CN102254136B - Method and module for correcting index discretization of low-frequency sensing device, and low-frequency sensing device - Google Patents
Method and module for correcting index discretization of low-frequency sensing device, and low-frequency sensing device Download PDFInfo
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Abstract
The invention relates to a method and a module for correcting index discretization of a low-frequency sensing device, and the low-frequency sensing device, wherein the method for correcting the index discretization of the low-frequency sensing device comprises the following steps of: setting relative positions of and a distance d between the low-frequency sensing device and a low-frequency emission source for emitting low-frequency magnetic signals; presetting an initial threshold value GATE, and presetting a measurement standard value S of the low-frequency sensing device to the low-frequency magnetic signal according to the distance d; and adjusting the value of the GATE according to the difference between the actual measurement value X of the low-frequency sensing device for the low-frequency magnetic signal and the measurement standard value S, thus determining a present actual threshold value. The method is capable of keeping excellent transaction consistency of all the low-frequency sensing devices, namely keeping the card swiping control distance consistent, thereby enhancing the user experience; moreover, the low-frequency sensing device which does not reach the standard due to non-ideal transaction effect also can reach the standard of normal transaction after being corrected by the method; therefore, the yield of products can be improved.
Description
Technical field
The present invention relates to the communications field, relate in particular to the discrete modification method of a kind of low frequency induction device index and module, low frequency induction device.
Background technology
Along with the development of mobile payment technology, people can take pubic transport by the brush mobile phone, subway, arrive supermarket shopping etc. in recent years, and these lives that are applied as people bring great convenience.Current domestic mobile payment is divided into two large classes technically, and a class is the NFC scheme of 13.56MHz; Another kind of is the 2.4GHz scheme.2.4GHz just can realize mobile payment as long as plug the RFID-SIM/SD card with mobile payment function in mobile phone in scheme.
2.4GHz the distance of swiping the card (the transaction distance in other words) control principle of scheme is (to be RFID-SIM card or RFID-SD card by the RFID-SIM/SD card, the magnitude of voltage that down together) the inner low frequency induction devices such as low-frequency coil are sensed carrys out judging distance, and the Chinese patent application that application number is 200920179981.5 discloses related art scheme.RFID-SIM/SD is stuck in apart from a distance, low frequencies source, and the low-frequency magnetic signal of induction is converted into to electric signal, and by the electric signal obtained, the threshold value default with it compares card, judges whether card enters the distance of swiping the card.
But because various RFID-SIM/SD card card hardware itself there are differences, the low-frequency magnetic signal that makes them sense in same distance there are differences, cause the electric signal that finally obtains inconsistent, if the threshold value of all RFID-SIM/SD cards is certain, can cause the distance of swiping the card of various RFID-SIM/SD cards inconsistent, will make like this experience effect of user card punching different.
Summary of the invention
Technical matters to be solved by this invention is to provide the discrete modification method of low frequency induction device index and module, low frequency induction device, and the distance of swiping the card of various RFID-SIM/SD cards that can make to have mobile payment function is consistent.
For solving the problems of the technologies described above, the present invention proposes the discrete modification method of a kind of low frequency induction device index, comprising:
Set the low frequency induction device with the relative position in the low frequencies source that is used for launching the low-frequency magnetic signal and apart from d, described apart from d the linear magnification region in described low-frequency magnetic signal;
Default initial threshold value GATE, and preset the measurement standard value S of low frequency induction device to described low-frequency magnetic signal according to described apart from d, measurement standard value S is the eigenwert changed with distance;
According to described low frequency induction device to the actual measured value X of described low-frequency magnetic signal and the discrepancy adjustment GATE value between described measurement standard value S, to determine current actual door limit value.
Further, said method also can have following characteristics, and described initial threshold value GATE is according to swiping the card the command range setting, bandwidth value or peak value that described initial threshold value GATE, measurement standard value S, actual measured value X are the low-frequency magnetic signal.
