State determination device, method, program, storage medium

Patent metadata

Field	Value
Publication number	US-11014104-B2
Application number	US-201716313086-A
Country	US
Kind code	B2
Filing date	Jun 1, 2017
Priority date	Jun 30, 2016
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

A state determination device determines a state of a paint device including an air motor that rotates by a supply of a gas, a rotational shaft that serves as a rotational center of the air motor, and a rotary atomizer head that is connected to the rotational shaft and sprays paint. The paint device further includes a vibration detection unit that detects a vibration of the paint device, and the state determination device includes a frequency component acquisition unit and an abnormality determination unit. The frequency component acquisition unit acquires a frequency component caused by a contact between the rotational shaft and the air motor from a detection result by the vibration detection unit. The abnormality determination unit determines whether an abnormality of the air motor exists or not based on an acquisition result by the frequency component acquisition unit.

First claim

The invention claimed is:

1. A state determination device for determining a state of a paint device comprising an air motor that rotates by a supply of a gas, the air motor includes a rotational shaft that is configured as a rotational center of the air motor, and a rotary atomizer head that is connected to the rotational shaft and sprays paint, the paint device further comprising a vibration detection unit that detects a vibration of the paint device, the state determination device comprising:
a central processing unit (CPU) that
acquires a frequency component caused by a contact between the rotational shaft and another part of the air motor from a detection result by the vibration detection unit; and
determines whether an abnormality of the air motor exists or not based on an acquisition result of the acquired frequency component.

2. The state determination device according to claim 1 , wherein the vibration detection unit is any one of an acceleration sensor, a microphone, and a displacement sensor.

3. The state determination device according to claim 2 , wherein the CPU acquires the detection result from the vibration detection unit via wireless communication.

4. The state determination device according to claim 1 , wherein the vibration detection unit is arranged on a side opposite to the rotary atomizer head with respect to the air motor.

5. The state determination device according to claim 4 , wherein the CPU acquires the detection result from the vibration detection unit via wireless communication.

6. The state determination device according to claim 1 , wherein:
the paint device further comprises a gear pump that feeds the paint toward the rotary atomizer head, and a rotational unit for changing an attitude of the rotary atomizer head;
the CPU further acquires a frequency component caused by a contact during a rotation of a gear in the gear pump and/or a contact during a rotation of a rotational member in the rotational unit; and
the CPU further determines whether an abnormality of the gear pump and/or the rotational unit exists or not based on the acquisition result.

7. The state determination device according to claim 6 , wherein the CPU acquires the detection result from the vibration detection unit via wireless communication.

8. The state determination device according to claim 6 , wherein the vibration detection unit is arranged between the air motor and the rotational unit.

9. The state determination device according to claim 8 , wherein the CPU acquires the detection result from the vibration detection unit via wireless communication.

10. The state determination device according to claim 8 , wherein the rotational unit is arranged between the air motor and the gear pump.

11. The state determination device according to claim 10 , wherein the CPU acquires the detection result from the vibration detection unit via wireless communication.

12. The state determination device according to claim 1 , wherein:
the paint device further comprises an angular acceleration detection unit that detects an angular acceleration of the paint device; and
the CPU further determines whether an abnormality of the paint device exists or not based on a detection result by the angular acceleration detection unit.

13. The state determination device according to claim 12 , wherein the CPU acquires the detection result from the vibration detection unit via wireless communication.

14. The state determination device according to claim 1 , wherein the CPU acquires the detection result from the vibration detection unit via wireless communication.

15. A state determination method of determining a state of a paint device comprising
an air motor that rotates by a supply of a gas, the air motor includes a rotational shaft that is configured as a rotational center of the air motor,
a rotary atomizer head that is connected to the rotational shaft and sprays paint, and
a vibration detection unit that detects a vibration of the paint device,
the state determination method comprising:
acquiring, by a central processing unit (CPU), a frequency component caused by a contact between the rotational shaft and another part of the air motor from a detection result by the vibration detection unit; and
determining, by the CPU, whether an abnormality of the air motor exists or not based on an acquisition result by the acquiring of the frequency component.

16. A method comprising:
rotating an air motor included in a paint device by a supply of gas, wherein the air motor includes a rotational shaft that is configured as a rotational center of the air motor, and the paint device further includes a rotary atomizer head that is connected to the rotational shaft and sprays paint,
detecting, by a vibration detection unit, a vibration of the paint device:
acquiring, by a central processing unit (CPU), a frequency component caused by a contact between the rotational shaft and another part of the air motor from a detection result by the vibration detection unit; and
determining, by the CPU, whether an abnormality of the air motor exists or not based on an acquisition result by the acquiring of the frequency component.

17. A non-transitory computer-readable medium having a program of instructions for execution by a computer to perform a state determination process of determining a state of a paint device comprising
an air motor that rotates by a supply of a gas, the air motor includes a rotational shaft that is configured as a rotational center of the air motor,
a rotary atomizer head that is connected to the rotational shaft and sprays paint, and
a vibration detection unit that detects a vibration of the paint device,
the state determination process comprising:
acquiring, by a central processing unit (CPU), a frequency component caused by a contact between the rotational shaft and another part of the air motor from a detection result by the vibration detection unit; and
determining, by the CPU, whether an abnormality of the air motor exists or not based on an acquisition result by the acquiring of the frequency component.

Assignees

• Abb Schweiz Ag

Inventors

• Terada Masaru
• Riveland Steinar

Classifications

• G01M13/028

  Acoustic or vibration analysis · CPC title

• G01M1/22

  and converting vibrations due to imbalance into electric variables · CPC title

• B05B12/004

  comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm (B05B12/08 takes precedence; registering or indicating the condition or the working of machines or other apparatus in general G07C3/00) · CPC title

• B05B5/0415 Primary

  Driving means; Parts thereof, e.g. turbine, shaft, bearings · CPC title

• B05B5/043

  using induction-charging · CPC title