KR102186598B1 - Gate management system and gate management method therefor - Google Patents

Abstract

The access management system includes a plurality of antennas for receiving radio signals; And a first angle that is a signal reception angle of two antennas included in a first antenna group among the plurality of antennas, and a second angle that is a signal reception angle of two antennas included in a second antenna group among the plurality of antennas. It includes; an angle calculation unit.

Description

Access control system and its access control method {GATE MANAGEMENT SYSTEM AND GATE MANAGEMENT METHOD THEREFOR}

The present invention relates to an access management system and an access management method thereof, and more particularly, to an access management system capable of performing access management by processing a signal received by wireless communication, and an access management method thereof.

In an access management system for access control of an apartment, building, or office, a wireless communication method such as an RFID method or an NFC method is used.

In the case of a general access management system based on a wireless method, the strength of a signal received by a receiver varies according to the strength of a signal from a transmitter, so the distance between the door and the door opening and closing the door may vary depending on the transmitter. Accordingly, in the case of a general access management system, it is difficult to control the opening and closing of the door when the distance between the door and the door is not accurately known, and when the distance between the door and the door reaches a certain distance.

Korean Patent Publication No. 10-2015-0033121: Visitor location management system and its management method (published on April 1, 2015).

The present invention is an invention aimed at solving the technical problem as described above, and an object thereof is to provide an access management system capable of accurately grasping the distance between an entrance and an entrance door, and an access management method thereof.

The access management system of the first and second embodiments of the present invention includes a plurality of antennas for receiving radio signals; And a first angle that is a signal reception angle of two antennas included in a first antenna group among the plurality of antennas, and a second angle that is a signal reception angle of two antennas included in a second antenna group among the plurality of antennas. It includes; an angle calculation unit.

In addition, the access management systems of the first and second embodiments of the present invention further include a distance calculating unit that calculates a distance between the door and the person entering.

In addition, the angle calculation unit of the second embodiment of the present invention includes a third angle, which is a signal reception angle of two antennas included in a third antenna group among the plurality of antennas, and a fourth antenna group among the plurality of antennas. A fourth angle, which is a signal reception angle of two antennas, is further calculated, and the directivity of the antennas included in the first antenna group and the second antenna group is the same, and included in the third antenna group and the fourth antenna group. The directivity of the antenna is the same, and the directivity of the antennas included in the first antenna group and the third antenna group are different from each other.

In addition, the distance calculation unit of the first and second embodiments of the present invention includes: the first angle; The second angle; And a distance between the first antenna group and the second antenna group. It is preferable to calculate a distance between the door and the person.

In addition, the angle calculation units of the first and second embodiments of the present invention include a received signal from an antenna 1-1, which is one of two antennas included in the first antenna group, and 2 included in the first antenna group. A phase difference of the received signal of the second antenna, which is another one of the antennas; A distance between the 1-1 antenna and the 1-2 antenna; And a wavelength of a signal received by the 1-1 antenna and the 1-2 antenna. The first angle is calculated using the.

In addition, a distance between the first antenna group and the second antenna group is 10 times greater than a distance between the 1-1 antenna and the 1-2 antenna.

The access control method of the first and second embodiments of the present invention includes: a first angle calculation step of calculating a first angle, which is a signal reception angle of two antennas included in a first antenna group among a plurality of antennas; And a second angle calculation step of calculating a second angle, which is a signal reception angle of two antennas included in the second antenna group among the plurality of antennas.

In addition, the access management method of the first and second embodiments of the present invention may further include a distance calculation step of calculating a distance between the door and the person entering.

In addition, the access management method according to the second embodiment of the present invention includes: calculating a third angle, which is a signal reception angle of two antennas included in a third antenna group among the plurality of antennas; And a fourth angle calculating step of calculating a fourth angle, which is a signal reception angle of two antennas included in a fourth antenna group among the plurality of antennas, and further comprising, in the first antenna group and the second antenna group. The directivity of the included antennas is the same, the directivity of the antennas included in the third antenna group and the fourth antenna group are the same, and the directivity of the antennas included in the first antenna group and the third antenna group are different from each other. It features.

In addition, the distance calculation step of the first and second embodiments of the present invention includes: the first angle; The second angle; And a distance between the first antenna group and the second antenna group, to calculate a distance between the door and the person.

The first angle calculation step of the first and second embodiments of the present invention includes a received signal from an antenna 1-1, which is one of two antennas included in the first antenna group, and a signal included in the first antenna group. A phase difference of the received signal of the second antenna, the other of the two antennas; A distance between the 1-1 antenna and the 1-2 antenna; And a wavelength of a signal received by the 1-1 antenna and the 1-2 antenna. It is preferable to calculate the first angle.

In addition, a distance between the first antenna group and the second antenna group is 10 times greater than a distance between the 1-1 antenna and the 1-2 antenna.

According to the access management system and the access control method of the present invention, it is possible to accurately determine the distance between the person and the door.

1 is a block diagram of an access management system according to a first embodiment of the present invention.
2 is an explanatory diagram of a method of calculating a phase difference between received signals received by two antennas located at close distances.
3 is an explanatory diagram illustrating a method of calculating a reception angle using a phase difference.
4 is an explanatory diagram of a distance calculation method by a distance calculation unit.
5 is a block diagram of an access management system according to a second embodiment of the present invention.

Hereinafter, an access management system and an access management method thereof according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It goes without saying that the following examples of the present invention are intended to embody the present invention, and do not limit or limit the scope of the present invention. What can be easily inferred by experts in the technical field to which the present invention pertains from the detailed description and examples of the present invention is interpreted as belonging to the scope of the present invention.

First, FIG. 1 shows a configuration diagram of an access management system 100 according to a first embodiment of the present invention.

As can be seen from FIG. 1, the access management system 100 according to the first embodiment of the present invention includes a transmission unit 110, a reception unit 120, an angle calculation unit 130, a distance calculation unit 140, and It includes a control signal generator 150.

The transmission unit 110 may use a wireless communication transmission module mounted on a terminal, a card, or the like possessed by the person entering. That is, the receiving unit 120 receives the wireless signal of the terminal possessed by the visitor.

In addition, the receiving unit 120 includes a plurality of antennas and receives radio signals from the transmitting unit 110.

It is preferable that the plurality of antennas include a first antenna group GA1 and a second antenna group GA2, in which two of them form an antenna group in pairs. In addition, a plurality of antennas, characterized in that it is mounted on the door.

In addition, the 1-1 antenna A11 and the 1-2 antenna A12 included in the first antenna group GA1 need to be located at a very close distance. Similarly, the 2-1 antenna A21 and the 2-2 antenna A22 included in the second antenna group GA2 need to be located at a very close distance.

In addition, it is preferable that the distance between the first antenna group GA1 and the second antenna group GA2 is much longer than the distance between antennas included in the same antenna group. For example, the distance between the first antenna group GA1 and the second antenna group GA2 is 10 times greater than the distance between the 1-1 antenna A11 and the 1-2 antenna A12. To do. Similarly, the distance between the first antenna group GA1 and the second antenna group GA2 is preferably 10 times greater than the distance between the 2-1 antenna A21 and the 2-2 antenna A22.

The angle calculation unit 130 may use a local device located near the entrance door. That is, the angle calculation unit 130 may use a local terminal. Specifically, the angle calculation unit 130 may use a processor of a local terminal.

Specifically, the angle calculation unit 130 includes a first angle that is a signal reception angle of two antennas included in the first antenna group GA1 and a signal reception angle of two antennas included in the second antenna group GA2 It is characterized in that the second angle is calculated.

FIG. 2 is an explanatory diagram illustrating a method of calculating a phase difference between received signals received from two antennas located at close distances.

In addition, the reception signal S(1-1) received from the 1-1 antenna A11 and the reception signal S(1-2) received from the 1-2 antenna A12 are each a complex signal, and I(In It can be expressed as the following [Equation 1] and [Equation 2] by the -phase) signal and the Q (quadrature phase) signal.

At this time, the S(1-1) signal and the S(1-2) signal are phase difference Ψ(1) due to a distance difference between the transmission unit 110 of the 1-1 antenna A11 and the 1-2 antenna A12. ) Occurs. The phase difference Ψ(1) is the difference between the vector values of the S(1-1) signal and the S(1-2) signal and can be calculated using the S(1-1) signal and the S(1-2) signal. have.

3 is an explanatory diagram illustrating a method of calculating a reception angle using a phase difference.

At this time, the first angle θ(1), which is a reception angle, may be expressed as an angle at the position of the 1-1 antenna A11. At this time, when the distance r between the P1 and the 1-1 antenna A11, the relationship as shown in [Equation 3] is established. P1 is a point where a vertical line passing through the 1-1 antenna A11 meets a line forming a first angle, and a horizontal line passing through the 1-2 antenna A12 and a line forming a first angle.

