CN113947841B - Payment method, system and equipment based on RFID and weight measurement - Google Patents
Payment method, system and equipment based on RFID and weight measurement Download PDFInfo
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- CN113947841B CN113947841B CN202111557920.XA CN202111557920A CN113947841B CN 113947841 B CN113947841 B CN 113947841B CN 202111557920 A CN202111557920 A CN 202111557920A CN 113947841 B CN113947841 B CN 113947841B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F11/00—Coin-freed apparatus for dispensing, or the like, discrete articles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
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- 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
- G06K17/0029—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 the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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Abstract
The invention relates to a payment method based on RFID and weight measurement, which comprises the following steps: periodically or aperiodically measuring the weight of the items within the shopping device; if the difference between the weight value of the commodity in the shopping equipment measured currently and the weight of the commodity reserved in the last measurement is larger than a set threshold value, starting an RFID (radio frequency identification) module to update a commodity set in the shopping equipment; sending the set of the commodities in the shopping equipment to a background server, and generating payment information by the background server based on the received set of the commodities in the shopping equipment and returning the payment information to the shopping equipment; and after the background server confirms that the customer completes order payment, the RFID module is instructed to update the label state of the commodity in the shopping equipment to be paid.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to a payment method, a payment system and payment equipment based on RFID and weight measurement.
Background
With the technology of the internet of things, artificial intelligence and the like becoming mature day by day, unmanned stores are moved to commercial use by concepts, and in recent years, many enterprises have started to carry out unmanned operation attempts all over the country and have preliminarily accumulated some successful experiences. The difficulty of unmanned payment is how to accurately and rapidly detect all the objects to be paid, but the current commercial scheme is still more complicated in the processes of commodity detection confirmation and payment links, and although unmanned payment is realized to a certain extent, the shopping time is not obviously shortened, and the convenience is not enough. In addition, some article identification algorithms developed using more advanced techniques require a large amount of computation and are poor in real-time.
Currently, some self-service shopping devices usually have an article identification device for detecting the exact name and type of the article that the customer needs to purchase. The most common method is to place a two-dimensional code or bar code reader on the shopping device, the customer aims the two-dimensional code or bar code of the commodity to be purchased at the reader, and the reader reads and writes the name and price of the commodity on the display of the reader. Another method is to use an image recognition method based on artificial intelligence as a core algorithm of the commodity recognition device, after a customer purchases a commodity, the customer can place the commodity in front of a camera of the commodity recognition device at any angle, and after the correct commodity and price are displayed on a display screen, the recognition process can be completed.
And when the customer confirms that the commodity on the display screen is correct, clicking a confirmation button on the display screen to generate a payment two-dimensional code, and scanning the two-dimensional code by using a mobile phone and carrying out the rest conventional payment process.
The advantage of using the two-dimensional code or the bar code to identify the commodity is that the operation process is simple, the cost of equipment and the bar code is low, and the large-scale popularization is facilitated; the image recognition method based on artificial intelligence is used for commodity recognition, and has the advantages that the operation process is simple, extra consumables such as bar codes are not needed, the image recognition method is suitable for a piece counting scene, and commodities needing weight calculation cannot be accurately recognized. In addition, image recognition methods based on artificial intelligence are unable to determine whether goods are repeatedly added to a shopping cart, risking more or less payments.
In addition, the method can only serially identify the purchased commodities one by one, and serial operation is also needed to cancel a certain purchased commodity, so that the operation efficiency is low; in addition, the method cannot identify whether the payment process of the off-store commodity is finished, depends on the consciousness of the customer, and is poor in safety.
Disclosure of Invention
The invention aims to provide a payment method based on RFID and weight measurement, which takes an RFID label as a unique certificate for commodity identification, realizes parallel identification of commodities and improves the identification efficiency; moreover, the commodity set in the shopping equipment is updated through the change of the weight of the commodities in the shopping equipment, so that the full-automatic shopping and canceling processes are realized; in addition, the method provided by the invention identifies the payment state of the commodity by changing the state information of the RFID label, and ensures that the payment amount completely corresponds to the selected commodity.
