CN109556695B - Weighing method, weighing device, unmanned sales counter and unmanned sales method - Google Patents
Weighing method, weighing device, unmanned sales counter and unmanned sales method Download PDFInfo
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- CN109556695B CN109556695B CN201811446722.4A CN201811446722A CN109556695B CN 109556695 B CN109556695 B CN 109556695B CN 201811446722 A CN201811446722 A CN 201811446722A CN 109556695 B CN109556695 B CN 109556695B
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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
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F9/00—Details other than those peculiar to special kinds or types of apparatus
- G07F9/10—Casings or parts thereof, e.g. with means for heating or cooling
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0036—Checkout procedures
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Abstract
The invention discloses a weighing method, a weighing device, an unmanned sales counter and an unmanned sales method. The weighing method comprises the following steps: the weighing module acquires the weight value of the commodity placed on the weighing module in real time and transmits the acquired current weight value to the data processing module according to a preset frequency in unit time; the data processing module obtains the current actual weight value of the commodity on the weighing module according to the plurality of current weight values received in the preset time period. According to the technical scheme provided by the invention, the frequency of transmitting the current weight value to the data processing module by the weighing module in unit time is increased, and the current actual weight value of the commodity is screened from a plurality of current weight values in a preset time period by the data processing module, so that the current actual weight of the commodity on the weighing module can be more accurately obtained, the probability that the actual weight of the commodity is not consistent with the weight obtained by testing is reduced, and the probability that the calculated quantity of the commodity is not consistent with the actual quantity of the commodity is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of automation equipment, in particular to a weighing method, a weighing device, an unmanned sales counter and an unmanned sales method.
Background
With the popularization of a business model of new retail unmanned selling goods in the market, the new retail selling mode is mainly realized by adopting an image recognition and weighing mode at present. Currently, the weighing mode generally adopts a gravity sensing module (also called a gravity module) for weighing, and an open type shelf is used. The basic principle is as follows: the same kind of goods is placed on the same gravity module, and the weight of each goods is the same. When the weight changes, the amount of the commodity taken away by the user can be obtained by dividing the weight change amount by the weight of the single commodity.
However, in the practical application process, if the user collides with the weighing module or looses hands to place the commodity at a higher position, the force felt by the gravity sensing module increases at the moment when the commodity contacts the weighing module due to the acceleration effect of the free falling body of the commodity, and the weight value at this moment is taken as the actual weight value of the commodity, so that the weight of the commodity increases, the number of the commodity increases, and the calculated number of the commodity does not accord with the actual number of the commodity.
Disclosure of Invention
The invention provides a weighing method, a weighing device, an unmanned sales counter and an unmanned sales method, which are used for accurately acquiring the actual weight of commodities and reducing the probability that the calculated quantity of the commodities is inconsistent with the actual quantity of the commodities.
In a first aspect, an embodiment of the present invention provides a weighing method, where the weighing method includes:
the weighing module acquires the weight value of the commodity placed on the weighing module in real time and transmits the acquired current weight value to the data processing module according to a preset frequency in unit time;
the data processing module obtains the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period.
Further, the data processing module obtains the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period, and the data processing module comprises:
the data processing module obtains at least one current weight value in a plurality of current weight values within a preset numerical value fluctuation range, and takes the average value of at least one current weight value within the preset numerical value fluctuation range as the current actual weight value.
Further, the number of the plurality of current weight values received by the data processing module in a preset time period is odd;
the data processing module obtains the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period, and the current actual weight value of the commodity comprises the following steps:
if the plurality of current weight values received in a preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
when the number of the first type current weight values in the preset time period is larger than that of the second type current weight values, the data processing module takes the average value of a plurality of first type current weight values obtained in the preset time period as the current actual weight value;
and when the number of the second type current weight values in the preset time period is greater than that of the first type current weight values, the data processing module takes the average value of a plurality of second type current weight values acquired in the preset time period as the current actual weight value.
Further, the data processing module obtains the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period, and then the method further comprises:
the data processing module judges whether the current actual weight value of the current preset time period is equal to the current actual weight value of the last preset time period;
if not, the data processing module acquires the quantity difference of the commodities on the weighing module in the current preset time period and the last preset time period according to the current actual weight value in the current preset time period, the current actual weight value in the last preset time period and the weight value of a single commodity.
Further, the data processing module obtains the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period, and the data processing module comprises:
if the plurality of current weight values received in a preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
when the number of the first type current weight values in the preset time period is larger than that of the second type current weight values, the data processing module takes the average value of a plurality of first type current weight values obtained in the preset time period as the current actual weight value;
when the number of the second type current weight values in the preset time period is larger than that of the first type current weight values, the data processing module takes the average value of a plurality of second type current weight values obtained in the preset time period as the current actual weight value;
and the data processing module abandons a plurality of first-type current weight values and a plurality of second-type current weight values obtained in the preset time period when the number of the first-type current weight values is equal to the number of the second-type current weight values in the preset time period.
Further, when the number of the first-type current weight values is equal to the number of the second-type current weight values in the preset time period, the data processing module further includes, after discarding the plurality of first-type current weight values and the plurality of second-type current weight values obtained in the preset time period:
and the data processing module acquires the quantity difference value of the commodities on the weighing module in the last preset time period and the next preset time period of the current preset time period according to the current actual weight value in the last preset time period of the preset time period, the current actual weight value in the next preset time period of the preset time period and the weight value of a single commodity.
Further, the value range of the preset frequency is 3 times/second to 8 times/second.
Further, the value range of the preset time period is 2 seconds to 4 seconds.
