CN113274517B - Non-magnetic ultraviolet disinfection system with self-adaptive magnetic field intensity - Google Patents
Non-magnetic ultraviolet disinfection system with self-adaptive magnetic field intensity Download PDFInfo
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- CN113274517B CN113274517B CN202110544429.7A CN202110544429A CN113274517B CN 113274517 B CN113274517 B CN 113274517B CN 202110544429 A CN202110544429 A CN 202110544429A CN 113274517 B CN113274517 B CN 113274517B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultra-violet radiation
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultra-violet radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- 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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- 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
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/11—Apparatus for controlling air treatment
- A61L2209/111—Sensor means, e.g. motion, brightness, scent, contaminant sensors
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses a self-adaptive magnetic field intensity nonmagnetic ultraviolet disinfection system, which comprises a magnetic induction sensor, a magnetic control device and a magnetic control device, wherein the magnetic induction sensor is used for detecting a magnetic field intensity value; the magnetic induction sensor detection circuit is used for detecting the magnetic field intensity and the magnetic field direction; the MCU sampling circuit is used for acquiring data of the magnetic induction sensor; the reminding device is connected with the MCU control circuit; the MCU control circuit is used for presetting a magnetic induction intensity base value, a magnetic induction intensity threshold value and disinfection time, receiving data of the MCU sampling circuit, reading the current magnetic induction intensity value, opening the ultraviolet lamp tube, judging whether the difference value between the current magnetic induction intensity value and the preset magnetic induction base value exceeds the magnetic induction threshold value, extinguishing the ultraviolet lamp tube and triggering the reminding device to generate a prompt signal if the difference value exceeds the magnetic induction threshold value, and extinguishing the ultraviolet lamp tube after disinfection is completed within the preset disinfection time otherwise. The invention realizes the detection and judgment of the magnetic field intensity in the magnetic resonance environment, ensures that the system can always work in the safe magnetic field intensity environment, and avoids the abnormal damage phenomenon of the system.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a non-magnetic ultraviolet disinfection system with self-adaptive magnetic field intensity.
Background
At present, ultraviolet disinfection vehicles with magnetism or magnetic resonance compatible nonmagnetic disinfection vehicles with nonmagnetic materials adopted by the body are widely available on the market.
The ultraviolet disinfection vehicle with magnetism has the defects that the body of the ultraviolet disinfection vehicle with magnetism has strong magnetism and cannot be used in a magnetic resonance environment, the body of the ultraviolet disinfection vehicle adopts nonmagnetic materials, other circuit control boards, lamp tubes and the like are magnetic except for the body of the nonmagnetic disinfection vehicle, when the ultraviolet disinfection vehicle is used in a magnetic resonance short-distance range, the magnetic field can generate relatively strong changing magnetic field around the magnetic resonance, the changing magnetic field can lead electrons flowing through the range to shift, so that the lamp tubes or ballasts of the disinfection vehicle system can be damaged, and the magnetic field strength around the magnet is inconsistent in different positions, directions and heights of the magnet in the magnetic resonance environment, and the magnetic field strength of the magnet of different manufacturers is relatively different in the same position, so that the current nonmagnetic disinfection vehicle has relatively large difference in magnet adaptation distance of different manufacturers, and the system damage condition often occurs in the use process.
Therefore, the self-adaptive magnetic field strength non-magnetic ultraviolet disinfection system is provided, the self-adaptive non-magnetic disinfection vehicle can be normally and safely used at any place of magnetic resonance, detection and judgment of the magnetic field strength in the magnetic resonance environment are realized, the system is ensured to work in the safe magnetic field strength environment all the time, and abnormal damage of the system is avoided.
Disclosure of Invention
The invention aims to provide a self-adaptive magnetic field strength non-magnetic ultraviolet disinfection system to solve the problems that a lamp tube or a ballast is damaged and cannot be used in a magnetic resonance environment due to overlarge surrounding magnetic field strength.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the self-adaptive magnetic field intensity non-magnetic ultraviolet disinfection system comprises a magnetic induction sensor, a magnetic induction sensor control circuit and a magnetic induction control circuit, wherein the magnetic induction sensor is driven by a magnetic induction sensor driving circuit and is used for detecting a magnetic field intensity value;
the input end of the magnetic induction sensor detection circuit is connected with the output end of the magnetic induction sensor and is used for detecting the magnetic field intensity and the magnetic field direction;
the input end of the MCU sampling circuit is connected with the output end of the magnetic induction sensor detection circuit and is used for acquiring data of the magnetic induction sensor;
the reminding device is connected with the MCU control circuit;
the MCU control circuit is used for presetting a magnetic induction intensity base value, a magnetic induction intensity threshold value and disinfection time, receiving data of the MCU sampling circuit, reading the current magnetic induction intensity value, opening the ultraviolet lamp tube, judging whether the difference value between the current magnetic induction intensity value and the preset magnetic induction base value exceeds the magnetic induction threshold value, extinguishing the ultraviolet lamp tube and triggering the reminding device to generate a prompt signal if the difference value exceeds the magnetic induction threshold value, and extinguishing the ultraviolet lamp tube after disinfection is completed within the preset disinfection time otherwise.
Further, the reminding device comprises a loudspeaker and a display screen, and is connected with the MCU control circuit.
Further, the magnetic induction sensor detection circuit comprises a primary amplification circuit and a secondary amplification circuit, wherein the input end of the primary amplification circuit is connected with the output end of the magnetic induction sensor, and the input end of the secondary amplification circuit is connected with the output end of the primary amplification circuit.
Further, the magnetic induction sensor detection circuit further comprises a buffer circuit, and the input end of the buffer circuit is connected with the output end of the secondary amplifying circuit.
Further, the magnetic induction sensor detection circuit further comprises a filter circuit, and the filter input end is connected with the output end of the buffer circuit.
Further, the LED lamp further comprises a switch circuit formed by MOS tubes, and the MCU control circuit cuts off the power input of the ultraviolet lamp tube by controlling the on-off of the MOS tubes of the switch circuit to control the on-off of the ultraviolet lamp tube.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a self-adaptive magnetic field intensity nonmagnetic ultraviolet disinfection system, which adopts a nonmagnetic machine body design, and meanwhile, magnetic field intensity detection is added in the system, when a magnetic induction detection sensor of the system detects that the magnetic field intensity at the current position is overlarge and possibly damages a system lamp tube or a ballast, the system automatically cuts off a control pin of an ultraviolet lamp tube, closes the ultraviolet lamp tube, simultaneously sends out sound and prompt information to remind a user that the magnetic field intensity at the position is overlarge, and the system needs to be placed at a position slightly far away for use. The non-magnetic disinfection vehicle is suitable for being used normally and safely in any place of magnetic resonance, detection and judgment of magnetic field intensity in a magnetic resonance environment are achieved, the system is guaranteed to work in a safe magnetic field intensity environment all the time, normal long-term use of the system in different magnetic field environments is guaranteed, safety and reliability of the system in use in any magnetic field environment are guaranteed, and abnormal conditions such as damage of a lamp tube or a ballast and the like of the system are avoided.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a circuit block diagram of the present invention;
FIG. 3 is a reference voltage circuit diagram of the present invention;
FIG. 4 is a circuit diagram of the present invention;
FIG. 5 is a circuit diagram of the magnetic induction sensor of FIG. 4 according to the present invention;
FIG. 6 is a circuit diagram of the magnetic induction sensor of FIG. 4 according to the present invention;
FIG. 7 is a circuit diagram of the buffer of FIG. 4 according to the present invention;
fig. 8 is a diagram of the filter circuit of fig. 4 in accordance with the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the present invention provides an adaptive magnetic field intensity non-magnetic ultraviolet disinfection system, comprising: the magnetic induction sensor is driven by the magnetic induction sensor driving circuit and is used for detecting the magnetic field intensity value; the input end of the magnetic induction sensor detection circuit is connected with the output end of the magnetic induction sensor and is used for detecting the magnetic field intensity and the magnetic field direction; the input end of the MCU sampling circuit is connected with the output end of the magnetic induction sensor detection circuit and is used for acquiring data of the magnetic induction sensor; the reminding device is connected with the MCU control circuit; the MCU control circuit is used for presetting a magnetic induction intensity base value, a magnetic induction intensity threshold value and disinfection time, receiving data of the MCU sampling circuit, reading the current magnetic induction intensity value, opening the ultraviolet lamp tube, judging whether the difference value between the current magnetic induction intensity value and the preset magnetic induction base value exceeds the magnetic induction threshold value, extinguishing the ultraviolet lamp tube and triggering the reminding device to generate a prompt signal if the difference value exceeds the magnetic induction threshold value, and extinguishing the ultraviolet lamp tube after disinfection is completed within the preset disinfection time otherwise. The magnetic induction sensor driving circuit drives the magnetic induction sensor to work, the magnetic field intensity value detected by the magnetic induction sensor is collected by the MCU sampling circuit through the magnetic induction sensor detecting circuit, the magnetic field intensity ADC value of the current position can be calculated, when the system is started, the SCM MCU control circuit firstly reads the magnetic field intensity base value and the magnetic induction threshold value set by a user, the ultraviolet lamp tube is lighted after the manual switch is opened, the user starts to disinfect, the MCU sampling circuit collects the ADC value of the magnetic induction sensor in real time, the MCU sampling circuit collects the voltage signal output by the magnetic induction sensor, the real-time magnetic field intensity value is calculated, the system compares the current magnetic field intensity value with the set threshold value, when the difference between the current magnetic field intensity detecting value of the system and the set base value is larger than the set threshold value, the system immediately closes the ultraviolet lamp tube, prompt sound is sent out, and fault information is displayed, and otherwise, the ultraviolet lamp tube is extinguished after disinfection is finished in the preset disinfection time. The system works under proper magnetic field intensity, so that abnormal conditions such as damage of the sterilizing vehicle system can not occur, when the system is far away from a strong magnetic position, the system can re-lighten the ultraviolet lamp and re-time, the self-adaptive magnetic field intensity can automatically control the closing and extinguishing actions of the ultraviolet lamp tube of the sterilizing vehicle, and the system can be ensured not to occur in the use process of equipment damage and the like while meeting market demands.
Further, the reminding device comprises a loudspeaker and a display screen, and is connected with the MCU control circuit. When the difference between the current magnetic field intensity detection value of the system and the set base value is larger than the set threshold value, the system immediately turns off the lamp tube, the loudspeaker sends out prompt sound and the display screen displays fault information, the MCU control circuit of the system controls the on-off of the MOS tube through the IO pin of the MCU for realizing the control of the ultraviolet lamp tube, and meanwhile, the MCU control circuit is connected with the OLED display screen for displaying disinfection information, so that information such as delay disinfection time, disinfection duration, error number and the like can be displayed.
Further, as shown in fig. 4 and 5, the magnetic induction sensor driving circuit includes an operational amplifier U8A and a hall sensor U10, the model of the operational amplifier U8A is TLC2274IPWR, the model of the hall sensor U10 is HG-106C, the HG-106C is a gallium arsenide linear hall, the HG-106C is commonly used for current detection and magnetic field detection, a first pin (output pin) of the operational amplifier is connected to a first pin (input pin) of the hall sensor, a third pin (input pin) of the operational amplifier is connected to an output end of the reference voltage circuit through a resistor R51, a third pin (input pin) of the operational amplifier is grounded through a resistor R52, a second pin (input pin) of the operational amplifier is grounded through a resistor R44, a voltage output pin (11 th pin) of the operational amplifier is grounded through a capacitor C40, a voltage input pin (4 th pin) of the operational amplifier is grounded through a capacitor C40, and a third pin (R44) of the hall sensor is grounded through a fourth input pin and connected to the output end of the fourth sensor.
