JP6016441B2 - Weighing device and weighing system - Google Patents

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 in which setting information including 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 a target weight obtained by summing up the weights of the plurality of objects to be weighed is set. 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. is intended to indicate the number of weight categories and the objects to be weighed of the weight classes of objects, the more heavy The ranks of the objects to be weighed are respectively stored in a plurality of containers for each weight rank, and the instruction means includes a plurality of display units arranged individually corresponding to the plurality of containers. Has a display unit for displaying the number of objects to be added, and the control unit controls the instruction means by the display unit corresponding to the weight rank of the objects to be added. Instruct the weight rank of the object to be added and the number of objects .

  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 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.
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 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 and the number of weight ranks are indicated.

  As a result, the operator selects the designated number of objects to be weighed and adds them to the placement unit, thereby completing the combination of objects to be weighed that have reached the target weight. What is necessary is just to bag the combination of a measurement thing.

In this way, the weight rank of the objects to be weighed and the number of the weight ranks are specified so that the weight of the plurality of objects to be weighed becomes the target weight. It is only necessary to place a small number of objects to be weighed roughly on the placement unit, select the weight rank and the number of objects to be weighed, and place them on the placement unit. Therefore, it is not necessary for the operator himself to determine the weight rank and the number of objects to be added, and it is easy to select an object to be added and obtain the target weight regardless of experience and intuition. A combination of weighing objects can be completed, and work efficiency is improved.
According to the present invention, the indicating means includes a plurality of display units respectively arranged corresponding to the containers in which the objects to be weighed of the respective weight ranks are stored. Therefore, the weight rank of the object to be weighed can be instructed, and the display unit has a display unit for displaying the number of objects to be weighed. The number of objects to be weighed can be indicated.

  (2) In a preferred embodiment of the weighing apparatus of the present invention, the setting information includes an allowable value of the target weight, and the control unit is to be weighed placed on the mounting unit from the target weight. The weight to be added is obtained by obtaining a combination of the weights of the plurality of weight ranks that is equal to or more than the weight value obtained by subtracting the weight of the weight and within the allowable value.

  The control unit calculates the weight value of the weighing object to be added by subtracting the weight of the weighing object placed on the loading part from the target weight. The combination of the objects to be weighed with the weight value can be obtained as the object to be added, and the obtained object to be added can be indicated as the weight rank and the number of the weight ranks.

  According to this embodiment, the operator only needs to place an object to be weighed that is smaller than the target weight on the placing unit, and thus the object to be added has its weight rank and the number of the weight ranks. Therefore, the combination of the objects to be weighed can be completed simply by selecting and adding the objects to be weighed according to the instruction.

( 3 ) 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 on the target weight on the placing portion, and is the weight rank designated by the instruction means, and the designated number. By simply selecting an object to be weighed and placing it on the mounting section, 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. Can do.

  As described above, according to the present invention, when the object to be weighed is placed on the placing portion with a small amount relative to the target weight, the object to be weighed to be added has the weight rank and the number of the objects to be added. Therefore, the operator takes out the designated number of objects to be weighed in the designated weight rank and adds them to the placement unit, thereby completing the combination of objects to be weighed that has reached the target weight. 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 a perspective view which shows the attachment state of the display unit which concerns on Embodiment 3 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, six display units 20a to 20f 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 f to indicate an object to be selected, and a display control unit 18 that controls the display unit 15. Each display unit 20a-20f is provided with lighting circuits 21a-21f and lamps 22a-22f.

  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, and the weighing unit 11 includes a weighing pan 31, a load cell, and the like.

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

  The display units 20a to 20f have the same configuration, and in FIG. 3 and FIG. 4 described later, the display units 20a to 20f are representatively shown as the display unit 20.

  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 one set of three red LEDs 24 is provided on the front surface of the case 23. A lamp 22 is provided. The lighting circuit 21 turns on the red LED 24 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.

  Here, when packing potatoes with different weight ranks, such as SS, S, M, LM, L, and LL sizes, are subdivided into a plurality of potatoes in a fixed amount It applies to and explains.

  The weight range of each weight rank SS, S, M, LM, L, LL of the boxed potato is determined in advance, and each weight rank SS, S, M, LM, L, LL and its weight range are described later. The rank information is set in the electronic balance 10 and stored in the storage unit 13.

  First, as preparation for bagging work, as shown in FIG. 5, three boxes 40a to 40f are used for each rank in order to transfer the purchased boxed SS, S, M, LM, L, LL potatoes. Prepare and transfer SS-sized potatoes to SS box 40a, S-sized potatoes to S box 40b, and M-sized potatoes to M box 40c. Similarly, potatoes of sizes LM, L, and LL are transferred to the boxes 40d to 40f, respectively.

