Coffee machine control method and apparatus, coffee machine, electronic device, and storage medium

Abstract

The application relates to a coffee machine control method and device, a coffee machine, an electronic device, a storage medium and a computer program product. After the coffee machine enters an extraction stage, the motor of the coffee machine is controlled to operate based on initial powder pressing intensity data, the extraction pressure of the coffee machine is acquired in real time, in the case that the extraction pressure is not in a preset extraction pressure range, the initial powder pressing intensity data is adjusted based on the extraction pressure, updated powder pressing intensity data is obtained and the motor is controlled to operate based on the updated powder pressing intensity data until the extraction stage ends. Through real-time adjustment control of the powder pressing intensity data, the extraction pressure can be stabilized in the preset extraction pressure range during the extraction process, and the taste of the extracted coffee is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliance control, in particular to a coffee machine control method and device, a coffee machine, an electronic device, a storage medium and a computer program product. BACKGROUND

[0002] With the gradual improvement of living standards, people's requirements for the quality of life are also getting higher and higher, and coffee, as a quality drink, is widely loved by consumers for its unique flavor and refreshing characteristics. In order to obtain coffee with better flavor and to make it more convenient, people have developed a series of devices that can automatically extract coffee. Among them, the full-automatic coffee machine has the widest audience because it can complete the process from coffee bean grinding to coffee liquid extraction with one key.

[0003] In the traditional technology, the full-automatic coffee machine mainly extracts coffee liquid from coffee powder cake by high-temperature and high-pressure water. However, in the current extraction process of the full-automatic coffee machine, the power of the water pump is fixed and unchangeable. As the extraction process proceeds, the dissolution of soluble substances increases the water passage in the coffee powder cake and reduces the resistance, which leads to a gradual decrease in the extraction pressure of the coffee powder cake, affecting the extraction taste of the coffee. SUMMARY

[0004] Therefore, it is necessary to provide a coffee machine control method, device, coffee machine, electronic device, storage medium and computer program product to solve the technical problem that the extraction pressure of the coffee machine gradually decreases as the extraction process proceeds.

[0005] In a first aspect, the present application provides a coffee machine control method, which comprises:

[0006] After the coffee machine enters the extraction stage, the motor of the coffee machine is controlled to operate with initial powder pressing intensity data;

[0007] The extraction pressure of the coffee machine is obtained in real time;

[0008] If the extraction pressure is not in a preset extraction pressure range, the initial powder pressing intensity data is adjusted according to the extraction pressure, updated powder pressing intensity data is obtained, and the motor is controlled to operate based on the updated powder pressing intensity data until the end of the extraction stage.

[0009] In one embodiment, if the extraction pressure is not in the preset extraction pressure range, the initial powder pressing intensity data is adjusted according to the extraction pressure, and the updated powder pressing intensity data is obtained, which comprises:

[0010] In a case where the extraction pressure is less than the lower limit value of the preset extraction pressure range, the initial powder pressing intensity data is increased according to the first pressure difference value between the extraction pressure and the lower limit value of the preset extraction pressure range, to obtain updated powder pressing intensity data.

[0011] In one of the embodiments, the increasing of the initial powder pressing intensity data according to the first pressure difference value between the extraction pressure and the lower limit value of the preset extraction pressure range includes:

[0012] The first pressure difference value between the extraction pressure and the lower limit value of the preset extraction pressure range, and a variation of the powder pressing intensity data corresponding to a unit pressure difference value, are used to obtain a powder pressing intensity data adjustment amount.

[0013] The sum of the initial powder pressing intensity data and the powder pressing intensity data adjustment amount is taken as the updated powder pressing intensity data.

[0014] In one of the embodiments, the adjusting of the initial powder pressing intensity data according to the extraction pressure in a case where the extraction pressure is not within the preset extraction pressure range includes:

[0015] In a case where the extraction pressure is greater than the upper limit value of the preset extraction pressure range, the initial powder pressing intensity data is decreased according to the second pressure difference value between the extraction pressure and the upper limit value of the preset extraction pressure range, to obtain updated powder pressing intensity data.

[0016] In one of the embodiments, the decreasing of the initial powder pressing intensity data according to the second pressure difference value between the extraction pressure and the upper limit value of the preset extraction pressure range includes:

[0017] The second pressure difference value between the extraction pressure and the upper limit value of the preset extraction pressure range, and a variation of the powder pressing intensity data corresponding to a unit pressure difference value, are used to obtain a powder pressing intensity data adjustment amount.

[0018] The difference between the initial powder pressing intensity data and the powder pressing intensity data adjustment amount is taken as the updated powder pressing intensity data.

[0019] In one of the embodiments, the powder pressing intensity data includes at least one of motor electrical parameter data, motor speed data, motor torque sensor data, and transmission mechanism displacement data.

[0020] In one of the embodiments, the extraction stage includes an initial stage.

[0021] The controlling of the motor of the coffee machine with the initial powder pressing intensity data includes: controlling the motor of the coffee machine with the initial powder pressing intensity data for a preset time length corresponding to the initial stage.

[0022] In one of the embodiments, the extraction stage comprises at least one extraction sub-stage, each of the extraction sub-stages corresponding to different initial powder pressing intensity data and different preset extraction pressure ranges.

[0023] In a second aspect, the present application further provides a coffee machine control device, which comprises:

[0024] a running control module, configured to control running of a motor of the coffee machine according to initial powder pressing intensity data after the coffee machine enters an extraction stage;

[0025] a pressure acquisition module, configured to acquire extraction pressure of the coffee machine in real time;

[0026] an intensity adjustment module, configured to adjust the initial powder pressing intensity data according to the extraction pressure when the extraction pressure is not in a preset extraction pressure range, to obtain updated powder pressing intensity data, and to call the running control module to control running of the motor based on the updated powder pressing intensity data until the extraction stage ends.

