CN114306671A - Dual-wavelength ultraviolet disinfection method and dual-wavelength integrated ultraviolet disinfector - Google Patents
Dual-wavelength ultraviolet disinfection method and dual-wavelength integrated ultraviolet disinfector Download PDFInfo
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 41
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- 238000002474 experimental method Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention discloses a dual-wavelength ultraviolet disinfection method and a dual-wavelength integrated ultraviolet disinfector, wherein the dual-wavelength ultraviolet disinfection method comprises the following steps: detecting whether a person is in the environmental space; when a person is present, controlling the first lamp tube to operate, wherein the first lamp tube is used for emitting disinfection ultraviolet rays capable of irradiating the human body; when no person is present, whether the person is continuously present within the preset time is judged, if yes, the second lamp tube is controlled to operate, and if not, the first lamp tube is controlled to operate, wherein the second lamp tube is used for emitting the disinfection ultraviolet rays which can not irradiate the human body. By using the dual-wavelength ultraviolet disinfection method provided by the invention, human-computer coexistence of the ultraviolet disinfection lamp can be realized.
Description
Technical Field
The invention relates to the technical field of ultraviolet disinfection, in particular to a dual-wavelength ultraviolet disinfection method, and further relates to a dual-wavelength integrated ultraviolet disinfector applied to the dual-wavelength ultraviolet disinfection method.
Background
In the prior art, ultraviolet disinfection lamps, which are devices using ultraviolet rays emitted from mercury lamps, are generally used for disinfection. The ultraviolet disinfection lamp can radiate ultraviolet rays with the wavelength of 254nm outwards, the sterilizing capability of the ultraviolet rays with the wavelength is the strongest, and the ultraviolet rays with the wavelength can harm human bodies, so the ultraviolet disinfection lamp is usually used in an unmanned environment all the time and can be used for sterilizing water, air, clothes and the like. The ultraviolet disinfection lamp can purify and kill clothes and air, and under the condition that no chemical disinfectant is added, the ultraviolet disinfection lamp irradiates to realize disinfection and sterilization, so that the clothes to be killed and the bacteria and viruses in the air can be killed and killed cleanly in a short time, zero-pollution efficient killing is realized, the operation is simple and convenient, and the applicability is strong.
However, since the ultraviolet ray with the wavelength of 254nm is harmful to human bodies, the device can only be carried out in a fixed unmanned environment, and coexistence of human and machine is not realized, so that the ultraviolet disinfection lamp cannot be used for sterilization and disinfection in public places.
In summary, how to realize human-computer coexistence of the ultraviolet disinfection lamp is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a dual wavelength ultraviolet disinfection method, which can realize human-machine coexistence of ultraviolet disinfection lamps.
Another object of the present invention is to provide a dual wavelength integrated uv sterilizer applied to the above dual wavelength uv sterilization method.
In order to achieve the above purpose, the invention provides the following technical scheme:
a dual wavelength uv disinfection method comprising:
detecting whether a person is in the environmental space;
when a person is present, controlling a first lamp tube to operate, wherein the first lamp tube is used for emitting disinfection ultraviolet rays capable of irradiating the human body;
when no person is present, whether the person is continuously present within the preset time is judged, if yes, the second lamp tube is controlled to operate, and if not, the first lamp tube is controlled to operate, wherein the second lamp tube is used for emitting the sterilizing ultraviolet rays which can not irradiate the human body.
Preferably, before detecting whether there is a person in the environmental space, the method further includes:
and judging whether the actual service life of the first lamp tube exceeds the rated time length, if so, replacing the first lamp tube, clearing the storage time length of the first lamp tube, and timing again.
Preferably, the detecting whether there is a person in the environmental space includes:
and detecting whether a person exists in the environment space by using a pyroelectric infrared sensor or a human body infrared sensor.
Preferably, the pyroelectric infrared sensor is provided with a Fresnel lens in a matching manner, so that the detection range of the pyroelectric infrared sensor is adjusted according to the type of the Fresnel lens.
Preferably, the irradiation wavelength of the first lamp tube is 222nm, and the irradiation wavelength of the second lamp tube is 254 nm.
