CN108537302B - Method and system for settling accounts of commodities in shopping cart - Google Patents
Method and system for settling accounts of commodities in shopping cart Download PDFInfo
- Publication number
- CN108537302B CN108537302B CN201810240895.4A CN201810240895A CN108537302B CN 108537302 B CN108537302 B CN 108537302B CN 201810240895 A CN201810240895 A CN 201810240895A CN 108537302 B CN108537302 B CN 108537302B
- Authority
- CN
- China
- Prior art keywords
- shopping cart
- rfid tag
- rfid
- tag
- commodity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0252—Radio frequency fingerprinting
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0036—Checkout procedures
- G07G1/0045—Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader
- G07G1/009—Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader the reader being an RFID reader
Abstract
The invention provides a method and a system for settling accounts of commodities in a shopping cart. The method comprises the following steps: judging whether the goods are positioned in the shopping cart or not according to the first RFID label, the second RFID label and the third RFID label positioned on the outer surface of the shopping cart; if the commodity is located in the shopping cart, obtaining price information of the commodity according to the third RFID label; according to the price information of all the commodities in the shopping cart, all the commodities are settled; the first RFID tag is located at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart, and the second RFID tag is located at a second vertex of the body diagonal. The method and the system provided by the invention can be used for setting the tag reader in any area to accurately settle accounts for all commodities in the shopping cart, wherein the area of any area is not limited, so that the method also saves settlement fields and is convenient to deploy and popularize on site.
Description
Technical Field
The invention relates to the technical field of wireless perception, in particular to a method and a system for settling accounts of commodities in a shopping cart.
Background
Today, the living standard of people is continuously improved, and the consumption capacity of people is also greatly increased. In the online shopping platform such as Taobao Jingdong, customers can browse commodities and add the commodities into a shopping cart, and click the 'all-selection' and 'payment' buttons during settlement to finish the batch purchase and settlement of the commodities in the shopping cart. Meanwhile, the development of the conventional offline supermarket is greatly impacted. With the increasing scale of customers and the increasing cost of human labor, the conventional offline supermarket settlement system cannot meet the needs of customers. On the one hand, customers may need to purchase goods at any time of day, and engaging store personnel for 24-hour attendance would greatly increase operating costs. On the other hand, the method of manually scanning the bar code requires that the shop assistant scans the bar code piece by piece, which not only affects the efficiency of settlement and causes large-scale customer waiting, but also causes the possibility of wrong scanning or missing scanning due to misoperation of the shop assistant, and causes economic loss of customers or supermarkets.
Currently, settlement solutions mainly adopted by the conventional offline supermarket are mainly divided into two types. The first method is still based on traditional bar code scanning, and a self-service code scanning machine is arranged, so that a customer can complete code scanning and settlement operations. This approach can theoretically reduce the labor cost of hiring store personnel, but still does not address customer waiting problems when the volume of merchandise is large. The second method is based on Radio Frequency Identification (RFID) technology, and completes settlement by attaching an RFID tag to a package of a commodity and setting an RFID reader in a settlement passage. By reading the RFID label information, the automatic settlement and theft prevention of the commodities can be realized, and the problem of customer waiting when the quantity of the commodities is large is solved to a certain extent.
However, because the read-write range of the conventional RFID technology is not controllable, in order to avoid interference and misreading, an area is often required to be separately defined in a specific implementation process (such as an unmanned supermarket like coffee washing), a settlement channel is set, a tag reader is arranged in the channel, only one shopping cart is allowed to exist in the effective read-write area range of the tag reader during settlement every time, and because the effective read-write area range of the tag reader is large, the floor area of the settlement channel is correspondingly large, only one shopping cart is allowed to exist in a large floor area, so that site resources are wasted, and the field deployment and popularization are not facilitated.
Disclosure of Invention
The invention provides a method and a system for settling commodities in a shopping cart, which solve the problem that the existing settling place required for realizing automatic settlement by reading RFID label information is large.
According to an aspect of the present invention, there is provided a method of settling accounts for goods in a shopping cart, comprising:
the method comprises the steps that phase information of each RFID label is obtained according to a first RFID label and a second RFID label which are positioned on the outer surface of a shopping cart and a third RFID label which is positioned on the outer surface of a commodity; judging whether the commodity is positioned in the shopping cart or not according to the phase information of all the RFID tags;
if the commodity is located in the shopping cart, acquiring price information of the commodity according to the third RFID label; according to the price information of all the commodities in the shopping cart, settling accounts for all the commodities;
the first RFID tag is located at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart, and the second RFID tag is located at a second vertex of the body diagonal.
