baber/WOPTO huggingface dataset:
Patent KR-20000053744-A (KR)
Inventor: LEE JAE CHEON
IPC: G06F13/00
Filed: 2000-03-22
Abstract: PURPOSE: A device for converting a computer network having a security function, is provided to operate divided internal and external networks with one computer, by installing hard disk drivers(HDDs) for internal and external networks and operating the internal/external HDDs in the internal/external networks respectively. CONSTITUTION: A device for converting a computer network having a security function, is connected to a main board of a computer, selects and operates hard disks installed by being divided into internal/external networks by recognizing selection of a switch device. The device comprises a network converting device(120), a signal processing device(130) and a hard disk switching device(140). The network converting device(120) converts internal/external communication networks. The signal processing device(130) is gate-combined to process an operation of the switch device and an instruction from the main board. And the hard disk switching device(140) operates relay to operate the hard disks by being switched according to an operation of the signal processing device.
Patent KR-20010097819-A (KR)
Inventor: LEE JUN HUI
IPC: G06F17/00
Filed: 2000-04-26
Abstract: 본 발명은 월드와이드웹(www)상에서 사용자가 엠피쓰리 파일을 합법적으로 다운로드 받을 수 있는 방법에 관한 것으로,  엠피쓰리 파일을 다운로드 받는 사용자가 운영자 웹사이트에서 제공하는 광고를 보도록 유도하고 그 광고 수입으로 엠피쓰리 파일 저작권자에게 저작권료를 지급할 수 있는 방법에 관한 것이다. 본 발명은 사용자가 엠피쓰리 음악 파일을 다운로드받고자 운영자의 웹사이트에 접속하는 단계, 사용자가 다운로드받고자 하는 음악 파일을 검색하고 음악 파일을 선택하여 다운로드를 실행하는 단계, 엠피쓰리 음악 파일 다운로드용 애플리케이션이 나타나고 다운로드가 진행되는 단계,  애플리케이션의 다운로드가 진행되는 동안 광고가 구현되는 단계, 광고 구현의 실적이 운영자 웹서버에 기록되는 단계, 기록된 실적에 비례하여 운영자에게 광고비가 지급되고 그 광고 수입 중 저작권과 관련된 권리에 대한 대가를 저작권자 또는 그 대리인에게 지급하는 단계를 포함한다.
Patent KR-20010103897-A (KR)
Inventor: MUN NAM SU
Filed: 2000-05-10
Abstract: 본 발명은 통신 장비 보드에 사용되는 하드웨어 소자의 상태를 감시하는 장치에 있어서, 상기 하드웨어 소자와 CPU사이에 장애 감시 회로를 구비하여 하드웨어 소자의 감시를 소프트웨어로 처리하지 않고, 하드웨어로 처리하여 저 성능의 CPU를 사용할 수 있도록 함은 물론 신뢰성을 향상시킬 수 있도록 한 통신 장비 보드용 하드웨어의 장애 감시 장치 및 방법에 관한 것이다. 
     본 발명은 하드웨어 소자(10)와 CPU(20)사이에 별도로 장애 감시부(30)를 더 접속하여 구성되는 것으로, 이러한 장애 감시부(30)가, 하드웨어 소자(10)로 어드레스를 보내며 제어신호를 주고받는 소자 인터페이스부(31), 소자 인터페이스부(31)로 레치 제어신호를 보내는 제어부(32), 상기 제어부(32)로부터 버퍼 제어신호를 입력받는 제1,제2버퍼(33)(34), 제어부(32)로 CPU제어신호를 보내며 CPU로 인터럽트 신호를 보내는 CPU인터페이스부(35), 제어부(32)의 감시 제어신호에 따라  상기 CPU인터페이스부(35)로 검출신호를 보내는 상태 감시 및 누적부, 상기 상태 감시 및 누적부(36)와 접속된 n개의 상태 레지스터(36), 상태 감시 및 누적부(36)와 접속된 n개의 임계치 레지스터(38)로 이루어진 것에 그 특징이 있다.
Patent KR-20010106828-A (KR)
Inventor: BAEK HAN SEUNG
IPC: C08L9/00
Filed: 2000-05-23
Abstract: 본 발명은 3,4-이소프렌 고무 10 중량부 이상 및 폴리부타디엔 고무 20 중량부 이상을 포함하는 디엔계 고무 100 중량부에 대해서, 실리카 5 내지 70 중량부, 카본 블랙 5 내지 70 중량부 및 합성 에스테르계 가소제 2 내지 10 중량부를 포함하는 스터드레스 타이어 트래드용 고무 조성물을 제공하기 위한 것이다. 
