JPS6212526A - First-in first-out controlling apparatus - Google Patents

Abstract

PURPOSE:To average the staying time in a tank by providing a tank information table and a feeding and delivery order table and by correcting the order table by deleting the number of the tank which is full or vacant, from the order, when the feeding or delivery condition is not satisfied. CONSTITUTION:The captioned apparatus is constituted of a tank group equipped with the upper, intermediate, and lower limit level meters 12 installed and feeding and delivery route facilities, and controlled by a control system 7. The order on a feeding order table is renewed according to the variation of the level meter 12 and the condition on a tank information table, and an instruction is transmitted to a route operation controller 14, always referring to the contents of the renewed feeding order table. Delivery control is performed similarly for the delivery side. Therefore, the first-in first-out control is permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a first-in, first-out control device, and more particularly to a first-in, first-out control device that is most suitable for controlling a plant or the like in which objects are irregularly delivered to a given location.

[Background of the invention]

For example, animal feed is a living organism whose main component is grain. Therefore, for long-term storage, it must be handled with sufficient care regarding moisture and temperature. Therefore, it was necessary for feed mills to minimize the amount of time that food was stagnant within the plant. In addition, the same type of raw materials or products are often placed in multiple tanks.

Better to use them on a first-in, first-out basis.

Efforts are being made to reduce stagnation time and make products more uniform.

Up until now, things had been managed to some extent by people's intuition and notes, but as factories grew in size, things became difficult to manage, leading to discoloration and spoilage of products. In order to avoid such a situation, it is necessary to perform accurate first-in, first-out control, but this requires knowing the amount and time for all routes, which has been difficult to achieve. With normal equipment, accurately grasping the amount and time required mechanically installing weighing equipment for each route, and the routes and scales had to be automatically controlled, which required a great deal of effort and expense. . Therefore, even if it is simple, if first-in, first-out can be performed within the time range allowed by the product, there will be no need for human intervention and labor savings can be achieved.

[Purpose of the invention]

The purpose of the invention is to provide a first-in, first-out control device that can average out the time spent in a tank for each tank in a system that inputs and takes out products from multiple routes into a tank that stores multiple brands. Our goal is to provide the following.

[Summary of the invention]

The present invention provides brand name and charging conditions as information for each tank.
A tank information table in which dispensing conditions are registered, a loading order table that tabulates tank ranks for each brand according to the brand names and dispensing conditions in this tank information table, and It has a dispensing order table that shows the tank hierarchy, and adds the number of the tank for which the dispensing condition or dispensing condition is met according to the tank information table to the end of the sequence, and when the dispensing condition or dispensing condition is not met, the tank becomes full. The order table is modified by deleting the numbers of empty or empty tanks from the permutation, and the time during which the stored materials stagnate in each tank is averaged.

[Embodiments of the invention]

Before giving a detailed explanation of the present invention, a detailed explanation of the present invention will be given.

When inputting into a group of tanks irregularly from multiple routes, in order to accurately perform first-in, first-out, it is necessary to know the input time, amount of input, and input tank status, and to bring in data for each tank and manage shipping. . This data becomes a huge amount of data when the amount of deposits and withdrawals is small and the number of times is large.

There were difficult issues such as when to clear this huge amount of data and how much to clear.

In a normal system, a scale is often not attached to a shipment by one person, and even if one is attached, it becomes meaningless as a whole if it is not attached to all routes, making first-in, first-out control by receiving and shipping management impossible. . Therefore, the present invention focuses on the fact that even if accurate first-in, first-out is not possible, as long as the operation is repeated such that it is always first-in, first-out, it becomes first-in, first-out when viewed as a whole. From a partial standpoint, there are places where first-in, first-out is not possible, but this is because in the case of a loading route, the tank floor where the route can be loaded is determined by the equipment itself, and it does not necessarily include all tanks. to cause. Therefore, the first tank in the input order table is not full, but the intermediate tanks become full and are removed from the sequence.In this case, from the input route side, it is first in, first out by brand, but the tank Looking at the group as a whole, this is not the case. The same thing can be considered on the payout side. However, in the above case, the full tank is positioned at the end of the tanks that can be loaded, and it is registered in the payout order table and has a payout, so generally speaking, it operates on a first-in, first-out basis. . There are three primary conditions as prerequisites for performing these operations. ■Payout is performed until the tank becomes empty (level L). This is also a condition for deleting the tank floor from the payout order table, and is paired with the payout condition. ■What is the input?