  Display units 20a to 20f are attached to the boxes 40a to 40f, respectively. Each display unit 20a to 20f 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, SS, S, M, LM, L, Each port for LL potatoes is set, the display unit 20a is connected to the SS port, the display unit 20b is connected to the S port, and the display unit 20c is connected to the M port. 20d to 20f are connected to ports for LM, L, and LL, respectively.

  Further, in the lamps 22a to 22f of the display units 20a to 20f, the number of lighting of the three red LEDs 24a to 24f is determined in advance between an operator indicating the number of potatoes to be weighed and an operator. For example, when one red LED 24a is turned on in the lamp 22a of the display unit 20a, this indicates one SS-sized potato in the box 40a to which the display unit 20a is attached, and two lamps 22a in the display unit 20a. When the red LED 24a is turned on, two SS-sized potatoes are indicated. When the three red LEDs 24a are turned on in the lamp 22a of the display unit 20a, three SS-sized potatoes are indicated. Similarly, in the lamps 22b to 22f of the display units 20b to 20f, the number of lighting of the red LEDs 24b to 24f indicates the number of each size of S, M, LM, L, and LL, respectively.

  In this example, the boxed potatoes of SS, S, M, LM, L, and LL were transferred to the boxes 40a to 40f, respectively. However, the potatoes may be used as they are without being transferred. In that case, the display units 20a to 20f may be attached to the box.

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

  As preliminary 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 product name, place of production, weight rank, weight range for each weight rank, and the like. For example, the product name is potato, the weight rank is SS, S, M, LM, L, LL, and the weight range information for each rank is associated, and the name when calling this information, for example, potato 01 is appropriately named. 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, all of the standard weight ranks SS, S, M, LM, L, and LL already ranked are used (S3). For example, if only potatoes with a weight rank of S, M, and L are packed, only S, 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 20a attached to the weight rank SS box 40a is connected is displayed next to the weight range SS weight range display. The operator attaches SS, S, M, LM, L, and LL display units 20a to 20f to the ports corresponding to the SS, S, M, LM, L, and LL port numbers displayed on the display unit 15, respectively. By connecting each, 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 and an upper limit value that is an allowable value as setting information. The operator has a weight less than the target weight, preferably about 70% to 80%, for example, if the target weight is 1 kg, about 700 to 8000 g, for example, the weight of one M-sized potato is If it is around 100 g, about 7 or 8 potatoes are placed on the weighing pan 31 in a bag (S6).

  The 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. A combination of potatoes that is equal to or more than the obtained weight value of the potato to be added and that does not exceed the upper limit value set in step S5 and is closest to the target weight is calculated. The combination of potatoes selected by this combination calculation is the weight rank and number of potatoes to be added. If the weight value weighed in step S7 may exceed the upper limit value, for example, an error display may be performed to take out the potato from the bag and redo the combination calculation.

  In this embodiment, when there are a plurality of combinations that are greater than or equal to the target weight and less than or equal to the upper limit value by the combination calculation, the closest combination to the target weight is selected, but as another embodiment of the present invention, For example, you may make it preferentially select the combination of the potatoes of a weight rank with much remaining amount. That is, the boxed potatoes of each weight rank purchased are quantitative, and it is possible to grasp the approximate number of the potatoes. You can know the remaining amount of potatoes in the rank. A combination of potatoes having a large remaining amount of weight rank is preferentially selected.

  In step S9, an instruction to turn off the lamps of all the display units 20 is once issued from the instruction control unit 17, and then a lighting signal for turning on the lamps corresponding to the combination of potatoes obtained in step S8 is given to the corresponding display unit 20. Output.

  For example, in step S8, when a combination of two L-sized potatoes and one LL-sized potato is selected, two red LEDs 24e are lit on the lighting circuit 21e of the display unit 20e for L size. An instruction and an instruction to turn on one red LED 24f are output to the lighting circuit 21f of the display unit 20f for LL size, and all the other LEDs are kept in the off state. FIG. 5 shows this lighting state.

  In step S10 shown in FIG. 6B, two potatoes corresponding to the lit lamps are taken out from the L box 40e and one from the LL box 40f, respectively, and placed on the weighing pan 31. Add in the bag.

  The weight of the bag on the weighing pan 31 is measured (S11).

  In step S12, it is determined whether or not the measured value in step S11 is greater than or equal to the target weight. If it is not the target weight or more, the process proceeds to step S13, and if it is the target weight or more, the process proceeds to step S15.

  In step S13, a shortage error that does not reach the target weight is displayed on the display unit 15.

