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21. 发明申请

US20100266451A1 Sensing device 失效
标题翻译：感应装置
公开(公告)号：US20100266451A1
公开(公告)日：2010-10-21
申请号：US12798936
申请日：2010-04-14
申请人： Tomoya Yorita , Junichiro Yamakawa , Shigenori Watanabe , Mitsuaki Koyama
发明人： Tomoya Yorita , Junichiro Yamakawa , Shigenori Watanabe , Mitsuaki Koyama
IPC分类号： G01N30/00
CPC分类号： G01N5/02 , G01N29/022 , G01N29/036 , G01N29/32 , G01N29/34 , G01N2291/0256 , G01N2291/0426
摘要： To shorten the time required for an oscillation frequency to stabilize in a sensing device sensing a substance to be sensed by using the fact that a natural frequency of a piezoelectric resonator changes when the substance to be sensed is adsorbed by an adsorption layer formed on the piezoelectric resonator. A sensing device includes: an oscillator circuit 4 oscillating a quartz-crystal resonator 12; and an intense excitation circuit that is formed by the oscillator circuit 4 including a series circuit of a resistor 52 and a third transistor 53 of PNP type and that intensely excites the quartz-crystal resonator 12 connected to the oscillator circuit 4 for a period of time preset by a one-shot circuit 22 by supplying the quartz-crystal resonator 12 with high power equal to or more than twice regular power supplied at the time of the measurement of the substance to be sensed, to stabilize the oscillation of the quartz-crystal resonator 12. When the connection of the quartz-crystal resonator 12 is detected, the one-shot circuit 22 brings the oscillator circuit 4 into an aging state and the high power is supplied to the quartz-crystal resonator 12 to intensely excite the quartz-crystal resonator 12, thereby eliminating the distortion and stress of a quartz-crystal plate 20.
摘要翻译：为了缩短通过使用压电谐振器的固有频率在被感测物质被形成在压电体上形成的吸附层吸附而被感测的物质吸收时感应待检测物质的感测装置中的振荡频率稳定所需的时间谐振器。感测装置包括：振荡电路4，振荡石英晶体谐振器12; 以及由包括电阻52和PNP型的第三晶体管53的串联电路的振荡电路4形成的强激励电路，并且将连接到振荡电路4的石英晶体谐振器12强烈激发一段时间通过向石英晶体谐振器12提供等于或大于待测物质测量时提供的两倍常规功率的高功率，由单触发电路22预设，以稳定石英晶体的振荡谐振器12.当检测到石英晶体谐振器12的连接时，单触发电路22使振荡器电路4成为老化状态，并且高功率被提供给石英晶体谐振器12以强烈地激发石英 - 晶体谐振器12，从而消除了石英晶片20的变形和应力。

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