Noise monitoring system, noise monitoring method, and noise monitoring program

Abstract

To identify equipment that generates serious noise from a detailed display of noise conditions.SOLUTION: A noise monitoring system includes: a plurality of measurement instruments 5 each measuring noise of multiple pieces of equipment 6; a gateway terminal 4 which transmits noise data measured by the measurement instruments 5; a calculation unit which calculates degrees of influence of the equipment 6 based on an influence coefficient; a storage unit which stores the noise data measured by the measurement instruments 5 and stores the degrees of influence calculated by the calculation unit; a display control unit which causes a display unit to display degrees of influence of the equipment 6 on the noise data, calculated based on the noise data measured by the measurement instruments 5, for each equipment; and an input unit which inputs the influence coefficient for calculating the degrees of influence.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a noise monitoring system, a noise monitoring method, and a noise monitoring program. [Background technology]

[0002] Many generators and other equipment are operating within the factory premises, and various noises, including their operation, are transmitted to the surrounding area. If no measures are taken, the above-mentioned generated noises will propagate to the surrounding area and become noise, raising concerns that they may cause unexpected health damage or disrupt the lives of nearby residents.

[0003] Patent document 1 describes a noise source detection system that uses publicly known technology to identify the noise source (noise source) and display an image of it, thereby identifying the noise source among construction machinery. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-44083 Summary of the Invention [Problem to be solved by the invention]

[0005] However, unlike construction machinery, the noise generated by factory facilities (buildings) varies depending on various factors, such as the type of machinery inside, its operation, operation time, and the thickness of the walls of the facility. This makes it difficult to take appropriate measures for the facility, such as installing soundproof walls.

[0006] Therefore, the present invention aims to not only display the noise situation to maintenance personnel and others who operate client terminals, but also to display the information in a way that allows them to identify the facility that is the source of the noise and analyze the noise situation. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the noise monitoring system of the present invention is characterized by having a plurality of measuring instruments that measure the noise of a plurality of pieces of equipment, respectively, a gateway terminal that transmits the noise data measured by the measuring instruments, a calculation unit that calculates the influence of each piece of equipment based on an influence coefficient, a memory unit that stores the noise data measured by each of the measuring instruments and stores the influence calculated by the calculation unit, a display control unit that displays on a display unit for each piece of equipment the influence of each piece of equipment on the noise data calculated based on the noise data measured by the measuring instruments, and an input unit that inputs the influence coefficient used to calculate the influence.

[0008] The noise monitoring method of the present invention is a noise monitoring method executed by a noise monitoring system that includes a plurality of measuring instruments that respectively measure the noise of a plurality of pieces of equipment, and a gateway terminal that transmits the noise data measured by the measuring instruments, and is characterized by comprising the steps of: an input unit inputting an influence coefficient for calculating the influence; a calculation unit calculating the influence of each piece of equipment based on the influence coefficient; storing the noise data measured by each of the measuring instruments and storing the influence calculated by the calculation unit; and a display control unit displaying, for each piece of equipment, the influence of each piece of equipment on the noise data calculated based on the noise data measured by the measuring instruments.

[0009] The noise monitoring system of the present invention is characterized by having a plurality of measuring instruments that measure the noise of a plurality of pieces of equipment, respectively; a gateway terminal that transmits the noise data measured by the measuring instruments; a calculation unit that calculates the influence of each piece of equipment based on an influence coefficient and calculates a cumulative influence for each piece of equipment by adding up the influence of the equipment and the influence of equipment that has a higher influence than the equipment in question; a display control unit that displays on a display unit for each piece of equipment the cumulative influence of each piece of equipment calculated based on the noise data measured by the measuring instruments; and an input unit that inputs the influence coefficient for calculating the influence.

[0010] The noise monitoring program of the present invention causes a computer to execute the following steps: inputting an influence coefficient for calculating the influence; storing noise data measured by each measuring instrument; calculating the influence of each piece of equipment from the noise data of each piece of equipment measured by each measuring instrument based on the influence coefficient and storing the calculated influence in a memory unit; and displaying, for each piece of equipment, the influence of each piece of equipment on the noise data calculated based on the noise data measured by the measuring instrument. Other means will be described in the detailed description of the invention. [Effects of the Invention]

[0011] According to the present invention, by displaying the detailed noise situation, it is possible to grasp which equipment is causing the problem with noise, and it becomes possible to take measures such as strengthening the equipment or installing soundproof walls. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a configuration diagram of a noise monitoring system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a diagram illustrating a connection between a measuring instrument and a gateway terminal. [Figure 3] FIG. 2 is a block diagram of a client terminal. [Figure 4] FIG. 2 is a block diagram of a server. [Figure 5] FIG. 1 is a sequence diagram of a noise monitoring system. [Figure 6] This is a model diagram of a case where sound level meters are installed for multiple pieces of equipment. [Figure 7] FIG. 1 is a diagram showing the relationship between each piece of equipment and measuring instruments installed in the vicinity thereof. [Figure 8] 10 is a graph showing an influence analysis of a sound receiving point. [Figure 9] This is a table that lists the detailed names of each piece of equipment and ranks the degree of impact of each piece of equipment. [Figure 10] FIG. 10 is a diagram showing an example of a display screen for the degree of impact when a countermeasure is taken for equipment. [Figure 11]FIG. 10 is a diagram illustrating another example of the display screen of the client terminal. [Figure 12] 10 is a flowchart of a noise monitoring server-side program. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The noise monitoring system of this embodiment measures the noise of each facility using a sensor, transfers the sensor data to the staff's client terminal using a transfer device, and displays the measured noise status. The staff managing the facility analyzes the displayed content in detail and takes measures for the facility (building), such as installing soundproof walls. The noise monitoring system highlights the display by flashing or lighting, and displays the analysis results of the facility's impact level by specifying the display. This allows the staff managing the facility to take measures (such as installing soundproof walls).

