CN109480607B - Stirring positioning method of cooker and cooker - Google Patents

Stirring positioning method of cooker and cooker Download PDF

Info

Publication number
CN109480607B
CN109480607B CN201811599182.3A CN201811599182A CN109480607B CN 109480607 B CN109480607 B CN 109480607B CN 201811599182 A CN201811599182 A CN 201811599182A CN 109480607 B CN109480607 B CN 109480607B
Authority
CN
China
Prior art keywords
signal
component
stirring assembly
stirring
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811599182.3A
Other languages
Chinese (zh)
Other versions
CN109480607A (en
Inventor
朱泽春
林敏勇
彭碧华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joyoung Co Ltd
Original Assignee
Joyoung Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Joyoung Co Ltd filed Critical Joyoung Co Ltd
Priority to CN201811599182.3A priority Critical patent/CN109480607B/en
Publication of CN109480607A publication Critical patent/CN109480607A/en
Application granted granted Critical
Publication of CN109480607B publication Critical patent/CN109480607B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

The text discloses a stirring positioning method of a cooker and the cooker. The stirring positioning method of the cooker comprises the following steps: the control module receives an output signal of the detection module; the detection module comprises a first component arranged on the stirring assembly and a second component arranged on the pot cover or the pot body, and the second component is used for outputting a conducting or disconnecting signal according to the position change between the first component and the second component; the control module judges whether the stirring assembly is installed or not according to the output signal of the detection module; the stirring assembly comprises a transmission shaft and stirring blades, the transmission shaft is detachably connected with an output shaft of the motor, and the stirring blades are driven by the output shaft to rotate; after the control module determines that the stirring assembly is installed, the control module determines the periodic change rule of the rotation angle of the stirring assembly according to the output signal of the detection module, and controls the motor to stop according to the change rule so that the stirring assembly stays at the designated position. The technical scheme can realize the accurate positioning control of the stirring assembly of the cooker.

