CN111467519B - Ultraviolet light disinfection lamp circuit - Google Patents

Ultraviolet light disinfection lamp circuit Download PDF

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Publication number
CN111467519B
CN111467519B CN202010207787.4A CN202010207787A CN111467519B CN 111467519 B CN111467519 B CN 111467519B CN 202010207787 A CN202010207787 A CN 202010207787A CN 111467519 B CN111467519 B CN 111467519B
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circuit
resistor
diode
capacitor
output
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CN111467519A (en
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俞贤晓
高明
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Yingtan Yankon Lighting Co ltd
Zhejiang Sunlight Illuminating Lamp Co ltd
Zhejiang Yankon Group Co Ltd
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Yingtan Yankon Lighting Co ltd
Zhejiang Sunlight Illuminating Lamp Co ltd
Zhejiang Yankon Group Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultra-violet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

The invention discloses an ultraviolet light disinfection lamp circuit, which has an automatic mode and a forced mode, wherein when the automatic mode is adopted, the lamp is turned on or turned off in stages through detecting the intensity of ambient light, when the intensity of the ambient light is detected to be changed from brighter to darker, the ultraviolet light disinfection lamp circuit is turned on for carrying out ultraviolet light disinfection for one time after the preset automatic lamp-on delay time and then is turned off and keeps the automatic mode, when the ultraviolet light disinfection lamp circuit enters the forced mode, the ultraviolet light disinfection lamp circuit is automatically turned on for carrying out ultraviolet light disinfection for one time after the preset forced lamp-on delay time and then is switched to the automatic mode, and the ultraviolet light disinfection lamp circuit is in the automatic mode or the forced mode and emits an acousto-optic warning signal which can be sensed by a human body when the ultraviolet light disinfection lamp circuit is turned on for disinfection; the advantage is that can turn on the lamp and turn off the lamp automatically evening, avoids causing the hidden danger of ultraviolet ray to human body injury, and sanitary degree is higher, can be used to the very high application occasion of sanitary requirement.

Description

Ultraviolet light disinfection lamp circuit
Technical Field
The invention relates to a circuit of a disinfection lamp, in particular to a circuit of an ultraviolet disinfection lamp.
Background
Along with the improvement of the health and living consciousness of people, the requirement of people on the sanitary quality is higher and higher, the mode of disinfecting objects or public places by utilizing ultraviolet light is more and more widely applied, and the ultraviolet light disinfection is a disinfection method which is generally adopted at present. The ultraviolet disinfection lamp is a device for ultraviolet disinfection, and ultraviolet light emitted by the ultraviolet disinfection lamp when the ultraviolet disinfection lamp is electrified can kill bacteria and viruses.
Although in the general illumination field, fluorescent lamps using the gas discharge principle have been gradually replaced by LED lamps. However, in the field of ultraviolet light disinfection, the ultraviolet light disinfection lamp designed by the principle of generating ultraviolet light by gas discharge is still popular because the cost of the ultraviolet light disinfection lamp is far lower than that of the ultraviolet light disinfection lamp designed by the principle of generating ultraviolet light by an ultraviolet LED luminescent device.
The ultraviolet ray disinfection lamp circuit designed based on the principle of producing ultraviolet ray by gas discharge includes driving power source circuit and ultraviolet ray lamp tube. The ultraviolet light tube adopts a structure similar to a common lighting fluorescent lamp tube, two ends of the ultraviolet light tube are respectively provided with two pins used as electrodes, the ultraviolet light tube is connected with a driving power circuit through the four pins, and the driving power circuit is connected with commercial power. Because excessive ultraviolet light is harmful to the human body, the ultraviolet light disinfection lamp circuit is provided with a plurality of external control keys, and the control of the driving power supply circuit is realized by operating the control keys, so that the functions of delaying starting to enable the human body to leave a safe distance and automatically turning off after lighting for a period of time are achieved, when the disinfection requirement is met, the ultraviolet light is reduced to the greatest extent to directly irradiate the human body, and the injury to the human body is avoided.
However, since ultraviolet light is invisible to the naked eye, when the existing ultraviolet disinfection lamp circuit is used, if a person does not notice that the ultraviolet disinfection lamp circuit is in an on state and is close to the ultraviolet disinfection lamp circuit, the person may be injured. Meanwhile, because the control key is operated by a contact method, in some application occasions with high sanitary requirements, the contact operation mode easily causes cross propagation of bacteria and viruses, and the sanitation degree is considered to be insufficient, so that the control key is difficult to apply.
Disclosure of Invention
The invention aims to solve the technical problem of providing an ultraviolet light disinfection lamp circuit which can automatically turn on and off the lamp at a certain time period at night, avoids the hidden danger of ultraviolet light damaging human bodies, has high sanitation degree and can be used in application occasions with high sanitary requirements.
The technical scheme adopted by the invention for solving the technical problems is as follows: an ultraviolet light disinfection lamp circuit is provided with an automatic mode and a forced mode, when the ultraviolet light disinfection lamp circuit is in the automatic mode, the ultraviolet light disinfection lamp circuit is turned on for one-time ultraviolet light disinfection after the preset automatic lamp-on delay time through detecting the intensity of ambient light in a stage mode of turning off or turning on the lamp, when the intensity of the ambient light is detected to be changed from brighter to darker, the ultraviolet light disinfection lamp circuit is turned off and keeps the automatic mode after the ultraviolet light disinfection is finished, when the ultraviolet light disinfection lamp circuit enters the forced mode, the ultraviolet light disinfection lamp circuit is automatically turned on for one-time ultraviolet light disinfection after the preset forced lamp-on delay time and is switched to the automatic mode after the ultraviolet light disinfection is finished, and the ultraviolet light disinfection lamp circuit is in the automatic mode or the forced mode, when the disinfection device is started for disinfection, the ultraviolet light is emitted and simultaneously the acousto-optic warning signal which can be sensed by human body is emitted.
The ultraviolet light disinfection lamp circuit comprises a rectifying circuit, a power conversion circuit, an ultraviolet light tube, a voltage conversion circuit, a visible light detection circuit, an induction sensor, a microprocessor circuit, a drive control circuit and a warning circuit, wherein the rectifying current is used for accessing mains supply and converting the accessed mains supply alternating current voltage into direct current voltage for output, the power conversion circuit is respectively connected with the rectifying circuit and the ultraviolet light tube, the power conversion circuit is accessed into the direct current voltage output by the rectifying circuit and converts the accessed direct current voltage into high-frequency alternating current for output to drive the ultraviolet light tube to emit light, the voltage conversion circuit is respectively connected with the rectifying circuit, the visible light detection circuit, the induction sensor, the microprocessor circuit and the warning circuit, and the voltage conversion circuit converts the direct current voltage output by the rectifying circuit and then respectively serves as the visible light detection circuit The sensing sensor outputs a pulse signal if the sensing sensor detects an object and outputs a level signal corresponding to the object, if the object does not detect the object, the sensing sensor outputs a pulse signal, the pulse width of the pulse signal is equal to the time length of the object staying in the sensing area of the sensing sensor, if the pulse width of the pulse signal is less than a preset time threshold value, the pulse signal is defined as a narrow pulse, and the mode that the object corresponding to the pulse signal moves in the sensing area of the sensing sensor is called as rapid passing, if the pulse width of the pulse signal is greater than or equal to the preset time threshold, the pulse signal is defined as a wide pulse, the mode that an object corresponding to the pulse signal moves in the sensing area of the induction sensor is called slow passing, the warning circuit is connected with the microprocessor circuit and can send out warning signals which can be sensed by a human body under the control of the microprocessor circuit, the driving control circuit is respectively connected with the power conversion circuit and the microprocessor circuit, when the driving control circuit is connected with a light-on signal output by the microprocessor circuit, the driving control circuit controls the power conversion circuit to output corresponding current to drive the ultraviolet lamp tube to emit light, and when the driving control circuit is connected with a light-off signal output by the microprocessor circuit, the drive control circuit controls the power conversion circuit not to output current, at the moment, the ultraviolet lamp tube does not emit light, at the moment when the ultraviolet disinfection lamp circuit is just connected with commercial power, the drive control function controls the power conversion circuit to be started after a set time delay, so that the power conversion circuit can enter a working state after the microprocessor circuit is normal, the microprocessor circuit is connected with the ambient light detection circuit and is connected with a voltage signal which is output by the ambient light detection circuit and corresponds to the ambient light intensity, an ambient light threshold voltage is arranged in the microprocessor circuit, if the relationship between the voltage signal output by the ambient light detection circuit and the ambient light intensity is that the ambient light is stronger and the output voltage signal is larger, when the voltage signal output by the ambient light detection circuit connected with the microprocessor circuit is larger than or equal to the ambient light threshold voltage, considering the ambient light to be brighter, considering the ambient light to be darker when the