JP5755594B2 - Antenna direction adjusting method and apparatus - Google Patents

Description

  The present invention relates to an antenna direction adjustment method and apparatus for adjusting the direction of a directional antenna between radio apparatuses facing each other constituting a radio communication system.

  A portable wireless communication system is used when a temporary communication line is constructed to recover an access communication path that has been interrupted due to a disaster or the like. A portable wireless communication system establishes a communication line by setting up a wireless device between two arbitrary points where demand occurs without fixing the installation location of the wireless device. In order to set up the wireless device, it is necessary to install the directional antenna of the wireless device toward the facing wireless device and adjust the antenna direction in the direction that provides the best line quality.

  As a conventional antenna direction adjustment method, a direction adjustment jig is proposed that uses a scope or telescope fixed so as to match the antenna directivity direction of the wireless device so that the opposing antenna is positioned at the center of the scope or telescope. (For example, Patent Document 1).

  In addition, a first camera that captures an image of an opposing antenna through a scope, and a second camera that is attached to a fixed portion to which the antenna is attached so as to face the antenna directivity direction, the opposing antenna is the first one. A direction adjustment jig has been proposed that adjusts the antenna direction so that it is positioned approximately in the center of the image captured by the second camera, and further adjusts the antenna direction so that it is positioned at the center of the image captured by the first camera. (For example, Patent Document 2).

Japanese Patent Application Laid-Open No. 2004-253921 JP 2007-088576 A

In general, whether or not the antenna directivity is correct is determined by measuring the received power of the antenna, displaying the measured value on a monitor or the like, and checking the value by the operator.
On the other hand, the conventional antenna direction adjustment methods shown in Patent Documents 1 and 2 both adjust the antenna direction by visual observation. That is, since the operator needs to adjust the antenna directivity direction while looking through the scope or the like or looking at the monitor image, the measured value of the received power cannot be confirmed at the same time. For this reason, for example, an operator who adjusts the antenna direction and an operator who confirms the received power are required, and the antenna direction is adjusted while exchanging between them.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an antenna direction adjustment method and apparatus that allows an operator to adjust an antenna direction while easily monitoring received power.

According to a first aspect of the present invention, there is provided an antenna direction adjustment method for adjusting an antenna direction provided in a radio apparatus, wherein the received electric field strength of a received signal of an antenna is measured, and when the received electric field strength is smaller than a reference value, When the voice of the first voice pattern is output and the received electric field strength is larger than the reference value and the maximum reception level held in the storage unit is updated, the voice of the second voice pattern is output and the reception is performed. When the received signal strength is greater than the reference value and the maximum received level stored in the memory has not been updated, the received signal modulation method can be used for the received signal strength. outputs audio of a corresponding plurality of third speech pattern in response to the voice of the second speech patterns and a plurality of third speech pattern, antenna in the direction of the received field strength is increased To adjust the direction.
In the antenna direction adjusting method of the first invention, Pt is a received electric field strength, N is a ringing scale constant, M is a constant larger than | Pt |, and the voice of the first voice pattern has a voice frequency f of N [Hz]. The voices of the plurality of third voice patterns are set such that the voice frequency f changes according to the equation f = (M + Pt) × N [Hz] according to the received electric field strength Pt.

The voices of the plurality of third voice patterns are voices having different voice patterns according to the modulation method of the received signal. The voices of the plurality of third voice patterns are voices indicating the modulation method names of the received signals.

According to a second aspect of the present invention, there is provided an antenna direction adjusting device for adjusting a direction of an antenna provided in a wireless device, wherein a means for measuring and outputting a received electric field strength of a received signal of an antenna, and a received electric field strength are input The control means for outputting the voice of the voice pattern corresponding to the received electric field strength, and a storage unit for holding the maximum value of the received electric field strength inputted by the control means as the maximum reception level. When the value is smaller than the value, the sound of the first sound pattern is output, and the sound of the second sound pattern is output when the received electric field strength is larger than the reference value and the maximum reception level held in the storage unit is updated. outputs a, the reception field strength overwritten and stored in the storage unit, when the receiving field strength is not updating the maximum reception level held in the large and the storage unit than the reference value, the received field strength A configuration that outputs audio of a plurality of third speech patterns corresponding respectively to the modulation scheme Oite available received signal, in response to the voice of the second speech patterns and a plurality of third speech pattern, received The direction of the antenna is adjusted so that the electric field strength increases.
In the antenna direction adjustment apparatus of the second invention, Pt is a received electric field strength, N is a ringing scale constant, M is a constant larger than | Pt |, and the voice of the first voice pattern has a voice frequency f of N [Hz]. The voices of the plurality of third voice patterns are set such that the voice frequency f changes according to the equation f = (M + Pt) × N [Hz] according to the received electric field strength Pt.

  According to the present invention, the direction of the antenna can be easily adjusted in a direction in which the received electric field strength is increased while listening to the voice pattern or the voice frequency corresponding to the received electric field strength of the received signal of the antenna.

  Also, by distinguishing the voice of the voice pattern corresponding to the magnitude relationship between the received electric field strength and the reference value, the direction of the antenna can be easily adjusted in the direction in which the received electric field strength is increased. Also, the voice of the first voice pattern when the received electric field strength is smaller than the reference value, the voice of the second voice pattern when the maximum reception level is larger than the reference value and the maximum reception level is being updated, and the maximum reception level which is larger than the reference value By recognizing the sound of the third sound pattern when not updating the antenna, the direction of the antenna can be easily adjusted in the direction in which the received electric field strength increases.

  Furthermore, by knowing the sound of the sound pattern corresponding to the available modulation method and the sound frequency, it is possible to know how much received electric field strength can be obtained, and whether the current antenna indication direction is the maximum reception level direction or not. It becomes possible to know.

It is a figure which shows the Example structure of the antenna direction adjustment apparatus of this invention. 3 is a flowchart illustrating a first processing procedure example of a control unit 21. 5 is a flowchart illustrating a second processing procedure example of the control unit 21. It is a figure which shows the example of the audio | voice of a 1st audio | voice pattern, and the audio | voice of a 2nd audio | voice pattern. It is a figure which shows the example of the audio | voice of a 3rd audio | voice pattern. 10 is a flowchart illustrating a third processing procedure example of the control unit 21. It is a figure which shows the example of the audio | voice of a 3rd audio | voice pattern.

FIG. 1 shows a configuration of an embodiment of an antenna direction adjusting apparatus according to the present invention.
In FIG. 1, the antenna direction adjustment apparatus of the present embodiment is configured by connecting an audio signal processing unit 20 to a radio signal processing unit 10 that constitutes a main part of a radio apparatus.

  The radio signal processing unit 10 includes a signal processing unit 11, a transmission unit 12, a reception unit 13 and a duplexer 14, and an antenna 15 is connected to the transmission unit 12 and the reception unit 13 via the duplexer 14.

  The signal processing unit 11 performs an encoding process for transmitting the transmission data as a baseband signal, and outputs the transmission data to the transmission unit 12. The transmission unit 12 performs transmission processing such as modulation for transmitting the transmission data signal-processed by the signal processing unit 11 as a radio signal, and transmits the transmission data from the antenna 15 via the duplexer 14. The receiving unit 13 performs reception processing such as demodulation of a signal received by the antenna 15 and input via the duplexer 14 and outputs the result to the signal processing unit 11. The signal processing unit 11 performs a decoding process on the baseband signal input from the receiving unit 13 and outputs it as received data.

  In addition, the receiving unit 13 outputs the received electric field strength of the received signal to the audio signal processing unit 20. Further, the receiving unit 13 may output information indicating the demodulated current modulation scheme to the audio signal processing unit 20.

  The audio signal processing unit 20 includes a control unit 21, a storage unit 22, and an audio output unit 23. The control unit 21 causes the sound output unit 23 to output sound patterns or sound frequencies corresponding to the received electric field strength input from the receiving unit 13 of the wireless signal processing unit 10. The storage unit 22 holds the maximum value (maximum reception level) of the received electric field strength input from the receiving unit 13 of the radio signal processing unit 10, and the control unit 21 stores the input received electric field strength and the maximum held by the storage unit 22. The voice of the voice pattern when the received electric field strength is compared with the reception level and the maximum reception level is updated, or the voice of the voice pattern or the voice frequency corresponding to the current modulation method input from the receiver 13 is voiced. You may make it output to the output part 23. FIG. The audio output unit 23 outputs the audio pattern and audio of the audio frequency notified by the control unit 21 through a speaker or the like. Hereinafter, a detailed processing procedure example of the control unit 21 will be described.

