An automatic inductively metered disinfectant dispensing system and method

Abstract

The present application relates to the technical field of inductive metering, and discloses an automatic inductive metering disinfectant dispensing system and method, which realizes dynamic induction and posture recognition of user hand actions through infrared sensing, image recognition and micro-pump control, can intelligently judge the liquid level and target liquid outlet nozzle according to the user's palm area and position, realizes personalized and quantitative liquid outlet operation, and avoids disinfectant waste. Further, the flow monitoring further guarantees the liquid outlet precision, and the display unit displays the remaining amount and / or the validity period in real time, improving the user's convenience and the disinfectant equipment maintainability. In addition, the multiple disinfectant equipment of the target area are centrally managed and data analyzed, the liquid supplementing time is predicted, and the disinfectant resource allocation efficiency of the whole area is improved.

Description

Technical Field

[0001] This invention relates to the field of sensor metering technology, and in particular to an automatic sensor metering disinfectant dispensing system and method. Background Technology

[0002] Quick-drying hand sanitizers are essential hand disinfection products used in hospitals and other medical institutions. Depending on the brand and type, the shelf life of quick-drying hand sanitizers after opening varies.

[0003] Currently, clinical practice often uses handwritten labels on quick-drying hand sanitizers to indicate the opening and expiration dates and times. However, these labels are frequently illegible due to accidental spills when squeezing the sanitizer, or due to busy clinical work leading to forgetting to check the labels, resulting in unused or expired sanitizers not being replaced in time. This is inconvenient for clinical work, and even more so, repeated squeezing by multiple people poses a risk of cross-infection, failing to meet disinfection and isolation requirements. Furthermore, when managing areas with high disinfectant demand, manually tracking disinfectant usage is time-consuming and labor-intensive, indicating a lack of intelligent disinfectant management within these areas. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide an automatic sensing and metering disinfectant dispensing system and method to solve the technical problem that existing institutions cannot intelligently dispense disinfectants based on information such as the expiration date and usage amount.

[0005] The first aspect of the present invention discloses an automatic sensing and metering disinfectant dispensing system, which includes a first sensing unit, a liquid dispensing control unit, a metering unit, a display unit, and a remote management unit;

[0006] The first sensing unit is used to sense and collect the user's hand movements when entering a preset distance range, and send the collected hand movement information within the preset distance range to the liquid dispensing control unit;

[0007] The dispensing control unit is used to control the amount of disinfectant dispensed based on hand movement information within a preset distance range and preset dispensing parameters;

[0008] The metering unit is used to determine the remaining amount and remaining shelf life of the target disinfectant, and serves as the primary usage information;

[0009] The display unit is used to obtain the first usage information of the target disinfectant from the metering unit, and to display the remaining amount and / or remaining shelf life of the target disinfectant based on the first usage information;

[0010] The metering unit is also used to send the first usage information of the target disinfectant and the ID information of the target disinfectant as the second usage information to the remote management unit;

[0011] The remote management unit is used to analyze secondary usage information of all disinfectants within the target area and generate regional management recommendations for disinfectants based on the analysis results.

[0012] Furthermore, the first sensing unit includes an infrared distance sensor and an image acquisition subunit;

[0013] The infrared distance sensor is used to sense whether the user's hand has entered a preset distance range, and the image acquisition subunit is used to acquire image information of the user's hand.

[0014] Furthermore, the first sensing unit also includes a position guidance subunit;

[0015] The position guidance subunit is used to send a guidance signal to guide the user to place their hand in the preset collection area after the infrared distance sensor detects that the user's hand has entered the preset distance range;

[0016] After the user's hand has been within a preset distance range for a preset time threshold, the image acquisition subunit performs the acquisition of image information of the user's hand.

[0017] Furthermore, the liquid dispensing control unit includes an identification subunit and a liquid dispensing volume determination subunit;

[0018] The recognition subunit is used to extract hand posture information, first hand position and palm area value from the collected hand image information, and to determine whether the hand action is a preset posture based on the hand posture information;

[0019] After determining the preset posture, the liquid discharge level is determined by the liquid discharge volume determination subunit based on the palm area value, and the liquid discharge parameters corresponding to the current liquid discharge level are determined by combining the preset liquid discharge parameters; the liquid discharge parameters include the liquid discharge flow rate and the liquid discharge duration.

[0020] Furthermore, the liquid output determination subunit also determines the target liquid output nozzle based on the liquid output parameters corresponding to the current liquid output level; the number of target disinfectant liquid output nozzles is ≥2, and the liquid output flow rate of different liquid output nozzles is different.

