CN113554804A - Stable weight obtaining device and unmanned vending system - Google Patents
Stable weight obtaining device and unmanned vending system Download PDFInfo
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- CN113554804A CN113554804A CN202110428300.XA CN202110428300A CN113554804A CN 113554804 A CN113554804 A CN 113554804A CN 202110428300 A CN202110428300 A CN 202110428300A CN 113554804 A CN113554804 A CN 113554804A
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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
- G01G19/413—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 using electromechanical or electronic computing means
- G01G19/414—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 using electromechanical or electronic computing means using electronic computing means only
- G01G19/4144—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 using electromechanical or electronic computing means using electronic computing means only for controlling weight of goods in commercial establishments, e.g. supermarket, P.O.S. systems
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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
- G01G19/413—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 using electromechanical or electronic computing means
- G01G19/414—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 using electromechanical or electronic computing means using electronic computing means only
- G01G19/415—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 using electromechanical or electronic computing means using electronic computing means only combined with recording means
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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
- G07F11/62—Coin-freed apparatus for dispensing, or the like, discrete articles in which the articles are stored in compartments in fixed receptacles
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Abstract
The present invention provides a stable weight obtaining apparatus having such features as including: a basic weight value obtaining part, a door opening weight judging part, a same layer weight change judging part, a weight value screening part and a stable value obtaining part, wherein, the basic weight value obtaining part obtains the weight value weighed by each weighing unit before the sales counter is opened as a reference weight value, the weight value obtaining part obtains the weight value weighed by the weighing unit in real time, the opening weight judging part judges whether the goods on the corresponding pallet are taken or placed, thereby forming a pick-and-place judgment result, when the door opening weight judgment part judges that the goods on the pallet are picked and placed, and the same-layer weight change judging part judges whether the door opening weight judging process has misjudgment according to the fact that whether the picking and placing judging result of each pallet in the same layer at the same time exceeds half, and once the same-layer weight change judging part judges that the picking and placing judging result of the corresponding pallet is judged to be negative again.
Description
Technical Field
The invention relates to the technical field of sales counter weighing, in particular to a stable weight obtaining device and an unmanned vending system.
Background
Vending machines typically use image recognition systems or weighing devices to determine how much of the item has been dispensed during the vending process. The image recognition system generally recognizes the number of items on the pallet of the vending apparatus by means of images, and thus the vending apparatus employing the image recognition system is suitable only for vending standard-sized items, such as whole bottles of beverages, bagged foods, etc., and is not suitable for vending non-standard-sized items, such as fruits, etc. The weighing device calculates the mass of the articles on the pallet, so that the vending apparatus using the weighing device is suitable for vending both standard and non-standard articles.
The method for calculating the weight variation caused before and after the goods are taken and placed by the vending equipment adopting the weighing device in the prior art comprises the following steps: the difference between the weight values of the pallet and the goods on the pallet before the door is opened and the weight values of the pallet and the goods on the pallet after the door is closed is calculated.
However, after the customer opens the vending equipment, the air temperature in the vending equipment is lower than the room temperature, and the situations such as air flow and ice melting can occur, the influence of the external factors can interfere the accuracy of weighing the weight value of the commodity, and the error of weight value calculation can be accumulated when the customer takes and places the commodity for a plurality of times. It is particularly noted that within 1-3 seconds after the door of the vending apparatus is opened, the customer may shake the pallets in the vending apparatus when the door is opened, and the vending apparatus may misjudge whether the goods are taken or placed. In the prior art, the vending equipment adopting the weighing device still has obvious errors in calculating the weight variation caused before and after the goods are taken and placed.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a stable weight acquisition apparatus and an unmanned vending system.
The invention provides a stable weight obtaining device, which is arranged in an information processing module of vending equipment with a plurality of goods placing layers and has the characteristics that a plurality of pallets for containing goods to be sold and a plurality of weighing units which are in one-to-one correspondence are arranged on the goods placing layers, the plurality of weighing units are in one-to-one correspondence with the plurality of pallets and are used for weighing the weight values corresponding to the pallets in real time, and the stable weight obtaining device comprises: a basic weight value obtaining part, a door opening weight judging part, a same layer weight change judging part, a weight value screening part and a stable value obtaining part, wherein the basic weight value obtaining part obtains the weight value weighed by each weighing unit before the sales counter is opened as a reference weight value, the weight value obtaining part obtains the weight value weighed by the weighing unit in real time, the door opening weight judging part calculates the difference value between each weight value and the reference weight value in a preset time after the sales counter is opened in sequence, and judges whether goods on the corresponding pallet are taken or not according to the existence of the weight value and the difference value between all the weight values after the current weight value and the reference weight value is larger than a threshold value for taking and placing judgment, thereby forming a taking and placing judgment result, when the door opening weight judging part judges that the goods on the pallet are taken or not, the same layer weight change judging part judges whether the taking and placing judgment result of each pallet in the same layer exceeds half at the same time or not If the same-layer weight change judging part judges that the judgment process is wrong, the door opening weight judging part judges the picking and placing judgment result of the corresponding pallet again to be false, when the door opening weight judging part judges that the goods on the pallet are not picked and placed, the weight value screening part deletes the weight value with the difference value larger than the picking and placing judgment threshold value from the weight values weighed by the pallet in the preset time after the sales counter is opened, and uses the rest weight value as the weight value to be judged, and the stable value acquiring part judges the stable weight value obtained by the weighing unit when the weighing unit is in the stable state according to the weight value to be judged at each moment and the preset stability judgment threshold value.
