KR20200006673A - Method and device for extracting motion position by applying weights during beam scanning analysis - Google Patents

Abstract

A method for motion position detection applying a weight during beam scanning analysis analyzes a signal of a reflection frequency for a radio frequency transmitted via an antenna to divide a detection area into a plurality of cells, receives a radio beam measured for each cell of the detection area to store a signal value of the received radio beam in each cell corresponding to a target matrix (l, x, m), generates a weight matrix to apply the weight matrix to the signal value of each cell of the target matrix, and detects a cell having a maximum value among cells of a result matrix obtained by applying the weight matrix to the target matrix as a motion position of a target. Accordingly, a signal in the vicinity of a target area is collected and a weight is assigned to the signal to determine the position to eliminate a need for long-time collection to obtain a maximum signal in accordance with a motion state. Therefore, scanning can be quickly performed, and accuracy can be improved by compensating for motion states or errors.

Description

METHOD AND DEVICE FOR EXTRACTING MOTION POSITION BY APPLYING WEIGHTS DURING BEAM SCANNING ANALYSIS}

The present invention relates to a method and apparatus for detecting a motion position to apply a weight to a beam scanning analysis. More particularly, the present invention relates to a method for detecting a motion position by reducing the error by applying a weight to a signal according to a viewpoint of an object. The present invention relates to a method and an apparatus for detecting a position of a beam by applying a weight in a beam scanning analysis using a moving position detecting radar.

In general, a radar is a device that emits electromagnetic waves and receives echoes of electromagnetic waves reflected from the surface of a target object. The radar detects the presence of a target or receives a response signal from an answering machine (radar responder) in the target. It is a device mainly used when confirming by doing.

Conventional motion recognition radars require a sufficiently long time signal acquisition to determine motion. In particular, in the case of human movement, since the movement does not have a constant speed but a momentary small movement (for example, when the user steps on the foot), a relatively slow scanning method is performed by collecting a long time signal to determine an accurate movement. Use

Korean Patent Publication No. 10-2015-0001393 Korean Patent Publication No. 10-2018-0047067 European Patent EP2947448A1

The technical problem of the present invention was conceived in this respect, and an object of the present invention is to weight a received signal by using a detection radar to calculate a larger value as it is closer to an operating position, and thereby to determine the position of the movement. The present invention provides a method for detecting an operation position to which weights are applied during beam scanning analysis.

Another object of the present invention is to provide an apparatus for performing an operation position detection method applying a weight in the beam scanning analysis.

According to an exemplary embodiment of the present invention, an operation position detection method for applying a weight in a beam scanning analysis may include analyzing a signal of a reflection frequency with respect to a radio wave frequency transmitted through an antenna to determine a detection area in a plurality of cells (lⅹm, where l And m is a natural number), and sequentially transmits a propagation beam to each cell of the detection area, and stores the signal value of the propagation beam measured for each cell of the detection area in each cell corresponding to the target matrix lⅹm. Generate a weighting matrix (nⅹn, where n is a natural number equal to or less than l and m), and apply the weighting matrix to signal values of each cell of the target matrix. The cell having the maximum value among the resultant matrices is detected as the operation position of the target.

Applying the weighting matrix to the signal value of each cell of the target matrix, the median of the weighting matrix is applied to the target cell of the target matrix to calculate a result value, and the peripheral value of the weighting matrix of the target matrix The result value may be calculated by being applied to neighboring cells of the target cell.

Detecting the cell having the maximum value among the result matrix as the operation position of the target, when the result value is calculated for each cell of the target matrix by applying the weighting matrix, the peripheral value of each cell and the target cell is added A result value may be calculated, and the result matrix may be generated according to each final result value stored in each cell of the target matrix to detect an operation position.

The target matrix may be divided into a cell existing at an edge of the target matrix, a cell existing at the outermost side except the edge, and a cell existing at the center except the edge and the outermost side.

In the method of detecting an operation position by applying a weight in the beam scanning analysis, an additional weight value may be assigned to each signal value of a cell existing at the edge and a cell existing at the outermost side except the edge.

The detection area is a space for scanning the periphery of the object at the propagation frequency when the antenna detects a moving object, and divides the space based on a point at which the intensity of the radio beam transmitted to the detection area is halved. Each cell can be formed.