In a second aspect, an embodiment of the present invention further provides a weighing apparatus, which is configured to perform any one of the weighing methods provided in the first aspect, and the weighing apparatus includes: the weighing module and the data processing module;
the weighing module is used for acquiring the weight value of the commodity placed on the weighing module in real time and transmitting the acquired current weight value to the data processing module according to a preset frequency in unit time;
the data processing module is used for acquiring the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period.
Further, the data processing module comprises an actual weight obtaining submodule;
the actual weight obtaining submodule is used for obtaining a plurality of current weight values, wherein the current weight values are at least one current weight value within a preset numerical value fluctuation range, and the average value of the at least one current weight value within the preset numerical value fluctuation range is used as the current actual weight value.
Further, the actual weight obtaining sub-module comprises a first obtaining sub-module;
the first obtaining submodule is used for receiving odd current weight values in a preset time period;
if the odd number of current weight values received in the preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values, the plurality of first type current weight values are within a preset value fluctuation range, the plurality of second type current weight values are within a preset value fluctuation range, and the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
the first obtaining sub-module is further configured to, when the number of the first-type current weight values in the preset time period is greater than the number of the second-type current weight values, take an average value of the plurality of first-type current weight values obtained in the preset time period as the current actual weight value; and when the number of the second type current weight values in the preset time period is larger than that of the first type current weight values, taking the average value of the plurality of second type current weight values acquired in the preset time period as the current actual weight value.
Further, the data processing module further comprises a first quantity calculation submodule connected with the first acquisition submodule;
the first obtaining submodule is also used for transmitting the current actual weight value to the first quantity calculating submodule;
the first quantity calculation submodule is used for judging whether the current actual weight value of the current preset time period is equal to the current actual weight value of the last preset time period or not, and acquiring the quantity difference value of the current preset time period and the goods on the weighing module of the last preset time period according to the current actual weight value of the current preset time period, the current actual weight value of the last preset time period and the weight value of a single goods when the judgment result is negative.
Further, the actual weight obtaining sub-module comprises a second obtaining sub-module;
if the plurality of current weight values received in a preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
the second obtaining sub-module is configured to, when the number of the first-type current weight values is greater than the number of the second-type current weight values in the preset time period, take an average value of the plurality of first-type current weight values obtained in the preset time period as the current actual weight value;
the second obtaining sub-module is further configured to, when the number of the second type current weight values in the preset time period is greater than the number of the first type current weight values, take an average value of a plurality of second type current weight values obtained in the preset time period as the current actual weight value;
the second obtaining sub-module is further configured to discard the plurality of first type current weight values and the plurality of second type current weight values obtained within the preset time period when the number of the first type current weight values is equal to the number of the second type current weight values within the preset time period.
Further, the data processing module further comprises a second numeration operator module, and the second numeration operator module is connected with the second obtaining sub-module;
the second obtaining sub-module is further used for transmitting the current actual weight value to the second numerical measuring sub-module;
the second quantity calculation sub-module is further configured to, when the second obtaining sub-module discards a plurality of first-type current weight values and a plurality of second-type current weight values obtained in the preset time period, obtain a quantity difference value between the commodities on the weighing module in the previous preset time period and the commodities in the next preset time period in the current preset time period according to the current actual weight value in the previous preset time period in the preset time period, the current actual weight value in the next preset time period in the preset time period, and the weight value of a single commodity.
In a third aspect, an embodiment of the present invention further provides an unmanned sales counter, where the unmanned sales counter includes any one of the weighing devices provided in the second aspect, and further includes a display device, and the display device is connected to the weighing device;
the display device is used for displaying the quantity difference and the type of the commodities on the weighing module; and calculating the total amount of the commodities according to the quantity difference, the types and the unit price of the commodities, and displaying the two-dimensional code for a user to scan the code for payment.
In a fourth aspect, an embodiment of the present invention further provides an unmanned vending method, where the unmanned vending method is performed by the unmanned vending cabinet provided in the third aspect, and the unmanned vending method includes: .
The weighing device acquires the quantity difference of the commodities and transmits the quantity difference to the display device;
the display device displays the quantity difference and the type of the commodities on the weighing module; and calculating the total amount of the commodities according to the quantity difference, the types and the unit price of the commodities, and displaying the two-dimensional code for a user to scan the code for payment.
According to the weighing method provided by the embodiment of the invention, the weighing module transmits the obtained current weight value to the data processing module according to the preset frequency in unit time, so that the frequency of transmitting the current weight value to the data processing module by the weighing module in unit time can be increased; meanwhile, the current actual weight value of the commodity is screened from the plurality of current weight values in the preset time period through the data processing module, and the current actual weight value of the commodity on the weighing module can be more accurately obtained, so that the probability that the actual weight of the commodity is not consistent with the weight obtained by testing can be reduced, and the probability that the calculated quantity of the commodity is not consistent with the actual quantity of the commodity is reduced.
Drawings
FIG. 1 is a schematic flow chart of a weighing method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of another weighing method provided by an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another weighing method provided by the embodiment of the invention;
FIG. 4 is a schematic flow chart of another weighing method provided by the embodiment of the invention;
FIG. 5 is a schematic structural diagram of a weighing apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of another weighing apparatus provided in accordance with an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another weighing apparatus provided in the embodiments of the present invention;
FIG. 8 is a schematic structural diagram of an unmanned sales container according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating an exemplary vending method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic flow chart of a weighing method according to an embodiment of the present invention. Referring to fig. 1, the weighing method includes:
s11, the weighing module acquires the weight value of the commodity placed on the weighing module in real time and transmits the acquired current weight value to the data processing module according to the preset frequency in unit time.
