CN107953910A - Quality proofreads self-checkout supermarket shopping car and its application process - Google Patents

Abstract

The invention discloses an automatic payment supermarket shopping cart capable of realizing self-service completion of shopping payment and ensuring that the goods taken away are consistent with the goods in the payment list and an application method thereof. The automatic payment supermarket shopping cart includes a car body and a data processor; the car body is a closed body with a storage cavity, and is provided with an electronic lock one-way retrieval door; the top of the car body is provided with an electronic lock entry door and a second A quality detection device, the bottom of the storage chamber is equipped with a second quality detection device; its application method connects the data processor to the commodity database and the charging system of the shopping mall through the network, and then scans the code of the commodity through the code scanning device, and passes the first quality The detection device and the second quality detection device verify the product, and finally realize the payment through the payment human-computer interaction interface, and open the electronic lock one-way pick-up door according to the payment certificate to realize the purchase of the product. Therefore, the adoption of the automatic payment supermarket shopping cart and its application method can avoid queuing and save shopping time.

Description

Quality proofreading self-payment supermarket shopping cart and its application method

technical field

The invention relates to the field of supermarket settlement and payment, in particular to a supermarket shopping cart for self-service payment for quality proofreading and an application method thereof.

Background technique

As we all know: in the supermarket, the sale of goods is a routine work, and the cashier is the top priority in sales. Managers at all levels of the supermarket need to keep abreast of the sales of various goods in order to make a good choice for the purchase of goods. Make a judgment and make a judgment on the operating level of the supermarket. Therefore, the supermarket cash register is a very important job. Due to the large flow of customers every day and the variety of goods, it is a very cumbersome job to rely on manual processing for cash register. At present, the supermarket cash register system has matured. In the supermarket, from supervisors, managers to cashiers The understanding is consistent, because the supermarket has a good management foundation, the economic benefits of the supermarket are good, and the ability to pay for the cost of establishing a new system, so the establishment of a new system is feasible in terms of management, technology and economy.

In addition, online payment has become routine, and most people seldom carry large amounts of cash when going out. This kind of shopping cart also satisfies the consumption habits of people in today's society.

Therefore, the prior art needs a shopping cart that can realize self-checkout and has a certain degree of automatic loss prevention function to solve the existing supermarket shopping queuing checkout problem, thereby improving the bloated supermarket staff and consumer shopping experience.

Existing implementation schemes similar to the present invention: there have been self-checkout systems with two-dimensional code scanning and networking with the host computer room on the market. The two-dimensional code sends the display module, and indicates the corresponding shopping cart through the two-dimensional code of the self-service shopping settlement shopping cart, and corresponds the self-checkout bill in the shopping cart to the shopping cart in real time, so as to achieve a certain degree of self-checkout function. However, this product also has some deficiencies. Every time the shopper finishes shopping, he needs to manually check the shopping list to check whether the product objects that the shopper checks out correspond to the product objects that exist in the shopping cart in real time, which will also cause a certain degree of queuing The problem is that shoppers’ time will be wasted, and the automatic checkout function of the automatic shopping cart will not work. If the list is not manually checked, shoppers will take more or take it by mistake, which will cause huge losses to the supermarket.

Contents of the invention

The technical problem to be solved by the present invention is to provide a quality checking self-payment supermarket shopping cart and its application method that can realize the self-service completion of shopping payment and ensure that the goods taken away are consistent with the goods in the payment list.

The technical solution adopted by the present invention to solve the technical problem is: quality proofreading self-service payment supermarket shopping cart, including a car body and a data processor, the car body is an airtight car body; a car body support frame is arranged below the car body, Rollers are arranged on the support frame of the car body; a handrail is arranged at one end of the car body;

The car body is a closed car body with a storage cavity; the top of the car body is provided with an electronic lock incoming door; the electronic lock incoming door is provided with a first quality detection device;

The car body is provided with a code scanning device and an alarm device; the code scanning device is provided with a payment human-computer interaction interface; the car body is provided with an electronic lock one-way access door; the car body is provided with printing device; the bottom of the car body cavity is provided with a second quality detection device;

The code scanning device, alarm device, first quality detection device, second quality detection device and printing device are all electrically connected to the data processor.

