公开(公告)号：WO9825437A3

公开(公告)日：1998-10-01

申请号：PCT/US9723159

申请日：1997-12-04

Applicant: INPUT OUTPUT INC

Inventor： CHANG WIN H ,  BADGER ALGERNON S ,  SIMENSKY BERNARD

IPC: G01V1/18 ,  G10K9/122 ,  H01L41/22

CPC classification number: G01V1/186 ,  G10K9/122

Abstract: Method of making an acoustic transducer (20) includes the steps of: a) assembling a previously polarized crystal (36) with a pair of solid circular metal plates (24, 28) positioned to sandwich the piezoelectric ceramic crystal (36) between them, wherein an epoxy adhesive is interposed between the metal plates (24, 28) and the piezoelectric ceramic crystal (36) to form an acoustic transducer assembly (20); b) curing the acoustic transducer assembly (20) at temperatures less than 150 degrees centigrade; c) encapsulating the acoustic transducer assembly (20) in a flexible case with a polyurethane potting sealant to form a potted assembly; d) curing the potted assembly at temperatures less than 150 degrees centigrade to form a hydrophone.

公开(公告)号：WO1998032309A1

公开(公告)日：1998-07-23

申请号：PCT/US1997023938

申请日：1997-12-18

Applicant: INPUT/OUTPUT, INC.

Inventor： INPUT/OUTPUT, INC. ,  CHANG, Win, H. ,  BADGER, Algernon, S. ,  LUCE, Richard, H. ,  LAMANCE, David, S. ,  NGUYEN, Hoan, P. ,  NEIGHBORS, Christopher, A.

IPC: H04R24/00

CPC classification number: G01V1/186

Abstract: A low-profile hydrophone module for a marine seismic system (10) includes a block (108) having a curved surface (118) and a receiving surface (130) in which an open cavity (134) is disposed, a hydrophone assembly, to which lead wires (154) attach, disposed in the cavity, lead wires which pass out of the cavity, and a sound-transmitting material which fills the cavity. In another feature, the hydrophone assembly includes a hydrophone and a baffle material (162), the baffle material enclosing the hydrophone, the cavity is sealed aroud the lead wires, the sound-transmitting material is oil (170), and a cover sealingly affixes over the cavity. In another feature, the hydrophone assembly includes a hydrophone and a frame, the cavity is sealed around the lead wires, the sound-transmitting material is a potting sealant (135), and a cover sealingly affixes over the cavity.

Abstract translation: 一种用于海洋地震系统（10）的低调水听器模块包括具有弯曲表面（118）和其中设置有开放空腔（134）的接收表面（130）的块（108），水听器组件 所述导线（154）附接，设置在所述空腔中，从所述空腔通过的引线，以及填充所述空腔的透声材料。 在另一个特征中，水听器组件包括水听器和挡板材料（162），挡板材料包围水听器，空腔被密封在导线上，透声材料是油（170），盖子密封地固定 在空腔上。 在另一个特征中，水听器组件包括水听器和框架，空腔围绕引线密封，声透射材料是灌封密封剂（135），盖子密封地粘贴在空腔上。

公开(公告)号：WO1998025437A2

公开(公告)日：1998-06-11

申请号：PCT/US1997023159

申请日：1997-12-04

Applicant: INPUT/OUTPUT, INC.

Inventor： INPUT/OUTPUT, INC. ,  CHANG, Win, H. ,  BADGER, Algernon, S. ,  SIMENSKY, Bernard

IPC: H04R00/00

CPC classification number: G01V1/186 ,  G10K9/122

Abstract: A method of making an acoustic transducer includes the steps of: a) assembling a previously polarized piezoelectric crystal with a pair of solid circular metal plates positioned to sandwich the piezoelectric ceramic crystal between them, wherein an epoxy adhesive is interposed between the metal plates and the piezoelectric ceramic crystal to form an acoustic transducer assembly; b) curing the acoustic transducer assembly at temperatures less than 150 degrees centigrade; c) encapsulating the acoustic transducer assembly in a flexible case with a polyurethane potting sealant to form a potted assembly; and d) curing the potted assembly at temperatures less than 150 degrees centigrade to form a hydrophone.

