51results about How to "Applicable to online detection" patented technology

The invention discloses a device used for quick online nondestructive detection on cracks of poultry eggs on the basis of acoustic characteristic and a method thereof; the poultry egg is arranged on a supporting idler wheel; a stepping motor is connected with the supporting idler wheel and drives the supporting idler wheel; a microphone which is arranged beside the poultry egg is sequentially connected with a computer by a signal amplifier, a filter and an A/D converter; when the poultry egg rolls on a chain, different parts of the poultry egg are mechanically knocked at multi-point by a knocking rod; sound signals collected by the microphone are amplified by the signal amplifier, filtrated by the filter and converted by the A/D converter and subsequently input to the computer, thus comprehensively judging the cracking situation of the poultry eggs. The device and the method can adapt to poultry eggs with different types and different sizes, realize the classification and automatic detection of the poultry eggs during the production processing and circulation process, and can be popularized and applied to the nondestructive detection on the hardness and the maturity of agricultural products such as fruits, vegetables, and the like.

The invention relates to an on-line double-sided automatic thickness measuring device of organic glass, which mainly comprises a control system, a machine frame, a support frame, a detection frame, a cross beam, a cross beam regulator, a feeding distance measuring device and a plurality of thickness measuring devices, wherein the upper end of the machine frame is fixedly connected with the detection frame, the cross beam is connected onto the upper edge frame of the detection frame through the cross beam regulator, the inside of the detection frame is fixedly connected with the support frame, a plurality of support guide shafts are arranged on the support frame, a feeding speed measuring device is arranged at one end of any support guide shaft for measuring the feeding distance of an organic glass plate, the thickness measuring device comprises upper thickness measuring units and lower thickness measuring units, and a plurality of upper thickness measuring units and lower thickness measuring units are respectively and symmetrically arranged on the cross beam and the detection frame for detecting the thickness information of the front side and the back side of multi-point positions of the organic glass plate. Because the control system is used for processing and calculating the position information of entity space three-dimensional lattices of the organic glass in real time for confirming the dimension quality of the plates, the on-line double-sided automatic thickness measuring device has the advantage of simple and compact structure, and can be directly arranged at a production line for real-time measurement.

The invention discloses a method for measuring the fluidization parameter of a gas-solid fluidized bed. The method comprises the following steps of: 1) measuring an electrostatic signal in the gas-solid fluidized bed by use of an inductive electrostatic sensor, wherein the inductive electrostatic sensor is connected with a monitoring system; 2) analyzing the filtered electrostatic signal, and extracting the characteristic parameter; 3) associating the characteristic parameter of the electrostatic signal with the parameters such as particle concentration, speed, circulation time, particle clustering or flaking, fluidized state and the like, and establishing prediction models of the parameters respectively; and 4) detecting the parameters such as particle concentration, speed, circulation time, flaking/blocking and the like as well as the distribution and fluidized state thereof in the fluidized bed by use of the established prediction models. The method adopts a simple detection device, is safe and environmentally-friendly, has high accuracy, and is suitable for the online detection of the industrial production process.

The aim of the invention is to provide a flaw detection technology for carrying out comprehensive, rapid and automatic detection on a median plate or a thin plate by electromagnetic ultrasonic horizontal polarization shearing wave, a steel sheet automatic detection method for rapidly and effectively detecting various disadvantages through an electromagnetic ultrasonic SH wave technology and a device thereof. The device consists of an electromagnetic ultrasonic detection unit and a circuit system. The method adopts SH wave to detect the median plate and the thin plate, is sensitive to the disadvantages of the surface and the inside of the steel plate, receives a pure signal and can effectively detect various disadvantages of the steel plate. As the SH wave has small attenuation during transmission, the SH wave has long detection distance, can realize the comprehensive detection of the steel plate with fewer probes and greatly improve the detection efficiency. The method combines an ultrasonic transmission method and a reflection method, can detect various disadvantages of the steel plate, can judge the shapes and positions of the disadvantages, and has high confidence level of a detection result.

The invention belongs to the technical field of film nondestructive detection, and relates to a method for detecting the adhesiveness of a film based on a surface wave. The method comprises the following steps of: constructing a spring hypothetical model representing the adhesive characteristic of a film; establishing a particle displacement expression of the surface wave; substituting a boundary condition of the surface wave spread in a film/base structure into the surface wave particle displacement expression so as to obtain an equation group composed of 6 equations, namely B6*6C6*1=0; causing determinant of a coefficient matrix B6*6 to be zero, and taking KN and KT as parameters influencing a chromatic dispersion curve, so as to obtain the chromatic dispersion curve of the surface wave; exciting the surface wave on the surface of a sample sheet to be detected; collecting surface wave signals from two different positions close to the surface of the sample sheet to be detected; analyzing and processing the surface wave signals, so as to obtain an experimental chromatic dispersion curve of the surface wave; matching the curve with the obtained surface wave dispersion curve, so as to obtain a normal elastic coefficient KN on the surface of the sample sheet to be detected; and determining the adhesiveness between the thin film and the base according to the KN. The detection method provided by the invention can be used for fast and accurately detecting the adhesiveness between the film and the base without loss.