Further, said method also can have following characteristics, and described according to the low frequency induction device, actual measured value X and the discrepancy adjustment GATE value between described measurement standard value S to described low-frequency magnetic signal is specially to determine current actual door limit value:
If described actual measured value X is greater than described measurement standard value S, and both differences are greater than the limits of error value of described measurement standard value S, increase the GATE value;
If described actual measured value X is less than described measurement standard value S, and both differences are greater than the limits of error value of described measurement standard value S, reduce the GATE value;
If the difference of described actual measured value X and described measurement standard value S is less than or equal to the limits of error value of described measurement standard value S, selected current GATE value is the actual door limit value.
Further, said method also can have following characteristics, the function of the difference that the adjustment amount of described GATE value is described actual measured value X and described measurement standard value S.
For solving the problems of the technologies described above, the present invention proposes the discrete correcting module of a kind of low frequency induction device index, comprising:
The first setting unit, for the relative position of setting low frequency induction device and low frequencies source and apart from d, wherein, described low frequencies source is used for launching the low-frequency magnetic signal, described apart from d the linear magnification region in described low-frequency magnetic signal;
The second setting unit, for default initial threshold value GATE, and preset the measurement standard value S of low frequency induction device to described low-frequency magnetic signal according to described apart from d, and measurement standard value S is the eigenwert changed with distance;
Adjustment unit, for according to the low frequency induction device to the actual measured value X of described low-frequency magnetic signal and the discrepancy adjustment GATE value between described measurement standard value S, to determine current actual door limit value.
Further, above-mentioned module also can have following characteristics, and described adjustment unit comprises the first adjustment subelement, the second adjustment subelement and selected unit:
When described the first adjustment subelement is greater than the limits of error value of described measurement standard value S for be greater than described measurement standard value S and both differences at described actual measured value X, increase the GATE value;
Described second adjusts subelement at described actual measured value X, being less than described measurement standard value S, and both differences reduce the GATE value while being greater than the limits of error value of described measurement standard value S;
Described selected unit is for when the difference of described actual measured value X and described measurement standard value S is less than or equal to the limits of error value of described measurement standard value S, and selected current GATE value is the actual door limit value.
Further, above-mentioned module also can have following characteristics, the function of the difference that the adjustment amount of described GATE value is described actual measured value X and described measurement standard value S.
For solving the problems of the technologies described above, the present invention proposes a kind of low frequency induction device, there is the discrete correcting module of the described low frequency induction device of above-mentioned any one index.
Further, said apparatus also can have following characteristics, and described low frequency induction device is RFID-SIM card or RFID-SD card.
The modification method that low frequency induction device index provided by the present invention is discrete and module, low frequency induction device, can make all low frequency induction devices have good trade identity, and the command range of swiping the card is consistent, thereby can promote the user, experiences.Because trading effect is undesirable, cause simultaneously can not be up to standard the low frequency induction device also can, by reaching the standard of arm's length transaction after correction of the present invention, therefore can improve the yield rate of product.
The accompanying drawing explanation
Fig. 1 is the discrete modification method schematic diagram of embodiment of the present invention medium and low frequency induction installation index;
Fig. 2 is the discrete modification method process flow diagram of embodiment of the present invention medium and low frequency induction installation index;
Fig. 3 is the discrete correcting module structural drawing of embodiment of the present invention medium and low frequency induction installation index;
A kind of structural drawing that Fig. 4 is adjusting module 33 in Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Herein, the low frequency induction device can be the various RFID-SIM/SD cards that adopt the 2.4GHz scheme to carry out mobile payment, can be also the miscellaneous equipment that adopts the 2.4GHz scheme to carry out mobile payment.
Fig. 1 is the discrete modification method schematic diagram of embodiment of the present invention medium and low frequency induction installation index.As shown in Figure 1, in the present embodiment, utilize low frequencies source 102 emission low-frequency magnetic signals, the relative position in fixing low frequency induction device 101 and low frequencies source 102 and apart from the time, difference between the actual measured value obtained by comparison low frequency induction device 101 measurement low-frequency magnetic signals and default measurement standard value, judge that whether default threshold value is corresponding with the command range of swiping the card (command range of concluding the business in other words) of expection, and according to this difference, default initial threshold value is adjusted, so that the threshold value after adjusting is corresponding with the command range of swiping the card of expection.What deserves to be explained is, low frequencies source 102 and low frequency induction device 101 need to be placed in the environment without magnetic interference, and this environment can be the environment of shielding box encirclement.