[0014] FIG. 1 is a configuration diagram of a noise monitoring system according to this embodiment. The noise monitoring system includes a plurality of combinations of measuring instruments 5a-5f and gateway terminals 4a-4f, and a server 2 communicably connected to these. The server 2 is connected via the Internet 9 to a mail server 3 and a plurality of client terminals 1a-1d.

[0015] When there is no need to distinguish between measuring instruments 5a to 5f, they will simply be referred to as measuring instrument 5. Measuring instrument 5 is a sound level meter that senses ambient sounds at predetermined time intervals and measures the noise by converting the sounds into frequency, etc. Furthermore, these measuring instruments 5a to 5d are intended to measure noise from multiple pieces of equipment 6a to 6d, such as factory buildings.

[0016] When there is no need to distinguish between the gateway terminals 4a to 4f, they will simply be referred to as gateway terminal 4. Measuring instrument 5 and gateway terminal 4 are connected via a serial communication wire and an analog AC wire. Details of the connection between measuring instrument 5 and gateway terminal 4 are shown in Figure 2, which will be described later. Gateway terminal 4 transfers data from measuring instrument 5 to server 2. Gateway terminal 4 is also composed of hardware such as a CPU (Central Processing Unit) 21 and memory. Software such as a general-purpose OS (Operating System) and application programs is installed on gateway terminal 4, and it can be designed to suit the environment by changing the application programs.

[0017] The gateway terminal 4 and the server 2 are preferably connected by a dedicated line, but may also be connected by a normal network connection or a virtual private network (VPN). The server 2 stores data transmitted from the gateway terminal 4 and transmits necessary information in response to instructions from the client terminal 1. The server 2 is composed of hardware such as a CPU, memory, and storage unit. Software such as a general-purpose OS and application programs is installed on the server 2. The CPU of the server 2 executes the programs to implement the logic blocks of a calculation unit 28 and a display control unit 29. The calculation unit 28 calculates the influence of each piece of equipment 6 based on the influence coefficient. The display control unit 29 displays the influence of each piece of equipment 6 on the noise data calculated based on the noise data measured by the measuring instrument 5 on the display units of the client terminals 1a to 1d for each piece of equipment 6. The display control unit 29 displays each influence for each piece of equipment 6 in descending order on the display unit. The notification unit 291 issues a warning to the user of the client terminal 1 if the noise received from the gateway terminal 4 satisfies a predetermined condition.

[0018] When there is no need to distinguish between the client terminals 1a to 1d, they will simply be referred to as client terminal 1. The client terminal 1 is a computer operated by a maintenance worker or an attendant. The client terminal 1 is connected to a server 2 via the Internet 9. As shown in FIG. 3, the client terminal 1 is composed of hardware such as a CPU 11, memory, a display unit 16, and a storage unit 17. The display unit 16 is, for example, an LCD display, and displays data sent from the server 2, showing the noise status of the facility. This enables the maintenance worker or attendant to analyze which facilities should take measures such as installing soundproof walls.

[0019] FIG. 2 is a diagram showing the connection between measuring device 5 and gateway terminal 4. As shown in FIG. A microphone 51 is connected to the measuring instrument 5 via a microphone extension cable. This microphone 51 is installed at a desired measurement point, for example, near a rotating machine that is a noise source within a facility, and measures the noise emitted from this noise source.

[0020] The measuring device 5 and the gateway terminal 4 are connected via two systems: a wired serial communication system and an analog AC system. The gateway terminal 4 transmits a command requesting transmission of a measurement value to the measuring instrument 5 via a wired serial communication system. The gateway terminal 4 then receives decibel data in text format or the like from the measuring instrument 5. The measuring instrument 5 converts the audio information recorded by the microphone 51 into a measured decibel value and transmits it.

[0021] An A / D converter 52 is connected to the analog AC system. The A / D converter 52 converts analog audio information into digital audio data. The gateway terminal 4 transmits a request to send recorded data to the measuring instrument 5 via the wired serial communication system. Thereafter, the gateway terminal 4 receives the digital audio data from the measuring instrument 5 and the A / D converter 52. Digital audio data is time-series data of sound pressure, and because it contains a large amount of information, it can be converted into a WAV file, for example, and listened to later.

[0022] By providing two systems, a serial communication system and an analog AC system, it is possible to record audio data for a person to check the noise level at the site, along with the decibel data that is essential for data processing.

[0023] Previous in-house products and specifications had issues such as the high cost of the high-performance signal processing devices incorporated into equipment diagnostic systems and the lack of design flexibility due to the dedicated terminals. This embodiment uses a combination of a measuring instrument 5 with only basic functions and a low-cost gateway terminal 4, enabling the construction of a system with high design flexibility and resolving the above issues.

