1219 results about "Time curve" patented technology

A method and apparatus are used for training adjustment in sports, particularly in running sports, in which light is radiated into the body tissue of a test person by at least one light source, the light intensity reflected in the body tissue is measured via at least one light sensor, a temporally oscillating measurement quantity is derived from the measured light intensity via an evaluator, a minima in the time curve of the measurement quantity are determined, and a performance rating from which the current metabolic state of the test person can be read out is generated via analysis of a plurality of temporally successive minima and displayed.

A method is provided for determining analyte concentrations, for example glucose concentrations, that utilizes a dynamic determination of the appropriate time for making a glucose measurement, for example when a current versus time curve substantially conforms to a Cottrell decay, or when the current is established in a plateau region. Dynamic determination of the time to take the measurement allows each strip to operate in the shortest appropriate time frame, thereby avoiding using an average measurement time that may be longer than necessary for some strips and too short for others.

An electronic winch monitoring system for a winch having a fixed-ratio gearbox with input and output shafts, a winch drum connected to the output shaft, and an auxiliary brake connected to the output shaft activated by reducing the pressure in a brake release hydraulic circuit. The system comprises an input shaft speed sensor, an output shaft speed sensor, and an electronic control unit having a monitoring section and a brake control section. The monitoring section receives the speed signals, processes them to produce a calculated ratio of actual input to output shaft speeds, and produces a fault indication signal when the value of the difference between the calculated speed ratio and the fixed ratio exceeds a predetermined value. The brake control section, upon receiving the fault signal, reduces the hydraulic pressure in the brake circuit using a nonlinear pressure-time profile to engage the auxiliary brake and stop the winch drum.

The invention discloses a system for predicting geologic hazard based on rainfall intensity, moisture content of slope soil and deformation. The system comprises an automatic rainfall gauge, a soil moisture sensor, an omnibearing tilt sensor, an omnibearing vision sensor, an embedded system and a monitoring center computer, wherein the automatic rainfall gauge is used for monitoring rainfall and rainfall intensity of a geologic hazard point; the soil moisture sensor is used for monitoring moisture in soil at the geologic hazard point; the omnibearing tilt sensor is used for detecting earth surface deformation and internal deformation of the geologic hazard point; the omnibearing vision sensor is used for evaluating geologic hazard scale; the embedded system is used for wirelessly transmitting video and monitoring data; and the monitoring center computer is used for predicting and forecasting the geologic hazard and comprises a communication module, a data receiving module, a rainfall and rainfall intensity-based geologic hazard prediction module, a slope displacement-time curve-based geologic hazard prediction module, a soil moisture, rainfall and rainfall intensity-based geologichazard prediction module and a soil moisture content and slope deformation-based geologic hazard prediction module. The system has the advantages of complete monitoring means, accurate prediction andforecast, high intelligence and on-line real time.

A parenterally administrable, biodegradable microparticle preparation containing a biologically active substance which, during the first 24 hours after injection, exhibits a release of the active substance that is less than 25% of the total release, determined from a concentration-time curve in the form of the ratio between the area under the curve during the said first 24 hours and the total area under the curve in question

The invention relates to a method for creating the image of a sample surface to be analyzed, with a resolution which is better than 1 μm laterally in relation to the sample surface and better than 100 nm vertically in relation to said surface. According to the invention, the surface is scanned on a point-by-point basis by a scanning probe, the distance between the scanning probe and the sample surface at each scanning point being periodically modulated, in such a way that a force-time curve of the probe is produced for this point. The force-time curve is recorded at each scanning point, digitized using an A/D converter, evaluated online in real-time and stored, together with the entire data stream, in a first area of a memory device. One or several characteristic variables of the force-time curves are determined for each scanning point from the real-time evaluation results and the stored digitized force-time curves and an image of the sample surface is obtained from said characteristic variables of the scanning points.

