JP2013231614A - Weighing apparatus and weighing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform weighing operation in the fixed quantity without relying on experience and intuition.SOLUTION: Only by packing and weighing the weighed objects already divided by rank with a little slight amount to target weight, the weighed objects required to reach the target weight are indicated on the basis of weight ranking and a relative size in the weight ranking by lamps 22a to 22c of display units 20a to 20c. An operator completes combination of the weighed objects reaching the target weight by selecting the weighed objects of the indicated size from the indicated weight ranking and adding them.

Description

  The present invention relates to a weighing device that measures the weight of an object to be weighed and a weighing system using the same, and more specifically, suitable for bagging such that the total weight of a plurality of objects to be weighed becomes a fixed amount. The present invention relates to a weighing device and a weighing system.

  2. Description of the Related Art Conventionally, in retail stores such as supermarkets, products such as agricultural products purchased by boxing are subdivided in order to sell them at the store, for example, a fixed amount of bagging work is performed such as how many kg in several pieces.

  In such a bagging operation, several items are taken out from a large number of items and placed on a single scale, and a combination of items to be quantified is selected. For example, the weight of the last item to be loaded is selected. Depending on the situation, it is not easy to determine the quantity, and based on experience and intuition, there are many cases in which weighing is repeated many times by replacing with other articles, and there is a problem that it takes a lot of labor for the weighing.

  For this reason, Patent Reference 1 discloses a combination weighing shelf as a combination weighing system for taking out an article having a constant weight. This combination weigher shelf has storage units arranged in a grid, and each storage unit is a storage detection sensor that detects that an object to be weighed is stored, and a selected storage unit. And a display unit for displaying whether or not.

  In use, first, the weight of the object to be weighed is weighed by the weighing unit. The weighed objects are temporarily stored in the storage units. The control unit performs combination calculation using the weight of the objects to be weighed stored in each storage unit, selects a combination of storage units whose total weight satisfies a predetermined condition, and displays the display unit of the selected storage unit To that effect. The operator can create a bag with a constant weight by collecting the objects to be weighed in the storage unit displayed and putting them in a bag.

Japanese Utility Model Publication No. 7-42487

  However, in the conventional configuration of Patent Document 1, since the objects to be weighed are stored one by one or one unit at a time in the storage unit, it is necessary to newly put the objects to be weighed in the storage unit every time the objects to be weighed are taken out. As described above, the worker must temporarily store the object to be weighed in the storage unit, take out the stored object to be weighed from the storage unit, and there is a problem that work efficiency is poor.

  An object of the present invention is to enable a quantitative measurement operation to be performed efficiently without relying on experience or intuition.

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

  (1) A weighing device according to the present invention is a weighing device that has a placing portion on which an object to be weighed is placed, and measures the weight of the object to be weighed placed on the placing portion. A setting that includes a storage unit in which rank information including a plurality of weight ranks of an object and a weight range of each weight rank is stored in advance, and setting information including a target weight obtained by totaling the weights of the plurality of objects to be weighed. And the weight of the object placed on the placing part, the setting information and the rank information, the weight of the object placed on the placing part reaches the target weight. A control unit that controls the indicating unit to indicate an object to be added to the placement unit when there is not, and the control unit controls the indicating unit to add the weighing object to be added. In addition to indicating the weight rank of an object, the weight of an object to be added in the weight rank To instruct specified to.

  In the rank information, in addition to the weight rank and the weight range of the weight rank, an item name of an object to be weighed may be included.

  The setting information may include an allowable value in addition to the target weight.

  The relative designation of the weight of the object to be weighed in the weight rank refers to the relative designation of the weight value of the object to be weighed in the weight range of the weight rank. For example, the weight range is divided into three. Depending on whether the weight value of the object to be weighed belongs to one of the three weight ranges, it can be designated as relatively heavy, medium (normal) or light, or five of the above weight ranges. In other words, relative designations such as very heavy, heavy, medium (ordinary), light, and very light. In this case, the weight is proportional to the size so that it can be easily understood by the worker who performs the weighing work. For example, the weight is indicated as heavy, medium (normal), or light as large, medium, or small. It is preferable to do this.

  The weighing device may be configured to include an instruction unit, or the instruction unit may be provided separately from the weighing device. In this case, the weighing device and the instruction unit are controlled so that the control unit of the weighing device can control the instruction unit. It is preferable to connect the means by wire or wirelessly.

