Disinfection device and method of using the same

Abstract

The present invention relates to the technical field of preventing contact transmission of infection, and specifically to a disinfection device and a method for using the same, wherein the device comprises a disinfection box, an image sensor, a distance sensor, a nozzle group and a controller, wherein the controller is respectively connected to the image sensor, the distance sensor and the nozzle group; the nozzle group comprises at least two disinfection nozzles, and the spraying areas of the disinfection nozzles are different, corresponding to disinfection objects of different sizes; the image sensor is used to collect image data of the disinfection object; the distance sensor is used to measure the distance between the disinfection object and the disinfection box; the controller is used to judge the size of the disinfection object according to the distance detected by the distance sensor and the image data collected by the image sensor, and then control the corresponding disinfection nozzle to spray disinfectant. The present invention is provided with disinfection nozzles with different spraying ranges, and the corresponding disinfection nozzles can be selected according to the size of the disinfection object, so as to meet the use requirements of different users and avoid the waste of disinfectant.

Description

[Technical field]

[0001] The present invention relates to the technical field of preventing contact-transmitted infection, and in particular to a disinfection device and a method for using the same. [Background technology]

[0002] At present, in pharmaceutical companies, food processing plants, medical and health care, banks, hotels, restaurants and kindergartens, in order to ensure hand hygiene, disinfection devices are usually installed for hand disinfection. Disinfection devices, also known as hand disinfectors or hand cleaners, are electrical products that use the principle of induction to spray disinfectant in a contact-free manner to disinfect hands. Conventional disinfection devices usually include structures such as a disinfection box, a disinfection nozzle, and a sensor. When disinfection is required, the hand is directly inserted into the disinfection box. After the sensor senses it, the disinfection nozzle can spray disinfectant to disinfect the hand.

[0003] However, the commonly used disinfection devices currently have the following problems: the user who uses the disinfection device to disinfect his hands may be a minor or an adult, a male or a female, etc. For different users, their palm sizes are not the same. If the disinfection nozzle is of a uniform size, the spraying area of ​​the disinfectant is also consistent, which makes it difficult to meet the use needs of different users. For example, when the disinfection nozzle of the disinfection device sets the spraying area of ​​the disinfection nozzle according to the palm size of an adult, a large amount of disinfectant will be wasted when a child uses the disinfection device; when the disinfection nozzle of the disinfection device sets the spraying area of ​​the disinfection nozzle according to the palm size of a minor, the spraying area will be too small when an adult uses the disinfection device.

[0004] In addition, when a commonly used disinfection device detects that an object has entered the disinfection box, it will trigger the disinfection nozzle to spray disinfectant, but it is difficult to detect whether the object entering the disinfection box is a human hand, and it is also difficult to determine whether the object has stayed there stably. When the object entering the disinfection box is not a human hand or the human hand has not stayed there stably, if the disinfection nozzle is triggered to spray disinfectant, it may cause a waste of disinfectant.

[0005] Furthermore, the user's hands may have just been washed when they are placed in the disinfection area, so the hands usually contain residual moisture that has not yet dried and volatilized. The residual moisture will dilute the effective disinfectant ingredients after mixing with the disinfectant, seriously reducing the disinfection effect. Moreover, when the disinfection device sprays the disinfectant, it is difficult to avoid that some of the disinfectant is not accurately sprayed on the user's hands and then drips down; if the disinfection device is used frequently, the residual disinfectant may gather at the bottom of the disinfection box, affecting the cleanliness of the disinfection device and also bringing maintenance burdens to users or managers.

[0006] In view of this, overcoming the defects of the above-mentioned prior art is an urgent problem to be solved in the field of this technology. [Summary of the invention]

[0007] The technical problems to be solved by the present invention are:

[0008] When different users use the disinfection device to disinfect their hands, their palm sizes are not the same. If the disinfection nozzle is of a uniform size, the spraying area of ​​the disinfectant is also consistent, which makes it difficult to meet the usage needs of different users and easily causes problems such as waste of disinfectant or insufficient spraying.

