ITBA20090007A1 - CAPACITIVE SENSOR OF PRESENCE FOR ANTI-INTRUSION AND COMMAND - Google Patents

CAPACITIVE SENSOR OF PRESENCE FOR ANTI-INTRUSION AND COMMAND Download PDF

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Publication number
ITBA20090007A1
ITBA20090007A1 IT000007A ITBA20090007A ITBA20090007A1 IT BA20090007 A1 ITBA20090007 A1 IT BA20090007A1 IT 000007 A IT000007 A IT 000007A IT BA20090007 A ITBA20090007 A IT BA20090007A IT BA20090007 A1 ITBA20090007 A1 IT BA20090007A1
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IT
Italy
Prior art keywords
capacitive
sensor
signal
alarm
tiles
Prior art date
Application number
IT000007A
Other languages
Italian (it)
Inventor
Rocco Carone
Michele Deligio
Original Assignee
Rocco Carone
Deligio Miclele
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 Rocco Carone, Deligio Miclele filed Critical Rocco Carone
Priority to IT000007A priority Critical patent/ITBA20090007A1/en
Publication of ITBA20090007A1 publication Critical patent/ITBA20090007A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G01D5/2405—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by varying dielectric
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector

Description

DESCRIZIONE DESCRIPTION

Dell’Invenzione Industriale dal Titolo: Of the Industrial Invention entitled:

SENSORE CAPACITIVO DI PRESENZA PER ANTINTRUSIONE E COMANDO CAPACITIVE PRESENCE SENSOR FOR BURGLAR ALARM AND COMMAND

Allo stato attuale esistono diversi sensori di presenza come ad esempio quelli di tipo infrarosso, microonde, di pressione e di vibrazione. Raramente vengono utilizzati sensori di presenza alP'esterno per segnalare un allarme in quanto potrebbero essere soggetto a falsi allarmi se non in casi particolari per proteggere luoghi ad elevata sicurezza. In questi ultimi casi i costi di tali sensori diventano proibitivi da proporre alle utenze di tipo residenziale ad esempio. At present there are various presence sensors such as infrared, microwave, pressure and vibration sensors. Presence sensors are rarely used outside to signal an alarm as they could be subject to false alarms except in special cases to protect high security places. In the latter cases, the costs of these sensors become prohibitive to be offered to residential users, for example.

La nostra innovazione consiste in un sensore di presenza per esterno e interno, avente probabilità molto ridotta di falsi allarmi, essere non a vista e avere un costo sopportabile dalle utenze residenziali , industriali, artigianali, commerciali ecc. Esso potrebbe essere utilizzato come sensore di allarme sia all’esterno che all’interno e/o come accensione di luci per esterno o anche all’interno di locali. Avere un sensore di allarme all’esterno permette di scoraggiare eventuali intrusioni all’interno di edifici. Inoltre , il fatto di essere nascosto rende possibile la sua installazione in luoghi di interesse storico e culturale. 11 principio utilizzato è quello capacitivo. In particolare l’idea rappresenta un sensore capacitivo di presenza umana (Fig.l ) , che fornisce in uscita un segnale di allarme e/o un comando di accensione , non appena un essere umano (14) cammina sopra l’elemento capacitivo (2) sistemato all’interno degli interstizi di piastrelle (I ) o elementi similari. Il sensore capacitivo (Fig.l) è costituito da elemento capacitivo (2) collegata a una scheda elettronica di controllo (15) mediante cavo elettrico (3), secondo la rivendicazione precedente. La scheda elettronica (15) viene alimentata da una sorgente esterna (6) tramite cavo (13). Detta scheda di controllo fornisce in uscita un segnale (9) a una centrale allarme (11) e/o un comando di accensione (10) per apparecchiature elettriche (12) come luci, suonerìe ecc. Our innovation consists in a presence sensor for external and internal, with a very low probability of false alarms, being not visible and having a cost bearable by residential, industrial, artisan, commercial users etc. It could be used as an alarm sensor both indoors and outdoors and / or as a lighting switch for outdoors or even inside rooms. Having an alarm sensor outside allows you to discourage any intrusions inside buildings. Furthermore, the fact that it is hidden makes it possible to install it in places of historical and cultural interest. The principle used is the capacitive one. In particular, the idea represents a capacitive human presence sensor (Fig. 1), which outputs an alarm signal and / or an ignition command, as soon as a human being (14) walks over the capacitive element (2 ) placed inside the interstices of tiles (I) or similar elements. The capacitive sensor (Fig. 1) consists of a capacitive element (2) connected to an electronic control board (15) by means of an electric cable (3), according to the previous claim. The electronic board (15) is powered by an external source (6) via cable (13). Said control card outputs a signal (9) to an alarm control unit (11) and / or an ignition command (10) for electrical equipment (12) such as lights, bells, etc.

