Phase compensating circuitry for seismic vibrator including a dummy vibrator reference network专利检索-振动台施工工具及设备专利检索查询-专利查询网

Phase compensating circuitry for seismic vibrator including a dummy vibrator reference network

阅读：273发布：2023-02-06

专利汇可以提供Phase compensating circuitry for seismic vibrator including a dummy vibrator reference network专利检索，专利查询，专利分析的服务。并且A seismic vibrator is driven by a reference signal which is passed through an adjustable time delay or phase shift network. The time delay or phase shift introduced by the adjustable network is adjusted by phase correction means to keep the seismic vibrator output synchronized with the output of a ''''dummy vibrator'''' phase-shifting reference network that is also driven by the same reference signal. The phase-shift characteristic of the reference network is chosen to closely match the combined phase-shift characteristic of the seismic vibrator and the adjustable network.，下面是Phase compensating circuitry for seismic vibrator including a dummy vibrator reference network专利的具体信息内容。

权利要求

1. A seismic surveying system comprising: first means for supplying a first signal; at least one seismic vibrator having said first signal as an input signal and generating a vibratory output signal; second means for supplying a second signal that is phase-locked with said first signal and that lags said first signal in phase by increasing amounts with increasing signal frequency; phase detector means associated with each vibrator and having said second signal and the associated vibrator''s vibratory output signal as input signals for generating a phase adjustment signal whose characteristics reflect the phase difference between the two phase detector means input signals; and phase adjustment means associated with each vibrator and having said phase adjustment signal as an input signal for adjusting the relative phase of the input and vibratory output signals of the associated vibrator.

2. A system in accordance with claim 1 wherein said second means comprises a phase shifting network having an input to which said first signal is applied and having an output at which said second signal appears.

3. A system in accordance with claim 2 wherein the phase shifting network has phase shift characteristics which resemble those of the seismic vibrator.

4. A system in accordance with claim 2 wherein the phase shifting network comprises one or more serially-connected stages and wherein the phase shifting characteristics of each stage are approximately in accordance with the following equatiOn: A B + C log D where A is the stage phase shift and where B and C are arbitrary constants.

5. A system in accordance with claim 1 wherein the phase adjustment means is disposed in the path of said first signal between said first means and the associated vibrator, and wherein the phase adjustment means comprises a variable phase-shifting network the phase shift of which is controlled by said phase adjustment signal.

6. A system in accordance with claim 1 wherein said phase detector means comprises a multiplier having two inputs into which the phase detector means input signals are fed, and having an output at which an error signal proportional to the product of the input signals appears, and means for integrating at least the fluctuating components of said error signal to form said phase adjustment signal.

7. A system in accordance with claim 6 wherein said means for integrating comprises an amplifier having both resistive and capacitive negative feedback in sufficient quantities to function as an amplifier of direct current signal components and simultaneously as an integrator of fluctuating signal components.

8. A system in accordance with claim 7 which includes adjustable means for generating a direct current signal which signal is fed into said amplifier to adjust the initial condition of the system.

9. A system in accordance with claim 1 wherein the vibratory output signal of each vibrator is generated by an integrating accelerometer amplifier having an input which is supplied with a signal from an accelerometer that is mechanically connected to the vibrator.

10. A method of synchronizing seismic vibrators comprising the steps of: generating a first swept sinusoid signal; generating a second swept sinusoid signal that is phase-locked with said first signal but that lags the first signal in phase by increasing amounts with increased frequency; generating a third signal that is synchronized with the vibratory output of each vibrator; and supplying to each of said vibrators a phase shifted version of said first swept sinusoid signal, with the amount of phase shift at any given frequency being chosen to maintain an approximately constant phase difference between said second and third signals.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
一种预制钢桁架混凝土组合结构装配式叠合梁及其制造方法	2020-05-08	58
用于流化床制粒过程中颗粒性质在线检测的装置	2020-05-11	782
一种振动转动综合试验装置	2020-05-11	882
宽频带扭振试验系统	2020-05-08	115
一种汽车事件数据记录系统的测试方法	2020-05-12	505
一种振动测试跌落台	2020-05-11	214
一种集约式高产能叠合板生产线	2020-05-11	131
一种轨道交通电气箱试验装置	2020-05-12	323
一种粉剂药品配制仪	2020-05-08	683
一种混凝土小预制构件翻转脱模装置	2020-05-11	480

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

振动台热门专利

热门分类

Phase compensating circuitry for seismic vibrator including a dummy vibrator reference network

该功能需要专业版企业版VIP权限，您可以：