WO2012145900A1 - Ballast level control method and system for ceramic metal halide lamp - Google Patents

Ballast level control method and system for ceramic metal halide lamp Download PDF

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Publication number
WO2012145900A1
WO2012145900A1 PCT/CN2011/073377 CN2011073377W WO2012145900A1 WO 2012145900 A1 WO2012145900 A1 WO 2012145900A1 CN 2011073377 W CN2011073377 W CN 2011073377W WO 2012145900 A1 WO2012145900 A1 WO 2012145900A1
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WO
WIPO (PCT)
Prior art keywords
circuit
voltage
metal halide
halide lamp
resistor
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PCT/CN2011/073377
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French (fr)
Chinese (zh)
Inventor
刘伟
廖华平
周懋花
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深圳世强电讯有限公司
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Application filed by 深圳世强电讯有限公司 filed Critical 深圳世强电讯有限公司
Priority to PCT/CN2011/073377 priority Critical patent/WO2012145900A1/en
Publication of WO2012145900A1 publication Critical patent/WO2012145900A1/en

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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

Definitions

  • the invention relates to the field of electronic ballasts for lamps, and in particular to a method and system for controlling the level of ceramic metal halide lamp ballasts.
  • ceramic metal halide lamps have increasingly shown their superiority. Since the ceramic metal halide lamp has no filament, there is no problem of scrapping due to filament breakage, resulting in a long service life.
  • the color temperature of ceramic metal halide lamps 3000K to 12000K the higher the color temperature of the lamp, the worse the penetration of fog and rain, and at 6000K
  • the color of the left and right is just the color temperature from white to blue, and the color closest to noon. The eye's acceptance and comfort are the highest.
  • the electronic ballast is a power conversion device for converting alternating current supplied by a power supply to a higher voltage direct current or high frequency alternating current. Since the inside of the ceramic metal halide lamp is an inert gas, it needs 3-6KV. The UHV current stimulates the gas to illuminate, creating a white arc between the two poles, which increases the complexity of the ballast design due to this particular requirement of the ceramic metal halide lamp. Therefore, how to reliably and quickly break down the ceramic metal halide lamp is an important task in the design of electronic ballasts for ceramic metal halide lamps.
  • FIG. 1 is a circuit diagram of a single level electronic ballast in the prior art. As shown in Figure 1, terminals K11 and K12 are inputs for connecting the electrodes of the power supply. Inputs K11 and K12 It is connected by a series structure of the inductor L11 and the switching element M11. The common terminal of the inductor L11 and the switching element M11 is connected to the anode of the diode D11. Terminal K13 and diode Cathode connection of D11.
  • Terminals K14 and K12 are at the same level. Terminals K13 and K14 are connected by a series connection of resistors R11 and R12. Switching element M11 The control electrode is connected to the output of the control device IC11.
  • the control device IC11 is an APFC (Active Power Factor Corrector) chip for generating a control signal that causes the switching element M11 Alternately conducting and not conducting.
  • the signals at the common terminals of resistors R11 and R12 are input to the control device IC11.
  • Control device IC11 and inductor L11, switching element M11, diode D11 forms a boost (BOOST) circuit.
  • the output signal of the programmable device 11 controls the control device IC12 and the lamp (ie, the ceramic metal halide lamp).
  • Control device IC12 It is a half-bridge driver chip with an input terminal connected to the programmable device 11 and an output terminal connected to the switching elements M12 and M13 respectively. .
  • the single-level electronic ballast has a simple structure, but since it maintains the same voltage before and after the lamp is turned on, it is not conducive to successful and reliable breakdown of the illuminating ceramic metal halide lamp.
  • the technical problem to be solved by the present invention is to provide a method capable of realizing electricity in the prior art that only a single-level and single-level electronic ballast is disadvantageous for successfully and reliably breaking down the defects of the illuminating ceramic metal halide lamp.
  • the flat switching ceramic metal halide lamp ballast level control method also provides a ceramic metal halide lamp ballast level control system capable of reliably breaking down the lighting metal halide lamp.
  • a ceramic metal halide lamp ballast level control method including:
  • the programmable device sends a connection signal or a disconnection signal to the switch circuit according to the working state of the ceramic metal halide lamp, and controls a voltage division state of the voltage division sampling circuit connected to the switch circuit, and the switch circuit has a preset resistance value when connected
  • the voltage dividing sampling circuit includes a first resistor and a second resistor sequentially connected in series between the positive and negative output terminals of the boosting circuit, and the divided voltage state is a partial pressure of the second resistor;
  • the control chip detects a partial pressure of the second resistor, and changes an output voltage of the booster circuit according to the divided voltage.
  • the switch circuit is connected in parallel with the second resistor.
  • the programmable device In a startup phase of the ceramic metal halide lamp, the programmable device outputs a communication signal to connect the switch circuit.
  • the control chip controls the output voltage of the booster circuit to a first level according to the detected lower partial voltage.
  • the programmable device In the normal working phase of the ceramic metal halide lamp, the programmable device outputs a disconnection signal.
  • the switching circuit is turned off, and the control chip controls the output voltage of the boosting circuit to a second level according to the detected higher partial voltage, wherein the first level is higher than the second level.
  • the switch circuit includes a third resistor and a switch tube connected in series, and the programmable device is connected to the control electrode of the switch tube.
  • the switch tube is a triode
  • the programmable device is connected to a base of the triode
  • the switch circuit further includes a base connected to the triode a first capacitance between the negative output of the boost circuit.
  • the programmable device in the startup phase of the ceramic metal halide lamp, the programmable device outputs a connected signal for a preset period of time.
  • a ceramic metal halide lamp ballast level control system comprising a control chip for sequentially controlling a boost state, a boost circuit for boosting variable frequency rectification, and a half bridge control for maintaining constant power.
  • a circuit, a driving circuit for providing a driving signal, and a programmable device for providing a control signal further comprising a level switching circuit respectively connected to the control chip and the programmable device, the level switching circuit including a voltage dividing sampling circuit and a switching circuit for changing a voltage dividing state of the voltage dividing sampling circuit, the voltage dividing sampling circuit comprising a first resistor sequentially connected in series between the positive and negative output terminals of the boosting circuit And a second resistor, the switch circuit has a predetermined resistance value when connected, the programmable device outputs a communication signal or a disconnection signal to the switching circuit to change a voltage division of the second resistor, and the control chip detects The partial pressure of the second resistor changes the output voltage of the booster circuit according to the divided voltage.
  • the switch circuit is connected in parallel with the second resistor.
  • the programmable device In the startup phase of the ceramic metal halide lamp, the programmable device outputs a communication signal to connect the switch circuit.
  • the control chip controls the booster circuit to output a higher output voltage according to the detected lower partial pressure.
  • the programmable device In a normal working phase of the ceramic metal halide lamp, the programmable device outputs an off signal to cause the switch circuit Disconnected, the control chip controls the booster circuit to output a lower output voltage according to the detected higher partial voltage.
  • the switch circuit includes a third resistor and a switch tube connected in series, and the programmable device is connected to the control electrode of the switch tube.
  • the switch tube is a triode
  • the programmable device is connected to a base of the triode
  • the switch circuit further includes a base connected to the triode a first capacitance between the negative output of the boost circuit.
  • the programmable device includes a delay circuit or a timer, and the programmable device outputs a connected signal within a preset time period.
  • the beneficial effect of the method and system for controlling the level of the ceramic metal halide lamp ballast is as follows: by increasing the level switching circuit, the output voltage of the boosting circuit can be performed according to different working states of the ceramic metal halide lamp ballast. Flat switch. That is, when the metal halide lamp is started, the output voltage of the boosting circuit is maintained at a first level of a higher level, and when the metal halide lamp is in normal operation, the output voltage of the boosting circuit is maintained at a lower level. At two levels, and the first level is higher than the second level.
  • the invention can successfully and reliably penetrate the ceramic metal halide lamp.
  • FIG. 1 is a circuit diagram of a single level ballast control system in the prior art
  • FIG. 2 is a schematic structural diagram of a switching level ballast control system according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a circuit for realizing level switching according to a first embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a circuit for realizing level switching according to a second embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a circuit for realizing level switching according to a third embodiment of the present invention.
  • FIG. 6 is a circuit diagram of a switching level ballast control system in accordance with a preferred embodiment of the present invention.
  • FIG. 7 is a flow chart of a method for controlling a level of a ceramic metal halide lamp ballast according to an embodiment of the present invention.
  • FIG. 8 is a flow chart of a method for controlling a level of a ceramic metal halide lamp ballast in accordance with another embodiment of the present invention.
  • FIG. 2 is a block diagram showing the structure of a switching level ballast control system in accordance with one embodiment of the present invention.
  • the switching level ballast control system The booster circuit 100, the level shifting circuit 200, the half bridge control circuit 300, the driving circuit 400, the control chip 500, and the programmable device 600 are included.
  • Control chip 500 The boosting circuit 100, the half-bridge control circuit 300, the driving circuit 400, and the programmable device 600 are sequentially connected, and the level switching circuit 200 is respectively associated with the control chip 500 and the programmable device 600 connected.
  • Drive circuit 400 is coupled to associated devices of the ballast control system to provide drive signals.
  • the level switching circuit 200 may include a connected voltage dividing sampling circuit 210 and a change voltage dividing sampling circuit 210.
  • the switching circuit 220 of the divided state may include a connected voltage dividing sampling circuit 210 and a change voltage dividing sampling circuit 210.
  • the voltage dividing sampling circuit 210 includes a first resistor R1 and a second resistor sequentially connected in series between the positive and negative output terminals of the boosting circuit 100. R2.
  • the voltage dividing circuit 210 is used to provide a voltage dividing signal to the control chip 500, for example, to provide an input voltage to the control device IC1 to control the output voltage of the boosting circuit 100.
  • First resistance R1 The resistance of the second resistor R2 can be set as needed.
  • the switch circuit 220 has a preset resistance value when connected (the resistance value enables the second resistor R2 The desired partial pressure is obtained, which is equivalent to an open circuit when disconnected.
  • the programmable device 600 can output a connect signal or a disconnect signal to the switch circuit 220 to change the second resistor R2. Partial pressure.
  • the connected signal is a high level signal and the open signal is a low level signal, but this is for illustrative purposes only and is not intended to limit the invention. In other embodiments of the invention, other types may also be included.
  • the connected signal or the disconnected signal for example, the connected signal is a low level signal and the disconnected signal is a high level signal.
  • the control chip 500 can be used to detect the divided state of the voltage dividing sampling circuit 210 and control the boosting circuit 100 according to its voltage dividing state.
  • boost circuit 100 can include a first inductor L1 and a switching element M1 that are sequentially connected in series between the positive and negative inputs of the ballast, and control chip 500 (e.g., IC1) One end is connected to the control electrode of the switching element M1.
  • the control chip 500 (eg IC1) can be an APFC (Active Power Factor Corrector) The active power factor corrector) controls the chip to increase the power factor.
  • IC1 can use the divided voltage of the second resistor R2 as the input voltage, and change the switching element M1 according to the input voltage.
  • the turn-on and turn-off times change the output voltage of the booster circuit 100.
  • the output voltage of IC1 increases as the input voltage increases, and the booster circuit 100 is lowered by the switching element M1.