voltage signal output by the ambient light detection circuit accessed by the microprocessor circuit is smaller than the ambient light threshold voltage, considering the ambient light to be darker if the relationship between the voltage signal output by the ambient light detection circuit and the ambient light intensity is that the ambient light is stronger and the output voltage signal is smaller, considering the ambient light to be darker when the voltage signal output by the ambient light detection circuit accessed by the microprocessor circuit is greater than or equal to the ambient light threshold voltage, considering the ambient light to be brighter when the voltage signal output by the ambient light detection circuit accessed by the microprocessor circuit is smaller than the ambient light threshold voltage, connecting the microprocessor circuit and the induction sensor, and setting a time threshold for judging narrow pulses and wide pulses in the microprocessor circuit, determining the passing mode of the object in the induction area of the induction sensor based on the judgment results of the narrow pulse and the wide pulse; the microprocessor circuit has two control modes, one is a default mode, the other is a forced mode, under normal conditions, the microprocessor circuit is in the default mode, at the moment, the ultraviolet light disinfection lamp circuit is in the automatic mode, only when the microprocessor circuit receives that the pulse signal output by the induction sensor is a wide pulse, the microprocessor circuit can be switched to the one-time forced mode, the ultraviolet light disinfection lamp circuit enters the one-time forced mode, and when the lamp is turned off and the disinfection is stopped under the forced mode, the microprocessor circuit is switched to the default mode again, the default mode is a light control mode, when in the default mode, when the voltage signal output by the ambient light detection circuit received by the microprocessor circuit indicates that the ambient light is changed from brighter to darker, the microprocessor circuit delays the preset automatic lamp-on delay time, outputting a light-on signal, and entering one-time ultraviolet light disinfection under an automatic mode by the ultraviolet light disinfection lamp circuit, wherein if the time of outputting the light-on signal by the microprocessor circuit reaches the preset automatic light-on holding time and the voltage signal received by the microprocessor circuit and output by the ambient light detection circuit does not indicate that the ambient light is changed from darker to brighter or the microprocessor circuit does not receive the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal after the time of outputting the light-on signal reaches the preset automatic light-on holding time, and the current ultraviolet light disinfection is finished, and if the time of outputting the light-on signal by the microprocessor circuit reaches the preset automatic light-on holding time, the voltage signal received by the microprocessor circuit and output by the ambient light detection circuit indicates that the ambient light is changed from darker to brighter or brighter The microprocessor circuit receives the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal, the ultraviolet light disinfection is completed, at the moment, if the pulse signal output by the induction sensor is a wide pulse, the microprocessor circuit is switched to a forced mode, the microprocessor circuit outputs a light-on signal after delaying the preset forced light-on delay time, the ultraviolet light disinfection lamp circuit enters the ultraviolet light disinfection under the forced mode, at the moment, if the time of outputting the light-on signal by the microprocessor circuit reaches the preset forced light-on holding time, the microprocessor circuit does not receive the pulse signal output by the induction sensor again, and after the forced light-on holding time is reached, the microprocessor circuit outputs the light-off signal, the ultraviolet light disinfection is completed, the microprocessor circuit automatically switches to a default mode, if the time of the microprocessor circuit outputting a light-on signal reaches the preset forced light-on holding time, the microprocessor circuit receives the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal, the ultraviolet light disinfection is completed, the microprocessor circuit automatically switches to the default mode, and the microprocessor circuit outputs a warning-on signal to the warning circuit while outputting the light-on signal no matter in the default mode or the forced mode, and the warning circuit sends out an acousto-optic warning signal when accessing the warning-on signal.
The said rectification circuit has live wire input end, zero line input end, positive output end and negative output end, the said power conversion circuit has positive pole, negative pole, the first output end, the second output end, the third output end, the fourth output end, the first control end and the second control end, the said ultraviolet lamp tube has four connection ports, two pins of one end are the first input end and the second input end, two pins of the other end are the third input end and the fourth input end, the said voltage conversion circuit has positive pole, output end and negative pole, the said visible light detection circuit has positive pole, negative pole, the first output end and the second output end, the said induction sensor has positive pole, negative pole, control end and output end, the said drive control circuit has negative pole, control end, the first output end and the second output end, the said warning circuit has positive pole, The microprocessor circuit is provided with a positive electrode, a negative electrode, a first light detection input end, a second light detection output end, a PWM output end, an infrared input end, a first output end and a second output end, the live wire input end of the rectifying circuit is used for being connected with a live wire of a mains supply, the zero line input end of the rectifying circuit is used for being connected with a zero line of the mains supply, the output end of the rectifying circuit, the positive electrode of the power conversion circuit and the positive electrode of the voltage conversion circuit are connected, the first output end of the power conversion circuit is connected with the first input end of the ultraviolet lamp tube, the second output end of the power conversion circuit is connected with the second input end of the ultraviolet lamp tube, the third output end of the power conversion circuit is connected with the third input end of the ultraviolet lamp tube, and the fourth output end of the power conversion circuit is connected with the fourth input end of the ultraviolet lamp tube, the first control end of the power conversion circuit is connected with the first output end of the drive control circuit, the second control end of the power conversion circuit is connected with the second output end of the drive control circuit, the output end of the voltage conversion circuit is respectively connected with the anode of the visible light detection circuit, the anode of the induction sensor, the anode of the microprocessor circuit and the anode of the warning circuit, the first output end of the microprocessor is connected with the control end of the drive control circuit, the second output end of the microprocessor circuit is connected with the control end of the warning circuit, the first optical detection input end of the microprocessor circuit is connected with the first output end of the visible light detection circuit, the second optical detection input end of the microprocessor circuit is connected with the second output end of the visible light detection circuit, the PWM output end of the microprocessor circuit is connected with the control end of the induction sensor, the infrared input end of the microprocessor is connected with the output end of the induction sensor, and the negative output end of the rectifying circuit, the negative pole of the power conversion circuit, the negative pole of the voltage conversion circuit, the negative pole of the microprocessor circuit, the negative pole of the visible light detection circuit, the negative pole of the induction sensor, the negative pole of the warning circuit and the negative pole of the driving control circuit are connected.
The driving control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a first triode, a second triode, a first diode and a second diode, wherein the first capacitor is an electrolytic capacitor, the first diode is a rectifier diode, the second diode is a voltage stabilizing diode, one end of the first resistor is a control end of the driving control circuit, the other end of the first resistor is connected with a base electrode of the first triode, an emission set of the first triode, a base electrode of the second triode and one end of the second resistor are connected, a collector electrode of the second triode is a first output end of the driving control circuit, a collector electrode of the first triode, a negative electrode of the first diode and one end of the third resistor are connected, the other end of the third resistor, the anode of the first capacitor and one end of the fourth resistor are connected, the other end of the fourth resistor is connected with the cathode of the second diode, the anode of the first diode is connected with the anode of the second diode, the connecting end of the first diode is the second output end of the drive control circuit, and the other end of the second resistor, the emitter of the second triode and the cathode of the first capacitor are connected, and the connecting end of the second diode is the cathode of the drive control circuit. The drive control circuit is realized by adopting discrete components, so that the function of controlling the delayed start of the power conversion circuit when the ultraviolet disinfection lamp circuit is just connected into the city power is realized on the basis of ensuring lower cost and higher reliability, and the phenomenon of flashing light which is possibly caused because the starting speed of the power conversion circuit is faster than that of a microprocessor is avoided.
The visible light detection circuit comprises a phototriode, a fifth resistor and a sixth resistor, wherein the collector of the phototriode is the anode of the visible light detection circuit, the emitter of the phototriode is connected with one end of the fifth resistor, the connecting end of the emitter is the first output end of the visible light detection circuit, the other end of the fifth resistor is connected with one end of the sixth resistor, the connecting end of the fifth resistor is the second output end of the visible light detection circuit, and the other end of the sixth resistor is the cathode of the visible light detection circuit. When the visible light detection circuit and the microprocessor circuit are used, the microprocessor circuit can use two universal input ports to replace one ADC port, so that the performance requirement on the microprocessor circuit is reduced, and the overall circuit cost is reduced.