Preferably, when there is a person, after controlling the first lamp to operate, the method further includes:
starting timing after the first lamp tube operates;
and when the timing duration is greater than or equal to the preset duration of the first lamp tube, controlling the first lamp tube to stop running.
A dual wavelength integrated uv sterilizer for carrying out the dual wavelength uv sterilization method of any one of the above, the dual wavelength integrated uv sterilizer comprising: the device comprises a detection device for detecting whether a person exists in an environmental space, an ultraviolet lamp tube, a frame for mounting the ultraviolet lamp tube and a control device;
the ultraviolet lamp tube comprises a first lamp tube and a second lamp tube which can respectively irradiate disinfection ultraviolet rays with different wavelengths, the first lamp tube can irradiate a human body, the second lamp tube can not irradiate the human body, the detection device and the control device are arranged on the frame, and the detection device and the ultraviolet lamp tube are connected with the control device;
the control device is used for controlling the first lamp tube to operate when people exist and controlling the second lamp tube to operate when no people continuously move in preset time.
Preferably, the frame comprises a base and a top seat arranged in parallel with the base, and the ultraviolet lamp tube is arranged between the base and the top seat.
Preferably, a sliding cover and a lifting handle are arranged above the top seat, the sliding cover is used for covering the top seat, the lifting handle is distributed in an inverted U shape and is connected with two sides of the top seat.
Preferably, the ultraviolet lamp tube comprises three first lamp tubes and three second lamp tubes, and the first lamp tubes and the second lamp tubes are sequentially installed in the frame in a staggered manner.
When the dual-wavelength ultraviolet disinfection method provided by the invention is used, when a person is detected in the environmental space, the first lamp tube can be controlled to operate, so that the first lamp tube irradiates disinfection ultraviolet rays which do not harm the human body, and the disinfection operation is carried out on the spatial environment. When no person moves in the environmental space within the preset time, the second lamp tube can be controlled to operate so as to improve the sterilization and disinfection effect of the lamp tube on the environmental space, and when a person is in the preset time, the first lamp tube is continuously controlled to operate so as to avoid harm to a human body. Therefore, the method can realize man-machine coexistence, and can automatically sterilize and disinfect the environmental space under the conditions of no personnel operation and no harm to patients.
In conclusion, by using the dual-wavelength ultraviolet disinfection method provided by the invention, human-computer coexistence of the ultraviolet disinfection lamp can be realized.
In addition, the invention also provides a dual-wavelength integrated ultraviolet sterilizer applied to the dual-wavelength ultraviolet sterilization method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic flow chart of a dual wavelength UV disinfection method provided by the present invention;
FIG. 2 is a schematic structural diagram of a dual wavelength integrated UV sterilizer provided in the present invention;
FIG. 3 is a schematic flow diagram of the dual wavelength integrated UV sterilizer in automatic mode;
fig. 4 is a timing diagram of the dual wavelength integrated uv sterilizer in a timed mode.
In fig. 1-4:
the lamp comprises a base 1, an indicator light 2, a pyroelectric infrared sensor 3, a key 4, a handle 5, a display device 6, a first lamp tube 7, a second lamp tube 8, a sliding cover 9, a top seat 10, a frame 11 and an ultraviolet lamp tube 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a dual-wavelength ultraviolet disinfection method, which can realize human-computer coexistence of ultraviolet disinfection lamps. The other core of the invention is to provide a dual-wavelength integrated ultraviolet sterilizer applied to the dual-wavelength ultraviolet sterilization method.
Referring to fig. 1 to 4, fig. 1 is a schematic flow chart of a dual wavelength uv disinfection method provided by the present invention; FIG. 2 is a schematic structural diagram of a dual wavelength integrated UV sterilizer provided in the present invention; FIG. 3 is a schematic flow diagram of the dual wavelength integrated UV sterilizer in automatic mode;
fig. 4 is a timing diagram of the dual wavelength integrated uv sterilizer in a timed mode.
The specific embodiment provides a dual-wavelength ultraviolet disinfection method, which comprises the following steps:
step S1: detecting whether a person is in the environmental space;
step S2: when a person is present, the first lamp tube 7 is controlled to operate, wherein the first lamp tube 7 is used for emitting disinfection ultraviolet rays capable of irradiating the human body; when nobody, judge whether continuous nobody moves in the predetermined time, if yes, control second fluorescent tube 8 to operate, if no, control first fluorescent tube 7 to operate, wherein, second fluorescent tube 8 is used for launching the disinfection ultraviolet ray that can not shine the human body.
