CN106341924B - A kind of control method and device of the LED night-lights of induced environment - Google Patents

Abstract

The invention discloses a method and device for controlling an LED night light that senses the environment. This method sequentially detects the distance of surrounding objects, sorts the distances, screens the distance values lower than the set value, obtains the color of the object corresponding to the screened distance value, and matches the color of the LED night light according to the obtained color, so as to control The glowing color of the LED night light. By adopting the method of the invention, the luminous color of the LED night light is changed by sensing the color of the surrounding environment, thereby increasing the softness of the night light and achieving coordination with the surrounding environment.

Description

A control method and device for an LED night light that senses the environment

technical field

The invention relates to the field of lighting, in particular to a method and device for controlling an LED night light that senses the environment.

Background technique

LED night lights are mainly placed on the bedside of the bedroom when used at home to help users illuminate at night. Existing LED night lights have fixed luminous colors, such as red, yellow and other colors, which are the same luminous colors in any environment. Because it is always on when it is in use, the brightness of the light remains unchanged, which may cause color incongruity with the surrounding environment, and the softness is not good.

Contents of the invention

The object of the present invention is to provide a control method and device for an LED night light that senses the surrounding environment. By sensing the color of the surrounding environment, the luminous color of the LED night light is changed, thereby increasing softness and achieving coordination with the surrounding environment.

To achieve the above object, the present invention provides the following scheme:

A method for controlling an LED night light that senses the environment, the method comprising:

Obtaining a first distance value between objects around the LED night light and the LED night light;

sorting the first distance values;

filtering the first distance value lower than the set value according to the sorting result to obtain the second distance value;

Acquiring the color of the object corresponding to the second distance value;

performing color matching according to the color of the object corresponding to the second distance value to obtain a color matching result;

The color matching result is sent to a light emitting module, and the light emitting module is used to control the LED night light to emit light.

Optionally, the obtaining the first distance value between the objects around the LED night light and the LED night light specifically includes: obtaining the distance between the six facing objects of a cube centered on the LED night light and the The distance value of the LED night light.

Optionally, the sorting the first distance values specifically includes: sorting in ascending order or descending order.

Optionally, the screening of the first distance value lower than the set value specifically includes:

For the sorting result D ₁ <D ₂ <D ₃ <...<D _n , D ₁ represents the distance value of the first object from the LED night light, and D ₂ represents the distance value of the second object from the LED night light The distance value, _D3 represents the distance value of the third object from the LED night light, and _Dn represents the distance value of the nth object from the LED night light;

When the distance value difference between D ₃ and D ₂ is less than the set value, select D ₁ , D ₂ , and D ₃ to obtain the second distance value;

When the difference between the distance values of D ₃ and D ₂ is greater than the set value, D ₁ and D ₂ are selected to obtain the second distance value.

Optionally, the performing color matching according to the color of the object corresponding to the second distance value specifically includes:

Applying the formula to the color of the object corresponding to the second distance value

j≥2 for linear combination, wherein L is the color after color matching according to the color of the object corresponding to the second distance value, that is, the obtained color matching result, D ₁ is the distance value corresponding to the first object, and X ₁ is the distance value corresponding to the second distance value The color corresponding to an object, D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the corresponding distance value of the jth object , and j is the number of distance values in the second distance value.

Optionally, the performing color matching according to the color of the object corresponding to the second distance value specifically includes:

According to the color of the object corresponding to the second distance value, the formula is used

j≥2 for linear combination, where L is the color after color matching according to the color of the object corresponding to the second distance value, D ₁ is the distance value corresponding to the first object, and X ₁ is the color corresponding to the first object , D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the color corresponding to the jth object, and j is the color corresponding to the jth object The number of distance values in the second distance value;

The formula L=C ₁ R+C ₂ G+C ₃ B is used for color matching of the three primary colors, and the color matching ratio coefficient of each primary color in the three primary colors is determined, wherein L is after the color matching is performed according to the color of the object corresponding to the second distance value Color, R means red, C ₁ is the color matching ratio coefficient of red, G means green, C ₂ is the color matching ratio coefficient of green, B means blue, and C ₃ is the color matching ratio coefficient of blue.

