JPS6291820A - Combination scale - Google Patents

Abstract

PURPOSE:To shorten the allowable time necessary for combination by performing the combination operation whenever the measuring value measured by a scale is stabilized. CONSTITUTION:The combination operation is performed by a combination arithmetic means 10 based on the measuring signal of a scale 2 and a storage value of a storage means 8 when the measuring signal is stabilized by measuring with the scale 2. In case of the allowable combination being unobtainable by this combination operation, the commodity on the scale 2 is moved to a vacant receiving part 4 and the measuring signal is stored in the storage zone corresponding to the receiving part 4 which received the commodity. The combination operation is then performed again when the following commodity is placed on and the measuring signal is stabilized. Therefore the combination arithmetic operation is not performed when the commodity is fed to all the receiving part 4 but the combination arithmetic operation is performed whenever measuring by the scale 2 and the measuring value thereof is stabilized, so the allowable time necessary for the combination is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a combination tsubo in which a plurality of article weights are variously combined and one whose total weight is an allowable value is selected from among these combinations.

<Prior art> Conventionally, the above-mentioned combination scale has been disclosed in Japanese Patent Application Laid-open No. 57-1712
There was something like the one shown in Publication No. 16. It includes a scale, n receptacles, and a memory having n storage areas, the scale weighing a first article, and the first article being transferred to a first receptacle. At the same time, the measured value of the first article is stored in the first area of the storage device. Thereafter, in the same manner, the weighed articles are transferred to n receivers in order, and the weight values are stored in each area of the storage device in order. When all the articles have been transferred to the receiving Rg, the (n+1)th article is weighed on the scale, and the (n+1)th article is maintained on the push-up. Finally, various combinations are made of the n weight values stored in the memory 2g and the weight values from the scale (n+x), and combinations that give an acceptable value for total type 1 are selected. ,
Displays the receptacles and scales containing the items that make up the selected combination.

<Problems to be Solved by the Invention> However, in the above-mentioned combination scale, the combination calculation is performed only after the total of (n+1) items is completed, so it is difficult to find an acceptable combination after starting weighing. There was a problem that it took a long time to obtain the product. In particular, permissible combinations are not necessarily obtained by combining (n+1) measured values, but may be obtained by combining a smaller number of measured values. However, this is being overlooked.

<Means for Solving the Problems> In order to solve the above problems, as shown in FIG. 1, the present invention includes at least one scale 2, a plurality of receiving sections 4,
It has a storage means 8 having a storage area 6 corresponding to each of these receiving sections 4, and a combination calculation means 10 for selecting an allowable combination based on the weighing signal of the scale 2 and each stored value of the storage means 8. These are the same as the conventional ones mentioned above.

Therefore, when an article is received in the receiving section 4 consisting of
In the storage area 6 corresponding to this receiving section 4, the receiving section 4 is stored.
I can't remember the weight of items.

In this invention, when the weighing signal of the scale 2 becomes stable,
It has stability detection means 12 for operating the combination calculation means 10.

<Operation> According to the present invention, when an article is weighed with the scale 2 and the weighing signal becomes stable, the combination calculation means 10 performs a combination calculation based on the weighing signal of the scale 2 and the stored value of the storage means 8. Scale 2
When there are a plurality of scales, a combination calculation may be performed using only the weighing signals of each scale 2.

When an acceptable combination is not obtained through this combination calculation, the articles on the scale 2 are transferred to an empty receiving section 4.

Thereby, the weighing signal is stored in the storage area corresponding to the receiving section 4 that received the article. Then, when the next article is placed on the scale 2 and the weighing signal becomes stable, the combination calculation is performed again. That is, the metric values participating in the combination increase in order.

<Embodiment> In the first embodiment, as shown in FIG. 2, f! ! It has 22 platforms 24. On the top surface of the main body 2o,
A total of ten platforms 26, which are receiving sections, are provided.

A scale indicator light 28 is provided on the front side of the mounting table 24 of tsubo 2z, and an acceptance indicator light 30 is provided on the front side of each receiving section 26.

On the front side of the main body 20, from the left side, there is a weight display section 32.
, a combination weight display section 34, a set weight display section 36, and an upper limit deviation display section 38 are provided. Further, below the combination weight display section 34, from the left side, an overage indicator light 40, an appropriate amount indicator light 42, and an insufficient amount indicator light 44 are provided. Note that 46 is a setting device, which is used to set a set weight and an upper limit deviation.

As shown in Fig. 3, the analog weighing signal of the scale 22 is A/D.
The signal is converted into a digital measurement signal by the converter 48 and supplied to the microcomputer 50. The microcomputer 50 is also supplied with the set weight and upper limit deviation set by the setting device 46, and signals are also supplied from each detection switch 52, shortage selection switch 54, and overage selection switch 56. Each detection switch 52 supplies an H level signal to the microcomputer 50 when an article is placed on the corresponding receiving section 26 .

The shortage selection switch 54 instructs the closed microcomputer 50 to select the insufficient combination if there is a combination that is insufficient as a result of the combination calculation to be described later. It is something to give. When the overload selection switch 56 is closed, it instructs the microcomputer 50 to select an overload combination if there is no suitable combination as a result of the combination calculation. It is.

As is well known, the microcomputer 50 is a KCPU, R
Includes AM and ROM. A program to control the CPU is written in the ROM, and according to the CPU program, it takes in external data such as the above-mentioned digital weighing signals and performs arithmetic processing while exchanging data with the RAM 38. Based on the processing results, the scale indicator light 28, acceptance indicator light 30, weight display section 32,
Signals are supplied to the combination weight display section 34, set weight display section 36, upper limit deviation display section 38, overload indicator light 40, appropriate amount indicator light 42, and shortage indicator light 44. Although the input/output ports are omitted in FIG. 3, the above-mentioned data acquisition and signal transmission are performed via these input/output ports.

Next, the program will be explained with reference to FIGS. 4 to 6. Now, the set weight A and the upper limit deviation U have already been set by the setting device 46, and are displayed on the set weight section 36 and the upper limit deviation display section 38, and are displayed on the mounting table 24 of the NL22.
, it is assumed that no article is placed δ in each receiving section 26, and the appropriate quantity flag, excess quantity flag, and shortage flag are respectively O.

In this state, it is determined whether the digital measurement signal W is O (step 00). This judgment is based on the above premise.
Repeat O. Eventually, when the article is placed on the platform 24, the determination in step 100 becomes NO, and it is determined whether the weighing signal W is stable (step 102), and the process continues in step 1 until it becomes YES.
Repeat step 02. If the determination in step 102 is YES, the weighing signal W is read (step 104), and a lighting signal is supplied to the scale indicator light 28 (step 106). As a result, the scale indicator light 28 lights up. Next, weight display section 3
2, the weight is displayed (step 108).

Then, a combination calculation is performed (step 110).

This combination operation is performed in the RAM of the microcomputer 50.
The weight of the article on the platform 24 of the scale 22 is expressed as 21
l-1 combinations, and from these combinations, select the first combination whose combined weight is equal to or greater than the set weight A and is closest to it, and the second combination whose combined weight is smaller than the set weight and is closest to it. It is something to do.

This combination calculation is performed according to the flowchart shown in FIG. First, it is determined whether the weight is stored in the weight storage area (Step 1U2). As mentioned above, there are only articles on the platform 24 of the scale 22, so
This judgment becomes No. Then, it is determined whether the weighing signal W is greater than or equal to the set weight A (step 14). If this determination is YES, W is stored as the first combined layer C (step 116). Only the digit corresponding to scale 22 is
The code D with "Y" is stored as the first combination Ml (step 118). Note that the code will be described later. Further, if the answer in step 114 is NO, W is stored as the second combined weight C2 and step 120
J, store the code D as the second combination M2 (
Step 122).

Then, it is determined whether Ml exists (step 12
4). Generally, the weight of the article fed to the scale 22 at one time is smaller than the set weight A, so this judgment dN
o, the shortage flag F1 is set to "1" and step 12
5, remember CW2 as the optimum weight C/! - Step 126), store M2 as the optimum combination for 1st printing; step 128), display C on the combination weight display section 34; step 130), set CWI, CW 2, Ml, and M2 to all "0" (step 132); ). If the article is placed only on the scale 22, then the combination calculation ends.

Then, depending on which of the shortage flag Fl, the appropriate amount flag F2, and the excess amount flag F3 is "1", it is determined whether the amount is appropriate, excessive, or insufficient (step 162).

Since it is now determined that there is a shortage, a lighting signal is supplied to the shortage indicator light 44 (step 168), and the shortage indicator light is turned on.

Then, a blinking signal is supplied to the indicator lights 28 and 30 of the tsubo 24 and (or 9 receiving portions 26) constituting the optimum combination M to blink them (step 170). However, currently only the scale indicator light 28 is blinking. Next, it is determined whether any of the switches 52 are closed (step 172). That is, it is determined whether the article has been transferred from the scale 22 to the receiving section 26.

