Automatic control system for ultraviolet disinfection

Abstract

The invention relates to the field of medical systems, and discloses an automatic control system for ultraviolet disinfection, which comprises a sensor module, a control module, an execution module and a communication module, the sensor module is used for collecting ultraviolet light intensity data in the device and outputting an analog signal according to the light intensity change; the control module receives an analog signal of the sensor module, processes data by using a preset algorithm and a control strategy, and determines the working state of the ultraviolet disinfection equipment according to a processing result; the execution module controls the frequency converter to adjust the rotating speed of the fan through the stepping motor according to an output signal of the control module so as to control the air speed in the ultraviolet disinfection equipment; the communication module is used for interacting with a user, intelligent control over the ultraviolet disinfection equipment is achieved by automatically collecting ultraviolet light intensity data and adjusting the rotating speed of the draught fan, the disinfection efficiency and accuracy are improved, adjustable gears are provided, the user can select according to the irradiation dose requirements of different viruses or bacteria, and the flexibility and applicability of the system are enhanced.

Description

Technical Field

[0001] The invention relates to the field of medical systems, in particular to an automatic control system for ultraviolet disinfection. Background Art

[0002] Because the spread of viral diseases in recent years has caused serious harm to human health, how to prevent the spread of viruses has become a global problem. Therefore, the research and design of an intelligent ultraviolet disinfection automatic control system is of great significance for eliminating viruses in the air and preventing the spread of diseases.

[0003] The main methods of eliminating viruses include high-temperature heating, chemical disinfection, and ultraviolet disinfection. Among them, the high-temperature heating method takes a long time to heat and is difficult to implement in public places. The chemical disinfection method requires spraying chemical reagents on the disinfected location, such as chlorine-containing disinfectants, ether, or 75% ethanol. These reagents are either toxic or volatile and flammable, and their use cannot guarantee absolute safety. In the ultraviolet disinfection method, when the irradiation dose reaches a certain value, the molecular structure of the ribonucleic acid (RNA) in the virus can be destroyed, causing it to lose its ability to reproduce and self-replicate, thereby eliminating the virus.

[0004] Traditional UV disinfection equipment usually relies on fixed UV light intensity and irradiation time, and cannot be flexibly adjusted according to actual needs. In addition, unstable city grid voltage or aging of UV lamps may cause the light intensity to weaken, affecting the disinfection effect. Therefore, a control system that can automatically adjust the UV light intensity and irradiation time is needed to improve the disinfection efficiency and accuracy. For this purpose, we propose an automatic control system for UV disinfection. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides an automatic control system for ultraviolet disinfection, which solves the above-mentioned problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic control system for ultraviolet disinfection, comprising a sensor module, a control module, an execution module and a communication module, wherein the data transmission ends of the sensor module, the execution module and the communication module are all interconnected with the data transmission end of the control module;

[0009] The sensor module is used to collect ultraviolet light intensity data in the device and output analog signals according to changes in light intensity;

[0010] The control module uses the STC12C2A60S2 chip to receive the analog signal of the sensor module, processes the data using a preset algorithm and control strategy, and determines the working state of the ultraviolet disinfection equipment according to the processing result;

[0011] The execution module controls the frequency converter to adjust the fan speed through the stepper motor according to the output signal of the control module, thereby controlling the wind speed in the ultraviolet disinfection equipment;

[0012] The communication module is used to interact with the user and set different gears to correspond to different irradiation doses, including at least one gear for clearing viruses and an adjustable gear for adapting to the irradiation dose requirements of new viruses in the future;

[0013] The system also includes a 3D printed connector for connecting the motor shaft and the inverter.

[0014] Preferably, the sensor module collects analog signals and inputs them into a single chip microcomputer. After data processing, it can cooperate with the control module and the execution module to increase the fan speed to compensate for insufficient irradiation dose. The sensor module also includes an alarm device. When it detects that the ultraviolet light intensity is lower than a preset threshold, it sends an alarm signal to prompt the user to replace or clean the lamp tube.

[0015] Preferably, the control module calculates the real-time irradiation dose according to the formula of ultraviolet irradiation dose = irradiation intensity × irradiation time and the formula of wind speed = optical cavity length / irradiation time, and compares it with the standard irradiation dose, and adjusts the fan speed according to the comparison result to compensate for the insufficient irradiation dose.

[0016] Preferably, the execution module is responsible for controlling the wind speed of the ultraviolet disinfection equipment, and the fan is controlled by a frequency converter. This module uses a stepper motor to control the output voltage of the frequency converter, thereby controlling the fan speed.