[0009] The present invention achieves the above object through the following technical solutions:

[0010] In a first aspect, the present invention provides a disinfection device, comprising a disinfection box 1, an image sensor 2, a distance sensor 3, a nozzle group and a controller, wherein the controller is connected to the image sensor 2, the distance sensor 3 and the nozzle group respectively;

[0011] The nozzle group includes at least two disinfection nozzles, and the spraying areas of the at least two disinfection nozzles are different, corresponding to disinfection objects of different sizes respectively;

[0012] The image sensor 2 is used to collect image data of the disinfection object entering the disinfection box 1; the distance sensor 3 is used to measure the distance between the disinfection object and the disinfection box 1; the controller is used to judge the size of the disinfection object based on the distance detected by the distance sensor 3 and the image data collected by the image sensor 2, and then control the corresponding disinfection nozzle to spray the disinfectant.

[0013] Preferably, the controller is also used to determine whether the disinfection object is a legitimate disinfection object based on the image data collected by the image sensor 2, and at the same time determine whether the disinfection object enters the disinfection box 1 according to the distance detected by the distance sensor 3, and whether the disinfection object stays stably in the disinfection box 1;

[0014] When it is determined that a legitimate disinfection object has entered the disinfection box 1 and stayed there stably, the controller controls the nozzle group to spray disinfectant so as to disinfect the legitimate disinfection object entering the disinfection box 1; wherein the legitimate disinfection object is a human hand.

[0015] Preferably, the nozzle group includes a first nozzle 4 and a second nozzle 5, and the spraying area of ​​the first nozzle 4 is larger than the spraying area of ​​the second nozzle 5; wherein the spraying area of ​​the first nozzle 4 corresponds to the palm size of an adult, and the spraying area of ​​the second nozzle 5 corresponds to the palm size of a minor.

[0016] Preferably, two nozzle groups are provided, namely a first nozzle group and a second nozzle group; wherein, the first nozzle group is arranged at the top of the disinfection box 1, and is used to spray disinfectant onto the upper surface of the disinfection object; the second nozzle group is arranged at the bottom of the disinfection box 1, and is used to spray disinfectant onto the lower surface of the disinfection object.

[0017] Preferably, a hot air blower 6 is provided on the top of the disinfection box 1, and the hot air blower 6 is connected to the controller; wherein, the controller determines whether there is residual moisture on the surface of the disinfection object entering the disinfection box 1 based on the image data collected by the image sensor 2, and when there is residual moisture, controls the hot air blower 6 to turn on so as to dry the disinfection object.

[0018] Preferably, a fill light 7 is further provided on the top of the disinfection box 1, and the fill light 7 is used to illuminate the disinfection object entering the disinfection box 1 and generate reflected light on the surface of the disinfection object, so that the controller can judge whether there is residual moisture on the surface of the disinfection object according to the image data of the fill light 7 collected by the image sensor 2;

[0019] Among them, when the number of strong reflection points on the surface of the disinfected object exceeds a preset threshold, it proves that there is residual moisture on the surface of the disinfected object.

[0020] Preferably, an infrared bulb is also provided on the top of the disinfection box 1 for heating the surface of the disinfection object during the drying process to accelerate the drying process.

[0021] In a second aspect, the present invention further provides a method for using the disinfection device according to the first aspect, comprising:

[0022] The distance sensor 3 and the controller determine whether a disinfection object has entered the disinfection box 1. If so, the image sensor 2 collects image data of the disinfection object, and the controller determines whether the disinfection object is a legal disinfection object;

[0023] If the object to be disinfected is a legitimate object to be disinfected, the distance sensor 3 and the controller are used to determine whether the object to be disinfected is stably staying in the disinfection box 1;

[0024] When the object to be disinfected stays stably in the disinfection box 1, the fill light 7 is turned on, and the image data collected by the image sensor 2 at this time is used to determine whether there is residual moisture on the surface of the object to be disinfected. If there is residual moisture, the hot air blower 6 is turned on to dry the surface of the object to be disinfected;

[0025] The size of the disinfection object is determined by combining the data of the distance sensor 3 and the image sensor 2, and the controller controls the disinfection nozzles of the corresponding spraying area in the nozzle group to spray the disinfectant.

[0026] Preferably, judging whether there is residual moisture on the surface of the disinfection object according to the image data collected by the image sensor 2 at this time is specifically:

[0027] The image sensor 2 collects the image data of the disinfection object under the supplementary light 7, and transmits the image data to the controller;

[0028] The controller identifies the number of strong reflection points on the surface of the disinfection object according to the image data. If the number of strong reflection points exceeds a preset threshold, it proves that there is residual moisture on the surface of the disinfection object.