In the stable weight obtaining apparatus provided by the present invention, there may be further provided: the same-layer weight change judging part is provided with an acquiring unit and a judging unit, when the door opening weight judging part judges that the commodities on the pallets are taken and placed, the acquiring unit acquires a taking and placing judging result of each pallet in the same layer at the same moment from the door opening weight judging part, and the judging unit judges whether the door opening weight judging process has misjudgment according to the taking and placing judging result of each pallet in the same layer at the same moment.
In the stable weight obtaining apparatus provided by the present invention, there may be further provided: when the same-layer weight change judging part judges that the same layer does not judges that the same layer.
The present invention provides a vending apparatus having the characteristics of comprising: a sales counter comprising a plurality of pallets and goods placed on the pallets; the weighing units correspond to the pallets one by one and are used for weighing the pallets and the commodities contained in the pallets so as to obtain corresponding weight values in real time; and an information processing module, each of which is in communication connection with each of the weighing cells, wherein the information processing module includes a stable weight obtaining device, a recording section, a pick-and-place determining section, a stable value determining section, and a weight change value calculating section, the stable weight obtaining device is the stable weight obtaining device of any one of claims 1 to 3, the recording section sequentially records stable weight values in a stable state, the pick-and-place determining section determines whether a difference between each of successive stable weight values is larger than a predetermined pick-and-place determining threshold value, when the presence of a continuous weight stability value is judged as yes by the pick-and-place judging section, the stability value determining section sets an earlier stability value as a first weight stability value and a later stability value as a second weight stability value, and the weight change value calculating section calculates a difference between the second weight stability value and the first weight stability value as a weight change value generated before and after the commodity on the pallet is picked and placed.
In the vending apparatus provided by the present invention, there may be further provided a feature that: wherein, when the door opening weight judging part judges that the commodity is taken and put, the stable value obtaining part takes all the weight values as the weight values to be judged, and a stable weight value obtained by the weighing unit in a stable state is judged according to the weight value to be judged at each moment and a preset threshold value for stability judgment, the information processing module is also provided with a cabinet door switch sensing part, is used for sensing the opening and closing state of the cabinet door of the sales counter, once the door opening and closing sensing part senses the closed door within the preset time after the sales counter is opened, and when the door opening weight judging part judges that the commodity is taken and put, the weight value acquiring part acquires the weight value of the vending equipment before the door is opened from the weighing unit as the weight value before the door is opened and the weight value of the vending equipment after the door is closed as the weight value after the door is closed, and the weight change value calculating part calculates the difference value between the weight value before the door is opened and the weight stable value after the door is closed as the weight change value.
In the vending apparatus provided by the present invention, there may be further provided a feature that: wherein the stable value acquiring section includes an acquisition control unit for sequentially acquiring weight values to be judged in time series, a weight set forming unit for forming a predetermined number of weight values starting from when the vending apparatus is opened into a weight set, a stability judging unit for judging whether or not a difference between a maximum value and a minimum value in the weight set is smaller than a predetermined threshold value for stability judgment until a certain weight set is judged as being stable by the stability judging unit as a one-time stability judging process, a stable weight value acquiring unit for calculating an average value of the weight sets as a stable weight value when the stability judging unit judges as being yes, a weight set forming unit for controlling the weight set forming unit to replace an oldest weight value in the weight set with a new weight value from the old weight value in the weight set, a weight value acquiring unit for acquiring a stable value, a stability judging unit for judging a predetermined number of weight values, and a stability judging unit for judging whether or not to judge a stability value And a new weight set is formed, and the acquisition control unit controls the stability judgment unit to repeat the stability judgment process.
In the vending apparatus provided by the present invention, there may be further provided a feature that: wherein differences between respective weight values in the weight set and the second weight stabilization values, respectively, are taken as a first difference set, the stabilization value determination section has a second stabilization value determination unit, a verification unit, and a determination control unit, after the second weight stabilization value is assigned, the verification unit continuously calculates for a predetermined verification time whether each difference value in the first difference value set is greater than a threshold value for stabilization judgment for the predetermined verification time, and if any difference value in the first difference value set is greater than the threshold value for stabilization judgment, the second stabilization value determination unit clears assignment of the second weight stabilization value, the determination control unit controls the second stabilization value determination unit to take the next weight stabilization value as a new second weight stabilization value, and controlling the verification unit to verify the new second weight stable value until all differences in the first difference set of the second weight stable value in the verification time are less than the threshold for stability judgment.
In the vending apparatus provided by the present invention, there may be further provided a feature that: wherein the information processing module further comprises a setting section that sets the second weight stabilization value as a candidate first weight stabilization value after the weight change value is calculated, the stabilization value determination section has a first stabilization value determination unit and a second stabilization value determination unit, the first stabilization value determination unit determines that the first weight stabilization value is not calculated, the first stable value determining unit uses the latest stable weight value as a new candidate first weight stable value until the pick-and-place determining unit determines yes, the first stable value determining unit sets the latest candidate first weight stable value as a new first weight stable value, the second stable value determining unit sets the latest stable weight value as a new second weight stable value, and the weight change value calculating unit calculates a difference between the new second weight stable value and the new first weight stable value as a new weight change value.
In the vending apparatus provided by the present invention, there may be further provided a feature that: wherein the range of the threshold value for stability judgment is 0.1-3g, the range of the threshold value for pick-and-place judgment is 15-25g, the range of the verification time is 1-3s, the range of the predetermined number is 4-6, and the range of the predetermined time is 1-3 s.
