公开(公告)号：US20030044042A1

公开(公告)日：2003-03-06

申请号：US10143386

申请日：2002-05-10

Applicant: Detector Electronics Corporation

Inventor： John D. King ,  Paul M. Junck

IPC: G06K009/00

CPC classification number: G08B17/125

Abstract: An apparatus and method for performing first and second imaging processes contemporaneously, in particular where one of the processes is detecting fires based on images of the flames. The apparatus includes an image sensor for producing a video image, a frame grabber for capturing first frames and second frames, a processor for processing the data within the frames, and an output device. The apparatus may also include an adjustment mechanism for adjusting the image settings of the image sensor between settings suitable for flame imaging and non-flame imaging, and a control mechanism for controlling the image settings of the image sensor. In the method at least two first frames are obtained, and a plurality of second frames are obtained. The first and second frames are used for first and second processes. The first and second processes are contemporaneous, so that they are carried out within the same time period without interfering with one another. When the first process is flame detection, individual pairs of pixels having a property such as intensity that meets a first threshold are identified within the first frames, and are assembled into blobs. Additional properties of the pixel pairs and the blobs overall are evaluated in relation with additional thresholds. Blobs or pixels that do not meet the thresholds are excluded. Any blobs remaining after all evaluations are considered fires.

Abstract translation: 一种用于同时执行第一和第二成像过程的设备和方法，特别是其中一个过程基于火焰的图像来检测火灾。 该装置包括用于产生视频图像的图像传感器，用于捕获第一帧和第二帧的帧抓取器，用于处理帧内的数据的处理器和输出装置。 该装置还可以包括用于在适于火焰成像和非火焰成像的设置之间调整图像传感器的图像设置的调节机构和用于控制图像传感器的图像设置的控制机构。 在该方法中，获得至少两个第一帧，并且获得多个第二帧。 第一和第二帧用于第一和第二进程。 第一和第二过程是同时期的，使得它们在相同的时间段内进行而不会彼此干扰。 当第一过程是火焰检测时，在第一帧内识别具有满足第一阈值的强度等性质的各个像素对，并被组装成斑块。 与附加阈值相关地评估像素对和总体的附加属性。 排除不符合阈值的Blob或像素。 所有评估后剩余的任何斑点都被视为火灾。

公开(公告)号：US20030147080A1

公开(公告)日：2003-08-07

申请号：US10359526

申请日：2003-02-05

Applicant: Detector Electronics Corporation

Inventor： Randall G. Sarkis ,  John M. Jarvis

IPC: G01N021/00

CPC classification number: G01N21/359 ,  G01N21/3504

Abstract: An apparatus and method for open-path gas detection. The apparatus includes a radiation source and first and second radiation detectors sensitive to radiation in first and second spectral bands. The long cut-off wavelength of the second spectral band is longer than the long cut-off wavelength of the first spectral band, and the short cut-off wavelength of the second spectral band is shorter than the short cut-off wavelength of the short spectral band, such that the second spectral band is wider than and completely overlaps the first spectral band. Radiation from the radiation source passes through the area to be checked for gas, and is partially absorbed if gas is present. The path between the radiation source and the first and second radiation detectors need not be enclosed, and may exceed 100 meters in length. A processor compares intensity signals from the radiation detectors with a threshold value, and generates an output signal indicating a presence of gas based on the comparison. The method includes the steps of passing radiation through an area, and sensing radiation that has passed through the area within first and second spectral bands, wherein the long cut-off wavelength of the second spectral band is longer than the long cut-off wavelength of the first spectral band, and the short cut-off wavelength of the second spectral band is shorter than the short cut-off wavelength of the short spectral band. The intensities in the spectral bands are compared with a threshold value, and the presence of gas is indicated based on the comparison.

Abstract translation: 用于开放式气体检测的装置和方法。 该装置包括辐射源和对第一和第二光谱带中的辐射敏感的第一和第二辐射检测器。 第二光谱带的长截止波长比第一光谱带的长截止波长长，第二光谱带的短截止波长短于短截止波长 使得第二光谱带宽于第一光谱带并且与第一光谱带完全重叠。 来自辐射源的辐射通过要检查的气体的区域，并且如果存在气体则被部分吸收。 辐射源与第一和第二辐射探测器之间的路径不需要被封闭，并且长度可能超过100米。 处理器将来自辐射检测器的强度信号与阈值进行比较，并且基于该比较产生指示气体存在的输出信号。 该方法包括以下步骤：使辐射通过一个区域，并感测已经穿过第一和第二光谱带内的区域的辐射，其中第二光谱带的长截止波长比长截止波长长 第一光谱带和第二光谱带的短截止波长比短光谱带的短截止波长短。 将光谱带中的强度与阈值进行比较，并且基于比较来指示气体的存在。

