Coffee machine system capable of automatically correcting powder

Abstract

The utility model discloses a coffee machine system capable of automatically correcting powder, which comprises a bean grinding mechanism, a powder pressing and brewing mechanism, a main control unit, a calculation and storage unit and a powder correcting trigger unit, the calculation and storage unit and the powder correcting trigger unit are respectively connected with the main control unit, the powder pressing and brewing mechanism further comprises a brewing stroke detection unit, and the brewing stroke detection unit is connected with the calculation and storage unit. The brewing stroke detection unit is connected with the calculation and storage unit through the main control unit, the calculation and storage unit is used for calibrating the bean grinding time, and the main control unit controls the bean grinding time of the bean grinding mechanism when the lower cup of coffee is made according to the calibrated bean grinding time. According to the coffee machine system capable of automatically correcting the powder, the bean grinding time can be calibrated, beans are ground according to the calibrated bean grinding time, coffee in a lower cup is made, the powder output accuracy and consistency when coffee is made under the using states of different users are improved, and the quality and taste of the coffee are guaranteed or improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine powder calibration technical field, in particular to a kind of coffee machine systems of automatic powder calibration. BACKGROUND

[0002] The household coffee machine on current market cannot carry out automatic powder calibration, when adding different coffee beans or adjusting different powder position of fineness, it will cause the difference between coffee machine powder and set powder amount, so as to not reach the coffee taste that user wants.

[0003] Coffee machine is controlled by grinding beans to control powder amount, and powder amount is controlled by grinding time and powder efficiency, when user adjusts grinding powder fineness position, the fineness of powder material is different, and the grinding amount of unit time, i.e.

[0004] In addition, when using different coffee beans, it is influenced by factors such as producing place, baking degree, bean size, etc. INVENTION CONTENTS

[0005] To solve the above technical problem, one technical scheme of the utility model is as follows:

[0006] Provide a kind of coffee machine system of automatic powder calibration, it includes:

[0007] Grinding mechanism, it includes grinding motor and grinding cutter head, the grinding motor drives the grinding cutter head to work to grind coffee bean powder;

[0008] Powder pressing brewing mechanism, it includes brewing cavity, brewing head assembly and drive transmission assembly, which drives the brewing head to press the coffee bean powder into powder cake in the brewing cavity;

[0009] The main control unit is electrically connected with the coffee bean grinding mechanism and the powder pressing and brewing mechanism respectively; characterized in that, the utility model further includes a calculation storage unit and a powder calibration triggering unit, the calculation storage unit and the powder calibration triggering unit are connected with the main control unit respectively, the calculation storage unit stores preset powder cake thickness and preset coffee bean grinding time corresponding to different coffee machine richness degree position parameters, the powder pressing and brewing mechanism further includes a brewing stroke detection unit, the brewing stroke detection unit is connected with the calculation storage unit through the main control unit, the calculation storage unit is used for calibrating the coffee bean grinding time and feeding back the calibrated coffee bean grinding time to the main control unit, and the main control unit controls the coffee bean grinding time of the coffee bean grinding mechanism when making coffee in the next cup according to the calibrated coffee bean grinding time.

[0010] In a preferred embodiment of the utility model, the powder fineness position sensor is connected with the powder fineness position in the coffee machine to detect the adjustment change of the powder fineness position in the coffee machine in real time.

[0011] In a preferred embodiment of the utility model, the bean adding detection sensor is connected with the bean bin in the coffee machine to detect the coffee bean adding or replacing condition in the bean bin of the coffee machine in real time.

[0012] In a preferred embodiment of the utility model, the powder calibration triggering unit includes a user triggering unit, the user triggering unit is used for sending a powder calibration triggering signal to the main control unit under the manual or remote operation of the user, preferably, the user triggering unit includes a powder calibration confirmation button, a powder calibration confirmation key or a coffee machine touch screen with powder calibration selection or confirmation function.