It should be noted that, the method can selectively control the operation of different lamp tubes according to whether people move in the environmental space, and the lamp tubes can emit disinfection ultraviolet rays with different wavelengths, so that the disinfection range is effectively widened, the environment is disinfected and sterilized more efficiently, human-computer coexistence is better realized, and the purpose of automatically disinfecting and sterilizing the environment is realized under the conditions of no personnel operation and no harm to the personnel.
When the dual-wavelength ultraviolet disinfection method provided by the invention is used, when a person is detected in the environmental space, the first lamp tube 7 can be controlled to operate, so that the first lamp tube 7 irradiates disinfection ultraviolet rays which are harmless to the human body, and the disinfection operation is carried out on the spatial environment. When no person moves in the environmental space within the preset time, the second lamp tube 8 can be controlled to operate so as to improve the sterilization and disinfection effect of the lamp tube on the environmental space, and when a person is in the preset time, the first lamp tube 7 is continuously controlled to operate so as to avoid the injury to the human body. Therefore, the method can realize man-machine coexistence, and can automatically sterilize and disinfect the environmental space under the conditions of no personnel operation and no harm to patients.
In conclusion, by using the dual-wavelength ultraviolet disinfection method provided by the invention, human-computer coexistence of the ultraviolet disinfection lamp can be realized.
On the basis of the above embodiment, it is preferable that before detecting whether there is a person in the environmental space, the method further includes:
and judging whether the actual service life of the first lamp tube 7 exceeds the rated time length, if so, replacing the first lamp tube 7, clearing the storage time length of the first lamp tube 7 and timing again.
It should be noted that, when the first lamp 7 is controlled to operate, the accumulated time length stored in the first lamp 7 needs to be read and compared with the rated time length of the first lamp 7, and if the accumulated time length exceeds the rated time length of the first lamp 7, the user is prompted that the first lamp 7 needs to be replaced. If the nominal duration of the first lamp 7 is not reached, the first lamp 7 can be used continuously.
Preferably, the detecting whether there is a person in the environmental space includes: whether a person is in the environmental space is detected by using the pyroelectric infrared sensor 3 or the human body infrared sensor.
It should be noted that a human body detection sensitive element is integrated in the pyroelectric infrared sensor 3, the human body detection sensitive element can couple the sensed human body movement signal to a digital intelligent integrated circuit chip through a high-impedance differential input circuit, the digital intelligent integrated circuit can convert the human body movement signal into a 15-bit ADC digital signal, and when the signal of the pyroelectric infrared sensor 3 exceeds a selected digital threshold value, a timed level signal is output. When the pyroelectric infrared signal received by the human body detection sensitive element exceeds the trigger threshold value in the human body detection sensitive element, a counting pulse is generated in the human body detection sensitive element. When the human body detection sensitive element receives the signal again, the human body detection sensitive element can think that the second pulse is received, once a plurality of pulses are received in a short time, the human body detection sensitive element can generate an alarm signal, and meanwhile, the REL pin can be triggered at a high level. For the multiple-shot case, the hold time of the output level will be clocked from the last active pulse.
It should also be noted that the pyroelectric infrared sensor 3 may be replaced by a human body infrared sensor. The ultraviolet lamp tube 12 can support an infrared remote control mode to carry out remote control, and can also control the ultraviolet disinfection lamp to work within the range of 8-10m, so that the disinfection and sterilization operation of the environment can be firstly carried out, and in a sterile environment, ultraviolet radiation with the wavelength of 222nm is used for inactivating germs for a patient.
Experiments prove that as long as a person is in the detection range of the pyroelectric infrared sensor 3, when the human body has slight actions, such as shaking the head, operating equipment and the like, the pyroelectric infrared sensor 3 can detect the human body even if the human body does not move. In addition, the above-mentioned judgment of whether the person is continuously inactive within the predetermined time means that the timing is started when the pyroelectric infrared sensor 3 detects that no person exists, and the person is always inactive after N minutes, and then the second lamp tube 8 can be controlled to operate, so as to ensure that the person is not damaged by ultraviolet rays.
