CN106304583B - Measurement regulation and control device of high-pressure sodium white lamp - Google Patents

Measurement regulation and control device of high-pressure sodium white lamp Download PDF

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Publication number
CN106304583B
CN106304583B CN201610815674.6A CN201610815674A CN106304583B CN 106304583 B CN106304583 B CN 106304583B CN 201610815674 A CN201610815674 A CN 201610815674A CN 106304583 B CN106304583 B CN 106304583B
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voltage
circuit
current
white lamp
electronic ballast
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CN106304583A (en
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余捻宏
贺小勇
王海林
杨凯
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Everbright energy saving lighting (Shenzhen) Co., Ltd
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Hunan Xianglang Photoelectric Technology Co Ltd
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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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

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Abstract

The invention relates to the field of electric energy measurement, in particular to a measurement regulation and control device of a high-voltage sodium white lamp, which comprises an electronic ballast, a measurement unit, a control unit and a data transmission unit, wherein the electronic ballast is connected with the measurement unit; the electronic ballast is used for driving the high-voltage sodium white lamp to work; the measuring unit is used for measuring the electrical parameter information input into the electronic ballast or the high-voltage sodium white lamp; the control unit is used for measuring the voltage information and the current information of the high-voltage sodium white lamp; the data transmission unit is used for transmitting the electrical parameter information to an external concentrator. The invention designs a measuring and regulating device of a high-pressure sodium white lamp, which is added on the basis of optimizing an electronic ballast of the high-pressure sodium white lamp to measure the real-time electric energy parameters of the high-pressure sodium white lamp and transmit the parameters to an external server to realize real-time monitoring; the control unit detects and controls the current and voltage of the high-voltage sodium white lamp, so that the reliability and the safety of the high-voltage sodium white lamp are improved.

Description

Measurement regulation and control device of high-pressure sodium white lamp
Technical Field
The invention relates to the field of electric energy measurement, in particular to a measurement regulation and control device of a high-voltage sodium white lamp.
Background
The high-pressure white sodium lamp is a substitute product of the high-pressure sodium lamp, is a fourth generation illumination light source which integrates the high luminous efficiency of the high-pressure sodium lamp and the high color rendering of a ceramic metal halide lamp, has extremely high luminous efficiency and compact appearance, adopts sodium halide to replace sodium amalgam in the high-pressure sodium lamp, thereby improving the color rendering, and has the performance characteristics that: the color rendering property is good (the color rendering index is more than 80, the high-pressure sodium lamp is about 25), the lighting effect is high (130Lm/W, the high-pressure sodium lamp-120 and the LED-75), comfortable and dynamic warm white light is emitted, the color temperature is close to 2860K, the fog penetration property is better than that of pure white light with relatively cold LEDs, the irradiation area is large and uniform, the LED lamp is more suitable for road illumination, the service life is as long as 3 ten thousand hours, the lamp is two times longer than that of a high-pressure sodium lamp and a metal halogen lamp, the product is environment-friendly and energy-saving (the product does not contain pollution elements such as lead, mercury and the like, and the high-pressure sodium lamp is replaced by a 40W sodium white lamp), the electricity is saved by more than 45%, meanwhile, the.
As shown in fig. 1, fig. 1 shows the starting characteristics of the high-pressure sodium white lamp, including the driving conditions required for the middle conduction stage, the ignition stage, the arc stabilization stage, the energization stage, the power variation stage, and the steady state stage, and the corresponding equivalent electrical parameters, duration, and the like.
