JP7199040B2 - Display method, program, display device, measurement device, and measurement display system - Google Patents

Description

The present disclosure generally relates to display methods, programs, display devices, measurement devices, and measurement display systems. The present disclosure particularly relates to a display method, a program, a display device, a measurement device, and a measurement display system for selecting frequency channels used for wireless communication.

Patent Literature 1 discloses a lighting system including a plurality of lighting fixtures and a terminal device. In a lighting system, a server device is used to provide setting information of lighting fixtures to a terminal device, and wireless communication is performed between the server device and the terminal device, or between the server device and the lighting fixtures.

However, wireless communication is easily affected by the surrounding environment, and wireless communication between devices may not be possible depending on how the frequency channel for wireless communication is selected. Therefore, when installing a system using wireless communication (wireless communication system), it is desirable to select an appropriate frequency channel in consideration of the influence of the surrounding environment on wireless communication. However, it is difficult for the human senses to determine the influence of the surrounding environment on wireless communication.

JP 2017-162719 A

An object is to provide a display method, a program, a display device, a measurement device, and a measurement display system that enable setting of a frequency channel suitable for wireless communication.

A display method according to one aspect of the present disclosure includes an acquisition step and a display step. The obtaining step is a step of obtaining a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The displaying step is a step of displaying the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate, which is expressed by the rate at which the radio wave intensity exceeds a threshold when the radio wave intensity is measured multiple times. In the displaying step, among the plurality of specific frequency channels, the degree of congestion is less than a specified value and the use of the specific frequency channel with the lowest degree of congestion is recommended.
A display method according to another aspect of the present disclosure includes an acquisition step and a display step. The obtaining step is a step of obtaining a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The displaying step is a step of displaying the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate , which is expressed by the rate at which the radio wave intensity exceeds a threshold when the radio wave intensity is measured multiple times . The congestion status includes a plurality of representative values of congestion rates obtained at different points for each of the plurality of specific frequency channels.

A program according to one aspect of the present disclosure is a program for causing one or more processors to execute any of the display methods described above .

A display device according to one aspect of the present disclosure includes an acquisition unit and a display unit. The obtaining unit obtains a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The display unit displays the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate, which is expressed by the rate at which the radio wave intensity exceeds a threshold when the radio wave intensity is measured multiple times. The display unit displays a recommendation to use a specific frequency channel whose congestion degree is less than a specified value and whose congestion degree is the lowest among the plurality of specific frequency channels.
A display device according to another aspect of the present disclosure includes an acquisition unit and a display unit. The obtaining unit obtains a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The display unit displays the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate , which is expressed by the rate at which the radio wave intensity exceeds a threshold when the radio wave intensity is measured multiple times . The congestion status includes a plurality of representative values of congestion rates obtained at different points for each of the plurality of specific frequency channels.

A measuring device according to one aspect of the present disclosure includes a measuring unit and a determining unit. The measurement unit measures radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determination unit determines a degree of congestion based on radio wave intensity for each of the plurality of specific frequency channels. A congestion state is displayed on the display unit based on the degree of congestion of each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate , which is expressed by the rate at which the radio wave intensity exceeds a threshold when the radio wave intensity is measured multiple times . The congestion status includes a plurality of representative values of congestion rates obtained at different points for each of the plurality of specific frequency channels.

A measurement display system according to one aspect of the present disclosure includes a measurement unit, a determination unit, and a display unit. The measurement unit measures radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determination unit determines a degree of congestion based on radio wave intensity for each of the plurality of specific frequency channels. The display unit displays the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate, which is expressed by the rate at which the radio wave intensity exceeds a threshold when the radio wave intensity is measured multiple times. The display unit displays a recommendation to use a specific frequency channel whose congestion degree is less than a specified value and whose congestion degree is the lowest among the plurality of specific frequency channels.
A measurement display system according to another aspect of the present disclosure includes a measurement unit, a determination unit, and a display unit. The measurement unit measures radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determination unit determines a degree of congestion based on radio wave intensity for each of the plurality of specific frequency channels. The display unit displays the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate , which is expressed by the rate at which the radio wave intensity exceeds a threshold when the radio wave intensity is measured multiple times . The congestion status includes a plurality of representative values of congestion rates obtained at different points for each of the plurality of specific frequency channels.

FIG. 1 is a block diagram of a measurement display system of one embodiment. FIG. 2 is a diagram showing an example of a screen displayed by the measurement display system. FIG. 3 is a block diagram of an example of a wireless communication system (load control system). FIG. 4 is an explanatory diagram of the measurement display system. FIG. 5 is a diagram showing an example of a screen displayed by the measurement display system. FIG. 6 is a diagram showing an example of a screen displayed by the measurement display system. FIG. 7 is a diagram showing an example of a screen displayed by the measurement display system. FIG. 8 is a diagram showing an example of a screen displayed by the measurement display system. FIG. 9 is a flow chart of the operation of the measurement display system.

1. Embodiments 1.1 Overview FIG. 1 shows a measurement display system 10 that implements the display method of one embodiment. The display method of this embodiment includes an acquisition step and a display step. The obtaining step is a step of obtaining a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The displaying step is a step of displaying the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. The measurement display system 10 displays a display screen D10 as shown in FIG. 2 by executing the display method. On the display screen D10 , congestion conditions are displayed in display areas R21 to R26 and display areas R31 to R36.

According to the display method of this embodiment, the congestion status is displayed based on the degree of congestion of each of a plurality of specific frequency channels. Therefore, the user can judge the influence of the surrounding environment on wireless communication by the index of congestion. This allows the user to reliably select an appropriate frequency channel for wireless communication. Therefore, according to the display method of this embodiment, it is possible to set a frequency channel suitable for wireless communication.

