CN104680101A - Method for controlling label identification distance - Google Patents
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- CN104680101A CN104680101A CN201310646120.4A CN201310646120A CN104680101A CN 104680101 A CN104680101 A CN 104680101A CN 201310646120 A CN201310646120 A CN 201310646120A CN 104680101 A CN104680101 A CN 104680101A
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Abstract
The invention discloses a method for controlling a label identification distance. The method comprises the following steps: configuring power regulation accuracy of different protocol labels; according to a target distance and the power regulation accuracy, controlling transmitting power of the labels so as to enable the coverage range of the labels to be consistent. The invention also discloses a reader and a system for controlling the label identification distance, which comprises the reader. The method, which enables the coverage range of the labels to be consistent by configuring the power regulation accuracy of different protocol labels and controlling the transmitting power of the labels according to the target distance and the power regulation accuracy, disclosed by the invention has the beneficial effects that radio frequency labels of different protocols can be accurately identified in the same coverage range; unnecessary label misreading is avoided when improving the identification efficiency.
Description
Technical field
The present invention relates to technical field of RFID, particularly relate to a kind of method of abstract factory decipherment distance.
Background technology
Radio-frequency recognition system mainly comprises RFID tag (abbreviation label) and reader, it is a kind of contactless automatic identification technology, automatically identify destination object by radiofrequency signal and obtain related data, and the work of identification need not manual intervention, various rugged surroundings can be worked in, as numerous areas such as storage, logistics, traffic, it is one of most important application technology in following Internet of Things.
Current ultrahigh-frequency radio-frequency tag Application comparison widely agreement has ISO18000-6B and EPC C1G2(Electronic Product Code, product electronic code; This agreement is also referred to as ISO18000-6C) two kinds, in the application scenarios of reality, various protocols label may be related to and be present in problem in same application system simultaneously.Because the sensitivity of different label is variant, the such as sensitivity of ISO6B label is low, EPC protocol label highly sensitive, so the distance that different label is identified has very large difference.Therefore need the application scenarios of strict control decipherment distance as in parking lot, charge station at some, need to identify fore-aft vehicle exactly, when considering discrimination, its scope covered can not be too wide, otherwise just likely the vehicle error after first reading is identified as vehicle above.In addition, current reader system operationally can only send a kind of power, if having two or more protocol label in same environment, but still adopts same a kind of power, be then difficult to realize the unified object controlled of multiple tag recognition distance.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of control method of tag recognition distance, reader and system, and the radio-frequency (RF) tag being intended to solve different agreement can not carry out the problem accurately identified in same coverage.
The invention discloses a kind of method of abstract factory decipherment distance, comprise the following steps:
The power adjustments precision of configuration different agreement label;
According to target range and described power adjustments precision, control the emissive power of described label, make the coverage of described label consistent.
Preferably, describedly control the emissive power of described label according to target range and described power adjustments precision, the consistent step of the coverage of described label specifically comprised:
Test the decipherment distance of described label;
Described label being placed on described target range place respectively, according to described decipherment distance, with described power adjustments precision for regulating step-length, regulating the emissive power of described label respectively;
Check the critical distance that described label can be identified, and record the transmission power level of described label in described critical distance.
Preferably, describedly control the emissive power of described label according to target range and described power adjustments precision, after making the consistent step of the coverage of described label, also comprise step:
Receive the recognition instruction of the described label that background devices sends, identify described label and perform associative operation.
Preferably, the recognition instruction of the described label that described reception background devices sends, identifies described label and the step performing the associative operation of business need specifically comprises:
The recognition instruction that the described label that reception background devices sends according to preset interval duration is corresponding;
According to described recognition instruction, identify corresponding described label and obtain the transmission power level of described label in described critical distance, according to described transmission power level transmitted power;
After time delay preset time, send the signal of eating dishes without rice or wine of described label to background devices; And complete the associative operation of described label in background devices after, stop transmitted power.