The present invention provides an automated vending system having the features comprising: at least one vending apparatus for holding goods to be vended; at least one consumer terminal for a consumer to purchase goods on a pallet; the server is respectively in communication connection with the consumption terminal and the vending equipment, the vending equipment is the vending equipment of any one of claims 4 to 9, the server comprises an information storage part and a settlement part, the information storage part at least stores the weight information and the price information of the single goods corresponding to the goods on the pallet, the settlement part is used for calculating the type and the quantity of the goods on the taken and placed pallet and the total price to be paid according to the weight change value, the weight information and the price information, when the goods on the pallet are taken out from the vending equipment, the vending equipment sends the weight change value obtained by the weighing of the weighing unit on the goods on the pallet to the server, so that the server can charge the taken goods on the pallet according to the weight change value and send the charging result to the consumption terminal.
Action and Effect of the invention
According to the stabilized weight obtaining apparatus and the unmanned vending system of the present invention, when the door opening weight judging section of the stabilized weight obtaining apparatus judges that the commodity is taken or placed within the predetermined time of the door opening, the same-layer weight change judging part of the stable weight acquiring device judges whether the door weight judging process is misjudged according to the condition that whether the taking and placing judging result of each pallet in the same layer at the same time exceeds half, and the door opening weight judging part corrects the taking and placing judging result when misjudged, therefore, the stable weight obtaining device can judge whether the weight change of a certain pallet is caused by external reasons such as door opening shaking and air flowing through the same layer, and further, misjudgment caused by external reasons is avoided, so that the accuracy of the weight change value calculation of the stable weight obtaining device in the door opening preset time is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a drone vending system of the present invention;
FIG. 2 is a schematic view of a vending apparatus in an embodiment of the present invention;
FIG. 3 is a schematic view of a vending apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an information processing module in an embodiment of the invention;
FIG. 5 is a schematic view of a stable weight obtaining apparatus in an embodiment of the present invention;
FIG. 6 is a diagram showing the contents stored in the information storage unit according to the embodiment of the present invention;
FIG. 7 is a flow chart illustrating the operation of the automated vending system weighing process in an embodiment of the present invention;
FIG. 8 is a flow chart illustrating operation of the unmanned vending system after a predetermined amount of time in accordance with an embodiment of the present invention; and
FIG. 9 is a flow chart of the vending operations performed by the automated vending system according to an embodiment of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement objects and effects of the invention easy to understand, the following embodiments are provided to specifically describe an automatic vending system and an automatic vending system of the invention with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a vending system in an embodiment of the present invention.
As shown in fig. 1, the present embodiment provides an unmanned vending system 100 including a plurality of vending apparatuses 10, a plurality of consumer terminals 20, and a server 30.
Fig. 2 is a schematic view of a vending apparatus according to an embodiment of the present invention, and fig. 3 is a schematic view of a configuration of the vending apparatus according to an embodiment of the present invention.
As shown in fig. 2 and 3, the vending apparatus 10 includes a vending cabinet 11 having a plurality of cargo levels, a plurality of weighing units 12, an information processing module 13, a communication unit 14, and a control device 15 controlling the above-mentioned components.
The sales counter 11 includes a cabinet 111, a plurality of pallets 112, and a locking portion 113.
The cabinet 111 is provided with an identification code, and the consumer can scan the identification code through the consumption terminal 20 to obtain the container identification information of the sales container 11.
The cabinet 111 has a cabinet door. A plurality of pallets 112 are each located within cabinet 111 and secured to cabinet 111. In this embodiment, the space within cabinet 111 is divided into 3 levels, each level being provided with 4 pallets 112. The pallet 112 is used to hold goods to be vended. The individual pallets 112 contain only the same commodity, and the term "the same commodity" means a commodity having the same commodity name, the same commodity specification, and the same manufacturer. Different pallets 112 may hold the same goods or different goods.
A plurality of pallets 112 are respectively disposed on the plurality of cargo levels.
The locking portion 113 includes an electronic lock (not shown) provided on an edge of the cabinet door and a locker (not shown) provided on the door frame. The electronic lock can lock and unlock the cabinet door according to the control signal of the control device 13 under the matching of the lock catch.
The weighing units 12 are arranged in the sales counter 11, correspond to the pallets 112 one by one, and are used for weighing the pallets 112 and the goods stored in the pallets 112 so as to obtain corresponding weight values in real time.
Fig. 4 is a schematic diagram of an information processing module in an embodiment of the invention.
As shown in fig. 4, the information processing module 13 is connected in communication with each weighing cell 12. The information processing module 13 includes a stable weight acquiring device 131, a recording unit 132, a pick-and-place determining unit 133, a stable value determining unit 134, a weight change value calculating unit 135, a setting unit 136, a cabinet door opening/closing sensing unit 137, and a control unit 138 for controlling the above units.
Fig. 5 is a schematic view of a stable weight obtaining apparatus in an embodiment of the present invention.
As shown in fig. 5, the stable weight acquiring device 131 includes a basic weight value acquiring unit 141, a weight value acquiring unit 142, a door opening weight determining unit 143, a layer weight change determining unit 144, a weight value screening unit 145, and a stable value acquiring unit 146.
The basic weight value obtaining section 141 obtains the weight value weighed by the weighing unit 12 before the sales counter 11 is opened as the reference weight value.
The weight value obtaining section 142 obtains the weight value weighed by the weighing unit 12 in real time.