The induction sensor comprises a seventh resistor, an eighth resistor, a second capacitor, a first LED, a first NMOS tube and an infrared remote control receiving head, wherein the first LED is an infrared light emitting diode, the infrared remote control receiving head is a universal household appliance remote control infrared remote control receiving head and is provided with an anode, a cathode and a signal output pin, one end of the seventh resistor is connected with one end of the eighth resistor, the connecting end of the seventh resistor is the anode of the induction sensor, the other end of the seventh resistor is connected with the anode of the first LED, the cathode of the first LED is connected with the drain electrode of the first NMOS tube, the grid electrode of the first NMOS tube is the control end of the induction sensor, the other end of the eighth resistor, one end of the second capacitor is connected with the anode of the infrared remote control receiving head, the signal output pin of the infrared remote control receiving head is the output end of the induction sensor, the source electrode of the first NMOS tube, the other end of the second capacitor and the negative electrode of the infrared remote control receiving head are connected, and the connecting end of the first NMOS tube and the negative electrode of the second NMOS tube is the negative electrode of the induction sensor. When the control end of the induction sensor is connected to a control signal of 36-38Kz, the first LED light-emitting tube emits infrared light with the same variable frequency, if the infrared light is emitted by an object and received by the infrared remote control receiving head, 0 level is output, and when the infrared light is not reflected by the object, the infrared remote control receiving head outputs 1 level, so that the induction sensor adopts a simple circuit structure to realize generation and transmission of signals, the power consumption is low, the cost is low, the induction sensor utilizes hands as a light-reflecting object, the moving mode of the object in front of the induction sensor is used as a non-contact control means, and meanwhile, no object exists in the induction range in front of the induction sensor, namely, when the infrared receiving head does not receive infrared light emitted by the induction sensor, the infrared remote controller signal can be received, and remote control setting is carried out.
The warning circuit include ninth resistance, second NMOS pipe second LED luminotron and bee calling organ, second LED luminotron be LED emitting diode, the one end of ninth resistance with bee calling organ's anodal connect and its link do warning circuit's positive pole, the other end of ninth resistance with second LED luminotron's anodal connect, second LED luminotron's negative pole bee calling organ's negative pole with second NMOS pipe's drain electrode connect, second NMOS pipe's source electrode do warning circuit's negative pole, second NMOS's grid do warning circuit's control end.
The power conversion circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a third diode, a fourth diode, a fifth diode, a first bidirectional trigger diode, a third triode, a fourth triode, a first inductor and a first pulse transformer, wherein the third capacitor is an electrolytic capacitor, the third diode, the fourth diode and the fifth diode are rectifier diode tubes, the first pulse transformer comprises a primary coil and two secondary coils, the primary coil of the first pulse transformer is called a first coil, the two secondary coils of the first pulse transformer are called a second coil and a third coil, respectively, and the anode of the third capacitor, A collector of the third triode, a cathode of the fourth diode, one end of the fifteenth resistor and one end of the fifth capacitor are connected, a connection end of the fifteenth resistor and one end of the fifth capacitor is an anode of the power conversion circuit, and a connection end of the fifteenth resistor and one end of the fifth capacitor is a first output end of the power conversion circuit, the other end of the fifth capacitor, the other end of the fifteenth resistor, an anode of the fourth diode, a cathode of the fifth diode, one end of the first coil, a collector of the fourth triode, one end of the thirteenth resistor, one end of the tenth resistor, a cathode of the third diode and one end of the second coil are connected, the other end of the second coil is connected with one end of the eleventh resistor, and the other end of the eleventh resistor is connected with a base of the third triode, the emitter of the third triode is connected with the other end of the thirteenth resistor, the other end of the tenth resistor, the anode of the third diode, one end of the fourth capacitor and one end of the first diac are connected, the connection end of the tenth resistor is the second control end of the power conversion circuit, the other end of the first diac, one end of the third coil and one end of the twelfth resistor are connected, the other end of the twelfth resistor and the base of the fourth triode are connected, the connection end of the twelfth resistor and one end of the base of the fourth triode are the first control end of the power conversion circuit, the emitter of the fourth triode and one end of the fourteenth resistor are connected, the cathode of the third capacitor, the other end of the fourth capacitor, the other end of the third coil, the other end of the fourteenth resistor and the anode of the fifth diode are connected, and the connection end of the fourteenth resistor and one end of the fourteenth resistor are connected The other end of the first coil is connected with one end of the first inductor, the other end of the first inductor is connected with one end of the sixth capacitor, the other end of the sixth capacitor is a fourth output end of the power conversion circuit, one end of the seventh capacitor is a second output end of the power conversion circuit, and the other end of the seventh capacitor is a third output end of the power conversion circuit. The circuit is realized by adopting discrete components, and has high reliability on the basis of simple structure and lower cost.
The power conversion circuit comprises a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixth diode, a seventh diode, an eighth diode, a ninth diode, a twelfth diode, an eleventh diode, a twelfth diode, a second bidirectional trigger diode, a fifth triode, a sixth triode, a second pulse transformer and a second inductor, wherein the fourteen capacitor and the fifteenth capacitor are electrolytic capacitors, the sixth diode, the seventh diode, the eighth diode, the ninth diode, the twelfth diode, the eleventh diode and the twelfth diode are rectifier diodes, the second pulse transformer comprises a primary coil and two secondary coils, the primary coil of the second pulse transformer is called a fourth coil, the two secondary coils of the second pulse transformer are respectively called a fifth coil and a sixth coil, one end of the eighth capacitor, the collector of the fifth triode, the cathode of the seventh diode, one end of the twenty-first resistor, one end of the tenth capacitor, one end of the twelfth capacitor, the anode of the fourteenth capacitor and the cathode of the twelfth diode are connected, and the connecting end of the eighth capacitor, the collector of the fifth triode, the cathode of the seventh diode, the one end of the twenty-first resistor, the one end of the tenth capacitor, the one end of the twelfth capacitor, the anode of the fourteenth capacitor and the cathode of the twelfth diode are connected and are the anode of the power conversion circuit; the other end of the tenth capacitor, the other end of the twenty-first resistor, one end of the fourth coil, the anode of the seventh diode, the cathode of the eighth diode, one end of the nineteenth resistor, the collector of the sixth triode, the cathode of the sixth diode, one end of the sixteenth resistor and one end of the fifth coil are connected, the other end of the fifth coil is connected with one end of the seventeenth resistor, the other end of the seventeenth resistor is connected with the base of the fifth triode, and the emitter of the fifth triode is connected with the other end of the nineteenth resistor; the other end of the sixteenth resistor, the anode of the sixth diode, one end of the second bidirectional trigger diode and one end of the ninth capacitor are connected, and the connection end of the second bidirectional trigger diode is the second control end of the power conversion circuit; the other end of the second bidirectional trigger diode and one end of the sixth coil are connected with one end of the eighteenth resistor, the other end of the eighteenth resistor is connected with the base electrode of the sixth triode, and the connecting end of the eighteenth resistor is the first control end of the power conversion circuit; an emitting electrode of the sixth triode is connected with one end of the twentieth resistor, the other end of the fourth coil is connected with one end of the second inductor, and the other end of the second inductor is a first output end of the power conversion circuit; one end of the eleventh capacitor is a second output end of the power conversion circuit, the other end of the eleventh capacitor is a third output end of the power conversion circuit, the other end of the twelfth capacitor, one end of the thirteenth capacitor, and the cathode of the ninth diode are connected with the anode of the twelfth diode, and the connection end thereof is a fourth output end of the power conversion circuit, the anode of the ninth diode, the cathode of the fourteenth capacitor are connected with the cathode of the eleventh diode, and the cathode of the twelfth diode, the anode of the twelfth diode are connected with the anode of the fifteenth capacitor; the other end of the eighth capacitor, the other end of the ninth capacitor, the other end of the twentieth resistor, the anode of the eighth diode, the other end of the sixth coil, the other end of the thirteenth capacitor, the anode of the eleventh diode and the cathode of the fifteenth capacitor are connected, and the connection end is the cathode of the power conversion circuit. The circuit is realized by adopting discrete components, and has high reliability on the basis of simple structure and lower cost.
Compared with the prior art, the invention has the advantages that the automatic mode and the forced mode are arranged in the ultraviolet light disinfection lamp circuit, when the ultraviolet light disinfection lamp circuit is in the automatic mode, the lamp is turned on or off in stages through detecting the intensity of the environment light, when the intensity of the environment light is detected to be changed from bright to dark, the ultraviolet light disinfection lamp circuit is turned on for one-time ultraviolet light disinfection after the preset automatic lamp-on delay time, after the ultraviolet light disinfection is finished, the ultraviolet light disinfection lamp circuit is turned off and keeps the automatic mode, when the ultraviolet light disinfection lamp circuit enters the forced mode, the ultraviolet light disinfection lamp circuit is automatically turned on for one-time ultraviolet light disinfection after the preset forced lamp-on delay time, and is switched to the automatic mode after the ultraviolet light disinfection is finished, and the ultraviolet light disinfection lamp circuit is in the automatic mode or the forced mode, the automatic mode and the forced mode self-check switch automatically without contact operation, have higher sanitary degree and can be used in application occasions with higher sanitary requirements.