According to another aspect of the present invention, there is provided a settlement system for goods in a shopping cart, comprising:
the shopping cart comprises a tag reader, a shopping cart, a first RFID tag and a second RFID tag; wherein the content of the first and second substances,
the first RFID tag is positioned at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart;
the second RFID tag is positioned at a second vertex of the body diagonal;
the system further comprises a third RFID tag, wherein the third RFID tag is positioned on the outer surface of the commodity;
the tag reader is used for judging whether the commodity is positioned in the shopping cart or not according to the first RFID tag, the second RFID tag and the third RFID tag so as to enable the commodity to settle accounts of all commodities in the shopping cart.
According to still another aspect of the present invention, there is provided a computer apparatus comprising:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, which when called by the processor are capable of performing the methods described above.
According to yet another aspect of the invention, there is provided a non-transitory computer readable storage medium storing computer instructions which cause the computer to perform the method described above.
According to the method and the system for settling the commodities in the shopping cart, provided by the invention, whether the commodities are positioned in the shopping cart is judged, and then all the commodities in the shopping cart are settled, so that a supermarket can arrange the tag reader in any area and accurately settle all the commodities in the shopping cart through the tag reader, wherein the area of any area is not limited, therefore, the method also saves a settlement field and is convenient to deploy and popularize on the spot. On the basis of avoiding manual operation and greatly improving the settlement efficiency and accuracy, the mutual overlapping of reading areas when a plurality of label readers work together can be effectively avoided, the settlement can be simultaneously carried out by a plurality of settlement channels, and the settlement can be conveniently deployed in a real scene.
Drawings
FIG. 1 is a flow chart of a method for settling the items in a shopping cart according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a shopping cart provided with an RFID tag according to an embodiment of the present invention;
FIG. 3 is a schematic view of a shopping cart located in an effective read-write area of a tag reader according to an embodiment of the present invention;
FIG. 4 is a phase-time diagram of an RFID tag provided in accordance with an embodiment of the present invention;
FIG. 5 is a phase-time diagram of an x-tag and a z-tag provided in accordance with an embodiment of the present invention;
fig. 6 is a phase-time diagram of a y-tag and a z-tag according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Note that "settlement" referred to hereinafter means calculation of a price. Generally, after the settlement of the commodity is completed, the customer pays for the commodity based on the settlement information.
The invention provides a method and a system for settling commodities in a shopping cart, which aim to solve the problem that the occupied area of a settlement channel required by automatic settlement realized by reading RFID label information is large.
Fig. 1 is a flowchart of a method for settling the items in the shopping cart according to an embodiment of the present invention, as shown in fig. 1, the method includes:
the method comprises the steps that phase information of each RFID label is obtained according to a first RFID label and a second RFID label which are positioned on the outer surface of a shopping cart and a third RFID label which is positioned on the outer surface of a commodity; and judging whether the commodity is positioned in the shopping cart or not according to the phase information of all the RFID tags.
If the commodity is located in the shopping cart, acquiring price information of the commodity according to the third RFID label; and settling accounts for all the commodities according to the price information of all the commodities in the shopping cart.
The first RFID tag is located at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart, and the second RFID tag is located at a second vertex of the body diagonal.
Specifically, RFID technology, also known as RFID, is a communication technology that can identify a specific object and read/write related data by radio signals without establishing mechanical or optical contact between an identification system and the specific object.
RFID tags are physical carriers of Electronic Product Codes (EPC), attached to trackable items, which circulate globally and identify and read and write them.
In this embodiment, at least two RFID tags are attached to the outer surface of the shopping cart. For the sake of distinction, the two RFID tags are referred to as a first RFID tag and a second RFID tag, respectively. The first RFID tag is located at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart, and the second RFID tag is located at a second vertex of the body diagonal.
The RFID tags disposed on the outer surface of each shopping cart have the same ID, and the tag reader can determine that all the RFID tags having the same ID are located on the outer surface of the same shopping cart according to the ID.
When the shopping cart passes through the effective reading and writing area range of the tag reader, the tag reader can acquire the phase information of the first RFID tag and the phase information of the second RFID tag according to the first RFID tag and the second RFID tag. When the commodity passes through the effective read-write area range of the tag reader, the tag reader can acquire the phase information of the third RFID tag according to the third RFID tag.