[0029] Preferably, when the nozzle group includes a first nozzle 4 and a second nozzle 5, the size of the disinfection object is judged by combining the data of the distance sensor 3 and the image sensor 2, and the controller controls the disinfection nozzles of the corresponding spraying area in the nozzle group to spray the disinfectant, specifically:

[0030] The distance sensor 3 detects the vertical distance between the disinfection object and the nozzle group and transmits it to the controller, and the image sensor 2 collects image data of the disinfection object and transmits it to the controller;

[0031] The controller identifies the size of the disinfection object by combining the image data collected by the image sensor 2 and the vertical distance detected by the distance sensor 3;

[0032] If the size of the disinfection object is larger than the preset size threshold, the controller controls the first nozzle 4 to be turned on to spray disinfectant; if the size of the disinfection object is smaller than the preset size threshold, the controller controls the second nozzle 5 to be turned on to spray disinfectant.

[0033] Compared with the traditional technology, the beneficial effects of the present invention are:

[0034] The disinfection device provided by the present invention is provided with disinfection nozzles with different spraying ranges, and is also provided with an image sensor and a distance sensor. By combining image recognition technology with distance detection, the size of the disinfection object entering the disinfection box can be accurately identified, and then the disinfection nozzle with the corresponding spraying range is selected according to the size of the disinfection object, which can meet the use needs of different users, and while ensuring that the disinfectant is sprayed sufficiently, the waste of the disinfectant can also be avoided; moreover, by combining image recognition technology with distance detection, it can also be accurately identified whether the object entering the disinfection box is a legal disinfection object and whether it stays stably, which can prevent illegal disinfection objects and unstable disinfection objects from entering the disinfection box to spray disinfectant, thereby reducing the waste of disinfectant.

Brief Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A three-dimensional structural diagram of a disinfection device provided by an embodiment of the present invention;

[0037] Figure 2 A three-dimensional structural diagram of a disinfection device provided by an embodiment of the present invention at another angle;

[0038] Figure 3 A three-dimensional structural diagram of a hot air blower provided in an embodiment of the present invention;

[0039] Figure 4 A flow chart of a method for using a disinfection device provided in an embodiment of the present invention. [Specific implementation method]

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", "left", "right", "front", "back" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and are not required that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0042] In each embodiment of the present invention, the symbol “ / ” means having two functions at the same time, and the symbol “A and / or B” indicates that the combination of the previous and next objects connected by the symbol includes three cases: “A”, “B”, and “A and B”.

[0043] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0044] Embodiment 1:

[0045] The embodiment of the present invention provides a disinfection device, which can be widely used in pharmaceutical companies, food processing plants, medical and health care, banks, hotels, restaurants and kindergartens for hand disinfection. Figure 1 The disinfection device includes a disinfection box 1, an image sensor 2, a distance sensor 3, a nozzle group and a controller; wherein the image sensor 2, the distance sensor 3 and the nozzle group can be arranged on the top of the disinfection box 1, such as Figure 1 , of course, it can also be set at the bottom of the disinfection box 1, which is not the only limitation here; the controller can be set inside the disinfection box 1 or outside the disinfection box 1, and the controller is respectively connected to the image sensor 2, the distance sensor 3 and the nozzle group, and can be connected through a data cable. In order to meet the use requirements of different sizes of disinfection objects, the nozzle group includes at least two disinfection nozzles, and the spraying area ranges of the at least two disinfection nozzles are different, corresponding to disinfection objects of different sizes.

[0046] The image sensor 2 is used to collect image data of the disinfection object entering the disinfection box 1 and transmit it to the controller. In order to make the collected image better cover the disinfection object, the image sensor 2 can be embedded in the central position of the top of the disinfection box 1, such as Figure 1 As shown, the lens shooting area of ​​the image sensor 2 is facing the center of the interior of the disinfection box 1.

[0047] The distance sensor 3 is used to measure the distance between the disinfection object and the disinfection box 1 and transmit it to the controller. The distance specifically refers to the vertical distance between the disinfection object and the nozzle group. The distance sensor 3 can be an infrared distance sensor or an ultrasonic distance sensor, which is not limited here.

[0048] The controller can determine the size of the disinfection object entering the disinfection box 1 based on the vertical distance detected by the distance sensor 3 and the image data collected by the image sensor 2, and then control the corresponding disinfection nozzle to spray the disinfectant according to the size of the disinfection object, so that the spraying range can match the size of the disinfection object currently in the disinfection box 1.