In order to realize the purpose, the technical scheme is as follows:
a payment method based on RFID and weight measurement comprises a shopping stage and a payment stage;
first, choosing stage
Periodically or aperiodically measuring the weight of the items within the shopping device;
the weight value of the goods in the shopping equipment which is measured currentlyw sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, if the difference between the two is larger than a set first threshold value, the weight value of the current commodity is measuredw sensorNew Sending the information to an RFID identification module;
the RFID identification module measures the weight value of the current commodityw sensorNew Total weight of goods buffered with itw rfid Comparing, and if the difference value between the two values is greater than a set second threshold value, issuing a weight information updating instruction to the RFID tags of the commodities in the shopping equipment;
after receiving the instruction of updating the weight information, the RFID tag of the commodity in the shopping equipment transmits the information of the commodity stored in the tag to the RFID identification module, wherein the information of the commodity stored in the RFID tag comprises the ID of the tag, the name of the commodity, the price of the commodity and the weight information of the commodity;
after the RFID identification module receives the information of the commodities transmitted by the RFID tags, the weight information of the commodities transmitted by the RFID tags is summed to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is greater than the set third threshold, the RFID identification module reports an error; if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is less than or equal to a set third threshold value, the RFID identification module updates the set of the commodities in the shopping device based on the received commodity information transmitted by each RFID label;
updating the weight valuew sensorOld And the total weight of the commodities cached by the RFID identification modulew rfid ：
w
sensorOld
=w
sensorNew
w rfid =w accumNew ；
Second, payment stage
Sending the set of the commodities in the shopping equipment to a background server, and generating payment information by the background server based on the received set of the commodities in the shopping equipment and returning the payment information to the shopping equipment; and after the background server confirms that the order payment is completed, the RFID module is instructed to update the label state of the commodity in the shopping equipment to be paid.
Meanwhile, the invention also provides a payment system applying the payment method based on RFID and weight measurement, and the specific scheme is as follows:
a payment system based on RFID and weight measurement comprises a weight sensor, an RFID identification module, RFID tags of commodities, a processor and a background server;
wherein the weight sensor is adapted to measure the weight of the item within the shopping device periodically or aperiodically during the shopping session;
the processor is used for measuring the weight value of the goods in the shopping equipment at present in the shopping selection stagew sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, if the difference between the two is larger than a set first threshold value, the weight value of the current commodity is measuredw sensorNew Sending the information to an RFID identification module; and for updating the weight valuew sensorOld =w sensorNew (ii) a And for sending the collection of items within the shopping device to a backend server during a payment phase;
the RFID label of the commodity is used for transmitting the information of the commodity stored in the label to the RFID identification module after receiving the instruction of updating the weight information sent by the RFID identification module in the shopping stage, wherein the information of the commodity stored in the RFID label comprises the ID of the label, the name of the commodity, the price of the commodity and the weight information of the commodity;
the RFID identification module is used for measuring the weight value of the current goods in the shopping stagew sensorNew Total weight of goods buffered with itw rfid Comparing, and if the difference value between the two values is greater than a set second threshold value, issuing a weight information updating instruction to the RFID tags of the commodities in the shopping equipment; and after receiving the information of the commodities transmitted by the RFID tags, summing the weight information of the commodities transmitted by the RFID tags to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is greater than the set third threshold, the RFID identification module reports an error; if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is less than or equal to a set third threshold value, the RFID identification module updates the set of the commodities in the shopping device based on the received commodity information transmitted by each RFID label; and updatew rfid =w accumNew (ii) a The shopping device is used for sending the updated set of the commodities in the shopping device to the processor in the shopping stage and updating the label state of the commodities in the shopping device to be paid under the instruction of the background server in the payment stage;
the background server is used for generating payment information based on the received commodity set in the shopping device in a payment stage and returning the payment information to the shopping device; and the RFID module is used for indicating the RFID module to update the label state of the commodity in the shopping equipment to be paid after the payment stage confirms that the order payment is completed.
