CN107730712B - Interference positioning method and device - Google Patents
Interference positioning method and device Download PDFInfo
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- CN107730712B CN107730712B CN201711090460.8A CN201711090460A CN107730712B CN 107730712 B CN107730712 B CN 107730712B CN 201711090460 A CN201711090460 A CN 201711090460A CN 107730712 B CN107730712 B CN 107730712B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
- G07D11/10—Mechanical details
- G07D11/16—Handling of valuable papers
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
- G07F19/20—Automatic teller machines [ATMs]
- G07F19/201—Accessories of ATMs
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Abstract
The embodiment of the invention discloses an interference positioning method, which comprises the following steps: determining the total count amount of an encoder when the magnetically floating shaft makes a complete rotation according to the relationship between the rotation angular velocity of the magnetically floating shaft and the rotation angular velocity of the encoder; determining a count parameter of at least one counter matched with the rotation period of the magnetic floating shaft according to the count total amount of the encoder; calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter; and establishing a corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result to obtain a positioning result of the interference phase. The embodiment of the invention can accurately position the phase position of the interference of the magnetic floating shaft on the paper currency magnetic detection, and improve the accuracy of the paper currency magnetic detection result.
Description
Technical Field
The embodiment of the invention relates to the technical field of self-service financial equipment, in particular to an interference positioning method and device.
Background
The self-service financial equipment is used for distinguishing the truth of paper money and has very important significance for maintaining normal economic order and currency stability. In the currency detecting part of the self-service financial equipment, paper currency passes through the magnetic sensor under the driving of the magnetic floating shaft, and the magnetic sensor obtains the magnetic detection result of the paper currency to be used as one of indexes for judging the authenticity of the paper currency.
However, due to the limitations of the process level and the cost, the magnetic floating shaft is magnetized by the magnetic sensor in the working process, which causes interference to the magnetic detection result of the paper money, and the magnetic sensor has a certain distance range to the magnetic signal detection of the paper money, which cannot structurally make the magnetic floating shaft far away from the magnetic sensor, resulting in inaccurate magnetic detection result of the magnetic sensor, and further affects the authenticity judgment of the paper money. Therefore, it is an urgent need to improve the accuracy of the magnetic detection result in the self-service financial device.
Disclosure of Invention
The embodiment of the invention provides an interference positioning method and device, and aims to solve the problem that magnetic detection results are inaccurate due to interference in the magnetic detection results in the prior art.
In a first aspect, an embodiment of the present invention provides an interference positioning method, including:
determining the total count amount of an encoder when the magnetically floating shaft makes a complete rotation according to the relationship between the rotation angular velocity of the magnetically floating shaft and the rotation angular velocity of the encoder;
determining a count parameter of at least one counter matching a rotation period of the magnetically floating shaft from a count total of the encoder, wherein the count parameter comprises: a count step size, and/or a count period;
calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter;
and adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing the corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result, and obtaining the positioning result of the interference phase.
Further, determining a total count amount of the encoder when the magnetically floating shaft makes one complete rotation, based on a relationship between a rotation angular velocity of the magnetically floating shaft and a rotation angular velocity of the encoder, includes:
calculating a ratio between a rotational angular velocity of the magnetically floating shaft and a rotational angular velocity of the encoder;
acquiring the total counting amount of the corresponding output signals of the encoder which rotates for one circle completely;
and determining the result of the product of the ratio and the total counting amount of the output signals corresponding to one complete rotation of the encoder as the total counting amount of the encoder corresponding to one complete rotation of the magnetic floating shaft.
Further, determining a count parameter of at least one counter matching a rotation period of the magnetically floating shaft based on a total count of the encoder, comprising:
determining the total count of the encoder as a count period of a standard counter that matches the rotation period of the magnetically floating shaft and determining a count step of the standard counter as 1 if it is determined that the total count of the encoder is an integer;
if the total count amount of the encoder is determined not to be an integer, an integer counter and a correction counter are constructed, and an integer count parameter of the integer counter and a correction count parameter of the correction counter that match the rotation period of the magnetically floating shaft are determined based on the total count amount of the encoder.
Further, determining an integer count parameter of the integer counter and a corrected count parameter of the corrected counter that match a rotation period of the magnetically floating shaft from a total count amount of the encoder includes:
acquiring an operation result of rounding up the total count of the encoder, determining the operation result as the integer counting period, and determining an integer counting step corresponding to the integer counting period as 1;
and acquiring a counting error of an integer counting period corresponding to the operation of rounding up, and determining a numerator of the counting error as a correction counting step.
Further, calculating a real-time phase positioning result of the magnetically floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter, comprising:
acquiring a correction counting result counted by the correction counter according to the correction counting step length by taking the numerator of the counting error as a counting starting point;
if the correction counting result is determined to be larger than or equal to the set threshold, re-determining the correction counting result to be the ratio of the updated correction counting result to the denominator of the counting error, wherein the updated correction result comprises the difference value between the correction counting result and the set threshold;
and determining the real-time counting result according to the integer counting result obtained by the integer counter and the correction counting result obtained by the correction counter.