Fig. 2 is the discrete modification method process flow diagram of embodiment of the present invention medium and low frequency induction installation index.As shown in Figure 2, in the present embodiment, the discrete modification method of low frequency induction device index comprises the steps:
Relative position is set and is in order to guarantee that the low frequency induction device can sense low frequency magnetic field apart from d, and the linear magnification region in low frequency magnetic field, can the distortionless induction information that obtains.That is to say linear magnification region that need to be in the low-frequency magnetic signal apart from d.
Wherein, default measurement standard value S can be bandwidth value, peak value or other eigenwert changed with distance of induced signal (being the low-frequency magnetic signal, lower same).Default measurement standard value S be in step 201 relative position and apart from d, determine after the standard value that obtains.Measurement standard value S measures a measured value that the low frequency induction device obtains, and can be also the mean value of a plurality of measured values of obtaining after a plurality of low frequency induction measurement devices.
Wherein, default initial threshold value GATE controls the numerical value that the low frequency induction device is opened the trading channel of swiping the card, and low frequency induction device influence value reaches after the GATE value transaction of can being swiped the card.Initial threshold value GATE is according to swiping the card the command range setting.Default initial threshold GATE value can be bandwidth value, peak value or other eigenwert changed with distance of induced signal.
Here, X is the actual measured value obtained by low frequency induction measurement device low-frequency magnetic signal.Value of electrical signals X is that the relative position and the distance that in step 201, arrange obtain.The numerical value that in value of electrical signals X and step 202, measurement standard value S is same type.Value of electrical signals X can be bandwidth value, peak value or other eigenwert changed with distance of induced signal.
X is relevant with the disparity range that allows the transaction of low frequency induction device with the setting of the disparity range of S, and set X and the disparity range of S must meet all low frequency induction device transaction distance difference within requirement of system design.
Now, can select current GATE value for the actual door limit value.
Step 206, adjust GATE.
The adjustment amount of GATE value can be the function of the difference of X and S.
Particularly, can adopt following manner according to the discrepancy adjustment threshold value GATE between X and S:
If X is greater than S, and both differences are greater than the limits of error value of S, increase the GATE value;
If X is less than S, and both differences are greater than the limits of error value of S, reduce the GATE value;
If the difference of X and S is less than or equal to the limits of error value of S, can select current GATE value for the actual door limit value.
Particularly, adopt an instantiation to be described further said method.
For example, the distance of swiping the card of requirement is for 10cm, and its corresponding GATE value is set to 1.35V.The S value is the average inductive voltage value at the 7cm place, is assumed to be 1.45V.X is the actual sensed magnitude of voltage of low frequency induction device at the 7cm place, is assumed to be 1.4V, and the difference of X and S is 0.05V so, if specification error is 0.03V, 0.05V > 0.03V, the GATE value of this card should be adjusted into 1.35-0.05V=1.3V so.Be the induction of this low frequency induction device voltage slightly a little less than, in order to guarantee consistance, so by GATE threshold value slight reduction a bit.
Use the discrete modification method of low frequency induction device index of the present invention, can make all low frequency induction devices have good trade identity, the command range of swiping the card is consistent, thereby promote the user, experiences.Because trading effect is undesirable, cause simultaneously can not be up to standard the low frequency induction device also can, by reaching the standard of arm's length transaction after the inventive method correction, therefore can improve the yield rate of product.
The invention allows for the discrete correcting module of a kind of low frequency induction device index.
Fig. 3 is the discrete correcting module structural drawing of embodiment of the present invention medium and low frequency induction installation index.As shown in Figure 3, in the present embodiment, the discrete correcting module 30 of low frequency induction device index comprises the first setting unit 31, the second setting unit 32 and adjustment unit 33.
Wherein, the first setting unit 31 is for the relative position of setting low frequency induction device and low frequencies source and apart from d, low frequencies source emission low-frequency magnetic signal;
Relative position is set and is in order to guarantee that the low frequency induction device can sense low frequency magnetic field apart from d, and the linear magnification region in low frequency magnetic field, can the distortionless induction information that obtains.That is to say linear magnification region that need to be in the low-frequency magnetic signal apart from d.