In addition, the invention also provides shopping equipment which is applied to the payment method based on the RFID and the weight measurement, and the shopping equipment comprises a frame body, a weight sensor arranged at the bottom of the frame body, a processor arranged on the frame body and an RFID identification module arranged on the frame body;
wherein the weight sensor is operable to periodically or aperiodically measure the weight of the item within the shopping device at the point of purchase stage under the direction of the processor;
the processor is used for measuring the weight value of the goods in the shopping equipment at present in the shopping selection stagew sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, if the difference between the two is larger than a set first threshold value, the weight value of the current commodity is measuredw sensorNew Sending the information to an RFID identification module; and for updating the weight valuew sensorOld =w sensorNew (ii) a And for sending the collection of items within the shopping device to a backend server during a payment phase;
the RFID identification module is used for measuring the weight value of the current goods in the shopping stagew sensorNew Total weight of goods buffered with itw rfid Comparing, and if the difference value between the two values is greater than a set second threshold value, issuing a weight information updating instruction to the RFID tags of the commodities in the shopping equipment; and after receiving the information of the commodities transmitted by the RFID tags, summing the weight information of the commodities transmitted by the RFID tags to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is greater than the set third threshold, the RFID identification module reports an error; if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is less than or equal to a set third threshold value, the RFID identification module updates the set of the commodities in the shopping device based on the received commodity information transmitted by each RFID label; and updatew rfid =w accumNew (ii) a The processor is used for sending the updated set of the commodities in the shopping device to the processor in the shopping stage and updating the label state of the commodities in the shopping device to be paid under the instruction of the background server in the payment stage.
Compared with the prior art, the invention has the beneficial effects that:
(1) the payment method based on the RFID and the weight measurement, provided by the invention, is used for identifying the commodities in parallel based on the RFID label identification technology, the real-time performance of commodity identification is high, the intelligent degree of the payment method can be obviously improved when the payment method is applied to an unmanned store or an unmanned supermarket, and the time consumed by the whole process from commodity purchase to payment is reduced particularly at the peak of passenger flow.
(2) The payment method based on RFID and weight measurement updates the commodity set in the shopping equipment through the change of the weight of the commodities in the shopping equipment, realizes the full-automatic shopping and canceling process, and meets the requirements of practical application scenes.
(3) According to the payment method based on the RFID and the weight measurement, the payment state of the commodity is identified through a strategy of carrying out state marking on the RFID tag, the payment of the off-store commodity is ensured to be completed, the payment amount is ensured to completely correspond to the selected commodity, and the payment safety is enhanced.
Drawings
Fig. 1 is a schematic flow diagram of a payment method based on RFID and weight measurement.
Fig. 2 is a schematic flow chart of the RFID module performing the update of the product set.
FIG. 3 is a schematic diagram of a shopping device.
FIG. 4 is a schematic diagram of the circuit configuration of the shopping device.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
the invention is further illustrated below with reference to the figures and examples.
Example 1
The payment method based on the RFID and the weight measurement is applied by matching with shopping equipment and a background server when in specific application, wherein the shopping equipment is provided with a weight sensor, a processor, a starting button, a payment button, an RFID identification module, a display module and a wireless transmission module, and the weight sensor, the starting button, the payment button, the RFID identification module, the display module and the wireless transmission module are connected with the processor; the processor and the background server are connected through the wireless transmission module.
