CN214105308U

CN214105308U - Control circuit of UV lamp and UV lamp

Info

Publication number: CN214105308U
Application number: CN202022638516.2U
Authority: CN
Inventors: 马子龙; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-09-03
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a control circuit and UV lamp of UV lamp, this control circuit of UV lamp include that the control circuit of UV lamp includes power supply unit, main control unit, fluorescent tube drive unit and unusual detecting element, and power supply unit is connected with main control unit and fluorescent tube drive unit electricity, and main control unit is connected with fluorescent tube drive unit and unusual detecting element electricity respectively, and at least one UV fluorescent tube is connected to fluorescent tube drive unit electricity, and wherein, power supply unit includes following at least one: the lamp tube driving device comprises a direct current power supply module and a USB power supply module, wherein a power supply unit is at least used for supplying power to a main control unit and a lamp tube driving unit; the abnormality detection unit is used for detecting the abnormal working state of at least one UV lamp tube and transmitting a feedback signal corresponding to the abnormal working state to the main control unit; the main control unit is at least used for controlling the lamp tube driving unit to adjust at least one UV lamp tube to work in a light emitting mode according to the received feedback signal.

Description

Control circuit of UV lamp and UV lamp

Technical Field

The utility model relates to an intelligence furniture technical field especially relates to UV's control circuit and UV lamp.

Background

Under the current social environment developing at a high speed, along with the continuous deep understanding of people on new coronavirus, people pay more and more attention to the environment and health. Researches find that the ultraviolet light source has obvious effect of killing a plurality of harmful virus pathogens, thereby arousing the attention of people to the ultraviolet light source. With the aggravation of the environment, people develop the application of ultraviolet disinfection from industry to household and civil use, more and more people begin to use ultraviolet to eliminate harmful germs in units, families, schools, outgoing and the like, and secondary pollution cannot be generated in the using process.

In the driving circuit of high-low voltage lamp, fluorescent lamp, ultraviolet lamp, etc., it is common to use AC90-260V for power supply, and the power supply circuit belongs to the high voltage circuit, though it has: the power can be controlled, large and medium power ultraviolet products can be manufactured, the ultraviolet sterilization device is suitable for large and medium area sterilization places, the ultraviolet power is large, the radiation area is wide, the sterilization area is large, but the ultraviolet sterilization device has the advantages of high safety requirement, poor safety, high voltage electric shock hazard, inconvenience in carrying and use, requirements on the use place and capability of supplying power for operation and use only by a socket place with AC 90-260V.

Meanwhile, the existing high-low voltage lamp, fluorescent lamp and ultraviolet lamp which adopt the low-voltage USB power supply driving circuit have the advantages of safe use, convenient charging and carrying, capability of being placed in any place and capability of being used in wired and wireless places, but the existing universal portable chargeable ultraviolet lamp has very small power, only 1-5W in common use, very weak ultraviolet intensity and very small applicable space area, and the existing lamp tube which is universal for UV has only a low-power cold cathode lamp tube and has poor sterilization and disinfection effects, and the high-low voltage lamp, the fluorescent lamp and the ultraviolet lamp of the USB power supply driving circuit structure have small sterilization space range because the high-power hot cathode lamp tube cannot be used.

In view of the above problems in the related art, no effective solution exists at present.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the defect that exists among the prior art of design, a control circuit and UV lamp of UV lamp is provided, and it adopts the multi-mode power supply, convenient to carry, and fluorescent tube application scope is wide, and the place of disinfecting is suitable for not the restriction.

According to the first aspect, the utility model provides a control circuit of UV lamp, including power supply unit, main control unit, fluorescent tube drive unit and unusual detecting element, the power supply unit with the main control unit with fluorescent tube drive unit electricity is connected, the main control unit respectively with fluorescent tube drive unit with unusual detecting element electricity is connected, at least one UV fluorescent tube is connected to fluorescent tube drive unit electricity, wherein, the power supply unit includes following at least one: the lamp tube driving device comprises a direct current power supply module and a USB power supply module, wherein the power supply unit is at least used for supplying power to the main control unit and the lamp tube driving unit; the abnormality detection unit is used for detecting the abnormal working state of the at least one UV lamp tube and transmitting a feedback signal corresponding to the abnormal working state to the main control unit; the main control unit is at least used for controlling the lamp tube driving unit to adjust the at least one UV lamp tube to work in a light emitting mode according to the received feedback signal.

