US5099694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration detecting apparatus
Assignee: Canon Inc
•
Filing: 1988-05-18
•
Granted: 1992-03-31
•
Expires: 2008-05-18
Abstract
Abstract The present invention discloses a vibration detecting apparatus for obtaining a signal indicating the speed or displacement of an object by integrating a signal generated by an acceleration meter or a speed-meter, equipped with an integrator with a variable lower limit frequency of the integrable frequency range or bandwidth, and a control unit for varying the lower limit frequency of the integrator according to a predetermined method in response to the input and/or output of the integrator.
Inventors
- 👤 Hiroshi Sumio
- 👤 Toru Nagata
- 👤 Koichi Washisu
- 👤 Masao Shikaumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:51
CPC Classifications
G; G01; G01P; G01P7/00; G03; G03B; G03B17/00; H; H04; H04N; H04N23/00; H04N23/60; H04N23/68; H04N23/681; H04N23/6812; H04N23/682; H04N23/685; H04N23/687; G03B2217/00; G03B2217/005
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
108 words
An apparatus for producing an output signal representative of the vibration state of an object, comprising: integration means for producing the output signal by integrating over an integrable frequency range a signal that represents the vibration state of the object, said integration means having varying means for varying a lower limit of the integrable frequency range within a first frequency range, wherein the integrating characteristic of said integration means is maintained constant in the portion of the integrable frequency range that exceeds said lower limit of the integrable frequency range; and control means for controlling said varying means in response to the output signal from said integration means.
Claim 2
Independent Claim
108 words
An apparatus for producing an output signal representative of the vibration state of an object, comprising: integration means for producing the output signal by integrating over an integrable frequency range a signal that represents the vibration state of the object, said integration means having varying means for varying a lower limit of the integrable frequency range within a first frequency range, wherein the integrating characteristic of said integration means is maintained constant in the portion of the integrable frequency range that exceeds said lower limit of the integrable frequency range; and control means for controlling said varying means in response to the output signal from said integration means.
Claim 3
Dependent Claim
25 words
An apparatus according to claim 1, wherein said control means includes a window comparator operating in response to the output signal from said integration means.
Claim 4
Dependent Claim
26 words
An apparatus according to claim 1, wherein said control means includes a differential window comparator operating in response to the output signal from said integration means.
Claim 5
Dependent Claim
115 words
An apparatus according to claim 1, further comprising: second integration means for producing a second output signal representative of the vibration state of the object by integrating over a second integrable frequency range the output signal from said integration means, said second integration means having second varying means for varying the lower limit of the integrable frequency range within a second frequency range, wherein the integrating characteristic of said second integration means is maintained constant in the portion of the integrable frequency range that exceeds said lower limit of the integrable frequency range; and second control means for controlling said second varying means in response to the second output signal from said second integration means.
Claim 6
Dependent Claim
18 words
An apparatus according to claim 4, wherein said second control means includes means for controlling said varying means.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 1, wherein said control means operates said varying means when the output signal level of said integration means becomes greater than a predetermined range.
Claim 8
Dependent Claim
37 words
An apparatus according to claim 1, wherein said control means controls said varying means so that said lower limit shifts to a higher frequency when the amplitude of the output signal of said integration means is increasing.
Claim 9
Dependent Claim
39 words
An apparatus according to claim 7, wherein said control means controls said varying means so that the lower limit continuously changes to a higher frequency when the amplitude of the output signal from said integration means is continuously increasing.
Claim 10
Dependent Claim
34 words
An apparatus according to claim 1, wherein said control means controls said varying means so that said lower limit gradually varies when the amplitude of the output signal from said integration means gradually varies.
Claim 11
Dependent Claim
28 words
An apparatus according to claim 4, further comprising third control means for controlling said varying means in response to the second output signal from said second integration means.
Claim 12
Dependent Claim
26 words
An apparatus according to claim 1, wherein said control means also is responsive to another integration means connected serially to the output of said integration means.
Claim 13
Dependent Claim
42 words
An apparatus according to claim 1, wherein said control means includes absolute value responding means and wherein said control means controls said varying means in response to the absolute value of a signal functionally related to the output of said integration means.
Claim 14
Dependent Claim
33 words
An apparatus according to claim 1, wherein said control means controls said varying means according to a pulse signal whose duty ratio varies in accordance with desired output characteristics of said integration means.
References Cited (Backward Citations)
US3515881A
Cited
US3702394A
Cited
US3979090A
Cited
US3978416A
Cited
US4114117A
Cited
US4306191A
Cited
GB2116397A
Cited
US4738264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |