CN110529887A - Electromagnetic oven and control method thereof - Google Patents

Abstract

The invention discloses a control method of an induction cooker, which comprises the following steps: starting a cooking mode on the induction cooker, wherein the induction cooker emits a wave source signal with fixed frequency and receives a feedback signal, and whether a human body moves in a detection area or not is judged according to the comparison between the frequency corresponding to the feedback signal and the fixed frequency so as to control the induction cooker to maintain a normal working state or stop working. By the control method of the induction cooker, the safety is better guaranteed, and the phenomenon that a user leaves the working induction cooker for too long time to be burnt or cause a fire accident is avoided.

Description

Electromagnetic cooker and control method thereof

technical field

The invention relates to the field of household appliances, in particular to an electromagnetic cooker and a control method thereof.

Background technique

Induction cooker, also known as induction cooker, is the product of the modern kitchen revolution. It does not need open flame or conduction heating to generate heat directly at the bottom of the pot, so the thermal efficiency has been greatly improved. It is a kind of high-efficiency and energy-saving kitchen utensils, which is completely different from all traditional fire or non-fire conduction heating kitchen utensils.

However, when people use the induction cooker, they may go away temporarily and forget to turn off the induction cooker. If the user cannot come back in time, the dishes being cooked on the induction cooker may be burnt, and may even cause the induction cooker to catch fire, which is dangerous; or forget to turn it off Induction cooker, causing the induction cooker to work for a long time will cause the induction cooker to catch fire and cause danger.

Therefore, those skilled in the art are devoting themselves to developing an induction cooker and a control method thereof that prevent the user from leaving the working induction cooker for too long to cause burns or fire accidents.

Contents of the invention

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an induction cooker and its control method that prevent the user from leaving the working induction cooker for too long to cause burns or fire accidents.

In order to achieve the above object, the present invention provides a control method for an induction cooker, comprising the following steps:

Turn on the power switch, select the cooking mode, the electromagnetic oven emits a wave source signal with a fixed frequency and receives a feedback signal, and judges whether there is human body movement in the detection area by comparing the frequency corresponding to the feedback signal with the fixed frequency To control the electromagnetic oven to maintain a normal working state or stop working.

Preferably, the cooking mode is a stir-frying mode or a stir-frying mode or a frying mode or a grilling mode.

Preferably, the fixed frequency is 2.5GHZ-5GHZ.

Preferably, when turning on the cooking mode on the induction cooker, the following steps are included:

The user selects a cooking mode by clicking a touch button or a button on the induction cooker or by voice, and at the same time emits a wave source signal with a fixed frequency.

Preferably, when the frequency corresponding to the feedback signal is greater than the fixed frequency, then maintain the normal working state of the induction cooker; when the frequency corresponding to the feedback signal is equal to the fixed frequency, delay the first preset time. After setting a time period, check again, if the frequency corresponding to the feedback signal is equal to the fixed frequency, then control the induction cooker to stop working; if the frequency corresponding to the feedback signal is greater than the fixed frequency, then maintain the normal working state of the induction cooker.

Preferably, the induction cooker emits a warning sound within the first preset time period.

Preferably, the detection area is within the range of 0.5m-10m from the center of the induction cooker.

The present invention also provides an induction cooker, comprising:

The cooking mode selection module selects the cooking mode according to the needs of the user;

The power switch unit is used to make the induction cooker enter the standby state or stop working;

The human body detection module includes a wave source for emitting a pulse wave with a fixed frequency around, a transmitting unit for emitting the wave source, a receiving unit for receiving a feedback signal, and a frequency for comparing the frequency corresponding to the feedback signal with the fixed frequency Frequency analysis modules of size between;

A control module, used to control the induction cooker to maintain a normal working state or stop working;

The cooking mode selection module, the power switch unit and the human detection module are all connected to the control module.

Preferably, the cooking mode is a stir-frying mode or a stir-frying mode or a frying mode or a grilling mode.

Preferably, when the frequency corresponding to the feedback signal is greater than the fixed frequency, the control module maintains the normal working state of the induction cooker; when the frequency corresponding to the feedback signal is equal to the fixed frequency, delay After the first preset time period, detect again, if the frequency corresponding to the feedback signal is equal to the fixed frequency, then the control module disconnects the power switch unit so that the induction cooker stops working; if the frequency corresponding to the feedback signal is greater than If the frequency is fixed, the control module maintains the normal working state of the induction cooker.