As a further elaboration of the above technical solution:

in the above technical solution, the dc power supply module includes a first dc power supply port and a first high voltage power supply port, and the dc power supply module further includes a first diode and a second diode connected in series, an anode of the first diode is electrically connected to a first power supply terminal electrically connected to an external dc power supply, a cathode of the first diode is electrically connected to an anode of the second diode and the first high voltage power supply port, respectively, a cathode of the second diode is electrically connected to the first dc power supply port, and the first dc power supply port and the first high voltage port are electrically connected to the main control unit and the lamp tube driving unit, respectively, wherein the first diode is configured to convert a dc power supply provided by the external dc power supply into a first voltage and supply power to the lamp tube driving unit; the second diode is used for converting the first voltage into a second voltage and supplying power to the main control unit.

In the above technical solution, the USB power supply module includes a first charging port, a charging module, and a voltage boosting module that are electrically connected in sequence; the input end of the charging module is electrically connected with the first charging port, and the output end of the charging module is electrically connected with a rechargeable battery; the input end of the boosting module is electrically connected with the rechargeable battery, the anode of the rechargeable battery is electrically connected with the main control unit, and the output end of the boosting module is at least electrically connected with the lamp tube driving unit; the first charging port is used for being externally connected with a direct current power supply; the charging module is used for charging the rechargeable battery according to the voltage provided by the direct-current power supply; the rechargeable battery is used for outputting a third voltage and supplying power to the main control unit; the boosting module is used for converting the third voltage into a first voltage and at least supplying power to the lamp tube driving unit.

In the above technical solution, the charging module includes a charging chip, an input end of the charging chip is electrically connected to the first charging port, an output end of the charging chip is electrically connected to the rechargeable battery through a first inductor and a first resistor connected in series, wherein the charging chip is configured to charge the rechargeable battery according to a voltage of the dc power supply accessed by the first charging port.

In the above technical solution, the boost module includes a boost chip, an input end of the boost chip is electrically connected to the rechargeable battery, an output end of the boost chip is electrically connected to an anode and a second inductor of a third diode, the second inductor is also electrically connected to an output end of the boost chip, a cathode of the third diode is electrically connected to a second high-voltage power supply port of the boost module, the second high-voltage power supply port is at least electrically connected to the lamp tube driving unit, an electrical connection point of the third diode and the second high-voltage power supply port is further connected to a feedback port of the boost chip through a feedback sampling circuit composed of a second resistor and a third resistor, an enable port of the boost chip is electrically connected to a first I/O port of the main control unit, wherein the feedback sampling circuit is configured to collect a first voltage output by the boost module, generating a sampling signal corresponding to the first voltage; the boost chip is used for boosting the third voltage to the first voltage and adjusting the output voltage value of the first voltage according to the sampling signal.

In the above technical solution, the abnormality detection unit includes an optical coupler, the optical coupler includes a first port, a second port, a third port and a fourth port, the first port is electrically connected to the feedback detection port of the main control unit through a series connection fourth resistor, the second port is grounded, the third port and the fourth port are electrically connected to the at least one UV lamp tube through a series connection fifth resistor and a series connection sixth resistor, respectively, wherein the optical coupler is configured to generate the feedback signal and transmit the feedback signal to the main control unit through the first port when the third port and the fourth port detect an abnormal working state of the at least one UV lamp tube.

In the above technical solution, the main control unit includes a microcontroller and a switch unit, the switch unit includes a first switch tube, the first switch tube includes a first control end, a first input end and a first output end, the first control end is electrically connected to the microcontroller through a first sampling circuit composed of a seventh resistor and an eighth resistor, the first input end is electrically connected to the lamp tube driving unit, the first output end is grounded, wherein the microcontroller is configured to output a corresponding switch signal when receiving the feedback signal corresponding to the abnormal operating state; the first switch tube is used for controlling the first input end and the first output end to be connected or disconnected when receiving the switch signal, and controlling the lamp tube driving unit to start and stop.

