CN106993368B - Xenon lamp pre-burning method and circuit and IPL (Internet protocol labeling) equipment - Google Patents
Xenon lamp pre-burning method and circuit and IPL (Internet protocol labeling) equipment Download PDFInfo
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- CN106993368B CN106993368B CN201710261867.6A CN201710261867A CN106993368B CN 106993368 B CN106993368 B CN 106993368B CN 201710261867 A CN201710261867 A CN 201710261867A CN 106993368 B CN106993368 B CN 106993368B
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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
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- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
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Abstract
The application provides a xenon lamp precombustion method, circuit and IPL equipment, and the circuit includes: the output end of the rectification circuit is connected with two ends of the xenon lamp; the frequency converter is configured to: when a pre-burning signal of the xenon lamp is acquired, a preset direct-current voltage with a first preset value is applied to two ends of the xenon lamp through a first output end, a second output end and a rectification circuit of a transformer circuit, a preset alternating voltage is applied to a cavity core of a good conductor with local sealing property through a third output end and a fourth output end of the transformer circuit, the frequency of the preset alternating voltage is a first preset frequency, and the highest peak value is a first preset peak value; and when the pre-burning stopping signal is obtained, switching the preset direct current voltage to a second voltage value for maintaining the conduction of the xenon lamp, and stopping applying the preset alternating voltage to the cavity core of the conductor with good local sealing property where the xenon lamp is located. The service life of the xenon lamp is prolonged.
Description
Technical Field
The invention relates to the technical field of lighting equipment, in particular to a xenon lamp pre-burning method and circuit for realizing efficient pre-burning of a xenon lamp and IPL (internet protocol label) equipment.
Background
The pulse xenon lamp has the characteristics of specific spectral line width, strong brightness, high electro-optical efficiency, long service life and negative resistance, so the pulse xenon lamp is widely applied to beauty medical equipment such as an IPL depilator and an IPL skin tendering instrument, and laser pumping equipment such as a laser inner carving machine, a laser welding machine and a laser beauty machine.
In general IPL photon beauty medical equipment, the working state of a pulse xenon lamp generally comprises two states of glow discharge and arc discharge, in glow discharge pre-burning, the pulse xenon lamp is in a high resistance state when not conducted, the internal resistance of the xenon lamp is infinite, the xenon lamp is exposed in an insulator and needs to supply a breakdown voltage of more than 15000V to successfully and effectively pre-burn, or the xenon lamp is placed in an unsealed conductor and needs to supply a breakdown voltage of more than 7000V to successfully and effectively pre-burn, the breakdown time is more than 10ms, at the moment, the pulse xenon lamp is in a low resistance state, the internal resistance of the xenon lamp is less than 1K omega, and the glow discharge of 180mA can be maintained only by about 100V.
In the prior art, the pre-burning of the xenon lamp is usually realized through a constant high-voltage increasing gamma effect or a pulse high-voltage increasing α effect, so that the breakover voltage of the xenon lamp conduction is very high, and the damage of cathode sputtering of the xenon lamp is increased due to the high-voltage triggering pre-burning to shorten the service life of the xenon lamp, therefore, how to reduce the breakdown voltage of the xenon lamp in the pre-burning process to prolong the service life of the xenon lamp becomes one of the technical problems to be solved by the technical personnel in the field.
Disclosure of Invention
In view of this, embodiments of the present invention provide a xenon lamp pre-burning method, a circuit and an IPL device, so as to solve the problem in the prior art that the service life of a xenon lamp is too short.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a xenon lamp pre-burning method is applied to a xenon lamp pre-burning circuit and comprises the following steps:
judging whether a pre-burning signal of the xenon lamp is acquired, if so, applying a preset direct current voltage to two ends of the xenon lamp, and applying a preset alternating voltage to a cavity core of a good conductor with local sealing where the xenon lamp is located, wherein the voltage value of the preset direct current voltage is a first voltage value, the frequency of the preset alternating voltage is a first preset frequency, and the highest peak value is a first preset peak value;
and when the pre-burning stopping signal is obtained, the preset direct current voltage is switched to a second voltage value for maintaining the conduction of the xenon lamp, and the application of a preset alternating voltage to the cavity core of the conductor with good local sealing property where the xenon lamp is located is stopped.
Preferably, in the xenon lamp pre-burning method, the first preset voltage value is 1200V, the first preset frequency is an alternating voltage of not less than 50KHz, the first preset peak value is not more than 2000V, and the second preset voltage value has a value range of [100V, 200V ].