It should be added that the maximum effective irradiation distance range of the ultraviolet lamp is 3-5 m, the detection distance of the pyroelectric infrared sensor 3 can reach 12m, and the second lamp tube 8 can be closed in the irradiation range of the person who does not enter the ultraviolet lamp, so as to avoid the injury to the human body. The first lamp tube 7 will continue to work, and the second lamp tube 8 will not be opened within a preset time after detecting that a person is present in the environmental space, so as to avoid causing harm to the human body.
Preferentially, the pyroelectric infrared sensor 3 is provided with the Fresnel lens in a matched manner, so that the detection range of the pyroelectric infrared sensor 3 is adjusted according to the model of the Fresnel lens, the detection effect of the pyroelectric infrared sensor 3 is ensured, and the human body is prevented from being accidentally injured.
Preferably, the first lamp 7 irradiates at a wavelength of 222nm and the second lamp 8 irradiates at a wavelength of 254 nm. The first lamp tube 7 can directly irradiate the human body and cannot cause damage to the human body, the second lamp tube 8 cannot directly irradiate the human body, but the second lamp tube 8 has stronger disinfection and sterilization effects, and the improvement of the disinfection and sterilization efficiency of the lamp tubes is facilitated.
Preferably, when there is a person, after controlling the first lamp 7 to operate, the method further includes:
the first lamp tube 7 starts to time after running;
and when the timing duration is greater than or equal to the preset duration of the first lamp tube 7, controlling the first lamp tube 7 to stop running.
It should be noted that the first lamp 7 and the second lamp 8 both belong to the ultraviolet lamp 12, and the operation mode of the ultraviolet lamp 12 includes an automatic mode and a timing mode, and the operation mode can be switched by a human-computer interaction device. When the equipment is powered on, the control device initializes the hardware, reads the accumulated time length stored in the first lamp tube 7, compares the accumulated time length with the rated time length of the first lamp tube 7, and if the accumulated time length exceeds the rated time length, the digital display device 6 displays the FFFF to prompt a user that the first lamp tube 7 needs to be replaced. If the rated time length is not reached, mode selection can be carried out. The automatic mode is selected by default, and the time cannot be adjusted. And in the timing mode, the preset time length needs to be set in advance, otherwise, the equipment cannot run. The treatment output is normally started by operating the start-stop button.
It should be noted that when the ultraviolet lamp 12 is in the automatic mode, the digital display device 6 can display the usage time of the first lamp 7 in a timing manner. During the use period of the first lamp tube 7, the logic control part can control the working states of the first lamp tube 7 and the second lamp tube 8 according to the feedback signal of the pyroelectric infrared sensor 3. When the ultraviolet lamp 12 is in the timing mode, the use time of the first lamp 7 can be set in advance through the human-computer interaction device, and the digital display device 6 can count down to display the remaining use time of the first lamp 7. When the first lamp tube 7 is used, the logic control part can close the first lamp tube 7.
In addition, it should be noted that the default of the ultraviolet lamp 12 is the automatic mode, and the automatic mode indicator light and the power indicator light are always on to display the current status of the device when the device is powered on in the default status. Then, the man-machine interaction can be carried out through the key 4, the operation mode is changed, the operation such as starting and stopping equipment is carried out, and the digital display device 6 and the indicating lamp 2 can carry out corresponding display change. After the device is operated, the service life of the first lamp tube 7 can be recorded once every 5 minutes and stored in the storage device. When the device starts to initialize each time, the accumulated time length stored before can be read by the storage device and is compared with the rated time length of the first lamp tube 7, if the rated time length is exceeded, the digital display device 6 can display FFFF to prompt a user that the first lamp tube 7 needs to be replaced, and at the moment, the operation on the ultraviolet device is invalid. After the first lamp tube 7 is replaced, the storage time length of the first lamp tube 7 can be cleared through the operation of the specific key 4. Before the treatment operation, the user can check the accumulated time length of the first lamp tube 7, and the digital display device 6 displays the accumulated time length through the operation of the specific key 4.
