75results about How to "Reduce calibration process" patented technology

A control system for the automobile using mixed power features that its controller for multiple energy sources, motor controller, accumulator managing unit, engine managing unit, ABS controllr and TCU controller are connected via CAN bus, and said controller for multiple energy sources is serially connected between electronic throttle pedal and electronic air throttle for controlling both engine and electric motor.

The invention relates to an absolute calibration method for the radiation intensity of a Hadamard transform imaging spectrometer. In the method, an integrating sphere light source, a uniform attenuation sheet, an electric translation platform capable of translating along a direction vertical to an optical axis, a Hadamard transform spectrometer, a spectrometer radiation intensity meter, a main control computer and a camera obscura are arranged, wherein the Hadamard transform spectrometer and the spectrum radiation intensity meter are fixedly arranged on the electric translation platform respectively, and are arranged at the two ends of the electric translation table along the translation direction; the electric main control computer can be used for controlling the translation of the electric translation table; the electric main control computer is connected with the Hadamard transform spectrometer and the spectrum radiation intensity meter respectively to acquire output data of the Hadamard transform spectrometer and the spectrum radiation intensity meter; and light emitted from the integrating sphere light source can vertically enter the Hadamard transform spectrometer or the spectrum radiation intensity meter after passing through the attenuation sheet. Due to the adoption of the method, the technical problem of the lack of a calibration method for the radiation intensity ofa front slot type Hadamard transform spectrum spectrometer is solved. The calibration method is simple, and has high efficiency.

The invention discloses a vehicle distance measurement method based on a vehicle-mounted binocular camera. The method is characterized by comprising steps as follows: S1, vehicle detection is performed at the angle of view on one side of the binocular camera according to target vehicle texture information and prior road information, the position of a vehicle and the distance away from the vehicleare determined; S2, similarity matching of the target vehicle at the angle of view on the other side of the binocular camera is performed, a matching position with higher similarity is selected, the center offset of the target vehicle at two angles of view is determined, and the actual position of the target vehicle and the distance away from the vehicle are determined according to the center offset; S3, a confidence interval of the binocular camera is determined according to parameters of the binocular camera, the actual position of the target vehicle and the distance away from the vehicle, which are determined according to the center offset, are output in the confidence interval of the binocular camera, and the vehicle detection reliability is verified through an offline training classifier outside the confidence interval. With the adoption of the method, the vehicle distance measurement accuracy is improved.

The invention provides a method and a device for quickly splicing camera images. The method comprises steps: an image photographed by a standard camera is acquired as a standard image, and an image photographed by a target camera is acquired as a reference image; according to the position relationship between the standard camera and the target camera, a first predicted overlapped area is set on the standard image, and a second predicted overlapped area is set on the reference image; whether the first predicted overlapped area and the second predicted overlapped area are overlapped completely is judged; and when the first predicted overlapped area and the second predicted overlapped area are not overlapped completely, according to the actual overlapped condition between the first predicted overlapped area and the second predicted overlapped area, the adjustment direction of the target camera is determined. Thus, the splicing effects can be improved, the adjustment process is simplified, the adjustment times are reduced, and waste of manpower and material resources is avoided.

A stereoscopic optical assembly comprising: a single unit mounting bar having a plurality of openings for receiving a plurality of image capturing optical elements; a plurality of image capturing devices mounted on the single unit mounting bar; wherein the plurality of openings are arranged to enable obtaining a stereoscopic image from the plurality of image capturing devices, and wherein the stereoscopic image is derived from images captured by each of the image capturing devices.

The invention relates to a self-adaptive control method for a synchronizer-free transmission intermediate shaft brake of a commercial vehicle. The method is characterized by specifically including the steps a transmission control unit (TCU) needs to learn initial parameters of a newly-matched transmission intermediate shaft brake system and learns the initial parameters of the intermediate shaft brake on the conditions that the vehicle is static and an engine is idle; the TCU learns control parameters of separation of a clutch and braking of the intermediate shaft brake in the learning process of the initial parameters of the intermediate shaft brake, outputs the parameters of the intermediate shaft brake after learning is completed and gets connected to the clutch; and the TCU realizes the function of learning the parameters of the intermediate shaft brake and automatically loads data of the parameters of the intermediate shaft brake after recharged. The method has the advantages that the control adaptability is high, the control robustness is good, data of the TCU are calibrated little, the research and development cycle of products is short, and the homogeneity of the products is good.

