40results about How to "No calibration required" patented technology

The invention provides a localizer for tracking and locating an object as well as a self-government ultrasonic locating system and a method using the localizer. The self-government ultrasonic locating system comprises label equipment and the localizer, wherein the label equipment is installed on a moving object, comprises an RF and ultrasonic emitter, and is used for emitting RF and ultrasonic signals; and the localizer is used for receiving the RF and ultrasonic signals emitted by the label equipment so as to locate and track the position of the object. The localizer comprises a plurality of blade modules; each blade module comprises a locating signal receiver for receiving locating signals from the label equipment; known structural topotaxy exists among the blade modules; and the locating signal detecting time of the locating signal receiver and the known structural topotaxy are subsequently used for calculating the position of the object. Compared with the prior art, the localizer has the characteristics of high precision, easy disposing, no need of calibration, low cost, easy coordination, and the like.

The invention relates to an on-line monitoring system and a monitoring method for distributed cable terminals, and belongs to the measurement field. The whole system is divided into three layers from top to bottom. The bottom layer is a target layer comprising wireless temperature sensors mounted on temperature measuring points, each sensor monitors the temperature of one monitored target and transmits data to the outside through wireless methods; the middle layer is a partition layer comprising a wireless communication gateway, switch cabinet or voltage intervals can be taken as targets by the wireless communication gateway to perform configuration as required on site; the collected measuring results can be transmitted by the wireless communication gateway through various channel methods ready on site; the top layer is a station layer comprising a central server for gathering monitoring centers; and data transmitted by the wireless communication gateways can be received by the central server through various channel methods ready on site, and are displayed, stored and analyzed by the central server, so that out-of-limit warning or accident pre-warning functions can be realized. The on-line monitoring system and the monitoring method for the distributed cable terminals can be widely applied to the equipment condition monitoring field of power systems.

The invention provides a nondestructive detection method and device for absorber absorption coefficient measurement and photoacoustic imaging simultaneously. The detection method comprises the steps that optical fibers are adopted to perform opto-acoustic excitation in a body through a tissue channel; upper and lower boundary opto-acoustic signals P1 and P2 and a time interval D of an absorber are obtained by utilizing a focusing-type ultrasonic transducer with a long focal region in a nondestructive mode; according to the absorption coefficient a of the absorber and the relation of opto-acoustic pressure amplitude ratio P2 / P1 of upper and lower boundaries of the absorber and thickness 1, the absorption coefficient a is inversed; an opto-acoustic image of the absorber is obtained while linear scanning of the transducer is combined. The detection device comprises an opto-acoustic excitation portion based on dispersing optical fibers, an electrical control mechanical scanning portion and an ultrasonic acquisition and processing portion based on the water-immersed focusing-type ultrasonic transducer with the long focal region. The detection method can achieve opto-acoustic excitation and opto-acoustic signal acquisition in a nondestructive mode, the influence of the energy flow rate relevant to wave length is overcome, result correction is not needed, and two-dimensional opto-acoustic imaging of the absorber can be performed simultaneously. The detection device is simple, easy, simple and convenient to operate and convenient to popularize clinically.

The invention provides a wavelength modulation optical fiber acoustic sensor which comprises a laser, an optical fiber FP (fabry-perot) interference cavity acoustic probe, a first photoelectric detector and a signal processing and controlling module, wherein a laser power supply provides driving current to the laser, and the wavelength of the laser can be continuously adjusted; laser emitted by the laser is reflected after entering the optical fiber FP interference cavity acoustic probe, and an optical signal is output; the first photoelectric detector is used for receiving the optical signal output by the optical fiber FP interference cavity acoustic probe; the signal processing and controlling module is used for determining the optimal working wavelength of the wavelength modulation optical fiber acoustic sensor according to a direct current component of the output signal of the first photoelectric detector, and regulating the output wavelength of the laser to be the optimal working wavelength of the wavelength modulation optical fiber acoustic sensor by controlling the laser power supply to apply a driving current value corresponding to the optimal working wavelength to the laser. When the wavelength modulation optical fiber acoustic sensor is used, the optimal working wavelength is automatically selected without manual operation and calibration, so that the wavelength modulation optical fiber acoustic sensor is convenient to use and high in environmental adaptability.

