CN205584598U - Protection circuit that UV lamp strikes is eliminated to intelligence - Google Patents
Protection circuit that UV lamp strikes is eliminated to intelligence Download PDFInfo
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- CN205584598U CN205584598U CN201620421827.4U CN201620421827U CN205584598U CN 205584598 U CN205584598 U CN 205584598U CN 201620421827 U CN201620421827 U CN 201620421827U CN 205584598 U CN205584598 U CN 205584598U
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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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Abstract
The utility model provides a protection circuit that UV lamp strikes is eliminated to intelligence, includes MCU controller, zero -cross detection module, safe voltage detection module and electronic switch, zero -cross detection module detects the approximate zero potential point and the output of UV lamp AC power supply phase voltage, safe voltage detection module detects the safe voltage and the output of UV lamp capacitance voltage, electronic switch establishes ties in the alternating current power supply loop of UV lamp, MCU controller input zero -cross detection module's zero -crossing detection signal and safe voltage detection module's safe voltage detected signal detect the break -make that signal output control signal controlled zero -cross detection module 0 according to this zero -crossing detection signal and safe voltage. The utility model discloses can solve the heavy current that produces caused the impact to the electronic switch part problem when the UV lamp starts by fundamentally.
Description
Technical field
This utility model relates to a kind of intelligence and eliminates the protection circuit of UV lamp impact.
Background technology
Along with improving constantly of people's living standard, day by day enriching of material and cultural life, the product of band UV lamp is had extensively
Demand, but in application technology, UV lamp starts the overcurrent produced to be affected, the most all the impact of electrical switch parts
Solved the most at all, had a strong impact on the market development of UV lamp.
UV lamp i.e. ultraviolet disinfection lamp, UV lamp impacts, and is UV lamp when opening, there is the impact of overcurrent, electricity now
Flow valuve is 6-10 times of rated value of normally working, if being switched on or switched off electrical switch in the big Current Zone of communication power supply
, can there is serious phenomenon of arc discharge in parts, cause the fusing of electrical switch contacts or affect the service life of electrical switch.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art exactly, it is provided that a kind of intelligence eliminates the protection electricity of UV lamp impact
Road, can fundamentally solve the problem that when UV lamp starts, electrical switch parts are impacted by big electric current.
For achieving the above object, the technical solution adopted in the utility model 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 electrical switch；
Zero passage detection module, detects the approximation 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；
Electrical 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 safety of safe voltage detection module output
Voltage detection signal, detects signal output control signal according to this zero passage detection signal and safe voltage, controls electrical switch
Break-make.
In one embodiment, described electrical switch comprises driving module and relay, and described MCU controller is through driving
Module drive relay works, and by adhesive or the disconnection of relay contact, performs opening or closing of UV lamp.
Described zero passage detection module most preferably comprises rectification module and photoelectric coupling module, and the communication power supply of UV lamp is rectified
Being delivered to photoelectric coupling module after module rectification, this photoelectric coupling module exports in the zero of UV lamp communication power supply phase voltage
The zero passage detection signal of saltus step is there is near potential point.In one embodiment, described rectification module uses halfwave rectifier mould
Block, this half-wave rectification block comprises diode D2, and the communication power supply of UV lamp is done halfwave rectifier, described photoelectric coupling
Module comprises photoelectrical coupler U2, is located at current limiting safeguard resistor R5, R6 of photoelectrical coupler U2 input, is located at light thermocouple
The pull-up resistor R7 of clutch U2 outfan and play the resistance R8 of capacitance-resistance filter effect, electric capacity C2.Described zero passage detection module
By the way of isolation detection, the approximation zero potential point of detection UV lamp power supply phase voltage, the break-make for electrical switch carries
For basic point.
Described safe voltage detection module most preferably comprise rectification module and and photoelectric coupling module, the capacitance voltage of UV lamp is through whole
Being delivered to photoelectric coupling module after flow module rectification, the output of this photoelectric coupling module is sent out in the safe voltage of UV lamp capacitance voltage
The safe voltage detection signal of raw saltus step.In one embodiment, described rectification module uses half-wave rectification block, should be partly
Ripple rectification module comprises diode D1, and the capacitance voltage of UV lamp is done halfwave rectifier, and described photoelectric coupling module comprises photoelectricity
Bonder U1, is located at current limiting safeguard resistor R1, R2 of photoelectrical coupler U1 input, is located at photoelectrical coupler U1 output
End pull-up resistor R3 and play the resistance R4 of capacitance-resistance filter effect, electric capacity C1.The mainly inspection of described safe voltage detection module
Survey the storage voltage of UV lamp electric capacity, only drop to below safe voltage and power supply electric current in approximation when capacitance voltage
Zero-current point region, just allows reclose or disconnect electrical switch.