[0021] Furthermore, the liquid discharge control unit also includes a liquid discharge execution subunit, which includes a micro pump and a flow monitoring component;

[0022] The liquid dispensing execution subunit is used to drive a micro pump to output disinfectant from the target liquid dispensing nozzle according to the liquid dispensing parameters corresponding to the current liquid dispensing level;

[0023] The flow monitoring component is used to monitor the actual liquid output in real time and make compensation adjustments when it deviates from the preset distance range.

[0024] Furthermore, before dispensing disinfectant through the target dispensing nozzle, the dispensing execution subunit determines a second hand position based on the first hand position and the target dispensing nozzle position; the second hand position is the geometric deviation of the current hand center relative to the target dispensing nozzle, used to represent the relative positional relationship between the two in space.

[0025] Adjust the direction of the target dispensing nozzle according to the position of the second hand, and output the disinfectant according to the adjusted target dispensing nozzle direction.

[0026] Furthermore, the process by which the metering unit determines the remaining shelf life of the target disinfectant includes:

[0027] Obtain the injection date and expiration date of the target disinfectant from the remote management unit;

[0028] The remaining validity period is updated in days based on the injection date and validity period.

[0029] Furthermore, the process by which the remote management unit analyzes secondary usage information of all disinfectants within the target area specifically includes:

[0030] Based on the remaining amount information of all disinfectants in the target area, identify all disinfectant IDs whose remaining amount is lower than a preset remaining amount threshold, and generate a first disinfectant ID list;

[0031] Based on the remaining expiration information of all disinfectants in the target area, identify all disinfectant IDs with remaining expiration values ​​below a preset threshold, generate a second disinfectant ID list, and combine the first disinfectant ID list and the second disinfectant ID list into a first disinfectant ID list to be replaced;

[0032] The usage rate of each disinfectant is determined based on the injection time, injection volume, current remaining volume, and current date of each disinfectant in the list of the first disinfectant to be replaced. The depletion time of each disinfectant is predicted based on the usage rate, and a replenishment schedule for each disinfectant is formed based on the depletion time.

[0033] The second aspect of this invention discloses an automatic sensing and metering disinfectant dispensing method, which is applied to the system disclosed in the first aspect, and the method includes:

[0034] It senses and collects hand gesture information when the user enters a preset distance range;

[0035] The amount of disinfectant dispensed is controlled based on hand movement information within a preset distance range and preset dispensing parameters;

[0036] Determine the remaining quantity and remaining shelf life of the target disinfectant and use this as primary usage information;

[0037] The display unit displays the remaining amount and / or remaining shelf life of the target disinfectant based on the first usage information;

[0038] Based on the analysis of the first use information and ID information of all disinfectants in the target area, regional management recommendations for disinfectants are generated based on the analysis results.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] This invention utilizes infrared sensing, image recognition, and micro-pump control to achieve dynamic sensing and posture recognition of user hand movements. It intelligently determines the dispensing level and target nozzle based on the user's palm area and position, enabling personalized and quantitative dispensing operations and preventing disinfectant waste. Flow monitoring further ensures dispensing accuracy, and a display unit shows the remaining quantity and / or expiration date in real time, improving user convenience and the maintainability of the disinfection equipment. Furthermore, it centrally manages and analyzes data from multiple disinfection devices in a target area, predicting replenishment times and thus improving the overall efficiency of disinfection resource allocation. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0042] Figure 1 This is a schematic diagram of an automatic sensing and metering disinfectant dispensing system disclosed in Embodiment 1 of the present invention. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0044] Example 1

[0045] The first aspect of this invention discloses an automatic sensor-based disinfectant dispensing system; please refer to [link to relevant documentation]. Figure 1 , Figure 1 This is a schematic diagram of an automatic sensing and metering disinfectant dispensing system disclosed in an embodiment of the present invention. The system includes a first sensing unit, a liquid dispensing control unit, a metering unit, a display unit, and a remote management unit.