The target matrix may be generated as a matrix corresponding to a plurality of cells of the detection area so as to store signal values of each cell of the detection area.

In the beam scanning analysis of the present invention, an operation position detection apparatus applying a weight analyzes a signal of a reflection frequency with respect to a radio frequency transmitted through an antenna, and divides the signal into a plurality of cells (l_m, where l and m are natural numbers). A detection region generator for generating a detection region; A first matrix generator for generating a target matrix (l_m) corresponding to the signal value of the propagation beam measured for each cell of the detection area and storing the signal value in a cell matching the target matrix; A second matrix generator for generating a weight matrix (n 가중치 n, n is a natural number equal to or less than l and m) for weighting signal values of each cell of the target matrix generated by the first matrix; And a detector configured to detect a cell having a maximum value among the result matrix to which the weight matrix is applied as an operation position of a target.

The second matrix generator may include: a first result calculator configured to calculate a result value by applying a median of the weight matrix to a target cell of the target matrix; And a second result calculator configured to calculate a result value by applying the peripheral value of the weight matrix to the neighboring cells of the target cell of the target matrix.

The second matrix generator, when each cell of the target matrix calculates a result value by applying the weighting matrix, the result value calculated by the first result calculator corresponding to the target cell of the target matrix and the first value A third result calculator for adding a result value calculated by the result calculator to calculate a final result value; And a fourth result calculator configured to generate the result matrix according to each final result value stored in each cell of the target matrix.

The target matrix may be divided into a cell existing at an edge of the target matrix, a cell existing at the outermost side except the edge, and a cell existing at the center except the edge and the outermost side.

An operation position detection apparatus applying a weight in the beam scanning analysis may assign an additional weight value to each signal value of a cell existing at the edge and a cell existing at the outermost side except the edge.

The detection area is a space for scanning the periphery of the object at the propagation frequency when the antenna detects a moving object, and divides the space based on a point at which the intensity of the radio beam transmitted to the detection area is halved. Each cell can be formed.

The target matrix may be generated as a matrix corresponding to a plurality of cells of the detection area to store signal values of each cell of the detection area, and the weight matrix may have a median of weights greater than an ambient value.

In the above-described method and apparatus for detecting a motion position by applying a weight in the beam scanning analysis proposed in the present invention, a signal of an actual operating position does not operate by applying a method that gives a weight less to a signal at a peripheral position than a signal at a target position. It is possible to compensate for the error of the signal generated by calculating larger than the signal of the position.

In addition, the motion position detection method and apparatus applying the weight in the beam scanning analysis proposed in the present invention, because it is not necessary to collect a signal for a long time by collecting the signal of the target area, weighting the signal to determine the position Fast scanning is possible.

1 is a view showing a schematic concept of the operation position detection to apply a weight in the beam scanning analysis of the present invention.
FIG. 2 is a block diagram illustrating an operation position detection apparatus applying weights in beam scanning analysis according to an embodiment of the present invention.
FIG. 3 is a detailed block diagram illustrating the second matrix generator of FIG. 2.
4 is a diagram illustrating a process of calculating a result matrix from a target matrix according to the present invention.
5 is a diagram illustrating a process of applying an additional weight value to a target matrix according to an embodiment of the present invention.
6 is a flowchart illustrating an operation position detection method of applying weights in beam scanning analysis according to an embodiment of the present invention.
7 to 9 are flowcharts illustrating in detail a method for detecting an operation position to which weights are applied in the beam scanning analysis of FIG. 6.

DETAILED DESCRIPTION OF THE INVENTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

The proposed technique divides the detection area into a plurality of cells by analyzing a signal of the reflected frequency using a Doppler effect, which is a phenomenon in which the frequency changes when a traveling wave is reflected from a moving object. A motion detection technique for generating weights by generating corresponding matrices.

1 is a view showing a schematic concept of the operation position detection to apply a weight in the beam scanning analysis of the present invention.

In the beam scanning analysis according to the present invention, the motion position detection apparatus applying weights analyzes a small signal generated around the position where the motion of the object occurs by overlapping the propagation beam by a certain ratio, and the closer to the position where the motion of the object occurs Since the generated signal value is large, it is possible to more accurately determine the position where the motion of the object occurred.

For example, if the value of the signal received at the position where the actual motion is detected has a magnitude of '9', and the value of the signal received at the right position of the position where the actual motion is detected has a magnitude of '10', It can be assumed that it has occurred.

In this case, the values of the signal received around the position ('9') where the actual operation occurred have a larger signal overall than the values of the signal present around the value ('10') of the signal received on the right side of the actual position. Therefore, the error of the signal generated by using the weighting method proposed by the present invention can be compensated. [0047] An operation position detecting apparatus applying weights in the beam scanning analysis may be a separate terminal or a partial module of the terminal. That is, the operation position detection device to which the weight is applied in the beam scanning analysis may be configured in the radar or antenna system to control the phase of the radar or antenna that transmits and receives the frequency, or may be configured as a separate device from the radar or antenna system. It can also be used to remotely control the phase of the radar or antenna.

An operation position detection apparatus applying a weight in the beam scanning analysis may have mobility or may be fixed. The apparatus for detecting a position of the beam to which the weight is applied in the beam scanning analysis may be in the form of a server or an engine, and may be a device, an apparatus, a terminal, a user equipment, or an MS. It may be called other terms such as a mobile station, a wireless device, a handheld device, and the like.

FIG. 2 is a block diagram illustrating an operation position detection apparatus applying weights in beam scanning analysis according to an embodiment of the present invention.

Referring to FIG. 2, the apparatus 100 for detecting a motion position of a beam scanning analysis apparatus 100 according to an embodiment of the present invention may include a detection region generator 110, a first matrix generator 130, and a second matrix. The generator 150 and the detector 170 may be included.

The detection region generator 110 may receive a reflection frequency that is a frequency reflected from an object with respect to a radio frequency transmitted through an antenna. The detection region may be generated by analyzing a signal of the received reflection frequency and dividing the region in which the radio frequency is transmitted by a plurality of cells (l_m, where l and m are natural numbers).

In this case, when the antenna detects a moving object, the detection area may be a space for scanning the periphery of the object at a propagation frequency, and the space is based on a point (-3 dB) at which the intensity of the propagation beam is half of the detection area. Each cell can be divided to form a number for each cell.

The first matrix generator 130 may generate a target matrix l_m corresponding to the signal value of the radio beam measured for each cell of the detection area, and in each cell of the generated target matrix, each cell of the detection area may be The received signal value may be stored in a cell matching the target matrix.

Here, the target matrix may be generated as a matrix corresponding to the plurality of cells of the detection area so as to store signal values of each cell of the detection area.

For example, if the detection area is a matrix of 4ⅹ5, the target matrix may be generated as a matrix of 4ⅹ5, and if the signal value received at the upper right of the detection area is '1', the upper right of the target matrix is assumed. '1' which is a received signal value can be stored.

In addition, the target matrix may distribute zones according to the position of each cell. For example, the cell may be divided into a cell existing at the edge of the target matrix, a cell existing at the outermost part except the edge, and a cell existing at the center except the edge and the outermost part.

Distributing the zones for each cell of the target matrix may be performed by applying additional weights to the cells that exist at the edges and the cells that exist at the outermost side except the edges, so that the number of weights may be less than that of other cells. The weight can be applied equally to other cells.

The second matrix generator 150 weights a signal matrix of each cell of the target matrix generated by the first matrix generator 130 (n 생성 n, n is a natural number equal to or less than l and m). Can be generated.

)이 주변값(

)보다 큰 값을 가질 수 있다. 예를 들어, 3ⅹ3 행렬의 가중치 매트릭스의 경우 중앙값(

)은 '1'의 값을 가질 수 있고, 주변값(

)은 '0.5'의 값을 가질 수 있다.Where the weight matrix is the median of the weights (

)

It can have a value greater than). For example, for the weight matrix of a 3ⅹ3 matrix, the median (

) Can have a value of '1', and the peripheral value (

) May have a value of '0.5'.

)에 따라 상기 결과 매트릭스를 생성할 수 있다.In addition, the weight matrix may sequentially apply the weight matrix to each cell of the target matrix. When each cell of the target matrix calculates a result due to the application of the weight matrix, each final result value stored in each cell of the target matrix (

), The result matrix can be generated.