[0024] FIG. 3 is a block diagram of the client terminal 1. As shown in FIG. The client terminal 1 includes hardware such as a CPU 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, an input unit 14, a communication unit 15, a display unit 16, and a storage unit 17.

[0025] The CPU 11 is a central processing unit that controls the client terminal 1, and executes a noise monitoring application program 171 stored in the storage unit 17, which will be described later, to realize a predetermined noise monitoring function.

[0026] The ROM 12 is a non-volatile readable memory, and stores, for example, a BIOS (Basic I / O System), etc. The RAM 13 is a volatile readable and writable memory, and is used by the CPU 11 as a temporary storage area for programs.

[0027] The input unit 14 is, for example, a keyboard, mouse, or touch panel, and is used to input information. The communication unit 15 is, for example, a NIC (Network Interface Card), and transmits and receives information to and from other devices via the Internet 9. The staff member uses the input unit 14 to input the impact coefficient of the noise measured by each measuring device 5. The calculation unit 28 of the server 2 then calculates the impact of the noise measured by each measuring device 5 based on the impact coefficient of the noise measured by each measuring device 5 and the noise level measured by the measuring device 5. However, this is not limited thereto, and the calculation unit 28 of the server 2 may also calculate the impact of the noise generated by each piece of equipment 6 based on the impact coefficient of the noise generated by each piece of equipment 6 and the noise level of each piece of equipment 6 stored in the memory unit 27 of the server 2, and is not limited thereto.

[0028] The display unit 16 is, for example, a liquid crystal display, and displays data transmitted from the server 2. The storage unit 17 is, for example, an SSD (Solid State Drive), and stores a noise monitoring application program 171 therein.

[0029] FIG. 4 is a block diagram of the server 2. The server 2 includes hardware such as a CPU 21, a ROM 22, a RAM 23, an input unit 24, a communication unit 25, and a storage unit 27.

[0030] The CPU 21 is a central processing unit that controls the server 2, and embodies a predetermined noise monitoring function by executing a noise monitoring server-side program 274 stored in the storage unit 27, which will be described later. The operation of the noise monitoring server-side program 274 will be described later with reference to FIG. 12.

[0031] The ROM 22 is a non-volatile readable memory, and stores, for example, a BIOS, etc. The RAM 23 is a volatile readable and writable memory, and is used by the CPU 21 as a temporary storage area for programs.

[0032] The input unit 24 is, for example, a keyboard, a mouse, a touch panel, etc., and is used to input information. The communication unit 25 is, for example, a NIC (Network Interface Card), and transmits and receives information to and from other devices via the Internet 9.

[0033] The storage unit 27 is, for example, an SSD (Solid State Drive), and stores data such as noise data 271, influence coefficient 272, and influence 273 of noise measured by each measuring device 5 for a predetermined period. Note that the influence 273 may be the influence of noise generated by each piece of equipment 6 stored for the predetermined period, and is not limited to this. At this time, the display control unit 29 shown in FIG. 1 causes the client terminal 1 to display the influence for the predetermined period stored in the storage unit 27. Note that the predetermined period is input by the input unit 14 of the client terminal 1, but may also be input by the input unit 24 of the server 2, and is not limited to this.

[0034] FIG. 5 is a sequence diagram of the noise monitoring system. (1) Serial communication system (obtaining stored data from measuring instrument 5 and converting it to a CSV file) The gateway terminal 4 transmits a measurement value transmission request to the measuring instrument 5 every 100 milliseconds (step S11) and receives the analysis result data (measurement data) of the 1 / 3 octave band frequency (step S12). The gateway terminal 4 transmits a measurement value transmission request every 100 milliseconds.

[0035] The gateway terminal 4 averages this measurement data every second (dB average) and generates a file in CSV (Comma Separated Values) format. After acquiring one minute's worth of measurement data, the gateway terminal 4 closes (saves) the CSV file and generates a new CSV file. Once per minute, the gateway terminal 4 transfers all closed CSV files stored in its own storage unit to a predetermined directory on the server 2 by FTP (File Transfer Protocol) (step S13). Thereafter, the client terminal 1 requests the server 2 to display the screen (step S20). The server 2 transmits the screen display data to the client terminal 1 (step S21), and transmits the CSV file to the client terminal 1 (step S22).

[0036] (2) Analog AC signal system (obtaining noise audio data and converting it to Wav → MP3) The gateway terminal 4 samples and acquires the AC-Out (maximum 3Vrms output) of the measuring instrument 5 at 16bit / 48kHz using the A / D converter 52 (step S31). The gateway terminal 4 saves the sampled data as a 10-minute audio file (Wav format: 16bit / 48kHz), and then converts it into a compressed audio source (MP3 format, etc.) and saves it (step S32). The gateway terminal 4 separates the directory where Wav format files are saved from the directory where MP3 format files are saved.