Description

Stirring positioning method of cooker and cooker
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to a stirring positioning method of a cooker and the cooker.
Background
The dish frying machine is an intelligent kitchen appliance capable of realizing an automatic cooking process, and has the functions of automatically heating oil, automatically frying, automatically controlling the duration and degree of heating and the like. At present, a frying machine on the market generally comprises a pot body, a pot cover, a stirring assembly, a motor and a controller. The internal inner bag that is equipped with of pot, the pot cover lock pot body, stirring subassembly include transmission shaft and stirring leaf, and the transmission shaft is connected with the motor, and the motor can drive the transmission shaft and rotate, and then drives the stirring leaf and rotate in the inner bag, turns over the stir-fry to food.
The stirring assembly of a cooker is typically removably mounted to the underside of the lid. However, when the cooker is opened, different user experiences can be brought due to the various shapes of the stirring blades and the different positions of the stirring blades in the inner container. As shown in fig. 1, there is a stirring assembly including two sets of stirring blades with different shapes, when stirring is stopped, if the stirring blade with a wider cross section is horizontal (assuming that the connection direction between the buckling position of the pot cover and the pot body and the opposite end is vertical), it is easy to hang the dishes in the process of opening the cover, which affects the dish containing experience of the user.
Disclosure of Invention
The embodiment of the invention provides a stirring positioning method of a cooker and the cooker, which can realize the positioning control of a stirring component of the cooker.
The embodiment of the invention provides a stirring positioning method of a cooker, which comprises the following steps:
the control module receives an output signal of the detection module; the detection module comprises a first component arranged on the stirring assembly and a second component arranged on the pot cover or the pot body, and the second component is used for outputting a connection or disconnection signal according to the position change between the first component and the second component;
the control module judges whether the stirring assembly is installed or not according to the output signal of the detection module; the stirring assembly comprises a transmission shaft and stirring blades, the transmission shaft is detachably connected with an output shaft of the motor, and the stirring blades are driven by the output shaft to rotate;
and after the control module determines that the stirring assembly is installed, the control module determines the periodic change rule of the rotation angle of the stirring assembly according to the output signal of the detection module, and controls the motor to stop according to the change rule so as to enable the stirring assembly to stop at the specified position.
In an exemplary embodiment, determining a periodic variation law of a rotation angle of the stirring assembly according to an output signal of the detection module, and controlling a motor to stop rotating according to the variation law so that the stirring assembly stays at a designated position includes:
receiving an output signal of a detection module within a preset time, and determining a periodic variation rule of a rotation angle of the stirring assembly according to the alternating variation characteristic of the on and off of the output signal;
searching for a reference starting time t within one rotation period of the stirring assemblycFrom said reference starting instant tcAfter the timing is started for a specified time t, the motor is controlled to stop rotating so that the stirring assembly stays at a specified position;
wherein the preset time includes: one or more motor rotation cycles.
In an exemplary embodiment, the reference start time tcIncluding any of the following: the time when the on signal is switched to the off signal; the time when the off signal is switched to the on signal; the middle time of the conducting signal interval; the middle time of the off signal interval.
In an exemplary embodiment, the specified time period t is preset.
In an exemplary embodiment, the specified time t is a reference starting time t according to a specified position where the stirring component needs to staycAnd motor speed determination:
when the reference starting time tcWhen the position is ahead of the designated position b where the stirring component needs to stay in one period, t is [ b/(6v)]-tc；
When the reference starting time tcLagging behind the designated position b where the stirring component needs to stay in one period, t ═ b/(6v)]+(T-tc)；
Wherein b is the rotation angle of the stirring component corresponding to the specified position where the stirring component needs to stay, v is the rotation speed of the motor, the unit is (revolution/minute), T is the rotation period of the stirring component, T, T and TcThe unit of (d) is seconds.
In an exemplary embodiment, the first component is a permanent magnet and the second component is a magnetic inductor; or the first component is a salient point contact structure or a mechanical transmission structure arranged on the transmission shaft, and the second component is a microswitch.
In an exemplary embodiment, the second component is a reed switch, the reed switch is vertically arranged on the periphery of the transmission shaft, and the permanent magnet is embedded in the transmission shaft; or the second component is a reed switch, the reed switch is transversely and symmetrically arranged by taking the central axis of the cross section of the transmission shaft as a symmetry axis, the reed switch is arranged above the transmission shaft, and the permanent magnet is embedded in the transmission shaft.
An embodiment of the present invention further provides a cooker, including: the stirring assembly comprises a transmission shaft and stirring blades, the transmission shaft is detachably connected with an output shaft of the motor, and the stirring blades are driven by the output shaft to rotate;
the cooker also comprises a detection module and a control module; the detection module comprises a first component arranged on the stirring assembly and a second component arranged on the pot cover or the pot body, and the second component is used for outputting a connection or disconnection signal according to the position change between the first component and the second component;
the control module is used for receiving the output signal of the detection module, judging whether the stirring assembly is installed or not according to the output signal of the detection module, determining the periodic change rule of the rotation angle of the stirring assembly according to the output signal of the detection module after the stirring assembly is determined to be installed, and controlling the motor to stop according to the change rule so that the stirring assembly stops at the designated position.
In an exemplary embodiment, the control module is configured to determine a periodic variation law of a rotation angle of the stirring assembly according to an output signal of the detection module, and control the motor to stop rotating according to the variation law so that the stirring assembly stays at a specified position: receiving an output signal of a detection module within a preset time, and determining a periodic variation rule of a rotation angle of the stirring assembly according to the alternating variation characteristic of the on and off of the output signal; searching for a reference starting time t within one rotation period of the stirring assemblycFrom said reference starting instant tcAfter the timing is started for a specified time t, the motor is controlled to stop rotating so that the stirring assembly stays at a specified position; wherein the preset time includes: one or more motor rotation cycles.