The detector 170 may detect a cell having the maximum value among the resultant matrices to which the weight matrix generated by the second matrix generator 150 is applied as the operation position of the target.

Referring to FIG. 3, the second matrix generator 150 will be described in detail.

The second matrix generator 150 may include a first result calculator 151, a second result calculator 153, a third result calculator 155, and a fourth result calculator 157.

)을 적용하여 결과값을 산출할 수 있고, 제2 결과산출부(153)는 제1 결과산출부(151)에서 가중치 매트릭스를 적용한 목표 매트릭스의 목표셀의 주변셀들에 가중치 매트릭스의 주변값(

)을 적용하여 결과값을 산출할 수 있다.The first result calculator 151 may calculate the median value of the weight matrix in the target cell of the target matrix.

), And the second result calculator 153 calculates the peripheral value of the weight matrix in the neighboring cells of the target cell of the target matrix to which the weight matrix is applied in the first result calculator 151.

) Can be calculated.

)은 가중치 매트릭스의 주변값(

)보다 큰 수일 수 있고, 중앙값(

)을 둘러싼 주변값(

)의 열이 다수 개 존재하는 경우, 가중치 매트릭스의 셀이 외각에 존재할수록 값이 작아질 수 있다.Where the median of the weight matrix (

) Is the margin of the weight matrix (

Can be greater than), and the median (

Surroundings ()

When there are a plurality of columns, the value may be smaller as the cells of the weight matrix exist on the outer surface.

)이 '1'이라면 가중치 매트릭스의 주변값(

)은 '0.6'이 될 수 있고, 4ⅹ4 행렬의 가중치 매트릭스의 중앙값(

)이 '1'이라면 가중치 매트릭스의 중앙값(

)을 둘러싼 첫번째 주변값(

)은 '0.6'일 수 있고, 외각에 존재하는 주변값(

)은 '0.3'일 수 있다.For example, the median of the weight matrix of the 3ⅹ3 matrix (

) Is '1', the margin of the weight matrix (

) Can be '0.6', and the median (

) Is '1', the median of the weight matrix (

), The first marginal value (

) Can be '0.6', and the peripheral value (

) May be '0.3'.

Here, the first result calculator 151 and the second result calculator 153 may apply the weight matrix to each cell of the target matrix until the weight is applied to all cells of the target matrix.

)을 산출할 수 있고, 가중치 매트릭스가 적용된 목표 매트릭스의 모든 셀에 최종 결과값(

)을 산출할 때까지 반복 수행할 수 있다.The third result calculator 155 calculates the result value and the second result calculated by the first result calculator corresponding to the target cell of the target matrix when all cells of the target matrix are calculated due to the application of the weight matrix. The final result value (

), And the final result (

) Can be repeated until

)에 가중치 매트릭스의 중앙값(

)을 곱해주고, 목표셀의 가장 가까운 주변셀의 신호값(

)에는 가중치 매트릭스의 주변값(

)을 곱해준 값을 모두 더하여 산출할 수 있다.That is, the target cell is selected and the signal value (

) Is the median of the weight matrix (

) And multiply the signal value (

) Is the margin of the weight matrix (

It can be calculated by adding up all the products multiplied by).

Referring to FIG. 4, an embodiment of calculating the result matrix c by applying the weight matrix b to each cell of the target matrix a will be described.

The target matrix a in FIG. 4 is a 5 × 4 matrix, and the weight matrix b is a 3 × 3 matrix. The result matrix calculated from each target matrix and the weight matrix is shown in (c).

)인 '8'에 가중치 매트릭스의 중앙값(

)인 '1'을 곱해줄 수 있고, 주변셀의 신호값(

)인 '4, 7, 9'에는 가중치 매트릭스의 주변값(

)인 '0.6'을 곱해줄 수 있다.Assuming that the target cell of the target matrix is '8', the signal value of the target cell (

) Is the median of the weight matrix (

You can multiply by '1' which is the signal value of the neighboring cell (

), "4, 7, 9" contains the perimeter of the weight matrix (

) Can be multiplied by '0.6'.