  • Output voltage is merely one embodiment of the present invention and is not intended to limit the present invention, and other circuit configurations having similar functions may also be included in other embodiments of the present invention.
  • the booster circuit 100 can be used for boost converter rectification.
  • the half bridge control circuit 300 can be used to maintain constant power.
  • Drive circuit 400 Connected to related devices in the electronic ballast (such as MOS transistors) to provide drive signals to drive these related devices.
  • Programmable device 600 can be used to provide control signals.
  • the drive circuit 400 It can be connected to programmable device 600 and controlled by programmable device 600.
  • the programmable device 600 is turned to the switching circuit 220
  • the output connected signal or the open signal changes the partial pressure of the second resistor (eg, reduces the divided voltage of the second resistor), and the control chip 500 increases the boost according to the corresponding partial pressure of the detected second resistance (eg, a lower partial pressure).
  • Circuit 100 The output voltage at the output.
  • the programmable device 600 is turned to the switch circuit 220
  • the output connected signal or the open signal changes the partial pressure of the second resistor (for example, increases the partial pressure of the second resistor), and the control chip 500 reduces the boost according to the corresponding partial pressure of the detected second resistor (eg, a higher partial pressure).
  • Circuit 100 The output voltage at the output.
  • the present invention can switch the output voltage level of the booster circuit according to different operating states of the ceramic metal halide lamp ballast. That is, when the metal halide lamp is started, the output voltage of the boosting circuit is maintained at a first level of a higher level, and when the metal halide lamp is in normal operation, the output voltage of the boosting circuit is maintained at a lower level. At two levels, and the first level is higher than the second level.
  • the invention can successfully and reliably penetrate the ceramic metal halide lamp.
  • FIG. 3 is a schematic structural diagram of a circuit for realizing level switching according to a first embodiment of the present invention.
  • a circuit for level switching is implemented.
  • the boosting circuit 100, the control chip 500, the level switching circuit 200, and the programmable device 600, the level switching circuit 200 further includes a voltage dividing sampling circuit 210 and a switching circuit 220. .
  • the booster circuit 100, the voltage divider sampling circuit 210, the control chip 500, and the programmable device 600 have been described in detail with reference to FIG. Switch circuit 220 and second resistor R2 Parallel.
  • Switching circuit 220 can include a third resistor R3 and a switching transistor in series, in series, programmable device 600 Connected to the control electrode of the switch tube.
  • the switch transistor is a transistor Q1
  • the programmable device 600 is connected to the base of the transistor Q1
  • the switch circuit 220 can also include a transistor Q1.
  • the first capacitor C1 between the base and the negative output of the boost circuit 100.
  • the third resistor R3 The resistance can be set in advance as needed.
  • this is merely an embodiment of the present invention and is not intended to limit the present invention.
  • other circuit structures having similar functions may be included, such as a switch tube or a field effect transistor.
  • the programmable device 600 outputs a connected signal to cause the switching circuit 220 Connected, the control chip 500 controls the booster circuit 100 to output a higher output voltage at the first level based on the detected lower partial voltage.
  • the programmable device 600 The output disconnection signal causes the switch circuit 220 to be turned off, and the control chip 500 controls the booster circuit 100 based on the detected higher partial voltage.
  • a lower output voltage is output at a second level, wherein the first level is higher than the second level.
  • the connected signal may be a high level signal, and the open signal may be a low level signal.
  • FIG. 4 is a schematic structural diagram of a circuit for realizing level switching according to a second embodiment of the present invention.
  • a circuit for level switching is implemented.
  • the boosting circuit 100, the control chip 500, the level switching circuit 200, and the programmable device 600, the level switching circuit 200 further includes a voltage dividing sampling circuit 210 and a switching circuit 220.
  • the booster circuit 100, the voltage divider sampling circuit 210, the control chip 500, and the programmable device 600 have been described in detail with reference to FIG. Switch circuit 220 and first resistor R1 Parallel.
  • the programmable device 600 outputs an off signal to cause the switching circuit 220 Disconnected, the control chip 500 controls the booster circuit 100 to output a higher output voltage at the first level based on the detected lower partial voltage.
  • the programmable device 600 The output connected signal causes the switching circuit 220 to communicate, and the control chip 500 controls the boosting circuit 100 according to the detected higher partial voltage.
  • a lower output voltage is output at a second level, wherein the first level is higher than the second level.
  • the connected signal may be a high level signal, and the open signal may be a low level signal.
  • FIG. 5 is a schematic structural diagram of a circuit for realizing level switching according to a third embodiment of the present invention.
  • a circuit for level switching is implemented.
  • the boosting circuit 100, the control chip 500, the level switching circuit 200, and the programmable device 600, the level switching circuit 200 further includes a voltage dividing sampling circuit 210 and a switching circuit 220. .
  • the booster circuit 100, the voltage divider sampling circuit 210, the control chip 500, and the programmable device 600 have been described in detail with reference to FIG.
  • the switch circuit 220 further includes a first sub-switch circuit 220A and the second sub-switch circuit 220B, the first sub-switch circuit 220A is connected in parallel with the first resistor R1, and the second sub-switch circuit 220B is connected in parallel with the second resistor R2.
  • the programmable device 600 outputs a first off signal to cause the first sub-switch circuit 220A disconnects and outputs a first connected signal to cause the second sub-switch circuit 220B to communicate, and the control chip 500 controls the boosting circuit 100 according to the detected lower partial voltage.
  • the higher output voltage is output at the first level.
  • the programmable device 600 outputs a second connected signal to cause the first sub-switch circuit 220A to communicate and output a second disconnect signal to cause the second sub-switch The 131B is disconnected, and the control chip 500 controls the booster circuit 100 according to the detected higher partial voltage.
  • a lower output voltage is output at a second level, wherein the first level is higher than the second level.
  • the first and second connected signals may be high level signals, and the first and second open signals may be low level signals.
  • the programmable device 600 can include a delay circuit or timer, programmable device 600.
  • the communication and/or disconnection signals may be output for a preset period of time according to a delay circuit or a timer therein. For example, keep the output connected signal and / or turn off the signal for 1 second to break through the lit metal halide lamp.
  • Programmable device The 600 can also include a ballast feedback signal sampling module that can analyze the operating state of the ceramic metal halide lamp based on the feedback signal of the sampled ballast, thereby enabling the programmable device 600 According to the working state information of the ceramic metal halide lamp, the communication and/or disconnection signals are correspondingly output.
  • terminals K1 and K2 They are positive and negative inputs for connecting the electrodes of the power supply.
  • Inductor L1 and switching element M1 are connected in series between positive and negative inputs K1 and K2.
  • Inductor L1 and switching element M1 The common terminal is connected to the anode of diode D1, and terminal K3 is connected to the cathode of diode D1, where diode D1 acts as a rectifying device.
  • Terminals K4 and K2 are at the same level and terminal K3 And K4 are connected by a series structure of a first resistor R1 and a second resistor R2.
  • Terminals K3 and K4 are the positive and negative outputs of boost circuit 100, respectively.
  • Switching element M1 The control electrode is connected to the output of the control device IC1.
  • the control device IC1 is a control chip (for example, an APFC chip) for generating a control signal, and the control signal causes the switching element M1 Alternately conducting and not conducting.
  • the common terminal of the first resistor R1 and the second resistor R2, that is, the signal of the test point 1 is input to the control device IC1.
  • Test point 1 is at the first resistor R1, the second resistor
  • the common terminal of R2 and the third resistor R3, the test point 1 is connected to the terminal K4 through the series connection of the third resistor R3 and the transistor Q1.
  • the control electrode of the transistor Q1 passes through the capacitor C1 Connected to terminal K4, the control electrode of transistor Q1 is controlled by the output signal of programmable device 1.
  • Programmable device 1 also outputs signal control and control device IC2 (ie drive circuit) and lamp (ie ceramic metal halide lamp).
  • the control device IC2 can be a half-bridge driver chip, and its input terminal is connected to the programmable device 1 , and the output terminal is respectively connected to the switching elements M2 and M3 in the half-bridge control circuit. .
  • the programmable device 1 outputs a high level signal to the transistor Q1 to make the transistor Q1 Conduction, current flows through the transistor Q1, the transistor Q1 is connected in series with the third resistor R3, and the common terminal of the second resistor R2 and the third resistor R3 is connected to the first resistor R1, and the first resistor R1 is at this time
  • the second resistor R2, the third resistor R3, and the transistor Q1 collectively divide the voltage difference between the terminals K3 and K4.
  • the second resistor R2 The third resistor R3 and the transistor Q1 can change the voltage at the test point 1 to lower the voltage at the test point 1, thereby lowering the input signal voltage value of the control device IC1.
  • the input signal voltage value changes the on and off times of the switching element M1, thereby increasing the voltage difference between the terminals K3 and K4 (ie, the boosting circuit 100)
  • the output voltage is at the first level.
  • the delay circuit inside the programmable device 1 is used for delay, so that the total time at which the voltage difference between the terminals K3 and K4 is maintained at the first level is the preset time value.
  • Time1 causes the output voltage of the booster circuit 100 to be at the first level until the end of the lighting process.
  • the programmable device 1 outputs a low level signal to the triode Q1.
  • the control electrode at this time, the transistor Q1 is turned off, no current flows through the transistor Q1, and the voltage of the test point 1 is determined only by the first resistor R1 and the second resistor R2, and the first resistor R1 and the second resistor R2 The voltage difference between the terminals K3 and K4 is divided.
  • the voltage of the test point 1 can be raised by the pre-configured first resistor R1 and the second resistor R2, that is, the input control device IC1
  • the input voltage signal rises, thereby changing the on and off times of the switching element M1 by changing the input signal voltage value of the control device IC1, and lowering the terminal K3 and the terminal K4
  • the voltage difference between i.e., the output voltage of boost circuit 100 is to a second level, wherein the first level is higher than the second level.
  • the programmable device 1 Outputting a high level signal drives the transistor Q1, thereby lowering the level of the test point 1, and increasing the output voltage of the booster circuit 100 to the first level; while during the normal operation of the ceramic metal halide lamp ballast, Programming device 1 Output low level signal to turn off transistor Q1, so that the level of test point 1 rises and the boost circuit 100 is lowered.
  • the output voltage is at a second level, wherein the first level is higher than the second level.
  • step S1 is a flow chart of a method of controlling a metal halide lamp level according to an embodiment of the present invention.
  • the level control method is from step S1. Start:
  • step S1 the programmable device 600 is directed to the switching circuit 220 according to the operating state of the ceramic metal halide lamp.
  • the communication signal is transmitted to control the communication and disconnection of the switching circuit 220, thereby controlling the voltage division state of the voltage dividing sampling circuit 210 connected to the switching circuit 220.
  • Switch circuit 220 The voltage dividing sampling circuit 210 includes a first resistor R1 and a second resistor R2 connected in series between the positive and negative output terminals of the boosting circuit 100 in sequence, and the voltage dividing state is the second resistor R2. Partial pressure.
  • step S2 the control chip 500 detects the divided voltage of the second resistor R2, and changes the boosting circuit 100 according to the divided voltage of R2. Output voltage.
  • the level control method is from the step 810 begins:
  • step 810 during the startup phase of the ceramic metal halide lamp, the programmable device 600 outputs a connect signal or a turn signal control switch circuit.