[0049] In addition, the controller can also determine whether the disinfection object is a legitimate disinfection object based on the image data collected by the image sensor 2, and at the same time determine whether the disinfection object has entered the disinfection box 1 and whether the disinfection object has stably stayed in the disinfection box 1 based on the vertical distance detected by the distance sensor 3; the legitimate disinfection object here refers to human hands. When the detected vertical distance is less than the preset distance threshold, it can be determined that the disinfection object has entered the disinfection box 1, and when the detected vertical distance remains stable and no longer changes, it can be determined that the disinfection object has stably stayed in the disinfection box 1.

[0050] In the actual working process, when it is determined that a legitimate disinfection object (i.e., a human hand) has entered the disinfection box 1 and has stayed there stably in combination with the detection data of the image sensor 2 and the distance sensor 3, the controller will control the nozzle group to spray disinfectant so as to disinfect the legitimate disinfection object entering the disinfection box 1. When the detected vertical distance identifies that the disinfection object has moved out of the disinfection box 1, the controller can control the nozzle group to stop spraying disinfectant.

[0051] The above-mentioned disinfection device provided by the embodiment of the present invention is provided with disinfection nozzles with different spraying ranges, and is also provided with an image sensor and a distance sensor. Through the combination of image recognition technology and distance detection, the size of the disinfection object entering the disinfection box can be accurately identified, and then the disinfection nozzle with the corresponding spraying range is selected according to the size of the disinfection object, which can meet the usage needs of different users, and while ensuring sufficient spraying of the disinfectant, it can also avoid the waste of the disinfectant; moreover, through the combination of image recognition technology and distance detection, it can also accurately identify whether the object entering the disinfection box is a legal disinfection object and whether it stays stably, which can prevent illegal disinfection objects and unstable disinfection objects from entering the disinfection box to spray disinfectant, thereby reducing the waste of disinfectant.

[0052] The disinfection device is provided with a disinfectant delivery pipe, a solenoid valve and a liquid pump corresponding to each disinfection nozzle, and the disinfectant delivery pipe is connected to the disinfectant storage tank and the corresponding disinfection nozzle, so as to deliver the disinfectant in the disinfectant storage tank to the disinfection nozzle. The solenoid valve and the liquid pump are both connected to the controller, and the controller controls the switches of the solenoid valve and the liquid pump so that the disinfectant in the disinfectant storage tank reaches the disinfection nozzle through the disinfectant delivery pipe, thereby realizing the spraying of the disinfectant.

[0053] refer to Figure 1 and Figure 2In a specific embodiment, the legal disinfection object is a human hand. To meet the use requirements of adults and minors respectively, the nozzle group includes a first nozzle 4 and a second nozzle 5. The spraying area of ​​the first nozzle 4 is larger than the spraying area of ​​the second nozzle 5; wherein the spraying area of ​​the first nozzle 4 corresponds to the palm size of an adult, and the spraying area of ​​the second nozzle 5 corresponds to the palm size of a minor. When a human hand enters the disinfection box 1 and stays stably, the controller can judge the size of the disinfection object according to the distance detected by the distance sensor 3 and the image data collected by the image sensor 2; if the size is greater than the preset size threshold, it can be determined as an adult, and the controller can control the first nozzle 4 to be turned on to spray the disinfectant; if the size is less than the preset size threshold, it can be determined as a minor, and the controller can control the second nozzle 5 to be turned on to spray the disinfectant. By using nozzles with different spraying ranges to spray disinfectant on objects of different sizes, it can not only adapt to the larger palm size of adults, but also prevent the spraying of a larger range of disinfectant on the smaller palm range of young children, thereby preventing the waste of disinfectant and reducing the workload of disinfectant replenishment and maintenance of the disinfection device.

[0054] Among them, the nozzle group can be set in only one group, for example, installed on the top of the disinfection box 1, and the user can turn the palm to spray the disinfectant on both sides of the hand when disinfecting the hand. In an optional embodiment, the nozzle group can also be set in two groups, namely the first nozzle group and the second nozzle group. Figure 1 and Figure 2 As shown, the two nozzle groups each include a first nozzle 4 and a second nozzle 5. The first nozzle group is arranged at the top of the disinfection box 1 to spray disinfectant on the upper surface of the disinfection object; the second nozzle group is arranged at the bottom of the disinfection box 1 to spray disinfectant on the lower surface of the disinfection object. In this way, the user does not need to turn his hands when disinfecting so that the disinfectant can be evenly sprayed on both sides of the palm, which is more convenient to use.