The door opening weight determining part 143 sequentially calculates the difference between each weight value and the reference weight value within a predetermined time after the sales counter 11 is opened, and determines whether the goods are taken or not according to whether the weight value exists and whether the difference between all the weight values after the current weight value and the reference weight value is greater than the threshold for taking or placing determination.
The predetermined time is in the range of 1-3 s. The predetermined time is 2s in this embodiment.
When the door-opening weight judging section 143 judges that the goods on the pallet are picked up and placed, the same-layer weight change judging section 144 judges whether there is a misjudgment in the door-opening weight judging process based on the fact that whether the picking and placing judgment result of each pallet in the same layer at the same time is more than half, and once the same-layer weight change judging section 144 judges yes, the door-opening weight judging section 143 judges the picking and placing judgment result of the corresponding pallet again as no.
When the door opening weight determining section 143 determines that the commodity is taken or placed, the stable value acquiring section 146 determines all the weight values as weight values to be determined, and determines a stable weight value obtained by the weighing unit 12 in a stable state according to the weight values to be determined at each time and a predetermined threshold value for stability determination.
The cabinet door opening/closing sensing unit 137 senses the opening/closing state of the cabinet door of the sales counter 11. Once the door switch sensing part 137 senses that the door is closed within a predetermined time after the sales counter 11 is opened, and the door opening weight determining part 143 determines that the goods are taken and placed, the weight value obtaining part 146 obtains the weight value of the vending apparatus 10 before the door is opened from the weighing unit as the weight value before the door is opened and the weight value of the vending apparatus 10 after the door is closed as the weight value after the door is closed, and the weight change value calculating part 135 calculates the difference between the weight value before the door is opened and the weight stable value after the door is closed as the weight change value generated before and after the goods are taken and placed.
When the door-opening weight determination unit 143 determines that the commodity is not taken or placed, the weight value screening unit 145 deletes the weight value having a difference larger than the threshold value for taking or placing determination from the weight values weighed within a predetermined time after the sales counter 11 is opened, and sets the remaining weight value as the weight value to be determined.
The stable value obtaining section 146 determines a stable weight value obtained by the weighing unit 12 in a stable state based on the weight value to be determined at each time and a predetermined threshold value for stability determination.
The stable value acquisition section 146 includes an acquisition control unit 201, a weight value acquisition unit 202, a weight set formation unit 203, a stability determination unit 204, and a stable weight value acquisition unit 205.
The weight value obtaining unit 202 is configured to obtain the weight values to be determined in sequence according to time.
The weight set forming unit 203 forms a weight set with a predetermined number of weight values starting when the vending apparatus 10 opens the door.
The predetermined number ranges from 4 to 6. The predetermined number in this embodiment is 5.
The acquisition control unit 201 controls the stability determination unit 204 to calculate the difference between the maximum value and the minimum value in a weight set each time the weight set is formed and determine whether the difference is smaller than a predetermined threshold for stability determination until a certain weight set is determined to be a stability determination process by the stability determination unit 204.
When the steady determination unit 204 determines yes, the steady weight value acquisition unit 205 calculates an average value of the weight sets as the steady weight value. Subsequently, the acquisition control unit 201 controls the weight set forming unit 203 to replace the oldest weight value in the weight set with the weight value at the next time to form a new weight set, and the acquisition control unit 201 controls the stability determining unit 204 to repeat the stability determining process.
The recording section 132 sequentially records the steady weight values in the steady state.
The value range of the threshold value for stability judgment is 0.1-3 g. The threshold value for stability determination in this example was 0.1 g. In the present embodiment, assuming that the difference value between the maximum value and the minimum value in the weight set is less than 0.1g, the stable weight value acquisition unit 305 calculates the average value of the weight set as the stable weight value; when the difference between the maximum value and the minimum value in the weight set is greater than 0.1g, the weight set forming unit 303 forms a new weight set, and determines again whether the difference between the maximum value and the minimum value in the weight set is less than 0.1 g.
The pick-and-place determining section 133 determines whether or not the difference between the respective successive steady weight values is larger than a predetermined pick-and-place determining threshold value.
When the presence of a continuous weight stability value is determined as yes by the pick-and-place determination unit 133, the stability value determination unit 134 sets the earlier stability value as the first weight stability value and the later stability value as the second weight stability value.
The value range of the threshold value for taking and placing judgment is 15-25 g. The threshold for taking and placing determination in this embodiment is 20 g. In the present embodiment, assuming that the difference between the latest two weight stabilization values is greater than 20g, the fixed value determination section 204 takes the earlier stabilization value as the first weight stabilization value and the later stabilization weight value as the second weight stabilization value; if the difference between the two latest weight stable values is less than 20g, the stable weight value obtaining unit 305 obtains a new stable weight value, and then determines whether the difference between the two latest weight stable values is greater than 20g again.
The difference between each weight value in the set of weights and the second weight stabilization value, respectively, is taken as a first set of differences.
The stable value determination section 134 has a first stable value determination unit 301, a second stable value determination unit 302, a verification unit 303, and a determination control unit 304.
After the second weight stabilization value is assigned, the verification unit 303 continuously calculates whether each difference value in the first difference value set in the predetermined verification time is greater than the threshold value for stabilization judgment for the predetermined verification time.
If any difference value in the first difference value set is greater than the threshold value for stability determination, the second stable value determination unit 302 removes the assignment to the second weight stable value.
The determination control unit 304 controls the second stable value determination unit 302 to take the next weight stable value as a new second weight stable value, and controls the verification unit 303 to verify the new second weight stable value until all differences in the first difference set are smaller than the threshold for stability determination within the verification time for the second weight stable value.
