KR20020041770A - Auto-direction selector for antenna - Google Patents

Abstract

PURPOSE: An automatic direction selector of an antenna and a control method thereof are provided to improve the tuning of a transmit frequency by using a driving unit for driving antenna in all directions. CONSTITUTION: A frequency receiving unit(10) is formed as a pin-shape and provided with radiating devices. A driving unit(20) moves the frequency receiving unit(10) to all directions. A frequency selector(31) picks out a frequency of a predetermined frequency band by the frequency receiving unit(10) to convert the frequency. An A/D(Analog-to-Digital) converter(32) converts an analog signal into a digital signal. A central processing unit(33) determines whether the state of received frequency is most suitable state or not; and, if not, controls the direction of the frequency receiving unit(10). A motor control unit(34) electrically controls a motor provided in the driving unit(20) to control the movement of the frequency receiving unit(10).

Description

Automatic Direction Detection Device of Radio Reception Antenna and its Control Method {AUTO-DIRECTION SELECTOR FOR ANTENNA}

The present invention provides an automatic direction detecting apparatus for a radio receiving antenna which can automatically set the direction of a receiving antenna in a communication system using a high frequency wave, wherein the direction of the maximum radio wave is reached in the direction of the receiving antenna in a communication system using microwaves. The present invention relates to an automatic direction detection device of a radio receiving antenna that can automatically track and adjust a position.

In general, the reception antenna of the communication system has been developed by the late 19th century Marconi wireless communication era, many types of antennas have been developed, and the antenna size and shape are used differently according to the purpose of use and the frequency band.

However, in Korea, the importance of antenna has not emerged, and it is currently being used to imitate or import antennas developed in developed countries.In addition, in the telecommunications advanced countries, wireless communication service technology is recognized as high value-added technology. As mobile communication services are commercially available in Korea, active research on antennas used as terminals of mobile stations and fixed stations is needed, but the development of antenna technology is weak compared to developed countries.

And, the antenna refers to a device that converts an electrical signal into radio waves or performs the reverse function. In the case of transmission, the electric signal to be sent from the transmitter is converted into a radio wave and sent far, and when a radio wave transmitted from a long distance is received, the electric wave is converted into an electric signal and transmitted to the receiver.

In the current antenna system, the installer sets the maximum gain direction by manually rotating the antenna using a professional measuring instrument or a simple portable level meter in order to maximize the reception gain of the reception antenna.

When setting the direction manually, it is difficult and cumbersome to adjust by hand, and it is difficult to obtain maximum gain due to high inaccuracy. And even if it is set once, it must be reset when the direction of the antenna is changed due to external factors. At this time, there is a problem that it must be reinstalled manually by using a measuring instrument.

Therefore, the present invention is to solve the above problems, the present invention can be rotated up, down, left, right by the drive unit, and the frequency tuning to accurately select the transmission frequency by detecting the correct direction It is an object of the present invention to provide an automatic direction detecting apparatus for a radio receiving antenna which measures the strength of a signal for one frequency signal selected by frequency tuning and finds a direction in which the strength of the radio signal is strong while rotating the direction of the antenna.

1 is a block diagram showing the configuration of an automatic direction detecting apparatus for a radio wave receiving antenna according to the present invention.

Figure 2 is a flow chart showing the step of automatically setting the direction of the automatic direction detecting apparatus for radio wave reception antenna according to the present invention.

Figure 3 is a schematic diagram showing that the antenna according to the invention to capture the signal while rotating from side to side.

4 is a schematic diagram showing that the antenna according to the present invention captures the maximum frequency.

5 is a flow chart showing another embodiment according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: frequency receiver 20: driver

30: central control unit 31: frequency selector

32: A / D converter 33: central processing unit

34: motor control unit S11: tuner inspection step

S12: tuner setting step S13: first A / D conversion step

S14: level initialization step S15: second A / D conversion step

S16: comparison step S17: direction change step

S18: direction fixing step S21: satellite selection step

S22: command step S23: setting step

S24: initial position shift step S25: search position shift step

S26: level measurement step S27: comparison step

S28: vertical movement step S29: horizontal positioning step

S30: vertical positioning step S31: receiving positioning step

Hereinafter, an automatic direction detecting apparatus for a radio wave receiving antenna and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of an automatic direction detecting apparatus for a radio wave receiving antenna according to the present invention. As shown in FIG. 1, the present invention is largely a frequency receiver 10, a driver 20, and a central controller 30. As shown in FIG. )

The frequency receiving unit 10 is formed in a plate shape so as to receive the frequency applied from the satellite, terrestrial base station, etc., the predetermined radiating elements are arranged in a row, and the driving unit 20 is predetermined above the predetermined plate shape. A motor (not shown) is provided to move the frequency receiving unit 10 in the state where the radiating elements are arranged at intervals of.

The central controller 30 captures a frequency signal of a predetermined frequency band by the frequency receiver and frequency converts the signal, and receives the converted analog signal. The A / D converter 32 for converting the digital signal and the central processing unit 33 for comparing and determining whether the state of the received frequency is an optimal state and controlling the frequency receiver to be moved in the other direction based on the determined value. And a motor control unit 34 for electrically controlling the motor provided in the driving unit to move the frequency receiver.

