212 results about "Velocity ratio" patented technology

The instant invention provides a method for processing converted-wave data into interpretable images using a compact two-parameter model. The method broadly comprises the steps of: collecting both P-wave and converted-wave seismic data; identifying the arrival times of the P-wave and the converted-wave data; computing the vertical velocity ratio from the arrival time data; computing the moveout velocity ratio from the corresponding moveout velocities; computing the effective velocity ratio from the vertical velocity ratio and the moveout velocity ratio; and computing the conversion point from the short-spread P-wave moveout velocity for each reflector, from the effective velocity ratio, the C-wave moveout velocity ratio, and from the arrival time data.

An alertness monitoring system includes: means to measure velocity and amplitude of eyelid and eye movement; and storage means to continuously record the measurements. A data processor calculates the blink amplitude to velocity ratio and/or the saccade amplitude to velocity ratio and compares the measurements against a predetermined scale. The scale is derived from averaged measurements of the eye and eyelid movement parameters for a sample population measured against predetermined incremental blood alcohol levels. The output of the system can include a display for showing the alertness measurement based on the scale, or an alarm means triggered by the scale reading reaching a predetermined limit based an the blood alcohol level scale.

Provided is an intelligent respirator and aerating method of using the respirator, belonging to the technical field of medical instruments. The intelligent respirator comprises a circuit, an air channel, an operation panel, and a display; a flow meter and a transducer are installed inside the air channel; a power supply board is installed inside the circuit; the circuit further comprises a microcomputer electronic control panel and a vital sign transducer; the microcomputer electronic control panel is installed inside the circuit; the microcomputer electronic control panel is in communication connection respectively with the power supply board, the operation panel, the display, the air channel and the vital sign transducer. The aerating method of using the intelligent respirator comprises the following steps: collecting, by the microcomputer electronic control panel via the vital sign transducer, information changes of vital sign parameters, controlling the velocity ratio of air and oxygen in the air channel, and controlling a warning device, thereby achieving the intelligent adjustment to the oxygen concentration of the patient and sending out an alarm for emergency treatments. The intelligent respirator and aerating method of using the respirator can achieve the intelligent control, thus achieving the adjustment of oxygen concentration as in need and in time without changing the tidal volume.

The invention discloses a method for determining a fluid by utilizing seismic fluid impedance. The method comprises the following steps: exciting and recording a seismic wave to obtain an angle gather; eliminating signal frequency distortion caused by a normal moveout correction stretching effect; extracting longitudinal wave reflectivity attributes and weighted transverse wave reflectivity attributes from the compensated angle gather; computing improved fluid factors; obtaining logging data to obtain a fluid impedance curve; performing iterative inversion to obtain a section of the fluid impedance; qualitatively analyzing fluid anomalies in pores by the fluid factors, and describing spatial distribution of the fluid by the fluid impedance. The method helps accurately extract the fluid factors and directly identify components of the fluid in the pores without an assumption of a velocity ratio of the longitudinal wave to the transverse wave as well as the relation between density and the longitudinal wave velocity, which reduces ambiguity of gas layer identification, realizes direct conversion from the fluid factors to the fluid impedance and improves the precision of gas reservoir identification.

A vehicle velocity detector 15 is provided, velocity V is detected from position data of the vehicle calculated by using signal from satellites, which is received by a GPS receiver 11 installed to a vehicle body, wheel rotation velocity V_w0 detected by a wheel velocity sensor 12 is corrected in accordance with tire inner pressure detected by a pressure sensor 13 so as to obtain wheel rotation velocity (correction value) V_w, velocity ratio R=(V_w/V), which is ratio of the corrected wheel rotation velocity V_w and the detected wheel velocity V, is calculated and tire wear amount is estimated in accordance with velocity ratio R so that tire wear amount can be measured precisely without processing the tire tread portion.