In the above technical solution, the input voltage detection module includes a fourth resistor and a fifth resistor connected in series, one end of the fourth resistor is connected to the first charging port, an electrical connection point of the fourth resistor and the fifth resistor is connected to an eighth control I/O port of the main control unit, and the other end of the fifth resistor is grounded; the main control unit can detect the voltage of the direct current power supply source accessed to the first charging port correspondingly by measuring the voltage at the electric connection point of the fourth resistor and the fifth resistor.

In the above technical solution, the microcontroller includes one of the following singlechips: CMS89F5523, MICROCHIP PIC16F18XXX, ST STM8AFXXX, SILICON C8051FXXX, HOLTEK HT46 RXX/HT 66FXXX, EMC EM78FXXX, SONIX SN8PXXX, BEILING BL21P01, EASTSOFT ES7PXXX, CMSEMICON CMS89 FXXX.

In the above technical solution, the lamp driving unit includes an inverter, the inverter includes a first primary winding, a second primary winding, a third primary winding, and a secondary winding, the first primary winding is electrically connected to the second primary winding, and an electrical connection point of the first primary winding and the second primary winding is electrically connected to the power supply unit through a third inductor connected in series; the other end of the first primary winding, the second input end of the second switching tube and the eighth resistor are connected, the other end of the eighth resistor is connected to the second control end of the second switching tube, and the output end of the second switching tube is electrically connected to the main control unit; the other end of the second primary winding is electrically connected with a third input end of a third switching tube, a third output end of the third switching tube is electrically connected to the main control unit, and two ends of the third primary winding are respectively electrically connected to a second control end of the second switching tube and a third control end of the third switching tube; the secondary winding is electrically connected with the at least one UV lamp tube.

In a second aspect, the present invention adopts another technical solution as follows: a UV lamp comprising a control circuit for a UV lamp as described in the first aspect.

Compared with the prior art, the control circuit and the UV lamp of this application embodiment, wherein, the control circuit of UV lamp includes power supply unit, main control unit, fluorescent tube drive unit and unusual detecting element, and power supply unit is connected with main control unit and fluorescent tube drive unit electricity, and main control unit is connected with fluorescent tube drive unit and unusual detecting element electricity respectively, and at least one UV fluorescent tube is connected to fluorescent tube drive unit electricity, and wherein, power supply unit includes following at least one: the lamp tube driving device comprises a direct current power supply module and a USB power supply module, wherein a power supply unit is at least used for supplying power to a main control unit and a lamp tube driving unit; the abnormality detection unit is used for detecting the abnormal working state of at least one UV lamp tube and transmitting a feedback signal corresponding to the abnormal working state to the main control unit; the main control unit is at least used for controlling the lamp tube driving unit to adjust at least one UV lamp tube to work in a light emitting mode according to the received feedback signal. The control circuit of UV lamp of this application embodiment can drive cold cathode, hot cathode, the luminous lamps and lanterns of well low-voltage start, and the power supply of adaptation USB-5V, the lithium cell is deposited the electricity and is supplied power to external power source adapter multimode, can be big, in, small-size space and do not have the place of power and use, convenient to carry removes the use, the control circuit of UV lamp and UV lamp of this application fuse all advantages of high low-voltage circuit, solve the not good problem of drive effect of high pressure and low pressure driver among the correlation technique.

Drawings

Fig. 1 is a schematic circuit diagram of a control circuit of a germicidal lamp according to an embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Fig. 1 is a schematic circuit diagram of a control circuit of a UV lamp according to an embodiment of the present application. The control circuit of the UV lamp shown in the figure can drive a cold cathode, a hot cathode and a lamp which is started to emit light at medium and low voltages, is adaptive to USB-5V power supply, lithium battery power storage and external power supply adapter power supply in various modes, can be used in large, medium and small spaces and places without power supplies, is convenient to carry and move for use, integrates all advantages of high and low voltage circuits, and solves the problem of poor driving effect of high and low voltage drivers in the related technology.