FIG. 2 shows a first processing procedure example of the control unit 21.
In FIG. 2, when receiving field strength is received from the receiving unit 13 (S1), the control unit 21 causes the voice output unit 23 to output a voice pattern or voice frequency corresponding to the received field strength (S2). Here, the sound pattern corresponding to the received electric field strength is, for example, a sound in which the interval of the intermittent sound becomes shorter as the received electric field strength becomes higher and becomes a continuous sound when a predetermined threshold value is exceeded. Further, the audio frequency corresponding to the received electric field strength is, for example, a voice whose audio frequency increases as the received electric field strength increases. For example, when the received electric field strength is Pt, the ringing scale constant is N, and the constant M (an integer M> | Pt |), the audio frequency f is expressed by the following equation.
f = (M + Pt) × N [Hz]

  Thus, if the interval of the intermittent sound of the audio pattern is shortened due to the change of the antenna direction or the audio frequency is increased, the operator continuously directs the antenna in that direction, thereby The strength can be reached.

FIG. 3 shows a second processing procedure example of the control unit 21.
In FIG. 3, when receiving field intensity is received from the receiver 13 (S11), the controller 21 determines whether or not the received field intensity is greater than or equal to a reference value (S12). When the received electric field strength is lower than the reference value, the sound output unit 23 outputs the sound (for example, intermittent sound) of the first sound pattern including silence (S13). If the received electric field strength is greater than or equal to the reference value, whether or not the received electric field strength is greater than or equal to the value obtained by subtracting the error margin δP from the received electric field strength held in the storage unit 22, that is, whether or not the maximum received level so far has been updated. Is determined (S14). When the input reception field strength is updating the maximum reception level, the voice (for example, continuous sound) of the second voice pattern is selected (S15), and the input reception field strength is overwritten in the storage unit 22 ( S16). Accordingly, the storage unit 22 holds the maximum reception level among the received electric field strengths measured so far. Further, an audio frequency corresponding to the received electric field strength is selected (S17), and the audio of the selected audio pattern and audio frequency is output from the audio output unit 23 (S18).

  An example of the voice of the first voice pattern or the voice of the second voice pattern is shown in FIG. When the voice (continuous sound) of the second voice pattern is heard, the received electric field strength is equal to or higher than the reference value and the maximum reception level is updated, so that the antenna direction is approaching to the radio device facing the antenna. Indicates the state. At this time, since the audio frequency is also increased, the antenna direction can be adjusted more easily.

  On the other hand, if the received reception field strength is equal to or higher than the reference value but the maximum reception level is not updated, the voice of the third voice pattern corresponding to the modulation method is selected (S19), and further, the reception field strength corresponding to the reception field strength is selected. The audio frequency is selected (S17), and the audio of the selected audio pattern and audio frequency is output from the audio output unit 23 (S18).

  An example of the voice of the third voice pattern is shown in FIG. The sound of the third sound pattern corresponding to the modulation method is, for example, a one-dot chain line sound in the case of the modulation method A (for example, QPSK), and is a broken line sound in the case of the modulation method B (for example, 16 QAM). In the case of C (for example, 64QAM), for example, it is a dotted line sound. The one-dot chain line sound, the broken line sound, and the dotted line sound shown here are images of differences in the interval and pattern of the intermittent sound. For example, the intermittent sound of the first sound pattern has a longer interval of the intermittent sound than the dotted line sound. When the voice of the third voice pattern is heard, the received electric field strength does not update the maximum reception level, but it is equal to or higher than the reference value, so that the antenna direction is almost directed to the facing radio apparatus. Furthermore, the modulation method can be confirmed according to the sound pattern, and the antenna direction may be adjusted until the sound pattern corresponding to the required modulation method is obtained, so that the completion of the operation can be easily determined.

  In general, if the modulation schemes A, B, and C are the above examples, the received electric field strength increases in that order, and the audio frequency also increases in that order. Therefore, by setting the voice pattern to be different for each modulation method, the received electric field strength can be notified to the worker with coarse accuracy. However, by further matching the audio frequency, the operator can receive the signal with fine accuracy. It becomes possible to notify the electric field strength.

  Thus, in the above example, when intermittent sound is output from the audio output unit 23, it can be seen that the received electric field strength is lower than the reference value and the direction of the antenna is not suitable for the facing radio apparatus. On the other hand, when continuous sound is output, the received electric field strength is above the reference value, the received electric field strength is in the state of updating the maximum reception level, and the direction of the antenna is facing the facing radio device I understand. In addition, if the sound has a sound pattern other than intermittent sound and continuous sound, the received electric field strength is equal to or higher than the reference value, and the corresponding modulation method can be identified. Then, the operator adjusts the direction as long as the continuous sound can be heard, and when the continuous sound converges, the direction adjustment can be ended.

  Also, the operator can know how much received electric field strength can be obtained by listening to the voice of the voice pattern corresponding to the available modulation method and the voice frequency without looking at the monitor or the like. . Furthermore, it is possible to know whether or not the current antenna indication direction is the maximum reception level direction.

FIG. 6 shows a third processing procedure example of the control unit 21.
Here, in step S19 of FIG. 4, instead of selecting the voice of the third voice pattern corresponding to the modulation scheme, as shown in FIG. 7, a recorded voice or synthesized voice indicating the name of the modulation scheme is used. Is output (S20). In this case, the audio frequency is not set according to the received electric field strength. Further, if the received electric field strength is lower than the reference value, silence may be used.

  In the processing procedure of the control unit 21 shown in FIG. 3 and FIG. 6, if there is one audio output unit 23, the audio of the second audio pattern (continuous sound) and the audio of the third audio pattern (dotted line) Sound, broken line sound, dotted line sound) may be output simultaneously. In this case, if the direction of the antenna is facing the facing radio apparatus, the continuous sound and the sound corresponding to each modulation method can be heard. Then, after facing the radio apparatus facing the antenna, and the received electric field intensity reaches the maximum reception level, only the sound corresponding to each modulation method can be heard.

DESCRIPTION OF SYMBOLS 10 Radio signal processing part 11 Signal processing part 12 Transmission part 13 Reception part 14 Duplexer 15 Antenna 20 Audio | voice signal processing part 21 Control part 22 Memory | storage part 23 Audio | voice output part

Claims (6)

In an antenna direction adjustment method for adjusting the direction of an antenna provided in a wireless device,
Measure the received electric field strength of the received signal of the antenna,
When the received electric field strength is smaller than a reference value, the sound of the first sound pattern is output,
When the received electric field strength is larger than the reference value and the maximum reception level held in the storage unit is updated, the voice of the second voice pattern is output and the received electric field strength is overwritten in the storage unit Save and
When the received electric field strength is larger than the reference value and the maximum reception level held in the storage unit has not been updated, a plurality of second signals respectively corresponding to modulation methods of the received signal that can be used in the received electric field strength . Output the voice of 3 voice pattern,
The antenna direction adjustment method, wherein the direction of the antenna is adjusted in a direction in which the received electric field strength is increased in accordance with the sound of the second sound pattern and the plurality of third sound patterns. In the antenna direction adjustment method according to claim 1,
Pt is the received electric field strength, N is a ringing scale constant, M is a constant larger than | Pt |
The voice of the first voice pattern has a voice frequency f of N [Hz],
In the voices of the plurality of third voice patterns, the voice frequency f changes according to the formula f = (M + Pt) × N [Hz] according to the received electric field strength Pt.
Antenna direction adjustment method characterized by the above. In the antenna direction adjustment method according to claim 1 or 2 ,
The antenna direction adjustment method, wherein the voices of the plurality of third voice patterns are voices of different voice patterns according to a modulation method of the received signal. In the antenna direction adjustment method according to claim 1,
The antenna direction adjustment method, wherein the voices of the plurality of third voice patterns are voices indicating modulation system names of the received signals. In an antenna direction adjusting device for adjusting the direction of an antenna provided in a wireless device,
Means for measuring and outputting the received electric field strength of the received signal of the antenna;
Control means for inputting the received electric field strength and outputting sound of a voice pattern corresponding to the received electric field strength;
A storage unit that holds, as a maximum reception level, the maximum value of the received electric field strength input by the control unit;
The control means includes
When the received electric field strength is smaller than a reference value, the sound of the first sound pattern is output,
When the received electric field strength is larger than the reference value and the maximum reception level held in the storage unit is updated, the voice of the second voice pattern is output and the received electric field strength is stored in the storage unit Save over
When the received electric field strength is larger than the reference value and the maximum reception level held in the storage unit has not been updated, a plurality of reception signal modulation schemes that can be used in the received electric field strength, respectively. It is the structure which outputs the sound of the 3rd sound pattern,
The antenna direction adjustment apparatus, wherein the direction of the antenna is adjusted in a direction in which the received electric field strength is increased according to the sound of the second sound pattern and the plurality of third sound patterns. In the antenna direction adjustment device according to claim 5,
Pt is the received electric field strength, N is a ringing scale constant, M is a constant larger than | Pt |
The voice of the first voice pattern has a voice frequency f of N [Hz],
In the voices of the plurality of third voice patterns, the voice frequency f changes according to the formula f = (M + Pt) × N [Hz] according to the received electric field strength Pt.
An antenna direction adjusting device characterized by that.

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