JP6203616B2 - Combination counting device - Google Patents

Description

  The present invention relates to a combination counting apparatus that counts articles and performs a combination calculation, and more particularly to a manual combination counting apparatus that manually supplies and discharges articles.

  The combination counting device includes a plurality of weighing units, calculates the number of articles supplied to each weighing unit, performs a number combination calculation, for example, the total number of the combined number of articles in each weighing unit is The combination within the target combination number range or the total number within the target combination number range and the combination closest to the target combination weight is selected as the optimum combination.

  In such a combination counting device, for example, as shown in Patent Document 1, the weight value of an article weighed by each weighing unit is divided by the unit weight, which is a set unit weight per article, to obtain the number. Conversion is performed, and a combination operation is performed according to the number of converted objects. At this time, when there is no weight limit and an upper limit number is set, the weighing unit has an optimum combination of the combination calculation within the range of the target combination number to the upper limit number and is equal to or closest to the target combination number Is selected.

  The articles counted by such a combination counting apparatus are, for example, candy, chocolate, bolts, nuts, injection needles, and the like manufactured with the same standard and having a relatively small variation.

  Even these articles have slight variations in unit weight, and the unit weight may change gradually. For example, in Patent Document 2, the weight of one or a plurality of weighing units, The new unit weight is calculated according to the number of articles converted from the weight of the weighing unit or the plurality of weighing units, and when the calculated new unit weight is within the preset range, the new unit weight is calculated for the next number calculation. A counting method that uses heavy weight is described.

JP-A 61-25027 Japanese Patent Laid-Open No. 58-42930

  The combination weighing device described in Patent Document 1 and Patent Document 2 is a so-called standard product, and is intended for counting articles that are relatively easy to transport with little variation in unit weight. The counting process is performed by an automatic combination counting device that automatically performs discharging and discharging.

  In such an automatic combination counting device, it is difficult to automatically convey in the case of an article having a relatively large variation in single weight, such as fried fish, deep-fried fish, salmon legs, etc. A so-called manual combination counting device that supplies and discharges articles manually is used.

  Since the article processed by the manual combination counting device has a relatively large variation in unit weight, the larger the number of articles supplied to each weighing unit, the larger the error in the calculated number, and the more accurate counting is performed. It becomes difficult.

  If the same number of articles are supplied to all the weighing units and the number combination calculation is performed, the number of articles can be accurately counted, but the setting of the target combination number is limited. For example, if four articles are supplied to all the weighing units, what can be set as the target combination number is limited to a multiple of four.

  In order to cope with various target combination numbers, it is necessary to allow each weighing unit to supply various numbers of articles.

  The present invention has been made in view of the above points, and provides a manual combination counting device capable of accurate counting combination even for articles having a relatively large variation in single weight. With the goal.

  In order to achieve the above object, the present invention is configured as follows.

(1) The combination counting device according to the present invention calculates the number of articles manually supplied to a plurality of weighing units for each of the weighing units, performs a combination calculation, and is selected by the combination calculation. A combination counting device for manually discharging the article of the weighing unit,
A number calculating unit that calculates the number of articles based on the weight of the article that is weighed by the measuring unit, and an arithmetic control unit that performs the combination calculation based on the number of articles calculated by the number calculating unit. And
The calculation control unit prohibits participation in the combination calculation for the weighing unit that is determined that the number of articles is not accurately calculated by the number calculation unit ,
A notifying unit capable of individually informing a plurality of weighing pans constituting the plurality of weighing units; and the weighing pan supplied to the weighing pan prohibited from participating in the combination calculation by the calculation control unit. An input unit for inputting the number of articles placed on the plate;
The calculation control unit controls the notification unit to notify the weighing pan that prohibits participation in the combination calculation,
The calculation control unit cancels the prohibition of participation in the combination calculation on the assumption that the number of articles input by the input unit is the number of articles in the weighing pan prohibited from participating in the combination calculation. It is.

  According to the combination counting apparatus of the present invention, in the manual combination counting apparatus that manually supplies and discharges articles, the weighing unit that is determined to be unable to calculate the number of articles accurately is not allowed to participate in the combination calculation. Thus, it is possible to perform a counting combination calculation with an accurate number.

  An operator manually places an article on a plurality of weighing pans constituting a plurality of weighing units, and manually removes the article from the weighing pan selected by the combination calculation.

  The notification unit may be notified by a display lamp or the like, a screen display by the display unit, or voice, or a combination thereof.

