CN106535437A - Brightness adjusting method and device and intelligent desk lamp - Google Patents

Abstract

The present application discloses a method for adjusting brightness according to user preference, including: adjusting the brightness according to the preset brightness adjustment curve according to the obtained ambient light intensity; if the user adjusts the brightness again, recording the final brightness parameter adjusted by the user, wherein, If the brightness parameter adjusted by the user exceeds the preset automatic brightness adjustment range, record the value closest to the user-adjusted brightness within the automatic brightness adjustment range as the final brightness parameter; generate a new brightness according to the final brightness parameter fitting Adjust the curve. It can be seen that the method disclosed in this application can update the brightness adjustment curve according to the user's habit of adjusting the brightness in actual use, so as to better match the user's habit, thereby significantly improving the user's customer experience. The present application also discloses a device for adjusting brightness according to user preference and an intelligent desk lamp including the device, which have the same technical effect as the above method.

Description

A method and device for adjusting brightness, and an intelligent desk lamp

technical field

The invention relates to the technical field of lighting, in particular to a method and device for adjusting brightness and an intelligent desk lamp.

Background technique

Desk lamp is one of the necessary electrical appliances at home. When people write or read on their desks, they generally use desk lamps to provide sufficient light. However, with the advancement of technology, traditional desk lamps can no longer meet people's needs. Smart desk lamps that can automatically adjust brightness have appeared on the market. However, most of the smart desk lamps on the market obtain the brightness of the environment through photoresistors, so as to automatically adjust the brightness of the desk lamp. However, the function of automatically adjusting the brightness in the prior art only adjusts the brightness according to the ambient light, and the user can only passively accept the brightness adjustment effect, and the user experience is not good.

To sum up, how to improve the user experience of the automatic brightness adjustment function of the lighting device is a technical problem to be solved by those skilled in the art at present.

Contents of the invention

In view of this, the object of the present invention is to provide a method and device for adjusting brightness, and an intelligent desk lamp, which can adjust the brightness according to the user's personal preference, thereby significantly improving user experience. The specific plan is as follows:

A method for adjusting brightness disclosed by the present invention includes:

Adjust the brightness according to the preset brightness adjustment curve according to the obtained ambient light intensity;

If the user re-adjusts the brightness, then record the final brightness parameter adjusted by the user, wherein, if the brightness parameter adjusted by the user exceeds the preset automatic brightness adjustment range, then the automatic brightness adjustment range and the user-adjusted The closest value of the brightness of is recorded as the final brightness parameter;

A new brightness adjustment curve is generated by fitting according to the final brightness parameters.

Preferably, generating a new brightness adjustment curve according to the final brightness parameter fitting includes:

Responding the final brightness parameter to the coordinate system to obtain a corresponding brightness fixed point;

Adjusting a preset brightness adjustment curve according to the fixed point of brightness, if the sum of the squares of the distances from the adjusted curve to the fixed point of brightness is a minimum value, then the curve is a new brightness adjustment curve.

Preferably, the method for adjusting brightness also includes:

The brightness of the lighting device is adjusted according to the distance between the user and the lighting device, wherein the distance is positively correlated with the brightness of the lighting device.

Preferably, if the distance between the user and the lighting device is less than a preset value, a corresponding sitting posture correction reminder is issued.

The invention also discloses a device for adjusting brightness, which includes a photosensitive sensor for obtaining the intensity of ambient light, a controller for adjusting brightness, and for recording the final brightness parameter adjusted by the user and fitting and generating the brightness parameter according to the final brightness parameter. A control chip for a new brightness adjustment curve, wherein, if the brightness parameter adjusted by the user exceeds the preset automatic brightness adjustment range, the control chip will set the brightness within the automatic adjustment range closest to the brightness adjusted by the user. The value of is recorded as the final brightness parameter.

Preferably, the control chip includes:

A brightness fixed-point acquisition unit, configured to reflect the final brightness parameter to the coordinate system to obtain a corresponding brightness fixed point;

A brightness adjustment curve fitting unit, configured to adjust a preset brightness adjustment curve according to the fixed point of brightness, and if the sum of the squares of the distances from the adjusted curve to the fixed point of brightness is the minimum value, then the curve is a new brightness adjustment curve .

Preferably, the brightness adjustment device further includes:

The distance sensor is used to obtain the distance between the user and the lighting device, wherein the distance is positively correlated with the brightness of the lighting device.

Preferably, the brightness adjustment device further includes:

The loudspeaker module is used to issue a corresponding sitting posture correction reminder when the distance between the user and the lighting device is less than a preset value.

The present invention also discloses an intelligent desk lamp, which includes the device for adjusting brightness described in any one of the above items.

Preferably, the controller is an LCD touch screen.

Preferably, the smart desk lamp also includes a WiFi networking device for connecting to a network.

A method for adjusting brightness disclosed by the present invention includes: adjusting the brightness according to the preset brightness adjustment curve according to the acquired ambient light intensity; if the user adjusts the brightness again, recording the final brightness parameter adjusted by the user, wherein, if the user adjusts If the brightness parameter exceeds the preset automatic brightness adjustment range, the value closest to the user-adjusted brightness within the automatic brightness adjustment range is recorded as the final brightness parameter; a new brightness adjustment curve is generated according to the final brightness parameter fitting. It can be seen that the method disclosed in the present invention can update the brightness adjustment curve according to the user's habit of adjusting the brightness in actual use, so as to better match the user's habit, thereby significantly improving the user's customer experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a schematic flowchart of a method for adjusting brightness disclosed in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a fitting effect of a specific brightness adjustment method disclosed in an embodiment of the present invention for function fitting;

Fig. 3 is a block diagram of a system for adjusting brightness disclosed by an embodiment of the present invention

Fig. 4 is a flow chart of a specific intelligent desk lamp operating under sitting posture correction disclosed by the embodiment of the present invention;

Fig. 5 is a flow chart of a specific intelligent desk lamp operating in the learning mode disclosed by the embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

A brightness adjustment method disclosed in the present invention can adjust the brightness according to the user's personal preferences, thereby significantly improving the user experience, as shown in Figure 1, including:

Step S1: adjust the brightness according to the preset brightness adjustment curve according to the acquired ambient light intensity;

Step S2: If the user re-adjusts the brightness, record the final brightness parameter adjusted by the user, wherein, if the brightness parameter adjusted by the user exceeds the preset automatic brightness adjustment range, compare the brightness automatic adjustment range with the user-adjusted brightness parameter. The closest value of brightness is recorded as the final brightness parameter;

Step S3: Fitting and generating a new brightness adjustment curve according to the final brightness parameters.

This method is mainly used in the field of lighting technology. In order to enable those skilled in the art to better understand this method, the implementation of the lighting device to which this method is applied is described below:

The lighting device is equipped with a sensor that can obtain the intensity of ambient light, and feeds back the obtained ambient light intensity to the lighting device. The lighting device adjusts the light intensity by adjusting the voltage of the bulb according to the preset brightness adjustment curve before leaving the factory. Since everyone's eyes are sensitive to The light intensity perception effect is roughly the same, so the light intensity adjusted according to the preset adjustment curve can be suitable for most users. But in fact, everyone has their own preference for light intensity when they are working or reading. Therefore, after the user readjusts the brightness according to his personal preference, the lighting device records the final brightness parameter adjusted by the user, and adjusts the brightness according to the final brightness parameter. Fit the function to obtain a new function closest to the final brightness parameter, and use the new function as a new brightness adjustment curve. It can be seen that after applying the method disclosed in the present invention, the lighting device can update the brightness adjustment curve according to the user's habit of adjusting brightness in actual use, so as to better match the user's habit, thereby significantly improving the customer experience of the user.

The above scheme can be further optimized. In another implementation scheme, when the user needs the desk lamp to provide lighting for the entire room, the desk lamp will be adjusted very brightly. If the fitting update is performed according to the final brightness parameter at this time, it will be cause large errors. In order to reduce errors in such lighting situations, after the lighting device adjusts the brightness according to the brightness adjustment curve, an automatic brightness adjustment range is generated according to the automatically adjusted brightness of the desk lamp. If the user manually adjusts the final brightness of the desk lamp beyond the automatic brightness adjustment range, then Only the value closest to the final brightness within the brightness automatic adjustment range is recorded, not the actual lamp brightness parameters. Certainly, the brightness automatic adjustment range may be a preset fixed range, or may be a dynamic range associated with real-time lighting brightness.