In [Equation 3], λ is the wavelength of the received signal, and d is the distance between the 1-1 antenna A11 and the 1-2 antenna A12.

For reference, the distance between the 1-1 antenna A11 and the 1-2 antenna A12 is equal to the distance between the 1-1 antenna A11 and the 1-2 antenna A12 and the transmitter 110 Since it is extremely short, it is assumed that the 1-1 antenna A11 and the 1-2 antenna A12 receive signals at a first angle that is the same reception angle. That is, the signal reception angles of the 1-1 antenna A11 and the 1-2 antenna A12 are substantially the same.

Accordingly, the first angle θ(1), which is a reception angle, may be calculated as shown in [Equation 4] below.

That is, the angle calculation unit 130 includes a received signal from the first antenna A11, which is one of the two antennas included in the first antenna group GA1, and the two antennas included in the first antenna group GA1. A phase difference of the received signal from the second antenna A12, which is another one of the antennas; A distance between the 1-1 antenna A11 and the 1-2 antenna A12; And a wavelength of a signal received by the 1-1 antenna A11 and the 1-2 antenna A12. The first angle may be calculated.

Similarly, the angle calculation unit 130 includes a received signal from the 2-1 antenna A21, which is one of the two antennas included in the second antenna group GA2, and the two antennas included in the second antenna group GA2. A phase difference of the received signal of the second antenna A22, which is the other one of the antennas; A distance between the 2-1 antenna A21 and the 2-2 antenna A22; And wavelengths of the signals received by the 2-1 antenna A21 and the 2-2 antenna A22, the second angle may be calculated.

However, the wavelength of the signal received by the 1-1 antenna A11 and the 1-2 antenna A12 and the wavelength of the signal received by the 2-1 antenna A21 and the 2-2 antenna A22 are , Is the same because the signal from the same transmitter 110 is used.

The distance calculating unit 140 may use a remote computing device located at a distance from the entrance door. That is, the distance calculation unit 140 may use a server.

However, the angle calculation unit 130 and the distance calculation unit 140 may use the same device. That is, both the angle calculation unit 130 and the distance calculation unit 140 may be implemented using a local terminal or a server. Specifically, both the angle calculation unit 130 and the distance calculation unit 140 may use a processor of a local terminal or a processor of a server.

The distance calculation unit 140 serves to calculate the distance between the entrance door and the person using the first angle and the second angle.

4 is an explanatory diagram of a method for calculating a distance by the distance calculating unit 140.

The distance calculating unit 140 may include a first angle; Second angle; And a distance between the first antenna group GA1 and the second antenna group GA2; the distance between the entrance door and the person entering is calculated.

The distance between the first antenna group GA1 and the second antenna group GA2 is from the center positions of the 1-1 antenna A11 and the 1-2 antenna A12 to the 2-1 antenna A21 and the second antenna group. 2-2 The distance between the center positions of the antenna A22 can be used. Alternatively, the distance between the first antenna group GA1 and the second antenna group GA2 may be a distance between the 1-1 antenna A11 and the 2-1 antenna A21; Alternatively, a distance between the 1-2th antenna A12 and the 2-2nd antenna A22 may be used.

A distance between the 1-1 antenna A11 and the 1-2 antenna A12 from the transmission unit 110; Alternatively, the distance between the 2-1 antenna A21 and the 2-2 antenna A22 from the transmission unit 110; is the distance between the 1-1 antenna A11 and the 1-2 antenna A12 ; Alternatively, the distance between the 2-1 antenna A21 and the 2-2 antenna A22 is much longer than that between the 1-1 antenna A11 and the 1-2 antenna A12; Alternatively, the distance between the 2-1 antenna A21 and the 2-2 antenna A22 is a very small value. Therefore, when calculating the distance between the door and the person entering, the first antenna group GA1 and the second antenna group GA2 are based on a certain position from the 1-1 antenna A11 to the 1-2 antenna A12. Even if the distance between) is calculated, the difference in the distance between the door and the person is insignificant. Similarly, when calculating the distance between the door and the person entering, the first antenna group GA1 and the second antenna group GA2 are based on a certain position from the 2-1 antenna A21 to the 2-2 antenna A22. Even if the distance between) is calculated, the difference in the distance between the door and the person is insignificant.

