KR20110125425A - Apparatus and method for controlling elevator - Google Patents

Abstract

PURPOSE: An elevator control device is provided to prevent unnecessary power consumption by deciding the stop and pass of an elevator using elevator platform images taken by a camera. CONSTITUTION: An elevator control device comprises a platform button(11), a camera(13), a chroma transform part(21), a counting part(22), and a driving control part(23). The camera is installed outside an elevator to take an image of platform for first time and second time. The chroma transform part transmits the image, taken in the first time, into first chroma image data. The chroma transform part changes the second image, taken in the second time, into second chroma image data. The counting part counts the number of first pixel including a designated specific color chroma of the first chroma image data. The counting part counts the number of second pixel including a designated specific color chroma of the second chroma image data.

Description

Elevator control device {Apparatus and method for controlling elevator}

The present invention relates to an elevator control apparatus and method.

In general, in the current elevator, when the elevator button outside the elevator is pressed, the elevator stops on the floor where the elevator button is pressed even if there is no person in front of the elevator, and the elevator door is opened.

In particular, in a multi-storey building such as an apartment, if someone intentionally called the boarding button on all floors, the elevator will stop on the floor where the boarding button is called regardless of the presence or absence of a person.

Regardless of the presence or absence of people, the elevator stops unconditionally, unnecessary power is consumed and a lot of time is consumed due to the opening of the landing door, which shortens the life of the elevator.

The present invention provides an elevator control apparatus and method which can reduce unnecessary power consumption and waste of running time by stopping the elevator and opening the landing door only when there is a person in front of the elevator.

According to one feature of the invention, the elevator button in the elevator platform calling the elevator, installed on the outside of the elevator, in conjunction with the elevator button and photographed the platform at the first time the elevator button is pressed, the first A camera unit photographing the platform at a second time elapsed from the reference time, converting the first video image photographed at the first time into first chroma image data, and photographing the second video image at the second time A saturation conversion unit for converting the saturation image data into second saturation image data, and counting the number of first pixels included in a saturation range of a specific color gamut among the first chroma image data, and a chroma range of the specific color gamut among the second chroma image data. A pixel number counting unit that counts the number of second pixels included in the memory; and comparing the number of the first pixels with the number of second pixels, The elevator control apparatus including a driving control unit for determining a pause / excess if the elevator is provided in the called layer.

According to another feature of the present invention, the step of calling the landing button in the elevator platform, is installed on the outside of the elevator using the camera interlocked with the landing button to shoot the platform at the first time the button is pressed, Photographing the platform at a second time elapsed by the reference time from the first time, converting the first image image photographed at the first time into first chroma image data, and the second image photographed at the second time Converting an image image into second chroma image data, counting a number of first pixels included in a chroma range of a specific color gamut among the first chroma image data, and a chroma range of the specific color gamut among the second chroma image data Counting the number of second pixels included in the, comparing the number of the first pixel and the number of the second pixel, the landing button is called The elevator control method for determining a pause / excess if the elevator is provided in the.

According to an embodiment of the present invention, the elevator unit is photographed using a camera unit, and the person is present in the elevator platform by determining whether the person is present in the platform based on the photographed image and determining whether the elevator is stopped or passed. Only stop the elevator to reduce unnecessary power consumption and running time wasted.

In addition, the elevator life can be extended by stopping the elevator only when there are people in the elevator platform, thereby reducing unnecessary power consumption and waste of running time.

1 is a schematic configuration diagram of an elevator control apparatus according to an embodiment of the present invention.
Figure 2 is a graph modeling the distribution of skin color as a two-variable normal distribution.
3 is a flowchart illustrating an elevator control method according to an exemplary embodiment of the present invention.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may exist in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Now, elevator control apparatus and method according to an embodiment of the present invention will be described in detail with reference to the drawings, the same or corresponding components are given the same reference numerals regardless of the reference numerals and redundant description thereof will be omitted. do.

1 is a schematic configuration diagram of an elevator control apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the elevator control apparatus of the present invention is largely composed of an elevator 10 and an elevator control apparatus 20.

The elevator 10 includes an elevator button 11, an elevator door 12, and a camera unit 13. The elevator controller 20 includes a chroma conversion unit 21, a pixel counting unit 22, and an operation control unit. 13, the driving driver 14 is included.

The boarding button 11 is installed outside the elevator and includes a lamp that can indicate the presence or absence of a call when called by the user.

When the user presses the board button 11, the lamp is turned on, and when the user presses the board button 11 again, the lamp of the board button 11 is turned off.

The camera unit 13 is installed outside of the elevator and interlocks with the boarding button 11. As shown in FIG. 1, the camera unit 13 is installed at a position where the elevator platform can be photographed.

