FR2449286A1 - Circuit discriminateur de frequence et procede d'utilisation - Google Patents
Circuit discriminateur de frequence et procede d'utilisationInfo
- Publication number
- FR2449286A1 FR2449286A1 FR8003441A FR8003441A FR2449286A1 FR 2449286 A1 FR2449286 A1 FR 2449286A1 FR 8003441 A FR8003441 A FR 8003441A FR 8003441 A FR8003441 A FR 8003441A FR 2449286 A1 FR2449286 A1 FR 2449286A1
- Authority
- FR
- France
- Prior art keywords
- signal
- frequency
- signal received
- sensitive
- determining
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/0205—Circuit arrangements for generating control signals using an auxiliary engine speed control
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds
- G01P3/60—Devices characterised by the use of electric or magnetic means for comparing two speeds by measuring or comparing frequency of generated currents or voltages
-
- 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
- G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude 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
- G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Measurement Of Current Or Voltage (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Manipulation Of Pulses (AREA)
Abstract
L'INVENTION CONCERNE UN CIRCUIT DISCRIMINATEUR DE FREQUENCE. SELON L'INVENTION, IL COMPREND UN PREMIER MOYEN GENERATEUR DE SIGNAUX 1 SENSIBLE A UN SIGNAL IMPULSIONNEL RECU ET EMETTANT UN PREMIER SIGNAL DONT LES CRETES VARIENT EN REPONSE A LA FREQUENCE DU SIGNAL RECU ET DONT LES TROUS SONT SENSIBLEMENT CONSTANTS, UN SECOND MOYEN GENERATEUR DE SIGNAUX 11, SENSIBLE AU SIGNAL IMPULSIONNEL RECU ET EMETTANT UN SECOND SIGNAL DONT LES TROUS VARIENT EN REPONSE A LA FREQUENCE DU SIGNAL RECU; ET UN MOYEN DISCRIMINATEUR 2, 11, 14, 15 SENSIBLE AUX PREMIER ET SECOND SIGNAUX ET DETERMINANT UNE DIMINUTION DE FREQUENCE DU SIGNAL RECU AU-DELA D'UNE FREQUENCE PREDETERMINEE EN DETECTANT UNE CRETE DU PREMIER SIGNAL AU-DESSUS D'UN PREMIER NIVEAU ET DETERMINANT UNE AUGMENTATION DE FREQUENCE DANS LE SIGNAL RECU AU-DELA DE LA FREQUENCE PREDETERMINEE EN DETECTANT UN TROU DANS LE SECOND SIGNAL EN DESSOUS D'UN SECOND NIVEAU. L'INVENTION S'APPLIQUE NOTAMMENT A LA DETERMINATION DE LA VITESSE DE ROTATION D'UN MOTEUR AUTOMOBILE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1599679A JPS55109968A (en) | 1979-02-16 | 1979-02-16 | Frequency decision circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2449286A1 true FR2449286A1 (fr) | 1980-09-12 |
FR2449286B1 FR2449286B1 (fr) | 1984-03-16 |
Family
ID=11904247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8003441A Granted FR2449286A1 (fr) | 1979-02-16 | 1980-02-15 | Circuit discriminateur de frequence et procede d'utilisation |
Country Status (5)
Country | Link |
---|---|
US (1) | US4322642A (fr) |
JP (1) | JPS55109968A (fr) |
DE (1) | DE3005713C2 (fr) |
FR (1) | FR2449286A1 (fr) |
GB (1) | GB2045558B (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2596871A1 (fr) * | 1986-03-29 | 1987-10-09 | Fichtel & Sachs Ag | Commutateur de frequence |
EP0350184A2 (fr) * | 1988-07-05 | 1990-01-10 | International Business Machines Corporation | Circuit détecteur d'interruption de train d'impulsions |
EP0872739A2 (fr) * | 1997-04-16 | 1998-10-21 | Nec Corporation | Circuit de détection de fréquence |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037815A (ja) * | 1983-08-09 | 1985-02-27 | Nec Corp | クロツク検出回路 |
US4633097A (en) * | 1983-11-17 | 1986-12-30 | Motorola, Inc. | Clock monitor circuit and method |
JPS6450611A (en) * | 1987-08-21 | 1989-02-27 | Nec Corp | Phase shifter |