[0046] The first sensing unit is used to sense and collect the user's hand movements when entering a preset distance range, and send the collected hand movement information within the preset distance range to the liquid dispensing control unit;

[0047] The dispensing control unit is used to control the amount of disinfectant dispensed based on hand movement information within a preset distance range and preset dispensing parameters;

[0048] The metering unit is used to determine the remaining amount and remaining shelf life of the target disinfectant, and serves as the primary usage information;

[0049] The display unit is used to obtain the first usage information of the target disinfectant from the metering unit, and to display the remaining amount and / or remaining shelf life of the target disinfectant based on the first usage information;

[0050] The metering unit is also used to send the first usage information of the target disinfectant and the ID information of the target disinfectant as the second usage information to the remote management unit;

[0051] The remote management unit is used to analyze secondary usage information of all disinfectants within the target area and generate regional management recommendations for disinfectants based on the analysis results.

[0052] Furthermore, the first sensing unit includes an infrared distance sensor and an image acquisition subunit. The infrared distance sensor is used to sense whether the user's hand has entered a preset distance range, and the image acquisition subunit is used to acquire image information of the user's hand.

[0053] In this embodiment of the invention, the first sensing unit includes an infrared distance sensor and an image acquisition subunit. These two components work together to achieve accurate sensing of the user's hand movements. Specifically, the infrared distance sensor is used to scan the disinfectant device, preferably a pre-defined spatial area below it, in real time. The distance range is preferably set to a spatial area 5cm to 15cm from the nozzle, serving as a preset distance range to ensure coverage of most adult users' hand movements while effectively preventing false triggering. Upon detecting that the user's hand has entered this preset distance range, the image acquisition subunit is activated, capturing an image of the current hand area.

[0054] Furthermore, the first sensing unit also includes a position guidance subunit. The position guidance subunit is used to issue a guidance signal to guide the user to place their hand in a preset acquisition area after the infrared distance sensor senses that the user's hand has entered a preset distance range. After the duration of the user's hand being within the preset distance range reaches a preset time threshold, the image acquisition subunit performs the acquisition of image information of the user's hand.

[0055] In a preferred embodiment of the present invention, the first sensing unit further includes a position guidance subunit, used to guide the user to place their hand in the optimal area for image acquisition and disinfectant output when the user approaches. Specifically, when the infrared distance sensor detects that the user's hand has entered a preset distance range, the system activates the position guidance subunit and emits a visual guidance signal, preferably a softly lit LED light, to guide the user to place their hand naturally in the designated position. This position guidance light visually forms a clear sensing area, which can effectively reduce user posture deviation and improve image recognition accuracy.

[0056] When the system detects that the user's hand has remained stable within the preset acquisition area for a set time threshold (e.g., 1 second), the image acquisition subunit automatically performs an image acquisition operation, capturing the current hand image information for subsequent recognition and liquid dispensing control. This design avoids misidentification caused by hand shaking or misplacement, effectively improving the stability of recognition and the accuracy of liquid dispensing response.

[0057] Furthermore, as a further preferred embodiment, the disinfectant device also provides prompts for a standard hand posture, preferably with the palm facing upwards and fingers slightly curved upwards. The prompts can be made by attaching illustrative information to the disinfectant device or by using an audio prompt unit. Once the infrared distance sensor detects that the user's hand has entered a preset distance range, the audio prompt unit plays a prompt indicating the correct hand posture. When a position guidance subunit is present, the illustrative and audio prompts can include guidance on hand placement following a guiding signal. For example, the user can be prompted to place their palm in the direction of a guiding light. In this case, the preset acquisition area is the area of ​​the hand where the guiding light can appear in the palm.

[0058] Understandably, in practical implementation, automatic sensor-based disinfectant dispensing systems also include a main controller for localized, closed-loop control of the system's sensing and dispensing processes. Specifically, the main controller manages the coordinated workflow of the infrared distance sensor, image acquisition subunit, position guidance subunit, dispensing control unit, and display unit. For example, when the infrared distance sensor detects that a user's hand has entered a preset distance range, the main controller triggers the position guidance subunit to issue a guidance signal and starts an internal timer to monitor the stable duration of the user's hand within the preset distance range. When the timing result reaches a preset time threshold (e.g., 1 second), the main controller automatically triggers the image acquisition subunit to perform image acquisition.

[0059] Furthermore, the liquid dispensing control unit includes an identification subunit and a liquid dispensing volume determination subunit. The identification subunit is used to extract hand posture information, a first hand position, and a palm area value from the acquired hand image information, and to determine whether the hand movement is a preset posture based on the hand posture information.

[0060] After determining the preset posture, the liquid discharge level is determined by the liquid discharge volume determination subunit based on the palm area value, and the liquid discharge parameters corresponding to the current liquid discharge level are determined by combining the preset liquid discharge parameters; the liquid discharge parameters include the liquid discharge flow rate and the liquid discharge duration.