The present invention is by the power adjustments precision of configuration different agreement label, according to target range and power adjustments precision, the emissive power of abstract factory makes the method that the coverage of label is consistent, the radio-frequency (RF) tag with different agreement can carry out the beneficial effect of accurately identification in same coverage, while improving recognition efficiency, avoid unnecessary label and misread.
Accompanying drawing explanation
Fig. 1 is the control method first embodiment schematic flow sheet of tag recognition distance of the present invention;
Fig. 2 is the coverage schematic diagram of two kinds of different agreement labels;
Fig. 3 controls different agreement label to have same identification distance one embodiment schematic flow sheet in the control method of tag recognition distance of the present invention;
Fig. 4 is the control method second embodiment schematic flow sheet of tag recognition distance of the present invention;
Fig. 5 carries out identification one embodiment schematic flow sheet to label in the control method of tag recognition distance of the present invention;
Fig. 6 is reader first example structure schematic diagram of the present invention;
Fig. 7 is control module one example structure schematic diagram in reader of the present invention;
Fig. 8 is reader second example structure schematic diagram of the present invention;
Fig. 9 is label identification module one example structure schematic diagram in reader of the present invention;
Figure 10 is the control system one example structure schematic diagram of tag recognition distance of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
With reference to the control method first embodiment schematic flow sheet that Fig. 1, Fig. 1 are tag recognition distance of the present invention; As shown in Figure 1, the control method of tag recognition distance of the present invention specifically comprises the following steps:
The power adjustments precision of step S01, configuration different agreement label;
The method of abstract factory decipherment distance normally regulates the transmission power level of this label, when regulating the transmission power level of label, needs to configure certain power adjustments precision; If power adjustments precision is excessive, then can affect the degree of accuracy of tag recognition distance; If power adjustments precision is too small, then governing speed is slow; Therefore, in actual applications, need to configure certain power adjustments precision according to concrete application scenarios.In a preferred embodiment, the precision of power adjustments is at least 1DB, and this convenience is to adjustment of transmitted tag power and control flow is simple, and speed is fast, the configuration concurrency that can complete power within ms level send, can not affect check normally, the business operation such as read-write.
Step S02, according to target range and described power adjustments precision, control the emissive power of described label, make the coverage of described label consistent.
Current reader system operationally can only send a kind of power, if having two kinds of protocol labels in the middle of an environment, but only adopts same a kind of power, be then difficult to the object realizing multiple tag recognition distance being unified to control.The method of abstract factory decipherment distance is generally the emissive power regulating label, and the transmission power level of label is larger, and the decipherment distance of label is far away, but can cause misreading of the label of real needs identification; If the transmission power level of label is too little, the difference due to extraneous environment-identification then may bring the skip of label, therefore must select suitable transmission power level in the deployment of label.
This just needs the adjustment carrying out the emissive power of label according to the requirement of reality; During practical operation, can the power adjustments precision of target range required for concrete scene reality and setting, control the emissive power of different agreement label, and then control the decipherment distance of different agreement label, thus make the label of different agreement in same application scenarios, identical coverage can be had.This ensure that the different agreement label needed for Same Scene is all limited in same identified region, ensure that the label only entering into this fixed area just can be identified.
With the citing of the label of two kinds of relatively more conventional at present different agreement EPC and ISO6B, be the coverage schematic diagram of two kinds of different agreement labels with reference to Fig. 2, Fig. 2; Fig. 2 a is the coverage of two kinds of labels without adjustment, and Fig. 2 b is the coverage of two kinds of labels after utilizing the control method of tag recognition distance of the present invention to adjust; As can be seen here, after adjustment, the coverage of two kinds of labels is consistent; So after adjustment, because the coverage of the two is consistent, therefore there will not be the label caused because the two decipherment distance has larger difference to be identified or the phenomenon of skip, so after adjustment, the label of EPC and ISO6B can use in same environment by mistake.
The present embodiment is by the power adjustments precision of configuration different agreement label, according to target range and power adjustments precision, the emissive power of abstract factory makes the method that the coverage of label is consistent, the radio-frequency (RF) tag with different agreement can carry out the beneficial effect of accurately identification in same coverage, and governing speed is fast.