The invention provides a method for performing joint inversion on the P-wave and S-wave velocity ratio of a reservoir by utilizing P-wave and converted wave data. According to the method, an inversion target function is constructed by adopting a concept that a gamma change rate acquired from gather seismic reflection information and a gamma change rate acquired from travel time information are infinitely approximate, and key parameters of the target function comprise a P-wave intercept, a P-wave gradient, a converted wave gradient and the P-wave and S-wave velocity ratio calculated according to the travel time information, and can be acquired from the actually input amplitude versus offset (AVO) information of a P-wave and converted wave gather and the travel time information, so that the target function can be rationally constructed, and a finally inverted P-wave and S-wave velocity ratio elastic parameter is accurate.

A method and apparatus for measuring drowsiness particularly in vehicle operators measures the amplitude to velocity ratio for eyelids closing and opening during blinking as well as measuring duration of opening and closing. The average values for the amplitude to velocity ratios for opening and closing are weighted and added to give a drowsiness measure that is compared to a scale of drowsiness based on data collected from alert and drowsy subjects. Other eye movements can be used in the weighted algorithm. The scale of drowsiness predicts the onset of drowsiness levels that render an operator unfit to continue.

A blind lift device includes a fixed support, a rotating member next to the fixed support, a bead chain passed over the rotating member, a first planetary gear train between the fixed support and the rotating member, a brake member joined to the rotating member, a cap, a second planetary gear set between the brake member and the cap, and a main shaft; the second planetary gear set has a connecting shaft portion projecting through the cap, and planetary gears engaged with the brake member and an internal gear of the cap; the main shaft is joined to the connecting shaft portion and a covering member of a blind; thus, the rotational velocity ratio of the main shaft to the rotating member can be changed to suit different covering members by means of selecting and using suitable planetary gear trains according to the dimensions and weights of the covering members.

The invention provides a converted wave anisotropy velocity analysis method and device. The method includes the steps that the vertical velocity ratio, the effective velocity ratio and equivalent anisotropy parameters of converted waves are worked out according to the stacked section of longitudinal waves, the stacked section of the converted waves, the velocity of the longitudinal waves, the velocity of the converted waves and anisotropy parameters of the converted waves; with the speed of the converted waves, the vertical velocity ratio, the effective velocity ratio and the equivalent anisotropy parameters of the converted waves which are obtained as the initial parameters of pre-stack time migration of seismic data of the converted waves, the velocity parameter of pre-stack time migration of the converted waves is worked out, the first time of pre-stack time migration is performed, and a common imaging point gather is acquired; by analyzing the velocity of the converted waves corrected by residual moveout and the anisotropy parameters of the converted waves in the common imaging point gather, the common imaging point gather is acquired, and the velocity of the converted waves and the anisotropy parameters of the converted waves continue to be corrected till the acquired common imaging point gather is in even alignment in window. Through the converted wave anisotropy velocity analysis method and device, the accuracy of the converted wave anisotropy velocity analysis result is improved, and the processing cost is reduced.

An ultrasonic pulse is applied from a transmission probe for longitudinal waves kept in contact with the external surface of a concrete structure into the interior of the structure, and a reflected wave returning after being reflected by the boundary face of the concrete structure is detected with a reception probe for longitudinal waves kept in contact with the external surface of a concrete structure. As the first peak recognized in the waveform of the reflected wave represents the reaching time T1 of the bottom face echo which has undergone no mode conversion, and the subsequently obtained second peak, in about 1.3 to 1.7 times when first peak appeared, represents the reaching time T2 of the delayed echo which has undergone a mode conversion, the sonic velocity ratio R of longitudinal wave to transverse wave is calculated from these reaching times T1 and T2. Then, object physical quantities corresponding to the sonic velocity ratio R are figured out from correlations known in advance regarding the concrete structure between the sonic velocity ratio R and object physical quantities.

