CN107231740A - The apparatus and method for especially running discharge lamp for projection purpose - Google Patents
The apparatus and method for especially running discharge lamp for projection purpose Download PDFInfo
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- CN107231740A CN107231740A CN201710176309.XA CN201710176309A CN107231740A CN 107231740 A CN107231740 A CN 107231740A CN 201710176309 A CN201710176309 A CN 201710176309A CN 107231740 A CN107231740 A CN 107231740A
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Classifications
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- 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
- H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal 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
- H05B41/288—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
-
- 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
- H05B41/36—Controlling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
It is used in particular project the device that purpose runs discharge lamp the present invention relates to a kind of, including：At least one can exchange electrically driven (operated) discharge lamp, and it has first electrode and second electrode；Control device, at least two current waveforms for controlling discharge lamp are provided, corresponding current waveform is walked by the corresponding envelope curve trend on the lamp current to be controlled through discharge lamp and the corresponding polarity on the flow direction of lamp current to be controlled and always described.Measurement apparatus determines the measured value associated with the state parameter of discharge lamp, and it is suitable to the electrode geometry state for inferring one of two electrodes.Apparatus for evaluating determines metewand, it is associated with controling electrode geometry change during discharge lamp using one of at least two current waveforms, and affiliated current waveform of the control device by the metewand determined for one of at least two current waveforms relative at least two current waveforms is stored.The invention further relates to a kind of correlation method for being used to run discharge lamp.
Description
Technical field
The present invention relates to a kind of device that discharge lamp is especially run for projection purpose.In addition used the invention further relates to one kind
In the method for especially running discharge lamp for projection purpose.
Background technology
For applying the gas-discharge lamp in video projection applications to be typically designed for the so-called of alternating current operation
Short-arc lamp, it provides about 1 millimeter of arc length to realize high optical projection quality, thus gived several to electrode
The special requirement of the stability of what shape.Ultrahigh pressure mercury lamp is especially used for this.Such lamp quilt depending on manufacturer
It is described as P-VIP lamps or UHP lamps.Due to high current density, the eletrode tip of such lamp will be held in operation
By high heat load, it causes metamorphosis, that is, electrode geometry change, particularly electrode strile-back burning and/or
The change of tip length more specifically tip diameter, the more specifically change of pointed shape and/or the change of sophisticated wall.By
The change of this caused arc length and position not only greatly directly affects modulating voltage and effective light in projection arrangement is defeated
Go out but also greatly directly affect the aging characteristics of discharge lamp, such as devitrification or melanism.
For high life for realizing discharge lamp normal method and for example kept as far as possible in terms of the stability of electric arc
Identical light generates quality, it is intended to：The selection method of operation as favourable as possible on the life-span, particularly in terms of commutating frequency
(polarity for changing the discharge current flowed by discharge lamp with the commutating frequency)；The change of interval is carried out with different frequencies
Change；So-called DC phases are introduced, wherein by omitting the default commutation in lamp current, in gas-discharge lamp at the time point
It is used as the reinforcement fusing for occurring existing eletrode tip on the electrode of anode working.Such interference is able to rely on measurement
The modulating voltage gone out is realized.Voltage-dependent determines at the time point of manufacture projection arrangement and can be in lamp phase burning time herein
Between be no longer changed.
Under the scene, the B1 of EP 2 168 408 disclose a kind of method for being controled to gas-discharge lamp, its
The running frequency of middle lamp is switched to the second fixation from the first default frequency values of fixation dependent on fixed default magnitude of voltage and preset
Frequency values, thus obtain the tip constructed on an electrode of lamp in the first operational mode, and in the second operation
In pattern, tip on this electrode is melted back at least in part.
A kind of method for running gas-discharge lamp is disclosed by the A1 of DE 102,009 006 338, wherein, with predetermined
Time interval realize repeatedly and dependent on fixed default magnitude of voltage and apply DC voltage phase.
Extremely low frequency substantially herein at 0 hertz (DC) into 30 hertz of scope cause the fusing of eletrode tip and
The tip is shortened, and this causes the rising of modulating voltage.Intermediate frequency between 20 hertz to 120 hertz typically results in electrode tip
The growth at end.High-frequency in the scope more than 120 hertz causes the slow growth of eletrode tip, however the growth with generally
Material at the side of eletrode tip peels off superposition.Frequency limitation, which is only capable of cursorily defining and further depend on electrode, to be set
The ageing state of meter, the running current of discharge lamp and discharge lamp.
Although there is known the fundamental mechanism of eletrode tip influence, but this and different factors, particularly eletrode tip
Length and diameter, the state and discharge current of electrode tip are related.Therefore can not be in a predictive manner the every kind of of lamp type
Sample desirably assumes that identical current waveform to realize long service life, especially lamp also in an unpredictable manner
Change with the increased life-span.
The content of the invention
It is an object of the invention to provide the discharge lamp that a kind of apparatus and method, its driving energy are run with alternating current, so that with
Particularly simple ways and means improve life performance.
The present invention includes at least one energy from the device for running the especially discharge lamp of projection purpose, the device
The discharge lamp of alternating current operation, the discharge lamp carries first electrode and second electrode, and including control device, the control device
At least two current waveforms for controlling discharge lamp are designed to provide for, wherein, each current waveform can be worn by being relevant to
The corresponding envelope curve trend of the lamp current to be controlled of overdischarge lamp and the flowing by being relevant to lamp current to be controlled
The corresponding polarity in direction, which is walked, always to be described.The device includes being used to determine the survey associated with the state parameter of discharge lamp in addition
The measurement apparatus of value, the measured value is adapted for carrying out the state of the electrode geometry to first electrode and/or second electrode
Infer.
According to the present invention, the device is further designed by the apparatus for evaluating for determining metewand, the metewand
With the first electrode and/or second electrode geometry when being controled using a pair of discharge lamps of at least two current waveforms
Change be associated, wherein, control device be designed for the metewand that is determined for one of at least two current waveforms relative to
The affiliated current waveform of at least two current waveforms is stored, and in the first interval, by means of what is stored for this
Metewand in order in the second interval for follow the first interval carry out control selection at least two current waveforms it
One.
The present invention is based on the recognition that, i.e., in the control device as a part for the device for driving discharge lamp
The current waveform of offer can be evaluated (classification) in terms of its influence to the electrode geometry of discharge lamp, and therefore provide
Following possibility, the i.e. state pointedly on the electrode geometry of discharge lamp influence.Exchanging electrically driven (operated) electric discharge
On the electrode tip of lamp, being passed through depending on the starting point in electric arc (extending between two electrodes when the electric arc is in gas discharge) should
The electric current of electrode flowing can form such localizing electrode tip as described above.Therefore the change of electrode geometry is managed
Solve being burnt to strile-bacing or at corresponding electrode, namely electric in first electrode and/or second for the eletrode tip for presence
Electrode-tip growth at pole.Have by operation and electric discharge electricity ensure that with the discharge lamp of the eletrode tip of the imprinting moulding of determination
The stabilization of arc and uniform operation.Suitable electrode geometry can reliably be obtained by the present invention.
Therefore the present invention realizes continuously to determine during the life-span is existed with which type of method of operation or current waveform
Current time point can realize preferable performance, so as to can targetedly change the method for operation or electric current when needed
Waveform.
Perform continuous learning process to a certain extent in this way, this is achieved in, i.e., the device is by commenting
Estimate the current waveform that coefficient identifies whether currently to perform to further result in preferable electrode characteristic or whether have other electric current
Waveform, it causes better characteristics at the time point.This considers such understanding, i.e., one or identical current waveform exist
The type and intensity of its influence to electrode can be changed during life-span, and for example cause the current waveform to burning of strile-bacing slightly
The time point in evening can result in syntrophism or opposite.Self study adjuster is directed on that point.The present invention is therefore
Suitable for the application with multiple different envelope curves, it can optionally be activated.However, can certainly use is used for
Produce unique envelope curve of total current waveform.
The present invention proposes to apply the device, with driving especially high pressure or in the form of ultra-high pressure gas discharge lamp electric discharge
Lamp, such as light effect application or headlight application or the general illumination application of motor vehicle, in illuminating indoors
Using.
It can preferably propose, envelope curve trend is identical for each at least two current waveforms.
The constant envelope curve trend of piecewise formula can for example pass through envelope curve vector description herein.Equally, the polarity of discharge current
Trend can be described for example, by the commutating mode of the form of commutation vector.
Measured value especially can be magnitude of voltage, and it is by the voltage determination that is applied on discharge lamp.It is applied on discharge lamp
Voltage is commonly described as burning voltage.Burning voltage rise therefore with least one electrode at first or second electrode
The fusing at tip is related, is derived from the effective extension of electrode spacing and and then obtains the length of electrical discharge arc and effectively prolong
It is long.In corresponding mode, the reduction of burning voltage is related to the tip-growth at least one in two electrode surfaces
Connection, thus reduces spacing between two electrodes, the spacing works to arc length.Now can be right by metewand
Influence in electrode geometry is characterized, and such as which current waveform produces influence and which electricity on tip-growth
Flow waveform and influence is produced on eletrode tip fusing.
Be advantageously improved scheme according to one, control device is designed for, according to measured value with can default desired value it
Between deviation select one of at least two current waveforms to be used to be controled in second interval.Can default target
Value is, for example, such value herein, and stable electric arc is realized in the value.It can propose herein, the default desired value of energy is in operation
Duration is traced based on the assessment to measured value.Preferably, control device can be designed in measured value and energy
Deviation between default desired value is selected when larger has the current waveform influenceed more by force to the configuration of eletrode tip, so that by
This can speed up again close to desired value.
In a favourable design, control device is together formed for that will measure with measurement apparatus and apparatus for evaluating
Closure regulating loop of the value regulation to desired value.Thus achieve the automatic stabilisation of the electric arc of discharge lamp and with the operation of convention
Mode drives discharge lamp.
Scheme is advantageously improved according to one, control device is designed for the default operational factor of energy depending on discharge lamp
Carry out predetermined target value.This running current or operation power that can for example depend on discharge lamp are realized.Especially in discharge lamp
Light modulation operation in (in the operation run power be lowered relative to rated power) propose, correspondingly adjust desired value.This
It can propose outside, the duration of operation up to now of lamp, in other words the namely aging of lamp quilt in predetermined target value
Consider.It can for example propose, desired value is determined in indicatrix.
Alternatively, the measure of desired value can be achieved in, i.e., measured value is in its current wave different by setting
Shape and it is analyzed in terms of the range of operation that can influence.Here, for example can together consider the stability of discharge lamp.By putting
In the case of the burning voltage of electric light provides measured value, for example, can be the default 70 watts desired value of brand-new discharge lamp.
The operation duration of the lamp, due to continuously using electrode, effect spacing between two electrodes becomes big, thus makes
Burning voltage is obtained systematically to rise.The rising can for example be determined based on a model or based on the assessment to measured value.
Therefore the electric discharge of replacing can be for example derived by the unexpected decline of the average lamp voltage detected after the restarting of device
Lamp.Therefore it can propose desired value being reset to initial value (default value).
According to another favourable design, the apparatus according to the invention includes being used to determine the temporal of measured value
The device of change, wherein, apparatus for evaluating is designed for determining metewand depending on the temporal change of measured value.Thus
For example also pace of change can be determined as evaluation criteria.
Scheme is advantageously improved according to one, the device changed on the time for determining measured value is designed in detection
Nonlinear time scale is used with when assessing measured value.The preferred method of change on minute is, determines
Need to last long untill measured value is with the default step change of energy into positive or negative sense.Duration detection pair
In with can the change that carries out of default stride be required, and duration detection can be by counter, especially with logarithm
The counter that time is assessed is provided.Therefore, measure, preferably voltage measurement one determination time point, then continuously
Ground is determined, if exceeded the stride determined, and its Counter is now always again started up, and thus, it is possible to continuously detect, is
No pace of change is changed, and especially whether symbol is changed.
According to another favourable design, metewand is related to the change intensity of the state of electrode geometry
Connection.Thus, current waveform can directly its on electrode geometry state hope influence ability in terms of screen.
According to another favourable design, in control device, at least corresponding pole of at least two current waveforms
Property trend with it is corresponding belonging to metewand together store in the table.Here, at least including corresponding polarity trend and phase
The project of metewand that should be affiliated is taxonomically arranged according to metewand in the table.It is derived from for selecting suitable electricity
Particularly simple access possibility for waveform is flowed, so as to realize the influence of the determination to electrode configuration.Therefore it can such as carry
Go out, following current waveform is stored in the borderline region of form, it causes the strong tip-growth on electrode, and in table
Another end of lattice stores following current waveform, and it causes the strong fusing of electrode.Can be with cloth in the intermediate region of form
Such current waveform is put, it or only significantly will not produce influence to the configuration of eletrode tip.
Scheme is advantageously improved according to one, control device is designed for, is surveyed again depending on the default more new signal of energy
Determine all metewands stored in the table and store it in form, especially regenerate form.Herein can be with
Propose, table content is stored in nonvolatile storage.More new signal can for example be designed in this wise, i.e., its with determination when
Between interval triggering to the measure again of the metewand of current waveform stored in the table.It can equally propose, i.e., be transported in lamp
The assessment again that the current waveform stored in the table is realized when reclosing every time of equipment after row interruption.
So-called commutating mode, that is, move towards to carry out dipole inversion relative to the corresponding polarity of each current waveform
The arrangement of (zero passage) is preset preferably in the framework of the manufacturing process of device, namely for example in the programming of control device,
The control device can exist in the form of so-called electric ballast (EVG).In operation, continuously metewand is carried out
Update.This can for example be performed by being updated during the operation of module with aturegularaintervals, preferably at 0.1 second to 30
Between minute.It is particularly preferred that the length at the interval depends on working as the measured value associated with the state parameter of discharge lamp
Preceding main pace of change is selected.In other words, in the case of big pace of change, select shorter time interval and
Vice versa.The interval of rule can be adjusted depending on pace of change herein, especially be reduced when pace of change increases
And/or improved when pace of change reduces.It is particularly preferred that rule interval possible regional change scope 10 seconds,
Between especially 30 seconds to 3 minutes, especially 10 minutes；This that is, it is preferred that scope optionally at 10 seconds to 10 points
Between clock, between 10 seconds to 3 minutes, between 30 seconds to 3 minutes, between 30 seconds to 10 minutes.
In addition it can be beneficial that being correspondingly the additional current unsatisfactory operation mould of test phase activation now
Formula, so as to update its assessment.Here, can set in the table, only volatibility or in nonvolatile manner storage assess system
The instantaneous value of several corresponding measure and/or the trend in time with corresponding history value (history) of metewand.Cause
This can for example be proposed, the new assessment of whole current waveform is triggered when suddenly great variety occurs for metewand.
According to another favourable design, control device is designed for, and in addition to storing metewand, is also stored
The Effective exponent for the form that the timeliness of especially metewand illustrates, and additionally performed according to Effective exponent for
The selection of the current waveform of two intervals.Advantage is derived from, i.e., all current waveforms all keep last state, so as to
It is enough to select most suitable current waveform for desired electrode influences.Therefore, it is contemplated that different scheme.One of them is can be with
Timeliness is set to illustrate, it characterizes such current waveform, and the current waveform is not used and provided for a long time to be used for
Corresponding is not newest metewand, can equally propose to exclude in special operational mode, especially to discharge lamp
The current waveform of determination when being dimmed.In addition, current waveform can adjust (acquiescence ripple as preset value current waveform
Shape), its for example it is determined that service condition under activate.
According to another favourable design, control device is designed for, and is by the assessment when determining metewand
Several history values counts to reduce the influence of the measured value containing interference.Herein it can propose, it is old, existed
Value is together calculated in new value, or carries out new registration and one or more old value is retained as history, for example
In the form of queue (Ringpuffer).In order to which an old value or multiple old values are calculated into new value, for example may be used
To propose, sliding average is formed, it is adopted the median of such as 20 values or will be newly worth with old value with the default ratio of energy
It is added each other.80 percent old value can for example be combined with 20 percent new value, thus, it is possible to realize LPF
The effect of device.Thus, it is possible to eliminate High-frequency Interference, such as glitch or similar.Thus reduction is enabled in particular to for storing
The requirement of the memory consumption of analog value.
According to another favourable design, control device be designed for after the first time operation of device and/or
After the operation again after closing before, especially in a device after replacing discharge lamp, relative at least two electric currents
Each metewand for belonging to corresponding in waveform determines a new value.It can propose herein, i.e., when the burning electricity in lamp
When there is obvious jump in pressure, control device identifies that lamp is replaced.In addition can propose can default initial method, example
Such as consider the metewand realized using used old lamp.Being not dependent on the assessment form of newest presence can carry
Go out, all current waveforms that can be used cyclically are tested and rebuild the form with metewand.
According to a favourable design, at least two current waveforms can pass through the nothing of the function as the time respectively
The envelope curve trend of symbol and in constant the first rectangular signal at least one quantity and at least one quantity constant the
The product description of two rectangular signals, wherein, the first rectangular signal have first foundation frequency and the second rectangular signal have with
The second different base frequency of first foundation frequency.It means that rectangular signal is with only unique in simplest situation
One rectangular foundation frequency, that is to say, that the polarity of the signal is correspondingly derived from, i.e., corresponding rectangular signal is further pushed away
Keep identical with moving two zero crossings.When being elapsed with the spacing of two zero crossings, wherein dutycycle is 50%, that is,
When being elapsed with the half period time, rectangular signal is directly inverted, in other words, with opposite symbol.Rectangular signal but
There can be the polarity of superposition, for example, be achieved in, i.e., the edge of from -1 to+1 or from+1 to -1 reversal is relative
Elapse, such as, for synchronous with the section transition part of colour wheel, be somebody's turn to do in by the Cycle Length of corresponding rectangular foundation predetermined frequency
Colour wheel is generally used in DLP projector.Rectangular signal can be for example produced, its (accurate) polarity corresponds to affiliated basis
1/3rd or a quarter of frequency.
Scheme is advantageously improved according to one, the corresponding functional relation of at least two current waveforms can be by correspondingly true
Fixed first rectangular signal is moved towards relative to envelope curve on the very first time deviation and by correspondingly determining the second rectangle
Signal is described relative to the second temporal deviation that envelope curve is moved towards.
According to a particularly advantageous improvement project, at least one first rectangular signal and at least one second rectangular signal
In one and describe it and be stored in control relative to the parameter group of corresponding temporal relation that envelope curve is moved towards
In device, wherein, control device, which is designed for being produced according to the parameter group of storage, characterizes the commutation mould that corresponding polarity is moved towards
Formula.Envelope curve trend for example can be that customer specifically presets in the case of it can apply the device in DLP projector, especially
It is based on the colour wheel used in the shadow casting technique, wherein going out reference point defined in the time course of the envelope curve.Root
Illustrate the time deviation and the time deviation for the second rectangular signal for the first rectangular signal according to the reference point of this definition.Cause
This, corresponding current waveform can together be defined with first foundation frequency and the explanation of the second base frequency.Exceed when being provided with
When two rectangular signals carry out resultant current waveform, more parameters pair are supplemented in the corresponding way.Generally from high current to low
The transition position of electric current realizes the reference point determined on envelope curve.
According to another favourable design, control device is designed to provide for the assessment system of at least two current waveforms
The default bandwidth of several energy and in the case of the metewand of at least two current waveforms is corrected (Angleichung)
The other current waveform moved towards with polarity is produced, the polarity is moved towards not at least two current waves provided up to now
Exist in shape.It can be proposed in this kind of situation, based on the existing parameter group for producing current waveform, for example, use
One and second in the case of base frequency, new current waveform is produced when changing while at least one time deviation.It can replace
What is changed is to propose, i.e., at least one in two base frequencies is matched.
Such possibility is produced as other alternative, substitution adds other current waveform, passes through new electricity
There is current waveform in stream waveform, especially in such cases, plurality of current waveform has approximately the same to replace
Metewand.Identical principle can also abandoned to use during default bandwidth, such as when current waveform is in eletrode tip
When applying extremely strong influence on configuration, such as, by quick tip-growth, it arrived the burning voltage passage of discharge lamp
In low region, or eletrode tip is completely melt, this can have negative influence to arc stability.
Preferred scope for the first frequency is more and more excellent with the order of rising in 5 hertz to 500 hertz of scope
Choosing is minimum 15 hertz, and 40 hertz, 50 hertz, 60 hertz, as lower boundary, are not dependent on this, with the order of rising increasingly
Preferably 500 hertz, 350 hertz, 250 hertz, 180 hertz are used as coboundary.Preferred scope for the second frequency is 0
Hertz is into 500 hertz of scope.Minimum 0.1 hertz, 1 hertz, 5 hertz, 10 hertz is increasingly preferably with the order of rising
Hereby as the lower boundary of the preferred scope for second frequency, this is not dependent on, with the order of rising more and more advantageously 500
Hertz, 350 hertz, 250 hertz, 180 hertz, 150 hertz, 120 hertz, 90 hertz are used as the preferred scope for second frequency
Coboundary.It can especially use herein close to 0 hertz, but the very small frequency in the region different from 0 hertz.
It is preferred that mode in select fixed relationship between two frequencies, such as first frequency can be twice of second frequency, four
Times or six times.
In addition, the present invention is from a kind of method for being used to especially run discharge lamp for projection purpose using alternating current,
The discharge lamp includes first electrode and second electrode, and this method provides at least two current waves for being controlled to discharge lamp
Shape, wherein, corresponding current waveform can be by being relevant to the corresponding envelope curve through the lamp current to be controlled of discharge lamp
Trend and being walked by the corresponding polarity of the flow direction for being relevant to lamp current to be controlled is always described.In addition this method bag
Include and determine the measured value associated with the state parameter of discharge lamp, the measured value is adapted for carrying out to first electrode and/or the second electricity
The deduction of the state of the electrode geometry of pole.
According to the present invention, this method is further designed by determining metewand, and wherein the metewand is with utilizing extremely
The change of the electrode geometry of first electrode and/or second electrode when a pair of discharge lamps of few two current waveforms are controled
Change associated, be the metewand that determines of one of at least two current waveforms relative to the electricity belonging at least two current waveforms
Stream waveform is stored, and in the first interval, by means of the metewand that is stored for this in order to follow the first operation
One of at least two current waveforms of selection are controled in second interval at interval.
The advantages and features and design described for the apparatus according to the invention are equally applicable to corresponding method
And vice versa.Therefore, the feature for device can propose to be used for corresponding method characteristic and vice versa.
Before in the description described feature and combinations of features and it is next described in the description of the drawings and/or
Separately shown feature and combinations of features can be not merely applied in the combination accordingly provided in accompanying drawing, and can be applied
In other combination or it is used alone, without departing from protection scope of the present invention.Therefore such design also by
It is considered as and is disclosed by the present invention, it is not detailed in the accompanying drawings shows or illustrate, but can pass through single combinations of features
It was described to derive or produce in embodiment.
Additional advantage and feature are provided according to reference next to accompanying drawing to the description of embodiment.In figure, identical ginseng
Examine label and represent identical feature and function.
Brief description of the drawings
Shown in figure：
Fig. 1 shows a preferred design of the method according to the invention in simplified schematic diagram,
Fig. 2 shows the time trend of the measured value associated with the state parameter of discharge lamp in simplified schematic diagram,
Fig. 3 a-d show the first method for determining current waveform in simplified schematic diagram,
Fig. 4 a-d show the second method for determining current waveform in simplified schematic diagram.
Embodiment
Include the control device for being used to control discharge lamp according to the projection arrangement of the present invention.The control device is designed
For providing at least two electric current wave energies for being used for being controled to discharge lamp.Electric current wave energy is moved towards by envelope curve herein
(being next also described as envelope information (such as associated with current amplitude)) and polarity information (commutating mode) are collectively formed.No
Same commutating mode can be combined with identical envelope information.Envelope information is for example described by intensity vector.Commutating mode
Or determined again by commutation vector, by single rectangular signal or by interchangeable describe.Maintain using at least
Two different commutating modes.
The measurement apparatus of projection arrangement is used to determine the measured value associated with the state parameter of discharge lamp, wherein, by surveying
Value can be inferred that the electrode on first and/or second electrode burns and/or electrode-tip growth to strile-bacing.Because electrode
Spacing (length that the electric arc that discharge lamp burns between two eletrode tips is given by the spacing) can not directly pass through
The control device of projection arrangement, such as electric ballast are determined, therefore in order to measure indirectly in first electrode and second electrode
Between spacing and modulating voltage on discharge lamp can be used as measured value.So-called the moon is not only realized in the modulating voltage
Pole drops, anode voltage and the voltage drop in actual electrical discharge arc.Cathode drop and anode voltage when electric current is identical not
Electrode spacing is approx depended on, the voltage drop in electrical discharge arc is approximately proportional to the spacing well.Modulating voltage is therefore
It can be used as the regulation parameter for electrode spacing.Tip-growth on electrode causes voltage to reduce, fusing increase.
The rate of change of voltage, that is, can be in default measurement interval voltage initial value and terminal value between difference divided by can preset
Measurement interval width, be for pointedly influence eletrode tip in terms of each moving model validity mark
It is accurate.
For a preferred design of the method according to the invention implemented on the device for driving discharge lamp
Figure 1 illustrates：Implement to adjust back for adjusting the closure of spacing between the first electrode and the second electrode by this method
Road.This method is in step S0Start, wherein, started with cyclic variable i=1.When device ran before and
When being again switched on after one operation interval, cyclic variable i can adopt a value in a preferred manner, i.e., cyclic variable is at it
The value adopted at the end of the preceding cycle of operation.In step S1In, projection arrangement utilizes commutating mode KiOperation.In step S2In,
Perform the measurement to measured value X.Measurement to measured value X can be realized continuously or in the interrupted energy default time herein
Point is realized.Such measured value detection for example can be real by the microprocessor with integrated analog-digital converter/microcontroller
It is existing.
During further, measured value X is for example adjusted by modulating voltage (burning voltage U).
It can propose to be filtered measurement signal to eliminate interference, the wherein interference for example passes through the base of voltage signal
Plinth noise, the voltage change caused by the starting point of the change of electrical discharge arc or due to lamp caused by necessary power adjusting
The change of electric current causes.
According to the measured value of acquisition, in third step S3Middle determination rate of change dX/dt.It can for example preset and default can become
Change level dX and determined by counter, entered from the default start time point of energy up to there is measured value X with changing a grade dX
Lasted long untill row change.The change can realize in the two directions herein, that is, in positively and negatively (i.e.
Measured value X increase or measured value X reduction) realize.
The counter assessed with nonlinear time scale can be used in order to be estimated to rate of change dX/dt.For
This can especially use logarithmic scale.
Depending on the rate of change dX/dt of measure, with commutating mode KiTemporal change based on measured value X during operation
Change and produce assessed value Yi, which characterizes in the first electrode when being run with the commutating mode and/or second electrode to burning of strile-bacing
Or the degree of growth.Determining assessed value YiWhen can introduce other factor, for example whether utilizing the commutating mode energy
Enough continuous trends realized without jump and/or the dull trend without turning point.The assessed value Y of measureiWith commutating mode KiOne
Assessed with being stored in form Tab.Assessing form Tab can so arrange, i.e., each project corresponds to assessed value YiClassification
Ground is arranged.In addition, assess form Tab also has a project relative to each element, it illustrates, affiliated commutating mode Ki
When assessed for the last time, that is, comprising on assessed value YiTimeliness information.
In the 5th step S5In, from the measurement parameter X associated with electrode spacing and desired value XZBetween difference calculate survey
Measure deviation delta X.The actual value of the electrode spacing of discharge lamp is with rated value relatively therefore based on the measurement associated with electrode spacing
The indirect assessment of value, the measured value can be detected in the operation of projection arrangement.Therefore based on model, a so-called observation
Person can realize a kind of detection.Model parameter herein can be by performing to for the type used in a device before
The systematic survey of discharge lamp statistically determine, the method for example projected using electric arc is being applied to lamp in the method
On voltage and the electrical discharge arc between the first electrode and second electrode of discharge lamp arc length between relation drawing
It is measured in the case of entering the discharge current flowed through discharge lamp, the discharge current can equally be determined in control device.
In order to determine electrode spacing X or its deviation between default rated value, therefore, it is possible to by the voltage on discharge lamp and
The electric current or voltage on discharge lamp that are flowed through discharge lamp and it is conveyed to based on the power of discharge lamp.
Depending on electrode spacing and the default desired value X of energyZThe deviation determined, in the 6th step S6In realize and take
Certainly at least one the measured deviation Δ X and assessed value Y that provides in form Tab is assessed1, Y2To YNTo select new commutation
Pattern Ki.In addition, for the new commutating mode K of measurei, the measured value X associated with electrode spacing is in itself and/or time t energy
It is enough to be considered.Therefore for new commutating mode KiFor for example draw i=f (t, X, Δ X, Y1, Y2…,YN)。
It has selected new commutating mode KiAfterwards, first step S is jumped back to1In, have now with the finger accordingly updated
Number i commutating mode Ki。
Substitute commutating mode Ki(i=1 ... N), naturally it is also possible to complete current waveform W is stored in form Tabi(i=
1 ... M), especially multigroup current waveform, then it be correspondingly optionally activated to be selected.In this kind of situation
In, perhaps by current waveform W in form Tab is assessed1, W2... WMTo replace commutating mode K1, K2... KN.Here, N can be with
Equal to M, for example, moving towards I using identical envelope curve for all current waveformsLIn the case of.By all commutation moulds
Formula Ki(i=1 ... N) and the envelope curve I of all storagesLDuring combination, the quantity for the current waveform of generation is applicable WMM=N*
L。
Fig. 2 shows the functional mode of this method in the example of the curve 21 simplifiedly shown, and wherein the curve is by list
Individual curve section 21a, 21b, 21c, 21d, 21e are constituted, and these curve sections represent trends of the measured value X on time t.In figure
In the chart shown in 2, time t is drawn on the horizontal scale, and it has three time points being emphasised, that is, during the first switching
Between point T1, the second switching time point T2 and the 3rd switching time point T3.The voltage U on discharge lamp is depicted on the vertical scale,
It is associated with the spacing of the electrode of enlarger lamp as measured value X representative.Be this simply it is assumed that i.e. voltage U correspond to survey
Value
It is desired value Z and lower boundary UG and coboundary OG on the vertical scale.Desired value Z is located at lower boundary UG and upper herein
Between the OG of border.In the very first time section 22a untill extending up to the first switching time point T1, voltage U trend is followed
The first curve section 21a with negative slope.From the starting voltage on the OG of coboundary, with appointing in electrode spacing
Slope -0.5 in meaning unit (arbitrary units) is reduced first in desired value Z direction.In very first time section
In the going further to of 22a, less than desired value Z and next lower boundary UG is reached in the first switching time point T1.
In the first switching time point T1, from the first commutating mode K1It is switched to the second commutating mode K2, thus with arbitrary
Unit provides slopes+2 of the second curve section 21b in the second time section 22b.Thus, the point on the electrode of discharge lamp
Before end after growth (thus which reducing voltage U between two electrodes), thus tip cuts to melt back first
Change the voltage U being applied in the second time section 22b between time point T1 and the second switching time point T2 on lamp continuous herein
Ground is improved, and wherein voltage U reaches coboundary OG value in the second switching time point T2.
In the second switching time point T2, the first commutating mode K is connected back now1, thus obtain bent for the 3rd again
- 0.5 slope of line section 21c arbitrary unit, the 3rd curve section is connected to after the second switching time point T2.
Utilizing the first commutating mode K1During operation, occur voltage now and change nyctitropic conversion.This can by
Change in electrode geometry is derived.Therefore, the 4th curve section 21d is connected with after the 3rd curve section 21c,
It is characterized in that the rising of voltage.Identified in the 3rd switching time point T3 for K1Voltage change direction conversion.With
Correspondingly terminated with the 3rd time section 22c the 4th time section 22d in the 3rd switching time point T3.It is latter linked
Realized in 5th time section 22e and transform to commutating mode K4, it causes voltage to reduce, and voltage reduction has arbitrary unit
- 0.06 rank gradient.The 5th affiliated curve section is identified with 21e.
To sum up, it is next graphically showing in fig. 2, by curve section 21a, 21b, 21c, 21d, what 21e was constituted
Curve 21 is shown in the form of compact and form, wherein each table row shows the table in time point T1, T2 and T3
Lattice Tab (N=4) state and the action provided at the time point：
Therefore it is related to a kind of diagram of the compression of the form Tab at different time points.Additional is in row " action "
Give, what there occurs at corresponding time point.
Therefore a kind of regulating loop is provided by control device, can be by first electrode and/or second electrode using it
Electrode geometry keep state be maintained in predetermined region.
Next show for describing current waveform, in particular for the alternative of resultant current waveform.Control dress
Put herein designed for producing the electric current wave energy for being used for being controled to discharge lamp.Electric current wave energy is herein by envelope information
(current amplitude) and polarity information (commutating mode) are constituted.Envelope information can pass through intensity vector description or as follows
I is moved towards by envelope curve like thatLDescription.Commutating mode KNPass through multiple rectangular signal RiPreset from the product of different frequencies.
Rectangular signal passes through its frequency f hereinj, the first rectangular signal relative to envelope curve phaseAnd remaining rectangular signal
Relative to the phase of the first rectangular signalTo describe.
For the design in such as 3LCD projection arrangements (liquid crystal display) or 3 chip DLP (digital light processing)
In projection arrangement particular case current waveform synthesis with reference next to Fig. 3 a, 3b, 3c, described in 3d.Envelope information
Constant envelope curve I on time t is passed through according to Fig. 3 aLDescription.Unit 1 is arbitrarily selected and can characterized herein
100% operation, it for example characterizes the operation of the rated power of discharge lamp.Fig. 3 b show the first rectangular signal R1Time walk
To Fig. 3 c show the second rectangular signal R2Time trend.First rectangular signal R1With the second rectangular signal R2The two rectangles
Signal is no average value and correspondingly has 50% dutycycle.In addition the two rectangular signals only correspondingly have only
One rectangular frequency, that is to say, that two rectangular signal R1, R2In each correspondingly just terminate the half period time
Figure shift afterwards.Therefore, in corresponding rectangular signal R1And R2Two zero crossings between spacing in the half period time
It is correspondingly constant, i.e. half period time first frequency f1Or second frequency f2It is half reciprocal.Rectangular signal R1, R2's
Two frequency f1And f2Can be with unrestricted choice.First frequency f1Preferred region extend to 500 hertz, second frequency from 5 hertz
f2Favored area extend to 500 hertz from 0 hertz.Envelope curve moves towards IL, the first rectangular signal R1With the second rectangular signal R2
Product shown in Fig. 3 d.Produce in this way, referred to as current waveform WMSignal although its have intricately show
Feature out can also be described by simple coefficient sets, that is, the rectangular signal R being based on1, R2Frequency f1, f2And
Accordingly describing to move towards I relative to envelope curve beforeLPhase, thus also give two rectangular signal R1And R2Phase
To phase.
In the example shown, the first rectangular signal R1With first frequency f1=130 hertz, the second rectangular signal R2Tool
There is second frequency f2=60 hertz.Thus provide about 0.46 f2With f1Frequency ratio.Phase shift or two rectangular signals it
Between relative time deviation be about 1.28 milliseconds.Because envelope curve is constant in time, therefore relative to envelope
The time deviation of curve can be selected arbitrarily in principle.
Suitable for 1 chip DLP projector (digital light processing) current waveform relative to retouching the current waveform shown before
It must is fulfilled for other condition.Need herein accurately synchronous with usually used colour wheel.The colour wheel is in the light path of projecting apparatus
Rotate and with multiple color sections, it corresponds to different colors and can correspondingly have different length, also
It is to say that each color section can correspondingly include 360 ° altogether of the default angle share of energy.Thus project in video image
Time upper color different from each other.Modern DLP projector provides a kind of adjustment possibility in addition, and it is realized in each color
Lamp current intensity in color section is separately configured.Thus for example can be by increasing higher bright to realize in white section
Degree realizes that more preferable color is exported by correspondingly each color coordinated with each other.Typical mode is, will be according to the present invention
Device be applied to customer in projection arrangement, that is, to be that different brightness groups in each section are defined more for such as manufacturer
Individual, such as three to seven current curves (envelope information for being relevant to current amplitude), and store it in the non-of projection arrangement
In volatile memory, majority is eeprom memory.
Commutation advantageously is performed at the transition part of each color section of colour wheel, is commutated at so-called spoke.It is logical
The brightness interference that the commutation of overcurrent is determined will not now be perceived by user, because the colour mixture produced at spoke is either way
It can be blocked by projecting apparatus such as improving white light share.
Fig. 4 a are illustrated envelope curve according to another implementation for this and move towards IL, it is represented in each section of colour wheel
Expection brightness amplitude trend.Show that envelope curve moves towards I on the example of the colour wheel with six sectionsL, wherein
On the premise of colour wheel has constant rotary speed, that is, on the premise of revolution is constant, the section duration or corresponding
Angle share designed according to collecting for ensuing tabular：
In Fig. 4 a, 4b, 4c, the vertical dotted line in 4d marked section boundaries accordingly.
Fig. 4 b show the first rectangular signal R1, the cycle duration difference very little of wherein each pulse.Pulse is utilized herein
To describe the first rectangular signal R1Following respective segments, it is in the first zero crossing (such as G- ＞ R) and the 3rd zero crossing is (for example
Y- ＞ W) between extend, wherein between the first zero crossing and the second zero crossing as unique zero crossing the second zero crossing
(such as C- ＞ B) place realizes the first rectangular signal R1Reversal.That is, with the embodiment according to Fig. 3 b before
Compare, dutycycle is herein and disunity is 50%, but in the situation in view of the default section of colour wheel by DLP projector
Under, the first rectangular signal R shown in fig. 4b1Zero crossing to a certain extent with the pre- of the limited quantity with zero crossing
If the preformed patterns of position carry out moulding.In other words, corresponding rectangle width is therefore not only on negative sense (- 1) but also in forward direction
(1) non-isometric scanning is depended on to round up or round downwards.
It is equally applicable to the second rectangular signal R according to the embodiment shown in Fig. 4 c2.For second rectangular signal
R2For, the cycle duration of each pulse is also correspondingly slightly different.The rotation of colour wheel therefore with section white W, cyan C, indigo plant
Color B, green G, red R and yellow Y process are associated, that is to say, that the affiliated duration by the revolutions of DLP colour wheels with
(360 °) links of complete rotation of colour wheel.
I is moved towards for envelope curveL, the first rectangular signal R1With the second rectangular signal R2Product for therefore obtain root
According to the current waveform W of Fig. 4 d diagramMCurve trend.
As shown by before, the first square of the embodiment for can be used in DLP projection applications according to this
Shape signal R1With the second rectangular signal R2For be also suitable, two rectangular signals are no average value.