[0037] The gateway terminal 4 receives an instruction to transfer the audio files from the server 2 via HTTP (Hyper-Text Transfer Protocol) (step S33). Then, the gateway terminal 4 transfers all closed files in the directory of recorded data to a predetermined directory on the server 2 via FTP (step S34). Here, the audio files transferred are audio files in Wav and MP3 formats, and are separated from the HTTP command, so that audio files in the desired format can be acquired. Then, if the notification unit 291 of the server 2 determines that the conditions of this audio file match the conditions of noise above a predetermined value (step S35), it instructs the mail server 3 to send a warning email (step S36). This email is sent to the user of the client terminal 1. This makes it possible to quickly notify the user of the warning that the noise has exceeded the predetermined value. This allows the user to quickly realize that they need to take action.

[0038] If the transfer fails in the above sequence, the source device will perform a retry process. The maximum number of retries can be set by the user. The gateway terminal 4 can change the setting for the maximum number of CSV files that can be temporarily stored. The gateway terminal 4 deletes CSV files that exceed the maximum number, starting with the oldest file. This prevents the storage from becoming full. When the power is restored (power is restored) after a power outage, the above will be executed automatically.

[0039] 6 is a model diagram showing a case where measuring instruments 5a to 5d are installed for a plurality of pieces of equipment 6a to 6d. When there is no need to particularly distinguish between the pieces of equipment 6a to 6d, they are simply referred to as equipment 6. Facility 6a is where employees work and is also called building #1, and facility 6b is where other employees work and is also called building #2.

[0040] Equipment 6c indicates equipment that has an emergency generator installed inside it that generates electricity in the event of a power outage or when the normal generator fails, while equipment 6d indicates a building that is equipped with a normal generator that generates electricity during normal times.

[0041] Measuring devices 5e and 5f are installed at the positions of sound receiving points E and F. This makes it possible to measure the noise at the sound receiving points, and by adding a directional parameter, it is also possible to measure the noise level (dB: decibels) of each of the facilities 6a to 6d.

[0042] This measurement data is transmitted to the gateway terminal 4. While Fig. 6 shows one measuring device 5 installed at one sound receiving point, measuring devices 5 can be installed at multiple sound receiving points. In this way, for example, the sound level of noise generated by facility C can be measured in detail using multiple measuring devices 5 installed.

[0043] Fig. 7 is a diagram showing the relationship between each piece of equipment 6a-6d and measuring instruments 5a-5f installed in the vicinity thereof. Fig. 7 is a part of a screen displayed on display unit 16 of client terminal 1. Fig. 7 is a two-dimensional image (plan view) of the three-dimensional image described above, and is an example of a screen displayed on client terminal 1.

[0044] As shown in the figure, the operator (maintenance person) can understand from this image display how the measuring instruments 5a to 5f are arranged relative to the equipment 6a to 6d. In Figure 7, measuring instruments 5a and 5b are installed near equipment 6a and equipment 6b, respectively, and measuring instruments 5c and 5d are installed to the north and south, respectively, near equipment 6c and 6d, which are located to the east.

[0045] Furthermore, a measuring device 5e can be placed at a position (southeast) away from the facilities 6a to 6d, and noise can be detected by the measuring device 5e. As described above, measuring devices 5a to 5d are installed near facilities 6a to 6d, respectively. Measuring devices 5e and 5f measure noise at each sound receiving point.

[0046] In the right diagram, when the noise level measured by the measuring device 5e installed in the southeast exceeds a predetermined predetermined noise level, the display unit 16 of the client terminal 1 flashes or lights up. The operator can tell that the noise level at this point is high by the flashing or lit display of the measuring device 5e. In this way, it is possible to determine whether the noise levels of the measuring devices 5e and 5f installed at the sound receiving points are high or low. The noise state of each piece of equipment 6 will be described below.

[0047] 8 is a graph 71 showing an influence analysis of the sound receiving point. The graph 71 is displayed on the display unit 16 of the client terminal 1. The left axis of graph 71 shows the numerical values ​​of the bar graphs that show the noise level by facility in decibels. These numerical values ​​are defined as the impact level by facility. The first bar graph from the left shows the noise level due to the impact of facility 6c, indicated as "Facility C." The second bar graph from the left shows the noise level due to the impact of facility 6d, indicated as "Facility D." The second bar graph from the left shows the noise level due to the impact of facility 6b, indicated as "Facility B."

[0048] The right axis of graph 71 shows the numerical value obtained by adding up the influence of a certain piece of equipment 6 and the influence of other pieces of equipment 6 that have a higher influence than that piece of equipment 6. This numerical value is defined as the cumulative influence. In this graph 71, the cumulative influence [dB] is the value obtained by adding up the influence [dB] of a certain piece of equipment 6 and the influence [dB] of other pieces of equipment 6 that have a higher influence than that piece of equipment 6, in decibels. In other words, the cumulative influence of equipment 6b is the value obtained by adding up the influences of equipment 6b and equipment 6c and 6d in decibels.