[0013] In a preferred embodiment of the utility model, the brewing stroke detection unit includes a stroke sensor, the stroke sensor is used for detecting the displacement or stroke distance of the brewing head assembly or the driving transmission assembly and sending the displacement or stroke distance information to the main control unit.

[0014] In a preferred embodiment of the utility model, the brewing stroke detection unit includes an encoder, the encoder is used for detecting the rotation number and rotation time of the driving transmission assembly and sending the rotation number and time length information to the main control unit.

[0015] In a preferred embodiment of the utility model, the bean grinding mechanism further comprises a bean grinding cavity and a powder guide funnel, the bean grinding disc is arranged in the bean grinding cavity, and the coffee beans in the bean grinding cavity are ground into coffee bean powder under the driving of the bean grinding motor, the powder guide funnel is in communication with the bean grinding cavity, and the coffee bean powder in the bean grinding cavity is sent out through the powder guide funnel; preferably, a powder pushing part is arranged on the bean grinding disc, and the coffee bean powder in the bean grinding cavity is pushed into the powder guide funnel through the rotation of the bean grinding disc.

[0016] In a preferred embodiment of the utility model, the brewing cavity is arranged below the powder guide funnel, so that the coffee bean powder in the bean grinding cavity enters the brewing cavity through the powder guide funnel.

[0017] In a preferred embodiment of the utility model, the powder pressing and brewing mechanism further comprises a brewer support, the brewing cavity and the driving transmission assembly are arranged on the brewer support, and the brewing cavity is arranged below the brewing head assembly.

[0018] In a preferred embodiment of the utility model, the driving transmission assembly comprises a driving motor and a spiral transmission mechanism, and the driving motor drives the brewing head to move up and down through the spiral transmission mechanism.

[0019] The utility model discloses a coffee machine system of automatic calibration of powder, which comprises a coffee machine body, a bean grinding mechanism, a powder pressing and brewing mechanism and a calibration unit. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor, wherein:

[0021] Figure 1 It is the explosion structure schematic diagram of a preferred embodiment of the utility model's automatic calibration of powder coffee machine system;

[0022] Figure 2It is a kind of automatic powder correction coffee machine system a preferred embodiment of principle structure schematic diagram of the utility model;

[0023] Figure 3 It is a kind of automatic powder correction coffee machine system a preferred embodiment of stroke schematic diagram of the utility model;

[0024] Figure 4 It is a kind of automatic powder correction coffee machine system a preferred embodiment of frame structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0026] Please refer to Figures 1-4 The utility model embodiment includes:

[0027] An automatic powder correction coffee machine system, which comprises a bean grinding mechanism 1, a powder pressing and brewing mechanism 2, a main control unit 101, a calculation and storage unit 102 and a powder correction triggering unit 103, the main control unit 101 is electrically connected with the bean grinding mechanism 1 and the powder pressing and brewing mechanism 2 respectively, and the main control unit 101 is also connected with the calculation and storage unit 102 and the powder correction triggering unit 103, the calculation and storage unit 102 stores preset powder cake thickness corresponding to different strength level parameters of the coffee machine and preset bean grinding time, and calibrates the bean grinding time, the calculation and storage unit 102 feeds back the calibrated bean grinding time to the main control unit 101, and the main control unit 101 controls the bean grinding time of the bean grinding mechanism 1 when making coffee in the next cup according to the calibrated bean grinding time.

[0028] Further, the bean grinding mechanism 1 comprises a bean grinding motor 11 and a bean grinding cutter 12, the bean grinding motor 11 drives the bean grinding cutter 12 to work to grind coffee bean powder.

[0029] In some embodiments of the application, the bean grinding mechanism further comprises a bean grinding cavity 13 and a powder guide funnel 14, the bean grinding cutter 12 is arranged in the bean grinding cavity 13 to grind coffee beans in the bean grinding cavity 13 into coffee bean powder under the driving of the bean grinding motor 11, and the powder guide funnel 14 is communicated with the bean grinding cavity 13 to send out the coffee bean powder in the bean grinding cavity 13.

[0030] In some embodiments of the present application, the grinding disc 12 comprises a driving grinding disc 121 connected with the grinding motor 11 and a passive grinding disc (not labeled in the figure) located below the driving grinding disc 121, which is stationary relative to the grinding cavity 13.

[0031] Specifically, when the grinding motor 11 drives the driving grinding disc 121 to rotate through the transmission gear, the coffee beans in the coffee machine fall into the space between the driving grinding disc 121 and the passive grinding disc, and the grinding motor 11 drives the driving grinding disc 121 to rotate to grind the coffee beans into coffee powder through the grinding teeth on the driving grinding disc 121 and the passive grinding disc, and the coffee powder falls into the grinding cavity 13.

[0032] Optionally, the driving grinding disc 121 is provided with a powder pushing part (not labeled in the figure), which rotates with the driving grinding disc 121. When the driving grinding disc 121 rotates, the powder pushing part rotates and pushes the coffee powder in the grinding cavity 13 into the powder guide funnel 14, improving the efficiency of the coffee powder delivery and avoiding the coffee powder remaining in the grinding cavity 13, which not only prevents the waste of coffee powder but also prevents the mixing of different coffee powders, which affects the quality and taste of coffee.

[0033] Further, the powder pressing and brewing mechanism 2 comprises a brewing cavity 21, a brewing head assembly 22 and a driving transmission assembly 23, and the powder outlet of the grinding mechanism 1 is in communication with the brewing cavity 21 during the grinding process; after the grinding is completed, the driving transmission assembly 23 drives the brewing head assembly 22 to press the coffee powder into a powder cake in the brewing cavity 21 and then perform brewing and extraction.

[0034] In some embodiments of the present application, the powder pressing and brewing mechanism 2 further comprises a brewer support 24, and the brewing cavity 21 and the driving transmission assembly 23 are arranged on the brewer support 24, and the brewing cavity 21 is located below the brewing head assembly 22.

[0035] Optionally, the driving transmission assembly 23 comprises a driving motor 231 and a screw transmission mechanism, and the driving motor drives the brewing head to move up and down through the screw transmission mechanism. The screw transmission mechanism comprises a screw rod 232 and a nut 233 threadedly connected with the screw rod 232, one end of the screw rod 232 is connected with the brewing head assembly 22, the other end is connected with the driving motor 231, and the nut 233 is arranged in the brewing cavity 21. When the driving motor 231 drives the screw rod 232 to rotate, the screw rod 232 drives the brewing head assembly 22 to compress the coffee powder downward to form a powder cake under the action of the nut 233, which remains stationary; when the driving motor 231 drives the screw rod 232 to rotate in the opposite direction, the screw rod 232 drives the brewing head assembly 22 to move upward under the action of the nut 233.

[0036] Further, the powder pressing brewing mechanism 2 comprises a brewing stroke detection unit 25 for obtaining the actual powder pressing stroke of the powder pressing brewing mechanism 2 of the coffee machine during powder pressing, and the brewing stroke detection unit 25 is connected to the main control unit 101 and the calculation storage unit 102 to finally send the actual powder pressing stroke information to the calculation storage unit 102.

[0037] In some embodiments of the present application, the brewing stroke detection unit 25 comprises a stroke sensor (not shown in the figure) for detecting the displacement or stroke distance of the brewing head assembly 22 or the driving transmission assembly 23 and sending the displacement or stroke distance information to the main control unit 101.

[0038] In some other embodiments of the present application, the brewing stroke detection unit 25 comprises an encoder (not shown in the figure) for detecting the number of rotations and the rotation time of the driving transmission assembly and sending the number of rotations and the time information to the main control unit 101.

[0039] In some other embodiments of the present application, the brewing stroke detection unit 25 comprises a rotation number detector (not shown in the figure) for detecting the number of rotations of the driving transmission assembly 23 and a rotation time detector (not shown in the figure) for detecting the rotation time of the driving transmission assembly 23, and the number of rotations and the rotation time information are sent to the main control unit 101 respectively.