Due to limiting the possible zero crossing on default commutation position, the frequency of rectangular signal in this kind of situation
Instantaneous value also with average value f1Or f2Change.For the example shown in figs. 4 b and 4 c, the average value is f1=45
Hertz and f2=25.7 hertz.The ratio of two frequencies is 0.57.The temporal deviation of rectangular signal is in this example：
I is moved towards in envelope curveLWith the first rectangular signal R1Between be 0 microsecond, and in the first rectangular signal R1With the second rectangular signal
R2Between be about 3.2 microseconds.
Correspondingly this is applied to the second rectangular signal R2。
It is used to synthesize commutating mode K using proposed methodiWhen, especially combining the default intensity vector of energy
In the case of, the intensity vector characterizes envelope curve ILConstant by section intensity trend, can in a particularly simple way and
Method produces current waveform WM, it is also met in terms of the current waveform without average value in suitably selected frequency and phase
Requirement.
Unrelated with the application herein proposed using the present invention, the synthetic method for current waveform can be uncorrelated
Ground, which is installed, exchanges electrically driven (operated) various forms of discharge lamps with being used in, and is therefore for example also supplied as in official's case number
The alternative solution for being used to change the method for commutation vector proposed in 10 2,014 220 275.2 follow-up published application, this is changed
Corresponding current waveform is characterized to vector.
These embodiments are merely illustrative the present invention and do not produce limitation to the present invention.Especially for synthesis electricity
The quantity of rectangle function also has the quantity for implementing the current waveform that the present invention is maintained arbitrarily to become used in stream waveform
Change, equally unrestricted to be, such as corresponding parameter group or signal are stored in or are stored according to the corresponding of the present invention
Device in.
Therefore pointed out before, how to for exchanging ultra-high pressure discharge lamp electrically driven (operated), with two electrodes, especially
It is that the type of drive of lamp for projection arrangement is optimized in its type of drive.
List of reference characters
S0Start
S1First step
S2Second step
S3Third step
S4Four steps
S55th step
S66th step
Tab assesses form
I indexes
W1First current waveform
W2Second current waveform
K1First commutating mode
K2Second commutating mode
KNN commutating modes
Y1First metewand
Y2Second metewand
YNN metewands
ILEnvelope curve is moved towards
X measured values
DX/dt rates of change
DX changes level
The t times
Δ X measured value deviations
XZDesired value
U ignition voltages
OG coboundaries
Z desired values
UG lower boundaries
T1 the first switching time points
T2 the second switching time points
T3 the 3rd switching time points
The curve sections of 21a first
The curved portions of 21b second
The curve sections of 21c the 3rd
The curve sections of 21d the 4th
The curve sections of 21e the 5th
22a very first time sections
22b the second time sections
The time sections of 22c the 3rd
The time sections of 22d the 4th
The time sections of 22e the 5th
I envelope curves are moved towards
R1First rectangular signal
R2First rectangular signal
WMCurrent waveform, universal.
Claims (17)
1. a kind of device for being used to especially run discharge lamp for projection purpose, including：
At least one can exchange electrically driven (operated) discharge lamp, and the discharge lamp has first electrode and second electrode；And
Control device, the control device is designed as providing at least two current waveforms for being used for being controlled the discharge lamp
(W1, W2), wherein, the corresponding current waveform (W1, W2) can be by being relevant to the lamp electricity to be controlled through the discharge lamp
The corresponding envelope curve trend (I of streamL) and by be relevant to the lamp current to be controlled flow direction it is corresponding
Polarity moves towards (K1, K2) describe,
Measurement apparatus, for determining the measured value (X) associated with the state parameter of the discharge lamp, the measured value is suitable to real
Now to the deduction of the first electrode and/or the state of the electrode geometry of the second electrode,
Characterized in that,
Determine metewand (Y1, Y2) apparatus for evaluating, the metewand is with utilizing current waveform (W described at least two1,
W2) in the first electrode and/or the second electrode of the current waveform when being controled to the discharge lamp institute
Stating the change of electrode geometry is associated,
Wherein, the control device will be designed for that will be current waveform (W described at least two1, W2) in one current wave
Metewand (the Y that shape is determined1, Y2) relative to current waveform (W described at least two1, W2) affiliated current waveform storage,
And
In the first interval (22a), by means of the metewand (Y stored for this1, Y2) in order to follow the first fortune
Carry out controling current waveform (W described in selection at least two in the second interval (22b) of between-line spacing1, W2One of).
2. device according to claim 1, it is characterised in that the control device is designed for, in order to described second
Controled in interval and according to the measured value (X) with can default desired value (XZ) between deviation (Δ X) selection
At least two current waveforms (the W1, W2One of).
3. device according to claim 2, it is characterised in that the control device and the measurement apparatus and the assessment
Device is together formed for the measured value (X) regulation to be arrived into the desired value (XZ) closure regulating loop.
4. the device according to Claims 2 or 3, it is characterised in that the control device is designed for depending on described put
The default operational factor of energy of electric light makes a reservation for the desired value (XZ)。
5. device according to any one of the preceding claims, it is characterised in that with for determining the measured value (X)
Temporal change device, wherein, the apparatus for evaluating is designed for described temporal depending on the measured value
Change to determine the metewand (Y1, Y2)。
6. device according to claim 5, it is characterised in that described to be used to determine change on the measured value (X) time
The device of change is designed for using nonlinear time scale when detecting and assessing the measured value.
7. device according to any one of the preceding claims, it is characterised in that the metewand (Y1, Y2) with it is described
The change intensity of the state of electrode geometry is associated.
8. device according to any one of the preceding claims, it is characterised in that in the control device, at least two
Current waveform (the W1, W2) at least corresponding polarity trend (K1, K2) and the corresponding affiliated metewand (Y1,
Y2) be together stored in form (Tab), wherein, at least including the corresponding polarity trend (K1, K2) and it is corresponding belonging to
The preferred project of the metewand is taxonomically arranged according to the metewand in the table.
9. device according to claim 8, it is characterised in that the control device is designed for, all in the form
The metewand of middle storage depends on the default more new signal of energy to redeterminate and store in the table, especially weighs
Newly produce the form.
10. device according to any one of the preceding claims, it is characterised in that the control device is designed for, and is removed
Storage metewand (the Y1, Y2) outside, also store the validity for the form that the timeliness of especially described metewand illustrates
Index, and the current waveform (W for second interval is additionally selected according to the Effective exponent1,
W2)。
11. device according to any one of the preceding claims, it is characterised in that the control device is designed for,
Determine the metewand (Y1, Y2) when the history value of the metewand is counted to reduce the measurement containing interference
It is worth the influence of (X).
12. device according to any one of the preceding claims, it is characterised in that the control device is designed for,
After the first time operation of described device and/or after the operation again after closing before, especially in said device
After changing the discharge lamp, relative to current waveform (W described at least two1, W2) in each current waveform belonging to corresponding
The metewand (Y1, Y2) determine a new value.