Preferably, in the xenon lamp pre-burning method, the applying a preset direct current voltage to two ends of the xenon lamp and applying a preset alternating voltage to the cavity core of the conductor with good local sealing property where the xenon lamp is located specifically includes:
the method comprises the steps that preset direct-current voltage is applied to two ends of a xenon lamp through a first secondary winding of a multi-winding transformer and a rectifying circuit, and preset alternating voltage is applied to a cavity core of a conductor with good local sealing performance where the xenon lamp is located through a second secondary winding of the multi-winding transformer.
Preferably, in the xenon lamp pre-burning method, before the acquisition of the pre-burning stop signal, the method further includes:
monitoring the conduction state of the xenon lamp in real time, and generating a pre-burning stopping signal when detecting that the xenon lamp is conducted;
or starting timing when the xenon lamp pre-burning signal is acquired, and generating the pre-burning stopping signal when the timing time length reaches the set time length.
A xenon lamp pre-ignition circuit comprising:
a frequency converter;
a transformer circuit connected to the frequency converter;
the input ends of the rectification circuits are respectively connected with the first output end and the second output end of the transformer circuit in a one-to-one correspondence mode, and the output ends of the rectification circuits are connected with the two ends of the xenon lamp in a one-to-one correspondence mode;
the output voltages of the third output end and the fourth output end of the transformer circuit are applied to a cavity core of a conductor with good local sealing property where the xenon lamp is located;
the frequency converter is configured to: when a pre-burning signal of the xenon lamp is acquired, applying preset direct-current voltage to two ends of the xenon lamp through a first output end, a second output end and a rectification circuit of a transformer circuit, applying preset alternating voltage to a cavity core of a good local-area-closure conductor where the xenon lamp is located through a third output end and a fourth output end of the transformer circuit, wherein the voltage value of the preset direct-current voltage is a first voltage value, the frequency of the preset alternating voltage is a first preset frequency, and the highest peak value is a first preset peak value; and when the pre-burning stopping signal is obtained, the preset direct current voltage is switched to a second voltage value for maintaining the conduction of the xenon lamp, and the application of a preset alternating voltage to the cavity core of the conductor with good local sealing property where the xenon lamp is located is stopped.
Preferably, in the xenon lamp pre-burning circuit, the rectifier circuit includes:
the output end of the first unidirectional circuit is connected with the first output end of the transformer circuit, and the input end of the first unidirectional circuit is connected with the first end of the xenon lamp;
the input end of the second unidirectional circuit is connected with the first output end of the transformer circuit, and the output end of the second unidirectional circuit is connected with the second end of the xenon lamp;
the input end of the third unidirectional circuit is connected with the second output end of the transformer circuit, and the output end of the third unidirectional circuit is connected with the second end of the xenon lamp;
and the output end of the fourth unidirectional circuit is connected with the second output end of the transformer circuit, and the input end of the fourth unidirectional circuit is connected with the first end of the xenon lamp.
Preferably, in the xenon lamp pre-burning circuit, each of the first to fourth unidirectional circuits is composed of two diodes connected in series in a forward direction.
Preferably, in the xenon lamp pre-burning circuit, a fourth output terminal of the transformer output circuit is connected to the second terminal of the xenon lamp, and a third output terminal of the transformer output circuit is connected to a conductor cavity core with good local sealing property where the xenon lamp is located.
Preferably, the xenon lamp pre-burning circuit further includes:
the control switch is arranged between a fourth output end of the transformer output circuit and a second end of the xenon lamp or between a third output end of the transformer output circuit and the cavity core of the conductor with good local sealing performance;
and the switch controller is used for outputting a control signal for controlling the control switch to be switched off to the control switch when the pre-burning stopping signal is acquired.
Preferably, the xenon lamp pre-burning circuit further includes:
and the xenon lamp state detection circuit is used for detecting the conduction state of the xenon lamp, and generating and outputting a pre-burning stopping signal for stopping pre-burning the xenon lamp when the xenon lamp is in the conduction state.
Preferably, in the xenon lamp pre-burning circuit, the transformer circuit is a multi-winding transformer;
the input winding of the multi-winding transformer is connected with the output end of the frequency converter;
the different-name end of the first secondary winding of the multi-winding transformer is used as the first output end of the transformer circuit, and the same-name end of the first secondary winding of the multi-winding transformer is used as the second output end of the transformer circuit;
and the synonym terminal of the second secondary winding of the multi-winding transformer is used as the third output terminal of the transformer circuit, and the homonymy terminal is used as the fourth output terminal of the transformer circuit.
Preferably, in the xenon lamp pre-burning circuit, the transformer circuit includes:
a first transformer and a second transformer;
the input ends of the first transformer and the second transformer are connected with the output end of the frequency converter;
two ends of a secondary winding of the first transformer are respectively used as a first output end and a second output end of the transformer circuit;
and two ends of the secondary winding of the second transformer are respectively used as a third output end and a fourth output end of the transformer circuit.