The tag reader can acquire the position relation between the commodity and the shopping cart according to the phase information of the first RFID tag, the phase information of the second RFID tag and the phase information of the third RFID tag, and then judges whether the commodity is located in the shopping cart.
If the commodity is located in the shopping cart, obtaining price information of the commodity according to the third RFID label; and settling accounts for all the commodities according to the price information of all the commodities in the shopping cart. After the settlement is completed, the customer can pay for all the goods in the shopping cart.
It should be noted that, if there are a plurality of shopping carts within the effective read-write area of the tag reader and a plurality of products in each shopping cart, the present embodiment may acquire the products placed in each shopping cart and settle accounts for all the products in the shopping cart, so that the customer pays for all the products in the shopping cart according to the settled account information.
For example, shopping carts within the effective reading and writing area of the tag reader are shopping cart A and shopping cart B, wherein fruits, vegetables and yoghourt are placed in the shopping cart A, and biscuits and toothpaste are placed in the shopping cart B. In the prior art, the read-write range of the automatic settlement method based on the RFID technology is not controllable, so that in some cases, when the settlement is performed on all the commodities in the shopping cart A, the biscuits and toothpaste in the shopping cart B are also used as the commodities in the shopping cart A for settlement, thereby causing misoperation and causing unnecessary troubles to both the supermarket and the customer. Therefore, in order to avoid the above situation, in the prior art, a single large area is usually defined as a settlement channel, a tag reader is arranged in the channel, only one shopping cart is allowed to exist in the range of the effective read-write area of the tag reader during settlement, and the settlement channel has a large area, so that the settlement channel is inconvenient to deploy and popularize in the field.
In the embodiment of the invention, the position relation between the commodity and the shopping cart is judged firstly, and then the settlement is carried out on all the commodities in the shopping cart according to the position relation, so that the settlement is not carried out by using the biscuits and the toothpaste in the shopping cart B as the commodities in the shopping cart A. Therefore, if the method in the embodiment of the invention is applied to the commodity settlement, a larger area does not need to be defined independently as a settlement channel, and all commodities in each shopping cart can be accurately settled even if a plurality of shopping carts exist in a smaller area.
According to the method for settling the commodities in the shopping cart, whether the commodities are located in the shopping cart or not is judged, then all the commodities in the shopping cart are settled, so that a supermarket can set a tag reader in any area, and all the commodities in the shopping cart are accurately settled through the tag reader, wherein the area of any area is not limited, and therefore the method saves a settlement place and is convenient to deploy and popularize on site. On the basis of avoiding manual operation and greatly improving the settlement efficiency and accuracy, the mutual overlapping of reading areas when a plurality of label readers work together can be effectively avoided, the settlement can be simultaneously carried out by a plurality of settlement channels, and the settlement can be conveniently deployed in a real scene.
Wherein, according to the first RFID label that is located shopping cart outer surface, second RFID label and the third RFID label that is located the commodity surface, acquire the phase information of each RFID label, specifically include:
for each RFID tag, sampling the phase of the RFID tag to obtain a plurality of sampling points; each sampling point comprises time and a phase corresponding to the time;
and acquiring the phase information of the RFID tag according to all sampling points.
The phase p of the RFID tag is as follows:
wherein l is a distance between the RFID tag and an antenna in a tag reader, λ is a wavelength of a signal for communicating the RFID tag with the antenna, μ is a natural noise of a system formed by the RFID tag and the antenna, and mod is a complementary function.
In particular, due to the environmental impact and the limited sampling frequency of the tag reader (around 40 Hz), the original phase information read by the tag reader often has interference and missing values. Wherein, the original phase information is composed of a plurality of sampling points containing time and phase. Therefore, the raw phase information needs to be preprocessed, and the preprocessing process is as follows:
establishing a rectangular coordinate system by taking time as an abscissa and taking a phase as an ordinate;
mapping all the sampling points to the rectangular coordinate system to generate a phase-time diagram; wherein the phase-time diagram is composed of a plurality of groups of bilaterally symmetrical V-shaped curves;
acquiring a symmetry axis of the phase-time diagram, and acquiring a target V-shaped curve which is closest to the symmetry axis in the horizontal direction from a plurality of groups of V-shaped curves;
fitting the target V-shaped curve based on a least square method to obtain a fitted target V-shaped curve;
and taking the information carried by the fitted target V-shaped curve as the phase information.
