CN212649751U

CN212649751U - Control circuit of bactericidal lamp and bactericidal lamp

Info

Publication number: CN212649751U
Application number: CN202021829585.5U
Authority: CN
Inventors: 袁昆; 张恒; 于关永; 黎定; 刘真广
Original assignee: Zhongshan Huixian Intelligent Control Technology Co ltd
Current assignee: Zhongshan Huixian Intelligent Control Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-03-02
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a control circuit of a bactericidal lamp and the bactericidal lamp, the control circuit of the bactericidal lamp comprises a control module, a power supply unit, a switch unit, a photosensitive switch unit and a light-emitting driving unit, the power supply unit is electrically connected with the control module, the switch unit, the photosensitive switch unit and the light-emitting driving unit, the control module is electrically connected with the switch unit, the photosensitive switch unit and the light-emitting driving unit respectively, and the light-emitting driving unit is connected with a UV lamp and an LED lamp; the power supply unit is used for supplying power to the control module, the switch unit, the photosensitive switch unit, the light-emitting driving unit, the UV lamp and the LED lamp; the photosensitive switch unit is used for detecting the light brightness; the switching unit is used for generating a switching signal; the control module is used for starting and stopping the bactericidal lamp, switching on and off the photosensitive switch unit and controlling the light-emitting driving unit to drive the UV lamp to emit light according to the received switching signal, and the control module is also used for controlling the light-emitting driving unit to drive the UV lamp to emit light according to the light brightness detected by the photosensitive switch unit.

Description

Control circuit of bactericidal lamp and bactericidal lamp

Technical Field

The utility model relates to an intelligence furniture technical field especially relates to the control circuit and the bactericidal lamp of bactericidal lamp.

Background

People pay more and more attention to the environment and health, and more people select the ultraviolet germicidal lamp to sterilize public places and families.

However, the existing ultraviolet germicidal lamp consumes much energy and adopts a manual switch to control the power supply, so that the damage to the health of a human body can be caused in the process of manually operating the germicidal lamp; meanwhile, the ultraviolet germicidal lamp and the illuminating lamp can not be integrated together and are arranged separately, so that the installation is troublesome, and the sterilization and the illumination at each time need to be operated respectively, and the energy consumption, danger, time consumption and labor consumption are high.

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, provide a control circuit and bactericidal lamp of bactericidal lamp, it adopts the rechargeable battery power supply, and convenient to carry adopts photosensitive switch and on & off switch control to disinfect, and operating performance is good.

The control circuit of a bactericidal lamp comprises a control module, a power supply unit, a switch unit, a photosensitive switch unit and a light-emitting driving unit, wherein the power supply unit is electrically connected with the control module, the switch unit, the photosensitive switch unit and the light-emitting driving unit; the power supply unit is used for supplying power to the control module, the switch unit, the photosensitive switch unit, the light-emitting driving unit, the UV lamp and the LED lamp; the photosensitive switch unit is used for detecting the light brightness; the switch unit is used for generating a switch signal; the control module is used for starting and stopping the bactericidal lamp, switching on and off the photosensitive switch unit and controlling the light-emitting driving unit to drive the UV lamp to emit light according to the received switch signal, and the control module is also used for controlling the light-emitting driving unit to drive the UV lamp to emit light according to the light brightness detected by the photosensitive switch unit.

As a further elaboration of the above technical solution:

in the above technical solution, the photosensitive switch unit includes a first light pipe, a first switch pipe, a first resistor, a second resistor and a first capacitor, the first switch tube comprises a first input end, a first control end and a first output end, the input end of the first light guide tube is connected to the positive pole of the rechargeable battery of the power supply unit, an output end of the first light pipe is connected to the first control end and the first resistor, and the other end of the first output end and the first resistor is connected to a first control I/O port of the control module, the first input end is connected to the anode of the rechargeable battery through the second resistor in series, the first input end is also connected to a second control I/O port of the control module, and the first capacitor is electrically connected with the first input end and the first output end; the first light pipe generates a driving signal for driving the first switch tube to be switched on or switched off by detecting the brightness of light, and the first switch tube is driven by the driving signal to be switched on or switched off and generates a control signal for controlling the light-emitting driving unit to drive the UV lamp to emit light.

