公开(公告)号：US07312450B2

公开(公告)日：2007-12-25

申请号：US10536980

申请日：2004-11-11

申请人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada ,  Atsushi Hironaka

发明人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada ,  Atsushi Hironaka

IPC分类号： G01J5/00

CPC分类号： G01J5/34

摘要： An infrared detecting device for reducing current consumption while maintaining performance is disclosed. The device includes a drive power supply circuit which comprises a current generating circuit and a distribution circuit, and which supplies a drive current to each of signal circuits comprising an I/V conversion circuit, a voltage amplification circuit, a detection circuit and an output circuit. The current generating circuit includes a reference current source, a fixed current source providing a fixed current based on the reference current and a variable current source providing a variable current stepped up or down to any different currents based on the reference current. The distribution circuit distributes the drive current to a part of the signal circuits based on the current from the fixed current source and distributes the drive current to a remaining part of the signal circuits based on the current from the variable current source.

摘要翻译： 公开了一种用于在保持性能的同时降低电流消耗的红外线检测装置。 该装置包括驱动电源电路，其包括电流产生电路和分配电路，并且向包括I / V转换电路，电压放大电路，检测电路和输出电路的每个信号电路提供驱动电流 。 电流产生电路包括参考电流源，基于参考电流提供固定电流的固定电流源和基于参考电流提供向上或向下升至任何不同电流的可变电流的可变电流源。 分配电路基于来自固定电流源的电流将驱动电流分配到信号电路的一部分，并且基于来自可变电流源的电流将驱动电流分配到信号电路的剩余部分。

公开(公告)号：US06313462B1

公开(公告)日：2001-11-06

申请号：US09257509

申请日：1999-02-25

申请人： Hiroshi Matsuda ,  Yuji Takada ,  Teruki Hatatani

发明人： Hiroshi Matsuda ,  Yuji Takada ,  Teruki Hatatani

IPC分类号： G01J510

CPC分类号： G01J5/22 ,  G01J5/14 ,  G01J5/30 ,  G01J5/34

摘要： In an infrared-rays detector, a pyroelectric element detects existence or movement of a human body, and the output signal of the pyroelectric element is converted to a voltage signal. Then, the voltage signal is subjected to waveform analysis. Then, a detection signal is outputted only when a waveform generated by a human body is detected by the waveform analysis. For example, the voltage signal is amplified at two different frequency ranges, and the amplified signals are used for discriminating a signal due to a human body. Then, a noise such as a popcorn noise of the pyroelectric element is prevented to be detected erroneously as generated by a human body.

摘要翻译： 在红外线检测器中，热电元件检测人体的存在或移动，并且将热电元件的输出信号转换为电压信号。 然后，对电压信号进行波形分析。 然后，仅当通过波形分析检测到由人体产生的波形时才输出检测信号。 例如，电压信号在两个不同的频率范围被放大，并且放大的信号用于鉴别由于人体引起的信号。 然后，由人体产生的错误地检测出热电元件的爆米花噪声等噪音的错误检测。

公开(公告)号：US20050285040A1

公开(公告)日：2005-12-29

申请号：US10536980

申请日：2004-11-11

申请人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada ,  Atsushi Hironaka

发明人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada ,  Atsushi Hironaka

IPC分类号： G01V8/12 ,  G01J1/02 ,  G01J1/42 ,  G01J5/34 ,  G01J5/00

CPC分类号： G01J5/34

摘要： An infrared detecting device. The device includes a drive power supply circuit which supplies a drive current to each of signal circuits comprised of an I/V conversion circuit, a voltage amplification circuit, a detection circuit and an output circuit. The drive power supply circuit is comprised of a current generating circuit and a distribution circuit. The current generating circuit includes a reference current source, a fixed current source which provides a fixed current based on reference current and a variable current source which provides a variable current stepped up or down to any of different currents based on the reference current. The distribution circuit distributes the drive current to a part of the signal circuits based on the current from the fixed current source and distributes the drive current to a remaining part of the signal circuits based on the current from the variable current source. The device reduces current consumption while keeping the performance or behavior of the circuits in stable state.