[0055] Furthermore, since the user's hands may have just been washed when they are placed in the disinfection area, the residual moisture on the hands will dilute the disinfectant active ingredients after mixing with the disinfectant, reducing the disinfection effect. Moreover, the disinfectant residual liquid may accumulate at the bottom of the disinfection box after long-term use, affecting the cleanliness of the disinfection device and bringing maintenance burden to the user or manager. Considering the above problems, an air drying device can be added to the disinfection box 1, as follows:

[0056] like Figure 1-Figure 3As shown, a hot air blower 6 is embedded on the top of the disinfection box 1, and the hot air blower 6 is connected to the controller. The controller can determine whether there is residual moisture on the surface of the disinfection object entering the disinfection box 1 based on the image data collected by the image sensor 2. When there is residual moisture, the controller can control the hot air blower 6 to turn on so as to dry the disinfection object, thereby preventing the sprayed disinfectant from being diluted by the residual moisture on the surface of the disinfection object. In order to more accurately identify whether there is residual moisture on the surface of the disinfection object through image data, a fill light 7 can be further provided on the top of the disinfection box 1. Figure 1 and Figure 2 As shown; the fill light 7 is used to illuminate the disinfection object entering the disinfection box 1 and generate reflected light on the surface of the disinfection object, so that the controller can identify whether there is residual moisture on the surface of the disinfection object based on the image data under the fill light 7 collected by the image sensor 2 at this time.

[0057] The specific identification method is as follows: according to the image data of the disinfection object collected by the image sensor 2 under the fill light 7, the controller identifies the number of strong reflection points on the surface of the disinfection object. When the number of strong reflection points on the surface of the disinfection object exceeds the preset threshold value (for example, it can be set to 2), it proves that there is residual moisture on the surface of the disinfection object, and it is necessary to turn on the hot air blower 6 to enter the drying process; otherwise, it proves that there is no residual moisture on the surface of the disinfection object, and the drying process can be skipped directly without turning on the hot air blower 6. The identification principle is: when the reflected light is diffuse reflection, it means that the surface of the disinfection object is not contaminated with excess moisture, and when the reflected light is a point-shaped mirror reflection, it means that the surface of the disinfection object is contaminated with excess moisture. After the drying process is started, the image sensor 2 continues to collect image data of the disinfection object until the controller recognizes that there is no residual moisture on the disinfection object and turns off the hot air blower 6 to end the drying process.

[0058] Among them, when the image sensor 2 and the fill light 7 are both arranged on the top of the disinfection box 1, in order to ensure the quality of the image captured by the image sensor 2 under the fill light 7, the angle between the axis of the image sensor 2 and the central axis of the output light of the fill light 7 should be less than or equal to 5 degrees, and the distance between the image sensor 2 and the fill light 7 should be less than or equal to 1 cm.

[0059] In order to accelerate the drying process, an infrared bulb may be provided on the top of the disinfection box 1 to heat the surface of the disinfection object during the drying process, thereby accelerating the drying process and shortening the drying time. Currently, Philips has launched infrared bulbs with powers ranging from 100W to 250W. The greater the power, the larger the bulb diameter. Considering the applicability of the bulb size, a 100W infrared bulb with a smaller diameter may be preferred.

[0060] In addition, the disinfection object may move irregularly in the disinfection box, especially for minors, whose hands may move irregularly in the relatively empty disinfection box. If they move out of the spraying range of the disinfection nozzle, a large amount of disinfectant will be wasted. Considering the above problems, the disinfection device may also include a first baffle and a second baffle, as follows:

[0061] The first baffle and the second baffle are respectively arranged on the left and right sides of the disinfection box 1, and the two baffles are respectively connected to the controller and can move toward or in the opposite direction under the control of the controller, so as to adjust the movable range of the disinfection object in the horizontal direction in the disinfection box 1; wherein, the controller can specifically control the movement of the two baffles through a stepper motor. During the disinfection process, the controller can judge the size of the disinfection object according to the distance detected by the distance sensor 3 and the image data collected by the image sensor 2; if the size is less than the preset size threshold, it can be determined as a minor, then the controller can control the two baffles to move toward each other through a stepper motor, reduce the horizontal movable range of the minor's hand in the disinfection box 1, thereby preventing the minor from moving randomly in the disinfection area and causing inaccurate spraying, ensuring that the smaller disinfection object is as far as possible within the spraying range of the disinfection nozzle, and reducing the waste of disinfectant. When the size is detected to be greater than the preset size threshold again, it can be determined as an adult, then the controller can control the two baffles to move in the opposite direction through a stepper motor to reset, and increase the horizontal movable range again to meet the use needs of adults.