[0061] In this embodiment of the invention, the liquid dispensing control unit includes an identification subunit and a liquid dispensing volume determination subunit, used to implement an intelligent liquid dispensing control strategy based on the user's hand features. The identification subunit is used to extract core visual features from the hand image information acquired by the image acquisition subunit. These visual features include hand posture information, a first hand position, and a palm area value.

[0062] Specifically, the recognition subunit integrates a lightweight convolutional neural network (CNN) model as the core image recognition algorithm, used to extract key features for liquid discharge control from the hand image acquired by the image acquisition subunit. To ensure efficient operation of the model on resource-constrained embedded devices, the preferred network architecture is MobileNet or ShuffleNet series architecture, which features small parameter count and high computational efficiency.

[0063] First, during the training phase of the CNN model, a large-scale image dataset containing various real-world hand poses (such as palm up, slightly bent fingers, palm covering the central area, etc.) was collected, and the hand regions in the images were labeled with pose labels, key joint positions, and hand boundary contours. Then, the labeled image data was input into the CNN model for supervised learning training. Through multiple iterations, the model parameters were optimized to ensure accurate recognition of gesture types, skeleton coordinates, and hand boundary regions in actual operation. During training, the cross-entropy loss function was used for pose classification optimization, combined with the L2 loss function to optimize key point localization accuracy. Early stopping and validation set evaluation mechanisms were also implemented to improve generalization ability.

[0064] During the model inference stage, the CNN model first performs multi-scale image feature extraction and outputs feature maps for subsequent structured information extraction. Specifically, it extracts the position information of key finger joints through skeleton point detection and constructs pose vectors; and completes hand region segmentation and contour extraction through boundary detection.

[0065] To accurately convert the pixel area in an image into the actual physical area, this invention introduces a camera viewpoint and preset distance model, which is established as follows: During the equipment installation and debugging phase, based on the camera's installation angle, resolution, focal length, and shooting distance, multiple palm image samples of known sizes are pre-acquired using a standard ruler or calibration board. A fitting function relationship between the image pixel area and the actual physical area is constructed, forming a pixel-area conversion model. This model is written into the control chip when the equipment leaves the factory. During operation, the corresponding conversion ratio is automatically selected or calibrated based on the position parameters of each image acquisition, ensuring that the area calculation results have practical significance.

[0066] Meanwhile, the position of the first hand is obtained based on the relative spatial deviation between the geometric center coordinates of the hand region in the image and the stored center coordinates of the liquid outlet nozzle assembly, and the orientation is estimated by projection transformation or triangulation.

[0067] Furthermore, the recognition subunit compares the extracted hand gesture information with a preset standard gesture template, using a cosine similarity gesture matching index to determine whether the current gesture meets the preset gesture requirements. Only when the judgment result is a match does the recognition subunit output a liquid dispensing request signal to the liquid dispensing volume determination subunit.

[0068] Upon receiving a dispensing request signal, the dispensing volume determination subunit determines the hand size based on the palm area value output by the recognition subunit and maps it to a set dispensing level range (e.g., less than A cm² is level 1 dispensing, medium area is level 2 dispensing, and large area is level 3 dispensing). Each level corresponds to a set of predefined dispensing parameter combinations, including a specific dispensing flow rate value (e.g., 1 mL / s) and dispensing duration (e.g., 1 second), thereby achieving precise dispensing control.

[0069] Through the above-mentioned liquid level identification and parameter matching mechanism, this invention can combine the user's hand posture and palm area to achieve precise quantitative dispensing of disinfectant based on user characteristics, thereby improving the user experience and resource utilization efficiency.

[0070] As another implementation, the present invention introduces a viewpoint-depth calibration function. The following improved model is proposed:

[0071]

[0072]

[0073] in, The actual physical area of ​​the palm is expressed in cm². This represents the pixel area of ​​the hand region in the image, expressed in pixels. This is a real-time measurement of the distance between the camera and the hand, in centimeters. The angle between the camera and the plane of the hand, in degrees; , , The calibration parameters are obtained from regression fitting of multiple sample images and are used to correct for nonlinear changes. These are calibration constants; For calibration reference distance.

[0074] In this implementation, by introducing a nonlinear function of camera viewpoint and target depth, the area estimation errors caused by image distortion, imaging tilt, and depth variations are effectively corrected, significantly improving the accuracy of palm physical area estimation. In actual operation, this formula can adapt to the user's natural interactive actions at different positions and angles, thereby achieving more sensitive and accurate sensor triggering and personalized liquid dispensing control logic, enhancing product adaptability and user experience.

