公开(公告)号：US5576697A

公开(公告)日：1996-11-19

申请号：US229613

申请日：1994-04-19

申请人： Tetsuya Nagashima ,  Masato Aizawa

发明人： Tetsuya Nagashima ,  Masato Aizawa

IPC分类号： G08B17/107 ,  G08B29/18

CPC分类号： G08B29/183 ,  G08B17/107

摘要： A fire alarm system comprises a first light emitting device (11), a first polarizing filter (31), a first light receiving device (21), a second light emitting device (12), a second polarizing filter (32), and a second light receiving device (22). With the above arrangement, the amount of the parallel polarized component to the scattering plane as well as the amount of the perpendicular polarized component to the scattering plane is detected. The ratio between these amounts of light has a correlation with the type of smoke. A calculation section (4) calculates this ratio from the outputs of the light receiving devices (21, 22). A decision section (6) compares the above-described ratio with a reference value which has been preset according to the type of smoke to be detected, whereby the judgement of whether there is a fire or not is performed depending on the type of smoke. Thus, the detection of a fire can be performed from the light scattered by smoke taking into account the type of smoke.

摘要翻译： 火灾报警系统包括第一发光装置（11），第一偏振滤光器（31），第一光接收装置（21），第二发光装置（12），第二偏光滤光器（32）和 第二光接收装置（22）。 通过上述配置，检​​测到散射面的平行偏振成分的量以及与散射面的垂直偏振分量的量。 这些光量之间的比例与烟雾的类型有关。 计算部分（4）根据光接收装置（21,22）的输出计算该比率。 决定部（6）将上述比例与根据待检测的烟雾类型预先设定的基准值进行比较，由此根据烟雾的类型进行是否有火灾的判断。 因此，可以从考虑烟雾的类型的烟雾散射的光中进行火灾的检测。

公开(公告)号：US5280272A

公开(公告)日：1994-01-18

申请号：US944362

申请日：1992-09-14

申请人： Tetsuya Nagashima ,  Masato Aizawa

发明人： Tetsuya Nagashima ,  Masato Aizawa

IPC分类号： G08B17/107 ,  G08B17/10

CPC分类号： G08B17/107

摘要： A fire alarm system which radiates light towards a smoke detecting space. Scattered light resulting from smoke that may exist in the smoke detecting space is judged by a receiver with respect to the type of smoke that may prevail in the space. The presence of a fire is judged by comparing the light that has been received with a set threshold level. The threshold level is set to different levels in accordance with the type of smoke detected.

摘要翻译： 一种用于向烟雾探测空间照射光的火灾报警系统。 可能存在于烟雾探测空间中的由烟雾引起的散射光由接收器根据可能在该空间中占优势的烟雾类型来判断。 通过将接收到的光与设定的阈值水平进行比较来判断火灾的存在。 根据检测到的烟雾类型将阈值设置为不同的水平。

公开(公告)号：US07896544B2

公开(公告)日：2011-03-01

申请号：US11815641

申请日：2006-02-03

申请人： Tetsuya Nagashima ,  Manabu Dohi ,  Yoshimi Kawabata ,  Yasuo Ohmori

发明人： Tetsuya Nagashima ,  Manabu Dohi ,  Yoshimi Kawabata ,  Yasuo Ohmori

IPC分类号： G01K7/00

CPC分类号： G01K7/343

摘要： To provide a heat detector in which thermal responsiveness of a heat detecting unit such as a ceramic element is improved.A heat detector 1 includes a ceramic element 10 accommodated in a sensing-device main body, and measures a temperature in a monitoring area based on a dielectric constant of the ceramic element 10. The Curie point temperature of the ceramic element 10 is set in a predetermined sensitive temperature range.

摘要翻译： 提供一种能够提高诸如陶瓷元件的热检测单元的热响应性的热检测器。 热检测器1包括容纳在感测装置主体中的陶瓷元件10，并且基于陶瓷元件10的介电常数来测量监视区域中的温度。陶瓷元件10的居里点温度设定为 预定的敏感温度范围。

公开(公告)号：US5670947A

公开(公告)日：1997-09-23

申请号：US570520

申请日：1995-12-11

申请人： Tetsuya Nagashima

发明人： Tetsuya Nagashima

IPC分类号： G01N21/53 ,  G08B17/10 ,  G08B17/107

CPC分类号： G08B17/107 ,  G08B17/113

摘要： In a light scattering smoke sensor of the present invention, a first diaphragm portion is disposed just aheat of a light receiving device, and a second diaphragm portion is disposed ahead of the first diaphragm portion. A gap between the first and second diaphragm portion is a smoke introducing portion which introduces smoke to a smoke detecting space via a gap between labyrinth members and the second diaphragm portion.

