CN115317652B - Suspended ceiling type ultraviolet sterilizer and control method thereof - Google Patents
Suspended ceiling type ultraviolet sterilizer and control method thereof Download PDFInfo
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- CN115317652B CN115317652B CN202210961038.XA CN202210961038A CN115317652B CN 115317652 B CN115317652 B CN 115317652B CN 202210961038 A CN202210961038 A CN 202210961038A CN 115317652 B CN115317652 B CN 115317652B
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 118
- 238000001514 detection method Methods 0.000 claims abstract description 95
- 230000001954 sterilising effect Effects 0.000 claims description 31
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008832 photodamage Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 241000700605 Viruses Species 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- A61L2/24—Apparatus using programmed or automatic operation
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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—Ultraviolet radiation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
-
- 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)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses a ceiling type ultraviolet sterilizer and a control method thereof, wherein the control method comprises the following steps: if no person exists in the environment, the ultraviolet disinfection device starts to work, and the control device records the real-time working time length of the ultraviolet disinfection device; in a preset first working time period, if personnel appear in the environment, the ultraviolet disinfection device stops working, and the control device records the working time period of the ultraviolet disinfection device; when the personnel leave the environment, the control device can control the ultraviolet disinfection device to continue to perform the disinfection work on the basis of the original working time according to the personnel stay time until the time for the ultraviolet disinfection device to execute the disinfection task is consistent with the preset first working time; according to the control method disclosed by the application, the human body detection unit is adopted to detect whether personnel exist in the environment, so that the problem that ultraviolet light damages human bodies is effectively avoided; and when the residence time of the personnel is less than the preset residence time, the ultraviolet disinfection device continues to disinfect on the original basis, so that the working energy consumption can be reduced.
Description
Technical Field
The invention relates to the technical field of ultraviolet disinfection equipment, in particular to a ceiling type ultraviolet sterilizer and a control method thereof.
Background
At present, people have higher and higher requirements on life quality, and most public places or families adopt air disinfection equipment or air purification equipment to remove dust, disinfect or remove peculiar smell everywhere in the living environment so as to improve the cleanliness of the environment, thereby improving the comfort level of the environment.
The common air sterilizing device is a box-type or cabinet-type sterilizing cabinet which can be placed at any position on the ground to sterilize the space in a targeted manner or arranged on a wall to sterilize the whole large space, and most of sterilizing modes adopt ultraviolet light or ultraviolet lamps for sterilizing; when the indoor space needs to be disinfected, the indoor environment is ensured to be unmanned, and the ultraviolet light is prevented from directly irradiating the human body to cause certain damage to the human body.
At present, before ultraviolet disinfection is carried out on a space, whether an indoor personnel opening an ultraviolet disinfection device is generally confirmed by a worker or a user, the situation that personnel intrudes by mistake in the working process of the ultraviolet disinfection device exists, and misoperation of the ultraviolet disinfection device is easy to occur under the condition that the personnel exist.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a control method of a suspended ceiling type ultraviolet sterilizer, which can effectively avoid the problem of damage to human bodies caused by ultraviolet light and has the advantage of low working energy consumption.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the control method of the suspended ceiling type ultraviolet sterilizer comprises a control device, a human body detection unit and an ultraviolet sterilization device, wherein the human body detection unit and the ultraviolet sterilization device are respectively and electrically connected with the control device; the control method comprises the following steps:
s100, if the human body detection unit does not feed back a signal to the control device, the control device controls the ultraviolet disinfection device to enter a standby state;
s200, the control device judges whether the human body detection unit is in a normal working state or not; if the operation is in the normal operation state, executing step S210;
s210, if the human body detection unit does not feed back a signal to the control device, the control device controls the ultraviolet disinfection device to start working and starts recording the real-time working time length of the ultraviolet disinfection device;
s300, the control device judges whether the real-time working time length of the ultraviolet disinfection device is smaller than a first working time length preset in the control device, and if so, step S310 is executed;
s310, if the control device receives the signal fed back by the human body detection unit, executing a step S311;
s311, the control device controls the ultraviolet disinfection device to stop working and records the working time of the ultraviolet disinfection device;
s312, when the human body detection unit stops feeding back the signal to the control device, the control device records the real-time duration of the feedback signal of the human body detection unit;
s313, if the real-time duration of the feedback signal of the human body detection unit is less than the stay time duration preset in the control device, executing step S410;
s410, the control device controls the ultraviolet disinfection device to restart working, and continues timing based on the recorded working time, wherein the recorded time is set to be a first real-time;
s500, the control device judges whether the first real-time duration is greater than or equal to a preset first working duration, if so, the step S510 is executed;
s510, the control device controls the ultraviolet disinfection device to restore to the standby state.