[0075] Furthermore, the liquid output determination subunit also determines the target liquid output nozzle based on the liquid output parameters corresponding to the current liquid output level. Specifically, there are at least two target disinfectant liquid output nozzles, and the different nozzles have different liquid output flow rates.

[0076] In this invention, the dispensing volume determination subunit not only selects the corresponding dispensing parameters based on the identified dispensing level, but also further determines the corresponding target dispensing nozzle for performing the actual disinfectant dispensing operation. Preferably, the system has two or more dispensing nozzles, each with a different dispensing flow rate, covering multiple levels of needs from small to large doses. When the system identifies the user's hand posture as a preset posture, and combines the dispensing level determined by the palm area value, the dispensing volume determination subunit will select the dispensing nozzle matching the current dispensing level based on the preset level-dispensing parameter-dispensing nozzle mapping relationship. This setting can quickly and accurately match the most suitable dispensing channel according to the user's actual needs, effectively improving dispensing accuracy, control flexibility, and response speed.

[0077] Furthermore, the liquid discharge control unit also includes a liquid discharge execution subunit, which includes a micro pump and a flow monitoring component;

[0078] The liquid dispensing execution subunit is used to drive a micro pump to output disinfectant from the target liquid dispensing nozzle according to the liquid dispensing parameters corresponding to the current liquid dispensing level;

[0079] The flow monitoring component is used to monitor the actual liquid output in real time and make compensation adjustments when it deviates from the preset distance range.

[0080] In this embodiment of the invention, in order to ensure that the dosage of disinfectant dispensed each time is consistent with the discharge volume determined according to the discharge parameters, a flow monitoring component is also provided to monitor the discharge process in real time.

[0081] Specifically, the flow monitoring component preferably includes a miniature flow sensor installed in the liquid path between the miniature pump and the dispensing nozzle. This sensor monitors the actual dispensing flow rate and cumulative dispensing volume by detecting the volume of liquid flowing through it per unit time. If a deviation is detected between the actual dispensing volume and the theoretical value set in the dispensing parameters (e.g., due to pipe blockage, air bubbles, pump efficiency fluctuations, etc.), a feedback control mechanism dynamically adjusts the driving duration or flow rate of the miniature pump to ensure that the final output liquid volume meets the set value, thereby achieving precise dispensing and error compensation. Furthermore, the feedback from the flow monitoring component can also be used to identify whether there is a malfunction in the current disinfectant equipment.

[0082] In this case, the remaining amount of disinfectant can be estimated using the flow monitoring component and the remote management unit.

[0083] Specifically, each time the disinfectant is replaced or injected, the initial filling volume of the disinfectant (e.g., 1000ml) is recorded by the remote management unit; then the actual dispensing volume is obtained by the flow monitoring component and accumulated and statistically analyzed in the dispensing control unit; finally, the metering unit or the remote management unit calculates the difference.

[0084] Furthermore, before dispensing disinfectant through the target dispensing nozzle, the dispensing execution subunit determines a second hand position based on the first hand position and the target dispensing nozzle position; the second hand position is the geometric deviation of the current hand center relative to the target dispensing nozzle, used to represent the relative positional relationship between the two in space;

[0085] Adjust the direction of the target dispensing nozzle according to the position of the second hand, and output the disinfectant according to the adjusted target dispensing nozzle direction.

[0086] In this embodiment of the invention, to improve the accuracy of disinfectant dispensing and user experience, the dispensing execution subunit introduces a dynamic adjustment mechanism for the target nozzle direction before the spraying operation. Specifically, based on the identified first hand position and the currently selected target dispensing nozzle position, the spatial geometric deviation between the hand and the nozzle is calculated, and a second hand position is determined accordingly. The second hand position expresses the directional deviation of the current hand center point relative to the target nozzle center point. Based on this deviation data, the nozzle's dispensing direction is adjusted by controlling the nozzle's movable mechanism (such as a stepper motor or micro servo motor), making the spray stream more accurately aligned with the center area of ​​the user's palm, reducing liquid splashing and waste, and improving ease of use and comfort.

[0087] Furthermore, the process by which the metering unit determines the remaining shelf life of the target disinfectant includes:

[0088] Obtain the injection date and expiration date of the target disinfectant from the remote management unit;

[0089] The remaining validity period is updated in days based on the injection date and validity period.