[0040] In some embodiments of the present application, the main control unit 101 and the calculation storage unit 102 are in communication connection or electrical connection.

[0041] In some embodiments of the present application, when the ground coffee powder enters the brewing chamber 24 for powder pressing, if the brewing stroke detection unit 25 of the powder pressing brewing mechanism 2 detects that the brewing head assembly 22 has no displacement change within a preset time threshold, the driving motor 231 driving the brewing head assembly 22 to continue powder pressing is stopped, so as to end the powder pressing to determine the actual powder pressing thickness. In some embodiments, the coffee machine powder pressing brewing mechanism 2 has a current detection circuit for detecting the instantaneous current of the driving motor 231, and when the instantaneous current of the driving motor 231 is greater than a preset value and / or the brewing stroke detection unit 25 detects that the brewing head assembly 22 has no displacement change within a preset time threshold during powder pressing, the driving motor 231 driving the brewing head assembly 22 to continue powder pressing is stopped, so as to end the powder pressing to determine the actual powder pressing thickness.

[0042] In some embodiments of the present application, the main control unit 101 can adopt a microchip with data processing capability such as MCU, and the calculation storage unit 102 can adopt a chip or circuit structure with data processing and storage capability.

[0043] Further, the powder calibration triggering unit 103 comprises a powder fineness output level sensor (not shown in the figure), which is connected to the powder fineness output level of the coffee machine, for detecting the adjustment of the powder fineness output level in real time.

[0044] Further, the powder calibration triggering unit 103 comprises a bean adding detection sensor (not shown in the figure), which is connected to the bean bin of the coffee machine, for detecting the addition or replacement of coffee beans in the bean bin in real time. Optionally, the bean adding detection sensor can be a Hall sensor, an infrared detection sensor or a laser detection sensor.

[0045] In some embodiments of the present application, the bean adding detection sensor can be a weight sensor for detecting the weight of coffee beans in the bean bin, and the powder calibration is triggered when the weight sensor detects an increase in the weight of coffee beans in the bean bin.

[0046] In some other embodiments of the present application, the bean adding detection sensor can be a sensing sensor for detecting whether coffee beans enter the feeding port of the bean bin, and the powder calibration is triggered when the sensing sensor detects that no coffee beans enter the feeding port within a certain period of time after detecting that coffee beans enter the feeding port.

[0047] In some embodiments, the powder calibration triggering unit 103 comprises a user triggering unit (not shown in the figure), which is used to send a powder calibration triggering signal to the main control unit 101 under the manual or remote operation of the user.

[0048] Optionally, the user triggering unit comprises a powder calibration confirmation button or a powder calibration confirmation key, which can be a virtual button provided on the touch screen of the coffee machine, or a powder calibration selection or confirmation function provided on the touch screen of the coffee machine.

[0049] The automatic powder calibration steps of the coffee machine system of the present application comprise:

[0050] Step S1, obtaining information of a powder calibration starting mode, so as to trigger the starting of the powder calibration program according to the information of the powder calibration starting mode.

[0051] Further, the powder calibration starting mode comprises one or more of a detection calibration mode, a user calibration mode or a continuous calibration mode. The user can set and select the powder calibration starting mode according to his own use habits.

[0052] Further, the step of triggering the starting of the powder calibration program in the detection calibration mode comprises: when the powder fineness output level adjustment information, the bean bin bean adding information or the powder cake thickness abnormal change information is detected, the powder calibration is started.

[0053] In some embodiments of the present application, the step of starting the calibration of the powder according to the information of the adjustment of the powder fineness level includes: the powder fineness level sensor detects the adjustment of the powder fineness level in the coffee machine in real time, when the adjustment of the powder fineness level is detected, the powder fineness level sensor sends the information of the adjustment of the powder fineness level to the main control unit 101, so that the main control unit 101 controls the calculation storage unit 102 to start the calibration program.

