| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Verfahren und Vorrichtung zur Identifizierung eines sinusförmigen Impulssignals | EP90121971.7 | 1990-11-16 | EP0429991B1 | 1995-07-12 | Tschirk, Wolfgang |
| 42 | A method and an apparatus for detecting a frequency of a power system | EP94104721.9 | 1994-03-24 | EP0617291A1 | 1994-09-28 | Kurosawa, Yasuhiro, c/o Intellectual Property Div. |
A frequency detecting method for detecting a frequency of an AC electric parameter of an electric power system (1). The frequency detecting method comprises a sampling step of sampling the AC electric parameter of the electric power system (1) at a predetermined sampling period, an adding step of adding a sampling value vm sampled at a sampling time m and a sampling value vm-n sampled at a sampling time (m-n), thereby obtaining a sum wm of the sampling values, a first RMS value calculating step of calculating a first electric parameter E1 corresponding to a RMS value of the sum wm, a second RMS value calculating step of calculating a second electric parameter E2 corresponding to a RMS value of a time-differential value um of the sum m, a dividing step of dividing the second electric parameter E2 by the first electric parameter E1, and a frequency detecting step of detecting the frequency of the AC electric parameter from a division result (E2/E1). |
||||||
| 43 | Block averaging of time varying signal attribute measurements | EP90113952.7 | 1990-07-20 | EP0418498A3 | 1991-05-15 | Nichols, Douglas C.; Stephson, Paul S.; Schmitz, John S. |
A method for block averaging data from dynamic, repeating input signals, for example frequency modulated signals, takes into account the time variability of the measurement sampling. Each block of data is referenced to a synchronizing stimulus, and measurements are averaged both on the time axis and on the modulation axis. On the time axis, the time alignment for each individual measurement is placed at the center of the time interval during which the measurement was made. For each block of data acquired, the measurements blocks are averaged together in both dimensions, time (x-axis) and modulation (y-axis result being computed), using a stimulus synchronizing signal provided by the user as a time reference (time=0). The stimulus synchronizing signal should be a stable reference with respect to the modulation function being measured. For example, if frequency vs. time is being measured, the reference should identify a repeating frequency reference. The times from the stimulus synchronizing reference to the input signal events are measured and accounted for in the averaging method of the invention. |
||||||
| 44 | Block averaging of time varying signal attribute measurements | EP90113952.7 | 1990-07-20 | EP0418498A2 | 1991-03-27 | Nichols, Douglas C.; Stephson, Paul S.; Schmitz, John S. |
A method for block averaging data from dynamic, repeating input signals, for example frequency modulated signals, takes into account the time variability of the measurement sampling. Each block of data is referenced to a synchronizing stimulus, and measurements are averaged both on the time axis and on the modulation axis. On the time axis, the time alignment for each individual measurement is placed at the center of the time interval during which the measurement was made. For each block of data acquired, the measurements blocks are averaged together in both dimensions, time (x-axis) and modulation (y-axis result being computed), using a stimulus synchronizing signal provided by the user as a time reference (time=0). The stimulus synchronizing signal should be a stable reference with respect to the modulation function being measured. For example, if frequency vs. time is being measured, the reference should identify a repeating frequency reference. The times from the stimulus synchronizing reference to the input signal events are measured and accounted for in the averaging method of the invention. |
||||||
| 45 | MODULATION DETECTOR AND CLASSIFIER | EP84901527.6 | 1984-03-16 | EP0140925B1 | 1991-02-27 | READY, Patrick, J.; ANDERSON, Douglas, R. |
| A signal detector and classifier for signals having inherent event periodicity such as digital modulations. Basically, the invention involves passing a band of frequencies through a plurality of paths of different or variable delay (D1-DM, Figs. 2-5), combining pairs of bands having different delay (62a-62m, Figs. 2-5). Fourier transforming or filtering the results of the combining to produce signals having magnitudes and phases related to received signal content (63, Fig. 2-5). Frequency, symbol rate, and symbol phase are determined (200, 120, 25, 25L, 25Q, 25H, 25N, Fig. 1). Similar stages may be cascaded to detect higher orders of modulation (stages 2, 3, N, Fig. 1). The invention also detects hybrid modulation (25h, Figs. 1 and 9). Interstate filtering of decreasing bandwidth enhances the performance of this invention. Novel ambiguity transform cicuits are disclosed in Figs. 2, 3, 4 and 5. | ||||||