Fill the tank until it is full (level H).

This is also a condition for deleting the tank floor from the input order table, and is paired with the input condition. ■The input amount and the output amount must not be exactly the same. This is just in case
If the input and output tank floors are the same and input and output are balanced, the tank table will not be updated. This is because it is not first in, first out. This can be done by changing the setting of the charging conditions so that the charging tank and the discharging tank are not the same. (When the level L changes from ON to OFF, that is, when the tank becomes empty, the official becomes available.) Through the above operations, the present invention realizes first-in first-out and averages out the stagnation time in the tank. We have achieved this.

Next, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 2 shows a flow diagram of the equipment to be controlled.

The tank has an upper limit of 1 (H) and a middle limit of 2 (M).

It consists of a tank group 4 equipped with a level meter with a lower limit of 3 (L), an input route facility 5 for inputting objects into the tank group 4, and a dispensing route facility 6 for discharging materials. A control system 7 for controlling these is shown in FIG. Control system 7
is a CR that registers the brand name, input conditions, and output conditions of the tank information table 15 mainly through the CPU (central processing unit) 9.
T8 and its control device 10. The control system 7 includes an input/output control device [11] that controls the level meter signal 12, the route operation signal 13, and the route operation control device 14, and a storage device 15 that stores various data therein. This control system 7 has a built-in program in the memory 16 that executes the processing shown in FIG. 8, and can execute a series of control operations described in detail below.

At first, irrespective of the state of the level meter 12, the tanks are sorted in descending order of the tank floor number for each tank floor registered brand in the tank information table shown in Figure 3. This is the same for both the input side and the payout side. Next, the status of the level meter 12 for each tank is read, and the tank hierarchy of the input order table of FIG. 4 and the output order table of FIG. 5 is created according to the input conditions and output conditions of the tank information table of FIG. 3. . In FIG. 3, the meanings of the numbers in FIG. 1 are as follows.

Example of input conditions O... Input is prohibited.

■...When level H changes from ON to OFF.

2...When level M changes from ON to OFF.

'3...When level L changes from ON to OFF.

Example of payout conditions 0...Payout prohibited.

1...When level H changes from OFF to ON.

2...When level M changes from OFF to ONK.

3...When level L changes from OFF to ON.

FIG. 6 shows a method of creating the input order table shown in FIG. 4 on the input side. Taking the brand name in Figure 6 as an example, if the tank information table in Figure 3 is arranged by brand, it will be 1°4.9.12. Next, when looking at the input conditions, tank No. 9 is registered as prohibited for input.

Delete this from column 111, resulting in 1.4.12.

(Refer to the input order table in Figure 4) Next, assuming that tank No. 12 is full and tank positive has been deleted, level L (lower limit level meter) 3 changes from ON to 0FFK. Since the input condition in the information table is 3, the input condition is satisfied, and tank N112 is added to the end of the permutation as shown in FIG. 6 (Tb). In addition, when the route side starts in this state, the contents of the table are displayed on the route operation control device f14 as to which tank should be poured into.
When it is necessary to connect to the root side, as shown in Figure 6 (C), send an instruction to the root side using tank stopper 1 at the top of the table, and change the contents of the table. Next, from the state where the input and V ordering table is ``1,4゜12'', input into tank 4 by a certain route, the tank becomes full, and the level becomes H1.
Assuming that is turned on, there is no more room for charging into tank 4, so delete pressure 4 from the permutations of the charging order table as shown in gXG diagram (d),
1.12. Updating the permutation of the table as described above is performed by changing a total of 12 levels and 0. Follow the conditions of the tank information table in Figure A3, and set the route to the route operation control device 14.
When the side is busy, it refers to the contents of the input order table shown in FIG. 4, which is constantly updated, and issues instructions to carry out the operation. In addition, if the number of tanks that can be loaded is mechanically limited among a wide variety of routes, the first tank stop corresponding to the route will be By instructing the route operation control device 14, similar first-in, first-out control can be performed.