Further, as shown in fig. 4 and 6, the magnetic induction sensor detection circuit includes a first-stage amplification circuit and a second-stage amplification circuit, the first-stage amplification circuit includes a first-stage amplifier (operational amplifier) U11, the second-stage amplification circuit includes a second-stage amplifier (operational amplifier) U9, the types of U11 and U9 are both AD8221ARMZ, a first pin of the first-stage amplifier U11 is connected to a second pin (output pin) of the hall sensor through a resistor R45, a fourth pin of the first-stage amplifier U11 is connected to a fourth pin (output pin) of the hall sensor through a resistor R50, a second pin of the first-stage amplifier U11 is connected to a third pin of the first-stage amplifier U11 through a resistor R49, a fifth pin of the first-stage amplifier U11 is connected to a-5V end, an eighth pin of the first-stage amplifier U11 is connected to a +5v end, a sixth pin of the first-stage amplifier U11 is connected to an output end of the reference voltage circuit, and a seventh pin of the first-stage amplifier U11 is connected to a fourth pin (input pin) of the second-stage amplifier U9; the second pin of the second-stage amplifier U9 is connected with the third pin of the second-stage amplifier U9 through a resistor R48, the fifth pin of the second-stage amplifier U9 is connected with a-5V end, the eighth pin of the second-stage amplifier U9 is connected with a +5V end, the sixth pin of the second-stage amplifier U9 is connected with the output end of a reference voltage circuit, the first pin of the second-stage amplifier U9 is grounded through a capacitor C12, the first pin of the second-stage amplifier U9 is connected with the MCU DAC end through a resistor R42, and the seventh pin of the second-stage amplifier U9 is connected with the input end of a buffer circuit. The input signal of the magnetic induction sensor is applied to the integrated amplifier and a common mode signal is provided to the input amplifier, each amplifier is connected to an accurate feedback resistor to ensure gain, and then the differential voltage is converted into single-ended voltage through the output amplifier, and the gain multiple of the integrated operational amplifier. The magnetic induction sensor is used for amplifying the magnetic field intensity value differential value to a relatively large voltage through the primary amplifying circuit, then comparing the magnetic field intensity value differential value with the reference voltage in the secondary amplifying circuit, judging the magnetic field intensity and the magnetic field direction at the position, after passing through the secondary amplifying circuit, inputting the magnetic field intensity differential value into the sampling circuit of the MCU through the buffering and filtering circuit, and accurately calculating the magnetic induction intensity of the current position through the magnetic induction intensity ADC value sampled by the MCU.
Further, as shown in fig. 4 and 7, the buffer circuit includes an operational amplifier U8D, the model of which is TLC2274IPWR, the input end (12 th pin) of the operational amplifier U8D is connected to the output end (seventh pin) of the second-stage amplifier U9, the input end (13 th pin) of the operational amplifier U8D is connected to the output end (14 th pin) of the operational amplifier U8D, and the output end (14 th pin) of the operational amplifier U8D is sequentially connected to the input end of the filter circuit through a resistor R46 and a resistor R47. The buffer circuit reduces the switching loss of the device, absorbs and suppresses overvoltage in the switching process, and enhances the detection precision and accuracy of the system.
Further, as shown in fig. 4 and 8, the filter circuit includes an operational amplifier U8C, the model of which is TLC2274IPWR, the input end (pin 10) of the operational amplifier U8C is connected to the output end of the operational amplifier U8D after passing through a resistor R47 and a resistor R46 in sequence, the input end (pin 10) of the operational amplifier U8C is grounded after passing through a capacitor C10, the input end (pin 9) of the operational amplifier U8C is connected to the output end (pin 8) of the operational amplifier U8C, the common connection point of the resistor R47 and the resistor R46 is connected to the output end (pin 8) of the operational amplifier U8C after passing through a capacitor C39, the output end (pin 8) of the operational amplifier U8C is connected to the input end of the MCU sampling circuit after passing through a resistor R43, one end of the capacitor C37 is grounded, the other end of the resistor R43 is grounded, the other end of the diode D5 is grounded, and the model of the diode D5 is mmsz3v0.1. The low-pass filter circuit can ensure the stability of the output voltage value of the magnetic induction sensor, filter noise signals with low frequency, and enhance the detection precision and accuracy of the system.
