1796results about How to "Real-time measurement" patented technology

An actively controlled rotary steerable drilling system for directional drilling of wells having a tool collar rotated by a drill string during well drilling. A bit shaft has an upper portion within the tool collar and a lower end extending from the collar and supporting a drill bit. The bit shaft is omni-directionally pivotally supported intermediate its upper and lower ends by a universal joint within the collar and is rotatably driven by the collar. To achieve controlled steering of the rotating drill bit, orientation of the bit shaft relative to the tool collar is sensed and the bit shaft is maintained geostationary and selectively axially inclined relative to the tool collar during drill string rotation by rotating it about the universal joint by an offsetting mandrel that is rotated counter to collar rotation and at the same frequency of rotation. An electric motor provides rotation to the offsetting mandrel with respect to the tool collar and is servo-controlled by signal input from position sensing elements such as magnetometers, gyroscopic sensors, and accelerometers which provide real time position signals to the motor control. In addition, when necessary, a brake is used to maintain the offsetting mandrel and the bit shaft axis geostationary. Alternatively, a turbine is connected to the offsetting mandrel to provide rotation to the offsetting mandrel with respect to the tool collar and a brake is used to servo-control the turbine by signal input from position sensors.

A distributed fiber sensor based on spontaneous Brillouin scattering uses a single-frequency fiber laser as a source and a cw Brillouin fiber ring laser as an OLO to optically shift the frequency of the OLO to set the Brillouin/OLO beat frequency within the bandwidth of a conventional heterodyne receiver. The distributed fiber sensor is capable of real-time measurement of both temperature and strain.

A system and method for enhancing and displaying a target object, that generally comprises: a processor that demodulates the rate of movement of the target object to produce a demodulated signal; computes the power of the demodulated signal; creates an image sequence, based on the power of the demodulated signal, that comprises the enhanced periodic motion pixels; and forms an image sequence of the enhanced periodic motion pixels to form an image display of at least the target object; and an image display device to display the target object.

The invention provides an exercise monitoring and management system applied to diabetes rehabilitation, which is capable of obtaining physiological parameters and environmental parameters of a diabetic in an exercise process in real time and carrying out real-time processing and feedback on the data. The exercise monitoring and management system comprises front-end monitoring equipment used for obtaining the physiological parameters and the environmental parameters of the diabetic in the exercise process in real time, and then uploading the data to a mobile phone client through a Bluetooth module with low power consumption, wherein the mobile phone client is capable of locally storing and initially processing the data, displaying a result on an interactive interface and transmitting the monitoring information to a remote health management system in real time through a mobile communication network; the health management system is capable of comprehensively analyzing based on an exercise management theory of the diabetes and feeding an analysis result back to a doctor and a patient, so that danger caused by the excessive exercise during exercise is avoided, and the exercise rehabilitation condition of the patient can be conveniently monitored and counted for a long time.

The invention discloses a tool setting device and a tool setting method for a micro lathe and belongs the technical field of mechanical automation. The device comprises a machine tool clamp plate, a tool rest, a tool, a guide rail, a first charge coupled device (CCD), a reflector, a first light source, a second CCD, a second light source and an outer computer. The method comprises the following steps of: calibrating pixels in the horizontal direction and pixels in the vertical direction respectively, and transmitting images containing actual distance information to the outer computer; monitoring and adjusting the tool to ensure that the tool approaches an end surface of a workpiece; displaying the distance between a tool nose and the rotary center of the end surface of the workpiece by a technology and software; manually adjusting the distance between the workpiece and the tool according to the obtained distances in the three directions, or controlling the relative motion of the tool and the workpiece by outputting corresponding signals through the computer so as to realize high-precision tool setting of the micro lathe. According to the device and the method, an image measurement technology is adopted, so that tool setting gaps can be automatically detected and can be measured in real time; and therefore, the tool setting difficulty is reduced, and the machining process can be well monitored.

A multifunctional optical micro-manipulation device comprises a femtosecond laser, an optical tweezers laser, an optical system, a stage, a light source system, an imaging system, a spectral measurement system and a computer, wherein the optical system comprises a shutter, an attenuator, a focusing lens, a near IR reflector and a microscopic objective lens; the light source system comprises an illumination light source and a condenser lens; the microscopic objective lens is arranged on the stage for condensing a laser beam emitted by a laser generator onto a sample; the condenser lens is arranged below the stage for condensing a visible light emitted by the illumination light source onto the sample; and the imaging system includes an IR filter and CCD camera sequentially disposed on the projection light path of the near IR reflector. By integrating three functions of laser tweezers, femtosecond laser scissors and microspectrometer in one system, the invention can overcome the singleness and the disadvantages of the prior laser micro-beam technology and can be widely used for studying in biological, medical, biophysical, material chemistry and nano-technology fields.

In assessing the capability of an IP based network to support toll telephony service, objective measurements of Speech Quality are taken. A module is used with Voice over Packet equipment that allows performance of voice quality measurements in real-time without using any external test equipment. A reference signal that includes a marker and a voice test signal is sent through the network from one Voice over Packet equipment containing or connected to the module to another. The received marker is compared to the reference marker to identify the onset time of the received voice test signal. The received and reference voice test signals are processed to measure the quality of the network. This may be implemented using the processing power and memory resources present in Voice over Packet equipment giving the network administrator an enhanced test capability at each node of the network. Voice quality measurements may be generated in a transparent way for the callers in real-time under severely degraded conditions of the network.

The invention discloses a high-speed electric main shaft dynamic rigidity test device which comprises a base, a loading system and an automatic control unit, wherein the loading system comprises an axial loading system, a radial loading system and a test rod fixedly arranged on a high-speed electric main shaft; the excircle of the test rod is provided with a radial rolling bearing, and the loading end part of the test rod is provided with a plane rolling bearing; and the radial loading system and the axial loading system respectively load the test rod by the radial rolling bearing and the plane rolling bearing. The invention combines the high-speed rotation and static loading of the main shaft by the rolling bearing structure and acquires a loading value and a deforming value by a pressure sensor and a displacement sensor, and the control unit controls loading pressure according to the change of the loading value and the deforming value, thereby preventing the influence on test precision caused by friction heat generation and mechanical abrasion generated by mechanical contact when the high-speed electric main shaft is directly loaded in a state of high-speed running, realizing continuous and stable dynamic loading and real-time measurement of the high-speed electric main shaft and having high measurement precision.

The invention provides a parcel volume measuring method and system, a storage medium and a mobile terminal. The method comprises the following steps that S100, a target image is obtained through a camera of the mobile terminal, wherein the target image comprises a plane marker, an upper surface of a to-be-measured parcel with the plane marker, and two side surfaces of the to-be-measured parcel adjacent to the upper surface; S200, image processing is conducted on the target image, so that the plane marker is recognized in the target image; S300, image edge detection is carried out on the targetimage, so that the angle points of the to-be-measured parcel are identified in the target image; S400, the world coordinates of the angular points are calculated based on the plane marker, the pre-obtained internal reference matrix and the angle points of the camera, so that the volume of the to-be-measured parcel is obtained according to the world coordinates of the angular points. According tothe invention, the volume of the parcel to be measured is accurately measured by using the camera built in the mobile terminal in a real-time manner; the use scene is enriched, additional hardware facilities do not need to be added, and the cost is saved.

The invention relates to a system and a method for automatically measuring dimension and weight of a road vehicle, in particular to an integrated system and an integrated method for rapidly and dynamically measuring the length, width, height and weight of a vehicle, and aims at effectively solving the problems in overloading detection work at present. According to the system, the dimension information of the vehicle is measured in a front and back portal frames manner; the width and height information of the vehicle in a single lane is measured by combination of two two-dimensional laser radars on the front portal frame, so that the measurement problem caused by vehicle deformation can be effectively avoided; and the length information of the vehicle in the single lane is indirectly measured by virtue of a single laser radar on the rear portal frame; and starting and stopping information of the single vehicle is provided for a shaft-type weighing scale by virtue of a laser radar separation vehicle on the front portal frame. The system has the advantages of high measurement speed and high accuracy, and normal running of the vehicle is not affected.