The invention discloses a single-sensor double closed-loop urea-selective catalytic reduction (SCR) feedback control method based on an observer. According to a calibration test of a relation map between cross-sensitivity factors of an NOx sensor and the exhaust gas temperature and on the basis of a urea-SCR system mathematical model, a non-linear Kalman filtering observation theory is adopted and the diesel engine urea-SCR system C<NOx> and C<NH3> parameter observer based on data/mechanism is designed. Two estimators of C<NOx> and C<NH3> and the difference value of the respective target values are used as inputs of a controller, and a urea injection double closed-loop feedback controller is designed. The observer/controller and the NOx sensor arranged at the exhaust end of a urea-SCR system are used as main parts to establish the urea injection feedback control system. By means of the single-sensor double closed-loop urea-SCR feedback control method based on the observer, the hardware cost is reduced; the compromise control effect can be achieved through a double closed-loop system under the condition of single control input, limits of authority, double-output constraint and mutual contradiction; the observer is simple and reasonable in design; too many calibration processes during development of an engine electronic control unit can be reduced through the data/mechanism observer, and the strategic flexibility and universality are controlled.

The invention relates to a pintle chain bending plate forming device. The pintle chain bending plate forming device comprises an upper die structure and a lower die structure, wherein the upper die structure comprises an upper die plate, an upper base plate, an upper die base and an upper forming die, the upper die plate, the upper base plate and the upper die base abut against one another, the upper forming die is installed on the upper die base, the lower die structure comprises a positioning block, a lower forming die, a lower base plate, a bottom plate, a floating block, an ejector rod and an elastic block, a groove used for bending of a workpiece is formed in the center of the lower forming die, the positioning block is installed on the lower forming die, the floating block is arranged in the groove, the lower forming die and the bottom plate are installed in a matched mode through the lower base plate, ejector rod through holes are formed in the middle of the lower base plate and the middle of the bottom plate, the size of the groove is larger than that of the through hole in the middle of the lower base plate and that of the through hole in the middle of the bottom plate, the elastic block is fixed through an upper clamping plate and a lower clamping plate, one end of the ejector rod abuts against the floating block after penetrating through the through hole in the middle of the lower base plate and the through hole in the middle of the bottom plate, and the other end of the ejector rod is installed on the upper clamping plate and is in contact with the elastic block. According to the pintle chain bending plate forming device, the depth of parallelism of the two edges of a chain bending plate is increased, the precision of arcs bent by the chain bending plate is improved, the correction process and the chamfering process are omitted, and the quality of a chain is improved.

The invention discloses a method and a device for identifying characters from an image. The method comprises the steps of obtaining a to-be-identified image set; respectively extracting a text regionfrom each image in the image set; extracting characters from each text area; and identifying the extracted characters to obtain a character identification result corresponding to each image. The technical scheme has the beneficial effects that the text area is extracted from the image instead of overall identification of the image, recognition accuracy can be greatly improved, the method is advantaged in that interference of similar character lines in the image is avoided, the identification effect in the image with relatively good fusion of posters and other characters and backgrounds is especially good, compatibility with multiple business scenes is realized, image data production, verification and operation cost is reduced, automatic exploration of content clues contained in the image is realized, and the method is of great help for image-based data mining.

