EP0825573B2 - Verfahren und Vorrichtung zur Auswertung eines Signals eines Bewegungsmelders - Google Patents
Verfahren und Vorrichtung zur Auswertung eines Signals eines Bewegungsmelders Download PDFInfo
- Publication number
- EP0825573B2 EP0825573B2 EP19960113304 EP96113304A EP0825573B2 EP 0825573 B2 EP0825573 B2 EP 0825573B2 EP 19960113304 EP19960113304 EP 19960113304 EP 96113304 A EP96113304 A EP 96113304A EP 0825573 B2 EP0825573 B2 EP 0825573B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- steepness
- motion detector
- detected
- evaluation device
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/20—Calibration, including self-calibrating arrangements
- G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
Definitions
- the invention relates to a method for evaluation of a signal of a motion detector. It further refers to an evaluation device to carry out the process.
- Under motion detector Here, in particular, a passive infrared motion detector or PIR motion detector Understood.
- a PIR motion detector usually becomes in hazard alarm technology and in control technology Detection of moving objects in the interior or outdoor space used. It is the one of a human body or from another source of heat emitted infrared radiation from an optics bundled and fed to a PIR sensor. A PIR motion detector is therefore for acquisition and evaluation designed for dynamic changes. In his Measuring range can be even the smallest Strahlfluß salungen or temporal changes of the temperature difference between the ambient temperature and the respective Surface temperature of the object is detected become.
- Document DE 4005 169 describes a PIR motion detector with a signal processing device.
- the invention is therefore based on the object a method and an apparatus for improved Evaluation of a signal of a motion detector specify, so that a particularly high immunity to interference and a particularly high stability, in particular against drafts, is reached.
- the invention is based on the consideration from that on the one hand movements as well as disturbances and unwanted influences in the surveillance area too different changes, and on the other hand these different changes from each other different signal curves or signal curves with different curve slopes or gradients have as a consequence. So is - e.g. conditioned by the thermal Inertia - the steepness of a due to a Draft triggered output signal relatively low, so that a draft a relatively small stiffness or slope is to be assigned. In contrast, one can electrical interference, such as a Burst or electrostatic contact discharge (ESD) with very high steepness, relatively large Slopes are assigned.
- ESD electrostatic contact discharge
- the instantaneous value becomes the steepness of the signal with a first upper one Limit value compared, z. B. for the evaluation as Draft. Is the absolute instantaneous value of the slope greater than this first upper limit, so will first determines the maximum value of the slope. Conveniently, then becomes this maximum value compared with a second lower limit, e.g. B. for evaluation as an electrical fault.
- the maximum value of the slope becomes advantageous the temporal course of the signal in terms of a Sign change of steepness or slope, i. in terms of reaching a minimum or maximum on the signal curve, checked.
- the advantages achieved by the invention are especially in that alone by a permanent Monitoring the steepness of the changes detected Conditional voltage or waveforms as a criterion for a signal evaluation a particularly high EMC immunity to electrical or electrostatic Disturbances and a particularly high stability against draft or the like at the same time particularly high overall sensitivity for to be detected Movements is achieved.
- An appropriate one PIR motion detector is therefore especially for the use in a so-called European installation bus (instabus-EIB).
- instabus-EIB European installation bus
- FIG. 1 schematically shows a region monitored by a motion detector 1, eg a PIR motion detector.
- the monitoring area or the measuring zone 2 is formed by way of example conical.
- An infrared radiation detected within the monitoring area 2 is focused onto a sensor 4 of the motion detector 1 via a ballast or radiation optics 3. Any change in the radiation incident causes the sensor 4 to change its.
- Output voltage U s which is further processed and evaluated in an evaluation device 5 of the motion detector 1.
- the evaluation device 5 comprises a preferably narrow-band signal amplifier 6 and a computer unit 7 in the form of a microprocessor.
- a signal input E n is amplified by the signal amplifier 6 output voltage U s as a voltage or output signal U A.
- the computer unit 7 has a number of signal outputs A 1 , A 2 , A n , to the display elements 8, 9 and 10 are connected.
- FIG. 2 shows a detail of a curve of a signal U A present at the signal input E n of the computer unit 7 in a U / t diagram.