     본 발명에 따른 조성물은 아이스/스노우 제동성과 가공성을 개선시키고, 마모성 및 웨트 제동성을 현저히 향상시키는데 효과적이다.
Patent KR-20010106868-A (KR)
Inventor: KIM HONG RAE
Filed: 2000-05-23
Abstract: 본 발명은 구매 의뢰자가 사용 용도에 맞게 주문하면 그 주문에 따라 맞춤 제작되는 맞춤상품을 인터넷을 이용하여 전자상거래하는 방법에 관한 것이다. 
     이러한 인터넷을 이용한 맞춤상품 전자상거래 방법은, 적어도 하나 이상의 맞춤용품 취급점으로부터 맞춤용품 제작을 주문받아 주문물량을 확정하고 상기 맞춤용품을 제작하는 제작업체를 선정하는 웹서버와, 상기 웹서버와 접속 가능한 상기 맞춤용품 취급점의 웹기반 컴퓨터, 상기 웹서버와 접속 가능한 상기 맞춤용품 제작업체의 웹기반 컴퓨터를 포함한 시스템에서의 맞춤용품 전자상거래 방법에 있어서, 상기 웹서버가 상기 적어도 하나 이상의 맞춤용품 취급점으로부터 제품유형과 제품사양을 입력받아 상기 맞춤용품 제작을 주문받는 제 1 단계와, 상기 웹서버가 일정 기간동안 주문된 상기 맞춤용품의 물량을 확정하는 제 2 단계, 및 상기 웹서버가 상기 선정된 제작업체에게 상기 물량의 맞춤용품에 대한 제작을 하청하는 제 3 단계를 포함한다.
Patent KR-20000050239-A (KR)
Inventor: KIM HO KWANG
IPC: G06F17/24
Filed: 2000-05-30
Abstract: PURPOSE: A behavior-results for object and compiling method in game programming is provided so that utilize the results for object if the events are take place, by operating beforehand and storing the results for the possible event during the computer game. CONSTITUTION: A behavior-results for object and compiling method in game programming includes several steps. One can shorten the operating time for object behavior and can enhance the processing speed by composing of storing step, which stores the function for the possible event during the computer game when input the function(s1), for the first step. When a maximum value, a minimum value and the mean value of the special variables are decided in input mode(s3), the second step reading out the function which comes under the variables(s2). In the third step, It is corresponded the variables with the readout-function and operate the variables(s4). As the fourth step, the results are stored in the data table(s6), In the last step, the address in which results are stored and the variables are stored into the database by the fifth step.
Patent KR-20010109421-A (KR)
Inventor: AHN IN SUN
Filed: 2000-05-31
Abstract: 본 발명은 제품 성형후 우수한 금속질감 및 광택성을 가지며 제품내에 웰드라인의 발생이 적어 외관이 우수하고, 강성, 내충격성 및 내열성이 우수한 폴리프로필렌 수지 조성물에 관한 것이다. 본 발명의 폴리프로필렌 수지 조성물은 아이소탁틱 펩타드 분율이 96% 이상인 초고결정성 올레핀계 수지 30~70중량%, 폴리올레핀계 엘라스토머 10~25중량%, 불포화 카본산 또는 그 무수물을 그라프트한 변성수지 3~10중량%, 평균입경이 5㎛이하의 탈크 15~30중량% 및 실란 등 유기물질로 코팅된 알루미늄 조각을 포함하는 조색안료 2~8중량%를 포함하는 것을 특징으로 한다.
Patent KR-20010109655-A (KR)
Inventor: KIM JIN SU
Filed: 2000-06-01
Abstract: 본 발명은 종래의 모니터 측면에 외장형 스피커를 설치 및 탈착하기 위한 착탈장치에 관한 것으로서, 상세히는 스피커(10)를 모니터(9)에 고정하기 위한 착탈장치로써 플라스틱으로 이루어진 브라켓을 몰드로 성형하되, 그 전면 및 후면에 착탈부재(4)(6)(8)를 형성하여 이 착탈부재에 의해 스피커의 착탈이 용이한 구조로 되어 있고, 상기 착탈장치 후면의 제3착탈부재(8)가 삽입되는 스피커(10)의 삽입홈 (8')부위에 고무제를 적용함으로써, 스피커(10)의 고출력 동작시 발생되는 화면떨림 현상을 최소화 할 수 있도록 구성한 것을 특징으로 한다.