In an exemplary embodiment, the reference start time tcIncluding any of the following: the time when the on signal is switched to the off signal; the time when the off signal is switched to the on signal; the middle time of the conducting signal interval; the middle time of the off signal interval.
Compared with the prior art, the stirring positioning method of the cooker and the cooker provided by the embodiment of the invention have the advantages that the control module detects whether the stirring assembly is installed through the detection module, under the condition that the stirring assembly is installed, the control module determines the position change rule of the first component relative to the second component according to the output signal of the detection module, the first component is arranged on the stirring assembly, the second component is arranged on the cooker cover or the cooker body of the cooker, the position change rule of the first component relative to the second component is also the rotation angle periodic change rule of the stirring assembly, and the control module controls the motor to stop rotating according to the change rule so that the stirring assembly stays at the designated position. Stop the stirring leaf and can promote user experience at the assigned position, avoid stirring the leaf and hang the dish or influence and uncap, realize the positioning control of stir-fry machine stirring subassembly.
Drawings
FIG. 1 is a schematic view of a position of a stirring assembly of a stir-frying machine for stirring leaves and hanging dishes in a related art;
fig. 2 is a flowchart of a stir-frying machine stirring positioning method according to embodiment 1 of the present invention;
FIG. 3-a is a schematic diagram showing the relationship between the on-signal and off-signal intervals of the reed switch (vertically arranged) and the motion trail of the permanent magnet;
3-b is a timing diagram of the output signal of the reed switch (vertically arranged);
FIG. 3-c is a schematic diagram showing the relationship between the on-signal and off-signal intervals of the reed switch (arranged vertically) after the magnetic attenuation and the motion trail of the permanent magnet;
FIG. 4-a is a schematic diagram showing the relationship between the on-signal and off-signal intervals of the reed switch (arranged horizontally) and the motion trail of the permanent magnet;
FIG. 4-b is a timing diagram of the output signal of the reed switch (arranged horizontally);
4-c is a relationship diagram of the on signal and off signal interval of the reed switch (arranged transversely) and the motion trail of the permanent magnet;
FIG. 4-d is a schematic diagram of a reference time point of the reed switch;
fig. 5 is a schematic view of a cooker according to embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a stir-frying machine stirring positioning method, including:
step S110: the control module receives an output signal of the detection module; the detection module comprises a first component arranged on the stirring assembly and a second component arranged on the pot cover or the pot body, and the second component is used for outputting a connection or disconnection signal according to the position change between the first component and the second component;
step S120: the control module judges whether the stirring assembly is installed or not according to the output signal of the detection module; the stirring assembly comprises a transmission shaft and stirring blades, the transmission shaft is detachably connected with an output shaft of the motor, and the stirring blades are driven by the output shaft to rotate;
step S130: after the control module determines that the stirring assembly is installed, the control module determines a periodic change rule of a rotation angle of the stirring assembly according to an output signal of the detection module, and controls the motor to stop rotating according to the change rule so that the stirring assembly stays at an appointed position;
in the above embodiment, the control module detects whether the stirring assembly is installed (the transmission shaft of the stirring assembly is connected to the output shaft of the motor) through the detection module, and when the stirring assembly is installed, the control module determines a position change rule of the first component relative to the second component according to an output signal of the detection module, and since the first component is arranged on the stirring assembly and the second component is arranged on the pot cover or the pot body of the cooking machine, a position change rule of the first component relative to the second component is also a rotation angle periodic change rule of the stirring assembly, and the control module controls the motor to stop rotating according to the change rule so that the stirring assembly stays at a specified position. Stopping the stirring leaf at the assigned position can promote user experience, avoid stirring the leaf and hang the dish or influence and uncap.
In one embodiment, the first component is a permanent magnet and the second component is a magnetic inductor;
in one embodiment, the magnetic inductor is a reed switch;
in one embodiment, the first component is a bump contact structure or a mechanical transmission structure disposed on the transmission shaft, and the second component is a micro switch.
In one embodiment, the control module determines whether the stirring assembly is installed according to the output signal of the detection module, and includes:
if the control module receives the on signal and the off signal which are alternately changed and output by the detection module within a preset time period, the stirring assembly is judged to be installed;
if the control module receives that the detection module only outputs a conducting signal or only outputs a disconnecting signal within a preset time, judging that the stirring assembly is not installed;
wherein the preset time includes: one or more motor rotation cycles;
when the detection module comprises a permanent magnet and a magnetic inductor (such as a reed switch), the magnetic inductor (such as the reed switch) cannot sense a magnetic force signal when the stirring assembly is not installed, so that the magnetic inductor is in a normally open state or a normally closed state. Assuming that the magnetic inductor outputs an off signal when the stirring assembly is not installed, after the stirring assembly is installed, the permanent magnet rotates along with the rotation of the transmission shaft, when the permanent magnet is close to the magnetic inductor (such as a reed switch), the magnetic inductor senses a larger magnetic force and outputs an on signal (such as a high level signal), and when the permanent magnet is far away from the magnetic inductor, the magnetic inductor senses a smaller magnetic force and outputs an off signal (such as a low level signal). The reed switch is a non-contact switch, and has low cost and long service life.
When the detection module comprises a bump contact structure (or a mechanical transmission structure) and a microswitch, the microswitch cannot be triggered when the stirring assembly is not installed, so that the microswitch is in a normally open state or a normally closed state. If the stirring assembly is not installed, the micro switch outputs a disconnection signal, after the stirring assembly is installed, when the salient point contact structure or the mechanical transmission structure of the transmission shaft rotates to the position of the micro switch, the micro switch is triggered to output a connection signal, and when the salient point contact structure or the mechanical transmission structure of the transmission shaft rotates to the position away from the micro switch, the micro switch is triggered to output a disconnection signal. The microswitch is a mechanical contact switch, and has high reliability and low cost.
In one embodiment, determining a periodic variation law of a rotation angle of the stirring assembly according to an output signal of the detection module, and controlling a motor to stop rotating according to the variation law so that the stirring assembly stays at a specified position includes:
receiving an output signal of a detection module within a preset time, and determining a periodic variation rule of a rotation angle of the stirring assembly according to the alternating variation characteristic of the on and off of the output signal;
searching for a reference starting time t within one rotation period of the stirring assemblycFrom said reference starting instant tcAfter the timing is started for a specified time t, the motor is controlled to stop rotating so that the stirring assembly stays at a specified position;
wherein the preset time includes: one or more motor rotation cycles.
In one embodiment, the specified time period t is preset;
in one embodiment, the specified time t is a reference starting time t according to a specified position where the stirring component needs to staycAnd motor speed determination:
when the reference starting time tcWhen the position is ahead of the designated position b where the stirring component needs to stay in one period, t is [ b/(6v)]-tc；
When the reference starting time tcLagging behind the designated position b where the stirring component needs to stay in one period, t ═ b/(6v)]+(T-tc)；
Wherein b is the rotation angle of the stirring component corresponding to the specified position where the stirring component needs to stay, v is the rotation speed of the motor, the unit is (revolution/minute), T is the rotation period of the stirring component, T, T and TcThe unit of (d) is seconds.
In one embodiment of the method of the present invention,the reference starting time tcThe method comprises the following steps: the time when the on signal is switched to the off signal; or the moment when the off signal is switched to the on signal;
in one embodiment, the reference starting time tcThe method comprises the following steps: the middle time of the conducting signal interval; or the middle time of the off signal interval.
The reed of the reed pipe is likely to have magnetic attenuation along with the lapse of service time, when the reed pipe is vertically arranged, the middle moment position of a conducting signal interval or a disconnecting signal interval can be found by utilizing the symmetry of the mounting positions of the reed pipe and the permanent magnet, and the rotating angle position of the stirring assembly corresponding to the middle moment is kept unchanged before and after the magnetic attenuation. Therefore, the start time t will be referred tocThe positioning drift caused by the magnetic attenuation of the reed switch can be resisted by selecting the middle time of the on signal interval or the middle time of the off signal interval.
In one embodiment, the motor is mounted on the pot cover through a support seat, an accommodating groove is formed in the support seat, and the magnetic inductor is arranged in the accommodating groove;
in one embodiment, the magnetic inductor is a reed switch and is vertically arranged on the periphery of the transmission shaft, and the permanent magnet is embedded in the transmission shaft;
as shown in fig. 3-a, the motion track of the permanent magnet is a circle, the reed pipe is located outside the circle, the closest point from the reed pipe to the motion circle of the permanent magnet is taken as the initial position (0 degree position) of the motion circle of the permanent magnet, and when the permanent magnet is at (0 degree, a degree)1In the first rotation interval of DEG, the reed switch outputs a conduction signal (high level signal) when the permanent magnet is at (a)1°,a2In the second rotation interval of DEG, the reed switch outputs a cut-off signal (low level signal) when the permanent magnet is at (a)2In a third rotation interval of 360 degrees, the reed switch outputs a conduction signal (high level signal).
As shown in fig. 3-b, the on signal (high level signal) and the off signal (low level signal) alternately appear during one rotation period of the agitating member. If with permanent magnetismThe 0 degree position on the motion circle of the body is used as the period starting point of the output signal of the detection module, and in a timing period T, the first conduction signal interval is (0, T)1) Then the on signal is switched to an off signal, the off signal interval being (t)1,t2) Finally, the off signal is switched to the on signal, and the second on signal interval is (t)2,T)；
Thus, the first rotation interval (0 °, a) of the permanent magnet1DEG) corresponds to a first on-signal interval (0, t) of the output signal1) Second rotation interval (a) of the permanent magnet1°,a2DEG) corresponds to the off signal interval (t) of the output signal1,t2) Third rotation interval (a) of permanent magnet2Degree, 360 DEG corresponds to a second conduction signal interval (t) of the output signal2,T)。
In one embodiment, a reference time point is determined in the variation period of the output signal, and the delay time t from the time domain position of the output signal corresponding to the designated position to the reference time point is calculated; if switching from the on signal to the off signal is performed at the time point t1As a reference time point, a specified position where the stirring assembly needs to stay is assumed as a third rotation interval (a) on the circumference2And b degrees within 360 degrees, calculating the delay time t of the time-domain position of the output signal corresponding to the specified position from the reference time point, wherein t is [ b/(6v)]-t1Where v is the set rotational speed of the motor in rpm, t1,t2T, T is in seconds. And when an output signal corresponding to the reference time point is received, starting a timer and timing a period of time t, and controlling the motor to stop rotating when the timing time is up so as to enable the stirring assembly to stay at the designated position.
In other embodiments, a reference time point is determined in the variation period of the output signal, and the delay time t from the time domain position of the output signal corresponding to the designated position to the reference time point is calculated; it is also possible to switch the switch-off signal to the switch-on signal at the point in time t2As a reference time point, the designated position where the stirring assembly needs to stay is assumed to be the first rotation interval (0 DEG, a) on the circumference1B deg.) then calculating the delay time t of the time domain position of the output signal corresponding to the specified position from the reference time point, t ═ b/(6v)]+(T-t2) Where v is the set rotational speed of the motor, t1,t2T, T is in seconds. And when an output signal corresponding to the reference time point is received, starting a timer and timing a period of time t, and controlling the motor to stop rotating when the timing time is up so as to enable the stirring assembly to stay at the designated position.