  In step S14, the potatoes that the operator has determined to be small subjectively are taken out of the bags placed on the weighing pan 31 and returned to a state where the target weight is insufficient. The purpose of this is to avoid becoming underweight again by eliminating the smallest possible potatoes from the bag in view of the lack of weight despite the addition of potatoes by lamp instructions. Yes. In addition to taking out as many small potatoes as the added number, it is possible to freely decide how to take it out, such as taking out more than the added number, for example, one more. Then, the process returns to step S7.

  In step S15, it is determined whether or not the measured value measured in step S11 is not more than the upper limit value, that is, whether or not it is within an allowable range. If it exceeds the upper limit value, the process proceeds to step S16, and if it is less than the upper limit value, the process proceeds to step S19.

  In step S16, the display unit 15 displays an overdose error exceeding the upper limit value.

  In step S17, the potato added in step S10 is removed from the bag placed on the weighing pan 31. At this time, the added potato itself may be taken out and the operation after S7 may be repeated again. In that case, it may be possible to prevent over-dose by selecting a larger potato from the bag, or in step S17. When taking out, one more may be taken out so as to avoid over-determination, and the way of taking out at the time of over-loading may be freely decided with the operator in advance.

  In step S18, the lamp turned on in step S16 is turned off. Then, the process returns to step S7.

  If it is less than or equal to the upper limit weight value in step S15, OK display is performed to indicate that the target weight has been reached and the upper limit value has not been exceeded (S19).

  Unpack the bag on the weighing pan 31 (S20).

  In step S21, it is determined whether or not all bagging operations have been completed. If NO, the process proceeds to step S22.

  In step S22, the lamp in which the display unit 20 is lit 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 as described above, the lamps 22 of the display unit 20 can be measured by roughly weighing the objects to be weighed that have already been ranked, leaving only a few of them to the target weight. The combination of objects to be weighed to reach the target weight by lighting is indicated by its weight rank and number. By adding the designated number of objects to be weighed from the weight ranks designated by the operator, bagging of objects to be weighed that reaches the target weight and is not more than the upper limit value is completed.

  In this way, since the weight rank and the number of objects to be weighed for the target weight are indicated, the operator only has to select rough bagging and the indicated object to be weighed, and rely on experience and intuition. And quantitative weighing work can be performed easily.

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

  In addition, when the target weight is not reached, the small objects to be weighed are removed from the bag and the remaining several pieces are returned to the target weight to reduce the possibility that the target weight will not be reached again. be able to.

(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 each step of S1 to S22 in FIG. 6 are the same.

  Description of the same parts as those of the first embodiment shown in FIGS. 1 to 6 will be omitted, and only the characteristic parts of FIG. 7 will be described.

  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 six SS, S, M, LM, L, and LL, the number of ranks is six.

  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 and the weight range for each rank, it is determined whether the potato corresponds to SS, S, M, LM, L, or LL. SS-LL boxes 40a-40f are prepared in advance as shown in FIG. 5 above. If the potato is SS, it is in box 40a, if it is S, it is in box 40b, and each box 40c- Put in 40f. 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. It is also possible to display SS, S, M, LM, L, LL and the rank directly on 15 to inform the operator of the rank of 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 display unit 20 is attached to the box 40 with the clip 27, whereas in the third embodiment, the structure shown in FIG.

  That is, the display unit 20 is used as a stationary type, and is placed adjacent to the tray 41 containing the ranked objects to be weighed.

(Other embodiments)
The number of display units 20 is not limited to one that designates the number according to the number of lamps 22 that are turned on. For example, a bar graph may be displayed on the display screen of the display unit 20, and the number may be designated by its length, or the number may be designated by directly displaying a number.

  Further, the display unit and the audio unit may be combined to instruct both display and audio.

  In the above-described embodiment, the object to be weighed is applied to potatoes. There may be.

  The weight rank is not limited to the above-described SS, S, M, L, and LL, and is arbitrary.

  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 (3)

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 indicate the weight rank of the object to be weighed and the number of objects to be weighed in the weight rank ,
The objects to be weighed in the plurality of weight ranks are respectively stored in a plurality of containers for each weight rank,
The indicating means includes a plurality of display units arranged individually corresponding to the plurality of containers, and the display unit includes a display unit for displaying the number of objects to be weighed.
The control unit controls the instruction means to instruct the weight rank of an object to be added and the number thereof by the display unit corresponding to the weight rank of the object to be added. ,
A weighing device characterized by that. The setting information includes an allowable value of the target weight,
The control unit has a weight value equal to or more than a weight value obtained by subtracting a weight of an object to be weighed placed on the placement unit from the target weight, and having a weight value within the allowable value. The combination of the objects to be weighed is obtained and the object to be weighed is added.
The weighing device according to claim 1. The weighing device according to claim 1 or 2, and the instruction means connected to the weighing device.
A weighing system characterized by that.

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