Further, after determining the real-time counting result according to the integer counting result obtained by the integer counter and the corrected counting result obtained by the corrected counter, the method includes:
acquiring a real-time counting result corresponding to the total counting amount of the encoder when the total counting amount of the encoder is an integer, or acquiring a real-time counting result corresponding to the total counting amount of the encoder when the total counting amount of the encoder is not an integer;
according to a formula
Obtaining a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result, wherein w represents the real-time phase positioning result, and n represents the real-time phase positioning resultiRepresenting the real-time counting result, N representing the total counting amount of the encoder when the magnetic floating shaft rotates for one complete revolution, i is equal to [1, N]And i is a positive integer, and pi represents 180 degrees.
Further, adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, and establishing a corresponding relationship between the real-time phase positioning result and the paper currency magnetic detection result to obtain a positioning result of an interference phase, including:
taking the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result as a current processing result;
adding the current processing result into the row and/or column of the banknote magnetic detection result, and establishing a corresponding relation between the current processing result and the row and/or column of the banknote magnetic detection result;
returning to execute the operation of taking the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result as the current processing result until the corresponding relation is established between all counting results in the counting period and the paper currency magnetic detection result;
and obtaining a positioning result of the interference phase in the paper currency magnetic detection result according to the corresponding relation.
Further, adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing a corresponding relationship between the real-time phase positioning result and the paper currency magnetic detection result, and after obtaining the positioning result of the interference phase, the method further comprises the following steps:
determining the magnetization position of the magnetic floating shaft according to the positioning result of at least one interference phase corresponding to at least one counting period;
and correcting the magnetic detection result of the paper currency according to the magnetization position so as to remove the interference of the magnetization position of the magnetic floating shaft on the magnetic detection result of the paper currency.
In a second aspect, an embodiment of the present invention further provides an interference positioning apparatus, including:
the counting total acquisition module is used for determining the counting total of the encoder when the magnetic floating shaft rotates for one circle completely according to the relation between the rotation angular velocity of the magnetic floating shaft and the rotation angular velocity of the encoder;
a counting parameter determination module for determining a counting parameter of at least one counter matching a rotation period of the magnetically floating shaft based on a total count of the encoder, wherein the counting parameter comprises: a count step size, and/or a count period;
the real-time phase positioning result calculating module is used for calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter;
and the interference phase positioning result acquisition module is used for adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing the corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result and obtaining the positioning result of the interference phase.
Further, the counting parameter determination module comprises:
a first count parameter determination unit for determining the total count amount of the encoder as a count period of a standard counter that matches a rotation period of the magnetically floating shaft and determining a count step of the standard counter as 1 if it is determined that the total count amount of the encoder is an integer;
a second count parameter determination unit configured to construct an integer counter and a correction counter if it is determined that the total count amount of the encoder is not an integer, and determine an integer count parameter of the integer counter and a correction count parameter of the correction counter that match a rotation period of the magnetic floating shaft, based on the total count amount of the encoder.
According to the embodiment of the invention, the interference phase corresponding to the magnetization position of the magnetic floating shaft is positioned by acquiring the real-time counting result of the pulse signal output by the encoder corresponding to the magnetic floating shaft in the rotation period and according to the calculation relationship between the real-time counting result of the encoder and the phase of the magnetic floating shaft. According to the embodiment of the invention, the phase position of interference of the magnetic floating shaft on the paper currency magnetic detection can be accurately positioned according to the rotation corresponding relation between the encoder and the magnetic floating shaft, so that the paper currency authenticity identification can be conveniently carried out according to the paper currency magnetic detection result subsequently, the accuracy of the paper currency magnetic detection result is improved, the accuracy of the paper currency authenticity identification is further improved, and meanwhile, the reliability of the self-service financial equipment is improved.
Drawings
Fig. 1 is a flowchart of an interference positioning method according to a first embodiment of the present invention;
fig. 2 is a flowchart of an interference positioning method according to a second embodiment of the present invention;
fig. 3 is a flowchart of an interference positioning method according to a third embodiment of the present invention;
fig. 4 is a flowchart of an interference positioning method according to a fourth embodiment of the present invention;
fig. 5 is a flowchart of an interference positioning method in the fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an interference positioning apparatus in a sixth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example one
Fig. 1 is a flowchart of an interference positioning method according to an embodiment of the present invention, where the method is applicable to positioning an interference phase of a magnetic floating shaft by obtaining a count result of a pulse signal output by an encoder corresponding to the magnetic floating shaft in a rotation period, and the method may be executed by an interference positioning apparatus, which may be implemented in a software and/or hardware manner and is generally integrated in a Field Programmable Gate Array (FPGA). As shown in fig. 1, the method according to the first embodiment of the present invention specifically includes:
and S110, determining the total counting amount of the encoder when the magnetic floating shaft rotates for one complete circle according to the relation between the rotation angular speed of the magnetic floating shaft and the rotation angular speed of the encoder.