  The instruction means only needs to be able to instruct the object to be added. For example, the instruction means may instruct by lighting the indicator lamp or displaying the display unit, may be instructed by voice, or may be instructed by combining them. May be.

  According to the weighing device of the present invention, when the operator places the object to be weighed on the placing unit with a small amount with respect to the target weight, the weight of the object to be weighed to be added to the target weight by the instruction means. The rank is indicated, and the weight of the object to be weighed in the weight rank is relatively indicated, for example, large, medium, and small.

  As a result, the operator can visually select a weighing object with a specified relative weight from the weighing objects with a specified weight rank and add it to the mounting section, thereby allowing the weighing object to reach the target weight. A combination of objects is completed, and this combination of objects to be weighed may be packaged.

  Thus, the weight rank of the object to be weighed and the relative weight in the weight rank are instructed so that the weight of the plurality of objects to be weighed becomes the target weight. Place an object to be weighed that is smaller than the weight roughly on the placement unit, and select the object to be weighed with the designated relative weight, and place it on the placement unit. It's okay. Therefore, it is not necessary for the operator himself to determine the weight rank of the object to be added and the size of the object to be added, and it is easy to select the object to be added regardless of experience or intuition. A combination of objects to be weighed as a target weight can be completed, and work efficiency is improved.

  (2) In a preferred embodiment of the weighing apparatus according to the present invention, the control unit applies one of the plurality of weight ranks of the weighing object to the weighing object placed on the placing part. By adding pieces, when the target weight is reached, the one object to be added is indicated by controlling its indicating means and its weight rank and the relative weight in the weight rank. .

  The control unit can obtain the weight of the object to be added based on the weight of the object to be weighed placed on the placing part and the target weight, and the object to be weighed is stored in advance. Based on the weight ranks of each of the weight ranks and the weight range of each weight rank, it can be determined whether or not only one object to be added is required, so that only one object to be added has been added. Sometimes, the single object can be indicated by its weight rank and the relative weight at that weight rank.

  When there are two or more objects to be weighed, for example, the weight rank of each of the two or more objects to be weighed and the relative weight in the weight rank may be indicated. Alternatively, until one object to be weighed is added, for example, it may be instructed to add the objects to be weighed with the heaviest weight rank one by one.

  According to this embodiment, the operator only needs to place an object to be weighed on the placing part that is smaller than the target weight, preferably not enough for one object to be weighed on the target weight. The weight rank of one object to be weighed is indicated, and the relative weight in the weight rank, for example, large, medium, and small is indicated, and one object is selected according to the instruction. The combination of objects to be weighed can be completed simply by adding them.

  (3) In another embodiment of the weighing device of the present invention, the objects to be weighed in the plurality of weight ranks are stored in a plurality of containers for each weight rank, and the instruction means is in each of the plurality of containers. A plurality of display units individually arranged corresponding to each other, the display unit having a display unit that relatively displays the weight of the object to be added, and the control unit includes the instruction unit; By controlling the means, the display unit corresponding to the weight rank of the object to be added indicates the weight rank of the object to be added and relatively indicates the weight.

  The container may be any container that can hold an object to be weighed, and may be a box, a bag, a tray, a container, or the like.

  Since the objects to be weighed are stored in each of the plurality of weight ranks in each of the plurality of containers, for example, a container in which the objects to be weighed are packed in each weight rank may be used as a container. The packaged objects to be weighed may be transferred.

  According to this embodiment, the indicating means includes a plurality of display units arranged corresponding to the containers in which the objects to be weighed of the respective weight ranks are respectively stored. Therefore, the weight rank of the object to be weighed can be instructed, and the display unit has a display unit for relatively displaying the weight of the object to be weighed. Can relatively indicate the weight of the object to be weighed.

  (4) The weighing system of the present invention includes the weighing device of the present invention and the instruction means connected to the weighing device.

  According to the weighing system of the present invention, the operator roughly places a small object to be weighed with respect to the target weight on the placing portion, and has the weight rank designated by the instruction means, and the specified relative By simply selecting a weight object to be weighed and placing it on the mounting part, you can complete the combination of objects to be weighed as the target weight and perform weighing work efficiently without relying on experience or intuition. be able to.