[0049] Simple addition of decibel values ​​is not possible; addition and subtraction of power values ​​is required. In other words, the decibel values ​​are converted back to antilogarithmic numbers, addition is performed using antilogarithmic numbers, and then converted back to decibel values. This type of addition is called decibel addition. For example, L [dB], the decibel sum of L1 [dB] and L2 [dB], is calculated using the following formula (1).

number

[0050] By having the display control unit 29 display the impact and cumulative impact for each piece of equipment 6 in this way, the user can easily take measures against noise. For example, in the case of graph 71, the cumulative impact for pieces of equipment 6c, 6d, and 6b is approximately 61 [dB]. In this case, it can be seen that even if the user takes noise countermeasures for pieces of equipment 6 other than pieces of equipment 6c, 6d, and 6b, the noise level at the sound receiving point cannot be reduced below 61 [dB]. In other words, if there is a target value for reducing the noise level at the sound receiving point, the user can determine which pieces of equipment 6 need to have noise countermeasures taken for by understanding the cumulative impact. Furthermore, by displaying the facilities 6 in descending order of cumulative impact as in graph 71, it is possible to understand which facilities 6 are causing the noise level to saturate.

[0051] 9 is a table 72 that ranks the detailed names (main sound sources) of each piece of equipment 6 and the degree of influence [dB] of each piece of equipment 6. This table 72 is displayed on the display unit 16 of the client terminal 1.

[0052] The equipment with the highest impact is equipment 6c, designated "equipment C," which is the equipment 6c that contains the emergency generator, with an impact level of 57.5 dB. The impact level for equipment 6c is the noise level measured by measuring device 5c minus the amount of attenuation.

[0053] The second most influential factor is facility 6d, designated "Facility D," with an impact factor of 55.9 dB. The facility impact factor for facility 6d is the noise level measured by measuring device 5d minus the amount of attenuation.

[0054] The third place in impact level is equipment 6b, designated "equipment B," with an impact level of 55.0 dB. The impact level of equipment 6d is the noise level measured by measuring instrument 5b minus the amount of attenuation.

[0055] 8 and 9 on the client terminal 1, it is possible to grasp which facilities 6 are most affected by noise. Furthermore, rather than taking noise countermeasures for all of the facilities 6c, 6d, and 6b, noise countermeasures, such as installing soundproof walls, are taken only for the facilities 6 with noise levels above a certain specified value, for example, 57 dB or above.

[0056] In the example shown in Figure 8, the equipment impact level of equipment 6c shown as "equipment C" is 57.5 [dB], and soundproof walls or the like will be installed only around this equipment 6c. By subtracting the amount of attenuation by equipment from the noise level measured by measuring device 5c near equipment 6c, it is possible to calculate the impact of equipment 6 on the overall noise at the sound receiving point.

[0057] The attenuation for each facility is calculated in advance based on, for example, ISO 9613-2. The attenuation for each facility is calculated based on the distance from each facility 6 to the sound receiving point, the area of ​​the collapsed surface, the condition of the ground surface, temperature and humidity, atmospheric pressure, and the positional relationship with respect to obstructions. In this embodiment, temperature, humidity, and atmospheric pressure are not measured, but a temperature and humidity sensor or atmospheric pressure sensor may be added and the attenuation for each facility may be calculated taking into account information from these sensors. When doing the same thing in a simulation, fixed values ​​are input.

[0058] As shown in Fig. 1, the client terminal 1 is connected to the server 2 via HTTPS via the Internet 9. The client terminal 1 displays data stored in the server 2, and the contents operated and input from the client terminal 1 are reflected in the storage unit of the server 2 and displayed.

[0059] The client terminal 1 displays the plan view of Fig. 7 in the measuring device status display pane, and displays the measuring devices 5 that are at or above a predetermined noise level by lighting up or blinking. This allows the staff member to grasp the sound receiving points where the noise level is above the predetermined noise level.

[0060] 8 in the impact display pane and displays the impact of each piece of equipment 6 measured by the measuring instrument 5, the staff can identify the equipment 6 that has an impact on the surrounding area among the noise generated by the equipment 6, and can take measures such as installing soundproof walls, etc. The above settings will be explained using table 74 in FIG.

[0061] FIG. 10 is a diagram showing a table 74 included in the display screen of the client terminal 1. As shown in FIG. Table 74 registers the measurable equipment 6a, 6b, 6c, and 6d in units of each measuring instrument 5a, 5b, 5c, and 5d. The data registered in table 74 is the same as the data stored in server 2, and is displayed on client terminal 1. This table 74 is displayed in the impact setting display pane. The noise level is measured in decibels, and stores the noise level measured by measuring instrument 5 and the noise level of equipment 6 that can be measured by measuring instrument 5.

[0062] The staff member sets the impact coefficients X1, X2, X3, and X4 for each piece of equipment 6 in advance. For example, if equipment 6c is located near a residential area outside the factory, the noise from this equipment 6c will have a high impact on the residential area, so the impact coefficient will be set to a high value. In this way, the impact of noise can be reflected according to the situation of each piece of equipment 6. The server 2 also calculates the impacts Y1, Y2, Y3, and Y4 for each piece of equipment 6 based on the noise level of the equipment 6 and the impact coefficients X1, X2, X3, and X4. The server 2 stores this calculated data and displays, for example, graph 71 in FIG. 8 in the impact display area described above.

[0063] (1) The influence coefficients X1, X2, X3, and X4 represent the amount of attenuation in noise calculations. Since the influence coefficients X1, X2, X3, and X4 are parameters determined by the relative positions of the sound source and the receiving point, and the relationship with any obstructions between them, by subtracting the influence coefficient (amount of attenuation) from the acoustic power of equipment 6, the noise level (influence) that the equipment itself has on the receiving point can be calculated.