As for the payout side, even if there are differences in the input conditions and the payout conditions, the same processing as the above-described input control can be performed, as shown in the explanatory diagram for creating the payout order table in FIG. 7. That is, looking at stock C shown by @5[glC, if the information table is arranged by stock as is, 2,7.10
(It is assumed that the payout condition for tank positive 13 is not satisfied). On the other hand, the level L of the 13th tank is ON-+0FF.
If K turns and the payout condition is satisfied, @Figure 7 (b)
Add tank m13 to the end of the permutation as shown in K.

In this state, when the dispensing route is started and an instruction is issued to remove the dispensing tank, the first tank floor (tank Nn1) in the permutation of tank floors is instructed to the route side as shown in FIG. 7(C). Further, when the tank becomes empty and the dispensing condition is not met, that tank M is deleted from the tank positive permutation and the entire tank is packed as shown in FIG. 7(d).

〔Effect of the invention〕

As is clear from the above, according to the present invention, the number of input routes, the number of output routes, and the operation on the route side.

First-in, first-out control can be performed regardless of the number of stops and without having quantitative information on input and output amounts. Further, this control can be performed regardless of the number of tanks.

[Brief explanation of drawings]

The IEI diagram is a block diagram showing one embodiment of the present invention. FIG. 2 is a layout diagram showing an example of the equipment flow targeted by the present invention, FIG. 3 is an explanatory diagram showing an example of the tank information table according to the present invention, and FIG. 4 is an illustration of the input order table according to the present invention. An explanatory diagram showing an example. FIG. 5 is an explanatory diagram showing an example of the payout order table according to the present invention, FIGS. 6(a) to (d) are illustrations of the creation procedure of the input order table, and FIG. 7 1a) to (d) are the payout order FIG. 8, which is an explanatory diagram of the table creation procedure, is a flowchart showing an example of processing in the present invention. l... Upper limit level meter, 2... Intermediate level meter. 3... Lower limit level meter, 4... Tank group. 5... Input equipment, 6... Output equipment. 7... Control system, 8... CRT. 9... CPU (Central Processing Unit) 16... Memo I), 10... Control device. 11... Input/output control device, 12... Level meter signal. 13... Route driving signal. 14...Route driving control device. 15...table.

Claims (1)

[Claims] 1. Injecting the stored material from multiple routes into a group of tanks each equipped with a level meter for detecting the level of the stored material,
In equipment that dispenses stored materials through multiple routes, there is a tank information table in which the brand name, loading conditions, and dispensing conditions are registered as information for each tank, and a tank information table that registers brand names, loading conditions, and loading conditions as information for each tank, and a tank information table that registers brand names, loading conditions, and loading conditions for each tank. A loading order table that tabulates the tank number column, a dispensing order table that tabulates the tank number column for each brand according to the brand name and dispensing conditions in the tank information table, and a dispensing order table that tabulates the tank number column according to the brand name and dispensing conditions of the tank information table, and Add the number of the tank for which the condition was met to the end of the permutation, and delete from the permutation the number of the tank that became full or empty when the input condition or dispensing condition was not satisfied, and then A first-in, first-out control device comprising: control means for modifying a table. 2. The first-in, first-out control according to claim 1, wherein the control means includes control for instructing the route side of the first tank number in the tank number sequence at the time of starting the input route or the withdrawal route. Device.