The weighing module may be a bellows weighing module, a cantilever weighing module, a column weighing module, or other types of weighing modules known to those skilled in the art, which is not limited in the embodiments of the present invention.
Illustratively, the load module includes a weight sensor that senses a weight value of the item on the load module in real time.
The preset frequency can be understood as the number of times that the weighing module transmits data to the data processing module in unit time, and can also be understood as the number of the current weight values that the weighing module transmits to the data processing module in unit time.
Illustratively, the preset frequency may be 5 times/second or 5 times/second. Of course, the value of the preset frequency may also be set according to the actual requirement of the weighing method, which is not limited in the embodiment of the present invention.
The data processing module can receive the current weight value transmitted by the weighing module, and then process the current weight value to obtain the current actual weight (detailed below).
For example, the data processing module may include an automatic data processing program, or may be a data processing module embedded in the central processing unit, or may use other types of data processing modules known to those skilled in the art, and the embodiment of the present invention is not limited thereto.
S12, the data processing module obtains the current actual weight value of the commodity on the weighing module according to the plurality of current weight values received in the preset time period.
In combination with S11, the weighing module transmits the current weight value to the data processing module according to the preset frequency in unit time, and the weighing module transmits a plurality of current weight values to the data processing module in the preset time period. The number of the current weight values can be obtained by adding preset frequencies in a preset time period, and when the preset frequency is a certain value, the number of the current weight values can also be obtained by multiplying the preset frequency by the preset time period.
For example, the preset frequency is a fixed value and is 5 times/second, and the preset time period is 1.2 seconds, then the number of the current weight values in the preset time period is 6.
In the step, the current actual weight value of the commodity on the weighing module is obtained on the basis of a plurality of current weight values received in a preset time period, and the current actual weight value can be calculated by only selecting the current weight value with higher correlation with the current actual weight value, so that the influence of the current weight value with larger deviation with the current actual weight value on the current actual weight value is eliminated, the commodity weight deviation caused by the fact that a user collides with the weighing module can be avoided, and the commodity weight deviation caused by the acceleration action of free falling bodies of the commodity when the user places the commodity in a loose hand at a higher position can also be avoided. Therefore, the current actual weight value of the commodity on the weighing module can be accurately acquired, the probability that the actual weight of the commodity is not consistent with the weight obtained through testing can be reduced, and the probability that the calculated quantity of the commodity is not consistent with the actual quantity of the commodity is reduced.
Optionally, in the above S11, the preset frequency may range from 3 times/second to 8 times/second.
Due to the arrangement, on one hand, the value of the preset frequency cannot be too small, so that the actual weight value of the commodity can be ensured to have higher accuracy; on the other hand, the value of the preset frequency is not too large, so that the moderate transmission frequency of the current weight value can be ensured, and the transmission difficulty of the current weight value is smaller.
It should be noted that the value range of the preset frequency is only an exemplary illustration, and is not a limitation on the weighing method provided by the embodiment of the present invention. In other embodiments, a value range of the preset frequency may also be set according to an actual requirement of the weighing method, and may be, for example, 4 times/second to 7 times/second, or may be 4.5 times/second to 6.5 times/second, which is not limited in this embodiment of the present invention.
Optionally, the value range of the preset time period is 2 seconds to 4 seconds.
According to the arrangement, on one hand, the time range of the preset time period is not too small, so that the actual weight value of the commodity is ensured to have higher accuracy; on the other hand, the time range of the preset time period is not too large, so that the probability that the actual weight value of the commodity on the weighing module is changed in the time range of one preset time period can be avoided, the current weight value in one time period can correspond to the state that the quantity of the commodity on the weighing module is not changed as much as possible, and the data processing difficulty of the data processing module can be reduced.
It should be noted that the value range of the preset time period is only an exemplary illustration, and is not a limitation on the weighing method provided by the embodiment of the present invention. In other embodiments, a value range of a preset time period may also be set according to an actual requirement of the weighing method, which may be, for example, 2.5 seconds to 4 seconds, or may be 3 seconds, and this is not limited in the embodiment of the present invention.
Optionally, fig. 2 is a schematic flow chart of another weighing method provided in the embodiment of the present invention. Referring to fig. 2, the weighing method may include:
s21, the weighing module acquires the weight value of the commodity placed on the weighing module in real time and transmits the acquired current weight value to the data processing module according to the preset frequency in unit time.
S22, the data processing module obtains at least one current weight value in a preset numerical value fluctuation range in the plurality of current weight values, and takes the average value of the at least one current weight value in the preset numerical value fluctuation range as the current actual weight value.
And the current weight value within the preset numerical value fluctuation range is the current weight value with higher correlation with the current actual weight value.
Illustratively, the actual weight of each commodity is 100g ± 0.05 g; the current weight values are 1200g, 1201g, 1200.5g, 1200.8g and 1250g respectively, the fluctuation range of the preset numerical value is +/-3 g, the 1200g, 1201g, 1200.5g and 1200.8g are all in the fluctuation range of the preset numerical value, and the 1250g is not in the fluctuation range of the preset numerical value; at this time, an average value of one or more of 1200g, 1201g, 1200.5g, and 1200.8g may be used as the current actual weight value. Therefore, the influence of 1250g on the current actual weight value is eliminated, so that the current actual weight value can more accurately represent the current actual weight of the commodity on the weighing module, the probability that the actual weight of the commodity is not consistent with the tested weight can be reduced, and the probability that the calculated quantity of the commodity is not consistent with the actual quantity of the commodity can be reduced.