公开(公告)号：US20170023402A1

公开(公告)日：2017-01-26

申请号：US15039937

申请日：2014-09-26

Applicant: Detector Electronics Corporation

Inventor： Gary Follett

IPC: G01J1/02 ,  G01J1/04 ,  G08B29/14 ,  G01J1/42

CPC classification number: G01J1/0228 ,  G01J1/0414 ,  G01J1/429 ,  G01J5/0018 ,  G01J5/026 ,  G08B17/113 ,  G08B29/145

Abstract: A flame detector includes an ultraviolet (UV) sensor to detect UV radiation emitted by a flame; a testing apparatus to periodically test function of the flame detector. The testing apparatus includes a UV light emitting diode (UVLED) emitter to emit a test signal and a mirror to reflect the test signal emitted from the UVLED emitter to the UV sensor. A method of testing an ultraviolet (UV) flame detector includes transmitting a test signal from a UV light emitting diode (UVLED) emitter. The test signal is reflected toward a UV sensor of the flame detector, and the test signal received at the UV sensor is evaluated.

Abstract translation: 火焰检测器包括用于检测由火焰发射的紫外线辐射的紫外线（UV）传感器; 一个定期测试火焰探测器功能的测试装置。 测试装置包括发射测试信号的UV发光二极管（UVLED）发射器和用于将从UVLED发射器发射的测试信号反射到UV传感器的反射镜。 紫外线（UV）火焰检测器的测试方法包括从UV发光二极管（UVLED）发射器发送测试信号。 测试信号被反射到火焰检测器的UV传感器，并且评估在UV传感器处接收的测试信号。

公开(公告)号：US20160349226A1

公开(公告)日：2016-12-01

申请号：US15116436

申请日：2015-02-04

Applicant: DETECTOR ELECTRONICS CORPORATION

Inventor： Jitendra S. Chauhan

IPC: G01N33/00 ,  G01N21/3504 ,  G01N21/27

CPC classification number: G01N33/0006 ,  G01N21/0332 ,  G01N21/274 ,  G01N21/3504 ,  G01N2201/12753

Abstract: Embodiments are directed to controlling a flow of a mixture of gas at a plurality of concentrations, controlling a temperature of a chamber over a temperature range, reading, by a computing device comprising a processor, gas absorbance values from a first detector included in the chamber over the plurality of concentrations and over the temperature range, generating at least one of a look-up table and a mathematical formula for the first detector based on the gas absorbance values, and causing the at least one of the look-up table and the mathematical formula to be stored in a second detector.

Abstract translation: 实施例涉及控制多个浓度的气体混合物的流动，在温度范围内控制室的温度，通过包括处理器的计算装置读取包括在室中的第一检测器的气体吸收值 在多个浓度和温度范围内，基于气体吸光度值生成用于第一检测器的查找表和数学公式中的至少一个，并且使查找表和 要存储在第二个检测器中的数学公式。

公开(公告)号：US09506804B2

公开(公告)日：2016-11-29

申请号：US14760608

申请日：2014-01-10

Applicant: Detector Electronics Corporation

Inventor： Liangju Lu ,  John King

IPC: G01N21/00 ,  G01J3/36 ,  G01J3/42 ,  G01N33/00 ,  G01N21/359 ,  G01N21/39 ,  G01N21/3504 ,  G01J3/28

CPC classification number: G01J3/36 ,  G01J3/2823 ,  G01J3/42 ,  G01J2003/423 ,  G01N21/3504 ,  G01N21/359 ,  G01N21/39 ,  G01N33/0031 ,  G01N2021/3513

Abstract: In implementations, an open path gas detector is disclosed that can include imaging or non-imaging optical components. The detector can include components that allow for misalignment of radiation received by the detector of about 1 without causing false alarms. In implementations, the detector can include a beam splitter or a wavelength-division multiplexing filter to allow for more of the radiation received by the detector to be detected by the sensors.

Abstract translation: 在实施方式中，公开了可以包括成像或非成像光学部件的开路气体检测器。 检测器可以包括允许由检测器接收的辐射未对准约1的组件，而不引起假警报。 在实现中，检测器可以包括分束器或波分复用滤波器，以允许检测器接收的更多的辐射由传感器检测。

公开(公告)号：US10302609B2

公开(公告)日：2019-05-28

申请号：US15116436

申请日：2015-02-04

Applicant: Detector Electronics Corporation

Inventor： Jitendra S. Chauhan

IPC: G01N33/00 ,  G01N21/27 ,  G01N21/3504 ,  G01N21/03

Abstract: Embodiments are directed to controlling a flow of a mixture of gas at a plurality of concentrations, controlling a temperature of a chamber over a temperature range, reading, by a computing device comprising a processor, gas absorbance values from a first detector included in the chamber over the plurality of concentrations and over the temperature range, generating at least one of a look-up table and a mathematical formula for the first detector based on the gas absorbance values, and causing the at least one of the look-up table and the mathematical formula to be stored in a second detector.