FI121049B - Electronic connection device - Google Patents

Electronic connection device Download PDF

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Publication number
FI121049B
FI121049B FI20075702A FI20075702A FI121049B FI 121049 B FI121049 B FI 121049B FI 20075702 A FI20075702 A FI 20075702A FI 20075702 A FI20075702 A FI 20075702A FI 121049 B FI121049 B FI 121049B
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FI
Finland
Prior art keywords
current
control circuit
switching
lighting device
fluorescent lamp
Prior art date
Application number
FI20075702A
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Finnish (fi)
Swedish (sv)
Other versions
FI20075702A (en
FI20075702A0 (en
Inventor
Hannu Vihinen
Original Assignee
Helvar Oy Ab
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Application filed by Helvar Oy Ab filed Critical Helvar Oy Ab
Priority to FI20075702A priority Critical patent/FI121049B/en
Publication of FI20075702A0 publication Critical patent/FI20075702A0/en
Priority to AT08164248T priority patent/ATE548889T1/en
Priority to EP08164248A priority patent/EP2046099B1/en
Publication of FI20075702A publication Critical patent/FI20075702A/en
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Publication of FI121049B publication Critical patent/FI121049B/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2986—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2856—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2926—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Glass Compositions (AREA)
  • Furan Compounds (AREA)

Abstract

The invention relates to a lamp, comprising a fluorescent lamp (100) for the generation of illuminating radiation. The lamp comprises an electronic connection device (102) for providing an ignition voltage for the fluorescent lamp for activating the generation of illuminating radiation, the electronic connection device (102) comprises at least two switching transistors (Q1, Q2) for feeding current to a coil (L1) which develops an ignition voltage for the fluorescent lamp (100). The electronic connection device (102) has integrated therewith a control circuit (104) which measures the current of the at least two switching transistors (Q1, Q2) and, while in the process of measuring, the control circuit (104) detects whether an excessively high current is flowing through one or more switching transistors (Q1, Q2), whereby the control circuit (104) limits the excessively high current to a lower current level.

Description

Elektroninen liitäntälaiteElectronic ballast

Keksinnön ala 5 Loisteputkivalaisimet ja HID-valaisimet (High Intensity Discharge) liittyvät elektronisten liitäntälaitteiden kautta sähköisen tehon lähteeseen, josta saavat valaisuun tarvitsemansa energian ollessaan kytkettynä ON-tilaan.FIELD OF THE INVENTION Fluorescent lamps and High Intensity Discharge (HID) lamps are connected via electronic ballasts to a source of electrical power to provide the energy they require for illumination when switched on.

Tunnettu tekniikka 10Prior Art 10

Loisteputkivalaisimien ja HID-valaisimien loisteputki on täytetty kaasulla kuten esimerkiksi argonilla tai kryptonilla. Valon tuottamiseen tarvitaan lisäksi "pisaralleen" elohopeaa, joka kaasuuntuu sähköpurkauksen vaikutuksesta muodostaen ultraviolettisäteilyä sähkön purkautuessa loisteputken läpi. Lois-15 teputken sisäpinta on päällystetty fluoresoivalla materiaalilla, joka muuttaa elohopeahöyryssä tapahtuvan sähköpurkauksen muodostaman ultraviolettisäteilyn näkyväksi valoksi.Fluorescent tubes for fluorescent lamps and HID lamps are filled with gas such as argon or krypton. In addition, mercury, which is gassed by an electric discharge, produces ultraviolet radiation when the electricity is discharged through the fluorescent tube, to produce a "drop" of light. The inner surface of the Lois-15 tube is coated with a fluorescent material that converts ultraviolet radiation generated by mercury vapor discharge into visible light.

