KR20020005803A - Method for implementing internet based noise measurement and noise environment database system - Google Patents

Abstract

PURPOSE: A method for implementing Internet based noise measurement and constructing a noise environment database system are provided to supply a technique for measuring a noise rate by a micro phone and a PC by supplying a technique for measuring a noise of an external environment of user using the PC, a general mike, and a program on the Internet. CONSTITUTION: User information as geographic information and an external environment by connecting a user to the corresponding web site is inputted, and user system environment information of hardware information as a kind of a sound card and a microphone is inputted. A noise rate measuring program based on the Internet is downloaded through the Internet in a server computer and a noise measured using a micro phone being connected to a user computer is received as an analogue voltage signal, and a digital signal of a measured noise being transmitted from the sound card is read(3). A measured noise value is corrected for correcting a distortion of a noise by the micro phone and the sound card being connected to the user computer(4). A necessary noise rate is calculated using the digital value received from the sound card(5). The user computer displays a noise rate of an external environment of the user(6) and transmits the noise rate to a noise measuring and a noise environment database of the server computer through an Internet line(7). The noise rate is classified in accordance with information inputted by the user(8) and the classified noise rate is stored in the database(9).

Description

Method for implementing internet based noise measurement and noise environment database system

The present invention relates to an Internet-based noise measurement and noise environment database system. In particular, by using a microphone mounted on a personal computer, the noise level and noise characteristics of the surroundings are grasped to provide an appropriate noise prevention measure for a user environment. At the same time, the present invention relates to a method of constructing an internet-based noise measurement and noise environment database system to collect data on indoor noise and build a database to prepare standards and measures for noise.

In general, the conventional noise measurement used a method of measuring through a microphone fixed to a certain height using a tripod. However, in the method of fixing the microphone for noise measurement by a tripod, it is difficult to fix the microphone at a desired point because the installation position of the tripod is limited.

Therefore, it is difficult to accurately measure and analyze the noise measurement because the noise point is limited to a specific position and thus it is difficult to measure the noise of the granular measurement point of the indoor noise.

Referring to the domestic well-known patent `` Noise Level Measurement Device '' (Publication No. 10-1998-045881), the noise level measurement device equipped with a distance detection sensor automatically detects the distance when the noise measurement distance is set from the noise source. The exact noise level could be measured.

However, many existing noise measuring devices have been proposed, but a system that prepares scientific standards and countermeasures against noise based on internet-based noise measurement data has not been proposed yet. There is an uncomfortable problem.

The present invention has been proposed to solve the above problems of the prior art, and an object of the present invention is to provide a technique for measuring the noise of the user's own environment using a PC, a general microphone, and a program on the Internet. Provides technology to calculate noise level by microphone and PC so that accurate noise level can be predicted by using the microphone used in the system, and various noise-related regulations and other important data when necessary It provides an internet based noise measurement and noise environment database system construction method.

1 is a block diagram of the Internet-based noise measurement and noise environment database system according to the present invention.

2 is a schematic diagram of an internet noise measurement and environmental system viewed from a user's perspective.

3A is a schematic diagram of an internet noise measurement and environmental system centered on a server;

Figure 3b is a schematic diagram of the Internet noise measurement and environmental system according to the flow of information.

4 is a block diagram showing a process for correcting distortion of measured noise by a microphone and a sound card;

5 is a flowchart of a noise level measurement program in Java applet code for a user to download.

6 is a flowchart of a server-side user access program.

7 is a flowchart of a database data transfer program according to a user's request.

Explanation of symbols on the main parts of the drawings

1: web browser 2: noise level measurement program

3: web server 4: noise environment and noise level processing program

5: database data transmission program

6: database linkage program

7: Noise Measurement and Noise Environment Database

In order to achieve the above object, the present invention provides a web browser (1), noise level measurement program (2), web server (3), noise environment and noise level processing program (4), database data transmission program (5), database interlocking program (6) and a system equipped with a noise measurement and noise environment database (7): input user information such as geographic information by accessing the user's website and surrounding environment (with or without construction site), and Inputting user system environment information such as hardware information such as type and microphone; The Internet-based noise level measurement program (2) is downloaded from the server computer through the Internet, and the measured noise is inputted as an analog voltage signal using a microphone connected to the user's computer, and the digital signal of the measured noise sent by the sound card is read. Entering step ③; (4) correcting noise measurement values to correct distortion of noise by a microphone and a sound card connected to a user computer; Calculating a required noise level using the digital value input from the sound card (⑤); Displaying the noise level of the surrounding environment in the user computer (⑥) and transmitting the noise level to the noise measurement and noise environment database 7 of the server computer via the Internet line (⑦); And (8) classifying the noise levels according to the user input information (⑧) and storing the classified noise levels in a database (⑨). .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a Internet-based noise measurement and noise environment database system according to the present invention is a web browser (1), noise level measurement program (2), web server (3), noise environment and noise level processing program (4), database data transmission Program 5, database interlocking program 6, and noise measurement and noise environment database 7;