1.2 Details The display method of this embodiment will be described in further detail below. The display method of this embodiment is executed by the measurement display system 10 shown in FIG. The measurement display system 10 can be used when installing a wireless communication system that performs wireless communication using radio waves as a medium. In particular, the measurement display system 10 can be used to determine suitable frequency channels for use by the wireless communication system at the location where the wireless communication system is to be installed.

FIG. 3 shows a load control system 100, which is an example of a wireless communication system. The load control system 100 is a system for controlling loads. The load control system 100 includes a management device 200, a controller 300, a plurality of (here, three) relays 400, a plurality of lighting fixtures 500, and a setting system 600, as shown in FIG. In load control system 100, luminaire 500 is the load. In other words, load control system 100 has an aspect as a lighting control system that controls lighting fixtures.

The management device 200 is connected to a plurality of relays 400 via two-wire communication lines. The management device 200 collectively or individually controls the operating states of the plurality of relays 400 via communication lines. Here, the operating state includes an ON state and an OFF state, and the management device 200 performs processing for switching the relay 400 from the ON state to the OFF state and processing for switching the relay 400 from the OFF state to the ON state.

One or more lighting fixtures 500 are connected to each of the plurality of relays 400 . When the plurality of lighting fixtures 500 need to be described individually, they are described as lighting fixtures 501, 502, . . . A plurality of relays 400 are connected to a power source (for example, a commercial power source) that supplies power. 500 supplies. When relay 400 is in the off state, relay 400 does not supply power from the power supply to lighting fixture 500 connected to relay 400 .

The controller 300 is connected to the management device 200 by wire. The controller 300 stores setting information including a plurality of groups A1 to A3 , and based on an instruction from the management device 200, sets a plurality of lighting fixtures 500 each belonging to one of the plurality of groups A1 to A3 . Control is performed for each of a plurality of groups A1 to A3 . For example, based on instructions from the management device 200, the controller 300 controls at least one of dimming and toning of one or more lighting fixtures 500 included in the groups A1 to A3 to be controlled.

A plurality of lighting fixtures 500 are configured to communicate with the setting system 600 and the controller 300 . Each lighting fixture 500 is configured to be able to communicate with a plurality of communication methods. In the present embodiment, communication is performed by a communication method by wireless communication of low-power radio (specific low-power radio) that does not require a license, and by a communication method by wireless communication using infrared rays, which has higher directivity than communication by low-power radio. It is possible. Here, the amount of data that can be transmitted per unit time (for example, one second) is larger in wireless communication using low-power wireless (specified low-power wireless) than in infrared communication. In addition, with regard to low-power radio, specifications such as the frequency band and antenna power to be used are stipulated in each country according to the application. In Japan, low-power radio using radio waves in the 920 MHz band or 420 MHz band is stipulated. In the following description, a communication system based on wireless communication using infrared rays is referred to as an infrared communication system, and a communication system based on wireless communication using low power radio is referred to as a radio wave communication system.

Each lighting fixture 500 receives a signal from the setting system 600 by wireless communication using an infrared communication method. When transmitting information to the setting system 600, each lighting fixture 500 transmits the information by wireless communication using a radio wave communication method. Furthermore, each lighting fixture 500 communicates with the controller 300 by wireless communication using a radio wave communication method.

In the load control system 100, the setting system 600 transmits the first identifier and the second identifier to the controller 300 by radio communication when changing the group affiliation of one lighting fixture 500. FIG. The first identifier is the identifier of the lighting fixture 500 whose group is to be changed. The second identifier is the identifier of the lighting fixture 500 of the group to which the lighting fixture 500 to be changed belongs after the change. The controller 300 uses the first identifier and the second identifier to change the group configuration, that is, change the setting information so that the lighting fixture 500 to be changed belongs to the group to which the lighting fixture 500 with the second identifier belongs. do. When including a new group in the setting information, the setting system 600 transmits the identifier (third identifier) of the lighting device 500 to belong to the new group to the controller 300 by radio communication. The controller 300 uses the third identifier to generate a new group to which the lighting fixture 500 belongs and which is included in the setting information, and updates (changes) the setting information.

As described above, in the load control system 100, the lighting device 500, the controller 300, and the setting system 600 perform wireless communication using radio wave communication. The measurement display system 10 can be used for selecting an appropriate frequency channel for radio communication by the radio wave communication method in the load control system 100 .

The measurement display system 10 includes a display device 20 and a plurality of measurement devices 30, as shown in FIG.

As an example, the measurement display system 10 includes six measurement devices 30 . The six measuring devices 30 are installed at different points P1 to P6 of the facility 700, as shown in FIG.

A facility 700 is a place where a wireless communication system (load control system 100) is planned to be installed. The points P1 to P6 may be points where devices (such as lighting fixtures) that perform wireless communication in the load control system 100 are installed.

In FIG. 4, facility 700 represents one floor of a building. Examples of the facility 700 include, in addition to detached houses, collective housing (dwelling units, common areas), shops, and buildings (whole building, floor). Moreover, the facility 700 may include not only a building but also a building and a site on which the building exists, such as a factory, a park, a hospital, a commercial facility, and the like.

Each measurement device 30 includes a communication section 31 and a processing section 32 . The communication unit 31 and the processing unit 32 can be housed in the same housing.

The communication unit 31 is a communication interface. The communication unit 31 has a function of communicably connecting the measuring device 30 to the display device 20 . The communication unit 31 complies with a predetermined communication protocol. The predetermined communication protocol may be selected from a variety of well-known wired and wireless communication standards (eg, powerline communication protocol, wireless communication protocol, infrared communication protocol, extended HBS protocol, LonTalk® protocol). Examples of wireless communication protocols include a standard for specified low-power radio and a standard for wireless LAN (Local Area Network). Wi-SUN (registered trademark) standards and Wi-SUN HAN (registered trademark) are examples of specified low-power radio standards. Wireless LAN standards include Wi-Fi (registered trademark).