In the above technical solution, the first optical conduit includes a photodiode, and/or the first switching tube includes one of the following: MOS tube and triode.

In the above technical solution, the power supply unit includes an input voltage detection module, a charging module and a boosting module, an input end of the input voltage detection module is electrically connected to the first charging port, and an output end of the input voltage detection module is electrically connected to the control module; 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, and the output end of the boosting module is electrically connected with the UV lamp and the LED lamp; the first charging port is used for being externally connected with a direct current power supply; the input voltage detection module is used for detecting the voltage of the direct current power supply source accessed by the first charging port; 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 first voltage and supplying power to the control module, the switch unit, the light-emitting driving unit and the photosensitive switch unit; the voltage boosting module is used for converting the first voltage into a second voltage for the UV lamp and the LED lamp to emit light.

In the above technical solution, the boost module includes a first inductor, a second switch tube, a first voltage regulator tube and a first sampling circuit, one end of the first inductor is connected with the anode of the rechargeable battery, the other end of the first inductor is connected with the input end of the second switch tube and the first voltage-regulator tube, the control end of the second switch tube is connected to a fourth control I/O port of the control module, the output end of the second switch tube is grounded, the other end of the first voltage-stabilizing tube is connected to the output end of the boosting module and the input end of the first sampling circuit, the output terminal of the first sampling circuit is connected to a fifth control I/O port of the control module, the first sampling circuit is used for collecting a second voltage output by the boosting module and generating a sampling signal corresponding to the second voltage; the control module can output a corresponding PWM control signal to the control end of the second switching tube according to the sampling signal and control the second switching tube to be switched on or switched off, so that the first inductor boosts the first voltage output by the rechargeable battery; the first voltage-regulator tube is used for regulating the voltage boosted by the first inductor into the second voltage.

In the above technical solution, the charging module includes an ME4074 charging chip, an input end of the ME4074 charging chip is connected to the first charging port by serially connecting a third resistor, an input end of the ME4074 charging chip is further connected to a sixth control I/O port of the control module, an output end of the ME4074 charging chip is electrically connected to the rechargeable battery, an output end of the ME4074 charging chip is further electrically connected to a second sampling circuit composed of a fourth resistor and a fifth resistor, one end of the fourth resistor is connected to an output end of the ME4074 charging chip, an electrical connection point of the fourth resistor and the fifth resistor is connected to a seventh control I/O port of the control module, wherein,

the ME4074 charging chip is used for charging the rechargeable battery according to the voltage of the direct-current power supply accessed by the first charging port; the second sampling circuit is used for detecting the voltage of the rechargeable battery; the control module can detect the voltage input to the ME4074 charging chip.

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 control module, and the other end of the fifth resistor is grounded; the control module can detect the voltage of the direct current power supply accessed by the first charging port by measuring the voltage at the electric connection point of the fourth resistor and the fifth resistor.

In the above technical solution, the switch unit includes a first key, a sixth resistor, a seventh resistor, and a second capacitor, one end of the first key is connected to the sixth resistor and the seventh resistor, the other end of the first key is connected to ground, the other end of the sixth resistor is connected to the positive electrode of the rechargeable battery of the power supply unit, the other end of the seventh resistor is connected to the second capacitor and the ninth control I/O port of the control module, and the other end of the second capacitor is connected to ground

In the above technical solution, the light emitting driving unit includes an ULN2001 chip, and/or the control module includes a CMS89F5523 single chip microcomputer.

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

Compared with the prior art, the beneficial effects of the utility model reside in that: the control circuit of the sterilizing lamp and the sterilizing lamp adopt the switch unit and the photosensitive switch unit to cooperate with the control module to control the UV lamp, and the control effect is good; the rechargeable battery is matched with the boosting module, the voltage of the rechargeable battery is correspondingly converted into the voltage for the UV lamp to emit light, and the portable requirement of the germicidal lamp is met while the power supply requirement is met; moreover, the UV lamp and the LED lamp are driven to emit light through the control module and the Darlington transistor driving chip so as to sterilize and/or illuminate, and the load driving capability is improved.