The invention relates to a far-field parameter calibration device and a far-field parameter calibration method for an antenna. The calibration device comprises a receiver, a computer, a microwave anechoic chamber, a receiving antenna, a turntable, a transmission antenna, a bracket and a signal generator, and is characterized in that the receiving antenna, the turntable, the transmission antenna and the bracket are arranged in the microwave anechoic chamber; the receiving antenna is arranged on the turntable, and is arranged on the spatial longitudinal axis of the anechoic chamber; the transmission antenna is arranged on the bracket, and is arranged on the spatial longitudinal axis of the anechoic chamber; the receiver is in communication connection with the computer; the signal output end of the computer is connected with the turntable and the signal input end of the signal generator respectively; the signal output end of the signal generator is connected with the signal input end of the transmission antenna; and the signal output end of the receiving antenna is connected with the signal input end of the receiver. According to the device and the method, electrical performance parameters of the antenna can be measured accurately, quickly and efficiently in real time. The device and the method are high in applicability and wide in frequency calibration range, and the measurement synthesis uncertainty can reach 0.21 to 0.49dB.

The invention relates to non-linear optical frequency conversion and the application of the non-linear optical frequency conversion and provides a method and a device which can widen the preparation requirements for a biological sample, do not need preparation of the sample, are high in measurement sensitivity, and can achieve high resolution, fast and real-time biological sample moisture content and distribution imaging measurement. The technical scheme is that the biological tissue moisture measurement device based on terahertz wave attenuated total reflectance (ATR) is composed of a tunable terahertz (THz) radiation source, a non-spherical face lens assembly, a total reflection prism, a two-dimensional mobile scanning platform, a terahertz wave detector and a computer. The total reflection prism is placed in the middle of the non-spherical face lens assembly, the face to be tested of a biological sample to be tested clings to the top face of the total reflection prism fixed on the two-dimensional mobile scanning platform, terahertz (THz) waves are projected to the terahertz detector through the non-spherical face lens assembly, and a detection result of the terahertz detector is output to the computer. The biological tissue moisture measurement device and the method based on the terahertz wave attenuated total reflectance (ATR) are mainly used for biological sample moisture content and distribution imaging measurement.

The invention discloses a plate clamper platform for a falling weight impact test, and an impact speed measurement method. The plate clamper platform comprises a clamper structure, a supporting lifting structure and a laser sensor, wherein the clamper structure comprises a plate clamping device, a multi-angle rotation device and a clamper bottom plate, the multi-angle rotation device comprises wall plates, wall plate bolts and a bottom plate bolt, each wall plate is provided with a central hole and two arc-shaped grooves, the two arc-shaped grooves are symmetrically arranged relative to the central hole, clamping plates can rotate along the arc-shaped grooves after the wall plate bolts are completely loosened, the supporting lifting structure comprises a platform and a lifting driving device, the clamper bottom plate can rotate by adopting the bottom plate bolt as the center and can slidably move along a straight strip hole, and the laser sensor is arranged below the weight tray positioned on the periphery of a hammer head. With the plate clamper platform and the impact speed measurement method of the present invention, the composite material plate specimen can be tightly clamped, the multi-angle impact on the specimen can be achieved, and the speed change during the drop hammer falling and impact process can be real-timely measured.

Methods and devices for measuring elongation, wear, and internal temperature of a conveyor belt to catch signs of conveyor belt failure such as breakage by detecting a magnetic field from a magnetic body by using a magnesium sensor, as well as a rubber magnet sheet as a magnetic body and a method of producing the sheet, the rubber magnet sheet being able to be used while it is embedded in the conveyor belt. To measure elongation of a running conveyor belt ( 11 ), a magnetic field of a magnetic body ( 2 ) embedded in the belt ( 11 ) is detected by a magnetism sensor ( 3 ) fixed to the earth, and elongation of the belt ( 11 ) is calculated from temporal variation of the detected magnetic field.

The invention relates to a method for monitoring thermal efficiency and coal quality data of a pulverized coal fired boiler in real time. A digital model for monitoring the thermal efficiency of a pulverized coal fired boiler system in real time is established to obtain an excess air coefficient, theoretical air volume of a fuel, theoretical nitrogen volume of a combustion product, flue gas carbon dioxide, carbon monoxide, sulfur dioxide, dry flue gas volume, volume difference between theoretical oxygen demand of full coal combustion and practical combustion oxygen consumption, mass percentage of coal as received basis machinery unburned carbon, mass percentage of coal generated carbon dioxide as received basis carbon, mass percentage of coal generated carbon monoxide as received basis carbon, mass percentage of coal as received basis; densities of carbon, hydrogen, oxygen, nitrogen, sulfur, ash, water and flue gas, flow speed of flue gas in air preheater, lower heating value of coal,heat loss due to exhaust smoke, heat loss due to chemical incomplete combustion, heat loss due to mechanical incomplete combustion, radiating heat loss, ash residue physic heat loss, boiler thermal efficiency, mass percentage of carbon in fly ash and coal combustion. The method has the characteristics that: the method is scientific and reasonable, monitors data correctly, and the like.