| 46 | Exponential decay time constant measurement using frequency of offset-phase locked loop: system and method | EP88304136.0 | 1988-05-06 | EP0294938A2 | 1988-12-14 | Dukes, John Noland; Carlsen, William F.,Jr.; Pittaro, Richard J. |
Oxygen determination based on luminescence quenching of fluorescent dye is effected by using the frequency output of an offset-phase locked loop (15) to calculate the time constant for the exponential decay of fluorescence. An offset phase angle between a periodic stimulus signal used to excite the dye and a response signal based on fluorescence detection is predetermined to optimize signal-to-noise ration for a wide range of time constants. An offset-phase locked loop (15) is used to vary the frequency of a periodic stimulus signal until the predetermined phase relationship is established, and the frequency forms a measure of the decay rate. Where the stimulus and response signals are substantially sinusoidal, the offset phase angle is ideally about 49.3°, although substantially optimal performance is achieved using a more conveniently generated 45°. The 45° angle offset can also be used with a square-wave stimulus signal. |
||||||
| 47 | Frequency counter in particular for counting partly varying frequencies in real time | EP88400633.9 | 1988-03-16 | EP0284498A1 | 1988-09-28 | Abe, Yoshitaka; Murakami, Keiichi |
A signal frequency, particularly a signal frequency partly varied as a function of time is counted in real time by means of a counter having : a delay circuit (7) for delaying the signal by a predetermined time; a first detector (21) for detecting delayed zero-crossing pulses from the delayed signal; a second detector (22) for detecting zero-crossing pulses from the non-delayed signal; and means (9) for counting a first number equal to the number of delayed zero-crossing pulses after the predetermined time is over, and a second number equal to the number of zero-crossing pulses during and after said predetermined time, and producing a number difference by subtracting the first number from the second number. The predetermined time is selected to be longer than a half period of the signal frequency to be counted. |
||||||
| 48 | MODULATION DETECTOR AND CLASSIFIER. | EP84901527 | 1984-03-16 | EP0140925A4 | 1986-04-15 | READY PATRICK J; ANDERSON DOUGLAS R |
| 49 | Verfahren und Vorrichtung zur rauscharmen Frequenzmessung bei einer mehrphasigen elektrischen Leistungsübertragung | EP84100678.6 | 1984-01-23 | EP0117421B1 | 1986-04-09 | Hosemann, Gerhard, Prof., Dr.-Ing. |
| 50 | Verfahren und Schaltung zum Messen der Frequenz einer elektrischen Wechselgrösse | EP82103953.4 | 1982-05-06 | EP0065683B1 | 1986-02-12 | Kaufhold, Wolfgang, Dipl.-Ing. |
| 51 | Vorrichtung zum Bestimmen der gemeinsamen Frequenz zweier unabhängig veränderlicher Wechselgrössen, insbesondere bei einer Drehfeldmaschine | EP83100361.1 | 1983-01-17 | EP0085338B1 | 1985-07-10 | Reng, Leonhard, Dipl.-Ing. |
| 52 | Method and device for measurement of the rate of change of frequency of a pulse train | EP80300534.7 | 1980-02-25 | EP0021554A2 | 1981-01-07 | Woodhouse, Richard Graham; Salway, Peter Hugh |
A device for measuring the rate of change of a pulse train from a transducer (12) includes first counting means (18, 22) which counts the number of pulses in a first fixed frequency to pulse train during each interval between the signal pulses. A divider (28) receives the count generate in the preceding interval and divides the frequency f1 of a second fixed frequency pulse train by this number. The divider pulse train is counted by a second counting means (30) for the duration of each interval. |
||||||
| 53 | Oscillation circuit, integrated circuit and abnormality detection method | JP2012039270 | 2012-02-24 | JP2013175056A | 2013-09-05 | YOSHIMURA KATSUTOSHI; INOUE KAZUTOSHI |
| PROBLEM TO BE SOLVED: To enable abnormality detection even when a sub-oscillation circuit stops and also achieve the miniaturization of an oscillation circuit itself .SOLUTION: In a period predetermined in accordance with the oscillation frequency of a sub-oscillation circuit 50, the lower limit value and upper limit value of the number of high speed clocks of a main oscillation circuit 30 are preliminarily stored in a lower limit value register 40 and an upper limit value register 44. In a first abnormality detection part 22, high speed clocks are counted by a counter 32 in a period corresponding to a high speed clock and a low speed clock, and the count value is compared with the upper limit value by a comparator 42, and when the count value exceeds the upper limit value, abnormality is detected, and the output value of a register 36 corresponding to the count value is compared with the lower limit value by a comparator 38, and when the output value is less than the lower limit value, abnormality is detected. In a second abnormality detection part 24, when the respective bits of the output value of a shift register 54 which has fetched a frequency-division clock obtained by frequency-dividing the high speed clock by a frequency-divider 52 in a timing corresponding to the low speed clock are all the same value, abnormality is detected by an oscillation confirmation circuit 56. | ||||||