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 germicidal lamp according to an embodiment of the present disclosure. The control circuit of the illustrated germicidal lamp adopts the switch unit and the photosensitive switch unit to cooperate with the control module to control the UV lamp, so that the control effect is good; the rechargeable battery is matched with the boosting module, the voltage of the rechargeable battery is correspondingly converted into the voltage for the UV lamp to emit light, and the portable requirement of the germicidal lamp is met while the power supply requirement is met; moreover, the UV lamp and the LED lamp are driven to emit light through the control module and the Darlington transistor driving chip so as to sterilize and/or illuminate, and the load driving capability is improved.

Referring to fig. 1, the control circuit of the germicidal lamp in this embodiment includes a control module 100, a power supply unit 200, a switch unit 300, a photosensitive switch unit 400 and a light-emitting driving unit 500, wherein the power supply unit 200 is electrically connected to the control module 100, the switch unit 300, the photosensitive switch unit 400 and the light-emitting driving unit 500, the control module 100 is electrically connected to the switch unit 300, the photosensitive switch unit 400 and the light-emitting driving unit 500, respectively, and the light-emitting driving unit 500 is connected to a UV lamp (refer to

LEDs

4 and 3 in the drawing) and an LED lamp (refer to LEDs 2 in the drawing); wherein,

the control module 100 includes but is not limited to a CMS89F5523 single chip, and the control module 100 may also be other microcontrollers, for example: FPGA and DSP can be selected; the light emitting driving unit 500 includes a darlington transistor driving chip U2, the darlington transistor driving chip U2 includes, but is not limited to, an ULN2001 chip; two inputs of the ULN2001 chip are respectively connected to control I/O ports (refer to ports corresponding to network labels UV and ZG in the drawing) corresponding to the control module 100, and two outputs of the ULN2001 chip are respectively connected to one UV lamp and one LED lamp.

The power supply unit 200 is used for supplying power to the control module 100, the switch unit 300, the photosensitive switch unit 400, the light emitting driving unit 500, the UV lamp and the LED lamp; in this embodiment, the power supply 200 provides +3.7V for the control module 100, the switch unit 300, the photosensitive switch unit 400, and the light emitting driving unit 500, and the power supply 200 provides +8V for the UV lamp and the LED lamp.

The light sensitive switch unit 400 is used for detecting light brightness, in this embodiment, the light sensitive switch unit 400 detects the light brightness and transmits the light brightness to the control module 100, and the control module 100 correspondingly outputs a control signal to control the light-emitting driving unit 500 to drive the UV lamp to emit light according to the detected light brightness, that is, to start sterilization; in the present embodiment, the sterilization function is activated when the photosensitive switch unit 400 detects the brightness of the light.

The switching unit 300 is used to generate switching signals, which include a germicidal lamp turn-on/off signal, a UV lamp turn-on signal, and a signal to turn on/off the photosensitive switching unit 400 in the present embodiment.

The control module 100 is configured to start and stop the germicidal lamp according to the received switch signal, switch the photosensitive switch unit 400, and control the light-emitting driving unit 500 to drive the UV lamp to emit light, and the control module 100 is further configured to control the light-emitting driving unit 500 to drive the UV lamp to emit light according to the brightness of the light detected by the photosensitive switch unit 400.

In this embodiment, the light-emitting driving unit 500 is connected to at least one UV lamp, for example, a UVA ultraviolet lamp (refer to the LED4 in the drawing), a UVC ultraviolet lamp (refer to the LED3 in the drawing); in the present embodiment, the LED lamp is a violet LED lamp (refer to LED2 in the drawing) which is used for illumination.