[0064] (2) Before conducting continuous noise monitoring as described in (1) above, the staff will measure the noise levels of the factory and equipment in advance when the equipment is operating and when it is not operating, and will conduct an analysis based on this noise data to prepare for calculating the impact coefficient.

[0065] (3) The influence coefficient in (2) above is used and applied to this system, which constantly monitors noise, to display the influence.

[0066] The data on noise levels and impacts of the measuring instruments 5 and the equipment 6 are received in real time from the measuring instruments 5 by the server 2, stored in a table 74, and displayed on the client terminal 1.

[0067] In the present invention, a fixed period is also set as a unit for each piece of equipment 6a, 6b, and 6c. Based on this setting, the server 2 calculates the cumulative noise level and impact of each piece of equipment 6 for the specified period, reflects this in the table 74, and displays it as a graph in the cumulative impact display area.

[0068] A certain threshold is set for the impact level, and if there is equipment 6 whose impact level exceeds that threshold, measures such as installing soundproof walls around the equipment 6 and soundproofing the building are taken. Here, the period for each facility 6 will be described. When specifying a period for a facility 6a, 6b, or 6c using the client terminal 1, it is desirable to set the period during which the facility 6 is in operation. For example, when calculating the noise level for facility 6a for one month or the impact obtained from the noise level, the accumulated calculated data may be low and within a certain specified value. However, even if the calculated data is above the specified value during business days for facility 6a or when the motors, generators, etc. provided in facility 6a are operating, measures such as the installation of soundproof walls may be necessary. Therefore, the period is specified according to the status of each facility 6. Here, the status of facility 6 refers to whether it is a business day, whether the normal generator is operating, whether the emergency generator is operating, etc.

[0069] Furthermore, when focusing on equipment 6a, its noise level can be measured not only by measuring device 5a but also by measuring devices 5b, 5c, and 5d, and therefore the influence can also be calculated. Therefore, the influence of equipment 6a is calculated by referring to the noise levels measured not only by nearby measuring device 5a but also by the other measuring devices 5b to 5d. In addition to the cumulative noise level and impact level, an average value obtained by dividing the level by the number of days or hours of the period may also be used.

[0070] FIG. 11 is a diagram showing a display screen 73 of the impact when countermeasures are taken for facility 6. The display screen 73 in FIG. 11 is displayed on the client terminal 1. It shows the remeasured impact when predetermined countermeasures are taken for the impacts of "Facilities C, D, B" described in FIG. 7. The countermeasure proposal text box 731 is a field where the user inputs a countermeasure proposal. The reduction amount text box 732 is a field where the user inputs the reduction amount.

[0071] By installing a soundproof wall on facility 6c, labeled "Facility C," the impact level after the measures is 42.5 [dB], a reduction of -15 [dB]. Furthermore, the impact level of facility 6c, labeled "Facility D," is 40.9 [dB] due to the installation of a soundproof wall. For the building of facility 6b, labeled "Facility B," the impact level is 45.0 [dB] due to the strengthening of the building. The impact level of the noise level after the measures measured by measuring device 5e is calculated by adding the volume obtained by inverse logarithmic transformation of these impact levels after the measures, and then logarithmically converting it to a decibel value. By taking such measures, the noise level at measuring device 5e can be reduced to 54.6 [dB].

[0072] FIG. 12 is a flowchart of the noise monitoring server-side program 274. First, the CPU 21 receives an input of an influence coefficient for calculating the influence from the client terminal 1 (step S40). Then, the CPU 21 stores the noise data measured by each measuring device 5 in the storage unit 27 (step S41). The calculation unit 28 calculates the degree of influence of each piece of equipment 6 from the noise data measured by each measuring instrument 5 (step S42). Then, the display control unit 29 causes the client terminal 1 to display the degree of influence of each piece of equipment 6 on the noise data for each piece of equipment 6 (step S43), and the processing in FIG. 12 ends.

[0073] The configuration and effects of the present invention will be described below.

[0074] [1] a plurality of measuring devices (5) for measuring noise from a plurality of pieces of equipment (6); a gateway terminal (4) that transmits noise data measured by the measuring device (5); a calculation unit (28) that calculates the influence of each piece of equipment (6) based on the influence coefficient; a memory unit (27) that stores noise data measured by each of the measuring devices (5) and stores the influence degree calculated by the calculation unit (28); a display control unit (29) that displays, on a display unit (16), the degree of influence of each piece of equipment (6) on the noise data calculated based on the noise data measured by the measuring instrument (5); an input unit (14) for inputting an influence coefficient for calculating the influence; A noise monitoring system comprising:

[0075] This allows maintenance personnel operating client terminals to not only see the current noise situation, but also identify the facility that is the source of the noise and analyze the noise situation.

[0076] [2] The display control unit (29) displays the influence degrees for each piece of equipment (6) in descending order. 2. The noise monitoring system according to claim 1.

[0077] This allows the user to easily identify the equipment (6) that is highly affected and take soundproofing measures for this equipment (6).

[0078] [3] The calculation unit (28) calculates a cumulative influence degree for each piece of equipment (6) by summing the influence degree of the equipment (6) and the influence degrees of equipment having a higher influence degree than the equipment (6), The display control unit (29) displays the impact degree and the cumulative impact degree for each piece of equipment (6). 3. The noise monitoring system according to claim 2.