This utility model is by the capacitance voltage value of safe voltage detection module detection UV lamp, simultaneously by zero passage detection module
The approximation zero potential point of detection UV lamp power supply phase voltage, MCU controller once detects the magnitude of voltage of UV lamp electric capacity
Drop to below defined safe voltage, and power supply phase voltage is in approximation zero potential point position, it is possible to by setting
Delay time time delay output control signal controls electrical switch and is switched on or switched off, and makes electrical switch in the approximation zero-current point of electric current
Region is really switched on or switched off, and at this moment, rush of current is minimum, reaches intelligence and eliminates the purpose of UV lamp impact.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of embodiment；
Fig. 2 is the circuit theory diagrams of embodiment；
Fig. 3 is the corresponding schematic diagram of voltage UF after zero passage detection signal UB and the UV lamp power supply halfwave rectifier of embodiment；
Fig. 4 is UV lamp communication power supply phase voltage approximation zero potential point detection schematic diagram；
Fig. 5 is UV lamp starting current IC curve and capacitance voltage UC release profiles schematic diagram；
Fig. 6 is the corresponding time controlling curve schematic diagram of UV lamp communication power supply electric current I and phase voltage U.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is described in detail.
As it is shown in figure 1, embodiment includes power module, MCU controller, zero passage detection module, safe voltage detection module
And electrical switch；Power module provides required power supply, zero passage detection module detection UV lamp to hand over to MCU controller and UV lamp
The phase voltage of stream power supply approximates zero potential point and exports；The safety of safe voltage detection module detection UV lamp capacitance voltage
Voltage also exports；Electrical switch is connected in the ac power supply circuit of UV lamp；MCU controller input zero passage detection module is defeated
The safe voltage detection signal of the zero passage detection signal gone out and the output of safe voltage detection module, according to this zero passage detection signal and
Safe voltage detection signal output control signal, controls the break-make of electrical switch, returns switching on or off UV lamp Alternating Current Power Supply
Road.
As in figure 2 it is shown, the zero passage detection module of embodiment comprises 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 output of this photoelectric coupling module is handed at UV lamp
The zero passage detection signal UB of saltus step is there is near the approximation zero potential point of stream power supply phase voltage.The exchange supply electricity of UV lamp
Source connects L end and N end, and half-wave rectification block comprises diode D2, and the communication power supply of UV lamp is done halfwave rectifier,
Photoelectric coupling module comprises photoelectrical coupler U2, is located at current limiting safeguard resistor R5, R6 of photoelectrical coupler U2 input, if
In photoelectrical coupler U2 outfan pull-up resistor R7 and the resistance R8 of capacitance-resistance filter effect, electric capacity C2.
As in figure 2 it is shown, the safe voltage detection module of embodiment comprises half-wave rectification block and and photoelectric coupling module, UV
The capacitance voltage UC of lamp is delivered to photoelectric coupling module after half-wave rectification block rectification, and this photoelectric coupling module exports at UV
The safe voltage detection signal UA of the safe voltage generation saltus step of lamp capacitance voltage.The capacitance voltage UC of UV lamp take from C end and
N end, half-wave rectification block comprises diode D1, and the capacitance voltage UC of UV lamp is done halfwave rectifier, described photoelectric coupling mould
Block comprises photoelectrical coupler U1, is located at current limiting safeguard resistor R1, R2 of photoelectrical coupler U1 input, is located at photoelectric coupling
The pull-up resistor R3 of device U1 outfan and play the resistance R4 of capacitance-resistance filter effect, electric capacity C1.
As in figure 2 it is shown, the electrical switch of embodiment comprises driving module and relay R LY, the port D of MCU controller
Output control signal, through driving module drive relay R LY adhesive or disconnection, the switch contact of this relay R LY is connected on
In the ac power supply circuit of UV lamp, be used for switching on or off UV lamp ac power supply circuit, drive module comprise resistance R9 and
Whether triode Q1, drive the coil electricity of relay R LY.
Such as Fig. 1, shown in Fig. 2, the zero passage detection signal UB, MCU of the port B input zero passage detection module of MCU controller
The safe voltage detection signal UA of the port A input safe voltage detection module of controller, the port D output of MCU controller
Control signal, the port D of this MCU controller connects the one end of the resistance R9 driving module.