It is understood that in some embodiments, the light-dependent switch unit 400 includes a first light pipe D2, a first switch Q2, a first resistor R4, a second resistor R17 and a first capacitor C1, the first switch Q2 includes a first input terminal, a first control terminal and a first output terminal, the input terminal of the first light pipe D2 is connected to the positive electrode BAT + of the rechargeable battery BT1 of the power supply unit 200, the output terminal of the first light pipe D2 is connected to the first control terminal and the first resistor R4, the other terminals of the first output terminal and the first resistor R4 are connected to a first control I/O port (refer to the network mark GM in the drawing) of the control module, the first input terminal is connected to the positive electrode BAT + of the rechargeable battery BT1 by connecting in series with the second resistor R17, the first input terminal is further connected to a second control I/O port (refer to the network mark GM-Check in the drawing) of the control module 100, the first capacitor C1 is electrically connected with the first input end and the first output end; the first light pipe D2 generates a driving signal for driving the first switch Q2 to turn on or off by detecting the brightness of the light, and the first switch Q2 is driven by the driving signal to turn on or off and generates a control signal for controlling the light-emitting driving unit 500 to drive the UV lamp to emit light.

In some alternative embodiments, the first light pipe D2 includes, but is not limited to, a photodiode, preferably a photodiode PT0603 in this embodiment, and the input end of the first light pipe D2 corresponds to the anode of the photodiode and the output end of the first light pipe D2 corresponds to the cathode of the photodiode.

It is understood that in some embodiments, the first switching tube Q2 includes one of the following: MOS tube and triode. In this embodiment, a triode is preferred, and the first input terminal, the first control terminal and the first output terminal correspond to a collector, a base and an emitter of the triode.

It should be noted that, when the light brightness changes from dark to bright, the first light pipe D2 is gradually turned on, and a high level is generated at the first control end of the first switch Q2, so that the first switch Q2 is turned on, at this time, the control module 100 checks the voltage change between the first input end and the first output end, that is, checks the charging voltage of the first capacitor C1, so as to check the change of the light brightness, and output a corresponding signal for turning on the UV lamp.

It is understood that in some embodiments, the power supply unit 200 includes an input voltage detection module 201, a charging module 202 and a voltage boosting module 203, an input end of the input voltage detection module 201 is electrically connected to the first charging port CN1, and an output end of the input voltage detection module 201 is electrically connected to the control module 100; the input end of the charging module 202 is electrically connected with the first charging port CN1, and the output end of the charging module 202 is electrically connected with the rechargeable battery BT 1; the input end of the boosting module 203 is electrically connected with the rechargeable battery BT1, and the output end of the boosting module 203 is electrically connected with the UV lamp and the LED lamp; the first charging port CN1 is a Type-C charging port and has a charging protection function, and the first charging port CN1 is externally connected with a direct-current power supply; the input voltage detection module 201 is configured to detect a voltage +5V of a dc power supply accessed by the first charging port CN 1; the charging module 202 is used for charging the rechargeable battery BT1 according to the voltage 5V provided by the dc power supply; the rechargeable battery BT1 is used for outputting a first voltage (corresponding to BAT +, having a magnitude of +3.7V) and supplying power to the control module 100, the switching unit 300, the light-emitting driving unit 500 and the photosensitive switching unit 400; the voltage boosting module 203 is used for converting the first voltage into a second voltage +8V for the UV lamp and the LED lamp to emit light.

It can be understood that, in some embodiments, the boost module 203 includes a first inductor L1, a second switch Q1, a first regulator D1, and a first sampling circuit, one end of the first inductor L1 is connected to the positive electrode BAT + of the rechargeable battery BT1, the other end of the first inductor L1 is connected to the input end of the second switch Q1 and the first regulator D1, the control end of the second switch Q1 is connected to the fourth control I/O port (refer to network reference number PWM in the drawing) of the control module 100, the output end of the second switch Q1 is grounded, the other end of the first regulator D1 is connected to the output end (corresponding to 8V) of the boost module 203 and the input end of the first sampling circuit, the output end of the first sampling circuit is connected to the fifth control I/O port (refer to network reference number Out _ voltage _ AD in the drawing) of the control module, wherein the first sampling circuit is configured to collect the second voltage (corresponding to 8V) output by the boost module 203, generating a sampling signal corresponding to the second voltage; the control module 100 can output a corresponding PWM control signal to the control end of the second switch Q1 according to the sampling signal, and control the second switch Q1 to be turned on or off, so that the first inductor L1 boosts the first voltage output by the rechargeable battery BT 1; the first regulator tube D1 is used to regulate the voltage boosted by the first inductor L1 to a second voltage (corresponding to 8V).

