公开(公告)号：US4281403A

公开(公告)日：1981-07-28

申请号：US74587

申请日：1979-09-12

申请人： Lee E. Siems ,  James A. Porter

发明人： Lee E. Siems ,  James A. Porter

IPC分类号： G01V1/24

CPC分类号： G01V1/24 ,  G01V2200/12

摘要： A decentralized seismic data recording system includes a central station and a plurality of remote seismic recording units that are incommunicado with the central station during a normal recording operation. A master clock is provided in the central station. A local clock is provided in each remote recording unit. At the beginning of a work period, the local clocks are synchronized with the master clock. Thereafter, a plurality of seismic data recordings are made. At the end of a work period, the time difference due to tuning drift between the master clock and each respective local clock is ascertained and is recorded. The time difference is linearly prorated over the recordings made during the work period, thereby synchronizing the time base of each seismic data recording with the master clock. Provision is made to validate each seismic data recording to prevent accidental recording of false data in event of a misfire or a non-fire of the seismic source.

摘要翻译： 分散的地震数据记录系统包括在正常记录操作期间与中心站无关的中心站和多个远程地震记录单元。 中央车站提供主时钟。 每个远程记录单元都提供本地时钟。 在工作时间的开始，本地时钟与主时钟同步。 此后，进行多个地震数据记录。 在工作周期结束时，确定由主时钟和每个相应的本地时钟之间的调谐漂移引起的时间差并被记录。 时间差在工作期间的记录上是线性比例的，从而将每个地震数据记录的时基与主时钟同步。 提供了验证每个地震数据记录，以防止在地震源的失火或不起火的情况下意外记录虚假数据。

公开(公告)号：US4031506A

公开(公告)日：1977-06-21

申请号：US664614

申请日：1976-03-08

申请人： Lee E. Siems

发明人： Lee E. Siems

IPC分类号： H03H7/01 ,  G01D5/12 ,  G01V1/16 ,  G01V1/22 ,  G01V1/24 ,  G01V1/38 ,  G08C15/00 ,  G08C15/06 ,  H03G3/20 ,  H03H7/06 ,  H03H11/04 ,  H03H11/12 ,  H03H19/00 ,  H04J3/04 ,  H04J3/10 ,  H04L25/49 ,  H03K17/56 ,  H04Q11/04

CPC分类号： H03G3/3026 ,  G01D5/12 ,  G01V1/16 ,  G01V1/22 ,  G01V1/245 ,  G01V1/38 ,  G08C15/00 ,  H03H11/04 ,  H03H11/1213 ,  H03H19/002 ,  H03H19/008 ,  H04J3/04 ,  H04J3/10 ,  H04L25/4904

摘要： A multi-channel analog system comprises a plurality of channels each being adapted to receive analog signals from a signal source such as a seismic sensor. A multiplexer multiplexes the analog channels prior to converting the channels' signals into digital numbers. Each channel has a DC blocking capacitor connected to one terminal of a normally-open multiplexer switch; the other terminal of the switch is coupled to a multiplexer bus. In accordance with this invention, the bus is connected to a common resistor. Control means consecutively close the multiplexer switches so that the capacitor whose switch has been closed forms a high-pass filter with the common resistor. The resistor is preferably connected as the input resistor to an operational amplifier. The capacitors, the multiplexer, and the common resistor form a multiplexer-commutated high-pass filter which is particularly adapted for multi-channel seismic systems.

摘要翻译： 多通道模拟系统包括多个通道，每个通道适于从诸如地震传感器的信号源接收模拟信号。 在将信道的信号转换为数字数字之前，复用器复用多路复用模拟信道。 每个通道具有连接到常开多路开关的一个端子的隔直流电容器; 开关的另一个端子耦合到多路复用器总线。 根据本发明，总线连接到公共电阻器。 控制装置连续关闭多路开关，使得开关闭合的电容器与公共电阻器形成高通滤波器。 电阻器优选地作为输入电阻器连接到运算放大器。 电容器，多路复用器和公共电阻器形成多路复用器换向高通滤波器，其特别适用于多声道地震系统。