According to the present invention, when a weighing pan that has been determined that the number of articles is not accurately calculated and is prohibited from participating in the combination calculation is notified by the notification unit, the operator is placed on the weighing pan. The number of articles that are present is confirmed visually, and the number is input by operating the input unit. Thereby, since the number of articles placed on the weighing pan is determined, the prohibition of the combination calculation can be canceled and the combination calculation can be entered.

(2) In another embodiment of the combination counting apparatus of the present invention, it includes a work instruction unit that instructs the tasks to an article which is supplied to the weighing pan, by the input unit the number of articles placed on the weighing pan The number input method to be input can be set in advance, and when the number input method is set in advance, the arithmetic control unit determines that the number of articles input by the input unit is participating in the combination calculation. While the prohibition of participation in the combination calculation is canceled assuming that the number of articles on the weighing pan is prohibited, the combination instruction is controlled by controlling the work instruction unit when the number input method is not preset. be one that instructs the tasks for participants is supplied to the weighing pan banned article to the task of the instruction, reduce some of the articles of a plurality of articles supplied to the weighing pan Work, work and supplies to reduce the portion of the article of the plurality of articles supplied to the weighing pan to another weighing pan, the new part of the article of the plurality of articles supplied to the weighing pan work to be replaced with an article, and a part of an article of the plurality of articles supplied to the weighing pan, at least one of the work of the work to be replaced with articles other weighing pan.

  The work instructing unit may instruct the work by a display in which the lighting state of the color or the like is changed by an indicator lamp or the like, a screen display by the display unit, a voice, or the like, or a combination thereof. The work instruction unit and the notification unit may be used in combination to notify the weighing unit prohibited from participating in the combination calculation, and to instruct the work on the article supplied to the measurement unit.

According to this embodiment, for the weighing unit that is determined that the number of articles is not accurately calculated and forbidden to participate in the combination calculation, when the number input method is not preset, the work instruction unit causes the weighing unit to Therefore, according to the instruction, the worker may, for example, reduce or divide some of the plurality of articles in the weighing unit that are prohibited from participating in the combination calculation. It can be exchanged and work efficiency is improved.

In another embodiment of the combination counting device of the present invention, the number calculating unit includes a weight value of the article to be weighed by the weighing unit, an assumed maximum weight value and an assumed minimum value per article. Based on the weight value, the number of the articles is calculated.

  According to this embodiment, based on an assumed maximum weight value and an assumed minimum weight value per article, a maximum weight value and an assumed minimum weight value assumed when there are two articles, Assumed maximum weight value and assumed minimum weight value when there are three articles, assumed maximum weight value and assumed minimum weight value when there are a plurality of articles, that is, the number of articles Since each weight range can be assumed, the number of articles can be calculated depending on which of the assumed weight ranges the weight value of the article weighed by the weighing unit belongs to.

  Further, for example, when the weight value of the article weighed by the weighing unit does not belong to any of the assumed weight ranges, it can be determined that the number is not accurately calculated.

In another embodiment of the present invention, the number calculation unit converts the assumed maximum weight value and the assumed minimum weight value per article into an average value and a standard deviation of the weight of the article. You may make it calculate based on.

  If the weight of the article is normally distributed, according to this embodiment, the average value and the standard deviation of the article are used to calculate the assumed maximum weight value and the assumed minimum weight value per article. .

In another embodiment of the combination counting device of the present invention, the number calculating unit divides the weight of the article to be weighed by the weighing unit by the average value of the weight per one article to obtain the number of articles. The calculation control unit calculates the maximum number of articles that can be determined that the number of articles calculated by the number calculation unit is accurate or the maximum weight of articles corresponding to the maximum number. Calculate based on the average value and standard deviation of the weight per piece, and determine whether the number of articles is accurately calculated by the number calculation unit based on the calculated maximum number or the maximum weight To do.

  According to this embodiment, in the arithmetic and control unit, based on the average value and standard deviation of the weight per item, the maximum number or maximum number of items that can be determined that the number of items calculated by the number calculating unit is accurate. The maximum weight corresponding to the number is calculated, and using this maximum number or the maximum weight, for example, when the number of articles calculated by the number calculation unit exceeds the maximum number, it is determined that the number is not accurately calculated. In addition, when the weight of the article weighed by the weighing unit exceeds the maximum weight, it is determined that the number of articles calculated by the number calculating unit is not accurate, and participation in the combination calculation can be prohibited. .