  • the connection and disconnection of 220 since the switch circuit 220 has a certain resistance value (can be preset) when connected, the second resistor R2 in the voltage division sampling circuit 210 can be changed.
  • the partial pressure for example, reduces the partial pressure of the second resistor R2.
  • the programmable device 600 when the switch circuit 220 is connected in parallel with the second resistor R2, the programmable device 600 outputs a communication signal to cause the switch circuit 220. Connected. For another example, when the switch circuit 220 is connected in parallel with the first resistor R1, the programmable device 600 outputs an off signal to turn off the switch circuit 220. For another example, the first sub-switch circuit 220A When connected in parallel with the first resistor R1 and the second sub-switch circuit 220B is connected in parallel with the second resistor R2, the programmable device 600 outputs a first off signal to cause the first sub-switch circuit 220A. The first connected signal is disconnected and output to cause the second sub-switch circuit 220B to communicate.
  • the switching circuit 220 is connected in parallel with the second resistor R2 and includes a third resistor R3 and a switching transistor, such as a triode, connected in series in series. Q1.
  • the programmable device 600 is connected to a control electrode of the switch transistor (for example, the base of Q1), and the switch circuit 220 may further include a base and booster circuit 100 connected to the transistor Q1.
  • the first capacitor C1 between the negative outputs.
  • the resistance of R3 can be set in advance as needed. Thus, only the programmable device 600 needs to output a high level signal to the control electrode of the transistor Q1, so that the triode When Q1 is turned on, the switching circuit 220 can be connected to reduce the voltage division of R2.
  • step 820 the control chip 500 controls the boost circuit 100 based on the detected lower partial voltage. Output a higher output voltage.
  • step 830 the programmable device 600 outputs a connected signal or a disconnected signal to control the switching circuit during normal operation of the ceramic metal halide lamp.
  • the connection and disconnection of 220 is the opposite of step 810. Since the switching circuit 220 has a certain resistance value (which can be set in advance) when connected, the voltage dividing sampling circuit 210 can be changed. The partial pressure of the second resistor R2, for example, increases the voltage division of the second resistor R2.
  • the programmable device 600 when the switch circuit 220 is connected in parallel with the second resistor R2, the programmable device 600 outputs an off signal to cause the switch circuit 220. Disconnected. For another example, when the switch circuit 220 is connected in parallel with the first resistor R1, the programmable device 600 outputs a communication signal to cause the switch circuit 220 to communicate. For another example, the first sub-switch circuit 220A When connected in parallel with the first resistor R1 and the second sub-switch circuit 220B is connected in parallel with the second resistor R2, the programmable device 600 outputs a first connected signal to cause the first sub-switch circuit 220A. Connecting and outputting the first disconnection signal causes the second sub-switch circuit 220B to open.
  • a delay circuit or timer can be included in the programmable device 600.
  • Programmable device 600 when the ceramic metal halide lamp is activated
  • the communication and/or disconnection signals may be output for a predetermined period of time according to a timing circuit of the delay circuit or the timer to illuminate the ceramic metal halide lamp, and after a preset period of time, the programmable device 600
  • the output is reversed to lower the output voltage of boost circuit 100.
  • programmable device 600 can maintain an output connected signal and/or turn off the signal for one second to boost boost circuit 100. The output voltage is thus broken down to illuminate the ceramic metal halide lamp.
  • the ballast feedback signal sampling module can also be included, which can analyze the working state of the ceramic metal halide lamp according to the feedback signal of the sampled ballast, thereby enabling the programmable device 600
  • the level is switched according to the operational status information of the ceramic metal halide lamp correspondingly outputting a communication and/or disconnection signal.
  • step 840 the control chip 500 controls the boost circuit 100 based on the detected higher partial voltage. Outputs a lower output voltage.
  • a ceramic metal halide lamp ballast level control method and system for reliably penetrating a ceramic metal halide lamp by varying the output voltage level of the boost circuit. That is, when the metal halide lamp is started, the output voltage of the boosting circuit is maintained at a high level, and when the metal halide lamp is in normal operation, the output voltage of the boosting circuit is maintained at a low level.

Abstract

A ballast level control method and system for a ceramic metal halide lamp is provided. The system includes a control chip (500), a voltage-booster circuit (100), a half-bridge control circuit (300), a driving circuit (400) and a programmable part (600) connected in sequence, and further includes a level switching circuit (200) comprising a voltage sampling circuit (210) and a switching circuit (220). The voltage sampling circuit (210) includes a first resistor (R1) and a second resistor (R2) connected in series between the positive output terminal and the negative output terminal of the voltage-booster circuit (100). The switching circuit (220) has a predetermined resistance when it is turned on. The programmable part (600) outputs a turn-on or turn-off signal to the switching circuit (220) to change the voltage of the second resistor (R2). The control chip (500) detects the voltage of the second resistor (R2) and changes the output voltage of the voltage-booster circuit (100) based on the detected voltage.

Description

一种陶瓷金卤灯镇流器电平控制方法和系统  Ceramic metal halide lamp ballast level control method and system 技术领域  Technical field
本发明涉及灯具的电子镇流器相关领域，尤其涉及一种陶瓷金卤灯镇流器电平控制方法和系统。  The invention relates to the field of electronic ballasts for lamps, and in particular to a method and system for controlling the level of ceramic metal halide lamp ballasts.
背景技术Background technique
随着我国经济的快速发展，能源问题越来越引起人们的重视，节能降耗己经成为当今中国的一项重大战略课题。陶瓷金卤灯作为一种节能、高效的新型光源，越来越显示出其优越性。由于陶瓷金卤灯没有灯丝，因此不会产生因灯丝断裂而报废的问题，使其使用寿命比较长。陶瓷金卤灯的色温从 3000K 到 12000K ，灯的色温越高，对雾和雨的穿透力越差，而在 6000K 左右的光色正好是由白略微开始转蓝的色温，也最接近正午日光的颜色，人眼的接受度及舒适度最高，这样的灯光用在夜间照明上，可以有效减少驾驶人的视觉疲劳。总之，陶瓷金卤灯已广泛应用于家居、广场、码头、车间、道路等室内外照明环境中，在当今照明系统中占有重要的地位。 With the rapid development of China's economy, energy issues have increasingly attracted people's attention, and energy conservation and consumption reduction has become a major strategic issue in China today. As a new energy-saving and high-efficiency light source, ceramic metal halide lamps have increasingly shown their superiority. Since the ceramic metal halide lamp has no filament, there is no problem of scrapping due to filament breakage, resulting in a long service life. The color temperature of ceramic metal halide lamps 3000K to 12000K, the higher the color temperature of the lamp, the worse the penetration of fog and rain, and at 6000K The color of the left and right is just the color temperature from white to blue, and the color closest to noon. The eye's acceptance and comfort are the highest. This kind of light is used in night illumination, which can effectively reduce the driver's visual fatigue. . In short, ceramic metal halide lamps have been widely used in indoor and outdoor lighting environments such as homes, plazas, docks, workshops, roads, etc., and occupy an important position in today's lighting systems.
而电子镇流器是一种电源变换装置，用于将供电电源提供的交流电转换为更高压的直流电或高频交流电。由于陶瓷金卤灯内部是隋性气体，需要 3-6KV 的特高压电流剌激气体发光，从而在两极间形成白色电弧，由于陶瓷金卤灯的这种特殊要求而增加了镇流器设计的复杂性。因此如何更加可靠快速地将陶瓷金卤灯成功击穿点亮是陶瓷金卤灯电子镇流器设计中一项重要的工作。 The electronic ballast is a power conversion device for converting alternating current supplied by a power supply to a higher voltage direct current or high frequency alternating current. Since the inside of the ceramic metal halide lamp is an inert gas, it needs 3-6KV. The UHV current stimulates the gas to illuminate, creating a white arc between the two poles, which increases the complexity of the ballast design due to this particular requirement of the ceramic metal halide lamp. Therefore, how to reliably and quickly break down the ceramic metal halide lamp is an important task in the design of electronic ballasts for ceramic metal halide lamps.
现有陶瓷金卤灯电子镇流器中一般采用单电平升压电路，即在电子镇流器的所有工作状态中，其升压电路的输出电压一直维持在同一电平状态。这种电子镇流器的可靠性较低。图 1 是现有技术中一种单电平电子镇流器的电路图。如图 1 所示，端子 K11 和 K12 是输入端，用于连接供电电源的电极。输入端 K11 和 K12 通过电感器 L11 和开关元件 M11 的串联结构连接。电感器 L11 和开关元件 M11 的公共端连接到二级管 D11 的阳极。端子 K13 与二级管 D11 的阴极连接。端子 K14 与 K12 位于同一电平上。端子 K13 和 K14 通过电阻 R11 和 R12 的串联结构连接。开关元件 M11 的控制电极连接到控制器件 IC11 的输出端。控制器件 IC11 是 APFC （有源功率因数校正器）芯片，用于产生控制信号，该控制信号使开关元件 M11 交替地导通与不导通。电阻 R11 和 R12 的公共端的信号输入至控制器件 IC11 当中。控制器件 IC11 与电感器 L11 、开关元件 M11 、二极管 D11 形成升压（ BOOST ）电路。可编程器件 11 的输出信号控制控制器件 IC12 和灯（即陶瓷金卤灯）。控制器件 IC12 是半桥驱动芯片，其输入端接可编程器件 11 ，输出端分别接开关元件 M12 和 M13 。单电平电子镇流器的结构简单，但是由于它在灯亮前和灯亮后保持同一电压，不利于成功可靠地击穿点亮陶瓷金卤灯。 In the existing ceramic metal halide lamp electronic ballast, a single-level boosting circuit is generally used, that is, in all working states of the electronic ballast, the output voltage of the boosting circuit is maintained at the same level state. This electronic ballast is less reliable. Figure 1 is a circuit diagram of a single level electronic ballast in the prior art. As shown in Figure 1, terminals K11 and K12 are inputs for connecting the electrodes of the power supply. Inputs K11 and K12 It is connected by a series structure of the inductor L11 and the switching element M11. The common terminal of the inductor L11 and the switching element M11 is connected to the anode of the diode D11. Terminal K13 and diode Cathode connection of D11. Terminals K14 and K12 are at the same level. Terminals K13 and K14 are connected by a series connection of resistors R11 and R12. Switching element M11 The control electrode is connected to the output of the control device IC11. The control device IC11 is an APFC (Active Power Factor Corrector) chip for generating a control signal that causes the switching element M11 Alternately conducting and not conducting. The signals at the common terminals of resistors R11 and R12 are input to the control device IC11. Control device IC11 and inductor L11, switching element M11, diode D11 forms a boost (BOOST) circuit. The output signal of the programmable device 11 controls the control device IC12 and the lamp (ie, the ceramic metal halide lamp). Control device IC12 It is a half-bridge driver chip with an input terminal connected to the programmable device 11 and an output terminal connected to the switching elements M12 and M13 respectively. . The single-level electronic ballast has a simple structure, but since it maintains the same voltage before and after the lamp is turned on, it is not conducive to successful and reliable breakdown of the illuminating ceramic metal halide lamp.