Feed back as it is shown in figure 1, embodiment is MCU controller by collecting zero passage detection module and safe voltage detection module
Information, send order-driven electrical switch, it is achieved the ON/OFF of UV lamp controls.As in figure 2 it is shown, D1, R1, R2, R3,
R4, U1, C1 form safe voltage detection module, and the voltage UC of C point is if above defined safe voltage, A point body
Being now low level, if the voltage UC of C point is less than defined safe voltage, A point is presented as high level, and MCU controls
Device is by the storing electricity of the level change-detection electric capacity CBB of A point.D2, R5, R6, R7, R8, U2, C2 formed
Zero detection module, D2 is half-wave voltage UF waveform the phase voltage U rectification of civil power sine ac power supply, and the level of B point becomes
Turn to the change of power supply phase voltage approximation zero potential point, as it is shown on figure 3, UF is UV lamp communication power supply halfwave rectifier
After voltage curve, UB is the zero passage detection signal of zero passage detection module, is the electricity of MCU controller zero passage detection port B
Flat change curve.When communication power supply amplitude is in A1A2 interval, photoelectrical coupler U2 turns on, and now MCU controls
Device port B is presented as low level, and when communication power supply amplitude is in A2A5 interval, photoelectrical coupler U2 is not turned on,
Now MCU director port B is presented as high level, in A1 point, A5 point approximation zero potential point position, MCU controller mistake
Zero detection port B level from high level to low transition, thus, MCU controller can be according to the level of port B
Change, determines approximation zero potential point position A1 and A5.As in figure 2 it is shown, MCU controller is become by the level of detection B point
Change and confirm zero potential point position, by the voltage of the level change-detection electric capacity CBB of detection A point, confirm to drop to safe electricity
Below pressure, MCU controller is by detection A point and the information of B point, and time delay output low and high level control signal is to D point, logical
Cross NPN audion Q1, drive adhesive or the disconnection of relay R LY, thus control the light on and off of UV lamp.As shown in Figure 4,
T is the cycle time of communication power supply, relevant with the frequency of power supply, such as the mains frequency of 50HZ, and T=20MS,
A1 point and A5 point approximate zero potential point for power supply phase voltage, and A3 point is power supply phase voltage zero potential point.As it is shown in figure 5, be
UV lamp starting current IC curve and capacitance voltage UC curve, from the figure, it can be seen that UV lamp at H point is after the Ts time
Stable current point, current value now is stable, and electric current is little, but in start-up course, the current value of F point is H point
Current value 5-10 times；From capacitance voltage UC release profiles it will be seen that electric capacity CBB is after UV lamp starts, in the Ts time
After reach maximum, the most slowly decline, drop to minima in Tc position and close to burning voltage, E point is release peace
Full voltage；As shown in Figure 6, for time controlling curve schematic diagram；As it is shown in figure 5, 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, do not allow the adhesive of relay R LY or
Disconnecting, when capacitance voltage UC drops to below E point voltage, now capacitance voltage is safe capacitance voltage, now meets
Relay adhesive or the primary condition of disconnection, but it is intended to relay adhesive or disconnection also needs to detect the state of zero potential point；?
Under conditions of safe capacitance voltage, as shown in Figure 6, T1 is approximation zero-current point time zone, is in A41A43 interval,
A42 point is current zero, and A41A42 interval is interval, in T1 time zone adhesive equal to OA1 equal to A42A43 interval
Or disconnection relay, the electric current now born is minimum, and the impact caused is minimum, and arcing energy impact is minimum.In order to reach to continue
Electrical equipment, in T1 time zone adhesive or disconnection, is necessary for the machine of zero potential point and the relay finding power supply phase voltage U
Tool pickup time, so needing the approximation zero potential point of zero passage detection module detection UV lamp power supply, as it is shown on figure 3, pass through
The signal of MCU controller detection zero passage detection module, can detect that A1 point and A5 point are for approximation zero potential point.Such as Fig. 6
Shown in, T3 is from detecting that the approximation zero potential point A1 time delay port D to MCU controller sends instructions to drive module
Time, T is the UV lamp communication power supply cycle, and T1 is the time zone of approximate current zero point, is observed by oscillograph
Arriving, be the permission interval allowing relay adhesive or disconnection, T2 is the mechanical pickup time of relay, advises by looking into device
Lattice book understands.UV lamp serial capacitance is presented as purely capacitive characteristic impedance, as shown in Figure 6, capacitive load currents I and voltage U
Differ 90 °.
The time value of T3 is: T3=0.75T-T1-T2；
MCU controller detect capacitance voltage drop to below safe voltage and detect approximation zero potential point time, time delay
The T3 time exports adhesive or disconnects control signal, through driving module to control the actuating of relay, relay time delay T2 time adhesive
Or disconnect, perform UV lamp switch and run, now, relay is in T1 time zone adhesive or disconnection, and the electric current born rushes
Hit minimum, arcing and energy impact minimum, therefore the impact minimum caused opened by UV lamp.MCU controller detects electric capacity electricity
When being pressed in more than safe voltage or can't detect approximation zero potential point, control relay and forbid adhesive or disconnection, forbid performing
UV lamp switch runs, and reaches intelligence with this and eliminates the effect of UV lamp impact.