Reference Fig. 3, Fig. 3 control different agreement label to have same identification distance one embodiment schematic flow sheet in the control method of tag recognition distance of the present invention; The present embodiment is only described specifically step S02, and other steps involved by the control method of tag recognition distance of the present invention please refer to the specific descriptions of related embodiment, do not repeat them here.
As shown in Figure 3, in the control method of tag recognition distance of the present invention, step S02, according to target range and described power adjustments precision, control the emissive power of described label, the consistent step of the coverage of described label specifically comprised:
Step S11, test the decipherment distance of described label;
Before carrying out the conforming adjustment of different agreement label coverage, first the ultimate range that each protocol label can identify will first be tested, for the follow-up coverage to each label is prepared, the target range formulated is avoided to exceed the maximum decipherment distance of certain or some protocol labels.
Step S12, described label being placed on described target range place respectively, according to described decipherment distance, with described power adjustments precision for regulating step-length, regulating the emissive power of described label respectively;
After test obtains the decipherment distance of each protocol label, respectively the label of different agreement is placed on the position of target range, according to the maximum decipherment distance of each protocol label, with the power adjustments precision of configuration for adjustment step-length, adjust the emissive power of each protocol label, and then control the decipherment distance of each protocol label.
Step S13, check the critical distance that described label can be identified, and record the transmission power level of described label in described critical distance.
While the emissive power of each protocol label is adjusted, need the critical distance of checking that each protocol label can be identified; Particularly, with one of them protocol label for benchmark, regulate register value corresponding to this first protocol label according to target range thus control the emissive power of this label, after the maximum decipherment distance of this first label and coverage reach requirement, record this first label transmission power level now; Then, another protocol label is also placed on target range place, by regulating power value, the decipherment distance making the distance of this second protocol tag recognition reach identical with the first label, records this second label transmission power level now; Adopt and use the same method, carry out the acquisition of the transmission power level of other protocol labels follow-up.This ensure that the different agreement label needed for Same Scene is all limited in same identified region, ensure that the label only entering into this fixed area just can be identified.
For EPC agreement and ISO6B protocol label, step S11 is specifically described to step S13.
EPC protocol label is placed into target range place, regulates transmission power level that EPC protocol label is identified.Emissive power is reduced 1DB, checks whether EPC protocol label can also be identified, if could; would continue the transmission power level reducing EPC protocol label, until just check less than.Record the performance number of the EPC agreement of now background interface configuration.The label of ISO6B is placed into target range place, the emissive power of ISO6B protocol label is set to the power identical with EPC protocol label, because the sensitivity of the remolding sensitivity EPC protocol label of ISO6B label is low, so now check less than ISO6B protocol label.The emissive power of ISO6B protocol label is increased 1DB, checks whether ISO6B protocol label can please be put, if not, continue to increase power, until just just give a hint clearly.Record the transmission power level of the ISO6B protocol label of configuration corresponding to now backstage.Now, the distance of ISO6B protocol label and EPC protocol label has just all just been limited in target area, and this provides a great convenience the deployment of the system such as parking lot, charge station.
The present embodiment passes through according to target range and power adjustments precision, and the emissive power of abstract factory makes the method that the coverage of label is consistent, and the radio-frequency (RF) tag with different agreement can carry out the beneficial effect of accurately identification in same coverage.
With reference to the control method second embodiment schematic flow sheet that Fig. 4, Fig. 4 are tag recognition distance of the present invention; The difference of control method first embodiment of the present embodiment and tag recognition distance of the present invention increase only step S03; The present embodiment is only described specifically step S03, and other steps involved by the control method of tag recognition distance of the present invention, please refer to the specific descriptions of related embodiment, do not repeat them here.
As shown in Figure 4, the control method of tag recognition distance of the present invention in step S02, according to target range and described power adjustments precision, control the emissive power of described label, also comprises step after making the consistent step of the coverage of described label:
The recognition instruction of the described label that step S03, reception background devices send, identifies described label and performs associative operation.