In another embodiment of the present invention, the number calculating unit is configured to calculate the average weight per article based on a weight value of a sample article that is manually supplied to the weighing unit. The value and the standard deviation may be calculated.

  According to this embodiment, prior to the operation of the combination counting device, the average value and the standard deviation of the weights of the articles are calculated by measuring the weight of each of the sample articles obtained by sampling a predetermined number of articles. can do.

In another embodiment of the combination counting device of the present invention, the combination counting device further includes an allowable maximum number notification unit that notifies an allowable maximum number of articles allowed to be supplied to each of the plurality of weighing units, and the arithmetic control unit includes the number In order to reduce the number of weighing units determined by the calculation unit not to be accurately calculated, the allowable maximum number is calculated and the allowable maximum number notification unit is controlled to notify the allowable maximum number .

  When the number of articles to be counted increases, the counting error increases, and the number of weighing units determined that the calculated number of articles is not accurate increases. According to this embodiment, the supply to the weighing unit is not performed. The maximum allowable number of articles allowed is notified by the maximum allowable number notification unit, so that the number of articles can be accurately calculated by supplying the number of articles less than the maximum allowable number to the weighing unit by the operator. It is possible to reduce the number of measuring units that are determined not to be performed, and to increase work efficiency.

In still another embodiment of the combination counting device of the present invention, the combination counting apparatus further includes an article number instruction unit that indicates the number of articles to be reduced among the plurality of articles supplied to the weighing unit, and the calculation control unit includes the combination control unit. For the measuring unit prohibited from participating in the calculation, the number of articles to be reduced is calculated, and the number of articles to be reduced is instructed by controlling the article number instruction unit.

  The article number instruction unit may instruct the number of articles to be reduced by display using an indicator lamp, screen display by the display unit, voice, or the like, or a combination thereof.

  According to this embodiment, since the number of articles supplied to the weighing unit is large, it is determined that the number calculating unit cannot accurately calculate the number of articles, and for the weighing unit prohibited from participating in the combination calculation, Since the number of articles to be reduced is instructed by the article number indicating unit, the operator removes the number of articles instructed from the measuring unit according to the instruction, so that the number of articles in the measuring unit is accurate. It is possible to participate in the combination calculation as calculated in the above, thereby improving work efficiency.

  According to the present invention, in the manual combination counting apparatus, since the weighing unit that cannot accurately calculate the number of articles is not allowed to participate in the combination calculation, an accurate counting combination is possible.

FIG. 1 is a perspective view of a combination counting device according to an embodiment of the present invention. FIG. 2 is a block diagram of the combination counting apparatus of FIG. FIG. 3 is a flowchart showing the operation of the combination counting apparatus. FIG. 4 is a diagram showing the weight distribution of each aggregate article composed of 1 to (N + 1) articles.

  Hereinafter, embodiments of the present invention will be described in detail.

[Embodiment 1]
FIG. 1 is a perspective view of a combination counting device according to one embodiment of the present invention.
The combination counting device 1 of this embodiment is a manual combination counting device that manually supplies and discharges articles, and includes a plurality of weighing dishes 2 on which articles are placed, and a frame portion that supports the weighing dishes 2 and the like. 3 and a control unit 4 for performing various settings and displays.

  Each weighing pan 2 is supported by each load sensor (not shown) below the weighing pan 2, and each weighing pan 2 and each load sensor constitute a weighing unit for weighing an article placed on each weighing pan 2. In each weighing pan 2, a total of 12 plates are arranged on the left and right sides of the frame portion 3, 6 plates each. Since this combination scale 1 is a manual type, an operator directly loads and unloads articles on each weighing pan 2.

  Twelve combination lamps 5 made of LEDs or the like are installed in the central portion of the frame portion 3 so as to individually correspond to the weighing pan 2 along the front-rear direction. When the combination lamp 5 is lit in green, the operator recognizes an article that has been selected as the optimum combination (to be ejected) after the combination calculation is established, or recognizes the necessity for replacement of the article by lighting in red. can do. In the center on the rear side of the frame part 3, a reset button 6 is provided for causing the combination to be recalculated.

  The control unit 4 is located in front of the frame unit 3, and a display unit 7 is provided on the front surface thereof. The display unit 7 displays a screen for setting combination conditions and the like, a screen for combination calculation results, and the like. Since the touch panel is employed in this embodiment, the surface portion of the display unit 7 is the input unit 8. With this input unit 8, it is possible to set a combination condition and the like. The combination condition includes a target combination number and a target combination weight value. In this embodiment, the display unit 7 and the input unit 8 are integrated, but the display unit 7 and the input unit 8 may be configured separately.

  FIG. 2 is a block diagram of the combination counting apparatus 1 in FIG. 1, and parts corresponding to those in FIG. 1 are denoted by the same reference numerals.

  As described above, each weighing pan 12 and each load sensor 11 that supports each weighing pan 2 constitute each weighing unit 12 that weighs the weight of an article placed on each weighing pan 2.

  The control unit 4 includes an arithmetic control unit 9 and a memory 10, and also includes the display unit 7 and the input unit 8 described above. The arithmetic control unit 9 and the memory 10 are configured by, for example, a microcomputer. The arithmetic control unit 9 of the control unit 4 performs the following arithmetic control. That is, the weight of the article is calculated based on the load signal from the load sensor 11 of each weighing unit 12, and the calculated weight is stored in the memory 10. Further, based on the calculated weight of the article, the number of articles is calculated as described later, and a combination calculation is performed. In this combination calculation, for example, the total number obtained by combining the number of articles on each weighing pan 2 is the target combination number, and the combination whose combined total weight is closest to the target combination weight is selected as the optimum combination.

  The combination lamp 5 corresponding to the weighing pan 2 selected as the optimum combination is lit in green. The operator lowers the articles of the weighing pan 2 of the optimum combination whose combination lamp 5 is lit in green, and packs them together in, for example, one bag.

  The article to be counted is not particularly limited, but an article that has a relatively large variation in unit weight, which is a single unit weight per article, and cannot be automatically supplied to the combination weigher in an irregular shape, such as a fish fry, Goods such as deep-fried chicken or salmon legs are preferred.

  In this embodiment, in order to enable accurate counting and combination even for an article having a relatively large variation in unit weight, the following configuration is provided.

  That is, the arithmetic control unit 9 as the number calculating unit calculates the number of articles on the weighing pan 2 based on the weight of the articles on the weighing pan 2, but at that time, the number is not accurately calculated. For the weighing pan 2 determined to be, the combination calculation is performed based on the number of articles on the weighing pan 2 determined to be accurately calculated without participating in the combination calculation.

  Then, the weighing pan 2 that determines that the number of articles is not accurately calculated and does not participate in the combination calculation is processed as follows.

  In other words, the display unit 7 of the control unit 4 displays a number or the like for specifying the weighing pan 2 determined that the number of articles cannot be accurately calculated, and determines that the number of articles cannot be accurately calculated for the operator. The weighing pan 2 is notified. Thereby, the operator visually confirms the number of articles on the weighing pan 2 and operates the input unit 8 of the control unit 4 to input the number of articles placed on the weighing pan 2. .

  Alternatively, it is determined that the number of articles is not accurately calculated, and the combination lamp 5 corresponding to the weighing pan 2 that is not allowed to participate in the combination calculation is lit in red to notify the operator that the number cannot be calculated. As a result, the operator reduces a part of the article on the weighing pan 2 corresponding to the combination lamp 5 that is lit in red, or divides the article on the corresponding weighing dish 2 to empty the part. Is transferred to the weighing pan 2 or exchanged with a part of the article on the other weighing pan 2. A specific work, for example, a part of the article on the corresponding weighing pan 2, depending on the lighting state such as the lighting color of the combination lamp 5 as the work instruction unit or the display of the control unit 4 as the work instruction unit. Work to divide the article on the corresponding weighing pan 2 and transfer it to an empty weighing pan 2, or to exchange a part of the article on the corresponding weighing pan 2 and the other weighing pan 2 May be instructed.

  In this embodiment, when adopting the number input method in which the operator inputs the number of articles on the weighing pan 2 that has been determined that the number of articles cannot be accurately calculated as described above, the operator 4 can be selected in advance by operating the input unit 8.

  As described above, since the weighing pan 2 determined to be unable to calculate the number of articles accurately is not allowed to participate in the combination calculation, the combination calculation based on the correct number is performed, and the correct number of articles selected by the combination calculation is performed. Can be removed from the weighing pan 2 and packaged.