If this judgment is No, at step nearer 3, the weighing signal W
Determine if there is a K change (Step Near 3).

If this determination is No, the process returns to the pad 72.

If the judgment 1tf in step 172 is YES, a lighting signal is supplied to the receiving section 30 corresponding to the closed switch 52 (step 174), which is turned on to indicate that the article has been transferred. Then, the weighing signal is stored in the weight storage area corresponding to the closed switch 52 (step 1
76), return to step 100.

Then, when a new article is placed on the platform of the scale 22, a combination calculation is performed in step 110 via steps 100, 102, 104, 106, and 108.

In this combination operation, the judgment in step 112 is YES.
becomes. Then, the 1 counter is set to 1, and the ULF flag is set to 1.
Both LLF flags are set to 0 (step 134). Next, one code is read out (step 135). Here, one code has digits equal to the total number of the scales 22 and each receiving part 26, that is, 11 digits, and for example, the scales 22 to be included in the combination
Or, the digit corresponding to each receiving section 26 is set to "1", and the digit corresponding to the scale 22 or each receiving section 26 that is not allowed to participate is set to "0".
The code of (211-2) is stored in advance from the case where the receiving part 26 which becomes the scale 22 participates in the combination to the case where all the tsubo 22 and each receiving part 26 are combined. .

Each code is numbered from 1 to 211-2, and the code having the number corresponding to the count value of one counter is read out. Then, the combined weight JIfkCW is calculated by adding the weighing signal from the scale 22 and/or the note in the storage area corresponding to the digit "1" in the read code (step 136). .

Next, the set weight A is subtracted from the combined weight CW, and it is determined whether this subtracted value is 0 or more (step 137). If this determination is YES, determine whether the ULF flag is "1" (step 138); if NO, set the ULF flag to 1 (step 39), and store the combined weight CW as the first combined weight CW1. Step 140
), the subtraction value obtained by subtracting the set weight A from the combined weight CW is stored as the allowable upper limit deviation UL (step 141),
1 code is stored as a first combination Ml (step 142).

Then, increment the counter by one (step 143).
, 1 counter is one value larger than n (2+1 2 ) (step 144). This judgment is NO
If so, return to step 135, step 136.1
37. Execute 138. Therefore, when the combined weight CW becomes equal to or higher than the set weight A for the first time, the combined weight CW at that time is stored as the first combined weight CW1, the allowable upper limit deviation UL is stored, and the 1 code at that time is stored as the first combined weight CW1. It is recorded as a combination.

After such a memory is made, another combination M
When the weight exceeds the set weight, the judgment in step 138 is that YF
2S (first, in step 139, the ULF flag is set to “1”).
'', it is determined whether the subtracted value obtained by subtracting the set weight A from the combination weight CW is less than or equal to the allowable upper limit deviation UL (step 145). If this determination is YES, steps 140.141.142.143 are executed. As a result, the first combination M amount CW 1 is closer to the set weight than the previous combination weight, and the allowable upper limit deviation U
L is closer to po than ever before. Note that if the determination in step 145 is No, step 143 is immediately executed. Therefore, when the count of 1 counter reaches n+1, that is, when all the codes have finished generating,
The first combination weight CW l must be greater than or equal to the set weight, but must be close to this, and the code at this time is the first combination M
It is stored as l.

If the determination in step 137 is NO, a check is made to see if the LLF flag is "1" (step 146).

If this judgment is No, the LLF flag is set to "1" (step 147), the combined weight CW is stored as the second combined weight (step 148), and the subtracted value obtained by subtracting the set weight A from the combined weight CW is acceptable. Lower limit deviation L
L (step 147), and the one code at that time is stored as the second combination M2 (step 150).
), perform steps 143 and 144. Therefore,
Similarly to the above, when the combined weight CW becomes smaller than the set weight for the first time, the combined weight CW at that time is set as the second weight.
The subtracted value obtained by subtracting the set weight A from the combined weight at that time is the allowable lower limit deviation LL.
The first code at that time is the second combination M
2 is stored as δ.

After such memorization, if the judgment in step 137 becomes No, the judgment in step 146 becomes YES (because the LLF flag was previously set to "l" in step 147), and the combined weight CW Step x to determine whether the value obtained by subtracting the set weight from is greater than or equal to the allowable lower limit deviation LL.
5: h), if YES, step 148.149.1
Execute 50. This allows the second combined weight JICW
2 is closer to the set weight than the previous combination weight, and the allowable lower limit deviation is closer to O than before. Note that step 15
If the determination in step 43 is NO, step 43 is immediately executed. Therefore, when all the codes are read out, the second combination weight CW2 is smaller than the set weight but close to it, and the code at that time is stored as the second combination M2.