The embodiment of the invention provides a data transmission method, network element equipment and a communication system. Said method comprises: receiving a PDP context creation or update messages sent by a sending end, said creation or update messages carrying a service quality parameter of the PDP context; determining if the beared user plane tunnel corresponding to the PDP context can pass through UDP-Lite protocol for packaging, according to the service quality parameter, and returning a response message which carries the determination result to the sending end, so enabling the sending end to package the beared user plane tunnel corresponding to the PDP context through the UDP-Lite protocol, when the determination result information received being the user plane tunnel can pass through UDP-Lite protocol for packaging. technical solutions from embodiments of the present invention can package some business of high mispackage tolarence to be UDP-Lite protocol packets, reducing the message load calibration, significantly improving data transmission efficiency compared to the prior art.

Provided herein is an apparatus for sensing temperature. The apparatus for sensing temperature includes: a sensor unit configured to include at least one sensor resistor and output a sensing signal varying by the sensor resistor in response to temperature when the sensor unit is applied with an operating voltage; a data conversion unit configured to convert a change in temperature sensed based on the sensing signal output from the sensor unit into a time signal and generate temperature information based on the converted time signal; and a control unit configured to control the sensor unit and the data conversion unit and output a temperature value determined depending on the temperature information.

A forming method and forming mold for a semi-closed thin plate part, the forming mold includes a base and an inner tire, the base is provided with a concave cavity matching the shape of the bottom of the part, and the inner tire contains a left inner tire , the right inner tire and the support core, place the bent part on the cavity of the forming mold base, and then fill the left inner tire, right inner tire and support core in the bent part in turn Cavity, use positioning pins to fix and position the forming parts, and finally disassemble the forming mold, remove the process lugs, and correct the external dimensions of the parts.

The invention discloses a rapid verification device of backup automatic switching. The device comprises a screen assembling toolset as well as a power circuit and three detection circuits arranged inthe screen assembling toolset, the power supply provides DC power for the three detection circuits, each detection circuit comprises a simulated circuit breaker, two switches and two indicating lamps,the two switches control the position of the simulated circuit breaker, the two indicating lamps display the present position of the simulated circuit breaker, and the analog breaker is connected toa backup automatic switching device. The verification device is simple in structure, low in manufacture cost and simple in operation, and can detection backup automatic switching rapidly, and comparedwith a present verification manner, preparation time is reduced, a wiring link for test is omitted, fewer verification steps are included, test time is shortened, and the working efficiency is improved.

A bill import method and a system are disclosed. The method comprises the following steps of receiving a bill to be imported; according to bill information, verifying whether the bill satisfies a condition; after all the verifications are passed, importing the bill. By using the scheme, a lot of manpower, material resources and time which are used to check and verify the bills can be mitigated; during a process of importing the bill, an order is checked and simultaneously false bills are concentratedly recorded; cost in the bill is compared with system cost which is maintained in advance so that economic losses brought by an audit failure are avoided.

The invention discloses a distance measurement method and device based on deep learning, equipment and a storage medium, and the method comprises the steps: enabling all to-be-recognized distance measurement images to be correlated when all to-be-recognized distance measurement images captured by all observation points for the same observation object are received, and obtaining a target correlateddistance measurement image set; inputting the target associated distance measurement image set into a preset deep learning network model to determine the target position of the observation object, the preset deep learning network model being a trained model for determining the position of the observation object based on the associated distance measurement image set; and outputting the target position of the observation object. The technical problem that in the prior art, distance measurement can be conducted only through a tedious calibration process is solved.

The invention relates to the technical field of IC cards. The invention relates to an IC card, in particular to an IC card, an IC card power failure prevention data backup method and an IC card powerfailure prevention data recovery method. The IC card power failure prevention data backup method comprises the following steps: organizing data to be backed up into a record strip form, and sequentially recording the record strip to a data backup area from front to back from a first record strip so as to execute data backup of a current transaction, and enabling a transaction factor of the currenttransaction to participate in CRC calculation of the record strip; and after the transaction is submitted, updating the transaction factor of the transaction recorded in the transaction factor storage area. According to the method and the device, the execution efficiency of IC card data backup can be improved, and the situation of abnormal recovery of wrong records in the IC card is prevented.