When the point where the straight line connecting the first antenna group GA1 and the second antenna group GA2 meets the vertical line passing through the transmitter 110 is P2, the distance between the first antenna group GA1 and P2 is x, The distance between the second antenna group GA2 and P2 is y.

In addition, when the distance between the door and the entrance is M, the first angle θ(1) and the second angle θ(2) and M have the same relationship as the following [Equation 5] and [Equation 5]. .

When L is the distance between the first antenna group GA1 and the second antenna group GA2, L may be expressed as Equation 7 below.

Therefore, the distance M between the entrance door and the person entering can be expressed as the following [Equation 8].

The control signal generator 150 serves to generate a control signal for opening the door when the distance between the door and the person is less than a preset value. The control signal generation unit 150 may be implemented using the same local terminal or server as the distance calculation unit 140.

5 shows a configuration diagram of an access management system 200 according to a second exemplary embodiment of the present invention.

As can be seen from FIG. 5, the access management system 200 according to the second exemplary embodiment of the present invention includes a transmission unit 210, a reception unit 220, an angle calculation unit 230, a distance calculation unit 240, and It includes a control signal generator 250.

The access management system 200 according to the second preferred embodiment of the present invention of FIG. 5 includes all the features of the access management system 100 according to the first preferred embodiment of the present invention, even if there is no separate description. have.

However, the access management system 200 according to the second preferred embodiment of the present invention is different from the access management system 100 according to the first preferred embodiment of the present invention in the following points.

The plurality of antennas included in the receiving unit 220 of the access management system 200 according to the second exemplary embodiment of the present invention are a third antenna group (GA3) and a fourth antenna group, in which two form an antenna group in pairs. It is preferable to further include (GA4).

In addition, the antennas included in the first antenna group GA1 and the second antenna group GA2 have the same directivity, and the antennas included in the third antenna group GA3 and the fourth antenna group GA4 have the same directivity. It is desirable. In addition, directivity of antennas included in the first antenna group GA1 and the third antenna group GA3 are different from each other. Specifically, the directivity of the antennas included in the first antenna group GA1 and the third antenna group GA3 is preferably 180 degrees apart.

Accordingly, the antennas included in the first antenna group GA1 and the second antenna group GA2 receive a signal from the transmitter 210 of the person entering the door, and the third antenna group GA3 and the third antenna group GA3 The antenna included in the 4 antenna group GA4 receives a signal from the transmitter 210 of the person entering the door when exiting the door. Alternatively, on the contrary, the antennas included in the third antenna group GA3 and the fourth antenna group GA4 receive a signal from the transmitter 210 of the person entering the door, and the first antenna group GA1 and the second antenna The antenna included in the 2 antenna group GA2 may receive a signal from the transmitter 210 of the person entering the door when leaving the door.

It is preferable that the third antenna group GA3 and the fourth antenna group GA4 are also mounted on the door.

In addition, the 3-1 antenna A31 and the 3-2 antenna A32 included in the third antenna group GA3 need to be located at a very close distance. Likewise, the 4-1 antenna A41 and the 4-2 antenna A42 included in the fourth antenna group GA4 need to be located at a very close distance.

In addition, it is preferable that the distance between the third antenna group GA3 and the fourth antenna group GA4 is much longer than the distance between antennas included in the same antenna group. For example, the distance between the third antenna group GA3 and the fourth antenna group GA4 is 10 times greater than the distance between the 3-1 antenna A31 and the 3-2 antenna A32. To do. Similarly, the distance between the third antenna group GA3 and the fourth antenna group GA4 is preferably 10 times or more larger than the distance between the 4-1 antenna A41 and the 4-2 antenna A42.

In addition, the angle calculation unit 230 is included in the third angle and the fourth antenna group GA4, which are signal reception angles of the two antennas included in the third antenna group GA3, in addition to the first angle and the second angle. It is necessary to further calculate a fourth angle, which is the signal reception angle of the two antennas.

That is, the angle calculation unit 230 includes a received signal from the 3-1 antenna A31, which is one of the two antennas included in the third antenna group GA3, and the two antennas included in the third antenna group GA3. A phase difference of the received signal from the 3-2 antenna A32, which is another one of the antennas; A distance between the 3-1 antenna A31 and the 3-2 antenna A32; And wavelengths of the signals received by the 3-1 antenna A31 and the 3-2 antenna A32, the third angle may be calculated. Similarly, the angle calculation unit 230 includes a received signal of the 4-1 antenna A41, which is one of the two antennas included in the fourth antenna group GA4, and the two antennas included in the fourth antenna group GA4. A phase difference of the received signal of the 4-2th antenna A42, which is another one of the antennas; A distance between the 4-1 antenna A41 and the 4-2 antenna A42; And wavelengths of the signals received by the 4-1 antenna A41 and the 4-2 antenna A42, the fourth angle may be calculated.