[0027] In a third aspect, the present application further provides a coffee machine, which comprises a motor, a transmission mechanism, an extraction head, a powder cake accommodating cavity, and a controller, the motor is connected to the extraction head through the transmission mechanism, the extraction head is at least partially movably arranged in the powder cake accommodating cavity, and is reciprocally moved in the powder cake accommodating cavity to press a coffee powder cake arranged in the powder cake accommodating cavity under the driving of the transmission mechanism, the extraction head further comprises a high-pressure water channel penetrating into the powder cake accommodating cavity, and the controller is connected to the motor, and is configured to control extraction pressure of the coffee machine according to the coffee machine control method to realize extraction of the coffee powder cake.

[0028] In a fourth aspect, the present application further provides an electronic device. The electronic device comprises a memory and a processor, the memory stores a computer program, and the processor realizes steps of the method when executing the computer program.

[0029] In a fifth aspect, the present application further provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program realizes steps of the method when executed by a processor.

[0030] In a sixth aspect, the present application further provides a computer program product. The computer program product comprises a computer program, and the computer program realizes steps of the method when executed by a processor.

[0031] The coffee machine control method, device, coffee machine, electronic device, storage medium and computer program product can control the motor of the coffee machine to run with initial powder pressing intensity data after the coffee machine enters the extraction stage, acquire the extraction pressure of the coffee machine in real time, adjust the initial powder pressing intensity data according to the extraction pressure in the case that the extraction pressure is not in the preset extraction pressure range, obtain updated powder pressing intensity data and control the motor to run based on the updated powder pressing intensity data until the extraction stage ends. The extraction pressure can be stabilized in the preset extraction pressure range in the extraction process through real-time adjustment and control of the powder pressing intensity data, and the taste of the coffee obtained through extraction is better. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 An application environment diagram of the coffee machine control method in an embodiment;

[0033] Figure 2 A flowchart of the coffee machine control method in an embodiment;

[0034] Figure 3 A partial structure diagram of the coffee machine extraction device in an embodiment;

[0035] Figure 4 A flowchart of the step of obtaining updated powder pressing intensity data in an embodiment;

[0036] Figure 5 A flowchart of the step of obtaining updated powder pressing intensity data in another embodiment;

[0037] Figure 6 A flowchart of the step of obtaining updated powder pressing intensity data in still another embodiment;

[0038] Figure 7 A flowchart of the coffee machine control method in another embodiment;

[0039] Figure 8 A structure block diagram of the coffee machine control device in an embodiment;

[0040] Figure 9 An internal structure diagram of the electronic device in an embodiment;

[0041] Figure 10 An internal structure diagram of the electronic device in another embodiment. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, further detailed description will be given to the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0043] In one embodiment, the coffee machine control method provided by the present application can be applied to the application environment as shown in Figure 1 The application environment involves a coffee machine 102 and a controller 104, and the controller 104 is located outside the coffee machine 102. In some embodiments, the coffee machine 102 can also include the controller 104. The coffee machine 102 can communicate with the controller 104 through a network or other means. The data storage system can store the data required by the controller 104 for processing. The data storage system can be integrated on the controller 104, or placed on the cloud or other network servers.

[0044] The coffee machine 102 includes a motor, a transmission mechanism, an extraction head, and a powder cake containing cavity. The motor is connected to the extraction head through the transmission mechanism. The extraction head is at least partially movably arranged in the powder cake containing cavity and reciprocally moves in the powder cake containing cavity under the driving of the transmission mechanism to press the coffee powder cake arranged in the powder cake containing cavity. The extraction head further includes a high-pressure water channel penetrating into the powder cake containing cavity. The controller 104 is connected to the motor for controlling the extraction pressure of the coffee machine 102 to realize the extraction of the coffee powder cake. Specifically, after the coffee machine 102 enters the extraction stage, the controller 104 controls the motor to operate with initial powder pressing force data, and real-time acquires the extraction pressure of the coffee machine. In the case that the extraction pressure is not in the preset extraction pressure range, the initial powder pressing force data is adjusted according to the extraction pressure, the updated powder pressing force data is obtained, and the motor is controlled to operate based on the updated powder pressing force data until the end of the extraction stage.

[0045] Among them, the coffee machine 102 can be various types of household or commercial full-automatic coffee machines. The controller 104 can be an electronic device, for example, a control chip, a control circuit board, a terminal or a server. The terminal can be, but is not limited to, various personal computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things device can be a smart speaker, a smart car device, etc. The portable wearable device can be a smart watch, a smart bracelet, etc. The server can be realized by an independent server or a server cluster composed of multiple servers.

[0046] In one embodiment, as shown in Figure 2 A coffee machine control method is provided. The method is applied to the controller 104 in Figure 1 , and the controller 104 is located inside the coffee machine 102 as an example for illustration, including the following S200 to S600, wherein:

[0047] S200: After the coffee machine enters the extraction stage, control the motor of the coffee machine to operate with initial powder pressing force data.

[0048] The coffee machine described in the embodiments of the present application can be a full-automatic coffee machine, which realizes the process of grinding coffee beans to extract coffee liquid by one key. Correspondingly, the process of making coffee by the coffee machine can include a grinding stage, a powder pressing stage and an extraction stage. Please refer to Figure 3 The grinding stage can realize grinding coffee beans into coffee powder and placing the coffee powder in a powder cake accommodating cavity. The powder pressing stage can realize pressing the loose coffee powder into a coffee powder cake by pressing the extraction head. The extraction stage can realize injecting high-temperature and high-pressure water into the coffee powder cake through the high-pressure water channel penetrating the extraction head to extract the soluble substances in the coffee powder cake to obtain coffee. Of course, the coffee machine described in the embodiments of the present application can also be a semi-automatic coffee machine, and the user manually completes the grinding stage and the powder pressing stage, and then completes the extraction stage by the coffee machine and the coffee machine control method provided in the present application.