An LED night light device for sensing environment, said device comprising:

A distance acquisition module, configured to acquire a first distance value between objects around the LED night light and the LED night light;

a distance sorting module, configured to sort the first distance values;

A distance screening module, configured to filter the first distance value lower than the set value according to the sorting result to obtain the second distance value;

A color acquisition module, configured to acquire the color of the object corresponding to the second distance value;

a color matching module, configured to perform color matching according to the color of the object corresponding to the second distance value, to obtain a color matching result;

The color matching result sending module is configured to send the color matching result to a light emitting module, and the light emitting module is used to control the LED night light to emit light.

Optionally, the color matching module specifically includes:

A calculation unit, the calculation unit is used to apply a formula to the color of the object corresponding to the second distance value j≥2 for linear combination to obtain the color matching result, wherein L is the color after color matching according to the color of the object corresponding to the second distance value, that is, the obtained color matching result, and D1 is the distance value corresponding to the _first object, X ₁ is the color corresponding to the first object, D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, and X _j is the distance value corresponding to the jth object The colors corresponding to the j objects, where j is the number of distance values in the second distance value.

Optionally, the color matching module specifically includes:

A calculation unit, the calculation unit is used to adopt a formula according to the color of the object corresponding to the second distance value j≥2 for linear combination, where L is the color after color matching according to the color of the object corresponding to the second distance value, D ₁ is the distance value corresponding to the first object, and X ₁ is the color corresponding to the first object , D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the color corresponding to the jth object, j is the The number of distance values in the second distance value;

A three-primary color matching unit, the three-primary color matching unit is used to use the formula L=C ₁ R+C ₂ G+C ₃ B to carry out three-primary color matching, and determine the color matching ratio coefficient of each primary color in the three primary colors, wherein L is according to the The color of the object corresponding to the second distance value after color matching, R means red, C ₁ is the color matching ratio coefficient of red, G means green, C ₂ is the color matching ratio coefficient of green, B means blue, and C ₃ is blue Color matching scale factor.

According to the specific embodiments provided by the invention, the invention discloses the following technical effects:

The LED night light can automatically identify the color of the surrounding azimuth, and change the luminous color of the LED night light by sensing the color of the surrounding environment, thereby increasing the softness, making the luminous color of the LED night light coordinated with the color of the surrounding environment, and the integrity is strong.

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 accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 is the flow chart of the control method of the LED night light of sensing environment of the present invention;

Fig. 2 is a structural diagram of the LED night light device for sensing the environment 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.

The object of the present invention is to provide a control method and device for an LED night light that senses the surrounding environment. By sensing the color of the surrounding environment, the luminous color of the LED night light is changed, thereby increasing softness and achieving coordination with the surrounding environment.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a flow chart of the control method of the LED night light sensing the environment of the present invention. As shown in Figure 1, the method includes:

Step 101: Obtain the distance value between the surrounding objects and the LED night light. The surrounding objects can be objects in the six directions of the cube with the LED night light as the center, that is, objects in the six directions of up, down, left, right, front and back. If only the distance values of 2 objects or 3 objects are obtained, the distance values of other directions are recorded as infinity.

The specific process of obtaining the distance value can be to use a distance sensor to measure the time interval from the emission of the light pulse to the time when the light pulse is reflected back by the surrounding objects by reflecting a particularly short light pulse, and then calculate the distance to the surrounding environment, and measure the up and down before and after. The straight-line distance between the object in the left and right directions and the center of the LED night light, and obtain 6 distance values. If there are two objects before and after the same orientation, the distance value obtained in this orientation is the distance value between the front object and the LED night light, because after the light pulse is reflected by the object close to the LED night light, the object behind will be Objects that are far away from the LED night light do not receive the light pulse and therefore do not reflect.

The order of obtaining the distance values of the six azimuths can be set artificially, or it can be a fixed order built into the LED night light. The obtained distance value may also be a distance value of more than six directions or less than six directions.

Step 102: Sort the obtained distance values, and the sorting rule can be from small to large, or from large to small.

Step 103: According to the sorting result, filter the distance values lower than the set distance value.

The set distance value can be a specific value, and an appropriate distance value can be set according to the size of the environment where the night light is located, and the object distance value lower than the set distance value is the filtering result.