Further, one end of the vehicle body located at the electronic lock inlet door is provided with a commodity pushing device for pushing commodities from one end of the vehicle body to the other end.

Preferably, the product pushing device adopts a bent push lever; one end of the push lever is located in the inner cavity of the vehicle close to the inner wall of the cavity, the other end is located outside the vehicle, and the middle position of the push lever is hinged by the vehicle body.

Further, the code scanning device is arranged on one side of the electronic lock inlet door.

Further, the shared bicycle code-scanning electronic lock is provided on the roller.

Further, the bottom surface of the vehicle body storage cavity is an inclined surface, and slopes downward from one end of the vehicle body to one end of the electronic lock one-way retrieval door.

The present invention also provides a method for applying the quality proofreading self-service payment supermarket shopping cart, comprising the following steps:

1) First, connect the data processor to the commodity database and charging system of the shopping mall;

2) Pick up the car, click on the car on the payment human-computer interaction interface on the scanning device, and the data processor will clear all the data of the car;

3) During the shopping process, the product is first scanned by the code scanning device, and the code scanning device transmits the read data to the data processor to read the quality information of the product;

4) Then place the commodity on the electronic lock incoming door, measure the actual quality of the commodity through the first quality detection device on the electronic lock incoming door, and send it to the data processor;

5) After obtaining the actual quality of the commodity, the data processor compares the actual quality information of the commodity with the quality information of the commodity in the database;

A. If the error between the actual quality and the read quality is ±0.05kg, then it is judged that the product on the electronic lock’s incoming door is a code-scanned product. At this time, the data processor sends the door opening information to the electronic lock of the electronic lock’s incoming door. The cargo door is locked and opened, and the goods fall into the storage cavity of the car body; then the quality of the goods dropped into the car body cavity is detected by the second quality detection device at the bottom of the car body storage cavity, and the quality of the goods falling into the car body storage cavity is obtained. The actual quality of the commodity; compare the quality with the actual quality detected by the first quality detection device, if the quality error is within ±0.05kg, then it is judged that the commodity that fell into the storage cavity of the car body is a scanned commodity; if the error is greater than 0.05 kg or less than -0.05kg, then it is judged that the product that fell into the storage cavity of the car body is not a scanned product; the alarm device will alarm; the consumer will be reminded to put in the wrong product; at this time, the electronic lock door will be opened until the consumer takes away the wrong product. That is, the quality detected by the second quality detection device is the quality before the product falls; the alarm is released, and the information of the commodity is deleted from the data processor; and the electronic lock incoming door is closed; step 4 is performed again;

B. If the error between the actual quality and the read quality is greater than 0.05kg or less than -0.05kg, it is judged that the product on the electronic lock purchase door is not a code-scanned product; at this time, the electronic lock purchase door is closed until the corresponding product is put in. The electronic lock entry door is opened, and the goods fall into the storage cavity of the car body; then the quality of the goods dropped into the car body cavity is detected by the second quality detection device at the bottom of the car body storage cavity, and the storage space of the car body is obtained. The actual quality of the product in the cavity; compare the quality with the actual quality detected by the first quality detection device, if the quality error is within ±0.05kg, then it is judged that the product that fell into the storage cavity of the car body is a scanned product; if the error is greater than 0.05kg or less than -0.05kg, then it is judged that the product that fell into the storage cavity of the car body is not a scanned product; alarm through the alarm device; remind the consumer to put in the wrong product; at this time, the electronic lock door is opened until the consumer Take away the wrong commodity, that is, the quality detected by the second quality detection device is the quality of the product before falling into it; cancel the alarm, and delete the information of the commodity from the data processor; and close the electronic lock incoming door; Go to step 4;

6) After the purchase of the product is completed, scan the code to pay through the payment man-machine interface on the code scanning device; after the payment is completed, the data processor generates an electronic payment list and payment voucher, and then sends it to the consumer or prints a paper payment list through the printing device and proof of payment;

7) Push the quality proofreading self-service payment supermarket shopping cart to the corresponding position, and the consumer opens the electronic lock one-way retrieval door through the payment voucher, takes out the goods in the car, and completes the shopping.