As shown in fig. 3-c, the reed of the reed switch may have magnetic attenuation along with the use time, and after the magnetic attenuation, the first rotating interval (0 degrees, b degrees) of the permanent magnet1DEG) corresponds to a first on-signal interval (0, t) of the output signal1') second rotation interval (b) of the permanent magnet1°,b2DEG) corresponds to the off signal interval (t) of the output signal1',t2') third rotation interval of the permanent magnet (b)2Degree, 360 DEG corresponds to a second conduction signal interval (t) of the output signal2', T). When the reed magnetically decays, t1' with respect to t1Advanced by time Δ t, t2' with respect to t2After a time of Δ t, the off-signal interval (t) before the magnetic decay1,t2) The rotation angle alpha of the stirring assembly corresponding to the middle time position1Off signal interval (t) after magnetic decay1',t2') an angle of rotation beta of the stirring assembly corresponding to the intermediate position1The two are at the same angle and do not change. Therefore, the position of the middle time point of the off signal section is determined as the reference time point, and the positioning drift caused by the magnetic attenuation of the reed switch can be resisted.
In one embodiment, the magnetic inductor is a reed switch, the reed switch is transversely and symmetrically arranged by taking a central axis of the cross section of the transmission shaft as a symmetry axis, the reed switch is arranged above the transmission shaft, and the permanent magnet is embedded on the transmission shaft;
as shown in fig. 4-a, the motion track of the permanent magnet is a circle, the reed pipe is positioned outside the circle, and the motion track from the center of the reed pipe to the permanent magnet isThe closest point is taken as the initial position (0 degree position) of the motion circle of the permanent magnet, and when the permanent magnet is positioned at (0 degree, e degree)1In the first rotation interval, the reed switch outputs a cut-off signal (low level signal) when the permanent magnet is at (e)1°,e2In the second rotation interval of DEG, the reed switch outputs a conduction signal (high level signal) when the permanent magnet is in (e)2°,e3In the third rotation interval, the reed switch outputs a turn-off signal (low level signal) when the permanent magnet is at (e)3°,e4In the fourth rotation interval of DEG, the reed switch outputs a conduction signal (high level signal) when the permanent magnet is at (e)4In a fifth rotation range of 360 °, the reed switch outputs a turn-off signal (low level signal).
As shown in fig. 4-b, the on signal (high level signal) and the off signal (low level signal) alternately appear during one rotation period of the agitating member. If the 0 degree position on the motion circle of the permanent magnet is taken as the period starting point of the output signal of the detection module, the first off signal interval is (0, T) in one timing period T1) Then the off signal is switched to an on signal, the first on signal interval being (t)1,t2) Then the on signal is switched to the off signal, the second off signal interval is (t)2,t3) Then the off signal is switched to an on signal, the second on signal interval is (t)3,t4) Then the on signal is switched to the off signal, and the third off signal interval is (t)4,T)。
Thus, the first rotation interval (0 °, e) of the permanent magnet1DEG) corresponds to a first cut-off signal interval (0, t) of the output signal1) Second rotation interval of permanent magnet (e)1°,e2DEG) corresponds to a first on-signal interval (t) of the output signal1,t2) Third rotation interval of permanent magnet (e)2°,e3DEG) corresponds to a second cut-off signal interval (t) of the output signal2,t3) Fourth rotation interval of permanent magnet (e)3°,e4DEG) corresponding to a second on-signal interval (t) of the output signal3,t4) Fifth rotation interval of permanent magnet (e)4°,360 deg. corresponds to a third off-signal interval (t) of the output signal4,T)。
In one embodiment, a reference time point is determined in the variation period of the output signal, and the delay time t from the time domain position of the output signal corresponding to the designated position to the reference time point is calculated; if the first turn-off signal is switched to the turn-on signal at the time point t1As a reference time point, the designated position where the stirring assembly needs to stay is assumed to be a fourth rotating interval (e) on the circumference3°,e4B deg.) then calculating the delay time t of the time domain position of the output signal corresponding to the specified position from the reference time point, t ═ b/(6v)]-t1Where v is the set rotational speed of the motor, t1,t2,t3,t4T, T is in seconds. And when an output signal corresponding to the reference time point is received, starting a timer and timing a period of time t, and controlling the motor to stop rotating when the timing time is up so as to enable the stirring assembly to stay at the designated position.
In another embodiment, the first on signal may be switched to the off signal at time t2As a reference time point, or a time point t at which the second turn-off signal is switched to the on signal3As a reference time point, or a time point t of switching the second turn-on signal to the turn-off signal4As a reference time point.
In one embodiment, the conducting signal interval and the disconnecting signal interval may drift along with the magnetic attenuation of the permanent magnet, the middle point of the conducting signal interval or the disconnecting signal interval is used as a reference time point, and then the time delay t corresponding to the specified position is calculated.
As shown in figure 4-c, the reed of the reed pipe may be magnetically attenuated with the use time, and after the reeds at the two ends of the reed pipe are simultaneously magnetically attenuated, the first rotating interval (0 degrees, b degrees) of the permanent magnet1DEG) corresponds to a first cut-off signal interval (0, t) of the output signal1') second rotation interval (b) of the permanent magnet1°,b2DEG) corresponds to a first on-signal interval (t) of the output signal1',t2') third rotation interval of the permanent magnet (b)2°,b3DEG) corresponds to a second cut-off signal interval (t) of the output signal2',t3') fourth rotation interval of the permanent magnet (b)3°,b4DEG) corresponding to a second on-signal interval (t) of the output signal3',t4'), fifth rotation interval of the permanent magnet (b)4DEG, 360 DEG corresponds to a third cut-off signal interval (t) of the output signal4', T). When the reed magnetically decays, t2' with respect to t2Advanced by time Δ t, t3' with respect to t3After a time of Δ t, the second off signal interval (t) before the magnetic decay is obtained2,t3) The rotation angle alpha of the stirring assembly corresponding to the middle time position1Second off signal interval (t) after magnetic decay2',t3') an angle of rotation beta of the stirring assembly corresponding to the intermediate position1The two are at the same angle and do not change. Therefore, the position of the middle time point of the off signal section is determined as the reference time point, and the positioning drift caused by the magnetic attenuation of the reed switch can be resisted.
