公开(公告)号：US5021739A

公开(公告)日：1991-06-04

申请号：US426188

申请日：1989-10-25

申请人： Koichi Yokosawa ,  Hideki Kohno

发明人： Koichi Yokosawa ,  Hideki Kohno

IPC分类号： A61B5/055 ,  G01R33/035 ,  G01R33/24 ,  G01R33/36

CPC分类号： G01R33/0358 ,  G01R33/24 ,  Y10S505/844 ,  Y10S505/846

摘要： An RF magnetic flux measuring circuit uses a SQUID fluxmeter of which the input and output characteristics establish a periodic function, and in which a pick-up coil for picking up desired RF magnetic flux and an input coil of the SQUID fluxmeter are connected to form a closed loop which is a superconducting loop for transferring the magnetic flux to the SQUID. There is also provided an inductance adjusting device which adjusts the inductance of the superconducting loop to limit the magnetic flux that crosses the SQUID fluxmeter within a range of a single-valued function in said input and output characteristics.

摘要翻译： RF磁通量测量电路使用输入和输出特性建立周期函数的SQUID磁通计，其中连接用于拾取所需RF磁通的拾波线圈和SQUID磁通计的输入线圈，以形成 闭环，其是用于将磁通传递到SQUID的超导回路。 还提供了一种电感调节装置，其调节超导环路的电感，以在所述输入和输出特性的单值函数的范围内限制穿过SQUID磁通计的磁通量。

公开(公告)号：US20070007546A1

公开(公告)日：2007-01-11

申请号：US11476682

申请日：2006-06-29

申请人： Yasushi Goto ,  Toshiyuki Mine ,  Koichi Yokosawa

发明人： Yasushi Goto ,  Toshiyuki Mine ,  Koichi Yokosawa

IPC分类号： H01L29/74

CPC分类号： G01N27/4141 ,  G01N33/0047 ,  G01N33/005

摘要： The present invention provides a manufacturing method enabling suppression of threshold voltage fluctuation without giving any damage to a gate insulating film when a transistor structure is formed at first in a field effect transistor type of gas sensor and then an electrode with a material responsive to a gas to be detected is formed. The gate insulating film is a film stack including at least an SiO2 film and an SRN (Si-rich nitride) film. The SRN film functions as a etching stopper film when the gate insulating film is exposed by etching of an inter-layer insulating film. Pressure resistance of the gate insulating film is preserved with SiO2. An electric charge in the SRN film can be removed with a lower voltage as compare to that required for removing an electric charge in the Si3N4 film, which enables suppression of threshold voltage fluctuation in gas sensor transistors.

摘要翻译： 本发明提供一种制造方法，能够在场效应晶体管型气体传感器中首先形成晶体管结构之后抑制阈值电压波动，而不会对栅极绝缘膜造成任何损害，然后是具有响应于气体的材料的电极 被形成。 栅绝缘膜是至少包括SiO 2膜和SRN（富Si的氮化物）膜的膜堆叠。 当栅极绝缘膜通过蚀刻层间绝缘膜而暴露时，SRN膜用作蚀刻停止膜。 栅极绝缘膜的耐压性由SiO 2保持。 与去除Si 3 N 4 N 3膜中的电荷相比，SRN膜中的电荷可以以较低的电压去除，这使得能够抑制 气体传感器晶体管的阈值电压波动。

公开(公告)号：US20060114113A1

公开(公告)日：2006-06-01

申请号：US11070460

申请日：2005-03-03

申请人： Koichi Yokosawa ,  Sadaki Nakano ,  Yasushi Goto

发明人： Koichi Yokosawa ,  Sadaki Nakano ,  Yasushi Goto

IPC分类号： G01N7/00

CPC分类号： G01N33/0063 ,  G01N27/123

摘要： A gas detection system capable of suppressing the power consumption of the system using gas sensors required for heating for measurement at high accuracy, comprising a server and a plurality of gas sensors connected by way of wireless communication with the server, in which each of the gas sensors is provided with a heater, a controller for controlling the ON-OFF for the power supply to the heater and a comparator for comparing the detected gas concentration with a predetermined threshold value. In the gas detection system, electric power is not usually supplied to the heater in each of the gas sensors and the gas sensor measures the gas concentration at a low accuracy and always compares it with the threshold value. In a case where the gas concentration exceeds the threshold value in one of the gas sensors, it turns the heater of its own to ON thereby switching the measurement to that at high accuracy and turns the heater to OFF upon completing the measurement. At the same time, it informs the detection for the excess of threshold value to the server and the server lowers the threshold value of the gas sensors in the vicinity of the gas sensor that has informed the detection for the excess of threshold value to make the monitoring level severer.

