A protection circuit for preventing ultraviolet light leakage

Abstract

The utility model discloses a protection circuit that prevents ultraviolet line leakage relates to the safe use technical field of disinfection equipment, including detection circuit, ultraviolet lamp switch circuit and control circuit, and the control end of control circuit is connected with the output of detection circuit, and the output of control circuit is connected with the control end of ultraviolet lamp switch circuit, wherein, detection circuit includes a plurality of sterilization cabinet door closed detection circuit, and control circuit controls ultraviolet lamp switch circuit according to the signal of a plurality of sterilization cabinet door closed detection circuit, and through multiple sterilization cabinet door closed detection circuit, the situation of not closing well of sterilization cabinet door is detected, so that the detection result is more accurate, when the sterilization cabinet door is not closed well, can better avoid the situation of ultraviolet line leakage.

Description

Technical Field

[0001] This utility model relates to the field of safe use technology of disinfection equipment, and in particular to a protective circuit to prevent ultraviolet leakage. Background Technology

[0002] Existing ultraviolet (UV) disinfection cabinets primarily achieve efficient sterilization by using UV light emitted from UV lamps to destroy the DNA structure of microorganisms. However, traditional UV disinfection cabinets have revealed the following problems that urgently need to be addressed in practical applications:

[0003] Firstly, when the cabinet door is not fully closed, there is a risk of ultraviolet leakage, and long-term or high-intensity ultraviolet exposure may cause irreversible damage to human skin and eyes.

[0004] Secondly, traditional products rely on manual operation of the UV lamps by the user, lacking real-time monitoring and automated intervention mechanisms for the cabinet door's closed state, making it difficult to ensure proactive protection of the equipment in unsafe conditions. These design flaws not only affect the safety of the disinfection cabinet's use. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution to address the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protection circuit to prevent ultraviolet leakage, comprising...

[0007] Detection circuit,

[0008] UV lamp switch circuit

[0009] The control circuit has its control terminal connected to the output terminal of the detection circuit, and its output terminal is connected to the control terminal of the ultraviolet lamp switch circuit.

[0010] The detection circuit includes multiple disinfection cabinet door closure detection circuits, and the control circuit controls the ultraviolet lamp switching circuit based on the signals from the multiple disinfection cabinet door closure detection circuits.

[0011] As a further embodiment of this utility model: the control circuit has multiple control terminals that correspond one-to-one with the output terminals of multiple disinfection cabinet door closure detection circuits.

[0012] As a further embodiment of this utility model, the control circuit also has multiple output terminals that correspond one-to-one with the multiple control terminals of the control circuit, and the control circuit controls the output terminal of the corresponding control circuit according to the signal obtained from the corresponding control terminal.

[0013] As a further embodiment of this utility model: the ultraviolet lamp switch circuit has multiple control terminals that correspond one-to-one with the multiple output terminals of the control circuit.

[0014] As a further embodiment of this utility model: the ultraviolet lamp switch circuit includes multiple lamp control terminal electronic switches that correspond one-to-one with the multiple output terminals of the control circuit;

[0015] The lamp control terminal electric switch has a control terminal controlled by the corresponding output terminal of the control circuit. The lamp control terminal electric switch has a lamp control terminal connection circuit that is in a connected state / open state according to the control signal of the control circuit. The input terminals and output terminals of the lamp control terminal connection circuits of multiple lamp control terminal electric switches are connected in series.

[0016] As a further embodiment of this utility model: multiple disinfection cabinet door closure detection circuits form a detection circuit for the disinfection cabinet door to be closed in place at least at two positions on the disinfection cabinet door.

[0017] As a further embodiment of this utility model: multiple disinfection cabinet door closure detection circuits are located at the same position on the disinfection cabinet door to detect whether the disinfection cabinet door is closed in place.

[0018] As a further embodiment of this utility model, the multiple disinfection cabinet door closure detection circuits include at least two different arrival detection methods.

[0019] As a further embodiment of this utility model: the disinfection cabinet door closure detection circuit includes a detection end electronic control switch, and a non-contact sensor or contact switch;

[0020] The control terminal of the detection terminal electronic control switch is controlled by the corresponding non-contact sensor or contact switch. The detection terminal electronic control switch has a detection terminal connection circuit that is in a connected state / open state according to the control of the corresponding non-contact sensor or contact switch. The input and output terminals of the detection terminal connection circuits of multiple detection terminal electronic control switches are connected in series.