The verification time ranges from 1 s to 3 s. The verification time in this example is 2 s.
The weight change value calculation portion 135 calculates a difference between the second weight stabilization value and the first weight stabilization value as a weight change value.
When the weight change value is calculated, the setting unit 136 sets the second weight stabilization value as the candidate first weight stabilization value.
When the first stable value determining unit 301 determines yes by the stability determining unit 204, the first stable value determining unit 301 takes the latest stable weight value as a new candidate first weight stable value.
Until the pick-and-place determination section determines yes, the first stable value determination unit 301 sets the latest candidate first weight stable value as a new first weight stable value, and the second stable value determination unit 302 sets the latest stable weight value as a new second weight stable value.
The weight change value calculation portion 135 calculates a difference between the new second weight stabilization value and the new first weight stabilization value as a new weight change value.
The consumer terminal 20 is a mobile terminal, for example, a smartphone, and includes a scan recognition unit 21, an input display unit 22, a consumer-side communication unit 23, and a consumer-side control unit 24 for controlling the above units.
The scanning and identifying unit 21 is used for the consumer to scan the identification code and obtain the container identification information of the corresponding sales container 11 from the identification code. In this embodiment, the container identification information is an identification number of the sales container 11, and is used for the server 30 to identify the sales container 11 currently operated by the consumer. Upon recognizing the container identification information, the consumption-side communication section 23 transmits it to the server 30.
The input display unit 22 is used to display the type and quantity of the product purchased by the consumer and the total price to be paid. The consumer can input an instruction to unlock the sales counter 11 through the input display section 22.
The server 30 is communicatively connected with the consumer terminal 20 and the vending apparatus 10, respectively. The server 30 includes an information storage unit 31, a settlement unit 32, a service-side communication unit 33, and a service-side control unit 34 for controlling the above units.
Fig. 6 shows contents stored in the information storage unit in the embodiment of the present invention.
As shown in fig. 6, the information storage unit 31 stores unit identification information, commodity identification information, and commodity price information, which correspond one-to-one to the plurality of pallets 112.
Specifically, the product identification information includes identification information of standard products and identification information of non-standard products, the "standard products" are products sold with uniform weight packages, and the "non-standard products" are bulk products sold. Specifically, standardized commodities and non-standardized commodities are respectively numbered, wherein the standardized commodity is numbered GGi (i ═ 1, 2..) and the non-standardized commodity is numbered FGGi (i ═ 1, 2.); the unit price information of the commodity is the price per gram of the commodity, and the unit is Yuan/gram.
Specifically, the unit identification information is the number HPi (i ═ 1, 2.., n) of the pallet 112, n is the number of the weighing units 121, and in the present embodiment, n is 12. The product identification information corresponding to different unit identification information may be the same or different. If the commodity identification information corresponding to different unit identification information is the same, it indicates that different pallets 112 contain the same commodity; if the article identification information corresponding to different unit identification information is different, it indicates that different pallets 112 respectively contain different articles.
The settlement unit 32 identifies the type of the picked-up and placed commodity and the shelf on which the picked-up and placed commodity is placed based on the unit identification information and the corresponding commodity identification information, calculates the number of the picked-up and placed commodities based on the weight change value, and finally calculates the total price to be paid by combining the commodity unit price information.
When the goods on the pallet 112 are taken out from the sales counter 11, the sales counter 11 transmits a weight change value obtained by the weighing device 12 weighing the goods on the pallet 112 to the server 30, so that the server 30 can charge the taken out goods on the pallet 112 according to the weight change value and transmit the charging result to the consumption terminal 20 through the server-side communication section 33.
FIG. 7 is a flow chart illustrating operation of the vending system during a predetermined time period in accordance with an embodiment of the present invention.
As shown in FIG. 7, the operation flow of the vending apparatus 10 for a predetermined time after the vending cabinet 11 is opened includes the steps of:
step S-A-1, the basic weight value obtaining part 141 obtains the weight value weighed by the weighing unit 12 before the sales counter 11 is opened as the reference weight value, and then proceeds to step S-A-2;
step S-A-2, the weight value obtaining part 142 obtains the weight value weighed by the weighing unit 12 in real time, and then the step S-A-3 is carried out;
step S-A-3, the door opening weight judging part 143 calculates the difference between each weight value and the reference weight value within A predetermined time after the sales counter 11 is opened in sequence, and judges whether the commodity is taken or not according to whether the weight value exists or not and whether the difference between all the weight values after the current weight value and the reference weight value is greater than A threshold value for taking and placing judgment, if so, the step S-A-4 is performed, otherwise, the step S-A-5 is performed;
step S-A-4, the same-layer weight change judging part 144 judges whether the door opening weight judging process has misjudgment according to the fact that whether the taking and placing judging result of each pallet in the same layer at the same time exceeds half, if so, the step S-A-6 is carried out, and if not, the step S-A-5 is carried out;
step S-A-5, the weight value screening part 145 deletes the weight value of which the difference value is larger than the threshold value for taking and placing judgment from the weight values weighed in the predetermined time after the sales counter 11 opens the door and takes the remaining weight value as the weight value to be judged, and then the step S-B-1 is performed;
in step S-A-6, the stable value acquisition section 146 takes all the weight values as the weight values to be judged, and then proceeds to step S-B-1.