Optionally, fig. 3 is a schematic flow chart of another weighing method according to an embodiment of the present invention, which shows the weighing method when the number of the plurality of current weight values received by the data processing module in the preset time period is an odd number. Referring to fig. 3, the weighing method includes:
s31, the weighing module acquires the weight value of the commodity placed on the weighing module in real time and transmits the acquired current weight value to the data processing module according to the preset frequency in unit time.
And then, the data processing module acquires the current actual weight value of the commodity on the weighing module according to the plurality of current weight values received in the preset time period.
Specifically, if the plurality of current weight values received within the preset time period include a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value.
The number of the commodities on the weighing module corresponding to the plurality of first-type current weight values is one, for example, the number is 10; the number of the commodities on the weighing module corresponding to the plurality of second-type current weight values is another number, for example, the number is 8. Namely, the quantity of the commodities on the weighing module is changed in the same preset time period; at this time, acquiring the current actual weight value may be performed as per S32A or S32B.
S32A, when the number of the first type current weight values is larger than the number of the second type current weight values in the preset time period, the data processing module takes the average value of the plurality of first type current weight values obtained in the preset time period as the current actual weight value.
Illustratively, the total number of the current weight values in the preset time period is 7, wherein the current weight values of the first type are 1200g, 1201g, 1200.5g and 1200.8g, respectively, and the number is 4; the second type of current weight values are respectively 1000g, 1000.1g and 1000.5g, and the number is 3; at this time, the average value of 1200g, 1201g, 1200.5g, and 1200.8g was taken as the current actual weight value.
S32B, when the number of the second type current weight values in the preset time period is larger than that of the first type current weight values, the data processing module takes the average value of a plurality of second type current weight values obtained in the preset time period as the current actual weight value.
Illustratively, the total number of the current weight values in the preset time period is 7, wherein the current weight values of the first type are 1200g, 1201g and 1200.8g respectively, and the number is 3; the second type of current weight values are respectively 1000g, 1000.3g, 1000.1g and 1000.5g, and the number is 4; at this time, the average of 1000g, 1000.3g, 1000.1g, and 1000.5g was taken as the current actual weight value.
S33, the data processing module judges whether the current actual weight value of the current preset time period is equal to the current actual weight value of the last preset time period.
If the judgment result is yes, the fact that the number of the commodities on the weighing module is not changed is indicated.
If the determination result is negative, the number of the items on the surface weighing module is changed, and S34 is executed.
S34, the data processing module obtains the quantity difference of the commodities on the weighing modules in the current preset time period and the last preset time period according to the current actual weight value of the current preset time period, the current actual weight value of the last preset time period and the weight value of a single commodity.
The difference value between the current actual weight value of the current preset time period and the current actual weight value of the last preset time period is the change of the commodity weight corresponding to the commodity quantity change, and the quantity difference value of the commodity can be obtained by dividing the change quantity of the commodity weight by the weight value of a single commodity.
Illustratively, the actual weight value of the current preset time period can be understood as the weight of the commodity after the commodity is taken away by the user, and the actual weight value of the last preset time period can be understood as the weight of the commodity before the commodity is taken away by the user; the weight difference of the commodities corresponds to the weight of the commodities taken away by the user, and the quantity difference of the commodities on the weighing module, namely the quantity of the commodities taken away by the user, can be obtained by dividing the weight by the weight of a single commodity.
It should be noted that in the weighing method shown in fig. 3, the "equal" in S33 is not strictly equal in mathematical sense, but two current actual weight values are equal within a preset range under the premise of considering the weight deviation of the commodity, and the numerical value of the preset range may be set according to the weight deviation of a single commodity, which is not limited in the embodiment of the present invention.
Optionally, fig. 4 is a schematic flow chart of another weighing method provided in the embodiment of the present invention, which can be understood as a weighing method when the number of the plurality of current weight values received by the data processing module in the preset time period is an even number. Referring to fig. 4, the weighing method includes:
s41, the weighing module acquires the weight value of the commodity placed on the weighing module in real time and transmits the acquired current weight value to the data processing module according to the preset frequency in unit time.
And then, the data processing module acquires the current actual weight value of the commodity on the weighing module according to the plurality of current weight values received in the preset time period.
Specifically, if the plurality of current weight values received within the preset time period include a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value.
The number of the commodities on the weighing module corresponding to the plurality of first-type current weight values is one, for example, the number is 10; the number of the commodities on the weighing module corresponding to the plurality of second-type current weight values is another number, for example, the number is 8. Namely, the quantity of the commodities on the weighing module is changed in the same preset time period; at this time, acquiring the current actual weight value may be performed according to S42A, S42B, or S42C.
S42A, when the number of the first type current weight values is larger than the number of the second type current weight values in the preset time period, the data processing module takes the average value of a plurality of first type current weight values obtained in the preset time period as the current actual weight value.
Illustratively, the total number of current weight values within the preset time period is 6, wherein the current weight values of the first type are 1202g, 1199.5g, 1200.5g and 1200.8g, respectively, and the number is 4; the second type of current weight values are 1000.1g and 1000.5g respectively, and the number is 2; at this time, the average of 1202g, 1199.5g, 1200.5g, and 1200.8g was taken as the current actual weight value.
S42B, when the number of the second type current weight values in the preset time period is larger than that of the first type current weight values, the data processing module takes the average value of a plurality of second type current weight values obtained in the preset time period as the current actual weight value.