Drawings
FIG. 1 is a block diagram of the overall structure of the ultraviolet light disinfection lamp circuit of the invention;
FIG. 2 is a partial circuit diagram of the UV light disinfection lamp circuit of the present invention;
FIG. 3 is a circuit diagram of a power conversion circuit of a first embodiment of the UV light sterilization lamp circuit of the present invention;
FIG. 4 is a circuit diagram of a power conversion circuit of a second embodiment of the UV light sterilization lamp circuit of the present invention;
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows: an ultraviolet light disinfection lamp circuit has an automatic mode and a forced mode, when the ultraviolet light disinfection lamp circuit is in the automatic mode, the lamp is turned on or turned off in stages by detecting the intensity of ambient light, when the intensity of the ambient light is detected to be changed from brighter to darker, the ultraviolet light disinfection lamp circuit is started for carrying out ultraviolet light disinfection for one time after the preset automatic lamp-on delay time, when the ultraviolet light disinfection is finished, the ultraviolet light disinfection lamp circuit is closed and is kept in an automatic mode, when the ultraviolet light disinfection lamp circuit enters a forced mode, the ultraviolet light disinfection lamp circuit is automatically started to carry out ultraviolet light disinfection for one time after the preset forced lamp-on delay time, and is switched to an automatic mode after the ultraviolet light disinfection is finished, the ultraviolet light disinfection lamp circuit is in the automatic mode or the forced mode, when the disinfection device is started for disinfection, the ultraviolet light is emitted and simultaneously the acousto-optic warning signal which can be sensed by human body is emitted.
In this embodiment, as shown in fig. 1, an ultraviolet disinfection lamp circuit includes a rectifying circuit, a power conversion circuit, an ultraviolet lamp tube, a voltage conversion circuit, a visible light detection circuit, an inductive sensor, a microprocessor circuit, a driving control circuit, and a warning circuit, wherein a rectified current is used to access mains supply and convert an ac voltage of the accessed mains supply into a dc voltage for output, the power conversion circuit is respectively connected to the rectifying circuit and the ultraviolet lamp tube, the power conversion circuit is connected to the dc voltage output by the rectifying circuit and converts the dc voltage into a high-frequency ac current for output to drive the ultraviolet lamp tube to emit light, the voltage conversion circuit is respectively connected to the rectifying circuit, the visible light detection circuit, the inductive sensor, the microprocessor circuit, and the warning circuit, and the voltage conversion circuit converts the dc voltage output by the rectifying circuit into a visible light detection circuit, a visible, The induction sensor, the microprocessor circuit and the warning circuit provide working voltage, the visible light detection circuit linearly converts the received ambient light intensity signal into a corresponding voltage signal, if the induction sensor detects an object, the induction sensor outputs a level signal corresponding to the object, if the induction sensor does not detect the object, the visible light detection circuit outputs a level signal corresponding to no object, when the object passes through a sensing area of the induction sensor, the induction sensor outputs a pulse signal, the pulse width of the pulse signal is equal to the time length of the object staying in the sensing area of the induction sensor, if the pulse width of the pulse signal is less than a preset time threshold value, the pulse signal is defined as a narrow pulse, the mode that the object corresponding to the pulse signal moves in the sensing area of the induction sensor is called as fast passing, if the pulse width of the pulse signal is more than or equal to the preset time threshold value, the pulse signal is defined as a wide pulse, the mode that an object corresponding to the pulse signal moves in a sensing area of the induction sensor is called slow passing, the warning circuit is connected with the microprocessor circuit and can send out warning signals which can be sensed by a human body under the control of the microprocessor circuit, the driving control circuit is respectively connected with the power conversion circuit and the microprocessor circuit, when the driving control circuit is connected with a light-on signal output by the microprocessor circuit, the driving control circuit controls the power conversion circuit to output corresponding current to drive the ultraviolet lamp tube to emit light, when the driving control circuit is connected with a light-off signal output by the microprocessor circuit, the driving control circuit controls the power conversion circuit not to output current, the ultraviolet lamp tube does not emit light at the moment, at the moment when the ultraviolet disinfection lamp circuit is just connected with commercial power, the driving control function controls the power conversion circuit to start after the time delay setting, the power conversion circuit can enter a working state after the microprocessor circuit is normal, the microprocessor circuit is connected with the ambient light detection circuit and is connected with a voltage signal which is output by the ambient light detection circuit and corresponds to the intensity of the ambient light, the threshold voltage of the ambient light is arranged in the microprocessor circuit, if the relation between the voltage signal output by the ambient light detection circuit and the intensity of the ambient light is stronger, the output voltage signal is larger, when the voltage signal output by the ambient light detection circuit connected with the microprocessor circuit is more than or equal to the threshold voltage of the ambient light, the ambient light is considered to be brighter, when the voltage signal output by the ambient light detection circuit connected with the microprocessor circuit is smaller than the threshold voltage of the ambient light, the ambient light is considered to be darker, if the relation between the voltage signal output by the ambient light detection circuit and the intensity of the ambient light is stronger, the output voltage signal is smaller, when the voltage signal output by the environment light detection circuit accessed by the microprocessor circuit is greater than or equal to the environment light threshold voltage, the environment light is considered to be darker, and when the voltage signal output by the environment light detection circuit accessed by the microprocessor circuit is smaller than the environment light threshold voltage, the environment light is considered to be brighter, the microprocessor circuit is connected with the induction sensor, a time threshold used for judging the narrow pulse and the wide pulse is arranged in the microprocessor circuit, and the passing mode of an object in the induction area of the induction sensor is determined based on the judgment results of the narrow pulse and the wide pulse; the microprocessor circuit has two control modes, one is a default mode, the other is a forced mode, under normal conditions, the microprocessor circuit is in the default mode, at the moment, the ultraviolet light disinfection lamp circuit is in the automatic mode, only when the microprocessor circuit receives that the pulse signal output by the induction sensor is a wide pulse, the microprocessor circuit can be switched to the primary forced mode, the ultraviolet light disinfection lamp circuit enters the primary forced mode, and when the microprocessor circuit stops disinfection after the lamp is turned off under the primary forced mode, the microprocessor circuit is switched to the default mode again, the default mode is a light control mode, when the voltage signal output by the ambient light detection circuit received by the microprocessor circuit indicates that the ambient light is changed from brighter to darker, the microprocessor circuit outputs a lamp turn-on signal after delaying the preset automatic lamp turn-on delay time, the ultraviolet light disinfection lamp circuit enters the primary ultraviolet light disinfection under the automatic mode, at this time, if the time of the microprocessor circuit outputting the light-on signal reaches the preset automatic light-on holding time, and in the process, the voltage signal received by the microprocessor circuit and output by the ambient light detection circuit does not indicate that the ambient light is changed from darker to brighter or the microprocessor circuit does not receive the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal after the time of the light-on signal output by the microprocessor circuit reaches the preset automatic light-on holding time, the ultraviolet light sterilization is finished this time, if the voltage signal received by the microprocessor circuit and output by the ambient light detection circuit indicates that the ambient light is changed from darker to brighter or the microprocessor circuit receives the pulse signal output by the induction sensor again before the time of the light-on signal output by the microprocessor circuit reaches the preset automatic light-on holding time, the microprocessor circuit outputs a light-off signal, finishing the ultraviolet light disinfection, wherein if the pulse signal output by the induction sensor is a wide pulse, the microprocessor circuit is switched to a forced mode, the microprocessor circuit outputs a light-on signal after delaying the preset forced light-on delay time, the ultraviolet light disinfection lamp circuit enters the ultraviolet light disinfection under the forced mode, if the time of the light-on signal output by the microprocessor circuit reaches the preset forced light-on holding time, the microprocessor circuit does not receive the pulse signal output by the induction sensor again, after the forced light-on holding time is reached, the microprocessor circuit outputs a light-off signal, the ultraviolet light disinfection is finished, the microprocessor circuit automatically switches to a default mode, and if the time of the light-on signal output by the microprocessor circuit reaches the preset forced light-on holding time, the microprocessor circuit receives the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal, the ultraviolet light disinfection is completed, the microprocessor circuit automatically switches to a default mode, and the microprocessor circuit outputs a warning opening signal to the warning circuit while outputting a light-on signal no matter in the default mode or in a forced mode, and the warning circuit sends out an acousto-optic warning signal when accessing the warning opening signal.
