JP2005252700A - Method for determining acceptance/rejection of antenna installation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna installation acceptance/rejection determining method that is convenient to determine the installation place of an antenna. <P>SOLUTION: This antenna installation acceptance/rejection determining method comprises a first process S2 in which a radio measuring instrument measures the radio intensity of radios from one and the same base station by the number of specified times or more or for specified hours or more to obtain a radio intensity measured value; a second process S3 for determining whether the radio intensity measured value obtained in the first process S2 is always equal to or greater than a performance limit determination value; a third process S4 for calculating an average value of radio intensity measured values obtained in the first process S2; and a fourth process S6 for determining whether the average value obtained in the third process S4 is equal to or greater than an average determination value, and determines that an antenna can be installed when the radio intensity measured value is determined to be always equal or greater than the performance limit determination value in the second process S3 and when the average value of the radio intensity measured values is determined to be equal to or greater than the average determination value in the fourth process S6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an antenna installation feasibility determination method that is convenient for determining an installation location of an antenna of a wireless device used for building facility monitoring using a wireless communication network.

Conventionally, as a building equipment remote monitoring system for monitoring building equipment such as an elevator, a building monitoring apparatus for monitoring the building equipment in the building and a remote monitoring center located at a location away from the installation location of the building monitoring apparatus are used. In the meantime, there has been known a wireless device provided with a wireless communication network that enables transmission and reception of monitoring information signals (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-20049 (paragraph number 0007 to paragraph number 0011, FIG. 1)

  However, in the city center, the above-mentioned remote monitoring system for building facilities is affected by turbulent high-rise buildings and trucks passing over the viaduct, and fading phenomenon occurs. Since it becomes impossible to perform signal transmission / reception with high quality, it is an extremely important issue where the antenna installation location is determined. In addition, once the installation location of the antenna of the wireless device is determined and the antenna of the wireless device is attached to that location, it is understood that transmission and reception of various signals between the wireless device and the remote monitoring center is not performed with high quality. If it is necessary to redo the work of attaching the antenna of the apparatus, there is a problem that the construction cost increases.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to determine an antenna installation availability determination method that is convenient for deciding an installation location where various signals are transmitted and received with high quality when an antenna is installed. To provide.

  An object of the present invention is to provide an antenna installation propriety determination method for determining whether an antenna can be installed by measuring the radio field intensity of a radio wave received by an antenna of a wireless device connected to a monitoring device that monitors a building equipment failure. The first step of obtaining the radio field intensity measurement value by measuring the radio field intensity of the radio wave from the same base station by the radio wave measuring instrument more than a specified number of times or more than a specified time was obtained in the first step. A second step of determining whether or not the radio field intensity measurement value is always equal to or greater than the performance limit determination value by comparing the radio field intensity measurement value and the performance limit determination value; and the radio field intensity obtained in the first step At least a third step of calculating an average value of the measured values and a fourth step of determining whether or not the average value obtained in the third step is equal to or greater than an average determination value. Radio wave intensity measurement in the process of Is always determined to be equal to or greater than the performance limit determination value, and the antenna can be installed when it is determined in the fourth step that the average value of the radio wave intensity measurement values is equal to or greater than the average determination value. When it is determined that the radio field intensity measurement value is not always equal to or greater than the performance limit determination value in the second step, or the average value of the radio field intensity measurement value is determined to be an average determination in the fourth step. This can be achieved by determining that the antenna cannot be installed when it is determined that the value is not greater than or equal to the value.

  ADVANTAGE OF THE INVENTION According to this invention, the installation location of the antenna which performs transmission / reception of various signals with high quality can be determined immediately without difficulty, and it is possible to perform the antenna installation work efficiently and to perform the antenna installation work again. It is possible to provide a method for determining whether or not an antenna can be installed.

  Hereinafter, an embodiment of a method for determining availability of an antenna according to the present invention will be described with reference to the drawings. FIG. 1 is a state diagram of radio wave intensity measurement by a radio wave measuring instrument showing an embodiment of the present invention. FIG. 2 is an external perspective view of a radio wave measuring instrument showing an embodiment of the present invention. FIG. 3 is a screen view showing a state in which a measurement content display column is displayed on the personal computer unit of the radio wave measuring instrument showing an embodiment of the present invention. FIG. 4 is a radio wave intensity measurement chart showing an embodiment of the present invention. FIG. 5 is a flowchart showing a procedure for determining whether or not to install an antenna according to an embodiment of the present invention.