In this embodiment, the second switch Q1 includes but is not limited to an N-channel MOS transistor, and the first regulator D1 includes but is not limited to a 1N series of regulators, such as: and 1N4001 and 1N4148 can be selected.

In the boosting process, the control module 100 outputs a PWM signal to turn on or off the second switching tube Q2 according to the duty ratio of the PWM signal, and the second switching tube Q2 is turned on or off cyclically, so that the voltage at the input end of the second switching tube Q2 cyclically changes, and the first inductor L1 generates an induced electromotive force, so that the voltage at the electrical connection point of the first inductor L1 and the first regulator D1 changes: induced electromotive force and BAT + sum, the direct current voltage 8V after being stabilized through the first voltage stabilizing tube D1 is filtered through the filter circuit connected with the output end of the boosting module 203, and therefore the constant direct current circuit 8V is formed.

In this embodiment, the first sampling circuit includes a resistor R12, a resistor R16, and a resistor R14, where the resistor R12 and the resistor R16 constitute a voltage divider circuit, the resistor R14 is a current-limiting resistor, and the voltage at the electrical connection point of the resistor R12 and the resistor R16 is collected to match and detect the output voltage of the boost module 203, and when the first sampling circuit samples a change in the output voltage of the boost module 203, the duty ratio of the PWM signal is adjusted to obtain a constant boost voltage.

It is understood that, in some embodiments, the charging module 202 includes an ME4074 charging chip U1, an input terminal (CHRG) of the ME4074 charging chip U1 is connected to the first charging port (corresponding to 5V) by connecting a third resistor R5 in series, an input terminal of the ME4074 charging chip U1 is further connected to a sixth control I/O port (refer to network reference number charger _ check in the drawing) of the control module, an output terminal (BAT) of the ME4074 charging chip U1 is electrically connected to the charging Battery BT1, an output terminal (BAT) of the ME4074 charging chip U1 is further electrically connected to a second sampling circuit composed of a fourth resistor R11 and a fifth resistor R15, one end of the fourth resistor R11 is connected to an output terminal (BAT) of the ME4074 charging chip U1, an electrical connection point of the fourth resistor R11 and the fifth resistor R15 is connected to a seventh control I/O port (refer to network reference number BAT _ AD in the drawing) of the control module 100, wherein the charging chip U3884 is used for receiving a charging current according to the first charging voltage CN V1 (CN) of the charging source CN 385V) Charging the battery BT 1; the second sampling circuit is used for detecting the voltage of the rechargeable battery BT 1; the control module 100 can detect the voltage input to the ME4074 charging chip U1 (through the seventh control I/O port).

It is understood that, in some embodiments, the input voltage detection module 201 includes an eighth resistor R7 and a ninth resistor R10 connected in series, one end of the eighth resistor R7 is connected to the first charging port CN1, an electrical connection point of the eighth resistor R7 and the ninth resistor R10 is connected to an eighth control I/O port (refer to network reference number charge _ voltage _ AD in the drawing) of the control module 100, and the other end of the ninth resistor R10 is connected to ground; the control module 100 can detect the voltage (5V) of the dc power supply connected to the first charging port CN1 by measuring the voltage at the electrical connection point of the eighth resistor R7 and the ninth resistor R10.