In addition, the distance calculating unit 240, the third angle; Fourth angle; And a distance between the third antenna group GA3 and the fourth antenna group GA4; the distance between the entrance door and the person entering may be calculated.

The distance between the third antenna group GA3 and the fourth antenna group GA4 is from the center positions of the 3-1 antenna A31 and the 3-2 antenna A32 to the 4-1 antenna A41 and the fourth antenna group. 4-2 The distance between the center positions of the antenna A42 can be used. Alternatively, the distance between the third antenna group GA3 and the fourth antenna group GA4 may be a distance between the 3-1 antenna A31 and the 4-1 antenna A41; Alternatively, a distance between the 3-2 antenna A32 and the 4-2 antenna A42 may be used.

According to the access management system 200 according to the second preferred embodiment of the present invention, it is possible to determine whether a person entering or leaving by using antenna groups having a directivity in the opposite direction. That is, when the distance between the door and the person is not calculated according to the first angle and the second angle, whereas the distance between the door and the person is calculated according to the third and fourth angles, it is a case where the person leaves. Can be identified.

Hereinafter, an access control method according to a first embodiment of the present invention will be described.

Since the access management method according to the first preferred embodiment of the present invention uses the access management system 100 according to the first preferred embodiment of the present invention described above, the first preferred embodiment of the present invention even if there is no description. Of course, it includes all the features of the access management system 100 according to.

In addition, the access management method according to the first preferred embodiment of the present invention is implemented in the form of a computer program executed by at least one processor included in the access management system 100 according to the first preferred embodiment of the present invention. Can be. That is, the access management method according to the first preferred embodiment of the present invention may be implemented by one processor or a plurality of processors.

An access management method according to a first exemplary embodiment of the present invention includes: a first angle calculation step of calculating a first angle, which is a signal reception angle of two antennas included in a first antenna group GA1 among a plurality of antennas; A second angle calculation step of calculating a second angle, which is a signal reception angle of two antennas included in the second antenna group GA2 among the plurality of antennas; A distance calculating step of calculating a distance between the door and the person entering; And a control signal generation step of generating a control signal for opening the door when the distance between the door and the person is less than a preset value.

In addition, the step of calculating the first angle includes a received signal from the first antenna A11, which is one of two antennas included in the first antenna group GA1, and two antennas included in the first antenna group GA1. A phase difference of the received signal of the second antenna A12, which is the other; A distance between the 1-1 antenna A11 and the 1-2 antenna A12; And a wavelength of a signal received by the 1-1 antenna A11 and the 1-2 antenna A12. The first angle may be calculated. In addition, the second angle calculation step may include a received signal from the 2-1 antenna A21, which is one of the two antennas included in the second antenna group GA2, and the two antennas included in the first antenna group GA1. A phase difference of the received signal of the second antenna A22, which is the other; A distance between the 2-1 antenna A21 and the 2-2 antenna A22; And a wavelength of a signal received by the 2-1 antenna A21 and the 2-2 antenna A22. The second angle may be calculated.

In addition, the distance between the first antenna group GA1 and the second antenna group GA2 is 10 times greater than the distance between the 1-1 antenna A11 and the 1-2 antenna A12. .

The distance calculating step may include a first angle; Second angle; And a distance between the first antenna group GA1 and the second antenna group GA2; the distance between the entrance door and the person entering may be calculated.

Hereinafter, an access control method according to a second exemplary embodiment of the present invention will be described.

In the access management method according to the second preferred embodiment of the present invention, since the above-described FIG. 1 uses the access management system 200 according to the second preferred embodiment of the present invention, the preferred third of the present invention It goes without saying that all the features of the access management system 200 according to the second embodiment are included.

In addition, the access management method according to the second preferred embodiment of the present invention is implemented in the form of a computer program executed by at least one processor included in the access management system 200 according to the second preferred embodiment of the present invention. Can be. That is, the access management method according to the second preferred embodiment of the present invention may be implemented by one processor or a plurality of processors.