Illustratively, the total number of the current weight values in the preset time period is 6, wherein the current weight values of the first type are 1201g and 1200.8g respectively, and the number is 2; the second type of current weight values are respectively 1000g, 1000.3g, 1000.1g and 1000.5g, and the number is 4; at this time, the average of 1000g, 1000.3g, 1000.1g, and 1000.5g was taken as the current actual weight value.
S42C, when the number of the first type current weight values is equal to the number of the second type current weight values in the preset time period, the data processing module discards a plurality of first type current weight values and a plurality of second type current weight values obtained in the preset time period.
Illustratively, the total number of the current weight values in the preset time period is 6, wherein the current weight values of the first type are 1200.5g, 1201g and 1200.8g, respectively, and the number is 3; the second type of current weight values are 1000.3g, 1000.1g and 1000.5g respectively, and the number of the second type of current weight values is 3; at this point, the set of data is discarded.
The above S42A and S42B may both obtain the current actual weight value for the current preset time period, and thereafter, each S43AB is performed.
S43AB, the data processing module obtains the quantity difference of the commodities on the weighing modules in the current preset time period and the last preset time period according to the current actual weight value of the current preset time period, the current actual weight value of the last preset time period and the weight value of a single commodity.
The above S42C discards the data in the current preset time period, that is, the current actual weight value in the current preset time period cannot be obtained, and then S43C is executed.
S43C, the data processing module obtains the quantity difference of the commodities on the weighing module in the last preset time period and the next preset time period of the current preset time period according to the current actual weight value in the last preset time period of the preset time period, the current actual weight value in the next preset time period of the preset time period and the weight value of a single commodity.
In combination with S42C and a specific application scenario of the unmanned sales counter, the time range of the current preset time period is divided equally by two states (before the user takes the commodity and after the user takes the commodity); at this time, the current actual weight value of the last preset time period of the current preset time period can be understood as the weight of the commodity before the user takes the commodity; the current actual weight value of the next preset time period of the current preset time period can be understood as the weight of the commodity after the commodity is taken away by the user; the weight difference of the commodities in the last preset time period and the next preset time period corresponds to the weight of the commodities taken away by the user, and the quantity difference of the commodities on the weighing module, namely the quantity of the commodities taken away by the user, can be obtained by dividing the weight by the weight of a single commodity.
Therefore, the two weighing methods shown in fig. 3 and 4 can realize accurate weighing and calculate the quantity difference of the commodities on the weighing module.
It should be noted that the weighing method shown in fig. 4 does not include a comparison step, so that the difference between the quantities of the products in S43AB and S43C may be 0, which represents that the quantity of the product on the weighing module is unchanged.
Based on the same inventive concept, an embodiment of the present invention further provides a weighing apparatus, which can be used to perform any one of the weighing methods provided in the foregoing embodiments, and therefore, the weighing apparatus also has the technical effects of the weighing method provided in the foregoing embodiments, and the detailed explanation thereof is not repeated herein.
For example, fig. 5 is a schematic structural diagram of a weighing apparatus according to an embodiment of the present invention. Referring to fig. 5, the weighing device 50 includes: a weighing module 501 and a data processing module 502; the weighing module 501 is configured to obtain a weight value of a commodity placed on the weighing module 501 in real time, and transmit the obtained current weight value to the data processing module 502 according to a preset frequency in unit time; the data processing module 502 is configured to obtain a current actual weight value of the commodity on the weighing module 501 according to a plurality of current weight values received within a preset time period.
Therefore, the weighing module 501 transmits the obtained current weight value to the data processing module 502 according to the preset frequency in unit time, so that the frequency of transmitting the current weight value from the weighing module 501 to the data processing module 502 in unit time can be increased; meanwhile, the data processing module 502 screens a plurality of current weight values in a preset time period to obtain the current actual weight value of the commodity, and the current actual weight value of the commodity on the weighing module 501 can be more accurately obtained, so that the weighing accuracy of the weighing device 50 can be improved, that is, the probability that the actual weight of the commodity does not accord with the weight obtained by testing can be reduced, and the probability that the calculated quantity of the commodity does not accord with the actual quantity of the commodity is reduced.
Optionally, with continued reference to fig. 5, the data processing module 502 includes an actual weight obtaining sub-module 502A; the actual weight obtaining sub-module 502A is configured to obtain at least one current weight value within a preset value fluctuation range from among the plurality of current weight values, and use an average value of the at least one current weight value within the preset value fluctuation range as the current actual weight value.
So set up, be favorable to obtaining the present actual weight value that submodule 502A can acquire the commodity on weighing module 501 through actual weight, improve weighing device 50's the accuracy of weighing.
Optionally, fig. 6 is a schematic structural diagram of another weighing apparatus provided in the embodiment of the present invention. Referring to FIG. 6, actual weight acquisition submodule 502A includes a first acquisition submodule 502A 1; the first obtaining sub-module 502a1 is configured to receive an odd number of current weight values within a preset time period; if the odd number of current weight values received in the preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values, the plurality of first type current weight values are within a preset value fluctuation range, the plurality of second type current weight values are within a preset value fluctuation range, and the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value; the first obtaining sub-module 502a1 is further configured to, when the number of the first type current weight values is greater than the number of the second type current weight values in a preset time period, take an average value of a plurality of first type current weight values obtained in the preset time period as a current actual weight value; and the weight calculating device is used for taking the average value of a plurality of second type current weight values obtained in the preset time period as the current actual weight value when the number of the second type current weight values in the preset time period is larger than that of the first type current weight values.