摘要翻译： 在本发明的光散射烟雾传感器中，第一光阑部分刚好配置在光接收装置中，第二光阑部分设置在第一光阑部分的前方。 第一隔膜部分和第二隔膜部分之间的间隙是烟雾引入部分，其通过迷宫部件和第二隔膜部分之间的间隙将烟雾引入烟雾检测空间。

公开(公告)号：US4596465A

公开(公告)日：1986-06-24

申请号：US595230

申请日：1984-03-30

申请人： Tetsuya Nagashima

发明人： Tetsuya Nagashima

IPC分类号： G01N21/53 ,  G08B17/10 ,  G08B17/107 ,  G01N15/06 ,  G08B17/00

CPC分类号： G08B17/107 ,  G08B17/113

摘要： A scattered light type smoke detector wherein a light source and a photo-cell are so disposed that light from the light source does not directly enter the photo-cell and the photo-cell is adapted to receive light from the light source scattered by intervening smoke to detect the presence of smoke. The photo-cell is accommodated in a cylindrical recess formed in a smoke detecting holder. The inner face of the cylindrical recess and the surface of the smoke detecting holder extending along the optical axis of the photo-cell has light traps formed in sawteeth configuration in section for reflecting light other than the scattered light to be detected into a direction not towards the photo-cell.

摘要翻译： 散射光型烟雾检测器，其中光源和光电池被设置成使得来自光源的光不直接进入光电池，并且光电池适于接收来自通过中间烟雾散射的光源的光 以检测烟雾的存在。 光电池容纳在形成在烟雾检测支架中的圆柱形凹部中。 圆筒形凹部的内表面和沿着光电池的光轴延伸的烟雾检测保持器的表面具有以锯齿状构造的截面形状的光阱，用于将除了待检测的散射光之外的光反射到不朝向 光电池。

公开(公告)号：US07802918B2

公开(公告)日：2010-09-28

申请号：US11815649

申请日：2006-02-03

申请人： Manabu Dohi ,  Tetsuya Nagashima ,  Yoshimi Kawabata ,  Yasuo Ohmori

发明人： Manabu Dohi ,  Tetsuya Nagashima ,  Yoshimi Kawabata ,  Yasuo Ohmori

IPC分类号： G01K1/00 ,  G01K7/00

CPC分类号： G01J5/04 ,  G01J5/02 ,  G01J5/0205 ,  G01J5/0285 ,  G01J5/048 ,  G01J5/06 ,  G01J5/34 ,  G08B17/06

摘要： An object is to build a protective structure which can protect a ferroelectric material from a surrounding environment when the ferroelectric material is used as a heat detecting element of a heat detector, thereby enhancing the reliability of the heat detector.A heat detector includes a heat detecting unit 11 that senses heat in a monitoring area, and a casing 81 that holds the heat detecting unit 11, and the heat detecting unit is held by the casing 11 via a laminating portion 60 which serves to protect the heat detecting unit 11.

摘要翻译： 目的是建立一种保护结构，当将铁电材料用作热检测器的热检测元件时，可以保护铁电材料免受周围环境的影响，从而提高热检测器的可靠性。 热检测器包括感测监视区域中的热的热检测单元11和保持热检测单元11的壳体81，并且热检测单元通过层压部分60被壳体11保持，该层压部分60用于保护 热检测单元11。

公开(公告)号：US20080246623A1

公开(公告)日：2008-10-09

申请号：US10595867

申请日：2004-11-17

申请人： Tetsuya Nagashima

发明人： Tetsuya Nagashima

IPC分类号： G08B17/10

CPC分类号： G01N21/53 ,  G01N21/21 ,  G01N2021/4707 ,  G01N2021/4792 ,  G01N2201/062 ,  G08B17/107 ,  G08B17/113 ,  G08B25/002

摘要： A light scattering type smoke sensor includes a sensor body, light-emitter for emitting light toward an open smoke-sensing space and outputting a light-received signal according to the amount of scattering light received, and a fire judging unit for judging whether fire occurs or not on the basis of the amount of received light determined on the basis of the outputted light-received signal.

摘要翻译： 光散射式烟雾传感器包括：传感器体，用于向开放的烟雾感测空间发射光的发光体，并根据接收到的散射光的量输出光接收信号;火焰判定单元，判断是否发生火灾 或者不是基于基于输出的光接收信号确定的接收光量。

公开(公告)号：US5430307A

公开(公告)日：1995-07-04

申请号：US225299

申请日：1994-04-08

申请人： Tetsuya Nagashima

发明人： Tetsuya Nagashima

IPC分类号： G08B17/107 ,  G01N15/06

CPC分类号： G08B17/107 ,  G08B17/113

摘要： A smoke detector in which a plurality of labyrinth members are disposed on an upper wall in a standing position. In an area surrounded by the labyrinth members, a smoke detecting chamber is formed. A light emitting device and a light detecting device are disposed in such a manner that their optical axes intersect each other at the center of the smoke detecting chamber. In order for the visual field of the light detecting device with respect to the smoke detecting chamber to be restricted to the front area thereof, the labyrinth member which cross the optical axis of the light emitting device is formed so as to be longer than the other labyrinth members, and a gap is formed between the front end of the long labyrinth member and a light shielding plate for preventing the light emitted by the light emitting device from directly reaching the light detecting device. Therefore, the zero-point level of the detection output for light scattered by smoke is lowered to enhance the reliability and effectiveness of the smoke detector.

摘要翻译： 一种烟雾探测器，其中多个迷宫部件以直立位置设置在上壁上。 在由迷宫构件包围的区域中，形成烟雾检测室。 发光装置和光检测装置以其光轴在烟雾检测室的中心彼此相交的方式设置。 为了使光检测装置相对于烟雾检测室的视野被限制在其前方区域，与发光装置的光轴交叉的迷宫式部件形成为比另一方更长 迷宫式构件，并且在长迷宫构件的前端和遮光板之间形成有用于防止由发光装置发射的光直接到达光检测装置的间隙。 因此，降低由烟雾散射的光的检测输出的零点电平，以提高烟雾探测器的可靠性和有效性。

公开(公告)号：US4884222A

公开(公告)日：1989-11-28

申请号：US760312

申请日：1985-07-29

申请人： Tetsuya Nagashima ,  Eiji Matsushita ,  Sadataka Yuchi ,  Akira Kitajima

发明人： Tetsuya Nagashima ,  Eiji Matsushita ,  Sadataka Yuchi ,  Akira Kitajima

IPC分类号： G08B17/00 ,  G08B29/18

CPC分类号： G08B29/183 ,  G08B17/00

摘要： A fire alarm system of the present invention is adapted to compute an approximation equation based on the detection data from a detector or detectors such about a smoke density, a temperature, a gas concentration, etc. and predictively determine a fire based on the approximation equation. The system including computing section for computing an approximation equation approximating a change in the physical phenomenon related to the occurrence of a fire which is output from the detector or detectors, sequentially sampled and stored and for computing a future value of the phenomenon estimated from the approximation by using a predetermined number of the data stored in a storing section. The future vale is compared with a data value preliminarily set in association with the fire alarming and an alarm is generated when the relation therebetween is not within a predetermined range.

摘要翻译： 本发明的火灾报警系统适用于根据来自检测器或检测器的检测数据计算近似方程，例如烟密度，温度，气体浓度等，并根据近似方程式预测火灾 。 该系统包括用于计算逼近近似方程的计算部分，其近似来自从依次采样和存储的检测器或检测器输出的火灾发生相关的物理现象的变化，并用于计算从近似估计的现象的未来值 通过使用存储在存储部分中的预定数量的数据。 将未来值与与火灾报警相关联地预先设定的数据值进行比较，并且当它们之间的关系不在预定范围内时产生报警。

公开(公告)号：US07746239B2

公开(公告)日：2010-06-29

申请号：US10595867

申请日：2004-11-17

申请人： Tetsuya Nagashima

发明人： Tetsuya Nagashima

IPC分类号： G08B17/10

CPC分类号： G01N21/53 ,  G01N21/21 ,  G01N2021/4707 ,  G01N2021/4792 ,  G01N2201/062 ,  G08B17/107 ,  G08B17/113 ,  G08B25/002

摘要： A light scattering type smoke sensor includes a sensor body, light-emitter for emitting light toward an open smoke-sensing space and outputting a light-received signal according to the amount of scattering light received, and a fire judging unit for judging whether fire occurs or not on the basis of the amount of received light determined on the basis of the outputted light-received signal.

摘要翻译： 光散射式烟雾传感器包括：传感器体，用于向开放的烟雾感测空间发射光的发光体，并根据接收到的散射光的量输出光接收信号;火焰判定单元，判断是否发生火灾 或者不是基于基于输出的光接收信号确定的接收光量。