From the aspect of performance of a lighting system, the most important index for evaluating the quality of an electronic ballast is the performance of a lamp-ballast interface, however, in the prior art, a high-voltage sodium white lamp has no matched ballast, and can only be matched with the existing high-voltage sodium lamp ballast for use, and as a driving power supply, the performance of the high-voltage sodium white lamp cannot be well exerted, and meanwhile, a means for monitoring the high-voltage sodium white lamp is also lacked, so that the method is not suitable for the environment of the existing intelligent city.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a measurement and control device for a high-pressure sodium white lamp, which solves the problems that the high-pressure sodium white lamp has no matched ballast and lacks a means for monitoring the high-pressure sodium white lamp.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a measure regulation and control device of high-pressure sodium white lamp for measure and regulate and control the operating condition of high-pressure sodium white lamp, should measure the regulation and control device and include:
one end of the electronic ballast is connected with the power supply, the other end of the electronic ballast is connected with the high-voltage sodium white lamp, and the electronic ballast drives the high-voltage sodium white lamp to work;
the measuring unit measures the electrical parameter information input to the electronic ballast or the high-voltage sodium white lamp;
the control unit is respectively connected with the electronic ballast and the high-voltage sodium white lamp, measures the voltage information and the current information of the high-voltage sodium white lamp, and regulates and controls the voltage and the current input to the high-voltage sodium white lamp through the electronic ballast according to the voltage information and the current information; or the control unit regulates and controls the voltage and the current input to the high-voltage sodium white lamp through the electronic ballast according to an external control signal;
and the data transmission unit is respectively connected with the measuring unit and the control unit, transmits the electrical parameter information to an external concentrator, and transmits related control signals to the control unit through the data transmission unit by the external concentrator.
Wherein, the preferred scheme is: the measuring unit includes a current transformer disposed between the power supply and the electronic ballast, and measures a current input to the electronic ballast through the current transformer.
Wherein, the preferred scheme is: the measuring unit comprises a voltage transformer arranged between the power supply and the electronic ballast, and measures the voltage input to the electronic ballast through the voltage transformer.
Wherein, the preferred scheme is: the electrical parameter information includes voltage, current, power, electrical energy, power factor, harmonics.
Wherein, the preferred scheme is: the data transmission unit is a wireless communication module or a PLC communication module.
Wherein, the preferred scheme is: the wireless communication modules of the similar high-pressure sodium white lamps are in communication connection with each other, and the wireless communication modules indirectly transmit the electrical parameter information to an external concentrator in a mutual transmission mode; or the external control signal is indirectly transmitted from the concentrator to the corresponding wireless communication module.
Wherein, the preferred scheme is: the electronic ballast at least comprises a rectifying circuit, a PFC circuit, a low-frequency reversing module and a starting circuit which are connected in sequence, wherein the rectifying circuit is connected with a power supply, and the starting circuit is connected with a high-voltage sodium white lamp; wherein the content of the first and second substances,
the rectifying circuit converts alternating current of a power supply into direct current and outputs the direct current;
the PFC circuit corrects a power factor;
the low-frequency reversing module reverses at low frequency;
the starting circuit provides spike pulse electricity when the high-voltage sodium white lamp is started and stops working after the starting is finished.
Wherein, the preferred scheme is: the low-frequency reversing module comprises a BULK circuit and a full-bridge inverter circuit, the BULK circuit is respectively connected with the PFC circuit and the full-bridge inverter circuit, and the full-bridge inverter circuit is connected with the starting circuit; wherein the content of the first and second substances,
the BULK circuit converts high-voltage direct current output by the PFC circuit into low-voltage direct current and realizes current limiting;
the full bridge inverter circuit generates a high frequency square wave drive voltage that drives current through the at least one gas discharge lamp and effects low frequency commutation.
Wherein, the preferred scheme is: the low-frequency reversing module is a full-bridge two-pole circuit, and the full-bridge two-pole circuit comprises four MOS (metal oxide semiconductor) tubes in bridge design and a voltage-stabilizing current-limiting circuit which is respectively connected with the four MOS tubes in parallel; the full-bridge two-pole circuit commutates at a low frequency, outputs stable voltage when the high-voltage sodium-white lamp is started, and realizes current limiting after the starting is finished.
Wherein, the preferred scheme is: the low-frequency reversing module is a half-bridge two-pole circuit which comprises two diodes and two MOS (metal oxide semiconductor) tubes in bridge design, and a voltage-stabilizing current-limiting circuit which is respectively connected with the two diodes and the two MOS tubes in parallel; the half-bridge two-pole circuit commutates at low frequency and realizes current limiting after the high-voltage sodium white lamp is started.