Wherein, the second setting unit 32 is for default initial threshold value GATE, and according to the default low frequency induction device of distance d the measurement standard value S to the low-frequency magnetic signal;
Default measurement standard value S can be bandwidth value, peak value or other eigenwert changed with distance of induced signal.Default measurement standard value S is the standard value obtained after the first setting unit 31 is determined by relative position with apart from d.Measurement standard value S measures a measured value that the low frequency induction device obtains, and can be also the mean value of a plurality of measured values of obtaining after a plurality of low frequency induction measurement devices.
Default initial threshold value GATE controls the numerical value that the low frequency induction device is opened the trading channel of swiping the card, and low frequency induction device influence value reaches after the GATE value transaction of can being swiped the card.Initial threshold value GATE is according to swiping the card the command range setting.Default initial threshold GATE value can be bandwidth value, peak value or other eigenwert changed with distance of induced signal.
Wherein, adjustment unit 33 for according to the low frequency induction device to the actual measured value X of low-frequency magnetic signal and the discrepancy adjustment GATE value between measurement standard value S, to determine current actual door limit value.
Here, X is the actual measured value obtained by low frequency induction measurement device low-frequency magnetic signal.X is that the relative position and the distance that in the first setting unit 31, arrange obtain.The numerical value that X and measurement standard value S are same type.X can be bandwidth value, peak value or other eigenwert changed with distance of induced signal.
A kind of structural drawing that Fig. 4 is adjusting module 33 in Fig. 3.As shown in Figure 4, may further include the first adjustment subelement 331, second in adjustment unit 33 and adjust subelement 332 and selected unit 333, wherein:
When the first adjustment subelement 331 is greater than the limits of error value of measurement standard value S for be greater than measurement standard value S and both differences at actual measured value X, increase the GATE value;
Second adjusts subelement 332 for be less than measurement standard value S at actual measured value X, and both differences reduce the GATE value while being greater than the limits of error value of measurement standard value S;
When selected unit 333 is less than or equal to the limits of error value of measurement standard value S for the difference at actual measured value X and measurement standard value S, selected current GATE value is the actual door limit value.
Wherein, the adjustment amount of GATE value can be the function of the difference of actual measured value X and described measurement standard value S.
The discrete correcting module of low frequency induction device index of the present invention, can make all low frequency induction devices have good trade identity, and the command range of swiping the card is consistent, thereby promote the user, experiences.Because trading effect is undesirable, cause simultaneously can not be up to standard the low frequency induction device also can, by reaching the standard of arm's length transaction after correction of the present invention, therefore can improve the yield rate of product.
The invention allows for a kind of low frequency induction device, this low frequency induction device has the above-mentioned discrete correcting module of low frequency induction device index.This low frequency induction device can be RFID-SIM card or RFID-SD card.
Owing to having the discrete correcting module of low frequency induction device index, therefore have good trade identity in low frequency induction device of the present invention, the command range of swiping the card is consistent, has promoted user's experience.Because trading effect is undesirable, cause low frequency induction device can not be up to standard the time also can, by reaching the standard of arm's length transaction after correcting module correction of the present invention, therefore there is higher yield rate simultaneously.
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 (9)
1. the discrete modification method of low frequency induction device index, is characterized in that, comprising:
Set the low frequency induction device with the relative position in the low frequencies source that is used for launching the low-frequency magnetic signal and apart from d, described apart from d the linear magnification region in described low-frequency magnetic signal;
Default initial threshold value GATE, and preset the measurement standard value S of low frequency induction device to described low-frequency magnetic signal according to described apart from d, measurement standard value S is the eigenwert changed with distance;
According to described low frequency induction device to the actual measured value X of described low-frequency magnetic signal and the discrepancy adjustment GATE value between described measurement standard value S, to determine current actual door limit value.
2. the discrete modification method of low frequency induction device index according to claim 1 is characterized in that:
Described initial threshold value GATE is according to swiping the card the command range setting, bandwidth value or peak value that described initial threshold value GATE, measurement standard value S, actual measured value X are the low-frequency magnetic signal.
