263results about How to "Easy to productize" patented technology

An optical fiber grating wave length demodulation system belongs to the technical field of optical fiber sensing and optical measurement. The demodulation system comprises a broad band light source (1), a tunable filter (2), a 1x2 coupler, a wave length calibration module, a photodetector, a 1xN optical switch (5) and a signal processing system. The inside connection of the wave length calibration module is that: one end of a standard tool filter (6) is connected with an output end of a third 1x2 coupler (11)m the other end of the standard tool filter is connected with a reference grating (10), an input end of the third 1x2 coupler is connected with an output end of a first 1x2 coupler; the other output end of the third 1x2 coupler is connected with a signal processing system (9) by a second photodetector (4) to implement the wave length calibration. The calibration of the reflected optical fiber grating wave length can be implemented rapidly and accurately by the standard tool filter and the reference grating, the signal can be effectively demodulated for high precision. The system also can be used for monitoring temperature and stress and so on physical quantities.

The invention belongs to the technical field of sensors, in particular to a microelectrode array chip sensor for electrochemical immunological detection. The invention uses silicon-based material to carry out manufacturing; and a chip integrates an electrochemical detected working electrode, an auxiliary electrode and a reference electrode, which has a good signal to noise ratio. The auxiliary electrode and the working electrode form a ring-disk structure, and the distance between the auxiliary electrode and the working electrode is small, thereby improving the sensitivity of the electrodes. The array distribution of a plurality of working electrodes can be used for multi-channel detection. The invention can be widely used for detection in various fields such as biological medicine and the like. The sensor is manufactured by using MEMS process, and has simple process and low cost.

The invention relates to a model-based urea emitting amount control method. The method includes the following steps that S1, according to the actual urea emitting amount, based on an SCRF model, a first ammonia storage value in an SCRF is calculated; S2, based on an SCR model, a second ammonia storage value in an SCR is calculated; S3, the first ammonia storage value obtained in the step S1 and the second ammonia storage value obtained in the step S2 are subject to weighted treatment to obtain an actual ammonia storage value; S4, a difference is obtained from the actual ammonia storage value obtained in the step S3 and an actual storage setting value, and a closed-cycle correction ammonia nitrogen ratio is obtained through a PID controller; and S5, the sum of the closed-cycle correction ammonia nitrogen ratio obtained in the step S4 and a feedforward ammonia nitrogen ratio is obtained to be finally converted into the needed urea emitting amount. According to the model-based urea emitting amount control method, a model-based closed-cycle control strategy is adopted, accurate control over urea emitting can be achieved, the engine emission requirements can be met, standardization work can be reduced, and the problem about crystallization can be solved.

The invention discloses a spoke type parallel piezoelectricity six-dimensional force sensor and a measuring method. The spoke type parallel piezoelectricity six-dimensional force sensor comprises an upper cover and a lower cover. The spoke type parallel piezoelectricity six-dimensional force sensor is characterized in that a first annular groove is formed in the lower surface of the upper cover, symmetrical wire guiding holes are formed in the lower surface of the upper cover, eight groups of first spokes are evenly distributed on the upper cover in a concentric mode, a second square groove is formed in the lower surface of each spoke, eight groups of second spokes are evenly distributed on the lower cover in a concentric mode, a third groove symmetrical with each corresponding second square groove is formed in the upper surface of each second spoke, a force sensitive element is arranged on the upper surface of each third groove, the upper surface of each force sensitive element is in contact with the surface of each corresponding second square groove, a hollow screw is installed in each wire guiding hole, four first screw holes are evenly formed in the upper cover in a symmetrical and concentric mode, four first screw holes are evenly formed in the lower cover in a symmetrical and concentric mode, and the upper cover, the force sensitive elements and the lower cover are fit together after four pre-tightening screws penetrate through the first screw holes. The spoke type parallel piezoelectricity six-dimensional force sensor is good in manufacturability and stability, easy to manufacture, long in service life, simple in operation, convenient to use, and low in cost.