Patent KR-20010068196-A (KR)
Title: Device For Manufacturing The Ozone Water
Inventor: YOO BYUNG HO
IPC: C02F1/78
Filed: 2000-06-08
Abstract: PURPOSE: Provided is a jet sprayer for manufacturing ozonized water, which is characterized in that raw water is disinfected efficiently by mixing the raw water with ozonic water flowed in whirls. CONSTITUTION: The jet sprayer (A) is composed of the following parts: an influent pipe (10); a first main body (20) formed a screw hole (22) connected from a pressure gauge; an insertion body (30) to make the flow rate of raw water increase; a second main body (40) to mix raw water with ozonic water flowed in a first whirlpool chamber; a fixed spindle (50) equipped with screw-shaped whirlpool impellers (52); a third main body (70) fixed an outlet pipe and equipped with a whirlpool spring (60); and an ozone generator.
Patent KR-20010111927-A (KR)
Inventor: LEE MUN GYU
Filed: 2000-06-14
Abstract: 본 발명은 ＩＭＴ-2000 시스템에서의 광대역/협대역 겸용 기지국 송/수신 안테나 점검장치 및 그 방법, 더욱 상세하게는 PCS/DCS 시스템용 협대역(1.25MHz) 주파수 및 IMT-2000 시스템용 광대역(3.75MHz) 주파수를 공용으로 수용하는 기지국 송/수신 안테나의 정재파비를 진단해줌과 동시에 그 송/수신 안테나의 고장여부를 운용자에게 디스플레이시켜 주는 ＩＭＴ-2000 시스템에서의 광대역/협대역 겸용 기지국 송/수신 안테나 점검장치 및 그 방법에 관한 것으로서,   본 발명에 의한 ＩＭＴ-2000 시스템에서의 광대역/협대역 겸용 기지국 송/수신 안테나 점검장치 및 그 방법에 의하면, 운용자로 하여금 PCS/DCS 협대역 주파수 및 IMT-2000 광대역 주파수 겸용 기지국 송/수신 안테나의 고장여부를 손쉽게 점검할 수 있도록 해준다는 뛰어난 효과가 있다.
Patent KR-20020001477-A (KR)
Title: A method for manufacturing high carbon steel having clear sheared cross section
Inventor: CHOI MU HYEON
IPC: B22D11/00
Filed: 2000-06-29
Abstract: PURPOSE: Provided is a method for manufacturing high carbon steel having clear sheared cross section by controlling continuous casting speed and an amount of water spray on slab. CONSTITUTION: In the continuous casting of a molten steel comprising C 0.18-0.55wt.%, Si 0.15-0.25wt.%, Mn 0.35-0.55wt.%, P 0.020wt.% or less, S 0.005wt.% or less, soluble Al 0.020wt.% or less, Ca 10-30ppm, N 60ppm or less, the balance Fe, an amount of water spray is controlled within a range 0.6 to 0.8L/Kg as continuous casting at 1.0 to 1.3m/min.
Patent KR-20020006820-A (KR)
Title: An Airconditioner and An Air Handling Unit with Oxygen Generation Funtion
Inventor: NAM IM U
IPC: F24F1/06
Filed: 2000-07-13
Abstract: PURPOSE: An air conditioner having oxygen generating function is provided to improve the quality of indoor air by adjusting the amount of oxygen in the indoor air properly with an oxygen generator. CONSTITUTION: An air conditioner consists of an outdoor unit(100) and an indoor unit(200). The outdoor unit includes a compressor(110) and a condenser(120) for cooling and liquefying refrigerant gas from the compressor forcibly. An oxygen generating module(130) and an air compressor(140) are mounted on a side in the outdoor unit. The oxygen generating module is used with a membrane using selective infiltration principle of gas. The oxygen generating module separates oxygen having intermediate infiltration speed from nitrogen. The air compressor is used to obtain a large amount of air for the oxygen generating module. An evaporator(210) is mounted in the indoor unit, and a capillary tube(220) is formed on a side of the evaporator. An oxygen spraying nozzle(230) is connected with the oxygen generating module through a pipe(131). The quality of indoor air is improved to provide pleasant environment to a resident.