It is understood that, in some embodiments, the switch unit 300 includes a first KEY SW1, a sixth resistor R6, a seventh resistor R8 and a second capacitor C2, one end of the first KEY SW1 is connected to the sixth resistor R6 and the seventh resistor R8, the other end of the first KEY SW1 is connected to ground, the other end of the sixth resistor R6 is connected to the positive electrode BAT of the rechargeable battery BT1 of the power supply unit 200, the other end of the seventh resistor R7 is connected to the second capacitor C2 and the ninth control I/O port (refer to the network reference KEY in the drawing), and the other end of the second capacitor C2 is connected to ground.

It should be noted that, when the first key SW1 is not pressed, the voltage output by the rechargeable battery BT1 charges the second capacitor C2 through the sixth resistor R6 and the seventh resistor R8, when the first key SW1 is pressed, one end of the sixth resistor R6 is grounded, the second capacitor C2 is discharged, the control module 100 obtains a corresponding switch signal by detecting the voltage at the electrical connection point of the second capacitor C2 and the seventh resistor R8, and the length of time that the first key SW1 is pressed determines the generated key signal. In the embodiment, when the power-off state is set, the power-on state is started by short pressing the first key SW 1; in the on state, the first key SW1 is pressed for a short time to turn off, and in the on state, the first key SW1 is pressed for a long time of 5 seconds to turn on/off the photosensitive switch function.

The application also provides an embodiment, a germicidal lamp, comprising the control circuit of the germicidal lamp.

It should be further noted that the function of the germicidal lamp of the embodiment of the present application is set as follows:

the sterilization function is that the UV lamp beads are used for emitting ultraviolet rays for sterilization, the UV lamp is turned on, the LED lamp is turned on at the same time, and the UV lamp is turned off automatically after 20 seconds of work.

The function of the indicator light is that the LED light is always on under the working state; in a charging state, the LED lamp continuously flickers at intervals of 1 second, and is normally on after being fully charged; and starting the LED lamp at low power, and enabling the LED lamp to flash at an interval of 0.5S.

Key control

A photosensitive switch: the sterilization function is turned on when the light changes from dark to bright, and the machine is automatically turned off within 20 seconds;

a first key: in a power-off state, the UV lamp and the LED lamp are simultaneously turned on after the first key is pressed for a short time, and the UV lamp and the LED lamp are simultaneously and automatically turned off after 20 seconds; in the starting state, the UV lamp and the LED lamp are simultaneously turned off after the first key is pressed for a short time to shut down; the first key is pressed for 5 seconds for a long time, the function of the photosensitive switch can be turned on/off, the LED lamp flashes for 3 times in 0.5S when the function of the photosensitive switch is turned on, and flashes for 1 time in 1S when the function of the photosensitive switch is turned off.

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 control circuit of the germicidal lamp is characterized by comprising a control module, a power supply unit, a switch unit, a photosensitive switch unit and a light-emitting driving unit, wherein the power supply unit is electrically connected with the control module, the switch unit, the photosensitive switch unit and the light-emitting driving unit; the power supply unit is used for supplying power to the control module, the switch unit, the photosensitive switch unit, the light-emitting driving unit, the UV lamp and the LED lamp; the photosensitive switch unit is used for detecting the light brightness; the switch unit is used for generating a switch signal; the control module is used for starting and stopping the bactericidal lamp, switching on and off the photosensitive switch unit and controlling the light-emitting driving unit to drive the UV lamp to emit light according to the received switch signal, and the control module is also used for controlling the light-emitting driving unit to drive the UV lamp to emit light according to the light brightness detected by the photosensitive switch unit.

2. The germicidal lamp control circuit as claimed in claim 1, wherein the light-sensitive switch unit includes a first light pipe, a first switch pipe, a first resistor, a second resistor and a first capacitor, the first switch tube comprises a first input end, a first control end and a first output end, the input end of the first light guide tube is connected to the positive pole of the rechargeable battery of the power supply unit, an output end of the first light pipe is connected to the first control end and the first resistor, and the other end of the first output end and the first resistor is connected to a first control I/O port of the control module, the first input end is connected to the anode of the rechargeable battery through the second resistor in series, the first input end is also connected to a second control I/O port of the control module, and the first capacitor is electrically connected with the first input end and the first output end; the first light pipe generates a driving signal for driving the first switch tube to be switched on or switched off by detecting the brightness of light, and the first switch tube is driven by the driving signal to be switched on or switched off and generates a control signal for controlling the light-emitting driving unit to drive the UV lamp to emit light.