The invention provides a downhole formation porosity determination method. The method comprises the steps that the rock framework longitudinal wave slowness at the downhole set depth is determined according to the formation mineral volume content; the formation longitudinal wave slowness and formation transverse wave slowness at the downhole set depth are extracted according to array acoustic wave logging data; the formation porosity at the downhole set depth is determined according to the rock framework longitudinal wave slowness, the formation longitudinal wave slowness and the formation transverse wave slowness at the downhole set depth. According to the downhole formation porosity determination method, the formation porosity value is determined by adopting both the formation longitudinal slowness and the formation transverse wave slowness, the downhhole formation porosity can be precisely obtained, the obtained formation porosity value does not need to be corrected, the utilization rate of the array acoustic wave logging data is increased, and the accuracy of the formation porosity value is improved.

The invention discloses a temperature sensor for the interior of an oil immersed transformer. The temperature sensor comprises an optical fiber, an optical fiber connector arranged at the first end of the optical fiber, a thermosensitive element packaged at the second end of the optical fiber, a first protective sleeve and a second protective sleeve. The outer periphery of the second end of the optical fiber is sleeved with the first protective sleeve, the other outer peripheries of the optical fiber are sleeved with the second protective sleeve, and the first protective sleeve is provided with multiple through holes which are through in the radial direction. The invention further discloses a manufacturing method of the temperature sensor for the interior of the oil immersed transformer. The temperature sensor is small in size, simple in structure and high in reliability, structural damage, precision reduction and other situations are avoided, the requirements that the temperature sensor is embedded into a winding or an iron core can be well met, and the temperature of the interior of the oil immersed transformer is convenient to monitor.

The invention provides a submerged-arc welding technology for 304L stainless steel thick plates. The submerged-arc welding technology comprises the steps that firstly, welding grooves are machined; secondly, preparation before welding is carried out; thirdly, welding is carried out, wherein a welding trolley is adopted for carrying out priming coat welding on the grooves in the front surfaces, andthen front surface submerged-arc welding is carried out after priming coat welding is completed; the two 304L stainless steel thick plates with the front surface submerged-arc welding completed are turned over, and then plasma carbon arc air gouging back chipping is carried out on the grooves in the back surfaces; and the welding trolley is adopted for carrying out back surface submerged-arc welding on the back surface grooves with back chipping completed; and fourthly, postweld treatment is carried out. According to the submerged-arc welding technology for the 304L stainless steel thick plates, according to the components and the performance of 304L stainless steel, the dimensions of the welding grooves and the welding technology are optimized, and welding materials are reasonably matched to ensure the quality of welded joints, defects such as shrinkage distortion, slag inclusion, air holes and bulky crystal particles are avoided, good mechanical performance at minus 20 DEG C is achieved, and good low temperature impact toughness is achieved especially.

The invention belongs to the technical field of quality analysis and particularly discloses a quality analysis method based on the restricted theory of relativity and a mass spectroscope. The method comprises the following steps of: introducing irons of an object to be measured into an iron source area; accelerating the irons to 3*105m / s or more by using an accelerating electric field; introducing the irons into a field-free flying area to freely fly; introducing the irons into an iron detector; and determining the static mass of the irons according to the flying time of the irons in the field-free flying area. The mass spectroscope based on the method comprises the iron source area, the accelerating electric field, a field-free drift tube and the iron detector, wherein the accelerating electric field consists of three or more pulsed high voltages; and the pulsed high voltages are provided by corresponding electrodes. Data measured by the method and the mass spectroscope is the real mass-to-charge ratio of the irons, so the mass is accurate and is not required to be corrected; the mass spectroscope is high in sensitivity and resolution; the quality detection up limit is only limited by the detector; and the mass spectroscope is high in analysis speed, does not require scanning and can realize full-spectrum analysis within tens of seconds.