The set distance value can also be a set rule, and the set rule can be: for the sorting result D ₁ <D ₂ <D ₃ <...<D _n , D ₁ represents the distance between the first object and the LED The distance value of the night light, D ₂ represents the distance value of the second object from the LED night light, D ₃ represents the distance value of the third object from the LED night light, D _n represents the distance of the nth object from the The distance value of the LED night light;

When the distance difference between D ₃ and D ₂ is less than the set value (for example, the set value can be 6 times or more than D ₂ ), then D ₁ , D ₂ , D ₃ are selected as the screening results; this This situation can correspond to the LED night light placed on the head of the bed and close to two walls;

When the distance difference between D ₃ and D ₂ is greater than the set value, then D ₁ and D ₂ are selected, which is the screening result. This situation can correspond to the LED night light placed on the head of the bed and close to a wall. The above two situations are the most common situations where night lights are placed.

Step 104: Obtain the object color corresponding to the distance value in the filtering result according to the filtering result. The color sensor can be used to obtain the color. By comparing the received object color with the internally stored reference color, when the received color matches the reference color within a certain error range, the received color result will be output. The output color results and corresponding distance values are sent to the color matching module.

Step 105: Perform color matching according to the received color and distance value to obtain a color matching result. The color matching process can be: using the formula j≥2 for linear combination, where L is the color after color matching according to the color of the received object, that is, the obtained color matching result, D ₁ is the distance value corresponding to the first object, and X ₁ is the distance value corresponding to the first object , D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the color corresponding to the jth object, j is the number of distance values in the second distance value, and j takes a value of 2 or 3 in this embodiment.

Step 106: Send the color matching result L to the light emitting module, and the light emitting module controls the LED night light to emit light. The process of controlling the light emission of the LED night light can be as follows: according to the color matching result L in step 105, the formula L=C ₁ R+C ₂ G+C ₃ B is used for color matching of the three primary colors, and the color matching ratio coefficient of each primary color in the three primary colors is determined, wherein R represents Red, C ₁ is the color matching ratio coefficient of red, G is green, C ₂ is the color matching ratio coefficient of green, B is blue, and C ₃ is the color matching ratio coefficient of blue. The LED night light is controlled to emit light according to the obtained color matching ratio coefficients of each primary color in the three primary colors.

In the above implementation process, the color matching process in step 105 can also be: using the formula

j≥2 for linear combination, where L is the color after color matching according to the color of the received object, D1 is the distance value corresponding to the first object, X ₁ is the color corresponding to the first object, and D ₂ is the second The distance value corresponding to the object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the color corresponding to the jth object, and j is the distance in the second distance value The number of values, in this embodiment, j takes a value of 2 or 3;

The formula L=C ₁ R+C ₂ G+C ₃ B is used for color matching of the three primary colors, and the color matching ratio coefficient of each primary color in the three primary colors is determined, wherein L is after the color matching is performed according to the color of the object corresponding to the second distance value Color, R means red, C ₁ is the color matching ratio coefficient of red, G means green, C ₂ is the color matching ratio coefficient of green, B means blue, and C ₃ is the color matching ratio coefficient of blue.

Then step 106 is to send the color matching ratio coefficients of each of the three primary colors to the light emitting module, and the light emitting module controls the LED night light to emit light according to the received color matching ratio coefficients.

Fig. 2 is a structural diagram of the LED night light device for sensing the environment of the present invention. As shown in Figure 2, the device includes:

The distance acquisition module 201 is used to obtain the distance value between the objects around the LED night light and the LED night light; the surrounding objects can be objects in the orientation of the six faces of the cube with the LED night light as the center, that is, six up, down, left, right, front and back oriented objects.

The distance acquisition module 201 can be a distance sensor. By reflecting a particularly short light pulse, it measures the time interval from when the light pulse is emitted to when it is reflected by surrounding objects, and then calculates the distance to the surrounding environment. The straight-line distance between the object in azimuth and the center of the LED night light, and get 6 distance values. The obtained distance value may also be a distance value of more than six directions or less than six directions.

The distance sorting module 202 is used to sort the obtained distance values, and the distance sorting module 202 can be an ascending sorting module or a descending sorting module;

The distance screening module 203 is configured to screen the distance values lower than the set value according to the sorting result. According to the different filtering rules, the filtering results are different. The filtering rules can be: the set distance value is a specific value, and an appropriate distance value can be set according to the size of the environment where the night light is located. The object distance value is the filtering result.