US4912419A (en) * | 1988-12-19 | 1990-03-27 | Ford Motor Company | Signal conditioning circuit and method |
JP2635778B2 (ja) * | 1989-09-21 | 1997-07-30 | 株式会社東芝 | パルス回路 |
JPH0632632U (ja) * | 1992-10-07 | 1994-04-28 | 株式会社サンゴ | 支柱不要のメッシュフェンス |
DE4325680A1 (de) * | 1993-07-30 | 1995-02-02 | Acer Peripherals Inc | Vorrichtung zum Detektieren einer Signalfrequenz und Steuern einer Anzeigevorrichtung |
US5546025A (en) * | 1994-03-11 | 1996-08-13 | Mitel, Inc. | Low frequency discrimator using upper and lower thresholds |
WO2004075469A2 (fr) * | 2003-02-19 | 2004-09-02 | Dotcast Inc. | Commande adaptative commune de l'egalisation, de la synchronisation et du gain dans un recepteur de communication numerique |
CN102520244A (zh) * | 2011-12-21 | 2012-06-27 | 山河智能装备股份有限公司 | 一种频率信号检测电路 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1294999B (de) * | 1968-03-01 | 1969-05-14 | Ibm Deutschland | Impulsfolgefrequenz-Diskriminator |
FR2244177A1 (fr) * | 1973-09-17 | 1975-04-11 | Buck Robert | |
DE2350514A1 (de) * | 1973-10-09 | 1975-04-30 | Endress Hauser Gmbh Co | Schaltungsanordnung zur anzeige von frequenzaenderungen einer wechselspannung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1541895A1 (de) * | 1965-11-15 | 1969-11-06 | Westland Aircraft Ltd | Frequenzbestimmung auf elektronischem Wege |
ES357297A1 (es) * | 1967-08-17 | 1970-03-01 | Standard Electrica Sa | Detector de tono. |
US3585400A (en) * | 1968-12-12 | 1971-06-15 | Gosh Instr Inc | Electrical frequency detecting device and method |
US3594588A (en) * | 1969-04-01 | 1971-07-20 | Motorola Inc | Frequency detection system |
US3497816A (en) * | 1969-04-16 | 1970-02-24 | American Mach & Foundry | Frequency sensor and control circuit |
US4217506A (en) * | 1978-05-17 | 1980-08-12 | Northern Telecom, Inc. | Level selective a-c monitoring circuit |
-
1979
- 1979-02-16 JP JP1599679A patent/JPS55109968A/ja active Pending
-
1980
- 1980-02-11 US US06/120,097 patent/US4322642A/en not_active Expired - Lifetime
- 1980-02-15 GB GB8005225A patent/GB2045558B/en not_active Expired
- 1980-02-15 DE DE3005713A patent/DE3005713C2/de not_active Expired
- 1980-02-15 FR FR8003441A patent/FR2449286A1/fr active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1294999B (de) * | 1968-03-01 | 1969-05-14 | Ibm Deutschland | Impulsfolgefrequenz-Diskriminator |
FR2244177A1 (fr) * | 1973-09-17 | 1975-04-11 | Buck Robert | |
DE2350514A1 (de) * | 1973-10-09 | 1975-04-30 | Endress Hauser Gmbh Co | Schaltungsanordnung zur anzeige von frequenzaenderungen einer wechselspannung |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2596871A1 (fr) * | 1986-03-29 | 1987-10-09 | Fichtel & Sachs Ag | Commutateur de frequence |
EP0350184A2 (fr) * | 1988-07-05 | 1990-01-10 | International Business Machines Corporation | Circuit détecteur d'interruption de train d'impulsions |
EP0350184A3 (fr) * | 1988-07-05 | 1990-12-05 | International Business Machines Corporation | Circuit détecteur d'interruption de train d'impulsions |
EP0872739A2 (fr) * | 1997-04-16 | 1998-10-21 | Nec Corporation | Circuit de détection de fréquence |
EP0872739A3 (fr) * | 1997-04-16 | 1999-05-06 | Nec Corporation | Circuit de détection de fréquence |
US6043749A (en) * | 1997-04-16 | 2000-03-28 | Nec Corporation | Frequency detection circuit |
Also Published As
Publication number | Publication date |
---|---|
GB2045558B (en) | 1983-05-11 |
DE3005713C2 (de) | 1986-03-27 |
DE3005713A1 (de) | 1980-09-04 |
JPS55109968A (en) | 1980-08-23 |
FR2449286B1 (fr) | 1984-03-16 |
US4322642A (en) | 1982-03-30 |
GB2045558A (en) | 1980-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |