CN104812129A - Control system and method for household electrical appliance - Google Patents

Abstract

The invention relates to the technical field of control for household appliances, and discloses a control system and method for household appliances. The household appliance includes a light emitting device. The system includes: a brightness sensor for detecting ambient brightness; a control device for The light-emitting brightness of the light-emitting device is controlled according to the brightness of the environment. The invention controls the luminous brightness of the luminous device according to the detected ambient luminance, thereby realizing the automatic adjustment of the luminous brightness of the luminous device, and preventing the user from being inconvenienced by uncoordinated luminous brightness of the luminous device.

Description

A control system and method for household appliances

technical field

The present invention relates to a control technology for household appliances, in particular to a control system and method for household appliances.

Background technique

At present, most household appliances on the market are equipped with lighting devices, such as microwave ovens and refrigerators with lighting devices installed in the chamber and display panels installed on the casing to indicate the working status to the user, water heaters with indicator lights to identify the heating status, etc. However, the luminance of these light-emitting devices cannot be adjusted, so users often cannot see the displayed content clearly or feel that the light emitted by the light-emitting devices is dazzling during use.

Contents of the invention

The object of the present invention is to provide a control system and method for household appliances to solve the problem of automatically adjusting the luminous brightness of a luminous device.

In order to achieve the above object, the present invention provides a control system for a household appliance, the household appliance includes a light emitting device, the system includes: a brightness sensor for detecting ambient brightness; a control device for and controlling the luminous brightness of the luminous device.

Preferably, the control device compares the ambient brightness with a preset brightness threshold, and controls the light-emitting brightness of the light-emitting device according to the comparison result.

Preferably, the light emitting device includes: a lighting device for illuminating; and/or a display device for displaying the working status of the household appliance.

Preferably, the system includes: a plurality of brightness sensors corresponding to the plurality of light-emitting devices respectively, and used to respectively detect a plurality of ambient brightnesses; The luminous luminance of the luminous device corresponding to the plurality of luminance sensors.

Preferably, in the case where the lighting device includes the lighting device and the display device, the system includes: two brightness sensors corresponding to the lighting device and the display device, respectively, for detecting two Ambient brightness: the control device separately controls the luminous brightness of the lighting device and the display device according to the two ambient brightness.

Correspondingly, the present invention also provides a control method for a household appliance, the household appliance including a lighting device, the method comprising: detecting ambient brightness; and controlling the lighting brightness of the lighting device according to the ambient brightness.

Preferably, the controlling the luminous brightness of the lighting device according to the ambient brightness includes: comparing the ambient brightness with a preset brightness threshold, and controlling the lighting brightness of the lighting device according to the comparison result.

Preferably, the light emitting device includes: a lighting device for lighting; and/or a display device for displaying the working status of the household appliance;

Preferably, the method includes: a plurality of brightness sensors corresponding to the plurality of light-emitting devices respectively, for respectively detecting a plurality of ambient brightnesses; The luminous luminance of the luminous device corresponding to the plurality of luminance sensors.

Preferably, when the light emitting device includes the lighting device and the display device, the method includes: two brightness sensors corresponding to the lighting device and the display device respectively, for detecting two Ambient brightness: respectively controlling the luminous brightness of the illuminating device and the display device according to the two ambient brightnesses.

Through the above technical solution, the present invention controls the luminous brightness of the luminous device according to the detected ambient luminance, so that the automatic adjustment of the luminous brightness of the luminous device is well realized, and the inconvenience caused by the incoordination of the luminous brightness of the luminous device to the user is prevented. inconvenient.

Other features and advantages of the present invention will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a structural diagram of a control system for household appliances provided by the present invention; and

FIG. 2 is a structural diagram of a specific implementation of a control system for a household appliance provided by the present invention; and

Fig. 3 is a flow chart of the control method for household appliances provided by the present invention.

Explanation of reference signs

201 Brightness sensor 202 Control device

2031 Lighting device 2032 Display device

204 power supply

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Fig. 1 is a structural diagram of a control system for a household appliance provided by the present invention. As shown in Fig. 1, the household appliance includes a light emitting device, and the system provided by the present invention includes a brightness sensor and a control device. The brightness sensor is used to detect the brightness of the environment, and the control device is used to control the brightness of the light emitting device according to the detected brightness of the environment. Thus, the luminous brightness of the luminous device can be changed with the change of the ambient brightness, so that the luminous brightness of the luminous device can be automatically adjusted according to the ambient brightness.

Wherein, after the ambient brightness is detected by the brightness sensor, the control device compares the detected ambient brightness with a preset brightness threshold, and controls the light emitting brightness of the light emitting device according to the comparison result. The preset brightness threshold described here may be one value or multiple values.