)인 '8'에 가중치 매트릭스의 중앙값(

)인 '1'을 곱해준 결과는 8이 산출될 수 있고, 목표 매트릭스의 주변셀의 신호값(

)인 '4, 7, 9'에 가중치 매트릭스의 주변값(

)인 '0.6'을 곱해준 결과는 '2.4, 4.2, 5.4'가 산출될 수 있다.Signal value of target cell of target matrix

) Is the median of the weight matrix (

The result of multiplying '1', which is 8, is 8, and the signal value of the neighboring cell of the target matrix (

), The periphery of the weight matrix (

Multiplying '0.6' can yield '2.4, 4.2, and 5.4'.

From this, if we add all the calculated results to the target cell and neighboring cells (8 + (2.4 * 4) + (4.2 * 3) + (5.4 * 1)), the result matrix is confirmed to be calculated as (c) Can be.

)을 산출할 수 있다.As described above, when all cells of the target matrix are calculated as the result value is applied by applying the weight matrix, the third result calculator 155 calculates the result value and the target matrix calculated by the first result calculator corresponding to the target cell of the target matrix. The final result value is obtained by adding the result value calculated by the second result calculator corresponding to the neighboring cell of

) Can be calculated.

)에 가중치 매트릭스의 중앙값(

)을 곱해주고, 목표셀의 가장 가까운 주변셀의 신호값(

)에는 가중치 매트릭스의 주변값(

)을 곱해주고, 주변셀의 신호값(

)에 가중치 매트릭스의 중앙값(

)과 목표 매트릭스와 검출 영역의 비율 상수(R)와 목표 매트릭스에 존재하는 주변셀의 개수(

)를 검출 영역에 존재하는 주변셀의 개수(

)를 나눈 값을 곱해준 뒤, 곱한 값을 모두 더해주면 최종 결과값(

)이 산출될 수 있다.That is, as shown in [Equation 1], the target cell is selected, and the signal value present in the target cell (

) Is the median of the weight matrix (

) And multiply the signal value (

) Is the margin of the weight matrix (

) And multiply the signal value

) Is the median of the weight matrix (

), The ratio constant (R) of the target matrix and the detection area, and the number of neighboring cells in the target matrix (

) Is the number of neighboring cells in the detection area (

Multiply by), then add all of them up to the final result (

) Can be calculated.

[Equation 1]

=

*

+

*

=

*

+

*

Referring to FIG. 5, an embodiment in which an additional weight value is applied to each signal value of a cell existing at an edge and a cell existing at an outermost portion except the edge will be described.

Based on the target matrix (a) of FIG. 5, the cells existing at the corners of the target matrix (a) may be '1, 5, 16, 20', and the cells existing at the outermost side except the edges are '2'. , 3, 4, 6, 10, 11, 15, 17, 18, 19 ', and cells in the center except corners and outermost cells can be' 7, 8, 9, 12, 13, 14 ' have.

) 또는 주변값(

)이 적용되는 횟수가 적어질 수 있기 때문에 추가적으로 가중치를 적용해줄 수 있다.If the weight matrix (b) is assigned to the target matrix (a), the median value of the weight is included in the outermost cell except the edge and the edge (

) Or margin (

) Can be applied more weighted because the number of times that the) is applied may be less.

) '1'은 {(1*1)+(4*0.6)+(7*0.6)+(4*0.6)}이 더해진 값인 10으로 산출될 수 있다. 이로부터, 오차의 범위를 줄이기 위하여 추가로 더해져야 할 가상의 셀들을 실제 주변셀의 신호값(

)들의 반(

)과 가상의 셀을 고려하여 곱해줄 수 있다.For example, the signal value of the target cell of the target matrix (a) before applying the additional weight (

) '1' may be calculated as 10, which is a value obtained by adding {(1 * 1) + (4 * 0.6) + (7 * 0.6) + (4 * 0.6)}. From this, the virtual cells to be added in order to reduce the error range are added to the signal values of the actual neighboring cells.

Half of

) And the virtual cell can be multiplied.

)이 적용되어야 하는데, 가중치 매트릭스의 주변값(

)이 적용되기 위한 목표 매트릭스(a)의 셀이 존재하지 않는 셀을 의미할 수 있다.Here, the imaginary region means the median value of the weight matrix (b) when a cell existing at the edge of the target matrix (a) is designated as the target cell.

) Should be applied to the margin of the weight matrix (

) May mean a cell in which the cell of the target matrix (a) does not exist.