As shown in fig. 1, when a customer uses the payment method based on RFID and weight measurement provided by the present invention to start shopping, the customer first presses a start button of a shopping device, at which time the shopping device starts to work, the shopping device enters a shopping stage, and in the shopping stage, the payment method based on RFID and weight measurement performs the following operations:
1) the processor starts a weight sensor, and the weight sensor measures the weight of the commodity in the shopping equipment at regular intervals; and transmitting the measured weight data of the items within the shopping device to the processor;
2) the processor measures the weight value of the goods in the shopping equipmentw sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, and if the difference between the two is larger than the set first thresholdσ sensor I.e. withoutw sensorNew -w sensorOld |>σ sensor It caches firstw sensorNew Suspending the measurement of new weight data and measuring the weight value of the current commodityw sensorNew Sending the information to an RFID identification module; whereinσ sensor Is a constant value, and is characterized in that,w sensorOld has an initial value of 0-w sensorNew -w sensorOld L represents (w sensorNew -w sensorOld ) Absolute value of (d);
3) the RFID identification module measures the weight value of the current commodityw sensorNew Total weight of goods buffered with itw rfid Comparing, if the difference between the two is less than or equal to the second thresholdσ rfid I.e. withoutw sensorNew -w rfid |≦σ rfid If so, the RFID identification module reports an error to the processor; otherwise, the RFID identification module starts a radio frequency function and issues a weight information updating instruction to the RFID label of the commodity in the shopping equipment; whereinσ rfid Is a constant value, and is characterized in that,w rfid is 0;
4) after the RFID label of the commodity in the shopping equipment receives the instruction of updating the weight information, the information of the commodity stored in the label is transmitted to the RFID identification module through backscatteringm label Information of the goods stored in the RFID tagm label At least including ID of the label, name of the goods, price of the goods, weight information of the goods;
as shown in fig. 2, the following steps 5) to 8) are performed for the RFID identification module to update the product set:
5) the RFID identification module takes the moment when the first RFID label receives the commodity information sent by the first RFID label as a timing starting pointt start In a statistical time periodt start , t start +T slot ]The received commodity information sent by all the RFID tags is stored,T slot taking a fixed value;
6) after the RFID identification module receives the information of all the commodities transmitted by the RFID tags, the weight information of the commodities transmitted by the RFID tags is summed to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew Is greater than a set third thresholdσ accum I.e. withoutw accumNew -w sensorNew |>σ accum If so, the RFID identification module reports an error; of all tags to be receivedm label The information is transmitted to the processor, and the processor displays the information through a display module on the shopping equipment;σ accum is a constant;
7) if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew Is less than or equal to a third threshold value, the RFID identification module updates the set of items in the shopping device based on the received item information transmitted by each RFID tag:
ream checkm label } new A collection of information of the article transmitted by the RFID tag received by the RFID identification modulem label } old The information set of the purchased commodities cached by the RFID module is obtained;
finding a great openingm label } new Andm label } old intersection of (a):
{m label } new old⋂ ={m label } new ⋂{m label } old ；
finding a set of added items:
{m label } add ={m label } new \{m label } new old⋂；{m label } new \{m label } new old⋂representing a slave collectionm label } new Chinese character dictionary with Chinese character 'shi' collectionm label } new old⋂The subsequent difference set;
finding a set of deleted items: {m label } del ={m label } old \{m label } new old⋂；
Update theCollection of items within the shopping device: {m label } old= {m label } new 。
The updatedm label } old 、{m label } add 、{m label } del Displaying through the display of the shopping equipment to prompt the current commodity collection asm label } old Prompt to increasem label } add Inner merchandise item indicating deletion of am label } del The goods inside;
the RFID identification module transmits the updated set of items within the shopping device to a processor;
8) updating the weight value retained in the processorw sensorOld =w sensorNew (ii) a Updating the total weight of the goods cached by the RFID modulew rfid =w accumNew (ii) a And closing the radio frequency function of the RFID identification module.