摘要翻译： 一种气体检测系统，其能够以高精度抑制用于加热测量所需的气体传感器的系统的功率消耗，包括通过与服务器的无线通信连接的服务器和多个气体传感器，其中每个气体 传感器设置有加热器，用于控制对加热器的电源的ON-OFF的控制器和用于将检测到的气体浓度与预定阈值进行比较的比较器。 在气体检测系统中，通常不向每个气体传感器中的加热器供电，并且气体传感器以低精度测量气体浓度，并且始终将其与阈值进行比较。 在其中一个气体传感器中气体浓度超过阈值的情况下，它将其自身的加热器变为ON，从而将测量值以高精度切换，并在完成测量时将加热器转为OFF。 同时，它通知检测到服务器的阈值过大，服务器和服务器降低气体传感器附近的气体传感器的阈值，该气体传感器通知检测阈值超过阈值， 监控级别更严重。

公开(公告)号：US06745063B2

公开(公告)日：2004-06-01

申请号：US09940542

申请日：2001-08-29

申请人： Keiji Tsukada ,  Tsuyoshi Miyashita ,  Akihiko Kandori ,  Daisuke Suzuki ,  Koichi Yokosawa

发明人： Keiji Tsukada ,  Tsuyoshi Miyashita ,  Akihiko Kandori ,  Daisuke Suzuki ,  Koichi Yokosawa

IPC分类号： A61B505

CPC分类号： A61B5/04005 ,  A61B5/4064

摘要： A biomagnetic field measuring apparatus includes a plurality of SQUID magneto-meters for measuring a biomagnetic field generated from a living body, living-body signal measuring devices and for measuring and collecting living-body signals generated periodically, an operation processing device for operation processing the biomagnetic field signal and the living-body signal measured simultaneously as pairs in a plurality of directions, and a display unit for displaying a result of the operation processing. Change in time of excitation can be grasped in detail by using a small number of maps without presumption of a magnetic field source and display of many iso-magnetic field maps.

摘要翻译： 生物磁场测量装置包括多个用于测量从生物体产生的生物磁场的SQUID磁电表，生物体信号测量装置，以及用于测量和收集周期性生成的生物体信号的操作处理装置， 生物磁场信号和在多个方向上成对测量的生物体信号以及用于显示操作结果的显示单元。 可以通过使用少量地图来详细了解激发时间的变化，而不考虑磁场源和显示许多等磁场图。

公开(公告)号：US06681131B2

公开(公告)日：2004-01-20

申请号：US09977213

申请日：2001-10-16

申请人： Akihiko Kandori ,  Tsuyoshi Miyashita ,  Daisuke Suzuki ,  Koichi Yokosawa ,  Keiji Tsukada

发明人： Akihiko Kandori ,  Tsuyoshi Miyashita ,  Daisuke Suzuki ,  Koichi Yokosawa ,  Keiji Tsukada

IPC分类号： A61B505

CPC分类号： A61B5/04007 ,  A61B5/7239 ,  A61B5/7285

摘要： An apparatus for measuring bio-magnetic fields includes a plurality of magnetometers for detecting magnetic fields generated from a live body; a driving circuit for driving the magnetometers; a computer for collecting output signals of the driving circuit in the form of data representing at least one waveform of the magnetic fields generated from the live body and for performing an arithmetic processing on the data representing the waveform of magnetic fields, a display unit, and at least one signal processing circuit for processing output signals of the driving circuit. The computer further performs an arithmetic processing of first-order differentiation on the waveform of the magnetic fields in a z direction with respect to time in order to create an arrow map and a contour map. The apparatus can also detect mechanical movement which occurs as blood flows in organs and organs move.

