JPH0518326Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a storage device having multiple openings such as a sorting shelf. The frontage to be picked is indicated by the lighting of an indicator light based on a command from a controller such as a controller, and after picking is performed at the designated frontage, a confirmation switch is activated to check whether the frontage to be picked is correct or not. The present invention relates to a storage device that prevents picking mistakes by determining whether or not the picking error occurs using a controller.

[Conventional technology]

In a parts warehouse of a manufacturing factory, an extremely large number of parts are stored in sorted shelves by type. When picking parts from a sorting shelf, it is customary to take out multiple types of parts depending on the model to be manufactured, and it is not an easy task to accurately pick out multiple types of parts from the many openings of the sorting shelf. Therefore, recently, a picking system using a personal computer has been developed, as seen in "Unmanned Technology" January 1986 issue (Ryutsu Kenkyusha), p. 71~, and it has come to be used in many storage devices. Ta.

For example, as shown in FIG. 3 A and B, each frontage 101, 1
Frontage units 1, 2, . . . are attached to the frontage units 1, 2, . The operation is simple; by inserting a card with the name of the model to be manufactured into the controller 13, the frontage where the necessary parts are stored can be changed to the frontage unit 1, 2, etc.
Instructions are given by lighting up the LED, etc. After picking according to this instruction, when the confirmation switch PB is pressed, the controller 13 determines whether the frontage where the switch PB was pressed matches the frontage where the instruction was issued, When there is a match, the display and other PB lights are turned off, and when there is a mismatch, a warning is issued to prevent picking mistakes.

[Problem that the invention attempts to solve]

However, in such a picking system, the controller 13 instructs each frontage unit 1, 2... to pick the target frontage, and on the other hand, each frontage unit 1, 2... This must be communicated to the controller 13. For this reason, the controller 13 and each frontage unit 1,
It is necessary to connect the terminals 101, 102, .

For example, as shown in FIG. 3C, two sets of eight signal lines 200 are used to connect each frontage unit 1, 2...
If two ports P1 and P2 consisting of an 8-bit bit setter are provided in..., 64 (8 x 8) ports can be connected in series without connecting the controller 13 and each frontage unit 1, 2... in parallel. Frontage units 1, 2...
...can be identified at the same time, but there are still 8 x 2 signal lines for each input line and output line.
00, and there are 32 signal lines 200 in total.

In addition, from the controller 13, the frontage units 1, 2...
When trying to monitor the signals sent to the controller 13 on the side of the controller 13, the controller 13 and the frontage units 1, 2...
...Two more sets of 16 signals are required between them, making the wiring even more complicated.

The present invention provides a storage device that reduces the number of signal lines by half by sharing the input line and output line in a picking system, and also allows monitoring with a controller using the halved signal lines. .

[Means for solving problems]

Figures 1A and 1B show the configuration of an example of a storage device in which the present invention is implemented. Figure 1A is a communication system diagram showing the overall structure of the picking system, and Figure 1B shows the configuration of the device, especially the control circuit. FIG.

To explain the characteristic configuration of the device of the present invention with reference to both figures, the frontage units 1, 2... (FIG. 3A,
(see B) is a first logic circuit 101 that lights up the indicator light LED when two ports P1 and P2, signals from the ports P1 and _P2 , and a lighting command signal from the controller 13 are input together; Port P1,
A second logic circuit 102 that turns off the indicator light LED when both the signal from P2 and the turn-off command signal from the controller 13 are input, and ports _P1 and P2.
The activation signal is connected to the output line of port P1,
A confirmation switch PB is provided which outputs an output to the controller 13 via P2.

The controller 13 (see Fig. 3 A) such as a personal computer has two output ports PO in addition to an output port PO3 for outputting a lighting command signal and a lights-off command signal to each frontage unit 1, 2...
1, PO2 and two input ports PI1, PI2,
The control circuit 14 includes a control circuit 14 such as a CPU.

The control circuit 14, as shown in FIG.
a selection unit 22 that selects and stores a picking target frontage based on an input signal; an output unit 23 that receives the output of the selection unit 22 and outputs the target frontage to output ports PO1 and PO2 and outputs a lighting command signal; A determining section 26 inputs the activation signal of the confirmation switch PB inputted from the units 1, 2, . a comparison unit 27 that compares the frontage determined by the determination unit with the frontage determined by the determination unit; and an erasing unit 28 that deletes the data stored in the selection unit when the widths compared by the comparison unit 27 match.
The frontage targeted for deletion is output to the output ports PO1 and PO.
2 and outputs a light-off command signal, and an alarm section 30 that outputs an alarm signal when there is a mismatch, if necessary.