摘要翻译： 一种红外线检测装置。 该装置包括驱动电源电路，其向由I / V转换电路，电压放大电路，检测电路和输出电路组成的每个信号电路提供驱动电流。 驱动电源电路由电流发生电路和分配电路构成。 电流产生电路包括参考电流源，基于参考电流提供固定电流的固定电流源和基于参考电流提供向上或向下升至任何不同电流的可变电流的可变电流源。 分配电路基于来自固定电流源的电流将驱动电流分配到信号电路的一部分，并且基于来自可变电流源的电流将驱动电流分配到信号电路的剩余部分。 该器件降低电流消耗，同时保持电路的性能或行为处于稳定状态。

公开(公告)号：US09212951B2

公开(公告)日：2015-12-15

申请号：US13701867

申请日：2011-06-30

申请人： Suguru Fukui ,  Teruki Hatatani

发明人： Suguru Fukui ,  Teruki Hatatani

IPC分类号： G01J5/34 ,  G01J1/44 ,  G01J1/46 ,  H01C7/02 ,  G08B13/191

CPC分类号： G01J5/34 ,  G01J1/44 ,  G01J1/46 ,  G08B13/191 ,  H01C7/02 ,  H01L2224/48091 ,  H01L2924/00014

摘要： The object detection device includes: a pyroelectric element configured to output a current signal in response to a change in an amount of infrared light; an I/V conversion circuit including an operational amplifier, a capacitive element serving as a feedback circuit, and a discharging circuit, and configured to convert the current signal to a voltage signal; an A/D conversion circuit configured to convert the voltage signal to a first digital signal; a digital filter configured to extract a detection component having a frequency included in a frequency band associated with an object from a waveform represented by the first digital signal by subjecting the first digital signal to an arithmetic processing, and create a second digital signal representing a waveform of the detection component; a judgment circuit configured to detect the target based on the second digital signal; and a control unit configured to control the discharging circuit based on a period corresponding to a predetermined frequency not greater than a lower limit of the frequency band to discharge electric charges stored in the capacitive element.

摘要翻译： 物体检测装置包括：热电元件，被配置为响应于红外光量的变化而输出电流信号; 包括运算放大器，用作反馈电路的电容元件和放电电路的I / V转换电路，并且被配置为将电流信号转换为电压信号; A / D转换电路，被配置为将电压信号转换为第一数字信号; 数字滤波器，被配置为通过对所述第一数字信号进行运算处理，从由所述第一数字信号表示的波形中提取具有与对象相关联的频带中包括的频率的检测分量，并创建表示波形的第二数字信号 的检测部件; 判定电路，被配置为基于所述第二数字信号来检测所述目标; 以及控制单元，被配置为基于对应于不大于所述频带的下限的预定频率的周期来控制所述放电电路，以放电存储在所述电容元件中的电荷。

公开(公告)号：US08552355B2

公开(公告)日：2013-10-08

申请号：US12736598

申请日：2009-04-21

申请人： Suguru Fukui ,  Teruki Hatatani

发明人： Suguru Fukui ,  Teruki Hatatani

IPC分类号： G01J1/44 ,  H03F3/08 ,  G01N15/06

CPC分类号： G08B29/24 ,  G01N21/4738 ,  G01N21/53 ,  G08B17/103 ,  G08B17/107 ,  G08B17/113 ,  H03F3/087

摘要： A current-voltage converting circuit (2) is provided with a first feedback circuit (5) and a correcting transistor (Q1). The first feedback circuit (5) outputs, of an output voltage (V10), a voltage according to a magnitude of a low-frequency component that is not greater than or equal to a predefined first cut-off frequency. The correcting transistor (Q1) extracts a correction current (I21) according to a magnitude of an output of the first feedback circuit (5) from a sensor current (I10). The first feedback circuit (5) has a first integrating circuit (9) and a sample-and-hold circuit (10). The first integrating circuit (9) integrates the output voltage (V10) of a conversion section (3). The sample-and-hold circuit (10) samples and holds an output of the first integrating circuit (9) during a sensing period at which a pulsed detection signal is inputted. Means for preventing an incidence of ambient light onto a light-receiving section can be simplified or omitted as a result.