The invention provides a transformer insulating oil moisture and hydrogen system detection device and a detection method thereof. The transformer insulating oil moisture and hydrogen system detectiondevice comprises an oil line system, a hydrogen detection module, a communication module and a system software module; the oil line system comprises a filter, a deaeration chamber, and an oil pump connected through pipeline in order; a liquid level controller is arranged in the deaeration chamber, a moisture sensor is arranged at the bottom, an electromagnetic valve is arranged between the filterand the deaeration chamber, and a second electromagnetic valve is arranged between the deaeration chamber and the oil pump; the hydrogen detection module comprises a deaeration chamber, an air pump and a hydrogen sensor connected in order through the pipeline; a third electromagnetic valve is arranged between the air pump and the hydrogen sensor, and a fourth electromagnetic vale is arranged at anoutlet of the hydrogen sensor; the oil line system and the hydrogen detection module are in signal connection with the system software module, the system software module and the communication moduleare in data transmission connection, and the communication module and the master station computer are in data transmission connection.

The invention discloses a flat panel detector for X-ray phase-contrast imaging and a use method of the flat panel detector. The flat panel detector for the X-ray phase-contrast imaging comprises a detector pixel layer, wherein a scintillator layer grows or is attached to the detector pixel layer; the scintillator layer is covered with a coded mask consistent with a detection pixel period; the coded mask is covered with a protecting layer. The flat panel detector for the X-ray phase-contrast imaging, disclosed by the invention, can be used for CBI phase-contrast imaging, and also can be used for effectively inhibiting scattering and reducing photon interference between every two adjacent pixels in conventional X-ray absorption-contrast imaging application, so that the image resolution is improved.

The invention relates to a reversible belt conveyor which is used for the technical field of conveyors. A machine frame is formed by connecting a machine frame head part, a machine frame middle part and a machine frame tail part. A walking wheel device is arranged at the lower portion of the machine frame. A spiral tensioning device is arranged on the machine frame tail part. A direction-change roller is connected into the spiral tensioning device. Lower carrier rollers are arranged in the machine frame middle part, and upper carrier rollers are arranged on the machine frame middle part. A speed reducer is fixed to the outer side of the machine frame head part and connected with a small chain wheel. A large chain wheel is arranged on the walking wheel device. The large chain wheel is connected with the small chain wheel through a roller chain. An electric roller is arranged on the machine frame head part. A conveying belt is connected with the electric roller and the direction-change roller. The upper part of the conveying belt is located on the upper faces of the upper carrier rollers, and the lower part of the conveying belt is located on the upper faces of the lower carrier rollers. The reversible belt conveyor is simple in structure, is used as the belt conveyor, has an emergency brake effect when blackout suddenly happens, and is easy and convenient to install, free of correction, safe and reliable, and it is avoided that materials slide down and damage the device.

The invention provides a water ions sensor which can realize high-precision measurement, no calibration requirement and remote monitoring. The water ions sensor has a positive electrode and a negative electrode, a transition metal is welded on each electrode, the other end of the transition metal is welded with a lead, the other end of the lead is connected to a conversion module, the conversion module is fixed with one end of two electrodes by a case, and an output end of the conversion module outputs the signals through the lead.

The invention discloses a steel heat treatment deformation treatment method aiming at easily deformable parts during a heat treatment process, such as a part manufactured from 25Cr2Ni4WA steel and the like. Before heat treatment, certain heat shrinkage deformation amount is reserved, such that the part is restored to an original size after heat treatment. Also, according to the method, with a direct air-cooling quenching method, the part does not deform or slightly deforms. Therefore, with the steel heat treatment deformation treatment method provided by the invention, a problem of severe deformation of a part prepared form easily deformable materials such as 25Cr2Ni4WA steel during the heat treatment process can be effectively solved.