The camera unit 13 photographs the boarding point at the first time t at which the boarding button 11 is pressed, and photographs the boarding point at the second time t + n elapsed from the first time by the reference time n. The captured video image is output to the chroma converter 21.

The chroma conversion unit 21 of the elevator controller 20 converts the first image image photographed at the first time into first chroma image data, and converts the second image image photographed at the second time to the second chroma image data. Convert to

Saturation image data means color components Cb and Cr among YCbCr signals.

In the present invention, the image image is converted into chroma image data, but after converting the image image to RGB image data, the RGB image data may be converted to chroma image data.

The pixel number counting unit 22 counts the number of pixels included in the chroma range of the specific color gamut among the chroma image data.

In this case, the specific color gamut is a specific saturation range or a specific luminance range, and may vary in skin color, hair color, red, green, blue, and the like. However, in the present invention, the skin color of the face area is set to a specific color gamut. In the following description, a specific color gamut is represented as a skin gamut for convenience of description.

2 is a graph modeling the distribution of skin color as a two-variable normal distribution, where the X-axis is the value of the Cb color difference signal and the Y-axis is the value of the Cr color difference signal.

The skin gamut of FIG. 2 is a color gamut extracted by statistically examining the skin color of Korean people, and the skin gamut may be extracted differently according to the country and race.

The pixel counting unit 22 counts the number of first pixels included in the saturation range of the specific color gamut among the first chroma image data, and counts the number of second pixels included in the saturation range of the specific color gamut among the second chroma image data. do.

Herein, the number of pixels included in the saturation range of the specific color gamut is the number of pixels of the face area, and when the number of the first pixels is less than the predetermined reference number, the driving controller 23 determines that no person is present in the elevator platform. Elevator stop ".

However, if the number of the first pixels is equal to or greater than the predetermined reference number, the driving controller 23 compares the number of the first pixels with the number of the second pixels to determine whether a person exists in the elevator platform.

More specifically, the driving controller 23 compares the number of first pixels and the number of second pixels when the number of first pixels is equal to or greater than a predetermined reference number, and determines whether there is a person in the elevator platform over time.

When the number of the first pixels is equal to or greater than the preset reference number, when the number of the first pixels is equal to or greater than the second number of pixels, the driving controller 23 determines that there is a person in the elevator platform and determines "elevator stop". When the elevator stop is determined, the driving control unit 23 outputs a control signal informing the driving driving unit 24 of the elevator stopping.

Then, the driving driver 24 stops the elevator on the floor where the boarding button is called and opens the boarding door 12.

On the contrary, when the number of the first pixels is greater than or equal to the preset reference number, and the number of the first pixels is less than the number of the second pixels, the driving controller 23 determines that there is no person in the elevator platform and determines "over elevator". . When the elevator passing is determined, the driving control unit 23 outputs a control signal notifying the elevator passing to the driving driving unit 24 and outputs a control signal for turning off the ramp button 11.

Then, the driving driver 24 turns off the lamp of the elevator button 11 while passing the elevator without stopping the elevator on the floor where the elevator button is called.

As described above, in the present invention, the elevator platform is photographed using the camera unit 13, and the elevator platform is determined by determining whether the person exists in the platform based on the photographed video image and determining whether the elevator is stopped or passed. Only when people are present can the elevator be stopped to reduce unnecessary power consumption and waste of running time.

For this reason, elevator life can be extended.

3 is a flowchart illustrating an elevator control method according to an exemplary embodiment of the present invention.

As shown in Figure 3, when the landing button 11 is called (S301), the camera unit 13 photographs the landing (S302).

Then, at the first time when the boarding button 11 is called, the boarding point is photographed again at the second time when the reference time has elapsed (S303).

The chroma conversion unit 21 converts the first image image photographed at the first time into first chroma image data, and converts the second image image photographed at the second time into second chroma image data (S304).

The pixel counting unit 22 counts the first pixel number, which is the number of pixels included in the saturation range of the specified color gamut among the first chroma image data converted by the chroma converter 21, and among the second chroma image data. The number of second pixels, that is, the number of pixels included in the saturation range of the specific color gamut, is counted (S305).

First, the driving controller 23 determines whether the number of first pixels is equal to or greater than a predetermined reference number (S306).

If the number of the first pixels is less than the reference number, the driving controller 23 determines that there is no person in the landing hall and determines that the elevator is over (S307).

However, if the number of first pixels is equal to or greater than the reference number, the driving controller 23 compares the number of first pixels with the number of second pixels (S308).

If the number of the first pixels is equal to or greater than the number of the second pixels, the driving controller 23 determines that the person exists on the floor on which the boarding button 11 is called and determines the elevator stop (S309).