Based on the above embodiments, this embodiment describes a specific process of determining whether the product is located in the shopping cart according to the phase information of all the RFID tags:
acquiring a corresponding fitting target V-shaped curve according to the phase information of each RFID label;
and comparing the fitted target V-shaped curves corresponding to all the RFID tags, and judging whether the commodity is positioned in the shopping cart.
It should be noted that, the fitting target V-shaped curve carries information including the time included in each point in the curve and the phase corresponding to the time.
The method comprises the following steps of comparing the fitted target V-shaped curves corresponding to all RFID tags, and judging whether the commodity is located in the shopping cart, wherein the method specifically comprises the following steps:
acquiring a first fitting target V-shaped curve corresponding to a first RFID label, and acquiring a first vertex of the first fitting target V-shaped curve, wherein the first vertex is an intersection point of the first fitting target V-shaped curve and a self symmetrical axis;
acquiring a second fitting target V-shaped curve corresponding to a second RFID label, and acquiring a second vertex of the second fitting target V-shaped curve, wherein the second vertex is an intersection point of the second fitting target V-shaped curve and a self symmetrical axis;
acquiring a third fitting target V-shaped curve corresponding to a third RFID label, and acquiring a third vertex of the third fitting target V-shaped curve, wherein the third vertex is an intersection point of the third fitting target V-shaped curve and a self symmetrical axis;
acquiring a first maximum width of the first fitting target V-shaped curve in the horizontal direction, acquiring a second maximum width of the second fitting target V-shaped curve in the horizontal direction, and acquiring a third maximum width of the third fitting target V-shaped curve in the horizontal direction;
and if the time value corresponding to the third vertex is located in a time interval formed by the time value corresponding to the first vertex and the time value corresponding to the second vertex, and the third maximum width is located in a width interval formed by the first maximum width and the second maximum width, determining that the commodity is located in the shopping cart.
Wherein the first maximum width is a maximum value of a width of the first fitted target V-shaped curve in the horizontal direction. The second maximum width and the third maximum width are similar to the first maximum width, and are not described herein again.
Based on the above embodiments, this embodiment is described as a preferred embodiment, and a method for settling the items in the shopping cart in the above embodiments is described with reference to the drawings.
Fig. 2 is a schematic structural diagram of a shopping cart provided with an RFID tag according to an embodiment of the present invention, and fig. 3 is a schematic view of a scenario in which the shopping cart is located in an effective read-write area of a tag reader according to an embodiment of the present invention. As shown in fig. 2 and 3, two RFID tags, which are called a first RFID tag (x-tag) and a second RFID tag (y-tag), are respectively disposed at two vertexes of a diagonal line of a cube formed by the accommodating units of the shopping cart. In order to better explain the working principle of the scheme of the invention, a z label is arranged at the vertex of the other body diagonal of the shopping cart, and it needs to be noted that the z label is not arranged on the outer surface of the shopping cart in the process of applying the method for settlement.
Each of the articles has an RFID tag provided on an outer surface thereof, and the RFID tag provided on the outer surface of the article is referred to as a third RFID tag for the purpose of distinguishing the article from the article.
When a shopping cart passes through the effective reading and writing area of the tag reader, the tag reader can match commodities with the shopping cart according to the first RFID tag (x tag), the second RFID tag (y tag) and the third RFID tag, judge commodities contained in each shopping cart and acquire price information of the commodities according to the third RFID tag; and according to the price information of all the commodities in the shopping cart, carrying out settlement on all the commodities in the shopping cart.
Unlike the conventional method, determining whether the product is located in the shopping cart through the phase information mainly has the following challenges. First, in the communication process between the tag reader and the RFID tag, the propagation of electromagnetic waves is easily interfered by the environment, resulting in noise and distortion of the signal acquired by the tag reader. Secondly, the existing technology can only realize the positioning of the label on a two-dimensional plane, and the commodity and the shopping cart are in a three-dimensional structure in a real scene, so that the positioning difficulty is increased.
The phase p of the RFID tag is:
wherein l is a distance between the RFID tag and an antenna in a tag reader, λ is a wavelength of a signal for communicating the RFID tag with the antenna, μ is a natural noise of a system formed by the RFID tag and the antenna, and mod is a complementary function.