)에 가중치 매트릭스(b)의 주변값(

)을 곱하여 더해주고, 산출된 최종 결과값(

)의 반과 목표 매트릭스(a)의 모서리 셀을 목표셀로 설정하였을 때 발생하는 가상셀의 개수(

)와 실제셀의 개수(

)를 고려하여 최종 결과값(

)을 산출할 수 있다.That is, as shown in [Equation 2], the signal value of the peripheral cell of the target matrix (a)

) Is the peripheral value of the weight matrix (b)

Multiply by) and get the final result (

The number of virtual cells generated when setting the half of) and the edge cell of the target matrix (a) as the target cell (

) And the actual number of cells (

), Taking into account the final result (

) Can be calculated.

[Equation 2]

) =

*

+

*

+

*

* R*

The final result (

) =

*

+

*

+

*

* R *

) '1'인 경우를 예로 들어 계산하면 아래 [수학식 3]과 같이 최종 결과값(

)이 산출되는 것을 확인할 수 있다.The signal value of the target cell described above using Equation 2

) If '1' is calculated as an example, the final result value as shown in [Equation 3] below (

Can be calculated.

[Equation 3]

) = (1*1)+{(4*0.6)+(7*0.6)+(4*0.6)}+{(4*0.6)+(7*0.6)+(4*0.6)}*0.5*

The final result (

) = (1 * 1) + {(4 * 0.6) + (7 * 0.6) + (4 * 0.6)} + {(4 * 0.6) + (7 * 0.6) + (4 * 0.6)} * 0.5 *

= 17.5

Hereinafter, an operation position detection method of applying weights in beam scanning analysis will be described in detail with reference to FIGS. 6 to 9.

6 is a flowchart illustrating an operation position detection method of applying weights in beam scanning analysis according to an embodiment of the present invention.

Referring to FIG. 6, an operation position detection method for applying a weight in a beam scanning analysis according to an embodiment of the present invention may receive a reflection frequency that is a frequency reflected from an object with respect to a radio wave frequency transmitted through an antenna. In operation S1000, the signal of the received reflection frequency may be analyzed, and the detection area may be generated by dividing the area in which the reflection frequency is received into a plurality of cells (l_m, where l and m are natural numbers) (S1100).

The propagation beam may be sequentially transmitted to each cell in which the detection area is divided (S1300), and a signal value received for the transmitted propagation beam may be stored in a cell matching the target matrix (S1500).

Here, the target matrix may be generated as a matrix corresponding to the plurality of cells of the detection area so as to store signal values of each cell of the detection area.

In addition, the target matrix may distribute zones according to the position of each cell. For example, the cell may be divided into a cell existing at the edge of the target matrix, a cell existing at the outermost part except the edge, and a cell existing at the center except the edge and the outermost part.

)이 주변값(

)보다 큰 값을 가질 수 있다. 예를 들어, 3ⅹ3 행렬의 가중치 매트릭스의 경우 중앙값(

)은 '1'의 값을 가질 수 있고, 주변값(

)은 '0.5'의 값을 가질 수 있다.A weight matrix (nⅹn, n is a natural number equal to or less than l and m) for applying to the target matrix may be generated and applied to the signal value of each cell of the target matrix (S1700). Where the weight matrix is the median of the weights (

)

It can have a value greater than). For example, for the weight matrix of a 3ⅹ3 matrix, the median (

) Can have a value of '1', and the peripheral value (

) May have a value of '0.5'.

)이 산출되면, 산출된 최종 결과값(

)을 이용하여 결과 매트릭스를 생성할 수 있고, 생성한 결과 매트릭스의 셀 중 최대값을 가지는 셀을 타겟으로 검출할 수 있다(S1900).The weight matrix is applied to all cells in the target matrix, giving the final result (

) Is calculated, the final result calculated (

), A result matrix may be generated, and a cell having a maximum value among cells of the generated result matrix may be detected as a target (S1900).

)은 가중치 매트릭스가 적용된 목표 매트릭스의 모든 셀에 최종 결과값(

)을 산출할 때까지 반복 수행할 수 있다.Here, the weight matrix may be sequentially applied until the weight is applied to all cells of the target matrix, and the final result value (

) Is the final result (

) Can be repeated until

Referring to FIG. 7, a description will be given of determining the detection area from the reflection frequency received through the antenna.