The set distance value can also be a set rule, and the set rule can be: for the sorting result D ₁ <D ₂ <D ₃ <...<D _n , D ₁ represents the distance between the first object and the LED The distance value of the night light, D ₂ represents the distance value of the second object from the LED night light, D ₃ represents the distance value of the third object from the LED night light, D _n represents the distance of the nth object from the The distance value of the LED night light;

When the distance difference between D ₃ and D ₂ is less than the set value (for example, the set value can be 6 times or more than D ₂ ), then D ₁ , D ₂ , D ₃ are selected as the screening results; this This situation can correspond to the LED night light placed on the head of the bed and close to two walls;

When the distance difference between D ₃ and D ₂ is greater than the set value, then D ₁ and D ₂ are selected, which is the screening result. This situation can correspond to the LED night light placed on the head of the bed and close to a wall. The above two situations are the most common situations where night lights are placed.

The color acquisition module 204 is configured to acquire the color of the object corresponding to the filtered distance value. The color acquisition module 204 can adopt a color sensor, and its working principle is to compare the received object color with the reference color stored inside, and output the received color when the received color matches the reference color within a certain error range As a result, the output color results and corresponding distance values are sent to the color matching module.

The color matching module 205 is used to perform color matching according to the received color and the distance value of the corresponding object to obtain the color matching result, and the formula can be used

j≥2 for linear combination, where L is the color after color matching according to the color of the received object, that is, the obtained color matching result, D ₁ is the distance value corresponding to the first object, and X ₁ is the distance value corresponding to the first object , D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, and X _j is the color corresponding to the jth object.

The color matching result L is sent to the light emitting module 207 through the color matching result sending module 206, and the light emitting module 207 controls the LED night light to emit light. The process of controlling the light emission of the LED night light can be as follows: according to the color matching result L in step 105, the formula L=C ₁ R+C ₂ G+C ₃ B is used for color matching of the three primary colors, and the color matching ratio coefficient of each primary color in the three primary colors is determined, wherein R represents Red, C ₁ is the color matching ratio coefficient of red, G is green, C ₂ is the color matching ratio coefficient of green, B is blue, and C ₃ is the color matching ratio coefficient of blue. The LED night light is controlled to emit light according to the obtained color matching ratio coefficients of each primary color in the three primary colors.

As another implementation, the color matching process of the color matching module 205 can also be: using the formula

j≥2 for linear grouping

Combined, where L is the color after color matching according to the color of the received object, D1 is the distance value corresponding to the first object, X ₁ is the color corresponding to the first object, and D ₂ is the distance value corresponding to the second object , X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the color corresponding to the jth object, and j is the number of distance values in the second distance value, In this embodiment, j takes a value of 2 or 3;

The formula L=C ₁ R+C ₂ G+C ₃ B is used for color matching of the three primary colors, and the color matching ratio coefficient of each primary color in the three primary colors is determined, wherein L is after the color matching is performed according to the color of the object corresponding to the second distance value Color, R means red, C ₁ is the color matching ratio coefficient of red, G means green, C ₂ is the color matching ratio coefficient of green, B means blue, and C ₃ is the color matching ratio coefficient of blue.

The color matching ratio coefficients of each of the three primary colors are sent to the light emitting module 207 through the color matching result sending module 206, and the light emitting module 207 lights up the red, green and blue three primary color integrated LEDs according to the received color matching ratio coefficients, and controls the LED night light to emit light.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; meanwhile, for those of ordinary skill in the art, according to the present invention Thoughts, there will be changes in specific implementation methods and application ranges. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (3)