[0021] As a further aspect of this utility model: the output terminal of the control circuit outputs a corresponding conduction control signal based on the closed signal obtained from the control terminal of the corresponding control circuit.

[0022] Compared with existing technologies, the advantages of this technical solution are: by using multiple door closure detection circuits to perform multiple detections on the situation where the disinfection cabinet door is not closed properly, the detection results are more accurate; and when the disinfection cabinet door is not closed properly, it can better prevent ultraviolet leakage.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an application diagram of the present invention, in which multiple disinfection cabinet door closure detection circuits are located at the same position on the disinfection cabinet door to detect whether the disinfection cabinet door is closed in place;

[0026] Figure 2 This is an application diagram of the present invention. Multiple disinfection cabinet door closure detection circuits form a detection circuit for the disinfection cabinet door to be closed in place on at least two closing surfaces of the disinfection cabinet door.

[0027] Figure 3 This is an application diagram of the present invention. Multiple disinfection cabinet door closure detection circuits form a detection circuit for the disinfection cabinet door to be closed in place at least at different positions on one of the closing surfaces of the disinfection cabinet door.

[0028] Figure 4 This is an application diagram of the present invention. The multiple disinfection cabinet door closure detection circuits include at least two different arrival detection methods.

[0029] Figure 5 This is an application diagram of the present invention. The multiple disinfection cabinet door closing detection circuits include at least a contact-type arrival detection method and a non-contact-type arrival detection method.

[0030] Figure 6 This is an application diagram of the present invention, which includes three disinfection cabinet door closure detection circuits.

[0031] Figure 7 This is the circuit block diagram of this utility model;

[0032] Figure 8 This is a circuit block diagram of the control unit and multiple disinfection cabinet door closure detection circuits of this utility model;

[0033] Figure 9 This is a circuit diagram of the detection circuit of this utility model;

[0034] Figure 10 This is a circuit block diagram of the control unit and multiple first electronically controlled switches of this utility model;

[0035] Figure 11 This is the circuit diagram of the ultraviolet lamp switch circuit of this utility model;

[0036] Figure 12This is the circuit diagram of the switch button of this utility model.

[0037] The corresponding labels in the attached diagram are explained as follows:

[0038] Detection circuit-1,

[0039] Disinfection cabinet door closure detection circuit-10, partial disinfection cabinet door closure detection circuit-10a, partial disinfection cabinet door closure detection circuit-10b, partial disinfection cabinet door closure detection circuit-10c.

[0040] First disinfection cabinet door closure detection circuit -11, second disinfection cabinet door closure detection circuit -12, third disinfection cabinet door closure detection circuit -13.

[0041] Control circuit-2,

[0042] UV lamp switch circuit -3

[0043] First lamp control terminal electrical switch -31a, second lamp control terminal electrical switch -31b, third lamp control terminal electrical switch -31c

[0044] Disinfection cabinet door -100,

[0045] UV lamp-200,

[0046] Cabinet - 300,

[0047] Top pressure section -400. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] Please see Figure 1-12 A protective circuit to prevent ultraviolet (UV) leakage is provided. The protective circuit includes a detection circuit 1, a control circuit 2, and a UV lamp switch circuit 3. The control circuit 1 can control the UV lamp 200 inside the disinfection cabinet via the UV lamp switch circuit 3.

[0050] The detection circuit 1 can be designed to detect whether the disinfection cabinet door 100 is closed in place, or to detect whether the disinfection cabinet door 100 is closed; when the detection circuit 1 detects that the disinfection cabinet door 100 is not closed in place (or has been opened), the control circuit 2 can acquire the above-mentioned detection signal.

[0051] Correspondingly, the detection circuit 1 can also be designed to detect whether the disinfection cabinet door 100 is not closed in place, or to detect whether the disinfection cabinet door 100 is not closed; when the detection circuit 1 detects that the disinfection cabinet door 100 is closed in place (or has been closed), the control circuit 1 can acquire the above-mentioned detection signal.

[0052] In this embodiment, the detection circuit 1 is configured to perform multiple detections for the dangerous situation that the disinfection cabinet door 100 is not closed properly. When any detection confirms that the disinfection cabinet door 100 is not closed properly, the control circuit 2 controls the ultraviolet lamp 200 accordingly through the ultraviolet lamp switch circuit 3.

[0053] In other words, when a dangerous situation is detected where the disinfection cabinet door 100 may not be properly closed, which could lead to ultraviolet leakage, the control circuit 2 can learn about the dangerous situation through the detection circuit 1, and then control the ultraviolet lamp 200 accordingly through the ultraviolet lamp switch circuit 3.