And port P of each frontage unit 1, 2...
1, P2 are the output ports PO1, PO2 of the controller 13
and line L for input ports PI1 and PI2.
1, connected at L2.

[Effect]

By reading the model or necessary items into the controller 13 using a card reader or the like, the code of the frontage where the necessary items are stored is output from the control circuit 14 to the output port.
While output to PO1 and PO2, output port PO
3 outputs a lighting command signal. Line L
1, L2 and ports P1, P2 have the structure shown in FIG. 3C, for example, the output port PO
1. In the frontage unit of the code corresponding to the code output from PO2, the output signal is output from port P1,
A signal is input to the first logic circuit ₁₀₁ via P2, and a lighting command signal is also input from the output port PO3, so that the indicator light LED is lit.

The code is transmitted from the frontage unit whose indicator light LED is lit to the controller 13 via lines L1 and L2.
Since the signal is input to the input ports PI1 and PI2 of the controller 13, it is possible to monitor the signal by the controller 13.

Picking is performed according to the lighting of the indicator light LED, and when the confirmation switch PB is activated, a current flows through the switch PB, and the frontage code signal that activated the switch PB is transmitted through ports P1, P2 and lines L1, L2. This is generated at the input ports PI1 and PI2 of the controller 13, and the controller 13 determines the opening where the switch PB is activated. switch
If the frontage in which the PB has been activated is correct, the control circuit 14 outputs the code signal and a light-off command signal, and these are input to the second logic circuit ₁₀₂ of the frontage unit that is currently lit. Indicator light LED
goes out.

If the switch PB is activated in the wrong frontage, the indicator light LED will not go out and an alarm will be issued if necessary.

In this way, in the device of the present invention, even though the input/output line connecting the controller 13 and the frontage units 1, 2, . . . A code signal is sent from the frontage units 1, 2... to the controller 13.
A frontage code signal for picking confirmation is transmitted to the machine, thereby enabling accurate picking work. Furthermore, the controller 13 can also monitor the code signal of the target frontage.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1A and 1B.

According to Figure 1A, each frontage unit 1, 2...
The ports P1 and P2 provided in the 8-bit bit setter are 8-bit bit setters, and as shown in FIG. Frontage 1
01, 102... can be distinguished.

The outputs of ports P1 and P2 are logic circuits 10 ₁ and 1
A lighting command signal is input to the logic circuit ₁₀₁ through the lighting line ₁₁ , and a lighting command signal is input to the logic circuit 101 through the lighting line 11.
0 ₂ , a lighting command signal is inputted from the controller 13 via the lights-off line 12. The confirmation switch PB is connected to ports P1 and P2.
is connected between the output line and GND through a diode.

The output of logic circuit ₁₀₁ is input to the S terminal of FF (set reset flip-flop), and
The output of ₀₂ is input to the R terminal of FF, and the output from the Q terminal is input to the indicator LED.

The controller 13 is a personal computer system, and includes a CPU as a control circuit 14. The CPU sends and receives signals to and from the ROM, RAM, and floppy disk, and also inputs signals from the outside via the input port PI, performs calculations based on a predetermined program, and outputs the signals from the output port PO. It is now output.

Signals from the keyboard are input to input port PI, signals from frontage units 1, 2, etc. are input via input ports PI1 and PI2, and interrupt signals are input via input port PI3.
A signal from the guard reader is input via input port PI4.

In addition to the CRT, the output signal from the output port PO is sent to the ports P1 and P2 of the frontage units 1, 2, etc. via the output ports PO1 and PO2.
Furthermore, an alarm signal is sent to the alarm device via the output port PO3, and a lighting command signal and a lights-off command signal are sent from the output port PO3 to each frontage unit 1,
2. It is now being sent to...

The port P1 provided in each frontage unit 1, 2... is the input port PI1 provided in the controller 13.
and output port PO1 by line L1, and port P2 is connected to input port PI2 and output port PO2 by line L2.

Lines L1 and L2 are connected to ports P1 and P2
Since this is an 8-bit bit setter, eight lines are used, and frontage units 1, 2...
The code signals of the frontage units 1, 2, . . . are exchanged between the controller 13 and the controller 13.