After the coverage determining each protocol label, owing to supporting the tag reader of different agreement in same application scenarios, so background devices needs the instruction sending different agreement according to preset time interval, after reader gets the label of corresponding agreement, this label is performed to the operations such as the read-write of information.Label due to different agreement is all limited in same identified region, and therefore, the label only entering this fixed area can be identified.
The recognition instruction of described label that the present embodiment sends by receiving background devices, identifies described label and performs the method for associative operation, having the unnecessary beneficial effect misread avoiding label while ensure that tag recognition efficiency.
In the control method of tag recognition distance of the present invention, identification one embodiment schematic flow sheet is carried out to label with reference to Fig. 5, Fig. 5; The present embodiment is only described specifically step S03, and other steps involved by the control method of tag recognition distance of the present invention, please refer to the specific descriptions of related embodiment, do not repeat them here.
As shown in Figure 5, in the control method of tag recognition distance of the present invention, step S03, receive the recognition instruction of described label that background devices sends, identify described label and the step performing associative operation specifically comprises:
The recognition instruction that the described label that step S21, reception background devices send according to preset interval duration is corresponding;
Owing to supporting the tag reader of different agreement in same application scenarios, so background devices needs the recognition instruction sending different agreement according to preset time interval, reader receives this recognition instruction, for the business operation of follow-up execution corresponding label is prepared.
Step S22, according to described recognition instruction, identify that corresponding described label also obtains the transmission power level of described label in described critical distance, according to described transmission power level transmitted power;
Reader, according to the recognition instruction received, by tag recognition corresponding for this recognition instruction out, meanwhile, obtains this label at transmission power level corresponding to critical distance; After getting this transmission power level, reader starts transmitted power according to this transmission power level.
After step S23, time delay preset time, send the signal of eating dishes without rice or wine of described label to background devices; And complete the associative operation of described label in background devices after, stop transmitted power.
The duration that time delay is certain, until the radio-frequency power sent is stablized, now, reader sends the signal of eating dishes without rice or wine of protocol label corresponding to this recognition instruction to background devices; Background devices is according to this signal of eating dishes without rice or wine, and transmit operation instruction is to reader, and the operational order that reader sends according to background devices, carries out the operations such as the read-write of business need to this protocol label.After completing aforesaid operations, reader stops power sending.After background devices does not receive the power of reader transmission, just learn that reader completes the business operation to this protocol label, now, background devices sends the recognition instruction of next protocol label.Circulation like this performs step S21 to step S23, till backstage issues and ceases and desist order.
The present embodiment is by receiving the recognition instruction of the described label of background devices transmission, identify described label and perform the method for associative operation, there is the unnecessary beneficial effect misread avoiding label while ensure that tag recognition efficiency, further increase the recognition efficiency of label.
Reference Fig. 6, Fig. 6 are reader first example structure schematic diagram of the present invention; As shown in Figure 6, reader of the present invention comprises:
Configuration module 01, for configuring the power adjustments precision of different agreement label;
The decipherment distance of abstract factory normally regulates the transmission power level of this label, and when regulating the transmission power level of label, configuration module 01 needs to configure certain power adjustments precision; If power adjustments precision is excessive, then can affect the degree of accuracy of tag recognition distance; If power adjustments precision is too small, then governing speed is slow; Therefore, in actual applications, configuration module 01 needs to configure certain power adjustments precision according to concrete application scenarios.In a preferred embodiment, the precision of the power adjustments that configuration module 01 configures is at least 1DB, and this convenience is to adjustment of transmitted tag power and control flow is simple, and speed is fast, the configuration concurrency that can complete power within ms level send, can not affect check normally, the business operation such as read-write.
Control module 02, for according to target range and described power adjustments precision, controls the emissive power of described label, makes the coverage of described label consistent.