A system for performing an intraparenchymal drug infusion including a pump device, a delivery tube, a sensor, and a processor. The tube is fluidly coupled to the pump device, establishing an infusate pathway from the pump to an infusate exit port of the delivery tube. The sensor is positioned to sense a parameter indicative of pressure in the infusate pathway. Finally, the processor is programmed to generate information indicative of infusate delivery effectiveness of a drug infusion procedure based upon information from the sensor. In some embodiments, the processor generates a net infusion pressure profile, such as a pressure-time curve, and prompts display of the pressure profile to a neurosurgeon for subsequent evaluation of infusate delivery effectiveness.

A method for determining the dispersion behavior of a contrast agent in the blood vessel system of an object for a rotational angiography procedure, comprising:

introducing the contrast agent into the blood vessel system and determining the time t1 of said introduction,

producing preparatory images of at least a part of the vascular system in order to determine the time curve for the uptake of the contrast agent in the arterial vascular system and, determining a time t2 for recording a rotational angiography image of an arterial phase,

producing preparatory images of at least a part of the vascular system in order to determine the time curve for the uptake of the contrast agent in the venous vascular system and, determining a time t3 for recording a rotational angiography image of a venous phase, and

determining the differences in the times t1, t2 and t3 for the rotational angiography.

The embodiment of the invention provides a method and a system for measuring a movable liquid surface of an oil well. Due to the adoption of a load sensor arranged on a well mouth beam hanger and a displacement sensor on the lower side of a walking beam of an oil pumping machine, the load and the displacement of a well oil pumping rod of the oil pumping machine can be measured, and a load and time curve and a displacement and time curve can be collected and acquired; a polish rod indicating diagram is acquired through the load and time curve and the displacement and time curve; a pump diagram is acquired according to the acquired polish rod indicating diagram; and by technical means for acquiring the depth of the movable liquid surface of the oil well through the pump diagram, the method and the system has the advantages that an effective scheme for continuously monitoring the movable liquid surface in real time at low cost is provided, a working mode that workers test the movable liquid surface of a mechanical recovering well on site is changed, the problems of long period, high labor intensity and low instantaneous test value representativeness of onsite operation are solved, and the aims of acquiring the movable liquid surface in real time at low cost, coordinating supply and drainage relationships and improving the production efficiency of the oil well are fulfilled.

The invention discloses a device for measuring spatial motion with six degrees of freedom and a dynamic measuring method. A fixed platform (1) of the measuring device is provided with six Hooke hinges (2), and a moveable platform (10) is arranged above the fixed platform (1). The moveable platform (10) is provided with six ball hinges (9) which are respectively connected with the corresponding six Hooke hinges (2) through branched chains. A revolute joint (6) of each branched chain is provided with a spiral coder (5). The dynamic measuring method comprises the steps of establishing a coordinate system, measuring an angle-time curve of relative motion of upper and lower support rods of the revolute joint (6) by the spiral coders (5), so as to obtain the law of motion with the spatial six degrees of freedom of an object measured by a positive solution of the angle-time curve of the spiral coder (5) and the like. The device and the method not only measure the motion with the six degrees of freedom simultaneously, but also ensures the accuracy of measuring results, and have the characteristics of being good in flexible, strong in adaptation, wide in measuring range, high in accuracy and the like.

The invention relates to self-piercing riveting quality online detection system and method in the technical field of machining. The system comprises a weighing sensor, a displacement sensor, a weighing sensor amplifier, a displacement sensor amplifier, a data acquisition card and a calculation module. According to the invention, whether the joint quality is qualified or not is judged through acquiring the force-time and displacement-time curves in the self-piercing riveting process according to one feature window and three feature tolerance ranges on the acquired curves and the defect type to which qualified joints belong is also judged. The method gives consideration to the changes of the displacement and the force in the riveting process, has the characteristics of sensitivity to defects like plate gaps and the like, high defect detection speed and the like and can specifically detect various defects.

Methods and a system for a vehicle control system using a reference time profile including an upper control bound and a lower control bound are provided. The system includes an input device configured to receive a required time of arrival at a waypoint and a processor communicatively coupled to said input device wherein the processor is programmed to generate a reference time profile using a first speed profile up to an intermediate control point and a second speed profile between the intermediate control point and an RTA waypoint. The system also includes an output device communicatively coupled to the processor wherein the output device is configured to transmit a speed control signal based on the reference time profile to a vehicle speed control system.

