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公开(公告)号：US20060207320A1
公开(公告)日：2006-09-21
申请号：US11352212
申请日：2006-02-13
IPC分类号： G01F1/68
摘要： A low-cost thermal flow meter that has good temperature characteristics and little variations. The thermal flow meter includes a sensor element including a heat-generating resistor and at least two temperature-measuring resistors disposed downstream and upstream. The sensor element is positioned in the flow of a measured medium. It also includes an adjusting means for adjusting a excess temperature (ΔTh=Th−Ta) of the heat-generating resistor, which is the difference between the temperature (Ta) of the measured medium and the temperature (Th) of the heat-generating resistor. The adjusting means adjusts the excess temperature (ΔTh) of the heat-generating resistor depending on the temperature of the measured medium such that the excess temperature becomes smaller as the temperature of the measured medium increases.
摘要翻译： 一种低成本的热流量计，具有良好的温度特性和较小的变化。 热流量计包括传感器元件，其包括发热电阻器和设置在下游和上游的至少两个温度测量电阻器。 传感器元件位于测量介质的流动中。 它还包括调节装置，用于调节发热电阻器的过热温度（DeltaTh = Th-Ta），该温度是测量介质的温度（Ta）与发热量之间的温度（Th）之差 电阻。 调节装置根据测量介质的温度来调节发热电阻器的过温度（DeltaTh），使得过量温度随着测量介质温度的升高而变小。
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公开(公告)号：US20110048127A1
公开(公告)日：2011-03-03
申请号：US12855347
申请日：2010-08-12
CPC分类号： G01N27/18
摘要： Provided is a high-precision, mechanically robust thermal humidity sensor. A detecting element 1 of the thermal humidity sensor of the present invention has a diaphragm (a bridge structure) 2 formed on a planar substrate which is formed from a material with high thermal conductivity such as silicon or ceramic. Formed on the diaphragm 2 are temperature detecting resistors 4, 5, 6, and 7 and a heating resistor 3 arranged in a manner surrounding the temperature detecting resistors. Humidity is detected based on the outputs of the temperature detecting resistors 4, 5, 6, and 7. Accordingly, humidity measurement errors that can possibly occur due to the leakage of heat through the diaphragm 2 to the planar substrate can be reduced.
摘要翻译： 提供了一种高精度，机械坚固的热湿度传感器。 本发明的热湿度传感器的检测元件1具有形成在由诸如硅或陶瓷等导热性高的材料形成的平面基板上的隔膜（桥结构）2。 形成在隔膜2上的是温度检测电阻4,5,6和7以及围绕温度检测电阻器布置的加热电阻3。 基于温度检测电阻4,5,6和7的输出检测湿度。因此，可以减少由于通过隔膜2的热量泄漏到平面基板而可能发生的湿度测量误差。
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公开(公告)号：US07656624B2
公开(公告)日：2010-02-02
申请号：US11656994
申请日：2007-01-24
IPC分类号： H02H7/00
CPC分类号： H02H9/046 , H01L27/0248 , H02H11/002
摘要： An IC power protection circuit functions as a surge protection circuit and reverse connection protection circuit. The IC power protection circuit includes an error amplification circuit, positioned and integrated within an integrated circuit and a transistor positioned as a stand-alone element that is separate from the integrated circuit. The integrated circuit includes a sensor signal processing circuit that processes a signal of a sensor. A transistor protects the integrated circuit against a surge voltage from a battery terminal. A resistor is positioned between an output terminal of an error amplifier and a base terminal of the transistor to provide reverse connection protection. Another resistor is connected between a ground and a connection point between the above resistor and the output terminal to provide overvoltage protection for the integrated circuit. A starting resistor is connected between a collector and base of the transistor.
摘要翻译： IC电源保护电路用作浪涌保护电路和反向连接保护电路。 IC电源保护电路包括位于并集成在集成电路内的误差放大电路和定位为与集成电路分离的独立元件的晶体管。 集成电路包括处理传感器的信号的传感器信号处理电路。 晶体管保护集成电路免受来自电池端子的浪涌电压的影响。 电阻器位于误差放大器的输出端子和晶体管的基极端子之间，以提供反向连接保护。 另一个电阻连接在上述电阻和输出端之间的接地点和连接点之间，为集成电路提供过压保护。 启动电阻连接在晶体管的集电极和基极之间。
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公开(公告)号：US08359919B2
公开(公告)日：2013-01-29
申请号：US12855347
申请日：2010-08-12
CPC分类号： G01N27/18
摘要： Provided is a high-precision, mechanically robust thermal humidity sensor. A detecting element 1 of the thermal humidity sensor of the present invention has a diaphragm (a bridge structure) 2 formed on a planar substrate which is formed from a material with high thermal conductivity such as silicon or ceramic. Formed on the diaphragm 2 are temperature detecting resistors 4, 5, 6, and 7 and a heating resistor 3 arranged in a manner surrounding the temperature detecting resistors. Humidity is detected based on the outputs of the temperature detecting resistors 4, 5, 6, and 7. Accordingly, humidity measurement errors that can possibly occur due to the leakage of heat through the diaphragm 2 to the planar substrate can be reduced.