In particular, when the door switch sensing part 137 senses that the door is closed within a predetermined time after the sales counter 11 is opened and the door opening weight determining part 143 determines that the goods are taken and placed, the weight value acquiring part 142 acquires the weight value of the vending apparatus 10 before the door is opened as the weight value before the door is opened and the weight value of the vending apparatus 10 after the door is closed as the weight value after the door is closed from the weighing unit, and the weight change value calculating part 135 calculates the difference between the weight value before the door is opened and the weight stable value after the door is closed as the weight change value generated before and after the goods are taken and placed.
FIG. 8 is a flow chart illustrating operation of the vending system after a predetermined amount of time in accordance with an embodiment of the present invention.
As shown in fig. 8, the operation flow of the vending system 100 after a predetermined time includes the following steps:
step S-B-1, the weight value obtaining unit 202 sequentially obtains the weight values to be judged according to the time, and then the step S-B-2 is carried out;
step S-B-2, the weight set forming unit 203 forms a predetermined number of weight values to be judged from when the vending apparatus opens the door into a weight set, and then forms a new weight set in such a manner that the weight value at the next moment replaces the oldest one, and then proceeds to step S-B-3;
step S-B-3, the stability determination unit 204 calculates a difference between the maximum value and the minimum value in the weight set and determines whether the difference is smaller than a predetermined threshold value for stability determination, if the determination result is yes, the process proceeds to step S-B-4, and if the determination result is not yes, the process proceeds to step S-B-2;
step S-B-4, the stable weight value obtaining unit 205 calculates an average value of the weight sets as a stable weight value, and then proceeds to step S-B-5;
step S-B-5, the recording portion 136 records the stable weight value, and then proceeds to step S-B-6;
step S-B-6, the pick-and-place judging section 137 judges whether the difference between the two latest stable weight values is larger than a predetermined pick-and-place judgment threshold value, if the judgment result is yes, the process proceeds to step S-B-7, and if the judgment result is not yes, the process proceeds to step S-B-4;
step S-B-7, the stable value determination portion 138 takes the earlier stable value as the first weight stable value and the later stable weight value as the second weight stable value, and then proceeds to step S-B-8;
step S-B-8, the weight value obtaining unit 202 obtains the weight value weighed by the weighing unit 121 within a predetermined verification time after the second weight stable value is formed, and then the process goes to step S-B-9;
step S-B-9, the verification unit 303 continuously calculates whether each difference in the first difference set in the predetermined verification time is smaller than the threshold for stability determination within the predetermined verification time, if the result of the determination is yes, then step S-B-10 is performed, and if the result of the determination is not yes, then step S-B-8 is performed;
step S-B-10, the weight variation value calculation section 135 calculates the difference between the second weight stabilization value and the first weight stabilization value as a weight variation value generated before and after the commodity is picked up and placed, and then proceeds to step S-B-11;
in step S-B-11, the setting unit 136 sets the second weight stabilization value as the candidate first weight stabilization value.
After step S-B-11, when the first stable value determining unit 301 determines yes by the stability determining unit 204, the first stable value determining unit 301 takes the latest stable weight value as a new candidate first weight stable value. Until the pick-and-place determination section determines yes, the first stable value determination section 301 sets the latest candidate first weight stable value as a new first weight stable value, and the second stable value determination section 302 sets the latest stable weight value as a new second weight stable value. The weight change value calculation portion 135 calculates a difference between the new second weight stabilization value and the new first weight stabilization value as a new weight change value. The setting unit 136 then sets the second weight stability value again as the candidate first weight stability value, and repeats the above-described weighing process until the sales counter 11 is closed.
Fig. 9 is a flow chart of the vending operation performed by the vending system according to the present embodiment.
As shown in fig. 9, when a consumer needs to purchase some goods from the unmanned vending system 100, the flow of actions of the unmanned vending system 100 to perform vending includes:
step S-C-1, the consumer scans the identification code on the sales counter 11 through the consumption terminal 20, inputs an instruction for unlocking the sales counter 11, sends the instruction to the sales counter 11 through the server 30, and then enters step S-C-2;
step S-C-2, the control device 13 controls the locking part 113 to unlock the cabinet door of the cabinet body 111, so that the consumer opens the cabinet door and takes and places the goods in the sales counter 11, and then the step S-C-3 is carried out;
step S-C-3, the weighing unit 12 calculates the weight change value caused by goods taking and placing in real time through the steps S-A-1 to S-A-5 and the steps S-B-1 to S-B-13 when the consumers take and place the goods until the consumers close the cabinet door, and then the step S-C-4 is carried out;
step S-C-4, the control device 13 controls the settlement part 32 to calculate the type and quantity of the purchased goods and the total price to be paid according to the weight change value, the unit identification information, the goods identification information and the goods unit price information, and then the process goes to step S-C-5;
in step S-C-5, the control device 13 controls the input display unit 22 to display the type and quantity of the purchased products and the total price to be paid, and allows the consumer to pay the fee according to the total price.
Effects and effects of the embodiments
According to the stabilized weight obtaining apparatus and the unmanned vending system of the present embodiment, when the door opening weight determining portion of the stabilized weight obtaining apparatus determines that the commodity is taken or placed within the predetermined time period of the door opening, the same-layer weight change judging part of the stable weight acquiring device judges whether the door opening weight judging process has misjudgment according to the condition that whether the taking and placing judging result of each pallet in the same layer at the same time exceeds half, and the door opening weight judging part corrects the taking and placing judging result when the misjudgment is carried out, therefore, the stable weight obtaining device can judge whether the weight change of a certain pallet is caused by external reasons such as door opening shake, air flow and the like through the change of the same layer, and further, the misjudgment caused by external reasons is avoided, so that the accuracy of the stable weight obtaining device in calculating the weight change value within the preset time of opening the door is improved.