Compared with the prior art, the high-voltage sodium white lamp measurement and control device has the advantages that the measurement and control device is additionally arranged on the basis of optimizing the electronic ballast of the high-voltage sodium white lamp, real-time electric energy parameters of the high-voltage sodium white lamp are measured, and the parameters are transmitted to an external server, so that real-time monitoring is realized; the control unit detects and controls the current and voltage of the high-voltage sodium white lamp, so that the reliability and the safety of the high-voltage sodium white lamp are improved; the intelligent lighting system also has the functions of data acquisition and electric energy metering, lamp dimming and control, state monitoring, data transmission, parameter setting and the like, and conforms to the development trend of intelligent lighting.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the start-up characteristics of a prior art high pressure sodium white lamp;
FIG. 2 is a block diagram of a measurement control apparatus according to the present invention;
FIG. 3 is a block diagram of the current and voltage transformers of the present invention;
FIG. 4 is a block diagram of the measurement and control device based on BULK circuit and full bridge inverter circuit according to the present invention;
fig. 5 is an equivalent circuit diagram of the electronic ballast of fig. 4;
FIG. 6 is a block diagram of a measurement and control device based on a full-bridge two-pole circuit;
fig. 7 is an equivalent circuit diagram of the electronic ballast of fig. 6;
FIG. 8 is a block diagram of a measurement and control device based on a half-bridge two-pole circuit;
fig. 9 is an equivalent circuit diagram of the electronic ballast of fig. 8;
FIG. 10 is a schematic circuit diagram of a measurement control chip according to the present invention;
fig. 11 is a control flow chart of the control unit of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 2 and 3, the present invention provides a preferred embodiment of a measurement and control device for a high-pressure sodium white light lamp.
A measurement and control device for a high-voltage sodium white lamp 30 comprises the high-voltage sodium white lamp 30, an electronic ballast 20, a power supply 10, a measurement unit 41, a control unit 42, a data transmission unit 50 and a concentrator 60, wherein the electronic ballast 20 is respectively connected with the power supply 10 and the high-voltage sodium white lamp 30, the data transmission unit 50 is respectively connected with the measurement unit 41 and the control unit 42, the data transmission unit 50 is respectively connected with the control unit 42 and the measurement unit 41, and the data transmission unit 50 is connected with the concentrator 60.
The specific description is as follows:
in the electronic ballast 20, one end of the electronic ballast 20 is connected to the power supply 10, and the other end thereof is connected to the high-pressure sodium white lamp 30, and the electronic ballast 20 is configured to drive the high-pressure sodium white lamp 30 to operate.
Wherein, the power supply 10 is an alternating current power supply 10 of 220V.
In the measuring unit 41, the measuring unit 41 is used for measuring the electrical parameter information input to the electronic ballast 20 or the high-pressure sodium white lamp 30. Specifically, the measurement unit 41 measures the voltage, current, phase, PF value, and harmonic of the input ac power accurately through the programmable measurement control chip.
Further, and referring to fig. 3, the measuring unit 41 includes a current transformer 411 disposed between the power supply 10 and the electronic ballast 20, and the measuring unit 41 measures the current input to the electronic ballast 20 through the current transformer 411. Specifically, the current transformer 411 principle is made according to the transformer principle; the current transformer 411 is composed of a closed iron core and a winding; the primary side winding of the current transformer 411 has few turns and is connected in series in a circuit of current to be measured, so that all current of the circuit always flows through the current transformer, the secondary side winding has more turns and is connected in series in a measuring instrument and a protection circuit, and the secondary side circuit of the current transformer is always closed when the current transformer is in work, so that the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer 411 is close to short circuit; the current transformer 411 converts a large current on the primary side into a small current on the secondary side for measurement, and the secondary side cannot be opened.
Further, and referring to fig. 3, the measuring unit 41 includes a voltage transformer 412 disposed between the power supply 10 and the electronic ballast 20, and the measuring unit 41 measures the voltage input to the electronic ballast 20 through the voltage transformer 412. Specifically, the voltage transformer 412 is a cored transformer; it mainly comprises a primary coil, a secondary coil, an iron core and an insulator; when a voltage U1 is applied to the primary winding, a magnetic flux phi is generated in the iron core, a secondary voltage U2 is generated in the secondary winding according to the law of electromagnetic induction, the number of turns of the primary winding or the secondary winding is changed, different ratios of the primary voltage to the secondary voltage can be generated, and the voltage transformer 412 with different ratios can be formed; the voltage transformer 412 converts the high voltage into a low voltage in proportion, namely 100V, the primary side of the voltage transformer 412 is connected with a primary system, and the secondary side of the voltage transformer is connected with a measuring instrument, relay protection and the like; mainly electromagnetic (the capacitor type voltage transformer 412 is widely used), and some other types are non-electromagnetic, such as electronic type and photoelectric type.