Receiving a reflection frequency that is a frequency reflected from an object with respect to a radio frequency transmitted through an antenna (S1000), a signal of the received reflection frequency can be analyzed (S1010), and the change of the moving object from the analyzed reflection frequency When the frequency is detected, the detection area may be divided into a plurality of cells (S1100).

In this case, when the antenna detects a moving object, the detection area may be a space for scanning the periphery of the object at a propagation frequency, and the space is based on a point (-3 dB) at which the intensity of the propagation beam is half of the detection area. Each cell can be divided to form a number for each cell.

Referring to FIG. 8, the generation of the target matrix will be described.

After dividing the detection area into a plurality of cells, the propagation beam may be sequentially transmitted to each divided cell (S1300), and the target matrix is a target matrix matched to each divided cell to store signal values received from each cell. It may be generated (S1350).

The target matrix l_m may be generated as a matrix corresponding to the detection region l_m divided into a plurality of cells so that the signal value of each cell of the detection region may be stored.

For example, if the detection area is a matrix of 3ⅹ5, the target matrix may be generated as a matrix of 3ⅹ5, and if the signal value received at the upper right of the detection area is '1', the upper right of the target matrix '1' which is a received signal value can be stored.

In addition, the target matrix may distribute zones according to the position of each cell. For example, the cell may be divided into a cell existing at the edge of the target matrix, a cell existing at the outermost part except the edge, and a cell existing at the center except the edge and the outermost part.

Distributing the zones for each cell of the target matrix may be performed by applying additional weights to the cells that exist at the edges and the cells that exist at the outermost side except the edges, so that the number of weights may be less than that of other cells. The weight can be applied equally to other cells.

)을 산출하는 것에 대하여 설명하기로 한다.9, the final result value of each cell of the target matrix (

) Will be described.

A weight matrix may be generated to be applied to cells of the target matrix, and the generated weight matrix may be applied to signal values of each cell of the target matrix (S1700).

)을 목표 매트릭스의 목표셀에 적용하여 결과값을 산출할 수 있고(S1710), 가중치 매트릭스의 주변값(

)은 목표 매트릭스의 목표셀의 주변셀들에 적용하여 결과값은 산출할 수 있다(S1730).Here, applying the weighting matrix to the cells of the target matrix is the median of the weighting matrix (

) May be applied to the target cell of the target matrix to calculate a result value (S1710), and the peripheral value of the weight matrix (

) May be applied to the neighboring cells of the target cell of the target matrix (S1730).

In addition, applying the weighting matrix to the cells of the target matrix, the weighting matrix may be applied sequentially until all the cells of the target matrix are weighted,

)을 더하여 최종 결과값(

)을 산출할 수 있고(S1750), 산출된 최종 결과값(

)에 따라 결과 매트릭스를 생성할 수 있다(S1770).After each weight matrix is applied to each cell of the target matrix, the peripheral value of each cell and the target cell (

) Plus the final result (

) Can be calculated (S1750), and the calculated final result value (

), A result matrix can be generated (S1770).

)은 가중치 매트릭스가 적용된 목표 매트릭스의 모든 셀에 최종 결과값을 산출할 때까지 반복 수행할 수 있다.Where the final result (

) May be repeated until the final result is calculated for all cells of the target matrix to which the weight matrix is applied.

As described above, according to the present invention, since the motion position detection method applying weights in the beam scanning analysis collects signals of the target area and weights the signals to determine the position, a longer collection time is not required. Scanning can be faster.

As described above, a technique for providing an operation position detection method applying weights in beam scanning analysis can form a radio beam by forming a plurality of antennas to increase a detection area and a distance, By performing beam scanning, a radar system capable of identifying the position of an operation in the surveillance region may be realized.

Although the present invention has been described in detail through the representative embodiments above, those skilled in the art will understand that various modifications are possible within the scope of the present invention without departing from the scope of the present invention. will be. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by all changes or modifications derived from the claims and the equivalent concepts as well as the following claims.