公开(公告)号：US4005273A

公开(公告)日：1977-01-25

申请号：US664615

申请日：1976-03-08

申请人： Lee E. Siems

发明人： Lee E. Siems

IPC分类号： H04J3/10 ,  H04J3/04

CPC分类号： H04J3/10

摘要： In a multi-channel multiplexed system, each signal-receiving input channel has a DC blocking capacitor. One of the input channels to the multiplexer is grounded making this channel a test channel. A signal-conditioner-and-amplifier network (SCAN) couples the multiplexer output to a utilization device. The spurious voltage developed across the capacitor in the test channel combined with the offset voltage across the SCAN will be substantially the same as each one of the spurious voltages developed across the capacitors in the other input channels in combination with the SCAN offset voltage. A sample-and-hold circuit consisting of a series capacitor and a normally ungrounded shunt switch is connected between the output of the SCAN and the input to the utilization device. Periodically, as during each scan cycle of the multiplexer, the capacitor in the sample-and-hold circuit will be charged to and hold a sample voltage having equal amplitude but opposite polarity to the spurious voltage developed across the test channel capacitor in combination with the SCAN.

摘要翻译： 在多通道多路复用系统中，每个信号接收输入通道具有直流阻塞电容器。 多路复用器的输入通道之一接地，使该通道成为测试通道。 信号调节器和放大器网络（SCAN）将多路复用器输出耦合到利用装置。 在测试通道中跨越电容器产生的杂散电压与SCAN两端的偏移电压相结合将与其他输入通道中的电容器上产生的每个杂散电压结合SCAN偏移电压基本相同。 在SCAN的输出和使用设备的输入之间连接由串联电容器和通常不接地的并联开关组成的采样保持电路。 周期性地，在多路复用器的每个扫描周期期间，采样和保持电路中的电容器将被充电并保持具有相同振幅但与测试通道电容器两端产生的杂散电压相反的极性的采样电压， 扫描。

公开(公告)号：US06591025B1

公开(公告)日：2003-07-08

申请号：US09524918

申请日：2000-03-13

申请人： Lee E. Siems ,  Han-Sun Choi ,  Greyson Knapp ,  Reinis Kanders ,  John L. Maida ,  Tom O'Brien

发明人： Lee E. Siems ,  Han-Sun Choi ,  Greyson Knapp ,  Reinis Kanders ,  John L. Maida ,  Tom O'Brien

IPC分类号： G02B600

CPC分类号： G01V1/201 ,  G01H3/005 ,  G01H9/004

摘要： A fiber optic acoustic sensor system including an optical conductor having low reflectivity mirrors is provided. Optical sensors are provided by sections of the optical conductor bounded by pairs of the low reflectivity mirrors. Pulses of light are injected into the optical conductor and reflected by the low reflectivity mirrors. The reflected pulses of light are processed using a compensating interferometer to generate interference patterns representative of the environmental conditions acting upon the optical conductor.

摘要翻译： 提供一种包括具有低反射镜的光导体的光纤声学传感器系统。 光传感器由光导体的由低反射镜对构成的部分提供。 光的脉冲被注入光导体并由低反射镜反射。 使用补偿干涉仪来处理光的反射脉冲，以产生表示作用在光导体上的环境条件的干涉图。

公开(公告)号：USH276H

公开(公告)日：1987-05-05

申请号：US878710

申请日：1986-06-25

申请人： Lee E. Siems

发明人： Lee E. Siems

IPC分类号： G01V1/26 ,  G04F10/00

CPC分类号： G04F10/00 ,  G01V1/26

摘要： A method and apparatus for detecting the instant on explosive is detonated by way of an optical signal. A length of optical fiber has one end wrapped around or positioned near the explosive with the other end coupled to a remote recorder. The end of the fiber at the explosive has been cleaved so as to internally reflect an optical signal propagating therein. A beam of radiation is launched into the fiber at the record where it is reflected from the distal end and redirected back to the recorder where it is detected. Detonation of the explosive destroys the reflective end of the optical fiber causing the radiation to leak from the broken fiber end. The instant the recorder does not receive the reflected radiation is the instant of the explosive detonated.