After the customer presses a payment button in the purchasing stage, the payment method based on the RFID and the weight measurement enters a payment stage, and the following operations are executed in the payment stage:
1) the processor of the shopping equipment sends the latest commodity set in the shopping equipment to the background server through the wireless transmission module, the background server generates a payment code based on the received commodity set in the shopping equipment and transmits the payment code to the processor of the shopping equipment through the wireless transmission module of the shopping equipment, and the processor of the shopping equipment displays the payment code through the display module;
2) a customer finishes a payment process after scanning the code through the handheld device for payment;
3) after the background server confirms that the order is paid, the wireless transmission module of the shopping equipment reminds the processor that the order is paid, and the processor starts the RFID identification module to update the label state of the commodity in the shopping equipment to be paid.
Example 2
The embodiment provides a payment system applying a payment method based on RFID and weight measurement in embodiment 1, which specifically comprises a weight sensor, an RFID identification module, a display module, a start button, a payment button, an RFID tag of a commodity, a processor, a wireless transmission module and a background server; the shopping device comprises a weight sensor, an RFID identification module, a display module, a starting button, a payment button, a processor and a wireless transmission module, wherein the weight sensor, the RFID identification module, the display module, the starting button, the payment button, the RFID identification module, the display module and the wireless transmission module are integrated in the shopping device; the processor and the background server are connected through the wireless transmission module.
When a customer starts shopping by using the system provided by the invention, a starting button of the shopping equipment is pressed firstly, the shopping equipment starts working at the moment, the shopping equipment enters a shopping selection stage, and in the shopping selection stage, the system executes the following operations:
1) the processor starts a weight sensor, and the weight sensor measures the weight of the commodity in the shopping equipment at regular intervals; and transmitting the measured weight data of the items within the shopping device to the processor;
2) the processor measures the weight value of the goods in the shopping equipmentw sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, and if the difference between the two is larger than the set first thresholdσ sensor I.e. withoutw sensorNew -w sensorOld |>σ sensor It caches firstw sensorNew Suspending the measurement of new weight data and measuring the weight value of the current commodityw sensorNew Sending the information to an RFID identification module; whereinσ sensor Is a constant value, and is characterized in that,w sensorOld has an initial value of 0-w sensorNew -w sensorOld L represents (w sensorNew -w sensorOld ) Absolute value of (2)；
3) The RFID identification module measures the weight value of the current commodityw sensorNew Total weight of goods buffered with itw rfid Comparing, if the difference between the two is less than or equal to the second thresholdσ rfid I.e. withoutw sensorNew -w rfid |≦σ rfid If so, the RFID identification module reports an error to the processor; otherwise, the RFID identification module starts a radio frequency function and issues a weight information updating instruction to the RFID label of the commodity in the shopping equipment; whereinσ rfid Is a constant value, and is characterized in that,w rfid is 0;
4) after the RFID label of the commodity in the shopping equipment receives the instruction of updating the weight information, the information of the commodity stored in the label is transmitted to the RFID identification module through backscatteringm label Information of the goods stored in the RFID tagm label At least including ID of the label, name of the goods, price of the goods, weight information of the goods;
the following steps 5) to 8) are steps of updating the commodity set for the RFID module:
5) the RFID identification module takes the moment when the first RFID label receives the commodity information sent by the first RFID label as a timing starting pointt start In a statistical time periodt start , t start +T slot ]The received commodity information sent by all the RFID tags is stored,T slot taking a fixed value;