The invention provides a high-strength specially-shaped welding-free pipe. The pipe comprises a closing face, a corresponding face and tension faces. Each of the tension faces is connected with the closing face and the corresponding face, so that a hollow cavity is formed. A displacement limiting section is arranged on a boss on the closing face, so that the structural stability is facilitated; the closing face and the corresponding face are planes or groove-shaped faces, so that the structural strength is better improved; tension grooves with reinforcing ribs are arranged, so that the strength of a section structure is improved, the stress of the position of the boss of the closing face is dispersed, and the situation that the specially-shaped pipe is twisted, deformed or broken after being stressed is prevented; and the closing face is provided with the boss of an engagement structure, so that no welding is needed. The high-strength specially-shaped welding-free pipe has the beneficial effects of being stable in structure, high in strength, free of welding, free of correction after being formed and high in production efficiency.

The invention relates to an electric automobile battery box upper cover. The electric automobile battery box upper cover comprises a box cover body, the box cover body comprises five surfaces including a top surface and four side wall surfaces connected with the top surface; four corners of the top surface are in R-angle transition and are top R-angle corners; the positions where the top surface are connected with the four side wall surfaces are in R-angle transition and are top straight-surface corners; and the positions where the four side wall surfaces are connected are in R-angle transition and are side wall R-angle corners. According to the electric automobile battery box upper cover, right-angled connection between the top cover and the side walls and right-angled connection betweenthe side walls are corrected into R-angle transition, due to structure change, a processing technology is adjusted, the process is changed into primary stretching from the original forming and welding, thus, the production efficiency of the product is improved, the product is stable, and the repair rate is low.

The invention discloses an all-fiber CARS spectrum detection device. The device at least comprises a femtosecond optical fiber laser 1, a Stokes optical path portion, a pump optical path portion, a conical excitation and collection optical fiber 13, a second optical fiber filter 15 and a fluorescence spectrum analyzer 16. Compared with the prior art, by using the optical fiber device of the invention, there are advantages of low loss, no calibration, no maintenance and easy integration. Therefore, the all-fiber CARS spectrum detection system can be miniaturized, integrated and flexibly configured, does not need to be regularly maintained by professionals, and is convenient to be used and popularized.

The present invention provides a confocal fundus imaging optical coherence tomography (OCT) system based on an optical fiber controller, including an OCT light source, an optical fiber coupler, an optical switch, a spectrometer, a computer, a control circuit, a photoelectric detector, a photoswitch, a reference arm and a sample arm; the OCT light source is connected with the optical fiber coupler,the optical fiber coupler is connected with the spectrometer through the optical switch, the spectrometer, the computer and the control circuit are connected in turn, the optical switch, the photoelectric detector and the computer are connected in turn, the optical fiber coupler is connected with the reference arm through the photoswitch, the optical fiber coupler is connected with the sample arm, and the control circuit is connected with the optical switch and the photoswitch. On the basis of OCT fundus imaging, existing optical devices are used to realize high-signal-to-noise-ratio and high-resolution fundus confocal imaging by adding a small number of devices, the cost is low, an optical fiber path is adopted, debugging and maintenance are facilitated, and the size of the system is greatly reduced.

The invention provides an optical fiber temperature and vibration series integrated sensor based on a blazed grating and an optical fiber grating. The sensor is used for solving the problems that in the prior art, a temperature and vibration integrated sensor is large in zero drift, needs regular maintenance and calibration and is poor in sampling precision. The sensor comprises a shell and a cable, wherein the shell is internally provided with the optical fiber grating and a blazed grating vibration measuring structure; one end of the cable extends into the shell and leads out a path of optical fiber, the optical fiber grating is engraved on the upper portion of the path of optical fiber, and the blazed grating vibration measuring structure is connected with the tail end of optical fiber.The sensor is small in size, simple in structure assembly, small in zero drift, high in electromagnetic interference resistance, free of electric noise, high in measurement precision and high in connection reliability.

The invention provides a segmented exposure imaging highly-dynamic recovery method and system. The method comprises the following steps: acquiring brightness values V1i of pixels at a segment end exposure moment T1 of a first exposure segment and brightness values Vi of pixels at a segment end exposure moment T of a second exposure segment, wherein the first exposure segment is earlier than the second exposure segment; calculating a slope value K of a current light intensity corresponding to each pixel point; according to the slope values K and a total exposure time T of the two exposure segment, calculating a current pixel bright value Vxi=K*T of each pixel point; and determining an overexposure comparison range according to an average overexposure value of the first exposure segment, andcarrying out comparative judgment and processing on each pixel brightness value V1i, so that a recovered highly-dynamic image is obtained. The segmented exposure imaging highly-dynamic recovery method and system provided by the invention has the advantages that fixed biases introduced by segmented exposure are eliminated while the highly-dynamic image is recovered, and no additional corrections are needed.