3. The germicidal lamp control circuit according to claim 2, wherein the first light pipe comprises a photodiode, and/or wherein the first switching tube comprises one of: MOS tube and triode.

4. The control circuit of the germicidal lamp as claimed in claim 1, wherein the power supply unit comprises an input voltage detection module, a charging module and a boosting module, an input end of the input voltage detection module is electrically connected to the first charging port, and an output end of the input voltage detection module is electrically connected to the control module; 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, and the output end of the boosting module is electrically connected with the UV lamp and the LED lamp; the first charging port is used for being externally connected with a direct current power supply; the input voltage detection module is used for detecting the voltage of the direct current power supply source accessed by the first charging port; 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 first voltage and supplying power to the control module, the switch unit, the light-emitting driving unit and the photosensitive switch unit; the voltage boosting module is used for converting the first voltage into a second voltage for the UV lamp and the LED lamp to emit light.

5. The control circuit of the germicidal lamp according to claim 4, wherein the boost module comprises a first inductor, a second switch tube, a first voltage regulator tube and a first sampling circuit, one end of the first inductor is connected to the positive electrode of the rechargeable battery, the other end of the first inductor is connected to the input end of the second switch tube and the first voltage regulator tube, the control end of the second switch tube is connected to the fourth control I/O port of the control module, the output end of the second switch tube is grounded, the other end of the first voltage regulator tube is connected to the output end of the boost module and the input end of the first sampling circuit, the output end of the first sampling circuit is connected to the fifth control I/O port of the control module, wherein the first sampling circuit is configured to collect the second voltage output by the boost module, generating a sampling signal corresponding to the second voltage; the control module can output a corresponding PWM control signal to the control end of the second switching tube according to the sampling signal and control the second switching tube to be switched on or switched off, so that the first inductor boosts the first voltage output by the rechargeable battery; the first voltage-regulator tube is used for regulating the voltage boosted by the first inductor into the second voltage.

6. The control circuit of the germicidal lamp recited in claim 4, wherein the charging module comprises an ME4074 charging chip, an input terminal of the ME4074 charging chip is connected to the first charging port by connecting a third resistor in series, an input terminal of the ME4074 charging chip is further connected to a sixth control I/O port of the control module, an output terminal of the ME4074 charging chip is electrically connected to the rechargeable battery, an output terminal of the ME4074 charging chip is further electrically connected to a second sampling circuit composed of a fourth resistor and a fifth resistor, one end of the fourth resistor is connected to an output terminal of the ME4074 charging chip, an electrical connection point of the fourth resistor and the fifth resistor is connected to a seventh control I/O port of the control module, wherein,

7. The control circuit of the germicidal lamp recited in claim 4, wherein the input voltage detection module comprises 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 control module, and the other end of the fifth resistor is connected to ground; the control module can detect the voltage of the direct current power supply accessed by the first charging port by measuring the voltage at the electric connection point of the fourth resistor and the fifth resistor.

8. The control circuit of the germicidal lamp as claimed in claim 1, wherein the switch unit comprises a first button, a sixth resistor, a seventh resistor and a second capacitor, one end of the first button is connected to the sixth resistor and the seventh resistor, the other end of the first button is connected to ground, the other end of the sixth resistor is connected to the positive electrode of the rechargeable battery of the power supply unit, the other end of the seventh resistor is connected to the second capacitor and the ninth control I/O port of the control module, and the other end of the second capacitor is connected to ground.

9. The control circuit of the germicidal lamp as in any of the claims 1-8, wherein the light emitting driving unit comprises a ULN2001 chip, and/or the control module comprises a CMS89F5523 single chip microcomputer.

10. A germicidal lamp comprising a control circuit as claimed in any one of the claims 1 to 9.