Specifically, in the currency examine part of self-service financial equipment, magnetism floating shaft presses close to magnetic sensor and sets up, and magnetism floating shaft passes through the transmission band with the driving shaft to be connected, and the driving shaft can be connected with the driven shaft, and the gear of driven shaft and the crisscross interlock of code wheel of encoder. When the currency detecting component works, the magnetic floating shaft and the encoder perform rotary motion at respective angular speeds. The method includes obtaining a rotation correspondence between the rotation motion of the magnetic floating shaft and the rotation motion of the encoder, where the rotation correspondence may be, for example, a correspondence between a rotation angular velocity of the magnetic floating shaft and a rotation angular velocity of the encoder, and it should be noted that, as will be known to those skilled in the art, the rotation correspondence may also be a correspondence between a rotation speed of the magnetic floating shaft and a rotation speed of the encoder, which is not limited in the present invention.
In another alternative embodiment of this embodiment, a ratio between the rotational angular velocity of the magnetically floating shaft and the rotational angular velocity of the encoder and a total count amount of the pulse signals output when the encoder makes one rotation are obtained, and a total count amount of the signals of the encoder corresponding to one complete rotation of the magnetically floating shaft is determined based on a result of multiplication of the ratio and the total count amount of the pulse signals output when the encoder makes one rotation.
S120, determining the counting parameters of at least one counter matched with the rotation period of the magnetic floating shaft according to the counting total amount of the encoder, wherein the counting parameters comprise: a count step size, and/or a count period.
Specifically, whether the total signal count amount of the encoder corresponding to one complete rotation circle of the magnetic floating shaft is an integer is judged, when the total signal count amount of the encoder is an integer, the total signal count amount of the encoder is determined as the count period, namely when the count result of the counter is equal to the total signal count amount of the encoder, the counter is reset and starts counting again. The number of signals output by the encoder may be counted using a standard counter, the counting step of which may be 1, and the counting is performed by incrementing the counting step.
When the total signal count amount of the encoder is not an integer, the real-time count result may be obtained by constructing an integer counter and correcting the counter. When the integer counter is used for counting, the counting period and the counting step length need to be determined, and the operation result of rounding up the total counting amount can be used as the counting period of the integer counter, that is, when the counting result of the integer counter is equal to the operation result of rounding up the total counting amount, the integer counter is cleared and starts counting again. The integer counter may have a count step of 1, and count up by the count step. Since the operation of rounding up is performed, the counting result has an error, and therefore the error can be corrected by the correction counter, and the counting step of the correction counter can be determined as the numerator of the error, that is, the numerator of the error can be counted up as the base.
S130, calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter.
Specifically, if the total signal count amount of the encoder is an integer, the standard counter counts according to the corresponding count period and count step length, and outputs the real-time count result of the standard counter. If the total signal counting amount of the encoder is not an integer, acquiring an integer counting result obtained by counting the integer counter according to the corresponding counting period and counting step length, counting the correction counting result by the correction counter according to the corresponding counting step length and finally determining according to a set threshold value, and summing the integer counting result and the correction counting result into a real-time counting result.
And calculating the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result, namely determining the corresponding relation between the counting result of the encoder and the phase of the magnetic floating shaft. In another alternative embodiment of this embodiment, the real-time phase positioning result of the magnetic floating shaft can be obtained by multiplying the ratio of the real-time counting result to the total number counted in the rotation period of the magnetic floating shaft by 360 degrees.
S140, adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing a corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result, and obtaining a positioning result of an interference phase.
Specifically, since the position where the magnetization of the magnetic floating shaft occurs is fixed, the magnetic detection result of the paper money is fixedly disturbed. To acquire the magnetization position of the magnetically floating shaft, the disturbing phase of the magnetically floating shaft needs to be positioned. And adding the acquired real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, and establishing a corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result. Illustratively, in the process of carrying out magnetic detection and identification on paper money by a magnetic sensor, magnetic data of the paper money is scanned in lines to obtain line data of the magnetic detection of the paper money, a corresponding relation is established between the line data of the magnetic detection of the paper money and a real-time phase positioning result, and when the magnetic detection result of the paper money has interference, a positioning result of the interference phase of the magnetic floating shaft can be obtained. After the positioning result of the interference phase of the magnetic floating shaft is obtained, namely after the magnetization position of the magnetic floating shaft is obtained, the correction algorithm is used for correcting the paper currency magnetic detection result corresponding to the interference phase of the magnetic floating shaft so as to eliminate the adverse effect of the magnetization position of the magnetic floating shaft on the accuracy of the paper currency magnetic detection result.
According to the interference positioning method provided by the embodiment of the invention, the phase position of interference caused by the magnetic floating shaft to the paper currency magnetic detection can be accurately positioned according to the rotation corresponding relation between the encoder and the magnetic floating shaft, so that the paper currency authenticity identification can be conveniently carried out according to the paper currency magnetic detection result subsequently, the accuracy of the paper currency magnetic detection result is improved, the accuracy of the paper currency authenticity identification is further improved, and meanwhile, the reliability of self-service financial equipment is improved.