Patent KR-20020007563-A (KR)
Title: Multi-use gymnastic instruments
Inventor: CHOI GYU SU
IPC: A63B5/12
Filed: 2000-07-18
Abstract: PURPOSE: Provided is a multipurpose sport outfit which configures members of the sport outfit to organize the proper sport outfits in assembly so that it is easily delivered for children. CONSTITUTION: The multipurpose sport outfit largely consists of a support body to adjust the entire height and a single tread member to be combined with the support body. The support body(10) comprises the parts of: a support post(2) which is vertically fixed in the central part of a base member(1); a movable post(3) which is received in the support post to adjust the height of the support post; and a support plate which is fixed to the upper part of the movable post to form a central opening for matching to an area of the movable post. The single tread member fixes a certain length of an insertion hole in the lower center side to insert into the internal area of the movable post through the central opening of the support plate.
Patent KR-20000059187-A (KR)
Inventor: KIM GWAN DONG
Filed: 2000-07-20
Abstract: PURPOSE: A bank paper auction system through networks and the method are provided so that a bank paper seller can sell a bank paper at a lowest discount rate as bank paper purchasers propose discount rates smaller than an initial auction discount rate when the bank paper seller inputs the initial auction discount rate. CONSTITUTION: A bank paper purchaser accesses a web site executing bank paper auctions(302) and logs in(304). If the bank paper purchaser selects a bank paper purchase(306), a bank paper list is displayed stored in a proceeding auction database(308). If the bank paper purchaser selects a desired bank paper in the bank paper list(310), auction information for the selected bank paper is displayed(312). The bank paper purchaser inputs a desired bank paper discount rate(314). If there is a bank paper purchaser who inputted a discount rate identical to a final auction discount rate(316), the bank paper purchaser is determined as a successful bidder(322). If there is no bank paper purchaser who inputted a discount rate identical to a final auction discount rate(318), a bank paper purchaser who inputted the lowest discount rate is determined as a successful bidder(322). An e-mail that cash should be transmitted to a required bank account is sent to an awarded bank paper purchaser(324).
Patent KR-20000072115-A (KR)
Inventor: LEE HI MAN
IPC: B21B45/04
Filed: 2000-07-28
Abstract: PURPOSE: A continuous scale removing line using a brush roll is provided to suppress the use of acid pickling solution as a pollutant and to save a raw cost by minimizing facilities. CONSTITUTION: A strip or a sheet plate from a pay off reel is pushed by a pinch roll(1) to be at a solution injector(2). The solution injector injects a scale removing solution to the strip or the sheet plate. The strip and the sheet plate are moved to a wire brush roll(3) to be brushed by brush rolls(3-1,3-2,3-3,3-4). The brush rolls have different roughness. Then, the strip or the sheet plate is moved to an air sprayer to remove the remaining solution by a high pressure and high temperature air, and finally moved to an exit pinch roll for processing the surface.
Patent KR-20020011231-A (KR)
Title: Preparation of highly pure copper oxide from waste etchant of pcb industry
Inventor: EO YONG SEON
IPC: C01G3/02
Filed: 2000-08-01
Abstract: PURPOSE: Provided is a preparation method of high purity and homogeneous copper oxide(CuO) powder by adding acidic liquid waste, CuCl2, generated from PCB industry to an alkaline solution and sintering. CONSTITUTION: The simple preparation method is as follows: adding 1L of acidic liquid waste(CuCl2 solution) comprising 19-25.5wt.% of CuCl2, 7-10wt.% of HCl and 64.5-74wt.% of H2O to an 33wt.%(950-1000g) of alkaline solution such as NaOH, KOH or LiOH at 0-30deg.C for copper hydroxide slurry(blue); heating at 50-100deg.C for 1-3hrs. to get needle-shaped precipitates(black); sintering at 200-500deg.C. The simple method is characterized by adding CuCl2 solution to the alkaline solution in turn, and enables to prepare high purity CuO more than 97%.
Patent KR-20000072121-A (KR)
Inventor: KIM HONG NYUN
IPC: G06F17/00
Filed: 2000-08-01
Abstract: PURPOSE: A domain name server building system and an operation method of the same are provided for clearing a recognition of a domain service system with respect to a domain name demander and a user and building an independent domain name service system based on each country. CONSTITUTION: A user who wants operates an internet site generates a Korean domain name in korean which will be used in an internet site and directly registers to a domain name registration organ or requests a domain registration to a registration proxy organ for thereby obtaining a Korean domain name. The Korean domain name registered in the name server of the registration organ is stored into a name server DB as a Korean information. Therefore, the match of the Korean domain address with respect to the internet site is directly performed without converting to English.