公开(公告)号：US4117448A

公开(公告)日：1978-09-26

申请号：US787176

申请日：1977-04-13

申请人： Lee E. Siems

发明人： Lee E. Siems

IPC分类号： G01V1/22

CPC分类号： G01V1/22

摘要： The telemetric system consists of a large number of identical cable sections laid over the ground end-to-end, in a long array or "spread". The cables have a number of external connectors along their length for connecting geophone groups. The cables are electrically and physically interconnected by a like number of data transceiver modules. The data transceiver modules contain circuitry to receive and process data from the various geophone groups. A recording and control unit is connected to the spread at some convenient accessible location. The recording and control unit transmits control signals to the respective data transceiver modules. In response to the control signals, the respective modules transmit digital seismic signals, back to the recording and control unit. The cable sections and data transceiver modules are not polarized; that is, it is immaterial which end of a cable section is plugged into which side of a transceiver module. The same telemetric link that is used to transmit command and interrogation pulses to the respective transceiver modules is also used to receive digital data words from the respective modules. Accordingly, a direction sense circuit in each module determines the direction of any given module with respect to the recording unit and orders the digital logic contained within the module to electrically "face" the recording unit.

公开(公告)号：US06522797B1

公开(公告)日：2003-02-18

申请号：US09144953

申请日：1998-09-01

申请人： Lee E. Siems ,  Grevson Knapp ,  John Maida

发明人： Lee E. Siems ,  Grevson Knapp ,  John Maida

IPC分类号： G02B600

CPC分类号： G01V1/201 ,  G01H3/005 ,  G01H9/004

摘要： A marine seismic fiber optic acoustic sensor system having internal mirrors with a low reflectivity written into the fiber to form a series of continuous, linear sensors incorporated in a single fiber, each sensor bounded by a pair of internal mirrors. A pulsed laser provides optical signals to the fiber at a pulse width less than twice the travel time to assure that there will be no phase or frequency modulation of signals returned from the sensors and reflected optical energy is returned through the same fiber to an optical coupler where it is input to a compensating interferometer to produce interference signals which are then time division multiplexed to produce signals corresponding to acoustic signals received by each mirror bound sensor. Calibration to remove local temperature effects is provided by using a desensitized reference fiber with internal mirrors identical to the sensitized fiber, by a piezoelectric stretcher built into the fiber or any other conventional calibration technique.

摘要翻译： 海洋地震光纤声学传感器系统具有写入光纤中的低反射率的内部反射镜，以形成一系列连接的线性传感器，其结合在单个光纤中，每个传感器由一对内部反射镜限定。 脉冲激光器以小于传播时间的两倍的脉冲宽度向光纤提供光信号，以确保不会对从传感器返回的信号进行相位或频率调制，并且将反射的光能量通过相同的光纤返回到光耦合器 其中它被输入到补偿干涉仪以产生干扰信号，然后对其进行时分复用以产生对应于由每个镜面界定传感器接收的声信号的信号。 通过使用与感光纤维相同的内部反射镜的脱敏参考光纤，通过内置于光纤中的压电担架或任何其他常规校准技术来提供校准以消除局部温度影响。

公开(公告)号：US5627798A

公开(公告)日：1997-05-06

申请号：US435889

申请日：1995-05-05

申请人： Lee E. Siems ,  Gary L. Scott

发明人： Lee E. Siems ,  Gary L. Scott

IPC分类号： G01V1/22 ,  G02B6/38

CPC分类号： G02B6/383 ,  G01V1/22

摘要： The invention is a seismic acquisition system for communicating seismic sensor signals to a recording unit, including a control unit and analog-to-digital conveyer units connected to the control unit. The conveyer units each include integral interconnecting cables having an hermaphroditic connector at each end, analog seismic sensor inputs and signal processing circuitry disposed within a watertight housing forming part of the cables. The circuitry includes analog-to-digital conveyers connected to the analog inputs, a buffer for digitized signals transmitted to one converter unit from other converter units interconnected to the conveyer unit opposite to the control unit connection, a digital transceiver for retransmission of digitized sensor signals and the buffered signals at a first data rate to the control unit. The control unit includes a second buffer for signals from the conveyer unit and for signals retransmitted from other control units serially codected to the control unit. The control unit further includes a second transceiver for retransmitting buffered signals from the conveyer units and from other control units to the recording unit at a second data rate higher than the first data rate.A preferred embodiment includes a data buffering unit interconnected between the recording unit and the control unit. The buffering unit comprises another digital transceiver for communicating control signals from the recording unit and sending digited signals to the recording unit, and a buffer for storing digitized signals from the control unit and from other ones of the buffering units interconnected to the one buffering unit.