In the automatic mode, the control device controls the working states of the first lamp tube 7 and the second lamp tube 8 according to the feedback signal of the pyroelectric infrared sensor 3. In an unmanned environment, the first lamp tube 7 and the second lamp tube 8 can normally operate to efficiently sterilize the environment where the equipment is located. When it is detected that a person moves in the equipment environment, the second lamp 8 can be directly closed, and the closing action of the second lamp 8 can be completed within millisecond level, so that the operation is very quick. The control operation of the ultraviolet lamp 12 is performed by loop detection, and one loop can be completed within 50 ms.
In the timing mode, the operator can set or adjust the treatment time of the ultraviolet lamp 12 in advance, the minimum time is 1 minute, and the maximum time can be 9999 minutes, that is, the specific operation time of the first lamp 7 can be set according to the specific condition of the patient. The digital display device 6 can count down to display the remaining treatment time of the first lamp tube 7, and after the treatment time is over, the first lamp tube 7 can be closed. During the operation of the first lamp tube 7, the control device controls the working states of the first lamp tube 7 and the second lamp tube 8 according to the feedback signal of the pyroelectric infrared sensor 3.
The present application provides a dual wavelength integrated ultraviolet sterilizer for performing the dual wavelength ultraviolet sterilization method of any one of the above, in addition to a dual wavelength ultraviolet sterilization method, the dual wavelength integrated ultraviolet sterilizer including: the device comprises a detection device for detecting whether a person is in an environment space, an ultraviolet lamp tube 12, a frame 11 for installing the ultraviolet lamp tube 12 and a control device; the ultraviolet lamp tube 12 comprises a first lamp tube 7 and a second lamp tube 8 which can respectively irradiate disinfection ultraviolet rays with different wavelengths, the first lamp tube 7 can irradiate a human body, the second lamp tube 8 can not irradiate the human body, the detection device and the control device are both arranged on the frame 11, and the detection device and the ultraviolet lamp tube 12 are both connected with the control device; the control device is used for controlling the first lamp tube 7 to operate when people exist and controlling the second lamp tube 8 to operate when no people move continuously in preset time.
In the actual application process, the shapes, structures, sizes, materials, positions and the like of the detection device, the frame 11, the ultraviolet lamp tube 12 and the control device can be determined according to actual conditions and actual requirements.
It should be noted that the control device may include a power input device, a 24V power device, a digital display device 6, a human-computer interaction device, an equipment status indication device, an ultraviolet lamp output device, a storage device, and a logic control element; the power input device, the 24V power device, the digital display device 6, the human-computer interaction device, the equipment state indicating device, the ultraviolet lamp output device, the storage device and the detection device are all connected with the logic control piece;
the power input device is used for providing power input for the second lamp tube 8, can be externally connected with 220V power input, and controls the power supply of equipment through a physical switch; the 24V power supply device is used for providing power supply input for the first lamp tube 7, and 24V input power supply can be obtained through the 220V voltage conversion device; the digital display device 6 is used for displaying the service life of the first lamp tube 7; the man-machine interaction device is used for controlling the running state of the equipment and can respectively carry out time setting, mode selection and start-stop operation through 3 keys 4; the equipment state indicating device is used for reflecting the current running state of the equipment by controlling the state of the LED lamp; the ultraviolet lamp output device is used for controlling the working states of the first lamp tube 7 and the second lamp tube 8 according to the signal of the pyroelectric infrared sensor 3; the storage means is used to store the length of time of use of the first lamp 7.
The device status indicating means may comprise a plurality of indicator lights 2, for example a timing mode indicator light may be provided above the left side of the frame 11, an automatic mode indicator light may be provided below the left side of the frame 11, an operation indicator light may be provided above the right side of the frame 11, and a power indicator light may be provided below the right side of the frame 11. The human-computer interaction device may comprise a plurality of keys 4, including for example a start/stop key, a time adjustment key, a mode adjustment key, etc.
Preferably, the frame 11 includes a base 1 and a top seat 10 for being arranged in parallel with the base 1, and the ultraviolet lamp 12 is disposed between the base 1 and the top seat 10, so as to effectively simplify the overall structure of the device.