  As described above, according to the present invention, when the object to be weighed is placed on the placing portion with a small amount with respect to the target weight, the object to be weighed to be added has the weight rank, Since the weight in the weight rank is specified and instructed, the operator visually selects the object to be weighed in the specified weight rank from the objects to be weighed and places it on the mounting unit. The combination of objects to be weighed that has reached the target weight is completed. Therefore, the combination of the objects to be weighed reaching the target weight can be easily completed without depending on the experience and intuition of the worker, and the working efficiency is improved.

It is a block diagram of the measurement system concerning Embodiment 1 of the present invention. It is a perspective view of the electronic balance as a measuring apparatus concerning Embodiment 1 of the present invention. It is the front view (a), top view (b), and side view (c) of the display unit as an instruction | indication means concerning Embodiment 1 of this invention. It is a perspective view which shows the attachment state of the display unit which concerns on Embodiment 1 of this invention. It is a perspective view which shows the use condition of the display unit which concerns on Embodiment 1 of this invention. It is a flowchart of the measurement process which concerns on Embodiment 1 of this invention. It is a flowchart of the measurement process which concerns on Embodiment 1 of this invention. It is a flowchart which shows the principal part of the measurement process which concerns on Embodiment 2 of this invention. It is the front view (a), top view (b), and side view (c) of the display unit which concern on Embodiment 3 of this invention. It is a perspective view which shows the attachment state of the display unit which concerns on Embodiment 4 of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a block diagram of a weighing system including a weighing device according to an embodiment of the present invention.

  The weighing system of this embodiment is used when bags such as agricultural products and marine products are packed into small portions in a fixed amount.

  This weighing system includes an electronic balance 10 as a weighing device, and a plurality of, in this example, three display units 20a to 20c as instruction means for instructing an object to be weighed as described later.

  The electronic balance 10 includes a weighing unit 11 for weighing an object to be weighed, a control unit 12 for performing arithmetic processing, a storage unit 13, a setting input unit 14 for setting a target weight, a measured weight value and an operation. A display unit 15 and a connector 19 are provided for displaying instructions to the person.

  The control unit 12 includes a calculation unit 16, an instruction control unit 17 that controls the display units 20 a to 20 c to indicate an object to be selected, and a display control unit 18 that controls the display unit 15. Each display unit 20a-20c is provided with lighting circuits 21a-21c and lamps 22a-22c.

  FIG. 2 is an external perspective view of the electronic balance 10 of this embodiment.

  The electronic balance 10 includes a main body case 30 and includes a weighing pan 31 as a placement portion on which an object to be weighed is placed. In the main body case 30, in addition to the control unit 12 and the storage unit 13 described above, a load sensor such as a load cell that is connected to the weighing pan 31 and outputs a load signal to the calculation unit 16 is incorporated. On the front surface of the main body case 30, a setting input unit 14 including operation buttons and a display unit 15 including a liquid crystal display are provided.

  FIG. 3 shows the display units 20a to 20c. FIG. 3A is a front view, FIG. 3B is a plan view, and FIG. 3C is a side view.

  The display units 20a to 20c have the same configuration, and the display units 20a to 20c are representatively shown as the display unit 20 in FIG. 3 and FIG.

  As shown in FIG. 3, the display unit 20 includes a case 23. A lighting circuit 21 and the like are built in the case 23, and a red LED 24, a blue LED 25, and a yellow LED 26 are arranged on the front surface of the case 23. Three sets of lamps 22 are provided. The lighting circuit 21 lights any one of the red LED 24, the blue LED 25, and the yellow LED 26 in response to a lighting signal from the electronic balance 10. An attachment clip 27 is provided on the rear surface of the case 23.

  FIG. 4 is a perspective view showing an attached state of the display unit 20.

  The display unit 20 is attached to a box 40. The box 40 stores objects to be weighed in ranks, which will be described later. The display unit 20 is detachably attached to the upper end of an arbitrary wall surface of the box 40 so that the wall is sandwiched by the clip 27 from above. The display unit 20 is connected to the connector 19 of the electronic balance 10 via a signal line (not shown).

  Next, the weighing system of this embodiment will be described with a specific example.

  In this case, the objects to be weighed that are ranked and packed in S, M, and L sizes having different weight ranks, for example, potato boxes of S, M, and L sizes, are purchased, and are subdivided. This is applied to the case of creating a fixed amount of a plurality of potato bags.