The invention provides a time grating angular displacement sensor which belongs to displacement precise measuring devices. The sensor comprises a frame which is used for winding a coil and composed of an outer circle matrix and an inner circle matrix; and slots are formed on the inner peripheral wall of the outer circle matrix and the outer peripheral wall of the inner circle matrix at equal intervals. The sensor is characterized in that the excitation coil is wound on the matrix, and the induction coil is wound on the other matrix; the induction coil and the excitation coil carry out the relative motion; the excitation coil is connected with an excitation power supply, an excitation signal and an electric signal which is output by the induction coil are respectively connected to an amplification circuit and subjected to the phase comparison by a digital phase comparator after the shaping by a shaping circuit; and the phase difference of the two signals is represented by the number of interpolated clock pulses, further converted to the angular displacement value and directly or indirectly displayed as the angular displacement data after the treatment by a microprocessor and a memory. The sensor has the advantages of simple structure, low cost, high resolution, strong anti-interference ability and easy productization.

The invention discloses an optical phase delay precision measuring method and a system thereof. The system of the invention comprises a laser, a polarizer, a photo-modulator, a modulation signal source, a measuring phase retarder, a phase compensator, a polarization analyzer, an optical detector and a result output unit. The method of the invention is as follows that the optical modulator is added into a light path for optical modulation of detection polarized light and then modulation polarized light is generated; a result display unit realizes conversion from measurement of direct current zero point to measurement of alternate current zero point after conducting filtering process of the received signal, therefore, the position of an extreme point can be determined accurately and the measuring precision can be improved. The measurement of the invention is simple and convenient and the result is accurate and reliable, meanwhile, the precision is up to lambada/300; the invention is suitable for production of a wave plate and other optical delay devices and detection of the product in the sales department.

The invention relates to a flicker value calculation method based on improved FFT and an inverter. In order to solve the technical problems, the flicker value calculation method based on the improved FFT and the inverter are provided, and high-precision flicker value calculation is achieved. According to the technical scheme, the method includes the steps that (1), all phases of voltage signals are sampled to obtain a voltage sampled sequence; (2), a voltage root-mean-square value is calculated according to sampling length per semi-circle wave, so that a voltage root-mean-square value sequence is obtained; (3), the average value of the voltage root-mean-square value sequence is calculated, and the average value is subtracted from each voltage root-mean-square value, so that a new voltage root-mean-square value sequence is obtained; the new voltage root-mean-square value sequence is windowed, FFT is performed, and amplitude frequency is corrected through double spectrum line interpolation operation; (5), curve fitting is performed on voltage fluctuation and fluctuation frequency discrete points; (6), please see the formula in the specification, a transient flicker value P is calculated; (7), the steps from one to six are repeated, all transient flicker values P within ten minutes are calculated, and according to the formula in the specification, a short-time flicker value Pst is calculated. The flicker value calculation method and inverter are used for the field of electric power technologies.

The invention discloses a method and a system of ultrahigh resolution phase difference measurement with phase difference correction function and based on double-coincidence detection. The method includes the steps that: a. a measurement gate is formed by means of double phase coincidence detection between two pilot frequency signals, a first phase coincidence detection and coincidence pulse generating circuit conducts phase coincidence detection to a detected frequency signal and a public frequency signal and generates coincidence pulse; b. a second phase coincidence detection and coincidence pulse generating circuit conducts phase coincidence detection to a reference frequency signal and the public frequency signal and generates coincidence pulse; c. a gate-time generating circuit generates a gate-time signal according to a received enabling signal and a received closing signal, and a single chip computer obtains phase difference of the detected frequency signal and the reference frequency signal according to count data; and d. the coincidence pulse is counted within the time range near the enabling time and closing time of the measurement gate and a corrected value of the phase difference is obtained. Lastly, the ultrahigh resolution phase difference measurement is accomplished. By means of the method and the system of ultrahigh resolution phase difference measurement, counting error is eliminated, measuring resolution ration is high, and long time drift distance is small.

A method for demodulating grating wavelength of optical fibre includes using wideband optical source and a pair of optical fibre connected in series with one as reference and the other as measurement, measuring return power of this pair of optical fibre to obtain reflecting wavelength variation of reference fibre to measurement fibre for achieving wavelength modulation.