- the evaluation of the signal U A in the computer unit 7 takes place essentially with regard to the slope or steepness S of the amplified voltage waveform of the signal U A.
- This variable voltage swing U h of the signal U A is determined by specifying a minimum voltage swing, which leads to an evaluation as motion, in the form of a specification constant U hm , with: U H ⁇ U Hm ,
- ISI is the absolute value of the instantaneous slope S, and where S L is a default constant, namely an upper limit of the slope S, e.g. B. for evaluation as a draft, is.
- the instantaneous or actual absolute value ISI of the steepness S is first read in and compared with the specification constant S L , wherein a time interval ⁇ t for measuring the steepness S is specified.
- the initial value U 0 of the voltage is stored. If the absolute value ISI of the slope is greater than the predetermined lower limit value S L (ISI> S L ), the provisional maximum S M of the slope S is stored. Otherwise, the previous loop will be run again. Under monitoring of the absolute value ISI, the inflection of the curve and thus the maximum steepness S in the curve are now searched within a time interval dt and stored as a new maximum S M.
- the maximum slope S M is greater than the specification constant S B , this is interpreted as an electrical disturbance (burst).
- burst an electrical disturbance
- the process of searching for the inflection of the curve is repeated until a sign change takes place - independently of a change from "+" to "-" or vice versa is.
- the process of finding the inflection of the curve is repeated until the maximum or minimum on the curve is reached and found.
- FIG. 4 shows two signal curves triggered by changes which are interpreted as valid, wherein section A represents a normal movement and section B represents a fast movement, in particular in the near zone.
- section A represents a normal movement
- section B represents a fast movement, in particular in the near zone.
- the rest position with U R and the range of variation of the voltage of the output of the amplifier 6 with U V are designated.
- S B >ISI> S L is satisfied.
- section C represents a typical breeze, with the relationship S L >ISI> 0.
- Section D represents a burst, where the relation ISI> S B holds.
- FIG 1 In a practical implementation was a Constructed circuit according to FIG 1, wherein as an amplifier 6 a narrow band amplifier with about 0.1 to 10 Hz and a gain of 10,000 and as Computing unit 7 is a microprocessor of the type 68HC805B6 were used.
- the microprocessor was in assembler according to the structogram programmed according to FIG. It also became an internal so-called watch-dog activated, whose by response Display 10 for "watch-dog was active" signaled Activity a malfunction of the microprocessor displays.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
- FIG 1
- schematisch ein Blockschaltbild eines Bewegungsmelders mit einer Auswertevorrichtung,
- FIG 2
- in einem Spannung/Zeit-Diagramm einen Signalverlauf zur Begriffsdefinition,
- FIG 3
- ein Flußdiagramm für die Arbeitsweise der Auswertevorrichtung, und
- FIG 4 und 5
- Signale von Bewegungsabläufen bzw. Störungen.
Claims (9)
- Verfahren zur Auswertung eines Signalverlaufs (UA(t)) eines Bewegungsmelders (1), insbesondere eines Passiven-Infrarot-Bewegungsmelders, wobei eine erfaßte Bewegung anhand der Steilheit (S) des erzeugten Signalverlaufs (UA (t)) ausgewertet wird,
wobei typishen Bewegungsabläufen ein bestimmter vorgebbarer Bereich der Steilheit (S) zugeordnet wird,
wobei dem Signalverlauf (UA(t)) ein Spannungshub (Uh) zugeordnet wird,
wobei als ein erstes Kriterium eine Abweichung des Momentanwertes (|S|) der Steilheit des Signalverlaufs (UA(t)) von einem unteren und einem oberen Grenzwert (Sβ oder SL ) der Steilheit (S) erfaßt wird, und bei dem als ein zweites Kriterium ein Überschreiten eines Minimalhubs (Uhm) des Signalverlaufs (UA(t)) vom aktuellen Spannungshub (Uh) erfaßt wird, wobei bei Erfüllung beider Kriterien die aktuell erfaßte Änderung als gültige Bewegung registriert wird. - Verfahren nach Anspruch 1, wobei der Momentanwert (|S|) der Steilheit (S) des Signals (UA) mit dem ersten oberen Grenzwert (SL) verglichen wird, und wobei der Maximalwert (SM) der Steilheit (S) des Signals (UA) mit dem zweiten unteren Grenzwert (SB) verglichen wird.