摘要翻译： 提供了一种高精度，机械坚固的热湿度传感器。 本发明的热湿度传感器的检测元件1具有形成在由诸如硅或陶瓷等导热性高的材料形成的平面基板上的隔膜（桥结构）2。 形成在隔膜2上的是温度检测电阻4,5,6和7以及围绕温度检测电阻器布置的加热电阻3。 基于温度检测电阻4,5,6和7的输出检测湿度。因此，可以减少由于通过隔膜2的热量泄漏到平面基板而可能发生的湿度测量误差。
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25.发明授权Disconnection detection circuit for bridge circuit and system including disconnection detecting means 有权用于桥接电路的断路检测电路和包括断线检测装置的系统公开(公告)号：US09229040B2
公开(公告)日：2016-01-05
申请号：US13806827
申请日：2011-06-21
CPC分类号： G01R31/02 , G01D3/08 , G01R31/026 , G01R31/2829
摘要： In an existing disconnection detection circuit for a bridge circuit, consideration is not taken into the fact that an offset voltage or temperature characteristic of a bridge output is degraded. Provided is a disconnection detection circuit for a bridge circuit capable of suppressing a change in a characteristic of a sensor to a minimal extent. A disconnection detection circuit 8a for a bridge circuit in accordance with the present invention comprises conducting means 9 and 10 each of which causes a current to flow from an output terminal of the bridge circuit to a predetermined potential, potential difference detecting means 12 and 13 each of which detects a potential difference between the potential at the output terminal of the bridge circuit and the predetermined potential, and a disconnection detecting means 14 that detects a disconnection on the basis of the outputs of the potential difference detecting means.
摘要翻译： 在现有的桥接电路断路检测电路中，不考虑电桥输出的失调电压或温度特性劣化的事实。 提供一种用于桥接电路的断开检测电路，其能够最小程度地抑制传感器的特性变化。 根据本发明的用于桥接电路的断开检测电路8a包括导通装置9和10，每个导通装置9和10各自使电流从桥接电路的输出端流动到预定电位，电位差检测装置12和13各自 其检测桥电路的输出端的电位与预定电位之间的电位差;以及断开检测装置14，其基于电位差检测装置的输出来检测断开。
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公开(公告)号：US08689608B2
公开(公告)日：2014-04-08
申请号：US12973376
申请日：2010-12-20
IPC分类号： G01N25/18
CPC分类号： G01N25/18
摘要： The present invention provides a high-responsiveness and high-accuracy thermal gas sensor configured to enable gas to be analyzed based on a variation in heat conductivity. The thermal gas sensor includes a substrate 2 with a cavity portion 5, a thin-film support 6 stacked in the cavity portion and comprising a plurality of insulating layers 8a and 8b, and a first heating member 3 and a second heating member 4 both sandwiched between the insulating layers in the thin-film support. The second heating member is located around a periphery of the first heating member. The first heating member is controlled to a temperature higher than a temperature to which the second heating member is controlled. The concentration of ambient gas is measured based on power applied to the first heating member.
摘要翻译： 本发明提供了一种高响应性和高精度的热气传感器，其被配置为使得能够基于导热性的变化来分析气体。 热气体传感器包括：具有空腔部分5的基板2，层叠在空腔部分中的薄膜支撑体6，其包括多个绝缘层8a和8b;以及第二加热构件3和第二加热构件4， 在薄膜载体中的绝缘层之间。 第二加热构件位于第一加热构件的周边周围。 第一加热构件被控制到比第二加热构件被控制的温度高的温度。 环境气体的浓度基于施加到第一加热构件的功率被测量。
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27.发明申请Disconnection Detection Circuit for Bridge Circuit and System Including Disconnection Detecting Means 有权用于桥接电路和包括断路检测装置的系统的断路检测电路公开(公告)号：US20130093432A1
公开(公告)日：2013-04-18
申请号：US13806827
申请日：2011-06-21
IPC分类号： G01R31/02
CPC分类号： G01R31/02 , G01D3/08 , G01R31/026 , G01R31/2829
摘要： In an existing disconnection detection circuit for a bridge circuit, consideration is not taken into the fact that an offset voltage or temperature characteristic of a bridge output is degraded. Provided is a disconnection detection circuit for a bridge circuit capable of suppressing a change in a characteristic of a sensor to a minimal extent. A disconnection detection circuit 8a for a bridge circuit in accordance with the present invention comprises conducting means 9 and 10 each of which causes a current to flow from an output terminal of the bridge circuit to a predetermined potential, potential difference detecting means 12 and 13 each of which detects a potential difference between the potential at the output terminal of the bridge circuit and the predetermined potential, and a disconnection detecting means 14 that detects a disconnection on the basis of the outputs of the potential difference detecting means.
摘要翻译： 在现有的桥接电路断路检测电路中，不考虑电桥输出的失调电压或温度特性劣化的事实。 提供一种用于桥接电路的断开检测电路，其能够最小程度地抑制传感器的特性变化。 根据本发明的用于桥接电路的断开检测电路8a包括导通装置9和10，每个导通装置9和10各自使电流从桥接电路的输出端流动到预定电位，电位差检测装置12和13各自 其检测桥电路的输出端的电位与预定电位之间的电位差;以及断开检测装置14，其基于电位差检测装置的输出来检测断开。
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公开(公告)号：US20070211394A1
公开(公告)日：2007-09-13
申请号：US11656994
申请日：2007-01-24
IPC分类号： H02H7/00
CPC分类号： H02H9/046 , H01L27/0248 , H02H11/002
摘要： An IC power protection circuit functions as a surge protection circuit and reverse connection protection circuit. The IC power protection circuit includes an error amplification circuit, positioned and integrated within an integrated circuit and a transistor, is positioned as a stand-alone element that is separate from the integrated circuit. The integrated circuit includes a sensor signal processing circuit that processes a signal of a sensor. A transistor protects the integrated circuit against a surge voltage from a battery terminal. A resistor is positioned between an output terminal of an error amplifier and a base terminal of the transistor to provide reverse connection protection. Another resistor is connected between a ground and a connection point between the above resistor and the output terminal to provide overvoltage protection for the integrated circuit. A starting resistor is connected between a collector and base of the transistor.
摘要翻译： IC电源保护电路用作浪涌保护电路和反向连接保护电路。 IC电源保护电路包括位于并集成在集成电路和晶体管内的误差放大电路，被定位为与集成电路分离的独立元件。 集成电路包括处理传感器的信号的传感器信号处理电路。 晶体管保护集成电路免受来自电池端子的浪涌电压的影响。 电阻器位于误差放大器的输出端子和晶体管的基极端子之间，以提供反向连接保护。 另一个电阻连接在上述电阻和输出端之间的接地点和连接点之间，为集成电路提供过压保护。 启动电阻连接在晶体管的集电极和基极之间。
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公开(公告)号：US08203102B2
公开(公告)日：2012-06-19
申请号：US12724399
申请日：2010-03-15
IPC分类号： H05B1/01
CPC分类号： G01F1/692 , G01F1/684 , G01F1/6845 , G01F1/698
摘要： A thermal type flow sensor measures a flow rate of a fluid by means of a heat resistive element having a temperature dependency. The sensor is comprised of: plural heat resistive elements used for a flow rate measurement; and a driver circuit for controlling a current applied to these heat resistive elements to cause their heating. The driver circuit is configured to sense a resistance change of a lower-temperature side heat resistive element among the plural heat resistive elements and to control the current to be applied to the plural heat resistive elements in accordance with a sensed value of the lower-resistance's variation.
摘要翻译： 热式流量传感器通过具有温度依赖性的耐热元件来测量流体的流量。 传感器包括：用于流量测量的多个热阻元件; 以及用于控制施加到这些热阻元件以引起其加热的电流的驱动器电路。 驱动电路被配置为感测多个耐热元件中的低温侧热电阻元件的电阻变化，并且根据下电阻元件的感测值来控制施加到多个耐热元件的电流 变异。
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公开(公告)号：US20060037390A1
公开(公告)日：2006-02-23
申请号：US11202017
申请日：2005-08-12
IPC分类号： G01F1/68
CPC分类号： G01F1/6845 , G01F25/0007
摘要： A thermal type air flow meter that makes it possible to precisely and easily determine whether a sensor element is a non-defective or a defective by screening is provided. First and second diaphragm sections composed of an electrical insulating film are formed in a semiconductor substrate. A heating resistor and a resistor for intake air temperature sensor are disposed on them to obtain a sensor element for thermal type air flow meters. The length of the short sides W1 of the rectangular first diaphragm section is made substantially equal to the length of the short sides of the second diaphragm section rectangular as well. Thus, the pressures applied to each of the diaphragm sections are substantially identical with each other in pressurization during screening.
摘要翻译： 提供一种热式空气流量计，其能够精确且容易地确定传感器元件是否为缺陷或通过筛选的缺陷。 在半导体衬底中形成由电绝缘膜构成的第一和第二隔膜部分。 在其上设置加热电阻器和进气温度传感器用电阻器，以获得用于热式空气流量计的传感器元件。 矩形第一隔膜部分的短边W 1的长度也与第二隔膜部分的短边长度基本相等。 因此，施加到每个隔膜部分的压力在筛选期间的加压中基本相同。
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