A liquid output control method and device, a liquid output device, and a storage medium

Abstract

The application relates to the technical field of intelligent control, and discloses a liquid outlet control method and device, a liquid outlet equipment and a storage medium, which are applied to a liquid outlet equipment comprising an equipment body, a liquid outlet arranged on the equipment body, a waste liquid collecting device and a supporting structure. The supporting structure is arranged at a position below the liquid outlet to place a liquid container, and the waste liquid collecting device is arranged below the supporting structure to collect waste liquid. The method comprises the following steps: in the working process of the liquid outlet equipment, the initial weight of the waste liquid collecting device is acquired, and the current weight of liquid in the waste liquid collecting device is monitored; the weight deviation between the initial weight and the current weight is calculated, and whether the weight of the waste liquid collecting device changes is determined based on the deviation; if the weight changes, it is determined that the liquid outlet equipment has an abnormality, the liquid outlet is controlled to stop discharging liquid, and the equipment is prewarned. The application can accurately identify the weight change caused by the liquid leakage, liquid overflow and other abnormalities of the liquid container, improve the identification accuracy, improve the liquid outlet effect, reduce resource waste and improve the user experience.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology, specifically to a liquid dispensing control method, device, dispensing equipment, and storage medium. Background Technology

[0002] Currently, various liquid dispensing devices offer automatic dispensing functions. Taking coffee machines as an example, when a user wants coffee, they simply place the coffee container under the dispensing tube (the nozzle), press the desired coffee type on the display panel, and wait a moment to enjoy their delicious beverage. However, if the container's capacity is less than the selected dispensing volume, coffee may overflow, staining the container and negatively impacting the user experience. Furthermore, the machine vibrates during operation, causing the coffee container to shift. Additionally, if the user removes or knocks over the container while it's making hot coffee, spilled coffee may occur, potentially scalding the user and causing a poor experience. Summary of the Invention

[0003] In view of this, the present invention provides a liquid dispensing control method, device, dispensing equipment and storage medium to solve the problems of existing liquid dispensing equipment having defects such as container displacement and overflow when the cup is full during operation, which can easily lead to liquid leakage and container contamination, seriously affecting the liquid dispensing control effect of the equipment and making it difficult to meet the user's needs.

[0004] In a first aspect, the present invention provides a liquid discharge control method applied to a liquid discharge device. The liquid discharge device includes a device body and a liquid outlet, a waste liquid collection device, and a support structure disposed on the device body. The support structure is disposed below the liquid outlet for placing a liquid container, and the waste liquid collection device is disposed below the support structure for collecting waste liquid. The method includes:

[0005] During the operation of the liquid discharge equipment, the initial weight of the waste liquid collection device is obtained, and the current weight of the liquid in the waste liquid collection device is monitored.

[0006] Calculate the weight deviation between the initial weight and the current weight, and determine whether the waste liquid collection device has undergone a weight change based on the weight deviation;

[0007] When a change in weight occurs in the waste liquid collection device, an abnormality is detected in the liquid outlet equipment. The liquid outlet is then stopped from discharging liquid, and the liquid outlet equipment is activated to issue an early warning.

[0008] The liquid discharge control method provided by this invention focuses on the dynamic changes in the weight of the waste liquid collection device. Specifically, by monitoring the weight changes of the waste liquid collection device in real time, an anomaly can be determined when the weight of the waste liquid collection device changes. This method can comprehensively cover abnormal scenarios that may lead to liquid leakage and container contamination due to abnormal waste liquid overflow, thereby providing early warning of risks such as leakage of liquid containers and overflow of waste liquid, greatly improving the timeliness of anomaly detection. The above-mentioned use of weight monitoring of the waste liquid collection device to achieve abnormal liquid discharge control not only improves the accuracy, sensitivity, and comprehensiveness of equipment anomaly identification, but also improves the control effect of equipment liquid discharge, thereby reducing resource waste and significantly improving the user experience.

[0009] In one optional implementation, determining whether the waste liquid collection device has undergone a weight change based on weight deviation includes:

[0010] Determine if the weight deviation is greater than a preset weight threshold;

[0011] If the weight deviation is greater than the preset weight threshold, it is determined that the waste liquid collection device has undergone a weight change.

[0012] This invention calculates weight deviation based on the initial weight of the waste liquid collection device itself, which can accurately adapt to waste liquid collection devices of different specifications and materials, avoiding detection deviations caused by differences in the devices themselves, and making the judgment of weight changes more in line with actual scenarios. At the same time, the weight deviation is compared with its preset threshold to determine the weight change of the waste liquid collection device, which can improve the objectivity and reliability of the detection, thereby improving the liquid discharge control accuracy of subsequent equipment.

[0013] In one optional implementation, the liquid discharge control method further includes:

[0014] The system calculates the first time corresponding to the weight change of the waste liquid collection device, and determines that the weight change of the waste liquid collection device has occurred when the first time exceeds a first preset time threshold.

[0015] This invention also considers that in real-world scenarios, the weight of the waste liquid collection device may fluctuate momentarily due to non-abnormal factors, such as sensor measurement errors. Such momentary fluctuations are usually short-lived and do not pose substantial risks such as liquid leakage or overflow. If they are directly judged as a change in the weight of the waste liquid collection device, the false judgment rate will be increased, which will also cause unnecessary shutdowns and warnings. Therefore, by monitoring whether the duration of the weight change of the waste liquid collection device meets the set time threshold as the final judgment condition, momentary fluctuations can be filtered out, the probability of false judgment can be reduced, and the accurate identification of the corresponding weight change of the waste liquid collection device can be achieved.

[0016] In one optional implementation, during the operation of the liquid dispensing device, the liquid dispensing control method further includes:

[0017] Detect the current position and orientation of the liquid container;

[0018] Detect whether the liquid container has undergone a state change based on its current position and current orientation;

[0019] When a change in the state of a liquid container occurs, if an abnormality is detected in the liquid outlet equipment, the following steps are taken: control the liquid outlet to stop discharging liquid, and control the liquid outlet equipment to issue an early warning.