- Verfahren nach Anspruch 2, wobei zur Ermittlung des Maximalwertes (SM) der Steilheit (S) der zeitliche Verlauf des Signals (UA (t)) hinsichtlich einer Vorzeichenumkehr (VS) der Steilheit (S) überprüft wird.
- Auswertevorrichtung für ein von einem Sensor (4) eines Bewegungsmelders (1) erzeugtes Signal (US, UA), speziell angepaßt zur Durchführung des Verfahrens nach Anspruch 1 mit einer Rechnereinheit (7) mit einem Signaleingang (En) und mit mindestens einem Signalausgang (An), wobei anhand der ermittelten Steilheit (S) des Eingangssignals (UA) ein eine vom Sensor (4) erfaßte Änderung charakterisierendes Ausgangssignal erzeugt wird.
- Auswertevorrichtung nach Anspruch 4, mit einem der Rechnereinheit (7) vorgeschalteten Signalverstärker (6).
- Auswertevorrichtung nach Anspruch 4 oder 5, mit mindestens einem der Rechnereinheit (7) nachgeschalteten Anzeigeelement (8,9,10).
- Auswertevorrichtung nach einem der Ansprüche 4 bis 6, bei der als Rechnereinheit (7) ein Mikroprozessor vorgesehen ist.
- Bewegungsmelder, insbesondere Passiver-Infrarot-Bewegungsmelder, mit einer Auswertevorrichtung (5) nach einem der Ansprüche 4 bis 7.
- Bewegungsmelder nach Anspruch 8, dessen Sensor (4) zur Erzeugung eines Spannungssignals (US) aus einer Infrarotstrahlung ausgelegt ist.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19960113304 EP0825573B2 (de) | 1996-08-19 | 1996-08-19 | Verfahren und Vorrichtung zur Auswertung eines Signals eines Bewegungsmelders |
| DE59608506T DE59608506D1 (de) | 1996-08-19 | 1996-08-19 | Verfahren und Vorrichtung zur Auswertung eines Signals eines Bewegungsmelders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19960113304 EP0825573B2 (de) | 1996-08-19 | 1996-08-19 | Verfahren und Vorrichtung zur Auswertung eines Signals eines Bewegungsmelders |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0825573A1 EP0825573A1 (de) | 1998-02-25 |
| EP0825573B1 EP0825573B1 (de) | 2001-12-19 |
| EP0825573B2 true EP0825573B2 (de) | 2005-03-23 |
Family
ID=8223124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19960113304 Expired - Lifetime EP0825573B2 (de) | 1996-08-19 | 1996-08-19 | Verfahren und Vorrichtung zur Auswertung eines Signals eines Bewegungsmelders |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0825573B2 (de) |
| DE (1) | DE59608506D1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2103909C3 (de) * | 1970-02-06 | 1983-04-07 | Hörmann GmbH, 8000 München | Überwachungseinrichtung zur Feststellung eines Eindringlings, |
| EP0086369A1 (de) * | 1982-02-12 | 1983-08-24 | Cerberus Ag | Infrarot-Einbruchdetektor mit pyroelektrischem Strahlungsempfänger |
| DE3433087A1 (de) * | 1984-09-08 | 1986-03-20 | Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen | Signalauswerteschaltung fuer einen bewegungsmelder zur raumueberwachung |
| US4783592A (en) * | 1987-11-02 | 1988-11-08 | Santa Barbara Research Center | Real time adaptive round discrimination fire sensor |
| US5025378A (en) * | 1989-04-03 | 1991-06-18 | Honeywell Inc. | Horizontal stabilizer motion detector |
| DE4005169A1 (de) * | 1990-02-17 | 1991-08-22 | Bellmann B V | Bewegungsmelder |
| US5408420A (en) * | 1990-03-09 | 1995-04-18 | Emerson Electric Co. | Line leak test apparatus measuring rate of pressure change in a liquid storage and dispensing system |
-
1996
- 1996-08-19 EP EP19960113304 patent/EP0825573B2/de not_active Expired - Lifetime
- 1996-08-19 DE DE59608506T patent/DE59608506D1/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59608506D1 (de) | 2002-01-31 |
| EP0825573A1 (de) | 1998-02-25 |
| EP0825573B1 (de) | 2001-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1728224B1 (de) | Brandmelder mit mehreren untersuchungsvolumina | |
| DE69510252T2 (de) | Verfahren und Vorrichtung zur Gewinnung eines sich bewegenden Objektes, mit Anwendung von Hintergrundsubstraktion | |
| EP0345798B1 (de) | Brandmeldeanlage | |