IPL equipment, which is applied with any one of xenon lamp pre-burning circuit
Based on the technical scheme, in the scheme provided by the embodiment of the invention, when the transformer circuit starts to work, the first output end and the second output end of the transformer circuit output preset direct-current voltages to the xenon lamp through the rectifier circuit, the third output end and the fourth output end of the transformer circuit apply preset alternating voltages to the cavity core of the conductor with good local sealing property, a high-voltage rapid-changing field generated by the preset alternating voltages keeps and enhances the action of xenon lamp gas α, the number of positive ions of the gas is increased, meanwhile, the xenon lamp electrode only has the preset direct-current voltage at the highest level, the preset direct-current voltage is smaller than the voltage applied to the two ends of the xenon lamp in the prior art, the gamma action of the cathode of the xenon lamp is reduced, the kinetic energy of the cathode bombarded by the positive ions is reduced, so that the crack of the positive ions acting on the cathode of the xenon lamp is weakened by improving the abundance of the positive ions acting on the cathode of the xenon lamp, the number of electrons and positive ions inside the xenon lamp is effectively increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a xenon lamp pre-burning circuit disclosed in an embodiment of the present application;
FIG. 2 is a schematic diagram of a pre-ignition circuit of a xenon lamp according to another embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a pre-ignition circuit of a xenon lamp according to another embodiment of the present disclosure;
fig. 4 is a schematic flow chart of a xenon lamp pre-burning method disclosed in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The scheme disclosed by the embodiment of the application is based on: according to the Townson gas self-sustaining discharge condition, namely, the breakdown criterion:
δ＝γ(eαd-1)＝1
its physical meaning is that if an initial electron initially escapes from the cathode, the electron is accelerated and continuously undergoes impact ionization, and the number of electrons increases to e when reaching the anodeαdThe number of positive ions generated in this process is equivalent to subtracting from these numbers of electronsOne electron, i.e. (e)αd-1) these positive ions eventually act by gamma, generating secondary electron emission if gamma (e) is emittedαd-1) at least 1, a continuous self-sustaining current can be generated.
However, most of xenon lamp devices realize xenon lamp pre-burning through constant high voltage increasing gamma action or pulse high voltage increasing α action, and the breakdown voltage and the breakdown time required by xenon lamp conduction are high, so that the service life of the xenon lamp is shortened.
Aiming at the problem that in the prior art, the service life of a xenon lamp is seriously shortened in the higher xenon lamp pre-burning process in the pre-burning stage, the application discloses a xenon lamp pre-burning circuit, which is shown in figure 1 and comprises:
a frequency converter 100;
a transformer circuit 200 connected to the frequency converter 100;
the rectifier circuit 300 is connected with the first output end and the second output end of the transformer circuit 200 in a one-to-one correspondence mode, and the two output ends of the rectifier circuit 300 are connected with the two ends of the xenon lamp in a one-to-one correspondence mode;
the third output end and the fourth output end of the transformer circuit 200 are connected with a cavity core a (the xenon lamp is contained in the cavity core a, and the cavity core is not shown in the drawing and is replaced by a vertical line) of a good local sealing conductor where the xenon lamp is located;
the frequency converter 100 is configured to: when a xenon lamp pre-burning signal is acquired, applying preset direct-current voltage to two ends of a xenon lamp through a first output end, a second output end and a rectification circuit 300 of a transformer circuit 200, applying preset alternating voltage to a cavity core A of a good local-closed conductor where the xenon lamp is located through a third output end and a fourth output end of the transformer circuit 200, wherein the voltage value of the preset direct-current voltage is a first voltage value, the frequency of the preset alternating voltage is a first preset frequency, and the highest peak value is a first preset peak value; and when the pre-burning stopping signal is obtained, the preset direct current voltage is switched to a second voltage value for maintaining the conduction of the xenon lamp, and the application of a preset alternating voltage to the cavity core of the conductor with good local sealing property where the xenon lamp is located is stopped.