  The weight ranges of the weight ranks S, M, and L of the boxed potato are determined in advance, and the weight ranks S, M, and L and the weight ranges are set and stored in the electronic scale 10 as rank information described later. Stored in the unit 13. In this embodiment, the weight range is equally divided into three, and the weight value of the object to be weighed is relatively large, medium, or small depending on which of the three divided weight ranges belongs. The weight can be specified. For this reason, the number of sections of the weight range, three in this example, is set in the electronic balance 10.

  First, as preparation for the bagging operation, as shown in FIG. In order to transfer L potatoes, three boxes 40a, 40b, 40c are prepared for each rank, S size boxed potatoes are transferred to the S box 40a, and M boxes 40b are set to M. The sized boxed potatoes are transferred, and the L-sized boxed potatoes are transferred to the L box 40c.

  Display units 20a, 20b, and 20c are attached to the boxes 40a, 40b, and 40c, respectively. Each display unit 20a, 20b, 20c is connected to a predetermined port of the connector 19 of the electronic balance 10 via a signal line. The connector 19 has a sufficient number of ports so as to correspond to the number of ranks of various objects to be weighed. Among these ports, as will be described later, each of the S, M, and L potatoes. The display unit 20a is connected to the S port, the display unit 20b is connected to the M port, and the display unit 20c is connected to the L port.

  The red LEDs 24a, 24b, and 24c in the lamps 22a, 22b, and 22c of the display units 20a, 20b, and 20c have a relatively small weight (light weight) when the weight ranges of the ranks are divided into the three. ) Indicating that the blue LEDs 25a, 25b, and 25c are relatively medium in weight, the yellow LEDs 26a, 26b, and 26c are relatively heavy (heavy) ) It is decided in advance with the worker that it is “Large”. That is, the S-sized potato contained in the box 40a is within a certain weight range, and among the potatoes within this weight range, the red LED 24a is judged to be small by the subjectivity of the operator, and the blue LED 25a is moderate. What is to be determined is instructed to determine that the yellow LED 26a is large.

  Similarly, the red LED 24b, the blue LED 25b, and the yellow LED 26b are determined as “small”, “medium”, and “large” among the M-sized potatoes in the box 40b, respectively, the red LED 24c, the blue LED 25c, and the yellow LED 26c. Are “small” of the L-sized potatoes in the box 40c. It will indicate what is judged as “medium” or “large”.

  In this example, S, M, and L boxed potatoes were transferred to boxes 40a, 40b, and 40c, respectively, but the potatoes may be used without being transferred, and in this case, The display units 20a, 20b, and 20c may be attached to the box.

  Next, the weighing operation will be described using the flowchart of FIG.

  As preparation, rank information is input as shown in FIG. 6A (S1). This is stored in the storage unit 13 of the electronic balance 10 in association with the name of the item to be weighed, the place of production, the weight rank, the weight range by weight rank, and the like. For example, the product name is potato, the weight rank is S, M, L, and the weight range information for each rank is associated, and a name for calling this information, for example, potato 01 is appropriately named and input. This information input may be performed from the setting input unit 14, or may be performed by connecting a personal computer to the electronic balance 10 and using dedicated information input software. If information has already been input, this step S1 may be passed.

  The setting input unit 14 of the electronic balance 10 is operated to sequentially display the names for information calling stored in step S1 on the display unit 15 to select desired information. In this example, potato 01 is selected (S2).

  Of the rank information of the potato 01, the weight rank to be used this time is selected by operating the setting input unit 14. In this example, the fixed weight ranks S, M. All of L is used (S3). For example, if only potatoes with M and L weight ranks are packed, only M and L are selected.

  By the operation in step S3, information on the weight range for each rank is called from the storage unit 13 and displayed on the display unit 15 (S4). Here, in addition to the display of the weight range by rank, the port of the connector 19 to which the corresponding display unit 20 is connected may be displayed. For example, the port number to which the display unit 20c attached to the weight rank L box 40c is connected is displayed next to the display of the weight range of the weight rank L. The operator operates the S.D. displayed on the display unit 15. By connecting the display units 20a, 20b, and 20c of S, M, and L to the ports corresponding to the port numbers of M and L, respectively, the electronic balance 10 and each display unit 20 are correctly associated and connected.

  In step S5, the setting input unit 14 is operated to input a target weight as setting information.

  The operator should have a weight less than the target weight, preferably about 90% of the object to be weighed, for example, if the target weight is 1 kg, the weight of about 900 g, for example, one M-sized potato is around 100 g. For example, about nine potatoes are placed on the weighing pan 31 in, for example, a bag (S6).