As shown in FIG. 4-d, to counter the positioning drift caused by the magnetic damping of the reed switch, a third rotation interval (e) of the permanent magnet can be set2°,e3Second off signal section (t) of output signal corresponding to DEG2,t3) As a reference time point tc. The position of the middle point of the disconnection signal interval is selected to eliminate the positioning error caused by the magnetic attenuation of the permanent magnet to a certain extent.
Example 2
As shown in fig. 5, an embodiment of the present invention provides a cooker, including: the stirring device comprises a stirring assembly and a motor, wherein the stirring assembly comprises a transmission shaft 11 and stirring blades, the transmission shaft 11 is detachably connected with an output shaft 21 of the motor, and the stirring blades are driven by the output shaft 21 to rotate;
the cooker also comprises a detection module and a control module; the detection module comprises a first part 31 arranged on the stirring assembly and a second part 32 arranged on the pot cover or the pot body, and the second part 32 is used for outputting a switch-on or switch-off signal according to the position change between the first part 31 and the second part 32;
the control module is used for receiving the output signal of the detection module, judging whether the stirring assembly is installed or not according to the output signal of the detection module, determining the periodic change rule of the rotation angle of the stirring assembly according to the output signal of the detection module after the stirring assembly is determined to be installed, and controlling the motor to stop according to the change rule so that the stirring assembly stops at the designated position.
In one embodiment, the first component is a permanent magnet and the second component is a magnetic inductor;
in one embodiment, the magnetic inductor is a reed switch;
in one embodiment, the first component is a bump contact structure or a mechanical transmission structure disposed on the transmission shaft, and the second component is a micro switch.
In one embodiment, the motor is mounted on the pot cover through a support seat, an accommodating groove is formed in the support seat, and the magnetic inductor is arranged in the accommodating groove;
in one embodiment, the magnetic inductor is a reed switch, the reed switch is vertically arranged on the periphery of the transmission shaft, and the permanent magnet is embedded in the transmission shaft;
in one embodiment, the magnetic inductor is a reed switch, the reed switch is transversely and symmetrically arranged by taking a central axis of the cross section of the transmission shaft as a symmetry axis, the reed switch is arranged above the transmission shaft, and the permanent magnet is embedded on the transmission shaft;
in one embodiment, the control module is used for judging whether the stirring assembly is installed or not according to the output signal of the detection module in the following way: if the control module receives the on signal and the off signal which are alternately changed and output by the detection module within a preset time period, the stirring assembly is judged to be installed; if the control module receives that the detection module only outputs a conducting signal or only outputs a disconnecting signal within a preset time, judging that the stirring assembly is not installed; wherein the preset time includes: one or more motor rotation cycles;
in one embodiment, the control module is configured to determine a periodic variation law of a rotation angle of the stirring assembly according to an output signal of the detection module, and control the motor to stop rotating according to the variation law so that the stirring assembly stays at a specified position: receiving an output signal of a detection module within a preset time, and determining a periodic variation rule of a rotation angle of the stirring assembly according to the alternating variation characteristic of the on and off of the output signal; searching for a reference starting time t within one rotation period of the stirring assemblycFrom said reference starting instant tcAfter the timing is started for a specified time t, the motor is controlled to stop rotating so that the stirring assembly stays at a specified position; wherein the preset time includes: one or more motor rotation cycles;
in one embodiment, the specified time period t is preset;
in one embodiment, the control module is further configured to refer to the starting time t according to a specified position where the stirring assembly needs to staycAnd determining the specified time period t by the motor speed:
when the reference starting time tcWhen the position is ahead of the designated position b where the stirring component needs to stay in one period, t is [ b/(6v)]-tc；
When the reference starting time tcLagging behind the designated position b where the stirring component needs to stay in one period, t ═ b/(6v)]+(T-tc)；
Wherein b is the rotation angle of the stirring component corresponding to the specified position where the stirring component needs to stay, v is the rotation speed of the motor, the unit is (revolution/minute), T is the rotation period of the stirring component, T, T and TcThe unit of (d) is seconds.
In one embodiment, the reference starting time tcThe method comprises the following steps: switching the on signal to the off signalThe time of the number; or the moment when the off signal is switched to the on signal;
in one embodiment, the reference starting time tcThe method comprises the following steps: the middle time of the conducting signal interval; or the middle time of the off signal interval.
In one embodiment, the magnetic inductor is a reed switch and is vertically arranged on the periphery of the transmission shaft, and when the permanent magnet is embedded on the transmission shaft, the closest point of the reed switch to the motion circumference of the permanent magnet is taken as the starting position (0 degree position) of the motion circumference of the permanent magnet;
first rotation interval (0 DEG, a) of the permanent magnet1Degree) corresponding to a first on-signal interval (0, t) of the reed switch output signal1) Second rotation interval (a) of the permanent magnet1°,a2Degree) corresponding to the off signal interval (t) of the reed switch output signal1,t2) Third rotation interval (a) of permanent magnet2Degree, 360 DEG corresponds to a second conduction signal interval (t) of the reed switch output signal2,T)；
In one embodiment, the reed switches are transversely and symmetrically arranged by taking a central axis of a cross section of the transmission shaft as a symmetry axis, the reed switches are arranged above the transmission shaft, the permanent magnet is embedded on the transmission shaft, and the starting position (0 degree position) of the movement circle of the permanent magnet is taken from the center of the reed switch to the closest point of the movement circle of the permanent magnet;
first rotation interval (0 DEG, e) of permanent magnet1DEG) corresponds to a first cut-off signal interval (0, t) of the output signal1) Second rotation interval of permanent magnet (e)1°,e2DEG) corresponds to a first on-signal interval (t) of the output signal1,t2) Third rotation interval of permanent magnet (e)2°,e3DEG) corresponds to a second cut-off signal interval (t) of the output signal2,t3) Fourth rotation interval of permanent magnet (e)3°,e4DEG) corresponding to a second on-signal interval (t) of the output signal3,t4) Fourth rotation interval of permanent magnet (e)4360 deg. corresponding to a third of the output signalsOff signal interval (t)4,T)。
It should be noted that the present invention can be embodied in other specific forms, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (8)