[0020] This invention not only considers monitoring the weight of the waste liquid collection device to determine whether there is an abnormality in the liquid dispensing equipment, but also takes into account the dynamic changes in the position of the liquid container. When either the position of the liquid container or the weight of the waste liquid collection device changes, an abnormality in the liquid dispensing equipment can be determined. It can comprehensively cover abnormal scenarios that may cause liquid leakage and container contamination, such as displacement due to accidental contact, risk of tipping, and abnormal overflow of waste liquid. This helps to reduce the problem of missed detection by single-dimensional detection, greatly improves the comprehensiveness, accuracy, sensitivity and timeliness of abnormality detection, and helps to meet the equipment usage needs of users.

[0021] In one optional implementation, detecting whether the liquid container has undergone a state change based on its current position and current orientation includes:

[0022] Obtain the initial position and initial orientation of the liquid container when it is detected that the liquid container is placed on the support structure;

[0023] Calculate the position deviation between the initial position and the current position, and the attitude deviation between the initial attitude and the current attitude, respectively;

[0024] Determine whether the position deviation is greater than a preset position threshold and whether the attitude deviation is greater than a preset attitude threshold, respectively.

[0025] If the position deviation is greater than a preset position threshold, and / or the attitude deviation is greater than a preset attitude threshold, then it is determined that the liquid container has undergone a state change.

[0026] This invention uses the initial position and attitude of the liquid container when it is correctly placed on the support structure as a benchmark, and calculates the position deviation and attitude deviation respectively. This makes the calculation results of each deviation more realistic and accurate, and the container state detection is more in line with the actual scenario. At the same time, the position deviation and attitude deviation are compared with their preset thresholds to determine the state change of the liquid container, which can reduce subjective misjudgment and greatly improve the reliability of the detection results.

[0027] In one optional implementation, the liquid discharge control method further includes:

[0028] The system counts the second time corresponding to the state change of the liquid container, and finally determines that the state change of the liquid container has occurred when the second time is greater than the second preset time threshold.

[0029] This invention also considers that in actual operation, due to human error, the position and / or attitude deviation of the liquid container may momentarily exceed a set threshold. Such momentary changes usually do not lead to liquid leakage. If they are directly judged as changes in the state of the liquid container, the misjudgment rate of the container state will be increased, causing unnecessary equipment shutdowns and warnings. Therefore, by monitoring whether the duration of the change in the state of the liquid container meets the set time threshold as the final judgment condition, momentary disturbances can be filtered out, the probability of misjudgment can be reduced, and accurate identification of changes in the state of the liquid container can be achieved.

[0030] Secondly, the present invention provides a liquid discharge control device applied to a liquid discharge equipment. The liquid discharge equipment includes a device body, a liquid discharge port, a waste liquid collection device, and a support structure disposed on the device body; wherein, the support structure is disposed below the liquid discharge port for placing a liquid container, and the waste liquid collection device is disposed below the support structure for collecting waste liquid; the device includes:

[0031] The monitoring module is used to obtain the initial weight of the waste liquid collection device and monitor the current weight of the liquid in the waste liquid collection device during the operation of the liquid discharge equipment.

[0032] The identification module is used to calculate the weight deviation between the initial weight and the current weight, and to determine whether the waste liquid collection device has undergone a weight change based on the weight deviation.

[0033] The control module is used to determine that there is an abnormality in the liquid outlet when the weight of the waste liquid collection device changes, control the liquid outlet to stop discharging liquid, and control the liquid outlet to issue an early warning.

[0034] The liquid discharge control device provided by this invention can detect abnormalities in the liquid discharge equipment by monitoring the weight changes of the waste liquid collection device in real time and determining that there is an anomaly when the weight of the waste liquid collection device changes. It can comprehensively cover abnormal scenarios that may cause liquid leakage and container contamination due to abnormal waste liquid overflow, thereby providing early warning of risks such as leakage of liquid containers and overflow of waste liquid, effectively preventing waste liquid leakage and contamination of containers, and improving the timeliness of anomaly detection. The above-mentioned use of weight monitoring of the waste liquid collection device to achieve abnormal liquid discharge control not only improves the accuracy, sensitivity and comprehensiveness of equipment anomaly identification, but also improves the liquid discharge control effect of the equipment, thereby reducing resource waste and greatly improving the user experience.

[0035] Thirdly, the present invention provides a liquid dispensing device, which includes a device body and a liquid outlet, a waste liquid collection device, and a support structure disposed on the device body; wherein, the support structure is disposed below the liquid outlet for placing a liquid container, and the waste liquid collection device is disposed below the support structure for collecting waste liquid; the liquid dispensing device also includes a weight monitoring module and a controller; wherein, the weight monitoring module is disposed below the waste liquid collection device for monitoring the current weight of the liquid in the waste liquid collection device; the controller includes a memory and a processor, which are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the liquid dispensing control method of the first aspect or any corresponding embodiment described above.

[0036] In one optional embodiment, the liquid dispensing device further includes a pose detection module, which is disposed around the liquid outlet and is used to detect the current position and current posture of the liquid container.

[0037] In one alternative implementation, the dispensing device is a coffee machine.

[0038] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to perform the liquid discharge control method of the first aspect or any corresponding embodiment described above. Attached Figure Description

[0039] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a structural block diagram of the liquid dispensing device according to an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the controller structure of the liquid dispensing device according to an embodiment of the present invention;

[0042] Figure 3 This is a structural diagram of a coffee machine;

[0043] Figure 4 This is a schematic diagram showing the installation location of the infrared monitoring device;

[0044] Figure 5 This is a schematic diagram showing the installation location of the weight monitoring device;

[0045] Figure 6 This is a schematic diagram of the waste liquid collection tank.

[0046] Figure 7 This is a schematic diagram showing the installation location of the waste liquid collection tank;

[0047] Figure 8 This is a schematic flowchart of the liquid discharge control method according to an embodiment of the present invention;

[0048] Figure 9 This is a schematic flowchart of another liquid discharge control method according to an embodiment of the present invention;

[0049] Figure 10 This is a diagram illustrating the workflow of a coffee machine;

[0050] Figure 11 This is a structural block diagram of the liquid discharge control device according to an embodiment of the present invention. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] This embodiment provides a liquid dispensing device. Figure 1 This is a structural block diagram of the liquid dispensing device according to an embodiment of the present invention, as shown below. Figure 1 As shown, the liquid dispensing device includes a device body 110, a liquid outlet 120, a waste liquid collection device 130, and a support structure 140 disposed on the device body 110; wherein, the support structure 140 is disposed below the liquid outlet 120 for placing a liquid container, and the waste liquid collection device 130 is disposed below the support structure 140 for collecting waste liquid.

[0053] In this embodiment, the specific types of liquid dispensing devices and liquid holding containers are not limited and can be adapted according to actual needs. For example, liquid dispensing devices may be water dispensers, juicers, and coffee machines; liquid holding containers may be water cups, juice cups, coffee cups (also known as coffee containers), etc. This is only an example.

[0054] In this embodiment, the specific functions and corresponding components of the liquid outlet 120, the waste liquid collection device 130, and the support structure 140 can be understood by referring to relevant content in the art. It should be noted that the liquid outlet device in this embodiment includes at least one liquid outlet 120 (also called a liquid outlet head); the waste liquid collection device 130 is also called a waste liquid collection tank, which is a pull-out device, such as a pull-out or removable waste liquid collection tank; the support structure 140 is also called a container support frame, which is an integral design with the liquid outlet device.

[0055] In this embodiment, the liquid dispensing device also includes a controller; please refer to [link to relevant documentation]. Figure 2 , Figure 2 This is a schematic diagram of the controller structure of the liquid dispensing device provided in an optional embodiment of the present invention, as shown below. Figure 2 As shown, the controller includes one or more processors 210, memory 220, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise as required. The processors can process instructions executed within the controller, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple controllers can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 2 Take a processor 210 as an example.

[0056] Processor 210 may be a central processing unit, a network processor, or a combination thereof. Processor 210 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0057] The memory 220 stores instructions executable by at least one processor 210 to cause the at least one processor 210 to perform the method shown in the above embodiments.

[0058] The memory 220 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the controller. Furthermore, the memory 220 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 220 may optionally include memory remotely located relative to the processor 210, and these remote memories may be connected to the controller via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0059] The memory 220 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 220 may also include a combination of the above types of memory.

[0060] The controller also includes an input device 230 and an output device 240. The processor 210, memory 220, input device 230, and output device 240 can be connected via a bus or other means. Figure 2 Taking the example of a connection between China and Israel via a bus.

[0061] Input device 230 can receive input digital or character information and generate signal inputs related to user settings and function control of the controller, such as a touch screen, keypad, mouse, trackpad, touchpad, joystick, one or more mouse buttons, trackball, joystick, etc. Output device 240 may include display devices, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibration motors). The aforementioned display devices include, but are not limited to, liquid crystal displays, light-emitting diodes, displays, and plasma displays. In some alternative embodiments, the display device may be a touch screen.

[0062] It should be noted that the liquid dispensing control method described below in this embodiment is integrated into the liquid dispensing device, which enables the device to identify anomalies by using multi-dimensional parameters such as the position and orientation of the container and the weight of the waste liquid collection device. This not only improves the accuracy of anomaly identification but also ensures the liquid dispensing effect of the device, greatly enhancing the user experience.

[0063] In this embodiment, the liquid dispensing device further includes a pose detection module and a weight monitoring module; wherein, the pose detection module is disposed around the liquid outlet and is used to detect the current position and current posture of the liquid container; the weight monitoring module is disposed below the waste liquid collection device and is used to monitor the current weight of the liquid in the waste liquid collection device.

[0064] It should be noted that the specific content of the pose detection module and weight monitoring module in this embodiment can be adapted to actual needs and is not limited in detail here. For example, the pose detection module is an infrared monitoring device or a camera; the weight monitoring module is a weight monitoring device, i.e., a weighing component.

[0065] In one specific embodiment, the dispensing device is a coffee machine, and the liquid container is a coffee container. Figure 3 This is a structural diagram of a coffee machine. Figure 3As can be seen, the coffee machine includes a coffee machine casing 1 (i.e., the main body of the dispensing device), a coffee dispensing head 2 (i.e., the dispensing port), an infrared monitoring device 3 (i.e., the posture detection module), a waste liquid collection tank 4 (i.e., the waste liquid collection device), a container support frame 5 (i.e., the support structure), and a weight monitoring device 6 (i.e., the weight monitoring module, also known as the weighing component). It should be noted that the relevant details of the coffee machine casing 1, coffee dispensing head 2, infrared monitoring device 3, waste liquid collection tank 4, container support frame 5, and weight monitoring device 6 in this embodiment can be found in the preceding text and will not be repeated here.

[0066] In one specific embodiment, Figure 4 This is a schematic diagram showing the installation location of the infrared monitoring device. As shown in the diagram, the infrared monitoring device 3 is installed inside the coffee machine, specifically between the two coffee dispensing heads 2, which helps prevent damage to the far-infrared probe. It should be noted that the infrared monitoring device 3 in this embodiment can be installed at any location on the coffee dispensing head 2; the specific installation location can be adjusted adaptively based on actual needs.

[0067] It should be noted that the infrared monitoring device in this embodiment uses a far-infrared thermal imaging sensor (such as a microbolometer) to monitor the state of the coffee container (such as its height and position). This sensor captures the far-infrared radiation emitted from the container's surface, converts it into an electrical signal, and generates a thermal image. When the user places the container in the designated area of ​​the coffee machine, the far-infrared sensor uses a lens to focus the object's thermal radiation, and the detector converts the radiation intensity of different temperature areas into digital signals. Then, an image processing algorithm extracts the container's outline and shape features, which are then memorized as the container's original state. During the continuous dispensing of coffee, the infrared monitoring device monitors in real time whether the original state of the coffee container changes, thereby determining whether an emergency has occurred.

[0068] In one specific embodiment, the weight monitoring device 6 is installed at the four lower corners of the waste liquid collection tank 4. Figure 5 This is a schematic diagram of the installation location of the weight monitoring device. As shown in the diagram, the weight monitoring device 6 contains four weighing components (such as weight sensors), which are respectively installed at the four corners of the waste liquid collection tank 4 to monitor the weight of the waste liquid collection tank.

[0069] It should be noted that the weight monitoring device in this embodiment uses a weight sensor (such as a strain gauge weight sensor). This sensor utilizes the strain effect of metal foil or semiconductor materials to reflect the magnitude of force through changes in resistance. Specifically, a waste liquid collection tank is placed above four weight sensors. When coffee waste liquid is collected, the elastic body undergoes slight deformation due to pressure, and strain gauges are attached to the surface of the elastic body. As the elastic body deforms, the resistance of the strain gauges also changes accordingly; for example, when the strain gauge is compressed, the resistance value decreases. In the weight monitoring circuit, the strain gauges are usually connected to a bridge circuit (such as a Wheatstone bridge). By adjusting the balance of the bridge, the resistance change is converted into a voltage signal output. The output voltage signal is converted into a digital signal after passing through a signal conditioning circuit (such as an amplifier, filter, analog-to-digital converter, etc.). When coffee flows into the waste liquid collection tank, the weight of the waste liquid collection tank changes. The weight monitoring device detects this weight change, and when the weight change exceeds a set threshold, it feeds back to the coffee machine so that the coffee machine can identify the anomaly.

[0070] In one specific embodiment, the waste liquid collection tank 4 is a pull-out device; for details, please refer to [reference needed]. Figure 6 The structural diagram of the waste liquid collection tank is shown. Furthermore, a schematic diagram showing the installation position of the waste liquid collection tank 4 on the coffee machine and its relation to the weight monitoring device 6 can be found in [reference needed]. Figure 7 I am aware of this.

[0071] According to embodiments of the present invention, based on the liquid dispensing device mentioned in the above embodiments, a corresponding embodiment of a liquid dispensing control method is also provided, applied to the liquid dispensing device. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0072] This embodiment provides a liquid discharge control method. Figure 8 This is a schematic flowchart of the liquid discharge control method according to an embodiment of the present invention, as shown below. Figure 8 As shown, the process includes the following steps:

[0073] Step S801: During the operation of the liquid discharge device, obtain the initial weight of the waste liquid collection device and monitor the current weight of the liquid in the waste liquid collection device.

[0074] It should be noted that the specific details of the liquid discharge device and the specific monitoring method of the current weight of the liquid in the waste liquid collection device in this embodiment can be found in the relevant content above, and will not be repeated here.

[0075] In addition, before the liquid dispensing device starts working, it is necessary to check whether there is a liquid container on the support structure. The liquid dispensing control process of this embodiment can only be carried out when there is a container on the support structure. If there is no container on the support structure or no container is detected (the presence of a container can be identified by a pose detection module, such as an infrared monitoring device), it indicates that the liquid dispensing device is abnormal and the liquid dispensing head needs to be controlled to stop dispensing liquid and the device should issue an early warning.

[0076] In this embodiment, the initial weight of the waste liquid collection device is not a uniform fixed standard, but can be adaptively adjusted according to actual needs (such as the no-load weight when the device is started or the weight in the initial working state). This helps to accurately adapt to waste liquid collection devices of different specifications and materials (such as waste liquid tanks of different capacities or reuse devices with residual liquid), thereby avoiding detection deviations caused by differences in the devices themselves (such as the different weights of new and old tanks), and making the judgment of weight changes more in line with the actual scenario.

[0077] Step S802: Calculate the weight deviation between the initial weight and the current weight, and determine whether the waste liquid collection device has undergone a weight change based on the weight deviation.

[0078] In this embodiment, the current weight of the liquid in the waste liquid collection device may experience sudden increases, decreases, or abnormal fluctuations. The specific nature of these weight changes can be adaptively adjusted according to the actual application scenario. For example, leakage from the container may cause an abnormal increase in the weight of the waste liquid; damage to the waste liquid collection device or detachment of the pipeline may cause an abnormal decrease in weight; misoperation of the outlet (such as not aligning it with the container) may cause liquid to flow directly into the waste liquid device, resulting in an abnormal increase in weight. As long as any of the above situations occur, the weight change can be captured and identified as abnormal, thereby achieving full-scenario risk coverage. This is only an illustrative example.

[0079] Step S803: When the weight of the waste liquid collection device changes, it is determined that there is an abnormality in the liquid outlet equipment, the liquid outlet is controlled to stop discharging liquid, and the liquid outlet equipment is controlled to issue an early warning.

[0080] In this embodiment, if the waste liquid collection device does not experience a change in weight, it is determined that the liquid discharge device is not malfunctioning.

[0081] It should be noted that the content related to early warning of the liquid dispensing device in this embodiment is not limited, such as activating audible and visual alarms to alert the user of equipment abnormalities.

[0082] In this embodiment, if there is no abnormality in the liquid dispensing device, the liquid outlet is controlled to continue working until the user's needs are met, at which point the liquid outlet is controlled to stop dispensing liquid.

[0083] The liquid discharge control method of this invention focuses on the dynamic changes in the weight of the waste liquid collection device. Specifically, by monitoring the weight changes of the waste liquid collection device in real time, an anomaly can be determined when the weight of the waste liquid collection device changes. This method can comprehensively cover abnormal scenarios that may cause liquid leakage or container contamination due to abnormal waste liquid overflow, thereby providing early warning of risks such as leakage of liquid containers and overflow of waste liquid, greatly improving the timeliness of anomaly detection. The above-mentioned use of weight monitoring of the waste liquid collection device to achieve abnormal liquid discharge control not only improves the accuracy, sensitivity, and comprehensiveness of equipment anomaly identification, but also improves the control effect of equipment liquid discharge, thereby reducing resource waste and significantly improving the user experience.

[0084] This embodiment provides a liquid discharge control method. Figure 9 This is a schematic flowchart of another liquid discharge control method according to an embodiment of the present invention, as shown below. Figure 9 As shown, the process includes the following steps:

[0085] Step S901: During the operation of the liquid discharge device, obtain the initial weight of the waste liquid collection device and monitor the current weight of the liquid in the waste liquid collection device. For details, please refer to [link to relevant documentation]. Figure 8 Step S801 of the illustrated embodiment will not be described again here.

[0086] Step S902: Calculate the weight deviation between the initial weight and the current weight, and determine whether the waste liquid collection device has undergone a weight change based on the weight deviation.

[0087] Specifically, the step S902 above, which determines whether the waste liquid collection device has undergone a weight change based on weight deviation, includes:

[0088] Step S9021: Determine whether the weight deviation is greater than the preset weight threshold.

[0089] In this embodiment, the specific value of the preset weight threshold is not limited. For example, a preset weight threshold of 5g is used only as an example.

[0090] Step S9022: If the weight deviation is greater than the preset weight threshold, it is determined that the waste liquid collection device has undergone a weight change.

[0091] In this embodiment of the invention, the weight deviation is calculated based on the initial weight of the waste liquid collection device itself. This can accurately adapt to waste liquid collection devices of different specifications and materials, avoiding detection deviations caused by differences in the devices themselves, and making the judgment of weight changes more in line with actual scenarios. At the same time, the weight deviation is compared with its preset threshold to determine the weight change of the waste liquid collection device, which can improve the objectivity and reliability of the detection, thereby improving the liquid discharge control accuracy of subsequent equipment.

[0092] In real-world scenarios, the weight of a waste liquid collection device may fluctuate momentarily due to non-abnormal factors, such as sensor measurement errors. These momentary fluctuations are usually brief and do not pose substantial risks such as liquid leakage or overflow. Directly interpreting these fluctuations as weight changes in the waste liquid collection device would increase the false positive rate and lead to unnecessary equipment shutdowns and warnings. Therefore, the liquid discharge control method in this embodiment further includes: calculating the first time corresponding to a weight change in the waste liquid collection device, and finally determining that a weight change has occurred if the first time exceeds a first preset time threshold. It should be noted that the specific value of the first preset time threshold is not limited in this embodiment; for example, a first preset time threshold of 5 seconds is merely an example. Specifically, this embodiment uses monitoring whether the duration of the weight change in the waste liquid collection device meets the set time threshold as the final determination condition. This filters out momentary fluctuations, reduces the probability of false positives, and achieves accurate identification of the corresponding weight change in the waste liquid collection device.

[0093] Step S903: When a weight change occurs in the waste liquid collection device, an abnormality is determined in the liquid outlet equipment. The liquid outlet is stopped from discharging, and the liquid outlet equipment issues an early warning. For details, please refer to [link to relevant documentation]. Figure 8 Step S803 of the illustrated embodiment will not be described again here.

[0094] In practical applications, changes in the position of the liquid container (such as being accidentally moved or knocked over, causing it to deviate from directly below the outlet) or changes in its posture (such as tilting or tipping over) are common sources of risk during the liquid dispensing process. These changes can directly lead to liquid leakage or splashing (at which point the waste liquid collection device may not have detected the weight change, or the leaked liquid may not have flowed into the waste liquid device). Therefore, this embodiment not only considers monitoring the weight of the waste liquid collection device to determine whether there is an abnormality in the liquid dispensing equipment, but also considers the dynamic changes in the position and posture of the liquid container. That is, by directly monitoring the state of the container itself, it overcomes the limitations of relying solely on waste liquid weight detection, extending anomaly identification from post-leakage detection to pre-leakage warning that abnormal container state may lead to leakage, covering more potential risks. Furthermore, when either a change in the position and posture of the liquid container or a change in the weight of the waste liquid collection device occurs, it can be determined that there is an abnormality in the liquid dispensing equipment. Therefore, during the operation of the liquid dispensing equipment, the liquid dispensing control method of this embodiment also includes:

[0095] Step b1: Detect the current position and current orientation of the liquid container.

[0096] In this embodiment, the current position is used to characterize the real-time position of the liquid container and any of its components, such as the position of the rim of the liquid container; the current posture is used to characterize the height of the liquid container, such as the height of the container when it is placed normally, or the height of the container when it is tilted or even knocked over.

[0097] It should be noted that the specific detection methods for the liquid container's current position and current posture in this embodiment can be found in the relevant content above, and will not be repeated here.

[0098] Step b2: Detect whether the liquid container has undergone a state change based on the current position and current attitude.

[0099] It should be noted that in this embodiment, the device malfunction is identified by detecting changes in the position and orientation of the liquid container, which further improves the safety monitoring logic of the liquid dispensing device. That is, by detecting the position and orientation of the liquid container in real time, problems such as container misalignment and tilting can be identified in a timely manner, avoiding liquid leakage due to container instability and greatly improving the user experience.

[0100] In this embodiment, step b2 includes:

[0101] Step b21: Obtain the initial position and initial orientation of the liquid container when it is detected that the liquid container is placed on the support structure.