In this embodiment, as shown in fig. 1, the rectifier circuit has a live wire input end, a zero line input end, a positive output end and a negative output end, the power conversion circuit has a positive electrode, a negative electrode, a first output end, a second output end, a third output end, a fourth output end, a first control end and a second control end, the ultraviolet lamp tube has four connection ports, two pins at one end of the ultraviolet lamp tube are respectively the first input end and the second input end, pins at the other end of the ultraviolet lamp tube are respectively the third input end and the fourth input end, the voltage conversion circuit has a positive electrode, an output end and a negative electrode, the visible light detection circuit has a positive electrode, a negative electrode, a first output end and a second output end, the induction sensor has a positive electrode, a negative electrode, a control end and an output end, the driving control circuit has a negative electrode, a control end, a first output end and a second output end, the warning circuit, The power supply comprises a negative electrode, a first light detection input end, a second light detection output end, a PWM output end, an infrared input end, a first output end and a second output end, wherein the live wire input end of a rectifying circuit is used for being connected with a live wire of commercial power, the null wire input end of the rectifying circuit is used for being connected with a null wire of the commercial power, the output end of the rectifying circuit, the positive electrode of a power conversion circuit and the positive electrode of a voltage conversion circuit are connected, the first output end of the power conversion circuit is connected with the first input end of an ultraviolet lamp tube, the second output end of the power conversion circuit is connected with the second input end of the ultraviolet lamp tube, the third output end of the power conversion circuit is connected with the third input end of the ultraviolet lamp tube, the fourth output end of the power conversion circuit is connected with the fourth input end of the ultraviolet lamp tube, the first control end of the power conversion circuit is connected with the, the output end of the voltage conversion circuit is respectively connected with the anode of the visible light detection circuit, the anode of the induction sensor, the anode of the microprocessor circuit and the anode of the warning circuit, the first output end of the microprocessor is connected with the control end of the drive control circuit, the second output end of the microprocessor circuit is connected with the control end of the warning circuit, the first light detection input end of the microprocessor circuit is connected with the first output end of the visible light detection circuit, the second light detection input end of the microprocessor circuit is connected with the second output end of the visible light detection circuit, the PWM output end of the microprocessor circuit is connected with the control end of the induction sensor, the infrared input end of the microprocessor is connected with the output end of the induction sensor, the negative output end of the rectification circuit, the cathode of the power conversion circuit, the cathode of the voltage conversion circuit, the cathode of the microprocessor circuit, the cathode of the visible, The negative pole of the induction sensor and the negative pole of the warning circuit are connected with the negative pole of the driving control circuit.
In this embodiment, as shown in fig. 2, the driving control circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a first transistor Q1, a second transistor Q2, a first diode D1 and a second diode D2, the first capacitor C1 is an electrolytic capacitor, the first diode D1 is a rectifier diode, the second diode D2 is a zener diode, one end of the first resistor R1 is a control end of the driving control circuit, the other end of the first resistor R1 is connected to a base of the first transistor Q1, an emission collector of the first transistor Q1, a base of the second transistor Q9 and one end of the second resistor R2 are connected, a collector of the second transistor Q2 is a first output end of the driving control circuit, a collector of the first transistor Q1, a cathode of the first diode D1 and one end of the third resistor R3 are connected, a collector of the first resistor R3, a first end of the first resistor R4 and a positive electrode R1, the other end of the fourth resistor R4 is connected with the cathode of the second diode D2, the anode of the first diode D1 is connected with the anode of the second diode D2, the connection end of the first diode D2 is a second output end of the driving control circuit, the other end of the second resistor R2, the emitter of the second triode Q2 and the cathode of the first capacitor C1 are connected, and the connection end of the second resistor R2 is the cathode of the driving control circuit.
In this embodiment, as shown in fig. 2, the visible light detection circuit includes a phototransistor S1, a fifth resistor R5, and a sixth resistor R6, a collector of the phototransistor S1 is an anode of the visible light detection circuit, an emitter of the phototransistor S1 is connected to one end of the fifth resistor R5, and a connection end of the emitter is a first output end of the visible light detection circuit, another end of the fifth resistor R5 is connected to one end of the sixth resistor R6, and a connection end of the fifth resistor R3538 is a second output end of the visible light detection circuit, and another end of the sixth resistor R6 is a cathode of the visible light detection circuit.
In this embodiment, as shown in fig. 2, the induction sensor includes a seventh resistor R7, an eighth resistor R8, a second capacitor C2, a first LED tube LED1, a first NMOS tube M1 and an infrared remote control receiving head U1, the first LED tube LED1 is an infrared light emitting diode, the infrared remote control receiving head U1 is a universal remote control infrared remote control receiving head U1 for household appliances, and has a positive electrode, a negative electrode and a signal output pin, one end of the seventh resistor R7 is connected to one end of the eighth resistor R8, and the connection end is the positive electrode of the induction sensor, the other end of the seventh resistor R7 is connected to the positive electrode of the first LED tube LED1, the negative electrode of the first LED tube LED1 is connected to the drain electrode of the first NMOS tube M1, the gate of the first NMOS tube M1 is the control end of the induction sensor, the other end of the eighth resistor R8, one end of the second capacitor C2 is connected to the drain electrode of the infrared remote control receiving head U1, the output pin 1 of the infrared remote control receiving head is the output pin of the induction sensor, the source electrode of the first NMOS transistor M1 and the other end of the second capacitor C2 are connected with the cathode of the infrared remote control receiving head U1, and the connection end of the first NMOS transistor M1 and the other end of the second capacitor C2 is the cathode of the induction sensor.
In this embodiment, as shown in fig. 2, the warning circuit includes a ninth resistor R9, a second NMOS tube M2, a second LED tube LED2 and a buzzer LS, the second LED tube LED2 is an LED, one end of the ninth resistor R9 is connected to the positive electrode of the buzzer LS, and the connection end thereof is the positive electrode of the warning circuit, the other end of the ninth resistor R9 is connected to the positive electrode of the second LED tube LED2, the negative electrode of the second LED tube LED2, the negative electrode of the buzzer LS is connected to the drain of the second NMOS tube M2, the source of the second NMOS tube M2 is the negative electrode of the warning circuit, and the gate of the second NMOS is the control end of the warning circuit.
In this embodiment, as shown in fig. 3, the power conversion circuit includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a third diode D3, a fourth diode D4, a fifth diode D5, a first diode DB3-1, a third transistor Q3, a fourth transistor Q3, a first inductor L3, and a first pulse transformer, where the third capacitor C3 is an electrolytic capacitor, the third diode D3, the fourth diode D3, and the fifth diode D3 are rectifier diode tubes, the first pulse transformer includes a primary coil and two secondary coils, the primary coil of the first pulse transformer is referred to as a first coil B3-T3, and the second coil of the first pulse transformer is referred to as a second coil B3-T3, the anode of the third capacitor C3, the collector of the third triode Q3, the cathode of the fourth diode D4, one end of the fifteenth resistor R15 and one end of the fifth capacitor C5 are connected, and the connection end is the anode of the power conversion circuit, and also is the first output end of the power conversion circuit, the other end of the fifth capacitor C5, the other end of the fifteenth resistor R15, the anode of the fourth diode D4, the cathode of the fifth diode D5, one end of the first coil B1-T1, the collector of the fourth triode Q4, one end of the thirteenth resistor R13, one end of the tenth resistor R10, the cathode of the third diode D3 and one end of the second coils B1-T2 are connected, the other end of the second coils B1-T2 is connected to one end of the eleventh resistor R11, the other end of the eleventh resistor R11 is connected to the base of the third triode Q3, the emitter of the third triode Q3 is connected to the thirteenth resistor R13, the other end of the tenth resistor R10, the anode of the third diode D3, one end of the fourth capacitor C4 and one end of the first bidirectional trigger diode DB3-1 are connected and the connection end thereof is the second control end of the power conversion circuit, the other end of the first bidirectional trigger diode DB3-1, one end of the third coil B1-T3 and one end of the twelfth resistor R12 are connected, the other end of the twelfth resistor R12 and the base of the fourth transistor Q4 are connected and the connection end thereof is the first control end of the power conversion circuit, the emitter of the fourth transistor Q4 and one end of the fourteenth resistor R14 are connected, the cathode of the third capacitor C3, the other end of the fourth capacitor C4, the other end of the third coil B1-T3, the other end of the fourteenth resistor R14 and the anode of the fifth diode D5 are connected and the connection end thereof is the cathode of the power conversion circuit, the other end of the first coil B1-T1 and one end of the first inductor 1 are connected, the other end of the first inductor L1 is connected to one end of the sixth capacitor C6, the other end of the sixth capacitor C6 is a fourth output terminal of the power conversion circuit, one end of the seventh capacitor C7 is a second output terminal of the power conversion circuit, and the other end of the seventh capacitor C7 is a third output terminal of the power conversion circuit.