In the control unit 42, the control unit 42 is respectively connected with the electronic ballast 20 and the high-pressure sodium white lamp 30, and the control unit 42 is configured to measure the voltage information and the current information of the high-pressure sodium white lamp 30, and regulate and control the voltage and the current input to the high-pressure sodium white lamp 30 through the electronic ballast 20 according to the voltage information and the current information; or the control unit 42 regulates the voltage and current input to the high-pressure sodium white lamp 30 according to an external control signal and through the electronic ballast 20.
Further, the concentrator 60 aggregates a number of input lines and a number of output lines, or provides a central communication link for a number of devices, the concentrator 60 being of many types. In a mainframe computer environment, the concentrator 60 can consolidate lines from many terminals and provide a connection to another concentrator 60 in a hierarchical scheme, or directly to a host's front-end processor; data from a plurality of slow terminal lines can be transmitted on one high-speed line using a multiplexing method or a contention method; in the multiplexing method, a terminal gets a fixed time slot in a multiplexed stream; in the contention method, each low speed line can obtain all entries of the high speed line in a short period of time.
In the data transmission unit 50, the data transmission unit 50 is respectively connected with the measuring unit 41 and the control unit 42, the data transmission unit 50 is used for transmitting the electrical parameter information to the external concentrator 60, and the external concentrator 60 transmits the relevant control signal to the control unit 42 through the data transmission unit 50.
Further, the data transmission unit 50 is a wireless communication module or a PLC communication module.
Wherein, the wireless communication modules of the adjacent high-pressure sodium white lamps 30 are connected with each other in a communication way, and the wireless communication modules indirectly transmit the electrical parameter information to the external concentrator 60 in a mutual transmission way; or indirectly transmit an external control signal from the concentrator 60 to the corresponding wireless communication module.
That is, the wireless communication module may be used as a wireless transmission module corresponding to the high-pressure sodium white lamp 30 to transmit data, or may be used as a transmission bridge of the wireless communication modules of other high-pressure sodium white lamps 30 to indirectly transmit data to the concentrator 60.
In which the PLC communication module is directly connected to a power line, and transmits a data signal to an external concentrator 60 through the power line.
Referring to fig. 4, 5, 6, 7, 8 and 9, the present invention provides a preferred embodiment of a measurement and control device for a high pressure sodium white lamp.
The electronic ballast 20 at least comprises a rectifying circuit 21, a PFC circuit 22, a low-frequency reversing module and a starting circuit 23 which are connected in sequence, wherein the rectifying circuit 21 is connected with the power supply 10, and the starting circuit 23 is connected with the high-voltage sodium white lamp 30.
The rectifier circuit 21 is configured to convert an alternating current of the power supply 10 into a direct current and output the direct current, and specifically, the rectifier circuit 21 includes an alternating current input terminal and a direct current output terminal, the alternating current input terminal is connected to the power supply 10, and when the power supply 10 is energized with the alternating current input terminal, the rectifier circuit 21 generates a rectified output voltage at the direct current output terminal thereof.
The PFC circuit 22 is used to correct the power factor; specifically, the english language of the PFC is called "Power factor correction" in all, meaning "Power factor correction", and the Power factor refers to the relationship between the effective Power and the total Power consumption (apparent Power), that is, the ratio of the effective Power divided by the total Power consumption (apparent Power); basically, the power factor can measure the effective utilization degree of the power, and when the power factor value is larger, the power utilization rate is higher.
The low-frequency reversing module is used for low-frequency reversing.