The processing unit 32 is configured to control the overall control of the measuring device 30 , that is, to control the communication unit 31 . The processing unit 32 can be realized by a computer system including one or more processors (microprocessors) and one or more memories. That is, one or more processors function as the processing unit 32 by executing one or more programs (applications) stored in one or more memories. Although the program is pre-recorded in the memory of the processing unit 32 here, it may be provided through an electric communication line such as the Internet or recorded in a non-temporary recording medium such as a memory card.

The processing unit 32 includes a measuring unit F31 and a determining unit F32. The measurement unit F31 and the determination unit F32 do not represent actual configurations, but represent functions realized by the processing unit 32 .

The measurement unit F31 is configured to measure the radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. In particular, in the present embodiment, the measurement unit F31 is configured to use the communication unit 31 to measure the radio wave intensity for each of a plurality of specific frequency channels. The radio field intensity is represented by the strength of radio waves (radio signal) received by the communication unit 31 for each of a plurality of specific frequency channels. From another point of view, the radio wave intensity can be said to be the intensity of the electric field at the location where the communication unit 31 is located.

Here, the plurality of frequency channels are used in radio communication performed by the load control system 100 using radio waves as a medium. As an example, multiple frequency channels are included in the 920 MHz band. Specifically, the plurality of frequency channels are 923.8, 924.0, 924.2, 924.4, 924.6, 924.8, 925.0, 925.2, 925.4, 925.6 , 22 of 925.8, 926.0, 926.2, 926.4, 926.6, 926.8, 927.0, 927.2, 927.4, 927.6, 927.8, 928.0 is the frequency channel of A plurality of specific frequency channels may be two or more frequency channels selected from the plurality of frequency channels. As an example, the specific frequency channels are 923.8, 924.2, 924.6, 925.0, 925.4, 925.8, 926.2, 926.6, 927.0, 927.4 , 927.8 may be 11 frequency channels. Note that all of the multiple frequency channels may be used as multiple specific frequency channels.

In this embodiment, the measuring unit F31 measures the radio wave intensity multiple times for each of the multiple specific frequency channels. For example, the measurement unit F31 measures the radio wave intensity at regular intervals during a prescribed period. As an example, the predetermined period of time may be 10 seconds and the fixed interval may be 0.1 seconds. In this case, 100 measurements are obtained for the radio field strength of one particular frequency channel.

The determination unit F32 is configured to determine the degree of congestion based on the radio wave intensity for each of the plurality of specific frequency channels. For each of the plurality of specific frequency channels, the degree of congestion is determined by the congestion rate calculated from the radio wave intensity. The congestion rate is represented by the rate at which the radio wave intensity is equal to or greater than the threshold when the radio wave intensity is measured multiple times. In this embodiment, the congestion rate is expressed as a percentage. As described above, the measurement unit F31 obtains 100 measurement values for the radio wave intensity of one specific frequency channel. Here, if the number of measured values equal to or greater than the threshold is 15, the congestion rate is 15%. The threshold is appropriately determined in consideration of the possibility of radio field intensity exceeding the threshold affecting wireless communication. The determination unit F32 sets the congestion rate obtained for each of the plurality of specific frequency channels as the congestion degree.

The display device 20 includes an input/output unit 21, a communication unit 22, and a processing unit 23, as shown in FIG. The input/output unit 21, the communication unit 22, and the processing unit 23 can be housed in the same housing. The display device 20 is an information terminal, such as a smart phone. Note that the display device 20 can be realized by a tablet terminal, a portable terminal such as a wearable terminal, or a personal computer.

The input/output unit 21 has an input device for operating the display device 20 . Input devices include, for example, a touchpad and/or one or more buttons. The input/output unit 21 also includes an image display device for displaying visual information. An image display device is a thin display device such as a liquid crystal display or an organic EL display. A touch panel may be configured by the touch pad of the input/output unit 21 and the image display device.

The communication unit 22 is a communication interface. The communication unit 22 has a function of communicably connecting the display device 20 to the measuring device 30 . The communication unit 22 complies with a predetermined communication protocol. The predetermined communication protocol may be selected from a variety of well-known wired and wireless communication standards (eg, powerline communication protocol, wireless communication protocol, infrared communication protocol, extended HBS protocol, LonTalk® protocol). Examples of wireless communication protocols include a standard for specified low-power radio and a standard for wireless LAN (Local Area Network). Wi-SUN (registered trademark) standards and Wi-SUN HAN (registered trademark) are examples of specified low-power radio standards. Wireless LAN standards include Wi-Fi (registered trademark).

The processing unit 23 is configured to control the overall control of the display device 20 , that is, to control the input/output unit 21 and the communication unit 22 . The processing unit 23 can be realized by a computer system including one or more processors (microprocessors) and one or more memories. That is, one or more processors function as the processing unit 23 by executing one or more programs (applications) stored in one or more memories. Although the program is pre-recorded in the memory of the processing unit 23 here, it may be provided through an electric communication line such as the Internet or recorded in a non-temporary recording medium such as a memory card.

The processing unit 23 includes an acquisition unit F21 and a display unit F22. The acquisition unit F21 and the display unit F22 do not represent actual configurations, but represent functions realized by the processing unit 23 .

The acquisition unit F21 is configured to acquire a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. be. That is, the acquiring unit F21 acquires a degree of congestion determined based on the radio field intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium ( acquisition step).

In the present embodiment, the acquisition unit F21 acquires congestion degrees from one or more measurement devices 30 . In the present embodiment, the acquisition unit F21 acquires the degree of congestion from the measuring device 30. FIG. The acquisition unit F21 requests the congestion degree from the measurement device 30 through the communication unit 22 and thereby acquires the congestion degree from the measurement device 30 . Since the measurement display system 10 includes a plurality of measuring devices 30, the acquisition unit F21 acquires congestion degrees from each of the plurality of measuring devices 30. FIG. In this embodiment, the congestion degree of each of a plurality of specific frequency channels is acquired from the measurement devices 30 placed at different points P1 to P6 of the facility 700, and the congestion degree is represented by the congestion rate. That is, congestion rates at different points P1 to P6 are obtained for each specific frequency channel. In addition, the acquisition unit F21 does not request the congestion degree for each measuring device 30, but requests the congestion degree for each specific frequency channel. That is, after acquiring the congestion degree from all the measuring devices 30 for one of the plurality of specific frequency channels, the acquisition unit F21 acquires the congestion degree from all the measuring devices 30 for the next specific frequency channel. get. In this way, the acquisition unit F21 acquires congestion degrees for each of a plurality of specific frequency channels.

The display unit F22 is configured to display the congestion status based on the degree of congestion of each of a plurality of specific frequency channels. That is, the display unit F22 executes a step (display step) of displaying the congestion status based on the degree of congestion of each of the plurality of specific frequency channels.

In this embodiment, the display unit F22 displays the congestion status based on the degree of congestion acquired by the acquisition unit F21. In this embodiment, the display unit F22 displays one or more representative values of congestion rates at one or more points for each of a plurality of specific frequency channels, instead of displaying all the congestion degrees acquired by the acquisition unit F21. indicate. That is, the congestion status includes one or more representative values of congestion rates at one or more locations for each of a plurality of specific frequency channels. Here, the representative value is the highest value (maximum value of the congestion rate) among the congestion rates of 1 or more. In this embodiment, congestion rates at different points P1-P6 are obtained for each of the specific frequency channels. Therefore, the highest congestion rate among the congestion rates at different points P1 to P6 is used as the representative value of the congestion rate. Further, in the present embodiment, the congestion status includes a display that serves as an indication of the degree of congestion. The display that serves as an indication of the degree of congestion is either a recommended mark indicating frequency channels whose use is recommended, or a congestion mark indicating congested frequency channels. In this embodiment, the recommended mark is represented by "o" and the congestion mark is represented by "triangle". If the congestion degree of the specific frequency channel is less than the prescribed value, a recommended mark is displayed, and if the congestion degree of the specific frequency channel is equal to or greater than the prescribed value, the congestion mark is displayed. In this embodiment, since congestion degrees at a plurality of points P1 to P6 are obtained for one specific frequency channel, a representative value of the congestion rate is used as the congestion degree of the specific frequency channel. The prescribed value is appropriately determined in consideration of the feasibility of wireless communication with a degree of congestion equal to or higher than the prescribed value. For example, the default value can be set to 10[%].

In this embodiment, the display unit F22 displays the result display screen D10 (see FIGS. 2 and 5 to 8) for displaying the congestion situation on the image display device of the input/output unit 21. FIG. 2 and FIGS. 5 to 8, the symbols and their accompanying items (pointing lines, arrows, etc.) are described for the purpose of explaining the result display screen D10, and are not included in the result display screen D10 itself. It does not mean that Note that FIGS. 2 and 5 to 8 show an example of displaying the congestion status for six specific frequency channels only for the sake of easy understanding of the explanation.

The result display screen D10 will be described below. The result display screen D10 includes group boxes G11 to G16, labels L11 to L14, and buttons B21 and B22, as shown in FIG.

Group boxes G11-G16 each correspond to a plurality of specific frequency channels. Note that in FIG. 2, group boxes G11 to G16 correspond to six specific frequency channels out of a plurality of specific frequency channels. The group boxes G11 to G16 include radio buttons B11 to B16, (first) display areas R11 to R16, (second) display areas R21 to R26, and (third) display areas R31 to R36, respectively.

Radio buttons B11 to B16 are used to select a specific frequency channel to be used in wireless communication from a plurality of specific frequency channels.

The first display areas R11 to R16 are used to display identification information for identifying a plurality of specific frequency channels. The identification information is, for example, a name exclusively assigned to a particular frequency channel. In FIG. 2, "1CH" is displayed in the first display area R11, "2CH" is displayed in the first display area R12, "3CH" is displayed in the first display area R13, "4CH" is displayed in the first display area R14, and "4CH" is displayed in the first display area R15. "5CH" is displayed, and "6CH" is displayed in the first display area R16.

The second display areas R21-R26 and the third display areas R31-R36 represent the congestion status of the corresponding specific frequency channels. The second display areas R21 to R26 are used to display an indication of the degree of congestion. In FIG. 2, the second display regions R21, R23, R25 and R26 are displayed with recommended marks ("o"), and the second display regions R22 and R24 are displayed with congestion marks ("triangle"). The third display regions R31 to R36 are used to display representative values of congestion rates. In FIG. 2, "1" is displayed in the third display area R31, "15" is displayed in the third display area R32, "1" is displayed in the third display area R33, "100" is displayed in the third display area R34, and "100" is displayed in the third display area R35. "0" is displayed, and "2" is displayed in the third display area R36.

A label L11 is arranged corresponding to the radio buttons B11 to B16, and displays the roles of the radio buttons B11 to B16. In FIG. 2, the label L11 displays the character string "selection". Labels L12 are arranged corresponding to the first display regions R11 to R16, and display explanations of the display contents of the first display regions R11 to R16. In FIG. 2, the label L12 displays the character string "channel". The label L13 is arranged corresponding to the second display areas R21 to R26, and displays an explanation of the display contents of the second display areas R21 to R26. In FIG. 2, the label L13 displays a character string "survey result". Labels L14 are arranged corresponding to the third display areas R31 to R36, and display explanations of the display contents of the third display areas R31 to R36. In FIG. 2, the label L14 displays a character string "level".

The button B21 is a button for ending the display of the result display screen D10. When the button B21 is operated, the display section F22 terminates the display of the result display screen D10. Further, when the acquisition unit F21 has not acquired the congestion degree from all of the specific frequency channels, the task of acquiring the congestion degree is stopped. The button B22 is a button for determining use of a specific frequency channel being selected by the radio buttons B11 to B16. When the button B22 is operated, the display device 20 notifies the load control system 100 of information on the specific frequency channel being selected by the radio buttons B11 to B16. The load control system 100 may set the frequency channel according to the notification from the display device 20 .

The display unit F22 updates the congestion status of the specific frequency channel whose congestion degree is acquired by the acquisition unit F21 each time the acquisition unit F21 acquires the congestion degree. That is, the display unit F22 displays the result display screen D10 even if the acquisition unit F21 does not acquire the congestion degrees of all the specific frequency channels, and displays the result display screen every time the acquisition unit F21 acquires the congestion degrees. Update D10. More specifically, the display unit F22 displays a result display screen D10 as shown in FIG. 5 when the acquisition unit F21 has not acquired the congestion degree of any specific frequency channel. In the result display screen D10 of FIG. 5, neither the recommended mark nor the congestion mark is displayed in the second display regions R21 to R26, and the degree of congestion is not displayed in the third display regions R31 to R36. . That is, the congestion status is not displayed on the result display screen D10. Then, the display unit F22 updates the congestion status of the specific frequency channel whose congestion degree is acquired by the acquisition unit F21 each time the acquisition unit F21 acquires the congestion degree. FIG. 6 shows the result display screen D10 when the congestion degrees of specific frequency channels corresponding to "1CH" and "2CH" are acquired by the acquisition unit F21. As is clear from FIG. 6, the second display areas R21 and R22 and the third display areas R31 and R32 are updated in the specific frequency channels corresponding to "1CH" and "2CH". In other words, a recommended mark (“◯”) is displayed in the second display region R21, and a congestion mark (“Δ”) is displayed in the second display region R22. Also, "1" is displayed in the third display region R31, and "15" is displayed in the third display region R32. Then, when the congestion degrees of all the specific frequency channels are acquired by the acquisition unit F21, as shown in FIG. 2, the congestion status of all the specific frequency channels is displayed.

Furthermore, the display unit F22 is configured to display a recommendation to use a specific frequency channel with the lowest degree of congestion among the plurality of specific frequency channels. In particular, the display unit F22 is configured to display a recommendation to use a specific frequency channel whose congestion degree is less than a specified value and whose congestion degree is the lowest among a plurality of specific frequency channels. In other words, the display unit F22 selects the specific frequency channel with the lowest congestion degree as the frequency channel recommended for use from the specific frequency channels whose congestion degree is less than the specified value among the plurality of specific frequency channels.

The display unit F22 displays a screen D11 showing frequency channels recommended for use, as shown in FIG. In FIG. 7, the screen D11 is displayed superimposed on the result display screen D10. The screen D11 includes a display area R41 for displaying information about frequency channels recommended for use. For example, the degree of congestion (representative value of the congestion rate in this embodiment) is "1" for the frequency channel CH1, as shown in FIG. The frequency channel of CH2 is "15". The frequency channel of CH3 is "1". The frequency channel of CH4 is "100". The frequency channel of CH5 is "0". The frequency channel of CH6 is "2". In this case, the display section F22 selects a frequency channel (recommended channel) to be used from frequency channels whose degree of congestion is less than a specified value (here, 10), that is, four frequency channels CH1, CH3, CH5, and CH6. select. In other words, the frequency channel recommended for use is selected from the frequency channels with the recommended mark on the display section F22. Here, the frequency channel CH5 has the lowest congestion degree of zero. Therefore, the display unit F22 selects the frequency channel CH5 as the frequency channel recommended for use, and on the screen D11, a message such as "5CH is recommended based on the results of this confirmation" is displayed in the display area R41. .

On the other hand, the display unit F22 is configured to display a recommendation to reacquire the congestion degree of each of the plurality of specific frequency channels when the congestion degree of each of the plurality of specific frequency channels is not less than the prescribed value. . In this case, the display unit F22 displays a screen D12 that recommends reacquisition of the degree of congestion, as shown in FIG. In FIG. 8, the screen D12 is displayed superimposed on the result display screen D10. The screen D12 includes a display area R42 for displaying a message recommending reacquisition of the congestion degree. On the screen D12, a message such as "There is no channel that can be recommended based on the result of this check. Please check again." is displayed in the display area R42. This is because it is considered difficult to establish stable wireless communication unless there is a specific frequency channel with a degree of congestion less than a specified value. In such a case, acquisition of congestion degrees of a plurality of specific frequency channels is prompted again. Note that in FIG. 8, a screen that recommends re-acquisition of the congestion degree is displayed as the screen D12, but instead, a screen prompting the user to select a desired frequency channel from among a plurality of frequency channels is displayed. may be displayed.

1.3 Operation The operation of the measurement display system 10 will be briefly described below with reference to FIG.

First, when an operation to start displaying the congestion status is performed on the display device 20, the display unit F22 displays the result display screen D10 on the image display device of the input/output unit 21, as shown in FIG.

Also, in the display device 20, the acquisition unit F21 transmits a request for the degree of congestion of a specific frequency channel to each measuring device 30 (S11).

In the measurement device 30, in response to the request from the acquisition unit F11 of the display device 20, the measurement unit F31 measures the radio wave intensity for the specific frequency channel for which the degree of congestion is requested (S12), and the determination unit F32 determines the degree of congestion ( congestion rate) is determined (S13). The measuring device 30 transmits the congestion degree determined by the determination unit F32 to the display device 20 .

In the display device 20, the obtaining unit F21 obtains the degree of congestion of a specific frequency channel from each measuring device 30. FIG. Then, the display unit F22 displays the congestion status on the result display screen D10, as shown in FIGS. 2 and 6, based on the degree of congestion of the specific frequency channel in each measuring device 30 (S14).