  In FIG. 1, in a building 1 provided with a monitoring device (not shown) for monitoring a failure of a building facility, a radio wave measuring device 2 is installed on the roof of the building 1. In the area where the building 1 is built, a plurality of base stations 3, 4, and 5 that transmit radio waves are constructed. As shown in FIG. 1, the base station 3 is located closer to the building 1 than the other base stations 4 and 5, and is constructed at a position that does not block the radio wave F1 from the base station 3 toward the building 1. Has been. In the base station 4, a viaduct 6 is provided between the base station 4 and the building 1. When a large truck 7 passes on the viaduct 6, the radio wave F <b> 2 from the base station 4 toward the building 1 is blocked. Built in position. The base station 5 is constructed farther away from the building 1 than the other base stations 3 and 4, and at a position that does not block the radio wave F <b> 3 from the base station 5 toward the building 1.

  When the antenna of the wireless device connected to the monitoring device of the building 1 is installed on the roof of the building 1 or the like, before installing the antenna, a plurality of base stations 3, 4, 5 at the place where the antenna is installed. The radio wave intensity is measured by the radio wave measuring device 2 for each radio wave transmitted from the radio wave. Various signals are transmitted and received between the wireless device connected to the monitoring device of the building 1 and the remote monitoring center far away from the building 1 using a wireless communication network including a plurality of base stations 3, 4, and 5. In this case, the wireless communication network is selected from a PHS telephone network, a mobile phone network, a wireless LAN network, and the like.

  As shown in FIG. 2, the radio wave measuring instrument 2 includes at least a radio wave measuring unit 8 and a personal computer unit 9 (hereinafter referred to as a personal computer unit 9). The radio wave measuring unit 8 has a function of transmitting various data obtained by measuring the radio wave intensity of the radio wave to the personal computer unit 9. The personal computer unit 9 has a function of performing a calculation and other processing based on various data transmitted from the radio wave measuring unit 8 and displaying a measurement content display column 10 on the display screen 9A of the personal computer unit 9. ing. As shown in FIG. 3, the measurement content display column 10 includes a radio wave intensity measurement status display column 10A, a radio wave intensity measurement result display column 10B, and an antenna installation availability determination result display column 10C. In the personal computer unit 9, a measurement start button 11 is displayed at the bottom of the display screen 9 </ b> A of the personal computer unit 9.

  As shown in FIG. 3, the radio field intensity measurement status display column 10A displayed on the display screen 9A of the personal computer unit 9 is arranged with a plurality of numbers representing base stations in the vertical direction, Each radio field strength measurement value is displayed. As shown in FIG. 3, the radio field intensity measurement result display column 10B has a plurality of numbers representing base stations arranged vertically, and the average value of the corresponding base station is displayed next to the numbers, and the radio field intensity measurement. The number of base stations whose average value is equal to or greater than the average judgment value (the maximum number of accepted stations) is also displayed. When it is determined that the antenna can be installed, the determination result display field 10C indicates that the antenna can be installed, for example, “usable” is displayed, and if it is determined that the antenna cannot be installed, that fact is displayed. For example, “unusable” is displayed.

  The radio field intensity measurement chart shown in FIG. 4 is obtained by measuring the radio field intensity of radio waves F1, F2, and F3 transmitted from the base stations 3, 4, and 5 shown in FIG. The radio field intensity measurement value of the radio wave F1 transmitted, the graph G2 represents the radio field intensity measurement value of the radio wave F2 transmitted from the base station 4, and the graph G3 represents the radio field intensity measurement value of the radio wave F3 transmitted from the base station 5. Respectively.

  As shown in the graph G1 of FIG. 4, the radio field intensity of the radio wave F1 transmitted from the base station 3 is always equal to or greater than the performance limit determination value D1, and the average value of the radio field intensity measurements is an average. It turns out that it is more than judgment value D2. As shown in the graph G2 in FIG. 4, the radio field intensity of the radio wave F2 transmitted from the base station 4 is normally the average value of the radio field intensity measurement value is equal to or greater than the average judgment value D2, and the radio field intensity measurement value is the performance limit judgment. Although it is equal to or greater than the value D1, it can be seen that the radio field intensity measurement value is smaller than the performance limit judgment value D1 in the time zone when the large truck 7 passes on the viaduct 6. As shown in the graph G3 of FIG. 4, the radio field intensity of the radio wave F3 transmitted from the base station 5 is always equal to or greater than the performance limit judgment value D1, but the average value of the radio field intensity measurement values is the average judgment. It can be seen that it is always smaller than the value D2. Here, the performance limit determination value D1 refers to the reception performance limit value of the wireless device. The average determination value D2 is an average value of radio field intensity that enables transmission and reception of various signals between a wireless device connected to the monitoring device of the building 1 and a remote monitoring center far from the building 1 with high quality. .

    Next, the procedure for determining whether an antenna can be installed using the radio wave measuring instrument 2 having the above-described configuration will be described in detail with reference to FIG.

  First, the radio wave measuring device 2 is installed at a place where an antenna is to be installed, and then, as shown in step S1 of FIG. In that case, the process proceeds to step S2 in FIG.

  In step S2 (first step) of FIG. 5, by clicking the measurement start button 11 on the display screen 9A in the personal computer unit 9 of the radio wave measuring device 2, the radio wave measuring unit 8 of the radio wave measuring device 2 is operated. The radio field intensity of the radio waves F1, F2, and F3 transmitted from the base stations 3, 4, and 5 to the radio wave measuring unit 8 is measured, and the radio field intensity of the display screen 9A in the personal computer unit 9 of the radio wave measuring instrument 2 is measured. The measurement status is displayed in the status display column 10A (see FIG. 3). After step S2 ends, the process proceeds to step S3 in FIG.

  Next, in step S3 (second step) in FIG. 5, the radio field intensity measurement value is always a performance limit determination compared to the radio field intensity measurement value obtained in step S2 (first step) and the performance limit determination value D1. Whether or not the value is greater than or equal to the value D1 is determined by the personal computer unit 9 of the radio wave measuring instrument 2. When it is determined that the radio field intensity measurement value is not always greater than or equal to the performance limit determination value D1, the process proceeds to step S9 and step S10 in FIG. “Unusable” is displayed in the result display column 10C to inform the user that the antenna is not suitable for installation. If it is determined in step S3 (second step) in FIG. 5 that the radio field intensity measurement value is always greater than or equal to the performance limit determination value D1, the process proceeds to step S4 in FIG.

  Next, in step S4 (third step) in FIG. 5, after the average value of the radio field intensity measurement values is calculated by the personal computer unit 9 of the radio wave measuring instrument 2, the process proceeds to step S5 in FIG. In step S5, if the measurement of the radio field intensity is not continuously performed for the specified time or the specified number of times, the abnormal fluctuation of the radio field intensity cannot be captured. Therefore, the measurement of the radio field intensity is continuously performed for the specified time or the specified number of times. The personal computer unit 9 of the radio wave measuring instrument 2 determines whether or not If it is determined in step S5 that the measurement of the radio field intensity has not been performed for the specified time or the specified number of times, the process returns to step S2 (first step) until the specified time or the specified number of times is reached. Step S2 (first step) to step S5 are repeated.

  If it is determined in step S5 in FIG. 5 that the measurement of the radio field intensity has been performed for a specified time or a specified number of times, the process proceeds to step S6 (fourth process) in FIG. 5 and in step S4 (third process). The personal computer unit 9 of the radio wave measuring device 2 determines whether or not the obtained average value is equal to or greater than the average determination value D2. If it is determined in step S6 (fourth step) that the calculated average value is not equal to or greater than the average determination value D2, the process proceeds to step S9 and step S10 in FIG. “Unusable” is displayed in the determination result display field 10C of whether or not the antenna can be installed on the screen 9A, and it is automatically notified that the antenna is not suitable for installation. In step S9 of FIG. 5, the average value obtained in step S4 (third step) and the corresponding base station number are displayed in the radio field intensity measurement result display column 10B.

  When it is determined in step S6 (fourth step) in FIG. 5 that the calculated average value is equal to or greater than the average determination value D2, the process proceeds to step S7 in FIG. 5 and in step S4 (third step). After the obtained average value and the corresponding base station number are displayed in the radio wave intensity measurement result display column 10B, the process proceeds to step S8 in FIG.

  Next, in step S8 of FIG. 5, "Available" is displayed in the determination result display column 10C of the antenna installation feasibility on the display screen 9A of the personal computer unit 9 of the radio wave measuring instrument 2, and the place where the antenna is installed is Automatically inform you that it is appropriate.

  In the above procedure using the radio wave measuring instrument 2 configured as described above, whether or not an antenna is installed is determined for the radio waves F1, F2, and F3 transmitted from the base stations 3, 4, and 5 shown in FIG. Become.

