CN110811287A - Anti-rotation-blockage control system of grain quantifying mechanism, electric cooker and anti-rotation-blockage control method - Google Patents
Anti-rotation-blockage control system of grain quantifying mechanism, electric cooker and anti-rotation-blockage control method Download PDFInfo
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- CN110811287A CN110811287A CN201810909594.6A CN201810909594A CN110811287A CN 110811287 A CN110811287 A CN 110811287A CN 201810909594 A CN201810909594 A CN 201810909594A CN 110811287 A CN110811287 A CN 110811287A
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- 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
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- 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
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- 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
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- 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
- A47J47/00—Kitchen containers, stands or the like, not provided for in other groups of this subclass; Cutting-boards, e.g. for bread
- A47J47/01—Kitchen containers, stands or the like, not provided for in other groups of this subclass; Cutting-boards, e.g. for bread with dispensing devices
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- 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
- A47J47/00—Kitchen containers, stands or the like, not provided for in other groups of this subclass; Cutting-boards, e.g. for bread
- A47J47/02—Closed containers for foodstuffs
- A47J47/04—Closed containers for foodstuffs for granulated foodstuffs
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
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Abstract
The invention relates to an anti-rotation-blockage control system of a grain quantifying mechanism, an electric cooker and an anti-rotation-blockage control method. Above-mentioned stifled control system that changes is prevented to cereal ration mechanism includes: locked rotor detection device and controlling means. The locked rotor detection device is electrically connected with the control device and is used for being electrically connected with a driving device of the grain quantifying mechanism, detecting the running condition of the driving device and outputting a detection signal to the control device; the control device is electrically connected with the driving device and used for judging whether the grain quantifying mechanism is in locked-rotor abnormity or not according to the detection signal; when the grain quantifying mechanism is in locked-rotor abnormality, the control device generates a locked-rotor recovery signal and sends the locked-rotor recovery signal to the driving device; the locked-rotor recovery signal is used for indicating the driving device to drive the component impeller of the grain quantifying mechanism to rotate reversely, and abnormal locked-rotor is recovered. Under the condition of no manual intervention, the locked rotor abnormality of the grain quantifying mechanism is automatically recovered, so that the stability of the grain quantifying mechanism is better, and the working efficiency is higher.
Description
Technical Field
The invention relates to the field of household appliance control, in particular to an anti-rotation-blockage control system of a grain quantifying mechanism, an electric cooker and an anti-rotation-blockage control method.
Background
The electric cooker is a household appliance commonly used by residents, and is often used for cooking grains such as rice, millet, mung beans, red beans and the like. The conventional rice cooker needs to manually measure the weight of grains before cooking the grains and add the measured grains into the pot. In order to solve this problem, the prior art has designed a grain box, a grain quantifying mechanism and a conveying mechanism on the electric cooker. The grain box is used for storing grains, a first opening is formed in the grain box, and grains in the grain box can enter the grain quantifying mechanism through the first opening. The grain quantitative mechanism is used for quantitatively distributing grains entering the grain quantitative mechanism and conveying the grains subjected to quantitative distribution to the conveying mechanism one by one. The grains which are quantitatively distributed by the grain quantifying mechanism are conveyed into the electric rice cooker pot body one by one through the conveying mechanism. A general grain quantifying mechanism is matched with a base through a component impeller, a plurality of quantifying grooves with upper and lower openings are formed between blades of the component impeller, and the component impeller can rotate on the base. The base is provided with a second opening. Cereal falls into the quantitative groove of component impeller from the cereal case, and the component impeller rotates, and when the quantitative check that the loading has cereal rotated the second opening on the base, cereal fallen into conveying mechanism.
In the implementation process, the inventor finds that at least the following problems are stored in the prior art: when the quantitative groove is about to completely rotate through the second opening on the base, the edges of the blades and the second outlet can be blocked, so that the quantitative impeller is blocked and can be recovered only by manual intervention. Therefore, the grain quantifying mechanism in the prior art cannot automatically eliminate the abnormal locked rotor, the working stability is poor, and the working efficiency is lower.
Disclosure of Invention
Therefore, it is necessary to provide an anti-rotation-blockage control system for a grain quantifying mechanism, an electric rice cooker and an anti-rotation-blockage control method, which are used for solving the problems that the conventional grain quantifying mechanism cannot automatically eliminate rotation blockage abnormality, is poor in working stability and low in working efficiency.
In one aspect, an embodiment of the present invention provides a system for controlling a rotation lock of a grain dosing mechanism, including: a locked-rotor detection device and a control device,
the locked rotor detection device is electrically connected with the control device and is used for being electrically connected with a driving device of the grain quantifying mechanism, detecting the running condition of the driving device and outputting a detection signal to the control device;
the control device is electrically connected with the driving device and used for judging whether the grain quantifying mechanism is in locked-rotor abnormity or not according to the detection signal; when the grain quantifying mechanism is in locked-rotor abnormality, the control device generates a locked-rotor recovery signal and sends the locked-rotor recovery signal to the driving device; the locked-rotor recovery signal is used for indicating the driving device to drive the component impeller of the grain quantifying mechanism to rotate reversely, and abnormal locked-rotor is recovered.
In one embodiment, the locked rotor detection device comprises a current detection module, and the current detection module is used for detecting the output current of the driving device.
In one embodiment, the control device is further used for calculating the grain quantifying duration according to the total weight of the grains, the accommodating weight of the quantifying grooves of the component impellers, the number of the quantifying grooves and the forward rotation speed of the component impellers; the control device generates a grain quantitative signal according to the grain quantitative duration and the component impeller forward rotation speed, and sends the grain quantitative signal to the driving device; the grain quantitative signal is used for indicating the driving device to drive the component impeller to rotate positively so as to complete the grain quantitative task.
On the other hand, an embodiment of the present invention further provides an electric rice cooker, including a pot body, a grain box, a grain quantifying mechanism and a conveying mechanism, wherein the grain quantifying mechanism is configured to quantitatively distribute grains input from the grain box, output the quantitatively distributed grains to the conveying mechanism one by one, and convey the quantitatively distributed grains into the pot body one by one, and the electric rice cooker further includes: the anti-rotation-blockage control system of the grain quantifying mechanism.
In another aspect, an embodiment of the present invention further provides a method for controlling anti-stalling of a grain dosing mechanism, including:
receiving a detection signal indicating the operation condition of a driving device of the grain quantifying mechanism;
judging whether the grain quantifying mechanism is in locked-rotor abnormality or not according to the detection signal;
when the grain quantifying mechanism is in locked-rotor abnormality, a locked-rotor recovery signal is generated and sent to the driving device, and the locked-rotor recovery signal is used for indicating the driving device to drive the component impeller of the grain quantifying mechanism to rotate reversely to recover the locked-rotor abnormality.
In one embodiment, the detection signal comprises a current detection signal indicating the magnitude of the output current of the driving device;
according to the detection signal, the process of judging whether the grain quantifying mechanism has the abnormal locked rotor comprises the following steps:
identifying the current detection signal to obtain the output current of the driving device;
and when the output current of the driving device is greater than the locked-rotor current threshold value, judging that the locked-rotor abnormality occurs in the grain quantifying mechanism.
In one embodiment, the step of receiving the detection signal further comprises:
calculating the grain quantitative duration according to the total weight of the grains, the accommodating weight of the quantitative grooves of the component impellers, the number of the quantitative grooves and the forward rotation speed of the component impellers;
according to the grain quantitative duration and the component impeller forward rotation speed, grain quantitative signals are generated and sent to the driving device, and the grain quantitative signals are used for indicating the driving device to drive the component impeller to rotate forward, so that a grain quantitative task is completed.
In one embodiment, the process of generating the locked rotor recovery signal comprises:
acquiring a reversion recovery duration and a reversion recovery speed;
and generating a recovery inversion signal according to the recovery inversion time length and the recovery inversion speed.
In one embodiment, after the grain quantifying task is completed, the method further comprises the following steps:
obtaining the total locked rotor compensation time according to the total locked rotor times and the single locked rotor compensation time;
and generating a quantitative compensation signal according to the total locked rotor compensation duration and the component impeller forward rotation speed, and sending the quantitative compensation signal to the driving device.
In one embodiment, before the step of obtaining the total locked rotor compensation duration according to the total locked rotor number and the single locked rotor compensation duration, the method further includes:
obtaining the number of single locked-rotor compensation turns according to the reversion recovery duration and the reversion recovery speed;
and obtaining the length of the single locked-rotor compensation time according to the number of the single locked-rotor compensation turns and the forward rotation speed of the component impeller.