Referring to fig. 1, the control circuit of the UV lamp of this embodiment includes a power supply unit 100, a main control unit 200, a lamp driving unit 300, and an abnormality detection unit 400, where the power supply unit 100 is electrically connected to the main control unit 100 and the lamp driving unit 300, the main control unit 200 is electrically connected to the lamp driving unit 300 and the abnormality detection unit 400, respectively, and the lamp driving unit 300 is electrically connected to at least one UV lamp (in this embodiment, the UV lamp includes a cold cathode UV2, a hot cathode UV1, and a lamp that starts to emit light at medium and low voltages). Wherein,

the power supply unit 100 includes at least one of: the lamp driving system comprises a direct current power supply module 101, a USB power supply module 102, and a power supply unit 100 at least used for supplying power to a main control unit 200 and a lamp driving unit 300.

The abnormal detection unit 400 is configured to detect an abnormal operating state of at least one UV lamp and transmit a feedback signal corresponding to the abnormal operating state to the main control unit 200.

The main control unit 200 is at least used for controlling the lamp driving unit 300 to adjust at least one UV lamp to emit light according to the received feedback signal.

It is understood that, in some embodiments, the dc power supply module 101 includes a first dc power supply port (corresponding to HV1 in fig. 1) and a first high voltage power supply port (corresponding to HV in fig. 1), the dc power supply module 101 further includes a first diode D13 and a second diode D14 connected in series, an anode of the first diode D13 is electrically connected to a first power supply terminal CN1 electrically connected to an external dc power source, a cathode of the first diode D13 is electrically connected to an anode of the second diode D14 and the first high voltage power supply port (corresponding to HV in fig. 1), a cathode of the second diode D14 is electrically connected to the first dc power supply port (corresponding to HV1 in fig. 1), the first dc power supply port and the first high voltage port are electrically connected to the main control unit 100 and the lamp driving unit 300, respectively, wherein the first diode D13 is used for converting the external dc power supplied by the external dc power source into a first voltage, and supplies power (high voltage power) to the lamp driving unit 300; the second diode D14 is used to convert the first voltage into a second voltage and supply power to the main control unit 200 (dc low voltage supply).

It should be noted that, in this embodiment, the dc power supply module 101 is composed of an external dc power supply, a first power supply terminal CN1, a first diode D13 and a second diode D14, and when the UV lamp is not used or does not have USB power supply, the external dc power supply provides power for the high voltage (corresponding to the voltage at HV in fig. 1) of the lamp driving unit 300, and meanwhile, the dc input can be used to provide power for the low voltage (corresponding to the voltage at HV1 in fig. 1) of the main control unit 200 after passing through the first diode D13 and the second diode D14.

It is understood that in some embodiments, the USB power supply module 102 includes a first charging port CN2, a charging module 103, and a voltage boosting module 104, which are electrically connected in sequence; the input end of the charging module 103 is electrically connected with the first charging port CN2, and the output end of the charging module 103 is electrically connected with the rechargeable battery BT 1; the input end of the boost module 104 is electrically connected to the rechargeable battery BT1, the positive electrode of the rechargeable battery BT1 is electrically connected to the main control unit 200, and the output end of the boost module 104 is electrically connected to at least the lamp driving unit 300. Wherein,

the first charging port CN2 is used for externally connecting a dc power supply; the charging module 103 is used for charging the rechargeable battery BT1 according to the voltage provided by the direct-current power supply; the rechargeable battery BT1 is used for outputting a third voltage and supplying power to the main control unit 200; the boost module 104 is configured to convert the third voltage into the first voltage and at least supply power to the lamp driving unit 300.

In this embodiment, the charging module 103 includes a charging chip U4, an input terminal of the charging chip U4 is electrically connected to the first charging port CN2, and an output terminal of the charging chip U4 is electrically connected to the rechargeable battery BT1 through a first inductor L2 and a first resistor R9 connected in series, where the charging chip U4 is configured to charge the rechargeable battery BT1 according to a voltage of a dc power supply connected to the first charging port CN 2.

In the present embodiment, the charging chip U4 includes, but is not limited to, one of the following charging chips: ME4074TI BQ24XXX, MPS MP26XX, southchip SC89XX, TOP POWER TP50XX/TP40 XX.