  For the weighing pan 2 determined that the number of articles cannot be calculated accurately, the operator inputs the exact number of articles on the weighing pan 2 or replaces a part of the articles. Thus, the number of articles can be accurately calculated, and it is possible to participate in the combination calculation.

  Next, calculation of the number of articles according to this embodiment will be described.

  In this embodiment, an assumed maximum weight value and an assumed minimum weight value per article to be counted are obtained in advance. Since the weight of an article is considered to be normally distributed, a predetermined number of articles to be counted, for example, several tens, are sampled and the weight of the sample article is measured, and the average value μ and the standard deviation σ of the weight of the article are obtained. Ask.

  Based on the average value μ and the standard deviation σ, the assumed maximum weight value and minimum weight value per article are set to, for example, μ + 2σ and μ−2σ based on the average value μ. The assumed maximum weight value and minimum weight value are not limited to μ + 2σ and μ−2σ, but may be μ + 3σ, μ−3σ, and others.

  The assumed maximum weight value and minimum weight value per article may be set by operating the input unit 8 of the control unit 4 of the combination counting device 1, or the average value μ and the standard value may be set. The deviation σ and the like may be set by operating the input unit 8.

  Alternatively, the input unit 8 of the combination counting device 1 is operated to set a sampling mode for calculating an average value and a standard deviation, and a known number of samples to be counted are sampled on each weighing pan 2. For example, by repeating the operation of placing one by one and weighing the weight of one of the sample articles until a predetermined number is reached, the control calculation unit 9 automatically causes the average value μ and the standard deviation of the articles σ may be calculated, and the assumed maximum weight value and minimum weight value may be calculated.

  Based on the assumed maximum weight value and minimum weight value per article obtained in this way, the number of articles on the weighing pan 2 is calculated as follows.

  That is, from the assumed maximum weight value and minimum weight value per article, the weight range of one article is assumed to be a weight range between the minimum weight value and the maximum weight value, and the weight range of two articles. Is assumed to be a weight range of not less than twice the minimum weight value and not more than twice the maximum weight value, and the weight range of three articles is defined as a weight range of not less than three times the minimum weight value and not more than three times the maximum weight value. In the following description, similarly, the weight range of n articles is assumed to be a weight range not less than n times the minimum weight value and not more than n times the maximum weight value.

  For example, if the assumed minimum weight value per article is 10 g and the maximum weight value is 12 g, the weight range of one article is assumed to be 10 to 12 g, and the weight range of two articles is 20 g. It is assumed that the weight range of the three articles is 30 g to 36 g, the weight range of the four articles is assumed to be 40 g to 48 g, and the weight range of the five articles is 50 g to 60 g. It is assumed.

  In this way, from the assumed maximum weight value and minimum weight value per article, each weight range corresponding to each number of articles is assumed, so the weight of the article placed on the weighing pan 2 is The number of articles is determined according to which weight range it belongs to.

  For example, in the above example, if the weight of an article placed on the weighing pan 2 is 43 g, for example, and belongs to a weight range of 40 g to 48 g, the number of articles is calculated as four. It is.

  Further, when the weight of the article placed on the weighing pan 2 does not belong to any of the weight ranges corresponding to the number of articles, it is determined that the number of articles cannot be accurately calculated. The weighing pan 2 is not allowed to participate in the combination calculation as described above.

  Further, when the number of articles increases, a weight range that overlaps each weight range corresponding to each number of articles occurs.

  For example, in the above example, the weight range of five articles is assumed to be 50 g to 60 g, the weight range of six articles is assumed to be 60 g to 72 g, and the weight range of seven articles is 70 g to 84g is assumed. Accordingly, for example, in 70 g to 72 g, the six weight ranges and the seven weight ranges overlap, and it is impossible to accurately calculate whether the number is six or seven. Therefore, when the weight of the article placed on the weighing pan 2 is in the overlapping weight range, it is determined that the number of articles cannot be accurately calculated, and the weighing pan 2 is not allowed to participate in the combination calculation.

  When starting the operation, the maximum number of articles that do not overlap in the weight range is set as the allowable maximum number of articles that are allowed to be supplied to the weighing pan 2. May be displayed on the display unit 7 so as to notify the operator not to place the article on the single weighing pan 2 beyond the maximum allowable number.

  In the above example, when six articles of 10 g which is the minimum weight are placed, the weight becomes 60 g, but it overlaps with 60 g when five articles of 12 g which are the maximum weight are placed. If the total weight of the five articles placed is 60 g, it cannot be distinguished from the case where six articles of 10 g which is the minimum weight are placed.