An access management method according to a second preferred embodiment of the present invention includes: a first angle calculation step of calculating a first angle, which is a signal reception angle of two antennas included in a first antenna group GA1 among a plurality of antennas; A second angle calculation step of calculating a second angle, which is a signal reception angle of two antennas included in the second antenna group GA2 among the plurality of antennas; A third angle calculation step of calculating a third angle, which is a signal reception angle of two antennas included in the third antenna group GA3 among the plurality of antennas; And a fourth angle calculation step of calculating a fourth angle, which is a signal reception angle of two antennas included in the fourth antenna group GA4 among the plurality of antennas. A distance calculating step of calculating a distance between the door and the person entering; And a control signal generation step of generating a control signal for opening the door when the distance between the door and the person is less than a preset value.

In addition, the antennas included in the first antenna group GA1 and the second antenna group GA2 have the same directivity, and the antennas included in the third antenna group GA3 and the fourth antenna group GA4 have the same directivity. It is desirable. In addition, directivity of antennas included in the first antenna group GA1 and the third antenna group GA3 are different from each other. Specifically, the directivity of the antennas included in the first antenna group GA1 and the third antenna group GA3 is preferably 180 degrees apart.

In addition, the distance between the first antenna group GA1 and the second antenna group GA2 is 10 times greater than the distance between the 1-1 antenna A11 and the 1-2 antenna A12. .

In addition, the step of calculating the first angle includes a received signal from the first antenna A11, which is one of two antennas included in the first antenna group GA1, and two antennas included in the first antenna group GA1. A phase difference of the received signal of the second antenna A12, which is the other; A distance between the 1-1 antenna A11 and the 1-2 antenna A12; And a wavelength of a signal received by the 1-1 antenna A11 and the 1-2 antenna A12. The first angle may be calculated. In addition, the second angle calculation step may include a received signal from the 2-1 antenna A21, which is one of the two antennas included in the second antenna group GA2, and the two antennas included in the second antenna group GA2. A phase difference of the received signal of the second antenna A22, which is the other; A distance between the 2-1 antenna A21 and the 2-2 antenna A22; And a wavelength of a signal received by the 2-1 antenna A21 and the 2-2 antenna A22. The second angle may be calculated.

In the third angle calculation step, the received signal of the 3-1 antenna A31, which is one of the two antennas included in the third antenna group GA3, and the other of the two antennas included in the third antenna group GA3, A phase difference of the received signal of the 3-2 antenna A32; A distance between the 3-1 antenna A31 and the 3-2 antenna A32; And wavelengths of the signals received by the 3-1 antenna A31 and the 3-2 antenna A32, the third angle may be calculated. Similarly, in the fourth angle calculation step, the received signal of the 4-1 antenna A41, which is one of the two antennas included in the fourth antenna group GA4, and the two antennas included in the fourth antenna group GA4 A phase difference of the received signal of the other 4-2 antenna A42; A distance between the 4-1 antenna A41 and the 4-2 antenna A42; And wavelengths of the signals received by the 4-1 antenna A41 and the 4-2 antenna A42, the fourth angle may be calculated.

The distance calculating step may include a first angle; Second angle; And a distance between the first antenna group GA1 and the second antenna group GA2; the distance between the entrance door and the person entering may be calculated.

In addition, the distance calculating unit 240, the third angle; Fourth angle; And a distance between the third antenna group GA3 and the fourth antenna group GA4; the distance between the entrance door and the person entering may be calculated.

As described above, according to the access management systems 100 and 200 of the present invention and the access management method thereof, it can be seen that the distance between the entrance and the entrance door can be accurately recognized.

100, 200: access control system
110, 210: transmitter 120, 220: receiver
130, 230: angle calculation unit 140, 240: distance calculation unit
150, 250: control signal generator
GA1: first antenna group GA2: second antenna group
GA3: third antenna group GA4: fourth antenna group
A11: 1-1 antenna A12: 1-2 antenna
A21: 2-1 antenna A22: 2-2 antenna
A31: 3-1 antenna A32: 3-2 antenna
A41: 4-1 antenna A42: 4-2 antenna

Claims (18)