In the control method of the suspended ceiling type ultraviolet sterilizer, the step S500 further includes the steps of:
s500, the control device judges whether the first real-time duration is greater than or equal to a preset first working duration, if so, the step S510 is executed; if not, executing step S520;
s520, the control device repeatedly executes steps S310 to S500.
In the control method of the ceiling type ultraviolet sterilizer, the step S313 further includes the steps of:
s313, if the real-time duration of the feedback signal of the human body detection unit is less than the stay time duration preset in the control device, executing step S410; otherwise, step S420 is performed;
and S420, when the time length for stopping feeding back the signal to the control device by the human body detection unit is longer than N seconds, wherein N is an integer, N is more than or equal to 1, and the control device repeatedly executes the steps S200 to S510.
In the control method of the suspended ceiling type ultraviolet sterilizer, the control method further comprises the following steps:
and S600, when the time of the ultraviolet disinfection device in the standby state is more than or equal to the maximum standby time preset in the control device, the control device repeatedly executes the steps S200 to S510.
In the control method of the suspended ceiling type ultraviolet sterilizer, the suspended ceiling type ultraviolet sterilizer further comprises a fan, a plasma sterilization device and a temperature detection unit for detecting the working temperature of the ultraviolet sterilizer, wherein the temperature detection unit, the fan and the plasma sterilization device are respectively and electrically connected with the control device; the step S100 further includes the steps of:
and S100, if the human body detection unit does not feed back a signal to the control device and the real-time temperature value fed back by the temperature detection unit is smaller than the maximum working temperature value preset in the control device, the control device controls the ultraviolet disinfection device to enter a standby state and controls the fan and the plasma disinfection device to start.
In the control method of the suspended ceiling type ultraviolet sterilizer, the control method further comprises the following steps:
and S110, if the real-time temperature value fed back by the human body detection unit to the control device or the temperature detection unit is more than or equal to the maximum working temperature value preset in the control device, the control device controls the plasma sterilization device, the fan and the ultraviolet sterilization device to be not working, and outputs alarm information.
In the control method of the suspended ceiling type ultraviolet sterilizer, the control method further comprises the following steps:
s101, if the real-time temperature value fed back by the temperature detection unit is more than or equal to the maximum working temperature value preset in the control device, the control device controls the plasma sterilization device and the fan to stop working and outputs an alarm message.
In the control method of the suspended ceiling type ultraviolet sterilizer, the control method further comprises the following steps:
s220, if the human body detection unit feeds back a signal to the control device, the control device controls the ultraviolet disinfection device to be not operated;
s221, when the time length for the human body detection unit to stop feeding back the signal to the control device is longer than N seconds, wherein N is an integer, N is more than or equal to 1, and the control device executes step S200.
In the control method of the suspended ceiling type ultraviolet sterilizer, the step S200 further includes the steps of:
s200, the control device judges whether the human body detection unit is in a normal working state or not; if the operation is in the normal operation state, executing step S210; otherwise, the control device outputs alarm information.
The invention also correspondingly provides a suspended ceiling type ultraviolet sterilizer, which comprises a control device, an ultraviolet sterilizer and a human body detection unit, wherein the ultraviolet sterilizer and the human body detection unit are respectively and electrically connected with the control device, and the control device is used for executing the control method of the suspended ceiling type ultraviolet sterilizer.
The beneficial effects are that:
the invention provides a control method of a suspended ceiling type ultraviolet sterilizer, which adopts a human body detection unit to realize the detection of whether personnel exist in the environment, effectively avoids the problem of missed detection, ensures that no personnel exist in the environment when an ultraviolet sterilizer is in a working state, and avoids the problem of damage to human bodies caused by ultraviolet light; in addition, in the control method disclosed by the application, when the duration of the non-feedback signal of the human body detection unit is less than the preset stay duration, the control device can control the ultraviolet disinfection device to continue disinfection on the original basis, so that the working energy consumption of the suspended ceiling type ultraviolet sterilizer can be reduced while the environment is effectively disinfected.