When the xenon lamp normally works, in the xenon lamp pre-burning circuit, the first output end and the second output end of the transformer circuit 200 are the maintaining voltage output ends of the xenon lamp pre-burning circuit, when the xenon lamp does not pre-burn, the first output end and the second output end output a preset constant high-voltage direct current to the xenon lamp through rectification by the rectification circuit, and the voltage value of the preset direct current is determined according to the ratio of the output of the frequency converter 100 and the input and output voltage in the transformer circuit 200, for example, in the technical scheme disclosed in the above embodiment of the present application, the direct current high voltage of 1200 can be output by the rectification circuit by setting the output of the frequency converter 100 and the ratio of the output and the output of the transformer circuit 200. After the xenon lamp is pre-ignited, the voltage output by the first output end and the second output end of the transformer circuit 200 only has a tube voltage drop of 100V to 200V required for maintaining the xenon lamp glow discharge, that is, after the pre-ignition is finished, the output of the frequency converter 100 and/or the transformer circuit 200 can be adjusted, so that the output voltage of the rectification circuit 300 is the voltage required for maintaining the xenon lamp glow discharge, and the voltage value can be selected by a user according to the user requirement, for example, can be any voltage value within the range of [100V, 200V ];
the third output end and the fourth output end of the transformer circuit 200 are pre-burning trigger voltage output ends of the xenon lamp, and the pre-burning trigger voltage output ends are connected to a conductor cavity core a with good local sealing property of the xenon lamp, so that high-voltage and high-frequency alternating current signals are output. When the xenon lamp is not pre-burning, the maximum peak value of the output voltages of the third output terminal and the fourth output terminal of the transformer circuit 200 is a first preset peak value which should be smaller than a set peak value threshold, and the frequency thereof may be a first preset frequency which is smaller than a set frequency threshold, for example, when the xenon lamp is not pre-burning, the maximum peak value of the voltage value alternating current signals output by the third output terminal and the fourth output terminal may be set to be a first preset peak value which is not greater than 1500V, and the frequency thereof may be a first preset frequency which is not less than 50 KHz; after the pre-burning of the xenon lamp is finished, the alternating current does not need to be applied to the conductor cavity core A with good local sealing performance, so that the application of the alternating current to the conductor cavity core A with good local sealing performance is stopped at the moment;
in the following, the working process of the above-mentioned circuit of the present application is explained in a unified manner based on the working principle, when the frequency converter 100 receives the pre-burning signal, the transformer circuit 200 starts to work, the first output terminal and the second output terminal of the transformer circuit 200 output the preset dc voltage to the xenon lamp through the rectifier circuit 300, the third output terminal and the fourth output terminal of the transformer circuit 200 apply the preset alternating voltage to the good conductor cavity a with local sealing property, the high-voltage rapid transformation field generated by the preset alternating voltage maintains and enhances the action of the xenon lamp gas α, the positive ion quantity of the gas is increased, at the same time, the xenon lamp electrode has only the preset dc voltage at the highest, the preset dc voltage is smaller than the voltage applied at the two ends of the xenon lamp in the prior art, the gamma action of the xenon lamp cathode is reduced, the kinetic energy of the positive ion bombarding the cathode is reduced, so that by increasing the abundance of the positive ion acting on the xenon lamp cathode, the crack of the positive ion acting on the xenon lamp cathode is effectively increased, the electron and the number of the electrons and the positive ion bombarding inside the xenon lamp is increased, the xenon lamp can be conducted within a short time (the order of microseconds).
In the technical solutions disclosed in the above embodiments of the present application, the specific structure of the rectifier circuit may be set according to the user's requirements, for example, the rectifier circuit may be a zero-type circuit, a bridge circuit, or another type of rectifier circuit capable of implementing ac-dc conversion.
Referring to fig. 2, in the technical solution disclosed in the embodiment of the present application, the rectifier circuit 300 may be a full-bridge rectifier circuit composed of four unidirectional circuits, and after the ac signals output by the first output terminal and the second output terminal of the transformer circuit 200 are full-bridge rectified by the full-bridge rectifier circuit, the dc voltage is output to the anode of the xenon lamp, where:
the output end of the first unidirectional circuit 301 is connected with the first output end of the transformer circuit 200, and the input end of the first unidirectional circuit 301 is connected with the first end of the xenon lamp;
the input end of the third unidirectional circuit 303 is connected with the second output end of the transformer circuit 200, and the output end of the third unidirectional circuit 303 is connected with the second end of the xenon lamp;
the input end of the second unidirectional circuit 302 is connected with the first output end of the transformer circuit 200, and the output end of the second unidirectional circuit 302 is connected with the second end of the xenon lamp;
the output end of the fourth unidirectional circuit 304 is connected to the second output end of the transformer circuit 200, and the input end of the fourth unidirectional circuit 304 is connected to the first end of the xenon lamp.
The first unidirectional circuit 301 and the third unidirectional circuit 303 form a first rectifying branch, the second unidirectional circuit 302 and the fourth unidirectional circuit 304 form a second rectifying branch, when the voltage signal output by the third output end of the transformer circuit 200 is a positive value and the electric signal output by the first output end is a negative value, the current is output by the third output end of the transformer circuit, and the output current sequentially flows through the third unidirectional circuit 303, the xenon lamp second end, the xenon lamp first end and the first unidirectional circuit 301 and flows back to the first output end of the transformer circuit 200; when the voltage signal output by the first output terminal of the transformer circuit 200 is a positive value and the electrical signal output by the second output terminal of the transformer output circuit is a negative value, the current flows out from the first output terminal of the transformer circuit, sequentially flows through the second unidirectional circuit 301, the xenon lamp second terminal, the xenon lamp first terminal, and the fourth unidirectional circuit 304, and flows back to the second output terminal of the transformer circuit 200. The current is alternately switched between the first rectifying branch and the second rectifying branch, so that the direct-current voltage with the preset magnitude is applied to the xenon lamp through the rectifying circuit 300.