Current reader system operationally can only send a kind of power, if having two kinds of protocol labels in the middle of an environment, but only adopts same a kind of power, be then difficult to the object realizing multiple tag recognition distance being unified to control.The decipherment distance of abstract factory is generally the emissive power regulating label, and the transmission power level of label is larger, and the decipherment distance of label is far away, but can cause misreading of the label of real needs identification; If the transmission power level of label is too little, the difference due to extraneous environment-identification then may bring the skip of label, therefore must select suitable transmission power level in the deployment of label.
This adjustment with regard to needing control module 02 to carry out the emissive power of label according to the requirement of reality; During practical operation, control module 02 can the power adjustments precision of target range required for concrete scene reality and setting, control the emissive power of different agreement label, and then control the decipherment distance of different agreement label, thus make the label of different agreement in same application scenarios, identical coverage can be had.This ensure that the different agreement label needed for Same Scene is all limited in same identified region, ensure that the label only entering into this fixed area just can be identified.Concrete adjustment process please refer to the specific descriptions of embodiment described in Fig. 2, does not repeat them here.
The present embodiment is by the power adjustments precision of configuration different agreement label, according to target range and power adjustments precision, the emissive power of abstract factory makes the coverage of label consistent, the radio-frequency (RF) tag with different agreement can carry out the beneficial effect of accurately identification in same coverage, and governing speed is fast.
Reference Fig. 7, Fig. 7 are control module one example structure schematic diagram in reader of the present invention; The present embodiment is only further described control module 02, and other modules involved by reader of the present invention please refer to the specific descriptions of related embodiment, do not repeat them here.
As shown in Figure 7, in reader of the present invention, control module 02 specifically comprises:
Distance test unit 021, for testing the decipherment distance of described label;
Before carrying out the conforming adjustment of different agreement label coverage, first distance test unit 021 first will test the ultimate range that each protocol label can identify, for the follow-up coverage to each label is prepared, the target range formulated is avoided to exceed the maximum decipherment distance of certain or some protocol labels.
Power adjustment unit 022, for described label is placed on described target range place respectively, according to described decipherment distance, with described power adjustments precision for regulating step-length, regulates the emissive power of described label respectively;
After distance test unit 021 tests the decipherment distance obtaining each protocol label, the label of different agreement is placed on the position of target range by power adjustment unit 022 respectively, according to the maximum decipherment distance of each protocol label, with the power adjustments precision of configuration for adjustment step-length, adjust the emissive power of each protocol label, and then control the decipherment distance of each protocol label.
Performance number acquiring unit 023, for checking the critical distance that described label can be identified, and records the transmission power level of described label in described critical distance.
Power adjustment unit 022 is while adjusting the emissive power of each protocol label, and performance number acquiring unit 023 needs the critical distance of checking that each protocol label can be identified; Particularly, performance number acquiring unit 023 with one of them protocol label for benchmark, regulate register value corresponding to this first protocol label according to target range thus control the emissive power of this label, after the maximum decipherment distance of this first label and coverage reach requirement, record this first label transmission power level now; Then, another protocol label is also placed on target range place by performance number acquiring unit 023, and by regulating power value, the decipherment distance making the distance of this second protocol tag recognition reach identical with the first label, records this second label transmission power level now; Adopt and use the same method, performance number acquiring unit 023 carries out the acquisition of the transmission power level of other protocol labels follow-up.This ensure that the different agreement label needed for Same Scene is all limited in same identified region, ensure that the label only entering into this fixed area just can be identified.
For EPC agreement and ISO6B protocol label, the control procedure of control module 02 is specifically described.