  Therefore, when the maximum allowable number of articles allowed to be placed on the weighing pan 2 is 5, and the weight is 60 g or more, it is determined that the number is not accurately calculated, and the allowable maximum weight is less than 60 g. And Therefore, although the probability is very low, if the weight when 5 pieces are mounted is 60 g, it is determined that the number cannot be accurately calculated by giving priority to the weight over the number, and is not allowed to participate in the combination calculation.

  This allowable maximum number may be displayed on the display unit 7 of the control unit 4. Or you may display by providing a numerical indicator in the operation | work instruction | indication part corresponding to each weighing pan 2 individually.

Generally speaking, if the maximum value of the weight of one article is Wa and the minimum value is Wi,
Since the total weight of N articles of the maximum weight should not be larger than the total weight of N + 1 articles of the minimum weight, accurate counting can be performed if Wa · N <Wi · (N + 1) is satisfied. .

  Therefore, N <Wi / (Wa-Wi) may be satisfied. That is, N may be an integer less than {Wi / (Wa−Wi)}. In the above case, the maximum allowable number Nc is an integer satisfying N <5 (an integer less than 5), and thus Nc = 4.

  Therefore, the allowable maximum number may be four instead of five. In this case, the allowable maximum weight Wc is less than 60 g because Wc <(Nc + 1) · Wa = 60 g.

  As another example, in an article having a maximum value Wa = 13 g and a minimum value Wi = 10 g of one article, the total weight is 52 g when four maximum weight articles are arranged, and 50 g when five minimum weight articles are arranged. Yes, even though 5 articles are placed, it is still 2 g lighter than 52 g in the case of placing 4 articles of maximum weight.

  When this is applied to the above general formula, N <10/3 = 3.33 and Nc is an integer satisfying N <3.33, so Nc = 3, and the allowable maximum weight is Wc <4 × 13 = If it is less than 52g, it will suffice.

If a total of 70 g articles are placed by mistake, the number M that needs to be removed from the weighing pan is:
M> (current weight−allowable maximum weight) / (minimum weight of the article)
Is an integer that satisfies.
In the above case, since M> (70-60) / 10 = 1, it is necessary to remove two integers that satisfy this equation.

  If a total of 69 g articles are placed, M is an integer that satisfies M> (69−60) /10=0.9, and thus one may be removed.

  In addition, the number to be removed is displayed on the display unit 7 of the control unit 4 as an article number instruction unit together with the number of the weighing pan, or a numerical indicator corresponding to each weighing conveyor tray 2 is provided for display. May indicate the number to be removed.

  In addition, you may make it alert | report the permissible maximum weight of the articles | goods allowed with the maximum allowable number of articles | goods or instead of the maximum allowable number of articles | goods. In this case, the allowable maximum weight may be, for example, less than a value obtained by multiplying the allowable maximum number Nc + 1 by the maximum weight value assumed per article.

  In the present embodiment, as described above, the weight of the article placed on the weighing pan 2 is one of the weight ranges corresponding to the number of the articles, and the weight range does not overlap. The number of articles corresponding to the weight range is calculated as the number of articles, and the number of articles does not belong to any of the above weight ranges or is in an overlapping weight range. It is determined that it cannot be calculated.

  Next, the operation of the combination counting apparatus of the present embodiment will be described in detail based on the flowchart of FIG.

  The operator manually supplies and places a plurality of articles on the empty weighing pan 2. First, the weight of the articles on the plurality of weighing dishes 2 is measured (step n1), and the number of articles on each weighing dish 2 is calculated as described above (step n2).

  Next, it is determined whether or not there is a weighing pan 2 whose number is unknown, that is, a weighing pan 2 that is determined to be unable to accurately calculate the number (step n3), and the determination that the number cannot be accurately calculated. When there is no dish 2, the process proceeds to step n6. In step n3, when there is a weighing pan 2 that is determined that the number cannot be accurately calculated, it is determined whether or not the number input method is set (step n4), and when the number input method is set. The display for specifying the weighing pan 2 for which it is determined that the number cannot be accurately calculated is performed on the display unit 7 of the control unit 4 (step n5), and the process proceeds to step n6. As a display for specifying the weighing pan 2, for example, in the layout display of 12 weighing pans 2, the corresponding weighing pan 2 may be specified, or the number of the weighing pan 2 may be specified. .