In the above one-way circuit, the specific structure of each one-way circuit may be set by itself according to the user's requirement, as long as the one-way function of the corresponding one-way circuit can be realized, for example, in the technical solution disclosed in the above embodiment of the present application, the first to fourth one-way circuits may each be composed of one diode or two diodes connected in series in the forward direction.
In the technical solution disclosed in the above embodiment of the present application, in order to apply a preset alternating voltage to the good local-sealed conductor cavity a, the fourth output terminal of the transformer output circuit 200 may be connected to the second terminal of the xenon lamp, and the third output terminal of the transformer output circuit 200 is connected to the good local-sealed conductor cavity a where the xenon lamp is located, so as to apply the preset alternating voltage to the good local-sealed conductor cavity a.
In the technical solution disclosed in another embodiment of the present application, after the pre-burning of the xenon lamp is finished, it is not necessary to apply a voltage to the well-closed-area conductor cavity a, and therefore, in order to prevent the waste of electric energy and prevent the influence of a preset alternating voltage applied to the well-closed-area conductor cavity a on the normal operation of the xenon lamp, in the technical solution disclosed in the embodiment of the present application, a control switch S1 may be further disposed between the fourth output terminal of the transformer output circuit 200 and the second terminal of the xenon lamp or between the third output terminal of the transformer output circuit 200 and the well-closed-area conductor cavity a;
in order to timely control the on-off of the control switch S1 and control the adjustment of the output voltage and frequency of the inverter 100, in the technical solution disclosed in the above embodiment of the present application, a switch controller may be further included, the switch controller is configured to set the output signal of the inverter according to a user operation, in the technical solution disclosed in the embodiment of the present application, the output signal of the inverter may include a first output signal and a second output signal, the first output signal is used to puncture the xenon lamp in a pre-burning process, the second output signal is used to maintain the xenon lamp in a glow discharge stage, the frequency and the voltage peak value of the first output signal and the second output signal may be set by a user, when the pre-burning signal of the xenon lamp is obtained, the trigger signal is output to the inverter 100 and the control switch S1 to control the inverter 100 to output the first output signal adjusted by the user, controlling the control switch S1 to close; when the pre-burning stopping signal is acquired, the frequency converter is controlled to output a second output signal, and the control switch S1 is controlled to be switched off.
In the technical solution disclosed in the embodiment of the present application, in order to enable the switch controller to accurately control the switching between the output signals of the frequency converter 100 and the timing of switching between the conduction states of the control switch S1, the technical solution disclosed in the above embodiment of the present application may further include a xenon lamp state detection circuit, the detection circuit is configured to detect the conduction state of the xenon lamp, when the xenon lamp is in the conduction state, generate and output a pre-burning stop signal for stopping pre-burning of the xenon lamp, when the frequency converter and/or the switch controller detects the signal, the frequency converter and/or the switch controller performs a corresponding operation, and the detection circuit may detect the conduction state of the xenon lamp by detecting signals such as voltage at two ends of the xenon lamp or output light intensity of the xenon lamp.
Of course, in order to simplify the circuit, the stop pre-ignition signal may be automatically output by a timer, that is, the timer starts counting when the xenon lamp pre-ignition signal is detected, and the stop pre-ignition signal is automatically generated when the counted time length reaches a set time length.
In the technical solution disclosed in the above embodiment of the present application, the specific structure of the frequency converter circuit 200 may be set according to the user's requirement, and it may be composed of a multi-winding transformer, and when it is a multi-winding transformer, see fig. 3, the multi-winding transformer includes a main winding and two secondary windings, and the input winding of the multi-winding transformer is connected to the output terminal of the frequency converter 100; the different-name end of the first secondary winding of the multi-winding transformer is used as the first output end of the transformer circuit, and the same-name end of the first secondary winding of the multi-winding transformer is used as the second output end of the transformer circuit; and the synonym terminal of the second secondary winding of the multi-winding transformer is used as the third output terminal of the transformer circuit, and the homonymy terminal is used as the fourth output terminal of the transformer circuit. When the frequency of the output signal of the frequency converter is increased, the number of turns of the second secondary winding can be reduced to reduce the highest peak value of the signal output by the third output end and the fourth output end, for example, when the frequency is set to be higher than 1MHz, the highest peak value of the signal output by the third output end and the fourth output end can be set to be less than 1500V, the output voltage of the xenon lamp and the fourth output end is rapidly reduced due to the output change of the frequency converter, and when the control switch is switched off, the third output end and the fourth output end stop outputting;
of course, the transformer circuit 100 is composed of two transformers independent of each other, i.e. the transformer circuit 100 may include:
a first transformer and a second transformer;
wherein, the input ends of the first transformer and the second transformer are connected with the output end of the frequency converter 100;
two ends of a secondary winding of the first transformer are respectively used as a first output end and a second output end of the transformer circuit;
and two ends of the secondary winding of the second transformer are respectively used as a third output end and a fourth output end of the transformer circuit.