The beneficial effects of the present invention are: the quality proofreading self-service payment supermarket shopping cart and its application method described in the present invention are provided with a code scanning device on the shopping cart to obtain product information by scanning the code, and at the same time, due to the installation of the upper surface of the car body with The electronic lock incoming door, and the first quality inspection device is arranged on the electronic lock incoming door, so as to realize the verification of the goods through the first quality inspection device, and then because the second quality inspection device 8 is arranged at the bottom of the car body storage cavity, Through the second quality detection device 8, the verification of the commodities dropped into the vehicle body is realized, thereby ensuring that the commodities dropped into are scanned commodities; finally, after payment is made through the payment human-computer interaction interface, the electronic lock is opened by printing the list and vouchers through the printing device and the payment voucher One-way pick-up door, take out the goods to complete the shopping.

Therefore quality proofreading self-service payment supermarket shopping cart and application method thereof of the present invention have the following advantages:

1. Improve the bloated queuing payment problem in the supermarket, reduce the expenditure cost of the supermarket, and save the shopping time of consumers;

2. When customers choose products, they can accurately identify the product details, unit price and number of pieces through the code scanning device; through the convenient and friendly visual interface of the human-computer interaction unit, the increase or decrease of products can be accurately and quickly completed; through the gravity sensing unit, the customer's purchase can be accurately confirmed It provides decision-making basis for the processing unit; quickly connects with the server through the communication unit, saving customers’ payment time, and finally provides customers with payment vouchers through the printing unit, saving time and effort.

3. It is conducive to the realization of unmanned supermarkets.

4. It can ensure that the goods taken by consumers are consistent with the goods on the payment list.

Description of drawings

Fig. 1 is the three-dimensional view of quality proofreading self-service payment supermarket shopping cart in the embodiment of the present invention;

Fig. 2 is a schematic structural view of a quality proofreading self-service payment supermarket shopping cart in an embodiment of the present invention;

Marked in the picture: 1-car body, 2-car body support frame, 3-roller, 4-handrail, 5-electronic lock incoming door, 6-code scanning device, 7-electronic lock one-way retrieval door, 8-the first Second quality inspection device, 9-commodity pushing device, 10-bottom surface of storage cavity, 11-printing device, 12-data processor, 13-first quality inspection device.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 2, the quality proofreading self-service payment supermarket shopping cart of the present invention comprises a car body 1, and the car body 1 is an airtight car body; a car body support frame 2 is arranged below the car body 1, and The car body support frame 2 is provided with a roller 3; one end of the car body 1 is provided with a handrail 4;

It is characterized in that: it also includes a data processor 12; the car body 1 is a closed car body with a storage cavity; the top of the car body is provided with an electronic lock incoming door 5; the electronic lock incoming door 5 is provided with a first Quality inspection device 13;

The car body 1 is provided with a code scanning device 6 and an alarm device; the code scanning device 6 is provided with a payment human-computer interaction interface; the car body 1 is provided with an electronic lock one-way door 7; The car body 1 is provided with a printing device 11; the bottom of the inner cavity of the car body 1 is provided with a second quality detection device 8;

The code scanning device 6 , the alarm device, the first quality detection device 13 , the second quality detection device 8 , and the printing device 11 are all electrically connected to the data processor 12 .

Specifically, the main function of the code scanning device 6 is to scan barcodes or two-dimensional codes on commodities, and the code scanning device 6 adopts a laser code scanning machine. The data processor 12 can use a variety of electronic components, such as notebook computers, electronic chips, etc. In order to reduce costs and realize multiple functions at the same time, a single-chip microcomputer is preferably used. The payment human-computer interaction interface adopts an LCD display screen, which provides a friendly and convenient human-computer operation interface, and will display information such as the total price, details, and total weight of the commodity in real time, and can increase or decrease commodities through modular operations. It is also equipped with a voice prompt unit, which can provide message delivery in various ways.