In the present embodiment, the boost module 104 includes a boost chip U2, the input terminal of the boost chip U2 is electrically connected to the rechargeable battery BT1, the output terminal of the boost chip U2 is electrically connected to the anode of the third diode D8 and the second inductor L3, respectively, the second inductor L3 is also electrically connected to the output terminal of the boost chip U2, the cathode of the third diode D8 is electrically connected to the second high voltage power supply port (corresponding to HV in fig. 1) of the boost module 104, the second high voltage power supply port is electrically connected to at least the lamp driving unit 300, the electrical connection point of the third diode D8 and the second high voltage power supply port is also connected to the feedback port (corresponding to the port numbered 2 of the boost chip U2) of the boost chip U2 through a feedback sampling circuit composed of the second resistor R10 and a third resistor R11, the enable port (corresponding to the port numbered 8 of the boost chip U2) of the boost chip U2 is electrically connected to the first I/O port of the main control unit 200 (refer to EN in fig. 1), the feedback sampling circuit is used for acquiring a first voltage output by the boost module 104 and generating a sampling signal corresponding to the first voltage; the boost chip 104 is configured to boost the third voltage to the first voltage, and adjust a voltage value of the output first voltage according to the sampling signal.

In the present embodiment, the boost chip U2 includes but is not limited to one of the following boost chips: TI LM3478/81 TPS61XXX, MPS MP55XX, southchip SC8201, TOP POWER TP 8305B.

It should be noted that, in this embodiment, the USB power supply module 102 is composed of two parts, which specifically include: the first part is that the first charging port CN2 and the fourth diode D12 together form a USB direct power supply part, and the power is directly supplied to the boosting module 104 through the USB; a second part: the USB power supply module 102 is composed of a first charging port CN2, a resistor R8, a capacitor C7, a fifth diode D5, a sixth diode D6, a charging chip U4, a first inductor L2, a first resistor R9, a seventh diode D7, a capacitor C4, a capacitor C5, and a rechargeable battery BT1, so that the boost module 104 can be supplied with the electric energy stored in the rechargeable battery BT1 when no external power supply is input.

The boost module 104 is composed of a capacitor C11, a capacitor C12, a boost chip U2, a second inductor L3, a third diode D8, a second resistor R10, a third resistor R11, a capacitor C8, and a capacitor C9, and the boost module 104 is configured to boost a 2.8-4.2V power supply of the rechargeable battery BT1 or a 5V power supply input by the first charging port CN2, and then supply a corresponding voltage to the lamp driving unit 300 by sending a high voltage to a corresponding power supply port (refer to HV in fig. 1) of the lamp driving unit 300.

It should be noted that, in this embodiment, the output terminal of the voltage boost module 104 is further electrically connected to the first high voltage power supply port (refer to HV in fig. 1) of the dc power supply module 101, and the voltage boost module 104 boosts the 2.8-4.2V power supply of the rechargeable battery BT1 or the 5V power supply input by the first charging port CN2 to a first voltage, and then, stabilizes the voltage to a second voltage through the second diode D14 and provides a corresponding voltage for the main control unit 200.

It is understood that, in some embodiments, the abnormality detection unit 400 includes an optical coupler U3, the optical coupler U3 includes a first port, a second port, a third port and a fourth port, the first port is electrically connected to the feedback detection port of the main control unit 200 (connected by the network symbol FB in fig. 1) by serially connecting a fourth resistor R13, the second port is grounded, and the third port and the fourth port are electrically connected to at least one UV lamp tube by serially connecting a fifth resistor R4 and a sixth resistor R1, respectively, wherein the optical coupler U3 is configured to generate a feedback signal and transmit the feedback signal to the main control unit 200 through the first port when the third port and the fourth port detect an abnormal operation state of the at least one UV lamp tube.