[0017] Preferably, the communication module is used to interact directly with the user. In order to flexibly kill other viruses or bacteria, different gears are provided, each gear corresponding to a different irradiation dose. Five gears are set according to the irradiation doses for killing different pathogens and viruses, of which the fifth gear is an adjustable gear to adapt to the adjustment of the irradiation dose for new viruses in the future. When a new virus spreads, the user presses the fifth gear according to the instructions, and the screen displays numbers 1 to 9, corresponding to irradiation doses of 800 to 4000 μw.min / cm2, and then presses the number corresponding to the dose that meets the standard for clearing the new virus.

[0018] Preferably, the hardware circuit is composed of circuits of a sensor module, a control module, an execution module and a communication module, and each module is connected through a printed circuit board to achieve signal transmission and control functions.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides an automatic control system for ultraviolet disinfection, which has the following beneficial effects:

[0021] 1. The automatic control system of ultraviolet disinfection realizes intelligent control of ultraviolet disinfection equipment by automatically collecting ultraviolet light intensity data and adjusting the fan speed, thereby improving the disinfection efficiency and accuracy.

[0022] 2. The automatic control system of ultraviolet disinfection is equipped with an alarm device, which promptly reminds the user to replace or clean the lamp when the ultraviolet light intensity is lower than the preset threshold, thus ensuring the stability of the disinfection effect.

[0023] 3. The automatic control system of ultraviolet disinfection provides adjustable gears, and users can choose according to the irradiation dose requirements of different viruses or bacteria, which enhances the flexibility and applicability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the system module structure of the present invention;

[0025] Figure 2 This is the automatic control flow chart of the present invention;

[0026] Figure 3 Schematic diagram of the communication module gear setting interface of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-3 , an automatic control system for ultraviolet disinfection, comprising a sensor module, a control module, an execution module and a communication module, wherein the data transmission ends of the sensor module, the execution module and the communication module are all interconnected with the data transmission end of the control module;

[0029] The sensor module is used to collect the ultraviolet light intensity data in the device and output analog signals according to the changes in light intensity;

[0030] A control module is used to receive the analog signal from the sensor module, process the data using a preset algorithm and control strategy, and determine the working state of the ultraviolet disinfection equipment according to the processing result;

[0031] An execution module is used to control the frequency converter to adjust the fan speed through a stepper motor according to the output signal of the control module, thereby controlling the wind speed in the ultraviolet disinfection equipment;

[0032] A communication module, used to interact with the user and set different gears to correspond to different irradiation doses, including at least one gear for clearing viruses and an adjustable gear for adapting to the irradiation dose requirements of new viruses in the future;

[0033] The system also includes 3D-printed connectors for connecting the motor shaft to the inverter.

[0034] Sensor Module:

[0035] The sensor module is one of the core components of the system. It is responsible for collecting the UV light intensity data in the device. In order to achieve this function, we set up a UV light intensity sensor in the device, which can collect analog signals and input them into the microcontroller. The microcontroller processes the received signals to obtain the current UV light intensity value.

[0036] In order to prevent the light intensity from weakening due to unstable city grid voltage or aging of UV lamps, we have set up an alarm device. When the sensor detects that the UV light intensity is lower than the preset threshold, it will trigger an alarm signal to prompt the user to replace or clean the lamp in time to ensure the stability of the disinfection effect.

[0037] Control Module:

[0038] The control module uses the STC12C2A60S2 chip as the core processor. This chip has the characteristics of high performance and low power consumption, and can meet the system's requirements for data processing and control accuracy.

[0039] The control module determines the working state of the UV disinfection equipment based on the data collected by the UV photoelectric sensor, using a pre-set algorithm and control strategy. The algorithm includes the relationship between the UV irradiation dose, the irradiation intensity and the irradiation time (UV irradiation dose = irradiation intensity × irradiation time), as well as the relationship between the wind speed, the optical cavity length and the irradiation time (wind speed = optical cavity length / irradiation time).

[0040] Through these two relationships, the control module can calculate the real-time irradiation dose and compare it with the standard irradiation dose. If the real-time irradiation dose is lower than the standard irradiation dose, the control module will issue a command to compensate for the insufficient irradiation dose by adjusting the fan speed.

[0041] Execution module:

[0042] The execution module is responsible for controlling the wind speed of the UV disinfection equipment. To achieve this goal, we use a frequency converter to control the speed of the fan. The frequency converter can receive instructions from the control module and adjust the output voltage according to the instructions, thereby changing the speed of the fan.

[0043] In the execution module, we also use a stepper motor to control the output voltage of the inverter. The stepper motor has the characteristics of high precision and fast response speed, which can ensure the precise adjustment of the fan speed.