So set up, can filter odd number current weight value through first obtaining submodule 502A1, obtain the current actual weight value of the commodity on the weighing module 501 to weighing accuracy that weighing device 50 can be improved.
Optionally, with continued reference to fig. 6, the data processing module 502 further includes a first quantity calculation submodule 502B1, the first quantity calculation submodule 502B1 is connected to the first obtaining submodule 502a 1; the first obtaining sub-module 502A1 is further configured to transmit the current actual weight value to the first quantity calculation sub-module 502B 1; the first quantity calculation submodule 502B1 is configured to determine whether the current actual weight value of the current preset time period is equal to the current actual weight value of the previous preset time period, and if the determination result is negative, obtain a quantity difference value between the commodities on the weighing modules of the current preset time period and the previous preset time period according to the current actual weight value of the current preset time period, the current actual weight value of the previous preset time period, and the weight value of a single commodity.
So set up, after obtaining more accurate current actual weight value through first acquisition submodule 502A1, calculate the quantity difference of commodity through first quantity calculation submodule 502B1, on the accurate basis of current actual weight of commodity, make the quantity difference of commodity more accurate, thereby can avoid colliding with the commodity weight deviation that weighing module 501 arouses and the commodity quantity deviation that leads to by the user, and can avoid the user when placing commodity in higher position pine hand, because commodity weight deviation that the acceleration effect of commodity free fall arouses and the commodity quantity deviation that leads to.
Optionally, fig. 7 is a schematic structural diagram of another weighing apparatus provided in the embodiment of the present invention. Referring to FIG. 7, actual weight acquisition submodule 502A includes a second acquisition submodule 502A 2; if the plurality of current weight values received in the preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value; the second obtaining sub-module 502a2 is configured to, when the number of the first-type current weight values is greater than the number of the second-type current weight values in a preset time period, take an average value of a plurality of first-type current weight values obtained in the preset time period as a current actual weight value; the second obtaining sub-module 502a2 is further configured to, when the number of the second type current weight values in the preset time period is greater than the number of the first type current weight values, take an average value of a plurality of second type current weight values obtained in the preset time period as a current actual weight value; the second obtaining sub-module 502a2 is further configured to discard the plurality of first type current weight values and the plurality of second type current weight values obtained within the preset time period when the number of the first type current weight values is equal to the number of the second type current weight values within the preset time period.
So set up, obtain submodule 502A2 through the second and can filter a plurality of current weight values, obtain the current actual weight value of the commodity on weighing module 501, can improve weighing device 50's the accuracy of weighing.
Optionally, with continued reference to fig. 7, the data processing module 502 further comprises a second numerator sub-module 502B2, the second numerator sub-module 502B2 being connected to the second acquisition sub-module 502a 2; the second obtaining sub-module 502a2 is further configured to transmit the current actual weight value to the second numerator sub-module 502B 2; the second quantity calculation sub-module 502B2 is further configured to, when the second obtaining sub-module discards the plurality of first-type current weight values and the plurality of second-type current weight values obtained in the preset time period, obtain a quantity difference value between the commodities on the weighing modules in the previous preset time period and the next preset time period of the current preset time period according to the current actual weight value in the previous preset time period of the preset time period, the current actual weight value in the next preset time period of the preset time period, and the weight value of a single commodity.
So set up, after obtaining more accurate current actual weight value through the second and obtaining submodule 502A2, calculate the quantity difference of commodity through second quantity calculation submodule 502B2, on the accurate basis of current actual weight of commodity, make the quantity difference of commodity more accurate, thereby can avoid colliding with the commodity weight deviation that weighing module 501 arouses and the commodity quantity deviation that leads to by the user, and can avoid the user when placing commodity in higher position pine hand, because commodity weight deviation that the acceleration effect of commodity free fall arouses and the commodity quantity deviation that leads to.
It should be noted that, in the weighing apparatus 50 shown in fig. 5 to fig. 7, data transmission between the weighing module 501 and the data processing module 502 and data transmission between sub-modules inside the data processing module 502 may be implemented by wired transmission or wireless transmission, which is not repeated and is not limited in the embodiments of the present invention.
On the basis of the foregoing embodiments, an embodiment of the present invention further provides an unmanned sales counter, where the unmanned sales counter includes any one of the weighing devices provided in the foregoing embodiments, and therefore, the unmanned sales counter also has the technical effects of the weighing device provided in the foregoing embodiments, and the details which are not explained in detail can be referred to the above understanding, and are not described herein again.
Exemplarily, fig. 8 is a schematic structural diagram of an unmanned sales counter according to an embodiment of the present invention. Referring to fig. 8, the unmanned sales counter 80 includes a weighing device 50, and further includes a display device 81, the display device 81 being connected to the weighing device 50; the display device 81 is used for displaying the quantity difference and the type of the commodities on the weighing module 501; and calculating the total amount of the commodities according to the quantity difference, the types and the unit price of the commodities, and displaying the two-dimensional code for a user to scan the code for payment.
The type of the commodity may correspond to the weighing module 501, and the type determination method may include: the program is embedded in the display device 81, and may also include a video module to capture and transmit to the display device 81. The calculation of the total amount may be automatically performed by the display device 81.
Of course, besides the above code scanning payment method, the payment method also includes other types of payment methods known to those skilled in the art, such as coins, paper money, internet bank, or card swiping, and the embodiment of the present invention is not limited thereto.
It should be noted that fig. 8 exemplarily shows that one unmanned sales counter 80 includes 3 weighing devices 50, but the embodiment of the present invention is not limited thereto. In other embodiments, the number and the relative spatial position of the weighing devices 50 may be set according to the actual requirements of the unmanned sales counter 80, which is not limited by the embodiment of the present invention.