100: motion position detection device to apply a weight in the beam scanning analysis
110: detection area generation unit
130: first matrix generator
150: second matrix generator
151: first result calculation unit
153: second result calculation unit
155: third result calculation unit
157: fourth outcome calculation unit
170: detector

Claims (14)

Analyzes the signal of the reflected frequency with respect to the radio frequency transmitted through the antenna and divides the detection area into a plurality of cells (lⅹm, where l and m are natural numbers),
Sequentially transmits a propagation beam to each cell of the detection area,
Storing the signal value of the propagation beam measured for each cell of the detection area in each cell corresponding to the target matrix lⅹm,
Generating a weighting matrix (nⅹn, where n is a natural number equal to or less than l and m) having a median value greater than an ambient value, and applying the weighting matrix to signal values of each cell of the target matrix;
And detecting a cell having a maximum value as a result of applying the weight matrix as an operation position of a target.
The method of claim 2,
Applying the weight matrix to the signal value of each cell of the target matrix,
The median value of the weight matrix is applied to the target cell of the target matrix to calculate a result value.
The peripheral value of the weight matrix is applied to the neighboring cells of the target cell of the target matrix to calculate a result value, the operation position detection method for applying the weight in the beam scanning analysis.
The method of claim 2,
Detecting the cell having the maximum value in the result matrix as the operation position of the target,
If each cell of the target matrix is calculated as a result of applying the weight matrix, the final result is calculated by adding the peripheral values of each cell and the target cell,
And generating a result matrix according to each final result stored in each cell of the target matrix to detect an operation position.
The method of claim 1,
The target matrix,
And a cell which is divided into a cell existing at an edge of the target matrix, a cell existing at the outermost part except the corner, and a cell existing at the center except the corner and the outermost part.
The method of claim 4, wherein
And an additional weight value is assigned to each signal value of the cell existing at the edge and the cell existing at the outermost side except the edge.
The method of claim 1,
The detection area,
When the antenna detects a moving object, it is a space for scanning the periphery of the object at the radio wave frequency,
And forming a cell by dividing a space based on a point at which the intensity of the radio beam transmitted to the detection region is halved.
The method of claim 1,
The target matrix,
And generating a matrix corresponding to a plurality of cells of the detection area so as to store signal values of each cell of the detection area.
A detection region generator for analyzing a signal of a reflection frequency with respect to a radio frequency transmitted through an antenna, and generating a detection region by dividing the signal into a plurality of cells (l_m, where l and m are natural numbers);
A first matrix generator for generating a target matrix (l_m) corresponding to the signal value of the propagation beam measured for each cell of the detection area and storing the signal value in a cell matching the target matrix;
A second matrix generator for generating a weight matrix (n 가중치 n, n is a natural number equal to or less than l and m) for weighting signal values of each cell of the target matrix generated by the first matrix;
And a detector which detects a cell having a maximum value among the resultant matrices as an operation position of a target. 2.
The method of claim 8,
The second matrix generator,
A first result calculator configured to apply a median value of the weight matrix to a target cell of the target matrix to calculate a result value; And
And a second result calculator configured to apply a peripheral value of the weight matrix to peripheral cells of the target cell of the target matrix to calculate a result value.
The method of claim 9,
The second matrix generator,
When a result value is calculated for each cell of the target matrix by applying the weight matrix, the result value calculated by the first result calculator corresponding to the target cell of the target matrix and the second result calculator are calculated. A third result calculator for adding a result value to calculate a final result value; And
And a fourth result calculator configured to generate the result matrix according to each final result value stored in each cell of the target matrix.
The method of claim 8,
The target matrix,
And a cell which is divided into a cell existing at an edge of the target matrix, a cell existing at the outermost part except the corner, and a cell existing at the center except the corner and the outermost part.
The method of claim 11,
And an additional weight value is assigned to each signal value of the cell existing at the edge and the cell existing at the outermost side except the edge.
The method of claim 8,
The detection area,
When the antenna detects a moving object, it is a space for scanning the periphery of the object at the radio wave frequency,
And forming a cell by dividing a space based on a point at which the intensity of the radio beam transmitted to the detection region is halved.
The method of claim 8,
The target matrix is generated as a matrix corresponding to a plurality of cells of the detection area to store signal values of each cell of the detection area,
The weight matrix is a motion position detection device for applying a weight in the beam scanning analysis, the median of the weight having a value larger than the peripheral value.

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