发明内容Summary of the invention
本发明要解决的技术问题在于，针对现有技术中只能保持单电平且单电平电子镇流器不利于成功可靠地击穿点亮陶瓷金卤灯的缺陷，提供一种能够实现电平切换的陶瓷金卤灯镇流器电平控制方法，还提供一种能够可靠击穿点亮陶瓷金卤灯的陶瓷金卤灯镇流器电平控制系统。 The technical problem to be solved by the present invention is to provide a method capable of realizing electricity in the prior art that only a single-level and single-level electronic ballast is disadvantageous for successfully and reliably breaking down the defects of the illuminating ceramic metal halide lamp. The flat switching ceramic metal halide lamp ballast level control method also provides a ceramic metal halide lamp ballast level control system capable of reliably breaking down the lighting metal halide lamp.
本发明解决其技术问题所采用的技术方案是： The technical solution adopted by the present invention to solve the technical problem thereof is:
提供一种陶瓷金卤灯镇流器电平控制方法，包括： A ceramic metal halide lamp ballast level control method is provided, including:
S1 、可编程器件根据陶瓷金卤灯的工作状态向开关电路发送连通信号或断开信号，控制与开关电路相连的分压采样电路的分压状态，所述开关电路在连通时具有预设阻值，所述分压采样电路包括依次串联入升压电路的正、负输出端之间的第一电阻和第二电阻，所述分压状态为第二电阻的分压； S1 The programmable device sends a connection signal or a disconnection signal to the switch circuit according to the working state of the ceramic metal halide lamp, and controls a voltage division state of the voltage division sampling circuit connected to the switch circuit, and the switch circuit has a preset resistance value when connected The voltage dividing sampling circuit includes a first resistor and a second resistor sequentially connected in series between the positive and negative output terminals of the boosting circuit, and the divided voltage state is a partial pressure of the second resistor;
S2 、控制芯片检测所述第二电阻的分压，并根据所述分压改变所述升压电路的输出电压。 S2. The control chip detects a partial pressure of the second resistor, and changes an output voltage of the booster circuit according to the divided voltage.
本发明陶瓷金卤灯镇流器电平控制方法中，所述开关电路与所述第二电阻并联，在陶瓷金卤灯的启动阶段，所述可编程器件输出连通信号使所述开关电路连通，所述控制芯片根据检测到的较低分压控制所述升压电路的输出电压至第一电平处，在陶瓷金卤灯的正常工作阶段，所述可编程器件输出断开信号使所述开关电路断开，所述控制芯片根据检测到的较高分压控制所述升压电路的输出电压至第二电平处，其中所述第一电平高于所述第二电平。 In the ceramic metal halide lamp ballast level control method of the present invention, the switch circuit is connected in parallel with the second resistor. In a startup phase of the ceramic metal halide lamp, the programmable device outputs a communication signal to connect the switch circuit. The control chip controls the output voltage of the booster circuit to a first level according to the detected lower partial voltage. In the normal working phase of the ceramic metal halide lamp, the programmable device outputs a disconnection signal. The switching circuit is turned off, and the control chip controls the output voltage of the boosting circuit to a second level according to the detected higher partial voltage, wherein the first level is higher than the second level.
本发明陶瓷金卤灯镇流器电平控制方法中，所述开关电路包括依次串联的第三电阻和开关管，所述可编程器件与所述开关管的控制电极连接。 In the ceramic metal halide lamp ballast level control method of the present invention, the switch circuit includes a third resistor and a switch tube connected in series, and the programmable device is connected to the control electrode of the switch tube.
本发明陶瓷金卤灯镇流器电平控制方法中，所述开关管是三极管，所述可编程器件与所述三极管的基极相连，所述开关电路还包括连接在所述三极管的基极与所述升压电路负输出端之间的第一电容。 In the ceramic metal halide lamp ballast level control method of the present invention, the switch tube is a triode, the programmable device is connected to a base of the triode, and the switch circuit further includes a base connected to the triode a first capacitance between the negative output of the boost circuit.
本发明陶瓷金卤灯镇流器电平控制方法中，在陶瓷金卤灯的启动阶段，所述可编程器件在预设时间段内输出连通信号。 In the ceramic metal halide lamp ballast level control method of the present invention, in the startup phase of the ceramic metal halide lamp, the programmable device outputs a connected signal for a preset period of time.
还提供一种陶瓷金卤灯镇流器电平控制系统，包括依次连接的用于控制升压状态的控制芯片、用于升压变频整流的升压电路、用于保持恒定功率的半桥控制电路、用于提供驱动信号的驱动电路以及用于提供控制信号的可编程器件，还包括分别与所述控制芯片和所述可编程器件相连的电平切换电路，所述电平切换电路包括相连的分压采样电路和用于改变所述分压采样电路的分压状态的开关电路，所述分压采样电路包括依次串联入所述升压电路的正、负输出端之间的第一电阻和第二电阻，所述开关电路在连通时具有预设阻值，所述可编程器件向所述开关电路输出连通信号或断开信号改变所述第二电阻的分压，所述控制芯片检测所述第二电阻的分压并根据所述分压改变所述升压电路的输出电压。 A ceramic metal halide lamp ballast level control system is also provided, comprising a control chip for sequentially controlling a boost state, a boost circuit for boosting variable frequency rectification, and a half bridge control for maintaining constant power. a circuit, a driving circuit for providing a driving signal, and a programmable device for providing a control signal, further comprising a level switching circuit respectively connected to the control chip and the programmable device, the level switching circuit including a voltage dividing sampling circuit and a switching circuit for changing a voltage dividing state of the voltage dividing sampling circuit, the voltage dividing sampling circuit comprising a first resistor sequentially connected in series between the positive and negative output terminals of the boosting circuit And a second resistor, the switch circuit has a predetermined resistance value when connected, the programmable device outputs a communication signal or a disconnection signal to the switching circuit to change a voltage division of the second resistor, and the control chip detects The partial pressure of the second resistor changes the output voltage of the booster circuit according to the divided voltage.
本发明陶瓷金卤灯镇流器电平控制系统中，所述开关电路与所述第二电阻并联，在陶瓷金卤灯的启动阶段，所述可编程器件输出连通信号使所述开关电路连通，所述控制芯片根据检测到的较低分压控制所述升压电路输出较高的输出电压，在陶瓷金卤灯的正常工作阶段，所述可编程器件输出断开信号使所述开关电路断开，所述控制芯片根据检测到的较高分压控制所述升压电路输出较低的输出电压。 In the ceramic metal halide lamp ballast level control system of the present invention, the switch circuit is connected in parallel with the second resistor. In the startup phase of the ceramic metal halide lamp, the programmable device outputs a communication signal to connect the switch circuit. The control chip controls the booster circuit to output a higher output voltage according to the detected lower partial pressure. In a normal working phase of the ceramic metal halide lamp, the programmable device outputs an off signal to cause the switch circuit Disconnected, the control chip controls the booster circuit to output a lower output voltage according to the detected higher partial voltage.
本发明陶瓷金卤灯镇流器电平控制系统中，所述开关电路包括依次串联的第三电阻和开关管，所述可编程器件与所述开关管的控制电极连接。 In the ceramic metal halide lamp ballast level control system of the present invention, the switch circuit includes a third resistor and a switch tube connected in series, and the programmable device is connected to the control electrode of the switch tube.
本发明陶瓷金卤灯镇流器电平控制系统中，所述开关管是三极管，所述可编程器件与所述三极管的基极相连，所述开关电路还包括连接在所述三极管的基极与所述升压电路负输出端之间的第一电容。 In the ceramic metal halide lamp ballast level control system of the present invention, the switch tube is a triode, the programmable device is connected to a base of the triode, and the switch circuit further includes a base connected to the triode a first capacitance between the negative output of the boost circuit.
本发明陶瓷金卤灯镇流器电平控制系统中，所述可编程器件中包括延时电路或定时器，所述可编程器件在预设时间段内输出连通信号。 In the ceramic metal halide lamp ballast level control system of the present invention, the programmable device includes a delay circuit or a timer, and the programmable device outputs a connected signal within a preset time period.
本发明一种陶瓷金卤灯镇流器电平控制方法和系统的有益效果为：通过增加电平切换电路，能够根据陶瓷金卤灯镇流器的不同工作状态，进行升压电路输出电压电平的切换。即在金卤灯启动时，将升压电路输出电压维持在较高的电平第一电平处，而在金卤灯正常工作时，将升压电路输出电压维持在较低的电平第二电平处，且第一电平高于第二电平。本发明可以成功可靠地击穿陶瓷金卤灯。 The beneficial effect of the method and system for controlling the level of the ceramic metal halide lamp ballast is as follows: by increasing the level switching circuit, the output voltage of the boosting circuit can be performed according to different working states of the ceramic metal halide lamp ballast. Flat switch. That is, when the metal halide lamp is started, the output voltage of the boosting circuit is maintained at a first level of a higher level, and when the metal halide lamp is in normal operation, the output voltage of the boosting circuit is maintained at a lower level. At two levels, and the first level is higher than the second level. The invention can successfully and reliably penetrate the ceramic metal halide lamp.
附图说明DRAWINGS
下面将结合附图及实施例对本发明作进一步说明，附图中： The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:
图 1 是现有技术中一种单电平镇流器控制系统的电路图； 1 is a circuit diagram of a single level ballast control system in the prior art;
图 2 是根据本发明一个实施例的切换电平镇流器控制系统的结构示意图； 2 is a schematic structural diagram of a switching level ballast control system according to an embodiment of the present invention;
图 3 是根据本发明第一实施例的实现电平切换的电路的结构示意图； 3 is a schematic structural diagram of a circuit for realizing level switching according to a first embodiment of the present invention;
图 4 是根据本发明第二实施例的实现电平切换的电路的结构示意图； 4 is a schematic structural diagram of a circuit for realizing level switching according to a second embodiment of the present invention;
图 5 是根据本发明第三实施例的实现电平切换的电路的结构示意图； FIG. 5 is a schematic structural diagram of a circuit for realizing level switching according to a third embodiment of the present invention; FIG.
图 6 是根据本发明一个优选实施例的切换电平镇流器控制系统的电路图； 6 is a circuit diagram of a switching level ballast control system in accordance with a preferred embodiment of the present invention;
图 7 是根据本发明一个实施例的陶瓷金卤灯镇流器电平控制方法的流程图； 7 is a flow chart of a method for controlling a level of a ceramic metal halide lamp ballast according to an embodiment of the present invention;
图 8 是根据本发明另一个实施例的陶瓷金卤灯镇流器电平控制方法的流程图。 8 is a flow chart of a method for controlling a level of a ceramic metal halide lamp ballast in accordance with another embodiment of the present invention.
具体实施方式detailed description
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。 The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
图 2 是根据本发明一个实施例的切换电平镇流器控制系统的结构示意图。在本实施例中，切换电平镇流器控制系统 包括升压电路 100 、电平切换电路 200 、半桥控制电路 300 、驱动电路 400 、控制芯片 500 和可编程器件 600 。控制芯片 500 、升压电路 100 、半桥控制电路 300 、驱动电路 400 以及可编程器件 600 依次相连，且电平切换电路 200 分别与控制芯片 500 和可编程器件 600 相连。驱动电路 400 与 镇流器控制系统 的相关器件相连以提供驱动信号。 2 is a block diagram showing the structure of a switching level ballast control system in accordance with one embodiment of the present invention. In this embodiment, the switching level ballast control system The booster circuit 100, the level shifting circuit 200, the half bridge control circuit 300, the driving circuit 400, the control chip 500, and the programmable device 600 are included. Control chip 500 The boosting circuit 100, the half-bridge control circuit 300, the driving circuit 400, and the programmable device 600 are sequentially connected, and the level switching circuit 200 is respectively associated with the control chip 500 and the programmable device 600 connected. Drive circuit 400 is coupled to associated devices of the ballast control system to provide drive signals.