1. A stirring positioning method of a cooker is characterized by comprising the following steps:
the control module receives an output signal of the detection module; the detection module comprises a first component arranged on the stirring assembly and a second component arranged on the pot cover or the pot body, and the second component is used for outputting a connection or disconnection signal according to the position change between the first component and the second component;
the control module judges whether the stirring assembly is installed or not according to the output signal of the detection module; the stirring assembly comprises a transmission shaft and stirring blades, the transmission shaft is detachably connected with an output shaft of the motor, and the stirring blades are driven by the output shaft to rotate;
after the control module determines that the stirring assembly is installed, the control module determines a periodic change rule of a rotation angle of the stirring assembly according to an output signal of the detection module, and controls the motor to stop rotating according to the change rule so that the stirring assembly stays at an appointed position;
receiving an output signal of a detection module within a preset time, and determining a periodic variation rule of a rotation angle of the stirring assembly according to the alternating variation characteristic of the on and off of the output signal;
searching for a reference start time within a rotation period of the stirring assembly
Figure 878881DEST_PATH_IMAGE002
From the reference starting time
Figure 293682DEST_PATH_IMAGE002
Start to fixAfter the time is set for a specified time t, controlling the motor to stop rotating so as to enable the stirring assembly to stay at a specified position;
wherein the preset time includes: one or more motor rotation cycles.
2. The method of claim 1, wherein:
the reference start time
Figure 767388DEST_PATH_IMAGE002
Including any of the following: the time when the on signal is switched to the off signal; the time when the off signal is switched to the on signal; the middle time of the conducting signal interval; the middle time of the off signal interval.
3. The method of claim 2, wherein:
the specified time period t is preset.
4. The method of claim 2, wherein:
the specified duration t is the specified position where the stirring component needs to stay and the reference starting time
Figure 752793DEST_PATH_IMAGE002
And motor speed determination:
when the reference starting time
Figure 970148DEST_PATH_IMAGE002
Before a specified position b where the stirring assembly needs to stay within one period,
Figure 973876DEST_PATH_IMAGE004
；
when the reference starting time
Figure 634796DEST_PATH_IMAGE002
Lags behind said in one cycleWhen the stirring assembly needs to stay at the designated position b,
Figure 356764DEST_PATH_IMAGE006
；
wherein b is the rotation angle of the stirring component corresponding to the specified position where the stirring component needs to stay, v is the rotation speed of the motor, the unit is (revolution/minute), T is the rotation period of the stirring component, T, T and
Figure 128542DEST_PATH_IMAGE007
the unit of (d) is seconds.
5. The method of any one of claims 1-4, wherein:
the first component is a permanent magnet, and the second component is a magnetic inductor; or
The first component is a bump contact structure or a mechanical transmission structure arranged on the transmission shaft, and the second component is a microswitch.
6. The method of claim 5, wherein:
the second component is a reed switch, the reed switch is vertically arranged on the periphery of the transmission shaft, and the permanent magnet is embedded in the transmission shaft; or
The second component is a reed switch, the reed switch is transversely and symmetrically arranged by taking a central axis of the cross section of the transmission shaft as a symmetry axis, the reed switch is arranged above the transmission shaft, and the permanent magnet is embedded in the transmission shaft.
7. A cooker comprising: the stirring assembly comprises a transmission shaft and stirring blades, the transmission shaft is detachably connected with an output shaft of the motor, and the stirring blades are driven by the output shaft to rotate; the method is characterized in that:
the cooker also comprises a detection module and a control module; the detection module comprises a first component arranged on the stirring assembly and a second component arranged on the pot cover or the pot body, and the second component is used for outputting a connection or disconnection signal according to the position change between the first component and the second component;
the control module is used for receiving an output signal of the detection module, judging whether the stirring assembly is installed or not according to the output signal of the detection module, determining a periodic change rule of a rotation angle of the stirring assembly according to the output signal of the detection module after the stirring assembly is determined to be installed, and controlling the motor to stop rotating according to the change rule so as to enable the stirring assembly to stop at an appointed position;
receiving an output signal of a detection module within a preset time, and determining a periodic variation rule of a rotation angle of the stirring assembly according to the alternating variation characteristic of the on and off of the output signal; searching for a reference start time within a rotation period of the stirring assembly
Figure 986777DEST_PATH_IMAGE002
From the reference starting time
Figure 67865DEST_PATH_IMAGE002
After the timing is started for a specified time t, the motor is controlled to stop rotating so that the stirring assembly stays at a specified position; wherein the preset time includes: one or more motor rotation cycles.
8. The cooker of claim 7, wherein:
the reference start time
Figure 27862DEST_PATH_IMAGE002
Including any of the following: the time when the on signal is switched to the off signal; the time when the off signal is switched to the on signal; the middle time of the conducting signal interval; the middle time of the off signal interval.
CN201811599182.3A 2018-12-26 2018-12-26 Stirring positioning method of cooker and cooker Active CN109480607B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811599182.3A CN109480607B (en) 2018-12-26 2018-12-26 Stirring positioning method of cooker and cooker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811599182.3A CN109480607B (en) 2018-12-26 2018-12-26 Stirring positioning method of cooker and cooker