Example two
Fig. 2 is a flowchart of a positioning disturbance method according to a second embodiment of the present invention, which is optimized based on the first embodiment, specifically, the second embodiment of the present invention further optimizes the operation of determining the total count of the encoder when the magnetic floating shaft makes a complete rotation according to the relationship between the rotational angular velocity of the magnetic floating shaft and the rotational angular velocity of the encoder, as shown in fig. 2, the method according to the second embodiment of the present invention specifically includes:
s210, calculating a ratio of the rotation angular speed of the magnetic floating shaft to the rotation angular speed of the encoder.
And S220, acquiring the total counting amount of the output signals corresponding to one complete rotation of the encoder.
And S230, determining the result of the product of the ratio and the total counting amount of the output signals corresponding to one complete rotation of the encoder as the total counting amount of the encoder corresponding to one complete rotation of the magnetic floating shaft.
Specifically, the magnetic floating shaft and the encoder perform rotational motion at respective angular velocities, that is, radians of rotation of the magnetic floating shaft or the encoder per second, and a ratio K between a rotational angular velocity of the magnetic floating shaft and a rotational angular velocity of the encoder is calculated. The number H of the pulse signals output when the encoder rotates for one circle is obtained, and the number of the pulse signals output by the encoder corresponding to one circle of rotation of the magnetic floating shaft is KH through calculation, namely, the total counting amount is KH. Judging whether KH is an integer, and determining the counting parameter of the corresponding counter according to the judgment result.
S240, determining the counting parameters of at least one counter matched with the rotation period of the magnetic floating shaft according to the counting total amount of the encoder, wherein the counting parameters comprise: a count step size, and/or a count period.
And S250, calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter.
S260, adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing a corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result, and obtaining a positioning result of an interference phase.
The interference positioning method provided by the embodiment of the invention can position the interference phase of the magnetic floating shaft by utilizing the corresponding rotation relation between the magnetic floating shaft and the encoder, greatly facilitates the subsequent identification and detection of the magnetism of the paper currency, and improves the accuracy of the paper currency magnetism detection result.
EXAMPLE III
Fig. 3 is a flowchart of a disturbance positioning method according to a third embodiment of the present invention, which is improved based on the above embodiments, and further illustrates determining a count parameter of at least one counter matched with a rotation period of the magnetically floating shaft according to a total count of the encoder, as shown in fig. 3, where the method according to the third embodiment of the present invention specifically includes:
and S310, determining the total counting amount of the encoder when the magnetic floating shaft rotates for one complete circle according to the relation between the rotation angular speed of the magnetic floating shaft and the rotation angular speed of the encoder.
And S320, judging whether the total counting amount of the encoder is an integer, if so, executing S330, and otherwise, executing S340.
S330, determining the total counting amount of the encoder as the counting period of a standard counter matched with the rotation period of the magnetic floating shaft, determining the counting step of the standard counter as 1, and executing S350.
Specifically, a corresponding relationship exists between the rotation period of the magnetic floating shaft and the counting result of the encoder, if the counting total amount of the encoder is an integer, the counting period and the counting step length of the corresponding standard counter are determined, the counting period can be determined as the counting total amount of the encoder, namely, in the rotation process of the magnetic floating shaft, the number of the pulse signals output by the encoder is counted by using the standard counter, and when the counting result reaches the counting total amount, the counting result is cleared and counting is restarted. The counting step of the standard counter may be 1, that is, every time the encoder outputs a pulse signal, the counting result of the standard counter is increased by 1 correspondingly.
S340, constructing an integer counter and a correction counter, and determining an integer count parameter of the integer counter and a correction count parameter of the correction counter matching with a rotation period of the magnetically floating shaft according to a total count amount of the encoder, and performing S350.
Preferably, determining an integer count parameter of the integer counter and a correction count parameter of the correction counter that match a rotation period of the magnetically floating shaft based on a total count amount of the encoder includes:
acquiring an operation result of rounding up the total count of the encoder, determining the operation result as the integer counting period, and determining an integer counting step corresponding to the integer counting period as 1;
and acquiring a counting error of an integer counting period corresponding to the operation of rounding up, and determining a numerator of the counting error as a correction counting step.
Specifically, generally, the probability that the total count number of the encoder is exactly an integer is small, and if the total count number of the encoder is not an integer, the total count number KH of the encoder can be converted into an integer and a fractional form, that is, the total count number KH of the encoder can be converted into an integer and a fractional form
In the form of (1). Since the number of the pulse signals output by the encoder in real time can only be an integer, an integer counter and a correction counter need to be constructed. Determining the counting period and the counting step length of the integer counter, performing an operation of rounding up on the total counting amount of the encoder, determining the counting period as the result of the operation of rounding up, namely taking M +1 as the counting period, and clearing the counting result and restarting counting when the counting result reaches M + 1. The counting step of the integer counter may be 1, that is, every time the encoder outputs a pulse signal, the counting result of the integer counter is increased by 1 correspondingly.