[0054] In some embodiments of the present application, the step of starting the calibration of the powder according to the information of the adjustment of the powder fineness level includes: the powder fineness level sensor detects the adjustment of the powder fineness level in the coffee machine in real time, when the adjustment of the powder fineness level is detected, the powder fineness level sensor sends the information of the adjustment of the powder fineness level to the main control unit 101, so that the main control unit 101 controls the calculation storage unit 102 to start the calibration program.

[0055] In some embodiments of the present application, the step of starting the calibration of the powder according to the information of the adjustment of the powder fineness level includes: the powder fineness level sensor detects the adjustment of the powder fineness level in the coffee machine in real time, when the adjustment of the powder fineness level is detected, the powder fineness level sensor sends the information of the adjustment of the powder fineness level to the main control unit 101, so that the main control unit 101 controls the calculation storage unit 102 to start the calibration program.

[0056] In some embodiments of the present application, the step of starting the calibration of the powder according to the information of the adjustment of the powder fineness level includes: the powder fineness level sensor detects the adjustment of the powder fineness level in the coffee machine in real time, when the adjustment of the powder fineness level is detected, the powder fineness level sensor sends the information of the adjustment of the powder fineness level to the main control unit 101, so that the main control unit 101 controls the calculation storage unit 102 to start the calibration program. + , and n≥2.

[0057] In some embodiments, the above-mentioned powder cake thickness variation threshold value can be a specific variation value, such as a thickness difference of 1 mm, 1.5 mm or 2 mm, etc. to trigger the powder calibration, or can also be represented by a percentage, such as a powder cake thickness difference percentage between the actual powder cake thickness of this time and the actual powder cake thickness of the previous time, or a percentage of the difference between the actual powder cake thickness of this time and the average of the actual powder cake thicknesses of the previous n times, such as a difference of 5%, 10% or 15% to trigger the powder calibration. In other embodiments, the number of rotations of the driving motor of the powder pressing and brewing mechanism 2 can also be used to represent the thickness of the powder cake and the thickness difference.

[0058] Further, in the user powder calibration mode, the step of triggering the powder calibration program to start includes: when the coffee machine main control unit 101 receives the powder calibration start signal sent by the user, the powder calibration is started.

[0059] In some embodiments of the present application, the user can send the powder calibration start signal to the main control unit through the powder calibration confirmation button, the powder calibration confirmation key or the coffee machine touch screen, etc. to make the main control unit 101 control the calculation storage unit 102 to perform the powder calibration.

[0060] In other embodiments of the present application, the user can send the powder calibration start signal to the main control unit 101 through the remote controller, mobile phone, computer or other remote control terminal connected with the coffee machine main control unit 101, and the main control unit 101 controls the calculation storage unit 102 to perform the powder calibration after receiving the powder calibration start signal.

[0061] Further, in the continuous powder calibration mode, the step of triggering the powder calibration program to start includes: every time the coffee dispensing amount of the coffee machine reaches the preset dispensing amount threshold value, a powder calibration is automatically started.

[0062] Specifically, when the preset dispensing amount threshold value is 2, the actual dispensing amount of the coffee machine is obtained or detected in real time, and the actual dispensing amount can be recorded by a counter. When the actual dispensing amount of the coffee machine is 2, the main control unit 101 controls the calculation storage unit to automatically perform the powder calibration, and at this time, the count of the counter is reset to zero, forming a powder calibration cycle.

[0063] In step S2, according to the user selection or the current default strength parameter of the coffee machine, the preset powder cake thickness and the preset bean grinding time corresponding to the strength parameter in the coffee making process are obtained.

[0064] Further, the calculation storage unit 102 can store a plurality of different strength parameters, and each strength parameter corresponds to a set of preset powder cake thickness and preset bean grinding time stored in the calculation storage unit 102.

