JPS588390A - Identification system for sheet paper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a paper sheet sorting device that automatically sorts paper sheets, such as paper sheets, stock certificates, checks, and securities, into valid sheets and invalid sheets. The present invention relates to a paper leaf identification method that automatically sets a reference value for paper leaf identification.

Conventional standard values for identifying paper sheets For example, ``The method for determining the standard value for distinguishing between genuine, fake, good, and unfit is to transport a counterfeit note or an unfit note, measure the value at that time, and identify it. It was used as a standard value. According to this method, it is necessary for a human being to first identify the notes that appear to be counterfeit or damaged notes, and this judgment standard is subject to subjectivity.In addition, since each identification item is focused on, each item must be conveyed separately. need to,
If there are several items for the same factor, the data distribution for each item will be different, so it is difficult to make a decision based on the balance between items.Is it okay to use them as they are, even if they are measured values at the time of transport? , it required a high level of decision-making skills because it led to confusion in judgment, and it took a considerable amount of time to arrive at a conclusion due to a lot of trial and error.

The present invention has been made based on the above circumstances, and its purpose is to focus on the rate of counterfeit notes and damaged notes, and to
In order to keep these constant, a target value is specified in the setting switch, the circulating note is transported, the characteristic data distribution is obtained, and the number of counterfeit or undamaged notes is corrected using the interval estimation method for the value of the setting switch. By using the characteristic values to be used as identification reference values, it is possible to easily and reliably obtain values without the need for sophisticated judgment techniques. The purpose of the present invention is to provide a method for identifying paper sheets that increases the accuracy of data by excluding paper sheets that are detected to be clearly out of the standard due to inclination, etc., from being sampled.

Hereinafter, the present invention will be explained with reference to an illustrated embodiment.

FIG. 1 shows a schematic example of a sheet sorting device necessary for setting sheet identification values, and numeral 1 is designed such that sheets JP to be sorted can be loaded in a sheet supply section. Paper sheet supply section 1
The inner paper JiP is sequentially picked up by the take-out rotor 2 starting from the frontmost sheet.
0 conveyance path 3 where sheets are taken out one by one and conveyed by conveyance path 3
A detection unit 4 is provided in the middle of the paper sheet P.
Detect. At this time, the result of determining whether the bill is a counterfeit bill or a genuine bill φ by hardware is also input.

Furthermore, the paper sheet that has passed through the detection section 41 is further conveyed through the conveyance path 3. On the other hand, the sorting control section 5 is operated in order to identify the paper sheets whose characteristic data has been obtained from the detection section 4 and to accumulate them in the designated accumulation section 6. In this way, the characteristic data t1 of paper sheets is detected for each sheet, and is then accumulated in the accumulation section 6.

In FIG. 2, the paper industry characteristic data for each II obtained by the detection section 4 is calculated by the calculation control section 7 and stored as a frequency distribution value in the detected data distribution value storage section 8. Furthermore, a sorting command is issued to the sorting control section 5 based on the characteristic data of the paper sheets.

In this case, when calculating the identification value, the detection unit O hardware separates the notes into those determined to be counterfeit and those that are not, but during the original identification classification, the characteristic data of the paper and the set identification value memory are used. The values in the section 9 are compared and a sorting command based on the identification result is output to the sorting control section 5. After all the sheets P have been conveyed, the arithmetic control unit 7 performs the process 7 in FIG. 3 according to the value set in the setting switch unit 10.
The characteristic data value for the number of counterfeit bills corrected by the section designation method shown in 0- and the designated number is obtained from the detected data distribution value storage section 8 and stored in the set identification value storage section 9.

In such a configuration, the method for setting the reference identification value will be explained in detail using FIGS. If the characteristic data has different characteristics depending on the front and back sides and the top and bottom sides, align the directions and collect the data separately.

The paper sheets P are taken out one by one by the take-out rotor 2 from the paper sheet supply section 1, pass through the conveyance path 3, and pass through the detection section 4t. Next, in FIG. 2, the calculation control unit 7 detects 1'JR from the detection s4.
After reading the feature data for each and performing a predetermined calculation, it is stored in the detected data distribution value storage section 8 in accordance with the level.