The invention relates to an automatic calibration device and method for a laser displacement sensor. A laser displacement sensor and a laser interferometer are arranged on the two sides of a moving table top respectively, a light beam analyzer is arranged on the moving table top to achieve light spot measurement, and during calibration, a standard measured object is controlled to move in a stepping mode from the near end of a measuring range to the far end of the measuring range; laser displacement sensor data, laser interferometer data and light beam analyzer data at each sampling position are recorded, after full-scale scanning is completed, linear deviation is calculated according to laser displacement sensor readings and laser interferometer readings at different positions, and a calibration table is generated for calibration; and the shape and direction of the measurement light beam are fitted according to the section light spot data at different positions so as to adjust parameters such as focus and direction. The device can realize simultaneous measurement of linear deviation of the laser displacement sensor and single scanning of a light beam shape, is suitable for calibration of laser displacement sensors with various measuring ranges, and can remarkably improve calibration precision and production efficiency.

The invention discloses a knurling machine comprising a motor and a reduction gearbox. A motor shaft of the motor is in transmission connection with an input shaft of the reduction gearbox, a workingshaft is fixedly connected to the outside of an output shaft of the reduction gearbox, the working shaft is fixedly provided with a first gear, a transverse slide rail is arranged at one side of the working shaft, the slide rail is provided with a sliding plate seat which is in slide match with the slide rail, the sliding plate seat is rotatably provided with a first transmission shaft and a second transmission shaft parallel to the working shaft, the first transmission shaft and the second transmission shaft are provided with knurling wheels matched with each other, the second transmission shaft is provided with an eccentric wheel, an idle wheel seat is arranged at the right side of the slide rail, the idle wheel seat is rotatably provided with an idle wheel fork, and the front end of theidle wheel fork is provided with an idle wheel in matched transmission with the eccentric wheel. By using a symmetric processing method of active and passive knurling machines, the invention ensuresconcentricity of workpieces, saves correction procedures, greatly improves the processing accuracy and efficiency of products, and also reduces the processing cost, greatly saves the investment of apparatus, reduces the maintenance expense and saves the occupation of work sites.

The invention discloses a non-welding type piezoelectric vibrator connecting device and an ultrasonic flow detection device adopting the non-welding type piezoelectric vibrator connecting device. The non-welding type piezoelectric vibrator connecting device comprises a turncap, a sleeve and a piezoelectric vibrator seat. A turncap inner cavity is formed in the turncap, a turncap inner cavity step surface is arranged in the turncap inner cavity, one end of the sleeve is inserted into the turncap inner cavity and abuts against the turncap inner cavity step surface, and the other end of the sleeve is fixedly connected with the piezoelectric vibrator seat; an annular cavity is arranged in the piezoelectric vibrator seat, the annular cavity is used for embedding and installing a piezoelectric vibrator, and an annular cavity step surface for limiting the piezoelectric vibrator is arranged in the annular cavity; a first wire hole and a second wire hole which are communicated with the annular cavity are formed in the side walls of the two sides of the piezoelectric vibrator seat respectively. and a first signal wire and a second signal wire are electrically connected with two electrodes of the piezoelectric vibrator through the first wire hole and the second wire hole respectively. According to the invention, the signal wires are connected with the piezoelectric vibrator electrodes in a crimping manner, so that the influence ofhigh welding temperature and welding spot consistency on the working characteristics of the piezoelectric vibrator is avoided; and a piezoelectric vibrator can be replaced more conveniently when being damaged.

The invention discloses a shaping mold and method of thin-wall sheet metal parts. The mold consists of three sets of sub molds including a first bending mold, a second bending mold and a third bendingmold (wherein each set of sub mold consists of a female mold and a male mold). When spare parts are processed, the three sets of sub molds are bent according to the sequence of the mold 1, the mold 2and the mold 3, and the bending positions are shown as the figure 3. The specific processing technology of the spare parts comprises the steps of performing blanking, performing bending for the firsttime,...performing bending for the second time,...and performing bending. The mold disclosed by the invention is simple to operate, the profile size of the spare parts can be guaranteed, the labor intensity of workers can be reduced, and the production efficiency of the spare parts can be improved.