Drawings
FIG. 1 is a first logic flow diagram of a control method provided by the present invention;
FIG. 2 is a second logic flow diagram of a control method provided by the present invention;
FIG. 3 is a third logic flow diagram of a control method provided by the present invention;
FIG. 4 is a fourth logic flow diagram of a control method provided by the present invention;
fig. 5 is a logic flow diagram of an embodiment of a control method provided by the present invention.
Detailed Description
The invention provides a ceiling type ultraviolet sterilizer and a control method thereof, which are used for making the purposes, the technical scheme and the effects of the invention clearer and more definite, and the invention is further described in detail below by referring to the accompanying drawings and the embodiments.
In the description of the present invention, it should be understood that the terms "mounted," "connected," and the like should be construed broadly, and that the specific meaning of the terms in the present invention may be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, the invention provides a control method of a ceiling type ultraviolet sterilizer, wherein the ceiling type ultraviolet sterilizer comprises a control device, a human body detection unit and an ultraviolet sterilizer, wherein the human body detection unit and the ultraviolet sterilizer are respectively and electrically connected with the control device; the control method comprises the following steps:
s100, if the human body detection unit does not feed back a signal to the control device, the control device controls the ultraviolet disinfection device to enter a standby state; in one embodiment, the human body detection unit comprises an infrared sensor and a photoelectric detector, wherein the infrared sensor and the photoelectric detector are arranged on the irradiation surface of the suspended ceiling type ultraviolet sterilizer and are used for determining whether a person enters an ultraviolet irradiation range when the ultraviolet sterilization device works; the two different sensors are adopted for detection, so that effective detection can be realized, and the accuracy of a detection result can be improved.
In one embodiment, the ultraviolet sterilizing device comprises a plurality of ultraviolet sterilizing lamps, when the human body detecting unit does not feed back a signal to the control device, no personnel exist in the detection range, and the control device controls the ultraviolet sterilizing lamps to flash to indicate that the ultraviolet sterilizing device enters a standby state; the signal fed back by the human body detection unit is a voltage signal.
S200, the control device judges whether the human body detection unit is in a normal working state or not; the control device is in communication connection with the human body detection unit through the serial interface, and judges whether the human body detection unit is in a normal working state by judging whether the serial interface is in a normal communication state or not; if the operation is in the normal operation state, executing step S210; before the ultraviolet disinfection device formally enters the working state each time, the human body detection unit performs one-time self-check, so that when the ultraviolet disinfection device works, the human body detection unit can effectively detect whether personnel enter the environment or not, and the safety problem caused by the failure of the human body detection unit is prevented.
S210, if the human body detection unit does not feed back a signal to the control device, the control device controls the ultraviolet disinfection device to start working and starts recording the real-time working time length of the ultraviolet disinfection device; when the human body detection unit is in a normal working state and the information fed back by the human body detection unit indicates that no personnel exist in the irradiation range, the ultraviolet disinfection device enters a formal working state.
S300, the control device judges whether the real-time working time length of the ultraviolet disinfection device is smaller than a first working time length preset in the control device, and if so, step S310 is executed; in one embodiment, the first working time period is 15 minutes, and when the working time period of the ultraviolet disinfection device reaches 15 minutes, bacterial viruses in the environment can be effectively killed; the first working time length is related to the working environment of the suspended ceiling type ultraviolet sterilizer and the working performance of the suspended ceiling type ultraviolet sterilizer.
S310, if the control device receives the signal fed back by the human body detection unit, executing a step S311; i.e. it shows that a person enters the irradiation range when the ultraviolet disinfection device is in the working state.
S311, the control device controls the ultraviolet disinfection device to stop working, so that ultraviolet light emitted by the ultraviolet disinfection device is prevented from directly irradiating the human body; the control device records the working time of the ultraviolet disinfection device.
S312, when the human body detection unit stops feeding back the signal to the control device, the control device records the real-time duration of the feedback signal of the human body detection unit; i.e. after the person leaves the irradiation range of the ultraviolet disinfection device, the control device records the stay time of the person in the irradiation range.
S313, if the real-time duration of the feedback signal of the human body detection unit is less than the stay time duration preset in the control device, executing step S410; in one embodiment, the residence time is 5 minutes, which is related to the performance of the suspended ceiling type ultraviolet sterilizer and the size of the space in which the operating environment is located.