The starting circuit 23 is used for providing spike pulse power when the high-pressure sodium white lamp 30 is started and stopping working after the starting is finished; specifically, the voltage of the high-voltage white sodium lamp reaches 3.3kV during starting, and after the starting is finished, the high-voltage white sodium lamp enters an arc stabilizing stage, the lamp voltage is reduced, and the starting circuit 23 does not work.
Further, an auxiliary power supply 27 is included to convert the high voltage power to low voltage power available to the corresponding functional module.
In the present embodiment, in order to drive the high-pressure sodium white lamp 30, the basic external characteristics that the electronic ballast 20 must have are: A. during the ignition phase of the lamp, providing a constant OCV voltage (voltage breakdown of the discharge tube and ballast open circuit voltage) and an ignition spike voltage of a suitable height and sufficient width, the ignition timing and ignition hold time being controllable; B. in the Runup stage of the lamp (Runup process of the high-pressure white sodium lamp 30 is the process of gasifying amalgam and halogen salt in a discharge tube and gradually increasing voltage and lamp power at two ends of an electrode), constant Runup current is provided; C. providing constant output power or constant light color control during the normal working stage of the lamp; D. in the EOL (end of life) operating phase of the lamp, the EOL status can be identified and appropriate protective action taken. In brief, in different operation stages of the high-voltage sodium white lamp 30, the electronic ballast 20 has external characteristics of constant voltage, constant current and constant power, and in order to make the ballast have these output characteristics and comply with the basic trend of power electronic product development (high energy efficiency, high power density and miniaturization), the internal circuit of the ballast must adopt a proper topology and control logic.
The main circuit topology of the electronic ballast 20 of the present invention is divided into a three-stage topology and a two-stage topology, and the two-stage topology is divided into a full-bridge two-pole (FBCF) topology and a half-bridge two-pole (HBCF) topology. In electronic ballast 20, the operation of the ignition spike voltage generation circuit should be controlled by a timer for safety reasons, and the height and width of the ignition spike can be adjusted to appropriate values by adjusting the turn ratio of the step-up transformer in series with the lamp and adjusting the capacitance of the ignition capacitor in parallel with the transformer winding. When the lamp is lit, the operation of the spike voltage generation circuit is suspended; after a certain time has elapsed, the operation of the spike voltage generation circuit is stopped if the lamp still cannot be lit. In order to reduce the risk of EOL of the high pressure sodium white lamp 30, the ignition action should be intermittent.
The specific description is as follows.
First, and referring to fig. 4 and 5, the low frequency commutation module includes a BULK circuit 241 and a full bridge inverter circuit 242, the BULK circuit 241 is connected to the PFC circuit 22 and the full bridge inverter circuit 242, respectively, and the full bridge inverter circuit 242 is connected to the start circuit 23.
The BULK circuit 241 is configured to convert the high-voltage dc output by the PFC circuit 22 into a low-voltage dc, and implement current limiting; specifically, the control process of converting high-voltage direct current to low-voltage direct current of the PFC circuit 22 is realized through an inductor, a control MOS transistor, a freewheeling diode, and a PWM controller.
The full-bridge inverter circuit 242 is configured to generate a high-frequency square-wave driving voltage for driving current flowing through the at least one gas discharge lamp, and to perform low-frequency commutation.
The ballast of the three-stage structure is most friendly and it is relatively simple to implement the constant voltage, constant current and constant power (constant light color) required for the lamp using the ballast of the three-stage structure in terms of the difficulty of implementing the control method, in which the control of the buck circuit 241 is the core. In the three-stage circuit, the rectifying circuit 21 and the PFC circuit 22 realize two functions of power factor correction and constant direct-current voltage output, the BULK circuit 241 realizes two functions of voltage stabilization (ignition stage) and current limitation (Runup stage and normal operation stage), and the full-bridge inverter circuit 242 realizes a function of low-frequency commutation. First, the magnitude of the output voltage of the BULK circuit 241 is controlled during the ignition phase of the lamp, so that a constant OCV voltage can be supplied to the lamp. During the Runup phase of the lamp, the magnitude of the peak value of the inductor current of the BULK circuit 241 operating in the critical mode is controlled, so that a constant Runup current can be supplied to the lamp. In the normal working stage of the lamp, the average value of the input current of the BULK circuit 241 is controlled according to the change of the lamp voltage, so that the constant power control or the constant light color control can be realized. In the EOL stage of the lamp, the EOL state of the lamp is identified and EOL protection is implemented by monitoring the variation range of the output voltage of the BULK circuit 241.