[0049] Specifically, the way of judging that the coffee machine enters the extraction stage can be obtained according to the operation instruction of the user, or can be obtained based on the powder pressing stage completion signal. The operation instruction of the user can be an extraction operation instruction issued by the user through the coffee machine body or a remote terminal, which indicates that the coffee machine needs to be controlled to enter the extraction stage. The powder pressing stage completion signal can be obtained based on the displacement data of the extraction head or the transmission mechanism in the full-automatic coffee machine, which represents that the pressing of the coffee powder cake has been completed.

[0050] It can be understood that the extraction pressure refers to the pressure degree of the coffee powder cake in the powder cake accommodating cavity during the extraction process, which can be collected by the water pressure sensor arranged at the high-pressure water channel. During the extraction of the coffee powder cake, the extraction pressure has a direct impact on the taste of the extracted coffee. When the extraction pressure is large, the taste of the extracted coffee is strong, and when the extraction pressure is small, the taste of the extracted coffee is weak. Therefore, in the extraction stage, the extraction pressure needs to be stabilized at the set optimal extraction pressure as much as possible to ensure that the taste of the extracted coffee is good.

[0051] However, with the progress of the extraction stage, the extraction of the soluble substances in the coffee powder cake increases the water passage inside the coffee powder cake and reduces the resistance, which in turn gradually reduces the extraction pressure of the coffee powder cake in the powder cake accommodating cavity, affecting the extraction degree of the coffee. Therefore, in an embodiment, the extraction stage described in the present application includes an initial stage and an adjustment stage. The initial stage represents a stage in which the extraction pressure has not changed significantly, and no change is made. The adjustment stage represents a stage in which the extraction pressure has gradually decreased, and corresponding measures need to be taken to adjust to ensure that the extraction pressure is stable. The extraction pressure can generally be affected by the degree of pressing of the extraction head and the injection flow rate and other parameters. However, adjusting the injection flow rate and other parameters may lead to changes in the concentration and total amount of the extracted coffee liquid, and the embodiments of the present application consider adjusting the degree of pressing of the extraction head to ensure that the extraction pressure is stable.

[0052] Please continue to refer to Figure 3 For example, the process of controlling the operation of the coffee machine in the powder pressing stage and the extraction stage is explained by taking the fully automatic coffee machine as an example. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0053] The motor is connected to the controller and connected to the extraction head through a transmission mechanism, and the extraction head is at least partially movably arranged in the powder cake accommodating cavity. After the coffee powder is placed in the powder cake accommodating cavity and enters the powder pressing stage, the controller can control the motor to run, drive the extraction head to reciprocatingly press down in the powder cake accommodating cavity through the transmission mechanism, until a powder pressing stage completion signal is obtained based on the displacement data of the extraction head or the transmission mechanism, and the loose coffee powder in the powder cake accommodating cavity is pressed into a coffee powder cake.

[0054] It can be understood that at the end of the powder pressing stage, the extraction head needs to have a certain pressure on the coffee powder cake to ensure the integrity of the coffee powder cake when high-temperature and high-pressure water is injected in the extraction stage. Correspondingly, the initial powder pressing intensity data represents the pressure value of the extraction head on the coffee powder cake at this time, and at the same time can also make the extraction pressure meet the set optimal extraction pressure. If the coffee machine is a semi-automatic coffee machine, after the user engages the brewing head containing the powder cake accommodating cavity to the extraction head, the motor of the coffee machine also needs to be controlled with the initial powder pressing intensity data to make the extraction head have a certain pressure on the coffee powder cake, and at the same time also needs to make the extraction pressure meet the set optimal extraction pressure.

[0055] In one embodiment, the control of the motor of the coffee machine with the initial powder pressing intensity data in S200 includes: controlling the motor of the coffee machine with the initial powder pressing intensity data for a preset time length corresponding to an initial stage. The preset time length corresponding to the initial stage represents the time length during which the extraction pressure deviates from the set optimal extraction pressure by a preset difference value, and the preset difference value can be 0-1 bar, i.e. the time length during which the extraction pressure does not change significantly after the extraction starts. The specific value can be set according to actual technical needs, for example, in the present embodiment, the preset time length corresponding to the initial stage can be selected based on actual experimental data in 2s-4s, and specifically can be set to 3s.

[0056] Further, the powder pressing intensity data can be any data that can represent the degree of downward pressure of the extraction head in the above control process, for example, it can be motor electrical parameter data, it can also be motor speed data, it can also be motor torque data, and it can also be displacement data of the transmission mechanism or the extraction head. In the specific control process, any one or more of the above data can be selected to control the motor.

[0057] It can be understood that when the above parameter data is used as the powder pressing intensity data to control the motor, the controller needs to convert the actually collected parameter data into a control signal through a pre-designed calculation formula or a pre-set corresponding relationship, and then control the motor based on the control signal.

[0058] In an embodiment, the powder pressing intensity data can be motor electrical parameter data. The motor electrical parameter data can include parameters such as operating current or operating voltage of the motor. The motor electrical parameter data can be collected by an electrical parameter sensor arranged on the motor and then transmitted to the controller. Alternatively, the motor itself can have an electrical parameter monitoring function, and the monitored electrical parameter data can be fed back to the controller.

