CN113676089A - Anti-pinch control method for household appliance - Google Patents
Anti-pinch control method for household appliance Download PDFInfo
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- CN113676089A CN113676089A CN202110748833.6A CN202110748833A CN113676089A CN 113676089 A CN113676089 A CN 113676089A CN 202110748833 A CN202110748833 A CN 202110748833A CN 113676089 A CN113676089 A CN 113676089A
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- turning plate
- control module
- mcu control
- driving
- drive
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000002265 prevention Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
-
- 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
- A47J36/32—Time-controlled igniting mechanisms or alarm devices
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Food Science & Technology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The invention discloses a control method for preventing hands of a household appliance from being pinched, which is characterized in that in the process of closing a turning plate, the inertia force of the turning plate is reduced by gradually reducing the voltage and the speed, then the voltage is reversely and gradually increased to carry out turning plate deceleration control so as to stop the turning plate at a position where the hands are likely to be pinched, and an alarm is given to remind a user, and after a preset time interval, the turning plate is controlled to finish closing movement so as to move the turning plate to the closing position, so that the fingers are prevented from being pinched, and the use experience of the user is effectively improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a hand-clamping prevention control method of a household appliance.
Background
Among the correlation technique, the high-end all-in-one that evaporates of majority adopts the board mechanism that turns over, will show that the operation panel upwards turns up in order to facilitate the user operation, and the current board structure that turns over generally adopts speed reduction direct current motor to drive, after user operation accomplishes, turns over the board and withdraws automatically, withdraws the in-process automatically, probably has children or user's finger to place on turning over the board closed position to lead to pressing from both sides and hinder the finger, and then influence user experience. Common control method detects after the certain distance, stops the power supply for the motor, turns over the board and leans on motor self-locking power to stop, reminds the user to prevent the tong simultaneously, but this kind of control method has certain risk, and when turning over board weight great, perhaps motor speed is too fast, when self-locking power is not enough, can't stop the upset motion of turning over the board completely to lead to the user to take place to press from both sides the condition of hindering the finger, and then influence user experience.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and provides a hand clamping prevention control method for a household appliance, which is simple and practical, and can prevent fingers from being clamped by stopping a turning plate at the front position of a closed position and alarming to remind a user in the closing process of the turning plate.
The above purpose is realized by the following technical scheme:
the anti-pinch control method of the household appliance comprises the following steps:
in the starting stage, when the turning plate receives a closing signal, the MCU control module drives the turning plate to move forward to close the turning plate;
in the speed reduction stage, the MCU control module adjusts the running speed of the motor so as to reduce the running speed of the flap motor;
in the braking stage, the MCU control module drives the turning plate to move reversely until the turning plate stops closing movement;
an alarm stage, wherein an alarm is given to remind a user;
and in the closing stage, after the preset time interval, the MCU control module drives the turning plate to move forwards to complete the closing movement of the turning plate.
In some embodiments, during the starting phase, the step of driving the turning plate to move forward by the MCU control module to close the turning plate includes:
the MCU control module controls the drive IC module to output voltage in the forward direction, and simultaneously outputs a PWM signal with the duty ratio of 100% to drive the turning plate to move in the forward direction.
In some embodiments, during the deceleration phase, the step of the MCU control module adjusting the operating speed of the motor to decrease the operating speed of the flap motor comprises:
the MCU control module reduces the duty ratio of the PWM signal, and simultaneously gradually reduces the output voltage of the drive IC module so as to gradually reduce the running speed of the flap motor.
In some embodiments, in the braking phase, the step of driving the flap to move in a reverse direction by the MCU control module until the flap stops closing movement includes:
the MCU control module controls the drive IC module to reversely output voltage, and simultaneously outputs a PWM signal and gradually increases the duty ratio from zero to drive the turning plate to reversely move;
the reverse driving force and the inertia force interact to stop the flap motor, so that the flap stops closing movement.
In some embodiments, the step of the MCU control module controlling the flap to complete a closing motion comprises:
the MCU control module controls the drive IC module to output voltage in the positive direction so as to drive the turning plate to move in the positive direction, and therefore the turning plate is closed.
In some embodiments, the preset duration of the start-up phase is 1S to 3S, the preset duration of the deceleration phase is 2S to 4S, the preset duration of the brake phase is 1S, the preset duration of the alarm phase is 2S to 3S, and the preset duration of the shutdown phase is 1S.
In some embodiments, the device further comprises a forward triode and a backward triode, wherein when the driving IC module outputs a forward voltage, a current flows through the FO pin of the driving IC, the forward triode, the flap motor and the BO pin of the driving IC in sequence to drive the flap motor to operate in a forward direction; when the driving IC module reversely outputs voltage, the current sequentially flows through a BO pin of the driving IC, the flap motor, the backward triode and an FO pin of the driving IC to drive the flap motor to reversely operate.
In some embodiments, the step of issuing an alert to alert a user comprises:
the MCU control module controls the buzzer to output signals so as to give an alarm, and therefore a user is reminded of preventing hands from being clamped.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the anti-pinch control method of the household appliance is simple and practical, and can prevent fingers from being pinched by stopping the turning plate at the front position of the closing position and giving an alarm to remind a user in the closing process of the turning plate.
Drawings
FIG. 1 is a flowchart illustrating a hand-pinching prevention control method according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a hand-pinching prevention control circuit according to an embodiment of the present invention;
FIG. 3 is a graph showing the voltage variation of the anti-pinching control circuit according to the embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the claims of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 3, the embodiment provides a household appliance's anti-pinch control method, turn over the board and close the in-process, through reducing voltage and speed step by step to reduce the inertia force of turning over the board, reverse step by step increase voltage again turns over board speed reduction control in order to stop turning over the board in the position department that probably takes place the tong easily, and report to the police and remind the user, after the interval presets for a long time, control turns over the board and accomplishes and close the motion so that turn over the board motion to closed position department, thereby prevent to press from both sides and hinder the finger, and then effectively improve user's use experience.
In the embodiment, the household appliance is a steam box, a steam oven, a micro-steam box, a micro-steam oven, a steaming and baking all-in-one machine or a dish washing machine, but not limited to the above, other more suitable steam cooking devices can be selected, of course, the household appliance in this embodiment is described by way of example as a steam box, the rest is not described again, the steam box comprises a shell, a turning plate and a turning plate motor, wherein an inner cavity with one end in an open state is defined on the shell, the shell is movably provided with a turning plate, the output end of the turning plate motor is connected with the turning plate to drive the turning plate to turn, thereby completing the opening and closing of the open end of the inner cavity, in addition, the steam box anti-pinch control circuit comprises a driving IC, a forward triode and a backward triode, when the driving IC module outputs voltage in the forward direction, current flows through an FO pin of the driving IC, a forward triode, a flap motor and a BO pin of the driving IC in sequence to drive the flap motor to operate in the forward direction; when the driving IC module outputs voltage reversely, current flows through a BO pin of the driving IC, the flap motor, the reverse triode and an FO pin of the driving IC in sequence to drive the flap motor to run reversely, in addition, when the driving IC receives a forward driving signal, an output end F0 is a positive electrode, a BO end is a negative electrode, and a forward DC12V is output, at the moment, no signal is input from a PWM control end of the reverse triode, a signal is input from a PWM control end of the forward triode, the forward triode is conducted according to the PWM signal, and the current flows through the FO pin of the driving IC, the forward triode, the flap motor and the BO pin of the driving IC to drive the flap motor to run forwards; when the driving IC receives a reverse driving signal, the output end F0 is a negative electrode, the BO end is a positive electrode, and a reverse DC12V is output, at the moment, no signal is input from the PWM control end of the forward triode, a signal is input from the PWM control end of the reverse triode, the reverse triode is conducted according to the PWM signal, and the current passes through the BO pin of the driving IC, the flap motor, the reverse triode and the FO pin of the driving IC to drive the flap motor to reversely run.
The anti-pinch control method in the embodiment specifically comprises the following steps:
and S101, in the starting stage, when the turning plate receives a closing signal, the MCU control module drives the turning plate to move forwards to close the turning plate.
In this embodiment, when the turning plate receives a closing signal, the MCU control module controls the driving IC module to output a forward voltage, and simultaneously the MCU control module outputs a PWM signal with a duty ratio of 100%, and at this time, a large voltage is provided to the turning plate motor to increase a starting torque, so as to ensure that the turning plate motor is normally started, and the turning plate motor drives the turning plate to move to a closing position to drive the turning plate to make a closing motion, in addition, the turning plate motor employs a dc12V voltage, and the turning plate motor is preferably set as a dc speed reduction motor.
And S102, in the speed reduction stage, the MCU control module adjusts the running speed of the motor to reduce the running speed of the flap motor.
In the embodiment, the MCU control module reduces the duty ratio of the PWM signal, and simultaneously gradually reduces the output voltage of the drive IC module so as to gradually reduce the running speed of the flap motor;
the MCU control module controls the drive IC module to reversely output voltage, and simultaneously outputs a PWM signal and gradually increases the duty ratio from zero;
the reverse driving force and the inertia force interact to stop the flap motor, so that the flap stops closing movement.
And step S103, in the braking stage, the MCU control module drives the turning plate to move reversely until the turning plate stops closing movement.
In this embodiment, after the turning plate starts to move forward, the input voltage of the turning plate motor is gradually reduced by adjusting the PWM duty ratio, so as to reduce the operating speed of the turning plate motor, and further reduce the inertia force of the turning plate movement, and the driving voltage of the turning plate motor is continuously reduced until the driving voltage is 0, at this time, because the turning plate is under the action of the inertia movement, the turning plate still performs the turning movement at a continuous low speed toward the closed position, and at this time, the MCU control module controls the voltage anode and the voltage cathode of the driving IC to perform the reverse start, so that the turning plate motor enters the reverse movement trend. The MCU control module outputs PWM signals and gradually increases the duty ratio from zero, at the moment, the turning plate motor continuously and gradually decelerates under the combined action of inertia force and reverse operation voltage until the reverse voltage drives the turning plate motor to be completely offset with inertia downward sliding force, so that the turning plate is completely static to stop the closing movement of the turning plate, and in addition, the voltage is gradually increased to avoid the counter electromotive force generated when the turning plate operates in the forward direction and is superposed on the reverse large voltage to cause the damage of devices.
And step S104, an alarm stage, namely sending an alarm to remind a user.
In this embodiment, the MCU control module controls the buzzer to output a signal to give an alarm, thereby reminding the user to prevent pinching.
And S105, in the closing stage, after the preset time interval, the MCU control module drives the turning plate to move forwards to complete the closing movement of the turning plate.
In this embodiment, after the preset time interval or after the completion of the alarm reminding, the MCU control module controls the driving IC module to output a forward output voltage to drive the turning plate to complete the closing motion, and controls the driving IC to start the positive and negative voltages in a reverse and forward direction, so that the turning plate motor enters a forward motion trend, the turning plate motor drives the turning plate to continue to operate in a forward direction until the turning plate abuts against the closing position to complete the closing motion of the turning plate, and then the steam box is controlled to shut down to complete the current operation.
In this embodiment, the preset duration of the start-up phase is 1S to 3S, the preset duration of the deceleration phase is 2S to 4S, the preset duration of the braking phase is 1S, the preset duration of the alarm phase is 2S to 3S, and the preset duration of the shutdown phase is 1S, by presetting the operation time of each phase, the deceleration control is performed on the position where the flap is located at a possible grip position, that is, the start-up phase of the flap motor is preferably set to 1 second, the deceleration phase is preferably set to 3 seconds, the brake phase is preferably set to 1 second, the alarm raising phase is preferably set to 3 seconds, and the shutdown phase is preferably set to 1 second, so that the circuit is turned to the reverse triode to generate a reverse current, thereby weakening the rebound force of the flap reset to prevent hands from being pinched.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The anti-pinch control method of the household appliance is characterized by comprising the following steps:
in the starting stage, when the turning plate receives a closing signal, the MCU control module drives the turning plate to move forward to close the turning plate;
in the speed reduction stage, the MCU control module adjusts the running speed of the motor so as to reduce the running speed of the flap motor;
in the braking stage, the MCU control module drives the turning plate to move reversely until the turning plate stops closing movement;
an alarm stage, wherein an alarm is given to remind a user;
and in the closing stage, after the preset time interval, the MCU control module drives the turning plate to move forwards to complete the closing movement of the turning plate.
2. The anti-pinch control method of the household appliance according to claim 1, wherein in the starting stage, the step of driving the turning plate to move forward by the MCU control module so as to close the turning plate comprises the following steps:
the MCU control module controls the drive IC module to output voltage in the forward direction, and simultaneously outputs a PWM signal with the duty ratio of 100% to drive the turning plate to move in the forward direction.
3. The anti-pinch control method of the household appliance according to claim 2, wherein in the deceleration stage, the step of adjusting the operation speed of the motor by the MCU control module to reduce the operation speed of the flap motor comprises:
the MCU control module reduces the duty ratio of the PWM signal, and simultaneously gradually reduces the output voltage of the drive IC module so as to gradually reduce the running speed of the flap motor.
4. The anti-pinch control method of the household appliance according to claim 3, wherein in the braking stage, the step of driving the turning plate to move in the reverse direction by the MCU control module until the turning plate stops closing movement comprises the following steps:
the MCU control module controls the drive IC module to reversely output voltage, and simultaneously outputs a PWM signal and gradually increases the duty ratio from zero to drive the turning plate to reversely move;
the reverse driving force and the inertia force interact to stop the flap motor, so that the flap stops closing movement.
5. The anti-pinch control method of the household appliance according to claim 4, wherein the step of controlling the turning plate to complete the closing movement by the MCU control module comprises the following steps:
the MCU control module controls the drive IC module to output voltage in the positive direction so as to drive the turning plate to move in the positive direction, and therefore the turning plate is closed.
6. The household appliance hand-clamping prevention control method as claimed in claim 1, wherein the preset time duration of the start-up phase is 1S to 3S, the preset time duration of the deceleration phase is 2S to 4S, the preset time duration of the brake phase is 1S, the preset time duration of the alarm phase is 2S to 3S, and the preset time duration of the shutdown phase is 1S.
7. The hand-clamping prevention control method for the household appliance is characterized by further comprising a forward triode and a backward triode, wherein when a driving IC module outputs a voltage in a forward direction, current flows through an FO pin of the driving IC, the forward triode, the flap motor and a BO pin of the driving IC in sequence to drive the flap motor to operate in the forward direction; when the driving IC module reversely outputs voltage, the current sequentially flows through a BO pin of the driving IC, the flap motor, the backward triode and an FO pin of the driving IC to drive the flap motor to reversely operate.
8. The anti-pinch control method for the household appliance according to any one of claims 1 to 6, wherein the step of giving an alarm to remind a user comprises:
the MCU control module controls the buzzer to output signals so as to give an alarm, and therefore a user is reminded of preventing hands from being clamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748833.6A CN113676089A (en) | 2021-07-02 | 2021-07-02 | Anti-pinch control method for household appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748833.6A CN113676089A (en) | 2021-07-02 | 2021-07-02 | Anti-pinch control method for household appliance |
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| CN113676089A true CN113676089A (en) | 2021-11-19 |
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| CN202110748833.6A Pending CN113676089A (en) | 2021-07-02 | 2021-07-02 | Anti-pinch control method for household appliance |
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| US20180183363A1 (en) * | 2016-12-28 | 2018-06-28 | Mabuchi Motor Co., Ltd. | Control device and method for controlling the same |
| CN111206838A (en) * | 2020-02-26 | 2020-05-29 | 马瑞利汽车电子(广州)有限公司 | Ripple anti-pinch position compensation method and device |
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2021
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065426A (en) * | 2012-11-26 | 2013-04-24 | 苏州佳世达电通有限公司 | Displayer with hand-clamping resistant and early-warning functions |
| CN203129887U (en) * | 2013-02-05 | 2013-08-14 | 郑州精益达汽车零部件有限公司高新区分公司 | Pneumatic upward moving cabin door of ultra-long type passenger car |
| CN106156665A (en) * | 2016-08-01 | 2016-11-23 | 长沙锐博特科技有限公司 | A kind of cover protecting device and method |
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| CN206944272U (en) * | 2017-06-27 | 2018-01-30 | 中山市通快电气有限公司 | A kind of drive device of the accurate control of the water conservancy diversion turnover panel of range hood |
| CN207059189U (en) * | 2017-07-19 | 2018-03-02 | 郑州聚成电气技术有限公司 | Extruding and towing machine speed adjusting device |
| CN108065893A (en) * | 2017-12-28 | 2018-05-25 | 宁波欧琳厨具有限公司 | A kind of water basin dish-washing machine drive gate control circuit |
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