It should be noted that the abnormality detection unit 400 is composed of a fifth resistor R4, a sixth resistor R1, an eighth diode D11, an optocoupler U3, a capacitor C2, and a fourth resistor R13, and a circuit of the abnormality detection unit 400 is used for processing a bad signal through the abnormality detection unit 400 to the FB terminal of the microcontroller U1 of the main control unit 200 when a filament of the UV1 hot cathode fluorescent lamp is fused or damaged, and the 7 th pin of the microcontroller U1 of the main control unit 200 outputs a command, and transmits the command to the first switch tube Q2 after being divided by the seventh resistor R3 and the eighth resistor R6, and controls the operating state of the abnormality detection unit 400 by controlling the conduction of the first switch tube Q2.

In this embodiment, the abnormality detection unit 400 may react the operating condition of the UV lamp to the main control unit 200 through an internal circuit, and the main control unit 200 processes the switching signal in response to the feedback signal and then directly controls the operating condition of the lamp driving unit 300, thereby controlling the operating condition of the UV lamp. In this embodiment, the main control unit 200 is used for processing the signal of the abnormality detection unit 400, and for processing the set signal command to control the operation status of the lamp and other circuits.

It can be understood that, in some embodiments, the main control unit 200 includes a microcontroller U1 and a switch unit 201, the switch unit 201 includes a first switch tube Q2, the first switch tube Q2 includes a first control terminal, a first input terminal and a first output terminal, the first control terminal is electrically connected to the microcontroller U1 through a first sampling circuit composed of a seventh resistor R3 and an eighth resistor R6, the first input terminal is electrically connected to the lamp driving unit 300, and the first output terminal is connected to ground, wherein the microcontroller U1 is configured to output a corresponding switch signal when receiving a feedback signal corresponding to an abnormal operating state; the first switch tube Q2 is used for controlling the first input end to be connected or disconnected with the first output end when receiving the switch signal, and controlling the lamp driving unit 300 to start or stop.

In this embodiment, the microcontroller U1 includes but is not limited to CMS89F5523 single chip, and the microcontroller U1 may also be other microcontrollers, for example: FPGA and DSP can be selected. In some optional embodiments, the microcontroller U1 includes one of the following singlechips: CMS89F5523, MICROCHIP PIC16F18XXX, ST STM8AFXXX, SILICON C8051FXXX, HOLTEK HT46 RXX/HT 66FXXX, EMC EM78FXXX, SONIX SN8PXXX, BEILING BL21P01, EASTSOFT ES7PXXX, CMSEMICON CMS89 FXXX.

It should be noted that, in this embodiment, the microcontroller U1 outputs a PWM signal with a set duty ratio, and controls the first input terminal and the first output terminal of the first switch Q2 to be correspondingly turned on and off through the PWM signal, and when the first input terminal and the first output terminal are connected, the first input terminal is connected to the bottom, at this time, the lamp driving unit 300 is correspondingly turned on, and when the first input terminal and the second output terminal are disconnected, that is, the first output terminal is pulled high, at this time, the lamp driving unit 300 is temporarily stopped.

In this embodiment, the main control unit 200 is used to control the operation state of the UV lamp, and comprises: the power supply of the main control unit 200 mainly comprises a resistor R12, a bidirectional diode D13, a capacitor C1, a microcontroller U1, a capacitor R2, a key S1, a light emitting diode D4, a resistor R5, a seventh resistor R3, an eighth resistor R6, a first switch tube Q2 and a ninth diode D2, and the power supply of the main control unit 200 is mainly provided by the BT1 of the USB power supply module 102 or the HV1 of the dc power supply module.

It is understood that in some embodiments, the lamp driving unit 300 includes an inverter T1, the inverter T1 includes a first primary winding, a second primary winding, a third primary winding and a secondary winding, the first primary winding is electrically connected to the second primary winding, and an electrical connection point of the first primary winding and the second primary winding is electrically connected to the power supply unit 100 (corresponding to HV in fig. 1) through a series connection third inductor L5; the other end of the first primary winding, the second input end of the second switching tube and the eighth resistor R7, the other end of the eighth resistor R7 is connected to the second control end of the second switching tube Q3, and the output end of the second switching tube Q3 is electrically connected to the main control unit 200; the other end of the second primary winding is electrically connected with a third input end of a third switching tube Q1, a third output end of the third switching tube Q1 is electrically connected to the main control unit 200, and two ends of the third primary winding are respectively electrically connected to a second control end of the second switching tube Q3 and a third control end of the third switching tube Q1; the secondary winding is electrically connected with at least one UV lamp tube.