Further, the LED lamp further comprises a switch circuit formed by MOS tubes, and the MCU control circuit cuts off the power input of the ultraviolet lamp tube by controlling the on-off of the MOS tubes of the switch circuit to control the on-off of the ultraviolet lamp tube. The system MCU control circuit controls the on-off of the MOS tube through the IO pin of the MCU control circuit, and is used for realizing the control of the ultraviolet lamp tube. The magnetic field induction automatic switch ultraviolet lamp tube is also necessary to be manually lightened, otherwise, the magnetic field induction function is not started.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An adaptive magnetic field strength non-magnetic ultraviolet disinfection system, comprising:
the magnetic induction sensor is driven by the magnetic induction sensor driving circuit and is used for detecting the magnetic field intensity value;
the input end of the magnetic induction sensor detection circuit is connected with the output end of the magnetic induction sensor and is used for detecting the magnetic field intensity and the magnetic field direction;
the input end of the MCU sampling circuit is connected with the output end of the magnetic induction sensor detection circuit and is used for acquiring data of the magnetic induction sensor;
the MCU control circuit is used for presetting a magnetic induction intensity base value, a magnetic induction intensity threshold value and a disinfection time, receiving data of the MCU sampling circuit, reading the current magnetic induction intensity value, opening the ultraviolet lamp tube, judging whether the difference value between the current magnetic induction intensity value and the preset magnetic induction base value exceeds the magnetic induction threshold value, extinguishing the ultraviolet lamp tube and triggering the reminding device to generate a prompt signal if the difference value exceeds the magnetic induction threshold value, and extinguishing the ultraviolet lamp tube after disinfection is completed within the preset disinfection time otherwise;
the magnetic induction sensor driving circuit comprises an operational amplifier and a Hall sensor, and the operational amplifier is connected with the Hall sensor;
the magnetic induction sensor detection circuit comprises a primary amplification circuit, a secondary amplification circuit and a buffer circuit, wherein the input end of the primary amplification circuit is connected with the output end of the magnetic induction sensor, and the input end of the secondary amplification circuit is connected with the output end of the primary amplifier;
the primary amplifying circuit comprises a primary amplifier, the secondary amplifying circuit comprises a secondary amplifier, the buffer circuit comprises an operational amplifier, the input end of the primary amplifier is connected with the output end of the Hall sensor, and the output end of the secondary amplifier is connected with the input end of the buffer circuit;
the first pin of the primary amplifier is connected with the second pin of the Hall sensor, the fourth pin of the primary amplifier is connected with the fourth pin of the Hall sensor through the fourth pin of the Hall sensor, the second pin of the primary amplifier is connected with the third pin of the primary amplifier, the fifth pin of the primary amplifier is connected with the-5V end, the eighth pin of the primary amplifier is connected with the +5V end, the sixth pin of the primary amplifier is connected with the output end of the reference voltage circuit, and the seventh pin of the primary amplifier is connected with the fourth pin of the secondary amplifier; the second pin of the second-stage amplifier is connected with the third pin of the second-stage amplifier, the fifth pin of the second-stage amplifier is connected with a-5V end, the eighth pin of the second-stage amplifier U9 is connected with a +5V end, the sixth pin of the second-stage amplifier is connected with the output end of the reference voltage circuit, the first pin of the second-stage amplifier is grounded after passing through a capacitor, the first pin of the second-stage amplifier is connected with the MCU DAC end, and the seventh pin of the second-stage amplifier is connected with the input end of the buffer circuit.
2. The adaptive magnetic field strength non-magnetic ultraviolet disinfection system of claim 1, wherein: the disinfection system also comprises a reminding device which is connected with the MCU control circuit.
3. The adaptive magnetic field strength non-magnetic ultraviolet disinfection system of claim 2, wherein: the reminding device comprises a loudspeaker and a display screen, and is connected with the MCU control circuit.
4. The adaptive field strength non-magnetic ultraviolet disinfection system of claim 3, wherein: the magnetic induction sensor detection circuit further comprises a filter circuit, and the filter input end is connected with the output end of the buffer circuit.
5. The adaptive magnetic field strength non-magnetic ultraviolet disinfection system of claim 1, wherein: the LED lamp also comprises a switch circuit formed by MOS tubes, and the MCU control circuit controls the on-off of the MOS tubes of the switch circuit to cut off the power input of the ultraviolet tube and control the on-off of the ultraviolet tube.
6. The adaptive field strength non-magnetic ultraviolet disinfection system according to claim 1, wherein said operational amplifier is of the type TLC2274IPWR and said hall sensor is of the type HG-106C.
7. The adaptive magnetic field strength non-magnetic ultraviolet disinfection system according to claim 1, wherein the primary and secondary amplifying circuits are model AS8221ARMZ.
8. The adaptive field strength non-magnetic ultraviolet light sterilization system according to claim 4, wherein the filter circuit model is TLC2274IPWR.
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| CN113893362B (en) * | 2021-10-27 | 2023-02-21 | 深圳瑞格泰科医疗科技有限公司 | Non-magnetic ultraviolet disinfection system capable of extending into magnetic resonance cavity and method thereof |
| CN114732922A (en) * | 2022-02-18 | 2022-07-12 | 深圳瑞格泰科医疗科技有限公司 | Non-magnetic ultraviolet disinfection system capable of detecting magnetic field deviation of lamp tube |
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