Briefly explaining the function of the Internet noise measurement and noise environment system, the microphone installed in the general personal computer is used to determine the noise level of the surrounding environment and, if possible, the characteristics of the noise to prevent the noise suitable for the situation. At the same time, it builds a database that collects data on indoor noise by receiving the user's location and environment. The database construction data can be used as valuable data in establishing standards for noise and establishing countermeasures against noise that can be a problem in society.

2 is a schematic view of the user and service provider (server operator) of the Internet noise measurement and environmental system viewed from the user's perspective.

The following describes the Internet noise measurement and noise environment system based on the user's usage method. The user enters the user's information such as the current geographic location, the surrounding environment (whether or not the construction site) and the hardware information (sound card type, microphone, etc.) being used. The noise level measurement program 2 is downloaded and executed to calibrate the program according to the user environment to calculate the noise level according to the user's personal PC. The noise is measured using the microphone of the user's PC and the ambient sound pressure is converted into a voltage value to enter the sound card. The noise level measurement program 2 is connected to a sound card and transmits the measured noise information to the noise measurement and noise environment database 7 of the server computer. Alternatively, the noise level is calculated directly from the user's PC without transmitting the measured data, and only the calculated value is transmitted to the noise measurement and noise environment database 7 of the server computer.

It tells the user how loud the noise level is on the user's web page and lets them know what that value means. The user reads the comments based on his noise level and takes the appropriate action. The noise level measurement program 2 stores the user's environment, the decibel (dB) value, and the characteristics of the noise in the noise measurement and noise environment database 7 of the server (⑧).

3A is a schematic diagram of an internet noise measurement and environmental system centered on a server, and FIG. 3B is a schematic diagram of an internet noise measurement and environmental system according to information flow.

The microphone converts the noise (sound pressure) measured in the surroundings into an analog voltage signal and transmits it to the sound card (①).

The sound card converts the analog voltage signal of the noise input from the microphone into a digital signal and adjusts the magnitude of the voltage and the conversion ratio between the digital value (②).

The Internet-based noise level measurement program 2 receives the digital signal of the measured noise transmitted from the server computer through the Internet and executed on the user's computer and sent by the sound card (③).

Since the digital value indicated for the sound pressure of the same measured noise may be different because the performance of the PC sound card or microphone of the user is different, correct the noise measurement value (④).

As shown in FIG. 4, the sound pressure P value, which is the reference for the noise level, is changed to C1 * C2 * P while passing through the microphone and the sound card, so that the C1 * C2 value becomes 1 through correction to obtain a proper noise level. To do this, adjust the gain of the sound card, C1.

In the case of a sound card used by a user, since the type of the product used is finite and the specificity of the product is constant, the product can be tested in advance to find out its characteristics. However, in the case of the microphone, since the deviation is severe, it is necessary to find a gain value that can correct the characteristics of the microphone by using a constant noise source that knows the P value.

For example, a cell phone can be calibrated using a cell phone that is already popular and whose noise characteristics are consistent within a product. In other words, by using a microphone of a regular standard that knows its characteristics, it measures the noise characteristics (sounds when you press the keypad) of each product of the mobile phone under a certain situation, so that the user can hear the noise in the above situation By measuring and adjusting the gain value to have the same value as in the above situation, it is possible to correct the distortion of the noise caused by the microphone and the sound card.

Calculate the required noise level using the digital value input from the sound card (⑤). Noise level is a unit of measurement of noise. Noise level is an objective unit of sound evaluation, Sound Pressure Level (SPL, dB) (see Equation 1), and A-weighting Sound Pressure Level (dBA), which is a subjective unit of noise evaluation Considering that the degree of feeling is different, we use weighting unit for each frequency to evaluate the noise). In addition, there are several noise evaluation units such as Loudness, Loudness Level, Effective Perceived Noise Level (EPNL), Equivalent Continuous Perceived Noise Level (ECPNL), Weighted ECPNL (WECPNL), and so on.