6) after the RFID identification module receives the information of all the commodities transmitted by the RFID tags, the weight information of the commodities transmitted by the RFID tags is summed to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew Is greater than a set third thresholdσ accum I.e. withoutw accumNew -w sensorNew |>σ accum If so, the RFID identification module reports an error; of all tags to be receivedm label The information is transmitted to the processor, and the processor displays the information through a display module on the shopping equipment;σ accum is a constant;
7) if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew Is less than or equal to a third threshold value, the RFID identification module updates the set of items in the shopping device based on the received item information transmitted by each RFID tag:
ream checkm label } new A collection of information of the article transmitted by the RFID tag received by the RFID identification modulem label } old The information set of the purchased commodities cached by the RFID module is obtained;
finding a great openingm label } new Andm label } old intersection of (a):
{m label } new old⋂ ={m label } new ⋂{m label } old ；
finding a set of added items:
{m label } add ={m label } new \{m label } new old⋂；{m label } new \{m label } new old⋂representing a slave collectionm label } new Chinese character dictionary with Chinese character 'shi' collectionm label } new old⋂The subsequent difference set;
finding a set of deleted items: {m label } del ={m label } old \{m label } new old⋂；
Updating a set of items within the shopping device: {m label } old= {m label } new 。
The updatedm label } old 、{m label } add 、{m label } del Displaying through the display of the shopping equipment to prompt the current commodity collection asm label } old Prompt to increasem label } add Inner merchandise item indicating deletion of am label } del The goods inside;
the RFID identification module transmits the updated set of items within the shopping device to a processor;
8) updating the weight value retained in the processorw sensorOld =w sensorNew (ii) a Updating the total weight of the goods cached by the RFID modulew rfid =w accumNew (ii) a And closing the radio frequency function of the RFID identification module.
After the customer presses a payment button in the purchasing stage, the payment method based on the RFID and the weight measurement enters a payment stage, and the following operations are executed in the payment stage:
1) the processor of the shopping equipment sends the latest commodity set in the shopping equipment to the background server through the wireless transmission module, the background server generates a payment code based on the received commodity set in the shopping equipment and transmits the payment code to the processor of the shopping equipment through the wireless transmission module of the shopping equipment, and the processor of the shopping equipment displays the payment code through the display module;
2) a customer finishes a payment process after scanning the code through the handheld device for payment;
3) after the background server confirms that the order is paid, the wireless transmission module of the shopping equipment reminds the processor that the order is paid, and the processor starts the RFID identification module to update the label state of the commodity in the shopping equipment to be paid.
Example 3
The embodiment provides the shopping equipment used in embodiment 1 and embodiment 2, as shown in fig. 3 and 4, the shopping equipment specifically comprises a frame 1, a weight sensor 2, an RFID identification module, a display module 3, a start button, a payment button, a processor and a wireless transmission module, wherein the weight sensor 2 is arranged on four corners of the frame 1, the RFID identification module, the display module 3, the start button, the payment button, the processor and the wireless transmission module are arranged on the frame 1, the RFID identification module, the processor and the wireless transmission module are integrated in the module 4, and the weight sensor 2, the start button, the payment button, the RFID identification module, the display module 3 and the wireless transmission module are connected with the processor.
In this embodiment, the processor is an MCU, two of the four side surfaces of the frame 1, which have a larger area, are provided with antennas 5 of the RFID identification module, and the other two are provided with baffles 6; the display module 3 is a touch screen.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A payment method based on RFID and weight measurement, characterized by: comprises a shopping stage and a payment stage;
first, choosing stage
Periodically or aperiodically measuring the weight of the items within the shopping device;
the weight value of the goods in the shopping equipment which is measured currentlyw sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, if the difference between the two is larger than a set first threshold value, the weight value of the current commodity is measuredw sensorNew Sending the information to an RFID identification module;