The invention provides a multifunctional confocal fundus imaging OCT system based on an optical fiber controller. The system comprises an OCT light source, a plurality of fundus imaging light sources,a first optical switch, a second optical switch, an optical fiber coupler, a spectrometer, a computer, a control circuit, a photoelectric detector, an optical switch, a reference arm and a sample arm, wherein the OCT light source and the fundus imaging light sources are connected with the optical fiber coupler through the first optical switch; the optical fiber coupler is connected with the spectrometer through the second optical switch; the spectrometer, the computer and the control circuit are sequentially connected; the second optical switch, the photodetector and the computer are sequentially connected; the optical fiber coupler is connected with the reference arm through the optical switch; the optical fiber coupler is connected with the sample arm; and the control circuit is connected with the first optical switch, the second optical switch and the optical switch. The multifunctional confocal fundus imaging OCT system has the advantages that on the basis of OCT fundus imaging, fundus confocal imaging with high signal-to-noise ratio and high resolution is realized by adding a small number of devices by using existing optical path devices, and low cost is achieved.

The invention relates to a welding method, in particular to a submerged arc stud welding method for an embedded part of a nuclear power plant, and belongs to the technical field of nuclear power equipment. The welding method comprises the following steps that the embedded part of which is 16-32 mm in reinforcement diameter is welded with a matched welding flux by adopting a reasonable welding process, an embedded part steel plate is made of ordinary carbon steel or low alloy steel, and the parameters of the welding process are that the welding time is 4-12 s, the reinforcement extension elongation is 7-13 mm, the reinforcement lifting height is 6-12 mm, the current polarity is a direct current reverse polarity, and the current is 800-1,700 A; and the welding flux comprises the following components in percent by weight: 25-35 percent of SiO2 and TiO2, 25-35 percent of MnO and Al2O3, 20-30 percent of CaO and MgO, 5-15 percent of CaF2 and FeO, less then or equal to 0.03 percent of S, and less than or equal to 0.04 percent of P. Through adoption of the welding method, the problems of slag inclusion and magnetic blow in conventional submerged arc stud welding are solved, so that the welding efficiency of the embedded part is about 5 times of the conventional manual welding efficiency, the welding quality is high, and a great deal of labor cost is reduced.

The invention discloses a probe compound for detecting spectrum temperature and a micro-capsule thermometer. The compound is a special triarylborane compound, and the probe compound can be taken as a micro-capsule thermometer, which can be used for real-time detection of temperature under different environments, especially for in-situ detection of static and dynamic temperature of micro-area and large-area. The micro-capsule fluorescence thermometer, which is prepared from the compound, has the advantages of rapid and convenient measurement of temperature, adaptability for various complex environments, furthermore, the two modes of spectrum identification and color scale identification can be selected individually, which is beneficial for the detection of spectrometer and the detection of colorimeter.

The invention relates to a braking system having a correction device (1) for correcting an opening time of a valve (103), which braking system comprises a signal input interface for a signal of a mostrecently input effective valve opening time (154), a signal input interface for a pressure (156) before the valve (103) after the most recently input effective valve opening time (154), a signal input interface for a pressure difference (125) between a pressure after the valve (103) before and after a current specification of the effective valve opening time (153), a valve opening time determination apparatus, which determines an effective reference system valve opening time (160) from the pressure difference (125) after the valve (103), the pressure (156) after the most recently input specification of the effective valve opening time (154) before the valve (103) and a parameter of the reference system (111) defining the pneumatic properties of a reference system (111), a correction timedetermination apparatus (127), which determines a correction time (162) as a difference between the most recently input effective valve opening time (154) and the effective reference system valve opening time (160), an addition apparatus (129), which adds up the correction times (162) after a current effective valve opening time (152) to form a summed correction time (164), and a signal output forthe summed correction time (164), by means of which summed correction time the current effective valve opening time (153) is corrected.