电平切换电路 200 可以包括相连的分压采样电路 210 和用于改变分压采样电路 210 的分压状态的开关电路 220 。 The level switching circuit 200 may include a connected voltage dividing sampling circuit 210 and a change voltage dividing sampling circuit 210. The switching circuit 220 of the divided state.
分压采样电路 210 包括依次串联入升压电路 100 的正、负输出端之间的第一电阻 R1 和第二电阻 R2 。分压电路 210 用于给控制芯片 500 提供分压信号，例如给控制器件 IC1 提供输入电压，以控制升压电路 100 的输出电压。第一电阻 R1 和第二电阻 R2 的阻值可以根据需要进行设置。 The voltage dividing sampling circuit 210 includes a first resistor R1 and a second resistor sequentially connected in series between the positive and negative output terminals of the boosting circuit 100. R2. The voltage dividing circuit 210 is used to provide a voltage dividing signal to the control chip 500, for example, to provide an input voltage to the control device IC1 to control the output voltage of the boosting circuit 100. First resistance R1 The resistance of the second resistor R2 can be set as needed.
开关电路 220 在连通时具有预设的电阻值（该电阻值能够使第二电阻 R2 得到期望的分压），在断开时等效于开路。可编程器件 600 可以向开关电路 220 输出连通信号或断开信号以改变第二电阻 R2 的分压。例如，连通信号为高电平信号，断开信号为低电平信号，但是，这仅仅用于举例说明，而不用于限制本发明，在本发明的其它实施例中，还可以包括其它类型的连通信号或断开信号，例如连通信号为低电平信号而断开信号为高电平信号。 The switch circuit 220 has a preset resistance value when connected (the resistance value enables the second resistor R2 The desired partial pressure is obtained, which is equivalent to an open circuit when disconnected. The programmable device 600 can output a connect signal or a disconnect signal to the switch circuit 220 to change the second resistor R2. Partial pressure. For example, the connected signal is a high level signal and the open signal is a low level signal, but this is for illustrative purposes only and is not intended to limit the invention. In other embodiments of the invention, other types may also be included. The connected signal or the disconnected signal, for example, the connected signal is a low level signal and the disconnected signal is a high level signal.
控制芯片 500 可以用于检测分压采样电路 210 的分压状态并根据其分压状态控制升压电路 100 输出端的输出电压。例如，升压电路 100 可以包括依次串联在镇流器的正负输入端之间的第一电感 L1 和开关元件 M1 ，控制芯片 500 （例如 IC1 ）的一端与开关元件 M1 的控制电极相连。控制芯片 500 （例如 IC1 ）可以是 APFC （ Active Power Factor Corrector ，有源功率因数校正器）控制芯片，以便提高功率因数。在这个例子中， IC1 可以将第二电阻 R2 的分压作为输入电压，并根据该输入电压改变开关元件 M1 的导通与关断时间，从而改变升压电路 100 的输出电压。例如， IC1 的输出电压随输入电压的增加而增加，并通过开关元件 M1 降低升压电路 100 的输出电压。但是，这仅仅是本发明的一个实施例，而不用于限制本发明，在本发明的其它实施例中，还可以包括具有类似功能的其它电路结构。 The control chip 500 can be used to detect the divided state of the voltage dividing sampling circuit 210 and control the boosting circuit 100 according to its voltage dividing state. The output voltage at the output. For example, boost circuit 100 can include a first inductor L1 and a switching element M1 that are sequentially connected in series between the positive and negative inputs of the ballast, and control chip 500 (e.g., IC1) One end is connected to the control electrode of the switching element M1. The control chip 500 (eg IC1) can be an APFC (Active Power Factor Corrector) The active power factor corrector) controls the chip to increase the power factor. In this example, IC1 can use the divided voltage of the second resistor R2 as the input voltage, and change the switching element M1 according to the input voltage. The turn-on and turn-off times change the output voltage of the booster circuit 100. For example, the output voltage of IC1 increases as the input voltage increases, and the booster circuit 100 is lowered by the switching element M1. Output voltage. However, this is merely one embodiment of the present invention and is not intended to limit the present invention, and other circuit configurations having similar functions may also be included in other embodiments of the present invention.
升压电路 100 可以用于升压变频整流。半桥控制电路 300 可以用于保持恒定功率。驱动电路 400 与电子镇流器中的相关器件（例如 MOS 管）相连，用于提供驱动信号驱动这些相关器件。可编程器件 600 可以用于提供控制信号。例如，驱动电路 400 可以与可编程器件 600 相连，由可编程器件 600 对其进行控制。 The booster circuit 100 can be used for boost converter rectification. The half bridge control circuit 300 can be used to maintain constant power. Drive circuit 400 Connected to related devices in the electronic ballast (such as MOS transistors) to provide drive signals to drive these related devices. Programmable device 600 can be used to provide control signals. For example, the drive circuit 400 It can be connected to programmable device 600 and controlled by programmable device 600.
在工作过程中，启动陶瓷金卤灯时，可编程器件 600 向开关电路 220 输出连通信号或断开信号改变第二电阻的分压（例如降低第二电阻的分压），控制芯片 500 根据检测到的第二电阻的相应分压（例如较低的分压）提高升压电路 100 输出端的输出电压。陶瓷金卤灯启动后正常工作时，可编程器件 600 向开关电路 220 输出连通信号或断开信号改变第二电阻的分压（例如提高第二电阻的分压），控制芯片 500 根据检测到的第二电阻的相应分压（例如较高的分压）降低升压电路 100 输出端的输出电压。 During the operation, when the ceramic metal halide lamp is activated, the programmable device 600 is turned to the switching circuit 220 The output connected signal or the open signal changes the partial pressure of the second resistor (eg, reduces the divided voltage of the second resistor), and the control chip 500 increases the boost according to the corresponding partial pressure of the detected second resistance (eg, a lower partial pressure). Circuit 100 The output voltage at the output. When the ceramic metal halide lamp is started normally, the programmable device 600 is turned to the switch circuit 220 The output connected signal or the open signal changes the partial pressure of the second resistor (for example, increases the partial pressure of the second resistor), and the control chip 500 reduces the boost according to the corresponding partial pressure of the detected second resistor (eg, a higher partial pressure). Circuit 100 The output voltage at the output.
本发明通过增加电平切换电路，能够根据陶瓷金卤灯镇流器的不同工作状态，进行升压电路输出电压电平的切换。即在金卤灯启动时，将升压电路输出电压维持在较高的电平第一电平处，而在金卤灯正常工作时，将升压电路输出电压维持在较低的电平第二电平处，且第一电平高于第二电平。本发明可以成功可靠地击穿陶瓷金卤灯。 By increasing the level switching circuit, the present invention can switch the output voltage level of the booster circuit according to different operating states of the ceramic metal halide lamp ballast. That is, when the metal halide lamp is started, the output voltage of the boosting circuit is maintained at a first level of a higher level, and when the metal halide lamp is in normal operation, the output voltage of the boosting circuit is maintained at a lower level. At two levels, and the first level is higher than the second level. The invention can successfully and reliably penetrate the ceramic metal halide lamp.
图 3 是根据本发明第一实施例的实现电平切换的电路的结构示意图。在本实施例中，实现电平切换的电路 包括升压电路 100 、控制芯片 500 、电平切换电路 200 和可编程器件 600 ，电平切换电路 200 又包括分压采样电路 210 和开关电路 220 。升压电路 100 、分压采样电路 210 、控制芯片 500 和可编程器件 600 已经参考图 2 进行了详细描述。开关电路 220 与第二电阻 R2 并联。 3 is a schematic structural diagram of a circuit for realizing level switching according to a first embodiment of the present invention. In this embodiment, a circuit for level switching is implemented. The boosting circuit 100, the control chip 500, the level switching circuit 200, and the programmable device 600, the level switching circuit 200 further includes a voltage dividing sampling circuit 210 and a switching circuit 220. . The booster circuit 100, the voltage divider sampling circuit 210, the control chip 500, and the programmable device 600 have been described in detail with reference to FIG. Switch circuit 220 and second resistor R2 Parallel.
开关电路 220 可以包括依次串联的第三电阻 R3 和开关管，可编程器件 600 与开关管的控制电极连接。例如，开关管是三极管 Q1 ，可编程器件 600 与三极管 Q1 的基极相连，开关电路 220 还可以包括连接在三极管 Q1 的基极与升压电路 100 的负输出端之间的第一电容 C1 。另外，第三电阻 R3 的阻值可以根据需要预先进行设置。但是，这仅仅是本发明的一个实施例，而不用于限制本发明，在本发明的其它实施例中，还可以包括具有类似功能的其它电路结构，例如开关管还可以是场效应管等。 Switching circuit 220 can include a third resistor R3 and a switching transistor in series, in series, programmable device 600 Connected to the control electrode of the switch tube. For example, the switch transistor is a transistor Q1, the programmable device 600 is connected to the base of the transistor Q1, and the switch circuit 220 can also include a transistor Q1. The first capacitor C1 between the base and the negative output of the boost circuit 100. In addition, the third resistor R3 The resistance can be set in advance as needed. However, this is merely an embodiment of the present invention and is not intended to limit the present invention. In other embodiments of the present invention, other circuit structures having similar functions may be included, such as a switch tube or a field effect transistor.
在一个示例性工作过程中，在陶瓷金卤灯的启动阶段，可编程器件 600 输出连通信号使开关电路 220 连通，控制芯片 500 根据检测到的较低分压控制升压电路 100 输出较高的输出电压第一电平处。在陶瓷金卤灯的正常工作阶段，可编程器件 600 输出断开信号使开关电路 220 断开，控制芯片 500 根据检测到的较高分压控制升压电路 100 输出较低的输出电压第二电平处，其中第一电平高于第二电平。其中，连通信号可以是高电平信号，断开信号可以是低电平信号。 In an exemplary operation, during the startup phase of the ceramic metal halide lamp, the programmable device 600 outputs a connected signal to cause the switching circuit 220 Connected, the control chip 500 controls the booster circuit 100 to output a higher output voltage at the first level based on the detected lower partial voltage. In the normal working phase of a ceramic metal halide lamp, the programmable device 600 The output disconnection signal causes the switch circuit 220 to be turned off, and the control chip 500 controls the booster circuit 100 based on the detected higher partial voltage. A lower output voltage is output at a second level, wherein the first level is higher than the second level. The connected signal may be a high level signal, and the open signal may be a low level signal.
图 4 是根据本发明第二实施例的实现电平切换的电路的结构示意图。在本实施例中，实现电平切换的电路 包括升压电路 100 、控制芯片 500 、电平切换电路 200 和可编程器件 600 ，电平切换电路 200 又包括分压采样电路 210 和开关电路 220 。升压电路 100 、分压采样电路 210 、控制芯片 500 和可编程器件 600 已经参考图 2 进行了详细描述。开关电路 220 与第一电阻 R1 并联。 4 is a schematic structural diagram of a circuit for realizing level switching according to a second embodiment of the present invention. In this embodiment, a circuit for level switching is implemented. The boosting circuit 100, the control chip 500, the level switching circuit 200, and the programmable device 600, the level switching circuit 200 further includes a voltage dividing sampling circuit 210 and a switching circuit 220. . The booster circuit 100, the voltage divider sampling circuit 210, the control chip 500, and the programmable device 600 have been described in detail with reference to FIG. Switch circuit 220 and first resistor R1 Parallel.