This takes into account that people have different perceptions of brightness, but the difference will not be very large, so setting a value range for adjusting the brightness according to the brightness of the desk lamp can eliminate many unnecessary errors. In addition, if the user is dissatisfied with the brightness of the desk lamp, it has indeed exceeded the value range of the brightness of the desk lamp at the beginning, and can also approach the brightness required by the user through record analysis time after time, ensuring the intelligence of the desk lamp.

It can be understood that the method for obtaining the intensity of ambient light includes the use of electronic devices that output corresponding electrical signals when subjected to different light intensities, such as photosensitive resistors and photosensitive sensors.

In the embodiment of the present invention, the method for generating a new brightness adjustment curve according to the final brightness parameter fitting is realized by calculating the error relationship between the fitting function (that is, the new brightness adjustment curve) and the final brightness parameter value, which includes setting The sum of the absolute values of the errors is the minimum value to obtain the fitting function; the sum of the nth power of the errors is the minimum value to obtain the fitting function (n is a positive integer greater than 1); taking the error vector, make The sum of the absolute values of the error vectors is the maximum value to find the fitting function.

Step S3 can be refined, wherein, according to the above-mentioned final brightness parameter fitting to generate a new brightness adjustment curve specifically includes:

Step S31: Respond the above-mentioned final brightness parameters to the coordinate system to obtain corresponding brightness fixed points;

Step S32: Adjust the preset brightness adjustment curve according to the brightness fixed point. If the sum of the squares of the distances from the adjusted curve to the brightness fixed point is the minimum value, then the curve is a new brightness adjustment curve.

In order for those skilled in the art to have a better understanding of generating a new brightness adjustment curve according to the final brightness parameter fitting, the present invention provides a specific implementation solution, as shown in FIG. 2 , the x-axis of the coordinate system corresponds to the ambient light intensity, The y-axis of the coordinate system corresponds to the brightness. The specific process of function fitting above is: the control chip records m final brightness parameters, where m is a positive integer, and reflects the final brightness parameters to the coordinate system to obtain the corresponding brightness fixed point ( x _i , y _i ), (i=0,1,2...,m); function fitting is carried out according to the above-mentioned brightness fixed point; if the sum of the squares of the distances from the fitted curve to the above-mentioned brightness fixed point is the minimum value, which is

which is Then the curve y=p(x) is a new brightness adjustment curve.

In another embodiment of function fitting, the function fitting is performed by adjusting the preset brightness adjustment curve, if the sum of the squares of the distances from the adjusted curve to the brightness fixed point is the minimum value, then the curve is a new brightness adjustment curve. In addition, a new brightness adjustment curve can also be obtained in the following ways: reflect the final brightness parameter to the coordinate system to obtain the corresponding brightness fixed point; perform function fitting according to the brightness fixed point, if the fitting curve is to the above brightness fixed point If the distance is the minimum value, then this curve is a new brightness adjustment curve.

In actual reading, the user gets closer to the lighting device to obtain a better lighting effect, so in order to further improve the user experience, the above method is optimized, specifically including: obtaining the distance between the user and the lighting device, and increasing the light source accordingly The output voltage to adjust the brightness, wherein the distance is positively correlated with the brightness of the lighting device. It can be understood that the distance between the user and the lighting device can be obtained by distance measurement using an ultrasonic sensor or an infrared sensor.

The present invention also discloses a device for adjusting brightness, as shown in FIG. 3 , which includes a photosensitive sensor 11 for obtaining ambient light intensity, a controller 12 for adjusting brightness, and recording the final brightness parameter adjusted by the user. The above-mentioned final brightness parameter fits the control chip 13 that generates a new brightness adjustment curve, wherein, if the brightness parameter adjusted by the user exceeds the preset automatic brightness adjustment range, the control chip will automatically adjust the brightness within the range with the brightness adjusted by the user. The closest value is recorded as the final brightness parameter. The device has the same technical effect as the above method, which will not be repeated here.