In the following, two brightness thresholds are set in advance as an example. For the convenience of description, these two brightness thresholds are respectively referred to as a first brightness threshold and a second brightness threshold, and it is assumed that the first brightness threshold is smaller than the second brightness threshold. Comparing the ambient brightness detected by the brightness sensor with the first brightness threshold and the second brightness threshold respectively, when the ambient brightness is less than the first brightness threshold, the control device controls the light emitting brightness of the light emitting device to be the first brightness, and in the environment When the brightness is greater than or equal to the first brightness threshold and less than the second brightness threshold, the control device controls the light emitting brightness of the light emitting device to be the second brightness, and when the ambient brightness is greater than the second brightness threshold, the control device controls the light emitting device to emit light The brightness is the third brightness. Here, the luminous brightness of the light emitting device can be adjusted and controlled by the PWM signal of the control device, an external dedicated PWM chip or a power switch.

Briefly, assuming that the ambient brightness is normalized to a brightness value from 0 to 100, and taking the luminance of a light emitting device as an example from 0% to 100%, the first brightness threshold can be set to 30, and the second brightness threshold to 50. When the ambient brightness is less than 30, the control device can control the luminous brightness of the luminous device to be 30%, and when the ambient luminance is greater than or equal to 30 and less than 50, the control device can control the luminous brightness of the luminous device to be 50%. In the case that the ambient brightness is greater than or equal to 50, the control device can control the luminous brightness of the luminous device to be 100%.

The light-emitting device described above may include a lighting device and/or a display device, the lighting device is a device for lighting, and the display device is used to display the working status of the household appliance (the display device here can be understood as a liquid crystal display of a household appliance, etc.) .

In the case that the light emitting device only includes the lighting device, by adjusting the light emitting brightness of the lighting device, the user can clearly see the illuminated area while saving power consumption. For example, assuming that the household appliance is a microwave oven, and the lighting device is arranged inside the cavity of the microwave oven, the user can clearly see the food in the microwave oven under any ambient brightness by adjusting the brightness of the lighting device. And in the case of low ambient brightness to achieve the effect of power saving.

In the case where the light-emitting device only includes a display device, by adjusting the luminous brightness of the display device, the user can clearly see the content displayed by the display device under any ambient brightness, because if the ambient brightness is very bright, However, the luminous brightness of the display device is relatively low, and the user cannot clearly see the content displayed on the display device.

Fig. 2 is a structural diagram of a specific implementation of a control system for a household appliance provided by the present invention, the household appliance includes a light emitting device, as shown in Fig. 2 , the system includes a brightness sensor 201 and a control device 202, as shown in Fig. 2 , the light emitting device includes a lighting device 2031 and a display device 2032 , and the power supply 204 is used to provide power for the control device 202 . Different from the above light-emitting devices that only include lighting devices or display devices, the light-emitting devices can also include lighting devices 2031 and display devices 2032 at the same time to have the functions of lighting and display at the same time. The lighting devices 2031 and display devices 2032 can also be installed in household Different parts of electrical appliances to meet the different needs of users in different parts of household appliances. For example, assuming that the household appliance is a microwave oven, the lighting device can be arranged inside the cavity of the microwave oven to illuminate the food in the cavity for the user, and the display device is arranged outside the cavity of the microwave oven for displaying the working state of the microwave oven to the user (such as , firepower, cooking time, etc.). It should be noted that the control device 202 can separately control the luminance of the lighting device 2031 and the display device 2032, that is, the luminance of the lighting device 2031 and the luminance of the display device 2032 can be different luminances, for example, When the ambient brightness is greater than or equal to 30 and less than 50, the control device may control the luminous brightness of the lighting device to 50%, and control the luminous brightness of the display device 202 to 60%. However, from another point of view, different light-emitting devices have different measurement standards for luminous brightness, so when the light-emitting device includes a plurality of different types of light-emitting devices, the brightness of the environment and the brightness of the light-emitting device can be adjusted according to specific conditions. The corresponding relationship of the light-emitting luminance of different types of light-emitting devices is set separately. For example, if the lighting device 2031 and the display device 2032 on the household appliance are set at different positions, then the ambient brightness is also different. In this case, the ambient brightness and the lighting device 2031 and The corresponding relation of the luminous brightness of the display device 2032 is used to solve this problem.