It can be found from the formula that the phase of the RFID tag changes within [0,2 pi ] along with the distance from the RFID tag to the antenna. When the RFID label moves in front of the antenna, the distance between the RFID label and the antenna is firstly reduced and then increased, and the distance is minimized when the connecting line between the RFID label and the antenna is vertical to the moving direction. Fig. 4 is a phase-time diagram of an RFID tag according to an embodiment of the present invention, as shown in fig. 4, the phase of the tag will change regularly, and a "V-shaped region" is shown (the lowest point of the "V-shaped region" corresponds to the position where the tag is closest to the antenna), and the "V-shaped region" is referred to as a target V-shaped curve.
The method mainly develops research from the following aspects: firstly, preprocessing label phase information, removing noise and completing a missing value; secondly, modeling the shopping cart according to the phase information of the first RFID label and the phase information of the second RFID label; thirdly, whether the commodity is in the shopping cart or not is judged according to the phase information of the first RFID label, the phase information of the second RFID label and the phase information of the third RFID label.
The phase information preprocessing process of the RFID tag is as follows:
due to the influence of the environment and the limited sampling frequency (about 40 Hz) of the tag reader, the original phase information read by the tag reader often has interference and missing values. Considering the symmetric signal change form of the phase of the RFID tag in the moving process, for the RFID tag i, the target V-shaped curve is first located from the multiple sampling points, and the sampling point set S is obtained according to the target V-shaped curvei＝{(t1,p1),(t2,p2),...,(tn,pn) Where t isj(j is more than or equal to 1 and less than or equal to n) is time, pj(j is more than or equal to 1 and less than or equal to n) generationThe table labels the phase at that time. In order to more accurately find the vertex (lowest point) of the target V-shaped curve, the present embodiment uses the least square method to set S of sampling pointsiPerforming Quadratic fitting (Quadratic fitting), filling missing values, and finally finding the vertex (t) of the target V-shaped curve from the fitted curveimin,pimin)。
The process of modeling the shopping cart space using the phase information of the first RFID tag and the phase information of the second RFID tag is as follows:
the cube formed by the accommodating units of the shopping cart can be uniquely determined by two vertexes on a body diagonal line, and an x label and a y label arranged on the shopping cart can reflect the spatial range of the shopping cart.
Specifically, when an x tag and a y tag pass through an antenna in the horizontal direction, phases read by a tag reader can present multiple groups of bilaterally symmetrical V-shaped curves in a rectangular coordinate system. By observing the forms of the corresponding fitting target V-shaped curves, the spatial relationship between the x label and the y label can be determined, and further the spatial position of the shopping cart is modeled.
Fig. 5 is a phase-time diagram of an x-tag and a z-tag according to an embodiment of the present invention, as shown in fig. 5, since the x-tag is located in front of the moving direction and the x-tag passes through the antenna before the z-tag, a V-shaped curve (dotted line) of the target of the x-tag appears first, and it can be seen that t is reflected in the diagramxmin＜tzmin。
Fig. 6 is a phase-time diagram of a y-tag and a z-tag according to an embodiment of the present invention, where the z-tag and the y-tag are synchronized in the moving direction, so that the fitting target V-shaped curves of the z-tag and the y-tag appear simultaneously, as shown in fig. 6. But since the z-tag is closer to the antenna than the y-tag, in the horizontal direction, the maximum width w of the fitted target V-shaped curve (solid line) of the z-tagzAnd is more narrow.
The process of judging whether the commodity is in the shopping cart or not according to the phase information of the first RFID tag, the phase information of the second RFID tag and the phase information of the third RFID tag is as follows:
it can be found from the above derivation procedure that when set upWhen a shopping cart or goods of the RFID label passes by the antenna, the space position relation of the RFID label can be reflected by fitting the target V-shaped curve. For a certain commodity provided with an RFID label i, positioning the time t of the vertex of a target V-shaped curve fitted by the certain commodityiminAnd txminAnd tzminThe relationship therebetween can determine the relative position of the item in the direction of travel of the cart. Wherein, tzminAnd tyminEqual, txminTime, t, for the vertex of the fitting target V-shaped curve corresponding to the x labelzminTime, t, for the vertex of the fitting target V-shaped curve corresponding to the z-labelyminFitting the vertex of the target V-shaped curve corresponding to the y label; similarly, by comparing the widths of the RFID tags fitted to the target V-shaped curve, the relative position of the item in the direction perpendicular to the direction of movement of the cart can be determined.