The invention discloses a method and a system for detecting the mass flow rate of particles in a pneumatic conveying process, and the mass flow rate of materials conveyed in a pipeline is accurately detected through a series of treatment by collecting sound wave signals generated by the action of fluid particles in the pipeline and the wall surface of the pipeline in a non-invasive manner. The sound wave detection adopted by the invention is a non-invasive detection method, and the detection device is simple, safe, environment-friendly and suitable for online detection in the industrial production process. By adopting an acoustic sensor array, through data fusion of multiple sensors, particle flow forms, concentrations and speed distribution under different conveying flow patterns can be effectively associated with the conveying mass flow rate, so that the mass flow rate of conveyed particles can be accurately detected under different conveying conditions (different conveying flow patterns, different conveying pipelines and different conveying materials). Compared with an existing mass flow rate detection technology, the method is more sensitive, accurate and wider in application range.

The invention discloses an integrated chip crack detection device and method. The device comprises: a control unit connected to each other, an induction unit, and an excitation unit. Under the instruction of the control unit, the excitation unit generates a linear laser beam, and the linear laser beam To the surface of the semiconductor chip, scan horizontally and vertically on the surface of the semiconductor chip, and at the same time, the linear laser beam generates a thermal wave at the desired excitation line, and the thermal response of the thermal wave is captured by the sensing unit, and the thermal response data is then transmitted to the control unit. The invention realizes non-contact, non-damage and non-intrusion detection and identification of cracks on the surface of the integrated chip; it is not limited by the chip material, has high detection efficiency, and is suitable for online detection; and improves the ability of crack detection and the reliability and safety of the integrated chip sex.

The invention provides a method for calculating a pose of a thread-containing target object based on point cloud data. Th method comprises the following steps that 1) the plane where the thread-containing target object intersects with the other object when fixing is recorded as a first plane, and point cloud data are acquired; and a plane equation of the first plane is fitted to obtain a normal vector; 2) a plurality of plane Ci perpendicular to the first plane is made, the thread point cloud data falling on the same plane Ci are selected as a straight line fitting to obtain a straight line Li; 3) a plurality of parallel plane Pj of the first plane is made in the thread point cloud data distribution area; 4) the intersection point of the straight line Li and the plane Pj is selected, a point fitting ellipse in the same plane is used for obtaining center point coordinates; and 5) carrying out linear fitting on the coordinates of a plurality of center points, then the included angle between the axis L and the specific plane is obtained, and the included angle between the thread-containing target object and the specific plane is obtained. According to the method, the pose data of thethread-containing target object can be calculated after the point cloud data of the thread-contained target object is obtained, the method is accurate and practical, and is suitable for on-line detecting.

The invention discloses a printing paper air-suction flattening device. The printing paper air-suction flattening device comprises an air-suction plate and an air-suction fan set. The air-suction plate is arranged on the periphery of a paper conveying roller, and one face, corresponding to the paper conveying roller, of the air-suction plate is an arc face matched with the paper conveying roller. A gap which allows paper to pass through is reserved between the air-suction plate and the paper conveying roller. The air-suction fan set is composed of a plurality of air-suction fans which are arranged on the backside of the air-suction plate. Air-suction holes which correspond to the air-suction fans are formed in the arc surface of the air-suction plate. Compared with the prior art, the printing paper air-suction flattening device does not need to make simultaneous contact with the two sides of the paper, guarantees that the quality of the printing paper is not influenced, and is suitable for online inspection; in addition, the printing paper air-suction flattening device is provided with a unique mechanical structure, flattens the printing paper before an inspection point, enables the paper to fit in with an ideal path line all the time when the paper passes through the inspection point and avoids deformation of an image. Meanwhile, a paper strip upper supporting device and a paper strip lower supporting device ensure that a printing product moves according to a path of a chain way in other areas besides the air-suction plate, and therefore the effect of flattening of the printing paper is further ensured.

The invention relates to a fast detection method for soluble COD in polyether production waste water. According to the invention, ultraviolet spectrum fingerprint characteristics of polyether waste water are analyzed, the characteristic spectrum of polyether is found out by combining statistical analysis, and a linear relationship is established with the soluble COD. The fast detection method realizes fast detection for the soluble COD in the polyether waste water. Compared with the conventional COD detection method, the fast detection method can greatly reduce the time cost of COD detection.Meanwhile, the fast detection method can greatly save the cost of COD testing agents, can eliminate the environmental pollution caused by COD detection, and has extremely high economic and environmental benefits.