La scheda elettronica di controllo (15) è costituita da processore sensoristico (4) che in base ai parametri (Fig.2) di sensibilità P2 e di rumore PI, è in grado di determinare in uscita un segnale che indica la variazione capacitiva in ingresso dovuta al sensore (2). Tale processore è in grado di discriminare il rumore o presenza di animali da un una effettiva variazione capacitiva dovuta a presenza umana. In particolare (Fìg.3) il blocco (4) fornisce in uscita un segnale solo quando la variazione supera (43) il limite P2 e quando il rumore è inferiore (42) al parametro PI . L’uscita del blocco (4) va al processore temporale (7) che in base ai parametri di durata P3 e numero di impulsi P4 fornisce in uscita un segnale di allarme. In particolare (Fig. 3) il blocco (7) fornisce un segnale di allarme se al suo ingresso arriva un segnale la cui durata (71) supera P3 e quando il numero di variazioni (72) supera P4 entro un certo arco temporale (73). In questo modo è possibile discriminare i falsi allarmi da quelli reali. L’uscita del blocco (7) va àll’attuatore (8) che fornisce i segnali di potenza per la centrale di allarme e/o altre apparecchiature elettriche come illuminazione secondo le rivendicazioni precedenti. Detta scheda (15) potrà essere installata all’interno di cassette a incasso o a vista. Il sensore (Fig.4) capacitivo (2) è costituito da due conduttori che costituiscono l’armatura stessa del condensatore. Detti cavi vanno posizionati all’interno degli interstizi (1 1) di piastrelle o mattonelle (1) e sistemate in una matrice di n x m . Alcune sagome che detti conduttori (2) possono seguire sono indicate nelle Fig. 4 a), b), c) e d). Il vantaggio consiste nell’evitare di togliere o rompere le piastrelle ma semplicemente di inserire i conduttori all’interno degli interstizi delle mattonelle, sostanzialmente secondo le rivendicazioni precedenti e secondo quanto precedentemente descritto ed illustrato nei disegni allegati. The electronic control board (15) consists of a sensor processor (4) which, based on the P2 sensitivity and PI noise parameters (Fig. 2), is able to determine at the output a signal indicating the capacitive variation in input due to the sensor (2). This processor is able to discriminate the noise or presence of animals from an actual capacitive variation due to human presence. In particular (Fig.3) block (4) outputs a signal only when the variation exceeds (43) the P2 limit and when the noise is lower (42) than the PI parameter. The output of the block (4) goes to the time processor (7) which, based on the parameters of duration P3 and number of pulses P4, outputs an alarm signal. In particular (Fig. 3) block (7) provides an alarm signal if a signal arrives at its input whose duration (71) exceeds P3 and when the number of variations (72) exceeds P4 within a certain time frame (73 ). In this way it is possible to distinguish false alarms from real ones. The output of the block (7) goes to the actuator (8) which provides the power signals for the alarm control unit and / or other electrical equipment such as lighting according to the previous claims. This card (15) can be installed inside recessed or visible boxes. The capacitive sensor (Fig.4) (2) consists of two conductors that make up the armature of the capacitor itself. These cables must be positioned inside the interstices (1 1) of tiles or tiles (1) and arranged in a matrix of n x m. Some shapes that said conductors (2) can follow are indicated in Figs. 4 a), b), c) and d). The advantage consists in avoiding removing or breaking the tiles but simply inserting the conductors inside the interstices of the tiles, substantially according to the previous claims and according to what was previously described and illustrated in the attached drawings.