That is, for an article whose outer surface is provided with an RFID tag i, it is a sufficient necessary condition that it is located in the shopping cart space:
txmin＜timin＜tyminand wx＜wi＜wy，
Wherein, wxMaximum width in the horizontal direction, w, of the fitted target V-shaped curve corresponding to the x-labelyMaximum width in horizontal direction, w, of fitted target V-shaped curve corresponding to y labeliAnd the maximum width of the corresponding fitted target V-shaped curve of the RFID label positioned on the outer surface of the commodity in the horizontal direction.
Based on the above embodiment, according to the first RFID tag located on the outer surface of the shopping cart, the second RFID tag and the third RFID tag located on the outer surface of the commodity, before obtaining the phase information of each RFID tag, the method further includes:
arranging a payment tag on the outer surface of the shopping cart; the payment tag is used for providing a payment link, so that a payer of all commodities in the shopping cart obtains settlement information of all commodities in the shopping cart according to the payment link and pays according to the settlement information.
In particular, in real applications, in addition to posting RFID tags on the diagonal lines of goods and shopping carts, payment links, such as two-dimensional codes and the like, need to be pasted on shopping carts. The payment links correspond to shopping carts in a one-to-one manner, when the shopping carts are pushed through a settlement channel, the system automatically settles the commodities in the shopping carts and submits settlement details, and a customer can complete payment by accessing the payment links of the shopping carts, such as scanning two-dimensional codes.
Based on the above embodiments, the present embodiment provides a system for settling accounts of goods in a shopping cart, including:
the shopping cart comprises a tag reader, a shopping cart, a first RFID tag and a second RFID tag; wherein the content of the first and second substances,
the first RFID tag is positioned at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart;
the second RFID tag is positioned at a second vertex of the body diagonal;
the system further comprises a third RFID tag, wherein the third RFID tag is positioned on the outer surface of the commodity;
the tag reader is used for judging whether the commodity is positioned in the shopping cart or not according to the first RFID tag, the second RFID tag and the third RFID tag so as to enable the commodity to settle accounts of all commodities in the shopping cart.
It should be noted that, each part in the system of the present embodiment is used for executing the above method embodiment, and specific contents refer to the above method embodiment, which is not limited in this embodiment.
Based on the foregoing embodiment, the system provided in this embodiment further includes:
a third RFID tag located on an outer surface of the item.
Correspondingly, the tag reader is used for judging whether the commodity is positioned in the shopping cart according to the first RFID tag, the second RFID tag and the third RFID tag so as to settle accounts of all commodities in the shopping cart.
Based on the above embodiment, another embodiment of the present invention discloses a computer device, including: at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the synchronization method provided by the method embodiments, for example, the method includes: the method comprises the steps that phase information of each RFID label is obtained according to a first RFID label and a second RFID label which are positioned on the outer surface of a shopping cart and a third RFID label which is positioned on the outer surface of a commodity; judging whether the commodity is positioned in the shopping cart or not according to the phase information of all the RFID tags; if the commodity is located in the shopping cart, acquiring price information of the commodity according to the third RFID label; and settling accounts for all the commodities according to the price information of all the commodities in the shopping cart.
Those of ordinary skill in the art will understand that: the implementation of the above-described apparatus embodiments or method embodiments is merely illustrative, wherein the processor and the memory may or may not be physically separate components, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Based on the foregoing embodiments, a further embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions, which cause the computer to execute the method provided by the foregoing method embodiments, for example, including: the method comprises the steps that phase information of each RFID label is obtained according to a first RFID label and a second RFID label which are positioned on the outer surface of a shopping cart and a third RFID label which is positioned on the outer surface of a commodity; judging whether the commodity is positioned in the shopping cart or not according to the phase information of all the RFID tags; if the commodity is located in the shopping cart, acquiring price information of the commodity according to the third RFID label; and settling accounts for all the commodities according to the price information of all the commodities in the shopping cart.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, the embodiments of the present invention are merely preferred embodiments, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for settling a commodity in a shopping cart, comprising:
the method comprises the steps that phase information of each RFID label is obtained according to a first RFID label and a second RFID label which are positioned on the outer surface of a shopping cart and a third RFID label which is positioned on the outer surface of a commodity; judging whether the commodity is positioned in the shopping cart or not according to the phase information of all the RFID tags;
if the commodity is located in the shopping cart, acquiring price information of the commodity according to the third RFID label; according to the price information of all the commodities in the shopping cart, settling accounts for all the commodities;
the first RFID tag is located at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart, and the second RFID tag is located at a second vertex of the body diagonal.