The invention is a kind of optical scanning external diameter measuring system which hasn't the scanning object lens and the measuring method. The system is made up of two or more optical scanning units without scanning object lens, each unit is assembled with any angle, each unit is made up by connecting light source, collimating mirror, scanning rotary mirror, the receiving object lens, photoelectric receiver. The photoelectric receiver connects with computer through wires. The method uses any two units as a group, the distance between the scanning mirror and the reflection centre point is l0, the offset centre angle to light of the measured object are 2theta 1 and 2 theta 2, the line between the object gravity center and the scanning mirror reflection centre point are alpha 1, alpha 2, the diameter is d: d= dkl0 according to following method, k= 1/(cos alpha 1/ sin theta 1 + cos alpha 2/ sin theta 2). The invention has no object lens, the producing is easy, it realiezes the computer digit compensate for system difference, the stability is good, it has high reliability, the assemble and maintaining is easy, the cost is low.

The invention belongs to a data acquisition device in an urge protection device and relates to an emergent protection circuit device for limiting over-current or over-voltage so that a circuit is not switched off. The data acquisition device comprises a data acquisition circuit part, a data buffering circuit part, a single chip microcomputer and a service life display circuit part, wherein the data acquisition circuit part mainly comprises an interface inserting needle, a chip AD8138 and a chip AD9238; the data buffering circuit part mainly comprises an FIFO (First-In First-Out) register and two latches; the service life display circuit part mainly comprises a light emitting diode and a resistor; and a service life display program and a data acquisition processing program are stored in the single chip microcomputer. By virtue of the device, the problem that the data acquisition device and an online monitoring device, which specially aim at an SPD, are lacked in the prior art is solved; and meanwhile, the defect that the cost of control chips taking a digital signal processor (DSP) and a field programmable gate array (FPGA) as cores is relatively high is overcome.

The invention discloses a torque detection table. The torque detection table comprises a box body, wherein a top plate of the box body is a guide plate, one of side plates is an installation plate, atorque and rotational speed sensor is fixedly arranged at an inner side of the installation plate, an input shaft of the torque and rotational speed sensor is connected with a guide shaft by a coupler, the guide shaft upwards penetrates out of a penetrating hole in the guide plate and is connected with an output end of a to-be-detected product, a gear fixedly sleeves an output shaft of the torqueand rotational speed sensor, a guide rail is arranged at an inner side of the installation plate, a rack is arranged in a guide groove in an inner side of the guide rail in a sliding way and is engaged with the gear, a threaded hole is formed in one of baffle plates, an adjustment bolt is arranged in the threaded hole of the baffle plate, the other end of the adjustment bolt is arranged in the guide groove, a compression spring sleeves the other end of the adjustment bolt, a working end of the compression spring props against the rack, and the adjustment of a pre-tightening force of the compression spring is achieved by rotating the adjustment bolt. Compared with the prior art, the torque detection table has the following advantages that batch and on-line detection on torque of parts in mass production is achieved.

The invention discloses a residue detection method of sodium tetradecyl sulfate. The method comprises the following steps: (1) preparation of a to-be-tested sample: sampling from cleaned equipment in contact with the sodium tetradecyl sulfate, so as to prepare the to-be-tested sample; (2) detection of the sample: detecting the to-be-tested sample obtained in step (1) with a TOC (total organic carbon) determination method. The detection method disclosed by the invention is fast and convenient, the analytical testing time and the waiting time of production are shortened, and the detection method also has the important significance in the maintenance aspect of a cleaning validation state.

The invention discloses a rolling type online egg crack detecting device on the basis of parallel piezoelectric film arrays. The rolling type online egg crack detecting device is characterized in that egg pushing mechanisms are equidistantly arranged on a conveying chain, and eggs are clamped between the adjacent egg pushing mechanisms; two egg tracks which are parallel to the conveying chain are symmetrically arranged on two sides of the conveying chain and sequentially include a front-end track, a detection track and a rear-end track along the conveying direction, and the N parallel piezoelectric film arrays which are uniformly arrayed along the conveying direction are mounted on the detection track and pass a signal conditioning circuit and a data acquiring and processing system. The rolling type online egg crack detecting device has the advantages that egg crack can be detected in an online manner, signal excitation devices can be simplified, multiple points on the surfaces of the eggs can be continuously detected, the problem of misjudgment or missing detection or the like due to the fact that signal difference is caused by difference of knocking force and crack is not knocked can be solved, and the detection rate can be increased.

The invention discloses a switch cabinet partial discharge on-line monitoring system based on an FPGA module, and belongs to the technical field of partial discharge detection system application. Thesystem comprises a partial discharge detector, an ultrasonic sensor, a planar equiangular spiral antenna, a hardware circuit, an upper computer, an FPGA module and an I/O serial port. The FPGA moduleis respectively connected to a power supply module, the ultrasonic sensor, the planar equiangular spiral antenna and an ultrahigh frequency signal detection and hardware circuit, and is connected to the upper computer through an I/O serial port of the FPGA module, and the components are placed in the switch cabinet to monitor the discharge condition of each point on the switch cabinet in real time. The system can detect the specific position of discharge through ultrasonic waves and judge the intensity of discharge according to different phase-amplitude values, and protection is made as soon as possible.