Loisteputken lisäksi loisteputkivalaisin ja HID-valaisin käsittää joko elektroni-20 sen liitäntä laitteen tai magneettisen kuristimen. Nykyään elektroniset liitäntä-laitteet ovat lähes kokonaan syrjäyttäneet magneettiset kuristimet. Elektronisissa liitäntälaitteissa muodostettava loisteputken läpi kulkeva virta on yleensä 20-100 kHz taajuista, tyypillisimmin 50-60 kHz.In addition to the fluorescent lamp, the fluorescent lamp and the HID lamp comprise either an electron-20 connection device or a magnetic ballast. Today, electronic ballasts have almost completely replaced magnetic ballasts. The fluorescent current generated in electronic ballasts is generally 20 to 100 kHz, most typically 50 to 60 kHz.

25 Kuviossa 1 on esitetty tunnetun tekniikan mukainen valaisin käsittäen loisteputken 100 ja elektronisen liitäntälaitteen 101. Elektroninen liitäntälaite käsittää elektroniikkapiirin, jolla loisteputkelle muodostetaan valaisuun tarvittava esimerkiksi 50 kHz:n taajuinen virta. Resonanssikelan LI fyysisen koon määräävät normaalin valaisutilan häviöt, mutta vielä enemmän loisteputken sy-30 tyttämisajankohtana muodostuva kyllästymisvirta. Kelan sisältämän ferriitin kyllästyessä kelan induktanssi laskee varsin voimakkaasti loisteputken sytyttämisen ajankohtana. Samalla vielä syttymättömän loisteputken yli vaikuttava 2 jännite voimistuu. Tilanne on hallitsematon, kun tunnetussa tekniikassa voidaan tarkkailla vain puolisillan Ql, Q2 alemman kytkintransistorin Q2 virtaa. Kuvan 1 mukaisessa kytkennässä voidaan säätää transistoreiden kautta kulkevaa virtaa vain mittaamalla kytkintransistorin Q2 virtaa vastuksesta R3.Figure 1 shows a prior art luminaire comprising a fluorescent lamp 100 and an electronic ballast 101. The electronic ballast comprises an electronic circuit for generating, for example, a 50 kHz current for illumination. The physical size of the resonant coil L1 is determined by the losses of the normal illumination state, but even more by the saturation current at the time of the introduction of the fluorescent lamp. As the ferrite contained in the coil becomes saturated, the inductance of the coil decreases quite strongly at the time of the ignition of the fluorescent lamp. At the same time, the voltage across the 2 non-flammable fluorescent lamp is amplified. The situation is uncontrolled when in the prior art only the current of the lower switching transistor Q2 of the half-bridge Q1, Q2 can be monitored. In the circuit of Fig. 1, the current flowing through the transistors can be controlled only by measuring the current of the switching transistor Q2 from resistor R3.

5 Transistorin Ql virran kulku ei ole välittömästi säädettävissä tai katkaistavissa. Täten kyllästyvä kela LI voi aiheuttaa transistorien tuhoutumisen tai turvallisuusriskin (esim. palovaara) aiheuttavan liian suuren jännitteen kytkeytymisen loisteputken yhteyteen.5 The current flow of transistor Q1 is not immediately adjustable or interruptible. Thus, the saturated coil L1 may cause the transistors to be destroyed or an excessive voltage being applied to the fluorescent tube causing a safety risk (e.g. fire hazard).

10 Keksinnön Ivhvt selostusDescription of Ivhvt of the Invention

Keksinnön tavoitteena on valaisimen kelan virran hallitseminen loisteputken sytytyksen ajankohtana siten, että varmistetaan kelan virran pysyminen turvallisissa arvoissa. Tämä saavutetaan keksinnön mukaisella valaisimella, joka 15 käsittää loisteputken valaisevan säteilyn muodostamiseksi. Valaisin käsittää elektronisen liitäntälaitteen sytytysjännitteen muodostamiseksi loisteputkelle valaisevan säteilyn muodostumisen käynnistämiseksi, elektroninen liitäntälai-te käsittää ainakin kaksi kytkintransistoria virran syöttämiseksi kelalle, jolla muodostuu loisteputken sytytysjännite, ja elektroniseen liitäntälaitteeseen on 20 integroitu ohjainpiiri, joka mittaa ainakin kahden kytkintransistorin virtaa ja mitatessaan ohjainpiiri havaitsee, mikäli yhden tai useamman kytkintransistorin kautta kulkee liian suuri virta, jolloin ohjainpiiri rajoittaa liian suuren virran alemmalle virran tasolle.It is an object of the invention to control the coil current of a luminaire at the time of ignition of the fluorescent lamp so as to ensure that the coil current remains within safe values. This is achieved by a luminaire according to the invention comprising a fluorescent tube for generating illuminating radiation. The luminaire comprises an electronic ballast for generating a ignition voltage on the fluorescent lamp to initiate the generation of illuminating radiation, the electronic ballast comprising at least two switching transistors for supplying a coil generating a fluorescent ignition voltage, and the electronic ballast having at least two or too many switching transistors carry too much current, whereby the control circuit restricts too much current to a lower current level.