According to the anti-stalling control system of the grain quantifying mechanism, the running state of the driving device of the grain quantifying mechanism is detected through the stalling detection device, the detection signal is output to the control device, the control device judges whether the stalling abnormality occurs in the grain quantifying mechanism or not through recognizing the detection signal, and when the stalling abnormality occurs, a stalling recovery signal is sent to the driving device, so that the component impeller of the grain quantifying mechanism is reversely rotated to recover the abnormality. Based on this, through the running state of real-time detection cereal ration mechanism's drive arrangement, in time discover whether stifled commentaries on classics of cereal ration mechanism to control drive arrangement and drive the reversal of weight impeller and resume unusually when stifled commentaries on classics, under the condition of no manual intervention, automatic recovery stifled commentaries on classics is unusual, makes cereal ration mechanism's stability better, and work efficiency is higher.
Drawings
FIG. 1 is a cross-sectional view of a typical grain dosing mechanism;
FIG. 2 is a block diagram of an anti-stalling control system of a grain dosing mechanism in one embodiment;
FIG. 3 is a schematic flow chart of a method for controlling the anti-stalling of the grain dosing mechanism according to an embodiment;
FIG. 4 is a schematic view of a method for controlling the anti-stalling of the grain dosing mechanism in another embodiment;
FIG. 5 is a schematic view of a method for controlling the anti-stalling of the grain dosing mechanism in another embodiment;
FIG. 6 is a schematic flow chart illustrating the step of generating a locked rotor recovery signal according to one embodiment;
FIG. 7 is a schematic flow chart of a method for controlling the anti-stalling of the grain dosing mechanism in another embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The anti-rotation-blockage control system of the grain quantifying mechanism provided by the invention can be applied to the grain quantifying mechanism shown in figure 1. Cereal ration mechanism includes: a component impeller 110, a base 120, and a drive 130. A plurality of quantitative grooves opened up and down are formed between the blades of the component impeller 110, and the plurality of quantitative grooves are used for quantitatively distributing the grains. The component impeller 110 is rotatably disposed on the base 120, and the base 120 is provided with a second opening. The driving device 130 is connected to the component impeller 110 and drives the component impeller 110 to rotate. When the grain quantifying mechanism works, grains enter the quantifying groove from the first opening of the grain box; the driving device 130 drives the component impeller 110 to rotate; when the quantitative trough carrying the grains rotates to be communicated with the second opening of the base 120, the grains in the quantitative trough enter the conveying mechanism through the second opening and are conveyed into the pot body through the conveying mechanism.
When the grain quantifying mechanism is locked, the material is blocked between the blades of the component impeller 110 and the second opening of the base 120, and at this time, the driving device 130 still normally applies force to drive the component impeller 110 to rotate, but because the component impeller 110 is locked and does not rotate, electrical abnormality also occurs in the driving device 130.
To solve these problems, as shown in fig. 2, an embodiment of the present invention provides an anti-stalling control system for a grain dosing mechanism, including: locked-rotor detecting means 210 and control means 220.
The locked-rotor detection device 210 is electrically connected with the control device 220, is used for electrically connecting the driving device 130 of the grain quantifying mechanism, detects the running condition of the driving device 130, and outputs a detection signal to the control device 220;
the control device 220 is electrically connected with the driving device 130, and judges whether the grain quantifying mechanism has abnormal locked rotor according to the detection signal; when the grain quantifying mechanism has the locked-rotor abnormality, the control device 220 generates a locked-rotor recovery signal and sends the locked-rotor recovery signal to the driving device 130; the locked-rotor recovery signal is used for indicating the driving device 130 to drive the component impeller 110 of the grain quantifying mechanism to rotate reversely, so that the locked-rotor abnormality is recovered.
Specifically, the input end of the locked-rotor detecting device 210 is electrically connected to the driving device 130 of the grain quantifying mechanism, and the output end of the locked-rotor detecting device 210 is electrically connected to the control device 220. The locked-rotor detecting device 210 detects the operation of the driving device 130, and reflects the operation of the driving device 130 to the control device 220 via a detection signal. The control device 220 identifies the detection signal to obtain data reflecting the operation condition of the driving device 130, determines whether the grain quantifying mechanism sends a locked-rotor abnormality according to the data, generates and sends a locked-rotor recovery signal to the driving device 130 when the locked-rotor abnormality is sent, and controls the driving device 130 to drive the component impeller 110 to rotate reversely to recover the abnormality.