In the process of shopping by using the quality proofreading self-service payment supermarket shopping cart described in the present invention:

1. The product is first scanned by the code scanning device 6, and the code scanning device 6 transmits the read data to the data processor to read the quality information of the product;

2. Then place the commodity on the electronic lock incoming door 5, measure the actual quality of the commodity by the first quality detection device 13 on the electronic lock incoming door 5, and send it to the data processor 12;

3. After acquiring the actual quality of the commodity, the data processor 12 compares the actual quality information of the commodity with the quality information of the commodity in the database;

A. If the error between the actual quality and the read quality is ±0.05kg, then it is judged that the commodity on the electronic lock incoming door 5 is a code-scanned commodity, and at this time the data processor sends a door opening message to the electronic lock of the electronic lock incoming door 5 , the electronic lock entry door 5 is opened, and the commodities fall into the storage cavity of the vehicle body 1; then the quality of the commodities dropped into the cavity of the vehicle body 1 is detected by the second quality detection device 8 at the bottom of the storage cavity of the vehicle body 1 , to obtain the actual mass of the product that fell into the storage cavity of the car body 1; compare the quality with the actual mass detected by the first quality detection device 13, and if the mass error is within ±0.05kg, then it is judged that the product has fallen into the storage cavity of the car body 1 The product in the cavity is a scanned product; if the error is greater than 0.05kg or less than -0.05kg, then it is judged that the product that fell into the storage cavity of the car body 1 is not a scanned product; the alarm device is used to alarm; the consumer is reminded to put in the wrong product; at this time, the electronic lock The incoming door 5 is opened until the consumer takes away the wrong commodity, that is, the quality detected by the second quality detection device 8 is the quality before the product falls in; the alarm is released, and the information of the commodity is deleted from the data processor; And electronic lock incoming goods door 5 is closed; Carry out step 4 again;

B. If the error between the actual quality and the read quality is greater than 0.05kg or less than -0.05kg, it is judged that the product on the electronic lock purchase door 5 is not a code scanning product; at this time, the electronic lock purchase door 5 is closed until the corresponding product is put in , the electronic lock incoming door 5 is opened, and the commodity falls into the storage cavity of the car body 1; then the quality of the commodity dropped into the inner cavity of the car body 1 is checked by the second quality detection device 8 at the bottom of the storage cavity of the car body 1. Detect to obtain the actual quality of the product that fell into the storage cavity of the car body 1; compare the quality with the actual quality detected by the first quality detection device 8, if the quality error is within ±0.05kg, then it is judged that the product fell into the car body 1 The product in the storage cavity is a scanned product; if the error is greater than 0.05kg or less than -0.05kg, then it is judged that the product that fell into the storage cavity of the car body 1 is not a scanned product; alarm through the alarm device; remind consumers to put in the wrong product At this time, the electronic lock incoming door 5 is opened until the consumer takes away the wrong commodity, that is, the quality detected by the second quality detection device 8 is the quality before the product falls into it; Delete in the processor; And the electronic lock incoming door 5 is closed; Step 4 is carried out again;

4. After the purchase of the product is completed, scan the code to pay through the payment human-computer interaction interface on the code scanning device 6; bill of payment and proof of payment;

5. Push the quality proofreading self-service payment supermarket shopping cart to the corresponding position, and the consumer opens the electronic lock one-way retrieval door 7 through the payment voucher, and takes out the commodities in the car body 1, thereby completing the shopping.

Therefore, the quality checking self-payment supermarket shopping cart of the present invention can be applied to consumer shopping self-payment, avoiding queuing up of consumers, saving consumers' shopping time, reducing manpower input in shopping malls, and reducing operating costs.

In order to avoid the accumulation of commodities under the electronic lock inlet door 5 in the inner cavity of the car body 1, further, one end of the electronic lock inlet door 5 in the car body 1 is provided with a commodity pusher that pushes the commodities from one end of the car body 1 to the other end. device9.

The commodity pushing device 9 can adopt various methods, such as advancing a hydraulic cylinder. In order to reduce manufacturing costs and facilitate operation, preferably, the commodity pushing device 9 adopts a bent push lever; one end of the push lever is located on the vehicle body 1 The inner cavity is close to the inner wall of the inner cavity, the other end is located outside the vehicle body 1, and the middle position of the push lever is hinged by the vehicle body 1.