the RFID identification module measures the weight value of the current commodityw sensorNew Total weight of goods buffered with itw rfid Comparing, and if the difference value between the two values is greater than a set second threshold value, issuing a weight information updating instruction to the RFID tags of the commodities in the shopping equipment;
after receiving the instruction of updating the weight information, the RFID tag of the commodity in the shopping equipment transmits the information of the commodity stored in the tag to the RFID identification module, wherein the information of the commodity stored in the RFID tag comprises the ID of the tag, the name of the commodity, the price of the commodity and the weight information of the commodity;
after the RFID identification module receives the information of the commodities transmitted by the RFID tags, the weight information of the commodities transmitted by the RFID tags is summed to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is greater than the set third threshold, the RFID identification module reports an error; if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is less than or equal to a set third threshold value, the RFID identification module updates the set of the commodities in the shopping device based on the received commodity information transmitted by each RFID label;
updating the weight valuew sensorOld And the total weight of the commodities cached by the RFID identification modulew rfid ：
w
sensorOld
=w
sensorNew
w rfid =w accumNew ；
Second, payment stage
Sending the set of the commodities in the shopping equipment to a background server, and generating payment information by the background server based on the received set of the commodities in the shopping equipment and returning the payment information to the shopping equipment; after the background server confirms that the order payment is completed, the background server instructs the RFID module to update the label state of the commodity in the shopping equipment to be paid;
if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is greater than the set third threshold value, the RFID identification module reports an error and displays the received commodity information transmitted by each RFID label through a display of the shopping equipment;
the RFID identification module updating the set of items in the shopping device based on the received item information transmitted by each RFID tag comprises:
the information of the goods transmitted by the RFID label ism label ，Ream checkm label } new A collection of information of the article transmitted by the RFID tag received by the RFID identification modulem label } old The information set of the purchased commodities cached by the RFID module is obtained;
finding a great openingm label } new Andm label } old intersection of (a):
{m label } new old⋂ ={m label } new ⋂{m label } old ；
finding a set of added items:
{m label } add ={m label } new \{m label } new old⋂；{m label } new \{m label } new old⋂representing a slave collectionm label } new Chinese character dictionary with Chinese character 'shi' collectionm label } new old⋂The subsequent difference set;
finding a set of deleted items: {m label } del ={m label } old \{m label } new old⋂；
Updating a set of items within the shopping device: {m label } old ={m label } new 。
2. The RFID and weight measurement based payment method of claim 1, wherein: the RFID identification module measures the weight value of the current commodityw sensorNew Total weight of current goods buffered with itw rfid And comparing, and if the difference value of the two values is less than or equal to the set second threshold value, the RFID identification module reports an error.
3. The RFID and weight measurement based payment method of claim 1, wherein: and after the RFID label of the commodity in the shopping equipment receives the instruction of updating the weight information, the information of the commodity stored in the label is transmitted to the RFID identification module through backscattering.
4. The RFID and weight measurement based payment method of claim 3, wherein: the specific process of the RFID module receiving the information of the commodities transmitted by the RFID tag is as follows:
the RFID identification module takes the moment when the first RFID label receives the commodity information sent by the first RFID label as a timing starting pointt start In a statistical time periodt start , t start +T slot ]The received commodity information sent by all the RFID tags is stored,T slot take a fixed value.
5. The RFID and weight measurement based payment method of claim 1, wherein: the updatedm label } old 、{m label } add 、{m label } del The display is displayed by the display of the shopping device.
6. The RFID and weight measurement based payment method according to any one of claims 1-5, wherein: and the background server generates payment information based on the received commodity set in the shopping equipment as a payment code.