25 Keksintö perustuu siihen, että mitataan jatkuvatoimisesti kelan kytkintransis-toreiden kautta kulkevia virtoja, ja kun huomataan, että yhden tai useamman kytkintransistorin kautta kulkee liian suuri virta, katkaistaan virran kulku sopivaksi katkaisuajaksi, jotta kelan virta saadaan rajoitettua alemmalle tasolle.The invention is based on the continuous measurement of currents passing through coil switch transistors, and when it is noted that too much current flows through one or more switch transistors, the current is cut off for a suitable cut-off time to limit the coil current to a lower level.

30 Keksinnön etuna on, että valaisimen kelan virta pidetään sopivissa rajoissa valaisimen toimivuuden kannalta ja esimerkiksi paloturvallisuuden kannalta.An advantage of the invention is that the current of the coil of the luminaire is kept within suitable limits for the functionality of the luminaire and, for example, for fire safety.

33

Kelan virran rajoittaminen myös mahdollistaa fyysiseltä kooltaan pienempien ja täten edullisempien kelojen käyttämisen.Limiting the current of the coil also allows the use of coils of smaller physical size and thus more favorable.

Kuvioluettelo 5List of patterns 5

Kuvio 1 esittää tunnetun tekniikan mukaista valaisinta.Figure 1 shows a prior art luminaire.

Kuvio 2 esittää keksinnön mukaista valaisinta.Figure 2 shows a lamp according to the invention.

10 Kuvio 3 esittää keksinnön edullisen toteutusmuodon mukaista sytytys- kondensaattorin virran mittaamista samalla vastuksella kuin puo-lisillankin käyttämällä diodiparia Q3a ja Q3b.Fig. 3 shows a measurement of the ignition capacitor current in accordance with a preferred embodiment of the invention with the same resistor as the half using diode pairs Q3a and Q3b.

Kuvio 4 esittää keksinnön edullista toteutusmuotoa, johon on lisätty lois-15 teputken katodin mittaustoteutus.Figure 4 illustrates a preferred embodiment of the invention with the implementation of a parasitic tube cathode measurement implementation.

Keksinnön yksityiskohtainen selostusDETAILED DESCRIPTION OF THE INVENTION

Kuvio 2 esittää keksinnön mukaista valaisinta, joka käsittää loisteputken 100 20 ja elektronisen liitäntälaitteen 102, johon on toteutettu keksinnön mukainen ohjainpiiri 104. Kuvan 2 mukaiseen elektroniseen liitäntä laitteeseen 102 on integroitu ohjainpiiri 104 siten, että liitäntä laitteessa voidaan tarkkailla erikseen sekä ylemmän kytkintransistorin Q1 että alemman kytkintransistorin Q2 virtaa, ja mikäli aiheelliseksi havaitaan, voidaan rajoittaa kelan LI virta sopi-25 valle tasolle. Ylemmän kytkintransistorin Q1 virtaa voidaan tarkkailla mittaamalla vastuksen R4 virtaa ennen loisteputken 100 syttymistä. Samaa virtaa voidaan mitata muualtakin virran kulkureitiltä (Vbus - Q1 - LI - Cl) joko vastuksen kautta tai esimerkiksi virtamuuntajalla. Vastaavasti kytkintransistorin Q2 virtaa mitataan vastuksen R3 kautta.Figure 2 illustrates a luminaire according to the invention comprising a fluorescent tube 100 20 and an electronic ballast 102 implemented with a control circuit 104 according to the invention. The electronic ballast 102 according to Figure 2 is integrated with a control circuit 104 so that both the upper switching transistor Q1 and the lower the current of the switching transistor Q2, and if deemed appropriate, the current of the coil L1 can be limited to a suitable level. The current of the upper switch transistor Q1 can be monitored by measuring the current of the resistor R4 before the fluorescent lamp 100 lights up. The same current can be measured elsewhere on the current path (Vbus - Q1 - LI - Cl) either through a resistor or, for example, by a current transformer. Similarly, the current of switching transistor Q2 is measured through resistor R3.