[0102] It should be noted that this embodiment uses the initial position and orientation of the liquid container when it is correctly placed on the support structure as the benchmark, rather than relying on a uniform fixed standard. This allows for precise matching of different container specifications (such as size and shape) and specific placement requirements. For example, the "correct position" of a small container may differ from that of a large container. Using its own initial state as a reference avoids benchmark deviations caused by container differences. Furthermore, for containers with special shapes (such as conical flasks or irregular reagent bottles), the initial orientation (such as tilt angle) may not be absolutely horizontal. Using the stable orientation during actual placement as the benchmark is more in line with operational habits. The aforementioned "personalized benchmark" designed in this embodiment makes the detection logic more closely aligned with actual scenarios, thereby reducing misjudgments caused by the inapplicability of general standards.

[0103] Step b22: Calculate the position deviation between the initial position and the current position, and the attitude deviation between the initial attitude and the current attitude.

[0104] Step b23: Determine whether the position deviation is greater than a preset position threshold and whether the attitude deviation is greater than a preset attitude threshold.

[0105] In this embodiment, the specific values ​​of the preset position threshold and the preset attitude threshold are adaptively adjusted based on actual needs, and are not limited in detail here.

[0106] Step b24: If the position deviation is greater than a preset position threshold and / or the attitude deviation is greater than a preset attitude threshold, then it is determined that the liquid container has undergone a state change.

[0107] In this embodiment of the invention, the initial position and attitude of the liquid container when it is correctly placed on the support structure are used as the benchmark. The position deviation and attitude deviation are calculated respectively, which makes the calculation results of each deviation more realistic and accurate, and the container state detection is more in line with the actual scenario. At the same time, the position deviation and attitude deviation are compared with their preset thresholds to determine the state change of the liquid container, which can reduce subjective misjudgment and greatly improve the reliability of the detection results.

[0108] In practice, momentary changes in the position and / or attitude of a liquid container due to human error, exceeding a set threshold, typically do not lead to liquid leakage. Directly classifying these as changes in the container's state would increase the false alarm rate, causing unnecessary equipment shutdowns and warnings. Therefore, the liquid dispensing control method in this embodiment further includes: calculating a second time corresponding to the change in the liquid container's state, and finally determining that a change in the liquid container's state has occurred when the second time exceeds a second preset time threshold. It should be noted that the specific value of the second preset time threshold is not limited in this embodiment and can be adjusted adaptively according to actual needs. Specifically, this embodiment uses monitoring whether the duration of the change in the liquid container's state meets the set time threshold as the final judgment condition, which filters out momentary disturbances, reduces the probability of false alarms, and achieves accurate identification of changes in the liquid container's state.

[0109] Step b3: When the state of the liquid container changes, it is determined that there is an abnormality in the liquid outlet equipment. The steps are to control the liquid outlet to stop discharging liquid and control the liquid outlet equipment to issue an early warning.

[0110] It should be noted that in this embodiment, if the liquid container does not change state, it is determined that the liquid dispensing device is not abnormal.

[0111] This invention focuses on the dynamic changes in the state of the liquid container and the weight of the waste liquid collection device. When either the state of the liquid container or the weight of the waste liquid collection device changes, an anomaly in the liquid dispensing device can be determined. This comprehensively covers abnormal scenarios that may cause liquid leakage and container contamination, such as displacement due to accidental contact, risk of tipping, and abnormal overflow of waste liquid. This helps reduce the problem of missed detection by single-dimensional detection, greatly improving the comprehensiveness, accuracy, sensitivity, and timeliness of anomaly detection, and helps meet the equipment usage needs of users.

[0112] In one specific embodiment, the dispensing device is a coffee machine. To prevent the coffee container from overflowing and staining the container after it is full, or from continuing to dispense coffee after the coffee machine vibrates, the coffee container shifts to the side, or the user removes or knocks over the coffee container, thus causing coffee leakage and even scalding the user, this embodiment proposes to install an infrared sensor on the coffee dispensing head of the fully automatic coffee machine and a weighing component below the coffee waste collection tank. Through the sensing and monitoring of these two components, when the user encounters an unexpected situation while using the coffee machine (such as the coffee container not matching the set coffee dispensing capacity, causing coffee to overflow, or the container shifting to the side or being knocked over during the coffee dispensing process), the coffee machine will start an emergency stop to avoid scalding the user and causing a bad experience.

[0113] In summary, this embodiment proposes a control scheme combining far-infrared monitoring and waste liquid collection tank weight monitoring. In case of unexpected situations, the coffee machine will activate an emergency system and stop operating. Specifically, during operation, the infrared monitoring device and weight monitoring device can monitor the position and height of the user's coffee container and changes in the weight of the waste liquid collection tank in real time. If the coffee container shifts or tipps over, the infrared monitoring device detects the change in the position or height of the cup opening, detects the anomaly, and stops dispensing. If coffee overflows into the waste liquid collection tank, the weight monitoring device below the tank immediately detects the change in liquid weight, and the coffee machine stops dispensing to prevent excessive staining of the cup. Conversely, if the change in the position and height of the coffee container opening is minor and not detected by the infrared monitoring device, resulting in leakage, the coffee machine continues to operate, and the coffee flowing from the outlet into the waste liquid collection tank will also be detected by the weight monitoring device, triggering an emergency stop to dispensing. Figure 10 This is a diagram illustrating the workflow of a coffee machine. As shown in the diagram, the coffee machine's workflow includes:

[0114] Step 1: Preparations before the coffee machine dispenses liquid.

[0115] In this embodiment, this step aims to respond to the user's selection of coffee type by using an infrared monitoring device to identify the placed coffee container. Only after the infrared monitoring device detects the placed coffee container can the coffee machine dispensing coffee; otherwise, the coffee machine identifies an abnormal situation and stops dispensing coffee. Specifically, when the user is using the coffee machine to dispense coffee, they first place the coffee container on the container support below the coffee outlet, then select their desired coffee type on the control panel, and the coffee machine begins operation.

