Closed space monitoring system
AssigneeAgat Co., Ltd.
InventorTOSHIYUKI TAGA
Life of this patent
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Abstract
An observation unit includes: an imaging unit an inner wall of a cylindrical wall of a duct; and a light emitting unit for emitting laser light. In a second state in which the observation unit has stopped at a predetermined position of a drive portion of a control unit, the laser light is emitted by the light emitting unit, passes through a connecting portion, is reflected by a mirror portion, and illuminates the inner wall. A processing circuit portion of the control unit transmits a captured image the imaging unit to an external device, and the external device measures the coordinates of a center of gravity. If the amount of movement exceeds a threshold, it is determined that there is a risk of fire within the duct, and a notification is sent to an operator.
Claims10
A closed space monitoring system comprising a closed space monitoring apparatus including a holding portion that is to be fixed to an outer surface of a tube wall forming a closed space and has a through-hole that is to communicate with an insertion hole provided in the tube wall, a main body portion fixed to the holding portion, a control portion coupled to a rear end of the main body portion, a light emitting portion that applies a light beam, and an imaging portion that captures an image of an inner wall of the tube wall to which the light beam is applied, and an external apparatus that communicates with the closed space monitoring apparatus, wherein
- the main body portion includes a guide tube that is to communicate with the insertion hole and is fixed in close contact with the through-hole, an observation portion that is slidable within the guide tube along a longitudinal direction of the guide tube, and a distal end portion that is connected to a front side of the observation portion and slides within the guide tube together with the observation portion,
- the distal end portion includes a plate-shaped sealing portion that is placed on a distal end side and seals a distal end of the guide tube, and a coupling portion that couples the sealing portion and the observation portion,
- the light emitting portion is placed in the observation portion on a front side of the imaging portion, and emits the light beam frontward of the guide tube,
- an angle between a direction of orientation of a lens of the imaging portion and a direction in which the light emitting portion emits the light beam is approximately 90 degrees,
- an inclined mirror surface portion is placed on an inner side of the sealing portion,
- the light beam emitted from the light emitting portion and reflected on the mirror surface portion is applied to the inner wall,
- a reflection angle of the applied light beam at the inner wall in an imaging direction of the imaging portion is 40 degrees or more,
- the control portion includes a drive portion that moves the observation portion, and a processing circuit portion that controls the drive portion and the observation portion and transmits a captured image captured by the imaging portion to the external apparatus, and
- the external apparatus measures a thickness of deposit adhering to the inner wall based on an amount of movement on a screen of a center portion of a surface region of the light beam of the received captured image.
A closed space monitoring system comprising a closed space monitoring apparatus including a holding portion that is to be fixed to an outer surface of a tube wall forming a closed space and has a through-hole that is to communicate with an insertion hole provided in the tube wall, a main body portion fixed to the holding portion, a control portion coupled to a rear end of the main body portion, a light emitting portion that applies a light beam, and an imaging portion that captures an image of an inner wall of the tube wall to which the light beam is applied, and an external apparatus that communicates with the closed space monitoring apparatus, wherein
- the main body portion includes a guide tube that is to communicate with the insertion hole and is fixed in close contact with the through-hole, an observation portion that is slidable within the guide tube along a longitudinal direction of the guide tube, and a distal end portion that is connected to a front side of the observation portion and slides within the guide tube together with the observation portion,
- the control portion includes a drive portion that moves the observation portion, and a processing circuit portion that controls the drive portion and the observation portion and transmits a captured image captured by the imaging portion to the external apparatus,
- the external apparatus measures a thickness of deposit adhering to the inner wall based on an amount of movement on a screen of a center portion of a surface region of the light beam of the received captured image,
- a light-emitting-portion holding portion that is to be fixed to the outer surface of the tube wall, has a light-emitting-portion through-hole that is to communicate with a light-emitting-portion insertion hole provided in the tube wall, and differs from the holding portion, a light-emitting-portion main body portion that is fixed to the light-emitting-portion holding portion, and a light-emitting-portion control portion coupled to a rear end of the light-emitting-portion main body portion are provided,
- the light-emitting-portion main body portion includes a light-emitting-portion guide tube that is to communicate with the light-emitting-portion insertion hole and is fixed in close contact with the light-emitting-portion through-hole, the light emitting portion that is slidable within the light-emitting-portion guide tube along a longitudinal direction of the light-emitting-portion guide tube, a light-emitting-portion distal end portion that is connected to a front side of the light emitting portion and slides within the guide tube together with the light emitting portion, and
- the light-emitting-portion control portion includes a light-emitting-portion drive portion that moves the light emitting portion, and a light-emitting-portion processing circuit portion that controls the light-emitting-portion drive portion and the light emitting portion.
Dependencies are inferred from the claim text.