中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

11 records (took 0.023 seconds)

    METHOD AND DEVICE FOR INDIRECT MEASUREMENT OF PHYSICAL SIGNAL
    1.
    发明专利
    METHOD AND DEVICE FOR INDIRECT MEASUREMENT OF PHYSICAL SIGNAL 失效

    公开(公告)号：JPH11264746A

    公开(公告)日：1999-09-28

    申请号：JP32088698

    申请日：1998-11-11

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CUCE ANTONINO ,  DI GUARDO MARIO

    IPC: G01D21/00 ,  A61B5/022 ,  A61B5/024 ,  G06F9/44 ,  G06F17/10 ,  G06N7/02

    Abstract: PROBLEM TO BE SOLVED: To provide an indirect measuring method of physical signal which is hard to be measured by direct method, and to ensure a reliable precise reading by measuring the value of a physical signal which is taken out from a physical signal to be monitored, and acting in the same manner as the physical signal to be monitored but having only a slight influence on the physical signal to be monitored. SOLUTION: Values of contraction stage, dilation stage and heart beat are judged. While air is slowly discharged from an armband through the pin of a secondary discharge block 9, a controller block 18 operates a first processor for executing a first rule set FUZZY1. Whether a heart beat is caused or not is transmitted by a signal. When the first heart beat is present, the control block 18 records the first pressure value corresponding to the value of the contraction stage pressure, and measure the heart beat. A value in an output converter block 7 is opened, and the armband is contracted at a high speed. When the value is closed, the first processor is operated again to detect the presence of heart beat. In the respective heart beats, the controller block 18 records the corresponding pressure values.

    2.
    发明专利
    未知

    公开(公告)号：DE69814426D1

    公开(公告)日：2003-06-12

    申请号：DE69814426

    申请日：1998-12-31

    Applicant: ST MICROELECTRONICS SRL

    Inventor： MILAZZOTTO ANTONINO ,  DI GUARDO MARIO ,  CUCUCCIO ANTONINO ,  NICOSIA NICOLA

    IPC: H02M5/293 ,  H02P25/10 ,  H02P7/638

    Abstract: The invention relates to a circuit device (1) for driving an A.C. electric load (M), which device is of the type incorporating a rectifying bridge (2) having a first input (A) connected to one terminal (H) of the electric load (M) and a second input (A') connected to an plug (5) of an A.C. mains supply, the rectifying bridge (2) having output terminals (B,B') connected to a power switch (3) which is controlled by an electric signal (PWM). The device comprises a first circuit loop-back path (7) connected in parallel to the electric load (M) and a second circuit loop-back path (8) connected in parallel to the electric load (M), the first (7) and second (8) paths being alternately activated by the positive and negative half-waves of the mains supply when the switch (3) is in its "off" state.

    6.
    发明专利
    未知

    公开(公告)号：DE69731206D1

    公开(公告)日：2004-11-18

    申请号：DE69731206

    申请日：1997-11-18

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CUCE ANTONINO ,  DI GUARDO MARIO

    IPC: G01D21/00 ,  A61B5/022 ,  A61B5/024 ,  G06F9/44 ,  G06F17/10 ,  G06N7/02 ,  G06F17/00 ,  A61B5/02

    Abstract: The invention relates to a method for an indirect measure, by the application of fuzzy logic rules, of a physical signal (G1) to be monitored which would be difficult to measure by a direct method and which has at least first (PD) and second (PS) significant values, these significant values (PD,PS) splitting said physical signal (G1) to be monitored time-wise into a first operational zone (Z1) corresponding to values below the first significant value (PD), a second operational zone (Z2) corresponding to values between the first (PD) and second (PS) significant values, and a third operational zone (Z3) corresponding to values above the second significant value (PS), only said second operational zone (Z2) being involved by the presence of a periodic index signal related to the physical signal (G1) to be monitored. The measuring method of this invention comprises the steps of: obtaining a derived physical signal (G2) from the physical signal (G1) to be monitored, this derived physical signal (G2) having a similar behavior as said physical signal (G1) to be monitored but trivial influence thereon and being related to said periodic index signal; measuring the value (P) of the derived physical signal (G2) and its variations over time at suitably selected check points (CP1,CP2,CP3,...,CPn); deriving the presence or absence of the periodic index signal by means of a first set (FUZZY1) of fuzzy rules; measuring the second (PS) and first (PD) significant values of the physical signal (G1) to be monitored as start and end values, respectively, of the second operational zone (Z2), namely as values which correspond to the start and end of the detection of the periodic index signal presence. The invention also relates to an apparatus for an indirect measure, by the application of fuzzy logic rules, of a physical signal (G1) to be monitored which would be difficult to measure by a direct method, of a type which comprises a compressor block (2) having a first input (3) connected to an input actuator block (5), a first output (4) connected to an output transducer block (7), and a second output (14) connected to a detector block (12), the input actuator block (5), output transducer block (7) and detector block (12) being connected to a fuzzy controller (24). The measuring apparatus of this invention further comprises a secondary exhaust block (9) connected to the compressor block (2) and effective to produce a derived physical signal (G2) behaving similar as the physical signal to be monitored (G1) but having a trivial influence thereon, and being related to the periodic index signal. The fuzzy controller (24) of the measuring apparatus according to the invention ultimately measures the first and second significant values (PD,PS) of the physical signal (G1) to be monitored by acting on the derived physical signal (G2). The indirect measuring method and apparatus of this invention can be applied in particular to the non-invasive reading of blood pressure and heart beat frequency.

    9.
    发明专利
    未知

    公开(公告)号：DE69619509D1

    公开(公告)日：2002-04-04

    申请号：DE69619509

    申请日：1996-07-24

    Applicant: ST MICROELECTRONICS SRL

    Inventor： DI GUARDO MARIO ,  D ANGELO GIUSEPPE ,  LO PRESTI MATTEO

    IPC: G06F7/68 ,  H02M7/5395 ,  H02P27/08 ,  H03K7/08 ,  H02M7/5387

    Abstract: In a fully digital PWM controller employing a sine-triangle modulating technique, the step of linearizing the dependence of the selected scanning frequency of the memory containing the digital samples of the modulating sinusoid, from the value of the digital selection datum, improves regulation at low speed by improving the resolution of selectable frequency values. The PWM driving signals produced by a fully digital controller implementing the linearization step of the invention show an F.F.T. extremely close to the F.F.T. of comparable PWM driving signals produced through a conventional analog technique.

Patent Agency Ranking