  The operator visually confirms the number of articles placed on the weighing pan 2 specified by the display on the display unit 7 of the control unit 4 and operates the input unit 8 of the control unit 4 to input the number. To do.

  When the number input method is not set in step n4, the combination lamp 5 corresponding to the weighing pan 2 determined that the number cannot be accurately calculated is lit in red (step n11), and the process proceeds to step n6. The operator can reduce a part of the article on the weighing pan 2 corresponding to the combination lamp 5 lit in red, divide a part of the article on the weighing dish 2 and place it on the empty weighing dish 2, Alternatively, when there are a plurality of weighing pans 2 in which the combination lamp 5 is lit in red, an operation such as exchanging some of the articles is performed.

  In step n6, it is determined whether or not it is the timing of the count combination calculation. If it is not the timing of the count combination calculation, the process returns to step n1, and if it is the timing of the count combination calculation, the count combination calculation is performed (step n7).

  In this counting combination calculation, the number of weighing pans 2 whose number is accurately calculated is combined. For example, the total number of combinations is the target combination number, and the combined total weight is the closest to the target combination weight. Select as the optimal combination.

  In the counting combination calculation, it is determined whether or not there is an optimum combination (step n8). If there is no optimum combination, it is determined whether or not articles are placed on all weighing pans 2 (step n9). If not, the process returns to step n1, and when articles are placed on all weighing pans 2, the display unit 7 of the control unit 4 displays on the display unit 7 to replace the articles on the weighing pan 2 and returns to step n1 ( Step n10).

  If there is an optimum combination in step n8, the combination lamp corresponding to the weighing pan 2 selected as the optimum combination is lit in green, and the process returns to step n1 (step n12). The operator unloads the article on the weighing pan 2 selected for the optimal combination.

  As described above, according to the present embodiment, since the weighing pan 2 determined that the number of articles cannot be accurately calculated is not allowed to participate in the combination calculation, the combination calculation based on the accurate number is performed and selected by the combination calculation. The correct number of articles can be lowered from the weighing pan 2 and packaged.

  For the weighing pan 2 that is determined to be unable to accurately calculate the number of articles, the operator inputs the correct number of articles, the article is newly placed, or a part of the article is replaced. Therefore, it is possible to accurately calculate the number of articles and to participate in the combination calculation.

  In the above embodiment, the number of articles on the weighing pan 2 is calculated based on the assumed maximum weight value and minimum weight value per article, but the calculation of the number is not limited to this. For example, the weight of the article on the weighing pan 2 is divided by the average value of the single unit weight per article. Conventionally, the first decimal place of the quotient obtained by division is rounded off, that is, rounded down if it is less than 0.5, rounded up if it is 0.5 or more, but is rounded off to the first decimal place. For example, it is rounded down to a numerical value of 0.4 or less, for example, rounded up to a numerical value of 0.6 or more to obtain the number, and the first decimal place exceeds the numerical value of 0.4 or less and the numerical value of 0.6 or more. If it is less than the number, it may be determined that the number is not accurately calculated.

  The article to be counted is not limited to the above, and may be, for example, agricultural products such as carrots, onions, and potatoes, or raw meat such as broilers.

[Embodiment 2]
In the above embodiment, the weight value of a plurality of articles weighed in each weighing pan 2 is divided by the average weight value which is a unit weight per article, and the number of articles is calculated by rounding off the first decimal place. Although not calculated, in this embodiment, as in the conventional example, the weight value of a plurality of articles is divided by the average weight value per article, and the number is calculated by rounding to the first decimal place. To do.

  In this embodiment, based on the following statistical numerical values, it is determined whether or not the calculated number of articles is accurately calculated, and it is determined that the number is not accurately calculated. Sometimes, as in the above embodiment, participation in the combination calculation is prohibited.

  Here, it is assumed that the weight of the article to be counted is normally distributed with a standard deviation σ = σ <1> and an average weight value μ.

When the total weight of the articles when a plurality of articles are placed on the weighing pan is Wx, the number N is calculated by N = W / μ and rounded off to calculate the number.

  This is based on the idea that Nx articles having an average weight μ are gathered to give a total weight of Wx.

  However, the weight of one article has a variation with respect to the average value, and the amount of variation in the weight of the collective article increases as the number increases.

  FIG. 4 is a diagram showing the weight distribution of each aggregate article composed of 1 to (N + 1) articles. As shown in FIG. 4, if the weights of the articles are distributed, the amount of variation with respect to the average weight μ increases as the number of articles increases.

