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    • 43. 发明授权
    • Fire detector and noise de-influence method
    • 火灾探测器和噪声去影响方法
    • US06329922B1
    • 2001-12-11
    • US09624480
    • 2000-07-24
    • Naoki KosugiMasayuki Ito
    • Naoki KosugiMasayuki Ito
    • G08B1700
    • G08B29/24G08B17/107
    • It is prevented that a malfunction occurs because of a noise. A smoke detection section samples as a smoke detection signal a signal digitized after being output from a light reception section when a light emission section glows, and updates a previous smoke detection signal. A noise detection section samples as a noise detection signal a signal output from the light reception section when the light emission section is not driven to glow. When the noise detection signal exceeds a predetermined noise level, a noise de-influence unit disables updating of the previous smoke detection signal with the newly sampled smoke detection signal so as to process a noise.
    • 防止因噪音而发生故障。 烟雾检测部作为烟雾检测信号进行采样,当发光部分发光时,从光接收部分输出后被数字化的信号,并更新先前的烟雾检测信号。 当发光部未被驱动发光时,噪声检测部将来自光接收部的信号作为噪声检测信号进行采样。 当噪声检测信号超过预定噪声电平时,噪声去影响单元利用新采样的烟雾检测信号来禁止更新先前的烟雾检测信号,以便处理噪声。
    • 45. 发明授权
    • Method for preparing zircon powder
    • 制备锆石粉的方法
    • US5250480A
    • 1993-10-05
    • US985455
    • 1992-12-03
    • Hirokuni HoshinoToshiyuki MoriHiroshi YamamuraNaoki Kosugi
    • Hirokuni HoshinoToshiyuki MoriHiroshi YamamuraNaoki Kosugi
    • C01B33/20C04B35/48
    • C01B33/20
    • A method for preparing zircon powder, which comprises mixing (1) silica sol and (2) an aqueous zirconium oxychloride solution having a concentration which would be from 0.1 to 2 mols/l after mixed with the silica sol, in a SiO.sub.2 /ZrO.sub.2 molar ratio of from 0.95 to 1.10, heating the mixture to hydrolyze the zirconium oxychloride, followed by dehydration treatment to obtain a powder, heating the powder from room temperature to a calcination temperature over a period of from 0.7 to 30 hours and calcining the powder at a temperature of from 1,200.degree. to 1,400.degree. C. for a period of time satisfying the relation of:t.gtoreq.116-0.08Twhere t is the calcination time (hr) and T is the calcination temperature (.degree.C.), or heating the powder from room temperature to a calcination temperature over a period of from 0.8 to 70 hours and calcining the powder at a temperature higher than 1,400.degree. C. and not higher than 1,700.degree. C. for a period of time satisfying the relation of:t.gtoreq.18-0.01Twhere t is the calcination time (hr) and T is the calcination temperature (.degree.C.).
    • 一种制备锆石粉末的方法,其包括在SiO 2 / ZrO 2摩尔中混合(1)硅溶胶和(2)与硅溶胶混合后浓度为0.1至2摩尔/升的氯氧化锆水溶液 比例为0.95〜1.10,加热混合物水解氯氧化锆,然后进行脱水处理,得到粉末,将粉末从室温加热至煅烧温度,时间为0.7〜30小时,并将粉末在 温度为1200〜1400℃,时间满足以下关系:t> / = 116-0.08T其中t为煅烧时间(hr),T为煅烧温度(℃),或 将粉末从室温加热至煅烧温度0.8〜70小时,并在高于1400℃,不高于1700℃的温度下煅烧粉末,时间满足以下关系: t> / = 18-0.01T其中t是 煅烧时间(hr),T为煅烧温度(℃)。