[0059] In an embodiment, the powder pressing intensity data can be motor speed data. The motor speed data can be collected by a speed sensor arranged on the rotating shaft of the motor and then transmitted to the controller. Alternatively, the motor itself can have a speed monitoring function, and the monitored speed data can be fed back to the controller.

[0060] In an embodiment, the powder pressing intensity data can be motor torque sensor data. The motor torque sensor data can be collected by a torque sensor arranged on the electromagnet or the electric bit head of the motor and then transmitted to the controller. Alternatively, the motor itself can have a torque monitoring function, and the monitored torque sensor data can be fed back to the controller.

[0061] In an embodiment, the powder pressing intensity data can be transmission mechanism displacement data. The transmission mechanism displacement data can be collected by a displacement sensor or a laser ranging sensor arranged at the connection between the transmission mechanism and the extraction head and then transmitted to the controller.

[0062] S400: Real-time acquisition of the extraction pressure of the coffee machine.

[0063] After the initial stage of extraction ends, the extraction pressure of the coffee machine needs to be acquired in real time for the adjustment stage to adjust the initial powder pressing intensity data to obtain updated powder pressing intensity data.

[0064] Specifically, the extraction pressure refers to the pressure degree of the coffee powder cake in the powder cake containing cavity during the extraction process, which can be collected by a water pressure sensor arranged at the high-pressure water channel and then transmitted to the controller. During the entire adjustment stage, the extraction pressure of the coffee machine is acquired in real time, i.e., the water pressure sensor collects the extraction pressure at a preset time interval and then feeds it back to the controller in real time. The specific value of the preset time interval can be set according to actual technical needs, for example, it can be 0.5s-1s.

[0065] S600: In the case where the extraction pressure is not in the preset extraction pressure range, the initial powder pressing intensity data is adjusted according to the extraction pressure, the updated powder pressing intensity data is obtained, and the motor is controlled to operate based on the updated powder pressing intensity data until the extraction stage ends.

[0066] The preset extraction pressure range can be set based on the set optimal extraction pressure, and can be understood as allowing the extraction pressure to fluctuate slightly above the set optimal extraction pressure. For example, when the set optimal extraction pressure is 9 bar, the preset extraction pressure range can be set as [9 bar, 10 bar].

[0067] Specifically, when the controller obtains the extraction pressure of the coffee machine collected in real time once, it needs to determine whether the extraction pressure is in the preset extraction pressure range. In the case where the extraction pressure is in the preset extraction pressure range, it indicates that the extraction pressure has not changed significantly, and the current powder pressing intensity data can be kept unchanged to control the motor to run. In the case where the extraction pressure is not in the preset extraction pressure range, it indicates that the extraction pressure has changed significantly, and the powder pressing intensity data needs to be adjusted according to the extraction pressure to obtain updated powder pressing intensity data to control the motor to run.

[0068] It can be understood that the controller can cycle the above determination and control process based on the real-time acquisition of the extraction pressure of the coffee machine until the end of the extraction stage.

[0069] When the controller obtains the extraction pressure of the coffee machine collected in real time for the first time, and determines that the extraction pressure is not in the preset extraction pressure range, the initial powder pressing intensity data needs to be adjusted according to the extraction pressure to obtain first updated powder pressing intensity data, and the motor is controlled to run based on the first updated powder pressing intensity data. The controller also needs to continue to obtain the extraction pressure of the coffee machine collected in real time for judgment, and when it is determined again that the extraction pressure is not in the preset extraction pressure range, the first updated powder pressing intensity data needs to be adjusted according to the extraction pressure to obtain second updated powder pressing intensity data, and the motor is controlled to run based on the second updated powder pressing intensity data. In this way, the controller continues to obtain the extraction pressure of the coffee machine collected in real time for judgment, and updates the powder pressing intensity data when the extraction pressure is not in the preset extraction pressure range to control the motor to run until the end of the extraction stage.

[0070] The end of the extraction stage can be represented by the running time of the extraction stage reaching a preset extraction time. The specific value of the preset extraction time can be set according to actual technical needs, for example, in this embodiment, it can be selected from 5s to 10s based on actual experimental data, and specifically can be set to 10s.

[0071] Further, the way of adjusting the pressure compacting intensity data according to the extraction pressure can be that, first, based on the size relationship between the extraction pressure and the preset extraction pressure range, a target adjustment direction of the pressure compacting intensity data is obtained, and then the pressure compacting intensity data is controlled to be adjusted step by step in the target adjustment direction until the extraction pressure meets the preset extraction pressure range. Or, based on the difference between the extraction pressure and the preset extraction pressure range, a target adjustment amplitude of the pressure compacting intensity data is directly obtained, and then the pressure compacting intensity data is controlled to be adjusted by the target adjustment amplitude so that the extraction pressure meets the preset extraction pressure range.

[0072] The coffee machine control method described above, after the coffee machine enters the extraction stage, controls the motor of the coffee machine to run with the initial pressure compacting intensity data, acquires the extraction pressure of the coffee machine in real time, and in the case that the extraction pressure is not in the preset extraction pressure range, adjusts the initial pressure compacting intensity data according to the extraction pressure, obtains updated pressure compacting intensity data and controls the motor to run based on the updated pressure compacting intensity data, until the extraction stage ends. Through real-time adjustment control of the pressure compacting intensity data, it can be ensured that the extraction pressure is stable in the preset extraction pressure range during the extraction process, and then the taste of the coffee obtained by extraction is ensured to be good.

[0073] In order to extract coffee with different flavors and meet the needs of different users, the extraction stage of the present application can also be controlled in segments with different extraction pressures. In one embodiment, the extraction stage includes at least one extraction sub-stage, and the initial pressure compacting intensity data corresponding to each extraction sub-stage is different from the preset extraction pressure range.