However, if the number of the first pixels is less than the number of the second pixels, the driving controller 23 determines that there is no person on the floor on which the lift button 11 is called (S310).

In addition, when the elevator control unit 23 determines that the elevator passes in the state where the elevator button 11 is called, the driving control unit 23 outputs a control signal for turning off the lamp of the elevator button 11 to the driving driver 24.

Then, the driving driver 24 turns off the lamp of the entrance button 11.

As such, when the elevator overpass is determined in the present invention, the boarding button 11 is turned off to automatically cancel the previous call so that the elevator can wait for the next call.

In addition, in the present invention, the elevator platform is photographed using the camera unit 13, and the image of the elevator is determined based on the photographed image to determine whether the person is present in the platform, and accordingly determines whether the elevator stops or passes, Only when people are present can the elevator be stopped to reduce unnecessary power consumption and waste of running time.

For this reason, elevator life can be extended.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

10: elevator
11: board button
13: camera
21: chroma conversion unit
22: pixel count counting unit
23: driving control unit
24: driving drive unit

Claims (15)

The elevator button to call the elevator in the elevator platform,
A camera unit installed outside the elevator, the camera unit photographing the platform at a first time when the platform button is pressed in conjunction with the platform button, and photographing the platform at a second time elapsed from the first time by a reference time;
A saturation converter configured to convert the first image image photographed at the first time into first chroma image data, and convert the second image image photographed at the second time into second chroma image data;
Counting the number of first pixels included in the saturation range of the specific color gamut among the first chroma image data, and Counting the number of pixels counting the number of second pixels included in the saturation range of the specific chroma gamut among the second chroma image data Wealth, and
If the number of the first pixel is equal to or greater than the predetermined reference number, the operation control unit for comparing the number of the first pixel and the number of the second pixel, the operation control unit for determining whether or not to stop / pass the elevator on the floor where the landing button is called; Elevator counterweight. The method of claim 1,
The driving control unit,
The elevator control apparatus for determining the elevator passing, if the number of the first pixel is less than the reference number. The method of claim 1,
The driving control unit,
If the number of the first pixel is equal to or greater than the number of the second pixel, it is determined that the elevator is stopped on the floor on which the boarding button is called.
And when the number of the first pixels is less than the number of the second pixels, determining the passing of the elevator on the floor on which the boarding button is called. The method of claim 2,
And a driving driver for stopping the elevator on the floor on which the boarding button is called, or operating the elevator excessively on the floor on which the boarding button is called, as determined by the driving control unit. The method of claim 4, wherein
The driving drive unit,
When the elevator stop is determined by the operation control unit, the elevator control device to open the elevator door of the elevator on the floor where the elevator button is called. The method of claim 1,
The boarding button includes a lamp indicating whether or not the call, the lamp is on the elevator control device. The method of claim 6,
And the driving control unit outputs a control signal for turning off the ramp of the boarding button when it is determined that the elevator passes on the floor where the boarding button is called. The method of claim 1,
The specific color gamut is an elevator control device. The method of claim 8,
The saturation range of the skin gamut is a range extracted by statistically examining the skin colors of a plurality of persons, and the elevator control apparatus can vary according to race. Step of calling the landing button in the elevator platform,
Taking the boarding point at a first time when the boarding button is pressed by using a camera interlocked with the boarding button, and photographing the boarding point at a second time elapsed from the first time. step,
Converting the first image image photographed at the first time into first chroma image data, and converting the second image image photographed at the second time to second chroma image data;
Counting a number of first pixels included in a saturation range of a specific color gamut among the first chroma image data, and counting a number of second pixels included in a saturation range of the specific color gamut among the second chroma image data; and
And comparing the number of the first pixels with the number of the second pixels to determine whether the elevator is stopped / passed on the floor where the boarding button is called. The method of claim 10,
Determining whether the elevator is stopped / passed,
If the number of the first pixels is equal to or greater than the number of the second pixels, determining a stop of the elevator on the floor on which the boarding button is called; and
If the first number of pixels is less than the second number of pixels, determining the passing of the elevator on the floor where the boarding button is called. The method of claim 10,
The boarding button includes a lamp indicating whether or not the call, the lamp is on the elevator control method. The method of claim 12,
After determining whether the elevator is stopped / passed,
If the elevator is determined that the passing of the elevator button further comprises the step of turning off the ramp of the elevator button. The method of claim 10,
And said specific gamut is a skin gamut. The method of claim 14,
The saturation range of the skin gamut is a range extracted by statistically examining the skin colors of a plurality of persons, and the elevator control method may vary according to race.

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