[0079] This allows the user to easily identify the equipment (6) that is highly affected and take soundproofing measures for this equipment (6).

[0080] [4] The input unit (14) inputs the influence coefficient of the noise measured by each of the measuring instruments (5), The calculation unit (28) calculates the influence of each noise measured by the measuring instrument (5) based on the influence coefficient of the noise measured by each measuring instrument (5) and the level of the noise measured by the measuring instrument (5). 2. The noise monitoring system according to claim 1.

[0081] This makes it possible to easily calculate the influence of noise based on the noise level measured by the measuring instrument (5) installed near the equipment (6) and its influence coefficient.

[0082] [5] The input unit (14) inputs an influence coefficient of noise generated from each of the facilities (6), the calculation unit (28) calculates the influence of the noise generated from each of the facilities (6) based on the influence coefficient of the noise generated from each of the facilities (6) and the noise level of each of the facilities (6) stored in the storage unit (27). 2. The noise monitoring system according to claim 1.

[0083] This makes it possible to easily calculate the influence of noise based on the noise level emitted by the equipment (6) itself and its influence coefficient.

[0084] [6] The storage unit (27) stores the influence degree of the noise measured by each of the measuring instruments (5) or the influence degree of the noise generated by each of the facilities (6) for a predetermined period of time, The display control unit (29) displays the degree of influence for the predetermined period stored in the storage unit (27). 6. The noise monitoring system according to claim 1, wherein the noise monitoring system comprises: a noise monitoring unit;

[0085] This makes it possible to show which noise has the greatest influence over a given period of time.

[0086] [7] The predetermined period is input using the input unit (14). 6. The noise monitoring system according to claim 5.

[0087] This allows the user to indicate which noise has the greatest impact in a desired period of time.

[0088] [8] a notification unit (291) that issues a warning when the noise received from the gateway terminal (4) satisfies a predetermined condition; 2. The noise monitoring system of claim 1, further comprising:

[0089] This allows the noise monitoring system to quickly issue a warning indicating that the noise has exceeded a predetermined value, allowing the user to quickly realize that measures are necessary.

[0090] [9] a plurality of measuring devices (5) for measuring noise from a plurality of pieces of equipment (6); a gateway terminal (4) that transmits noise data measured by the measuring device (5); a calculation unit (28) that calculates the influence of each piece of equipment (6) based on the influence coefficient, and calculates a cumulative influence for each piece of equipment (6) by adding up the influence of the equipment (6) and the influence of equipment (6) having a higher influence than the equipment (6); a display control unit (29) that displays, on a display unit for each piece of equipment (6), the cumulative impact of each piece of equipment (6) calculated based on the noise data measured by the measuring instrument (5); an input unit (14) for inputting an influence coefficient for calculating the influence; A noise monitoring system comprising:

[0091] This allows maintenance personnel operating client terminals to not only see the current noise situation, but also identify the facility that is the source of the noise and analyze the noise situation.

[0092]

[10] a plurality of measuring devices (5) for measuring noise from a plurality of pieces of equipment (6); A noise monitoring method executed by a noise monitoring system including a gateway terminal (4) that transmits noise data measured by the measuring device (5), an input unit (14) inputting an influence coefficient for calculating the influence; a calculation unit (28) calculating an influence degree of each of the facilities (6) based on the influence degree coefficient; a step of storing noise data measured by each of the measuring devices (5) and storing the influence degree calculated by the calculation unit (28); a step in which a display control unit (29) displays, for each piece of equipment (6), the degree of influence of each piece of equipment (6) on the noise data calculated based on the noise data measured by the measuring instrument (5); A noise monitoring method comprising:

[0093] This allows maintenance personnel operating client terminals to not only see the current noise situation, but also identify the facility that is the source of the noise and analyze the noise situation.

[0094]

[11] On the computer, a step of inputting an impact coefficient for calculating the impact; a procedure for storing noise data measured by each measuring device (5); a step of calculating the influence of each of the pieces of equipment (6) from noise data of each of the pieces of equipment (6) measured by each of the measuring instruments (5) based on the influence coefficient and storing the calculated influence in a storage unit (27); a step of displaying, for each piece of equipment (6), the degree of influence of each piece of equipment (6) on the noise data calculated based on the noise data measured by the measuring instrument (5); Noise monitoring program to carry out.

[0095] This allows maintenance personnel operating client terminals to not only see the current noise situation, but also identify the facility that is the source of the noise and analyze the noise situation.

[0096] (Variation) The present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and are not necessarily limited to those including all of the described configurations. It is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is also possible to add, delete, or replace part of the configuration of each embodiment with other configurations.

[0097] The above-described configurations, functions, processing units, processing means, etc. may be realized in part or in whole by hardware such as an integrated circuit. The above-described configurations, functions, etc. may be realized by software by a processor interpreting and executing a program that realizes each function. Information such as the programs, tables, and files that realize each function can be stored in a storage device such as a memory, a hard disk, or an SSD (Solid State Drive), or on a storage medium such as a flash memory card or a DVD (Digital Versatile Disk).