The above device can be further refined, wherein the control chip includes: a brightness fixed-point acquisition unit, which is used to reflect the above-mentioned final brightness parameters on the coordinate system to obtain a corresponding brightness fixed point; a brightness adjustment curve fitting unit, which is used to Brightness fixed point, adjust the preset brightness adjustment curve, if the sum of the squares of the distances from the adjusted curve to the brightness fixed point is the minimum value, then the curve is a new brightness adjustment curve. Wherein, the fitting process of the brightness adjustment curve fitting unit is the same as the above-mentioned method of obtaining the fitting curve, which can be realized by corresponding integration, square and other circuits, control chips or software operations. When using a control chip to implement, it can use a Cortem M series chip, or other chips that have or exceed the computing capability of the chip.

In actual reading, the user obtains a better lighting effect by approaching the lighting device. Therefore, in order to further improve the user experience, the above device is optimized and a distance sensor is added. After the distance sensor acquires the distance between the user and the lighting device, the brightness adjusting device increases the output voltage of the light source accordingly to adjust the brightness according to the distance, wherein the distance is positively correlated with the brightness of the lighting device. It can be understood that the distance sensor includes an ultrasonic sensor and an infrared sensor.

The present invention also discloses an intelligent desk lamp, comprising any one of the above-mentioned devices for adjusting brightness.

In a specific embodiment of a smart desk lamp, the main body of the smart desk lamp is composed of a lampshade, a light bulb and a lamp holder. The ambient light intensity is fed back to the control chip of the smart desk lamp, and the control chip adjusts the light according to the preset brightness adjustment curve. Since everyone's eyes perceive the light intensity in the same way, the preset adjustment curve can adapt to most users. The above are the general functions of smart desk lamps in the prior art, but in fact, everyone has their own preference for light intensity when they are working or reading. Therefore, the embodiment of the present invention further improves the process of adjusting the brightness of smart desk lamps. The improvements are as follows:

In the actual use of the user, after the intelligent desk lamp adjusts the brightness according to the preset brightness adjustment curve according to the ambient light parameters obtained by the photosensitive sensor, if the user re-adjusts the brightness of the intelligent desk lamp through the controller on the lamp holder, that is, the control knob, The control chip records the final brightness parameters of the smart desk lamp, and performs function fitting according to the final brightness parameters to obtain a new function closest to the final brightness parameters, and uses the new function as a new brightness adjustment curve. It can be seen that the intelligent desk lamp disclosed in the embodiment of the present invention updates the brightness adjustment curve according to the user's habit of adjusting brightness in actual use, so that the intelligent desk lamp disclosed in the embodiment of the present invention can learn the user's habit and better match the user's habit. Thereby significantly improving the user's customer experience.

It can be understood that the photosensitive sensor can be arranged on the lampshade without affecting the sensing of ambient light. At this time, in order to obtain a better sensing effect, the probe of the photosensitive sensor should be outside the lampshade.

In other inventive embodiments, the controller on the lamp base is an LCD touch screen. Through the LCD touch screen console light, the experience of human-computer interaction can be improved. At the same time, the LCD touch screen is set on the base of the smart desk lamp. Compared with the traditional control knob or button, it is not only more beautiful, but also can make the base smaller and less occupied. At the same time, the LCD touch screen can also display the date, time and other content.

The above-mentioned embodiment can be further improved, and a speaker for reminding, an infrared sensor for sensing the human body, and an ultrasonic sensor for sensing the distance between the human body and the above-mentioned intelligent desk lamp can be set on the smart desk lamp.

As shown in Figure 4, the smart desk lamp uses the ultrasonic sensor to calibrate the user's sitting posture in advance in the sitting posture correction mode. In addition, when the user makes an action that causes a sudden change in distance, such as standing up or bending over to pick up a pen, there will be no reminder to return to the original correct sitting position within the preset time. If the infrared sensor cannot sense the user, it will automatically stop the posture correction mode.