[0074] Specifically, the number of extraction sub-stages can be set according to actual technical needs, and the initial pressure compacting intensity data corresponding to each extraction sub-stage is different from the preset extraction pressure range to achieve segmented pressure adjustment. In specific applications, each extraction sub-stage can correspond to the extraction of one cup of coffee, or multiple cups of coffee can be extracted at one time, that is, one extraction sub-stage or several extraction sub-stages correspond to the extraction of one cup of coffee.

[0075] Further, each extraction sub-stage can also include an initial stage and an adjustment stage. In the initial stage, the motor is controlled to run with the initial pressure compacting intensity data corresponding thereto, and in the adjustment stage, the pressure compacting intensity data is adjusted in cycles based on the preset extraction pressure range corresponding thereto to ensure stable extraction pressure.

[0076] In one embodiment, the extraction stage can include two extraction sub-stages, the first extraction sub-stage is the first 5s, and the second extraction sub-stage can be the last 5s. In this case, the first extraction sub-stage corresponds to the set optimal extraction pressure of 9bar, and the preset extraction pressure range can be set as [9bar, 10bar]. The second extraction sub-stage corresponds to the set optimal extraction pressure of 12bar, and the preset extraction pressure range can be set as [12bar, 13bar]. It can be understood that in the case that soluble substances have been precipitated more in the later extraction stage, the extraction pressure is increased to extract coffee with a more aromatic and thick taste.

[0077] In one embodiment, as shown in FIG. 6, in the case that the extraction pressure is not in the preset extraction pressure range in S600, the initial powdering intensity data is adjusted according to the extraction pressure to obtain updated powdering intensity data, including S620: in the case that the extraction pressure is less than the lower limit value of the preset extraction pressure range, the initial powdering intensity data is increased according to the extraction pressure and the lower limit value of the preset extraction pressure range to obtain the updated powdering intensity data. Figure 4

[0078] Specifically, in the case that the extraction pressure is less than the lower limit value of the preset extraction pressure range, the initial powdering intensity data needs to be increased to increase the extraction pressure, so that the extraction pressure is in the preset extraction pressure range, and the stability of the extraction pressure is ensured.

[0079] In one embodiment, as shown in FIG. 6, in the case that the extraction pressure is not in the preset extraction pressure range in S600, the initial powdering intensity data is adjusted according to the extraction pressure to obtain updated powdering intensity data, including S620: in the case that the extraction pressure is less than the lower limit value of the preset extraction pressure range, the initial powdering intensity data is increased according to the extraction pressure and the lower limit value of the preset extraction pressure range to obtain the updated powdering intensity data. Figure 5

[0080] S622: obtaining a powdering intensity data adjustment amount according to a first pressure difference value between the extraction pressure and the lower limit value of the preset extraction pressure range, and a powdering intensity data change amount corresponding to a unit pressure difference value.

[0081] S624: taking the sum of the initial powdering intensity data and the powdering intensity data adjustment amount as the updated powdering intensity data.

[0082] Specifically, the powdering intensity data adjustment amount is a target adjustment amplitude of the powdering intensity data, and the powdering intensity data change amount corresponding to the unit pressure difference value represents the amplitude of the powdering intensity data corresponding to the adjustment of the unit extraction pressure. The product of the first pressure difference value between the extraction pressure and the lower limit value of the preset extraction pressure range and the powdering intensity data change amount corresponding to the unit pressure difference value can be used to obtain the powdering intensity data adjustment amount.

[0083] Further, the initial powdering intensity data is added to the powdering intensity data adjustment amount to obtain the updated powdering intensity data. ​​

[0084] In one embodiment, as shown in Figure 4 In one embodiment, as shown in

[0085] Specifically, in the case that the extraction pressure is greater than the upper limit value of the preset extraction pressure range, the initial powder pressing intensity data needs to be reduced to reduce the extraction pressure, so that the extraction pressure is within the preset extraction pressure range, and the stability of the extraction pressure is ensured.

[0086] In one embodiment, as shown in Figure 6

[0087] S642: obtaining a powder pressing intensity data adjustment amount according to a second pressure difference value between the extraction pressure and the upper limit value of the preset extraction pressure range, and a powder pressing intensity data change amount corresponding to a unit pressure difference value. Specifically, the powder pressing intensity data adjustment amount can be obtained based on the product of the first pressure difference value between the extraction pressure and the lower limit value of the preset extraction pressure range, and the powder pressing intensity data change amount corresponding to the unit pressure difference value.

[0088] S644: taking the difference between the initial powder pressing intensity data and the powder pressing intensity data adjustment amount as the updated powder pressing intensity data. Subtracting the powder pressing intensity data adjustment amount from the initial powder pressing intensity data can obtain the updated powder pressing intensity data.

[0089] The present application will be further described in detail below in combination with the accompanying drawings and one specific embodiment. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0090] The full-automatic Italian coffee machine mainly completes the extraction of coffee powder through high-temperature and high-pressure water. The specific extraction process is as follows: 1. grinding coffee powder and placing the coffee powder in a powder bowl; 2. pressing the loose coffee powder into a powder cake by the extraction head; and 3. injecting water into the powder cake to complete the extraction of coffee. The optimal extraction pressure of coffee is 9 bar. However, the power of the water pump of the coffee machine is constant during the extraction process, which leads to an increase in the water path in the coffee powder cake and a decrease in the resistance after the soluble substances in the coffee are precipitated, so that the extraction pressure is unstable and gradually decreases, which affects the taste of the extracted coffee.

[0091] ​Based on this, the application proposes a coffee machine control method, which adjusts the powder pressing intensity in real time according to the change of the extraction pressure of the coffee machine, realizes the real-time regulation and control of the extraction pressure of the coffee machine, and makes the extraction pressure stable in the suitable extraction pressure range, so that the extraction pressure of the coffee machine is stable and the coffee taste is good.