Once all the codes have been read, step 124 is executed. If this determination is No, steps 125.126.128.130.132 are executed as described above.

If the determination in step 124 is YES, the above combination for the set weight is the first combination Ml, so the first
It is determined whether the value obtained by subtracting the set type iA from the combined weight CW1 is less than or equal to the upper limit deviation U (step 152). If YES, it is within the allowable upper limit, that is, suitable↑, so the suitable 1 flag F2 is set as rlJ (step 153), and the first
The combination weight i CWl is recorded as the optimal combination weight C (step 154), the first combination Ml is stored as the optimal combination M (step 155), step 13
0.132 is executed and the combination operation is completed.

If the determination at step 152 is No, it is determined whether there is a second combination M2 (step 156). NO
If so, there exists only a quantity exceeding the permissible upper limit, that is, a quantity exceeding 1, so set the excess quantity flag F3 to rlJ and step 157), step 154.155.13
0.132 is executed and the combination operation is completed. If the determination at step 156 is YES, it means that there is an excess amount and an insufficient amount. Therefore, it is determined whether the switch 53 is closed, that is, whether the missing item is selected (step 158). If YES, steps 125, 126, 128, 130, and 132 are executed, and the combination operation ends. If the determination in step 158 is NO, it is determined whether the switch 54 is closed, that is, whether the excess amount is selected (step 159). If this determination is YES, step 157.154.1
55.130.132 is executed to complete the combination operation. If Th, IO, it is determined whether the absolute value of the deviation between CVt+1 and A is greater than the absolute value of the individual difference between CW2 and A (step 160). If this decision is YES
Then, the second combination weight ffl CW 2 is the set weight A
It's close, so step 125.126.128.1
30 and U 32 are executed to complete the combinational operation. if,
If the determination in step 160 is No, the first combination weight CWI is closer to the set weight A, so step 15
7.154.155.130.132 is executed to complete the combination operation.

When the combination calculation is completed, a determination is made in step 162, but since articles are currently placed on only the scale 22 and one receiving section 26, even if the switches 54 and 56 are open, there is no shortage. There is a high probability that the judgment will be made, steps 168, 170, 172, 173, 174, 176 are completed, and the articles on the scale 22 are newly transferred to the receiving section 26, and steps 100, 102, 104, 106, 10B, 11
By performing 0, a new article is placed on the scale 22, and a combination calculation is performed after weighing.

Thereafter, in the same manner, each time a shortage is displayed, an article is transferred to the receiving section 26, a new article is supplied to the scale 22, and a combination calculation is performed. Eventually, the decision at step 162 will become appropriate. Then, a lighting signal is supplied to the appropriate amount indicator lamp 42 (step 178), which lights up to indicate that there is a combination of appropriate amounts. Then, a step unit 80) supplies a blinking signal to the indicator lights of the scales 22 and/or the receiving section 26 that make up the optimum combination Ml, causing them to blink. or) instruct the receiving section 26. And with this instruction,
The scale 22 and/or receiving section 26 where the worker was instructed
remove items from The switch 52 of the removed receiving portion 26 is closed. Therefore, in step 18, it is necessary to judge whether all the switches 52 of the receiving section 26 constituting M have been fully opened.
2), if No, repeat this step 182 until YES. If YES, the stored value in the weight storage area corresponding to the optimal combination M is erased and the process returns to step 100. In this case, if the optimal combination M includes the scale 22 and the item on the scale 22 is taken last, the process moves to step 100 before the items are removed, so the item on the scale 22 is taken first.
You can take it from 2. Otherwise, step 182
If the optimal combination M includes the scale 22, YES should be determined when W becomes 0 and all the switches 52 corresponding to the receiving sections 26 forming M are opened. .

In this way, the article is transferred from the scale 22 to the receiving section 26,
While a new article is placed on the scale 22 and the combination calculation is repeated, if the switches 54 and 56 are open, or if only the switch 56 is closed, step 162
The judgment may be over 1.

At this time, a lighting signal is supplied to the over-dose indicator lamp 40 (step 186) to indicate that there is an over-dose. Thereafter, the process goes through step 170 and then the decision in step 172 is made.