[0054] In some embodiments, the corresponding control is, for example, controlling the ultraviolet lamp to turn off when the ultraviolet lamp is on; the corresponding control is, for example, keeping the ultraviolet lamp off when the ultraviolet lamp is off.

[0055] In this embodiment, the detection circuit 1 is configured to perform multiple detections for the dangerous situation that the disinfection cabinet door 100 is not closed properly. Only when all multiple detections confirm that the disinfection cabinet door 100 is closed properly will the control circuit 2 allow the ultraviolet lamp to be controlled to be turned on or allow the ultraviolet lamp to be in the on state.

[0056] In this embodiment, the detection circuit 1 includes multiple disinfection cabinet door closure detection circuits 10, and the control circuit 2 controls the ultraviolet lamp switching circuit 3 based on the signals from the multiple disinfection cabinet door closure detection circuits 10. By using multiple disinfection cabinet door closure detection circuits to perform multiple detections on the condition that the disinfection cabinet door 100 is not closed properly, the detection results are more accurate; when the disinfection cabinet door 100 is not closed properly, ultraviolet leakage can be better avoided.

[0057] In some embodiments, multiple disinfection cabinet door closure detection circuits form a detection of the disinfection cabinet door being closed in place at least at two positions on the disinfection cabinet door.

[0058] like Figure 2 As shown, in some embodiments, taking the rotating and closed disinfection cabinet door as an example, when the disinfection cabinet door 100 is closed, it has an upper closing surface, a lower closing surface, a left closing surface, a right closing surface, and a rear closing surface.

[0059] Partial door closure detection circuit 10a is used to detect the door's closure position on the right closing surface of the disinfection cabinet door, for example; partial door closure detection circuit 10b is used to detect the door's closure position on the lower closing surface of the disinfection cabinet door, for example.

[0060] like Figure 3 As shown, in some embodiments, taking the rotating and closed disinfection cabinet door as an example, when the disinfection cabinet door 100 is closed, it has an upper closing surface, a lower closing surface, a left closing surface, a right closing surface, and a rear closing surface.

[0061] Partial disinfection cabinet door closure detection circuit 10a, for example, forms a closure detection of the disinfection cabinet door in the high area of ​​the right closing surface of the disinfection cabinet door; partial disinfection cabinet door closure detection circuit 10c, for example, forms a closure detection of the disinfection cabinet door in the low area of ​​the right closing surface of the disinfection cabinet door.

[0062] In some embodiments, multiple disinfection cabinet door closure detection circuits are located at the same position on the disinfection cabinet door to detect whether the disinfection cabinet door is closed in place.

[0063] like Figure 1 As shown, multiple disinfection cabinet door closure detection circuits 10a, 10b, and 10c are installed in the same area of ​​the cabinet body 300 to detect the same part of the disinfection cabinet door 100.

[0064] In some embodiments, the multiple disinfection cabinet door closure detection circuits include at least two different arrival detection methods.

[0065] like Figure 4 As shown, for example, some disinfection cabinet door closure detection circuits 10a use magnetic induction to detect the door closure; some disinfection cabinet door closure detection circuits 10c use a contact switch top-pressure trigger to detect the door closure.

[0066] In some embodiments, the multiple disinfection cabinet door closure detection circuits include at least a contact-type arrival detection method and a non-contact-type arrival detection method.

[0067] like Figure 5 As shown, for example, some disinfection cabinet door closure detection circuits 10b use magnetic induction to detect the door closure; some disinfection cabinet door closure detection circuits 10c use a contact switch top-pressure trigger to detect the door closure.

[0068] In some embodiments, non-contact positioning detection methods can also be non-contact detection methods such as photoelectric detection methods and ultrasonic detection methods.

[0069] In some embodiments, the sensor or contact switch of the partial disinfection cabinet door closure detection circuit may be installed on the disinfection cabinet door and correspond to the door closure cooperation structure of the disinfection cabinet.

[0070] For example, the Hall sensor (magnetic induction positioning detection method) in some disinfection cabinet door closure detection circuits is installed on the disinfection cabinet door. The door closure mechanism consists of a magnetic block installed on the cabinet body corresponding to the Hall sensor. When the disinfection cabinet door is closed, the magnetic block is positioned within the positioning detection range of the Hall sensor.

[0071] In some embodiments, the sensor or contact switch of the partial disinfection cabinet door closure detection circuit may be installed on the cabinet door closure mating structure and correspond to the disinfection cabinet door.

[0072] like Figure 5 As shown, for example, the microswitch (contact switch top-trigger detection method) of the disinfection cabinet door closure detection circuit 10c is installed on the cabinet body 300 of the disinfection cabinet and corresponds to the disinfection cabinet door. The disinfection cabinet door 100 has a top-pressing part 400 corresponding to the microswitch. When the disinfection cabinet door is closed, the top-pressing part triggers the microswitch. When the disinfection cabinet door is closed relative to the door closing mechanism, the disinfection cabinet door closure detection circuit can detect the closure of the disinfection cabinet door.

[0073] In this embodiment, the control circuit 2 has multiple control terminals that correspond one-to-one with the output terminals of multiple disinfection cabinet door closure detection circuits, and the corresponding detection signal is obtained individually through the corresponding control terminal.

[0074] In some embodiments, the control circuit 2 further has multiple output terminals corresponding one-to-one with multiple control terminals of the control circuit, and the control circuit controls the corresponding output terminal (control circuit) according to the signal obtained by the corresponding control terminal (control circuit).

[0075] In some embodiments, the ultraviolet lamp switch circuit 3 has multiple control terminals that correspond one-to-one with the multiple output terminals of the control circuit 2.

[0076] Control circuit 2 only allows the ultraviolet lamp to be turned on or in an on state when multiple output terminals of control circuit 2 output specified control signals. That is, ultraviolet lamp switch circuit 3 also forms multiple control protections.

[0077] In some embodiments, the ultraviolet lamp switching circuit 3 includes multiple lamp control terminal electronic switches that correspond one-to-one with multiple output terminals of the control circuit 2.

[0078] The lamp control terminal switch has a control terminal controlled by the corresponding output terminal of the control circuit 2. The lamp control terminal switch has a lamp control terminal connection circuit that is in a connected state / open state according to the control signal of the control circuit 2. The input terminals and output terminals of the lamp control terminal connection circuits of multiple lamp control terminal switches are connected in series to form multiple control protection.

[0079] like Figure 7 , 10 As shown in Figures 1 and 11, in some embodiments, for example, three lamp control terminal switches are provided, namely, a first lamp control terminal switch 31a, a second lamp control terminal switch 31b, and a third lamp control terminal switch 31c.

[0080] The first lamp control terminal switch 31a includes a MOSFET Q1, the second lamp control terminal switch 31b includes a MOSFET Q2, and the third lamp control terminal switch 31c includes a MOSFET Q3.

[0081] The source of MOSFET Q1 is connected to a 12V voltage (or other operating voltage). The drain of MOSFET Q1 is connected in series with the source of MOSFET Q2. The drain of MOSFET Q2 is connected in series with the source of MOSFET Q3. The drain of MOSFET Q3 is connected in series with the positive terminal of the UV lamp.

[0082] The gate of MOSFET Q1 is controlled by the first output terminal CTR-1 of the control circuit, the gate of MOSFET Q2 is controlled by the second output terminal CTR-2 of the control circuit, and the gate of MOSFET Q3 is controlled by the third output terminal CTR-3 of the control circuit.

[0083] The circuit from the source to the drain of MOSFET Q2 is configured as the lamp control terminal connection circuit corresponding to the second lamp control terminal electronic switch, and the gate of MOSFET Q2 is configured as the control terminal corresponding to the second lamp control terminal electronic switch. Similarly, the circuit from the source to the drain of MOSFET Q1 is configured as the lamp control terminal connection circuit corresponding to the first lamp control terminal electronic switch, and the gate of MOSFET Q2 is configured as the control terminal corresponding to the first lamp control terminal electronic switch; the circuit from the source to the drain of MOSFET Q3 is configured as the lamp control terminal connection circuit corresponding to the third lamp control terminal electronic switch, and the gate of MOSFET Q3 is configured as the control terminal corresponding to the third lamp control terminal electronic switch.

[0084] In some embodiments, when any one of MOSFETs Q1, Q2, and Q3 is not controlled to be turned on, the ultraviolet lamp switching circuit 3 constitutes the controlled circuit 2 to control the ultraviolet lamp 200 accordingly.

[0085] Corresponding controls include, for example, turning off the UV lamp when it is already on; and, for example, keeping the UV lamp off when it is already off.

[0086] In some embodiments, the control circuit allows the ultraviolet lamp to be turned on or to be in the on state only when all three MOSFETs Q1, Q2, and Q3 are controlled to be turned on.