Referring to fig. 3, in a technical solution disclosed in another embodiment of the present application, a fourth output terminal of the transformer circuit, an output terminal of the second unidirectional circuit, and an output terminal of the third unidirectional circuit are connected to a second terminal of the xenon lamp through a high voltage isolation silicon stack D0, wherein the output terminal of the high voltage isolation silicon stack D0 is connected to the second terminal of the xenon lamp. An isolation capacitor C is further disposed between the third output end of the transformer circuit 200 and the cavity core a, preferably, one end of the isolation capacitor C is connected to the third output end of the transformer circuit 200, the other end of the isolation capacitor C is connected to the control switch S1, and the other end of the control switch S1 is connected to the cavity core a.
Referring to fig. 3, in order to protect the circuit, the transformer circuit 200 is provided with a capacitor C1 between two input terminals connected to the frequency converter 100.
In a preferred aspect disclosed in another embodiment of the present application, the frequency converter 100 is configured to: when a pre-burning signal of the xenon lamp is acquired, applying 1200V preset direct-current voltage to two ends of the xenon lamp through a first output end, a second output end and a rectification circuit 300 of the transformer circuit 200, and applying preset alternating voltage with the highest peak value of 2000V and the frequency of 50KHz to a cavity core of a good conductor with local sealing where the xenon lamp is located through a third output end and a fourth output end of the transformer circuit 200; when a pre-burning stopping signal is acquired, the preset direct current voltage is switched to a second voltage value of 100-200V for maintaining the conduction of the xenon lamp, the control switch S1 is controlled to be switched off to stop applying the preset alternating voltage to the cavity core of the conductor with good local sealing performance where the xenon lamp is located, and the high-frequency voltage 600-700V remained at the third output end and the fourth output end of the transformer circuit is cut off by rapidly switching off the control switch S1.
The applicant verifies that the technical scheme disclosed by the embodiment achieves the following effects:
compared with the prior art, the breakdown voltage of the glow starting stage is as low as 620V under the same condition, and is reduced by more than 10 times;
compared with the prior art, the breakdown time of the glow starting stage is as low as 57us under the same condition, and the efficiency is improved by more than 200 times;
compared with the prior art, the pulse peak interference in the glow starting stage is that the peak value of the pulse peak under the same condition becomes quite small and no obvious peak exists;
the amplitude of the high-frequency voltage in the glow starting stage is lower than 2000V, the frequency is higher than 50KHz, the required peak voltage under the same condition is reduced by more than 4 times, and high-voltage electrostatic interference is avoided;
ionizing radiation in the glow stage does not appear under the same condition;
the service life of the pulse xenon lamp is prolonged, under the same condition, the cathode gamma function of the pulse xenon lamp is small, and the service life of the pulse xenon lamp can be greatly prolonged.
Corresponding to the above circuit, the present application also discloses a device applying the xenon lamp pre-burning circuit, for example, the device may be an IPL (Intense Pulsed Light, referred to as Intense Pulsed Light) device, such as an IPL depilator, an IPL skin tenderer, etc., the IPL device is applied with the xenon lamp pre-burning circuit according to any one of the above embodiments of the present application.
Corresponding to the circuit, the application also discloses a xenon lamp pre-burning method, and the description of the method embodiment can be referred to the embodiment description in the circuit structure, and the method can be applied to any xenon lamp pre-burning circuit provided by the above embodiment of the application, and referring to fig. 4, the method can comprise:
step S101: judging whether a pre-burning signal of the xenon lamp is acquired or not, if so, executing the steps S102 and S103;
step S102: applying preset direct-current voltage to two ends of the xenon lamp;
the voltage value of the preset direct current voltage is a first voltage value;
step S103: applying preset alternating voltage to a conductor cavity core with good local sealing property where a xenon lamp is located;
the frequency of the preset alternating voltage is a first preset frequency, and the highest peak value is a first preset peak value;
step S104: when the pre-burning stopping signal is acquired, executing steps S105 and S106;
step S105: switching the preset direct current voltage to a second voltage value for maintaining the conduction of the xenon lamp;
the first voltage value and the second preset voltage value are adjustable according to user requirements, and the frequency and the highest peak value of the preset alternating voltage can also be adjustable according to the user requirements;
step S106: and stopping applying a preset alternating voltage to the cavity core of the conductor with good local sealing property where the xenon lamp is located.