In a second scheme and with reference to fig. 6 and 7, the low-frequency commutation module is a full-bridge bipolar circuit 25, and the full-bridge bipolar circuit 25 includes four MOS transistors in a bridge design, and a voltage-stabilizing current-limiting circuit connected in parallel with the four MOS transistors respectively; the full-bridge two-pole circuit 25 is used for low-frequency commutation, outputs stable voltage when the high-voltage sodium-white lamp 30 is started, and realizes current limiting after the starting is finished.
In the two-stage FBCF line, in addition to the function of low-frequency commutation, functions such as stable OCV voltage (ignition phase) and current limitation (Runup phase and normal operation phase) are also output. The direct-current input voltage of the FBCF is always stabilized at 400V, and the OCV voltage at two ends of the lamp electrode can be adjusted to a set value by adjusting the duty ratio of a high-frequency bridge arm switch in the ignition stage of the lamp; in the Runup stage and the normal operation stage, the inductor L2 operates in the critical current mode, and by adjusting the Ton (on-state time in each switching period) of the high-frequency bridge arm switch, the peak value of the inductor current L2 can be controlled, and further the magnitude of the lamp current can be controlled.
In a third embodiment and with reference to fig. 8 and 9, the low-frequency commutation module is a half-bridge bipolar circuit 26, and the half-bridge bipolar circuit 26 includes two diodes and two MOS transistors in a bridge design, and a voltage-stabilizing current-limiting circuit connected in parallel with the two diodes and the two MOS transistors respectively; the half-bridge two-pole circuit 26 is used for low-frequency commutation and realizes current limiting after the high-voltage sodium white lamp 30 is started.
In the two-stage HBCF line, in addition to the function of low-frequency commutation, a current limiting (Runup phase and normal operation phase) function is also implemented. In the Runup stage and the normal operation stage, the inductor L2 operates in the critical current mode, and the peak value of the inductor current of L2 can be controlled by adjusting the Ton (on-state time) of the high-frequency bridge arm switch, and further the magnitude of the lamp current can be controlled.
As shown in FIG. 10, the present invention provides a preferred embodiment of a metrology control chip.
The measurement unit 41 and the control unit 42 share one chip, i.e. the measurement control chip 4.
The current channel is connected with PIN7 and PIN8 of the measurement control chip 4 through the current transformer 411 for current measurement, the voltage channel is connected with PIN4 and PIN3 of the measurement control chip 4 through the voltage transformer 412 for voltage measurement, and phase, PF value and harmonic analysis are realized through an algorithm inside the measurement control chip 4.
The additional ADC of the measurement control chip 4 is used for monitoring the state of the white sodium lamp, and the monitoring mainly comprises the voltage and current parameters of the high-voltage white sodium lamp. Inputting the voltage of the high-voltage white sodium lamp into an ADC PIN2 PIN of a control circuit to measure the working voltage of the high-voltage white sodium lamp; and the current on the sampling resistor of the switching tube of the conversion circuit is connected to an ADC PIN5 PIN of the control circuit to measure the working current of the high-voltage white sodium lamp, so that the detection of the high-voltage white sodium lamp current is realized, namely the parameters of the voltage and the current input to the starting circuit 23 are detected. When the phenomenon that the high-voltage sodium lamp is abnormal or the current is in an overvoltage and overcurrent phenomenon is found, the conversion circuit can be controlled through a PIN of a control circuit PIN58, and the voltage and current states of the high-voltage sodium lamp are regulated and output to restore to normal, such as a BULK circuit 241, a half-bridge bipolar circuit 26 and a full-bridge bipolar circuit 25. Meanwhile, the control circuit can also realize remote control through a PIN58 PIN, namely, the control circuit receives data of the external concentrator 60 through broadband carrier waves or wireless, so that the switching and brightness adjustment functions of the high-voltage white sodium lamp are realized.
As shown in FIG. 11, the present invention provides a preferred embodiment of the control flow of the control unit.