在一个示例性工作过程中，在陶瓷金卤灯的启动阶段，可编程器件 600 输出断开信号使开关电路 220 断开，控制芯片 500 根据检测到的较低分压控制升压电路 100 输出较高的输出电压第一电平处。在陶瓷金卤灯的正常工作阶段，可编程器件 600 输出连通信号使开关电路 220 连通，控制芯片 500 根据检测到的较高分压控制升压电路 100 输出较低的输出电压第二电平处，其中第一电平高于第二电平。其中，连通信号可以是高电平信号，断开信号可以是低电平信号。 In an exemplary operation, during the startup phase of the ceramic metal halide lamp, the programmable device 600 outputs an off signal to cause the switching circuit 220 Disconnected, the control chip 500 controls the booster circuit 100 to output a higher output voltage at the first level based on the detected lower partial voltage. In the normal working phase of a ceramic metal halide lamp, the programmable device 600 The output connected signal causes the switching circuit 220 to communicate, and the control chip 500 controls the boosting circuit 100 according to the detected higher partial voltage. A lower output voltage is output at a second level, wherein the first level is higher than the second level. The connected signal may be a high level signal, and the open signal may be a low level signal.
图 5 是根据本发明第三实施例的实现电平切换的电路的结构示意图。在本实施例中，实现电平切换的电路 包括升压电路 100 、控制芯片 500 、电平切换电路 200 和可编程器件 600 ，电平切换电路 200 又包括分压采样电路 210 和开关电路 220 。升压电路 100 、分压采样电路 210 、控制芯片 500 和可编程器件 600 已经参考图 2 进行了详细描述。开关电路 220 又包括第一子开关电路 220A 和第二子开关电路 220B ，第一子开关电路 220A 与第一电阻 R1 并联，且第二子开关电路 220B 与第二电阻 R2 并联。 FIG. 5 is a schematic structural diagram of a circuit for realizing level switching according to a third embodiment of the present invention. In this embodiment, a circuit for level switching is implemented. The boosting circuit 100, the control chip 500, the level switching circuit 200, and the programmable device 600, the level switching circuit 200 further includes a voltage dividing sampling circuit 210 and a switching circuit 220. . The booster circuit 100, the voltage divider sampling circuit 210, the control chip 500, and the programmable device 600 have been described in detail with reference to FIG. The switch circuit 220 further includes a first sub-switch circuit 220A and the second sub-switch circuit 220B, the first sub-switch circuit 220A is connected in parallel with the first resistor R1, and the second sub-switch circuit 220B is connected in parallel with the second resistor R2.
在一个示例性工作过程中，在陶瓷金卤灯的启动阶段，可编程器件 600 输出第一断开信号使第一子开关电路 220A 断开并输出第一连通信号使第二子开关电路 220B 连通，控制芯片 500 根据检测到的较低分压控制升压电路 100 输出较高的输出电压第一电平处。在陶瓷金卤灯的正常工作阶段，可编程器件 600 输出第二连通信号使第一子开关电路 220A 连通并输出第二断开信号使第二子开关 131B 断开，控制芯片 500 根据检测到的较高分压控制升压电路 100 输出较低的输出电压第二电平处，其中第一电平高于第二电平。其中，第一和第二连通信号可以是高电平信号，第一和第二断开信号可以是低电平信号。 In an exemplary operation, during the startup phase of the ceramic metal halide lamp, the programmable device 600 outputs a first off signal to cause the first sub-switch circuit 220A disconnects and outputs a first connected signal to cause the second sub-switch circuit 220B to communicate, and the control chip 500 controls the boosting circuit 100 according to the detected lower partial voltage. The higher output voltage is output at the first level. During normal operation of the ceramic metal halide lamp, the programmable device 600 outputs a second connected signal to cause the first sub-switch circuit 220A to communicate and output a second disconnect signal to cause the second sub-switch The 131B is disconnected, and the control chip 500 controls the booster circuit 100 according to the detected higher partial voltage. A lower output voltage is output at a second level, wherein the first level is higher than the second level. The first and second connected signals may be high level signals, and the first and second open signals may be low level signals.
在图 2-5 所示的实施例中，可编程器件 600 中可以包括延时电路或定时器，可编程器件 600 可以根据其中的延时电路或定时器在预设时间段内输出连通和 / 或断开信号。例如，保持输出连通信号和 / 或断开信号 1 秒钟，以便击穿点亮陶瓷金卤灯。可编程器件 600 中还可以包括镇流器反馈信号采样模块，它可以根据所采样的镇流器的反馈信号来分析陶瓷金卤灯的工作状态，从而使可编程器件 600 根据陶瓷金卤灯的工作状态信息相应地输出连通和 / 或断开信号。 In the embodiment shown in Figures 2-5, the programmable device 600 can include a delay circuit or timer, programmable device 600. The communication and/or disconnection signals may be output for a preset period of time according to a delay circuit or a timer therein. For example, keep the output connected signal and / or turn off the signal for 1 second to break through the lit metal halide lamp. Programmable device The 600 can also include a ballast feedback signal sampling module that can analyze the operating state of the ceramic metal halide lamp based on the feedback signal of the sampled ballast, thereby enabling the programmable device 600 According to the working state information of the ceramic metal halide lamp, the communication and/or disconnection signals are correspondingly output.
图 6 是根据本发明一个优选实施例的切换电平镇流器控制系统的电路图。在本实施例中，端子 K1 和 K2 分别是正、负输入端，用于连接供电电源的电极。电感 L1 和开关元件 M1 串联接入正、负输入端 K1 和 K2 之间。电感 L1 和开关元件 M1 的公共端连接到二级管 D1 的阳极，端子 K3 与二级管 D1 的阴极连接，这里二极管 D1 作为整流器件。端子 K4 与 K2 属于同一电平上，且端子 K3 和 K4 通过第一电阻 R1 和第二电阻 R2 的串联结构连接。端子 K3 和 K4 分别为升压电路 100 的正、负输出端。开关元件 M1 的控制电极连接到控制器件 IC1 的输出端。控制器件 IC1 是用于产生控制信号的控制芯片（例如 APFC 芯片），该控制信号使开关元件 M1 交替地导通与不导通。第一电阻 R1 和第二电阻 R2 的公共端即测试点 1 的信号输入至控制器件 IC1 当中。测试点 1 处于第一电阻 R1 、第二电阻 R2 和第三电阻 R3 的公共端，测试点 1 通过第三电阻 R3 及三极管 Q1 的串联结构连接到端子 K4 。三极管 Q1 的控制电极通过电容 C1 连接至端子 K4 ，三极管 Q1 的控制电极由可编程器件 1 的输出信号控制。可编程器件 1 同时也输出信号控制控制器件 IC2 （即驱动电路）和灯（即陶瓷金卤灯）。控制器件 IC2 可以是半桥驱动芯片，其输入端接可编程器件 1 ，输出端分别接半桥控制电路中的开关元件 M2 和 M3 。 6 is a circuit diagram of a switching level ballast control system in accordance with a preferred embodiment of the present invention. In this embodiment, terminals K1 and K2 They are positive and negative inputs for connecting the electrodes of the power supply. Inductor L1 and switching element M1 are connected in series between positive and negative inputs K1 and K2. Inductor L1 and switching element M1 The common terminal is connected to the anode of diode D1, and terminal K3 is connected to the cathode of diode D1, where diode D1 acts as a rectifying device. Terminals K4 and K2 are at the same level and terminal K3 And K4 are connected by a series structure of a first resistor R1 and a second resistor R2. Terminals K3 and K4 are the positive and negative outputs of boost circuit 100, respectively. Switching element M1 The control electrode is connected to the output of the control device IC1. The control device IC1 is a control chip (for example, an APFC chip) for generating a control signal, and the control signal causes the switching element M1 Alternately conducting and not conducting. The common terminal of the first resistor R1 and the second resistor R2, that is, the signal of the test point 1 is input to the control device IC1. Test point 1 is at the first resistor R1, the second resistor The common terminal of R2 and the third resistor R3, the test point 1 is connected to the terminal K4 through the series connection of the third resistor R3 and the transistor Q1. The control electrode of the transistor Q1 passes through the capacitor C1 Connected to terminal K4, the control electrode of transistor Q1 is controlled by the output signal of programmable device 1. Programmable device 1 also outputs signal control and control device IC2 (ie drive circuit) and lamp (ie ceramic metal halide lamp). The control device IC2 can be a half-bridge driver chip, and its input terminal is connected to the programmable device 1 , and the output terminal is respectively connected to the switching elements M2 and M3 in the half-bridge control circuit. .
在陶瓷金卤灯的启动阶段，可编程器件 1 输出高电平信号至三极管 Q1 ，使三极管 Q1 导通，电流流过三极管 Q1 ，三极管 Q1 与第三电阻 R3 串联，第二电阻 R2 与第三电阻 R3 的公共端连接至第一电阻 R1 ，此时由第一电阻 R1 、第二电阻 R2 、第三电阻 R3 和三极管 Q1 共同对端子 K3 和 K4 之间的电压差值进行分压。通过预先配置的第一电阻 R1 、第二电阻 R2 、第三电阻 R3 和三极管 Q1 可以改变测试点 1 的电压，使测试点 1 的电压值降低，从而降低控制器件 IC1 的输入信号电压值。从而通过控制器件 IC1 的输入信号电压值改变开关元件 M1 的导通与关断时间，进而提高端子 K3 与 K4 之间的电压差值（即升压电路 100 的输出电压）至第一电平处。此时利用可编程器件 1 内部的延时电路进行延时，使端子 K3 与 K4 之间的电压差值维持在第一电平处的总共时间为预设时间值 Time1 ，使升压电路 100 的输出电压处于第一电平处直至点灯过程结束。 在陶瓷金卤灯镇流器正常工作时，可编程器件 1 输出低电平信号至三极管 Q1 的控制电极，此时三极管 Q1 截止，无电流流过三极管 Q1 ，测试点 1 的电压仅由第一电阻 R1 和第二电阻 R2 决定，第一电阻 R1 与第二电阻 R2 对端子 K3 及 K4 之间的电压差值进行分压，此时可以通过预先配置的第一电阻 R1 及第二电阻 R2 使测试点 1 的电压值升高，即输入控制器件 IC1 的输入电压信号升高，从而通过改变控制器件 IC1 的输入信号电压值改变开关元件 M1 的导通与关断时间，降低端子 K3 与端子 K4 之间的电压差值（即升压电路 100 的输出电压）至第二电平处，其中第一电平高于第二电平。 During the startup phase of the ceramic metal halide lamp, the programmable device 1 outputs a high level signal to the transistor Q1 to make the transistor Q1 Conduction, current flows through the transistor Q1, the transistor Q1 is connected in series with the third resistor R3, and the common terminal of the second resistor R2 and the third resistor R3 is connected to the first resistor R1, and the first resistor R1 is at this time The second resistor R2, the third resistor R3, and the transistor Q1 collectively divide the voltage difference between the terminals K3 and K4. Through the pre-configured first resistor R1, the second resistor R2 The third resistor R3 and the transistor Q1 can change the voltage at the test point 1 to lower the voltage at the test point 1, thereby lowering the input signal voltage value of the control device IC1. Thus by controlling the device IC1 The input signal voltage value changes the on and off times of the switching element M1, thereby increasing the voltage difference between the terminals K3 and K4 (ie, the boosting circuit 100) The output voltage) is at the first level. At this time, the delay circuit inside the programmable device 1 is used for delay, so that the total time at which the voltage difference between the terminals K3 and K4 is maintained at the first level is the preset time value. Time1 causes the output voltage of the booster circuit 100 to be at the first level until the end of the lighting process. When the ceramic metal halide lamp ballast is working normally, the programmable device 1 outputs a low level signal to the triode Q1. The control electrode, at this time, the transistor Q1 is turned off, no current flows through the transistor Q1, and the voltage of the test point 1 is determined only by the first resistor R1 and the second resistor R2, and the first resistor R1 and the second resistor R2 The voltage difference between the terminals K3 and K4 is divided. At this time, the voltage of the test point 1 can be raised by the pre-configured first resistor R1 and the second resistor R2, that is, the input control device IC1 The input voltage signal rises, thereby changing the on and off times of the switching element M1 by changing the input signal voltage value of the control device IC1, and lowering the terminal K3 and the terminal K4 The voltage difference between (i.e., the output voltage of boost circuit 100) is to a second level, wherein the first level is higher than the second level.