  About nine potatoes placed on the weighing pan 31 are weighed (S7).

  In step S8, the calculation unit 16 obtains a weight value obtained by subtracting the weight measured in step S7 from the target weight, that is, the weight value of the potato to be added to obtain the target weight. Whether or not the obtained weight value of the potato to be added exceeds the weight of the weight rank L that is the maximum weight that can be selected, that is, whether or not there is one remaining potato to be added to obtain the target weight Determine whether.

  If not, the display unit 15 performs an additional display for adding one potato in step S10. In step S11, one potato is added to the bag placed on the weighing pan 31. The size of the potato to be added is not particularly limited. For example, it is preferable to add one L-sized potato. Instead of the additional display by the display unit 15 or together with the additional display by the display unit 15, the display unit 20 may be used to instruct the potato to be added in the same manner as described later.

  If the number of potatoes to be added is one in step S8, the weight rank of the potato to be added and the relative weight in the weight rank, large, medium, and small are obtained (S9). In step S8, the weight value of one potato to be added is calculated, so that the weight value corresponds to which of the weight ranks S, M, and L, the large, medium, and small sizes? Ask for. That is, the weight range of each weight rank is determined as to which of the three weight ranges equally divided, and when belonging to the heavy category, when belonging to the heavy category, the middle or light category. If it belongs to, it is judged as small.

  Next, in step S12 shown in FIG. 6B, after the instruction control unit 17 gives an instruction to turn off all the lamps of the display units 20, the weight of the last potato to be added obtained in step S9 is obtained. A lighting signal for lighting the corresponding lamp is output to the corresponding display unit 20.

  For example, if the last potato to be added has a weight rank of S and corresponds to “small” in the weight range, the lighting circuit of the display unit 20a attached to the S box 40a. 21a is instructed by turning on the red LED 24a that designates “small”, and all other LEDs remain in the off state.

  Similarly, when the last one is S, S large, M small, M medium, M large, L small, L medium, L large, blue LED 25a, yellow LED 26a, red LED 24b, blue LED 25b, yellow LED 26b The red LED 24c, the blue LED 25c, and the yellow LED 26c are instructed to turn on. In the example of FIG. 5, the red LED 24c that designates the small size of the weight rank L is lit.

  In step S <b> 13, one potato corresponding to the lit lamp is taken out of the box 40 and added to the bag placed on the weighing pan 31. When the red LED 24a of the display unit 20a attached to the S box 40a is lit, one potato that the worker has determined that is subjectively small is taken out from the S box 40a and added to the bag. Similarly, when the blue LED 25a and the yellow LED 26a are lit, the middle and large ones are taken out from the S box 40a, respectively, and when the red LED 24b, the blue LED 25b and the yellow LED 26b are lit, When the red LED 24c, the blue LED 25c, and the yellow LED 26c are lit, the small, medium, and large items are respectively taken out from the L box 40c.

  The weight of the bag placed on the weighing pan 31 is weighed (S14). In the example of FIG. 5, one small item is taken out from the L box 40c and added to the bag.

  In step S15, it is determined whether or not the measured value in step S14 has cleared the target weight. If the target weight has not been cleared, the process proceeds to step S16, and if it has been cleared, the process proceeds to step S18.

  In step S16, a shortage error that does not reach the target weight is displayed on the display unit 15.

  In step S <b> 17, one potato that is determined to be small subjectively by the operator is taken out from the bag placed on the weighing pan 31 and returned to the remaining one. This is to avoid becoming underweight again by removing the smallest possible potatoes from the bag in view of the lack of weight in spite of adding the last one according to the lamp instructions. It is an object. Then, the process returns to step S7.

  When the weight is equal to or greater than the target weight in step S15, an OK display indicating that the target weight has been reached is performed on the display unit 15 (S18).

  Unpack the bag placed on the weighing pan 31 (S19).

  In step S20, it is determined whether or not all bagging operations have been completed. If not, the process proceeds to step S21.

  In step S21, the lamp that is lit on the display unit 20 is turned off, and the measurement value of the electronic balance 10 is reset to zero, and then the process returns to step S6 and the same operation is repeated.