| DE19934171B4 (de) | Filtersystem und -verfahren | |
| EP2407949B1 (de) | Ringförmige Hilfslichtquelle | |
| DE69425752T2 (de) | Kapazitiver detektor und alarmsystem | |
| DE10121693A1 (de) | Verfahren und Vorrichtung zum Detektieren des Kontakts von Händen mit dem Lenkrad | |
| DE2742389A1 (de) | Schaltungsanordnung fuer einen infrarot-eindringdetektor | |
| EP0248298A1 (de) | Gefahrenmeldeanlage | |
| EP3768558A2 (de) | Sensoranordnung für ein fahrzeug und verfahren zur überwachung eines sensors | |
| DE1907587A1 (de) | Verfahren und Vorrichtung zur Unterdrueckung von falschem Alarm in einem elektrischen Schutzsystem | |
| EP0825573B2 (de) | Verfahren und Vorrichtung zur Auswertung eines Signals eines Bewegungsmelders | |
| DE4319451C1 (de) | Aus einem Sender und einem Empfänger bestehende Einrichtung zum Erfassen von Gegenständen | |
| DE102018221448A1 (de) | Verfahren zur Bestimmung eines Sichtverhältnisses | |
| EP0250746B1 (de) | Passiver Infrarot-Bewegungsmelder | |
| DE8912983U1 (de) | Anordnung zur Raumüberwachung | |
| EP0849714B1 (de) | Verfahren zum Auswerten eines Signals eines Bewegungsmelders und Bewegungsmelder | |
| EP0646901B1 (de) | Verfahren zur Verarbeitung der Signale eines passiven Infrarot-Detektors und Infrarot-Detektor zur Durchführung des Verfahrens | |
| WO2009052991A1 (de) | Rauchmelder mit teilchenunterdrückung | |
| DE10024778A1 (de) | Bewegungsmelder | |
| EP2048636A1 (de) | Brandmelder | |
| DE69502502T2 (de) | Feueralarmvorrichtung mit analogem sensor | |
| DE19803641C2 (de) | Kapazitiver Sensor zur Detektion von Personen | |
| DE2937686A1 (de) | Kombinationsdetektor | |
| DE69510135T2 (de) | Alarmdetektionsvorrichtung mit Stromschleifen und Bake zur Lokalisierung von Waterzonen für eine solche Vorrichtung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19970703 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR LI |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;SI |
|
| AKX | Designation fees paid |
Free format text: CH DE FR LI |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): CH DE FR LI |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| 17Q | First examination report despatched |
Effective date: 20010601 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR LI |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: SIEMENS SCHWEIZ AG |
|
| REF | Corresponds to: |
Ref document number: 59608506 Country of ref document: DE Date of ref document: 20020131 |
|
| ET | Fr: translation filed | ||
| PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
| PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| 26 | Opposition filed |
Opponent name: ESSER EFFEFF ALARM GMBH Effective date: 20020913 |
|
| PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
| PLBC | Reply to examination report in opposition received |
Free format text: ORIGINAL CODE: EPIDOSNORE3 |
|
| PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
| R26 | Opposition filed (corrected) |
Opponent name: NOVAR GMBH Effective date: 20020913 |
|
| PUAH | Patent maintained in amended form |
Free format text: ORIGINAL CODE: 0009272 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT MAINTAINED AS AMENDED |
|
| 27A | Patent maintained in amended form |
Effective date: 20050323 |
|
| AK | Designated contracting states |
Kind code of ref document: B2 Designated state(s): CH DE FR LI |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: AEN Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20051021 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20051108 Year of fee payment: 10 |
|
| ET3 | Fr: translation filed ** decision concerning opposition | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070301 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20070831 Year of fee payment: 12 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20111125 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 |