[0044] Communication module:

[0045] The communication module is used to interact directly with the user. We set different gears to correspond to different irradiation doses to achieve the killing requirements of different viruses or bacteria. Figure 2 As shown, the first level corresponds to the radiation dose for clearing the current virus.

[0046] In order to enhance the flexibility of the system, we have also set the 5th gear as an adjustable gear. When a new virus spreads, the user can adjust the system to the 5th gear according to the instructions and select the number corresponding to the dose that meets the standard for clearing the new virus on the screen. In this way, the system can adapt to the adjustment requirements of the irradiation dose for new viruses in the future.

[0047] 3D Model Printing

[0048] In order to facilitate the connection between the motor shaft and the inverter, we used 3D printing technology to make the connector. The design of the connector takes into account the size and shape of the motor shaft and the inverter to ensure that they can be tightly connected and work stably.

[0049] According to the automatic control flow chart, the software code was written and burned into the STC12C2A60S2 chip. The software code implements the following functions:

[0050] Receive the ultraviolet light intensity data collected by the sensor module, and process and store the data;

[0051] Calculate the real-time irradiation dose according to the algorithm and control strategy, and compare it with the standard irradiation dose;

[0052] Based on the comparison results, an instruction is issued to compensate for the insufficient irradiation dose by adjusting the fan speed;

[0053] Interact with the communication module, receive the gear information input by the user, and adjust the working state of the system according to the gear information;

[0054] Monitor the operating status of the system and send out alarm signals when abnormalities occur.

[0055] The hardware circuit is composed of the circuits of the sensor module, control module, execution module and communication module. The modules are connected through a printed circuit board to realize signal transmission and control functions.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic control system for ultraviolet disinfection, characterized in that: It includes a sensor module, a control module, an execution module and a communication module, wherein the data transmission ends of the sensor module, the execution module and the communication module are all interconnected with the data transmission end of the control module; The sensor module is used to collect ultraviolet light intensity data in the device and output analog signals according to changes in light intensity; The control module uses the STC12C2A60S2 chip to receive the analog signal of the sensor module, processes the data using a preset algorithm and control strategy, and determines the working state of the ultraviolet disinfection equipment according to the processing result; The execution module controls the frequency converter to adjust the fan speed through the stepper motor according to the output signal of the control module, thereby controlling the wind speed in the ultraviolet disinfection equipment; The communication module is used to interact with the user and set different gears to correspond to different irradiation doses, including at least one gear for clearing viruses and an adjustable gear for adapting to the irradiation dose requirements of new viruses in the future; The system also includes a 3D printed connector for connecting the motor shaft and the inverter.

2. An automatic control system for ultraviolet disinfection according to claim 1, characterized in that: The sensor module collects analog signals and inputs them into the single chip microcomputer. After data processing, it can cooperate with the control module and the execution module to increase the fan speed to compensate for the insufficient irradiation dose. The sensor module also includes an alarm device. When it detects that the ultraviolet light intensity is lower than a preset threshold, it sends an alarm signal to prompt the user to replace or clean the lamp tube.

3. An automatic control system for ultraviolet disinfection according to claim 2, characterized in that: The control module calculates the real-time irradiation dose according to the formula of ultraviolet irradiation dose = irradiation intensity × irradiation time and the formula of wind speed = optical cavity length / irradiation time, and compares it with the standard irradiation dose, and adjusts the fan speed according to the comparison result to compensate for the insufficient irradiation dose.

4. An automatic control system for ultraviolet disinfection according to claim 3, characterized in that: The execution module is responsible for controlling the wind speed of the ultraviolet disinfection equipment. The fan is controlled by a frequency converter. This module uses a stepper motor to control the output voltage of the frequency converter, thereby controlling the fan speed.

5. An automatic control system for ultraviolet disinfection according to claim 4, characterized in that: The communication module is used to interact directly with the user. In order to flexibly kill other viruses or bacteria, different gears are set, each gear corresponds to a different irradiation dose, and 5 gears are set according to the irradiation dose for killing different germs and viruses; The 5th gear is adjustable to adapt to the adjustment of irradiation dose for new viruses in the future. When a new virus spreads, the user presses the 5th gear according to the instructions. The screen displays numbers 1 to 9, corresponding to irradiation doses of 800 to 4000 μw.min / cm2. Then press the number corresponding to the dose that meets the standard for clearing the new virus.

6. An automatic control system for ultraviolet disinfection according to claim 5, characterized in that: The hardware circuit is composed of circuits of a sensor module, a control module, an execution module and a communication module, and each module is connected through a printed circuit board to realize signal transmission and control functions.

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