JPH0356318A - Abnormal dispensing preventing mechanism in coin feed device - Google Patents

Abstract

PURPOSE:To promptly detect an abnormality so as to rapidly cope with the abnormality by comparing a measured value of a fed-out pulse width of a detection signal from a coil detecting section with a lower limit value of a set standard pulse width so that an abnormal signal is issued when the measured value is smaller than the lower limit value. CONSTITUTION:A hopper sensor detects cons which are successively pushed out, and delivers a pulse signal to an interface 23 for a microcomputer 20. Then, the microcomputer 20 looks up a data table stored in memory 22 in accordance with delivered pulse signal so as to compare a fed-out pulse width with a lower limit value of a set standard pulse width. Further, when a measured value is smaller than the lower limit value, an abnormal signal is issued. With this arrangement, it is possible to detect an abnormality at an early time so as to rapidly cope with the abnormality.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application in Industry) The present invention relates to an abnormal dispensing prevention mechanism for a coin dispensing bag holder, and more specifically, to a mechanism for preventing abnormal dispensing of coins in a coin dispensing bag holder. When the pulse width of the coin is smaller than the lower limit of the Yanagi pulse width, an abnormality signal is output by 1. An abnormality in a coin dispensing device equipped with a pulse width abnormality determination processing means ``>1 {''Relating to a dispensing fat fixing mechanism It is something.

(Prior Art) Conventionally, this type of coin dispensing device has been disclosed in Japanese Utility Model Application Publication No. 53-6294 and Japanese Patent Application Publication No. 1989-57.
- 1 9 8 9 1 ``Coin dispensing device'' of a rare publication
The coin sending device J will be explained in detail with reference to the drawings.

FIG. 3 is a side view of the coin delivery device, FIG. 4A is an exploded perspective view of the coin delivery device, FIG. 4B is a back view of the coin feeding member shown in FIG. 4A, and FIG. 5 is a coin detection section. FIG. 2 is an explanatory diagram showing the operating state of a detection sensor (hereinafter referred to as a hopper sensor).

In the figure, 1 is a coin delivery device, and 2 is a coin delivery device 1.
Coin 11 connected to the 1- side of ? The hopper 3 is a motor, 4 is a reduction gear device interposed between the motor 3 and the coin delivery device 1, 5 is a motor cooling fan, A coin container for storing a coin feeding member 8, 7 has a coin capacity of 2 coins in the L part; , 7.■1 is set in the bottom month 7 1r
It is a protrusion with a notch that protrudes to one side and is provided for the purpose of positioning the coin container 6 to be held. and identified. 19 is the receiving board, hopper sensor]-
7, a sensor actuating arm 1-6, and a spring restraining roller 1-5 are provided. 61] is a depression formed on the inner circumferential surface of the lower end of the coin container 6, so that the outer circumferential edge of the coin feeding member 8 can be easily engaged and moved.

The coin sending member 8 is provided with a plurality of circular coin receiving holes 1-O (five in the illustrated example), and the size is large enough to accommodate the coins or medals to be sent. There is a size. Reference numeral 1 denotes a coin feeding arm and a coin ejecting protrusion formed on the back surface of the coin feeding member 8, 12 a coin outlet hole cut out to a certain length on the lower edge of the coin container 6, and 13 a coin ejecting protrusion 11. A hook that receives the coins being sent and changes the course of the coins to the coin exit hole.+J-
)"+", ↓4 is a coin passage through which coins are pushed out.

3. Next, the operation of the conventional coin dispensing device 1-, which is constructed as described above, will be explained. container coin storage hopper
The coins stacked in bulk in the coin container 2 enter the coin receiving hole 9 of the coin feeding member 8 in the coin container 6 by rotating the coin feeding member 8 in the coin container 6 at a predetermined pitch by one drive of the motor 3. The coins that have entered the coin receiving hole 9 are supported by the bottom member 7], and as the coin sending member 8 rotates, the sending arm 10
and the coin ejecting protrusion] 1 toward the coin exit hole 12 along the circumferential direction. The coins sent in this way hit the latch piece 3, change their direction of travel, advance radially toward the coin exit hole 12, and exit the coin exit hole 12.
] is pushed out into the coin passage 14 through the hole 12, is pressed elastically against the locking piece ]-3 by the spring restraining roller 5, and is temporarily held in the coin passage 14+. Next, the held coins pushed out into the coin passage ↓4L by the subsequent coins sent by the next predetermined pinch of the coin feeding member 8 are moved to the sensor activation arm 1. Roller 1 on the negative side of C5
6Z1 and other side using 16b as a fulcrum]. 6c rotates 1418 times clockwise and enters the recess of the hopper sensor L7, and as the other side 16c blocks the beam, the hopper sensor 17 turns "○N" and escapes.
During this period, one coin is counted. Thereafter, a predetermined number of coins are dispensed through the dispensing shoe 1-18.

In addition, the hatched portions marked A and B in FIG. 5 are the scratches on the tip of the coin ejecting protrusion 11 and the scratches on the coin outlet hole 12, which are wear caused by metal-to-metal friction caused by jagged edges on the outer circumference of the coin, etc., which will be explained later. represents the state. Further, even if the medal does not have serrations on its outer periphery, the same phenomenon of wear occurs due to friction between metals, although it is not as bad as coins.