S410, the control device controls the ultraviolet disinfection device to restart working, and continues timing based on the recorded working time, wherein the recorded time is set to be a first real-time; namely, when the stay time of the personnel in the irradiation range is less than the preset stay time, the disinfection effect of the ultraviolet disinfection device on the environment is still effective, the working time of the ultraviolet disinfection device can be accumulated, and the working energy consumption of the ultraviolet disinfection device is reduced while the effective disinfection is realized.
S500, the control device judges whether the first real-time duration is greater than or equal to a preset first working duration, if so, the step S510 is executed; when the actual working time of the ultraviolet disinfection device is longer than or equal to the preset first working time, the ultraviolet disinfection device stops working, and effective disinfection of bacterial viruses in the environment is ensured.
S510, the control device controls the ultraviolet disinfection device to restore to a standby state and wait for the next ultraviolet disinfection task.
In the control method disclosed by the application, the human body detection unit is adopted to realize the detection of whether personnel exist in the environment, so that the problem of missed detection is effectively avoided, no personnel exist in the environment when the ultraviolet disinfection device is in a working state, and the problem of damage to the human body caused by ultraviolet light is avoided; in addition, in the control method disclosed by the application, when the duration of the non-feedback signal of the human body detection unit is less than the preset stay duration, the control device can control the ultraviolet disinfection device to continue disinfection on the original basis, so that the working energy consumption of the suspended ceiling type ultraviolet sterilizer can be reduced while the environment is effectively disinfected.
Further, referring to fig. 1, the step S500 further includes the steps of:
s500, the control device judges whether the first real-time duration is greater than or equal to a preset first working duration, if so, the step S510 is executed; if not, executing step S520;
s520, the control device repeatedly executes steps S310 to S500.
In other words, in the process that the actual working time length of the ultraviolet disinfection device does not reach the preset first working time length, the steps S310 to S500 are repeatedly executed to confirm whether a person enters the irradiation range of the ultraviolet disinfection device for many times, so that the ultraviolet disinfection device can stop working in time when the person makes a false break.
Further, referring to fig. 2, the step S313 further includes the steps of:
s313, if the real-time duration of the feedback signal of the human body detection unit is less than the stay time duration preset in the control device, executing step S410; otherwise, step S420 is performed; when the time length of the personnel staying in the irradiation range of the ultraviolet disinfection device is more than or equal to the preset stay time length, the previously executed ultraviolet disinfection task is identified as invalid disinfection, the control device needs to control the ultraviolet disinfection device to execute the ultraviolet disinfection task again, and the time length recorded by the control device to be cleared.
S420, when the time length for stopping feeding back the signal to the control device by the human body detection unit is longer than N seconds, wherein N is an integer, N is more than or equal to 1, and the control device repeatedly executes the steps S200 to S510; in one embodiment, N is 5, that is, after the person leaves the irradiation range of the ultraviolet sterilizing device for 5 seconds, the control device returns to execute steps S200 to S510, and after confirming that the human body detecting unit is in the normal working state, the ultraviolet sterilizing task is re-executed.
Further, referring to fig. 1, the control method further includes the steps of:
s600, when the time of the ultraviolet disinfection device in the standby state is more than or equal to the maximum standby time preset in the control device, the control device repeatedly executes the steps S200 to S510; in one embodiment, the maximum standby time period is 3 hours; the maximum standby time is related to the time required for bacterial viruses in the environment where the suspended ceiling type ultraviolet sterilizer operates to reach the breeding amount.
When the time that the ultraviolet disinfection device is in the standby state is more than or equal to the preset maximum standby time, the control device controls the ultraviolet disinfection device to restart working, automatic disinfection of environmental bacteria and viruses is achieved, the working intelligence of the suspended ceiling type ultraviolet disinfection device is improved, and the use experience of a user is improved.
Further, referring to fig. 3, the ceiling-mounted ultraviolet sterilizer further includes a blower, a plasma sterilization device, and a temperature detection unit for detecting an operating temperature of the ultraviolet sterilizer, where the temperature detection unit, the blower, and the plasma sterilization device are respectively electrically connected with the control device; the step S100 further includes the steps of:
and S100, if the human body detection unit does not feed back a signal to the control device and the real-time temperature value fed back by the temperature detection unit is smaller than the maximum working temperature value preset in the control device, the control device controls the ultraviolet disinfection device to enter a standby state and controls the fan and the plasma disinfection device to start.