After testing at distance test unit 021 decipherment distance obtaining EPC agreement and ISO6B protocol label, EPC protocol label is placed into target range place by power adjustment unit 022, regulates transmission power level that EPC protocol label is identified.Emissive power is reduced 1DB by power adjustment unit 022, performance number acquiring unit 023 checks whether EPC protocol label can also be identified, if can, power adjustment unit 022 continues the transmission power level reducing EPC protocol label, until just check less than.Performance number acquiring unit 023 records the performance number of the EPC agreement of now background interface configuration.The label of ISO6B is placed into target range place by power adjustment unit 022, the emissive power of ISO6B protocol label is set to the power identical with EPC protocol label, because the sensitivity of the remolding sensitivity EPC protocol label of ISO6B label is low, so now performance number acquiring unit 023 is checked less than ISO6B protocol label.The emissive power of ISO6B protocol label is increased 1DB by power adjustment unit 022, performance number acquiring unit 023 checks whether ISO6B protocol label can please be put, if not, power adjustment unit 022 continues to increase power, until performance number acquiring unit 023 is just just given a hint clearly.Performance number acquiring unit 023 records the transmission power level of the ISO6B protocol label of configuration corresponding to now backstage.Now, the distance of ISO6B protocol label and EPC protocol label has just all just been limited in target area, and this provides a great convenience the deployment of the system such as parking lot, charge station.
The present embodiment passes through according to target range and power adjustments precision, and the emissive power of abstract factory makes the coverage of label consistent, and the radio-frequency (RF) tag with different agreement can carry out the beneficial effect of accurately identification in same coverage.
Reference Fig. 8, Fig. 8 are reader second example structure schematic diagram of the present invention; The difference of the present embodiment and reader of the present invention first embodiment increase only tag recognition module 03; The present embodiment is only described specifically tag recognition module 03, and other modules involved by reader of the present invention please refer to the specific descriptions of related embodiment, do not repeat them here.
As shown in Figure 8, reader of the present invention also comprises:
Tag recognition module 03, for receiving the recognition instruction of the described label that background devices sends, identifying described label and performing associative operation.
Determine the coverage of each protocol label in control module 02 after, owing to supporting the tag reader of different agreement in same application scenarios, so background devices needs the instruction sending different agreement according to preset time interval, after the tag recognition module 03 of reader gets the label of corresponding agreement, this label is performed to the operations such as the read-write of information.Label due to different agreement is all limited in same identified region, and therefore, the label only entering this fixed area can be identified.
The present embodiment, by receiving the recognition instruction of the described label of background devices transmission, identifies described label and performs associative operation to have the unnecessary beneficial effect misread avoiding label while ensure that tag recognition efficiency.
Reference Fig. 9, Fig. 9 are label identification module one example structure schematic diagram in reader of the present invention; The present embodiment is only further described tag recognition module 03, and other modules involved by reader of the present invention please refer to the specific descriptions of related embodiment, do not repeat them here.
As shown in Figure 9, in reader of the present invention, tag recognition module 03 specifically comprises:
Instruction reception unit 031, for receiving recognition instruction corresponding to described label that background devices sends according to preset interval duration;
Owing to supporting the tag reader of different agreement in same application scenarios, so background devices needs the recognition instruction sending different agreement according to preset time interval, the instruction reception unit 031 of reader receives this recognition instruction, for the business operation of follow-up execution corresponding label is prepared.
Tag processes unit 032, for according to described recognition instruction, identifies corresponding described label and obtains the transmission power level of described label in described critical distance, according to described transmission power level transmitted power; After time delay preset time, send the signal of eating dishes without rice or wine of described label to background devices; And complete the associative operation of described label in background devices after, stop transmitted power.
The recognition instruction that tag processes unit 032 receives according to instruction reception unit 031, by tag recognition corresponding for this recognition instruction out, meanwhile, obtains this label at transmission power level corresponding to critical distance; After getting this transmission power level, tag processes unit 032 starts transmitted power according to this transmission power level.The duration that time delay is certain, until the radio-frequency power sent is stablized, now, tag processes unit 032 sends the signal of eating dishes without rice or wine of protocol label corresponding to this recognition instruction to background devices; Background devices is according to this signal of eating dishes without rice or wine, and transmit operation instruction is to reader, and the operational order that tag processes unit 032 sends according to background devices, carries out the operations such as the read-write of business need to this protocol label.After completing aforesaid operations, tag processes unit 032 stops power sending.After background devices does not receive the power of reader transmission, just learn that reader completes the business operation to this protocol label, now, background devices sends the recognition instruction of next protocol label.Circulation like this, till backstage issues and ceases and desist order.