[0116] It should be noted that in this embodiment, when the coffee machine operates according to the user's selection, the infrared monitoring device first identifies whether there is a coffee container below the coffee dispensing head. If the infrared monitoring device does not detect a coffee container, the coffee machine considers this an abnormal behavior, stops dispensing coffee, and alerts the user in a specific way (such as by emitting a beeping sound). If the infrared monitoring device detects a coffee container, the coffee machine operates, and coffee flows out of the dispensing head.

[0117] Step II: Data monitoring during the coffee machine's operation.

[0118] In this embodiment, this step aims to use an infrared monitoring device to identify changes in the state of the coffee container and a weight monitoring device to monitor changes in the weight of the waste liquid collection tank, and to control the dispensing accordingly based on the monitoring results. Specifically, during the operation of the coffee machine, the infrared monitoring device monitors in real time whether the state of the container changes (such as changes in the height and position of the coffee container rim). If so, it indicates that the coffee container has shifted or tilted, so the coffee machine identifies the abnormal situation and controls the dispensing to stop. Otherwise, the weight monitoring device monitors in real time whether the waste liquid collection tank has changed in weight. If so, it indicates that the coffee container is full and overflowing or that the far-infrared monitoring has not detected any shift or tilt, so the coffee machine identifies the abnormal situation and controls the dispensing to stop. Otherwise, the coffee machine continues to operate until the coffee is made, at which point the dispensing stops.

[0119] It should be noted that during the operation of the coffee machine, when the infrared monitoring device detects a change in the height or position of the coffee container for more than time T1s (where 1≤T1≤3), it assumes that the container's position or height has changed due to vibration or user operation. At this time, the coffee machine recognizes the abnormal situation, activates the emergency stop state, stops working, and notifies the user in a specific way (such as by emitting a beeping sound).

[0120] It should be explained that the choice of exceeding a threshold time as the judgment condition in this embodiment is because this embodiment involves an emergency stop for dispensing liquid and a notification to the user in abnormal situations. If the situation occurs, the user will handle it automatically if they notice it in time, thus eliminating the need for the coffee machine's automatic recognition and control; furthermore, this time also provides the user with a reaction time. Specifically, the user places the container on the container support and then selects coffee on the control panel, and the coffee machine starts working. When the coffee machine starts working, the infrared monitoring device identifies the rim of the coffee container and records an initial position and height. If the position changes, i.e., the coffee machine detects the coffee container being moved within the judgment time, it is judged as an unexpected situation. If the container height changes (e.g., the container tilts from upright, and the rim changes from facing upwards to facing any other direction) and the coffee machine detects the change time exceeding the threshold, it is judged as a device malfunction.

[0121] It should be noted that during the operation of the coffee machine, when the weight monitoring device below the waste liquid collection tank detects a change in the weight of the waste liquid collection tank exceeding m1g (where 3≤m1≤5), it is considered that the coffee container is full and overflowing, or that the position and height of the container displacement are small and not detected by the infrared monitoring device. At this time, the coffee machine recognizes the abnormal situation, activates the emergency stop state, stops working, and notifies the user in a specific way (such as emitting a beeping sound).

[0122] It should be explained that in this embodiment, the user places the container on top of the container support, and then clicks to select coffee on the operation panel, and the coffee machine starts working; note that at the moment the coffee machine starts working, the weight monitoring device will record an initial weight, which is the initial weight.

[0123] It should be noted that during the normal coffee making process, coffee liquid may splash into the waste liquid collection tank. To prevent the weighing component below the waste liquid collection tank from making a weight monitoring error due to accidental coffee splashing, its weight monitoring response can be set to a weight monitoring range.

[0124] In summary, the liquid discharge control method of this invention utilizes multi-dimensional parameters such as the position and orientation of the container and the weight of the waste liquid collection device for anomaly identification, which not only improves the identification accuracy but also enhances the liquid discharge effect and improves the user experience.

[0125] This embodiment also provides a liquid dispensing control device for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, a "module" can be a combination of software and / or hardware that performs a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0126] This invention provides a liquid dispensing control device applied to a liquid dispensing equipment. The liquid dispensing equipment includes a main body, a liquid outlet, a waste liquid collection device, and a support structure disposed on the main body. The support structure is located below the liquid outlet for holding a liquid container, and the waste liquid collection device is located below the support structure for collecting waste liquid. Figure 11 As shown, the device includes:

[0127] The monitoring module 1101 is used to obtain the initial weight of the waste liquid collection device and monitor the current weight of the liquid in the waste liquid collection device during the operation of the liquid discharge device.

[0128] The identification module 1102 is used to calculate the weight deviation between the initial weight and the current weight, and to determine whether the waste liquid collection device has undergone a weight change based on the weight deviation.

[0129] The control module 1103 is used to determine that there is an abnormality in the liquid outlet when the weight of the waste liquid collection device changes, control the liquid outlet to stop discharging liquid, and control the liquid outlet to issue an early warning.

[0130] In some optional embodiments, the identification module 1102 includes: a first identification submodule and a second identification submodule; wherein, the first identification submodule is used to determine whether the weight deviation is greater than a preset weight threshold; and the second identification submodule is used to determine that the waste liquid collection device has undergone a weight change if the weight deviation is greater than the preset weight threshold.

[0131] In some optional implementations, the identification module 1102 further includes a weight monitoring submodule, which is used to count the first time corresponding to the weight change of the waste liquid collection device, and finally determine that the weight change of the waste liquid collection device has occurred when the first time is greater than a first preset time threshold.

[0132] In some optional embodiments, the device further includes: a detection module for detecting the current position and current orientation of the liquid container; detecting whether the liquid container has undergone a state change based on the current position and current orientation; and determining that there is an abnormality in the liquid dispensing device when the liquid container undergoes a state change, executing the steps of controlling the liquid outlet to stop dispensing liquid, and controlling the liquid dispensing device to issue an early warning.