(Problems to be Solved by the Invention) In the above-mentioned conventional coin delivery device, the hopper sensor installed in the passage through which the coins are pushed out is ``ON'' or ``○'' when the coins pass through. FF” signal and count one coin. That is, it depends on the pulse scream 1 during the "o FF" from II O N I+.

5 The pulse width must have a time period long enough to eliminate the effects of noise and chattering, and conversely, the shorter the pulse width, the higher the switching speed, which improves the operating rate of the entire device. There is a fatal limit to the length of the pulse width. Furthermore, depending on the usage period and operating conditions of the device, the coin ejecting protrusion and coin exit hole may be worn out or deformed.
Due to the life of the Hosoba sensor, the length of the extrusion stroke for coins becomes unstable and shortens, and eventually it becomes impossible to obtain the pulse width of the time required to count the number of coins. This leads to business losses due to uncounted coins being sent out. In other words, for example, even though the control unit ``2'' determines that a predetermined number of coins have been paid out, it still sends out coins! In store A, there were excess payments (overpayment abnormality) and the amount of sales could not be met. Sarashiko: The two consecutive -1 abnormalities were discovered by the person who overpaid, so if it hadn't been pointed out, the overpayment would have continued. That is, there was no provision for detecting an abnormality.

This invention was devised to solve the problems mentioned in 1.1. Coins flow continuously through the same passage, and in particular, the coin outlet hole at the bottom of the coin container and the coin ejecting protrusion on the front of the coin feeding system are affected by the serrations etc. cut into the outer circumference of the coins. This causes wear and deformation due to metal-to-metal friction (see points A and B in Figure 5), and when the coins are pushed out from the coin exit hole, the starting position of the coins moves backward, causing the hopper The range that the sensor can detect
- Since the cause is a shortening of the rake length, the lower limit of the standard pulse width at which the hopper sensor can count the number of hard 1 yen coins is preset, and the pulse width is the stroke length of the coins to be pushed out. Is there a difference when the actual measured value is smaller than the lower limit of the standard pulse width? It is an eleventh object of the present invention to provide an abnormal dispensing prevention mechanism that solves the above-mentioned problems using a pulse width abnormality determination processing means that outputs a signal.

7 (Means for Solving the Problems) -1 In order to achieve the above objects, the foreign coin dispensing prevention mechanism of the coin dispensing device 1n of the present invention places the dispensing coins in a container, A coin delivery device that is equipped with a coin detection unit that counts the coins listed above on the passage of coins pushed out by a rotating disk, and an actual measurement of the coin delivery pulse width obtained from the detection signal of the coin detection unit. The pulse width abnormality determination processing means compares the value with a preset standard pulse width lower limit value, and outputs an abnormal signal for IK¥ whose actual measured value is smaller than the lower limit value. It is something.

(Function) In this invention, the hopper sensor, which is a coin detection unit installed in the coin passage where the coins are pushed out by the simultaneous rotation of the disk on which the coins are placed, detects the coins that are continuously pushed out. The actual measured value of the output pulse width obtained by detection is compared with the lower limit value of the initially set standard pulse width, and when the actual value is smaller than the lower limit value, an abnormal signal is output, which prevents redundancy in coins. Disclose the effect of being able to detect disbursement accidents (overpayments) at an early stage -8-, thereby preventing them from leading to business losses.

(Example) Hereinafter, the structure of the present invention will be explained in detail based on the example shown in the drawings.

In addition, this invention determines whether the operation of the coin delivery device is normal by comparing the coin delivery pulse width detected by the hopper sensor installed in the conventional coin delivery device described above with a standard pulse width. In the lower stage of the pulse width abnormality determination process, a mechanism for preventing abnormal coin dispensing is constructed. Therefore, the money exchange machine where this coin delivery device is installed,
Or, the explanation regarding the vending machine calculation will be omitted.

This embodiment will be described with reference to a conventional coin dispensing device. Therefore, the same or corresponding parts as in FIGS. 3, 4A, 4A, and 5 are designated by the same reference numerals.

Furthermore, it is assumed that the coins used for explanation in this embodiment are 100 yen coins.

FIG. 1 is a block diagram showing an example of the function realizing means of the abnormal dispensing prevention mechanism of the present invention, and FIG. 2 shows the pulse width checking means written in the ROM in the memory 22 of FIG. This is a flowchart 1 shown in FIG. In the figure, a microcomputer 20 is mainly composed of a microprocessor 21-, a memory 22, and an interface 23. microcomputer 2
The lower limit value of the pulse width 15msec. Also, the upper limit of noise is 5 msec, and the upper limit of hopper sensor "○FF"' time is 5 msec.
．． is the setting value in the example, but the setting value may vary depending on the specifications.
It may also be sec. ” The setting values described in 2 are stored in advance as a data table, and the microcomputer 2
According to the confirmation of the hopper sensor 17 inputted to the interface 23 of the computer 20, a table lookup is performed to read out the corresponding control value, and the information-processed signal is outputted from the interface 23 of the computer 20.

