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    • 11. 发明专利
    • Gas leak alarming device
    • 气体泄漏报警装置
    • JPS59143947A
    • 1984-08-17
    • JP1840883
    • 1983-02-07
    • Matsushita Electric Ind Co Ltd
    • NORISADA YOSHIAKISHINODA ISAOSAKAMOTO SUSUMUMANABE TAKAHIRO
    • G08B21/00G01N27/12G08B21/16
    • G01N27/122
    • PURPOSE:To obtain a gas leak alarming stably operated even if temp. dependence due to the kind of gas and the irregularity of heater 4 are not considered, by constantly controlling the temp. of a sensor 3 by providing the heater, a heater voltage control circuit and a thermocouple. CONSTITUTION:A thermocouple 16 for detecting the temp. of a sensor 3 is embedded in the sensor 3 and connected to a heater voltage control circuit 5 so as to constantly control the output thereof whereupon an element temp. is made constant regardless of a circumferential temp., voltage and high concn. gas. When combustible gas is contacted with the sensor 3, the potential at the connection point with a resistor 10 and, when it becomes higher than the potential at the connection point D of resistors 17, 18 each for applying a reference level, a voltage discriminating circuit 19 and a drive circuit 13 are operated to alarm the gas leakage by a lamp 14 and a buzzer 15.
    • 目的:获得即使温度稳定运行的气体泄漏报警。 通过不断控制温度,不考虑由于气体的种类和加热器4的不规则性引起的依赖性。 传感器3通过提供加热器,加热器电压控制电路和热电偶。 构成:用于检测温度的热电偶16。 传感器3嵌入到传感器3中并连接到加热器电压控制电路5,以恒定地控制传感器3的输出。 无论圆周温度,电压和高电压如何,都是恒定的。 加油站。 当可燃气体与传感器3接触时,与电阻器10的连接点处的电位,当其变得高于电阻器17,18的连接点D处的电位,用于施加参考电平时,电压鉴别电路 19和驱动电路13被操作以报警灯14和蜂鸣器15的气体泄漏。
    • 12. 发明专利
    • Humidity detecting apparatus
    • 湿度检测装置
    • JPS5968659A
    • 1984-04-18
    • JP17926782
    • 1982-10-13
    • Citizen Watch Co Ltd
    • MURATA MITSUHIROHANAOKA TADASHI
    • G01N27/12
    • G01N27/122
    • PURPOSE:To decrease the size of a titled apparatus and electric power consumption by utilizing a C-MOS ring oscillator using an element for relative humidity detection having relative humidity and resistance converting characteristic as a feed-back resistance to convert the relative humidity to a digital value. CONSTITUTION:The humidity detecting apparatus 17 is composed of the C-MOS ring oscillator 21 using a relative humidity detecting element 6 consisting of ZnO-Li2O-V2O5 ceramic humidity detecting element as the feedback resistance, a variable demultiplier circuit 23, an up counter 24, a latch circuit 25, a demultiplication ratio setting circuit 26, etc. The oscillator 21 has a capacitor 27', a current-limiting resistance 28, C-MOS and NAND circuit 29 and C-MOS inverters 30, 31 besides the element 6. The digital value varying with the relative humidity in atmosphere is latched to the circuit 25.
