公开(公告)号：US07305309B2

公开(公告)日：2007-12-04

申请号：US11318998

申请日：2005-12-27

申请人： Kunikazu Shigeta ,  Tamotsu Kobayashi

发明人： Kunikazu Shigeta ,  Tamotsu Kobayashi

IPC分类号： G01F1/66

CPC分类号： G01F1/667 ,  G04F10/10

摘要： A transmission measuring system includes a subject for transmission measurement for outputting, in response to a start signal for measurement from a central processing unit, an output signal including information on a transmission time to be measured. An analog-digital converter converts the output signal into digital data. The central processing unit processes the digital data to obtain the transmission time required for propagating the signal through the subject. A clock signal source provides a clock signal to the central processing unit, and a variable delay unit is interposed between the clock signal source and the analog-digital converter. The central processing unit delivers a delay time control signal to the variable delay unit so that the delay time of the clock signal of the analog-digital converter may be varied with time relative to the start signal for measurement.

摘要翻译： 传输测量系统包括用于传输测量的对象，用于响应于来自中央处理单元的用于测量的起始信号，输出包括关于要测量的传输时间的信息的输出信号。 模拟数字转换器将输出信号转换为数字数据。 中央处理单元处理数字数据以获得通过对象传播信号所需的传输时间。 时钟信号源向中央处理单元提供时钟信号，并且可变延迟单元插在时钟信号源和模数转换器之间。 中央处理单元向可变延迟单元传送延迟时间控制信号，使得模拟数字转换器的时钟信号的延迟时间可以相对于用于测量的起始信号随时间变化。

公开(公告)号：US4290312A

公开(公告)日：1981-09-22

申请号：US114413

申请日：1980-01-22

申请人： Tamotsu Kobayashi

发明人： Tamotsu Kobayashi

IPC分类号： G01F1/58

CPC分类号： G01F1/58

摘要： A signal generator for reducing the influence of fluctuations in flow rate distribution in a fluid passing through the flow tube of an electromagnetic flowmeter, which fluid intercepts a magnetic field therein to induce an emf which is transferred to the meter electrodes, thereby yielding a signal as a function of flow rate. To this end, the tube is provided with auxiliary electrodes disposed at arbitrary positions at which the potentials developed thereon are equal to each other when the existing flow rate distribution is symmetrical with respect to the flow tube axis, the auxiliary electrodes being interconnected.

摘要翻译： 一种信号发生器，用于减少通过电磁流量计的流量管的流体中的流量分布的波动的影响，该流体截流其中的磁场以引起传递到仪表电极的电动势，由此产生信号 流量函数。 为此，当设有现有的流量分布相对于流管轴线对称的辅助电极时，辅助电极设置在任意位置上，其上形成的电位彼此相等，辅助电极相互连接。

公开(公告)号：US4211971A

公开(公告)日：1980-07-08

申请号：US920180

申请日：1978-06-29

申请人： Tamotsu Kobayashi ,  Sadaki Igarashi

发明人： Tamotsu Kobayashi ,  Sadaki Igarashi

IPC分类号： G01D3/00 ,  G01D5/24 ,  G01R19/10 ,  G01R7/04 ,  G06G7/16

CPC分类号： G01D3/00 ,  G01D5/24 ,  G01R19/10

摘要： A ratio meter adapted to determine the ratio of a first input signal representing the difference between two input voltages and a second signal representing the sum of both input voltages.

摘要翻译： 一个比例计，适于确定表示两个输入电压之差的第一输入信号与表示两个输入电压之和的第二信号的比率。

公开(公告)号：US3979954A

公开(公告)日：1976-09-14

申请号：US596016

申请日：1975-07-15

申请人： Hirofumi Ide ,  Tamotsu Kobayashi

发明人： Hirofumi Ide ,  Tamotsu Kobayashi

IPC分类号： G01F1/32

CPC分类号： G01F1/3209

摘要： A Karman vortex flowmeter in which the fluid to be metered is conducted through a flow tube having a relatively large diameter. A multiplicity of rod-like units are arranged in parallel relation across the tube to define an obstacle array. Each unit acts as a vortex shedder and is constituted by rod sections which are coupled together axially by flow-detecting probes. Each probe in the array is so located as to avoid mutual interaction with the other probes. The electrical signals derived from the probes are so weighted and averaged as to obtain an output giving the mean flow rate. Even when the flowmeter is installed in a flow line containing elbows and other profile-disturbing elements, precise flow measurement can be accomplished.