  According to the weighing system configured in this way, the target to be weighed is turned on by turning on the lamp 22 of the display unit 20 only by weighing the objects to be weighed that are already ranked in a small amount with respect to the target weight. The last piece to be weighed to reach the weight is specified by the weight rank and the relative size within that weight rank. The operator selects and adds the objects to be weighed having a designated relative size from the designated weight ranks, and the bagging of the objects to be weighed reaching the target weight is completed. In this way, since the last object to be weighed for the target weight is instructed, the operator only has to select the bag to be roughly packed and the object to be weighed in the specified size. Quantitative weighing can be done easily without reliance.

  In addition, since the objects to be weighed that have already been ranked are used, detailed ranking work is not required.

  In addition, if the target weight is not reached, one small object to be weighed is removed from the bag and returned to the remaining one with respect to the target weight, thus reducing the possibility that the target weight will not be reached again. Can do.

  In addition, if you make a lot of about nine potatoes that are not enough for the target weight, put them in a bag in advance, put each bag sequentially on the weighing pan 31, and add the last one, Work efficiency is further improved.

  In addition to the target weight, an allowable value (upper limit value) may be set, and a fixed amount of bags that are equal to or larger than the target value and within the allowable value may be used. In this case, when the last one is added, if it exceeds the allowable value, a message to that effect is displayed, for example, one large object to be weighed is removed from the bag, and the target weight is exceeded. It is sufficient to return to the remaining one state.

(Embodiment 2)
In the first embodiment described above, it is assumed that the objects to be weighed that are ranked and packed in a box are used. However, in the second embodiment, the objects to be weighed that are not ranked can be handled.

  The configurations of FIGS. 1 to 5 of the first embodiment are the same in the weighing system of the second embodiment. FIG. 7 shows a characteristic part of the second embodiment. By adding S31 to 37 of FIG. 7 to the flowchart of FIG. 6, the flowchart of the quantitative measurement work of the second embodiment is obtained. Note that the contents of the steps S1 to 21 in FIG. 6 are the same.

  Description of the same parts as those of the first embodiment shown in FIGS. 1 to 6 is omitted, and only the characteristic parts of FIG.

  In step S31, it is determined whether to use potato bagging that has already been ranked or not. When using the ranked ones, the process proceeds to step S2, and thereafter, the flow is the same as in FIG. When using those not ranked, the process proceeds to step S32.

  In step S32, dozens of samples are arbitrarily selected from the unranked potatoes prepared for bagging. Note that the number of samples is not limited to several tens, but if the number is too large, it takes time to perform the ranking operation, so that the number of samples is appropriately determined. Then, the selected samples are placed on the weighing pan 31 one by one and weighed, and the individual weights are stored in the storage unit 13.

  In step S33, the setting input unit 14 is operated, and based on the sample data input in step S32, the arithmetic unit 16 calculates the average weight and standard deviation and stores them in the storage unit 13.

  In step S34, the desired number of ranks for the bagging operation to be performed is input by operating the setting input unit 14 and stored in the storage unit 13. For example, if the rank is divided into three, S, M, and L, the number of rank divisions is 3.

  In step S35, the setting input unit 14 is operated to calculate the weight range for each rank in the calculation unit 16 based on the average weight, standard deviation, and number of ranks stored in the storage unit 13, and the display unit 15 The information is displayed and stored in the storage unit 13.

  In step S36, all the potatoes for bagging including the potato used for the sample are placed on the weighing pan 31 one by one and weighed. By comparing the weight of the potato displayed on the display unit 15 with the weight range for each rank, it is determined whether the potato corresponds to S, M, or L. In advance, the S box 40a, the M box 40b, and the L box 40c shown in FIG. 5 are prepared. If the potato is S, the box 40a is used. If the potato is M, the box 40b is used. If there is, put it in the box 40c. Instead of the operator determining the rank of the potato from the weight of the potato displayed on the display unit 15 and the weight range for each rank, the calculation unit 16 automatically calculates the rank of the potato and displays the display unit. The ranks of S, M, and L may be directly displayed on 15 to inform the operator of the rank of the potato.

  For all the potatoes for bagging, the ranking operation in step S36 is performed (S37), and when the ranking operation is completed, the operation proceeds to the operation after step S5 in FIG.

  According to the weighing system configured in this way, even if the objects to be weighed are not ranked in advance, the rank weight range is output by weighing a part of the objects to be weighed as a sample, The objects to be weighed can be weighed and ranked based on the rank weight range.