(However, Prms: root mean square of sound pressure (Pa),

Pref: reference sound pressure or the smallest sound a human can hear (typically 2 × 10 ^-5 Pa) (Reference Sound Pressure or threshold of hearing)

Display the noise level of the user's surroundings (⑥) and transmit the noise level to the server computer through the Internet line (⑦). The noise level is classified according to the information input by the user (⑧) and the classified noise level is stored in the database (⑨).

5 is a flowchart of a Java applet coded noise level measurement program for a user to download.

Download and execute the noise level measurement program 2 of Java Applet to the user's computer (step S1) and input user information such as geographic information and the surrounding environment (with or without construction site) (step S2) Input user system environment information such as sound card type, microphone, etc. (step S3) and correct the noise level error for the user system such as noise level error correction by the microphone (step S4) to measure the noise level (step S4). S5) Input user system environment information (step S6).

6 is a flowchart of a server side user access program.

Waiting for the user connection (step S7) and checking the connection (step S8), when the user is connected, the noise level measurement program 2 in Java Applet code is transmitted to the user system (step S9) and the program is executed. (Step S10) receives user environment information and noise level from the noise level measurement program 2 downloaded by the user (step S11), and transmits the appropriate information and instructions according to the noise level from the server to the user (step S12). Ambient environment information and noise level data are sent to the noise measurement and noise environment database 7 (step S13).

7 is a flowchart of a database data transfer program according to a user's request. Waiting for the user connection (step S15) and checking the user information request (step S16), if requested, accesses the noise measurement and noise environment database 7 (step S17) to obtain the required noise level information (step S18). In the web browser (1) to switch to the appropriate form (step S19) is transmitted to the user via the web server 3 (step S20). The user can check the necessary noise and environmental information through the web browser (1).

Therefore, it is possible to establish a noise environment system at low cost, collect indoor noise data measured by microphone from the Internet-based noise measurement and noise environment database system, and analyze standardized noise standards for various regulations, laws and complaints. You can arrange.

As described above, by constructing the Internet-based noise measurement and noise environment database system according to the present invention, a large amount of indoor noise data can be collected using only server construction and program development costs, and by using the measured noise data. Standardized noise standards for regulations, laws and complaints can be prepared.

In addition, the data obtained using the Internet-based noise measurement and noise environment database system can be analyzed to classify the area into several classes according to the noise level, and more accurate microphones are installed in areas with high noise levels. The PC system can be installed in the desired area, and the PC can be connected to the network to establish an easy noise environment monitoring system at a low cost, and provide the public with an easy access to the noise, At the same time, it has the effect of attracting attention and protecting people living in severe noise pollution environments before they can permanently damage their hearing.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

Claims (2)

Web browser (1), noise level measurement program (2), web server (3), noise environment and noise level processing program (4), database data transmission program (5), database linkage program (6) and noise measurement and noise environment database In the system with (7): Inputting user information such as geographic information by accessing a corresponding website of the user, surrounding environment (whether or not a construction site), and inputting user system environment information such as hardware information such as sound card type and microphone; The Internet-based noise level measurement program (2) is downloaded from the server computer through the Internet, and the measured noise is inputted as an analog voltage signal using a microphone connected to the user's computer, and the digital signal of the measured noise sent by the sound card is read. Entering step ③; (4) correcting noise measurement values to correct distortion of noise by a microphone and a sound card connected to a user computer; Calculating a required noise level using the digital value input from the sound card (⑤); Displaying the noise level of the surrounding environment in the user computer (⑥) and transmitting the noise level to the noise measurement and noise environment database 7 of the server computer via the Internet line (⑦); And Internet based noise measurement and noise environment database system comprising the step of (9) classifying the noise level according to the user input information (⑧) and storing the classified noise level in the database (⑨). The method of claim 1, A function of inputting the user information and user system environment information into a computer, The Internet-based noise level measurement program (2) is downloaded from the server computer through the Internet, and the measured noise is inputted as an analog voltage signal using a microphone connected to the user's computer, and the digital signal of the measured noise sent by the sound card is read. Lifting function, Correcting the noise measurement value; A function of calculating the noise level, and The user can display the noise level of the surrounding environment from the computer, transmit the noise level to the server computer through the Internet line, and classify the noise level according to the information input by the user and measure the noise level and store it in the noise environment database. A computer-readable recording medium that contains a program for making a program.