However, since the operation of rounding up is performed, there is an error in the count result of the integer counter, that is, the count result obtained by counting the number of pulse signals output from the encoder using the integer counter during rotation of the magnetically floating shaft is not accurate, and the correction of the counter is required. The integer counter corresponding to one rotation of the magnetic floating shaft counts more
The number of pulse signals of the encoder is increased by the integer counter
Number of steps, i.e. error, of
For ease of explanation, the error is reduced to
Performing an expansion operation on the error, multiplying the error by the denominator N2To obtain molecule N1. Determining the count step size of the correction counter to be N1And the starting point of the count of the correction counter is N1I.e. correcting the counter by N1The base is counted up.
And S350, calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter.
S360, adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing the corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result, and obtaining the positioning result of the interference phase.
The interference positioning method provided by the third embodiment of the invention can acquire the accurate counting result of the encoder corresponding to the rotation period of the magnetic floating shaft, and calculate the positioning result of the interference phase of the magnetic floating shaft according to the acquired counting result, so that the accuracy is high, and the accuracy of the banknote authenticity identification is further improved.
Example four
Fig. 4 is a flowchart of an interference positioning method according to a fourth embodiment of the present invention, which is optimized and improved based on the foregoing embodiments, and further illustrates that, according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter, the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result is calculated, as shown in fig. 4, the method according to the fourth embodiment of the present invention specifically includes:
and S410, determining the total counting amount of the encoder when the magnetic floating shaft rotates for one complete circle according to the relation between the rotation angular speed of the magnetic floating shaft and the rotation angular speed of the encoder.
S420, determining a counting parameter of at least one counter matched with the rotation period of the magnetic floating shaft according to the counting total amount of the encoder, wherein the counting parameter comprises: a count step size, and/or a count period.
And S430, acquiring a correction counting result of the correction counter counting according to the correction counting step by taking the numerator of the counting error as a counting starting point.
And S440, judging whether the correction counting result is larger than or equal to the set threshold, if so, executing S450, otherwise, continuing to execute S440.
S450, re-determining the correction counting result as the ratio of the update correction counting result to the denominator of the counting error, wherein the update correction result comprises the difference value between the correction counting result and the set threshold value.
And S460, determining the real-time counting result according to the integer counting result obtained by the integer counter and the correction counting result obtained by the correction counter.
Specifically, the counter is corrected by N1The set threshold may be set to N for base up counting2(M +1), when the counting result is greater than or equal to the set threshold value,that is, when the number of steps that the integer counter has to go more is exactly one turn, the counting result of the correction counter can be updated to be the difference between the correction counting result and the set threshold, and then the updated correction counting result is compared with N2As a result of the correction count of the newly determined correction counter, that is, the error retracting operation corresponding to the error enlarging operation is performed. When the total counting amount of the encoder is not an integer, the real-time counting result of the pulse signal output by the encoder corresponding to one rotation of the magnetic floating shaft is the sum of the counting result of the integer counter and the counting result of the correction counter.
S470, acquiring a real-time counting result corresponding to the total counting amount of the encoder being an integer, or a real-time counting result corresponding to the total counting amount of the encoder not being an integer;
s480, according to the calculation formula
Obtaining a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result, wherein w represents the real-time phase positioning result, and n represents the real-time phase positioning resultiRepresenting the real-time counting result, N representing the total counting amount of the encoder when the magnetic floating shaft rotates for one complete revolution, i is equal to [1, N]And i is a positive integer, and pi represents 180 degrees.
Specifically, if the total counting amount of the encoder is an integer, the real-time counting result corresponding to the standard counter is obtained, and if the total counting amount of the encoder is a non-integer, the total counting result of the integer counter and the correction counter is obtained as the real-time counting result. Substituting the real-time counting result into niAccording to the formula
And calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result.
S490, adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, and establishing a corresponding relationship between the real-time phase positioning result and the paper currency magnetic detection result to obtain a positioning result of an interference phase.
According to the interference positioning method provided by the fourth embodiment of the invention, the interference phase of the magnetic floating shaft is accurately positioned according to the real-time counting result of the encoder corresponding to the rotation period of the magnetic floating shaft, so that the authenticity of the paper money can be conveniently identified according to the magnetic detection result of the paper money, and the reliability of the self-service financial equipment is improved.
EXAMPLE five
Fig. 5 is a flowchart of an interference positioning method according to a fifth embodiment of the present invention, which is optimized and improved based on the above embodiments, and further illustrates that a positioning result of an interference phase is obtained by adding a real-time phase positioning result of the magnetic floating shaft to a magnetic detection result of a banknote, establishing a corresponding relationship between the real-time phase positioning result and the magnetic detection result of the banknote, as shown in fig. 5, the method according to the fifth embodiment of the present invention specifically includes:
and S510, determining the total counting amount of the encoder when the magnetic floating shaft rotates for one circle completely according to the relation between the rotation angular speed of the magnetic floating shaft and the rotation angular speed of the encoder.
S520, determining the counting parameters of at least one counter matched with the rotation period of the magnetic floating shaft according to the counting total amount of the encoder, wherein the counting parameters comprise: a count step size, and/or a count period.