In this embodiment, the microprocessor circuit is implemented by a single chip integrated circuit with strong versatility and low cost, and is packaged by 8 pins, and has a positive pin and a negative pin connected with a power supply, a PWM pin capable of being set to PWM signal output, two signal output pins, and three signal input pins, wherein the positive pin of the single chip integrated circuit is a positive electrode of the microprocessor circuit, the negative pin of the single chip integrated circuit is a negative electrode of the microprocessor circuit, one of the output pins of the single chip integrated circuit is a first output terminal of the microprocessor circuit, and the other output pin of the single chip integrated circuit is a second output terminal of the microprocessor circuit; the first input pin of the singlechip integrated circuit is the first input end of the light detection of the microprocessor circuit, and the second input pin of the singlechip integrated circuit is the second input end of the light detection of the microprocessor circuit; the PWM pin of the singlechip integrated circuit is the PWM output end of the microprocessor, and the third input pin of the singlechip integrated circuit is the second input end of the light detection of the microprocessor circuit.
In this embodiment, the voltage conversion circuit is implemented by a conventional voltage-reducing conversion power supply circuit, one end of the positive voltage output of the voltage-reducing conversion power supply circuit is the positive electrode of the voltage conversion circuit, the positive electrode outputting the constant voltage is the output end of the voltage conversion circuit, and the negative electrode of the input voltage and the negative electrode of the output voltage are connected together to form the negative electrode of the voltage conversion circuit.
In this embodiment, the rectifier circuit is implemented by using a full-bridge rectifier Db, one ac input end of the full-bridge rectifier Db is a live wire input end of the rectifier circuit, the other ac input end is a zero line input end of the rectifier circuit, an anode of a dc voltage output of the full-bridge rectifier Db is a positive output end of the rectifier circuit, and a cathode of the dc voltage output of the full-bridge rectifier Db is a negative output end of the rectifier circuit.
Example two: this embodiment is substantially the same as the first embodiment, except that: in this embodiment, as shown in fig. 4, the power conversion circuit includes a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, an eighth capacitor C8, a ninth capacitor C8, a tenth capacitor C8, an eleventh capacitor C8, a twelfth capacitor C8, a thirteenth capacitor C8, a fourteenth capacitor C8, a fifteenth capacitor C8, a sixth diode D8, a seventh diode D8, an eighth diode D8, a ninth diode D8, a twelfth diode D8, a second bidirectional trigger diode 8-2, a fifth triode DB Q8, a sixth diode Q8, a second pulse transformer and a second inductor L8, wherein the fourteenth capacitor and the fifteenth diode C8 are electrolytic capacitors, the sixth diode D8, the seventh diode DB Q8, the eighth diode D8, the ninth diode D8, the twelfth diode D8, the ninth diode D8, the eighth diode D8, the ninth, The eleventh diode D11 and the twelfth diode D12 are rectifier diodes, the second pulse transformer includes a primary coil and two secondary coils, the primary coil of the second pulse transformer is referred to as a fourth coil B2-T1, the two secondary coils of the second pulse transformer are referred to as a fifth coil B2-T2 and a sixth coil B2-T3, respectively, one end of the eighth capacitor C8, the collector of the fifth triode Q5, the cathode of the seventh diode D7, one end of the twenty-first resistor R21, one end of the tenth capacitor C10, one end of the twelfth capacitor C12, the anode of the fourteenth capacitor C14 and the cathode of the twelfth diode D12 are connected, and the connection end thereof is the anode of the power conversion circuit; the other end of the tenth capacitor C10, the other end of the twenty-first resistor R21, one end of a fourth coil B2-T1, the anode of a seventh diode D7, the cathode of an eighth diode D8, one end of a nineteenth resistor R19, the collector of a sixth triode Q6, the cathode of a sixth diode D6, one end of a sixteenth resistor R16 and one end of a fifth coil B2-T2 are connected, the other end of the fifth coil B2-T2 and one end of a seventeenth resistor R17 are connected, the other end of the seventeenth resistor R17 and the base of the fifth triode Q5 are connected, and the emitter of the fifth triode Q5 and the other end of the nineteenth resistor R19 are connected; the other end of the sixteenth resistor R16, the anode of the sixth diode D6, one end of the second bidirectional trigger diode DB3-2 and one end of the ninth capacitor C9 are connected, and the connection end of the connection end is the second control end of the power conversion circuit; the other end of the second bidirectional trigger diode DB3-2, one end of the sixth coil B2-T3 and one end of an eighteenth resistor R18 are connected, the other end of the eighteenth resistor R18 is connected with the base electrode of the sixth triode Q6, and the connection end of the eighteenth resistor R18 is the first control end of the power conversion circuit; an emitter of the sixth triode Q6 is connected with one end of a twentieth resistor R20, the other end of the fourth coil B2-T1 is connected with one end of a second inductor L2, and the other end of the second inductor L2 is a first output end of the power conversion circuit; one end of an eleventh capacitor C11 is a second output end of the power conversion circuit, the other end of the eleventh capacitor C11 is a third output end of the power conversion circuit, the other end of a twelfth capacitor C12, one end of a thirteenth capacitor C13, the cathode of a ninth diode D9 and the anode of a twelfth diode D10 are connected, and the connection end thereof is a fourth output end of the power conversion circuit, the anode of a ninth diode D9, the cathode of a fourteenth capacitor C14 and the cathode of an eleventh diode D11 are connected, the cathode of a twelfth diode D10, the anode of a twelfth diode D12 and the anode of a fifteenth capacitor C15 are connected; the other end of the eighth capacitor C8, the other end of the ninth capacitor C9, the other end of the twentieth resistor R20, the anode of the eighth diode D8, the other ends of the sixth coils B2-T3, the other end of the thirteenth capacitor C13, the anode of the eleventh diode D11 and the cathode of the fifteenth capacitor C15 are connected, and the connection end of the connection ends is the cathode of the power conversion circuit.