[0062] In summary, the disinfection device provided by the embodiment of the present invention has the following beneficial effects:

[0063] Disinfection nozzles with different spraying ranges are set up for disinfection objects of different sizes. Image sensors and distance sensors are also provided. The image recognition technology combined with distance detection can accurately identify the size of the disinfection object, and then select the corresponding disinfection nozzle to meet the needs of different users;

[0064] Image recognition technology combined with distance detection can accurately identify whether the object entering the disinfection box is a legitimate disinfection object and whether it is staying stably, and reasonably control the nozzle group to spray disinfectant for disinfection, which can prevent illegal disinfection objects and unstable disinfection objects from entering the disinfection box and being sprayed with disinfectant, thereby reducing the waste of disinfectant;

[0065] Through the combination of image sensors and air-drying devices, when image recognition technology is used to identify residual moisture on the surface of the disinfected object, the air-drying device is turned on for drying to avoid dilution of the disinfectant and ensure the disinfection effect. The residual disinfectant liquid gathered at the bottom of the disinfection box can also be evaporated in time to keep it clean.

[0066] Embodiment 2:

[0067] With respect to the disinfection device in the above-mentioned embodiment 1, the embodiment of the present invention further provides a method for using the disinfection device. Figure 4 As shown, the usage method is as follows:

[0068] In the first step, the distance sensor 3 and the controller are used to determine whether a disinfection object has entered the disinfection box 1. If so, the image data of the disinfection object is collected by the image sensor 2, and the controller determines whether the disinfection object is a legal disinfection object.

[0069] Combination Figure 4 , the distance sensor 3 is in a continuous working state so as to detect the distance between the disinfection object and the nozzle group in real time, and transmit the detected distance to the controller, and the controller identifies whether there is a disinfection object entering the disinfection box 1. When the controller identifies that the distance is less than the preset distance threshold, it can be determined that the disinfection object has entered the disinfection box 1. At this time, the image sensor 2 needs to be started, and the image sensor 2 collects the image data of the disinfection object entering the disinfection box 1, and transmits the collected image data to the controller, and the controller identifies whether the disinfection object is a legal disinfection object, that is, whether it is a human hand. Among them, the controller can pre-store a standard image of a legal disinfection object. When receiving the image data, the controller compares the collected image with the standard image to determine whether the disinfection object in the image is a legal disinfection object.

[0070] In the second step, if the disinfection object is a legal disinfection object, the distance sensor 3 and the controller are used to determine whether the disinfection object stays stably in the disinfection box 1.

[0071] When the controller recognizes that the disinfection object entering the disinfection box 1 is legal, the distance sensor 3 continues to detect the distance between the disinfection object and the nozzle group in real time, and transmits the detected distance to the controller, which recognizes whether the disinfection object is stably staying in the disinfection box 1; when it is recognized that the distance remains stable and no longer changes, it can be determined that the disinfection object has stably stayed in the disinfection box 1. When the controller recognizes that the disinfection object entering the disinfection box 1 is illegal, the image sensor 2 is turned off and the process ends.

[0072] The third step is to turn on the fill light 7 when the object to be disinfected stays stably in the disinfection box 1, and judge whether there is residual moisture on the surface of the object to be disinfected based on the image data collected by the image sensor 2 at this time. If there is residual moisture, turn on the hot air blower 6 to dry the surface of the object to be disinfected.

[0073] When the controller recognizes that the object to be sterilized is stably staying in the sterilization box 1, the drying process is started. Figure 4 The process is as follows: turn on the fill light 7, collect the image data of the disinfection object under the fill light 7 through the image sensor 2, and transmit the image data to the controller, and the controller identifies the number of strong reflection points on the surface of the disinfection object according to the image data; if the number of strong reflection points exceeds the preset number threshold, it proves that there is residual moisture on the surface of the disinfection object, then turn on the hot air blower 6 to dry the surface of the disinfection object until there is no residual moisture on the surface of the disinfection object, then turn off the hot air blower 6 to end the drying process, and continue to the fourth step; if the number of strong reflection points does not exceed the preset number threshold, it proves that there is no residual moisture on the surface of the disinfection object, and the drying process can be skipped at this time, and the fourth step can be directly performed. In the drying process, the infrared bulb can also be turned on at the same time to heat the surface of the disinfection object during the drying process, thereby accelerating the drying process and shortening the drying time.