As shown in Figure 5, in the working mode of the smart desk lamp, the study time range, the duration of each study and the rest time can be set. The smart desk lamp emits a voice through the speaker at the corresponding time to remind the user to rest and study. When the rest time is up, the smart desk lamp will be automatically dimmed to save energy. If the user does not leave the desk during the rest time, the smart desk lamp will continuously remind the user to leave the desk for activities within a certain period of time. If the user does not start or continue to work when the learning time starts or the rest time ends, the desk lamp will give continuous voice prompts within a certain period of time. Whether the user is at the table can be sensed through the infrared sensor and the ultrasonic sensor, so as to judge whether the user is in the learning state.

In another embodiment, in order to further improve the user experience, the smart desk lamp is also equipped with a WiFi networking device for connecting to the network and a corresponding mobile phone APP, and the memorandum function can be realized through the mobile phone APP or LCD touch screen input. There are two ways to mention the memo, one is to be reminded at the corresponding time through the speaker, and the other is to scroll and play the content of the memo on the LCD screen when the corresponding date or time arrives in the standby state.

The desk lamp can be set to be in a standby state, that is, when the LCD touch screen is not touched, the current date and time are displayed on the LCD screen, and the brightness of the screen changes with the brightness of the surrounding environment.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The method and device for adjusting brightness provided by the present invention, the device and the smart desk lamp have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for helping understanding The method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation of the invention.

Claims (10)

1. it is a kind of adjust brightness method, it is characterised in that include：

According to the ambient light intensity for obtaining, brightness is adjusted by predetermined luminance adjustment curve；

If user readjusts brightness, the final luminance parameter that the user is adjusted is recorded, wherein, if what the user was adjusted Luminance parameter exceed default brightness adjust automatically scope, then by the range of the brightness adjust automatically with the user adjust The immediate value of brightness is recorded as final luminance parameter；

New brightness regulation curve is generated according to the final luminance parameter fitting.

2. the method for adjusting brightness according to claim 1, it is characterised in that according to the final luminance parameter fitting life The brightness regulation curve of Cheng Xin includes：

The final luminance parameter is reacted to coordinate system, corresponding brightness fixed point is obtained；

Pinpointed according to the brightness, adjust predetermined luminance adjustment curve, if the distance that the curve after adjustment is pinpointed to the brightness Quadratic sum be minima, then the curve is new brightness regulation curve.

3. it is according to claim 2 adjust brightness method, it is characterised in that also include：

The brightness of the illuminator is adjusted according to the distance of the user and illuminator, wherein, the distance and the photograph The brightness of bright device is proportionate.

4. it is according to claim 3 adjust brightness method, it is characterised in that also include：

If the user is less than preset value with the distance of illuminator, sends corresponding correcting sitting posture and remind.

5. it is a kind of adjust brightness device, it is characterised in that include for obtaining the photosensitive sensor of ambient light intensity, being used for Adjust the controller of brightness, the final luminance parameter for recording user's regulation and generated according to the final luminance parameter fitting The control chip of new brightness regulation curve, wherein, if the luminance parameter that the user is adjusted is adjusted automatically more than default brightness Whole scope, then the control chip will immediate value be remembered with the brightness of user regulation in the range of the brightness adjust automatically Record as final luminance parameter.

6. it is according to claim 5 adjust brightness device, it is characterised in that the control chip includes：

Brightness pinpoints acquiring unit, for the final luminance parameter is reacted to coordinate system, obtains corresponding brightness fixed point；

Brightness regulation curve matching unit, for pinpointing according to the brightness, adjusts predetermined luminance adjustment curve, if after adjustment The quadratic sum of the distance that curve is pinpointed to the brightness is minima, then the curve is new brightness regulation curve.

7. it is according to claim 6 adjust brightness device, it is characterised in that also include：

Range sensor, for obtaining the distance of the user and illuminator, wherein, the distance and the illuminator Brightness is proportionate.

8. it is according to claim 3 adjust brightness device, it is characterised in that also include：

Loudspeaker module, for being less than preset value as the user with the distance of illuminator, then sends corresponding correcting sitting posture Remind.

9. a kind of intelligent desk lamp, it is characterised in that including the device of the regulation brightness described in any one of claim 6 to 8.

10. intelligent desk lamp according to claim 9, it is characterised in that the controller is LCD touch screen.