[0065] Step S3, obtaining an actual cake thickness of the cake formed by the actual powder pressing, and determining a calibrated coffee making calibration grinding time according to the preset cake thickness, the actual cake thickness, and the preset grinding time.

[0066] Further, the step of obtaining the actual cake thickness of the cake formed by the actual powder pressing comprises:

[0067] Step (a), obtaining an actual powder pressing stroke generated by the powder pressing brewing mechanism 2 in the previous or previous multiple powder pressing, and a known maximum stroke of the powder pressing brewing mechanism 2 when there is no powder in the brewing cavity 21.

[0068] In some embodiments of the present application, when the encoder is used for stroke detection, the encoder obtains actual rotation number information and actual rotation time information of the driving transmission assembly in the powder pressing brewing mechanism 2 in real time and sends them to the main control unit 101, and the main control unit 101 calculates the actual stroke distance according to the actual rotation number, the actual rotation time, and the transmission parameter.

[0069] In some embodiments of the present application, when the encoder is used for stroke detection, the encoder obtains actual rotation number information and actual rotation time information of the driving transmission assembly in the powder pressing brewing mechanism 2 in real time and sends them to the main control unit 101, and the main control unit 101 calculates the actual stroke distance according to the actual rotation number, the actual rotation time, and the transmission parameter.

[0070] Wherein, the method of calculating the stroke distance by using the rotation number and the rotation time is a conventional technical means in the art, which will not be described here.

[0071] Step (b), calculating the actual cake thickness according to the maximum stroke and the actual powder pressing stroke.

[0072] In some embodiments of the present application, the difference between the maximum stroke L1 and the actual powder pressing stroke L2 generated in the previous powder pressing is calculated, and the difference is the actual cake thickness L, that is, L=L1-L2.

[0073] In some embodiments of the present application, the average value of the actual powder pressing strokes generated in the previous n times of powder pressing is calculated , and the difference between the maximum stroke L1 and the average value is calculated, and the difference is the average value of the actual cake thickness , that is . Wherein, when calculating the average value of the actual powder pressing stroke, the value of n can be adjusted according to the actual use requirement and the calculation amount, and n∈N + , and n≥2.

[0074] Further, in order to ensure the taste and quality of coffee, the actual powder amount should be consistent with the predetermined powder amount as much as possible, so the calibration grinding time or wherein, L0 is a preset cake thickness, L is an actual cake thickness, T0 is a preset grinding time, is an average value of multiple actual cake thicknesses.

[0075] In some embodiments of the present application, when in the continuous calibration mode and the cup threshold is n, the coffee machine starts the calibration program once every n cups of coffee, and the calibration grinding time of the n+1th cup of coffee after calibration is or wherein, L0 is a preset cake thickness, L n is the cake thickness when the nth cup of coffee is made, L i is the cake thickness when the ith cup of coffee is made, T0 is a preset grinding time, n∈N + , and n≥1, i∈N + .

[0076] Step S4, the calibration grinding time is sent to the grinding mechanism 1, so that the coffee is made by grinding according to the latest calibrated calibration grinding time next time.

[0077] Specifically, the calculation storage unit 102 sends the calibration grinding time to the main control unit 101, and the main control unit 101 controls the grinding motor 11 to work according to the calibration grinding time, so that the grinding cutter head 12 performs grinding operation at the calibration grinding time.

[0078] The beneficial effects of the coffee machine system for automatic calibration are: the calibration trigger unit is used to control the start of the coffee machine calibration, and the brewing stroke detection unit is used to obtain the stroke of the driving transmission assembly in real time, so that the calculation storage unit can calibrate the grinding time of the coffee machine according to the preset cake thickness, the preset grinding time and the actual cake thickness, so that the coffee machine can grind and make the next cup of coffee according to the calibrated grinding time, solve the problem that the actual powder output is inconsistent with the preset powder output due to different coffee beans or powder grinding position adjustment when making coffee drinks, improve the powder output accuracy when making coffee under different user usage conditions, and ensure or improve the quality and taste of coffee.