S530, calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter.
And S540, taking the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result as a current processing result.
And S550, adding the current processing result into the row and/or column of the banknote magnetic detection result, and establishing the corresponding relation between the current processing result and the row and/or column of the banknote magnetic detection result.
And S560, judging whether the corresponding relation between all counting results in the counting period and the magnetic detection result of the paper money is established, if so, executing S570, otherwise, executing S540.
And S570, obtaining a positioning result of the interference phase in the paper currency magnetic detection result according to the corresponding relation.
Specifically, the real-time phase positioning result of the magnetic floating shaft corresponding to the real-time counting result of the encoder is added to the row and/or column of the magnetic detection result of the paper money obtained by the magnetic sensor. In the process of magnetically detecting and identifying the paper money by the magnetic sensor, the magnetic data of the paper money may be scanned in lines, the magnetic data of the paper money may be scanned in columns, the magnetic data of the paper money may be scanned in lines and then in columns, or the magnetic data of the paper money may be scanned in columns and then in rows, which is not limited in the present invention. Scanning data of the magnetic detection of the paper money is acquired, and a corresponding relation is established between the scanning data of the magnetic detection of the paper money and a real-time phase positioning result, illustratively, a corresponding relation is established between line data of the magnetic detection of the paper money and a real-time phase positioning result. And when the magnetic detection result of the paper money has interference, the positioning result of the interference phase of the magnetic floating shaft can be obtained.
S580, determining the magnetization position of the magnetic floating shaft according to the positioning result of at least one interference phase corresponding to at least one counting period;
and S590, correcting the magnetic detection result of the paper currency according to the magnetization position to remove the interference of the magnetization position of the magnetic floating shaft on the magnetic detection result of the paper currency.
Specifically, the positioning result of the corresponding magnetic floating shaft interference phase may be determined through one counting period of at least one counter, or may be determined through two or more counting periods of at least one counter, that is, the positioning result of the interference phase is determined by averaging a plurality of samples, which is not limited in this respect. And acquiring a positioning result of the magnetic floating shaft interference phase, namely determining the magnetization position of the magnetic floating shaft, and correcting the paper currency magnetic detection result according to the corresponding relation between the magnetic floating shaft interference phase and the paper currency magnetic detection result so as to eliminate the adverse effect of the magnetic floating shaft magnetization position on the paper currency magnetic detection result accuracy.
According to the interference positioning method provided by the fifth embodiment of the invention, after the positioning result of the interference phase is obtained, the adverse effect of the magnetization of the magnetic floating shaft on the paper currency magnetic detection result can be conveniently corrected by using a correction algorithm subsequently, and the accuracy of the paper currency magnetic detection result is improved.
EXAMPLE six
Fig. 6 is a schematic structural diagram of an interference positioning apparatus in a sixth embodiment of the present invention, where the apparatus is applied to a situation where a magnetic floating shaft interference phase is positioned by obtaining a count result of a pulse signal output by an encoder corresponding to the magnetic floating shaft in a rotation period, and the apparatus may be implemented in a software and/or hardware manner, and is generally integrated in a Field Programmable Gate Array (FPGA). As shown in fig. 6, the apparatus includes: a total count obtaining module 610, a count parameter determining module 620, a real-time phase positioning result calculating module 630, and an interference phase positioning result obtaining module 640, wherein:
a total count acquisition module 610, configured to determine a total count of the encoder when the magnetically floating shaft makes a complete rotation according to a relationship between a rotational angular velocity of the magnetically floating shaft and a rotational angular velocity of the encoder;
a counting parameter determination module 620, configured to determine a counting parameter of at least one counter matching a rotation period of the magnetically floating shaft according to a total counting amount of the encoder, where the counting parameter includes: a count step size, and/or a count period;
a real-time phase positioning result calculating module 630, configured to calculate a real-time phase positioning result of the magnetic floating shaft matching the real-time counting result according to the counting parameter of the at least one counter and the real-time counting result of the at least one counter;
and the interference phase positioning result acquiring module 640 is configured to add the real-time phase positioning result of the magnetic floating shaft to the paper currency magnetic detection result, establish a corresponding relationship between the real-time phase positioning result and the paper currency magnetic detection result, and obtain a positioning result of an interference phase.
According to the embodiment of the invention, the phase position of interference of the magnetic floating shaft on the paper currency magnetic detection can be accurately positioned according to the rotation corresponding relation between the encoder and the magnetic floating shaft, so that the paper currency authenticity identification can be conveniently carried out according to the paper currency magnetic detection result subsequently, the accuracy of the paper currency magnetic detection result is improved, the accuracy of the paper currency authenticity identification is further improved, and meanwhile, the reliability of the self-service financial equipment is improved.
On the basis of the foregoing embodiment, the count total obtaining module may include:
a ratio calculation unit for calculating a ratio between a rotational angular velocity of the magnetically floating shaft and a rotational angular velocity of the encoder;
the encoder basic data acquisition unit is used for acquiring the total counting amount of the corresponding output signals of the encoder in a complete rotation;
and the total counting amount calculating unit is used for determining the result of the product of the ratio and the total counting amount of the output signals corresponding to one complete rotation of the encoder as the total counting amount of the encoder corresponding to one complete rotation of the magnetic floating shaft.