The invention relates to the field of artificial intelligence classification models, and specifically relates to an abnormal application detection method and device, a computer device and a storage medium. The method comprises the steps of obtaining credit application data of an applicant; obtaining applicant information and an application feature set corresponding to the applicant information according to the credit application data; inputting the application feature set into a preset isolated forest model, obtaining an application score corresponding to the application feature set, and constructing the preset isolated forest model based on an unmarked training feature set; and judging whether an application corresponding to the credit application data belongs to an abnormal application or not according to the application score. The credit application is scored by adopting the preset isolated forest model obtained by unsupervised learning, no label is needed for training, the practicability of the abnormal application scoring system is greatly improved, variable fraud and unseen fraud can be recognized, the abnormal degree of the abnormal application scoring system is output in ascoring mode, and the abnormal degree of the abnormal application scoring system is reflected, so that clients can understand and productize the abnormal application conveniently.

A nano-class suspension injection of oxaliplatin-phoshpatide composition for intravenous injection is proportionally prepared from oxaliplatin, surfactant, pH regulator, isotonic agent, antioxidant, water for injection, and optional excipient (for the freeze-dried powder injection).

The invention provides a batter pack preheating method and a system thereof. According to an embodiment of the invention, the battery pack preheating method comprises the following steps: one or more single cells of a battery pack is/are selected to form a discharging module; the discharging module is coupled to an input end of a DC/DC module; and an output end of the DC/DC module is coupled to a charging module of the battery pack, and the charging module preheats the battery pack through discharging.

The invention discloses a synchronous-sequence-based few-mode fiber mode-mode delay measurement system and method, and relates to the field of optical communication. The method comprises the following steps: at a transmitting end, generating a group of synchronous sequences, modulating the synchronous sequences to optical carriers, dividing the synchronous sequences into N-path single-mode optical signals, performing different delays on the N-path single-mode optical signals, coupling the delayed N-path single-mode optical signals to form one-path N-mode multiplexed optical signals, and inputting the one-path N-mode multiplexed optical signals into a to-be-measured few-mode fiber; at a receiving end, demultiplexing the received one-path N-mode multiplexed optical signals so as to obtain N-path single-mode optical signals, and recovering synchronous sequence information of the N-path single-mode optical signals; by a digital signal processing module, determining relative start time positions of the received N-path synchronous sequences, comparing the determined relative start time positions of the received N-path synchronous sequences with the relative start time positions of the N-path synchronous sequences at the transmitting end so as to obtain a relative delay between any two modes, and by combining with the length of the to-be-measured few-mode fiber, computing an mode-mode delay parameter of the to-be-measured few-mode fiber between the any two modes. The synchronous-sequence-based few-mode fiber mode-mode delay measurement system and method have remarkably reduced costs and are suitable for future large-scale applications under engineering conditions.

The invention relates to a pipeline connector used for a filling system with higher sealing requirements, and aims to provide a redundant seal pipeline connector which has a simple structure, is reliable to seal, simple and convenient to operate, and can carry out the on-line detection on the sealing effect of the pipeline connector at the same time. The redundant seal pipeline connector comprises a seal receptacle, a seal cone, end surface sealing pieces, radial sealing pieces and fastening pieces, wherein the seal receptacle comprises a first axial bulge, a first annular flange and a first welding end, which are manufactured integrally; the seal cone comprises a second axial bulge, a second annular flange and a second welding end, which are manufactured integrally; the end surface of the second axial bulge is in butt joint with the end surface of the first annular flange; the end surface sealing pieces are positioned on the butt-joint matched surfaces; the front end of the second axial bulge is sleeved with the first annular flange; the radial sealing pieces are positioned in the radial matched surfaces; the fastening pieces are used for fixedly connecting the seal receptacle with the seal cone; a pressure measuring channel is arranged on the first annular flange; an air outlet end port of the pressure measuring channel is connected with a seal cap.