In order to facilitate the code scanning of commodities, further, the code scanning device 6 is arranged on one side of the electronic lock incoming door 5 .

In order to prevent the shopping cart from being used arbitrarily or being stolen, further, the roller 3 is provided with a code-scanning electronic lock for shared bicycles.

In order to facilitate the removal of goods from the electronic lock one-way retrieval door 7, further, the bottom surface 10 of the storage cavity of the vehicle body 1 is an inclined surface, and is inclined from one end of the vehicle body 1 to one end of the electronic lock one-way retrieval door 7 down.

The present invention also provides a method for applying the quality proofreading self-service payment supermarket shopping cart, comprising the following steps:

1) First, the data processor 12 is networked with the commodity database and the charging system of the shopping mall; specifically, networking can be realized through a wireless local area network; the data processor 12 adopts a single-chip microcomputer.

2) Pick up the car, click on the car on the payment human-computer interaction interface on the code scanning device 6, and the data processor will clear all the data of the car; specifically, the payment human-computer interaction interface uses an LED touch screen display.

3) During the shopping process, the product is first scanned by the code scanning device 6, and the code scanning device 6 transmits the read data to the data processor to read the quality information of the product; specifically, the code scanning device 6 uses laser code scanning machine.

4) Then the commodity is placed on the electronic lock incoming door 5, and the actual quality of the commodity is measured by the first quality detection device 13 on the electronic lock incoming door 5, and sent to the data processor 12;

5) After the data processor 12 acquires the actual quality of the commodity, it compares the actual quality information of the commodity with the quality information of the commodity in the database;

A. If the error between the actual quality and the read quality is ±0.05kg, then it is judged that the commodity on the electronic lock incoming door 5 is a code-scanned commodity, and at this time the data processor sends a door opening message to the electronic lock of the electronic lock incoming door 5 , the electronic lock entry door 5 is opened, and the commodities fall into the storage cavity of the vehicle body 1; then the quality of the commodities dropped into the cavity of the vehicle body 1 is detected by the second quality detection device 8 at the bottom of the storage cavity of the vehicle body 1 , to obtain the actual mass of the product that fell into the storage cavity of the car body 1; compare the quality with the actual mass detected by the first quality detection device 13, and if the mass error is within ±0.05kg, then it is judged that the product has fallen into the storage cavity of the car body 1 The product in the cavity is a scanned product; if the error is greater than 0.05kg or less than -0.05kg, then it is judged that the product that fell into the storage cavity of the car body 1 is not a scanned product; the alarm device is used to alarm; the consumer is reminded to put in the wrong product; at this time, the electronic lock The incoming door 5 is opened until the consumer takes away the wrong commodity, that is, the quality detected by the second quality detection device 8 is the quality before the product falls in; the alarm is released, and the information of the commodity is deleted from the data processor; And electronic lock incoming goods door 5 is closed; Carry out step 4 again;

B. If the error between the actual quality and the read quality is greater than 0.05kg or less than -0.05kg, it is judged that the product on the electronic lock purchase door 5 is not a code scanning product; at this time, the electronic lock purchase door 5 is closed until the corresponding product is put in , the electronic lock incoming door 5 is opened, and the commodity falls into the storage cavity of the car body 1; then the quality of the commodity dropped into the inner cavity of the car body 1 is checked by the second quality detection device 8 at the bottom of the storage cavity of the car body 1. Detect to obtain the actual quality of the product that fell into the storage cavity of the car body 1; compare the quality with the actual quality detected by the first quality detection device 8, if the quality error is within ±0.05kg, then it is judged that the product fell into the car body 1 The product in the storage cavity is a scanned product; if the error is greater than 0.05kg or less than -0.05kg, then it is judged that the product that fell into the storage cavity of the car body 1 is not a scanned product; alarm through the alarm device; remind consumers to put in the wrong product At this time, the electronic lock incoming door 5 is opened until the consumer takes away the wrong commodity, that is, the quality detected by the second quality detection device 8 is the quality before the product falls into it; Delete in the processor; And the electronic lock incoming door 5 is closed; Step 4 is carried out again;

6) After the purchase of the product is completed, scan the code to pay through the payment human-computer interaction interface on the code scanning device 6; Payment list and payment voucher; specific payment vouchers can be electronic QR codes, unlock passwords, etc.