Furthermore, the weight value of the commodity on the pallet is continuously acquired by the stable weight acquisition device in real time within the preset time for opening the door and is compared with the weight value before opening the door, so that whether the commodity is taken or not within the preset time is judged, and when the judgment result is yes and the vending equipment is closed within the preset time for opening the door, the difference value between the weight value before opening the door and the weight value after closing the door is taken as the vending change value caused by the commodity taking or placing by the stable weight acquisition device, so that the interference of the quick air flow to the weighing of the weight value within the preset time for opening the door of the vending equipment is reduced, and the accuracy and the stability of the calculation of the weight change value by the stable weight acquisition device within the preset time for opening the door are ensured.
Furthermore, the stable weight obtaining device judges whether the difference value between the weight value of the commodity collected in the door opening scheduled time and the weight value before the door opening is continuously smaller than the threshold value for taking and placing judgment at a certain moment so as to judge whether the commodity is taken and placed in the scheduled time, and when the judgment result is negative, the stable weight obtaining device deletes the weight value larger than the threshold value for taking and placing judgment, so that the accuracy of the stable weight obtaining device in calculating the weight change value is improved.
Further, the vending equipment of the unmanned vending system continuously collects the weight values of the commodities on the pallet in real time and judges the stable values by forming a weight set, so that a plurality of weight stable values are obtained, whether the commodities are taken or not is judged according to the difference value between the weight stable values, the weight change value caused by the commodities is calculated, and the accuracy and the stability of the calculation of the weight change value by the vending equipment are ensured.
Further, the vending equipment of the unmanned vending system takes the weight values of a preset number of latest commodities as a current weight set, and judges whether the difference value between the maximum value and the minimum value in the current weight set is smaller than a threshold value for stability judgment, so that a weight stability value is determined, and the accuracy and stability of calculation of the weight change value by the vending equipment are improved.
Furthermore, after the vending equipment of the unmanned vending system judges that the commodities are taken and placed, the weight stability value of the commodities after being taken and placed is verified through the verification unit, and the weight stability value meeting the verification condition is used as the final second weight stability value to be substituted into the weight change value for calculation.
Further, since the vending equipment of the unmanned vending system restarts the calculation of the weight change value caused by the next commodity taking and placing after completing the calculation of the weight change value caused by the commodity taking and placing once, the present embodiment can record the weight change value caused by the commodity taking and placing once after opening the door.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
In the above embodiments, the vending apparatus in the unmanned vending system is provided in plural and the consumption terminal is provided in plural. In another embodiment of the present invention, the number of the vending apparatuses and the number of the consumption terminals may be adjusted according to actual situations, for example, only one vending apparatus and one consumption terminal may be provided in the unmanned vending system.
Claims (10)
1. The utility model provides a stable weight acquisition device, sets up in the information processing module of the vending equipment that has a plurality of layers of putting goods, its characterized in that, it is provided with a plurality of pallets and a plurality of weighing unit of one-to-one that hold the commodity of waiting to sell on the layer of putting goods, a plurality of weighing unit and a plurality of the pallet one-to-one for call in real time the weight value that the pallet corresponds, stable weight acquisition device includes:
a basic weight value obtaining part, a door opening weight judging part, a same layer weight change judging part, a weight value screening part and a stable value obtaining part,
wherein the basic weight value acquiring section acquires the weight value weighed by each of the weighing units before the sales counter is opened as a reference weight value,
the weight value obtaining part obtains the weight value weighed by the weighing unit in real time,
the door opening weight judging part sequentially calculates the difference between each weight value and the reference weight value within a predetermined time after the sales counter is opened, and judges whether the commodity on the corresponding pallet is taken or not according to whether the weight value exists or not and whether the difference between all the weight values after the current weight value and the reference weight value is larger than the taking and placing judging threshold value so as to form a taking and placing judging result,
when the door opening weight judging part judges that the commodities on the pallets are picked and placed, the same-layer weight change judging part judges whether the door opening weight judging process has misjudgment or not according to the condition that whether the picking and placing judging result of each pallet in the same layer at the same time exceeds half,
once the same-layer weight change judging unit judges that the pallet is taken in or taken out, the door opening weight judging unit judges that the pallet is taken in or taken out again,
when the door-opening weight judging section judges that the commodity on the pallet is not taken or placed, the weight value screening section deletes the weight value having the difference larger than the threshold value for taking or placing judgment from the weight values weighed by the pallet within the predetermined time after the sales counter is opened and sets the remaining weight value as a weight value to be judged,
the stable value obtaining part judges to obtain a stable weight value obtained by the weighing unit when the weighing unit is in a stable state according to the weight value to be judged at each moment and a preset threshold value for stability judgment.
2. A stable weight obtaining device according to claim 1, wherein:
wherein the same layer weight change judging section has an acquiring unit and a judging unit,
when the door opening weight judging section judges that the commodity on the pallet is picked up and placed,
the acquisition unit acquires the pick-and-place determination result of each pallet in the same layer at the same time from the door opening weight determination section,
the judging unit judges whether the door opening weight judging process has misjudgment according to the taking and placing judging result of each pallet in the same layer at the same time.
3. A stable weight obtaining device according to claim 1, wherein:
when the same-layer weight change judging part judges that the weight change of the same layer judges that the same layer does not judges that the same layer.