[0074] The fourth step is to determine the size of the disinfection object by combining the data from the distance sensor 3 and the image sensor 2, and control the disinfection nozzles of the corresponding spraying area in the nozzle group by the controller to spray the disinfectant.

[0075] The distance sensor 3 continues to detect the vertical distance between the disinfection object and the nozzle group, and transmits the detected vertical distance to the controller; at the same time, the image sensor 2 continues to collect image data of the disinfection object in the disinfection box 1, and transmits the collected image data to the controller, and the controller combines the image data collected by the image sensor 2 and the vertical distance detected by the distance sensor 3 to identify the size of the disinfection object. Figure 4 , taking the nozzle group including the first nozzle 4 and the second nozzle 5 as an example, if the controller recognizes that the size of the disinfection object is larger than the preset size threshold, it proves that the disinfection object is the hand of an adult, and the controller controls the first nozzle 4 to spray the disinfectant; if the controller recognizes that the size of the disinfection object is smaller than the preset size threshold, it proves that the disinfection object is the hand of a minor, and the controller controls the second nozzle 5 to spray the disinfectant. When the distance sensor 3 detects that the disinfection object has moved out of the disinfection box 1, the spraying of the disinfectant is stopped, and the hot air blower 6 can be turned on for a certain time to evaporate the disinfectant remaining at the bottom of the disinfection box 1 to ensure the cleanliness of the box.

[0076] Furthermore, when the controller recognizes that the size of the disinfection object is smaller than the preset size threshold and determines that the disinfection object is a minor's hand, the first baffle and the second baffle can be controlled by a stepper motor to move toward each other, thereby reducing the horizontal movable range of the minor's hand in the disinfection box 1, and then the second nozzle 5 is controlled to be turned on to spray the disinfectant. In this way, it is possible to prevent the inaccurate spraying caused by the random movement of the minor's hand in the disinfection area, ensure that the smaller disinfection object is within the spraying range of the disinfection nozzle as much as possible, and further reduce the waste of disinfectant.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disinfection device, characterized in that: It comprises a disinfection box (1), an image sensor (2), a distance sensor (3), a nozzle group and a controller, wherein the controller is connected to the image sensor (2), the distance sensor (3) and the nozzle group respectively; The nozzle group includes at least two disinfection nozzles, and the spraying areas of the at least two disinfection nozzles are different, corresponding to disinfection objects of different sizes respectively; The image sensor (2) is used to collect image data of the disinfection object entering the disinfection box (1); the distance sensor (3) is used to measure the distance between the disinfection object and the disinfection box (1); the controller is used to determine the size of the disinfection object based on the distance detected by the distance sensor (3) and the image data collected by the image sensor (2), and then control the corresponding disinfection nozzle to spray disinfectant; The nozzle group comprises a first nozzle (4) and a second nozzle (5), the spraying area of ​​the first nozzle (4) being larger than the spraying area of ​​the second nozzle (5); wherein the spraying area of ​​the first nozzle (4) corresponds to the size of an adult's palm, and the spraying area of ​​the second nozzle (5) corresponds to the size of a minor's palm; The nozzle groups are provided with two, namely a first nozzle group and a second nozzle group; wherein the first nozzle group is provided at the top of the disinfection box (1) and is used to spray disinfectant onto the upper surface of the disinfection object; the second nozzle group is provided at the bottom of the disinfection box (1) and is used to spray disinfectant onto the lower surface of the disinfection object; The disinfection device further comprises a first baffle and a second baffle, the first baffle and the second baffle being respectively arranged on the left and right sides of the disinfection box (1), and the two baffles being respectively connected to the controller and being capable of moving towards or in opposite directions under the control of the controller, so as to adjust the movable range of the disinfection object in the horizontal direction within the disinfection box (1).