Claims (3)

RIVENDICAZIONI Dell’Invenzione Industriale dal Titolo: SENSORE CAPACITIVO DI PRESENZA PER ANTINTRUSIONE E COMANDO 1 ) Sensore capacitivo di presenza umana (Fig.l) che fornisce in uscita un segnale di allarme e/o un comando di accensione , non appena un essere umano (14) cammina sopra l’elemento capacitivo (2) sistemato all’interno degli interstizi di piastrelle (1) o elementi similari. CLAIMS Of the Industrial Invention entitled: CAPACITIVE PRESENCE SENSOR FOR BURGLAR ALARM AND COMMAND 1) Human presence capacitive sensor (Fig. 1) which outputs an alarm signal and / or an ignition command, as soon as a human being (14) walks over the capacitive element (2) placed inside the interstices of tiles (1) or similar elements. 2 ) Sensore capacitivo (Fig.l) costituito da elemento capacitivo (2) collegata a una scheda elettronica di controllo (15) mediante cavo elettrico (3), secondo la rivendicazione precedente. La scheda elettronica (15) viene alimentata da una sorgènte esterna (6) tramite cavo (13). Detta scheda di controllo fornisce in uscita un segnale (9) a una centrale allarme (11) e/o un comando di accensione (10) per apparecchiature elettriche (12) come luci, suonerie ecc. 2) Capacitive sensor (Fig. 1) consisting of a capacitive element (2) connected to an electronic control board (15) by means of an electric cable (3), according to the previous claim. The electronic board (15) is powered by an external source (6) by means of a cable (13). Said control card outputs a signal (9) to an alarm control unit (11) and / or an ignition command (10) for electrical equipment (12) such as lights, ringtones, etc. 3 ) Scheda elettronica di controllo (15) costituita da processore sensoristico (4) che in base ai parametri (Fig.2) di sensibilità P2 e di rumore PI, è in grado di determinare in uscita un segnale che indica la variazione capacitiva in ingresso dovuta al sensore (2). Tale processore è in grado di discriminare il rumóre o presenza di animali da un una effettiva variazione capacitiva dovuta a presenza umana. In particolare (Fig.3) il blocco (4) fornisce in uscita un segnale solo quando la variazione supera (43) il limite P2 e quando il rumore è inferiore (42) al parametro PI. L’uscita del blocco (4) va al processore temporale (7) che in base ai parametri di durata P3 e numero di impulsi P4 fornisce in uscita un segnale di allarme. In particolare (Fig. 3) il blocco (7) fornisce un segnale di allarme se al suo ingresso arriva un segnale la cui durata (71) supera P3 e quando il numero di variazioni (72) supera P4 entro un certo arco temporale (73). Ili questo modo è possibile discriminare i falsi allarmi da quelli reali. L’uscita del blocco (7) va all’attuatore (8) che fornisce i segnali di potenza per la centrale di allarme e/o altre apparecchiature elettriche come illuminazione secondo le rivendicazioni precedenti. Detta scheda (15) potrà essere installata all’interno di cassette a muro o a vista. Sensore (Fig.4) capacitivo (2) costituito da due, conduttori che costituiscono l’armatura stessa del condensatore. Detti cavi vanno posizionati all’interno degli interstizi (11) di piastrelle o mattonelle (1) e sistemate in una matrice di n x m . Alcune sagome che detti conduttori (2) possono seguire sono indicate nelle Fig. 4 a), b), c) e d). Il vantaggio consiste nell’evitare di togliere o rompere le piastrelle ma semplicemente di inserire i conduttori all’interno degli interstizi delle mattonelle, sostanzialmente secondo le rivendicazioni precedenti e secondo quanto precedentemente descritto ed illustrato nei disegni allegati.3) Electronic control board (15) consisting of a sensor processor (4) which, based on the P2 sensitivity and PI noise parameters (Fig. 2), is able to determine at the output a signal indicating the capacitive variation in input due to the sensor (2). This processor is able to discriminate the noise or presence of animals from an actual capacitive variation due to human presence. In particular (Fig.3) block (4) outputs a signal only when the variation exceeds (43) the P2 limit and when the noise is lower (42) than the PI parameter. The output of the block (4) goes to the time processor (7) which, based on the parameters of duration P3 and number of pulses P4, outputs an alarm signal. In particular (Fig. 3) block (7) provides an alarm signal if a signal arrives at its input whose duration (71) exceeds P3 and when the number of variations (72) exceeds P4 within a certain time frame (73 ). In this way it is possible to distinguish false alarms from real ones. The output of the block (7) goes to the actuator (8) which provides the power signals for the alarm control unit and / or other electrical equipment such as lighting according to the previous claims. This card (15) can be installed inside wall or visible boxes. Capacitive sensor (Fig.4) (2) consisting of two conductors that make up the armature of the capacitor itself. These cables must be positioned within the interstices (11) of tiles (1) and arranged in a matrix of n x m. Some shapes that said conductors (2) can follow are indicated in Figs. 4 a), b), c) and d). The advantage consists in avoiding removing or breaking the tiles but simply inserting the conductors inside the interstices of the tiles, substantially according to the previous claims and according to what was previously described and illustrated in the attached drawings.
IT000007A 2009-02-03 2009-02-03 CAPACITIVE SENSOR OF PRESENCE FOR ANTI-INTRUSION AND COMMAND ITBA20090007A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT000007A ITBA20090007A1 (en) 2009-02-03 2009-02-03 CAPACITIVE SENSOR OF PRESENCE FOR ANTI-INTRUSION AND COMMAND