[0090] In this embodiment of the invention, each time new disinfectant is injected into the disinfectant device, the injection volume and expiration date can be input via a remote management unit and / or a display screen. Preferably, when the actual date of disinfectant replenishment differs from the replenishment date suggested by the remote management unit, the actual content input on the display screen shall prevail and be synchronized in the remote management unit. It is understood that the remote management unit is integrated into the terminal device, which can be an intelligent management terminal or an embedded control motherboard with data processing and communication functions, used to locally receive, analyze, and generate management suggestions for disinfectant usage information.

[0091] As a further preferred embodiment, when the remaining quantity is lower than a preset remaining quantity threshold, or the remaining validity period is lower than a preset remaining validity period threshold, a reminder is issued through the display unit.

[0092] Furthermore, the process by which the remote management unit analyzes secondary usage information of all disinfectants within the target area specifically includes:

[0093] Based on the remaining amount information of all disinfectants in the target area, identify all disinfectant IDs whose remaining amount is lower than a preset remaining amount threshold, and generate a first disinfectant ID list;

[0094] Based on the remaining expiration information of all disinfectants in the target area, identify all disinfectant IDs with remaining expiration values ​​below a preset threshold, generate a second disinfectant ID list, and combine the first disinfectant ID list and the second disinfectant ID list into a first disinfectant ID list to be replaced;

[0095] The usage rate of each disinfectant is determined based on the injection time, injection volume, current remaining volume, and current date of each disinfectant in the list of the first disinfectant to be replaced. The depletion time of each disinfectant is predicted based on the usage rate, and a replenishment schedule for each disinfectant is formed based on the depletion time.

[0096] In this embodiment of the invention, the remote management unit is used to centrally manage and intelligently analyze the second usage information uploaded by multiple disinfectant devices within the target area. The second usage information includes the first usage information of the target disinfectant (such as the remaining quantity and remaining shelf life) and its unique ID code.

[0097] Specifically, the remote management unit first filters out disinfectants with remaining quantities below a preset threshold based on the remaining quantity information reported by all disinfectant devices, forming a first disinfectant ID list. Next, based on the remaining expiration date information uploaded by each device, it filters out disinfectants whose expiration dates are about to expire (below the expiration date threshold), forming a second disinfectant ID list. These two lists are then merged to obtain a first disinfectant ID list to be replaced, which serves as the key management target requiring priority scheduling.

[0098] Based on this, the remote management unit further analyzes the historical usage records of the disinfectant to be replaced, obtains data such as injection time, injection volume, and current remaining volume, calculates the average usage rate in the recent period based on the current date, and combines a linear regression algorithm to predict the expected depletion time of the disinfectant for each device, thereby constructing an individual-level replenishment schedule. By setting priorities, the replacement list is sorted according to the earliest predicted depletion time, and replenishment suggestions and reminders are output.

[0099] Furthermore, to enhance global optimization capabilities, this embodiment of the invention also implements allocation strategies based on regional usage trends. For example, if the disinfectant usage rate in a certain local area (such as the outpatient entrance or surgical corridor) is detected to be significantly higher than in other areas, the remote management unit can proactively adjust the replenishment frequency in that area. Simultaneously, it can instruct the priority transfer of remaining disinfectants nearing their expiration dates from other areas to this high-frequency-use area, thus avoiding waste and improving resource utilization. In addition, the consumption trends of disinfectants in each area are categorized, such as "steady-state use," "sudden increase," and "slow consumption," and replenishment plans, procurement cycles, or inventory distribution strategies are optimized accordingly, thereby achieving truly refined and intelligent material management.

[0100] Through the above operations, the remote management unit not only has the ability to predict the risks of using single disinfectant equipment, but also realizes regional resource scheduling and supply optimization, significantly improving the efficiency and scientific nature of disinfectant replenishment management, reducing the cost of human intervention, and ensuring the continuity and safety of disinfection material supply.

[0101] Example 2

[0102] Unlike Embodiment 1, in this embodiment, to improve the accuracy and real-time performance of disinfectant residue monitoring, a second sensing unit is further provided for direct detection of the actual remaining amount of disinfectant. This second sensing unit can be integrated into the disinfectant container or liquid storage pipeline structure, and monitors liquid level changes through non-contact or contact measurement methods.