In the method, when the pre-burning signal is detected, a preset direct current voltage is applied to two ends of the xenon lamp, a preset alternating voltage is applied to the cavity core A of the conductor with good local sealing property, the action of the gas α of the xenon lamp is maintained and enhanced through a high-voltage rapid-changing field generated by the preset alternating voltage, the quantity of positive ions of the gas is increased, meanwhile, the xenon lamp electrode only has the preset direct current voltage at most, the preset direct current voltage is smaller than the voltage applied to the two ends of the xenon lamp in the prior art, the gamma action of the cathode of the xenon lamp is reduced, the kinetic energy of the cathode bombarded by the positive ions is reduced, the crack degree of the cathode of the xenon lamp acted by the positive ions is weakened, the quantity of electrons and the positive ions in the xenon lamp is effectively increased, the internal reaction of the xenon lamp is accelerated, and the xenon lamp can be ignited and conducted in a very short time (microsecond order of magnitude) in the process, because the action of the secondary electrons sputtered by the single positive ion cathode of the xenon lamp is weakened, and the service life of the xenon lamp is greatly prolonged.
Corresponding to the above device, in the method, the first preset voltage value is 1200V, the first preset frequency is an alternating voltage not less than 50KHz, the first preset peak value is not more than 2000V, and the value range of the second preset voltage value is [100V, 200V ].
In the above method, the applying a preset direct current voltage to the two ends of the xenon lamp and applying a preset alternating voltage to the cavity core of the conductor with good local sealing property where the xenon lamp is located may specifically be:
the method comprises the steps that preset direct-current voltage is applied to two ends of a xenon lamp through a first secondary winding of a multi-winding transformer and a rectifying circuit, and preset alternating voltage is applied to a cavity core of a conductor with good local sealing performance where the xenon lamp is located through a second secondary winding of the multi-winding transformer.
Corresponding to the method, before the pre-burning stopping signal is acquired, the method further comprises the following steps:
monitoring the conduction state of the xenon lamp in real time through the voltage at the two ends of the xenon lamp, the light intensity output by the xenon lamp and the like, and generating a pre-burning stopping signal when the conduction of the xenon lamp is detected;
or starting timing when the xenon lamp pre-burning signal is acquired, and generating the pre-burning stopping signal when the timing time length reaches the set time length.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A xenon lamp pre-burning method is applied to a xenon lamp pre-burning circuit and is characterized by comprising the following steps:
judging whether a pre-burning signal of the xenon lamp is acquired, if so, applying a preset direct current voltage to two ends of the xenon lamp, and applying a preset alternating voltage to a cavity core of a good conductor with local sealing where the xenon lamp is located, wherein the voltage value of the preset direct current voltage is a first voltage value, the frequency of the preset alternating voltage is a first preset frequency, and the highest peak value is a first preset peak value;
when a pre-burning stopping signal is obtained, the preset direct current voltage is switched to a second voltage value for maintaining the conduction of the xenon lamp, and the application of a preset alternating voltage to a cavity core of a good conductor with local sealing property where the xenon lamp is located is stopped;
the method comprises the following steps of applying preset direct-current voltage to two ends of a xenon lamp, and applying preset alternating voltage to a cavity core of a conductor with good local sealing property where the xenon lamp is located, wherein the preset alternating voltage specifically comprises the following steps:
applying preset direct-current voltage to two ends of a xenon lamp through a first secondary winding of a multi-winding transformer and a rectifying circuit, and applying preset alternating voltage to a cavity core of a conductor with good local sealing property where the xenon lamp is located through a second secondary winding of the multi-winding transformer;
the first preset voltage value is 1200V, the first preset frequency is an alternating voltage not less than 50KHz, the first preset peak value is not more than 2000V, and the value range of the second preset voltage value is [100V, 200V ];
before acquiring the pre-burning stopping signal, the method further comprises the following steps:
monitoring the conduction state of the xenon lamp in real time, and generating a pre-burning stopping signal when detecting that the xenon lamp is conducted;
or starting timing when the xenon lamp pre-burning signal is acquired, and generating the pre-burning stopping signal when the timing time length reaches the set time length.