30 430 4

Ohjainpiiriin 104 on asetettuna virrantason raja-arvo, jota kummankaan kytki ntransistori n Q1 ja Q2 kautta kulkeva virta ei saa ylittää. Virrantason raja-arvon asetus ohjainpiiriin suoritetaan esimerkiksi ohjelmoidusti.Controller circuit 104 is provided with a current level limit, which must not be exceeded by either of the switches n1 through Q1 and Q2. The setting of the current level threshold to the control circuit is performed, for example, in a programmed manner.

5 Kumpaakin kytkintransistoria mitataan sytytyksen ajankohtana ja, kun huomataan, että jomman kumman kytki ntransistori n virta ylittää sallitun raja-arvon, katkaistaan virran kulku kytkimellä 106, 108 kyseisen kytkintransisto-rin kautta. Keksinnön edullisissa toteutusmuodoissa, joita on esitetty esimerkiksi kuvioissa 2, 3 ja 4, kytkimellä 106, 108 tarkoitetaan itse kytkintransisto-10 ria Ql, Q2, joka toimii releen tapaisesti ohjainpiirin 104 välityksellä toteutettavassa virtaohjauksessa. Kuvissa 2, 3 ja 4 esitetyt kytkintransistorit Ql, Q2 ovat MOSFET-transistoreja. Kytkintransistorit voivat myös olla erilaisilla tekniikoilla valmistettuja transistoreita kuten bipolaari- tai IGBT-transistoreja.Each switch transistor is measured at the time of ignition, and when it is noticed that the current of either switch transistor exceeds the permissible limit, the current is switched off by switch 106, 108 through said switch transistor. In preferred embodiments of the invention, such as those shown in Figures 2, 3 and 4, switch 106, 108 refers to the switch transistor Q1, Q2 itself, which functions as a relay in the current control via the control circuit 104. The switching transistors Q1, Q2 shown in Figures 2, 3 and 4 are MOSFETs. The switching transistors may also be transistors manufactured by various techniques, such as bipolar or IGBT transistors.

15 Ohjainpiiriin 104 on myös ohjelmoitu virran kulun katkaisuaika, minkä jälkeen virran kulku kytketään kytkimellä 106, 108 takaisin päälle. Mittaamalla pulssi pulssilta molempien kytkintransistoreiden Ql, Q2 virtoja ja katkaisemalla raja-arvon ylittäneen virran kulkeminen kytki ntransistori n kautta, toisin sanoen sulkemalla kytkintransistori välittömästi riittävän pitkäksi katkaisuajaksi, voi-20 daan myös kelan L virta rajoittaa riittävän pieneksi. Tällä tavoin varmistetaan, etteivät kytkintransistorit vaurioidu tai etteivät loisteputken 100 jännitteen maksimiarvot ylity.Controller circuit 104 is also programmed with a time-out switching time, after which power-on switch 106,108 is switched back on. By measuring the pulse from pulse currents of both switching transistors Q1, Q2 and switching off the current exceeding the limit through the switching transistor n, i.e. by switching off the switching transistor immediately for a sufficiently long cut-off time, the current of coil L can also be limited sufficiently low. In this way, it is ensured that the switching transistors are not damaged or that the maximum voltage values of the fluorescent tube 100 are not exceeded.

Tilanteessa, jossa sytytyksen ajankohtana havaitaan, että kummankin kytkin-25 transistorin Ql, Q2 kautta kulkee raja-arvon ylittävä virta, kytkintransistorit Ql, Q2 suljetaan katkaisuajaksi. Tällöin muodostuu tilanne, jossa molempien kytkintransistoreiden kautta kulkevien virtojen taajuus kasvaa ja koska taajuus on suoraan verrannollinen jännitteeseen, loisteputken 100 sytytysjännite täten kasvaa kohti riittävää sytytysarvoansa.In the situation where, at the time of ignition, it is detected that current exceeding the threshold current flows through each of the switch transistors Q1, Q2, the switch transistors Q1, Q2 are closed for a cut-off time. This creates a situation in which the frequency of the currents passing through both switching transistors increases, and since the frequency is directly proportional to the voltage, the ignition voltage of the fluorescent tube 100 thus increases towards its sufficient ignition value.

3030

Kuvio 3 esittää keksinnön edullisen toteutusmuodon mukaista sytytyskon-densaattorin virran mittaamista samalla vastuksella kuin puolisillankin Ql, Q2 5 käyttämällä diodiparia Q3a ja Q3b. Kuvion 2 esittämässä keksinnön mukaisessa toteutuksessa käytetään kahta vastusta virran mittaamiseen, ja mikäli käytettävissä on IC-piirilevy (Integrated Circuits), suoritetaan mittausta kahden erillisen mittauskohdan kautta. Sen sijaan kuviossa 3 esitetyllä keksinnön 5 edullisella toteutusmuodolla diodipari Q3a ja Q3b mahdollistaa sytytyskon-densaattorin Cl virran mittaamisen ja puolisillan, joka käsittää kytkintransis-torit Q1 ja Q2, virran mittaamisen samalla vastuksella R3. Vastaavasti IC-piirilevyllä on vain yksi mittauskohta, jota kautta mainitut virtojen mittaamiset suoritetaan. Kuvion 3 esittämässä keksinnön edullisessa toteutusmuodos-10 sa voidaan säätää sytytyksen ajankohtana molempien kytkintransistoreiden Q1 ja Q2 virtaa yhdestä liitynnästä IC-piirilevyyn.Figure 3 illustrates the measurement of the current of an ignition capacitor according to a preferred embodiment of the invention with the same resistor as the half bridge Q1, Q2 5 using diode pairs Q3a and Q3b. In the embodiment of the invention shown in Fig. 2, two resistors are used for measuring current, and if an IC circuit board (Integrated Circuits) is available, measurement is made through two separate measuring points. Instead, in the preferred embodiment of the invention 5 shown in Figure 3, the diode pair Q3a and Q3b enable the current of the ignition capacitor C1 and the current of the half bridge comprising the switching transistors Q1 and Q2 to be measured with the same resistor R3. Correspondingly, the IC circuit board has only one measuring point through which said current measurements are performed. In the preferred embodiment of the invention shown in Fig. 3, the current of both switching transistors Q1 and Q2 can be adjusted at one time to the IC circuit board at the time of ignition.

Kuviossa 4 on esitetty keksinnön edullinen toteutusmuoto, johon on lisätty loisteputken 100 katodin mittauspiiri 110, joka käsittää vastukset (R4, R5, 15 R6), diodin Q5 ja kondensaattorin C5. Mittauspiirin tarvitsema käyttöjänniteFigure 4 illustrates a preferred embodiment of the invention with the addition of a cathode measuring circuit 110 of a fluorescent tube 100 comprising resistors (R4, R5, 15 R6), a diode Q5 and a capacitor C5. Operating voltage required by the measuring circuit

Vcc syötetään mittauspiiriin 110 vastuksen R5 kautta. Muilta osin kuvio 4 käsittää samankaltaisen toteutuksen kuin on esitetty kuvion 3 yhteydessä. Koska sytytyskondensaattorin Cl virtaa tarkkaillaan jatkuvatoimintoisesti kuvien 3 ja 4 kytkennöissä, voidaan samasta IC-piirilevyn mittauskohdasta mitata 20 myös loisteputken 100 jännite loisteputken ollessa valaisutilassa.Vcc is supplied to measuring circuit 110 via resistor R5. Otherwise, Figure 4 comprises an embodiment similar to that shown in connection with Figure 3. Since the current of the ignition capacitor C1 is continuously monitored in the circuits of Figures 3 and 4, the voltage of the fluorescent lamp 100 can also be measured at the same measuring point of the IC board while the fluorescent lamp is in the illumination state.

