JPH0550789B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a number counting device for counting the number of printed matter such as securities.

[Prior art]

In the past, count management for checking the number of printed materials has been associated with a large workload on manufacturing sites. In particular, with the development of the distribution economy, the demand for printed materials such as securities has increased, and with this, the number management required for printed materials such as securities has become the most important control in securities printing factories. .

Usually, securities include banknotes, stock certificates, beneficiary certificates, checks, bills, various receipts, etc.
In addition, items that require strict quantity control, such as labels, are manufactured as securities.

Under these circumstances, conventional sheet counting devices do not have the ability to mechanically count stacked printed matter one sheet at a time.
There is a method in which the sheets are counted while turning them, and a method in which light is emitted onto the object to be measured using a light-emitting diode or the like, and the reflected light is used to read the shadows between the sheets and the number is counted optically.

[Problem that the invention seeks to solve]

However, the method of counting sheets while mechanically turning them over one by one has problems such as curling of the edges of the sheets and impossibility of measuring thick or stiff sheets.

In addition, with the optical counting method, it is possible to measure paper with a thickness of about 1 mm or more because shadows tend to appear on the edges, but with thin paper that is less than 0.5 mm, shadows do not easily appear on the edges and measurement is difficult. However, there are problems such as frequent counting errors.

[Means to solve problems]

In order to solve this problem, the present invention provides an input means for optically scanning the edge of stacked printed matter and inputting the image, and an input means for inputting the image signal corresponding to one printed matter stored in advance. A device for counting the number of sheets of laminated printed matter is provided, which includes a processing means for performing pattern matching processing using a reference waveform of an image and adding up the number of cutouts, and a display means for displaying the calculation result.

[Action of the invention]

Therefore, according to the present invention, there is provided a sheet counting device which is capable of measuring the number of even extremely thin objects without being limited by the material or shape of the object to be measured, and which does not cause deformation or staining of the object to be measured. It became possible to do so.

[Embodiment] Hereinafter, an embodiment of a stacked printed matter counting device according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the inside of the sheet counting device according to the present invention exposed through a cutout. Reference numeral 1 denotes a main body of a device for counting the number of stacked printed matter, in which stacked printed matter 4 is placed on a counting stand 22 and fixed by a clamp device 5. Although not shown, the clamping device 5 functions to press down the upper ends of the stacked printed matter using a pressure method such as an air cylinder.

2 is a line sensor camera, and a support plate 10
The reflected light from the side surface of the laminated printed matter 4, which is illuminated by a light source (not shown), is received through a lens device 3 which is supported above and has a built-in magnifying lens 9, and is photoelectrically converted. An opening 23 is provided on the counting table 22 side so that the measured surface of the laminated printed matter 4 can be illuminated.

Here, the line sensor camera 2 can use a CCD type or MOS type line sensor.
Further, the support plate 10 is locked to a screw 8, moves up and down by rotation of the screw 8, and is kept parallel by three guide rails (not shown).

Reference numeral 17 denotes a pulse motor for rotating the screw, and the drive is transmitted to the screw 8 via the box 7.

A count control section 6 is placed on the top of the main body 1 of the sheet counting device, and is connected to the line sensor camera 2 and the pulse motor 17, and is further provided with a display section 15 for displaying calculation results.

FIG. 2 is a block diagram of the count control section 6.

The image signal from the line sensor camera 2 is filtered to remove high frequency components by a low-pass filter 11.
The differential circuit 12 performs differentiation processing, the A/D converter 13 digitizes the signal, and the image is stored in the image memory 14 . The image signal stored in the image memory 14 is once sent to the RAM 20, and in the CPU 21, it is subjected to pattern matching processing with a reference waveform corresponding to one printed material previously stored in the RAM 20, and the number of cutouts is accumulated. and displayed on the display device 15.

Here, the reference waveform to be stored in the RAM 20 is obtained by scanning the laminated printed matter 4 placed on it in advance, determining similar signal patterns that repeatedly appear, and storing data for one waveform. The starting point of the line camera 2 is the bottom edge of the laminated printed matter, and when the light intensity changes at the top edge, the scan is completed as an end mark. The pulse motor 17, driver 18, and controller 19 constitute a drive circuit that drives the line sensor camera 2 up and down.

In FIG. 3, a part of the image for one field of view captured by the line sensor camera 2 is shown, and in FIG. The waveform corresponds to one printed sheet of one field of view in FIG.

FIG. 4B shows a state in which the image signal after high frequency components have been removed is subjected to differential processing and converted into a differentially processed signal.

Next, the counting process in the CPU 21 will be explained based on FIG.

First, in step S1, image signals for the field of view of the line sensor camera stored in the image memory 14 are taken into the CPU 21. The image signal taken into the CPU 21 is subjected to pattern matching processing using a reference waveform for one printed sheet stored in advance in the RAM 20.
2.

Next, it is determined whether the image signal matches the reference waveform or not in step S3, and the number of matched waveforms is counted in step S4. For waveforms that do not match, the number of pixels is accumulated, and this is divided by the number of pixels of the reference waveform in S5, and this value is included in the result of S4 to accumulate the number of waveforms in one field of view. S6 to calculate the number of printed matter in the.

In the next step, the pulse motor is driven to move the line camera by one field of view (S7).

In this way, the edges of the printed matter stacked one after another are scanned, the number of waveforms of the image signal is calculated, and when the image signal of the end mark is captured, step S8 assumes that all scanning of the printed matter 4 has been completed and the entire field of view is scanned. S9 to integrate the number of waveforms.

Finally, the number of printed matter is displayed on the count display section, and the process ends at S10.

As another embodiment, it is also possible to fix the laminated print horizontally and scan the line sensor camera horizontally.

〔Effect of the invention〕

According to the present invention, it is possible to provide a number counting device that can calculate the number of objects without being limited by the material or shape of the object to be measured, and does not cause deformation or staining of the object.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the counting device according to the present invention, FIG. 2 is a block diagram of the count control section 6, FIG. 3 is an image of a part of one field of view captured by the line sensor camera 2, and FIG. 4 is an illustration. is an image signal photoelectrically converted by the line sensor camera 2, and Figure 4 (b) is a differentially processed signal obtained by differentially processing the image signal.
FIG. 5 is a flowchart for calculating the number of members. DESCRIPTION OF SYMBOLS 1... Laminated printed matter number counting device, 2... Line sensor camera, 4... Laminated printed matter, 6... Count control section, 15... Count display section, 17...
...Pulse motor.

Claims (1)

[Claims] 1 In a sheet counting device that optically counts the number of stacked printed materials, an input means for scanning the edges of the printed materials and inputting the image, and an input image signal corresponding to one printed material are provided. 1. An apparatus for counting the number of sheets of laminated printed matter, comprising processing means for performing pattern matching processing using a reference waveform and accumulating the number of cutouts, and display means for displaying the calculation result.