摘要翻译： 电流 - 电压转换电路（2）具有第一反馈电路（5）和校正晶体管（Q1）。 第一反馈电路（5）根据输出电压（V10）的不同于预定的第一截止频率的低频分量的大小输出电压。 校正晶体管（Q1）根据传感器电流（I10）根据第一反馈电路（5）的输出的大小提取校正电流（I21）。 第一反馈电路（5）具有第一积分电路（9）和采样保持电路（10）。 第一积分电路（9）对转换部分（3）的输出电压（V10）进行积分。 采样和保持电路（10）在输入脉冲检测信号的感测时段期间采样并保持第一积分电路（9）的输出。 结果，可以简化或省略将环境光入射到光接收部分上的装置。

公开(公告)号：US20130082179A1

公开(公告)日：2013-04-04

申请号：US13701867

申请日：2011-06-30

申请人： Suguru Fukui ,  Teruki Hatatani

发明人： Suguru Fukui ,  Teruki Hatatani

IPC分类号： G01J5/34

CPC分类号： G01J5/34 ,  G01J1/44 ,  G01J1/46 ,  G08B13/191 ,  H01C7/02 ,  H01L2224/48091 ,  H01L2924/00014

摘要： The object detection device includes: a pyroelectric element configured to output a current signal in response to a change in an amount of infrared light; an I/V conversion circuit including an operational amplifier, a capacitive element serving as a feedback circuit, and a discharging circuit, and configured to convert the current signal to a voltage signal; an A/D conversion circuit configured to convert the voltage signal to a first digital signal; a digital filter configured to extract a detection component having a frequency included in a frequency band associated with an object from a waveform represented by the first digital signal by subjecting the first digital signal to an arithmetic processing, and create a second digital signal representing a waveform of the detection component; a judgment circuit configured to detect the target based on the second digital signal; and a control unit configured to control the discharging circuit based on a period corresponding to a predetermined frequency not greater than a lower limit of the frequency band to discharge electric charges stored in the capacitive element.

摘要翻译： 物体检测装置包括：热电元件，被配置为响应于红外光量的变化而输出电流信号; 包括运算放大器，用作反馈电路的电容元件和放电电路的I / V转换电路，并且被配置为将电流信号转换为电压信号; A / D转换电路，被配置为将电压信号转换为第一数字信号; 数字滤波器，被配置为通过对所述第一数字信号进行运算处理，从由所述第一数字信号表示的波形中提取具有与对象相关联的频带中包括的频率的检测分量，并创建表示波形的第二数字信号 的检测部件; 判定电路，被配置为基于所述第二数字信号来检测所述目标; 以及控制单元，被配置为基于对应于不大于所述频带的下限的预定频率的周期来控制所述放电电路，以放电存储在所述电容元件中的电荷。

公开(公告)号：US07792553B2

公开(公告)日：2010-09-07

申请号：US10586357

申请日：2005-11-18

申请人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada

发明人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada

IPC分类号： H04B1/38

CPC分类号： H04Q9/00 ,  H04Q2209/40 ,  H04Q2209/823 ,  H04Q2209/883 ,  H04Q2209/886 ,  H05B37/0227

摘要： A wireless sensor device including a sensor configured to sense a target object and provide a sensor signal of varying levels indicative of condition of the target object, a signal processing circuit configured to amplify the sensor signal and provide an amplified electric analog signal, and a detection circuit configured to receive the amplified analog signal and provide a detection output when the electric analog signal goes beyond a predetermined detection threshold. A radio transmitter transmits a radio detection signal in response to the detection output. A power supply is configured to provide an electric power to the signal processing circuit and the radio transmitter and includes a power generating element which converts an external energy into the electric power to be accumulated in the power supply. A controller activates the radio transmitter only in response to the detection output, permitting the radio transmitter to generate the radio detection signal.

摘要翻译： 一种无线传感器装置，包括：传感器，被配置为感测目标对象，并提供指示目标对象的状态的变化等级的传感器信号;信号处理电路，被配置为放大所述传感器信号并提供放大的电模拟信号;以及检测 电路，被配置为当电模拟信号超过预定检测阈值时接收放大的模拟信号并提供检测输出。 无线电发射机响应于检测输出发送无线电检测信号。 电源被配置为向信号处理电路和无线电发射机提供电力，并且包括将外部能量转换成要积聚在电源中的电力的发电元件。 控制器仅响应于检测输出激活无线电发射机，允许无线电发射机产生无线电检测信号。