[0087] In some embodiments, in the lamp control terminal electronic switch of the ultraviolet lamp switch circuit, an electronic control component such as a transistor can be used to replace the MOSFET.

[0088] like Figure 7 , 8 As shown, in some embodiments, for example, three disinfection cabinet door closure detection circuits are provided, namely, a first disinfection cabinet door closure detection circuit 11, a second disinfection cabinet door closure detection circuit 12, and a third disinfection cabinet door closure detection circuit 13.

[0089] The control circuit 2 has a first control terminal IN-1 corresponding to the first output terminal CTR-1, a second control terminal IN-2 corresponding to the second output terminal CTR-2, and a third control terminal IN2 corresponding to the third output terminal CTR-3.

[0090] When control circuit 2 receives the closing signal of the first disinfection cabinet door closing detection circuit 11 through its first input terminal IN-1, its first output terminal CTR-1 outputs a corresponding control signal, enabling the first lamp control terminal electric switch 31a to conduct. Similarly, when control circuit 2 receives the closing signal of the first disinfection cabinet door closing detection circuit 12 through its second input terminal IN-2, its second output terminal CTR-2 outputs a corresponding control signal, enabling the second lamp control terminal electric switch 31b to conduct. When control circuit 2 receives the closing signal of the third disinfection cabinet door closing detection circuit 13 through its third input terminal IN-3, its third output terminal CTR-3 outputs a corresponding control signal, enabling the third lamp control terminal electric switch 31c to conduct. This multi-detection and multi-control protection makes the detection and control of ultraviolet leakage prevention more accurate and safer.

[0091] In some embodiments, this protection circuit also includes a control unit, through which the user can input input indicating the need for ultraviolet disinfection.

[0092] like Figure 12 As shown, the control unit includes, for example, a switch S1 located between the negative terminal of the ultraviolet lamp and ground. After the user presses the switch S1 to connect the negative terminal of the ultraviolet lamp to ground, there are two control states: the ultraviolet lamp can be turned on and it cannot be turned on.

[0093] If the disinfection cabinet door 100 is not closed properly, the ultraviolet lamp switch circuit 3 is not controlled to be turned on, and the ultraviolet lamp is not powered on, that is, the ultraviolet lamp remains off.

[0094] When the disinfection cabinet door 100 is detected to be closed, the ultraviolet lamp switch circuit 3 is controlled to be turned on, and the ultraviolet lamp is powered on, that is, the ultraviolet lamp is allowed to be in the on state.

[0095] After the ultraviolet lamp is turned on, if the disinfection cabinet door 100 is accidentally opened, the corresponding detection that the disinfection cabinet door 100 is not closed properly will cancel the conduction control of the ultraviolet lamp switch circuit, causing the ultraviolet lamp to be powered off and turned off, that is, controlling the ultraviolet lamp to turn off; after the switch button is pressed, when the disinfection cabinet door is closed, the corresponding detection that the disinfection cabinet door 100 is closed will be detected, and the ultraviolet lamp switch circuit 3 will be controlled to conduct, so that the ultraviolet lamp can be powered on and work, that is, the ultraviolet lamp can be controlled to turn on.

[0096] In some embodiments, the control circuit 2 includes, for example, a control chip and its peripheral circuitry.

[0097] In some embodiments, the disinfection cabinet door closure detection circuit includes a detection-end electronic control switch and a non-contact sensor or contact switch.

[0098] The control terminal of the detection end electronic control switch is controlled by the corresponding non-contact sensor or contact switch. The detection end electronic control switch has a detection end connection circuit that is in a connected state / open state according to the control of the corresponding non-contact sensor or contact switch. The input and output terminals of the detection end connection circuits of multiple detection end electronic control switches are connected in series to form multiple control.

[0099] like Figure 7 , 9 As shown, in some embodiments, for example, three disinfection cabinet door closure detection circuits are provided, namely, a first disinfection cabinet door closure detection circuit 11, a second disinfection cabinet door closure detection circuit 12, and a third disinfection cabinet door closure detection circuit 13.

[0100] The detection terminal control switch of the first disinfection cabinet door closure detection circuit 11 is the first detection terminal control switch. The detection terminal control switch of the second disinfection cabinet door closure detection circuit 12 is the second detection terminal control switch. The detection terminal control switch of the third disinfection cabinet door closure detection circuit 13 is the third detection terminal control switch.

[0101] The first detection terminal electronic control switch of the first disinfection cabinet door closure detection circuit 11 includes a transistor Q4, and the non-contact sensor of the first disinfection cabinet door closure detection circuit 11 is a Hall sensor HALL-3.