| 54 | Automatic analysis device | JP2009199054 | 2009-08-28 | JP2011047911A | 2011-03-10 | MIZUMOTO TORU; TATSUYA HIROMOTO |
| PROBLEM TO BE SOLVED: To solve the problem in an automatic analysis device for analyzing particle components contained in a specimen sampled from a person to be inspected, wherein it has been difficult to detect abnormal conditions of a section that does not perform operation such as movement and opening and closing. SOLUTION: The automatic analysis device for analyzing a particle component contained in a specimen sampled from a person to be inspected includes a measurement section for measuring a specimen and acquiring measurement data, a controller for analyzing measurement data acquired by the measurement section and acquiring the analysis results of particle components contained in the specimen, and an information means for informing predetermined information, in which the controller controls the informing means so as to inform the abnormal condition indication of the measurement section, based on the acquisition frequency of the analysis results containing information related to the abnormal conditions of predetermined particle components. COPYRIGHT: (C)2011,JPO&INPIT | ||||||
| 55 | Periodic signal identification adaptive circuit | JP26965990 | 1990-10-09 | JP3124542B2 | 2001-01-15 | ムト マチアス |
| 56 | Frequency detection system | JP9077693 | 1993-03-25 | JP3119541B2 | 2000-12-25 | 保広 黒沢 |
| 57 | Frequency detection circuit | JP16482792 | 1992-06-23 | JP2778874B2 | 1998-07-23 | IDETA HIROSHI |
| 58 | Measuring apparatus and method of the value associated with the time constant | JP10979588 | 1988-05-02 | JP2645270B2 | 1997-08-25 | JON ENU DEYUUKUSU; UIRIAMU EFU KAARUSEN JUNIA; RICHAADO JEI PITARO |
| Oxygen determination based on luminescence quenching of fluorescent dye is effected by using the frequency output of an offset-phase locked loop (15) to calculate the time constant for the exponential decay of fluorescence. An offset phase angle between a periodic stimulus signal used to excite the dye and a response signal based on fluorescence detection is predetermined to optimize signal-to-noise ration for a wide range of time constants. An offset-phase locked loop (15) is used to vary the frequency of a periodic stimulus signal until the predetermined phase relationship is established, and the frequency forms a measure of the decay rate. Where the stimulus and response signals are substantially sinusoidal, the offset phase angle is ideally about 49.3 DEG , although substantially optimal performance is achieved using a more conveniently generated 45 DEG . The 45 DEG angle offset can also be used with a square-wave stimulus signal. | ||||||
| 59 | Method and apparatus for identifying computer network signals | JP51343594 | 1993-11-30 | JPH08503776A | 1996-04-23 | クランズラー，デイビッド・アンドリュー |
| (57)【要約】 デジタル周波数識別回路は、送信信号（ＲＤ＋、ＲＤ−）を受取るように結合され、エッジ検出信号（１７１）を生成するためのエッジ検出器（１７０）と、クロック信号（１６０）によってクロックされかつエッジ検出信号をデータ入力として有するシフトレジスタ、およびエッジ検出入力として結合され、エッジ検出入力のどれがエッジ検出を表わすかどうかを示すタイムアウト信号（１８１）を決定しかつ与えるための複数のビットのシフトレジスタを有するタイムアウト決定サブ回路を含むエッジタイマ（１８０）と、クロック信号、エッジ検出信号、およびタイムアウト信号を受取るように結合され、送信信号が周波数識別要件に従うかどうかを示すアンスケルチ信号（１５０）を生成するための状態マシン回路（１９０）とを含む。 | ||||||
| 60 | Frequency detection system | JP9077693 | 1993-03-25 | JPH06281679A | 1994-10-07 | KUROSAWA YASUHIRO |
| PURPOSE: To enable highly-precise calculation of the frequency of the quantity of AC electricity of a power system by a method wherein a quantity being proportional to an effective value of the time differential quantity of the quantity of electricity is divided by a quantity being proportional to the effective value of the sum of time-series sampling values of the same quantity of electricity. CONSTITUTION: The quantities V m and V m-n of a power system at sampling times (m) ((m) is in a time series) and m-n are determined. In a first means 1, a quantity W 2 mk-W.W m-2k ((k)is an integer showing an arbitrary sampling time) being proportional to an effective value of the sum W m=V m+V m-n of the quantities of electricity V m and V m-n is calculated, while in a second means 2, a quantity U 2 m-k-U m.U m-2k being proportional to the effective value of a time differential quantity U=Σk p (V m+1-V m-1-n) of the sum W m of the quantity of AC electricity is calculated. A third means 3 calculates the quantity of electricity being proportional to a frequency by dividing the value obtained by the second means 2 by the value obtained by the first means and detects the frequency from this quantity of electricity. COPYRIGHT: (C)1994,JPO | ||||||