公开(公告)号：US20070159235A1

公开(公告)日：2007-07-12

申请号：US10586357

申请日：2005-11-18

申请人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada

发明人： Suguru Fukui ,  Teruki Hatatani ,  Yuji Takada

IPC分类号： G05F1/10

CPC分类号： H04Q9/00 ,  H04Q2209/40 ,  H04Q2209/823 ,  H04Q2209/883 ,  H04Q2209/886 ,  H05B37/0227

摘要： A wireless sensor device of low energy consumption operates over a prolonged period of time for providing a reliable sensor result. The wireless sensor device includes a sensor configured to sense a target object and provide a sensor signal of varying levels indicative of condition of the target object, a signal processing circuit configured to amplify the sensor signal and give an amplified electric analog signal, and a detection circuit configured to receive the amplified analog signal and provide a detection output when the electric analog signal goes beyond a predetermined detection threshold. Also included in the device is a radio transmitter which transmits a radio detection signal in response to the detection output. Further, the device includes a power supply configured to provide an electric power to the signal processing circuit and the radio transmitter; and a power generating element which converts an external energy into the electric power to be accumulated in the power supply. The controller is included to activate the radio transmitter only in response to the detection output, permitting the radio transmitter to generate the radio detection signal. Thus, the radio transmitter can be kept inactivated until receiving the detection output, thereby saving energy to prolong the operating life of the device.

摘要翻译： 低能耗的无线传感器设备在长时间内运行，以提供可靠的传感器结果。 所述无线传感器装置包括传感器，所述传感器被配置为感测目标对象并提供指示所述目标对象的状态的变化等级的传感器信号;信号处理电路，被配置为放大所述传感器信号并给出放大的电模拟信号;以及检测 电路，被配置为当电模拟信号超过预定检测阈值时接收放大的模拟信号并提供检测输出。 设备中还包括响应于检测输出发送无线电检测信号的无线电发射机。 此外，该装置包括被配置为向信号处理电路和无线电发射机提供电力的电源; 以及将外部能量转换成要积聚在电源中的电力的发电元件。 仅仅响应于检测输出而包括控制器以激活无线电发射机，允许无线电发射机产生无线电检测信号。 因此，无线电发射机可以保持失活直到接收到检测输出，从而节省能量以延长设备的使用寿命。

公开(公告)号：US5949072A

公开(公告)日：1999-09-07

申请号：US972867

申请日：1997-11-18

申请人： Yuji Takada ,  Teruki Hatatani ,  Toshio Fujimura ,  Shinji Sakamoto

发明人： Yuji Takada ,  Teruki Hatatani ,  Toshio Fujimura ,  Shinji Sakamoto

IPC分类号： G01J5/10 ,  G01J5/00

CPC分类号： G01J5/10

摘要： A pyroelectric infrared ray sensor is constituted with a current-voltage converting circuit utilizing an impedance of feedback capacity, obtained by adding the feedback capacity to an operational amplifier receiving as an input an element current from a pyroelectric element, whereby the current-voltage converting circuit can be improved in S/N ratio without altering characteristics of the pyroelectric element.

摘要翻译： 热电式红外线传感器由利用反馈容量阻抗的电流 - 电压转换电路构成，该电路电压转换电路是通过将反馈电容加到从热电元件接收元件电流作为输入的运算放大器，由此电流 - 电压转换电路 可以提高S / N比，而不改变热电元件的特性。

公开(公告)号：US5917187A

公开(公告)日：1999-06-29

申请号：US972907

申请日：1997-11-18

申请人： Yuji Takada ,  Toshio Fujimura ,  Teruki Hatatani ,  Shinji Sakamoto

发明人： Yuji Takada ,  Toshio Fujimura ,  Teruki Hatatani ,  Shinji Sakamoto

IPC分类号： G01J1/42 ,  G01J5/02 ,  G01J5/34 ,  H03K17/94 ,  G01J5/10

CPC分类号： H03K17/941

摘要： A pyroelectric infrared ray sensor includes a voltage amplifying circuit provided with a signal amplifying part having a non-inverting amplifier, with an integrating circuit, and with voltage dividing resistors connected at a position where an input V.sub.IN to the voltage amplifying circuit and an output V.sub.B of the integrating circuit are resistance-divided to a non-inverting input terminal of the signal amplifying part which is practically formed by an operating amplifier, wherein the signal amplifying part includes a low-pass filter formed by a resistor and a capacitor, whereby the electrostatic capacity of the required capacitor can be minimized, and the entire circuit can be minimized in size and also in manufacturing costs.

摘要翻译： 热电式红外线传感器包括具有积分电路的设置有具有非反相放大器的信号放大部分的电压放大电路，以及连接到电压放大电路的输入VIN和输出VB的位置的分压电阻 积分电路的电阻分压为实际上由运算放大器形成的信号放大部分的非反相输入端，其中信号放大部分包括由电阻器和电容器形成的低通滤波器，由此， 所需电容器的静电容量可以最小化，整个电路的尺寸和制造成本都可以最小化。