[0102] The second detection terminal electronic control switch of the second disinfection cabinet door closure detection circuit 12 includes a transistor Q5, and the non-contact sensor of the second disinfection cabinet door closure detection circuit 12 is a Hall sensor HALL-2.

[0103] The third detection terminal electronic control switch of the third disinfection cabinet door closure detection circuit 13 includes a transistor Q6, and the non-contact sensor of the third disinfection cabinet door closure detection circuit 13 is a Hall sensor HALL-1.

[0104] The emitter of transistor Q4 is connected to a 5V voltage (or other operating voltage). The collector of transistor Q4 is connected in series with the emitter of transistor Q5. The collector of transistor Q5 is connected in series with the emitter of transistor Q6. The collector of transistor Q6 is connected in series with the control terminal HALL-OUT of the control circuit.

[0105] The base of transistor Q4 is controlled by the signal terminal of Hall sensor HALL-3, the base of transistor Q5 is controlled by the signal terminal of Hall sensor HALL-2, and the base of transistor Q6 is controlled by the signal terminal of Hall sensor HALL-1.

[0106] Only when Hall sensors HALL-3, HALL-2, and HALL-1 all detect the corresponding magnetic blocks in place (indicating the disinfection cabinet door is closed) will the series circuit between the control terminal HALL-OUT and the 5V voltage be in a conducting state. Control circuit 2 can achieve multiple detections through a single control terminal, which is more conducive to complex circuit design.

[0107] In some embodiments, in the detection terminal electronic switch of the disinfection cabinet door closure detection circuit, an electronic control component such as a MOSFET can be used to replace the transistor.

[0108] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A protective circuit to prevent ultraviolet leakage, characterized in that, include Detection circuit, UV lamp switch circuit The control circuit has its control terminal connected to the output terminal of the detection circuit, and its output terminal is connected to the control terminal of the ultraviolet lamp switch circuit. The detection circuit includes multiple disinfection cabinet door closure detection circuits, and the control circuit controls the ultraviolet lamp switching circuit based on the signals from the multiple disinfection cabinet door closure detection circuits. The disinfection cabinet door closure detection circuit includes a detection-end electronic control switch, as well as a non-contact sensor or contact switch; The control terminal of the detection terminal electronic control switch is controlled by the corresponding non-contact sensor or contact switch. The detection terminal electronic control switch has a detection terminal connection circuit that is in a connected state / open state according to the control of the corresponding non-contact sensor or contact switch. The input and output terminals of the detection terminal connection circuits of multiple detection terminal electronic control switches are connected in series.

2. The protection circuit according to claim 1, characterized in that, The control circuit has multiple control terminals that correspond one-to-one with the output terminals of multiple disinfection cabinet door closure detection circuits.

3. The protection circuit according to claim 2, characterized in that, The control circuit also has multiple output terminals that correspond one-to-one with the multiple control terminals of the control circuit. The control circuit controls the output terminal of the corresponding control circuit according to the signal obtained from the corresponding control terminal.

4. The protection circuit according to claim 3, characterized in that, The ultraviolet lamp switching circuit has multiple control terminals that correspond one-to-one with the multiple output terminals of the control circuit.

5. The protection circuit according to claim 4, characterized in that, The ultraviolet lamp switching circuit includes multiple lamp control terminal electronic switches that correspond one-to-one with multiple output terminals of the control circuit. The lamp control terminal electric switch has a control terminal controlled by the corresponding output terminal of the control circuit. The lamp control terminal electric switch has a lamp control terminal connection circuit that is in a connected state / open state according to the control signal of the control circuit. The input terminals and output terminals of the lamp control terminal connection circuits of multiple lamp control terminal electric switches are connected in series.

6. The protection circuit according to claim 1, characterized in that, Multiple disinfection cabinet door closure detection circuits form a closed-in detection of the disinfection cabinet door at at least two positions on the disinfection cabinet door.

7. The protection circuit according to claim 1, characterized in that, Multiple door closure detection circuits are used at the same position on the disinfection cabinet door to detect whether the door is closed in place.

8. The protection circuit according to claim 1, characterized in that, Multiple disinfection cabinet door closure detection circuits include at least two different arrival detection methods.

9. The protection circuit according to any one of claims 1-8, characterized in that, The output terminal of the control circuit outputs the corresponding conduction control signal based on the closed signal obtained from the control terminal of the corresponding control circuit.

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