7) Push the quality proofreading self-service payment supermarket shopping cart to the corresponding position, and the consumer opens the electronic lock one-way retrieval door 7 through the payment voucher, and takes out the commodities in the car body 1, thereby completing the shopping.

In summary, the quality proofreading self-service payment supermarket shopping cart and its application method described in the present invention are provided with a code scanning device on the shopping cart to obtain commodity information by scanning the code, and at the same time, because the upper surface of the car body 1 is provided with an electronic Lock the incoming cargo door 5, and the electronic lock incoming cargo door 5 is provided with a first quality detection device 13, thereby realizing the verification of the commodity by the first quality detection device, and then because the second quality detection device is arranged at the bottom of the car body storage cavity 8. Use the second quality detection device 8 to realize the verification of the commodities dropped into the vehicle body, thereby ensuring that the fallen commodities are scanned commodities; finally, after paying through the payment human-computer interaction interface, print the list and vouchers through the printing device and open them with the payment voucher One-way access door with electronic lock, take out the goods to complete the shopping.

Therefore quality proofreading self-service payment supermarket shopping cart and application method thereof of the present invention have the following advantages:

1. Improve the bloated queuing payment problem in the supermarket, reduce the expenditure cost of the supermarket, and save the shopping time of consumers;

2. When customers choose products, they can accurately identify the product details, unit price and number of pieces through the code scanning device; through the convenient and friendly visual interface of the human-computer interaction unit, the increase or decrease of products can be accurately and quickly completed; through the gravity sensing unit, the customer's purchase can be accurately confirmed It provides decision-making basis for the processing unit; quickly connects with the server through the communication unit, saving customers’ payment time, and finally provides customers with payment vouchers through the printing unit, saving time and effort.

3. It is conducive to the realization of unmanned supermarkets.

4. It can ensure that the goods taken by consumers are consistent with the goods on the payment list.

Claims (7)

1. mass proofreads self-checkout supermarket shopping car, including car body (1), the car body (1) are closed car body；The car body (1) lower section is provided with car body supporting rack (2), and roller (3) is provided with the car body supporting rack (2)；Described car body (1) one end It is provided with handrail (4)；

It is characterized in that：Further include data processor (12)；The car body (1) is the closed car body with containing cavities；The car The top of body sets electronic lock to stock up door (5)；The electronic lock stocks up and is provided with the first quality detection device (13) on door (5)；

Barcode scanning device (6) and warning device are provided with the car body (1)；Payment people is provided with the barcode scanning device (6) Machine interactive interface；Electronic lock, which is provided with, on the car body (1) unidirectionally takes thing door (7)；Printing equipment is provided with the car body (1) (11)；Car body (1) intracavity bottom is provided with the second quality detection device (8)；

The barcode scanning device (6), warning device, the first quality detection device (13), the second quality detection device (8), printing dress (11) are put to be electrically connected with data processor (12).

2. quality as claimed in claim 1 proofreads self-checkout supermarket shopping car, it is characterised in that：The interior position of the car body (1) It is provided with commodity is pushed to the commodity pusher (9) of the other end by car body (1) one end in stock up one end of door (5) of electronic lock.

3. quality as claimed in claim 2 proofreads self-checkout supermarket shopping car, it is characterised in that：The commodity pusher (9) the push lever of bending is used；Described push lever one end is located at car body (1) interior intracavitary and is adjacent to interior cavity wall, other end position In car body (1) outside, it is hinged to be equipped with car body (1) for push lever interposition.

4. quality as claimed in claim 1 proofreads self-checkout supermarket shopping car, it is characterised in that：The barcode scanning device (6) Electronic lock is arranged on to stock up the sides of door (5).

5. quality as claimed in claim 1 proofreads self-checkout supermarket shopping car, it is characterised in that：Set on the roller (3) It is equipped with shared bicycle barcode scanning electronic lock.