Sytytyskondensaattorin Cl virta on suoraan verrannollinen taajuuteen, jonka arvo tunnetaan. Vastaavasti sytytyskondensaattorin Cl virta on suoraan verrannollinen loisteputken 100 jännitteeseen. Täten loisteputken deaktivoitu-25 minen eli sammuminen voidaan havaita myös samasta mittauskohdasta. Kyseistä mittauskohtaa on mahdollista hyödyntää tasasuuntaavan loisteputken tunnistamisessakin perustuen tasasuuntaavien loisteputkien virtojen erilaisiin suuruuksiin. Myös loisteputken puuttuminen, toisin sanoen loisteputken katodin puuttuminen, tai paikallaan olo voidaan todentaa samaisen mittaus-30 kohdan kautta tapahtuvalla mittauksella.The current of the ignition capacitor C1 is directly proportional to a frequency of known value. Similarly, the current of the ignition capacitor C1 is directly proportional to the voltage of the fluorescent lamp 100. Thus, the deactivation or the extinction of the fluorescent lamp can also be observed at the same measuring point. It is also possible to utilize this measuring point in the detection of a rectifying fluorescent lamp based on different magnitudes of rectifying fluorescent lamps. Also, the absence of a fluorescent lamp, i.e. the absence of a fluorescent cathode, or the presence of a fluorescent lamp can be verified by measuring through the same measuring point.

66

Vaikka keksintöä on edellä selostusosassa kuvattu viitaten kuvioissa esitettyihin piirikaavioihin, ei keksintö ole rajoittunut selostusosaan ja kuvioiden 2-4 piirikaavioihin vaan keksintöä voidaan muunnella oheisten patenttivaatimusten määrittämissä rajoissa. Yhtenä esimerkkinä mainittakoon, että konden-5 saattorin C2 ja loisteputken 100 järjestys voi olla sarja kytkennässä eri muutoksen vaikuttamatta olennaisesti keksinnön mukaisen toteutuksen toimintaan. Vastaavasti muunlaisetkin oheisten patenttivaatimusten määrittämissä rajoissa olevat kytkentäkombinaatiot ja komponenttityypit voivat tulla kyseeseen keksinnön mukaisina toteutuksina. Keksinnön mukaisissa toteutusmuo-10 doissa valaisin voi olla esimerkiksi loisteputkivalaisin (fluorescent lamp) tai HID-valaisin (high intensity discharge lamp).Although the invention has been described above in the description section with reference to the circuit diagrams shown in the figures, the invention is not limited to the description section and the circuit diagrams of figures 2-4 but the invention can be modified within the scope of the appended claims. As an example, the order of the condenser 5 C2 and the fluorescent tube 100 may be a series of coupling changes without substantially affecting the operation of the embodiment of the invention. Similarly, other combinations of combinations and component types within the scope of the appended claims may be embodiments of the invention. In embodiments of the invention, the luminaire may be, for example, a fluorescent lamp or a high intensity discharge lamp (HID).

Claims (17)