(Embodiment 3)
In the first embodiment described above, the lamp 22 of the display unit 20 includes the red LED 24, the blue LED 25, and the yellow LED 26, whereas in the third embodiment, the configuration illustrated in FIG.

  That is, the lamp 22 of the third embodiment is configured by RGB three-color LEDs, and shines in several colors by combining RGB. When a lighting signal from the electronic balance 10 is input to the lighting circuit 21 of the lamp 22, the three-color LED is turned on so that the color agreed with the operator in advance is obtained according to the instruction. For example, an instruction to select a small potato from the box 40 causes the three-color LED to glow red (only R lights up), an instruction to select the middle light blue (only B lights), and selects the larger one The instruction to do so shines yellow (R and G are lit). The worker takes out one potato of a specified size from the box 40 according to the color of the lamp 22 and adds it to the bag.

  Other configurations are the same as those in the first embodiment.

(Embodiment 4)
In the first embodiment described above, the display unit 20 is attached to the box 40 with the clip 27, whereas in the fourth embodiment, the structure shown in FIG.

  In other words, the display unit 20 is used as a stationary type, and is placed adjacent to a tray in which ranked objects to be weighed are placed.

(Other embodiments)
The display unit 20 is not limited to the one that specifies the size according to the lighting color of the lamp 22. For example, a bar graph is displayed on the display screen of the display unit 20, and depending on the length, a large value is designated when the length is long, a small value is designated when the length is short, or a size such as a limit meter is designated. It may be.

  Further, instead of the display, an audio unit that instructs by voice such as “L large” and “M small” may be used. In this case, as shown in FIG. 5, it is not necessary to provide for every rank of a to-be-measured object, and it should just install one piece. The voice unit includes a voice circuit and a speaker. When a control signal is input from the control unit 12 of the electronic balance 10, the voice circuit uses the control signal to send a comment sentence, an electronic sound, or the like stored in advance to the speaker. Output from.

  Further, a combination of a display unit and a sound unit may be used to instruct both display and sound.

  In the above-described embodiment, the object to be weighed is applied to potato. However, the object to be weighed is any product as long as it is sold in small quantities such as agricultural products, seafood, bags, etc. There may be.

  Further, the weight rank is not limited to the above-described S, M, and L, but is arbitrary such as SS, S, M, L, and LL.

  INDUSTRIAL APPLICABILITY The present invention is useful as a quantitative measurement when a purchased agricultural product or the like is packed in a certain size for sale at a store in a retail store such as a supermarket.

10 Electronic scale (metering device)
DESCRIPTION OF SYMBOLS 11 Weighing part 12 Control part 13 Memory | storage part 14 Setting input part 15 Display part 16 Calculation part 17 Instruction control part 18 Display control part 19 Connector 20 Display unit (instruction means)
21 lighting circuit 22 lamp

Claims (4)

A weighing device having a placing portion on which an object to be weighed is placed and weighing the weight of the object to be placed on the placing portion;
Rank information including a plurality of weight ranks of the objects to be weighed and the weight ranges of the respective weight ranks,
A setting unit in which setting information including a target weight obtained by totaling the weights of the plurality of objects to be weighed is set;
Based on the weight of the weighing object placed on the placement unit, the setting information and the rank information, the weight of the weighing object placed on the placement unit does not reach the target weight A control unit for controlling the instruction means to instruct an object to be weighed to be added to the placement unit,
The control unit controls the instruction means to instruct a weight rank of the object to be added, and to relatively specify and instruct the weight of the object to be added in the weight rank. ,
A weighing device characterized by that. When the control unit reaches the target weight by adding one of the weight ranks of the plurality of weight ranks to the weighing object placed on the placing unit. The one object to be added is indicated by controlling the indicating means and its weight rank and the relative weight in the weight rank;
The weighing device according to claim 1. The objects to be weighed in the plurality of weight ranks are respectively stored in a plurality of containers for each weight rank,
The instructing means includes a plurality of display units arranged individually corresponding to the plurality of containers, and the display unit relatively displays a weight of the object to be weighed to be added. Have
The control unit controls the instruction means to instruct the weight rank of the object to be added by the display unit corresponding to the weight rank of the object to be added, and to determine the relative weight of the object. Instruct
The weighing device according to claim 1 or 2. The weighing device according to any one of claims 1 to 3, and the instruction means connected to the weighing device.
A weighing system characterized by that.

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