The invention discloses a plastics disintegrator, comprising a frame, which is characterized in that two crushing rolls are arranged side by side on the frame, the crushing rolls are connected with a power drive unit, a plurality of crushing teeth are arranged on the crushing rolls, a plurality of compartment grooves are arranged between the adjacent crushing teeth, and the crushing teeth are spirally arranged on the external circumference of the crushing rolls and inclined arranged to form 45 degree of angle with the tangent to periphery of the crushing rolls; when using, the waste plastics are squeezed into space between the two crushing rolls, the two crushing rolls are driven to rotate with different velocity ratios, the crushing teeth arranged on the two crushing rolls can tear and break the wasted plastics, create the cleaning condition for plastics and improve the stability of product quality.

The invention provides an asphalt mixing plant aggregate gradation online detection and overflowing prevention control method and system. The system comprises a plurality of feeding bins, a pluralityof aggregate conveying belts, terminal equipment, a PLC controller, a frequency converter and a plurality of motors, wherein the quantities of the feeding bins, aggregate conveying belts and motors are the same; an aggregate conveying belt is arranged under each feeding bin; a camera obscura is fixedly arranged on a guide rail of each aggregate conveying belt; light equipment is arranged in the camera obscura; an image collector is arranged at the top of the camera obscura; the terminal equipment is connected with the image collector, so as to receive and process collected images; the terminalequipment is connected with the PLC controller, so as to send a velocity ratio required to be achieved by each aggregate conveying belt; the PLC controller is connected with the frequency converter;the frequency converter is connected with all the motors; each motor is connected with an aggregate conveying belt, so as to perform speed control. The system can ensure that aggregate gradation is qualified and matching requirements are met, and can effectively prevent the phenomenon of overflowing during asphalt mixing.

The present invention relates to a production method of a plastic optical fiber which comprises the steps of heat drawing an undrawn plastic optical fiber obtained by melt spinning and annealing the drawn fiber at a circumferential velocity ratio between the front and rear rollers (circumferential velocity of a rear roller/circumferential velocity of a front roller) of 0.5 to 1.2 under heating conditions which satisfy 4≦y≦−1.5x+330 and (Tgc−5)° C.≦x≦(Tgc+110)° C. [Tgc: a glass transition temperature of a core, x: an annealing temperature (° C.), and y: an annealing time (seconds)]. According to the present invention, a plastic optical fiber having a small thermal shrinkage ratio and excellent heat resistance can be provided.

The present invention discloses a method and an installation of monitoring and controlling an oxygen inhalator. Under the control of a microcomputer, an upper limit and a lower limit of a patient blood oxygen saturation are set, and a preset flow velocity ratio is set for the oxygen inhalator. The oxygen inhalator is opened and supplied with oxygen at the preset flow velocity, after a period of time, the blood oxygen saturation inside the body of the patient who inhales oxygen is inspected, the flow velocity of a proportion electromagnetic valve which is in series in an gas path of the oxygen inhalator is regulated properly until the blood oxygen saturation is within a preset range. The apparatus not only has the characteristics of the oxygen inhalator and a monitor but also closely combines the oxygen inhalator and the monitor to realize an interaction. The apparatus provides monitoring of life sign parameters such as the blood oxygen saturation and can automatically change an oxygen inhalation flow velocity with the preset flow velocity range according to the timely collected changes of the patient life singe such as the blood oxygen saturation and accordingly a patient oxygen inhalation concentration is changed, then the patient life sign is improved.

The invention discloses a method for determining a large transverse wave static correction value of a converted wave demodulator probe, which is adaptive to conditions of low signal-to-noise ratio and complex construction. The method comprises: calibrating a group of reflecting layers on longitudinal wave and converted wave common demodulator probe superposing data; picking a group of reflecting layer positions to obtain a longitudinal wave reflection time along the layers on longitudinal wave common demodulator probe superposing data; picking a group of reflecting layer positions to obtain a converted wave reflection time along the layers on the converted wave common demodulator probe superposing data; on the longitudinal wave and converted wave common demodulator probe superposing data, selecting points which can represent longitudinal wave and converted wave construction forms, and coupling same layer positions of longitudinal waves and converted waves to obtain a sparse longitudinal and transverse wave velocity ratio value gamma [0]; and finally calculating to obtain the transverse wave static correction value of the converted wave demodulator probe. By using the method provided by the invention, a large transverse wave static correction value of a converted wave demodulator probe can be effectively determined.