2. The method according to claim 1, wherein the obtaining phase information of each RFID tag according to the first RFID tag located on the outer surface of the shopping cart, the second RFID tag and the third RFID tag located on the outer surface of the commodity specifically comprises:
for each RFID tag, sampling the phase of the RFID tag to obtain a plurality of sampling points; each sampling point comprises time and a phase corresponding to the time;
and acquiring the phase information of the RFID tag according to all sampling points.
3. The method of claim 2, wherein the phase p of the RFID tag is:
wherein l is a distance between the RFID tag and an antenna in a tag reader, λ is a wavelength of a signal for communicating the RFID tag with the antenna, μ is a natural noise of a system formed by the RFID tag and the antenna, and mod is a complementary function.
4. The method according to claim 2, wherein the obtaining the phase information of the RFID tag according to all the sampling points specifically comprises:
establishing a rectangular coordinate system by taking time as an abscissa and taking a phase as an ordinate;
mapping all the sampling points to the rectangular coordinate system to generate a phase-time diagram; wherein the phase-time diagram is composed of a plurality of groups of bilaterally symmetrical V-shaped curves;
acquiring a symmetry axis of the phase-time diagram, and acquiring a target V-shaped curve which is closest to the symmetry axis in the horizontal direction from a plurality of groups of V-shaped curves;
fitting the target V-shaped curve based on a least square method to obtain a fitted target V-shaped curve;
and taking the information carried by the fitted target V-shaped curve as the phase information.
5. The method as claimed in claim 4, wherein the determining whether the product is located in the shopping cart according to the phase information of all the RFID tags specifically comprises:
acquiring a corresponding fitting target V-shaped curve according to the phase information of each RFID label;
and comparing the fitted target V-shaped curves corresponding to all the RFID tags, and judging whether the commodity is positioned in the shopping cart.
6. The method according to claim 5, wherein the comparing the fitted target V-shaped curves corresponding to all RFID tags to determine whether the item is located in the shopping cart comprises:
acquiring a first fitting target V-shaped curve corresponding to a first RFID label, and acquiring a first vertex of the first fitting target V-shaped curve, wherein the first vertex is an intersection point of the first fitting target V-shaped curve and a self symmetrical axis;
acquiring a second fitting target V-shaped curve corresponding to a second RFID label, and acquiring a second vertex of the second fitting target V-shaped curve, wherein the second vertex is an intersection point of the second fitting target V-shaped curve and a self symmetrical axis;
acquiring a third fitting target V-shaped curve corresponding to a third RFID label, and acquiring a third vertex of the third fitting target V-shaped curve, wherein the third vertex is an intersection point of the third fitting target V-shaped curve and a self symmetrical axis;
acquiring a first maximum width of the first fitting target V-shaped curve in the horizontal direction, acquiring a second maximum width of the second fitting target V-shaped curve in the horizontal direction, and acquiring a third maximum width of the third fitting target V-shaped curve in the horizontal direction;
and if the time value corresponding to the third vertex is located in a time interval formed by the time value corresponding to the first vertex and the time value corresponding to the second vertex, and the third maximum width is located in a width interval formed by the first maximum width and the second maximum width, determining that the commodity is located in the shopping cart.
7. The method of claim 1, wherein the obtaining phase information of each RFID tag according to the first RFID tag located on the outer surface of the shopping cart, the second RFID tag and the third RFID tag located on the outer surface of the commodity further comprises:
arranging a payment tag on the outer surface of the shopping cart; the payment tag is used for providing a payment link, so that a payer of all commodities in the shopping cart obtains settlement information of all commodities in the shopping cart according to the payment link and pays according to the settlement information.
8. A system for settling items in a shopping cart, comprising:
the shopping cart comprises a tag reader, a shopping cart, a first RFID tag and a second RFID tag; wherein the content of the first and second substances,
the first RFID tag is positioned at a first vertex of a body diagonal of a cube formed by the accommodating units of the shopping cart;
the second RFID tag is positioned at a second vertex of the body diagonal;
the system further comprises a third RFID tag, wherein the third RFID tag is positioned on the outer surface of the commodity;
the tag reader is used for judging whether the commodity is positioned in the shopping cart or not according to the first RFID tag, the second RFID tag and the third RFID tag so as to enable the commodity to settle accounts of all commodities in the shopping cart.