摘要翻译： 本发明是用于将地震传感器信号传送到记录单元的地震采集系统，包括连接到控制单元的控制单元和模拟 - 数字传送单元。 输送单元各自包括在每端具有阴模连接器的整体互连电缆，模拟地震传感器输入和信号处理电路，其布置在构成电缆部分的水密外壳内。 该电路包括连接到模拟输入的模拟数字传送器，用于从互连到与控制单元连接相对的传送单元的其它转换器单元传输到一个转换器单元的数字化信号的缓冲器，用于重传数字化传感器信号的数字收发器 并且将缓冲的信号以第一数据速率传送到控制单元。 控制单元包括用于来自传送单元的信号的第二缓冲器以及从串行地编码到控制单元的其它控制单元重发的信号。 控制单元还包括第二收发器，用于以比第一数据速率更高的第二数据速率将来自输送单元的缓冲信号和从其它控制单元传送到记录单元。 优选实施例包括在记录单元和控制单元之间互连的数据缓冲单元。 缓冲单元包括用于传送来自记录单元的控制信号并将数字信号发送到记录单元的另一数字收发器，以及用于存储来自控制单元和互连到一个缓冲单元的其它缓冲单元的数字化信号的缓冲器。

公开(公告)号：US5058080A

公开(公告)日：1991-10-15

申请号：US280097

申请日：1988-12-05

申请人： Lee E. Siems ,  Marvin K. Amerine ,  Loring C. Chien ,  William P. Vorheier

发明人： Lee E. Siems ,  Marvin K. Amerine ,  Loring C. Chien ,  William P. Vorheier

IPC分类号： G01V1/22

CPC分类号： G01V1/22

摘要： In a marine seismic data acquisition system, a plurality of seismic data transmission paths are utilized to conduct seismic data to a central recording unit from seismic data acquisition modules positioned along the length of cable. Signals from a plurality of data acquisition modules are applied to each of the transmission paths. Data acquisition modules which apply seismic signals to a given transmission path may be spaced and substantially uniform distances along the length of the cable and may be interspersed with data acquisition modules which apply seismic data to each of the other transmission paths. The operation of the data acquisition modules is synchronized by means of a signal transmitted continually from a central recording unit. Each section of the cable includes a plurality of remote units distributed along the cable section for detecting seismic signal. Each section includes a data acquisition module which receives command signals from a central recording unit and which receives seismic data signals from the remote units and transmits seismic data signals to the central recording unit.

公开(公告)号：US4654660A

公开(公告)日：1987-03-31

申请号：US690110

申请日：1985-01-09

申请人： Lee E. Siems

发明人： Lee E. Siems

IPC分类号： G01V1/22 ,  H04B10/29

CPC分类号： H04B10/29 ,  G01V1/22

摘要： An optical telemetric system for use in seismic exploration consists generally of a recorder, a plurality of transceivers, and a like number of cable sections interconnecting each transceiver in parallel with others and the recording unit. A fiber optic transmission channel is provided within each cable section and is interconnected by an optic-fiber delay loop within each transceiver, thus providing a contiguous, optically-continuous data and control channel. Within each transceiver, a logic circuit and associated data acquisition unit is optically coupled to the data and control channel so as to bidirectionally receive signals from, and transmit signals to the recorder. The logic circuit of each transceiver also is able to measure the strength of a received signal propagating in the data and control channel, and if necessary, augments the signal in the original propagation direction. An optical direction sensing circuit is interfaced with each logic circuit for electronically facing each transceiver towards the recorder. The instant invention thus reduces the effect of the series reliability law upon regenerated data.

摘要翻译： 用于地震勘探的光学遥测系统通常由记录器，多个收发器和相同数量的电缆部分组成，每个收发器与其他收发器并联并联和记录单元。 在每个电缆部分内提供光纤传输通道，并且通过每个收发器内的光纤延迟环互连，从而提供连续的，光学上连续的数据和控制信道。 在每个收发器内，逻辑电路和相关联的数据采集单元光学耦合到数据和控制信道，以便双向地从记录器接收信号和发送信号。 每个收发器的逻辑电路还能够测量在数据和控制信道中传播的接收信号的强度，如果需要，可以增加原始传播方向的信号。 光学方向感测电路与每个逻辑电路接口，用于将每个收发器电子地朝向记录器。 因此，本发明减少了对再生数据的串联可靠性定律的影响。