[0092] In one specific embodiment, the coffee machine is a full-automatic coffee machine, which includes a grinding stage, a powder pressing stage and an extraction stage. Please refer to Figure 3 , the coffee machine includes a motor, a transmission mechanism, an extraction head and a cake accommodating cavity. The grinding stage can grind coffee beans into coffee powder and place the coffee powder in the cake accommodating cavity. In the powder pressing stage, the controller can control the motor to run, and the extraction head is driven to reciprocate and press down in the cake accommodating cavity through the transmission mechanism until the powder pressing stage is completed based on the displacement data of the extraction head or the transmission mechanism, and the loose coffee powder in the cake accommodating cavity is pressed into a coffee cake. In the extraction stage, high-temperature and high-pressure water is injected into the coffee cake through the high-pressure water channel in the extraction head to extract the soluble substances in the coffee cake, and the controller is connected to the motor for controlling the extraction pressure of the coffee machine to realize the extraction of the coffee cake.

[0093] The following takes the flowchart shown in Figure 7 as an example to explain the control principle of the controller for stabilizing the extraction pressure of the coffee machine with the powder pressing intensity data as the motor torque sensor data, which specifically includes the following steps:

[0094] Step 1: After completing the powder pressing, the initial powder pressing intensity data is the motor torque sensor data F1 (10N≤F1≤100N), the extraction of coffee is started, and the extraction time t is recorded;

[0095] Step 2: Determine whether the extraction time t>t1 (the preset time length corresponding to the initial stage, 2s≤t1≤4s, and 3s is specifically set in this embodiment). If yes, go to step 3; if no, return to step 2;

[0096] Step 3: Real-time record the extraction pressure P, and determine whether the extraction pressure P

[0097] Step 4: Increase the initial powder pressing intensity data to obtain the updated powder pressing intensity data F1+F2 (powder pressing intensity data adjustment amount), F2=(P1-P)*N (unit pressure difference corresponding to powder pressing intensity data change amount, 5N≤N≤20N). Return to step 3.

[0098] Step 5: Real-time record the extraction pressure P, and determine whether the extraction pressure P>P2 (the upper limit value of the preset extraction pressure range, 9bar≤P1≤11bar). If yes, go to step 6; if no, go to step 7;

[0099] Step 6: Reduce the initial powdering force data, and obtain the updated powdering force data as: F1-F3 (the powdering force data adjustment amount), F3=(P-P2)*N. Return to step 5.

[0100] Step 7: Determine whether the extraction time t>t2 (the preset extraction time, 5≤t2≤10). If yes, the extraction is completed; if no, go to step 3.

[0101] The following is an example of a flowchart as shown in Figure 7 The control principle of the controller for stabilizing the extraction pressure of the coffee machine is explained and described with the powdering force data as the transmission mechanism displacement data, which specifically includes the following steps:

[0102] Step 1: Complete the powdering, and the initial powdering force data is the transmission mechanism displacement data h1 (25mm≤h1≤30mm). Start the extraction of coffee and record the extraction time t;

[0103] Step 2: Determine whether the extraction time t>t1 (the preset time corresponding to the initial stage, 2s≤t1≤4s, and the specific setting in this embodiment is 3s). If yes, go to step 3; if no, return to step 2;

[0104] Step 3: Real-time record the extraction pressure P, and determine whether the extraction pressure P<P1 (the lower limit value of the preset extraction pressure range, 7bar≤P1≤9bar). If yes, go to step 4; if no, go to step 5;

[0105] Step 4: Increase the initial powdering force data, and obtain the updated powdering force data as: h1+h2 (the powdering force data adjustment amount), h2=(P1-P)*N (the powdering force data change amount corresponding to the unit pressure difference value, 0.1mm≤N≤1mm). Return to step 3.

[0106] Step 5: Real-time record the extraction pressure P, and determine whether the extraction pressure P>P2 (the upper limit value of the preset extraction pressure range, 9bar≤P1≤11bar). If yes, go to step 6; if no, go to step 7;

[0107] Step 6: Reduce the initial powdering force data, and obtain the updated powdering force data as: h1-h3 (the powdering force data adjustment amount), h3=(P-P2)*N. Return to step 5.

[0108] Step 7: judging whether the extraction time t > t2 (preset extraction time, 5 < t2 < 10). If yes, the extraction is ended; if no, entering step 3.

[0109] It should be understood that, although each step in the flowchart involved in each embodiment as described above is shown in sequence according to the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless explicitly stated herein, there is no strict order limitation for the execution of these steps, and these steps can be executed in other orders. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be alternately executed with at least part of other steps or steps or stages in other steps.

[0110] Based on the same inventive concept, the embodiments of the present application also provide a coffee machine control device for implementing the above-mentioned coffee machine control method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, and therefore the specific limitations in one or more coffee machine control device embodiments provided below can refer to the limitations of the coffee machine control method described above, which will not be described here again.

[0111] In one embodiment, as shown in Figure 8 A coffee machine control device is provided, comprising: a running control module 10, a pressure acquisition module 20 and a force adjustment module 30, wherein:

[0112] The running control module 10 is configured to control the motor of the coffee machine to run at the initial powder pressing force data after the coffee machine enters the extraction stage;

[0113] The pressure acquisition module 20 is configured to acquire the extraction pressure of the coffee machine in real time;

[0114] The force adjustment module 30 is configured to adjust the initial powder pressing force data according to the extraction pressure to obtain updated powder pressing force data in the case that the extraction pressure is not in the preset extraction pressure range, and to call the running control module to control the motor to run based on the updated powder pressing force data until the end of the extraction stage.

