JPS5815833B2 - Vending machine malfunction display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a fault display system that detects faults in vending machines using sequence control and, if a fault occurs, can easily display the location of the fault.

One embodiment will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram illustrating the apparatus of the present invention, and first, the failure detection method will be explained in detail.

The control device CPU1 is a device that decodes and executes commands and determines the results. It integrates and controls the operations of all devices in the vending machine, and has a read-only memory ROM (or PR
OM) 2 is a storage device that stores programs necessary for the arithmetic processing of the CPU 1, a read/write memo IJ-RAM 3 stores the results of this arithmetic processing, and an input/output device 1106.
is directly connected to each device of the vending machine so that signals can be sent and received between each of these devices and CPU I.

Therefore, the ROM 2 stores a program for searching for locations to be inspected and a code assigned in advance to each inspection location. A code corresponding to the location is read from the ROM 2 and output to the RAM 3, and the RMA 3 stores it.

In this embodiment, the device of the vending machine that searches for malfunctions includes a coin switch 7 that sorts inserted coins and outputs a coin insertion signal for each type of coin, and a coin switch 7 that outputs a coin insertion signal for each type of coin, and a coin switch 7 that selects coins that have been inserted and outputs a coin insertion signal for each type of coin. A bend end sensor 8 detects when the product has been discharged to the point where the product can be collected, a product discharge carrier switch 9 detects whether the motor for discharging the product is running, and a change dispensing device dispenses change when change is required. A change subtraction sensor 10 outputs a subtraction signal to a counter for calculating an amount each time, and a change dispensing sensor 11 detects whether change is dispensed.
It is connected to the.

Next, the method of detecting the defective K will be explained with reference to the flowchart shown in FIG.

The flow starts with the initial settings when the power is turned on, but in the first mode, the display operation switch 4, which will become clear later, is turned OFF.
If it is determined that the vent end sensor 8 is FF and is OFF, the mode shifts to the second mode and the third mode, and a failure of the vent end sensor 8 is detected.

The bend end sensor 8 is, for example, a light emitting diode (LE).
D) and a phototransistor (PT), which is installed near the sales outlet and outputs a pen-end signal when it detects the arrival of the product ejected by the product ejection device, indicating that the sales operation has been completed.

Therefore, normally the light emitting diode is turned on and the phototransistor is turned on in response to a signal from the CPU 1, but in the second mode, the CPU 1 stops outputting the signal to clear the light emitting diode, and in the third mode, the light emitting diode is turned on and the phototransistor is turned on. As a result, it is detected whether the phototransistor is turned off or not, and a failure of the bend end sensor 8 is checked.

Therefore, if it is confirmed that the phototransistor is OFF in the third mode, it is assumed that the phototransistor is normal, and the process goes directly to the fourth mode. The code is read out, the RAM 3 stores this code as an error code, and shifts to the fourth mode.

In the fourth mode and the fifth mode, failure of the change dispensing sensor is detected.

The change payout sensor 11 is installed near the change outlet and outputs a change payout signal when it detects the arrival of change coins dispensed by the change payout device, and its configuration is the same as the bend end sensor 8, including a light emitting diode and a photo sensor. Consists of transistors.

Therefore, a failure test is performed by clearing the light emitting diode in the fourth mode and detecting the OFF state of the phototransistor in the fifth mode.

Therefore, if you can confirm OFF in the 5th mode, you can directly switch to the 6th mode.
mode, but if it is ON, the CPU 1 determines that there is a failure, stores the code of the change dispensing sensor 11 as an error code in the RAM 3 in routine R2, and shifts to the sixth mode.

The sixth mode is to check for failures such as coin switch 7 being ONL even though it is in the standby state.
If the coin input signal is output from the coin switch 7, the PU 1 determines that there is a failure, and stores the code of the coin switch 7 in the RAM 3 in routine R3.

The seventh mode is to check for a failure in the change subtraction sensor 10, and the eighth mode is to check for a failure in the product ejection carrier switch 9.The change subtraction sensor 10 and the product ejection carrier switch 9 each use approximately the same mechanism to dispense change. A cam switch that controls the operation of the motor and product ejection motor for one rotation is used to dispense one change coin and product 1 during one rotation.
Ejecting operations are performed.

The change subtraction sensor 10 and the product ejection carrier switch 9 are normally ONL, and when the motor starts rotating, it is 0FFL, and when one rotation is completed, the ONL product ejection signal or change subtraction signal is output again. If it is 0FFL in the normal state, rotation of one rotation can be guaranteed, that is, reliable ejection of products or dispensing of change coins will not be performed.

Therefore, in the seventh mode, the CPU 1 detects whether the change subtraction sensor 10 is ON and detects 0FFL.
The code is memorized, and in the 8th mode, it is detected whether the product discharge carrier switch 9 is ON and OF'PL is executed.
, it is assumed that there is a failure and the code of the product discharge carrier switch 9 is stored in routine R5.

What has been explained above is the flow of failure detection, but as mentioned above, the CPU 1 controls all operations other than failure detection, such as dispensing change and discharging products from the vending machine, so the pen-end signal, It should be noted that the change payout signal, product discharge signal, and change subtraction signal are sequentially input to the CPU 1.

In the 9th mode, if a NO is determined in any of the 3rd, 5th, 6th, 7th, or 8th modes, it is checked whether the error code is stored in RAM3, and if there is no error code, the flow returns to the initial set mode again. A series of failure detection flows are repeated.

Also, if there is an error code, the CPU moves to the initial set mode, but the CPU stops the flow in the initial set mode and does not proceed further, and then outputs a reject operation command to operate the reject device 13 and reject the input amount. control so that the sales operation does not start without accepting the request.