6. quality as claimed in claim 1 proofreads self-checkout supermarket shopping car, it is characterised in that：Car body (1) storage The bottom surface of chamber is inclined plane, and unidirectionally takes one end of thing door (7) diagonally downward from one end of car body (1) to electronic lock.

7. the application process of quality as claimed in claim 1 check and correction self-checkout supermarket shopping car, it is characterised in that including with Lower step：

1) merchandising database and toll collection system in data processor (12) and market are subjected to network connection first；

2) pick up the car, click car on the payment human-computer interaction interface on barcode scanning device (6), data processor owns the car Zeros data；

3) in shopping process, commodity carry out barcode scanning by barcode scanning device (6) first, and barcode scanning device (6) is by the data transfer of reading Data processor is led, reads the quality information of commodity；

4) and then commodity are placed on electronic lock to stock up on door (5), the first quality testing stocked up on door (5) by electronic lock fills The actual mass of (13) measurement commodity is put, and is sent to data processor (12)；

5) data processor (12) will be somebody's turn to do after the actual mass of commodity is obtained in the actual mass information and date storehouse of the commodity The quality information of commodity is compared；

If A, the error of quality of the actual mass with reading is ± 0.05kg, then judges the business that electronic lock is stocked up on door (5) Product are barcode scanning commodity, and data processor sends enabling information to the stock up electronic lock of door (5) of electronic lock at this time, and electronic lock is stocked up door (5) open, commodity are by falling in the containing cavities of car body (1)；Then examined by second mass of car body (1) containing cavities bottom Survey device (8) to be detected the quality for falling into the commodity of car body (1) inner cavity, obtain falling into the reality of car body (1) containing cavities commodity Border quality；The actual mass that the quality is detected with the first quality detection device (13) is contrasted, if quality error exists In ± 0.05kg, then judge to fall to the commodity of car body (1) containing cavities as items scanning；If error be more than 0.05kg or Less than -0.05kg, then the commodity for judging to fall into car body (1) containing cavities are not items scannings；Alarmed by warning device；Remind Consumer is put into cargo mistake；At this time electronic lock stock up door (5) opening, until consumer takes wrong commodity, i.e. the second mass away The quality that detection device (8) detects is the quality before the product is fallen into；Alarm is released, and by the information of the part commodity from number According to being deleted in processor；And by electronic lock stock up door (5) close；Re-start step 4)；

If B, actual mass is with the big 0.05kg of error of quality that reads or less than -0.05kg, judge that electronic lock is stocked up door (5) commodity on are not barcode scanning commodity；At this time electronic lock stock up door (5) closing, when being put into corresponding goods, electronic lock is stocked up Door (5) is opened, and commodity are by falling in the containing cavities of car body (1)；Then the second mass of car body (1) containing cavities bottom is passed through Detection device (8) is detected the quality for falling into the commodity of car body (1) inner cavity, obtains falling into car body (1) containing cavities commodity Actual mass；The actual mass that the quality is detected with the first quality detection device (8) is contrasted, if quality error exists In ± 0.05kg, then judge to fall to the commodity of car body (1) containing cavities as items scanning；If error be more than 0.05kg or Less than -0.05kg, then it is not items scanning to judge to fall into the commodity for so judging to fall into car body (1) containing cavities；Pass through alarm Device is alarmed；Consumer is reminded to be put into cargo mistake；At this time electronic lock stock up door (5) opening, until consumer takes wrong business away Product, the i.e. quality that the second quality detection device (8) detects are the quality before the product is fallen into；Alarm is released, and by the part The information of commodity is deleted from data processor；And by electronic lock stock up door (5) close；Re-start step 4)；

6) after the completion of commodity purchasing, barcode scanning payment is carried out by the payment human-computer interaction interface on barcode scanning device (6)；Payment is completed Data processor produces electronic payment inventory, payment voucher afterwards, then sends consumer or is printed by printing equipment (17) Papery payment inventory and payment voucher；

7) quality check and correction self-checkout supermarket shopping car passage is passed through into voucher unlocking electronic lock of paying to relevant position, consumer It is unidirectional to take thing door (7), the commodity in car body (1) are taken out, so as to complete to do shopping.