[0103] Specifically, the second sensing subunit can use sensing elements such as ultrasonic level sensors, capacitive level detection modules, or photoelectric liquid level sensors to periodically detect changes in the vertical height or volume of the liquid level in the container. Based on the measured liquid level height and the cross-sectional structural parameters of the container, the current remaining amount is calculated in real time and output as a digital value to be fed back to the metering unit.

[0104] Compared to indirect methods that rely on the cumulative calculation of total output volume, this method can significantly reduce the cumulative errors caused by output errors and non-standardized replenishment operations. It maintains high accuracy in detecting remaining volume during long-term operation and is particularly suitable for applications where the timing of replenishment is critical.

[0105] In addition, to enhance intelligence, the second sensing unit can be linked with the main controller to automatically trigger the warning mechanism of the remote management unit when the remaining amount is lower than the preset safety threshold, or to issue a reminder message on the display unit so that maintenance personnel can replace or replenish the disinfectant in a timely manner, further ensuring continuity of use and public health safety.

[0106] Example 3

[0107] A second aspect of this invention discloses an automatic sensing and metering method for dispensing disinfectant, the method comprising:

[0108] It senses and collects hand gesture information when the user enters a preset distance range;

[0109] The amount of disinfectant dispensed is controlled based on hand movement information within a preset distance range and preset dispensing parameters;

[0110] Determine the remaining quantity and remaining shelf life of the target disinfectant and use this as primary usage information;

[0111] The display unit displays the remaining amount and / or remaining shelf life of the target disinfectant based on the first usage information;

[0112] Based on the analysis of the first use information and ID information of all disinfectants in the target area, regional management recommendations for disinfectants are generated based on the analysis results.

[0113] It should be noted that the specific implementation process of Embodiment 3 is similar to that of Embodiments 1 and 2, and will not be repeated in this embodiment.

[0114] Finally, it should be noted that the above-described embodiments include multiple parallel implementations of the present invention. Deleting or otherwise adjusting one or more implementations will not affect the implementation of the solution. Furthermore, the automatic sensing and metering disinfectant dispensing system and method disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic sensor-metered disinfectant dispensing system, characterized in that, The system includes a first sensing unit, a liquid dispensing control unit, a metering unit, a display unit, and a remote management unit; The first sensing unit includes an infrared distance sensor and an image acquisition subunit; the infrared distance sensor is used to sense whether the user's hand has entered a preset distance range, and the image acquisition subunit is used to acquire image information of the user's hand; The dispensing control unit controls the amount of disinfectant dispensed based on the user's hand image information within a preset distance range and preset dispensing parameters; the hand image information includes hand posture information, first hand position, and palm area value; wherein, the actual physical area of ​​the palm area value is determined by the following viewpoint-depth calibration function: ， in, This refers to the actual physical area of ​​the palm, in cm². This represents the pixel area of ​​the hand region in the image, expressed in pixels. This is a real-time measurement of the distance between the camera and the hand, in centimeters. The angle between the camera and the plane of the hand, in degrees; , , The calibration parameters are obtained from regression fitting of multiple sample images and are used to correct for nonlinear changes. These are calibration constants; For calibration reference distance; The metering unit is used to determine the remaining amount and remaining shelf life of the target disinfectant, and serves as the primary usage information; The display unit is used to obtain the first usage information of the target disinfectant from the metering unit, and to display the remaining amount and / or remaining shelf life of the target disinfectant based on the first usage information; The remote management unit is used to identify all disinfectant IDs with remaining amounts below a preset threshold based on the remaining amount information of all disinfectants in the target area, and generate a first disinfectant ID list; Based on the remaining expiration information of all disinfectants in the target area, identify all disinfectant IDs with remaining expiration values ​​below a preset threshold, generate a second disinfectant ID list, and combine the first disinfectant ID list and the second disinfectant ID list into a first disinfectant ID list to be replaced; The usage rate of each disinfectant is determined based on the injection time, injection volume, current remaining volume, and current date of each disinfectant in the list of the first disinfectant to be replaced. The depletion time of each disinfectant is predicted based on the usage rate, and a replenishment schedule for each disinfectant is formed based on the depletion time. Based on the disinfectant usage rate, high-frequency and low-frequency areas are identified, and disinfectants with remaining expiration dates nearing their expiration date in low-frequency areas are preferentially transferred to high-frequency areas.

