# US 12,006,632 B2 · Monitoring system

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- Number: US 12,006,632 B2
- Document ID: US12006632B2
- Status: Granted
- Kind: B2
- Application number: 17/277,836
- Filed: 2019-10-01
- Published: 2021-11-11
- Granted: 2024-06-11
- Earliest claimed: 2018-10-01
- Assignees: Maintech Co., Ltd.
- Applicants: Maintech Co., Ltd.
- Inventors: Hiroshi Sekiya; Hitomaru Sakata; Daisuke Kobayashi; Ayano Suga
- Web page: https://patentgrep.com/patent/US12006632B2

## CPC

- D21G 9/0009: {Paper-making control systems}
- D21G 9/0054: {details of algorithms or programs}
- D21G 9/0027: {controlling the forming section}
- G01N 21/84: Systems specially adapted for particular applications
- G01N 21/892: characterised by the flaw, defect or object feature examined
- G05B 15/02: electric
- H04N 7/18: Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- G01N 2021/8411: {Application to online plant, process monitoring}
- G01N 2021/8917: {Paper, also ondulated}
- D21G: CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES (winders or rewinders for finished products, means for adjustment of wrinkles or lateral extensions B65H)
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

An object is to provide a monitoring system capable of preventing the occurrence of a defect in paper by monitoring the device. The present invention is directed to a monitoring system A having a papermaking machine 1 for manufacturing paper X, an applying device 2 for applying a chemical solution to a site of the papermaking machine directly or indirectly in contact with the paper while the papermaking machine 1 is operated, a control panel 3 for setting an application condition of the applying device 2, a monitoring camera 4 for monitoring a monitoring target site, and a control device 5 connected to the monitoring camera 4 via a network. The monitoring target site is the site of the papermaking machine 1 directly or indirectly in contact with the paper X and/or the applying device 2, and the control device 5 has a computing unit S1 which converts a state of the monitoring target site into a numerical form by using video taken by the monitoring camera 4, a display unit S2 which displays detection data obtained by conversion into the numerical form at the computing unit S1, and a storage unit S3 which stores the detection data.

## Claims

### Claim 1

A monitoring system having a papermaking machine for manufacturing paper, an applying device for applying a chemical solution to a site of the papermaking machine directly or indirectly in contact with the paper while the papermaking machine is operated, a control panel for setting an application condition of the applying device, a monitoring camera for monitoring a monitoring target site, and a control device connected to the monitoring camera via a network, wherein
the monitoring target site is dryer rolls, canvas, or canvas rolls of the papermaking machine directly or indirectly in contact with the paper and/or the applying device, and
the control device has a computing unit which converts a state of the monitoring target site into a numerical form with binarizing by using video taken by the monitoring camera, a display unit which displays detection data obtained by conversion of a change amount of a binarized value during operation with respect to a value obtained by binarizing a stationary state into the numerical form at the computing unit, and a storage unit which stores the detection data.

### Claim 2 (depends on 1)

The monitoring system according to claim 1, wherein
the storage unit further stores occurrence information when a non-stationary state occurs and a corrected application condition,
from the detection data and the occurrence information, and the corrected application condition accumulated in the storage unit, the computing unit sets a threshold of the presence or absence of occurrence of the non-stationary state and the corrected application condition in excess of the threshold, and
in excess of the threshold, an alert is displayed on the display unit and the application condition in the control panel is changed to the corrected application condition.

### Claim 3 (depends on 2)

The monitoring system according to claim 2, wherein
the system further has a flaw detection camera which detects a flaw in the paper,
the control device is connected to the flaw detection camera via a network, and
flaw information of the paper by video taken by the flaw detection camera is displayed on the display unit.

### Claim 4 (depends on 1)

The monitoring system according to claim 1, wherein
the system further has a flaw detection camera which detects a flaw in the paper,
the control device is connected to the flaw detection camera via a network, and
flaw information of the paper by video taken by the flaw detection camera is displayed on the display unit.