On the basis of the foregoing embodiments, an embodiment of the present invention further provides an automatic vending method, which can be executed by the automatic vending cabinet provided in the foregoing embodiments, so that the automatic vending method also has the technical effects of the automatic vending cabinet in the foregoing embodiments, and reference may be made to the above explanations for details, which are not repeated herein.
For example, fig. 9 is a schematic flow chart of an unmanned vending method according to an embodiment of the present invention. Referring to fig. 9, the unmanned vending method includes:
and S91, the weighing device acquires the quantity difference of the commodities and transmits the quantity difference to the display device.
Illustratively, in connection with fig. 8, the data transmission between the weighing device 50 and the display device 81 may be performed by way of wired transmission. Of course, the data transmission between the two may also be implemented by a wireless transmission mode, which is not limited in the embodiment of the present invention.
S92, displaying the quantity difference and the type of the commodities on the weighing module by the display device; and calculating the total amount of the commodities according to the quantity difference, the types and the unit price of the commodities, and displaying the two-dimensional code for a user to scan the code for payment.
Therefore, the process of independently purchasing commodities by the user can be completed.
The weighing method, the weighing device, the unmanned sales counter and the unmanned sales method provided by the embodiment of the invention can transmit the obtained current weight value to the data processing module according to the preset frequency in unit time through the weighing module, and can improve the frequency of transmitting the current weight value to the data processing module by the weighing module in unit time; meanwhile, the current actual weight value of the commodity is screened from the plurality of current weight values in the preset time period through the data processing module, and the current actual weight value of the commodity on the weighing module can be more accurately obtained, so that the probability that the actual weight of the commodity is not consistent with the weight obtained by testing can be reduced, and the probability that the calculated quantity of the commodity is not consistent with the actual quantity of the commodity is reduced.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations, and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method of weighing, comprising:
the weighing module acquires the weight value of the commodity placed on the weighing module in real time and transmits the acquired current weight value to the data processing module according to a preset frequency in unit time; wherein the value range of the preset frequency is 3 times/second to 8 times/second;
the data processing module acquires the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period; wherein the value range of the preset time period is 2-4 seconds;
wherein, the data processing module obtains the current actual weight value of the commodity on the weighing module according to a plurality of the current weight values received in the preset time period, and the current actual weight value of the commodity comprises:
the data processing module acquires at least one current weight value in a preset value fluctuation range from a plurality of current weight values, and takes an average value of the at least one current weight value in the preset value fluctuation range as the current actual weight value, wherein the number of the current weight values is obtained by adding preset frequencies in a preset time period, and when the preset frequency is a certain value, the number of the current weight values is obtained by multiplying the preset frequency by the preset time period;
the number of the plurality of current weight values received by the data processing module in a preset time period is odd;
the data processing module obtains the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period, and the current actual weight value of the commodity comprises the following steps:
if the plurality of current weight values received in a preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
when the number of the first type current weight values in the preset time period is larger than that of the second type current weight values, the data processing module takes the average value of a plurality of first type current weight values obtained in the preset time period as the current actual weight value;
and when the number of the second type current weight values in the preset time period is greater than that of the first type current weight values, the data processing module takes the average value of a plurality of second type current weight values acquired in the preset time period as the current actual weight value.
2. The weighing method according to claim 1, wherein the step of acquiring, by the data processing module, the current actual weight value of the commodity on the weighing module according to a plurality of the current weight values received within a preset time period further comprises:
the data processing module judges whether the current actual weight value of the current preset time period is equal to the current actual weight value of the last preset time period;
if not, the data processing module acquires the quantity difference of the commodities on the weighing module in the current preset time period and the last preset time period according to the current actual weight value in the current preset time period, the current actual weight value in the last preset time period and the weight value of a single commodity.
3. The weighing method according to claim 1, wherein the obtaining, by the data processing module, the current actual weight value of the product on the weighing module according to a plurality of the current weight values received within a preset time period comprises:
if the plurality of current weight values received in a preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
when the number of the first type current weight values in the preset time period is larger than that of the second type current weight values, the data processing module takes the average value of a plurality of first type current weight values obtained in the preset time period as the current actual weight value;
when the number of the second type current weight values in the preset time period is larger than that of the first type current weight values, the data processing module takes the average value of a plurality of second type current weight values obtained in the preset time period as the current actual weight value;
and the data processing module abandons a plurality of first-type current weight values and a plurality of second-type current weight values obtained in the preset time period when the number of the first-type current weight values is equal to the number of the second-type current weight values in the preset time period.
4. The weighing method according to claim 3, wherein the discarding the plurality of first type current weight values and the plurality of second type current weight values obtained within the preset time period when the number of first type current weight values is equal to the number of second type current weight values within the preset time period by the data processing module further comprises:
and the data processing module acquires the quantity difference value of the commodities on the weighing module in the last preset time period and the next preset time period of the current preset time period according to the current actual weight value in the last preset time period of the preset time period, the current actual weight value in the next preset time period of the preset time period and the weight value of a single commodity.