摘要翻译： 卡门式涡街流量计，其中要计量的流体通过具有相对较大直径的流管传导。 多个棒状单元跨过管并列布置以限定障碍物阵列。 每个单元用作涡流脱落器，并且由通过流动探测探针轴向耦合在一起的杆部分构成。 阵列中的每个探针的位置都是为了避免与其他探针的相互作用。 从探头得到的电信号如此加权和平均，以获得给出平均流速的输出。 即使流量计安装在包含弯头和其他轮廓干扰元件的流路中，也可以进行精确的流量测量。

公开(公告)号：US06622572B2

公开(公告)日：2003-09-23

申请号：US10097128

申请日：2002-03-14

申请人： Tamotsu Kobayashi ,  Kunikazu Shigeta ,  Toru Fujii

发明人： Tamotsu Kobayashi ,  Kunikazu Shigeta ,  Toru Fujii

IPC分类号： G01F166

CPC分类号： G01F1/667

摘要： The amplifying gain is controlled by means of a data reduction equipment on the basis of the control signal input into the amplifier for amplifying the received signal propagated through the fluid and received in the ultrasonic transducer in the receiving side. The data reduction equipment includes an analog-digital converter, a processor, and a memory, wherein converted into digital data are waveform data including a peak value of each of the received signals, and the obtained digital data are stored in the memory. The processor screens the peak values stored in the memory to obtain a screened peak value achieved on the fluid including no impurities such as bubbles or solid particles, compares the obtained peak value with the preset peak value set preliminary on the processor, sends a control signal to the gain control terminal of the amplifier on the basis of the result of the comparison, and controls the peak value included in the output signal of the amplifier so as to take the substantially equal value as that of the preset value of the peak.

摘要翻译： 放大增益通过数据还原装置根据输入到放大器的控制信号进行控制，用于放大通过流体传播并接收在接收侧的超声换能器中的接收信号。 数据还原装置包括模拟数字转换器，处理器和存储器，其中转换成数字数据是包括每个接收信号的峰值的波形数据，并且所获得的数字数据被存储在存储器中。 处理器屏蔽存储在存储器中的峰值，以获得在流体上实现的筛选峰值，不包括诸如气泡或固体颗粒的杂质，将获得的峰值与在处理器上初步设置的预设峰值进行比较，发送控制信号 基于比较结果，将放大器的增益控制端子发送到放大器的增益控制端子，并且控制放大器的输出信号中包括的峰值，以获得与峰值的预设值基本相等的值。

公开(公告)号：US4773274A

公开(公告)日：1988-09-27

申请号：US019882

申请日：1987-02-27

申请人： Tamotsu Kobayashi ,  Kenichi Kuromori ,  Shigeru Goto ,  Yoshinori Matsunaga ,  Takashi Torimaru ,  Norihiro Shikuya ,  Tadashi Azegami

发明人： Tamotsu Kobayashi ,  Kenichi Kuromori ,  Shigeru Goto ,  Yoshinori Matsunaga ,  Takashi Torimaru ,  Norihiro Shikuya ,  Tadashi Azegami

IPC分类号： G01F1/60

CPC分类号： G01F1/60

摘要： An electromagnetic flow meter for measuring the flow rate of a fluid by applying to the fluid a magnetic field generated with an exciting current and measuring the resulting signal voltage generated at a pair of electrodes; wherein the exciting current comprises two frequency components which are lower and higher than the usual commercial frequency and the signal voltage comprises two frequencies which are discriminated so that a higher frequency is extracted as a first output and a lower frequency is extracted as a second output, through a low pass filter having a large time constant. A predetermined operation, such as addition, zero correction, response correction, etc, is carried out on the first and second outputs to produce a flow rate output. The invention has quick response, stable zero point and reduced susceptibility to noises.

摘要翻译： 一种电磁流量计，用于通过向流体施加用励磁电流产生的磁场并测量在一对电极处产生的所得到的信号电压来测量流体的流量; 其特征在于，所述励磁电流包括低于和高于通常的商用频率的两个频率分量，并且所述信号电压包括两个频率，所述两个频率被区分为使得较高频率被提取为第一输出，而较低频率被提取为第二输出， 通过具有大时间常数的低通滤波器。 在第一和第二输出端执行预定的操作，例如加法，零修正，响应校正等，以产生流量输出。 本发明响应快，零点稳定，噪声敏感度降低。

公开(公告)号：US3996797A

公开(公告)日：1976-12-14

申请号：US651525

申请日：1976-01-22

申请人： Takashi Torimaru ,  Kazuie Suzuki ,  Hiromu Kakiura ,  Tamotsu Kobayashi

发明人： Takashi Torimaru ,  Kazuie Suzuki ,  Hiromu Kakiura ,  Tamotsu Kobayashi

IPC分类号： G01F1/60

CPC分类号： G01F1/60

摘要： A magnetic flowmeter wherein liquid to be metered is conducted through a flow tube to intersect a transverse magnetic field established by an electromagnet. The voltage induced in the fluid is transferred to a pair of electrodes mounted at diametrically-opposed positions on the flow tube. The electromagnet is energized by a low-frequency wave which is produced by applying the output of a full-wave rectifier to the excitation coils of the electromagnet through a switching element. The switching element acts to chop the full-wave rectified output in accordance with high-frequency pulses whose frequency is higher than that of a commercial electric power line, the duty cycle thereof being modulated by a low-frequency, sinusoidal wave whose frequency is less than that of the commercial line.