[0098] In each embodiment, the control lines and information lines shown are those that are considered necessary for the explanation, and not all control lines and information lines in the product are necessarily shown. In reality, it can be considered that almost all components are interconnected. As modified examples of the present invention, for example, the following (a) to (c) are available.

[0099] (a) The calculation unit is not limited to being embodied by the server 2. The client terminal 1 may directly calculate the influence. (b) The display control unit is not limited to being embodied by the server 2. The client terminal 1 may cause the display unit to display, for each piece of equipment 6, the degree of influence of each piece of equipment 6 on the noise data calculated based on the noise data measured by the measuring instrument 5. (c) The storage unit 17 of the client terminal 1 may store the noise data measured by each measuring device 5 and the degree of influence calculated by the calculation unit. [Explanation of symbols]

[0100] 1. Client terminal 11 CPU 12 ROM 13 RAM 14 Input section 15 Communications Department 16 Display 17 Memory section 171 Noise Monitoring Application Program 2 Server 21 CPU 22 ROM 23 RAM 24 Input section 25 Communications Department 27 Memory section 28 Calculation Unit 29 Display control unit 291 Information Department 271 Noise Data 272 Impact Factor 273 Impact 274 Noise Monitoring Server-Side Program (Noise Monitoring Program) 3. Mail Server 4, 4a to 4f Gateway terminal 5,5a~5f Measuring device 51 Mike 52 A / D converter 6,6a~6d Equipment 9. Internet

Claims

1. a plurality of measuring devices for measuring noise from a plurality of pieces of equipment, a gateway terminal for transmitting the noise data measured by the measuring device; a calculation unit that calculates the influence of each piece of equipment based on the influence coefficient; a storage unit that stores noise data measured by each of the measuring devices and stores the influence degree calculated by the calculation unit; a display control unit that causes a display unit to display, for each piece of equipment, the degree of influence of each piece of equipment on the noise data calculated based on the noise data measured by the measuring instrument; and an input unit for inputting an influence coefficient for calculating the influence; A noise monitoring system comprising:

2. The display control unit displays the impact levels for each piece of equipment in descending order.

2. The noise monitoring system according to claim 1.

3. the calculation unit calculates a cumulative impact for each piece of equipment by summing the impact of the piece of equipment and the impact of equipment having an impact higher than that of the piece of equipment; the display control unit displays the impact degree and the cumulative impact degree for each piece of equipment.

3. The noise monitoring system according to claim 2.

4. The input unit inputs the influence coefficient of the noise measured by each of the measuring devices, the calculation unit calculates the influence of each of the noises measured by the measuring instruments based on the influence coefficient of the noise measured by each of the measuring instruments and the level of the noise measured by each of the measuring instruments.

2. The noise monitoring system according to claim 1.

5. The input unit inputs an impact coefficient of noise generated from each of the facilities, the calculation unit calculates the influence of the noise generated from each of the facilities based on the influence coefficient of the noise generated from each of the facilities and the noise level of each of the facilities stored in the storage unit.

2. The noise monitoring system according to claim 1.

6. the storage unit stores the influence degree of noise measured by each of the measuring devices or the influence degree of noise generated by each of the facilities for a predetermined period of time; the display control unit displays the degree of influence for the predetermined period stored in the storage unit; 6. A noise monitoring system according to claim 1, wherein the noise monitoring system comprises: a noise monitoring unit;

7. The predetermined period is input by the input unit.

7. The noise monitoring system according to claim 6.

8. a notification unit that issues a warning when the noise received from the gateway terminal satisfies a predetermined condition; 2. The noise monitoring system of claim 1, further comprising:

9. a plurality of measuring devices for measuring noise from a plurality of pieces of equipment, a gateway terminal for transmitting the noise data measured by the measuring device; a calculation unit that calculates the influence of each piece of equipment based on the influence coefficient, and calculates a cumulative influence for each piece of equipment by summing the influence of the equipment and the influence of equipment having a higher influence than the equipment; a display control unit that causes a display unit to display, for each piece of equipment, the cumulative impact degree of each piece of equipment calculated based on the noise data measured by the measuring instrument; and an input unit for inputting an influence coefficient for calculating the influence; A noise monitoring system comprising:

10. a plurality of measuring devices for measuring noise from a plurality of pieces of equipment, A noise monitoring method executed by a noise monitoring system including a gateway terminal that transmits noise data measured by the measuring device, an input unit inputting an influence coefficient for calculating an influence; a calculation unit calculating an influence degree of each piece of equipment based on the influence degree coefficient; a step of storing noise data measured by each of the measuring devices and storing the influence degree calculated by the calculation unit; a step in which a display control unit displays, for each piece of equipment, the degree of influence of each piece of equipment on the noise data calculated based on the noise data measured by the measuring instrument; A noise monitoring method comprising:

11. On the computer, a step of inputting an impact coefficient for calculating the impact; Procedures for storing noise data measured by each measuring device; a step of calculating the influence of each piece of equipment from noise data of each piece of equipment measured by each of the measuring devices based on the influence coefficient and storing the calculated influence in a storage unit; a step of displaying, for each piece of equipment, the degree of influence of each piece of equipment on the noise data calculated based on the noise data measured by the measuring instrument; Noise monitoring program to carry out.

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