The configuration of the CPU is as shown in the block diagram of FIG. The selection unit 22 inputs the contents of the data table 1 from the floppy disk in addition to the output of the reading unit 21, selects the frontage to be picked, and outputs it to the output unit 23.
and output to the comparison section 27. The data table 1 shown in FIG. 7B shows that when the model to be manufactured is No. 1, the necessary parts are stored in the frontages of Nos. 14, 20, . . . .

In addition to the output of the selection section 22, the output section 23 inputs the contents of the data table 2 from the floppy disk, outputs the code of the frontage to be picked, and inputs a lighting command signal. Data table 2 shown in the figure outputs a signal of 1 (8 digits) in binary from output port PO1 when the frontage to be picked is No. 1, and outputs a signal of 1 (8 digits) in binary from output port PO2. digit) is output.

Now, suppose that the output port PO1 passes through the line L1 to each frontage unit 1, 2...
If a signal of 1 is sent from the output port PO2 through the line L2, as is clear from FIG. Logic circuit 10 ₁ from ports P1 and P2 only in the unit
A signal is input to and 10 ₂ . The logic circuit ₁₀₁ further receives a lighting command signal from the lighting line 11.
Since the input is made through , the indicator light LED lights up in the No. 1 frontage unit.

Even when there are multiple frontages to be picked, the lines L1 and L2 can be connected from the controller 13 to the lines L1 and L2 without confusing the signal.
It is transmitted to each frontage 1, 2, etc. through.

The CPU also receives signals from the input ports PI1 and PI2 at the detection section 24, and sends the signals received at the detection section 24 to the reading determination section 26 at the second reading section 25. The signals input to input ports PI1 and PI2 are:
Confirmation switch in frontage units 1, 2...
This is a signal sent from ports P1 and P2 when PB is pressed.

Now, if the confirmation switch PB is pressed in the frontage unit No. 1, current will flow through it and the code for ports P1 and P2 will be 1 in binary.
(8 digits) signals appear at input ports PI1, PI2 through lines L1, L2.

The determination unit 26 inputs this code signal to the input unit 24,
The information is input through the reading section 25 and compared with the contents of the data table 3 input from the floppy disk.
The frontage units 1, 2, etc. that received the input signal are determined. Data table 3 shown in Figure 1B
indicates that when receiving a signal of 1 (8 digits) in binary from PI1 and 1 (8 digits) in binary from PO2, the frontage from which the signal was sent is No. 1. The code signal of the frontage determined in this way is sent to the comparator 2.
Sent to 7.

The comparing section 27 compares the code signal of the frontage unit sent from the determining section 26 with the code signal of the picking target frontage sent from the selecting section 22, and when there is a matching frontage, sends a signal to the erasing section 28. send. Upon receiving the signal, the erasing section 28 sends a signal to the selection section 22 to erase the matching frontage from among the frontage codes stored therein, and sends the code signal to the second output section 29. The output unit 29 that received the signal outputs the code signal to the output port P1,
At the same time, it outputs a light-off command signal to output port PO3.

Suppose that an indicator light is installed in the No. 1 frontage unit.
Assuming that the LED is lit, the code signal is transmitted from output ports PO1 and PO2 to lines L1 and L.
Ports P1 and P2 of No. 1 frontage unit via 2
This input signal and the lights-out command signal are input to the second
Since it is input to the logic circuit 10 ₂ of F, F
will be reset and the indicator LED will turn off.

When there is no matching frontage, the indicator light LED is not turned off, and a signal is sent from the comparison section 27 to the alarm section 30 to activate an alarm device such as a buzzer.

FIGS. 2A and 2B are flowcharts showing the operation of the CPU, in which steps are performed in the reading section 21, ~ are performed in the selection section 22, steps are performed in the output section 23, step ' is performed in the detection section 24, and ' is performed in the second reading section 23. Part 25,
'' is the determination section 26, '' is the comparison section 27, ''
is performed by the erasing section 28, and '' is performed by the second output section 29. The operation of the apparatus shown in FIG. 1 will be explained in order with reference to the figure.

1 Frontage instruction When the model number is specified (), the picking target frontage corresponding to the model number is called from data table 1 () and stored ().If the number of picking target frontages is C, then The frontage code of the first frontage to be picked is called from the data table 2 (~), outputted to the output ports PO1 and PO2 (), and a lighting command signal is outputted to the output port PO3 (). At this time, PO1,
Only 1 bit of data is output to each PO2, and the port P set to the same as this data
1, only one frontage with P2 is set. At the same time, the lighting line 11 becomes operational, and the indicator light LED lights up in the selected frontage. This is,
This process is repeated for the number C of frontages to be picked. At this time, lines L1 and L2 are in an output state.