7. A payment system based on RFID and weight measurement, applying the payment method based on RFID and weight measurement of any one of claims 1-6, characterized in that: the system comprises a weight sensor, an RFID identification module, RFID labels of commodities, a processor and a background server;
wherein the weight sensor is adapted to measure the weight of the item within the shopping device periodically or aperiodically during the shopping session;
the processor is used for measuring the weight value of the goods in the shopping equipment at present in the shopping selection stagew sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, if the difference between the two is larger than a set first threshold value, the weight value of the current commodity is measuredw sensorNew Sending the information to an RFID identification module; and for updating the weight valuew sensorOld = w sensorNew (ii) a And for sending the collection of items within the shopping device to a backend server during a payment phase;
the RFID label of the commodity is used for transmitting the information of the commodity stored in the label to the RFID identification module after receiving the instruction of updating the weight information sent by the RFID identification module in the shopping stage, wherein the information of the commodity stored in the RFID label comprises the ID of the label, the name of the commodity, the price of the commodity and the weight information of the commodity;
the RFID identification module is used for measuring the weight value of the current goods in the shopping stagew sensorNew Total weight of goods buffered with itw rfid Comparing, and if the difference value between the two values is greater than a set second threshold value, issuing a weight information updating instruction to the RFID tags of the commodities in the shopping equipment; and after receiving the information of the commodities transmitted by the RFID tags, summing the weight information of the commodities transmitted by the RFID tags to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is greater than the set third threshold, the RFID identification module reports an error; if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is less than or equal to a set third threshold value, the RFID identification module updates the set of the commodities in the shopping device based on the received commodity information transmitted by each RFID label; and updatew rfid =w accumNew (ii) a The shopping device is used for sending the updated set of the commodities in the shopping device to the processor in the shopping stage and updating the label state of the commodities in the shopping device to be paid under the instruction of the background server in the payment stage;
the background server is used for generating payment information based on the received commodity set in the shopping device in a payment stage and returning the payment information to the shopping device; and the RFID module is used for indicating the RFID module to update the label state of the commodity in the shopping equipment to be paid after the payment stage confirms that the order payment is completed.
8. A shopping device applied to the RFID and weight measurement based payment method of any one of claims 1-6, characterized in that: the RFID identification device comprises a frame body, a weight sensor arranged at the bottom of the frame body, a processor arranged on the frame body and an RFID identification module arranged on the frame body;
wherein the weight sensor is operable to periodically or aperiodically measure the weight of the item within the shopping device at the point of purchase stage under the direction of the processor;
the processor is used for measuring the weight value of the goods in the shopping equipment at present in the shopping selection stagew sensorNew The weight value of the commodity reserved from the last measurementw sensorOld Comparing, if the difference between the two is larger than a set first threshold value, the weight value of the current commodity is measuredw sensorNew Sending the information to an RFID identification module; and for updating the weight valuew sensorOld = w sensorNew (ii) a And for sending the collection of items within the shopping device to a backend server during a payment phase;
the RFID identification module is used for measuring the weight value of the current goods in the shopping stagew sensorNew Total weight of goods buffered with itw rfid Comparing, and if the difference value between the two values is greater than a set second threshold value, issuing a weight information updating instruction to the RFID tags of the commodities in the shopping equipment; and after receiving the information of the commodities transmitted by the RFID tags, summing the weight information of the commodities transmitted by the RFID tags to obtain the new total weight of the current commodityw accumNew (ii) a If the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is greater than the set third threshold, the RFID identification module reports an error; if the total weight of the current commodityw accumNew With the currently measured weight value of the goodsw sensorNew If the difference is less than or equal to a set third threshold value, the RFID identification module updates the set of the commodities in the shopping device based on the received commodity information transmitted by each RFID label; and updatew rfid =w accumNew (ii) a For use inThe shopping stage sends the updated set of the commodities in the shopping device to the processor, and the processor is used for updating the label state of the commodities in the shopping device to be paid under the instruction of the background server in the payment stage.
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| US8950671B2 (en) * | 2012-06-29 | 2015-02-10 | Toshiba Global Commerce Solutions Holdings Corporation | Item scanning in a shopping cart |
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| CN104787102B (en) * | 2015-04-28 | 2017-09-05 | 西安超嗨网络科技有限公司 | Intelligent shopping trolley, smart shopper system and its application method |
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| CN108749904A (en) * | 2018-05-24 | 2018-11-06 | 武汉天喻聚联网络有限公司 | Shopping clearing vehicle based on RFID and its application method |
| CN110782600A (en) * | 2019-10-26 | 2020-02-11 | 中北大学 | Self-service cash registering and anti-theft shopping cart system based on RFID |
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