本实施例中，根据陶瓷金卤灯镇流器工作状态的不同，在陶瓷金卤灯击穿之前，通过可编程器件 1 输出高电平信号驱动三极管 Q1 ，从而使测试点 1 的电平降低，提高升压电路 100 的输出电压至第一电平处；而在陶瓷金卤灯镇流器的正常工作期间，由可编程器件 1 输出低电平信号使三极管 Q1 截止，从而使测试点 1 的电平升高，降低升压电路 100 的输出电压至第二电平处，其中第一电平高于第二电平。通过切换电平的方式，可以成功可靠地击穿陶瓷金卤灯。 In this embodiment, according to the working state of the ceramic metal halide lamp ballast, before the breakdown of the ceramic metal halide lamp, through the programmable device 1 Outputting a high level signal drives the transistor Q1, thereby lowering the level of the test point 1, and increasing the output voltage of the booster circuit 100 to the first level; while during the normal operation of the ceramic metal halide lamp ballast, Programming device 1 Output low level signal to turn off transistor Q1, so that the level of test point 1 rises and the boost circuit 100 is lowered. The output voltage is at a second level, wherein the first level is higher than the second level. By switching the level, the ceramic metal halide lamp can be successfully and reliably broken.
图 7 是根据本发明一个实施例的陶瓷金卤灯电平控制方法的流程图。在本实施例中，电平控制方法从步骤 S1 开始： 7 is a flow chart of a method of controlling a metal halide lamp level according to an embodiment of the present invention. In this embodiment, the level control method is from step S1. Start:
在步骤 S1 中，可编程器件 600 根据陶瓷金卤灯的工作状态向开关电路 220 发送连通信号，控制开关电路 220 的连通和断开，从而控制与开关电路 220 相连的分压采样电路 210 的分压状态。开关电路 220 在连通时具有预设阻值，分压采样电路 210 包括依次串联入升压电路 100 的正、负输出端之间的第一电阻 R1 和第二电阻 R2 ，分压状态为第二电阻 R2 的分压。 In step S1, the programmable device 600 is directed to the switching circuit 220 according to the operating state of the ceramic metal halide lamp. The communication signal is transmitted to control the communication and disconnection of the switching circuit 220, thereby controlling the voltage division state of the voltage dividing sampling circuit 210 connected to the switching circuit 220. Switch circuit 220 The voltage dividing sampling circuit 210 includes a first resistor R1 and a second resistor R2 connected in series between the positive and negative output terminals of the boosting circuit 100 in sequence, and the voltage dividing state is the second resistor R2. Partial pressure.
在步骤 S2 中，控制芯片 500 检测第二电阻 R2 的分压，并根据 R2 的分压改变升压电路 100 的输出电压。 In step S2, the control chip 500 detects the divided voltage of the second resistor R2, and changes the boosting circuit 100 according to the divided voltage of R2. Output voltage.
图 8 是根据本发明另一个实施例的陶瓷金卤灯镇流器电平控制方法的流程图。在本实施例中，电平控制方法从步骤 810 开始： 8 is a flow chart of a method for controlling a level of a ceramic metal halide lamp ballast in accordance with another embodiment of the present invention. In this embodiment, the level control method is from the step 810 begins:
在步骤 810 中，在陶瓷金卤灯的启动阶段，可编程器件 600 输出连通信号或断开信号控制开关电路 220 的连通与断开，由于开关电路 220 在连通时具有一定的电阻值（可以预先设置），从而可以改变分压采样电路 210 中第二电阻 R2 的分压，例如降低第二电阻 R2 的分压。 In step 810, during the startup phase of the ceramic metal halide lamp, the programmable device 600 outputs a connect signal or a turn signal control switch circuit. The connection and disconnection of 220, since the switch circuit 220 has a certain resistance value (can be preset) when connected, the second resistor R2 in the voltage division sampling circuit 210 can be changed. The partial pressure, for example, reduces the partial pressure of the second resistor R2.
例如，开关电路 220 与第二电阻 R2 并联时，可编程器件 600 输出连通信号使开关电路 220 连通。又例如，开关电路 220 与第一电阻 R1 并联时，可编程器件 600 输出断开信号使开关电路 220 断开。又例如，第一子开关电路 220A 与第一电阻 R1 并联且第二子开关电路 220B 与第二电阻 R2 并联时，可编程器件 600 输出第一断开信号使第一子开关电路 220A 断开并输出第一连通信号使第二子开关电路 220B 连通。 For example, when the switch circuit 220 is connected in parallel with the second resistor R2, the programmable device 600 outputs a communication signal to cause the switch circuit 220. Connected. For another example, when the switch circuit 220 is connected in parallel with the first resistor R1, the programmable device 600 outputs an off signal to turn off the switch circuit 220. For another example, the first sub-switch circuit 220A When connected in parallel with the first resistor R1 and the second sub-switch circuit 220B is connected in parallel with the second resistor R2, the programmable device 600 outputs a first off signal to cause the first sub-switch circuit 220A. The first connected signal is disconnected and output to cause the second sub-switch circuit 220B to communicate.
优选地，开关电路 220 与第二电阻 R2 并联，且包括依次串联的第三电阻 R3 和开关管，例如三极管 Q1 。可编程器件 600 与开关管的控制电极（例如 Q1 的基极）连接，开关电路 220 还可以包括连接在三极管 Q1 的基极与升压电路 100 的负输出端之间的第一电容 C1 。 R3 的电阻可以预先根据需要进行设置。这样，只需 可编程器件 600 输出高电平信号至三极管 Q1 的控制电极，使三极管 Q1 导通，就可以连通开关电路 220 ，从而降低 R2 的分压。 Preferably, the switching circuit 220 is connected in parallel with the second resistor R2 and includes a third resistor R3 and a switching transistor, such as a triode, connected in series in series. Q1. The programmable device 600 is connected to a control electrode of the switch transistor (for example, the base of Q1), and the switch circuit 220 may further include a base and booster circuit 100 connected to the transistor Q1. The first capacitor C1 between the negative outputs. The resistance of R3 can be set in advance as needed. Thus, only the programmable device 600 needs to output a high level signal to the control electrode of the transistor Q1, so that the triode When Q1 is turned on, the switching circuit 220 can be connected to reduce the voltage division of R2.
在步骤 820 中，控制芯片 500 根据检测到的较低分压控制升压电路 100 输出较高的输出电压。 In step 820, the control chip 500 controls the boost circuit 100 based on the detected lower partial voltage. Output a higher output voltage.
在步骤 830 中， 在陶瓷金卤灯的正常工作阶段，可编程器件 600 输出连通信号或断开信号控制开关电路 220 的连通与断开，该控制过程与步骤 810 相反。由于开关电路 220 在连通时具有一定的电阻值（可以预先设置），从而可以改变分压采样电路 210 中第二电阻 R2 的分压，例如升高第二电阻 R2 的分压。 In step 830, the programmable device 600 outputs a connected signal or a disconnected signal to control the switching circuit during normal operation of the ceramic metal halide lamp. The connection and disconnection of 220 is the opposite of step 810. Since the switching circuit 220 has a certain resistance value (which can be set in advance) when connected, the voltage dividing sampling circuit 210 can be changed. The partial pressure of the second resistor R2, for example, increases the voltage division of the second resistor R2.
例如，开关电路 220 与第二电阻 R2 并联时，可编程器件 600 输出断开信号使开关电路 220 断开。又例如，开关电路 220 与第一电阻 R1 并联时，可编程器件 600 输出连通信号使开关电路 220 连通。又例如，第一子开关电路 220A 与第一电阻 R1 并联且第二子开关电路 220B 与第二电阻 R2 并联时，可编程器件 600 输出第一连通信号使第一子开关电路 220A 连通并输出第一断开信号使第二子开关电路 220B 断开。 For example, when the switch circuit 220 is connected in parallel with the second resistor R2, the programmable device 600 outputs an off signal to cause the switch circuit 220. Disconnected. For another example, when the switch circuit 220 is connected in parallel with the first resistor R1, the programmable device 600 outputs a communication signal to cause the switch circuit 220 to communicate. For another example, the first sub-switch circuit 220A When connected in parallel with the first resistor R1 and the second sub-switch circuit 220B is connected in parallel with the second resistor R2, the programmable device 600 outputs a first connected signal to cause the first sub-switch circuit 220A. Connecting and outputting the first disconnection signal causes the second sub-switch circuit 220B to open.
可编程器件 600 中可以包括延时电路或定时器。当陶瓷金卤灯启动时，可编程器件 600 可以根据其中的延时电路或定时器的定时配置在预设时间段内输出连通和 / 或断开信号以便点亮陶瓷金卤灯，到达预设时间段后，可编程器件 600 的输出反向以便降低升压电路 100 的输出电压。例如，可编程器件 600 可以保持输出连通信号和 / 或断开信号 1 秒钟以便升高升压电路 100 的输出电压，从而击穿点亮陶瓷金卤灯。可编程器件 600 中还可以包括镇流器反馈信号采样模块，它可以根据所采样的镇流器的反馈信号来分析陶瓷金卤灯的工作状态，从而可以使可编程器件 600 根据陶瓷金卤灯的工作状态信息相应地输出连通和 / 或断开信号来切换电平。 A delay circuit or timer can be included in the programmable device 600. Programmable device 600 when the ceramic metal halide lamp is activated The communication and/or disconnection signals may be output for a predetermined period of time according to a timing circuit of the delay circuit or the timer to illuminate the ceramic metal halide lamp, and after a preset period of time, the programmable device 600 The output is reversed to lower the output voltage of boost circuit 100. For example, programmable device 600 can maintain an output connected signal and/or turn off the signal for one second to boost boost circuit 100. The output voltage is thus broken down to illuminate the ceramic metal halide lamp. Programmable device 600 The ballast feedback signal sampling module can also be included, which can analyze the working state of the ceramic metal halide lamp according to the feedback signal of the sampled ballast, thereby enabling the programmable device 600 The level is switched according to the operational status information of the ceramic metal halide lamp correspondingly outputting a communication and/or disconnection signal.