13. device according to any one of the preceding claims, it is characterised in that current waveform (W described at least two1,
W2) (I can be moved towards by the signless envelope curve of the function as the time respectivelyL) with least one quantity on it is constant
First rectangular signal (R1) and at least one quantity on constant the second rectangular signal (R2) product description, wherein, described first
Rectangular signal has first foundation frequency (f1) and second rectangular signal have it is different from the first foundation frequency
Second base frequency (f2)。
14. device according to claim 13, it is characterised in that current waveform (W described at least two1, W2) it is corresponding
Functional relation can be by correspondingly determining the first rectangular signal (R1) move towards (I relative to the envelope curveL) first when
Between on deviation and by correspondingly determining the second rectangular signal (R2) move towards (I relative to the envelope curveL)
Two temporal deviations are described.
15. the device according to claim 13 or 14, it is characterised in that at least one described first rectangular signal (R1) and
At least one described second rectangular signal (R2) in a rectangular signal and the rectangular signal is described relative to the envelope
Curve moves towards (IL) the parameter group of corresponding temporal relation be stored in the control device, wherein, the control
Device, which is designed for being produced according to the parameter group of storage, characterizes the commutating mode (K that the corresponding polarity is moved towards1, K2)。
16. device according to any one of the preceding claims, it is characterised in that the control device is designed to provide for
Current waveform (W described at least two1, W2) the metewand (Y1, Y2) the default bandwidth of energy and at least two institutes
State current waveform (W1, W2) the metewand (Y1, Y2) be corrected in the case of produce it is other with polarization trend
Current waveform, the polarization is moved towards not in current waveform (W described at least two provided up to now1, W2) middle presence.
17. a kind of method for being used to especially run discharge lamp for projection purpose using alternating current, the discharge lamp includes first
Electrode and second electrode, this method have steps of
At least two current waveform (the W for being controlled to the discharge lamp are provided1, W2), wherein, the corresponding electric current
Waveform (W1, W2) (I can be moved towards by the corresponding envelope curve being relevant to through the lamp current to be controlled of the discharge lampL)
And (K is moved towards by the corresponding polarity for the flow direction for being relevant to the lamp current to be controlled1, K2) describe,
The measured value (X) associated with the state parameter of the discharge lamp is determined, the measured value is adapted for carrying out to described first
The deduction of the state of the electrode geometry of electrode and/or the second electrode,
Characterized in that,
Determine metewand (Y1, Y2), the metewand is with utilizing current waveform (W described at least two1, W2) in one
The geometric electrode shape of the first electrode and/or the second electrode when current waveform is controled to the discharge lamp
The change of shape is associated,
Relative to current waveform (W described at least two1, W2) affiliated current waveform be stored as current wave described at least two
Shape (W1, W2) in one current waveform determine metewand (Y1, Y2), and
In the first interval (22a), by means of the metewand (Y stored for this1, Y2) in order to follow described
Current waveform (W described in selection at least two is controled in the second interval (22b) of one interval1, W2One of).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016105490.9 | 2016-03-23 | ||
| DE102016105490.9A DE102016105490A1 (en) | 2016-03-23 | 2016-03-23 | Apparatus and method for operating a discharge lamp, in particular for projection purposes |
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| Publication Number | Publication Date |
|---|---|
| CN107231740A true CN107231740A (en) | 2017-10-03 |
| CN107231740B CN107231740B (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710176309.XA Active CN107231740B (en) | 2016-03-23 | 2017-03-22 | The device and method for running discharge lamp |
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| JP (1) | JP6261792B2 (en) |
| CN (1) | CN107231740B (en) |
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| JP6972825B2 (en) * | 2017-09-20 | 2021-11-24 | セイコーエプソン株式会社 | Lamp drive device, light source device, projector, and lamp drive method |
| JP6939523B2 (en) * | 2017-12-25 | 2021-09-22 | セイコーエプソン株式会社 | Discharge light drive device, light source device, projector, and discharge light drive method |
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| CN101184358A (en) * | 2006-11-14 | 2008-05-21 | 优志旺电机株式会社 | Discharge lamp lighting device and projector |
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| CN102197711A (en) * | 2008-10-27 | 2011-09-21 | 皇家飞利浦电子股份有限公司 | Method of driving a short-arc discharge lamp |
| CN102301828A (en) * | 2009-01-27 | 2011-12-28 | 奥斯兰姆有限公司 | Method and electronic operating device for operating a gas discharge lamp and projector |
| CN104470166A (en) * | 2013-09-18 | 2015-03-25 | 欧司朗有限公司 | Method for determining a predetermined waveform of a lamp current and projection device |
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| JP5013108B2 (en) * | 2008-03-24 | 2012-08-29 | セイコーエプソン株式会社 | Discharge lamp lighting device, control method therefor, and projector |
| JP5601439B2 (en) * | 2009-02-09 | 2014-10-08 | セイコーエプソン株式会社 | Discharge lamp lighting device, discharge lamp driving method, and projector |
| JP4992994B2 (en) * | 2009-12-01 | 2012-08-08 | ウシオ電機株式会社 | High pressure discharge lamp lighting device and projector |
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- 2017-03-22 CN CN201710176309.XA patent/CN107231740B/en active Active
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| CN101018440A (en) * | 2006-02-10 | 2007-08-15 | 精工爱普生株式会社 | Discharge lamp lighting device and projector |
| CN101184358A (en) * | 2006-11-14 | 2008-05-21 | 优志旺电机株式会社 | Discharge lamp lighting device and projector |
| CN101690412A (en) * | 2007-07-10 | 2010-03-31 | 皇家飞利浦电子股份有限公司 | Method and driving unit for driving a gas-discharge lamp |
| CN101646294A (en) * | 2008-08-07 | 2010-02-10 | 精工爱普生株式会社 | Driving device and driving method for discharge lamp, light source device, and image display apparatus |
| CN102197711A (en) * | 2008-10-27 | 2011-09-21 | 皇家飞利浦电子股份有限公司 | Method of driving a short-arc discharge lamp |
| CN102301828A (en) * | 2009-01-27 | 2011-12-28 | 奥斯兰姆有限公司 | Method and electronic operating device for operating a gas discharge lamp and projector |
| CN104470166A (en) * | 2013-09-18 | 2015-03-25 | 欧司朗有限公司 | Method for determining a predetermined waveform of a lamp current and projection device |
Also Published As
| Publication number | Publication date |
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| JP2017183282A (en) | 2017-10-05 |
| JP6261792B2 (en) | 2018-01-17 |
| DE102016105490A1 (en) | 2017-09-28 |
| CN107231740B (en) | 2019-06-14 |
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