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IT000007A ITBA20090007A1 (en) 2009-02-03 2009-02-03 CAPACITIVE SENSOR OF PRESENCE FOR ANTI-INTRUSION AND COMMAND

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846780A (en) * 1973-07-24 1974-11-05 Westinghouse Electric Corp Intrusion detection system
US4197529A (en) * 1978-02-17 1980-04-08 The United States Of America As Represented By The Secretary Of The Navy Intrusion detection apparatus
FR2645671A1 (en) * 1989-04-07 1990-10-12 Hesa Spa ALARM OR SIGNALING DEVICE IN WHICH THE SENSOR ELEMENT IS CONSISTED OF A CONTINUOUS CURRENT POLARIZED SHIELDED COAXIAL CABLE
DE202005001179U1 (en) * 2005-01-25 2005-04-07 Sick Ag Capacitive proximity sensor for lift control, has capacitor electrodes arranged in passenger waiting area and controls lift travel according to detected capacitance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846780A (en) * 1973-07-24 1974-11-05 Westinghouse Electric Corp Intrusion detection system
US4197529A (en) * 1978-02-17 1980-04-08 The United States Of America As Represented By The Secretary Of The Navy Intrusion detection apparatus
FR2645671A1 (en) * 1989-04-07 1990-10-12 Hesa Spa ALARM OR SIGNALING DEVICE IN WHICH THE SENSOR ELEMENT IS CONSISTED OF A CONTINUOUS CURRENT POLARIZED SHIELDED COAXIAL CABLE
DE202005001179U1 (en) * 2005-01-25 2005-04-07 Sick Ag Capacitive proximity sensor for lift control, has capacitor electrodes arranged in passenger waiting area and controls lift travel according to detected capacitance

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