On the basis of the above embodiment, the counting parameter determining module may include:
a first count parameter determination unit for determining the total count amount of the encoder as a count period of a standard counter that matches a rotation period of the magnetically floating shaft and determining a count step of the standard counter as 1 if it is determined that the total count amount of the encoder is an integer;
a second count parameter determination unit configured to construct an integer counter and a correction counter if it is determined that the total count amount of the encoder is not an integer, and determine an integer count parameter of the integer counter and a correction count parameter of the correction counter that match a rotation period of the magnetic floating shaft, based on the total count amount of the encoder.
On the basis of the above embodiment, the second counting parameter determining unit may include:
an integer subunit, configured to obtain an operation result of rounding up a total count of the encoder, determine the operation result as the integer count period, and determine an integer count step corresponding to the integer count period as 1;
and the syndrome unit is used for acquiring the counting error of the integer counting period corresponding to the operation of rounding up and determining the numerator of the counting error as a correction counting step.
On the basis of the foregoing embodiment, the real-time phase positioning result calculating module may include:
a corrected counting result acquiring unit configured to acquire a corrected counting result counted by the correction counter in accordance with the corrected counting step with the numerator of the counting error as a counting start point;
a correction count result re-determination unit configured to re-determine that the correction count result is a ratio of an updated correction count result including a difference between the correction count result and the set threshold value and a denominator of the count error if it is determined that the correction count result is equal to or greater than the set threshold value;
and the real-time counting result determining unit is used for determining the real-time counting result according to the integer counting result obtained by the integer counter and the correction counting result obtained by the correction counter.
On the basis of the foregoing embodiment, the real-time phase positioning result calculating module may further include:
a real-time counting result obtaining unit, configured to obtain a real-time counting result corresponding to a total counting amount of the encoder being an integer, or a real-time counting result corresponding to the total counting amount of the encoder not being an integer;
a calculation unit for calculating according to the calculation formula
Obtaining a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result, wherein w represents the real-time phase positioning result, and n represents the real-time phase positioning resultiRepresenting the real-time counting result, N representing the total counting amount of the encoder when the magnetic floating shaft rotates for one complete revolution, i is equal to [1, N]And i is a positive integer, and pi represents 180 degrees.
On the basis of the foregoing embodiment, the interference phase positioning result obtaining module may include:
the current processing unit is used for taking the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result as a current processing result;
the corresponding relation establishing unit is used for adding the current processing result into the row and/or column of the banknote magnetic detection result and establishing the corresponding relation between the current processing result and the row and/or column of the banknote magnetic detection result;
the circulation unit is used for returning and executing the operation of taking the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result as the current processing result until the corresponding relation is established between all counting results in the counting period and the magnetic detection result of the paper money;
and the positioning result acquisition unit is used for acquiring a positioning result of the interference phase in the paper currency magnetic detection result according to the corresponding relation.
On the basis of the above embodiment, the apparatus may further include:
a magnetization position determination unit configured to determine a magnetization position of the magnetically floating shaft based on a positioning result of at least one of the disturbance phases corresponding to at least one of the count cycles;
and the correction unit is used for correcting the paper currency magnetic detection result according to the magnetization position so as to remove the interference of the magnetization position of the magnetic floating shaft on the paper currency magnetic detection result.
The interference positioning device provided by the embodiment of the invention can execute the interference positioning method provided by any embodiment of the invention, and has the corresponding functional module and beneficial effects of executing the interference positioning method.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An interference localization method, comprising:
determining the total count amount of an encoder when the magnetically floating shaft makes a complete rotation according to the relationship between the rotation angular velocity of the magnetically floating shaft and the rotation angular velocity of the encoder;
determining a count parameter of at least one counter matching a rotation period of the magnetically floating shaft from a count total of the encoder, wherein the count parameter comprises: a count step size, and/or a count period;
calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter;
and adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing the corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result, and obtaining the positioning result of the interference phase.
2. The method according to claim 1, wherein determining a total count amount of an encoder when the magnetically floating shaft makes one complete rotation according to a relationship between a rotational angular velocity of the magnetically floating shaft and a rotational angular velocity of the encoder comprises:
calculating a ratio between a rotational angular velocity of the magnetically floating shaft and a rotational angular velocity of the encoder;
acquiring the total counting amount of the corresponding output signals of the encoder which rotates for one circle completely;
and determining the result of the product of the ratio and the total counting amount of the output signals corresponding to one complete rotation of the encoder as the total counting amount of the encoder corresponding to one complete rotation of the magnetic floating shaft.