Here, if the acquisition unit F21 has not acquired the congestion degrees of all the specific frequency channels (S15: No), the process returns to step S11. Then, in step S11, the acquiring unit F21 transmits to each measuring device 30 a request for the degree of congestion of a specific frequency channel for which the degree of congestion has not yet been acquired.

On the other hand, if the congestion degrees of all the specific frequency channels have been acquired by the acquisition unit F21 (S15: Yes), as shown in FIG. Is displayed. In addition, the display unit F22 determines whether or not there is a specific frequency channel whose degree of congestion is less than a specified value (S16).

Here, if there is a specific frequency channel whose congestion degree is less than the prescribed value (S16: Yes), the display unit F22 displays a screen D11 as shown in FIG. recommended channel) is displayed (S17).

On the other hand, if there is no specific frequency channel whose congestion degree is less than the specified value (S16: No), the display unit F22 displays a screen D12 as shown in FIG. 8, and recommends reacquisition of the congestion degree. (S18).

1.4 Summary The display device 20 described above includes an acquisition unit F21 and a display unit F22. The acquisition unit F21 is configured to acquire a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. be. The display unit F22 is configured to display the congestion status based on the degree of congestion of each of a plurality of specific frequency channels. According to this display device 20, it is possible to set a frequency channel suitable for wireless communication.

In other words, it can be said that the display device 20 executes the following method (display method). The display method includes an acquisition step and a display step. The obtaining step is a step of obtaining a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The displaying step is a step of displaying the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. According to this display method, as with the display device 20, it is possible to set a frequency channel suitable for wireless communication.

The display method is implemented by one or more processors executing a program (computer program). This program is a program for causing one or more processors to execute the display method. According to such a program, it is possible to set a frequency channel suitable for wireless communication, as with the display method.

Moreover, the measurement device 30 described above includes a measurement unit F31 and a determination unit F32. The measurement unit F31 is configured to measure the radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determination unit F32 is configured to determine the degree of congestion based on the radio wave intensity for each of the plurality of specific frequency channels. According to this measuring device 30, it is possible to set a suitable frequency channel for wireless communication.

In other words, it can be said that the measurement device 30 executes the following method (measurement method). The measuring method includes a measuring step and a determining step. The measuring step is a step of measuring radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determining step is a step of determining the degree of congestion based on the radio wave intensity for each of the plurality of specific frequency channels. According to this measurement method, like the measurement device 30, it is possible to set a suitable frequency channel for wireless communication.

The measurement method is implemented by one or more processors executing a program (computer program). This program is a program for causing one or more processors to execute the measurement method. According to such a program, it is possible to set a suitable frequency channel for wireless communication, as with the measurement method.

Moreover, the measurement display system 10 described above includes a measurement section F31, a determination section F32, and a display section F22. The measurement unit F31 is configured to measure the radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determination unit F32 is configured to determine the degree of congestion based on the radio wave intensity for each of the plurality of specific frequency channels. The display unit F22 is configured to display the congestion status based on the degree of congestion of each of a plurality of specific frequency channels. According to this measurement display system 10, it is possible to set a suitable frequency channel for wireless communication.

In other words, it can be said that the measurement display system 10 executes the following method (measurement display method). The measurement display method includes a measurement step, a determination step, and a display step. The measuring step is a step of measuring radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determining step is a step of determining the degree of congestion based on the radio wave intensity for each of the plurality of specific frequency channels. The displaying step is a step of displaying the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. According to this measurement display method, like the measurement display system 10, it is possible to set a frequency channel suitable for wireless communication.

The measurement display method is implemented by one or more processors executing a program (computer program). This program is a program for causing one or more processors to execute the measurement display method. According to such a program, it is possible to set a suitable frequency channel for wireless communication, as with the measurement display method.

2. Modifications Embodiments of the present disclosure are not limited to the embodiments described above. The above-described embodiment can be modified in various ways according to design and the like, as long as the object of the present disclosure can be achieved. Modifications of the above embodiment are listed below.

In the above embodiments, each measuring device 30 obtains one congestion rate for each particular frequency channel. In this case, the degree of congestion matches the congestion rate. However, the degree of congestion may be a sequence including congestion rates of two or more, or may be a value calculated from two or more congestion rates. In one variation, each measurement device 30 may obtain multiple (two or more) congestion factors for each particular frequency channel. That is, each measuring device 30 may obtain the congestion rate multiple times for the same frequency channel. In this case, multiple congestion rates at the same point are obtained for each of multiple specific frequency channels. The congestion status may then include representative values of a plurality of congestion rates at the same location for each of a plurality of specific frequency channels.

In the above embodiment, congestion rates at multiple points are obtained for each specific frequency channel. The congestion status displayed on the display section F22 includes representative values of a plurality of congestion rates obtained for a plurality of different points for each of a plurality of specific frequency channels. In order to obtain the congestion rate at a plurality of points for each specific frequency channel, in the above embodiment, the measuring devices 30 are installed at the plurality of points (see P1 to P6 in FIG. 4). In one variation, a single measuring device 30 may be used to determine the congestion rate at multiple points. That is, it is not essential to use multiple measuring devices 30 .

In short, the congestion status may include one or more representative values of congestion rates at one or more locations for each of a plurality of specific frequency channels. The representative value may be a mathematically determined value such as an average value, mode value, minimum value, or maximum value of a plurality of congestion rates. Considering the certainty of establishing wireless communication, it is preferable to use the maximum value, that is, the value at the time of maximum congestion, as the representative value.

In the above embodiment, the degree of congestion is evaluated by the congestion rate. Here, the congestion rate is represented by the rate at which the radio wave intensity is equal to or greater than the threshold when the radio wave intensity is measured multiple times. In a modified example, the congestion rate may be a representative value of radio wave intensity when the radio wave intensity is measured multiple times. The representative value may be a mathematically determined value such as an average value, mode value, minimum value, or maximum value of a plurality of congestion rates. However, it is more effective to set the frequency channel suitable for wireless communication if the congestion rate is expressed by the rate at which the radio wave intensity becomes equal to or greater than the threshold when the radio wave intensity is measured multiple times.

In the above embodiment, the congestion status includes one or more representative values of congestion rates at one or more locations for each of a plurality of specific frequency channels. However, the congestion status may include the degree of congestion itself instead of the representative value of the congestion rate. In addition, although the congestion status includes an indication of the degree of congestion, it does not necessarily have to include an indication of the degree of congestion.

In the above embodiment, the degree of congestion is obtained from the measuring device 30, but in the wireless communication system (load control system 100), the measuring device 30 You may give the function as. Further, the function of the measuring device 30 may be provided not only to devices that perform wireless communication in a wireless communication system, but also to devices included in the wireless communication system.

In a modified example, the acquiring unit F21 may acquire the degree of congestion based on the radio wave intensity obtained from the measuring device 30 instead of acquiring the degree of congestion from the measuring device 30 . That is, the acquisition unit F21 may have a function as the determination unit F32.

In one variation, display device 20 and measurement device 30 may be a single device. In other words, the display device 20 may have the function as the measurement device 30 . In this case, the acquisition unit F21 can be omitted.

In a modified example, the plurality of frequency channels is not limited to the 920 MHz band, and may be appropriately determined in consideration of the frequency band (eg, 420 MHz) used for wireless communication. Also, the interval between frequency channels is not limited to 0.2 MHz, and may be determined as appropriate according to the frequency band.

In one modified example, the measurement display system 10 may be configured by a plurality of computers. For example, the functions of the measurement display system 10 (in particular, the measurement unit F31, the determination unit F32, and the display unit F22) may be distributed among multiple devices. Furthermore, at least part of the functions of the measurement display system 10 may be realized by, for example, the cloud (cloud computing).

The execution subject of the measurement display system 10 described above includes a computer system. A computer system has a processor and memory as hardware. A processor executes a program recorded in the memory of the computer system, thereby realizing the function of the measurement display system 10 in the present disclosure as an execution entity. The program may be prerecorded in the memory of the computer system, or may be provided through an electric communication line. Also, the program may be provided by being recorded on a non-temporary recording medium such as a computer system-readable memory card, optical disk, hard disk drive, or the like. A processor in a computer system consists of one or more electronic circuits including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). A field programmable gate array (FGPA), an ASIC (application specific integrated circuit), or a reconfigurable field programmable gate array (FGPA) or ASIC (application specific integrated circuit), which can be programmed after the LSI is manufactured, or which can reconfigure junction relationships inside the LSI or set up circuit partitions inside the LSI. Logical devices can also be used for the same purpose. A plurality of electronic circuits may be integrated into one chip, or may be distributed over a plurality of chips. A plurality of chips may be integrated in one device, or may be distributed in a plurality of devices.

3. Aspects As is clear from the above embodiments and modifications, the present disclosure includes the following aspects. In the following, reference numerals are attached with parentheses only for the purpose of clarifying correspondence with the embodiments.

A first aspect is a display method including an acquisition step and a display step. The obtaining step is a step of obtaining a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The displaying step is a step of displaying the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. According to this aspect, it is possible to set a frequency channel suitable for wireless communication.

The second aspect is based on the display method of the first aspect. In a second aspect, the displaying step displays a recommendation to use a specific frequency channel with the lowest degree of congestion among the plurality of specific frequency channels. According to this aspect, it becomes easy to select a frequency channel suitable for wireless communication.

A third aspect is based on the display method of the first or second aspect. In a third aspect, the displaying step displays a recommendation for use of a specific frequency channel whose congestion degree is less than a specified value and whose congestion degree is the lowest among the plurality of specific frequency channels. According to this aspect, it becomes easier to set an appropriate frequency channel through wireless communication.

A fourth aspect is based on the display method of the third aspect. In a fourth aspect, the displaying step includes displaying a recommendation to reacquire the congestion degree of each of the plurality of specific frequency channels when the congestion degree of each of the plurality of specific frequency channels is not less than the prescribed value. I do. According to this aspect, it is possible to set an appropriate frequency channel by wireless communication.

A fifth aspect is based on the display method of any one of the first to fourth aspects. In a fifth aspect, the displaying step updates the congestion status of the specific frequency channel for which the congestion degree is obtained in the obtaining step each time the congestion degree is obtained in the obtaining step. According to this aspect, it is possible to set an appropriate frequency channel through wireless communication without waiting for the acquisition of all congestion degrees to be completed.

A sixth aspect is based on the display method of any one of the first to fifth aspects. In a sixth aspect, for each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate obtained from radio wave intensity. According to this aspect, it is possible to set an appropriate frequency channel by wireless communication.

The seventh aspect is based on the display method of the sixth aspect. In a seventh aspect, the congestion status includes one or more representative values of congestion rates at one or more locations for each of the plurality of specific frequency channels. According to this aspect, it is possible to set an appropriate frequency channel by wireless communication.

The eighth aspect is based on the display method of the sixth aspect. In an eighth aspect, the congestion status includes representative values of a plurality of congestion rates at the same point for each of the plurality of specific frequency channels. According to this aspect, it is possible to set an appropriate frequency channel by wireless communication.

The ninth aspect is based on the display method of the sixth aspect. In a ninth aspect, the congestion status includes a plurality of representative values of congestion rates obtained at different points for each of the plurality of specific frequency channels. According to this aspect, it is possible to set an appropriate frequency channel by wireless communication.

A tenth aspect is based on the display method of any one of the seventh to ninth aspects. In a tenth aspect, the representative value is a maximum value. According to this aspect, it is possible to set an appropriate frequency channel by wireless communication.

The eleventh aspect is based on the display method of any one of the sixth to tenth aspects. In the eleventh aspect, the congestion rate is represented by the rate at which the radio wave intensity becomes equal to or greater than a threshold when the radio wave intensity is measured multiple times. According to this aspect, it is possible to set an appropriate frequency channel by wireless communication.

A twelfth aspect is a program for causing one or more processors to execute the display method of any one of the first to eleventh aspects. According to this aspect, it is possible to set a frequency channel suitable for wireless communication.

A thirteenth aspect is a display device (20) comprising an acquisition section (F21) and a display section (F22). The acquisition unit (F21) acquires a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. configured to The display unit (F22) is configured to display the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. According to this aspect, it is possible to set a frequency channel suitable for wireless communication.

A fourteenth aspect is a measuring device (30) comprising a measuring section (F31) and a determining section (F32). The measurement unit (F31) is configured to measure radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determining unit (F32) is configured to determine a degree of congestion based on radio wave intensity for each of the plurality of specific frequency channels. According to this aspect, it is possible to set a frequency channel suitable for wireless communication.

A fifteenth aspect is a measurement display system (10), comprising a measurement section (F31), a determination section (F32), and a display section (F22). The measurement unit (F31) is configured to measure radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium. The determining unit (F32) is configured to determine a degree of congestion based on radio wave intensity for each of the plurality of specific frequency channels. The display unit (F22) is configured to display the congestion status based on the degree of congestion of each of the plurality of specific frequency channels. According to this aspect, it is possible to set a frequency channel suitable for wireless communication.

10 measurement display system 20 display device 30 measurement device F21 acquisition unit F22 display unit F31 measurement unit F32 determination unit

Claims (13)

an acquiring step of acquiring a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for radio communication using radio waves as a medium;
a display step of displaying a congestion situation based on the degree of congestion of each of the plurality of specific frequency channels;
including
For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate represented by the ratio of radio field strength exceeding a threshold when radio field strength is measured multiple times,
In the displaying step, out of the plurality of specific frequency channels, the degree of congestion is less than a specified value, and display is made to recommend use of a specific frequency channel with the lowest degree of congestion.
Display method. The displaying step displays a recommendation to reacquire the congestion degree of each of the plurality of specific frequency channels when the congestion degree of each of the plurality of specific frequency channels is not less than the specified value.
The display method according to claim 1. In the displaying step, each time the obtaining step obtains the congestion degree, the congestion status of the specific frequency channel for which the congestion degree is obtained in the obtaining step is updated.
The display method according to claim 1 or 2. an acquiring step of acquiring a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for radio communication using radio waves as a medium;
a display step of displaying a congestion situation based on the degree of congestion of each of the plurality of specific frequency channels;
including
For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate , which is expressed by the rate at which the radio field strength is equal to or greater than a threshold when the radio field strength is measured multiple times ,
The congestion status includes representative values of a plurality of congestion rates obtained for a plurality of different points for each of the plurality of specific frequency channels,
Display method. The congestion status includes one or more representative values of congestion rates at one or more points for each of the plurality of specific frequency channels,
The display method according to any one of claims 1 to 4. The congestion status includes representative values of a plurality of congestion rates at the same point for each of the plurality of specific frequency channels,
The display method according to any one of claims 1 to 5. The representative value is the highest value,
The display method according to any one of claims 4-6. for causing one or more processors to execute the display method according to any one of claims 1 to 7,
program. an acquisition unit that acquires a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium;
a display unit that displays congestion status based on the degree of congestion of each of the plurality of specific frequency channels;
with
For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate represented by the ratio of radio field strength exceeding a threshold when radio field strength is measured multiple times,
The display unit displays a recommendation to use a specific frequency channel whose congestion degree is less than a specified value and whose congestion degree is the lowest among the plurality of specific frequency channels.
display device. an acquisition unit that acquires a degree of congestion determined based on radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium;
a display unit that displays congestion status based on the degree of congestion of each of the plurality of specific frequency channels;
with
For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate, which is expressed by the rate at which the radio field strength is equal to or greater than a threshold when the radio field strength is measured multiple times,
The congestion status includes representative values of a plurality of congestion rates obtained for a plurality of different points for each of the plurality of specific frequency channels,
display device. a measurement unit that measures radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium;
a determination unit that determines a degree of congestion based on radio field intensity for each of the plurality of specific frequency channels;
with
the congestion status is displayed on the display unit based on the degree of congestion of each of the plurality of specific frequency channels;
For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate, which is expressed by the rate at which the radio field strength is equal to or greater than a threshold when the radio field strength is measured multiple times,
The congestion status includes representative values of a plurality of congestion rates obtained for a plurality of different points for each of the plurality of specific frequency channels,
measuring device. a measurement unit that measures radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium;
a determination unit that determines a degree of congestion based on radio field intensity for each of the plurality of specific frequency channels;
a display unit that displays congestion status based on the degree of congestion of each of the plurality of specific frequency channels;
with
For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate represented by the ratio of radio field strength exceeding a threshold when radio field strength is measured multiple times,
The display unit displays a recommendation to use a specific frequency channel whose congestion degree is less than a specified value and whose congestion degree is the lowest among the plurality of specific frequency channels.
Measurement display system. a measurement unit that measures radio wave intensity for each of a plurality of specific frequency channels included in a plurality of frequency channels used for wireless communication using radio waves as a medium;
a determination unit that determines a degree of congestion based on radio field intensity for each of the plurality of specific frequency channels;
a display unit that displays congestion status based on the degree of congestion of each of the plurality of specific frequency channels;
with
For each of the plurality of specific frequency channels, the degree of congestion is determined by a congestion rate, which is expressed by the rate at which the radio field strength is equal to or greater than a threshold when the radio field strength is measured multiple times,
The congestion status includes representative values of a plurality of congestion rates obtained for a plurality of different points for each of the plurality of specific frequency channels,
Measurement display system.

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