In the present embodiment, the lamp driving unit 300 generates a voltage, current and frequency signal suitable for the lamps such as high-low voltage lamp, fluorescent lamp and ultraviolet lamp by the voltage conversion of the inverter T1 in cooperation with the third inductor L5, the second switch tube Q3 and the third switch tube Q1, so as to light the "lamp".

In the present embodiment, the lamp driving unit 300 is composed of a third switch Q1, a second switch Q3, a twelfth diode D1, an eleventh diode D3, an eighth resistor R7, a capacitor C3, a third inductor L5, an inverter T1, a capacitor C6, a lamp UV1, a lamp UV2, a capacitor C10, and a thermistor PTC1, and the lamp driving unit 300 is powered by a power supply oscillating to generate a high frequency and high voltage to supply the lamp UV1 or the lamp UV2 with a proper starting power, wherein the capacitor C10 and the thermistor PTC1 are used for supplying a proper starting power to the lamp UV 1.

It can be understood that, in some embodiments, the first switching tube Q2, the second switching tube Q3 and the third switching tube Q1 include one of the following: MOS tube and triode. In this embodiment, the first switching transistor Q2 is preferably a MOS transistor, and the second switching transistor Q3 and the third switching transistor Q1 are preferably a triode.

In the present embodiment, the first to eleventh diodes include, but are not limited to, 1N series diodes, such as: and 1N4001 and 1N4148 can be selected.

The application also provides an embodiment, the UV lamp comprises the control circuit of the UV lamp.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make modifications or changes equivalent to the above disclosed technical content without departing from the technical scope of the present invention.

Claims

1. The utility model provides a control circuit of UV lamp, its characterized in that includes power supply unit, main control unit, fluorescent tube drive unit and unusual detecting element, power supply unit with the main control unit with fluorescent tube drive unit electricity is connected, the main control unit respectively with fluorescent tube drive unit with unusual detecting element electricity is connected, at least one UV fluorescent tube is connected to fluorescent tube drive unit electricity, wherein, power supply unit includes following at least one: the lamp tube driving device comprises a direct current power supply module and a USB power supply module, wherein the power supply unit is at least used for supplying power to the main control unit and the lamp tube driving unit; the abnormality detection unit is used for detecting the abnormal working state of the at least one UV lamp tube and transmitting a feedback signal corresponding to the abnormal working state to the main control unit; the main control unit is at least used for controlling the lamp tube driving unit to adjust the at least one UV lamp tube to work in a light emitting mode according to the received feedback signal.

2. The control circuit of a UV lamp of claim 1, wherein said DC power supply module comprises a first DC power supply port and a first high voltage power supply port, the direct current power supply module also comprises a first diode and a second diode which are connected in series, the anode of the first diode is electrically connected with a first power supply terminal which is electrically connected with an external direct current power supply, the cathode of the first diode is respectively and electrically connected with the anode of the second diode and the first high-voltage power supply port, the cathode of the second diode is electrically connected with the first direct current power supply port, the first direct current power supply port and the first high voltage port are respectively and electrically connected with the main control unit and the lamp tube driving unit, the first diode is used for converting a direct current power supply provided by an external direct current power supply into a first voltage and supplying power to the lamp tube driving unit; the second diode is used for converting the first voltage into a second voltage and supplying power to the main control unit.

3. The control circuit of the UV lamp of claim 1, wherein the USB power supply module comprises a first charging port, a charging module and a boosting module which are electrically connected in sequence; the input end of the charging module is electrically connected with the first charging port, and the output end of the charging module is electrically connected with a rechargeable battery; the input end of the boosting module is electrically connected with the rechargeable battery, the anode of the rechargeable battery is electrically connected with the main control unit, and the output end of the boosting module is at least electrically connected with the lamp tube driving unit; the first charging port is used for being externally connected with a direct current power supply;

the charging module is used for charging the rechargeable battery according to the voltage provided by the direct-current power supply;

the rechargeable battery is used for outputting a third voltage and supplying power to the main control unit;

the boosting module is used for converting the third voltage into a first voltage and at least supplying power to the lamp tube driving unit.