3. The method according to claim 1 or 2, wherein determining a count parameter of at least one counter matching a rotation period of the magnetically floating shaft from a total number of counts of the encoder comprises:
determining the total count of the encoder as a count period of a standard counter that matches the rotation period of the magnetically floating shaft and determining a count step of the standard counter as 1 if it is determined that the total count of the encoder is an integer;
if the total count amount of the encoder is determined not to be an integer, an integer counter and a correction counter are constructed, and an integer count parameter of the integer counter and a correction count parameter of the correction counter that match the rotation period of the magnetically floating shaft are determined based on the total count amount of the encoder.
4. The method of claim 3, wherein determining the integer count parameter of the integer counter and the corrected count parameter of the corrected counter that match the period of rotation of the magnetically floating shaft based on the total number of counts of the encoder comprises:
acquiring an operation result of rounding up the total count of the encoder, determining the operation result as an integer count period, and determining an integer count step corresponding to the integer count period as 1;
and acquiring a counting error of an integer counting period corresponding to the operation of rounding up, and determining a numerator of the counting error as a correction counting step.
5. The method of claim 4, wherein calculating a real-time phase location result of the magnetically floating shaft matching the real-time counting result based on the counting parameters of the at least one counter and the real-time counting result of the at least one counter comprises:
acquiring a correction counting result counted by the correction counter according to the correction counting step length by taking the numerator of the counting error as a counting starting point;
if the correction counting result is determined to be larger than or equal to a set threshold, re-determining the correction counting result to be the ratio of an updated correction counting result and the denominator of the counting errors, wherein the updated correction counting result comprises the difference value between the correction counting result and the set threshold;
and determining the real-time counting result according to the integer counting result obtained by the integer counter and the correction counting result obtained by the correction counter.
6. The method of claim 5, wherein determining the real-time counting result according to the integer counting result obtained by the integer counter and the calibration counting result obtained by the calibration counter comprises:
acquiring a real-time counting result corresponding to the total counting amount of the encoder when the total counting amount of the encoder is an integer, or acquiring a real-time counting result corresponding to the total counting amount of the encoder when the total counting amount of the encoder is not an integer;
according to a formula
Obtaining a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result, wherein w represents the real-time phase positioning result, and n represents the real-time phase positioning resultiRepresenting the real-time counting result, N representing the complete rotation of the magnetic floating shaftThe total number of counts of the encoder, i ∈ [1, N ] for one revolution]And i is a positive integer, and pi represents 180 degrees.
7. The method according to claim 1, wherein adding the real-time phase positioning result of the magnetic floating shaft to the paper currency magnetic detection result, and establishing the corresponding relationship between the real-time phase positioning result and the paper currency magnetic detection result to obtain the positioning result of the interference phase comprises:
taking the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result as a current processing result;
adding the current processing result into the row and/or column of the banknote magnetic detection result, and establishing a corresponding relation between the current processing result and the row and/or column of the banknote magnetic detection result;
returning to execute the operation of taking the real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result as the current processing result until the corresponding relation is established between all counting results in the counting period and the paper currency magnetic detection result;
and obtaining a positioning result of the interference phase in the paper currency magnetic detection result according to the corresponding relation.
8. The method according to claim 1 or 7, wherein the step of adding the real-time phase positioning result of the magnetic floating shaft into the magnetic detection result of the paper currency, establishing the corresponding relationship between the real-time phase positioning result and the magnetic detection result of the paper currency, and after obtaining the positioning result of the interference phase, further comprises the following steps:
determining the magnetization position of the magnetic floating shaft according to the positioning result of at least one interference phase corresponding to at least one counting period;
and correcting the magnetic detection result of the paper currency according to the magnetization position so as to remove the interference of the magnetization position of the magnetic floating shaft on the magnetic detection result of the paper currency.
9. An interference localization apparatus, comprising:
the counting total acquisition module is used for determining the counting total of the encoder when the magnetic floating shaft rotates for one circle completely according to the relation between the rotation angular velocity of the magnetic floating shaft and the rotation angular velocity of the encoder;
a counting parameter determination module for determining a counting parameter of at least one counter matching a rotation period of the magnetically floating shaft based on a total count of the encoder, wherein the counting parameter comprises: a count step size, and/or a count period;
the real-time phase positioning result calculating module is used for calculating a real-time phase positioning result of the magnetic floating shaft matched with the real-time counting result according to the counting parameters of the at least one counter and the real-time counting result of the at least one counter;
and the interference phase positioning result acquisition module is used for adding the real-time phase positioning result of the magnetic floating shaft into the paper currency magnetic detection result, establishing the corresponding relation between the real-time phase positioning result and the paper currency magnetic detection result and obtaining the positioning result of the interference phase.
10. The apparatus of claim 9, wherein the count parameter determination module comprises:
a first count parameter determination unit for determining the total count amount of the encoder as a count period of a standard counter that matches a rotation period of the magnetically floating shaft and determining a count step of the standard counter as 1 if it is determined that the total count amount of the encoder is an integer;
a second count parameter determination unit configured to construct an integer counter and a correction counter if it is determined that the total count amount of the encoder is not an integer, and determine an integer count parameter of the integer counter and a correction count parameter of the correction counter that match a rotation period of the magnetic floating shaft, based on the total count amount of the encoder.
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