The control unit 42 is preferably a measurement control chip 4; wherein, the ballast ignition control logic is as follows: and if the ignition time is 12s and 12s is not lightened, the output is closed for three minutes, the ignition is carried out for 12s again after three minutes, if the ignition is still not lightened, the output is continuously closed for three minutes, the cycle is carried out for 6 times, if the ignition is still not successfully lightened for 6 times, the output is closed, the ignition is not carried out, and the power-on reset is needed again.
Meanwhile, the number of times of ignition needs to be increased so as to improve the success rate of lighting, reduce the high-voltage pulse time, reduce the damage to the output device and the lamp, and reduce the loss of the lighting device.
The measurement control chip 4 is connected to the voltage-dividing output node of the BULK circuit 241, the half-bridge bipolar circuit 26 or the full-bridge bipolar circuit 25, and detects the voltage of the tube (i.e. the PIN of ADC PIN2 of the measurement control chip 4).
The control flow is as follows:
A. the measurement control chip 4 is powered on, the counter is reset, and the time delay of 1S is waited;
B. outputting high-voltage pulse and adding one to a counter;
C. detecting whether the pipe pressure is lower than a threshold value, if not, entering D, and if so, entering E;
D. if 0.6S is reached, if the output is closed and F is entered, if the output is not closed, B is returned;
E. judging whether the time is 6S, if so, detecting whether the pipe pressure is lower than the threshold value again, if not, closing the output and entering F, and otherwise, repeating E again;
F. judging whether the time of 6S elapses, if so, judging whether the count value of the counter is less than four, and if not, entering G, and if so, returning B;
G. judging whether the count value is greater than twenty-three, if not, entering H, otherwise, closing the output, and ending;
H. outputting high-voltage pulse and adding one to a counter;
I. reducing the pipe pressure, detecting whether the time is 6S, if so, detecting whether the pipe pressure is lower than a threshold value, and if so, closing the output; if the tube pressure is not reduced, detecting whether 0.6S is reached, if so, closing the output (if not, returning to G);
J. and judging whether the time is 1min or not, and if so, returning to G.
The control unit 42 realizes the output constant voltage and constant current control of the electronic ballast 20; meanwhile, the instruction of the concentrator 60 is converted to the illumination of the high-pressure white sodium lamp 30 through a broadband carrier or a wireless module, so that the stepless dimming of the high-pressure white sodium lamp 30 can be realized according to different instructions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, but rather as embodying the invention in a wide variety of equivalent variations and modifications within the scope of the appended claims.

Claims (8)

1. A measuring and regulating device of a high-pressure sodium white lamp is used for measuring and regulating the working state of the high-pressure sodium white lamp, and is characterized by comprising:
one end of the electronic ballast is connected with the power supply, the other end of the electronic ballast is connected with the high-voltage sodium white lamp, and the electronic ballast drives the high-voltage sodium white lamp to work; the electronic ballast at least comprises a rectifying circuit, a PFC circuit, a low-frequency reversing module and a starting circuit which are connected in sequence, wherein the rectifying circuit is connected with a power supply, and the starting circuit is connected with a high-voltage sodium white lamp; the rectifying circuit converts alternating current of a power supply into direct current and outputs the direct current; the PFC circuit corrects a power factor; the low-frequency reversing module reverses at low frequency; the starting circuit provides spike pulse electricity when the high-voltage sodium white lamp is started and stops working after the starting is finished;
the low-frequency reversing module comprises a BULK circuit and a full-bridge inverter circuit, the BULK circuit is respectively connected with the PFC circuit and the full-bridge inverter circuit, and the full-bridge inverter circuit is connected with the starting circuit; the BULK circuit converts high-voltage direct current output by the PFC circuit into low-voltage direct current and realizes current limiting; the full-bridge inverter circuit generates a high-frequency square wave driving voltage for driving current to flow through the high-voltage sodium-white lamp and realizes low-frequency commutation;
the measuring unit measures the electrical parameter information input to the electronic ballast or the high-voltage sodium white lamp;
the control unit is respectively connected with the electronic ballast and the high-voltage sodium white lamp, measures the voltage information and the current information of the high-voltage sodium white lamp, and regulates and controls the voltage and the current input to the high-voltage sodium white lamp through the electronic ballast according to the voltage information and the current information; or the control unit regulates and controls the voltage and the current input to the high-voltage sodium white lamp through the electronic ballast according to an external control signal;
and the data transmission unit is respectively connected with the measuring unit and the control unit, transmits the electrical parameter information to an external concentrator, and transmits related control signals to the control unit through the data transmission unit by the external concentrator.
2. A metrology conditioning device as claimed in claim 1, wherein: the measuring unit includes a current transformer disposed between the power supply and the electronic ballast, and measures a current input to the electronic ballast through the current transformer.
3. A metrology conditioning device as claimed in claim 1, wherein: the measuring unit comprises a voltage transformer arranged between the power supply and the electronic ballast, and measures the voltage input to the electronic ballast through the voltage transformer.
4. A metrology conditioning device as claimed in claim 1, wherein: the electrical parameter information includes voltage, current, power, electrical energy, power factor, harmonics.
5. A metrology conditioning device as claimed in claim 1, wherein: the data transmission unit is a wireless communication module or a PLC communication module.
6. A metrology conditioning device as claimed in claim 5, wherein: the wireless communication modules of the high-pressure sodium white lamps close to each other are in communication connection with each other, and the wireless communication modules indirectly transmit the electrical parameter information to an external concentrator in a mutual transmission mode; or the external control signal is indirectly transmitted from the concentrator to the corresponding wireless communication module.
7. A metrology conditioning device as claimed in claim 1, wherein: the low-frequency reversing module is a full-bridge two-pole circuit, and the full-bridge two-pole circuit comprises four MOS (metal oxide semiconductor) tubes in bridge design and a voltage-stabilizing current-limiting circuit which is respectively connected with the four MOS tubes in parallel; the full-bridge two-pole circuit commutates at a low frequency, outputs stable voltage when the high-voltage sodium-white lamp is started, and realizes current limiting after the starting is finished.
8. A metrology conditioning device as claimed in claim 1, wherein: the low-frequency reversing module is a half-bridge two-pole circuit which comprises two diodes and two MOS (metal oxide semiconductor) tubes in bridge design, and a voltage-stabilizing current-limiting circuit which is respectively connected with the two diodes and the two MOS tubes in parallel; the half-bridge two-pole circuit commutates at low frequency and realizes current limiting after the high-voltage sodium white lamp is started.
CN201610815674.6A 2016-09-09 2016-09-09 Measurement regulation and control device of high-pressure sodium white lamp Active CN106304583B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201369872Y (en) * 2008-10-30 2009-12-23 华美电子股份有限公司 Intelligent power-saving automatic dimming electronic ballast
CN201846518U (en) * 2009-12-25 2011-05-25 哈尔滨电工仪表研究所 Novel electronic ballast
CN102291909A (en) * 2011-07-18 2011-12-21 黄山市高立亚照明电器有限责任公司 Special system-on-chip (SOC) technique for electronic ballast of high-intensity discharge (HID) lamp
CN203086833U (en) * 2012-11-28 2013-07-24 张家港智能电力研究院有限公司 Street lamp electronic intelligent ballast
CN206042487U (en) * 2016-09-09 2017-03-22 深圳市前海用电物联网科技有限公司 Volume measure and regulate accuse device of white sodium lamp of high pressure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201369872Y (en) * 2008-10-30 2009-12-23 华美电子股份有限公司 Intelligent power-saving automatic dimming electronic ballast
CN201846518U (en) * 2009-12-25 2011-05-25 哈尔滨电工仪表研究所 Novel electronic ballast
CN102291909A (en) * 2011-07-18 2011-12-21 黄山市高立亚照明电器有限责任公司 Special system-on-chip (SOC) technique for electronic ballast of high-intensity discharge (HID) lamp
CN203086833U (en) * 2012-11-28 2013-07-24 张家港智能电力研究院有限公司 Street lamp electronic intelligent ballast
CN206042487U (en) * 2016-09-09 2017-03-22 深圳市前海用电物联网科技有限公司 Volume measure and regulate accuse device of white sodium lamp of high pressure

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