The invention discloses a steel heat treatment deformation treatment method aiming at easily deformable parts during a heat treatment process, such as a part manufactured from 25Cr2Ni4WA steel and the like. Before heat treatment, certain heat shrinkage deformation amount is reserved, such that the part is restored to an original size after heat treatment. Also, according to the method, with a direct air-cooling quenching method, the part does not deform or slightly deforms. Therefore, with the steel heat treatment deformation treatment method provided by the invention, a problem of severe deformation of a part prepared form easily deformable materials such as 25Cr2Ni4WA steel during the heat treatment process can be effectively solved.

The invention provides a processing technology of a valve seat, comprising the following steps: die forging blank, pre-heat treatment, semi-finishing, final heat treatment, surface sandblasting, finishing, the processing method and device design of the valve seat are reasonable, through Forging the blank to improve the material structure can effectively improve the mechanical properties of the material, reduce material costs and processing time. When processing the Ver seat, after the carburizing and quenching of the Ver seat, the traditional grinding process is abandoned to avoid grinding Grinding cracks appear, using turning instead of grinding, the surface roughness of the product can reach Ra0.4.

The invention relates to a simple work fixture used for machining parallel grooves of a sliding block. The simple work fixture comprises a convex positioning block, the sliding block to be machined, a first machine tool cushion block, a second machine tool cushion block, a first pressing plate and a second pressing plate, wherein the convex positioning block is arranged on a machine tool; the sliding block to be machined is arranged on the convex positioning block; the first machine tool cushion block and the second machine tool cushion block are symmetrically arranged at the left side and the right side of the convex positioning block respectively; the first pressing plate and the second pressing plate are arranged on the first machine tool cushion block and the second machine tool cushion block respectively and are used for pressing the sliding block to be machined. The convex positioning block is fixedly connected with the machine tool in the feed direction of the machine tool. The first pressing plate and the second pressing plate are oppositely arranged and fix the sliding block to be machined to the convex positioning block in a pressing mode. Compared with the prior art, the simple work fixture is simple and compact in structure, economical, practical and capable of achieving direct clamping without correction, so the subsidiary time is greatly shortened, operation is simplified, machining efficiency is improved, and the stability of machining quality is ensured.

Disclosed is a quick wiring construction method for the multi-core control cable that comprises the following steps: matching equipment needing to be connected with the control cable; performing corresponding matching on the wiring terminal function and the terminal number of the matched equipment to form a wiring scheme of a control cable core; determining the number of wire cores of the control cable needing to be connected according to a matching result; and setting each wire core of the control cable connected to the equipment room to be a unique color, so that the terminal number, the terminal function and the wire core color of the equipment are matched and corresponding after the control cable is connected. According to the quick wiring construction method for the multi-core control cable, the control cable with the unique color core is adopted, the wiring scheme is deepened before construction, the unified matching principle of the terminal, the terminal definition and the core color is determined, and then the number of the cores of the control cable and the core color matching requirement are determined; an operator only needs to perform matching wiring on the colored wire core and the terminal without wire checking, so that the wiring efficiency and accuracy can be greatly improved.

The invention provides a downhole formation porosity determination method. The method comprises the steps that the rock framework longitudinal wave slowness at the downhole set depth is determined according to the formation mineral volume content; the formation longitudinal wave slowness and formation transverse wave slowness at the downhole set depth are extracted according to array acoustic wave logging data; the formation porosity at the downhole set depth is determined according to the rock framework longitudinal wave slowness, the formation longitudinal wave slowness and the formation transverse wave slowness at the downhole set depth. According to the downhole formation porosity determination method, the formation porosity value is determined by adopting both the formation longitudinal slowness and the formation transverse wave slowness, the downhhole formation porosity can be precisely obtained, the obtained formation porosity value does not need to be corrected, the utilization rate of the array acoustic wave logging data is increased, and the accuracy of the formation porosity value is improved.