The stifled control system that changes is prevented to cereal ration mechanism that this embodiment provided, through the running state of real-time detection cereal ration mechanism's drive arrangement 130, in time discover whether stifled the commentaries on classics of cereal ration mechanism to control drive arrangement 130 and drive the reversal of weight impeller 110 and resume unusually when stifled changeing, under the condition of no human intervention, automatic recovery stifled commentaries on classics is unusual, makes cereal ration mechanism's stability better, and work efficiency is higher.
In one embodiment, the locked rotor detecting device 210 includes a current detecting module for detecting the output current of the driving device 130.
Specifically, the input end of the current detection module is electrically connected to the output end of the driving device 130, and the output end of the current detection module is electrically connected to the control device 220. The current detecting module detects the output current of the driving device 130 and outputs a current detecting signal to the control device 220. The current detection signal may be an analog signal or a digital signal. In one embodiment, the current detection signal represents the magnitude of the output current of the driving device 130 in the form of a voltage, and the control device 220 identifies the output current of the driving device 130 by performing analog-to-digital conversion on the current detection signal.
In one embodiment, the control device 220 is a single chip, an ARM processor, or an FPGA.
In one embodiment, the control device 220 is further configured to calculate a grain quantifying duration according to the total weight of the grains, the quantifying groove accommodating weight of the component impeller 110, the quantifying groove number, and the component impeller forward rotation speed; the control device 220 generates a grain quantitative signal according to the grain quantitative duration and the component impeller forward rotation speed, and sends the grain quantitative signal to the driving device 130; the grain quantitative signal is used for indicating the driving device 130 to drive the component impeller 110 to rotate forward, so as to complete the grain quantitative task.
Wherein, cereal total weight is this total weight of cereal that needs the ration, is the predetermined amount, can be set up by the user before cereal ration mechanism operation. The number of quantitative grooves is the total number of quantitative grooves on the component impeller 110, and is a preset value. The quantitative trough holding weight is the weight of grains held when one quantitative trough is filled, and is also a preset value. The quantitative groove holds weight and has preset different values according to different cereal types, and the cereal type needs the setting of electric rice cooker user before cereal ration mechanism operation. The forward rotation speed of the component impeller is also a preset value and the unit is rotation per second. The grain quantifying time is the time for which the component impeller 110 needs to rotate forward in the grain quantifying process.
Specifically, according to the quotient of the total weight of the grains and the containing weight of the quantitative grooves, grains which need to be quantified totally are obtained, then according to the number of the quantitative grooves, the number of turns of the component impeller 110 which need to rotate together is calculated, and finally according to the number of turns and the forward rotation speed of the component impeller, the quantitative duration of the grains is obtained. For example, assuming that the grains to be metered by the grain metering mechanism are rice, the total weight of the grains is 1000 g, the number of metering grooves is 4, and for the rice, the metering grooves hold a weight of 20 g, and the preset component impeller normal rotation speed is 0.1 revolutions per second. Dividing 1000 g by 20 g to obtain 50 quantitative grooves which need to be quantified in total, dividing 50 by 4 to obtain 12.5 circles which need to rotate the impeller 110 forwards in total, and dividing 12.5 circles by 0.1 circle per second to obtain the cereal quantifying time length of 125 seconds.
In one embodiment, the grain quantification signal is a pulsed electrical signal for a duration of the grain quantification, the frequency of the pulsed electrical signal being indicative of the component impeller forward rotation speed.
In one embodiment, the drive device 130 includes a drive motor.
The embodiment of the invention also provides an electric cooker which comprises a cooker body, a grain box, a grain quantifying mechanism, a conveying mechanism and the anti-rotation-blockage control system of the grain quantifying mechanism.
The grain quantitative mechanism is used for quantitatively distributing the grains input by the grain box, outputting the grains subjected to quantitative distribution to the conveying mechanism one by one, and the conveying mechanism sends the grains subjected to quantitative distribution into the pot body one by one. The anti-rotation-blockage control system of the grain quantifying mechanism controls the grain quantifying mechanism to quantify grains, detects the operation condition of the driving device 130 of the grain quantifying mechanism in real time, and controls the driving device 130 to drive the component impeller 110 to rotate reversely to recover abnormal rotation blockage when abnormal rotation blockage occurs in the grain quantifying mechanism.
As shown in fig. 3, an embodiment of the present invention further provides an anti-rotation-blockage control method for a grain dosing mechanism, which may be implemented in the control device 220, and the method includes:
step S330, receiving a detection signal indicating the operation condition of the driving device 130 of the grain quantifying mechanism;
step S340, judging whether the grain quantifying mechanism has abnormal locked rotor according to the detection signal;
and step S350, when the grain quantifying mechanism is in locked-rotor abnormality, generating a locked-rotor recovery signal, and sending the locked-rotor recovery signal to the driving device, wherein the locked-rotor recovery signal is used for indicating the driving device to drive a component impeller of the grain quantifying mechanism to rotate reversely, so that the locked-rotor abnormality is recovered.
Specifically, on the control device 220 side, a detection signal reflecting the operation of the grain dosing mechanism driving device 130 is received, and the detection signal may be output from the lock detection device 210 through the detection driving device 130. The control unit 220 recognizes the detection signal and determines the operation of the driving unit 130 based on the recognized data. When the stalling abnormality occurs in the driving device 130, the blockage between the blades of the component impeller 110 and the second opening edge of the base 120 is indicated. Therefore, according to the operation condition of the driving device 130, whether the locked-rotor abnormality occurs in the grain quantifying mechanism can be judged. When the grain quantifying mechanism has the abnormal locked-rotor state, the locked-rotor recovery signal is sent, and the driving device 130 is controlled to drive the component impeller 110 to rotate reversely, so that grains clamped between the blades of the component impeller 110 and the edge of the second opening of the base 120 fall off, and the abnormal locked-rotor state is recovered. Under the condition of no manual intervention, the locked rotor abnormality is automatically recovered, so that the stability of the grain quantifying mechanism is better, and the working efficiency is higher.
In one embodiment, as shown in fig. 4, the detection signal includes a current detection signal indicating a magnitude of an output current of the driving device.
According to the detection signal, the process of judging whether the grain quantifying mechanism has the abnormal locked rotor comprises the following steps:
step S341, recognizing the current detection signal to obtain an output current of the driving device;
in step S342, when the output current of the driving device is greater than the locked-rotor current threshold, it is determined that the locked-rotor abnormality occurs in the grain quantifying unit.
Specifically, the locked-rotor current threshold is a preset parameter. When the component impeller 110 is locked, the driving device 130 still drives the component impeller 110 with normal force, and at this time, the driving voltage of the driving device 130 is not changed, but the output current of the driving device 130 is increased due to the locked impeller. Therefore, the output current of the driving device 130 is compared with the locked-rotor current threshold value, and when the output current of the driving device 130 is greater than the locked-rotor current threshold value, it is determined that the locked-rotor abnormality occurs in the grain quantifying mechanism; when the output current of the driving device 130 is smaller than the locked-rotor current threshold value, the grain quantifying mechanism is judged to be normally operated.
In one embodiment, as shown in fig. 5, before the step of receiving the detection signal, the method further includes:
step S310, calculating grain quantitative duration according to the total weight of grains, the accommodating weight of the quantitative grooves of the component impellers, the number of the quantitative grooves and the forward rotation speed of the component impellers;
and step S320, generating a grain quantitative signal according to the grain quantitative duration and the component impeller forward rotation speed, and sending the grain quantitative signal to the driving device, wherein the grain quantitative signal is used for indicating the driving device to drive the component impeller to rotate forward, so that a grain quantitative task is completed.
It should be noted that the total weight of the grains, the accommodating weight of the quantitative trough, the number of the quantitative troughs, the forward rotation speed of the component impeller, the grain quantitative time, the meaning of the grain quantitative signal, and the specific calculation process of the grain quantitative time are the same as those of the embodiment of the anti-stalling control system of the grain quantitative mechanism, and are not described herein again.
In one embodiment, as shown in fig. 6, the process of generating the locked rotor recovery signal includes:
step S351, acquiring the reversal recovery time length and the reversal recovery speed;
in step S352, a recovery inversion signal is generated according to the recovery inversion time length and the recovery inversion speed.
Wherein, the reversion recovery duration and the reversion recovery speed are preset parameters.