Claims (8)

1. An ultraviolet light disinfection lamp circuit is characterized by comprising an automatic mode and a forced mode, when the ultraviolet light disinfection lamp circuit is in the automatic mode, the lamp is turned on or turned off in stages through detection of the intensity of ambient light, when the intensity of the ambient light is detected to be changed from bright to dark, the ultraviolet light disinfection lamp circuit is turned on for primary ultraviolet light disinfection after preset automatic lamp-on delay time, after the ultraviolet light disinfection is finished, the ultraviolet light disinfection lamp circuit is turned off and keeps the automatic mode, when the ultraviolet light disinfection lamp circuit enters the forced mode, the ultraviolet light disinfection lamp circuit is turned on automatically for primary ultraviolet light disinfection after the preset forced lamp-on delay time, and is switched to the automatic mode after the ultraviolet light disinfection is finished, and the ultraviolet light disinfection lamp circuit is not in the automatic mode or the forced mode, when the disinfection device is started for disinfection, the ultraviolet light is emitted and simultaneously an acousto-optic warning signal which can be sensed by a human body is emitted;
the ultraviolet light disinfection lamp circuit comprises a rectifying circuit, a power conversion circuit, an ultraviolet light tube, a voltage conversion circuit, a visible light detection circuit, an induction sensor, a microprocessor circuit, a drive control circuit and a warning circuit, wherein the rectifying current is used for accessing mains supply and converting accessed mains supply alternating current voltage into direct current voltage for output, the power conversion circuit is respectively connected with the rectifying circuit and the ultraviolet light tube, the power conversion circuit is accessed into the direct current voltage output by the rectifying circuit and converts the accessed direct current voltage into high-frequency alternating current for output to drive the ultraviolet light tube to emit light, the voltage conversion circuit is respectively connected with the rectifying circuit, the visible light detection circuit, the induction sensor, the microprocessor circuit and the warning circuit, and the voltage conversion circuit converts the direct current voltage output by the rectifying circuit into visible light which is respectively detected by the visible light The visible light detection circuit linearly converts received ambient light intensity signals into corresponding voltage signals, if the induction sensor detects an object, a level signal corresponding to the object is output, if the object is not detected, the level signal corresponding to no object is output, when the object passes through the sensing area of the induction sensor, the induction sensor outputs a pulse signal, the pulse width of the pulse signal is equal to the time length of the object staying in the sensing area of the induction sensor, if the pulse width of the pulse signal is less than a preset time threshold value, the pulse signal is defined as a narrow pulse, and the mode that the object corresponding to the pulse signal moves in the sensing area of the induction sensor is called rapid passing, if the pulse width of the pulse signal is greater than or equal to the preset time threshold, the pulse signal is defined as a wide pulse, the mode that an object corresponding to the pulse signal moves in the sensing area of the induction sensor is called slow passing, the warning circuit is connected with the microprocessor circuit and can send out warning signals which can be sensed by a human body under the control of the microprocessor circuit, the driving control circuit is respectively connected with the power conversion circuit and the microprocessor circuit, when the driving control circuit is connected with a light-on signal output by the microprocessor circuit, the driving control circuit controls the power conversion circuit to output corresponding current to drive the ultraviolet lamp tube to emit light, and when the driving control circuit is connected with a light-off signal output by the microprocessor circuit, the drive control circuit controls the power conversion circuit not to output current, at the moment, the ultraviolet lamp tube does not emit light, at the moment when the ultraviolet disinfection lamp circuit is just connected with commercial power, the drive control function controls the power conversion circuit to be started after a set time delay, so that the power conversion circuit can enter a working state after the microprocessor circuit is normal, the microprocessor circuit is connected with the ambient light detection circuit and is connected with a voltage signal which is output by the ambient light detection circuit and corresponds to the ambient light intensity, an ambient light threshold voltage is arranged in the microprocessor circuit, if the relationship between the voltage signal output by the ambient light detection circuit and the ambient light intensity is that the ambient light is stronger and the output voltage signal is larger, when the voltage signal output by the ambient light detection circuit connected with the microprocessor circuit is larger than or equal to the ambient light threshold voltage, considering the ambient light to be brighter, considering the ambient light to be darker when the voltage signal output by the ambient light detection circuit accessed by the microprocessor circuit is smaller than the ambient light threshold voltage, considering the ambient light to be darker if the relationship between the voltage signal output by the ambient light detection circuit and the ambient light intensity is that the ambient light is stronger and the output voltage signal is smaller, considering the ambient light to be darker when the voltage signal output by the ambient light detection circuit accessed by the microprocessor circuit is greater than or equal to the ambient light threshold voltage, considering the ambient light to be brighter when the voltage signal output by the ambient light detection circuit accessed by the microprocessor circuit is smaller than the ambient light threshold voltage, connecting the microprocessor circuit and the induction sensor, and setting a time threshold for judging narrow pulses and wide pulses in the microprocessor circuit, determining the passing mode of the object in the induction area of the induction sensor based on the judgment results of the narrow pulse and the wide pulse;
the microprocessor circuit has two control modes, one is a default mode, the other is a forced mode, under normal conditions, the microprocessor circuit is in the default mode, at the moment, the ultraviolet light disinfection lamp circuit is in the automatic mode, only when the microprocessor circuit receives that the pulse signal output by the induction sensor is a wide pulse, the microprocessor circuit can be switched to the one-time forced mode, the ultraviolet light disinfection lamp circuit enters the one-time forced mode, and when the lamp is turned off and the disinfection is stopped under the forced mode, the microprocessor circuit is switched to the default mode again, the default mode is a light control mode, when in the default mode, when the voltage signal output by the ambient light detection circuit received by the microprocessor circuit indicates that the ambient light is changed from brighter to darker, the microprocessor circuit delays the preset automatic lamp-on delay time, outputting a light-on signal, and entering one-time ultraviolet light disinfection under an automatic mode by the ultraviolet light disinfection lamp circuit, wherein if the time of outputting the light-on signal by the microprocessor circuit reaches the preset automatic light-on holding time and the voltage signal received by the microprocessor circuit and output by the ambient light detection circuit does not indicate that the ambient light is changed from darker to brighter or the microprocessor circuit does not receive the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal after the time of outputting the light-on signal reaches the preset automatic light-on holding time, and the current ultraviolet light disinfection is finished, and if the time of outputting the light-on signal by the microprocessor circuit reaches the preset automatic light-on holding time, the voltage signal received by the microprocessor circuit and output by the ambient light detection circuit indicates that the ambient light is changed from darker to brighter or brighter The microprocessor circuit receives the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal, the ultraviolet light disinfection is completed, at the moment, if the pulse signal output by the induction sensor is a wide pulse, the microprocessor circuit is switched to a forced mode, the microprocessor circuit outputs a light-on signal after delaying the preset forced light-on delay time, the ultraviolet light disinfection lamp circuit enters the ultraviolet light disinfection under the forced mode, at the moment, if the time of outputting the light-on signal by the microprocessor circuit reaches the preset forced light-on holding time, the microprocessor circuit does not receive the pulse signal output by the induction sensor again, and after the forced light-on holding time is reached, the microprocessor circuit outputs the light-off signal, the ultraviolet light disinfection is completed, the microprocessor circuit automatically switches to a default mode, if the time of the microprocessor circuit outputting a light-on signal reaches the preset forced light-on holding time, the microprocessor circuit receives the pulse signal output by the induction sensor again, the microprocessor circuit outputs a light-off signal, the ultraviolet light disinfection is completed, the microprocessor circuit automatically switches to the default mode, and the microprocessor circuit outputs a warning-on signal to the warning circuit while outputting the light-on signal no matter in the default mode or the forced mode, and the warning circuit sends out an acousto-optic warning signal when accessing the warning-on signal.
2. An ultraviolet light sterilizing lamp circuit as defined in claim 1, wherein said rectifying circuit has a live input, a neutral input, a positive output and a negative output, said power converting circuit has a positive terminal, a negative terminal, a first output, a second output, a third output, a fourth output, a first control terminal and a second control terminal, said ultraviolet lamp has four connecting ports, two pins at one end are the first input and the second input, respectively, two pins at the other end are the third input and the fourth input, said voltage converting circuit has a positive terminal, an output terminal and a negative terminal, said visible light detecting circuit has a positive terminal, a negative terminal, a first output and a second output, said induction sensor has a positive terminal, a negative terminal, a control terminal and an output terminal, said drive control circuit has a negative terminal, a positive terminal, a negative terminal, The warning circuit is provided with an anode, a cathode and a control end, the microprocessor circuit is provided with an anode, a cathode, a first light detection input end, a second light detection output end, a PWM output end, an infrared input end, a first output end and a second output end, the live wire input end of the rectifying circuit is used for being connected with a live wire of a mains supply, the zero wire input end of the rectifying circuit is used for being connected with a zero wire of the mains supply, the output end of the rectifying circuit, the anode of the power conversion circuit and the anode of the voltage conversion circuit are connected, the first output end of the power conversion circuit is connected with the first input end of the ultraviolet lamp tube, the second output end of the power conversion circuit is connected with the second input end of the ultraviolet lamp tube, and the third output end of the power conversion circuit is connected with the third input end of the ultraviolet lamp tube, the fourth output end of the power conversion circuit is connected with the fourth input end of the ultraviolet lamp tube, the first control end of the power conversion circuit is connected with the first output end of the drive control circuit, the second control end of the power conversion circuit is connected with the second output end of the drive control circuit, the output end of the voltage conversion circuit is respectively connected with the anode of the visible light detection circuit, the anode of the induction sensor, the anode of the microprocessor circuit and the anode of the warning circuit, the first output end of the microprocessor is connected with the control end of the drive control circuit, the second output end of the microprocessor circuit is connected with the control end of the warning circuit, and the first input end of the light detection of the microprocessor circuit is connected with the first output end of the visible light detection circuit, the second optical detection input end of the microprocessor circuit is connected with the second output end of the visible light detection circuit, the PWM output end of the microprocessor circuit is connected with the control end of the induction sensor, the infrared input end of the microprocessor is connected with the output end of the induction sensor, and the negative output end of the rectifying circuit, the negative electrode of the power conversion circuit, the negative electrode of the voltage conversion circuit, the negative electrode of the microprocessor circuit, the negative electrode of the visible light detection circuit, the negative electrode of the induction sensor, the negative electrode of the warning circuit and the negative electrode of the driving control circuit are connected.
