58 results about "Tiltmeter" patented technology

A seismic exploration method and unit comprised of continuous recording, self-contained wireless seismometer units or pods. The self-contained unit may include a tilt meter, a compass and a mechanically gimbaled clock platform. Upon retrieval, seismic data recorded by the unit can be extracted and the unit can be charged, tested, re-synchronized, and operation can be re-initiated without the need to open the unit's case. The unit may include an additional geophone to mechanically vibrate the unit to gauge the degree of coupling between the unit and the earth. The unit may correct seismic data for the effects of crystal aging arising from the clock. Deployment location of the unit may be determined tracking linear and angular acceleration from an initial position. The unit may utilize multiple geophones angularly oriented to one another in order to redundantly measure seismic activity in a particular plane.

An electronic inclinometer and a centrally controlled network of inclinometers are disclosed. A resistive or capacitive inclinometer sensor measures inclination in two orthogonal axes. Measuring electrodes can be provided on the exterior of a dielectric sensor cell isolated from a sensor fluid. In another embodiment, measuring electrodes comprise pins partially immersed in a cell fluid contained in a metal housing and reference electrodes are provided to compensate for temperature and electrochemical changes in the sensor. Sensor signals are converted to frequency signals that are processed by a microprocessor having a unique logical address and preferably having an external solid state memory. A plurality of inclinometers can be arranged in multiple logical branches to be centrally controlled. The controller operates the network in real time or in a programmable timed autonomous mode. Network data can be presented in a graphical 3D format using software provided on the controller.

Method and apparatus for monitoring growth of fracture during hydraulic fracturing treatment of a ground formation. A series of tiltmeters are positioned at spaced apart tiltmeter stations at which tilt changes due to hydraulic fracturing treatment are measurable by those tiltmeters. Tilt measurements obtained from the tiltmeters at progressive times during the fracture treatment are compared with estimated tilt changes estimated from an assumed hydraulic fracturing propagation. Useful values for initially undetermined values of parameters of the model are derived using an inverse procedure. The data analysis may be performed in real time as the hydraulic treatment progresses using differing propagation models to determine a most probable model.

A device and method for quickly and accurately leveling a surface in either the horizontal or vertical plane while not in proximity to the surface being leveled. The device comprises a rigid base designed to be places on any surface to be leveled, inclinometer circuitry used to determine the position of the rigid base relative to level or plumb, wireless circuitry used to transmit the results of the inclinometer to a remotely transportable unit containing a digital display used to read the results of the inclinometer reading.

The treatment well tiltmeter system comprises one or more tiltmeter assemblies which are located within an active treatment well. The treatment well tiltmeter system provides data from the downhole tiltmeters, and can be used to map hydraulic fracture growth or other subsurface processes from the collected downhole tilt data versus time. The system provides tilt data inversion of data from each of the treatment well tiltmeter assemblies, and provides isolation of data signals from noise associated with the treatment well environment. As well, the treatment well tiltmeter system provides geomechanical modeling for treatment well processes.

This inclinometer comprises an upper part (4), a lower part (6) forming a pendulum suspended from the upper part by an articulation (8), at least two portions of optic fibre (20, 22) placed on either side of said articulation, the ends of each portion being fastened to the two parts, each portion being previously put under tension between said parts, and at least one Bragg grating (24) in one of the portions. Any variation in the inclination of a structure to which is fastened the upper part induces a stress on the grating, which then modifies a light propagating in the portion where it is placed. The variation in inclination is determined from the modified light. The invention applies in particular to the surveillance of civil engineering structures.

A seismic exploration method and unit comprised of continuous recording, self-contained wireless seismometer units or pods. The self-contained unit may include a tilt meter, a compass and a mechanically gimbaled clock platform. Upon retrieval, seismic data recorded by the unit can be extracted and the unit can be charged, tested, re-synchronized, and operation can be re-initiated without the need to open the unit's case. The unit may include an additional geophone to mechanically vibrate the unit gauge the degree of coupling between the unit and the earth. The unit may correct seismic data for the effects of crystal aging arising from the clock. Deployment location of the unit may be determined tracking linear and angular acceleration from an initial position. The unit may utilize multiple geophones angularly oriented to one another in order to redundantly measure seismic activity in a particular plane.

The invention discloses an omni-directional tide observation system under the well, which relates to a tide observation system. In the invention, a system mainframe box (B) on the ground (A) is connected with an instrument body (E) which is arranged in a protecting pipe (D) of a drilling well through the transmission cable (C). The structure of the interior of instrument body (E) comprises a hoisting hole (1), a pressing spring (3), a supporting pole (4), a location device (5), a ball head joint (6), a circuit unit, a gravimeter (9), a clinometer (11), a primary leveling device (12) and a precise leveling device (13), which are connected in turn from top to bottom. The invention integrates the gravity instrument with the clinometers, which is put under the well; the gravity solid tide in the upright direction and the horizontal solid tide in two directions can be observed synchronously at the same time and place; the invention provides reliable, precise and continuous observation data; the invention can also be used in a general cave with the qualification of a triangle base.

A node for use in a wireless communication network that facilitates alignment of the node with other nodes in the network and a method for aligning the node. The node includes mounting fixtures that enables the mounting of GPS receivers and a tiltmeter to obtain position and bearing information for the node. The node contains alignment features that enable the positioning of an optical transmitter / receiver pair in the node using the data obtained from the GPS receivers and tiltmeter.

The invention provides a monitoring device mainly for sensing ground displacement, including the fiber Bragg grating sensored deflectometer and the signal interrogator / computer system. The device uses a segmented design that consists of a flexible tube (referred to as the flexible segment) and two rigid segments and thus referred to as the double hinged FBG segmented deflectometer (DH-FBG-SD). For field installation, multiple DH-FBG-SD units are connected together to form a string as it is inserted into a grouted-in-place inclinometer casing. The distortion of the inclinometer casing induced by ground movement causes relative rotation of the inserted DH-FBG-SD. All of the DH-FBG-SD units are connected to an FBG interrogator / computer system situated on ground surface. The FBG signals are recorded and analyzed by the interrogator / computer system.

A seismic exploration method and unit comprised of continuous recording, self-contained wireless seismometer units or pods. The self-contained unit may include a tilt meter, a compass and a mechanically gimbaled clock platform. Upon retrieval, seismic data recorded by the unit can be extracted and the unit can be charged, tested, re-synchronized, and operation can be re-initiated without the need to open the unit's case. The unit may include an additional geophone to mechanically vibrate the unit gauge the degree of coupling between the unit and the earth. The unit may correct seismic data for the effects of crystal aging arising from the clock. Deployment location of the unit may be determined tracking linear and angular acceleration from an initial position. The unit may utilize multiple geophones angularly oriented to one another in order to redundantly measure seismic activity in a particular plane.

An apparatus for determining the orientation of a borehole at a point along the borehole, includes a tiltmeter for measuring the inclination of the borehole relative to the vertical, a vector magnetic sensor for measuring the amplitude of the component of the Earth's magnetic field along the axis of the borehole, and means for computing the orientation of the tubular sonde from the measurements of inclination and amplitude of the component of the Earth's magnetic field aligned with axis of the sonde.

The invention relates to an optical inclinometer, in which radiation (S) is emitted from a radiation source (2). After passing through a receptacle (6, 6') containing at least one first medium (11, 13), said radiation (S) is reproduced in a camera (9). Information concerning the inclination of the inclinometer can be gathered from the position of the first medium (11, 13), in particular a liquid level, in relation to the inclinometer or the camera (9). The recording of the position of the first medium (11, 13) by a camera (9) permits the evaluation of a plurality of characteristics, in particular the form, dimension and position of a boundary layer (14).

Methods and related systems are described for downhole positioning of sensors such as accelerometers, gyroscopes, tiltmeters and geophones. The sensor or sensors are mounted within the spherical rotor of a spherical motor such that the device can be actively positioned in one or more orientations by activating the spherical motor.

The invention relates to the field of sinking pipe calibration measurement, in particular to a high-precision inclinometer calibration method, comprising the steps of charging a segment, to be mounted, of a sinking pipe to a shallow dock area, mounting a hydrostatic level and a first inclinometer in the segment to be mounted, and using the hydrostatic level and the first inclinometer to acquire initial inclinations of the segment to be mounted; charging the segment to be mounted to a deep dock area, mounting a second inclinometer, and using the initial inclination of the segment measured by the hydrostatic level to calibrate the second inclinometer; after the second inclinometer is calibrated, comparing with the initial inclination acquired by the first inclinometer; after qualification is verified, mounting the segment on a bed. The invention is intended to provide the high-precision inclinometer calibration method having low external environmental impact, good measurement synchronism and small calibration error.

The invention provides a method and device for measuring the verticality of an offshore wind power steel pile. The device comprises a double-shaft clinometer, a first data transfer radio and an error feedback device used for calculating, displaying and storing verticality and radial height difference signals of the wind power steel pile according to measured data of the double-shaft clinometer. The double-shaft clinometer is arranged on one plane of a pile hammer through a first shock absorber, the plane is parallel to the piling plane of the pile hammer, the first data transfer radio is arranged on the pile hammer through a second shock absorber, and the first data transfer radio and the error feedback device carry out data exchange through a wireless transmitting antenna. According to the method and device for measuring the verticality of the offshore wind power steel pile, the verticality of the wind powder steel pile can be really monitored in the whole process, piling efficiency is improved, and a reliable numerical value basis is provided for adjustment of the verticality of the wind power steel pile.