When the device stores the error code in the RAM 3 and is stopped in the initial set mode, the CPU 1 displays a display indicating that there is an error code by lighting the failure lamp 12.

Therefore, when the vending machine manager operates the display operation switch 4, the flow becomes the error code display routine R.

When shifting from the first mode to the error code display mode in the error code display routine R, the CPU 1 reads the error code stored in the RAM 3, displays the error code on the display 5 for a predetermined period of time, returns to the initial set mode, and stops. .

The administrator can find the location of the failure by looking at the displayed error code, but if the failure lamp 12 is lit, it means that there is another failure, and the administrator must also press the display operation switch 4. When operated, the error code display routine R is started again and the next error code is displayed on the display 5.

When the display operation switch 4 is operated in this manner, the failure lamp 12
Continue until it becomes clear.

Therefore, one error code is displayed each time the display operation switch 4 is operated.

Such error code display is a feature of the present invention, and the CPU 1
A specific example of the functions related to this operation is shown in FIG.

Flip-flop circuit FF FFFF3. FF4. FF
5 indicates the third, fifth, and third judgment modes of the failure detection flow in FIG.
This configuration corresponds to the sixth, seventh, and eighth, and when an error is determined in other determination blocks (not shown) in the CPU 1, the configuration is inverted and outputs "1" to Q.

Then, when a one-pulse display signal is input, it sequentially searches from FF to FF for an inverted one, and when it is found, the Q output "1" of that flip-flop circuit is sent to RAM3 as an address designation signal. , an error code based on this address stored in RAM3 is read and the CP
U1 converts the error code into an error code display signal having content that can be displayed numerically and outputs it to the display 5 for display.

Note that the display 5 does not need to be provided in particular, and an amount display that numerically displays the input amount or change amount can be used.

In Figure 3, FF2 and FF4 are reversed and Q is set to "1".
” is output, but the change dispensing sensor 11 and change subtraction sensor 10 have been found to be malfunctioning, and O
Since this output "1" is input to the R gate OR, the failure lamp 12 is lit.

The above-mentioned flow is stopped in the initial set mode, and when the administrator operates the display operation suite Y-4, a one-pulse display signal is input.

In AND gate A1, since the Q output of FF1 is "0", a logical product output cannot be obtained, but in AND gate A2, a logical product output is obtained since the Q output is "1", and this output is AND gate A3 corresponding to FF2. Each is output on A4 paper.

That is, after the search for FF1 is completed, the search for FF2 is performed next.

In the AND gate A3, a logical product output is obtained from the logical product output of the AND gate A2 and the Q output "1" of the FF2, and this output is outputted to the RAM3 as the address designation signal, and the fifth
The error code for the mode is read out and displayed on the display 5.

This completes the search by operating the display operation switch 4 for the first time, but the logical product output of the AND gate A3 is delayed by the delay circuit d2, inputted to the FF2 as a reset signal, and inverted, and the signal Q becomes "1". Output.

The fault lamp 12 is lit because the Q output "1" of FF4 is still input to OR q'-[)H, and the administrator knows that there is another fault and performs further display operations. The switch 4 is operated to output a display signal.

This second display signal is obtained from the AND gate A2 as described above and is output to the AND gates A3 and A4, but since FF2 was inverted in the first operation, it is the ANI) gate. A logical product output is obtained at A4, and the AND gate A5. Each is output to A6.

Since FF3 outputs "1" to the Q output, a logical product output is obtained from AND gate A6, and the AND corresponding to FF4
It is output to gates A7 and A8.

FF4 outputs 11 to Q, and AND gate A7
An AND output is obtained, this output is input to the RAM 3 as an address designation signal, an error code for the seventh mode is displayed, and FF1. FF2
．． FF3. The search for FF4 ends when the Q output of FF4 is found to be "1".

In addition, the logical product output of the AND gate A7 is input to the FF4 as a reset signal via the delay circuit d4, and in order to be inverted, the input to the OR gate OR is eliminated and the failure lamp 12
The display operation switch 4 is not operated further for clearing.

In this operation, each time the display operation switch 4 is operated, the error code can be read by sequentially detecting the flip-flop circuits that are inverted due to an error.

As described in detail above, the present invention provides a failure display system when a failure is discovered regarding a new failure detection system for vending machines that sequentially scans the inspection points of the vending machine using sequence control.

Therefore, failure inspection is normally carried out according to a coded program for the failure detection items that should be inspected for vending machines, but when a failure is discovered, an error code indicating the failure location is memorized, the failure inspection is stopped, and the display operation is performed. Since this error code is displayed when the switch is operated, the administrator can easily identify the location of the failure.

Furthermore, if there are multiple failure locations, the display can be sequentially displayed according to the program each time the display operation switch is operated, allowing the failure locations to be accurately confirmed.

[Brief explanation of the drawing]

FIG. 1 shows a block diagram of the apparatus of the present invention, FIG. 2 is a flowchart of a failure detection program, and FIG. 3 shows a specific circuit of a block for displaying an error code by the CPU. Explanation of main drawings, 1...CPU12...
・Storage device, 3... Read/write memory, 4
...Display operation switch, 5...Display device.

Claims (1)

[Claims] 1 A device that stores arithmetic processing programs including a fault search program for each component of a vending machine, and when a fault is found during execution of the fault search program, outputs the fault location as a code and runs the vending machine. A control device that sets the sales suspension state, a storage device that stores the code indicated by the control device as an error code, and a lamp that lights up based on the error code stored in the storage device, a display operation switch that outputs a display signal to display one of the codes; and a display that displays an error code that the control device reads from the storage device in response to the display signal, and the storage device A malfunction display device for a vending machine, characterized in that when an error code is stored, the error code is sequentially displayed each time the display switch is operated.