2. A xenon lamp pre-burning circuit, comprising:
a frequency converter;
a transformer circuit connected to the frequency converter;
the input ends of the rectification circuits are respectively connected with the first output end and the second output end of the transformer circuit in a one-to-one correspondence mode, and the output ends of the rectification circuits are connected with the two ends of the xenon lamp in a one-to-one correspondence mode;
the output voltages of the third output end and the fourth output end of the transformer circuit are applied to a cavity core of a conductor with good local sealing property where the xenon lamp is located;
the frequency converter is configured to: when a pre-burning signal of the xenon lamp is acquired, applying preset direct-current voltage to two ends of the xenon lamp through a first output end, a second output end and a rectification circuit of a transformer circuit, applying preset alternating voltage to a cavity core of a good local-area-closure conductor where the xenon lamp is located through a third output end and a fourth output end of the transformer circuit, wherein the voltage value of the preset direct-current voltage is a first voltage value, the frequency of the preset alternating voltage is a first preset frequency, and the highest peak value is a first preset peak value; when a pre-burning stopping signal is obtained, the preset direct current voltage is switched to a second voltage value for maintaining the conduction of the xenon lamp, and the application of a preset alternating voltage to a cavity core of a good conductor with local sealing property where the xenon lamp is located is stopped;
the transformer circuit is a multi-winding transformer;
the input winding of the multi-winding transformer is connected with the output end of the frequency converter;
the different-name end of the first secondary winding of the multi-winding transformer is used as the first output end of the transformer circuit, and the same-name end of the first secondary winding of the multi-winding transformer is used as the second output end of the transformer circuit;
the synonym end of the second secondary winding of the multi-winding transformer is used as a third output end of the transformer circuit, and the homonymy end of the second secondary winding of the multi-winding transformer is used as a fourth output end of the transformer circuit;
further comprising:
and the xenon lamp state detection circuit is used for detecting the conduction state of the xenon lamp, and generating and outputting a pre-burning stopping signal for stopping pre-burning the xenon lamp when the xenon lamp is in the conduction state.
3. The xenon lamp pre-burning circuit according to claim 2, wherein the rectification circuit comprises:
the output end of the first unidirectional circuit is connected with the first output end of the transformer circuit, and the input end of the first unidirectional circuit is connected with the first end of the xenon lamp;
the input end of the second unidirectional circuit is connected with the first output end of the transformer circuit, and the output end of the second unidirectional circuit is connected with the second end of the xenon lamp;
the input end of the third unidirectional circuit is connected with the second output end of the transformer circuit, and the output end of the third unidirectional circuit is connected with the second end of the xenon lamp;
and the output end of the fourth unidirectional circuit is connected with the second output end of the transformer circuit, and the input end of the fourth unidirectional circuit is connected with the first end of the xenon lamp.
4. The xenon lamp pre-burning circuit according to claim 3, wherein the first to fourth unidirectional circuits are each composed of two forward series connected diodes.
5. The xenon lamp pre-burning circuit according to claim 2, wherein a fourth output end of the transformer output circuit is connected with a second end of the xenon lamp, and a third output end of the transformer output circuit is connected with a conductor cavity core with good local sealing property where the xenon lamp is located.
6. The xenon lamp pre-burning circuit according to claim 5, further comprising:
the control switch is arranged between a fourth output end of the transformer output circuit and a second end of the xenon lamp or between a third output end of the transformer output circuit and the cavity core of the conductor with good local sealing performance;
and the switch controller is used for outputting a control signal for controlling the control switch to be switched off to the control switch when the pre-burning stopping signal is acquired.
7. The xenon lamp pre-ignition circuit of claim 2, wherein the transformer circuit comprises:
a first transformer and a second transformer;
the input ends of the first transformer and the second transformer are connected with the output end of the frequency converter;
two ends of a secondary winding of the first transformer are respectively used as a first output end and a second output end of the transformer circuit;
and two ends of the secondary winding of the second transformer are respectively used as a third output end and a fourth output end of the transformer circuit.
8. An IPL device characterized in that a xenon lamp pre-ignition circuit according to any one of claims 2 to 6 is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710261867.6A CN106993368B (en) | 2017-04-20 | 2017-04-20 | Xenon lamp pre-burning method and circuit and IPL (Internet protocol labeling) equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710261867.6A CN106993368B (en) | 2017-04-20 | 2017-04-20 | Xenon lamp pre-burning method and circuit and IPL (Internet protocol labeling) equipment |
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| CN106993368A CN106993368A (en) | 2017-07-28 |
| CN106993368B true CN106993368B (en) | 2020-02-14 |
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| CN202143278U (en) * | 2011-06-29 | 2012-02-08 | 武汉凌云光电科技有限责任公司 | Low power xenon lamp lighting and triggering device |
| CN202168264U (en) * | 2011-08-11 | 2012-03-14 | 深圳市蓝谱里克科技有限公司 | Pulse xenon lamp power supply |
| CN104244545A (en) * | 2014-09-15 | 2014-12-24 | 中国科学院上海光学精密机械研究所 | Triggering pre-burning device with xenon lamp |
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