In the access management system,
A plurality of antennas for receiving radio signals;
Calculating a first angle that is a signal reception angle of two antennas included in a first antenna group among the plurality of antennas and a second angle that is a signal reception angle of two antennas included in a second antenna group among the plurality of antennas An angle calculation unit; And
Including; a distance calculation unit that calculates the distance between the door and the person entering,
The angle calculating unit may include a third angle, which is a signal reception angle of two antennas included in a third antenna group among the plurality of antennas, and a third angle, which is a signal reception angle of two antennas included in a fourth antenna group, among the plurality of antennas. 4 calculate more angles,
The antennas included in the first antenna group and the second antenna group have the same directivity, the third antenna group and the fourth antenna group have the same directivity, and the first antenna group and the second antenna group have the same directivity. 3 Access control system, characterized in that the directivity of the antennas included in the antenna group are different from each other. delete delete The method of claim 1,
The distance calculation unit,
The first angle;
The second angle; And
And calculating a distance between the door and the person by using the distance between the first antenna group and the second antenna group. The method of claim 1,
The angle calculation unit,
A phase difference between a received signal of a first antenna, which is one of two antennas included in the first antenna group, and a received signal of a second antenna, which is the other of two antennas included in the first antenna group;
A distance between the 1-1 antenna and the 1-2 antenna; And
And calculating the first angle by using the wavelengths of the signals received by the 1-1 antenna and the 1-2 antenna. The method of claim 5,
The distance between the first antenna group and the second antenna group is,
Access management system, characterized in that 10 times greater than the distance between the 1-1 antenna and the 1-2 antenna. In the access management system,
A first angle that is a signal reception angle of two antennas included in a first antenna group among a plurality of antennas for receiving a radio signal, and a second angle that is a signal reception angle of two antennas included in a second antenna group among the plurality of antennas. Calculate the angle,
Calculate the distance between the door and the person,
A third angle that is a signal reception angle of two antennas included in a third antenna group among the plurality of antennas and a fourth angle that is a signal reception angle of two antennas included in a fourth antenna group among the plurality of antennas are calculated, ,
The antennas included in the first antenna group and the second antenna group have the same directivity, the third antenna group and the fourth antenna group have the same directivity, and the first antenna group and the second antenna group have the same directivity. 3 Access management system, characterized in that the directivity of the antennas included in the antenna group are different from each other. delete delete The method of claim 7,
The access management system,
The first angle;
The second angle; And
And calculating a distance between the door and the person by using the distance between the first antenna group and the second antenna group. The method of claim 7,
The access management system,
A phase difference between a received signal of a first antenna, which is one of two antennas included in the first antenna group, and a received signal of a second antenna, which is the other of two antennas included in the first antenna group;
A distance between the 1-1 antenna and the 1-2 antenna; And
And calculating the first angle by using the wavelengths of the signals received by the 1-1 antenna and the 1-2 antenna. The method of claim 11,
The distance between the first antenna group and the second antenna group is,
Access management system, characterized in that 10 times greater than the distance between the 1-1 antenna and the 1-2 antenna. In the access management method using the access management system,
A first angle calculation step of calculating a first angle, which is a signal reception angle of two antennas included in the first antenna group among the plurality of antennas;
A second angle calculation step of calculating a second angle, which is a signal reception angle of two antennas included in a second antenna group among the plurality of antennas;
A third angle calculation step of calculating a third angle, which is a signal reception angle of two antennas included in a third antenna group among the plurality of antennas;
A fourth angle calculation step of calculating a fourth angle, which is a signal reception angle of two antennas included in a fourth antenna group among the plurality of antennas; And
Including; a distance calculation step of calculating the distance between the door and the entrance,
The antennas included in the first antenna group and the second antenna group have the same directivity, the third antenna group and the fourth antenna group have the same directivity, and the first antenna group and the second antenna group have the same directivity. 3 Access control method, characterized in that the directivity of the antennas included in the antenna group are different from each other. delete delete The method of claim 13,
The distance calculation step,
The first angle;
The second angle; And
And calculating a distance between the door and the person by using the distance between the first antenna group and the second antenna group. The method of claim 13,
The first angle calculation step,
A phase difference between a received signal of a first antenna, which is one of two antennas included in the first antenna group, and a received signal of a second antenna, which is the other of two antennas included in the first antenna group;
A distance between the 1-1 antenna and the 1-2 antenna; And
And calculating the first angle by using the wavelengths of signals received by the 1-1 antenna and the 1-2 antenna. The method of claim 17,
The distance between the first antenna group and the second antenna group is,
Access control method, characterized in that 10 times or more greater than the distance between the 1-1 antenna and the 1-2 antenna.

Images