1. Belysningsanordning innefattande ett lysrör (100) för generering av bely-sande strälning, en elektronisk kopplingsanordning (102) för bildande av en 5 tändningsspänning ät lysröret för igängsättning av den belysande strälning-en, vilken elektronisk kopplingsanordning (102) innefattar ätminstone tvä kopplingstransistorer (Ql, Q2) för matning av Ström tili en spole (LI) med vilken lysrörets (100) tändningsspänning alstras, och i den elektroniska kopp-lingsanordningen (102) är integrerad en styrkrets (104), kännetecknad 10 därav, att styrkretsen (104) mäter ätminstone tvä kopplingstransistorers (Ql, Q2) Ström och under sin mätning detekterar styrkretsen (104) huruvida en för stor Ström gär genom kopplingstransistorn Ql eller Q2 i förhällande tili inställda gränsvärdet för strömmen, varvid styrkretsen (104) bryter styrning-en av den koppiingstransistor, genom vilken strömmen har observerats var 15 för stor, och kopplar pä den andra kopplingstransistorn, Ql eller Q2, och med förmedling av nämnda styrkrets (104) kan vid behov kopplingstransisto-rernas (Ql, Q2) toppvärden regleras.An illumination device comprising an illumination tube (100) for generating illumination radiation, an electronic coupling device (102) for forming an ignition voltage, the illumination tube for switching on the illumination radiation, which electronic coupling device (102) comprises at least two coupling transistors. (Q1, Q2) for supplying current to a coil (LI) by which the ignition voltage of the fluorescent lamp (100) is generated, and in the electronic coupling device (102) is integrated a control circuit (104), characterized in that the control circuit (104) ) measures at least two switching transistors (Q1, Q2), and during its measurement, the control circuit (104) detects whether a too large current passes through the switching transistor Q1 or Q2 relative to the set limit value for the current, whereby the control circuit (104) breaks the control of switching transistor, through which the current has been observed was too large, and switches on the second switching transistor magnets, Q1 or Q2, and by mediating the said control circuit (104), the peak values of the coupling transistors (Q1, Q2) can be adjusted if necessary. 2. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att belys-20 ningsanordningen är en lysrörslampa.Lighting device according to claim 1, characterized in that the lighting device is a fluorescent lamp. 3. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att belys-ningsanordningen är en HID-lampa (High Intensity Discharge).Lighting device according to claim 1, characterized in that the lighting device is a High Intensity Discharge (HID) lamp. 4. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen (102) omfattar en styrkrets (104) för att kontrollera kopplingstransistorns (Ql) Ström genom att mätä strömmen i ett motständ (R4) i serie med en spole (LI) vid tändningen av lysröret (100).Lighting device according to claim 1, characterized in that the electronic coupling device (102) comprises a control circuit (104) for controlling the current of the coupling transistor (Q1) by measuring the current in a resistor (R4) in series with a coil (LI) at the lighting of the fluorescent lamp (100). 5. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen (102) omfattar en styrkrets (104) för kon- troll av kopplingstransistorns (Q2) Ström genom att mätä strömmen i ett i strömbanan anordnat motständ (R3).Lighting device according to claim 1, characterized in that the electronic coupling device (102) comprises a control circuit (104) for controlling the current of the coupling transistor (Q2) by measuring the current in a resistor (R3) arranged in the current path. 6. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att styr-5 kretsen (104) omfattar en strömtransformator för att mätä strömmen i en eller flera kopplingstransistorer (Ql, Q2) i strömbanan.Lighting device according to claim 1, characterized in that the control circuit (104) comprises a current transformer for measuring the current in one or more switching transistors (Q1, Q2) in the current path. 7. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att i styr-kretsen (104) är ett gränsvärde för strömnivän ställt, vilket strömmen genom 10 ett eller flera kopplingstransistorer (Ql, Q2) inte kan överskridas.Lighting device according to claim 1, characterized in that in the control circuit (104) a limit value for current level is set, which current cannot be exceeded by one or more switching transistors (Q1, Q2). 8. Belysningsanordning enligt patentkrav 7, kännetecknad därav, att gräns-värdet för strömnivän är ställt i styrkretsen (104) programmerat.Lighting device according to claim 7, characterized in that the limit value for current level is set in the control circuit (104) programmed. 9. Belysningsanordning enligt patentkrav 7, kännetecknad därav, att den elektroniska kopplingsanordningen (102) omfattar kopplingar (106,108) för brytning av strömmarna, som överskrider gränsvärdena för strömnivän.Lighting device according to claim 7, characterized in that the electronic coupling device (102) comprises couplings (106, 108) for breaking the currents which exceed the current level limit values. 10. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att i 20 styrkretsen (104) har programmerat ställts en brytningstid för strömmen, varefter strömmen igen kan kopplas pä med kopplingen (106, 108).Lighting device according to claim 1, characterized in that a switching time for the current has been programmed in the control circuit (104), after which the current can again be switched on with the coupling (106, 108). 11. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen omfattar ett diodpar (Q3a, Q3b) för mät- 25 ning av tändningskondensatorns (Cl) och kopplingstransistorernas (Ql, Q2) strömmar med samma motständ (R3).Illumination device according to claim 1, characterized in that the electronic switching device comprises a pair of diodes (Q3a, Q3b) for measuring the currents of the ignition capacitor (C1) and the switching transistors (Q1, Q2) with the same resistance (R3). 12. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen (102) förverkligats som ett IC (IntegratedLighting device according to claim 1, characterized in that the electronic coupling device (102) is realized as an IC (Integrated). 30 Circuit) kretskortsförverkligande omfattande en anslutning, genom vilken kopplingstransistorernas (Ql, Q2) strömmar kan regleras.Circuit board realization comprising a connection through which the currents of the switching transistors (Q1, Q2) can be controlled. 13. Belysningsanordning enligt patentkrav 1, kännetecknad därav, attden elektroniska kopplingsanordningen (102) är integrerad i en mätkrets (110) i lysrörets (100) katod.Lighting device according to claim 1, characterized in that the electronic coupling device (102) is integrated in a measuring circuit (110) in the cathode of the fluorescent lamp (100). 14. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen (102) förverkligats som ett IC (Integrated Circuit) kretskortsförverkligande omfattande en anslutning, genom vilken lysrörets (100) spänning mats dä lysröret är i belysningsmod.Lighting device according to claim 1, characterized in that the electronic switching device (102) is realized as an IC (Integrated Circuit) circuit board realization comprising a connection through which the voltage of the fluorescent lamp (100) is supplied when the fluorescent lamp is in illumination mode. 15. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen (102) förverkligats som ett IC (Integrated Circuit) kretskortsförverkligande omfattande en anslutning, genom vilken med mätning lysrörets (100) deaktivering observeras.Illumination device according to claim 1, characterized in that the electronic switching device (102) is realized as an IC (Integrated Circuit) circuit board realization comprising a connection, through which the deactivation of the fluorescent lamp (100) is observed. 16. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen (102) förverkligats som ett IC (Integrated Circuit) kretskortsförverkligande omfattande en anslutning, genom vilken identifieras, vilket lysrör (100) det är fräga om pä basen av lysrörens ström-mars olika storlekar. 20Illumination device according to claim 1, characterized in that the electronic switching device (102) is realized as an IC (Integrated Circuit) circuit board realization comprising a connection, through which is identified, which fluorescent lamp (100) is concerned about the base of the fluorescence current different sizes. 20 17. Belysningsanordning enligt patentkrav 1, kännetecknad därav, att den elektroniska kopplingsanordningen (102) förverkligats som ett IC (Integrated Circuit) kretskortsförverkligande omfattande en anslutning, genom vilken observeras om lysröret (100) är pä plats. 25Illumination device according to claim 1, characterized in that the electronic switching device (102) is realized as an IC (Integrated Circuit) circuit board realization comprising a connection, through which it is observed if the fluorescent tube (100) is in place. 25
FI20075702A 2007-10-04 2007-10-04 Electronic connection device FI121049B (en)

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FI20075702A FI121049B (en) 2007-10-04 2007-10-04 Electronic connection device
AT08164248T ATE548889T1 (en) 2007-10-04 2008-09-12 DEVICE FOR AN ELECTRONIC CONNECTION FOR A LAMP
EP08164248A EP2046099B1 (en) 2007-10-04 2008-09-12 Electronic connection device for a lamp

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FI121561B (en) 2009-06-30 2010-12-31 Helvar Oy Ab Adjusting and measuring the functions of the electronic ballast

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US4873471A (en) 1986-03-28 1989-10-10 Thomas Industries Inc. High frequency ballast for gaseous discharge lamps
US7288898B2 (en) * 2005-03-04 2007-10-30 International Rectifier Corporation Automotive high intensity discharge lamp ballast circuit

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