4. A vending apparatus, comprising:
a sales counter comprising a plurality of pallets and goods placed on the pallets;
the weighing units correspond to the pallets one by one and are used for weighing the pallets and the commodities contained in the pallets so as to obtain corresponding weight values in real time; and
an information processing module which is respectively in communication connection with each weighing unit,
wherein the information processing module comprises a stable weight acquiring device, a recording part, a taking and placing judging part, a stable value determining part and a weight change value calculating part,
the steady weight obtaining apparatus as recited in any one of claims 1 to 3,
the recording part sequentially records the stable weight value in a stable state,
the pick-and-place judging section judges whether or not a difference between respective successive stable weight values is larger than a predetermined pick-and-place judging threshold value,
when the presence of a continuous weight stability value is judged as yes by the pick-and-place judging section, the stability value determining section sets an earlier stability value as a first weight stability value and a later stability value as a second weight stability value,
the weight change value calculation unit calculates a difference between the second weight stabilization value and the first weight stabilization value as a weight change value occurring before and after the commodity on the pallet is picked up and placed.
5. A vending apparatus as claimed in claim 4, wherein:
wherein when the door opening weight judging section judges that the commodity is taken and placed, the stable value acquiring section takes all the weight values as the weight values to be judged, and judges a stable weight value obtained by the weighing unit in a stable state according to the weight values to be judged at each moment and a predetermined threshold value for stable judgment,
the information processing module is also provided with a cabinet door opening and closing sensing part which is used for sensing the opening and closing state of the cabinet door of the sales counter,
once the cabinet door switch sensing part is in after the sales counter is opened the door is sensed in the predetermined time and is closed, and the door opening weight judging part judges that when the commodity is taken and put, the weight value obtaining part obtains the weight value before the vending equipment opens the door as the weight value before the door opens and the weight value after the vending equipment closes the door as the weight value after the door closes, and the weight change value calculating part calculates the difference value between the weight value before the door opens and the weight stability value after the door closes as the weight change value.
6. A vending apparatus as claimed in claim 4, wherein:
wherein the stable value acquisition part comprises an acquisition control unit, a weight value acquisition unit, a weight set forming unit, a stability judgment unit and a stable weight value acquisition unit,
the weight value obtaining unit is used for obtaining the weight values to be judged in sequence according to the time,
the weight set forming unit forms a predetermined number of weight values into a weight set from when the vending apparatus opens the door,
the acquisition control unit controls the stability judging unit to calculate a difference between a maximum value and a minimum value in the weight set every time the weight set is formed and judge whether the difference is smaller than a predetermined threshold value for stability judgment until a certain weight set is judged to be a stability judgment process by the stability judging unit,
when the stability determination unit determines yes, the stable weight value acquisition unit calculates an average value of the weight sets as the stable weight value, then the acquisition control unit controls the weight set formation unit to replace the oldest weight value in the weight sets with a new weight value to form a new weight set, and the acquisition control unit controls the stability determination unit to repeat the stability determination process.
7. A vending apparatus as claimed in claim 6, wherein:
wherein differences between the respective weight values in the weight set and the second weight-stable values are taken as a first set of differences,
the stable value determination section has a second stable value determination unit, a verification unit, and a determination control unit,
the verification unit continuously calculates whether each difference value in the first difference value set in a predetermined verification time is larger than the threshold value for stability determination for a predetermined verification time after the second weight stabilization value is assigned,
if any difference value in the first difference value set is larger than the threshold value for stability determination, the second stable value determination unit eliminates the assignment of the second weight stable value,
the determination control unit controls the second stable value determination unit to take the next weight stable value as a new second weight stable value, and controls the verification unit to verify the new second weight stable value until all differences in the first difference set are smaller than the threshold for stability determination within the verification time for the second weight stable value.
8. A vending apparatus as claimed in claim 6, wherein:
wherein the information processing module further comprises a setting part,
the setting section sets the second weight stabilization value as a candidate first weight stabilization value when the weight change value is calculated,
the stable value determination section has a first stable value determination unit and a second stable value determination unit,
the first stable value determining unit, when the stability judging unit judges yes, takes the latest stable weight value as the new candidate first weight stable value,
the first stable value determining unit may set the latest candidate first weight stable value as the new first weight stable value, and the second stable value determining unit may set the latest stable weight value as the new second weight stable value, until the taking and placing determination unit determines yes,
the weight change value calculation section calculates a difference between the new second weight stabilization value and the new first weight stabilization value as the new weight change value.
9. A vending apparatus as claimed in claim 8, wherein:
the range of the threshold value for stability judgment is 0.1-3g, the range of the threshold value for taking and placing judgment is 15-25g, the range of the verification time is 1-3s, the range of the preset number is 4-6, and the range of the preset time is 1-3 s.
10. An automated vending system, comprising:
at least one vending apparatus for holding goods to be vended;
at least one consumer terminal for a consumer to purchase goods on the pallet;
a server in communication connection with the consumption terminal and the vending apparatus, respectively,
the vending apparatus as claimed in any one of claims 4 to 9,
the server includes an information storage section and a settlement section,
the information storage unit stores at least individual weight information and price information of the corresponding commodity on the pallet,
the settlement unit is configured to calculate the type and quantity of the commodity on the pallet to be picked up and placed and the total price to be paid out based on the weight change value, the individual weight information, and the price information,
when the goods on the pallet are taken out from the vending apparatus, the vending apparatus transmits the weight change value obtained by the weighing unit weighing the goods on the pallet to the server, so that the server can bill the taken-out goods on the pallet according to the weight change value and transmit the billing result to the consumer terminal.
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