In practice, the inventor found that after the stall abnormality occurs, the component impeller 110 is reversely rotated to recover the stall abnormality, because the reverse rotation is performed, after the stall abnormality is recovered, the component impeller 110 continues to rotate forward, the component impeller 110 which has previously rotated in the reverse direction passes through the second opening of the base 120 again, but at this time, no grain is in the quantitative groove of the component impeller 110. Therefore, if the previously calculated grain quantifying time period is also used as the total time period for the forward rotation of the component impeller 110, the final quantified grain amount is less than the preset total grain weight.
In one embodiment, as shown in fig. 7, after the grain quantifying task is completed, the method further includes:
step S380, obtaining the total locked rotor compensation time according to the total locked rotor times and the single locked rotor compensation time;
and step 390, generating a quantitative compensation signal according to the total locked rotor compensation duration and the component impeller forward rotation speed, and sending the quantitative compensation signal to the driving device.
The total locked-rotor frequency is the total number of abnormal locked-rotor frequency occurring during the period of executing the quantitative task by the driving device 130. The single locked rotor compensation time length is the forward rotation time length that the locked rotor needs to be compensated once, and it can be understood that the component impeller 110 rotates forward from the reverse rotation stop position where the reverse rotation is recovered to the position where the locked rotor abnormality occurs. The quantitative compensation signal is used for indicating the driving device 130 to drive the component impeller 110 to rotate forward, and compensating the weight of the grains which is abnormally reduced due to the recovery of locked rotation during the grain quantitative task. The single locked-rotor compensation duration may be a preset time period parameter, or may be calculated before step S380.
Specifically, the number of times of occurrence of the stalling anomaly, i.e., the total number of stalls, is recorded during the driving device 130 completes the quantitative task. And multiplying the total locked rotor frequency by the single locked rotor compensation time to obtain the total locked rotor compensation time, and generating a quantitative compensation signal according to the total locked rotor compensation time and the component impeller forward rotation speed. For example, assuming that the grains to be metered by the grain metering mechanism are rice, the total weight of the grains is 1000 g, the number of metering grooves is 4, and for the rice, the metering grooves hold a weight of 20 g, and the preset component impeller normal rotation speed is 0.1 revolutions per second. During the execution of the quantitative task by the driving device 130, the total number of locked rotor is 8, and the compensation time of single locked rotor is 2 seconds. Then, the total locked rotor compensation time period is 16 seconds. The rice quantification of 1000 g is completed, the forward rotation time of the component impeller 110 is 141 seconds in total, namely the cereal quantification time is 125 seconds plus the total locked-rotor compensation time is 16 seconds.
In one embodiment, before the step of obtaining the total locked rotor compensation duration according to the total locked rotor number and the single locked rotor compensation duration, the method further includes:
s360, obtaining the number of single locked-rotor compensation turns according to the reversion recovery duration and the reversion recovery speed;
and step S370, obtaining the single locked-rotor compensation duration according to the number of single locked-rotor compensation turns and the component impeller forward rotation speed.
Specifically, for example, the time period for returning to the reverse rotation is 2 seconds, the speed for returning to the reverse rotation is 0.2 revolutions per second, and the speed for rotating the component impeller in the forward direction is 0.1 revolutions per second. The calculation process can be that the time length of restoring reverse rotation is 2 seconds and the speed of restoring reverse rotation is 0.2 revolutions per second, so that the number of single locked-rotor compensation turns is 0.4, and the time length of single locked-rotor compensation is 4 seconds by dividing 0.4 turns by the component impeller forward rotation speed of 0.1 revolutions per second.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a cereal dosing mechanism prevents stifled control system that changes which characterized in that includes: a locked-rotor detection device and a control device,
the locked-rotor detection device is electrically connected with the control device and is used for being electrically connected with a driving device of the grain quantifying mechanism, detecting the running condition of the driving device and outputting a detection signal to the control device;
the control device is electrically connected with the driving device and used for judging whether the grain quantifying mechanism is in locked-rotor abnormality or not according to the detection signal; when the grain quantifying mechanism is in locked-rotor abnormality, the control device generates a locked-rotor recovery signal and sends the locked-rotor recovery signal to the driving device; the locked-rotor recovery signal is used for indicating the driving device to drive the component impeller of the grain quantifying mechanism to rotate reversely, and abnormal locked-rotor is recovered.
2. The anti-stalling control system of claim 1, wherein the stalling detection device comprises a current detection module, and the current detection module is used for detecting the output current of the driving device.
3. The anti-stalling control system of the grain quantifying mechanism according to claim 2, wherein the control device is further configured to calculate grain quantifying duration according to the total weight of the grains, the quantifying groove accommodating weight of the component impeller, the quantifying groove number and the component impeller forward rotation speed; the control device generates a grain quantitative signal according to the grain quantitative duration and the component impeller forward rotation speed, and sends the grain quantitative signal to the driving device; the grain quantitative signal is used for indicating the driving device to drive the component impeller to rotate positively to complete a grain quantitative task.
4. The utility model provides an electric rice cooker, includes the pot body, cereal case, cereal quantitative mechanism and conveying mechanism, cereal quantitative mechanism be used for to by the cereal of cereal case input carries out the ration, after the ration cereal divide by parts output extremely conveying mechanism, conveying mechanism sends into the cereal after the ration divides by parts into in the pot body, its characterized in that still includes: the anti-spin control system of any of claims 1 to 3.
5. An anti-rotation-blockage control method for a grain quantifying mechanism is characterized by comprising the following steps:
receiving a detection signal indicating an operation condition of a driving device of the grain quantifying mechanism;
judging whether the grain quantifying mechanism is in locked-rotor abnormality or not according to the detection signal;
when the grain quantifying mechanism is abnormal in locked rotor, a locked rotor recovery signal is generated and sent to the driving device, and the locked rotor recovery signal is used for indicating the driving device to drive the component impeller of the grain quantifying mechanism to rotate reversely to recover the abnormal locked rotor.
6. The anti-stalling control method of the grain dosing mechanism according to claim 5, wherein the detection signal comprises a current detection signal, and the current detection signal indicates the magnitude of the output current of the driving device;
the process of judging whether the grain quantifying mechanism is in locked-rotor abnormity or not according to the detection signal comprises the following steps:
identifying the current detection signal to obtain the output current of the driving device;
and when the output current of the driving device is larger than the locked-rotor current threshold value, judging that the locked-rotor abnormality occurs in the grain quantifying mechanism.
7. The anti-stalling control method of claim 6, wherein the step of receiving the detection signal is preceded by the step of:
calculating the grain quantitative duration according to the total weight of the grains, the accommodating weight of the quantitative grooves of the component impellers, the number of the quantitative grooves and the forward rotation speed of the component impellers;
and generating a grain quantitative signal according to the grain quantitative duration and the component impeller positive rotation speed, and sending the grain quantitative signal to the driving device, wherein the grain quantitative signal is used for indicating the driving device to drive the component impeller to rotate positively to complete a grain quantitative task.
8. The method of any of claims 5 to 7, wherein the generating of the stall recovery signal comprises:
acquiring a reversion recovery duration and a reversion recovery speed;
and generating the recovery inversion signal according to the recovery inversion time length and the recovery inversion speed.
9. The anti-stalling control method of claim 8, wherein after the grain dosing task is completed, the method further comprises:
obtaining the total locked rotor compensation time according to the total locked rotor times and the single locked rotor compensation time;
and generating a quantitative compensation signal according to the total locked rotor compensation duration and the component impeller forward rotation speed, and sending the quantitative compensation signal to the driving device.
10. The anti-stalling control method for the grain dosing mechanism according to claim 9, wherein before the step of obtaining the total stalling compensation duration according to the total stalling times and the single stalling compensation duration, the method further comprises:
obtaining the number of single locked-rotor compensation turns according to the reversion recovery duration and the reversion recovery speed;
and obtaining the single locked-rotor compensation duration according to the number of the single locked-rotor compensation turns and the forward rotation speed of the component impeller.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810909594.6A CN110811287B (en) | 2018-08-10 | 2018-08-10 | Anti-rotation-blockage control system of grain quantifying mechanism, electric cooker and anti-rotation-blockage control method |
| PCT/CN2019/099964 WO2020030101A1 (en) | 2018-08-10 | 2019-08-09 | Grain quantificational mechanism rotation-clogging prevention control system, electric cooker, and rotation-clogging prevention control method |
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| CN201810909594.6A CN110811287B (en) | 2018-08-10 | 2018-08-10 | Anti-rotation-blockage control system of grain quantifying mechanism, electric cooker and anti-rotation-blockage control method |
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| CN110811287B (en) | 2021-02-09 |
| WO2020030101A1 (en) | 2020-02-13 |
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