For training adjustment in sports, particularly running sports, an apparatus and appertaining method are provided with which a simple, non-invasive and automatic determination of the lactate balance point is possible. The apparatus comprises a motorized treadmill for which a running speed can be predetermined by a control unit, whereby the control unit is connected to a pulse measurement device to supply a measurement value of the heart rate of a test person, and whereby the control unit comprises a module to determine the lactate balance point, this module being fashioned to successively increase the running speed in the training course, to register the time curve of the heart rate, and to determine the lactate balance point of the test person via evaluation of the dependency of the heart rate on the running speed.

The invention discloses a capacity optimization configuration method for a hybrid energy storage system orientating optimization operation of a power distribution network. The capacity optimization configuration method comprises the steps of obtaining imbalance power between the optimal output and photovoltaic actual output when an optical storage system participates in operation of the power distribution network firstly, taking the imbalance power as a hybrid energy storage reference power, adopting ensemble empirical mode decomposition to decompose the imbalance power into a series of intrinsic mode functions, and performing recursion Hilbert conversion to obtain an instantaneous frequency-time curve of each intrinsic mode function separately; according to power type and energy type energy storage characteristics, determining crossover frequency by taking least aliasing of the instantaneous frequency-time curves as a principle, and stabilizing the high-frequency components and low-frequency components of the imbalance power by adopting power type energy storage and energy type energy storage respectively; and finally, by considering charging-discharging efficiency, state of charge and life cycle cost, a power type and energy type energy storage rate power and rate capacity economic optimal configuration scheme is proposed. Compared with a conventional method, new energy output can be compensated, consumption capability to new energy can be improved, and active participation to the optimization operation of the power distribution network can be realized.

Methods and a system for vehicle control are provided. The system includes an input device configured to receive a required time of arrival at a waypoint and a processor communicatively coupled to the input device. The processor is programmed to determine a forward late time profile, determine a forward early time profile representing the earliest time the vehicle could arrive at a point along the track and still arrive at the waypoint while transiting at a maximum available speed, and determine an estimated time uncertainty (ETU) associated with at least one of the forward late time profile and the forward early time profile. The system also includes an output device communicatively coupled to the processor, the output device configured to transmit the determined uncertainty with a respective one of the at least one of the forward late time profile and the forward early time profile to a display

The invention provides a method for measuring thickness or defect depth by a pulse infrared thermal wave technology, comprising the following steps of (1) heating an object to be measured by pulse heating equipment; obtaining a thermographic sequence on the surface of the object to be measured by an infrared thermal imaging device; memorizing the thermographic sequence in a general memory; (2) multiplying a temperature-time curve of each point in the thermaographic sequence with corresponding time, thus obtaining a new curve f; (3) working out first-order differential on the f; and obtaining a peak time tapst; (4) working out L by a formula, wherein Alpha is thermal diffusion coefficient and L is the thickness or the defect depth of the object to be measured. By adopting the technical scheme, the thickness or detect depth of a part to be measured can be measured, a reference curve is not needed, and only one-order differential treatment is needed for the measurement, so that the processing method is simpler.

The invention provides a method of determining long-term strength in rock creep tests, and relates to the technical field of rock mechanics. The method includes coring field rock samples; processing rock cores to form test pieces; mounting and adjusting axial and radial displacement sensors for the test pieces; applying axial and radial load to the test pieces until the text pieces are destroyed;acquiring test data, and converting and outputting the test dada; plotting axial and radial creep curves of the test pieces; computing creep Poisson ratios at various moments; determining the long-term strength of rock. The method for determining the long-term strength in the rock creep tests has the advantages that influence of axial and radial deformation in the rock creep procedures on the performance of the rock is comprehensively considered according to actual ductile dilation deformation of the rock, the creep time is segmented, creep Poisson ratio -time curves are plotted, the long-termstrength of the rock is determined according to stress corresponding to data of inflection points of the curves, accordingly, the timeliness of the rock can be effectively reflected by the solved long-term strength, subjective judgment can be eliminated, and the method is simple and reliable, is high in accuracy and is easy to popularize and apply to actual rock engineering.