In one embodiment, the temperature detection unit comprises a first temperature sensor for detecting the temperature of the whole ceiling type ultraviolet sterilizer and a second temperature sensor for detecting the working temperature of the radiating plate of the ceiling type ultraviolet sterilizer; the control device is internally provided with a maximum working temperature value of the whole machine and a maximum working temperature value of the radiating plate correspondingly; when the two real-time temperatures are smaller than the preset corresponding maximum working temperature values, the control device controls the ultraviolet disinfection device to enter a standby state and controls the fan and the plasma disinfection device to enter a working state; when any real-time temperature is more than or equal to the corresponding maximum working temperature value, the control device controls the ultraviolet disinfection device, the fan and the plasma disinfection device to stop working, and the stability and the safety of the suspended ceiling type ultraviolet disinfection device during working are improved.
Further, referring to fig. 3, the control method further includes the steps of:
s110, if a real-time temperature value fed back by a human body detection unit to a control device or a temperature detection unit is more than or equal to a maximum working temperature value preset in the control device, the control device controls the plasma sterilization device, the fan and the ultraviolet sterilization device to be not working and outputs alarm information; namely, when personnel exist in the irradiation range of the ultraviolet disinfection device or the temperature of the whole ceiling type ultraviolet disinfection device is too high or the temperature of the radiating plate of the ceiling type ultraviolet disinfection device is too high, the ceiling type ultraviolet disinfection device does not work.
In one embodiment, the surface of the suspended ceiling type ultraviolet sterilizer is provided with a red indicator lamp, and the control device flashes once at preset time intervals, such as 5 seconds, by controlling the red indicator lamp, so that the output of alarm information is realized, and maintenance personnel can conveniently confirm the alarm type.
Further, referring to fig. 3, the control method further includes the steps of:
s101, if the real-time temperature value fed back by the temperature detection unit is more than or equal to the maximum working temperature value preset in the control device, the control device controls the plasma sterilization device, the fan and the ultraviolet sterilization device to stop working and outputs an alarm message; when the suspended ceiling type ultraviolet sterilizer is in a working state, if the real-time temperature fed back by any one of the temperature sensors is more than or equal to a corresponding preset maximum working temperature value, the control device controls the suspended ceiling type ultraviolet sterilizer to stop working.
Further, referring to fig. 4, the control method further includes the steps of:
s220, if the human body detection unit feeds back a signal to the control device, the control device controls the ultraviolet disinfection device to be not operated; so as to ensure that the ultraviolet disinfection device starts the disinfection work only when no person exists in the irradiation range.
S221, when the time length for stopping feeding back the signal to the control device by the human body detection unit is longer than N seconds, wherein N is an integer, N is more than or equal to 1, and the control device executes the step S200; after the personnel leave the irradiation range for N seconds, the control device can restart the ultraviolet disinfection task, so that the suspended ceiling type ultraviolet sterilizer is prevented from repeatedly operating for a plurality of times, and the service life of the suspended ceiling type ultraviolet sterilizer is prolonged.
Further, referring to fig. 4, the step S200 further includes the steps of:
s200, the control device judges whether the human body detection unit is in a normal working state or not; if the operation is in the normal operation state, executing step S210; otherwise, the control device outputs alarm information; namely, when the serial interface of the human body detection unit is abnormal in communication, the control device outputs alarm information; in one embodiment, the control device may control the red indicator light to flash at certain intervals, such as 2 seconds, to output alarm information.
The invention also correspondingly provides a suspended ceiling type ultraviolet sterilizer, which comprises a control device, an ultraviolet sterilizer and a human body detection unit, wherein the ultraviolet sterilizer and the human body detection unit are respectively and electrically connected with the control device, and the control device is used for executing the control method of the suspended ceiling type ultraviolet sterilizer.
Specifically, the suspended ceiling type ultraviolet sterilizer comprises a shell, wherein an air inlet and an air outlet are formed in the shell, and a control device, a fan and a plasma sterilizer are arranged in the shell; the surface of the shell is provided with a radiating plate, an ultraviolet disinfection device, a red indicator lamp, a human body detection unit and a temperature detection unit; the temperature detection unit comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is used for detecting the real-time temperature of the suspended ceiling type ultraviolet sterilizer, and the second temperature sensor is used for detecting the real-time temperature of the radiating plate.