The invention relates to an adhesive tape winding machine. The winding machine comprises a rack, a drive motor, a line bundle drawing mechanism, an adhesive tape winding mechanism and a line bundle guide mechanism, wherein the line bundle drawing mechanism, the adhesive tape winding mechanism and the line bundle guide mechanism are sequentially arranged on the rack; the line bundle drawing mechanism comprises a transmission case, a drawing drive roll and a drawing driven roll, wherein the drive motor and the input shaft of the transmission case are connected in a mechanical transmission way, and the output shaft of the transmission case and the drawing drive roll are connected in a mechanical transmission way; the adhesive tape winding mechanism comprises an annular runner on which an adhesive tape mounting device is arranged, and the annular runner and the drive motor are connected in a mechanical transmission way; and the line bundle guide mechanism comprises a line bundle guide wheel and a support frame, wherein the line bundle guide wheel and the support frame are rotationally connected. According to the adhesive tape winding machine provided by the invention, the adhesive tape winding mechanism and the line bundle moving mechanism are driven by a same motor, so that the movement velocity ratio is constant, adhesive tapes are uniformly wound, the energy consumption is low, and the equipment cost is low.

The invention relates to a non-circular gear transmission case and a transmission mechanism thereof. The transmission mechanism is a combined type transmission mechanism with a non-uniform velocity ratio, comprising a non-circular gear transmission case (24), a low speed motor (20), a chain wheel train (21, 22, 23) or a belt wheel train. The output torque and the output rotating speed of the transmission mechanism are consistent with a mainframe load change form; therefore, the transmission mechanism can save energy by a big margin when being used in a mechanism requiring transmission with a non-uniform velocity ratio. The pitch curve shape of non-circular gears (27, 28), and geometric and initial position parameters are determined by an optimized design according to the mainframe load change form, continuity of the pitch curve and fabrication procedure and the like. When the non-circular gears (27, 28) are connected with a circular gear train and a circular gear planetary gear train power, non-circular gear transmission cases of various forms can be formed. An energy-saving beam pumping unit can be formed by removing a speed reducer, a belt wheel and an electric motor and installing the non-circular gear transmission case and the transmission mechanism thereof on a conventional beam pumping unit.

The invention discloses a yarn method and device for implementing color mixing of double-color roving through asynchronous/synchronous two-stage drafting. A drafting and twisting system comprises a primary drafting unit and a secondary drafting unit arranged at the front and back and a double-ingredient combining twisting unit; the primary drafting unit comprises a combined rear roller and an intermediate roller; the combined rear roller comprises a first rear roller and a second rear roller abreast arranged on the same rear roller shaft; the linear velocity ratio Vq/Vz of a front roller to the intermediate roller is constant, and the yarn blending ratio is dynamically regulated online so as to regulate the yarn color through regulating the rotating speed of the first rear roller and/or second rear roller. The color mixing proportion control for the colored spun yarn produced by the method is more uniform and precise, and the color change is richer.

The invention discloses a method for evaluating the degree of disturbance of soft soil by using shear wave velocity, which comprises the following steps: using a surface wave testing device to perform in-situ shear wave velocity testing; drilling samples; and using a portable piezoelectric ceramic bending element to shear the soil The wave velocity test device carries out the on-site shear wave velocity test; the ratio of the on-site shear wave velocity to the in-situ shear wave velocity is used as the judgment standard, and an on-site evaluation is performed according to the classification standard to judge whether the soil sample meets the sampling requirements; before the indoor strength test, the portable pressure is used again. The electric ceramic bending element soil shear wave velocity test device carries out the indoor shear wave velocity test; the ratio of the indoor shear wave velocity to the in-situ shear wave velocity is used as the judgment standard, and the indoor secondary evaluation is carried out according to the classification standard to judge whether the soil sample meets the strength test requirements. The invention has simple steps and accurate test results, can judge the disturbance degree of the sample on site and in the room, and can meet the requirements of general engineering survey and strength test.