Preferably, a sliding cover 9 and a lifting handle 5 are arranged above the top base 10, the sliding cover 9 is used for covering the top base 10, the lifting handle 5 is distributed in an inverted U shape, and the lifting handle 5 is connected with two sides of the top base 10, so that the ultraviolet lamp tube 12 can be moved in space by the portable frame 11.
Preferably, the ultraviolet lamp 12 includes three first lamps 7 and three second lamps 8, and the first lamps 7 and the second lamps 8 are sequentially installed in the frame 11 in a staggered manner, so that the ultraviolet lamp 12 can sufficiently irradiate the ambient space for sterilization and disinfection.
To further illustrate the dual-wavelength uv disinfection method and the dual-wavelength integrated uv disinfector provided by the present invention, the following description will be given to illustrate the operation of the dual-wavelength integrated uv disinfector.
The specific control flow of the control device is as follows:
firstly, a pin GPIO1 of a control device is connected with a second lamp tube 8 capable of emitting ultraviolet rays with a wavelength of 254nm through a solid state relay SSR1, a pin GPIO2 of the control device is connected with a first lamp tube 7 capable of emitting ultraviolet rays with a wavelength of 222nm through a solid state relay SSR2, and a pin GPIO3 of the control device is connected with a signal output pin of a pyroelectric infrared sensor 3;
and secondly, when the equipment is powered on, the control device initializes the hardware, reads the accumulated time length stored in the storage device, and compares the accumulated time length with the rated time length of the first lamp tube 7, if the accumulated time length exceeds the rated time length of the first lamp tube 7, the nixie tube of the digital display device 6 displays FFFF so as to prompt a user that the first lamp tube 7 needs to be replaced. If the rated time of the first lamp tube 7 is not reached, mode selection can be carried out, an automatic mode is defaulted, and the time cannot be adjusted. The preset duration needs to be set in the timing mode, otherwise the device will not operate. And then the treatment output is normally started by operating the start-stop button.
And thirdly, outputting treatment according to the mode selection:
(1) automatic mode: when the device is in the automatic mode, the flow chart is as shown in fig. 3, the automatic mode indicator lamp is normally on, and the timing mode indicator lamp is off. The running time is not adjustable, and the nixie tube can positively display the running time in minutes. In the automatic mode, the first lamp tube 7 and the second lamp tube 8 can work, after the treatment is started, the operation indicator lamp is normally on, the pyroelectric infrared sensor 3 circularly detects and feeds back a signal of the pyroelectric infrared sensor 3 to the control device, the control device circularly reads the signal of the pyroelectric infrared sensor 3, and the logic control part can carry out output control on the ultraviolet lamp tube 12 according to the feedback signal. After pyroelectric infrared sensor 3 detected someone, the operation pilot lamp can flash, and the suggestion user has closed the output of second fluorescent tube 8 because of the detection of someone of pyroelectric infrared sensor 3 module, and not the trouble arouses. When the pyroelectric infrared sensor 3 detects that no person exists in the preset time, the operation indicating lamp is in a normally-on state.
When the pyroelectric infrared sensor 3 detects that someone moves in the environmental space, a high level can be output to the control device, the GIPO1 outputs a low level, the SSR1 is closed, the second lamp tube 8 stops working, the GIPO2 outputs a high level, the SSR2 is opened, the first lamp tube 7 works, and therefore the second lamp tube 8 is prevented from emitting 254nm wavelength ultraviolet rays to cause damage to a human body.
When pyroelectric infrared sensor 3 detects that no person moves in the environment, exportable low level reaches controlling means, controlling means starts the timer timing N minutes, no longer open second fluorescent tube 8 in N minutes, if personnel move in N minutes, then close the timer zero clearing, if no person moves, then begin the timing when detecting someone exists at last time, N minute back is opening second fluorescent tube 8, in order to carry out efficient disinfection operation to the environmental space, with ultraviolet tube 12 simultaneous workings of realization dual wavelength.
(2) Timing mode: when the device is in the timing mode, the flow chart is as shown in fig. 4, the timing mode indicator lamp is normally on, the automatic mode indicator lamp is off, and the current running state of the device is indicated. The first lamp tube 7 and the second lamp tube 8 can work normally, specific running time can be set according to the use environment, the control device can control the working states of the first lamp tube 7 and the second lamp tube 8 according to feedback signals of the pyroelectric infrared sensor 3, and the specific control logic is consistent with the control logic of the automatic mode. The nixie tube counts down to display the remaining treatment time. After the treatment time is over, the output of the first lamp tube 7 and the second lamp tube 8 can be automatically closed, and the buzzer can alarm and whistle for prompting.