1. A control method of an LED night light inductive environment, characterized in that, the method comprises: Obtaining a first distance value between objects around the LED night light and the LED night light; sorting the first distance values in ascending or descending order; Screen the first distance value lower than the set value according to the sorting result to obtain the second distance value; specifically include: for the sorting result D ₁ <D ₂ <D ₃ <...<D _n , D ₁ represents the first The distance value of the first object from the LED night light, D2 represents the distance value of the _second object from the LED night light, _D3 represents the distance value of the third object from the LED night light, and _Dn represents the distance value of the second object from the LED night light The distance value of n objects from the LED night light; when the difference between the distance values of D ₃ and D ₂ is less than the set value, then select D ₁ , D ₂ , D ₃ to obtain the second distance value; when D _3. When the distance value difference between D ₂ and D 2 is greater than the set value, select D ₁ and D ₂ to obtain the second distance value; Acquiring the color of the object corresponding to the second distance value; Perform color matching according to the color of the object corresponding to the second distance value to obtain a color matching result, which specifically includes: using a formula for the color of the object corresponding to the second distance value j≥2 for linear combination, wherein L is the color after color matching according to the color of the object corresponding to the second distance value, that is, the obtained color matching result, D ₁ is the distance value corresponding to the first object, and X ₁ is the distance value corresponding to the second distance value The color corresponding to an object, D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the corresponding distance value of the jth object , j is the number of distance values in the second distance value; or, according to the color of the object corresponding to the second distance value, the formula j≥2 for linear combination, where L is the color after color matching according to the color of the object corresponding to the second distance value, D ₁ is the distance value corresponding to the first object, and X ₁ is the color corresponding to the first object , D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the color corresponding to the jth object, and j is the color corresponding to the jth object Describe the number of distance values in the second distance value; adopt the formula L=C ₁ R+C ₂ G+C ₃ B to carry out the color matching of the three primary colors, determine the color matching ratio coefficient of each primary color in the three primary colors, wherein L is according to the first described The color of the object corresponding to the distance value after color matching, R means red, C ₁ is the color matching ratio coefficient of red, G means green, C ₂ is the color matching ratio coefficient of green, B means blue, and C ₃ is blue The color ratio coefficient of ; The color matching result is sent to a light emitting module, and the light emitting module is used to control the LED night light to emit light. 2. The method according to claim 1, wherein said obtaining the first distance value between objects around said LED night light and said LED night light specifically comprises: obtaining a cube centered on said LED night light The distance value of the six facing objects from the LED night light. 3. An LED night light device for sensing the environment, characterized in that the device comprises: A distance acquisition module, configured to acquire a first distance value between objects around the LED night light and the LED night light; A distance sorting module, configured to sort the first distance values in ascending or descending order; The distance screening module is used to filter the first distance value lower than the set value according to the sorting result to obtain the second distance value; specifically includes: for the sorting result D ₁ <D ₂ <D ₃ <...<D _n , D ₁ represents the distance value of the first object from the LED night light, D ₂ represents the distance value of the second object from the LED night light, D ₃ represents the distance of the third object from the LED night light value, D _n represents the distance value of the nth object from the LED night light; when the difference between the distance values of D ₃ and D ₂ is less than the set value, D ₁ , D ₂ , D ₃ are selected to obtain the first Two distance values; when the difference between the distance values of D ₃ and D ₂ is greater than the set value, then select D ₁ and D ₂ to obtain the second distance value; A color acquisition module, configured to acquire the color of the object corresponding to the second distance value; The color matching module is configured to perform color matching according to the color of the object corresponding to the second distance value to obtain a color matching result, which specifically includes: using a formula for the color of the object corresponding to the second distance value j≥2 for linear combination, wherein L is the color after color matching according to the color of the object corresponding to the second distance value, that is, the obtained color matching result, D ₁ is the distance value corresponding to the first object, and X ₁ is the distance value corresponding to the second distance value The color corresponding to an object, D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the corresponding distance value of the jth object , j is the number of distance values in the second distance value; or, according to the color of the object corresponding to the second distance value, the formula j≥2 for linear combination, where L is the color after color matching according to the color of the object corresponding to the second distance value, D ₁ is the distance value corresponding to the first object, and X ₁ is the color corresponding to the first object , D ₂ is the distance value corresponding to the second object, X ₂ is the color corresponding to the second object, D _j is the distance value corresponding to the jth object, X _j is the color corresponding to the jth object, and j is the color corresponding to the jth object Describe the number of distance values in the second distance value; adopt the formula L=C ₁ R+C ₂ G+C ₃ B to carry out the color matching of the three primary colors, determine the color matching ratio coefficient of each primary color in the three primary colors, wherein L is according to the first described The color of the object corresponding to the distance value after color matching, R means red, C ₁ is the color matching ratio coefficient of red, G means green, C ₂ is the color matching ratio coefficient of green, B means blue, and C ₃ is blue The color ratio coefficient of ; The color matching result sending module is configured to send the color matching result to a light emitting module, and the light emitting module is used to control the LED night light to emit light.