摘要翻译： 一种用于测量生物磁场的装置包括：用于检测从活体产生的磁场的多个磁力计; 用于驱动磁力计的驱动电路; 用于以表示从活体产生的磁场的至少一个波形的数据形式收集驱动电路的输出信号并且对表示磁场波形的数据执行算术处理的计算机，显示单元和 至少一个信号处理电路，用于处理驱动电路的输出信号。 计算机进一步对z方向上的磁场波形进行一阶微分的运算处理，以便产生箭头图和轮廓图。 该装置还可以检测器官和器官中的血液流动时发生的机械运动。

公开(公告)号：US06528994B2

公开(公告)日：2003-03-04

申请号：US09941752

申请日：2001-08-30

申请人： Daisuke Suzuki ,  Atsushi Ninomiya ,  Tsuyoshi Miyashita ,  Akihiko Kandori ,  Keiji Tsukada ,  Koichi Yokosawa

发明人： Daisuke Suzuki ,  Atsushi Ninomiya ,  Tsuyoshi Miyashita ,  Akihiko Kandori ,  Keiji Tsukada ,  Koichi Yokosawa

IPC分类号： G01R3302

CPC分类号： G01R33/24

摘要： A magnetic field measuring apparatus has a magnetic field shielding apparatus including non-magnetic cylindrical members on which high-permeability sheets are located in a state of being partially overlapped with each other. The cylindrical members are located to surround an axis of a first direction concentrically and having a hollow portion, the cylindrical member located on an innermost-side having a first opening at one end of the first direction, a second opening at the other end of the first direction, and a third opening penetrating the cylindrical members in a direction perpendicular to the axis of the first direction. In addition, the magnetic field measuring apparatus has a living-body holder located in an inner-side space of the cylindrical member and a cryostat inserted into the third opening and maintaining SQUID magnetic-flux meters.

公开(公告)号：US20080262757A1

公开(公告)日：2008-10-23

申请号：US12081348

申请日：2008-04-15

申请人： Koichi Yokosawa ,  Sadaki Nakano ,  Kazuo Saitoh

发明人： Koichi Yokosawa ,  Sadaki Nakano ,  Kazuo Saitoh

IPC分类号： G01M3/04

CPC分类号： G01M3/20

摘要： In a leakage detection system configured by arranging a number of gas sensors, a leakage spot is promptly and accurately estimated. An output voltage of the each sensor is converted into concentration, and a time differential coefficient of the concentration is obtained. A leakage spot is estimated to be on a straight line connecting between the sensors for which the time differential coefficient is large.

摘要翻译： 在通过配置多个气体传感器构成的泄漏检测系统中，能够及时准确地估计泄漏点。 将各传感器的输出电压转换成浓度，得到浓度的时间微分系数。 估计泄漏点处于连接时间微分系数大的传感器之间的直线上。

公开(公告)号：US07345590B2

公开(公告)日：2008-03-18

申请号：US11181928

申请日：2005-07-15

申请人： Sadaki Nakano ,  Koichi Yokosawa ,  Yasushi Goto

发明人： Sadaki Nakano ,  Koichi Yokosawa ,  Yasushi Goto

IPC分类号： G08B17/10

CPC分类号： G08B25/08 ,  G08B21/16 ,  G08B21/182 ,  G08B25/007 ,  G08B25/10

摘要： In a hydrogen gas station where a great number of sensors are installed, in case hydrogen leakage occurs, sensors in the vicinity of the leakage location start to transmit a warning to an access point all at once. This causes channel capacity saturation and failure to transmit a warning to the access point. Nodes and the access point are connected to each other by an uplink channel and a downlink channel. The access point detects congested/uncongested status of the uplink channel by using a wireless transmitter module and notifies the nodes of the congested/uncongested status of the channel by means for transmitting onto the downlink channel. Meanwhile, each node controls its transmission operation, according to the hydrogen concentration level detected by its hydrogen sensor and the uplink channel congested/uncongested status notified from the access point. In this way, channel overflow due to access congestion in case of hydrogen leakage can be prevented.

摘要翻译： 在安装有大量传感器的氢气站中，在发生氢泄漏的情况下，泄漏位置附近的传感器开始向接入点一次性发送警告。 这会导致通道容量饱和，并且无法向接入点发送警告。 节点和接入点通过上行链路信道和下行链路信道相互连接。 接入点通过使用无线发射机模块来检测上行链路信道的拥塞/非占用状态，并通过传输到下行链路信道的方式向节点通知信道的拥塞/非占用状态。 同时，每个节点根据其氢传感器检测到的氢浓度水平和从接入点通知的上行链路信道拥塞/非占用状态来控制其传输操作。 以这种方式，可以防止在泄漏的情况下由于访问拥塞而导致的信道溢出。

公开(公告)号：US20070278098A1

公开(公告)日：2007-12-06

申请号：US11806806

申请日：2007-06-04

申请人： Koichi Yokosawa ,  Sadaki Nakano ,  Yasushi Goto

发明人： Koichi Yokosawa ,  Sadaki Nakano ,  Yasushi Goto

IPC分类号： G01N27/26

CPC分类号： G01N27/4141

摘要： It is an object of the present invention to minimize the power for heating of an FET-type gas sensor using an FET to ensure a long operating life.Two terminals 10 and 11 are arranged at a sensitive electrode 31 formed on a gate insulation film of an FET, and different potentials are applied thereto to cause a current to flow. The sensitive electrode 31 functions as a heating element by causing a current to flow in the sensitive electrode 31 which needs to be heated, allowing the FET-type gas sensor to be heated most efficiently. Furthermore, the terminals 10 and 11 configure a part of a temperature detector which measures the temperature of the heated sensitive electrode 31.

摘要翻译： 本发明的一个目的是使用FET的FET型气体传感器的加热功率最小化以确保长的使用寿命。 两个端子10和11布置在形成在FET的栅极绝缘膜上的敏感电极31上，并且施加不同的电位以使电流流动。 敏感电极31通过使电流在需要被加热的敏感电极31中流动而起加热元件的作用，从而能够最有效地加热FET型气体传感器。 此外，端子10和11构成测量加热的敏感电极31的温度的温度检测器的一部分。

公开(公告)号：US07242309B2

公开(公告)日：2007-07-10

申请号：US11070460

申请日：2005-03-03

申请人： Koichi Yokosawa ,  Sadaki Nakano ,  Yasushi Goto

发明人： Koichi Yokosawa ,  Sadaki Nakano ,  Yasushi Goto

IPC分类号： G08B17/10

CPC分类号： G01N33/0063 ,  G01N27/123

摘要： A gas detection system capable of suppressing the power consumption of the system using gas sensors required for heating for measurement at high accuracy, comprising a server and a plurality of gas sensors connected by way of wireless communication with the server, in which each of the gas sensors is provided with a heater, a controller for controlling the ON-OFF for the power supply to the heater and a comparator for comparing the detected gas concentration with a predetermined threshold value. In the gas detection system, electric power is not usually supplied to the heater in each of the gas sensors and the gas sensor measures the gas concentration at a low accuracy and always compares it with the threshold value. In a case where the gas concentration exceeds the threshold value in one of the gas sensors, it turns the heater of its own to ON thereby switching the measurement to that at high accuracy and turns the heater to OFF upon completing the measurement. At the same time, it informs the detection for the excess of threshold value to the server and the server lowers the threshold value of the gas sensors in the vicinity of the gas sensor that has informed the detection for the excess of threshold value to make the monitoring level severer.

摘要翻译： 一种气体检测系统，其能够以高精度抑制用于加热测量所需的气体传感器的系统的功率消耗，包括通过与服务器的无线通信连接的服务器和多个气体传感器，其中每个气体 传感器设置有加热器，用于控制对加热器的电源的ON-OFF的控制器和用于将检测到的气体浓度与预定阈值进行比较的比较器。 在气体检测系统中，通常不向每个气体传感器中的加热器供电，气体传感器以低精度测量气体浓度，并且始终将其与阈值进行比较。 在其中一个气体传感器中气体浓度超过阈值的情况下，它将其自身的加热器变为ON，从而将测量值以高精度切换，并在完成测量时将加热器转为OFF。 同时，它通知检测到服务器的阈值过大，服务器和服务器降低气体传感器附近的气体传感器的阈值，该气体传感器通知检测阈值超过阈值， 监控级别更严重。