GB2540687B - Digital filter - Google Patents

Digital filter

Info

Publication number
GB2540687B
GB2540687B GB1617771.9A GB201617771A GB2540687B GB 2540687 B GB2540687 B GB 2540687B GB 201617771 A GB201617771 A GB 201617771A GB 2540687 B GB2540687 B GB 2540687B
Authority
GB
United Kingdom
Prior art keywords
digital filter
digital
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB1617771.9A
Other versions
GB2540687A (en
GB201617771D0 (en
Inventor
Middleton Gregory
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deep Sea Electronics Ltd
Original Assignee
Deep Sea Electronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deep Sea Electronics Ltd filed Critical Deep Sea Electronics Ltd
Priority to GB1617771.9A priority Critical patent/GB2540687B/en
Priority claimed from GB1518820.4A external-priority patent/GB2534000B/en
Publication of GB201617771D0 publication Critical patent/GB201617771D0/en
Publication of GB2540687A publication Critical patent/GB2540687A/en
Application granted granted Critical
Publication of GB2540687B publication Critical patent/GB2540687B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G01R13/0218—Circuits therefor
    • G01R13/0254—Circuits therefor for triggering, synchronisation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G01R13/0218—Circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/02—Measuring effective values, i.e. root-mean-square values

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
GB1617771.9A 2014-07-30 2014-07-30 Digital filter Active GB2540687B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1617771.9A GB2540687B (en) 2014-07-30 2014-07-30 Digital filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1617771.9A GB2540687B (en) 2014-07-30 2014-07-30 Digital filter
GB1518820.4A GB2534000B (en) 2014-07-30 2014-07-30 Digital filter

Publications (3)

Publication Number Publication Date
GB201617771D0 GB201617771D0 (en) 2016-12-07
GB2540687A GB2540687A (en) 2017-01-25
GB2540687B true GB2540687B (en) 2017-09-13

Family

ID=57614574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1617771.9A Active GB2540687B (en) 2014-07-30 2014-07-30 Digital filter

Country Status (1)

Country Link
GB (1) GB2540687B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11057973B2 (en) 2017-08-24 2021-07-06 Signify Holding B.V. Retrofit LED lighting device having improved timing event detection for increasing stable driver operation without light flicker
CN109116107A (en) * 2018-08-21 2019-01-01 山东中创软件商用中间件股份有限公司 A kind of digital frequency meter
CN110376425B (en) * 2019-06-26 2021-09-14 杭州电子科技大学 Three-phase input signal zero detection circuit
CN110414619B (en) * 2019-08-05 2023-04-07 重庆工商职业学院 EMG signal identification method
GB2603110B (en) * 2021-01-06 2023-09-27 Cloudfm Integrated Services Ltd Monitoring electrical parameters

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638001A (en) * 1970-03-04 1972-01-25 Hewlett Packard Co Method and apparatus for averaging the digital display for a fluctuating digital measurement and improving the resolution of the measurement
US20120112770A1 (en) * 2008-10-21 2012-05-10 Harald Philipp Signal Processing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638001A (en) * 1970-03-04 1972-01-25 Hewlett Packard Co Method and apparatus for averaging the digital display for a fluctuating digital measurement and improving the resolution of the measurement
US20120112770A1 (en) * 2008-10-21 2012-05-10 Harald Philipp Signal Processing

Also Published As

Publication number Publication date
GB2540687A (en) 2017-01-25
GB201617771D0 (en) 2016-12-07

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