The approximation zero potential point of zero passage detection module detection voltage, MCU controller is at the approximation zero potential point time delay T3 of voltage
Time output control signal is given and is driven the module drive actuating of relay, and this relay can be just when the approximation zero-current point of electric current
Between adhesive or release in the T1 of region.
The electrical switch of embodiment comprises driving module and relay R LY, it is of course also possible to use other type of electronic cutting
Close.
It is exactly that MCU controller drops to guarantee electronics under safe voltage in UV lamp electric capacity residual voltage that intelligence eliminates the impact of UV lamp
Switch and close in the electric current of UV lamp communication power supply approximates zero-current point time zone T1 or disconnect.
Claims (6)
1. one kind intelligence eliminate UV lamp impact protection circuit, it is characterised in that: include MCU controller, zero passage detection module,
Safe voltage detection module and electrical switch；
Zero passage detection module, detects the approximation 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；
Electrical 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 safety of safe voltage detection module output
Voltage detection signal, detects signal output control signal according to this zero passage detection signal and safe voltage, controls electrical switch
Break-make.
Protection circuit the most according to claim 1, it is characterised in that: described electrical switch comprises driving module and relay,
Described MCU controller is through driving the work of module drive relay.
Protection circuit the most according to claim 1, it is characterised in that: described zero passage detection module comprises rectification module and light
Electric coupling module, is delivered to photoelectric coupling module after the communication power supply rectified module rectification of UV lamp, this photoelectric coupling
The zero passage detection signal of saltus step is there is in module output near the zero potential point of UV lamp communication power supply phase voltage.
Protection circuit the most according to claim 3, it is characterised in that: described rectification module uses half-wave rectification block, should
Half-wave rectification block comprises diode D2, and the communication power supply of UV lamp is done halfwave rectifier, described photoelectric coupling module bag
Containing photoelectrical coupler U2, it is located at current limiting safeguard resistor R5, R6 of photoelectrical coupler U2 input, is located at photoelectrical coupler
The pull-up resistor R7 of U2 outfan and play the resistance R8 of capacitance-resistance filter effect, electric capacity C2.
Protection circuit the most according to claim 1, it is characterised in that: described safe voltage detection module comprises rectification module
With photoelectric coupling module, it is delivered to photoelectric coupling module after the capacitance voltage rectified module rectification of UV lamp, this photoelectric coupling
Module output is at the safe voltage detection signal of the safe voltage generation saltus step of UV lamp capacitance voltage.
Protection circuit the most according to claim 5, it is characterised in that: described rectification module uses half-wave rectification block, should
Half-wave rectification block comprises diode D1, and the capacitance voltage of UV lamp is done halfwave rectifier, and described photoelectric coupling module comprises light
Electric coupler U1, is located at current limiting safeguard resistor R1, R2 of photoelectrical coupler U1 input, is located at photoelectrical coupler U1 defeated
Go out the pull-up resistor R3 of end and play the resistance R4 of capacitance-resistance filter effect, electric capacity C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620421827.4U CN205584598U (en) | 2016-05-11 | 2016-05-11 | Protection circuit that UV lamp strikes is eliminated to intelligence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620421827.4U CN205584598U (en) | 2016-05-11 | 2016-05-11 | Protection circuit that UV lamp strikes is eliminated to intelligence |
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| CN205584598U true CN205584598U (en) | 2016-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105813353A (en) * | 2016-05-11 | 2016-07-27 | 广东好太太智能科技有限公司 | Protection circuit and method for intelligently eliminating impact of UV lamp |
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2016
- 2016-05-11 CN CN201620421827.4U patent/CN205584598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105813353A (en) * | 2016-05-11 | 2016-07-27 | 广东好太太智能科技有限公司 | Protection circuit and method for intelligently eliminating impact of UV lamp |
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| GR01 | Patent grant | ||
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Effective date of registration: 20170303 Address after: Guangzhou City, Guangdong Province Petrochemical Road 511434 Panyu District Hualong Town Gate No. 21 Patentee after: GUANGDONG HOTATA GROUP CO., LTD. Address before: Guangzhou City, Guangdong Province Petrochemical Road 511434 Panyu District Hualong Town Gate No. 21 Patentee before: GUANGDONG HOTATA INTELLIGENT TECHNOLOGY CO., LTD. |