This calculated value is calculated by dividing the data value into several classes and counting the frequency included in each class in order to reduce the amount of storage required. At this time, the detection unit 71-Dokuair determines that the note is a counterfeit note, i.e., one whose thickness and length are outside the standard.
Items that are torn or transported in a skewed manner are not treated as data and are read and discarded.

On the other hand, a sorting instruction is issued to the sorting control section 5 to separate the bills determined by the node ware of the detecting section 4 to be counterfeit and those that are not. The paper sheets that have passed through the detection section 4 are stacked in a stacking section 6 controlled by a sorting control section 5. After collecting the above-mentioned data for all the sample paper sheets, the arithmetic control section 7 calculates the value of the counterfeit note rate or the value of the damaged note rate set in advance by the setting switch section 10 and the frequency distribution of the detected data distribution value storage s8. From the value, the process according to the flowchart shown in FIG. 3 is performed to obtain the reference value for identification, and it is stored in the set identification value storage section 9. calculate.

sp=〃107〒shoulder 7n; Number of sample sheets P; Ratio of unfit note rate set by the setting switch section 10 (When determining 1 in both upper and lower limit ranges, set P in the above formula. In step 32, using the standard error Sp obtained in this way, the proportion p of the unfit note rate is set (using a sword, the lower confidence interval for that proportion and the upper @4III Calculate the interval mouth using the following formula: 0 L=P-(RXSP) LI=P+ (RX 5P) R: 1.96 for a confidence interval with a coefficient of 95ch (1.96 for a confidence interval with a coefficient of 95ch (1 for the lower limit or only 1 limit) , 645) In step 33, calculate the number of papers CL1Cu at the lower limit and upper limit corresponding to the ratio of the unfit note rate set by the confidence interval L10 of the upper limit and the confidence interval L10 of the lower limit obtained in this way. It is calculated using the following formula.

CL= n The detected data distribution value storage unit 8 reads out the lower limit,
- This is stored in the set identification value storage unit 9 as the upper limit reference identification value. After that, the paper sheet sorting device shown in FIG. It is possible to identify and classify whether it is good or bad.

Note that the setting switch section may use a common keyboard or the like, and may be keyed in when setting the identification value. It goes without saying that the paper industry characteristic data inputted from the detection section may be optically read data or magnetically read data.

As explained above, according to the present invention, by specifying the values of the counterfeit note rate and the undamaged note rate on the setting switch, the paper industry can be determined, the frequency distribution of the characteristic data values can be calculated, and the setting switch By using the feature data values corresponding to the discrimination reference values, human subjective judgment and trial-and-error operations can be eliminated, and the discrimination reference values can be easily determined without the need for advanced judgment techniques0. By excluding counterfeit bills detected by the detection unit hardware from the feature data values, the precision of the data is increased, and the standard value for the number of counterfeit or damaged bills corrected by the interval estimation method is calculated. By calculating this, it is possible to provide a reliable paper sheet identification method.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show one embodiment of the present invention, and FIG. 1 is a diagram schematically showing the configuration of a paper sheet sorting device, and FIG. 2 is a block diagram of the paper sheet sorting device. FIG. 3 is a diagram showing a process flow for determining the discrimination reference value by the interval estimation method. P... Paper leaf 1... Paper industry supply department 4...
...Detection section 7...Calculation control section 8...
Detection data distribution value storage section 9...Setting identification value storage section 10
・・・・・・Representative of Setting Switch Department Patent Attorney Nori Chika San Yu (and 1 other person) Figure 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) A detection unit that detects conveyed paper sheets and reads % minute data, a distribution value storage unit that stores distribution values of the data based on characteristic data from this detection unit, and a paper industry to be identified. The level of the corresponding feature data is calculated from the feature data stored in the distribution value storage section according to the classification ratio set by the setting switch section for setting the classification rate of the type. and a setting identification value storage unit,
A method for identifying paper products, characterized in that paper sheets are identified based on the identification Ml value stored in the setting storage section. (2) The distribution value storage unit is configured to store characteristic data from the detection unit excluding non-standard data.Claim 1(i) Identification of self-contained paper sheets method.