Gas detection device

Patent metadata

Field	Value
Publication number	US-10748401-B2
Application number	US-201816207734-A
Country	US
Kind code	B2
Filing date	Dec 3, 2018
Priority date	Feb 8, 2014
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A gas detection device has at least one functional device ( 1, 13 ), which is configured to receive radiation ( 10 ) passing through a defined monitoring area ( 4 ). At least one analysis unit ( 9, 19 ) is configured to detect and analyze a change in the received radiation ( 10 ). The received radiation ( 10 ) is based on the interaction of the radiation ( 10 ) with a gas present within the monitoring area ( 4 ). At least one camera ( 8 ) has a field of view ( 11 ) that at least partially detects the monitoring area ( 4 ).

First claim

What is claimed is:

1. A gas detection device comprising:
at least one functional device configured to receive radiation having passed through a defined monitoring area, the functional device including a light emitter and a light detector arranged on different sides of the monitoring area;
at least one analysis unit configured to detect and analyze a change in the received radiation, which is based on a gas present within the monitoring area;
at least one thermal imaging camera with a camera field of view that at least partially detects images of the monitoring area;
a data transmission device connecting the functional device to a reception site;
the analysis unit being configured such that based on an automatic analysis of a received radiation or based on an analysis of an image recorded by the camera or based on an analysis of an image recorded by the thermal imaging camera, or based on any combination of an automatic analysis of a received radiation, an analysis of an image recorded by the camera and an analysis of an image recorded by the thermal imaging camera, the analysis unit transmits data to the reception site by means of the data transmission device;
the data comprise image data of an image recorded by the camera or recorded by the thermal imaging camera or a fault indication or any combination of image data of an image recorded by the camera, recorded by the thermal imaging camera and a fault indication.

2. The gas detection device in accordance with claim 1 , further comprising a reflector positioned at a spaced location from the functional device.

3. The gas detection device in accordance with claim 1 , wherein the camera is sensitive in both a visible range of the light spectrum and in an infrared range of the light spectrum.

4. The gas detection device in accordance with claim 1 , wherein the camera is arranged at or in a housing of the functional device or is fastened to a platform pivotably connected to the functional device.

5. The gas detection device in accordance with claim 1 , wherein the camera is arranged within a housing of the functional device, which housing is encapsulated to be pressure-tight.

6. The gas detection device in accordance with claim 5 , wherein the housing has a passage window on a side facing the monitoring area, wherein the passage window is configured as a lens in a first area, which is provided for passage of the radiation and is configured as a plane-parallel window in a second area located in the field of view of the camera.

7. The gas detection device in accordance with claim 1 , wherein the analysis unit is configured to compare an image recorded by the camera with a reference image in order to determine a maladjustment of the functional device.

8. A method of gas detection, the method comprising the steps of:
providing a gas detection device comprising: at least one functional device configured to receive radiation having passed through a defined monitoring area, the functional device including a light emitter and a light detector arranged on different sides of the monitoring area; at least one analysis unit configured to detect and analyze a change in the received radiation, which is based on a gas present within the monitoring area; and at least one thermal imaging camera with a camera field of view that at least partially detects the monitoring area, wherein a fault indication based on the analyzed change in the received radiation is linked with the image data of an image recorded by the camera, and wherein
a decision is made on shutting off an industrial plant;
a source of a detected gas is determined;
a decision is made on whether an interruption of the reception of the radiation is temporary;
a potential ignition source for a gas to be detected is determined as a follow-up measure on the basis of this linking; or
any combination of a decision is made on shutting off an industrial plant; a source of a detected gas is determined; a decision is made on whether an interruption of the reception of the radiation is temporary; and a potential ignition source for a gas to be detected is determined as a follow-up measure on the basis of this linking.

9. The method in accordance with claim 8 , wherein the follow-up measure or the plurality of follow-up measures is/are initiated automatically.

10. The gas detection device in accordance with claim 1 , wherein:
the camera detects images of objects in the monitoring area.

11. The gas detection device in accordance with claim 1 , wherein:
the camera is configured to record the images of the monitoring area as a function of the gas concentration determined by the analysis unit.

12. A gas detection device for detecting a gas in a defined monitoring area, the monitoring area including structure for processing the gas, the device comprising:
a radiation source transmitting radiation through the monitoring area;
a receiver with a radiation detector configured to receive radiation from said radiation source after passing through the monitoring area, said receiver generating radiation data as a function of the radiation received;
an analysis unit configured to receive the radiation data from the receiver, said analysis unit being configured to analyze the received radiation from the radiation data to determine a concentration of the gas unintentionally discharged within the monitoring area; and
a camera configured to record an image of the monitoring area, said camera being activated as a function of the gas concentration determined by said analysis unit.

13. The gas detection device in accordance with claim 12 , wherein:
said camera is configured to have the recorded image include objects in the monitoring area.

14. The gas detection device in accordance with claim 12 , wherein:
said camera is configured to have the image include information on a source of gas in the monitoring area.

15. The gas detection device in accordance with claim 12 , wherein:
said analysis unit also determines from the radiation data if a fault indication exits in the monitoring area;
said camera is configured to have the image include objects causing the fault indication.

16. The gas detection device in accordance with claim 12 , wherein:
said analysis unit also determines from the radiation data if a fault indication exits in the monitoring area;
said camera is configured to provide an image of the monitoring area if a fault indication exits in the monitoring area.

17. The gas detection device in accordance with claim 13 , wherein:
said analysis unit also determines from the radiation data if a fault indication exits in the monitoring area;
said camera is configured to provide an image of the monitoring area if a fault indication exits in the monitoring area.

18. A gas detection device for detecting gas in a defined monitoring area, the device comprising:
a radiation source transmitting radiation through the monitoring area;
a receiver with a radiation detector configured to receive radiation from said radiation source after passing through the monitoring area, said receiver generating radiation data as a function of the radiation received;
an analysis unit configured to receive the radiation data from the receiver, said analysis unit being configured to analyze the received radiation from the radiation data to determine a gas concentration within the monitoring area, said analysis unit also determining from the radiation data if a fault indication exits in the monitoring area; and
a camera configured to record an image of the monitoring area, said camera b

Assignees

• Draeger Safety Ag & Co Kgaa

Inventors

• Oertel Marcus
• Diekmann Wilfried

Classifications

• H04N23/11

  for generating image signals from visible and infrared light wavelengths · CPC title

• H04N23/51

  Housings · CPC title

• G01N2021/3513

  Open path with an instrumental source · CPC title

• G06T2207/10048

  Infrared image · CPC title

• G08B21/14

  Toxic gas alarms (G08B21/16 takes precedence) · CPC title