FIG. 2 is a flow chart illustrating a step of automatically setting a direction by an automatic direction detecting apparatus for a radio wave receiving antenna according to the present invention. As shown in the drawing, the present invention provides a tuner for checking a frequency band of a user. A tuner setting step (S12) for setting the frequency signal set in the check step (S11), the tuner check step (S11), and an A / D conversion step for converting the signal set in the tuner setting step (S12) to a DC value. (S13) and a level initialization step (S14) for initializing the frequency input signal applied through the A / D conversion step (S13) and storing it in the central processing unit 33 of the central control unit 30, and the level initialization. The A / D conversion step S15 for converting the frequency signal value applied through the frequency receiver 10 through step S14 and the DC signal value applied through the A / D conversion step S15 are initially performed. Whether it is the maximum value compared with the set value When comparing the comparison step (S16) and the signal value compared through the comparison step (S16) is not the maximum value direction change step (S17) to adjust the direction of the frequency receiver 10 through the drive unit 20 And, if the value compared through the comparison step (S16) is the maximum value, the direction fixing step (S18) to maintain the state without changing the direction of the frequency receiver 10 is performed.

3 is a schematic diagram showing the antenna according to the present invention to capture the signal while rotating from side to side, Figure 4 is a schematic diagram showing the maximum frequency of the antenna according to the present invention, Figure 5 is a radio wave according to the present invention It is a flowchart showing the operation status of the automatic direction detecting device of the receiving antenna in stages.

As shown in FIGS. 3 to 5, the present invention provides a satellite selection step (S21) for selecting a satellite set by examining which satellite the user selects, and a satellite selected through the satellite selection step (S21). A command step (S22) of giving a start command to drive the antenna by applying power so as to receive a frequency signal, a setting step (S23) of setting a tuner frequency according to the satellite, and the setting step (S23) The initial position shift step (S24) to move to the initial position by the frequency signal set through the, and the previously searched position is set through the compass (not shown), and then set by the compass when searching the satellite again After moving to the position set by the search position moving step (S25) and the search position moving step (S25) and the initial position moving step (S24) to move to a position, and then moving vertically Level measuring step (S26) for measuring the level of the received signal while moving in the horizontal direction by the motor of the drive unit and the received level value of the signal received through the level measuring step is greater than the value of the reference level, A comparison step (S27) for comparing the smallness, and a vertical movement step (S28) for moving the fixed vertical direction when the value compared through the comparison step is greater than or equal to the reference level value; When the value of the reception level is smaller than the reference level in the comparison step (S27), the horizontal positioning step (S29) for setting the maximum reception position of the received signal in the horizontal direction while maintaining the vertical direction fixed, and When the maximum reception position in the horizontal direction is determined through the horizontal positioning step, the position where the signal is received is maximized by adjusting the vertical direction in the fixed state. After setting the vertical positioning step (S30) and the maximum receiving position set in the vertical positioning step (S30), adjust the antenna in the horizontal direction again to check whether the position is the maximum receiving position again. Is performed in the reception positioning step S31.

Looking at the effect of the automatic direction detection device of the radio wave receiving antenna and the control method according to the method performed by the configuration as described above are as follows.

As shown in FIG. 1, in the present invention, a transmission frequency must be selected first to find an optimal reception direction of a reception antenna. When tuning of a frequency for such frequency selection is performed, the frequency selector 31 is fixed to this frequency. Only the selected frequency signal is passed among the signals input from the antenna, and the remaining signals are removed.

The signal passing through the frequency selector 31 is converted into a digital value through an A / D converter 32 and transmitted to the central processing unit 33. The central processing unit 33 of the central control unit 30 stores the strength of the received signal input through the A / D converter 32 for each antenna direction, and finds a direction in which the signal intensity is maximum, and uses the driving unit 20. Adjust the left and right and up and down direction of the antenna.

The higher the frequency of the microwave, the stronger the signal appears, and it is difficult to initially set the direction of the antenna. Therefore, the antenna is fixed in the vertical direction and the antenna is adjusted in the horizontal direction. Detects the presence or absence of a signal of frequency.

As described above, when the antenna does not detect the frequency signal in the vertical direction, the antenna moves slightly in the vertical direction and then continues to search in the horizontal direction while being fixed again.

When the antenna cannot find a specific frequency as described above, if the frequency signal is checked while repeating the above operation, the direction is correctly set by finding the maximum reception frequency level near the direction in which the frequency signal is detected.

When the frequency signal is detected, turn the direction of the antenna only in the horizontal direction while the vertical direction is fixed, set the horizontal direction to maximize the size of the frequency signal, and then set the signal size in the vertical direction with the antenna fixed in the horizontal direction. Find the point where is the maximum, and fix it in the vertical direction again and adjust the optimal horizontal direction.

As shown in FIG. 5, the central controller 30 first selects through which satellite to receive a signal, and when the satellite is selected, turns on the antenna by applying power to the antenna. When the satellite is selected, after setting the frequency signal according to the satellite, it is moved to the initial position by the position initial value preset in the central controller 30, and when it is moved to the position, it is adjusted through a limit switch (not shown). Stop being.