The beneficial effects of the present invention are: the control method of the electromagnetic oven of the present invention requires someone to operate and monitor all the time in the cooking mode, stir-frying mode or frying mode, otherwise it will burn or burn, or even cause fire hazards. The cooking mode is controlled by the above method, and it is more intelligent and safe, which can effectively prevent the user from leaving the working induction cooker for a long time and cause burnt pot or fire accidents; at the same time, an alarm unit is set to remind the user to return to the induction cooker in time to perform corresponding operations to avoid burnt pot or fire accidents.

Description of drawings

Fig. 1 is a schematic structural view of an electromagnetic oven according to a specific embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

The embodiment of the present invention discloses a method for controlling an electromagnetic oven, which includes the following steps:

Turn on the power switch, select the cooking mode, the electromagnetic oven emits a wave source signal with a fixed frequency and receives a feedback signal, and judges whether there is human body movement in the detection area by comparing the frequency corresponding to the feedback signal with the fixed frequency To control the electromagnetic oven to maintain a normal working state or stop working.

The cooking mode is a stir-frying mode or a stir-frying mode or a frying mode or a grilling mode.

The fixed frequency is 2.5GHZ-5GHZ.

When switching on cooking mode on an induction hob, the following steps are involved:

The user selects a cooking mode by clicking a touch button or a button on the induction cooker or by voice, and at the same time emits a wave source signal with a fixed frequency.

When the frequency corresponding to the feedback signal is greater than the fixed frequency, maintain the normal working state of the induction cooker; when the frequency corresponding to the feedback signal is equal to the fixed frequency, delay the first preset time period , detect again, if the frequency corresponding to the feedback signal is equal to the fixed frequency, then control the induction cooker to stop working; if the frequency corresponding to the feedback signal is greater than the fixed frequency, then maintain the normal working state of the induction cooker.

The induction cooker emits a warning sound within the first preset time period.

The detection area is within the range of 0.5m-10m from the center of the induction cooker.

The induction cooker emits a warning sound within the first preset time period to prompt the user to return in time. The first preset time period is 5s-30s, and different cooking modes can correspond to different times. For example, in the stir-frying mode or stir-fry mode, the first preset time period can be 5s; The set time period can be 1min; in the frying mode, the first preset time period can be 30s. In other implementations, the first preset time period can also be comprehensively set according to different cooking modes according to the corresponding firepower.

The control method of the induction cooker is realized through relevant structural modules of the induction cooker. As shown in Figure 1, an induction cooker includes:

Cooking mode selection module 1, selects the cooking mode according to user needs;

The power switch unit 2 is used to make the induction cooker enter the standby state or stop working;

The human body detection module 3 includes a wave source 33 for transmitting a pulse wave with a fixed frequency to the surroundings, a transmitting unit 31 for transmitting the wave source 33, a receiving unit 32 for receiving a feedback signal, and a corresponding signal for comparing the feedback signal. The frequency analysis module 34 of the size between the frequency and the fixed frequency;

The control module 4 is used to control the induction cooker to maintain a normal working state or stop working;

The cooking mode selection module 1 , the power switch unit 2 and the human detection module 3 are all connected to the control module 4 .

The human body detection module 3 is a Doppler radar.

When the frequency corresponding to the feedback signal is greater than the fixed frequency, the control module 4 maintains the normal working state of the induction cooker; when the frequency corresponding to the feedback signal is equal to the fixed frequency, delay the first After a preset period of time, detect again, if the frequency corresponding to the feedback signal is equal to the fixed frequency, then the control module 4 disconnects the power switch unit 2 to stop the induction cooker; if the frequency corresponding to the feedback signal is greater than the fixed frequency If the frequency is fixed, the control module 4 maintains the normal working state of the induction cooker.

The control module 4 includes a first preset time unit 41 , and the first preset time period is set within the first preset time unit 41 .

The induction cooker also includes an alarm unit 5, and the alarm unit 5 is connected to the control module 4 to control the alarm unit 5 to issue an alarm within the first preset time period set by the first preset unit 41. sound.