[0079] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process conversion according to the content of the present application specification, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An automatic coffee powder calibration system, characterized in that, include: A coffee grinding mechanism, comprising a coffee grinding motor and a coffee grinding disc, wherein the coffee grinding motor drives the coffee grinding disc to grind coffee beans into powder; A coffee bean tamping and brewing mechanism includes a brewing chamber, a brewing head assembly, and a drive transmission assembly that drives the brewing head assembly to tamp the coffee bean powder into a patty within the brewing chamber. The drive transmission assembly includes a drive motor and a screw transmission mechanism, wherein the drive motor drives the brewing head assembly to move up and down through the screw transmission mechanism. The main control unit is electrically connected to both the grinding mechanism and the tamping and brewing mechanism. It is characterized by further including a calculation and storage unit and a calibration trigger unit, both connected to the main control unit. The calculation and storage unit stores preset puck thicknesses and preset grinding times corresponding to different strength levels of the coffee machine. The tamping and brewing mechanism also includes a brewing stroke detection unit, connected to the calculation and storage unit via the main control unit. The calculation and storage unit calibrates the grinding time and feeds the calibrated grinding time back to the main control unit. The main control unit controls the grinding time of the grinding mechanism based on the calibrated grinding time when brewing the next cup of coffee.

2. The automatic coffee powder calibration system according to claim 1, characterized in that, The powder calibration trigger unit includes a powder coarseness level sensor, which is connected to the powder coarseness level in the coffee machine to detect the adjustment changes of the powder coarseness level in the coffee machine in real time.

3. The automatic coffee powder calibration system according to claim 1, characterized in that, The coffee bean calibration trigger unit includes a bean addition detection sensor, which is connected to the bean hopper in the coffee machine to detect in real time whether coffee beans are added or replaced in the coffee machine's bean hopper.

4. The automatic coffee powder calibration system according to claim 1, characterized in that, The calibration trigger unit includes a user trigger unit, which is used to send a calibration trigger signal to the main control unit under the manual or remote operation of the user.

5. The automatic coffee powder calibration system according to claim 4, characterized in that, The user triggering unit includes a coffee powder calibration confirmation button, a coffee powder calibration confirmation key, or a coffee machine touch screen with coffee powder calibration selection or confirmation functions.

6. The automatic coffee powder calibration system according to claim 1, characterized in that, The brewing stroke detection unit includes a stroke sensor, which is used to detect the displacement or stroke distance of the brewing head assembly or the drive transmission assembly, and send the displacement or stroke distance information to the main control unit.

7. The automatic coffee powder calibration system according to claim 1, characterized in that, The brewing stroke detection unit includes an encoder, which is used to detect the number of rotations or angles of the drive transmission component and the rotation time, and sends the number of rotations and duration information to the main control unit.

8. The automatic coffee powder calibration system according to any one of claims 1-7, characterized in that, The grinding mechanism also includes a grinding chamber and a powder guide funnel. The grinding disc is disposed in the grinding chamber to grind the coffee beans in the grinding chamber into coffee powder under the drive of the grinding motor. The powder guide funnel is connected to the grinding chamber and is used to deliver the coffee powder out of the grinding chamber.

9. The automatic coffee powder calibration system according to claim 8, characterized in that, The grinding disc is equipped with a powder-pushing section, which is used to push and sweep coffee bean powder in the grinding chamber into the powder-guiding funnel as the grinding disc rotates.

10. The automatic coffee powder calibration system according to claim 8, characterized in that, The brewing chamber is located below the powder funnel, so that coffee bean powder in the grinding chamber enters the brewing chamber through the powder funnel.

11. The automatic coffee powder calibration system according to any one of claims 1-7, characterized in that, The powder-pressing and brewing mechanism also includes a brewer support, the brewing chamber and the drive transmission assembly are disposed on the brewer support, and the brewing chamber is located below the brewing head assembly.

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