JPH0650061Y2 - Paper sheet identification device with maintenance warning function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sheet identifying apparatus having a maintenance warning function.

[Prior Art] In a paper sheet discriminating device such as a bill discriminating device, a cash bill discriminating device, a card reading device, etc., the failure detection of various characteristic detection sensors has a warning lamp or a failure code as failure warning means. Easy and reliable. On the other hand, on the other hand, no conventional means for detecting the performance deterioration of such a feature detection sensor has been provided.

Since a vending machine or the like provided with such an identification device is often installed outdoors, it is difficult to prevent performance deterioration due to dirt, abrasion, etc. of the feature detection sensor originating from the surrounding environment such as dust. Further, since the identification object is a paper sheet, a card, a coin, or the like owned by a general user, performance deterioration due to dirt, abrasion, etc. of the feature detection sensor due to the identification object cannot be ignored. Under such operating conditions, it is impossible to visually check whether the performance has deteriorated, and it is necessary to actually insert a sheet or the like for the inspection.

[Problems to be solved by the invention] However, the inspection manually performed by the administrator at the site, such as actually inserting the paper sheet, is complicated and low in reliability, and further leads to a decrease in the operation rate of the device. .

This invention solves the above problems and has a maintenance warning function that can automatically warn of performance deterioration due to dirt, wear, etc. of various feature detection sensors without requiring manual inspection by an administrator. An object of the present invention is to provide a paper sheet identification device.

[Means for Solving the Problem] As shown in FIG. 1, the paper sheet identifying apparatus according to the present invention determines that the inserted paper sheet is an authenticity determination means for determining authenticity. The counterfeit bill judgment count accumulating means for accumulating the number of judgments is compared with the counterfeit bill judgment count accumulative value obtained by the counterfeit note judgment count accumulating means and the warning reference value and the abnormal reference value having a larger value. , A predetermined first warning instruction is given when the cumulative value of the number of times of counterfeit bill determination is between the warning reference value and the abnormality reference value, and a predetermined value is given when the cumulative value of number of counterfeit bill determination times is larger than the abnormality reference value. Issue the second warning instruction, 2
Warning means for issuing a warning to instruct that the genuineness / counterfeit judging means should be maintained according to a step-wise warning instruction.

[Operation] When the characteristic detection sensor and the circuit of the paper sheet in the authenticity determination means deteriorates due to long-term use, even if the inserted paper sheet is a genuine paper sheet, it is erroneously determined to be a false paper sheet. Will often be returned. Therefore, in this invention, a counterfeit note determination count accumulating unit is provided, and the number of counterfeit bills determined by the authenticity determining unit is accumulated. Then, warning means is provided, and a warning is issued to instruct that maintenance of the genuine / counterfeit determination means should be performed based on the total number of counterfeit bill determination times obtained by the total number of counterfeit bill determination times. That is, the cumulative value of the number of times of fake bill determination, the warning reference value, and the abnormal reference value having a larger value are compared with each other, and a two-step warning instruction is issued according to the comparison result. As a result, the excellent effect that it becomes possible to perform extremely fine maintenance is achieved.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 2, the optical characteristics of the inserted sheet or the like are read by the photo sensor 1 which is a characteristic detection sensor. The read characteristics are sent to the amplifier circuit 3 as a detection data signal, and after amplification, the central processing unit (CPU) 7
Entered in. The magnetic head 2 also functions as a feature detection sensor to detect the magnetic feature of the inserted sheet, and the detection data signal is waveform-shaped by the waveform shaping circuit 5 and then input to the CPU 7 via the amplifier circuit 4. A program ROM 8 and data and a working RAM 9 are provided in association with the CPU 7, a process of determining the authenticity of the inserted sheet based on the output of each of the feature detection sensors, and an insertion based on the authenticity determination result. Various processes such as taking in and returning of paper sheets, and a fake bill determination count cumulative process of accumulating the number of times of determination as a fake bill based on the authenticity determination result, and the above based on this fake bill determination count cumulative value Various processes are executed according to a software program, such as a warning determination process as to whether or not to issue a warning instructing maintenance of each feature detection sensor. The maintenance / inspection warning lamp 6 is for displaying a predetermined warning according to the result of the above-mentioned warning judgment processing. Moreover, you may make it output the said counterfeit bill determination frequency cumulative value as data.

Next, with reference to the flow chart of FIG. 3, a processing procedure of an example of the counterfeit bill determination count cumulative processing and warning determination processing executed by the CPU 7 will be described.

When the paper sheet is inserted into the identification device and the result of the authenticity determination processing (not shown) determines that it is a genuine note, the process proceeds to step 10 and the RAM 9
“0” is written in a predetermined address of the true / false determination result storage area in, and the process proceeds to step 12. On the other hand, if it is determined that the bill is a counterfeit note, the procedure proceeds to step 11, where "1" is written in a predetermined address of the genuine / counterfeit determination result storage area in the RAM 9, and the procedure similarly proceeds to step 12.

The true / false determination result storage area in the RAM 9 has N addresses and functions as, for example, an N stage ring counter, and in step 10 or 11 above, a certain address (stage) is set to "0" or " When "1" is written, the addresses (stages) are sequentially switched so that "0" or "1" is written to the next address (stage) in the next cycle. When the final address (stage) is reached, the storage address returns to the initial address (stage).
Therefore, the true / false determination results from the latest true / false determination result to N times before are always stored in the true / false determination result storage area in the RAM 9.

In step 12, all the data stored in the genuine / counterfeit determination result storage area of the RAM 9 is searched, and the number of “1”, that is, the number of times of determination as a counterfeit note is accumulated and temporarily stored in the RAM 9.

In the next step 13, it is checked whether or not the cumulative value of the above-mentioned counterfeit bill determination times is less than or equal to a preset warning reference value. The data of the warning reference value may be set by a switch or the like, or may be stored in advance in a non-volatile memory or the like. If YES, the process proceeds to step 14 to turn off the maintenance / inspection warning lamp 6 to indicate that the feature detection sensors 1 and 2 are normal. If no, go to step 15.

In step 15, it is checked whether or not the above-mentioned cumulative value of the number of counterfeit bill determinations is less than or equal to a preset abnormal reference value. Of course, this abnormal reference value is set to a value equal to or higher than the above warning reference value. YE
In the case of S, that is, when the warning reference value is exceeded but the abnormal reference value has not been reached, go to step 16 to blink the maintenance / inspection warning lamp 6 and perform maintenance / inspection of the feature detection sensors 1 and 2. Warn that. If NO, go to step 17.

In step 17, the maintenance / inspection warning lamp 6 is continuously turned on to warn that the cumulative value of the number of times of fake bill determination exceeds the abnormal reference value. For example, in that case, the feature detection sensor 1,
Indicates that item 2 is not functioning normally and prompts further maintenance and inspection.

In addition, in the above-mentioned embodiment, the forgery bill determination count cumulative processing and the warning determination processing are performed by software processing, but it is needless to say that they can be implemented by hardware logic.

Further, in the embodiment, an example in which a two-step maintenance warning is given by turning off, blinking, and turning on the maintenance / inspection warning lamp has been shown, but this may be a one-step maintenance warning. Further, the warning is not limited to the warning by turning off, blinking, and lighting the maintenance / inspection warning lamp, and may be a warning by sound or other means. Alternatively, the administrator may be warned, or the data of the cumulative number of counterfeit bill determinations may be output as information to another control device or the like.

Further, the method of accumulative processing of the number of times of determination of forged bills is not limited to the ring counter method as in the above-mentioned embodiment, but may be any other method such as a method of accumulating every cycle.

[Effect of the Invention] As described above, according to the present invention, the number of counterfeit bill determinations is accumulated based on the result of genuine / counterfeit determination of paper sheets, and the maintenance inspection warning is automatically issued based on the total number of counterfeit bill determinations. Since it is performed in a simple manner, it is not as complicated as a manual inspection, and the characteristic detection sensors are not contaminated without reducing the operation rate of the device.
This has an excellent effect of being able to appropriately warn the necessity of maintenance inspection such as the presence or absence of performance deterioration such as wear. In particular,
According to the present invention, the cumulative value of the number of times of fake bill determination, the warning reference value, and the abnormal reference value having a larger value are compared with each other, and a two-stage warning instruction is issued according to the comparison result. , It has an excellent effect that it becomes possible to perform extremely fine maintenance.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing a basic configuration of a paper sheet identifying apparatus according to the present invention, and FIG. 2 is a block diagram showing a hardware configuration of an embodiment of a paper sheet identifying apparatus according to the present invention.
The figure is a flow chart showing an example of a maintenance warning processing procedure in the embodiment. 1 ... Photo sensors for feature detection, 2 ... Magnetic head for feature detection, 3, 4 ... Amplification circuit, 5 ... Waveform shaping circuit, 6 ... Maintenance / inspection warning lamp, 7 ... Central processing unit ( CPU), 8 ... Program ROM, 9 ... Data and working RAM.

Claims (1)

[Scope of utility model registration request] 1. A paper sheet identification apparatus comprising a genuine / counterfeit judging means for judging the authenticity of an inserted paper sheet, wherein a counterfeit note judgment is made by accumulating the number of times the genuine / counterfeit judgment means judges a counterfeit note. The count accumulation means is compared with the counterfeit bill determination count cumulative value obtained by the counterfeit bill determination count accumulation means and the warning reference value and the abnormal reference value having a larger value, respectively. Between the value and the abnormality reference value, a predetermined first warning instruction is given, and when the counterfeit note count cumulative value is larger than the abnormality reference value, a predetermined second warning instruction is given and two steps are given. And a warning means for giving a warning for instructing that the authenticity determination means should be maintained by the warning instruction.