Turn on the power switch, the induction cooker enters the standby mode, and select the cooking mode. If the selection is, for example, the cooking mode or the stir-frying mode or the frying mode or the grilling mode, the control module sends out the execution of the corresponding cooking mode and at the same time starts the human detection module. Fixed frequency wave source, and receive the feedback signal, detect the frequency corresponding to the feedback signal and the size of the natural frequency, to determine whether someone is moving within the detection range, and then determine whether the person is on the scene, if the frequency corresponding to the feedback signal is greater than the natural frequency Frequency, which means that someone is on site and the position of the induction cooker is in normal working condition; if the frequency corresponding to the feedback signal is equal to the natural frequency, test again, if the frequency corresponding to the feedback signal is equal to the natural frequency, it means that the person is not on site for a long time, control the power switch Close and stop working; if the frequency corresponding to the feedback signal is greater than the natural frequency, it means that someone is on site and the induction cooker is in normal working condition.

In the control method of the electromagnetic oven of the present invention, because the cooking mode, the stir-frying mode or the frying mode need to be operated and monitored by someone all the time, otherwise it will burn or burn, or even cause fire and other dangers. The above-mentioned cooking mode is controlled by the above-mentioned method, And it is more intelligent and safe, which can effectively prevent the user from leaving the working induction cooker for a long time and cause a burnt pot or fire accident; at the same time, an alarm unit is set to remind the user to return to the induction cooker in time to perform corresponding operations to avoid burnt pot or fire accidents.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (10)

1. a kind of electromagnetic oven control method, it is characterized in that: the following steps are included:

Power switch to be opened, culinary art mode is selected, electromagnetic oven transmitting has the wave source signal of fixed frequency and receives feedback signal, Determine whether have in detection zone according to size is compared corresponding to the feedback signal between frequency and the fixed frequency Human motion is to control the electromagnetic oven maintenance normal operating conditions or stop working.

2. electromagnetic oven control method as described in claim 1, it is characterized in that: the culinary art mode is cooking mode or quick-fried mould Formula or French style or barbecue mode.

3. electromagnetic oven control method as described in claim 1, it is characterized in that: the fixed frequency is 2.5GHZ-5GHZ.

4. electromagnetic oven control method as described in claim 1, it is characterized in that: when opening the culinary art mode on electromagnetic oven, packet Include following steps:

User cooks mode by the membrane keyboard or key on the click electromagnetic oven or by voice selecting, while transmitting has The wave source signal of fixed frequency.

5. the electromagnetic oven control method as described in Claims 1-4 is any, it is characterized in that: working as corresponding to the feedback signal When frequency is greater than the fixed frequency, then the electromagnetic oven normal operating conditions is maintained；The frequency corresponding to the feedback signal When rate is equal to the fixed frequency, after being spaced the first preset time period, detect again, if frequency corresponding to feedback signal is equal to The fixed frequency then controls the electromagnetic oven and stops working；If frequency corresponding to feedback signal is greater than the fixed frequency, Then maintain electromagnetic oven normal operating conditions.

6. electromagnetic oven control method as claimed in claim 5, it is characterized in that: the electromagnetism in first preset time period Furnace issues caution sound.

7. electromagnetic oven control method as described in claim 1, it is characterized in that: the detection zone be apart from electromagnetic oven center away from From within the scope of 0.5m-10m.

8. a kind of electromagnetic oven, it is characterized in that: including:

It cooks mode selection module (1), is needed to select culinary art mode according to user；

Power switch unit (2), for making electromagnetic oven enter standby mode or stopping working；

Human detection module (3), including for emitting the impulse wave with fixed frequency around wave source (33), for emitting The transmitting unit (31) of the wave source (33), the receiving unit (32) for receiving feedback signal and for comparing feedback signal institute The frequency analysis module (34) of size between corresponding frequency and fixed frequency；

Control module (4), for controlling the electromagnetic oven maintenance normal operating conditions or stopping working；

The culinary art mode selection module (1), the power switch unit (2) and the human detection module (3) with it is described Control module (4) connection.

9. electromagnetic oven as claimed in claim 8, it is characterized in that: the culinary art mode is cooking mode or quick-fried mode or frying Mode or barbecue mode.

10. electromagnetic oven as claimed in claim 8 or 9, it is characterized in that: working as frequency corresponding to the feedback signal greater than described When fixed frequency, then the control module (4) maintains the electromagnetic oven normal operating conditions；Corresponding to the feedback signal When frequency is equal to the fixed frequency, after first preset time period that is delayed, detect again, if frequency corresponding to feedback signal etc. In the fixed frequency, then control module (4) the disconnecting power switch unit (2) makes the electromagnetic oven stop working；If Frequency corresponding to feedback signal is greater than the fixed frequency, then the control module (4) maintains electromagnetic oven normal operating conditions.