在步骤 840 中， 控制芯片 500 根据检测到的较高分压控制升压电路 100 输出较低的输出电压。 In step 840, the control chip 500 controls the boost circuit 100 based on the detected higher partial voltage. Outputs a lower output voltage.
在本发明的各种实施例中，提供了一种陶瓷金卤灯镇流器电平控制方法和系统，通过改变升压电路输出电压电平的方法来可靠地击穿陶瓷金卤灯。即在金卤灯启动时，将升压电路输出电压维持在较高的电平处，而在金卤灯正常工作时，将升压电路输出电压维持在较低的电平处。 In various embodiments of the present invention, a ceramic metal halide lamp ballast level control method and system is provided for reliably penetrating a ceramic metal halide lamp by varying the output voltage level of the boost circuit. That is, when the metal halide lamp is started, the output voltage of the boosting circuit is maintained at a high level, and when the metal halide lamp is in normal operation, the output voltage of the boosting circuit is maintained at a low level.
虽然本发明是通过具体实施例进行说明的，本领域技术操纵员员应当明白，在不脱离本发明范围的情况下，还可以对本发明进行各种变换及等同替代。另外，针对特定情形或材料，可以对本发明做各种修改，而不脱离本发明的范围。因此，本发明不局限于所公开的具体实施例，而应当包括落入本发明权利要求范围内的全部实施方式。 While the invention has been described in terms of specific embodiments, it will be understood that In addition, various modifications may be made to the invention without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments disclosed, but all the embodiments falling within the scope of the appended claims.

Claims (10)

  1. 一种陶瓷金卤灯镇流器电平控制方法，其特征在于，包括：A method for controlling a level of a ceramic metal halide lamp ballast, comprising:
    S1 、可编程器件根据陶瓷金卤灯的工作状态向开关电路发送连通信号或断开信号，控制与开关电路相连的分压采样电路的分压状态，所述开关电路在连通时具有预设阻值，所述分压采样电路包括依次串联入升压电路的正、负输出端之间的第一电阻和第二电阻，所述分压状态为第二电阻的分压；S1 The programmable device sends a connection signal or a disconnection signal to the switch circuit according to the working state of the ceramic metal halide lamp, and controls a voltage division state of the voltage division sampling circuit connected to the switch circuit, and the switch circuit has a preset resistance value when connected The voltage dividing sampling circuit includes a first resistor and a second resistor sequentially connected in series between the positive and negative output terminals of the boosting circuit, and the divided voltage state is a partial pressure of the second resistor;
    S2 、控制芯片检测所述第二电阻的分压，并根据所述分压改变所述升压电路的输出电压。S2. The control chip detects a partial pressure of the second resistor, and changes an output voltage of the booster circuit according to the divided voltage.
  2. 根据权利要求 1 所述的陶瓷金卤灯镇流器电平控制方法，其特征在于，所述开关电路与所述第二电阻并联，在陶瓷金卤灯的启动阶段，所述可编程器件输出连通信号使所述开关电路连通，所述控制芯片根据检测到的较低分压控制所述升压电路的输出电压至第一电平处，在陶瓷金卤灯的正常工作阶段，所述可编程器件输出断开信号使所述开关电路断开，所述控制芯片根据检测到的较高分压控制所述升压电路的输出电压至第二电平处，其中所述第一电平高于所述第二电平。According to claim 1 The ceramic metal halide lamp ballast level control method is characterized in that the switch circuit is connected in parallel with the second resistor, and in the startup phase of the ceramic metal halide lamp, the programmable device outputs a connection signal to the device The switching circuit is connected, the control chip controls the output voltage of the boosting circuit to a first level according to the detected lower partial voltage, and the programmable device outputs the output during a normal working phase of the ceramic metal halide lamp. An open signal causes the switch circuit to be turned off, and the control chip controls an output voltage of the boost circuit to a second level according to the detected higher partial voltage, wherein the first level is higher than the first Two levels.
  3. 根据权利要求 2 所述的陶瓷金卤灯镇流器电平控制方法，其特征在于，所述开关电路包括依次串联的第三电阻和开关管，所述可编程器件与所述开关管的控制电极连接。According to claim 2 The method for controlling a level of a ceramic metal halide lamp ballast is characterized in that the switch circuit comprises a third resistor and a switch tube connected in series, and the programmable device is connected to a control electrode of the switch tube.
  4. 根据权利要求 3 所述的陶瓷金卤灯镇流器电平控制方法，其特征在于，所述开关管是三极管，所述可编程器件与所述三极管的基极相连，所述开关电路还包括连接在所述三极管的基极与所述升压电路负输出端之间的第一电容。According to claim 3 The ceramic metal halide lamp ballast level control method is characterized in that the switch tube is a triode, the programmable device is connected to a base of the triode, and the switch circuit further comprises a connection A first capacitance between a base of the transistor and a negative output of the boost circuit.
  5. 根据权利要求 2-4 中任一项所述的陶瓷金卤灯镇流器电平控制方法，其特征在于，在陶瓷金卤灯的启动阶段，所述可编程器件在预设时间段内输出连通信号。According to claims 2-4 The method for controlling a level of a ceramic metal halide lamp ballast according to any one of the preceding claims, wherein, in a startup phase of the ceramic metal halide lamp, the programmable device outputs a connected signal for a preset period of time.
  6. 一种陶瓷金卤灯镇流器电平控制系统，包括依次连接的用于控制升压状态的控制芯片（ 500 ）、用于升压变频整流的升压电路（ 100 ）、用于保持恒定功率的半桥控制电路（ 300 ）、用于提供驱动信号的驱动电路（ 400 ）以及用于提供控制信号的可编程器件（ 600 ），其特征在于，还包括分别与所述控制芯片（ 500 ）和所述可编程器件（ 600 ）相连的电平切换电路（ 200 ），所述电平切换电路（ 200 ）包括相连的分压采样电路（ 210 ）和用于改变所述分压采样电路（ 210 ）的分压状态的开关电路（ 220 ），所述分压采样电路（ 210 ）包括依次串联入所述升压电路（ 100 ）的正、负输出端之间的第一电阻（ R1 ）和第二电阻（ R2 ），所述开关电路（ 220 ）在连通时具有预设阻值，所述可编程器件（ 600 ）向所述开关电路（ 220 ）输出连通信号或断开信号改变所述第二电阻（ R2 ）的分压，所述控制芯片（ 500 ）检测所述第二电阻（ R2 ）的分压并根据所述分压改变所述升压电路（ 100 ）的输出电压。A ceramic metal halide lamp ballast level control system includes a control chip (500) for controlling a boost state and a boost circuit for boosting frequency conversion rectification ( 100), a half bridge control circuit (300) for maintaining constant power, a drive circuit (400) for providing a drive signal, and a programmable device for providing a control signal (600) And characterized in that it further comprises a level switching circuit (200) connected to the control chip (500) and the programmable device (600), respectively, the level switching circuit (200) a separate voltage sampling circuit (210) and a switching circuit (220) for changing a voltage dividing state of the voltage dividing sampling circuit (210), the voltage dividing sampling circuit (210) a first resistor (R1) and a second resistor (R2) connected in series between the positive and negative outputs of the booster circuit (100), the switching circuit (220) Having a predetermined resistance value when connected, the programmable device (600) outputs a communication signal or a disconnection signal to the switching circuit (220) to change a voltage division of the second resistor (R2), the control chip ( 500) detecting a partial pressure of the second resistor (R2) and changing an output voltage of the booster circuit (100) according to the divided voltage.
  7. 根据权利要求 6 所述的陶瓷金卤灯镇流器电平控制系统，其特征在于，所述开关电路（ 220 ）与所述第二电阻（ R2 ）并联，在陶瓷金卤灯的启动阶段，所述可编程器件（ 600 ）输出连通信号使所述开关电路（ 220 ）连通，所述控制芯片（ 500 ）根据检测到的较低分压控制所述升压电路（ 100 ）输出较高的输出电压，在陶瓷金卤灯的正常工作阶段，所述可编程器件（ 600 ）输出断开信号使所述开关电路（ 220 ）断开，所述控制芯片（ 500 ）根据检测到的较高分压控制所述升压电路（ 100 ）输出较低的输出电压。A ceramic metal halide lamp ballast level control system according to claim 6, wherein said switching circuit (220) and said second resistor (R2) Parallel, in the startup phase of the ceramic metal halide lamp, the programmable device (600) outputs a communication signal to connect the switching circuit (220), the control chip (500) Controlling the boost circuit (100) to output a higher output voltage based on the detected lower partial voltage, the programmable device (600) outputting an off signal during the normal operation phase of the ceramic metal halide lamp Switch circuit 220) disconnected, the control chip (500) controls the booster circuit (100) to output a lower output voltage according to the detected higher partial voltage.
  8. 根据权利要求 7 所述的陶瓷金卤灯镇流器电平控制系统，其特征在于，所述开关电路（ 220 ）包括依次串联的第三电阻（ R3 ）和开关管，所述可编程器件（ 600 ）与所述开关管的控制电极连接。A ceramic metal halide lamp ballast level control system according to claim 7, wherein said switching circuit (220) comprises a third resistor (R3) connected in series in series. And a switch tube, the programmable device (600) being connected to the control electrode of the switch tube.
  9. 根据权利要求 8 所述的陶瓷金卤灯镇流器电平控制系统，其特征在于，所述开关管是三极管（ Q1 ），所述可编程器件（ 600 ）与所述三极管（ Q1 ）的基极相连，所述开关电路（ 220 ）还包括连接在所述三极管（ Q1 ）的基极与所述升压电路（ 100 ）负输出端之间的第一电容（ C1 ）。A ceramic metal halide lamp ballast level control system according to claim 8, wherein said switching transistor is a triode (Q1), said programmable device (600 Connected to the base of the transistor (Q1), the switching circuit (220) further comprising a first connection between a base of the transistor (Q1) and a negative output of the booster circuit (100) capacitance( C1).
  10. 根据权利要求 7-9 中任一项所述的陶瓷金卤灯镇流器电平控制系统，其特征在于，所述可编程器件（A ceramic metal halide lamp ballast level control system according to any one of claims 7 to 9, wherein said programmable device (
    600 ）中包括延时电路或定时器，所述可编程器件（ 600 ）在预设时间段内输出连通信号。600) includes a delay circuit or a timer, and the programmable device (600) outputs a connected signal for a preset period of time.
PCT/CN2011/073377 2011-04-27 2011-04-27 Ballast level control method and system for ceramic metal halide lamp WO2012145900A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2572713Y (en) * 2002-09-11 2003-09-10 舒国馥 Electronic ballast for high-pressure sodium lamp
CN1572126A (en) * 2001-10-18 2005-01-26 皇家飞利浦电子股份有限公司 Short circuit ballast protection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1572126A (en) * 2001-10-18 2005-01-26 皇家飞利浦电子股份有限公司 Short circuit ballast protection
CN2572713Y (en) * 2002-09-11 2003-09-10 舒国馥 Electronic ballast for high-pressure sodium lamp

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