The invention discloses a method for obtaining the deflection of a dam body on the basis of measurement values of measured points of a limited inclinometer. Correlation vector regression with high generalization capability for small samples is adopted, measurement values of existing limited inclination angles are used as output variables, influencing factors such as coordinates of the measured points, the water level, the temperature, the pore pressure and the time are adopted as input variables, a correlation vector machine model is established, the tangent value of the inclination angle of an arbitrary spatial point on a measurement line at specific time is predicted, space coordinates are adopted for performing explicit optimal polynomial fitting on the tangent values of the inclinationangles on the measurement line, integration is performed on an optimal polynomial, and a tilt meter or the displacement measurement value of the top (such as an opening of an inclination measurementtube) of the measurement line of the inclinometer or the displacement measurement value of the bottom (such as the bottom of the inclination measurement tube) of the measurement line of the inclinometer is utilized to determine an integration constant, so that the horizontal displacement distribution (deflection) along the axis of an entire vertical inclination measurement hole is obtained. The measurement values of different time and space are simultaneously utilized, the influence factors such as external loads and the time and space are taken into account, and the method can be popularizedto other situations such as a slope, other projects of the slope and the horizontal layout of the measurement line.

A tiltmeter to measure a variation in inclination of a structure from a given starting position. The tiltmeter has two pots, each pot contains an identical volume and identical height of an identical liquid. A communication device connects the two pots and allows the liquid to flow between the two pots by the principle of communicating vessels. Two optical measuring devices are provided, one optical measuring device per pot. Each optical measuring device measures a variation in height of the level of liquid in the associated pot. The optical measuring devices are fiber optic devices coupled to a common light source.

The invention discloses a portable water tube tiltmeter with double-measuring bar. The tiltmeter consists of two measuring bars, a transparent water tube, a dial gauge measuring and reading device anda plurality of stainless steel measuring seats; each measuring bar comprises a transparent measuring cylinder, a valve, a support bar and a stainless steel measuring head, the support bar is connected with the stainless steel measuring head and the transparent cylinder, and the valve is arranged on the transparent cylinder; a plurality of stainless steel measuring seats are buried at the parts ofdifferent measuring points respectively, the two measuring bars are located at different measuring points respectively, the stainless steel measuring heads of the two measuring bars are inserted intothe stainless steel measuring seats of different measuring points respectively, the water tube is communicated with the transparent cylinders of the two measuring bars by the valve, the transparent cylinders are filled with water, and the dial gauge measuring and reading device is inserted into the transparent cylinders to measure relative sedimentation values among the measuring points. The tiltmeter has the obvious advantages of higher precision, convenient carrying, no rust corrosion and aging problems, easy measuring point protection and instrument maintenance, lower cost and the like.

An apparatus for determining the orientation of a borehole at a point along the borehole, includes a tiltmeter for measuring the inclination of the borehole relative to the vertical, a vector magnetic sensor for measuring the amplitude of the component of the Earth's magnetic field along the axis of the borehole, and means for computing the orientation of the tubular sonde from the measurements of inclination and amplitude of the component of the Earth's magnetic field aligned with axis of the sonde.

The invention discloses a crustal inclination measurement device and method adopting a force balance feedback quartz horizontal pendulum. The crustal inclination measurement device comprises a bottom plate, wherein a tower-shaped quartz rack is fixed on the bottom plate. A quartz pendulum rod is suspended on the rack through two quartz suspension springs, and is at an approximately horizontal state. A pendulum bob is inserted and mounted at one end of the pendulum rod, and first and second parallel metal plates are respectively arranged on the two sides of the vertically arranged pendulum bob. The pendulum bob is parallel with the first and second parallel metal plates, so as to form a differential plate capacitor, wherein the pendulum bob serves as a moving plate, and the first and second parallel metal plates serve as static plates. The first and second parallel metal plates are connected with output terminals of a fixed direct current voltage generation unit and a sine waveform generation unit; the pendulum bob is connected with the input terminal of a crustal inclination measurement circuit; the output terminal of the crustal inclination measurement circuit is connected with the pendulum bob through a feedback unit. The crustal inclination measurement device can realize accurate measurement of crustal inclination angle when small inclination of the ground occurs, and a closed-loop feedback structure is constructed to solves problems in the existing quartz horizontal pendulum clinometers.

A method for measuring drift displacement of high building includes setting tiltmeter on observation point at certain height of high building to measure dip angle of high building at observation point then enabling to accurately calculate out drift displacement of observation point according to height difference of multiple set observation point and said dip angle.

The invention discloses a micro-incline generation device for field proving of a clinometer, and relates to a geological instrument proving technique. The device consists of a base, support screw rods, cushion blocks, a direct-current motor, a driving gear, a driven gear, piezoelectric ceramic, a sensing unit and a touch sheet. The method comprises the following steps of: (1) coarsely tuning for the first time; (2) coarsely tuning for the second time; (3) finely tuning by utilizing the piezoelectric ceramic 70; (4) measuring micro displacement of the clinometer through a precision displacement measuring meter; and (5) calculating the angle variation of the clinometer by the micro displacement, and comparing the angle variation of the clinometer with the output voltage variation of the clinometer, thereby obtaining a scale value. The micro-incline generation device for field proving of the clinometer provided by the invention has a small volume, is convenient to carry, is convenient to operate, saves time, is compatible with proving, and is suitable for proving the clinometer.