3. the discrete modification method of low frequency induction device index according to claim 1 is characterized in that:
It is described that according to the low frequency induction device, actual measured value X and the discrepancy adjustment GATE value between described measurement standard value S to described low-frequency magnetic signal is specially to determine current actual door limit value:
If described actual measured value X is greater than described measurement standard value S, and both differences are greater than the limits of error value of described measurement standard value S, increase the GATE value;
If described actual measured value X is less than described measurement standard value S, and both differences are greater than the limits of error value of described measurement standard value S, reduce the GATE value;
If the difference of described actual measured value X and described measurement standard value S is less than or equal to the limits of error value of described measurement standard value S, selected current GATE value is the actual door limit value.
4. the discrete modification method of low frequency induction device index according to claim 3 is characterized in that:
The function of the difference that the adjustment amount of described GATE value is described actual measured value X and described measurement standard value S.
5. the discrete correcting module of low frequency induction device index, is characterized in that, comprising:
The first setting unit, for the relative position of setting low frequency induction device and low frequencies source and apart from d, wherein, described low frequencies source is used for launching the low-frequency magnetic signal, described apart from d the linear magnification region in described low-frequency magnetic signal;
The second setting unit, for default initial threshold value GATE, and preset the measurement standard value S of low frequency induction device to described low-frequency magnetic signal according to described apart from d, and measurement standard value S is the eigenwert changed with distance;
Adjustment unit, for according to the low frequency induction device to the actual measured value X of described low-frequency magnetic signal and the discrepancy adjustment GATE value between described measurement standard value S, to determine current actual door limit value.
6. the discrete correcting module of low frequency induction device index according to claim 5 is characterized in that:
Described adjustment unit comprises the first adjustment subelement, the second adjustment subelement and selected unit:
When described the first adjustment subelement is greater than the limits of error value of described measurement standard value S for be greater than described measurement standard value S and both differences at described actual measured value X, increase the GATE value;
Described second adjusts subelement at described actual measured value X, being less than described measurement standard value S, and both differences reduce the GATE value while being greater than the limits of error value of described measurement standard value S;
Described selected unit is for when the difference of described actual measured value X and described measurement standard value S is less than or equal to the limits of error value of described measurement standard value S, and selected current GATE value is the actual door limit value.
7. the discrete correcting module of low frequency induction device index according to claim 6 is characterized in that:
The function of the difference that the adjustment amount of described GATE value is described actual measured value X and described measurement standard value S.
8. a low frequency induction device, is characterized in that, has the discrete correcting module of the described low frequency induction device of claim 5 to 7 any one index.
9. low frequency induction device according to claim 8, is characterized in that, described low frequency induction device is RFID-SIM card or RFID-SD card.
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| CN 201110167298 CN102254136B (en) | 2011-06-21 | 2011-06-21 | Method and module for correcting index discretization of low-frequency sensing device, and low-frequency sensing device |
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| CN101334470A (en) * | 2008-07-29 | 2008-12-31 | 深圳市中兴集成电路设计有限责任公司 | System and method for controlling mobile terminal radio frequency communication distance |
| CN101692127A (en) * | 2009-09-30 | 2010-04-07 | 西安电子科技大学 | Radio frequency SIM card range measurement system and measurement method based on near-field array range estimation |
| CN101751719A (en) * | 2008-12-03 | 2010-06-23 | 国民技术股份有限公司 | Method for improving accuracy of trading system communication distance with temperature compensation |
| CN102024290A (en) * | 2009-09-23 | 2011-04-20 | 国民技术股份有限公司 | Method and system for controlling radio frequency communication distance |
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| KR20070056816A (en) * | 2005-11-30 | 2007-06-04 | 주식회사 유컴테크놀러지 | Rfid system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101334470A (en) * | 2008-07-29 | 2008-12-31 | 深圳市中兴集成电路设计有限责任公司 | System and method for controlling mobile terminal radio frequency communication distance |
| CN101751719A (en) * | 2008-12-03 | 2010-06-23 | 国民技术股份有限公司 | Method for improving accuracy of trading system communication distance with temperature compensation |
| CN102024290A (en) * | 2009-09-23 | 2011-04-20 | 国民技术股份有限公司 | Method and system for controlling radio frequency communication distance |
| CN101692127A (en) * | 2009-09-30 | 2010-04-07 | 西安电子科技大学 | Radio frequency SIM card range measurement system and measurement method based on near-field array range estimation |
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