The pulse width check in this embodiment is 1.024 msec.
(Hereinafter, it will be expressed as lmsec. as an approximate value.) Processed by a timer interrupt routine of 10, input from each port 1- and output to each port 1- are performed. Therefore, during the duration of the hopper sensor ``○N ++, lmsec. of the timer interrupt is added. is counted and stored in the data buffer in the memory 22, and is updated as necessary.

Next, flowchart 1 in FIG. 2 will be explained based on the above conditions. Pulse width check starts at step n101, and is the hopper sensor "○N" at step n]-02? If no coins are detected, proceed to step 1103 with N.
Hopper sensor "O F T?" 1msec.
Add step n1. Move to 05. Also, if the hopper sensor detects coins to be sent out, press [Y] to step n.
Move to l04, lm at hopper sensor "ON" time
sec., and returns to step nl02, and repeats the addition of lmsec. until the coins pass and the hopper sensor becomes "OFF ++" 1, step n
105, the hopper sensor "OFF" time is the noise upper limit [l'I is 5 msec. It is checked whether or not it is more than 5rr+sec. If less than step n1.
- Return to 02, 5msec. If it is above”
O F F ”The time is determined to be too long and step n l
Proceed to OG. In step n i O 6, the hombar sensor ``○N +1 hour lower limit of standard pulse width] -5 m
sec. I was asked whether or not this was the case]. ．． 5 m
sec. If above, step n]. ．． Returns to 0 2, lower limit of standard pulse width 1. 5 mse
c. If it is less than that, it is determined that the pulse width is abnormal and step n1
．． 07, and if the hopper sensor ``ON'' time is less than the noise upper limit value 5rr + sec., step n
1 0 2, but if it is longer than 5 msec, in conjunction with step n 1 0 6, 5rnsec.
≦110N” time< ]-5m sec.
A pulse width abnormality is determined and stored in the data buffer as an error code (step n1og).

The error code is displayed as a "pulse width abnormality" code N○ on the in-flight display, the function is discontinued, and the countermeasure is to repair the shelf cargo delivery device or replace it with a new one.

This concludes the explanation of the pulse width check, which is the procedure of the pulse width abnormality determination processing means.

In this example, a high-frequency oscillation type sensor with a fast response time and capable of detecting metal objects was used as the hopper sensor of the detection unit that detects the sending pulse width of coins, but other proximity switches using magnetic fields may also be used. Furthermore, any Op1 sensor or photo sensor may be used as long as it can accurately detect the pulse width of coins, and the purpose of the present invention is not hindered by the method or type of the coin detection sensor.

In addition, the coins in this example are 1. O O l1
1 coin was used, but the type of coins is not limited to any particular type; for example, a 500 yen coin, a coin from another country, or a medal will not impede the purpose of the present invention.

Further, the abnormal dispensing prevention mechanism of the coin dispensing device of the present invention may be used for dispensing exchanged coins in a money changer, dispensing change in a vending machine, or dispensing medals in a medal lending machine. In addition, the rotating disk of the coin dispensing device may be inclined or horizontal.Furthermore, the pulse width abnormality determination processing ITll means of the abnormal dispensing prevention mechanism of the present invention can be programmed. Although the built-in software 1 is closed, the purpose of the present invention is not hindered in any way even if the means is constructed by electrically co-circuiting or the like.

(Effects of the Invention) As is clear from the above theory 1, the abnormal dispensing prevention mechanism of the coin dispensing device of the present invention is
The pulse width abnormality determination processing means is configured to perform arithmetic processing by comparing the actual measured value of the output pulse width obtained by Shinshu with the lower limit value of the standard pulse width set in advance, and the actual measured value is the lower limit value. By providing a means to output an abnormal signal when the value is smaller, abnormal conditions such as abnormal payment (overpayment) can be detected early and countermeasures such as repair can be quickly taken, reducing business losses. It has the effect of minimizing the

[Brief explanation of drawings]

FIG. 1 shows the abnormal dispensing prevention IL of the coin dispensing device of the present invention.
FIG. 2 is a block diagram showing the functional configuration of the mechanism, FIG. 2 is a flowchart 1-, FIGS. 3 to 5 are a conventional example, FIG. Figure A is an exploded perspective view of the coin storage drawer 1l'1, Figure 413 is a back view of the coin feeding section, and Figure 5 is Kawada's theory of how the Homper sensor operates. 1 Coin sending device 8... Coin sending part Hayashi 9 ・Coin receiving hole

Claims (1)

[Claims] A coin dispensing device that places coins to be dispensed in a container and includes a coin detection section that counts the coins on a path of the coins pushed out by a rotating disk, wherein the coin detection section detects the coins. It comprises a pulse width abnormality determination processing means that performs arithmetic processing by comparing the measured value of the sending pulse width obtained from the signal and the lower limit value of the standard pulse width set in advance, and when the actual measured value is lower than the lower limit value. An abnormal dispensing prevention mechanism for a coin dispensing device, comprising means for outputting an abnormal signal when the value is small.