The present embodiment is by receiving the recognition instruction of the described label of background devices transmission, identify described label and perform associative operation, there is the unnecessary beneficial effect misread avoiding label while ensure that tag recognition efficiency, further increase the recognition efficiency of label.
With reference to the control system one example structure schematic diagram that Figure 10, Figure 10 are tag recognition distance of the present invention.As shown in Figure 10, the control system of tag recognition distance of the present invention comprises background devices 100; Also comprise above-mentioned reader 200.Background devices 100 and reader 200 carry out alternately, completing the identification to label.The specific descriptions of described background devices 100 and reader 200 be please refer to the specific descriptions of above-mentioned related embodiment, do not repeat them here.
Background devices 100 described in the embodiment of the present invention comprises all background devices that backstage computer, background controller etc. can perform above-mentioned background devices function, and the concrete form of the embodiment of the present invention to background devices 100 does not limit.
The present embodiment is by the power adjustments precision of reader configuration different agreement label, according to target range and power adjustments precision, the emissive power of abstract factory makes the coverage of label consistent; And carry out the identification of different agreement label alternately with backstage, the radio-frequency (RF) tag with different agreement can carry out the beneficial effect of accurately identification in same coverage, while ensure that tag recognition efficiency, avoids and misreads the unnecessary of label.
The foregoing is only the preferred embodiments of the present invention; not thereby its scope of the claims is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; directly or indirectly be used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a method for abstract factory decipherment distance, is characterized in that, comprises the following steps:
The power adjustments precision of configuration different agreement label;
According to target range and described power adjustments precision, control the emissive power of described label, make the coverage of described label consistent.
2. the method for claim 1, is characterized in that, describedly controls the emissive power of described label according to target range and described power adjustments precision, and the consistent step of the coverage of described label is specifically comprised:
Test the decipherment distance of described label;
Described label being placed on described target range place respectively, according to described decipherment distance, with described power adjustments precision for regulating step-length, regulating the emissive power of described label respectively;
Check the critical distance that described label can be identified, and record the transmission power level of described label in described critical distance.
3. the method for claim 1, is characterized in that, describedly controls the emissive power of described label according to target range and described power adjustments precision, also comprises step after making the consistent step of the coverage of described label:
Receive the recognition instruction of the described label that background devices sends, identify described label and perform associative operation.
4. method as claimed in claim 3, is characterized in that, the recognition instruction of the described label that described reception background devices sends, and identifies described label and the step performing the associative operation of business need specifically comprises:
The recognition instruction that the described label that reception background devices sends according to preset interval duration is corresponding;
According to described recognition instruction, identify corresponding described label and obtain the transmission power level of described label in described critical distance, according to described transmission power level transmitted power;
After time delay preset time, send the signal of eating dishes without rice or wine of described label to background devices; And complete the associative operation of described label in background devices after, stop transmitted power.
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| CN110633591A (en) * | 2019-09-18 | 2019-12-31 | 深圳盈达机器视觉技术有限公司 | Radio frequency identification reader and method of use |
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| CN105491650A (en) * | 2015-12-29 | 2016-04-13 | 深圳市海云天科技股份有限公司 | Method and system of power adaptive adjustment of radio frequency reader |
| CN105491650B (en) * | 2015-12-29 | 2019-11-19 | 深圳市海云天科技股份有限公司 | The power adaptive method of adjustment and system of frequency read/write |
| CN111066261A (en) * | 2017-07-27 | 2020-04-24 | 普拉多斯公司 | Method for generating a network for providing, in particular, the internet over the entire surface of the earth, payload and aircraft implementing said method |
| CN108052854A (en) * | 2017-12-29 | 2018-05-18 | 深圳正品创想科技有限公司 | A kind of method, apparatus and its electronic equipment for automatically adjusting RFID read head power |
| CN110633591A (en) * | 2019-09-18 | 2019-12-31 | 深圳盈达机器视觉技术有限公司 | Radio frequency identification reader and method of use |
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