2. The automatic sensing and metering disinfectant dispensing system according to claim 1, characterized in that, The first sensing unit further includes a position guidance subunit; The position guidance subunit is used to send a guidance signal to guide the user to place their hand in the preset collection area after the infrared distance sensor detects that the user's hand has entered the preset distance range; After the user's hand has been within a preset distance range for a preset time threshold, the image acquisition subunit performs the acquisition of image information of the user's hand.

3. The automatic sensing and metering disinfectant dispensing system according to claim 2, characterized in that, The liquid discharge control unit includes an identification subunit and a liquid discharge volume determination subunit; The recognition subunit is used to extract hand posture information, first hand position and palm area value from the collected hand image information, and to determine whether the hand action is a preset posture based on the hand posture information; After determining the preset posture, the liquid discharge level is determined by the liquid discharge volume determination subunit based on the palm area value, and the liquid discharge parameters corresponding to the current liquid discharge level are determined by combining the preset liquid discharge parameters; the liquid discharge parameters include the liquid discharge flow rate and the liquid discharge duration.

4. The automatic sensing and metering disinfectant dispensing system according to claim 3, characterized in that, The liquid output determination subunit also determines the target liquid output nozzle based on the liquid output parameters corresponding to the current liquid output level; the number of target disinfectant liquid output nozzles is ≥2, and the liquid output flow rate of different liquid output nozzles is different.

5. The automatic sensing and metering disinfectant dispensing system according to claim 4, characterized in that, The liquid discharge control unit further includes a liquid discharge execution subunit, which includes a micro pump and a flow monitoring component; The liquid dispensing execution subunit is used to drive a micro pump to output disinfectant from the target liquid dispensing nozzle according to the liquid dispensing parameters corresponding to the current liquid dispensing level; The flow monitoring component is used to monitor the actual liquid output in real time and make compensation adjustments when it deviates from the preset distance range.

6. The automatic sensing and metering disinfectant dispensing system according to claim 5, characterized in that, Before dispensing disinfectant through the target dispensing nozzle, the dispensing execution subunit also determines a second hand position based on the first hand position and the target dispensing nozzle position; the second hand position is the geometric deviation of the current hand center relative to the target dispensing nozzle, used to represent the relative positional relationship between the two in space; Adjust the direction of the target dispensing nozzle according to the position of the second hand, and output the disinfectant according to the adjusted target dispensing nozzle direction.

7. The automatic sensing and metering disinfectant dispensing system according to claim 1, characterized in that, The process by which the metering unit determines the remaining shelf life of the target disinfectant includes: Obtain the injection date and expiration date of the target disinfectant from the remote management unit; The remaining validity period is updated in days based on the injection date and validity period.

8. An automatic sensor-metered disinfectant dispensing method, said method being applied to the system described in any one of claims 1-7, characterized in that, The method includes: It senses and collects image information of the user's hand when they enter a preset distance range; The disinfectant dispensing volume is controlled based on hand image information within a preset distance range and preset dispensing parameters; the hand image information includes hand posture information, first hand position, and palm area value; wherein, the actual physical area of ​​the palm area value is determined by the following viewpoint-depth calibration function: ， in, This refers to the actual physical area of ​​the palm, in cm². This represents the pixel area of ​​the hand region in the image, expressed in pixels. This is a real-time measurement of the distance between the camera and the hand, in centimeters. The angle between the camera and the plane of the hand, in degrees; , , The calibration parameters are obtained from regression fitting of multiple sample images and are used to correct for nonlinear changes. These are calibration constants; For calibration reference distance; Determine the remaining quantity and remaining shelf life of the target disinfectant and use this as primary usage information; The display unit displays the remaining amount and / or remaining shelf life of the target disinfectant based on the first usage information; Based on the remaining amount information of all disinfectants in the target area, identify all disinfectant IDs whose remaining amount is lower than a preset remaining amount threshold, and generate a first disinfectant ID list; Based on the remaining expiration information of all disinfectants in the target area, identify all disinfectant IDs with remaining expiration values ​​below a preset threshold, generate a second disinfectant ID list, and combine the first disinfectant ID list and the second disinfectant ID list into a first disinfectant ID list to be replaced; The usage rate of each disinfectant is determined based on the injection time, injection volume, current remaining volume, and current date of each disinfectant in the list of the first disinfectant to be replaced. The depletion time of each disinfectant is predicted based on the usage rate, and a replenishment schedule for each disinfectant is formed based on the depletion time. Based on the disinfectant usage rate, high-frequency and low-frequency areas are identified, and disinfectants with remaining expiration dates nearing their expiration date in low-frequency areas are preferentially transferred to high-frequency areas.

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