Publications (2)

Publication Number Publication Date
CN109480607A CN109480607A (en) 2019-03-19
CN109480607B true CN109480607B (en) 2021-02-02

Family

ID=65712052

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811599182.3A Active CN109480607B (en) 2018-12-26 2018-12-26 Stirring positioning method of cooker and cooker

Country Status (1)

Country Link
CN (1) CN109480607B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101994428A (en) * 2009-08-27 2011-03-30 漳州市麒麟电子有限公司 Method for controlling close of anti-theft motor lock of electric rolling door
CN205338586U (en) * 2016-01-15 2016-06-29 九阳股份有限公司 But fried dish machine of stirring leaf automatic positioning
CN205338585U (en) * 2016-01-14 2016-06-29 九阳股份有限公司 Fried dish machine of stirring subassembly can be dismantled in area
CN207163392U (en) * 2017-09-22 2018-03-30 宁波普乐菲智能科技有限公司 A kind of magnetic induction location structure for being used to detect tube-like piece docking
CN108946648A (en) * 2018-09-07 2018-12-07 深圳市奥图威尔科技有限公司 Land loading arm playback detection device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101994428A (en) * 2009-08-27 2011-03-30 漳州市麒麟电子有限公司 Method for controlling close of anti-theft motor lock of electric rolling door
CN205338585U (en) * 2016-01-14 2016-06-29 九阳股份有限公司 Fried dish machine of stirring subassembly can be dismantled in area
CN205338586U (en) * 2016-01-15 2016-06-29 九阳股份有限公司 But fried dish machine of stirring leaf automatic positioning
CN207163392U (en) * 2017-09-22 2018-03-30 宁波普乐菲智能科技有限公司 A kind of magnetic induction location structure for being used to detect tube-like piece docking
CN108946648A (en) * 2018-09-07 2018-12-07 深圳市奥图威尔科技有限公司 Land loading arm playback detection device

Also Published As

Publication number Publication date
CN109480607A (en) 2019-03-19

Similar Documents

Publication Publication Date Title
CN101990784B (en) Domestic appliance with remote control of door opening
CN203898043U (en) Cooking utensil
CN102805551B (en) Anti-overflow moisture-preserving electric cooker and cooking control method thereof
US11674690B2 (en) Knob assembly and appliance having knob assembly
US11125484B2 (en) Flexing tray ice-maker with AC drive
CN205338585U (en) Fried dish machine of stirring subassembly can be dismantled in area
CN105105626A (en) Electronic pressure cooker control method, controller and electronic pressure cooker
CN105078232B (en) Cooking apparatus and its control method
US10499459B2 (en) Cooktop appliance and temperature switch
CN109480607B (en) Stirring positioning method of cooker and cooker
CN201630978U (en) Control device for household appliance equipment
EP3364112B1 (en) Knob assembly and appliance with the knob assembly
WO2017113887A1 (en) Top-loading stir fryer
CN108420296B (en) Heating cooker, control system and method thereof
JP2012040404A (en) Cooker
US20210010677A1 (en) Sealing temperature sensor assembly for an appliance cooktop
JPH08124663A (en) Rotary cooking utensil
KR20010025379A (en) electri auto rice cooker
CN215738358U (en) Automatic cooking stove
JP2803599B2 (en) Electromagnetic induction cooker
JP2650624B2 (en) Electric rice cooker
CN113040608B (en) Liquid heater
CN113040601B (en) Operating method of household appliance
CN220735157U (en) Cooking utensil
CN210124596U (en) Cooking utensil

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant