CN105813353B - A kind of intelligence eliminates the protection circuit of UV lamp impact and its method - Google Patents
A kind of intelligence eliminates the protection circuit of UV lamp impact and its method Download PDFInfo
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- CN105813353B CN105813353B CN201610307795.XA CN201610307795A CN105813353B CN 105813353 B CN105813353 B CN 105813353B CN 201610307795 A CN201610307795 A CN 201610307795A CN 105813353 B CN105813353 B CN 105813353B
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of intelligence eliminates the protection circuit of UV lamp impact, including MCU controller, zero passage detection module, safe voltage detection module and electronic switch；The approximate zero potential point of zero passage detection module detection UV lamp communication power supply phase voltage is simultaneously exported；The safe voltage of safe voltage detection module detection UV lamp capacitance voltage is simultaneously exported；Electronic switch is connected in the ac power supply circuit of UV lamp；The MCU controller input zero passage detection signal of zero passage detection module and the safe voltage detection signal of safe voltage detection module, control the break-make of electronic switch according to the zero passage detection signal and safe voltage detection signal output control signal.The invention allows for a kind of method that intelligence eliminates UV lamp impact.The present invention can fundamentally solve the problems, such as that the high current that UV lamp is produced when starting is impacted to electronic switch component.
Description
Technical field
The present invention relates to a kind of intelligence eliminates the protection circuit of UV lamp impact and its method.
Background technology
With the continuous improvement of people's living standard, day by day enriching for material and cultural life, the product with UV lamp is had extensively
General demand, but in application technology, UV lamp starts the overcurrent for producing to be affected on the impact of electronic switch component, does not all have always
Have and solved at all, had a strong impact on the market development of UV lamp.
UV lamp is ultraviolet disinfection lamp, and UV lamp is impacted, and is UV lamp when opening, there is the impact of overcurrent, electricity now
Flow valuve is 6-10 times of normal work rated value, if being switched on or switched off electronic switch portion in the high current area of communication power supply
, can there is serious phenomenon of arc discharge in part, cause the fusing of electrical switch contacts or the service life of impact electronic switch.
Content of the invention
The purpose of the present invention is exactly to overcome the deficiencies in the prior art, provides the protection circuit that a kind of intelligence eliminates UV lamp impact
And its method, when can fundamentally solve the problems, such as that UV lamp starts, high current is impacted to electronic switch component.
For achieving the above object, the technical solution used in the present invention is as follows：
A kind of intelligence eliminates the protection circuit of UV lamp impact, including MCU controller, zero passage detection module, safe voltage inspection
Survey module and electronic switch；
Zero passage detection module, detects the approximate zero potential point of UV lamp communication power supply phase voltage and exports；
Safe voltage detection module, detects the safe voltage of UV lamp capacitance voltage and exports；
Electronic switch, is connected in the ac power supply circuit of UV lamp；
MCU controller, the zero passage detection signal of input zero passage detection module output and the output of safe voltage detection module
Safe voltage detection signal, according to the zero passage detection signal and safe voltage detection signal output control signal, controls electronic cutting
The break-make of pass.
In one embodiment, comprising drive module and relay, the MCU controller is through driving for the electronic switch
Module drive relay works, and by adhesive or the disconnection of relay contact, executes opening or closing for UV lamp.
, most preferably comprising rectification module and photoelectric coupling module, the communication power supply of UV lamp is through whole for the zero passage detection module
Photoelectric coupling module is delivered to after flow module rectification, and the photoelectric coupling module is exported the zero of UV lamp communication power supply phase voltage
There is the zero passage detection signal of saltus step near potential point.In one embodiment, the rectification module adopts halfwave rectifier mould
Block, the half-wave rectification block include diode D2, and the communication power supply to UV lamp does halfwave rectifier, the photoelectric coupling module
Comprising photoelectrical coupler U2, located at current limiting safeguard resistor R5, R6 of photoelectrical coupler U2 input, defeated located at photoelectrical coupler U2
The pull-up resistor R7 for going out end and the resistance R8, the electric capacity C2 that play capacitance-resistance filter effect.The zero passage detection module passes through isolation detection
Mode, detect UV lamp power supply phase voltage approximate zero potential point, be electronic switch break-make provide basic point.
The safe voltage detection module most preferably comprising rectification module and with photoelectric coupling module, the capacitance voltage warp of UV lamp
Photoelectric coupling module is delivered to after rectification module rectification, and the photoelectric coupling module output is sent out in the safe voltage of UV lamp capacitance voltage
The safe voltage detection signal of raw saltus step.In one embodiment, the rectification module adopts half-wave rectification block, the half-wave
Rectification module includes diode D1, and the capacitance voltage to UV lamp does halfwave rectifier, and the photoelectric coupling module includes photoelectric coupling
Device U1, located at current limiting safeguard resistor R1, R2 of photoelectrical coupler U1 input, located at the pull-up electricity of photoelectrical coupler U1 output end
Resistance R3 and resistance R4, the electric capacity C1 for playing capacitance-resistance filter effect.The safe voltage detection module mainly detects UV lamp electric capacity
Storage voltage, only when capacitance voltage drops to below safe voltage and power supply electric current is in approximate zero-current point region,
Just allow to reclose or disconnect electronic switch.
A kind of method that intelligence eliminates UV lamp impact, comprises the steps of：
If MCU controller detects UV lamp capacitance voltage more than safe voltage, the MCU controller just controls electronic cutting
Break-make is forbidden in pass, forbids executing UV lamp switch；
If MCU controller detects UV lamp capacitance voltage drops to below safe voltage, the MCU controller just detects UV
The approximate zero potential point of lamp communication power supply phase voltage, if detecting approximate zero potential point, just electric from detecting approximate zero
Gesture lights time delay T3 time output control signal, controls the break-make of electronic switch, executes UV lamp switch, otherwise, controls electronic cutting
Break-make is forbidden in pass, forbids executing UV lamp switch；
The time value of T3 is：T3=0.75T-T1-T2；
Wherein：
T3 is that MCU controller lights, from approximate zero potential is detected, the time that time delay output control signal electron is switched；
T is the UV lamp communication power supply cycle；
T1 is the time zone of approximate zero-current point, is obtained by oscillograph observation；
T2 is the make-and-break time of electronic switch, by looking into device specification book.
The present invention detects the capacitance voltage value of UV lamp by safe voltage detection module, while being examined by zero passage detection module
The approximate zero potential point of UV lamp power supply phase voltage is surveyed, MCU controller once detects the magnitude of voltage of UV lamp electric capacity and drops to
Below defined safe voltage, and power supply phase voltage is just permissible behind approximate zero potential point position, time delay T3 time
Output control signal control electronic switch is switched on or switched off, electronic switch really connect in the approximate zero-current point region of electric current or
Disconnect, the rush of current of generation is minimum, so as to reach the purpose that intelligence eliminates UV lamp impact.
Description of the drawings
Fig. 1 is the circuit block diagram of embodiment；
Fig. 2 is the circuit theory diagrams of embodiment；
Fig. 3 is the zero passage detection signal UB signal corresponding with the voltage UF after UV lamp power supply halfwave rectifier of embodiment
Figure；
Fig. 4 is the approximate zero potential point detects schematic diagram of UV lamp communication power supply phase voltage；
Fig. 5 is UV lamp starting current IC curve and capacitance voltage UC release profiles schematic diagram；
Fig. 6 is the corresponding time control curve synoptic diagram of UV lamp communication power supply electric current I and phase voltage U.
Specific embodiment
Below in conjunction with the accompanying drawings the embodiment of the present invention is described in detail.
As shown in figure 1, embodiment includes power module, MCU controller, zero passage detection module, safe voltage detection module
And electronic switch；Power module provides required power supply to MCU controller and UV lamp, and zero passage detection module detects UV lamp Alternating Current Power Supply
The approximate zero potential point of the phase voltage of power supply is simultaneously exported；The safe voltage of safe voltage detection module detection UV lamp capacitance voltage is simultaneously defeated
Go out；Electronic switch is connected in the ac power supply circuit of UV lamp；The zero passage detection of MCU controller input zero passage detection module output
Signal and the safe voltage detection signal of safe voltage detection module output, detect according to the zero passage detection signal and safe voltage
Signal output control signal, controls the break-make of electronic switch, to switch on or off UV lamp ac power supply circuit.
As shown in Fig. 2 the zero passage detection module of embodiment is comprising half-wave rectification block and photoelectric coupling module, the friendship of UV lamp
Stream power supply is delivered to photoelectric coupling module after half-wave rectification block rectification, and the photoelectric coupling module output is exchanged in UV lamp
There is the zero passage detection signal UB of saltus step near the approximate zero potential point of power supply phase voltage.The exchange supply power supply of UV lamp connects
L end and N-terminal is connect, half-wave rectification block includes diode D2, the communication power supply to UV lamp does halfwave rectifier, photoelectric coupling mould
Block includes photoelectrical coupler U2, current limiting safeguard resistor R5, R6 located at photoelectrical coupler U2 input, located at photoelectrical coupler U2
The pull-up resistor R7 of output end and the resistance R8, the electric capacity C2 that play capacitance-resistance filter effect.
As shown in Fig. 2 the safe voltage detection module of embodiment comprising half-wave rectification block and with photoelectric coupling module, UV
The capacitance voltage UC of lamp is delivered to photoelectric coupling module after half-wave rectification block rectification, and the photoelectric coupling module is exported in UV lamp
There is the safe voltage detection signal UA of saltus step in the safe voltage of capacitance voltage.The capacitance voltage UC of UV lamp takes from C-terminal and N-terminal,
Half-wave rectification block does halfwave rectifier comprising diode D1, the capacitance voltage UC to UV lamp, and the photoelectric coupling module includes light
Electric coupler U1, located at current limiting safeguard resistor R1, R2 of photoelectrical coupler U1 input, located at photoelectrical coupler U1 output end
Pull-up resistor R3 and the resistance R4, the electric capacity C1 that play capacitance-resistance filter effect.
As shown in Fig. 2 port D of the electronic switch of embodiment comprising drive module and relay RLY, MCU controller is defeated
Going out control signal, relay RLY adhesive or disconnection being driven through drive module, the switch contact of relay RLY is connected on UV lamp
Ac power supply circuit in, for switching on or off UV lamp ac power supply circuit, drive module include resistance R9 and triode Q1,
With drive relay RLY coil electricity whether.
As shown in Fig. 1, Fig. 2, zero passage detection signal UB, the MCU control of the port B input zero passage detection module of MCU controller
The port D output control of safe voltage detection signal UA, the MCU controller of the port A input safe voltage detection module of device processed
Signal, one end of the resistance R9 of the port D connection drive module of the MCU controller.
As shown in figure 1, embodiment is MCU controller by collecting zero passage detection module and safe voltage detection module feedback
Information, send order-driven electronic switch, realize UV lamp ON/OFF control.As shown in Fig. 2 D1, R1, R2, R3, R4, U1,
C1 constitutes safe voltage detection module, and if above defined safe voltage, A point is presented as low level, C to the voltage UC of C point
If the voltage UC of point is less than defined safe voltage, A point is presented as high level, and MCU controller is changed by the level of A point
The storing electricity of detection electric capacity CBB.D2, R5, R6, R7, R8, U2, C2 constitute zero passage detection module, and D2 is civil power sinusoidal ac
The phase voltage U rectification in source is half-wave voltage UF waveform, and the level of B point becomes the change for turning to the approximate zero potential point of power supply phase voltage,
As shown in figure 3, UF is the voltage curve after UV lamp communication power supply halfwave rectifier, UB is the zero passage detection of zero passage detection module
Signal, is the level change curve of MCU controller zero passage detection port B.When communication power supply amplitude is interval in A1A2, light
Electric coupler U2 is turned on, and now MCU director port B is presented as low level, when communication power supply amplitude is interval in A2A5,
Photoelectrical coupler U2 is not turned on, and now MCU director port B is presented as high level, in A1 point, the approximate zero potential point position of A5 point
Put, the level of MCU controller zero passage detection port B from high level to low transition, so as to MCU controller can be according to end
The level change of mouth B, determines approximate zero potential point position A1 and A5.As shown in Fig. 2 level of the MCU controller by detection B point
Change confirms zero potential point position, the voltage of the level change detection electric capacity CBB by detecting A point, confirms to drop to safe electricity
Pressure is following, and by detection A point and the information of B point, time delay exports low and high level control signal to D point to MCU controller, by NPN
Triode Q1, drives adhesive or the disconnection of relay RLY, so as to control the light on and off of UV lamp.As shown in figure 4, T is Alternating Current Power Supply electricity
The cycle time in source, relevant with the frequency of power supply, the such as mains frequency of 50HZ, T=20MS, A1 point and A5 point are power supply phase
The approximate zero potential point of voltage, A3 point are power supply phase voltage zero potential point.As shown in figure 5, being UV lamp starting current IC curve and electricity
Hold voltage UC curve, from the figure, it can be seen that UV lamp is stable current point in H point after the Ts time, current value now is steady
Fixed, electric current is little, but in start-up course, the current value of F point is 5-10 times of the current value of H point；Bent from capacitance voltage UC release
Line can see that electric capacity CBB is reached maximum after the Ts time, then slowly declines after UV lamp startup, is declined in Tc position
To minimum of a value and burning voltage is close to, E point is release safe voltage；As shown in fig. 6, being time control curve synoptic diagram；As Fig. 5
Shown, E point is capacitance voltage safe voltage point, when MCU controller detects the storage voltage of electric capacity CBB higher than E point voltage
When, relay RLY adhesive or disconnection is not allowed, when capacitance voltage UC drops to below E point voltage, now capacitance voltage is
Safe capacitance voltage, now meets the primary condition of relay adhesive or disconnection, but is intended to relay adhesive or disconnects also need to
The state of detection zero potential point；Under conditions of safe capacitance voltage, as shown in fig. 6, T1 is approximate zero-current point time zone,
Interval in A41A43, A42 point is current zero, and the interval interval OA1 that is equal to of A42A43 that is equal to of A41A42 is interval, in T1 time zone
Domain adhesive disconnects relay, and the electric current for now bearing is minimum, and the impact for causing is minimum, and arcing energy impact is minimum.In order to reach
To relay in the adhesive of T1 time zone or disconnection, it is necessary for finding the zero potential point of power supply phase voltage U and relay
Mechanical pickup time, so need zero passage detection module to detect the approximate zero potential point of UV lamp power supply, as shown in figure 3, passing through MCU
The signal of controller detection zero passage detection module, it is approximate zero potential point that can detect A1 point and A5 point.As shown in fig. 6, T3
It is that T is UV from the time for detecting approximate zero potential point A1 time delay and sending instructions to the port D of MCU controller drive module
Lamp communication power supply cycle, T1 are the time zone of approximate current zero point, are obtained by oscillograph observation, are to allow relay
The permission of adhesive or disconnection is interval, and T2 is the mechanical pickup time of relay, by looking into device specification book.UV lamp concatenation electricity
Hold and purely capacitive characteristic impedance is presented as, as shown in fig. 6, capacitive load currents I and voltage U differ 90 °.
The time value of T3 is：T3=0.75T-T1-T2；
MCU controller prolongs when detecting capacitance voltage and dropping to below safe voltage and detect approximate zero potential point
When the T3 time export adhesive or disconnect control signal, through drive module control relay action, relay time delay T2 time adhesive
Or disconnect, UV lamp switch operation is executed, now, relay is that the rush of current for bearing is most in the adhesive of T1 time zone or disconnection
Little, arcing and energy impact are minimum, thus UV lamp to open the impact for causing minimum.MCU controller detects capacitance voltage in safety
More than voltage or when can't detect approximate zero potential point, control relay forbids adhesive or disconnection, forbids executing UV lamp switch fortune
OK, the effect that intelligence eliminates UV lamp impact is reached with this.
The approximate zero potential point of zero passage detection module detection voltage, MCU controller is in the approximate zero potential point time delay of voltage
T3 time output control signal drives the actuating of relay to drive module, and the relay can be just in the approximate zero-current point of electric current
Adhesive or release in time zone T1.
The electronic switch of embodiment includes drive module and relay RLY, it is of course also possible to use other types of electronics
Switch.
It is summarized as follows：
A kind of method that intelligence eliminates UV lamp impact, comprises the steps of：
If MCU controller detects UV lamp capacitance voltage more than safe voltage, the MCU controller just controls electronic cutting
Break-make is forbidden in pass, forbids executing UV lamp switch；
If MCU controller detects UV lamp capacitance voltage drops to below safe voltage, the MCU controller just detects UV
The approximate zero potential point of lamp communication power supply phase voltage, if detecting approximate zero potential point, just electric from detecting approximate zero
Gesture lights time delay T3 time output control signal, controls the break-make of electronic switch, executes UV lamp switch, otherwise, controls electronic cutting
Break-make is forbidden in pass, forbids executing UV lamp switch；
The time value of T3 is：T3=0.75T-T1-T2；
Wherein：
T3 is that MCU controller lights, from approximate zero potential is detected, the time that time delay output control signal electron is switched；
T is the UV lamp communication power supply cycle；
T1 is approximate zero-current point time zone, is obtained by oscillograph observation；
T2 is the make-and-break time of electronic switch, by looking into device specification book.
It is exactly that MCU controller is dropped under safe voltage in UV lamp electric capacity residual voltage and guarantees electronics that intelligence eliminates UV lamp impact
Switch in the approximate zero-current point time zone T1 of electric current of UV lamp communication power supply closure or disconnect.
Claims (1)
1. a kind of method that intelligence eliminates UV lamp impact, comprises the steps of：
If MCU controller detects UV lamp capacitance voltage more than safe voltage, the MCU controller just controls electronic switch to prohibit
Only break-make, forbids executing UV lamp switch；
If MCU controller detects UV lamp capacitance voltage drops to below safe voltage, the MCU controller just detects that UV lamp is handed over
The approximate zero potential point of stream power supply phase voltage, if detecting approximate zero potential point, just from detecting approximate zero potential point
Time delay T3 time output control signal is played, controls the break-make of electronic switch, UV lamp switch is executed, otherwise, control electronic switch is prohibited
Only break-make, forbids executing UV lamp switch；
The time value of T3 is：T3=0.75T-T1-T2；
Wherein：
T3 is that MCU controller lights, from approximate zero potential is detected, the time that time delay output control signal electron is switched；
T is the UV lamp communication power supply cycle；
T1 is the time zone of approximate zero-current point, is obtained by oscillograph observation；
T2 is the make-and-break time of electronic switch, by looking into device specification book.
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| CN108770159A (en) * | 2018-07-27 | 2018-11-06 | 广东好太太科技集团股份有限公司 | A kind of circuit and method improving UV lamp service life |
| CN111239469B (en) * | 2018-11-28 | 2022-09-13 | 安徽美芝精密制造有限公司 | Impact signal detection circuit and alternating current power supply equipment |
| CN112146253B (en) * | 2020-09-23 | 2021-12-17 | 海信（山东）空调有限公司 | Air conditioner and compressor control method thereof |
| CN114039381A (en) * | 2021-11-22 | 2022-02-11 | 江苏莱提电气股份有限公司 | Flexible grid-connected device and method for three-phase four-wire active filter module |
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| CN101610625A (en) * | 2009-07-20 | 2009-12-23 | 江苏宏微科技有限公司 | Dynamic energy-saving lighting power supply device |
| CN102752926A (en) * | 2012-06-27 | 2012-10-24 | 上舜照明（中国）有限公司 | LED (light-emitting diode) constant current driving power supply capable of resisting alternating voltage surge |
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| US6969959B2 (en) * | 2001-07-06 | 2005-11-29 | Lutron Electronics Co., Inc. | Electronic control systems and methods |
| CN102647830B (en) * | 2012-03-21 | 2016-08-03 | 无锡佳居智能科技有限公司 | Illumination control apparatus based on ZigBee, system and method |
| CN105098805B (en) * | 2014-05-19 | 2018-10-26 | 青岛海尔智能家电科技有限公司 | A kind of voltage zero-cross switching control verification method and switching control device |
| CN205584598U (en) * | 2016-05-11 | 2016-09-14 | 广东好太太智能科技有限公司 | Protection circuit that UV lamp strikes is eliminated to intelligence |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610625A (en) * | 2009-07-20 | 2009-12-23 | 江苏宏微科技有限公司 | Dynamic energy-saving lighting power supply device |
| CN102752926A (en) * | 2012-06-27 | 2012-10-24 | 上舜照明（中国）有限公司 | LED (light-emitting diode) constant current driving power supply capable of resisting alternating voltage surge |
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