2. Picking The worker searches the opening for the lit indicator light LED, picks out the parts from there, and presses the confirmation switch PB each time.

3 Detection of picking frontage When confirmation switch PB is pressed, port P1,
Data R is sent to input ports PI1 and PI2 via P2.
1, R2 occurs (''). This data R1,
For R2, a base-2 logarithm calculation is performed and is valid only when the calculated value is an integer ('). As a result, it is determined that only the confirmation switch PB for one frontage has been pressed, and data confusion is prevented. At this time, lines L1 and L2 are in an output state.

4 Preventing picking mistakes If a frontage number that matches both PI1 and PI2 is selected in data table 3, and this is one of the frontage data to be picked, it is determined that normal picking has been performed (''). Then, this frontage code is read and transmitted to PO1 and PO2 (''), and a lights-out command signal is sent to PO3.
('), the indicator light LED that was lit turns off, and at the same time, the code for this frontage is erased from the memory code ('). If you press the confirmation switch PB for a frontage that is not subject to picking, the indicator light will not go out and a warning will be issued. At this time, the lines L1 and L2 are also in the output state.

[Effect of idea]

As is clear from the above explanation, in the storage device of the present invention, although the input line and output line between the frontage and the controller are shared, signals can be reliably exchanged between the two. This not only gives accurate picking instructions to the frontage, but also allows the controller to check the frontage where picking has been performed, ensuring error-free picking work.
Since the input and output lines are shared, the number of lines is small, and no transmitter/receiver is required on the frontage side, which greatly simplifies the circuit configuration, which not only reduces cost but also improves noise resistance and response. This has great effects in terms of saving time, preventing incorrect wiring, etc.

[Brief explanation of the drawing]

Figures 1A and 1B are circuit diagrams showing the communication system of an example of a storage device implementing the present invention.
CPU control block diagram, Figure 2 A and B are
FIGS. 3A, 3B and 3C are a flowchart showing the control operation of the CPU, an overall view showing the general structure of the storage device equipped with the picking system, an external view of the frontage unit, and a circuit diagram of the communication system. In the figure, 1, 2...frontage unit, 100...
...Storage, 101, 102...Width, 10 ₁ ,
10 ₂ ... logic circuit, 11 ... lighting line, 12
... Unlit line, 13 ... Controller, 14 ... Control circuit (CPU).

Claims (1)

[Scope of Claim for Utility Model Registration] A picking command signal is output from the controller 13 to the storage 100 which has a plurality of frontages 101, 102, and each frontage is equipped with an indicator light LED and a confirmation switch PB, and Each frontage 101, 102... has two ports P in a storage device that turns on the indicator light LED and turns off the indicator light LED to confirm the picking operation by operating the switch PB for checking the frontage to be picked.
1, P2, signals from ports P1, P2 and controller 13
When the lighting command signal from the
A first logic circuit ₁₀₁ that lights up the LED, signals from ports P1 and P2, and a controller 13
The indicator light turns off when the lights-off command signal from
The controller includes a second logic circuit ₁₀₂ that turns off the LED, and a confirmation switch PB that is connected to the output lines of ports P1 and P2 and outputs an activation signal to the controller 13 via ports P1 and P2. 13 has two output ports PO3 in addition to the output port PO3 for the lighting command signal and the lights-off command signal.
1, PO2 and two input ports PI1, PI2,
The control circuit 14 includes a selection unit 22 that selects a frontage to be picked based on an input signal, and receives the output of the selection unit 22 and outputs the target frontage to output ports PO1, PO2 and sends a lighting command signal. an output unit 23 that outputs, and frontages 101, 102...
a determination unit 26 that inputs an activation signal of the confirmation switch PB input from ... through ports P1 and P2 and determines the frontage in which the confirmation switch PB is activated;
A comparison unit 27 compares the frontage stored in the selection unit 22 with the width determined by the determination unit 26, and when the widths compared by the comparison unit 27 match, the frontage code is deleted from the memory code of the selection unit 22. Erase section 2
8, and a second output section 29 that outputs the frontage code to be erased to the output ports PO1, PO2 and outputs a light-off command signal, and the ports P1, P2 of each frontage 101, 102...
are the lines L1, L2 for the output ports PO1, PO2 and input ports PI1, PI2 of the controller 13.
A storage device characterized in that the input/output lines are shared between each frontage 101, 102, . . . and a controller 13.