Patent KR-20010049969-A (KR)
Title: Fabrication of clad hollow cathode magnetron sputter targets
Inventor: KULKARNI SHAILESH
IPC: B23K20/08
Filed: 2000-08-02
Abstract: PURPOSE: A method for fabricating clad hollow cathode magnetron sputter targets that are lighter in weight and less expensive than monolithic targets is provided for use in the physical vapor deposition of thin films on semiconductor devices. CONSTITUTION: A target material plate(12) of dense, uniform microstructure is preferably formed by heat treatment. The plate(12) is joined to an inexpensive cladding material sheet(10) by any of diffusion bonding, explosive welding, friction welding, etc., to form a more lightweight and/or less expensive cladding/target integrated body(20), which is formed into HCM sputtering target by deep drawing, etc. Further, a flange(22) is attached to the target by means of mechanical joining, electron beam welding, etc.
Patent KR-20020012030-A (KR)
Title: Electron gun for CPT
Inventor: KIM DEOK HO
IPC: H01J29/48
Filed: 2000-08-05
Abstract: PURPOSE: An electron gun for a color cathode ray tube is provided to form a small uniform electron beam spot over the fluorescence surface by reducing spherical aberration of an electronic lens due to a restricted effective aperture of each electrode. CONSTITUTION: An electron gun for a color cathode ray tube comprises triple cathodes(11), a control electrode(12) and a screen electrode(13) arranged in-line, a first and a second focusing electrodes(14,15) for forming a first quadruple electrode lens, and a third and a fourth focusing electrodes(16,17) for forming a second quadruple electrode lens. Each of the electrodes has electron beam passage holes to form the electron lens. Each incident side of the control electrode(12), the screen electrode(13) and the first focusing electrode(14) has triple electron beam passage holes. The exit side of the first focusing electrode(14) has a vertically longish hole(14bh). The incident side of the second focusing electrode(15) has a circular or horizontally longish hole(15ah). The exit side of the third focusing electrode(15) has a vertically longish hole(15bh). The incident side of the fourth focusing electrode(17) has a circular or horizontally longish hole(17ah). The exit side of the second focusing electrode(15) and the incident side of the third focusing electrode(16) have holes(15bh,16ah) smaller than other holes(14bh,15ah,16bh,17ah).
Patent KR-20020012051-A (KR)
Title: Vcsel chip set having monitoring photo diode and method thereof
Inventor: CHO JEONG HWAN
IPC: H01S5/10
Filed: 2000-08-05
Abstract: PURPOSE: A vertical cavity surface emitting laser chip set having a monitoring photo diode and its manufacturing method are provided to remove difficulty in element arrangement without supplementarily installing separate mechanism and obtain high yield by making chips that are grown at separate wafers, respectively, as a chip set. CONSTITUTION: A vertical cavity surface emitting laser chip set(100) comprises a vertical cavity surface emitting laser chip(110) and a monitoring photo diode chip(120) attached to the bottom side of the vertical cavity surface emitting laser chip(110). The vertical cavity surface emitting laser chip(110) includes a laser chip substrate(112), an emitting surface(114) on the top and the bottom of the substrate(112), an anode pattern(116) on the top of the substrate(112), one end of the anode pattern(116) coupled to the emitting surface(114), a cathode pattern on the back of the substrate(112), and many metal pads on the corners of the back of the substrate(112). The monitoring photo diode chip(120) includes a photo diode substrate(122), a receiving surface(123) on the top of the substrate(122), a cathode pattern(124) on the top of the substrate(122), one end of the cathode pattern(124) coupled to the receiving surface(123), metal pads(125) on the corners of the top of the substrate(122), metal balls(126) attached to the top of the metal pads(125) of the substrate(122) and the back of the metal pads of the substrate(112), and an anode pattern on the back of the substrate(122).
Patent KR-20020012461-A (KR)
Title: operating method of charged internet web-site
Inventor: CHO SUNG HUN
IPC: G06F17/00
Filed: 2000-08-07
Abstract: PURPOSE: A method for managing an Internet charged site is provided to supply a plurality of profits and high-quality services to an operator of a site and a consumer using the site by improving a currently used Internet site operating method. CONSTITUTION: Users pay an entrance fee(using actual money, electronic money, or a point mileage of other company) and join to an Internet site, respectively. In case that members use a service of a site, the members are classified into a non-member, an associate member, and a normal member, and a using possibility of the corresponding service of the members is detected. A specific amount of money is accumulated in an Internet bankbook of a client discriminatively in accordance with a character and a grade of a service. If a member requests a return of the amount of money, the corresponding amount of money is paid. If a member does not request a return of the amount of money, an interest of the corresponding amount of money is increased in the Internet bankbook.