9. A computer device, comprising:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 7.
10. A non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810240895.4A CN108537302B (en) | 2018-03-22 | 2018-03-22 | Method and system for settling accounts of commodities in shopping cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810240895.4A CN108537302B (en) | 2018-03-22 | 2018-03-22 | Method and system for settling accounts of commodities in shopping cart |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108537302A CN108537302A (en) | 2018-09-14 |
| CN108537302B true CN108537302B (en) | 2020-07-14 |
Family
ID=63484150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810240895.4A Active CN108537302B (en) | 2018-03-22 | 2018-03-22 | Method and system for settling accounts of commodities in shopping cart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108537302B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111339791B (en) * | 2018-12-18 | 2021-05-25 | 北京京东乾石科技有限公司 | Commodity identification method, commodity identification channel, commodity control device and commodity settlement channel |
| CN113128650B (en) * | 2021-04-20 | 2023-05-12 | 南京大学 | Wire collision detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090016837A (en) * | 2007-08-13 | 2009-02-18 | 주식회사 이엠따블유안테나 | System and method for shopping using smart cart |
| CN201602479U (en) * | 2009-11-09 | 2010-10-13 | 上海交通大学 | Shopping device based on RFID (radio frequency identification) |
| CN103474758A (en) * | 2013-09-29 | 2013-12-25 | 合肥工业大学 | Direction sensing method based on RFID technology |
| CN107066913A (en) * | 2017-05-12 | 2017-08-18 | 南京大学 | A kind of inversion freight detection method based on RFID technique |
| CN107103502A (en) * | 2017-03-07 | 2017-08-29 | 阿里巴巴集团控股有限公司 | A kind of sequence information determines method and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140164176A1 (en) * | 2012-12-11 | 2014-06-12 | Rawllin International Inc. | Fast-checkout using smart cart |
-
2018
- 2018-03-22 CN CN201810240895.4A patent/CN108537302B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090016837A (en) * | 2007-08-13 | 2009-02-18 | 주식회사 이엠따블유안테나 | System and method for shopping using smart cart |
| CN201602479U (en) * | 2009-11-09 | 2010-10-13 | 上海交通大学 | Shopping device based on RFID (radio frequency identification) |
| CN103474758A (en) * | 2013-09-29 | 2013-12-25 | 合肥工业大学 | Direction sensing method based on RFID technology |
| CN107103502A (en) * | 2017-03-07 | 2017-08-29 | 阿里巴巴集团控股有限公司 | A kind of sequence information determines method and apparatus |
| CN107066913A (en) * | 2017-05-12 | 2017-08-18 | 南京大学 | A kind of inversion freight detection method based on RFID technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108537302A (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10846657B2 (en) | Method for tracking stock level within a store | |
| CN208188867U (en) | One kind is for nobody self-service product identification system | |
| CN107103503B (en) | Order information determining method and device | |
| US20150029339A1 (en) | Whole Store Scanner | |
| CN108764386B (en) | Intelligent vending method and system for unmanned supermarket | |
| JP2016009505A (en) | Information collection analysis system and achieve method based on rfid technique | |
| CN105761035A (en) | Gold and jewelry property management system based on smart-RFID electronic tags | |
| CN108537302B (en) | Method and system for settling accounts of commodities in shopping cart | |
| KR102575933B1 (en) | Customer Support Robot Picking | |
| CN108171876B (en) | Unmanned vending container, system and vending method thereof | |
| CN105354736A (en) | Intelligent virtual shop system based on RFID technique and commodity selection algorithm | |
| CN102722944A (en) | Shopping settlement system and method thereof | |
| CN108961611A (en) | A kind of information processing system and method for commodity to be processed | |
| CN113039140B (en) | Position detection system | |
| CN108875690A (en) | Unmanned Retail commodity identifying system | |
| JPH10162247A (en) | Purchased article registration device and purchased article settlement system using the same | |
| CN202404651U (en) | Shopping settlement system | |
| CN204884001U (en) | Intelligent article identification system | |
| CN110706424A (en) | Self-service unmanned supermarket of intelligence | |
| JP6736114B1 (en) | Container transport system | |
| US11263637B2 (en) | Registration apparatus, a method for registering commodity information, and a non-transitory computer readable medium | |
| US11810362B1 (en) | Image-based detection of planogram product spaces | |
| CN211699033U (en) | Human body tracking system | |
| US11842321B1 (en) | Image-based detection of planogram product spaces | |
| CN211906009U (en) | Commodity monitoring control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |