electronic goods shelf label system communication method |
| WO2015032028A1 (en) * | 2013-09-03 | 2015-03-12 | Hong Kong R&D Centre for Logistics and Supply Chain Management Enabling Technologies Limited | System and method for controlling identification tags |
| CN104376488A (en) * | 2013-11-14 | 2015-02-25 | 天津职业技术师范大学 | Low-power-consumption electronic commodity price label and control method thereof |
| CN109831753A (en) * | 2019-01-18 | 2019-05-31 | 重庆物奇科技有限公司 | Electronics price tag, gateway and electronics price tag system |
| CN109831753B (en) * | 2019-01-18 | 2022-05-03 | 重庆物奇科技有限公司 | Electronic price tag, gateway and electronic price tag system |
| CN112351479A (en) * | 2019-08-09 | 2021-02-09 | 浙江汉朔电子科技有限公司 | Electronic price tag communication system, method and device |
| US11977947B2 (en) | 2019-08-09 | 2024-05-07 | Hanshow Technology Co., Ltd. | Electronic shelf label communication system, method and apparatus |
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Application publication date: 20100915 |