[0115] In one embodiment, the force adjustment module 30 is further configured to increase the initial powder pressing force data according to the extraction pressure and the lower limit value of the preset extraction pressure range to obtain the updated powder pressing force data in the case that the extraction pressure is less than the lower limit value of the preset extraction pressure range.

[0116] In one embodiment, the force adjustment module 30 is further configured to obtain a powdering force data adjustment amount according to a first pressure difference value between the extraction pressure and the lower limit value of the preset extraction pressure range and a powdering force data change amount corresponding to a unit pressure difference value; and obtain the updated powdering force data as a sum of the initial powdering force data and the powdering force data adjustment amount.

[0117] In one embodiment, the force adjustment module 30 is further configured to, in a case where the extraction pressure is greater than the upper limit value of the preset extraction pressure range, obtain the updated powdering force data by decreasing the initial powdering force data according to the upper limit value of the preset extraction pressure range.

[0118] In one embodiment, the force adjustment module 30 is further configured to obtain a powdering force data adjustment amount according to a second pressure difference value between the extraction pressure and the upper limit value of the preset extraction pressure range and a powdering force data change amount corresponding to a unit pressure difference value; and obtain the updated powdering force data as a difference between the initial powdering force data and the powdering force data adjustment amount.

[0119] In one embodiment, the powdering force data used in the operation control module 10 and the force adjustment module 30 includes at least one of motor electrical parameter data, motor speed data, motor torque sensor data, and transmission mechanism displacement data.

[0120] In one embodiment, the extraction stage includes an initial stage.

[0121] The operation control module 10 is further configured to control the motor of the coffee machine to run for a preset time corresponding to the initial stage at the initial powdering force data.

[0122] In one embodiment, the extraction stage used in the coffee machine control device includes at least one extraction sub-stage, and the initial powdering force data corresponding to each extraction sub-stage is different from the preset extraction pressure range.

[0123] In this embodiment, after the coffee machine enters the extraction stage, the initial powdering force data is used to control the motor of the coffee machine to run, the extraction pressure of the coffee machine is obtained in real time, and in a case where the extraction pressure is not in the preset extraction pressure range, the initial powdering force data is adjusted according to the extraction pressure to obtain updated powdering force data, and the motor is controlled to run based on the updated powdering force data until the end of the extraction stage. Through real-time adjustment and control of the powdering force data, it can be ensured that the extraction pressure is stable in the preset extraction pressure range during the extraction process, and thus the taste of the extracted coffee is good.

[0124] The modules in the coffee machine control device can be implemented by software, hardware, or a combination thereof, in whole or in part. The modules can be embedded in or independent of a processor in the electronic device in hardware form, or stored in a memory in the electronic device in software form, so as to be invoked by the processor to perform the operations corresponding to the modules.

[0125] In one embodiment, a coffee machine is provided, which includes a motor, a transmission mechanism, an extraction head, a powder cake accommodating cavity, and a controller. The motor is connected to the extraction head through the transmission mechanism. The extraction head is at least partially movably arranged in the powder cake accommodating cavity and reciprocally moves in the powder cake accommodating cavity under the driving of the transmission mechanism to press a coffee powder cake arranged in the powder cake accommodating cavity. The extraction head further includes a high-pressure water channel penetrating into the powder cake accommodating cavity. The controller is connected to the motor and is configured to control the extraction pressure of the coffee machine according to the coffee machine control method in any of the above embodiments to realize the extraction of the coffee powder cake.

[0126] In one embodiment, an electronic device, which can be a server, has an internal structure as shown in Figure 9 The electronic device includes a processor, a memory, an input / output interface (I / O), and a communication interface. The processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the electronic device is configured to store initial powder pressing force data, extraction pressure, a preset extraction pressure range, and updated powder pressing force data. The input / output interface of the electronic device is configured to exchange information between the processor and external devices. The communication interface of the electronic device is configured to communicate with external terminals through a network connection. The computer program is executed by the processor to implement a coffee machine control method.

[0127] In one embodiment, an electronic device, which can be a terminal, has an internal structure as shown in Figure 10As shown. The electronic device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through the system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the electronic device is used to provide computing and control capability. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the electronic device is used to exchange information between the processor and external devices. The communication interface of the electronic device is used to communicate with external terminals in a wired or wireless manner. The wireless manner can be realized through WIFI, mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by the processor to realize a coffee machine control method. The display unit of the electronic device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the electronic device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the electronic device, or an external keyboard, touchpad or mouse, etc.

[0128] Those skilled in the art can understand that, Figure 9 With Figure 10 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the electronic device to which the scheme of the present application is applied. The specific electronic device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0129] In one embodiment, an electronic device is provided, including a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the steps of the above method.

[0130] In one embodiment, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to realize the steps of the above method.

[0131] In one embodiment, a computer program product is provided, including a computer program, and the computer program is executed by a processor to realize the steps of the above method.

[0132] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of the country and region.