4. The control circuit of claim 3, wherein the charging module comprises a charging chip, an input terminal of the charging chip is electrically connected to the first charging port, and an output terminal of the charging chip is electrically connected to the rechargeable battery through a first inductor and a first resistor connected in series, wherein the charging chip is configured to charge the rechargeable battery according to the voltage of the DC power supply connected to the first charging port.

5. The UV lamp control circuit according to claim 3, wherein the boost module comprises a boost chip, an input terminal of the boost chip is electrically connected to the rechargeable battery, an output terminal of the boost chip is electrically connected to an anode and a second inductor of a third diode, respectively, the second inductor is further electrically connected to an output terminal of the boost chip, a cathode of the third diode is electrically connected to a second high voltage power supply port of the boost module, the second high voltage power supply port is electrically connected to at least the lamp driving unit, an electrical connection point of the third diode and the second high voltage power supply port is further connected to a feedback port of the boost chip through a feedback sampling circuit composed of a second resistor and a third resistor, an enable port of the boost chip is electrically connected to the first I/O port of the main control unit, the feedback sampling circuit is used for acquiring a first voltage output by the boosting module and generating a sampling signal corresponding to the first voltage; the boost chip is used for boosting the third voltage to the first voltage and adjusting the output voltage value of the first voltage according to the sampling signal.

6. The control circuit of claim 1, wherein the abnormality detection unit comprises an optocoupler, the optocoupler comprises a first port, a second port, a third port and a fourth port, the first port is electrically connected to the feedback detection port of the main control unit by serially connecting a fourth resistor, the second port is grounded, and the third port and the fourth port are electrically connected to the at least one UV lamp tube by serially connecting a fifth resistor and a sixth resistor, respectively, wherein the optocoupler is configured to generate the feedback signal and transmit the feedback signal to the main control unit through the first port when the third port and the fourth port detect an abnormal operating state of the at least one UV lamp tube.

7. The control circuit of the UV lamp according to claim 1, wherein the main control unit comprises a microcontroller and a switch unit, the switch unit comprises a first switch tube, the first switch tube comprises a first control terminal, a first input terminal and a first output terminal, the first control terminal is electrically connected to the microcontroller through a first sampling circuit composed of a seventh resistor and an eighth resistor, the first input terminal is electrically connected to the lamp tube driving unit, the first output terminal is connected to ground, wherein the microcontroller is configured to output a corresponding switch signal when receiving the feedback signal corresponding to the abnormal operation state; the first switch tube is used for controlling the first input end and the first output end to be connected or disconnected when receiving the switch signal, and controlling the lamp tube driving unit to start and stop.

8. The UV lamp control circuit of claim 7, wherein the microcontroller comprises one of the following singlechips: CMS89F5523, MICROCHIP PIC16F18XXX, ST STM8AFXXX, SILICON C8051FXXX, HOLTEK HT46 RXX/HT 66FXXX, EMC EM78FXXX, SONIX SN8PXXX, BEILING BL21P01, EASTSOFT ES7PXXX, CMSEMICON CMS89 FXXX.

9. The UV lamp control circuit of claim 1, wherein the lamp driving unit comprises an inverter, the inverter comprises a first primary winding, a second primary winding, a third primary winding and a secondary winding, the first primary winding is electrically connected to the second primary winding, and an electrical connection point of the first primary winding and the second primary winding is electrically connected to the power supply unit through a third inductor connected in series; the other end of the first primary winding, the second input end of the second switching tube and the eighth resistor are connected, the other end of the eighth resistor is connected to the second control end of the second switching tube, and the output end of the second switching tube is electrically connected to the main control unit; the other end of the second primary winding is electrically connected with a third input end of a third switching tube, a third output end of the third switching tube is electrically connected to the main control unit, and two ends of the third primary winding are respectively electrically connected to a second control end of the second switching tube and a third control end of the third switching tube; the secondary winding is electrically connected with the at least one UV lamp tube.

10. A UV lamp, characterized by comprising a control circuit of a UV lamp as claimed in any one of claims 1 to 9.