2. The disinfection device according to claim 1, characterized in that: The controller is also used to determine whether the disinfection object is a legitimate disinfection object based on the image data collected by the image sensor (2), and at the same time determine whether the disinfection object has entered the disinfection box (1) and whether the disinfection object has stably stayed in the disinfection box (1) based on the distance detected by the distance sensor (3); When it is determined that a legitimate object for disinfection has entered the disinfection box (1) and has remained there stably, the controller controls the nozzle group to spray disinfectant so as to disinfect the legitimate object for disinfection that has entered the disinfection box (1); wherein the legitimate object for disinfection is a human hand.

3. The disinfection device according to any one of claims 1-2, characterized in that: A hot air blower (6) is provided on the top of the disinfection box (1), and the hot air blower (6) is connected to the controller; The controller determines whether there is residual moisture on the surface of the object to be disinfected that enters the disinfection box (1) based on the image data collected by the image sensor (2); if there is residual moisture, the controller controls the hot air blower (6) to turn on so as to dry the object to be disinfected.

4. The disinfection device according to claim 3, characterized in that: A fill light (7) is also provided on the top of the disinfection box (1), and the fill light (7) is used to illuminate the disinfection object entering the disinfection box (1) and generate reflected light on the surface of the disinfection object, so that the controller can judge whether there is residual moisture on the surface of the disinfection object based on the image data captured by the image sensor (2) under the fill light (7); Among them, when the number of strong reflection points on the surface of the disinfected object exceeds a preset threshold, it proves that there is residual moisture on the surface of the disinfected object.

5. The disinfection device according to claim 3, characterized in that: The top of the disinfection box (1) is also provided with an infrared bulb, which is used to heat the surface of the disinfection object during the drying process, thereby accelerating the drying process.

6. A method for using the disinfection device according to any one of claims 1 to 5, characterized in that: include: Using the distance sensor (3) and the controller, it is determined whether a disinfection object has entered the disinfection box (1); if so, image data of the disinfection object is collected using the image sensor (2), and the controller determines whether the disinfection object is a legitimate disinfection object; If the object to be disinfected is a legitimate object to be disinfected, the distance sensor (3) and the controller are used to determine whether the object to be disinfected is stably staying in the disinfection box (1); When the object to be disinfected is stably staying in the disinfection box (1), the fill light (7) is turned on, and based on the image data collected by the image sensor (2) at this time, it is determined whether there is residual moisture on the surface of the object to be disinfected, and if there is residual moisture, the hot air blower (6) is turned on to dry the surface of the object to be disinfected; The size of the disinfection object is determined by combining the data from the distance sensor (3) and the image sensor (2), and the controller controls the disinfection nozzles in the nozzle group with the corresponding spraying area to spray the disinfectant; The controller controls the movement of the two baffles through a stepper motor. If the size is smaller than a preset size threshold, it is determined that the person is a minor. The controller controls the two baffles to move towards each other through the stepper motor, thereby reducing the horizontal movable range of the minor's hand in the disinfection box (1). When the size is detected to be larger than the preset size threshold again, it is determined that the person is an adult. The controller controls the two baffles to move in the opposite direction and reset through the stepper motor, thereby increasing the horizontal movable range again.

7. The method for using the disinfection device according to claim 6, characterized in that: The step of judging whether there is residual moisture on the surface of the object to be disinfected based on the image data collected by the image sensor (2) at this time is specifically as follows: Collecting image data of the disinfection object under the supplementary light (7) through an image sensor (2), and transmitting the image data to a controller; The controller identifies the number of strong reflection points on the surface of the disinfection object according to the image data. If the number of strong reflection points exceeds a preset threshold, it proves that there is residual moisture on the surface of the disinfection object.

8. The method for using the disinfection device according to claim 6, characterized in that: When the nozzle group includes a first nozzle (4) and a second nozzle (5), the size of the disinfection object is judged by combining the data of the distance sensor (3) and the image sensor (2), and the controller controls the disinfection nozzles of the nozzle group with corresponding spraying areas to spray the disinfectant, specifically: The distance sensor (3) detects the vertical distance between the disinfection object and the nozzle group and transmits it to the controller, and the image sensor (2) collects image data of the disinfection object and transmits it to the controller; The controller identifies the size of the disinfection object by combining the image data collected by the image sensor (2) and the vertical distance detected by the distance sensor (3); If the size of the disinfection object is larger than a preset size threshold, the controller controls the first nozzle (4) to be turned on to spray disinfectant; if the size of the disinfection object is smaller than the preset size threshold, the controller controls the second nozzle (5) to be turned on to spray disinfectant.

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