Patent KR-20020014632-A (KR)
Title: Disaster prevention system
Inventor: YANG HAN GYU
IPC: H04B3/54
Filed: 2000-08-16
Abstract: PURPOSE: A disaster preventing system is provided to more stably and quickly put out a fire and take shelter by implementing a dual warning system having a warning device and a display unit in a fire signal processing system as well as in a fire signal relay system. CONSTITUTION: A fire sensing system(100) is installed in every room of a building. A fire signal relay system(200) is installed at every 25m on each floor. A fire signal processing system(300) is installed in a controlling part of a building. The fire signal processing system(300), as well as the fire signal relay system(200), includes a warning device and a display unit, making a dual warning system. A fire signal is transmitted between the fire sensing system(100) and the fire signal relay system(200) by a public wave method through antennas(102, 104) by a radio communication method. A fire signal is transmitted and received between the fire signal relay system(200) and the fire signal processing system(300) by a power line communication method by using a DTMF signal as a carrier for modulating the fire signal by the medium of a general AC power. A controller(314) of the fire signal processing system(300) has a program to provide a fire occurrence information for recognizing an accurate fire occurrence position to a fire putting out agency such as a fire station for a quick disaster preventing process. A DC power supply unit(216) is installed at the fire signal processing system(300) to supply a DC power required for transmission and reception of the fire signal through the power line in the case of power failure.
Patent KR-20010000220-A (KR)
Inventor: KIM KYOUNG MAN
IPC: A23L27/60
Filed: 2000-08-23
Abstract: PURPOSE: A method of making salad dressing containing corns and onion as main ingredients is provided for giving a savory taste and unique oniony flavor to the dressing product. CONSTITUTION: The salad dressing is prepared by mixing 24-28wt% of drained corns from processed canned corn and 26-30wt% of minced onion with 15-26wt% of cooking oil, 10-12wt% of vinegar, 2.1-2.4wt% of salt and 11-13wt% of condensed milk, pulverizing, stirring and dissolving the mixed materials in a mixer, and then sterilizing and heating the viscous dressing before sealing up a container filled with the dressing.
Patent KR-20020016319-A (KR)
Inventor: JUNG GWAN YEOL
IPC: G09G3/36
Filed: 2000-08-25
Abstract: PURPOSE: An STN LCD(super twisted nematic liquid crystal display) driving circuit is provided to largely reduce a circuit area and therefore an entire chip size by reducing constitutional elements for driving one channel. CONSTITUTION: An STN LCD driving circuit comprises a first switching circuit(302a), a second switching circuit(302b) and a plurality of channel driving circuits. The first switching circuit includes a first switching element(306) for outputting a first voltage as a full down voltage when a first control signal is logic 0, and a second switching element(308) for outputting a second voltage as a full down voltage when a first control signal is logic 1. The second switching circuit includes a third switching element(310) for outputting a third voltage as a full up voltage when a first control signal is logic 0, and a fourth switching element(312) for outputting a fourth voltage as a full up voltage when a first control signal is logic 1. The channel driving circuit includes an output control circuit for generating a second control signal, a full up device for outputting full up voltage as a third control signal, and a full down device for outputting full down voltage as a third control signal.
Patent KR-20020017357-A (KR)
Title: Real-time diagnostics and monitoring system and method for transportation machinery by using sound visualization system and method of band-limited noise
Inventor: KIM YANG HAN
IPC: G03H3/00
Filed: 2000-08-30
Abstract: PURPOSE: A system and a method for imaging narrow-band noise, system and method for monitoring the state of a transport machine using the system and method are provided to visualize a moving noise source generating narrow-band noise and to monitor the state of the transport machine in real time in a noncontact state. CONSTITUTION: A narrow-band noise imaging system includes bottom and side microphone arrays(1,3), a reference microphone(4), and a signal processor(8). The microphone arrays measure a sound pressure of narrow-band noise that is emitted from a transport machine. The reference microphone is attached to the transport machine to measure the spectrum of the entire band of the narrow-band noise and the spectrum of the center frequency of the noise. The signal processor calculates the ratio of the spectrum of the entire band to the spectrum of the center frequency and divides the sound pressure measured by the microphone arrays by a sound pressure according to the ratio to obtain noise hologram so as to image the noise.