  If the value of 3 · σ <N>, which is a 3 sigma value of the weight of N collective articles, is equal to or less than (½) · μ, it is defined that up to N pieces can be accurately counted. In order to count more accurately, 3.5 sigma and 4 sigma values may be set.

If the standard deviation of one article is σ <1>, the standard deviation σ <N> of N collective articles is
σ <N> = (N) ^1/2 · σ <1>
Because it is calculated,
3 · σ <N> = 3 · (N) ^1/2 · σ <1>
And
3 ・ (N) ^1/2・ σ <1> ≦ (1/2) ・ μ ・ ・ ・ ・ ・ ・ ・ ・ （1）
N obtained from the above equation (1) is the maximum number Nmax that can be counted, that is, {Nmax + (1/2)} · μ is the maximum weight that can be counted. The maximum number Nmax that can be counted is the maximum integer that satisfies the above equation (1).

  If this number or weight is exceeded, it is determined that the number cannot be accurately calculated, and participation in the combination calculation is prohibited.

  The average value μ and the standard deviation σ <1> of the article weight may be set directly by the operator by operating the input unit 8 of the control unit 4 as in the above embodiment, or set the sampling mode. The article to be counted may be acquired by sampling measurement. The maximum number Nmax that can be counted is calculated from the above equation (1) using the average value μ and the standard deviation σ <1> of the weights of the acquired articles.

In this embodiment, as in the conventional example, the weight value of a plurality of articles weighed on each weighing pan is divided by the average weight μ per article, and the first decimal place is rounded off to the number of articles. Are calculated respectively. If the calculated number is equal to or less than the maximum number Nmax, it is determined that the number of articles has been accurately calculated and participates in the combination calculation. On the other hand, when the calculated number exceeds the maximum number Nmax, the number of articles is It is determined that it has not been calculated accurately, and participation in the combination calculation is prohibited.

The processing for the weighing pan that is prohibited from participating in the combination calculation is the same as that in the above embodiment, but basically it is preferable to instruct the operator to reduce the number of articles on the weighing pan .

  Others are the same as that of the said embodiment.

DESCRIPTION OF SYMBOLS 1 Combination counter 2 Weighing pan 4 Control unit 5 Combination lamp 7 Display part 8 Input part 9 Calculation control part

Claims (2)

The number of articles supplied manually to a plurality of weighing units is calculated for each weighing unit to perform a combination calculation, and the items in the weighing unit selected by the combination calculation are discharged manually. A combination counting device,
A number calculating unit that calculates the number of the articles based on the weight of the article weighed by the weighing unit;
A calculation control unit that performs the combination calculation based on the number of articles calculated by the number calculation unit;
The calculation control unit prohibits participation in the combination calculation for the weighing unit that is determined that the number of articles is not accurately calculated by the number calculation unit ,
An informing unit capable of informing individually corresponding to the plurality of weighing pans constituting the plurality of weighing units;
An input unit that inputs the number of articles that are supplied to and placed on the weighing pan that is prohibited from participating in the combination calculation by the calculation control unit;
The calculation control unit controls the notification unit to notify the weighing pan that prohibits participation in the combination calculation,
The calculation control unit cancels the prohibition of participation in the combination calculation, assuming that the number of articles input by the input unit is the number of articles of the weighing pan prohibited to participate in the combination calculation.
A combination counting device. A work instruction unit for instructing work on the articles supplied to the weighing pan
The number input method for inputting the number of articles placed on the weighing pan by the input unit can be set in advance.
When the number input method is preset, the calculation control unit assumes that the number of articles input by the input unit is the number of articles in the weighing pan prohibited from participating in the combination calculation. While the prohibition of participation in the combination calculation is canceled, when the number input method is not preset, the work instruction unit is controlled and supplied to the weighing pan prohibited from participating in the combination calculation. Instructing an operation on an article, wherein the instructing operation is an operation of reducing a part of articles among the plurality of articles supplied to the weighing pan, of the plurality of articles supplied to the weighing pan. The operation of reducing some of the articles and supplying them to another weighing pan, the operation of exchanging some of the plurality of articles supplied to the weighing pan with new articles, and supplying the weighing pan Of a plurality of articles The portion of the article, at least one of the work of the work to be replaced with articles other weighing pan,
The combination counting device according to claim 1.

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