摘要翻译： 一种磁流量计，其中待计量的液体通过流管传导以与由电磁体建立的横向磁场相交。 流体中感应的电压被传送到安装在流管上沿径向相对位置的一对电极。 电磁体通过通过将全波整流器的输出通过开关元件施加到电磁体的激励线圈而产生的低频波来激励。 开关元件用于根据频率高于商用电力线的高频脉冲来斩波全波整流输出，其占空比由频率较小的低频正弦波调制 比商业线。

公开(公告)号：US3218565A

公开(公告)日：1965-11-16

申请号：US13625261

申请日：1961-09-06

申请人： KIMISUKE SHIRAE ,  TAMOTSU KOBAYASHI ,  ISAO ABE

发明人： KIMISUKE SHIRAE ,  TAMOTSU KOBAYASHI ,  ISAO ABE

IPC分类号： G01D5/12 ,  G01D5/18 ,  G01K7/24 ,  G01L1/18 ,  G06G7/162

CPC分类号： G06G7/162 ,  G01D5/12 ,  G01D5/18 ,  G01K7/24 ,  G01L1/18

公开(公告)号：US20060145683A1

公开(公告)日：2006-07-06

申请号：US11318998

申请日：2005-12-27

申请人： Kunikazu Shigeta ,  Tamotsu Kobayashi

发明人： Kunikazu Shigeta ,  Tamotsu Kobayashi

IPC分类号： G01R23/175

CPC分类号： G01F1/667 ,  G04F10/10

摘要： To provide an industrially advantageous transmission measuring system of sufficiently high time resolution, i. e. the system that can make measurement in high accuracy without using expensive analog-digital converter. The transmission measuring system of the present invention comprises a subject for transmission measurement 1 for outputting in response to a signal 2 from the central processing unit 6 an output signal 3 including an information on the transmission time to be measured, an analog-digital converter 4 for converting the output signal into digital data, a central processing unit 6 for processing the digital data to obtain the transmission time required for propagating the signal through the subject, a clock signal source 7 for providing clock signal 8 to said central processing unit 6, and a variable delay unit 9 interposed between the clock signal source 7 and the analog-digital converter 4 wherein the central processing unit 6 delivers a delay time control signal 12 to the variable delay unit 9 so that the delay time of the clock signal of the analog-digital converter may be varied with time relative to the start signal for measurement 2.

摘要翻译： 为了提供足够高的时间分辨率的工业上有利的传输测量系统， e。 该系统可以在不使用昂贵的模拟数字转换器的情况下以高精度进行测量。 本发明的发送测量系统包括用于发送测量的对象1，用于响应于来自中央处理单元6的信号2输出包括关于要测量的发送时间的信息的输出信号3，模拟数字转换器4 用于将输出信号转换为数字数据的中央处理单元6，用于处理数字数据以获得通过对象传播信号所需的传输时间的中央处理单元6，用于向所述中央处理单元6提供时钟信号8的时钟信号源7， 以及插在时钟信号源7和模拟数字转换器4之间的可变延迟单元9，其中中央处理单元6将延迟时间控制信号12传送到可变延迟单元9，使得延迟时间 模拟数字转换器可以相对于测量开始信号2随时间而变化。

公开(公告)号：US06647805B2

公开(公告)日：2003-11-18

申请号：US09985449

申请日：2001-11-02

申请人： Tamotsu Kobayashi ,  Kunikazu Shigeta ,  Toru Fujii

发明人： Tamotsu Kobayashi ,  Kunikazu Shigeta ,  Toru Fujii

IPC分类号： G01F166

CPC分类号： G01F1/74 ,  G01F1/667

摘要： A transit-time difference type ultrasonic flowmeter comprises a pair of ultrasonic transducers mounted on a flow tube at an upstream side and a downstream side respectively, a switching device for switching the operational mode of each of the transducers alternatively to its transmitting or receiving mode, an amplifier for amplifying the signal received by the transducer of the receiving side, and a data reduction equipment includes an analog-digital converter and a digital signal processor; the converter converts the waveform into a plurality of voltage-time data sets; and the processor picks up an object peak of the voltage-time data sets on the basis of the time, or the data on the voltage, or determines the peaks of maximum voltage included within the waveform of the voltage-time data sets as an object peak, estimates at least one zero-cross point confined by the object peak or a peak adjacent to the object peak through the calculation made on the plurality of voltage-time data sets distributing along the time axis close to the zero-cross points, and finds the time required for propagating the wave from one zero-cross point or the average time required for propagating the wave from a plurality of zero-cross points.