In addition, in the state of moving to the initial position as described above, the user adjusts the existing position using the compass to first determine whether the frequency signal can be received at that position through the compass.

After adjusting to the existing use position, the frequency of the satellite is received at the position, and if the received frequency signal is the position that can maintain the best state, the frequency is received at the position.

However, when the frequency signal is not received at the existing use position, the frequency signal applied by the satellite is found while first measuring the position in the vertical direction and moving in the horizontal direction to first measure the level of the frequency signal. do.

If the reception level of the received frequency is greater than or equal to the reference level, the antenna is moved in the vertical direction and fixed, and the satellite signal is found again while adjusting in the horizontal direction.

When the reception level is smaller than the reference level, the vertical direction is fixed and the horizontal direction is adjusted while setting the position where the maximum frequency signal is applied from the satellite and determining its position. Adjust the vertical direction to determine its position to receive the satellite's frequency optimally.

Then, after the vertical direction is fixed, the horizontal direction is adjusted to determine whether the current position is optimal for receiving the frequency, and then the position is determined.

In addition, since the present invention can set the desired frequency, it is possible to detect the directions of multiple transmission antennas or signals of multiple satellites using one antenna.

The automatic direction detecting apparatus and control method of the radio wave receiving antenna according to the present invention can be easily installed at any time by the automatic function without the help of the installation equipment or the expert at the time of installation of the receiving antenna by the antenna position automatic tracking function, in particular, satellite communication In this case, it is difficult to find the exact position of the desired satellite, but if you use this device, you can easily find the desired satellite, determine the correct direction, and the maximum radio wave comes from the high-frequency transmission antenna such as WLL, IMT2000, PCS, and satellite communication. It is automatically tracked in the direction of the signal, resulting in the maximum reception gain.

Claims (5)

An apparatus for automatically setting a direction to receive a radio wave through an antenna, A frequency receiver configured to have a plate shape to receive frequencies applied from satellites, terrestrial base stations, etc., and list predetermined radiating elements; A driving unit for moving the frequency receiving unit in up, down, left and right directions; And A frequency selector for capturing a frequency in a predetermined frequency band by the frequency receiver and converting a frequency; an A / D converter for converting a received and converted analog signal into a digital signal; and whether a state of a received frequency is optimal. Or a central controller configured to control the frequency receiver to be moved in a different direction, and a motor controller configured to electrically control a motor provided in the driver to control the movement of the frequency receiver. Automatic Direction Detection Device of Radio Reception Antenna. The method of claim 1 An automatic direction detecting device for a radio receiving antenna, characterized in that a small compass is attached to the outside of the automatic direction detecting device of a radio wave receiving antenna so as to shorten the automatic direction detecting time by specifying an initial angle range of the antenna. A tuner checking step of checking which frequency band the user accepts; A tuner setting step of setting a frequency signal set in the tuner checking step; A first A / D conversion step of converting the DC value of the signal set in the tuner setting step; A level initialization step of initializing a frequency signal input applied through the first A / D conversion step and storing it in a central processing unit of the central control unit; A second A / D conversion step of converting an AC signal value applied through an antenna to the DC signal value through the level initialization step; A comparison step of comparing whether or not the DC signal value applied through the second A / D conversion step is a maximum value compared with an initially set value; A direction changing step of adjusting the direction of the antenna through the driver when the signal value compared through the comparing step is not the maximum value; And a direction fixing step of maintaining the state without changing the direction of the antenna when the value compared through the comparing step is the maximum value. In the method of automatically setting the direction of the antenna, A satellite selection step of selecting a satellite set by reviewing which satellite the user selects; A command step of applying a power to receive a frequency signal of the satellite selected through the satellite selection step and giving a start command to drive the antenna; A setting step of setting a tuner frequency according to the satellite; An initial position shift step of moving to an initial position by a frequency signal set through the setting step; A search position moving step of setting a previously searched position through a compass and then moving to a position previously set by the compass when searching the satellite again; A level for measuring the level of the received signal while moving to the position set by the search position shifting step and the initial position shifting step and then moving in the vertical direction and moving in the horizontal direction by the motor of the drive unit in the horizontal direction. Measuring step; A comparison step of comparing whether a reception level value of the signal received through the level measurement step is larger or smaller than a reference level value; A vertical direction moving step of moving the fixed vertical direction when the value compared through the comparing step is greater than or equal to a reference level value; A horizontal positioning step of setting a maximum reception position of a received signal in a horizontal direction while keeping the vertical direction fixed when a value of a reception level is smaller than a reference level in the comparing step; A vertical positioning step of setting a position where a signal is received at the maximum by adjusting the vertical direction while fixing the maximum reception position in the horizontal direction through the horizontal positioning step; And a receiving positioning step of re-checking whether the position is the maximum receiving position by adjusting the antenna in the horizontal direction again while setting the maximum receiving position set in the vertical positioning step. Control method of automatic direction detection device. The method of claim 4, wherein And controlling the general DC motor by the power applied through the motor control unit to set the direction of the antenna.