It will be understood that equivalents and modifications will occur to those skilled in the art based on the present invention and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (8)
1. The control method of the suspended ceiling type ultraviolet sterilizer is characterized in that the suspended ceiling type ultraviolet sterilizer comprises a control device, a human body detection unit and an ultraviolet sterilization device, wherein the human body detection unit and the ultraviolet sterilization device are respectively and electrically connected with the control device; the control method comprises the following steps:
s100, if the human body detection unit does not feed back a signal to the control device, the control device controls the ultraviolet disinfection device to enter a standby state;
s200, the control device judges whether the human body detection unit is in a normal working state or not; if the operation is in the normal operation state, executing step S210;
s210, if the human body detection unit does not feed back a signal to the control device, the control device controls the ultraviolet disinfection device to start working and starts recording the real-time working time length of the ultraviolet disinfection device;
s300, the control device judges whether the real-time working time length of the ultraviolet disinfection device is smaller than a first working time length preset in the control device, and if so, step S310 is executed;
s310, if the control device receives the signal fed back by the human body detection unit, executing a step S311;
s311, the control device controls the ultraviolet disinfection device to stop working and records the working time of the ultraviolet disinfection device;
s312, when the human body detection unit stops feeding back the signal to the control device, the control device records the real-time duration of the feedback signal of the human body detection unit;
s313, if the real-time duration of the feedback signal of the human body detection unit is less than the stay time duration preset in the control device, executing step S410; otherwise, step S420 is performed;
s410, the control device controls the ultraviolet disinfection device to restart working, and continues timing based on the recorded working time, wherein the recorded time is set to be a first real-time;
s420, when the time length for stopping feeding back the signal to the control device by the human body detection unit is longer than N seconds, wherein N is an integer, N is more than or equal to 1, and the control device repeatedly executes the steps S200 to S510;
s500, the control device judges whether the first real-time duration is greater than or equal to a preset first working duration, if so, the step S510 is executed; if not, executing step S520;
s510, the control device controls the ultraviolet disinfection device to restore to a standby state;
s520, the control device repeatedly executes steps S310 to S500.
2. The method of controlling a ceiling-mounted ultraviolet sterilizer of claim 1, further comprising the steps of:
and S600, when the time of the ultraviolet disinfection device in the standby state is more than or equal to the maximum standby time preset in the control device, the control device repeatedly executes the steps S200 to S510.
3. The method for controlling a ceiling-mounted ultraviolet sterilizer according to claim 1, wherein the ceiling-mounted ultraviolet sterilizer further comprises a fan, a plasma sterilization device and a temperature detection unit for detecting the working temperature of the ultraviolet sterilizer, and the temperature detection unit, the fan and the plasma sterilization device are respectively and electrically connected with the control device; the step S100 further includes the steps of:
and S100, if the human body detection unit does not feed back a signal to the control device and the real-time temperature value fed back by the temperature detection unit is smaller than the maximum working temperature value preset in the control device, the control device controls the ultraviolet disinfection device to enter a standby state and controls the fan and the plasma disinfection device to start.
4. A method of controlling a ceiling-mounted ultraviolet sterilizer as claimed in claim 3, further comprising the steps of:
and S110, if the real-time temperature value fed back by the human body detection unit to the control device or the temperature detection unit is more than or equal to the maximum working temperature value preset in the control device, the control device controls the plasma sterilization device, the fan and the ultraviolet sterilization device to be not working, and outputs alarm information.
5. A method of controlling a ceiling-mounted ultraviolet sterilizer as claimed in claim 3, further comprising the steps of:
s101, if the real-time temperature value fed back by the temperature detection unit is more than or equal to the maximum working temperature value preset in the control device, the control device controls the plasma sterilization device and the fan to stop working and outputs an alarm message.
6. The method of controlling a ceiling-mounted ultraviolet sterilizer of claim 1, further comprising the steps of:
s220, if the human body detection unit feeds back a signal to the control device, the control device controls the ultraviolet disinfection device to be not operated;
s221, when the time length for the human body detection unit to stop feeding back the signal to the control device is longer than N seconds, wherein N is an integer, N is more than or equal to 1, and the control device executes step S200.
7. The method of claim 1, wherein the step S200 further comprises the steps of:
s200, the control device judges whether the human body detection unit is in a normal working state or not; if the operation is in the normal operation state, executing step S210; otherwise, the control device outputs alarm information.
8. A suspended ceiling type ultraviolet sterilizer, comprising a control device, an ultraviolet sterilizer and a human body detection unit, wherein the ultraviolet sterilizer and the human body detection unit are respectively and electrically connected with the control device, and the control device is used for executing the control method of the suspended ceiling type ultraviolet sterilizer as claimed in any one of claims 1 to 7.
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