The invention discloses a mechanical device for realizing the on-line automatic balance of a rotating machine. The device is of a split type structure, and comprises two parts of a split type moving ring and a split type stationary ring, wherein a split type transitional sleeve is connected with a rotating main shaft and the moving ring, and plays a role of supporting the moving ring; the series mounting and fixation are realized for all split components of the stationary ring in the axial direction through stationary ring set bolts; a split structure is adopted by the stationary ring; the stationary ring enwraps the moving ring in the circumferential direction; the split surfaces of all the split components of the moving ring are connected respectively by adopting ways of a bolt, a plug-in type, a connecting piece and the like; all the split components of the moving ring are subjected to the series mounting and fixation in the axial direction through moving ring set bolts. By using the split type structure of the mechanical device, an automatic balancing device is enabled to not only be applicable to the development of a novel product but also be applicable to an in-service rotating appliance; the simplification and the convenience of an automatic balancing head in mounting and disassembly processes are promoted greatly; the assembly and the disassembly of the automatic balancing device can be completed without needing to disassemble an original device; the application and popularization of the automatic balancing device are facilitated.

The invention discloses a manufacture method of elliptical stressed zone type polarization maintaining fiber, which comprises the following steps: producing a prefabricated rod to be processed with a stressed zone using MCVD technology; fixing the prefabricated rod to be processed on a grinding machine, grinding the external diameter to an appropriate dimension, and obtaining a core rod of the fiber prefabricated rod; drilling three apertures on the transverse plane of a quartz rod, obtaining a quartz coating member; inserting the core rod into a central aperture of the quartz coating member, obtaining a formal fiber prefabricated rod; fixing the fiber prefabricated rod on an optical fiber drawing tower and drawing into an elliptical stressed zone type polarization maintaining fiber. The cross section structure of the elliptical stressed zone type polarization maintaining fiber comprises from outside to inside in order: an outer cladding (1), a stressed zone (2), an inner cladding (3) and a core layer (4), which is characterized in that the stressed zone (2) is in elliptical shape, and the ovality is above 2.5:1. The invention has the advantages that the outer coating member is made of high purity quartz with low cost, and the production cost is reduced; the process flow is simple, and the repeatability is high, and the circular hole interior surface has a high fineness and good symmetry, and method improves the processing efficiency, and the optical performance and reliability of the polarization maintaining fiber are substantially improved.

The invention provides a model prediction control system for an electronic throttle valve based on FPGA, and belongs to the field of automotive electronic technology. The purpose of the invention is to provide a model prediction control system for an electronic throttle valve based on FPGA, wherein the model prediction control system can well meet control demands of a throttle valve, can be flexibly to reduce, expand and upgrade on line, and overcome shortages of an electronic control system of a present electronic throttle valve. The method of the system comprises designing a model prediction controller and implementing a control system through FPGA. The invention designs an advanced model prediction controller of a throttle valve, constraint optimization is successful, multi-target constraint control can be achieved because the throttle valve can quickly and accurately track, a good control effect is achieved. The model prediction control system for the electronic throttle valve based on the FPGA can be conveniently to upgrade, expand and maintain, the service life of a product can be prolonged, and costs of development and maintenance are reduced. Compared with a control system based on a single chip microcomputer or the like, the control system based on the FPGA is strong in anti-interference, productization is easier, and design on a special control chip can be achieved.

The invention discloses a light source and a setting method thereof, and an optical detection method and system. The method comprises the following steps: acquiring image gray level distribution characteristic data of a standard sample in a camera view field range; adjusting the light-emitting intensity distribution of a light source according to the image gray level distribution characteristic data, wherein the light source is an area array light-emitting device, and the area array light-emitting device comprises a light-emitting unit with controllable light-emitting intensity; and using an adjusted light source to illuminate a detected product, adjusting the luminous intensity distribution of an area array illumination light source, feeding back the compensated brightness distribution to the light source, and carrying out illumination for compensating the brightness distribution. Image saturation of a high-reflection area is avoided, and meanwhile the image brightness of a low-reflection area is improved. Therefore, the detection precision of the detected object irradiated by the light source is improved.

The invention provides an AI model packaging method and platform and electronic equipment, and relates to the technical field of artificial intelligence. The AI model packaging method comprises the steps of according to the programming language of an AI model to be packaged, using a preset packaging interface for packaging the AI model; in response to a selection instruction from a user, selectinga service framework from a service framework alternative library, and determining an input and output standard matched with the AI model; and embedding the packaged AI model into the service framework. According to the AI model packaging method and platform and the electronic equipment provided by the invention, the learning cost of an AI algorithm researcher is reduced, and the productization speed of the AI model is increased.