    • 目的:通过利用具有相对湿度和电阻转换特性的相对湿度检测元件作为反馈电阻的C-MOS环形振荡器来减小标题装置的尺寸和电力消耗,将相对湿度转换为数字 值。 构成:湿度检测装置17由使用由ZnO-Li 2 O-V 2 O 5陶瓷湿度检测元件构成的相对湿度检测元件6作为反馈电阻的C-MOS环形振荡器21,可变分频器电路23,升序计数器24 锁存电路25,分压比设定电路26等。除了元件6之外,振荡器21具有电容器27',限流电阻28,C-MOS和NAND电路29以及C-MOS反相器30,31 大气相对湿度变化的数字值被锁存到电路25。
    • 13. 发明专利
    • Gas detector
    • 气体检测器
    • JPS5913946A
    • 1984-01-24
    • JP12293182
    • 1982-07-16
    • Toshiba Corp
    • KATSURA MASAKITAKIGAWA OSAMUSHIRATORI MASAYUKIHIRAKI HIDEAKI
    • G01N27/04G01N27/12
    • G01N27/122
    • PURPOSE:To detect the presence of reducing gas to be detected which increases the sensitivity of a gas sensing element in a low temperature state, by putting the gas sensing element normally in a high temperature state to detect the reducing gas, and placing the gas sensing element in the low temperature state only when the presence of the reducing gas is confirmed in the high temperature state. CONSTITUTION:The gas sensing element 1 is held in the high temperature state firstly by a temperature control circuit 6 for gas detection. At this time, a switching circuit 3 inputs the output V of a resistance-voltage converting circuit 2 to the 1st voltage comparing circuit 4. This resistance-voltage converting circuit 2 increases in output V as the concentration of the reducing gas increases. The 1st voltage comparing circuit 4 has a set value V1 as the detection level of the reducing gas when the gas sensing element 1 is in the high temperature state and decides that the reducing gas is present when a voltage V inputted through the switching circuit is >=V1, thereby outputting a signal Q1. On receicing this output signal Q1, the temperature control circuit 6 operates to place the gas sensing element 1 in the low temperature state.
    • 目的:通过将气体检测元件放置在高温状态,检测还原气体,检测出气体检测元件在低温状态下的灵敏度提高的被检测的还原气体的存在,并将气体检测 只有当在高温状态下确认还原气体的存在时,才能在低温状态下进行。 构成:气体检测元件1首先由用于气体检测的温度控制电路6保持在高温状态。 此时,开关电路3将电阻 - 电压转换电路2的输出V输入到第一电压比较电路4.该电阻 - 电压转换电路2随着还原气体浓度的增加而增大输出V。 第一电压比较电路4具有设定值V1作为气体检测元件1处于高温状态时的还原气体的检测水平,并且当通过开关电路输入的电压V> = V1,从而输出信号Q1。 在接收该输出信号Q1时,温度控制电路6操作以将气体感测元件1置于低温状态。
    • 14. 发明专利
    • Gas detection method
    • 气体检测方法
    • JPS593344A
    • 1984-01-10
    • JP11432882
    • 1982-06-30
    • Fuigaro Giken Kk
    • YAMAGUCHI TAKASHIKIRA MITSUJISUNAHARA SHIYOUZABUROU
    • G01N27/12G08B21/00G08B21/16
    • G01N27/122
    • PURPOSE:To prevent deterioration of a gas detection element of self-heating type for detecting as concn. from its electric conductivity, by lowering the temp. of the element after a prescribed delay time when a gas not above a prescribed concn. is present. CONSTITUTION:Power supply is turned on, a prescribed voltage is applied to the element 3 and its heater. When a gas concn. in the atmosphere exceeds an alarm concn., a comparator C1 actuates a buzzer 4. When the gas concn. in the atmosphere is in the range defined by comparators C2 and C3, FET 10 is made nonconductive, and a CR timer T1 begins to act. When it is charged, a transistor Tr1 is made nonconductive, and voltage applied to the element 3 is dropped. Thereafter, when a comparator C4 outputs H level, a CR timer T2 is actuated, after charging, the transistor Tr1 is again made conductive, and the voltage applied to the element 3 is again raised. When a comparator C5 outputs H level, the FET 10 is made conductive, and the timers 1, 2 are discharged.