3. A uv light sterilizing lamp circuit according to claim 2, wherein said driving control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a first transistor, a second transistor, a first diode and a second diode, said first capacitor is an electrolytic capacitor, said first diode is a rectifier diode, said second diode is a zener diode, one end of said first resistor is a control terminal of said driving control circuit, the other end of said first resistor is connected to a base of said first transistor, an emitter of said first transistor, a base of said second transistor and one end of said second resistor are connected, a collector of said second transistor is a first output terminal of said driving control circuit, a collector of said first transistor, a collector of said second transistor, a base of said second transistor, a second output terminal of said driving control circuit, a second output terminal of said first transistor, a collector of said second transistor, a first diode, a second diode, a, The negative pole of the first diode is connected with one end of the third resistor, the other end of the third resistor, the positive pole of the first capacitor and one end of the fourth resistor are connected, the other end of the fourth resistor is connected with the negative pole of the second diode, the positive pole of the first diode is connected with the positive pole of the second diode, the connecting end of the first diode is the second output end of the drive control circuit, and the other end of the second resistor, the emitting pole of the second triode and the negative pole of the first capacitor are connected, and the connecting end of the second resistor is the negative pole of the drive control circuit.
4. The UV sterilizer lamp circuit according to claim 2, wherein the visible light detection circuit comprises a phototransistor, a fifth resistor and a sixth resistor, a collector of the phototransistor is an anode of the visible light detection circuit, an emitter of the phototransistor is connected to one end of the fifth resistor and a connection end thereof is a first output end of the visible light detection circuit, another end of the fifth resistor is connected to one end of the sixth resistor and a connection end thereof is a second output end of the visible light detection circuit, and another end of the sixth resistor is a cathode of the visible light detection circuit.
5. The ultraviolet light disinfection lamp circuit as claimed in claim 2, wherein the inductive sensor comprises a seventh resistor, an eighth resistor, a second capacitor, a first LED, a first NMOS, and an infrared remote control receiver, the first LED is an infrared LED, the infrared remote control receiver is a universal household appliance remote control infrared remote control receiver, and has a positive electrode, a negative electrode, and a signal output pin, one end of the seventh resistor is connected to one end of the eighth resistor, and the connection end thereof is the positive electrode of the inductive sensor, the other end of the seventh resistor is connected to the positive electrode of the first LED, the negative electrode of the first LED is connected to the drain of the first NMOS, the gate of the first NMOS is the control end of the inductive sensor, and the other end of the eighth resistor, the control end of the inductive sensor, the second resistor, the third resistor, the fourth resistor, and the signal output pin, One end of the second capacitor is connected with the anode of the infrared remote control receiving head, the signal output pin of the infrared remote control receiving head is the output end of the induction sensor, the source electrode of the first NMOS tube, the other end of the second capacitor and the cathode of the infrared remote control receiving head are connected, and the connecting end of the first NMOS tube and the cathode of the second NMOS tube is the cathode of the induction sensor.
6. The ultraviolet light disinfection lamp circuit as claimed in claim 2, wherein the warning circuit comprises a ninth resistor, a second NMOS tube, a second LED and a buzzer, the second LED is an LED, one end of the ninth resistor is connected with the positive electrode of the buzzer, the connecting end of the ninth resistor is the positive electrode of the warning circuit, the other end of the ninth resistor is connected with the positive electrode of the second LED, the negative electrode of the second LED and the negative electrode of the buzzer are connected with the drain electrode of the second NMOS tube, the source electrode of the second NMOS tube is the negative electrode of the warning circuit, and the gate electrode of the second NMOS tube is the control end of the warning circuit.
7. A UV light sterilizing lamp circuit according to claim 2, characterized in that said power conversion circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a third diode, a fourth diode, a fifth diode, a first diac, a third triode, a fourth triode, a first inductor and a first pulse transformer, said third capacitor is an electrolytic capacitor, said third diode, said fourth diode and said fifth diode are rectifier diodes, said first pulse transformer comprises a primary coil and two secondary coils, said primary coil of said first pulse transformer is referred to as a first coil, said two secondary coils of said first pulse transformer are referred to as a second coil and a third coil respectively, the positive electrode of the third capacitor, the collector of the third triode, the negative electrode of the fourth diode, one end of the fifteenth resistor and one end of the fifth capacitor are connected, the connection end of the fifteenth resistor and one end of the fifth capacitor is the positive electrode of the power conversion circuit, and the connection end of the fifteenth resistor and the positive electrode of the fourth diode, the negative electrode of the fifth diode, one end of the first coil, the collector of the fourth triode, one end of the thirteenth resistor, one end of the tenth resistor, the negative electrode of the third diode and one end of the second coil are connected, the other end of the second coil is connected with one end of the eleventh resistor, and the other end of the eleventh resistor is connected with the base of the third triode, the emitter of the third triode is connected with the other end of the thirteenth resistor, the other end of the tenth resistor, the anode of the third diode, one end of the fourth capacitor and one end of the first diac are connected, the connection end of the tenth resistor is the second control end of the power conversion circuit, the other end of the first diac, one end of the third coil and one end of the twelfth resistor are connected, the other end of the twelfth resistor and the base of the fourth triode are connected, the connection end of the twelfth resistor and one end of the base of the fourth triode are the first control end of the power conversion circuit, the emitter of the fourth triode and one end of the fourteenth resistor are connected, the cathode of the third capacitor, the other end of the fourth capacitor, the other end of the third coil, the other end of the fourteenth resistor and the anode of the fifth diode are connected, and the connection end of the fourteenth resistor and one end of the fourteenth resistor are connected The other end of the first coil is connected with one end of the first inductor, the other end of the first inductor is connected with one end of the sixth capacitor, the other end of the sixth capacitor is a fourth output end of the power conversion circuit, one end of the seventh capacitor is a second output end of the power conversion circuit, and the other end of the seventh capacitor is a third output end of the power conversion circuit.
8. The UV sterilizer lamp circuit according to claim 2, wherein said power conversion circuit comprises a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixth diode, a seventh diode, an eighth diode, a ninth diode, a twelfth diode, an eleventh diode, a twelfth diode, a second diode, a fifth triode, a sixth triode, a second pulse transformer and a second inductor, wherein said fourteenth capacitor and said fifteenth capacitor are electrolytic capacitors, and said sixth diode, said seventh diode, said eighth diode, said ninth diode, said fourteenth diode, said second pulse transformer and said second inductor are electrolytic capacitors, The twelfth diode, the eleventh diode and the twelfth diode are all rectifier diodes, the second pulse transformer includes a primary coil and two secondary coils, the primary coil of the second pulse transformer is referred to as a fourth coil, the two secondary coils of the second pulse transformer are referred to as a fifth coil and a sixth coil, respectively, one end of the eighth capacitor, the collector of the fifth triode, the cathode of the seventh diode, one end of the twenty-first resistor, one end of the tenth capacitor, one end of the twelfth capacitor, the anode of the fourteenth capacitor and the cathode of the twelfth diode are connected, and the connection end is the anode of the power conversion circuit; the other end of the tenth capacitor, the other end of the twenty-first resistor, one end of the fourth coil, the anode of the seventh diode, the cathode of the eighth diode, one end of the nineteenth resistor, the collector of the sixth triode, the cathode of the sixth diode, one end of the sixteenth resistor and one end of the fifth coil are connected, the other end of the fifth coil is connected with one end of the seventeenth resistor, the other end of the seventeenth resistor is connected with the base of the fifth triode, and the emitter of the fifth triode is connected with the other end of the nineteenth resistor; the other end of the sixteenth resistor, the anode of the sixth diode, one end of the second bidirectional trigger diode and one end of the ninth capacitor are connected, and the connection end of the second bidirectional trigger diode is the second control end of the power conversion circuit; the other end of the second bidirectional trigger diode and one end of the sixth coil are connected with one end of the eighteenth resistor, the other end of the eighteenth resistor is connected with the base electrode of the sixth triode, and the connecting end of the eighteenth resistor is the first control end of the power conversion circuit; an emitting electrode of the sixth triode is connected with one end of the twentieth resistor, the other end of the fourth coil is connected with one end of the second inductor, and the other end of the second inductor is a first output end of the power conversion circuit; one end of the eleventh capacitor is a second output end of the power conversion circuit, the other end of the eleventh capacitor is a third output end of the power conversion circuit, the other end of the twelfth capacitor, one end of the thirteenth capacitor, and the cathode of the ninth diode are connected with the anode of the twelfth diode, and the connection end thereof is a fourth output end of the power conversion circuit, the anode of the ninth diode, the cathode of the fourteenth capacitor are connected with the cathode of the eleventh diode, and the cathode of the twelfth diode, the anode of the twelfth diode are connected with the anode of the fifteenth capacitor; the other end of the eighth capacitor, the other end of the ninth capacitor, the other end of the twentieth resistor, the anode of the eighth diode, the other end of the sixth coil, the other end of the thirteenth capacitor, the anode of the eleventh diode and the cathode of the fifteenth capacitor are connected, and the connection end is the cathode of the power conversion circuit.
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