  First, as shown in the graph G1 of FIG. 4, the radio wave F1 transmitted from the base station 3 always proceeds from step S3 to step S4 in FIG. An average value of the radio field intensity measurement values is calculated. Thereafter, the process proceeds to step S5, and if it is determined that the measurement of the radio field intensity has been performed for the specified time or the specified number of times, the process further proceeds to step S6. Since the average value of the radio field intensity measurement values of the radio wave F1 is equal to or greater than the average judgment value D2, as shown in the graph G1 in FIG. 4, the process proceeds to step S7 in FIG. 5 and obtained in step S4 (third step). The average value and the corresponding base station number are displayed in the measurement result display column 10B of the display screen 9A in the personal computer unit 9, and then the process proceeds to step S8 in FIG. “Available” is displayed in the determination result display column 10 </ b> C of whether or not the antenna installation of 9 </ b> A is possible. Thereby, the display screen 9A on the personal computer unit 9 indicates that the place where the radio wave measuring device 2 is installed to measure the radio field intensity of the radio wave F1 transmitted from the base station 3 is “possible” as the antenna installation location. Above, it can be easily confirmed.

Next, as shown in the graph G2 in FIG.
Since about 30 seconds have elapsed after the start of measurement, the radio field intensity measurement value becomes smaller than the performance limit judgment value D1, so the process proceeds from step S3 to step S9 in FIG. 5 and obtained in step S4 (third step). The average value and the corresponding base station number are displayed in the radio field intensity measurement result display field 10B, and then the process proceeds to step S10 in FIG. 5 to determine whether the antenna on the display screen 9A of the personal computer unit 9 of the radio wave measuring instrument 2 can be installed. “Unusable” is displayed in the result display column 10C. Accordingly, the display screen 9A on the personal computer unit 9 indicates that the place where the radio wave measuring device 2 is installed to measure the radio field intensity of the radio wave F2 transmitted from the base station 4 is “No” as the antenna installation location. You can check above.

  Next, as shown in the graph G3 in FIG. 4, the radio wave F3 transmitted from the base station 5 always has a radio field intensity measurement value equal to or greater than the performance limit determination value D1, and thus the process proceeds from step S3 to step S4 in FIG. Then, an average value of the radio field intensity measurement values is calculated. Thereafter, the process proceeds to step S5, and if it is determined that the measurement of the radio field intensity has been performed for the specified time or the specified number of times, the process further proceeds to step S6. Since the average value of the radio field intensity measurement value of the radio wave F3 is smaller than the average judgment value D2, as shown in the graph G3 of FIG. 4, the process proceeds from step S6 to step S9 in FIG. 5, and step S4 (third step). And the corresponding base station number are displayed in the radio field intensity measurement result display column 10B. Thereafter, the process proceeds to step S10 in FIG. 5 and the antenna of the display screen 9A in the personal computer unit 9 of the radio wave measuring instrument 2 is displayed. “Unusable” is displayed in the determination result display column 10C of whether or not installation is possible. Accordingly, the display screen 9A on the personal computer unit 9 indicates that the place where the radio wave measuring device 2 is installed to measure the radio field intensity of the radio wave F3 transmitted from the base station 5 is “No” as the antenna installation location. You can check above.

  As described above, for all of the radio waves F1, F2, and F3 received by the radio wave measuring instrument 2, the radio wave intensity measuring value is measured by the radio wave measuring instrument 2, and the radio wave intensity measured value is compared with the performance limit judgment value D1. In addition, by comparing and determining the average value of the radio field intensity measurement value and the average determination value D2, among the plurality of base stations 3, 4, and 5, "the radio field intensity measurement value is always greater than or equal to the performance limit determination value D1. And the average value of the radio field intensity measurement values is determined to be equal to or greater than the average determination value D2. If there is at least one base station, the wireless device connected to the monitoring device of the building 1 and the building 1 Since it is possible to transmit and receive various signals to and from a remote monitoring center far away from the station, it is only necessary to attach an antenna to a place where the radio wave intensity is measured by the radio wave measuring device 2.

  In the above embodiment, the radio wave intensity of the radio wave received by the antenna is measured by the radio wave measuring unit 8 of the radio wave measuring instrument 2, and the measurement status of the radio wave intensity and the radio wave intensity are displayed on the screen of the personal computer unit 9 of the radio wave measuring instrument 2. Since the measurement result and the determination result of whether or not the antenna can be installed are displayed, it is easy to check whether the antenna installation location is “possible” or “no” with one radio wave measuring instrument 2 Thus, the measurement work of the radio field intensity is simple, and the process can be smoothly shifted to the antenna installation work.

  In the procedure for determining whether or not the antenna can be installed using the radio wave measuring instrument 2 of the above embodiment, the radio field intensity measurement value for each of the radio waves F1, F2, and F3 transmitted from the plurality of base stations 3, 4, 5 , Measurement comparison of radio field intensity and performance limit determination value D1 are separately performed to determine whether the antenna is installed as “possible” or “not”. For all the radio waves F1, F2, and F3 transmitted from the base stations 3, 4, and 5, the radio field intensity measurement value is continuously measured and the radio field intensity measurement value is compared with the performance limit determination value D1. Thus, the measurement status of the radio wave intensity, the measurement result, the determination result of whether or not the antenna can be installed, and the like may be simultaneously displayed on the screen of the personal computer unit 9.

  In the above-described embodiment, whether the place where the radio wave intensity is measured by the radio wave measuring device 2 before performing the mounting operation of the antenna of the wireless device is “possible” or “no” as the antenna installation location. After the determination, the antenna is attached to the place where the radio wave intensity is measured by the radio wave measuring instrument 2 when the determination is “OK”, but the present invention is not limited to this. When the antenna of the wireless device is attached to a predetermined location, and the surrounding environment at the predetermined location changes, and it becomes necessary to reattach the antenna of the wireless device to another location, the radio wave measurement of the above embodiment You may make it look for the installation place of an antenna with the antenna installation propriety determination method using the apparatus 2. FIG.

It is a radio wave intensity measurement state diagram by the radio wave measuring instrument concerning one embodiment of the present invention. 1 is an external perspective view of a radio wave measuring instrument according to an embodiment of the present invention. It is a screen figure of the state by which the measurement content display column was displayed on the personal computer part of the radio wave measuring device which shows one Embodiment of this invention. It is a measurement chart of the radio wave intensity measured by the radio wave measuring instrument concerning one embodiment of the present invention. It is a flowchart which shows the procedure of the antenna installation availability determination concerning one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Radio wave measuring device 3, 4, 5 Base station 6 Viaduct 7 Large truck 8 Radio wave measuring part 9 Personal computer part 9A Display screen 10 Measurement content display column 10A Radio wave intensity measurement status display column 10B Radio wave intensity measurement result display column 10C Judgment result display field of antenna installation availability 11 Measurement start button D1 Performance limit judgment value D2 Average judgment value F1, F2, F3 Radio wave G1, G2, G3 Graph

Claims (5)

  The same base station in the antenna installation feasibility judging method for measuring the radio wave intensity of the radio wave received by the antenna of the wireless device connected to the monitoring device for monitoring the failure of the building equipment by using a radio wave measuring device A first step of obtaining a radio field intensity measurement value by measuring the radio field intensity of the radio wave from the radio wave measuring instrument by the radio wave measuring instrument more than a specified number of times or for a specified time, and the radio field intensity measurement value obtained in the first step And a second step of determining whether or not the radio field intensity measurement value is always equal to or greater than the performance limit determination value compared with the performance limit determination value, and an average of the radio field intensity measurement values obtained in the first step A third step of calculating a value and a fourth step of determining whether or not the average value obtained in the third step is equal to or greater than an average determination value; The radio field strength measurement It is determined that the antenna can be installed when it is determined that the field determination value is greater than or equal to and the average value of the radio field intensity measurement values is determined to be greater than or equal to the average determination value in the fourth step. And determining that the radio field intensity measurement value is not always equal to or greater than the performance limit determination value in the second step or that the average value of the radio field intensity measurement value is equal to or greater than the average determination value in the fourth step. When it is determined that the antenna is not, it is determined that the antenna cannot be installed.   For a plurality of base stations that transmit radio waves to the antenna, the radio wave intensity of the radio waves is measured with a radio wave measuring instrument, and among the base stations, the radio wave intensity measurement value is always in the second step. In the case where there is at least one base station that is determined to be equal to or higher than the performance limit determination value and that is determined to have an average value of the radio field intensity measurement value equal to or higher than an average determination value in the fourth step, 2. The antenna installation availability determination method according to claim 1, wherein it is determined that the antenna can be installed.   2. The display according to claim 1, wherein when it is determined that the antenna can be installed, a message to that effect is displayed, and when it is determined that the antenna cannot be installed, a message to that effect is displayed. 2. The antenna installation availability determination method according to 2.   4. The antenna installation availability determination method according to claim 1, wherein the performance limit determination value is a reception performance limit value of the wireless device. The radio wave measuring device is composed of a radio wave measuring unit for measuring the radio wave intensity of the radio wave received by the antenna and a personal computer unit. On the screen of the personal computer unit, the radio wave intensity measurement status, the radio wave intensity measurement result 5. The antenna installation availability determination method according to claim 1, wherein the determination result of whether or not the antenna is installed is displayed.

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