However, each user has a different placement of household appliances, and also has different requirements for the setting of the corresponding relationship between the ambient brightness and the lighting device and the display device. In order to solve this problem, the control system provided by the present invention also provides Another solution. In the case where the light-emitting device includes a lighting device and a display device, a brightness sensor can be provided respectively corresponding to the lighting device and the display device, that is to say, two brightness sensors are included to detect two ambient brightnesses respectively. The two ambient brightness levels are used to control the luminous brightness of the lighting device and the display device respectively. Specifically, the first brightness sensor corresponds to the lighting device, and the second brightness sensor corresponds to the display device. The control device controls the luminous brightness of the lighting device according to the ambient brightness detected by the first brightness sensor. The brightness of the environment detected by the brightness sensor is used to control the brightness of the display device.

It can be understood that the ambient brightness around the household appliance is different. In order to meet the different requirements for the brightness of the light emitting device at different positions of the household appliance, the control system provided by the present invention may include multiple brightness sensors. The sensors are in one-to-one correspondence with the plurality of luminous devices for respectively detecting a plurality of ambient luminances, and the control device respectively controls the luminous luminances of the luminous devices corresponding to the plurality of luminance sensors according to the detected multiple ambient luminances. That is to say, household appliances also need to have multiple light-emitting devices, and one brightness sensor corresponds to one light-emitting device (the light-emitting device may have one light-emitting device (for example, only has a lighting device or a display device), or may have multiple light-emitting devices (for example, with an illumination device and a display device)), the control device controls the light-emitting brightness of the light-emitting device corresponding to each brightness sensor according to the ambient brightness detected by each brightness sensor. Those skilled in the art should understand that the number and positions of these brightness sensors and the number and positions of the corresponding light emitting devices can be set as required.

Fig. 3 is a flow chart of a control method for a household appliance provided by the present invention, the household appliance includes a light emitting device, as shown in Fig. 3, the method includes: detecting the ambient brightness; controlling the light emitting device according to the detected ambient brightness of luminous brightness.

It should be noted that the specific details and benefits of the control method for household appliances provided by the present invention are similar to those of the control system for household appliances provided by the present invention, and will not be repeated here.

The preferred embodiment of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details of the above embodiment, within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, These simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific implementation manners may be combined in any suitable manner if there is no contradiction. In order to avoid unnecessary repetition, various possible combinations are not further described in the present invention.

In addition, various combinations of different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (10)

1. for a control system for household electrical appliance, these household electrical appliance comprise light-emitting device, it is characterized in that, this system comprises:

Luminance sensor, for testing environment brightness;

Control device, for controlling the luminosity of described light-emitting device according to described ambient brightness.

2. system according to claim 1, is characterized in that, described ambient brightness and the luminance threshold pre-set compare by described control device, control the luminosity of described light-emitting device according to comparative result.

3. system according to claim 1 and 2, is characterized in that, described light-emitting device comprises:

Lighting device, for illumination; And/or

Display unit, for showing the operating state of described household electrical appliance.

4. system according to claim 1 and 2, is characterized in that, this system comprises:

Multiple described luminance sensor, respectively with multiple described light-emitting device one_to_one corresponding, for detecting multiple ambient brightness respectively;

Described control device controls the luminosity of light-emitting device corresponding with the plurality of luminance sensor respectively respectively according to described multiple ambient brightness.

5. system according to claim 3, is characterized in that, when described light-emitting device comprises described lighting device and described display unit, this system comprises:

Two luminance sensors, correspond respectively to described lighting device and described display unit, for detecting two ambient brightnesss respectively;

Described control device controls the luminosity of described lighting device and described display unit respectively according to described two ambient brightnesss.

6. for a control method for household electrical appliance, it is characterized in that, these household electrical appliance comprise light-emitting device, and the method comprises:

Testing environment brightness;

The luminosity of described light-emitting device is controlled according to described ambient brightness.

7. method according to claim 6, is characterized in that, the described luminosity controlling described light-emitting device according to described ambient brightness comprises:

Described ambient brightness and the luminance threshold pre-set are compared, controls the luminosity of described light-emitting device according to comparative result.

8. the method according to claim 6 or 7, is characterized in that, described light-emitting device comprises:

Lighting device, for illumination; And/or

Display unit, for showing the operating state of described household electrical appliance.

9. the method according to claim 6 or 7, is characterized in that, the method comprises:

Multiple described luminance sensor, respectively with multiple described light-emitting device one_to_one corresponding, for detecting multiple ambient brightness respectively;

Described control device controls the luminosity of light-emitting device corresponding with the plurality of luminance sensor respectively respectively according to described multiple ambient brightness.

10. method according to claim 8, is characterized in that, when described light-emitting device comprises described lighting device and described display unit, the method comprises:

Two luminance sensors, correspond respectively to described lighting device and described display unit, for detecting two ambient brightnesss respectively;

The luminosity of described lighting device and described display unit is controlled respectively according to described two ambient brightnesss.