    • 目的:防止用于检测浓度的自热型气体检测元件的劣化。 从其导电性,通过降低温度。 在规定的延迟时间之后,当不在规定的浓度以上的气体时, 存在。 构成:电源打开,规定的电压施加到元件3及其加热器。 当气体浓 在大气中超过报警浓度时,比较器C1启动蜂鸣器4.当气体浓度 在大气中由比较器C2和C3限定的范围内,使FET10变为不导通,并且CR定时器T1开始作用。 当其被充电时,晶体管Tr1被制成不导通,并且施加到元件3的电压下降。 此后,当比较器C4输出H电平时,CR定时器T2被激活,在充电之后,晶体管Tr1再次导通,并且施加到元件3的电压再次升高。 当比较器C5输出H电平时,FET 10导通,并且定时器1,2被放电。
    • 16. 发明专利
    • 制御装置
    • 控制装置
    • JP2016065732A
    • 2016-04-28
    • JP2014193197
    • 2014-09-23
    • 株式会社デンソー
    • 西本 智史梅野 将史山田 雄治
    • G01N27/41
    • G01N33/0073G01N27/045G01N27/122
    • 【課題】インピーダンスの検出精度の低下が抑制された制御装置を提供する。 【解決手段】気体濃度センサ200へ掃引電流を供給する掃引回路10と、掃引電流を検出するための電流検出用抵抗20と、気体濃度センサのインピーダンスを算出する処理回路30と、を有する。掃引電流は定電圧回路が出力する定電圧と基準抵抗の抵抗値とに依存し、基準抵抗の製造バラツキの増減傾向と、電流検出用抵抗の製造バラツキの増減傾向とが同一になっている。処理回路は、電流検出用抵抗の抵抗値に気体濃度センサの印加電圧の時間変化分を乗算した値を電流検出用抵抗の印加電圧の時間変化分でもって割ることで、インピーダンスを算出する。 【選択図】図1
    • 要解决的问题:提供一种能够抑制阻抗检测精度降低的控制装置。解决方案:控制装置包括:扫描电路10,其向气体浓度传感器200提供扫描电流; 检测扫描电流的电流检测电阻20; 以及计算气体浓度传感器的阻抗的处理电路30。 扫描电路取决于来自恒压电路的恒定电压输出和参考电阻的电阻值,并且参考电阻的制造不规则性的变化趋势与电流 - 电压的制造不规则性的变化趋势相同, 检测电阻。 处理电路通过将施加于电流检测电阻的电压的时间变化除以电流检测电阻的电阻值乘以施加到电流检测电阻的电压的时间变化而获得的值来计算阻抗 气体浓度传感器。选择图:图1
    • 19. 发明专利
    • Temperature compensation type steam sensor
    • 温度补偿式蒸汽传感器
    • JP2007147611A
    • 2007-06-14
    • JP2006309826
    • 2006-11-16
    • Therm-O-Disc Incサーム−オー−ディスク・インコーポレイテッド
    • WEST JEFFREY ASTARLING JARAD
    • G01N27/12G01N27/00G01N27/04
    • G01N27/122G01N33/0031G01N33/0063
    • PROBLEM TO BE SOLVED: To provide a chemiresistor sensor system capable of compensating a change of resistance generated by a change of an ambient temperature, and capable of enhancing thereby the ability of the sensor system for detecting a target specimen.
      SOLUTION: This sensor system includes mainly the first resistor, the second resistor, and a load regulator for sensing the change of the ambient temperature, or a switch. At least one of the first resistor and the second resistor is a detecting element having resistance varied in response to the presence of the one ore more of specimens. The switch controls an electric load going across through the first resistor and the second resistor. The switch prevents the electric load going across through the first resistor or the second resistor, or the both thereof from being passed, when the ambient temperature is the first value. and the switch allows the electric load going across through the first resistor or the second resistor, or the both thereof, to be passed, when the ambient temperature is the second value.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供能够补偿由环境温度变化产生的电阻变化的化学电阻传感器系统,并且能够增强传感器系统用于检测目标样品的能力。

      解决方案:该传感器系统主要包括第一电阻器,第二电阻器和用于感测环境温度变化的负载调节器或开关。 第一电阻器和第二电阻器中的至少一个是具有响应于一个或多个样品的存在而变化的电阻的检测元件。 开关控制穿过第一电阻器和第二电阻器的电负载。 当环境温度为第一值时,开关防止穿过第一电阻器或第二电阻器或其两者的电负载通过。 并且当环境温度为第二值时,该开关允许通过第一电阻器或第二电阻器或其两者的电负载通过。 版权所有(C)2007,JPO&INPIT