It should be noted that the first lamp tube 7 and the second lamp tube 8 are mentioned in the present application, wherein the first and the second are only for distinguishing the position difference and are not sequentially distinguished.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The dual wavelength ultraviolet ray sterilization method and the dual wavelength integrated ultraviolet ray sterilizer provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A dual wavelength uv disinfection method, comprising:
detecting whether a person is in the environmental space;
when a person is present, controlling a first lamp tube (7) to operate, wherein the first lamp tube (7) is used for emitting disinfection ultraviolet rays capable of irradiating the human body;
when no person is present, whether the person is continuously present within a preset time is judged, if yes, the second lamp tube (8) is controlled to operate, and if not, the first lamp tube (7) is controlled to operate, wherein the second lamp tube (8) is used for emitting disinfection ultraviolet rays which cannot irradiate the human body.
2. The dual wavelength uv disinfection method of claim 1, wherein said detecting a presence of a person in an environmental space further comprises:
and judging whether the actual service life of the first lamp tube (7) exceeds the rated time length, if so, replacing the first lamp tube (7), clearing the storage time length of the first lamp tube (7), and timing again.
3. The dual wavelength uv disinfection method of claim 1 wherein said detecting the presence of a person in an environmental space comprises:
and detecting whether a person exists in the environment space by using a pyroelectric infrared sensor (3) or a human body infrared sensor.
4. The dual-wavelength ultraviolet disinfection method as claimed in claim 3, characterized in that said pyroelectric infrared sensor (3) is equipped with a Fresnel lens to adjust the detection range of said pyroelectric infrared sensor (3) according to the model of said Fresnel lens.
5. The dual wavelength uv disinfection method of claim 1, wherein said first lamp (7) is illuminated at a wavelength of 222nm and said second lamp (8) is illuminated at a wavelength of 254 nm.
6. The dual wavelength uv sterilization method as claimed in claim 1, wherein said controlling the first lamp (7) to operate when there is a person further comprises:
the first lamp tube (7) starts to time after running;
and when the timing duration is greater than or equal to the preset duration of the first lamp tube (7), controlling the first lamp tube (7) to stop running.
7. A dual wavelength integrated uv sterilizer for performing the dual wavelength uv sterilization method of any one of claims 1 to 6, comprising: the device comprises a detection device for detecting whether a person is in an environment space, an ultraviolet lamp tube (12), a frame (11) for installing the ultraviolet lamp tube (12) and a control device;
the ultraviolet lamp tube (12) comprises a first lamp tube (7) and a second lamp tube (8) which can respectively irradiate disinfection ultraviolet rays with different wavelengths, the first lamp tube (7) can irradiate a human body, the second lamp tube (8) can not irradiate the human body, the detection device and the control device are both arranged on the frame (11), and the detection device and the ultraviolet lamp tube (12) are both connected with the control device;
the control device is used for controlling the first lamp tube (7) to operate when people are in the first lamp tube, and controlling the second lamp tube (8) to operate when no people are in the second lamp tube for a preset time.
8. The dual wavelength integrated uv sterilizer of claim 7, wherein said frame (11) comprises a base (1) and a top seat (10) for being arranged in parallel with said base (1), said uv lamp tube (12) being arranged between said base (1) and said top seat (10).
9. The dual wavelength integrated uv disinfector according to claim 8, wherein a sliding cover (9) and a handle (5) are provided above the top seat (10), the sliding cover (9) is used to cover the top seat (10), the handle (5) is in an inverted U-shape, and the handle (5) is connected to both sides of the top seat (10).
10. The dual wavelength integrated uv disinfector according to claim 7, wherein said uv lamps (12) comprise three of said first lamps (7) and three of said second lamps (8), and said first lamps (7) and said second lamps (8) are installed in said frame (11) in a staggered manner in sequence.
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| CN114306671B (en) | 2023-12-01 |
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