[0133] In some optional implementations, the detection module includes: a first detection submodule, a second detection submodule, a third detection submodule, and a fourth detection submodule; wherein, the first detection submodule is used to acquire the initial position and initial attitude of the liquid container when it is detected that the liquid container is placed on the support structure; the second detection submodule is used to calculate the position deviation between the initial position and the current position, and the attitude deviation between the initial attitude and the current attitude, respectively; the third detection submodule is used to determine whether the position deviation is greater than a preset position threshold and whether the attitude deviation is greater than a preset attitude threshold, respectively; the fourth detection submodule is used to determine that the liquid container has undergone a state change if the position deviation is greater than the preset position threshold and / or the attitude deviation is greater than the preset attitude threshold.

[0134] In some optional implementations, the monitoring module further includes a pose detection submodule, which is used to count the second time corresponding to the state change of the liquid container, and finally determine that the state change of the liquid container has occurred when the second time is greater than a second preset time threshold.

[0135] Further functional descriptions of the above modules are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0136] In this embodiment, the liquid dispensing control device is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0137] The liquid discharge control device of this invention utilizes the weight monitoring of the waste liquid collection device to achieve abnormal control. It can accurately identify weight changes caused by abnormalities such as leakage or overflow of the liquid container, which not only improves the accuracy of identification but also improves the liquid discharge effect, thereby reducing resource waste and enhancing the user experience.

[0138] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor main control chips, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the methods shown in the above embodiments are implemented.

[0139] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A liquid discharge control method, applied to a liquid discharge device, the liquid discharge device comprising a device body and a liquid outlet, a waste liquid collection device, and a support structure disposed on the device body; wherein, The supporting structure is located below the liquid outlet and is used to place the liquid container; the waste liquid collection device is located below the supporting structure and is used to collect waste liquid; the method includes: During the operation of the liquid discharge device, the initial weight of the waste liquid collection device is obtained, the current weight of the liquid in the waste liquid collection device is monitored, and the current position and current attitude of the liquid container are detected. Calculate the weight deviation between the initial weight and the current weight, determine whether the waste liquid collection device has undergone a weight change based on the weight deviation, and detect whether the liquid container has undergone a state change based on the current position and the current posture; When the waste liquid collection device experiences a weight change, the first time corresponding to the weight change is recorded, and if the first time is greater than a first preset time threshold, the weight change of the waste liquid collection device is finally determined; and / or, when the liquid container experiences a state change, the second time corresponding to the state change of the liquid container is recorded, and if the second time is greater than a second preset time threshold, the state change of the liquid container is finally determined; the liquid outlet is controlled to stop discharging liquid, and the liquid discharging device is controlled to issue an early warning.

2. The liquid discharge control method according to claim 1, characterized in that, The step of determining whether the waste liquid collection device has undergone a weight change based on the weight deviation includes: Determine whether the weight deviation is greater than a preset weight threshold; If the weight deviation is greater than the preset weight threshold, it is determined that the waste liquid collection device has undergone a weight change.

3. The liquid discharge control method according to claim 1, characterized in that, The step of detecting whether the liquid container has undergone a state change based on the current position and the current attitude includes: Obtain the initial position and initial orientation of the liquid container when it is detected that the liquid container is placed on the support structure; Calculate the position deviation between the initial position and the current position, and the attitude deviation between the initial attitude and the current attitude, respectively; Determine whether the position deviation is greater than a preset position threshold and whether the attitude deviation is greater than a preset attitude threshold, respectively. If the position deviation is greater than the preset position threshold, and / or the attitude deviation is greater than the preset attitude threshold, then it is determined that the liquid container has undergone a state change.

4. A liquid discharge control device, applied to a liquid discharge equipment, the liquid discharge equipment comprising a device body and a liquid discharge port, a waste liquid collection device, and a support structure disposed on the device body; wherein, The supporting structure is located below the liquid outlet and is used to place the liquid container; the waste liquid collection device is located below the supporting structure and is used to collect waste liquid; characterized in that the device includes: The monitoring module is used to acquire the initial weight of the waste liquid collection device and monitor the current weight of the liquid in the waste liquid collection device during the operation of the liquid discharge device, as well as detect the current position and current attitude of the liquid container. The identification module is used to calculate the weight deviation between the initial weight and the current weight, determine whether the waste liquid collection device has undergone a weight change based on the weight deviation, and detect whether the liquid container has undergone a state change based on the current position and the current posture. The control module is configured to: when the waste liquid collection device experiences a weight change, calculate the first time corresponding to the weight change of the waste liquid collection device, and if the first time is greater than a first preset time threshold, finally determine that the waste liquid collection device has experienced a weight change; and / or, when the liquid container experiences a state change, calculate the second time corresponding to the state change of the liquid container, and if the second time is greater than a second preset time threshold, finally determine that the liquid container has experienced a state change; control the liquid outlet to stop discharging liquid, and control the liquid discharging device to issue an early warning.

5. A liquid dispensing device, characterized in that, The liquid dispensing device includes a device body, a liquid outlet, a waste liquid collection device, and a support structure disposed on the device body; wherein, the support structure is disposed below the liquid outlet for placing a liquid container, and the waste liquid collection device is disposed below the support structure for collecting waste liquid; the liquid dispensing device further includes a weight monitoring module and a controller; wherein, the weight monitoring module is disposed below the waste liquid collection device for monitoring the current weight of the liquid in the waste liquid collection device; the controller includes a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the liquid dispensing control method according to any one of claims 1 to 3.

6. The liquid dispensing device according to claim 5, characterized in that, The liquid dispensing device also includes a pose detection module, which is disposed around the liquid outlet and is used to detect the current position and current posture of the liquid container.

7. The liquid dispensing device according to claim 5, characterized in that, The dispensing device is a coffee machine.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the liquid discharge control method according to any one of claims 1 to 3.

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