5. A weighing apparatus for carrying out the weighing method of any one of claims 1-4, the weighing apparatus comprising: the weighing module and the data processing module;
the weighing module is used for acquiring the weight value of the commodity placed on the weighing module in real time and transmitting the acquired current weight value to the data processing module according to a preset frequency in unit time; wherein the value range of the preset frequency is 3 times/second to 8 times/second;
the data processing module is used for acquiring the current actual weight value of the commodity on the weighing module according to a plurality of current weight values received in a preset time period; wherein the value range of the preset time period is 2-4 seconds;
the data processing module comprises an actual weight obtaining submodule;
the actual weight obtaining sub-module is configured to obtain at least one current weight value of the plurality of current weight values within a preset value fluctuation range, and use an average value of the at least one current weight value within the preset value fluctuation range as the current actual weight value, where the number of the current weight values is obtained by summing preset frequencies within a preset time period, and when the preset frequency is a certain value, the number of the current weight values is obtained by multiplying the preset frequency by the preset time period;
wherein the actual weight obtaining submodule comprises a first obtaining submodule;
the first obtaining submodule is used for receiving odd current weight values in a preset time period;
if the odd number of current weight values received in the preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values, the plurality of first type current weight values are within a preset value fluctuation range, the plurality of second type current weight values are within a preset value fluctuation range, and the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
the first obtaining sub-module is further configured to, when the number of the first-type current weight values in the preset time period is greater than the number of the second-type current weight values, take an average value of the plurality of first-type current weight values obtained in the preset time period as the current actual weight value; and when the number of the second type current weight values in the preset time period is larger than that of the first type current weight values, taking the average value of the plurality of second type current weight values acquired in the preset time period as the current actual weight value.
6. The weighing apparatus according to claim 5, wherein the data processing module further comprises a first number calculating submodule connected to the first obtaining submodule;
the first obtaining submodule is also used for transmitting the current actual weight value to the first quantity calculating submodule;
the first quantity calculation submodule is used for judging whether the current actual weight value of the current preset time period is equal to the current actual weight value of the last preset time period or not, and acquiring the quantity difference value of the current preset time period and the goods on the weighing module of the last preset time period according to the current actual weight value of the current preset time period, the current actual weight value of the last preset time period and the weight value of a single goods when the judgment result is negative.
7. The weighing apparatus of claim 5, wherein the actual weight acquisition submodule comprises a second acquisition submodule;
if the plurality of current weight values received in a preset time period comprise a plurality of first type current weight values and a plurality of second type current weight values; a plurality of first type current weight values are in a preset value fluctuation range; a plurality of second type current weight values are in a preset value fluctuation range; the difference value between the average value of the plurality of first type current weight values and the average value of the plurality of second type current weight values is larger than a preset threshold value;
the second obtaining sub-module is configured to, when the number of the first-type current weight values is greater than the number of the second-type current weight values in the preset time period, take an average value of the plurality of first-type current weight values obtained in the preset time period as the current actual weight value;
the second obtaining sub-module is further configured to, when the number of the second type current weight values in the preset time period is greater than the number of the first type current weight values, take an average value of a plurality of second type current weight values obtained in the preset time period as the current actual weight value;
the second obtaining sub-module is further configured to discard the plurality of first type current weight values and the plurality of second type current weight values obtained within the preset time period when the number of the first type current weight values is equal to the number of the second type current weight values within the preset time period.
8. The weighing apparatus according to claim 7, wherein said data processing module further comprises a second numerical sub-module, said second numerical sub-module being connected to said second acquisition sub-module;
the second obtaining sub-module is further used for transmitting the current actual weight value to the second numerical measuring sub-module;
the second quantity calculation sub-module is further configured to, when the second obtaining sub-module discards a plurality of first-type current weight values and a plurality of second-type current weight values obtained in the preset time period, obtain a quantity difference value between the commodities on the weighing module in the previous preset time period and the commodities in the next preset time period in the current preset time period according to the current actual weight value in the previous preset time period in the preset time period, the current actual weight value in the next preset time period in the preset time period, and the weight value of a single commodity.
9. An unmanned sales counter comprising the weighing apparatus of any one of claims 5 to 8, and further comprising a display apparatus, the display apparatus being connected to the weighing apparatus;
the display device is used for displaying the quantity difference and the type of the commodities on the weighing module; and calculating the total amount of the commodities according to the quantity difference, the types and the unit price of the commodities, and displaying the two-dimensional code for a user to scan the code for payment.
10. An automated vending method, performed by the automated vending cabinet of claim 9, the automated vending method comprising:
the weighing device acquires the quantity difference of the commodities and transmits the quantity difference to the display device;
the display device displays the quantity difference and the type of the commodities on the weighing module; and calculating the total amount of the commodities according to the quantity difference, the types and the unit price of the commodities, and displaying the two-dimensional code for a user to scan the code for payment.
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| CN113554803B (en) * | 2021-04-21 | 2023-09-29 | 浙江星星冷链集成股份有限公司 | Vending equipment and unmanned vending system |
| CN113670427A (en) * | 2021-08-26 | 2021-11-19 | 深圳诺博医疗科技有限公司 | Weighing self-correcting method, processing module, weighing device and storage medium |
| CN114812768A (en) * | 2022-04-25 | 2022-07-29 | 歌尔股份有限公司 | Weighing method, weighing device and weighing equipment |
| CN116222669B (en) * | 2023-04-23 | 2023-10-24 | 乐山市计量测试所 | Water quality and weight real-time monitoring system and monitoring method of automatic water vending machine |
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| JP2014042577A (en) * | 2012-08-24 | 2014-03-13 | Tanita Corp | Biometric measurement device |
| CN108344481A (en) * | 2017-01-22 | 2018-07-31 | 佛山市顺德区美的电热电器制造有限公司 | The weighing method and weighing device of cooking equipment, cooking equipment and its interior pot |
| KR101887685B1 (en) * | 2018-01-08 | 2018-09-10 | 정진혁 | Vending machine for self service including operating system |
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