Abstract translation: 一种制造声换能器的方法包括以下步骤：a）将先前偏振的压电晶体与一对实心圆形金属板组装在一起，定位成将压电陶瓷晶体夹在它们之间，其中环氧粘合剂插在金属板和 压电陶瓷晶体形成声换能器组件; b）在低于150摄氏度的温度下固化声换能器组件; c）将所述声换能器组件用聚氨酯灌封密封剂封装在柔性壳体中以形成盆组件; 以及d）在低于150摄氏度的温度下固化盆栽组件以形成水听器。

公开(公告)号：WO1989003536A1

公开(公告)日：1989-04-20

申请号：PCT/US1988003419

申请日：1988-10-03

Applicant: INPUT/OUTPUT, INC.

Inventor： INPUT/OUTPUT, INC. ,  CARROLL, Paul, E. ,  JAMES, Roy, W., III ,  BOWEN, Charles, K. ,  SMITH, Gillan, C.

IPC: G01V01/24

CPC classification number: G01V1/364

Abstract: An improved geophysical data acquisition system is disclosed for enhancing effective system bandwidth of a seismic signal having an amplitude frequency spectrum characterized by high amplitude low frequencies and low amplitude high frequencies. A low-cut filter (35) is provided which has a frequency response with its low frequency end attenuation limited. The low-cut filter (35) has the effect of increasing effective channel bandwith while simultaneously allowing low frequency signals from deep within the earth to be included in the output signal. Effective channel bandwidth is increased because low frequency seismic signals are attenuated, automatically allowing channel gain to be increased by a gain ranging amplifier. Increased channel gain automatically amplifies the low-amplitude high-frequency end of the spectrum resulting in increased effective bandwidth. A high frequency boost filter (30) is provided whereby the high frequency signal components of the seismic signals may be further relatively amplified thereby enhancing the channel effective bandwidth. The boost filter (30) is provided in the system's input stage in order to keep its effect on system input noise to a minimum.

Abstract translation: 公开了一种改进的地球物理数据采集系统，用于增强具有以高振幅低频和低振幅高频为特征的振幅频谱的地震信号的有效系统带宽。 提供了一种低截止滤波器（35），其具有频率响应，其低频衰减受限制。 低截止滤波器（35）具有增加有效信道频带的效果，同时允许来自地球内深处的低频信号被包括在输出信号中。 由于低频地震信号被衰减，有效的信道带宽增加，可以通过增益测距放大器自动增加信道增益。 增加的通道增益自动放大频谱的低振幅高频端，从而增加有效带宽。 提供了一种高频提升滤波器（30），由此可以进一步相对放大地震信号的高频信号分量，从而增强信道有效带宽。 升压滤波器（30）被提供在系统的输入级中，以便将其对系统输入噪声的影响降至最低。

公开(公告)号：WO1987005404A1

公开(公告)日：1987-09-11

申请号：PCT/US1987000307

申请日：1987-02-11

Applicant: INPUT/OUTPUT, INC.

Inventor： INPUT/OUTPUT, INC. ,  ABRAMS, Michael, Lee ,  RICE, Charles, Geofrrey ,  CARROLL, Paul, E. ,  JAMES, Roy, Wilson, III

IPC: G01V01/36

CPC classification number: G01V1/36 ,  G01V2210/32

Abstract: The system for suppressing an ambient noise signal which contaminates a desired signal includes a noise pickup detector (21) for detecting the ambient noise signal. A noise discriminator (22) processes the detected noise signal into noise data. A reference noise generator (40) converts the noise data into a reference noise signal. The noise generator (40) automatically adjusts the reference noise signal to correspond with changes in the noise signal as it is being detected. A filter (24) filters the reference noise signal into an error signal which is adapted to remove the noise signal from the contaminated signal. A cross-correlator (42) cross-correlates the contaminated signal with the reference noise signal and adjusts the filter (24) to produce the required error signal.