At this time, the articles on the scale 22 may be moved to the receiving section 26, a new article may be placed on the scale 22, and the combination operation may be performed again, but it is also possible to reduce the number of articles on the scale 22 to some extent and perform the combination operation again. If you try, you might be able to find a suitable combination. In particular, for combination weights that result in excessive amounts, the combination weight display section 34
By looking at this display, you can determine how much reduction you need to make, and if the optimal combination at that time includes a scale 22, you can take the goods from that scale 22 based on the display. The heat storage properties are high so that you can get the right amount of combination. Therefore, when the article is removed from the scale 22, the determination at step 173 becomes YES, and the process moves to step 102, and after this becomes YES, step 104.10
6. A combinational operation is performed via U08. This method also applies in the case of shortages.

Note that after the articles are removed from the scale 22 and the receiving section 26 in this manner, the articles are weighed again by the scale 22 and a combination calculation is performed.

The second example is the same as the first example except that the determination of insufficient, appropriate, and excessive amounts is different. In the first embodiment, suitable 1
There is a possibility that a combination of the following can be obtained with a small number of articles, for example, articles placed on the scale 22 and one or two receiving sections 26. At this time, if the combination calculation is performed with more articles placed on the receiving section 26, the appropriate amount combination weight may even approach the set weight. Therefore,
In step 1, it is determined whether the number of closed switches 52, that is, the number of articles transferred to the receiving section is greater than or equal to a predetermined value m.
88), if YES, steps 152 and subsequent steps are executed as in the first embodiment. If No, the height obtained by subtracting the set weight A from the first combined weight 1cWx is the allowable upper limit deviation U.
It is determined whether the value is less than or equal to a value obtained by subtracting a predetermined amount α from the sum of α (step 190). In other words, it is determined whether the appropriate amount falls within the range even if the range is narrowed. If YES, the amount is appropriate, so the process moves to step 153; if NO, the amount is excessive, so the process moves to step 156.

In the above embodiment, even when no article is supplied to the receiving section 26, the receiving section 26 is used as a combination target. good. In that case, for example, the order in which the articles are placed on the receiving section 26 is determined, and the code used when the article is placed on the first receiving section 26 is the code used when the article is placed on the first receiving section 26. A 10th type of code is prepared in advance, such as a code used occasionally, and the switch 5
The type of code may be changed depending on the number of closed sections. Further, the combinational calculation method is not limited to the one shown in the above embodiment, and any known combination calculation method can be used.

For example, the weight closest to the set weight between the set weight A and the value obtained by adding the upper limit deviation U to this weight may be selected from the beginning. In that case, there is no need to judge whether the amount is appropriate, insufficient, or excessive. Further, in the above embodiments, weighing with a scale, moving the article to the receiving section, and removing the article from the scale and the receiving section were performed manually, but they may be performed automatically. still,
Although only one scale 22 is provided, multiple scales are provided, and each time an article is weighed on these scales, a combination calculation is performed.If the optimal combination is still not obtained, articles are transferred from these multiple scales to each receiving section. Alternatively, a new article may be weighed using a scale and a combination calculation may be performed.

Effects> As described above, according to the present invention, instead of performing a combination operation when articles are supplied to all receiving sections, they are counted by a scale and then combined every time the measured value becomes stable. Since the calculation is performed, the time required to obtain an acceptable combination can be reduced.

Also, since we perform combinatorial calculations every time we weigh,
By looking at the changes in the optimum combination polymerization, it can be determined to what extent an acceptable combination can be obtained by feeding the article to the receiving section.

[Brief explanation of drawings]

Fig. 1 is a groove diagram of a combination weigher according to the present invention, Fig. 2 is a plan view of a first embodiment of the combination weigher according to the invention, Fig. 3 is a block diagram of the first embodiment of the combination weigher according to the invention, and Fig. 4 is an overall flowchart of the first embodiment, FIG. 5 is a flowchart of the combination calculation of the first embodiment, and FIG. 6 is a flowchart of a part of the combination calculation of the second embodiment. 2... Scale, 4... Receiving section, 6... Storage area, 8...
...Storage means, lO...Combination calculation means, 12...
Stable detection means. Figure 1 Figure 20 Go to 3rd shoulder 6 times TzV-1bb

Claims (1)

[Claims] (1) At least one scale that weighs articles, a plurality of receiving sections that respectively receive the articles weighed by the scale, and a storage area that corresponds to each of these receiving sections. storage means for receiving and storing the weighed value of the article from the scale when the section receives the article, and at least the weighed value of the article on the scale or the stored value in each of the storage areas; combination calculating means for variously combining the stored values, which are the weighing values of the articles, and selecting a combination whose total weight is an allowable value from among these combinations; A combination weigher comprising stability detection means for energizing calculation means.