[0133] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of each method can be included. In the embodiments provided in the present application, any reference to memory, database or other medium can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0134] The technical features of the above embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0135] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A coffee machine control method, characterized in that, The method includes: After the coffee machine enters the first extraction sub-stage, the motor of the coffee machine is controlled to run for a preset duration corresponding to the initial stage of the first extraction sub-stage based on the initial tamping force data corresponding to the first extraction sub-stage. The initial tamping force data is the tamping force data that makes the extraction pressure meet the set optimal extraction pressure. After entering the adjustment phase of the first extraction sub-stage, the extraction pressure of the coffee machine is acquired in real time; If the extraction pressure is not within the preset extraction pressure range corresponding to the first extraction sub-stage, the initial pressing force data corresponding to the first extraction sub-stage is adjusted according to the extraction pressure to obtain the updated pressing force data corresponding to the first extraction sub-stage, and the motor is controlled to run based on the updated pressing force data corresponding to the first extraction sub-stage until the first extraction sub-stage ends. After entering the second extraction sub-stage, the motor of the coffee machine is controlled to run for a preset duration corresponding to the initial stage of the second extraction sub-stage based on the initial tamping force data corresponding to the second extraction sub-stage. After entering the adjustment phase of the second extraction sub-stage, the extraction pressure of the coffee machine is acquired in real time; If the extraction pressure is not within the preset extraction pressure range corresponding to the second extraction sub-stage, the initial pressing force data corresponding to the second extraction sub-stage is adjusted according to the extraction pressure to obtain the updated pressing force data corresponding to the second extraction sub-stage, and the motor is controlled to run based on the updated pressing force data corresponding to the second extraction sub-stage until the second extraction sub-stage ends. The first extraction sub-stage and the second extraction sub-stage have the same runtime, and both include an initial stage and an adjustment stage. The initial pressing force data and preset extraction pressure range corresponding to the first extraction sub-stage are smaller than the initial pressing force data and preset extraction pressure range corresponding to the second extraction sub-stage.

2. The method according to claim 1, characterized in that, If the extraction pressure is not within the preset extraction pressure range, adjust the initial pressing force data according to the extraction pressure to obtain updated pressing force data, including: If the extraction pressure is less than the lower limit of the preset extraction pressure range, the initial pressing force data is increased based on the extraction pressure and the lower limit of the preset extraction pressure range to obtain updated pressing force data.

3. The method according to claim 2, characterized in that, The step of increasing the initial pressing force data based on the extraction pressure and the lower limit of the preset extraction pressure range to obtain updated pressing force data includes: The adjustment amount of the pressing force data is obtained based on the first pressure difference between the extraction pressure and the lower limit of the preset extraction pressure range, and the change in pressing force data corresponding to the unit pressure difference. The sum of the initial pressing force data and the adjustment amount of the pressing force data is used as the updated pressing force data.

4. The method according to claim 1, characterized in that, If the extraction pressure is not within the preset extraction pressure range, adjust the initial pressing force data according to the extraction pressure to obtain updated pressing force data, including: If the extraction pressure is greater than the upper limit of the preset extraction pressure range, the initial pressing force data is reduced according to the extraction pressure and the upper limit of the preset extraction pressure range to obtain updated pressing force data.

5. The method according to claim 4, characterized in that, The step of reducing the initial tamping force data based on the extraction pressure and the upper limit of the preset extraction pressure range to obtain updated tamping force data includes: The adjustment amount of the pressing force data is obtained based on the second pressure difference between the extraction pressure and the upper limit of the preset extraction pressure range, and the change in pressing force data corresponding to the unit pressure difference. The difference between the initial pressing force data and the adjustment amount of the pressing force data is used as the updated pressing force data.

6. The method according to any one of claims 1 to 5, characterized in that, The powder pressing force data includes at least one of the following: motor electrical parameter data, motor speed data, motor torque sensor data, and transmission mechanism displacement data.

7. A coffee machine control device, characterized in that, The device includes: The operation control module is used to control the motor of the coffee machine to run for a preset duration corresponding to the initial stage of the first extraction sub-stage after the coffee machine enters the first extraction sub-stage, based on the initial tamping force data corresponding to the first extraction sub-stage. The initial tamping force data is the tamping force data that makes the extraction pressure meet the set optimal extraction pressure. The pressure acquisition module is used to acquire the extraction pressure of the coffee machine in real time after entering the adjustment stage of the first extraction sub-stage. The pressure adjustment module is used to adjust the initial pressing pressure data corresponding to the first extraction sub-stage according to the extraction pressure when the extraction pressure is not within the preset extraction pressure range corresponding to the first extraction sub-stage, obtain the updated pressing pressure data corresponding to the first extraction sub-stage, and call the operation control module to control the motor to run based on the updated pressing pressure data corresponding to the first extraction sub-stage until the first extraction sub-stage ends. The operation control module is also used to control the motor of the coffee machine to run for a preset duration corresponding to the initial stage of the second extraction sub-stage after entering the second extraction sub-stage, based on the initial tamping force data corresponding to the second extraction sub-stage. The pressure acquisition module is also used to acquire the extraction pressure of the coffee machine in real time after entering the adjustment stage of the second extraction sub-stage; The force adjustment module is also used to adjust the initial pressing force data corresponding to the second extraction sub-stage according to the extraction pressure when the extraction pressure is not within the preset extraction pressure range corresponding to the second extraction sub-stage, obtain the updated pressing force data corresponding to the second extraction sub-stage, and control the motor to run based on the updated pressing force data corresponding to the second extraction sub-stage until the second extraction sub-stage ends. The first extraction sub-stage and the second extraction sub-stage have the same runtime, and both include an initial stage and an adjustment stage. The initial pressing force data and preset extraction pressure range corresponding to the first extraction sub-stage are smaller than the initial pressing force data and preset extraction pressure range corresponding to the second extraction sub-stage.

8. A coffee machine, characterized in that, The coffee machine includes a motor, a transmission mechanism, an extraction head, a coffee pouch container, and a controller. The motor is connected to the extraction head through the transmission mechanism. The extraction head is at least partially movably fitted inside the coffee pouch container and reciprocates within the container under the drive of the transmission mechanism, compressing the coffee pouch placed inside. The extraction head also includes a high-pressure water channel extending into the coffee pouch container. The controller is connected to the motor and is used to control the extraction pressure of the coffee machine according to any one of claims 1 to 6, so as to extract the coffee pouch.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

11. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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