The invention provides a wind speed and direction real-time measuring method and a device of a high-altitude sky-parking aircraft. The method is composed of a measuring device and a wind speed and direction extraction algorithm, wherein, the measuring device is a rigid rotary rod which is driven by a brushless motor and rotates at a constant angular speed, two ends of the rigid rotary rod are provided with pressure measuring probes which are connected to a differential pressure transducer. When wind blows to the rigid rotary rod which constantly rotates, the pressure difference between the two pressure measuring probes is a periodic cosine signal, and the amplitude of the signal is in direct proportion to the wind speed, and the phase position of the signal contains wind angle information. By adopting the extraction algorithm of the invention, wind speed and direction information can be extracted from the differential pressure signal. The invention is characterized in that the amplitude of the differential pressure signal is in direct proportion to the product of atmospheric density and the linear speed of a rotary arm at the predetermined wind speed. Thus, in the invention, larger signal amount can be obtained under lower atmospheric density by reasonably selecting the rotating speed of the rigid rotary rod and the length of the rotary arm so as to reliably extract the wind speed and direction information.

The invention provides a method for measuring alkali metal atomic polarizability of a nuclear magnetic resonance gyro in real time and belongs to the field of atomic physics. The method includes: measuring alkali metal atomic densities of an atomic pool at different temperatures, measuring atomic nuclear magnetic resonance frequency of inert gas caused by polarization of alkali metal atoms, and thus acquiring polarizability of the alkali metal atoms in the atomic pool without changing the optical path structure of the nuclear magnetic resonance gyro and the magnetic field environment; building a three-dimensional model of changes in nuclear magnetic resonance frequency of the inert gas in the atomic pool along with temperature and the alkali metal atomic polarizability, measuring the frequency shift of atomic NMR (nuclear magnetic resonance) of the inert gas at any temperature point while the nuclear magnetic resonance frequency normally runs, and thus calculating the polarizability of the alkali metal atoms in the atomic pool in real time. The method has the advantages that the method is simple, no influence is caused to the optical path structure of the nuclear magnetic resonance gyro and the method is of great significance to improving the performance of the nuclear magnetic resonance gyro.

An ammonia nitrogen concentration soft-measuring method based on a fuzzy neural network belongs to both the field of control and the field of water treatment. Aiming at the problems that currently, effluent ammonia nitrogen concentration is difficult to measure in real time in the sewage treatment process and an effluent ammonia nitrogen concentration real-time detection method urgently needs to be researched to promote the automation level of an urban sewage treatment plant, the ammonia nitrogen concentration soft-measuring method is based on biochemical reaction characteristics of urban sewage treatment, adopts the fuzzy neural network based on a fast quadratic learning algorithm to build an ammonia nitrogen concentration soft-measuring model, and solves the problem of difficulty in real-time measurement on the effluent ammonia nitrogen concentration. The result shows that the soft-measuring model can rapidly and accurately predict concentration of the effluent ammonia nitrogen in the sewage treatment, is beneficial for promoting the quality monitoring level of the concentration of the effluent ammonia nitrogen in the sewage treatment process and ensures high-efficiency and stable operation of the urban sewage treatment plant.

The invention discloses a mountain torrent disaster on-line monitoring and identification early warning method. The method includes the following steps that: a data acquisition subsystem acquires data at a site: an automatic rainfall monitoring station acquires and processes disaster field rainfall information and transmits the information to the system platform of an early warning index analysis model through a wireless mode and/or a wired transmission mode, a water level and/or mud level monitoring station acquires and processes field debris flow and water level information and transmits the information to the system platform of the early warning index analysis model through a wireless mode and/or a wired transmission mode, and a video monitoring station acquires and processes disaster field image information and transmits the information to the system platform of the early warning index analysis model through a wireless mode and/or a wired transmission mode; an identification early warning subsystem performs early warning judgment and issues internal early warnings; personnel are determined, and formal early warnings are issued; real-time monitoring is performed; and information query is performed. The method has the advantages of rapid identification and predictive early warning, and can assist in avoiding loss. The invention also discloses an early warning system using the mountain torrent disaster on-line monitoring and identification early warning method.