92results about How to "The detection method is simple and reliable" patented technology

The invention relates to a vehicle position and gesture estimation method based on a traffic sign. The method comprises the following steps that: firstly, through conventional GPS (Global Positioning System) equipment, obtaining the sketchy position of a vehicle, and obtaining an image in front of the vehicle through a monocular camera installed in front of the vehicle; then, detecting the traffic sign in one frame of image, and processing a next frame of image if no traffic signs are detected; after the traffic sign is obtained by detection, extracting four control point coordinates of the traffic sign, obtaining four pre-stored orthogonal control point coordinates of the traffic sign pre-stored in a database through GPS sketchy information, calculating a plane perspective transformation matrix from a traffic sign position to a database orthogonal position in an input image, and carrying out resolving by the matrix to obtain the accurate position and gesture of the vehicle under a traffic sign coordinate system, wherein the four control points correspond one by one. When the vehicle is driven on a road provided with the traffic sign, the position and the gesture of the vehicle under the traffic sign coordinate system can be quickly positioned, and the method has the advantages of being high in instantaneity, low in cost and easy in large-scale promotion.

The invention discloses a system and a method for phase sequence detection and rotor initial location positioning of a three-phase permanent-magnet synchronous motor. The system comprises a permanent-magnet synchronous motor, a controller, an inverter and a position sensor, wherein the connecting phase sequence of the inverter corresponding to the permanent-magnet synchronous motor is abc or acb, the controller controls the rotor to rotate on the basis of the voltage vector control technology and gives voltage vectors of two fixed phase positions of a stator sequentially so as to drive the rotor to rotate to the corresponding positions sequentially, and the position sensor is used for acquiring two absolute position angles to which the rotor rotates, the controller is used for calculating the difference of the two absolute position angles to judge the connecting phase sequence of the permanent-magnet synchronous motor, the initial location angle of the rotor is set by the given pressure vector, the initial location angle and the motor phase sequence information are stored in an eeprom (Electrically Erasable Programmable Read-Only Memory), and the controller acquires the initial location angle and the motor phase sequence from the eeprom or by calling the detected initial angle and the phase sequence subfunction each time the controller is electrified. The system is simple and the detection method is simple, reliable and accurate.

The invention discloses a detection method of the handheld terminal for detecting automatic welding equipment. The handheld terminal is provided with a data analysis and diagnosis module and a data collection module, wherein the data analysis and diagnosis module comprises a processing chip and a field-programmable gate array, the data collection module is provided with an analog-to-digital conversion circuit, the analog-to-digital circuit is respectively connected with an automatic welding equipment controller, a current clamp, a mutual inductor and a camera through signal lines, the handheld terminal is provided with a remote monitoring module, a storage module, and a communication module and a display module. The method adopting the terminal for detecting the welding equipment comprises the steps including terminal self inspection, equipment connection, parameter setting, signal processing, result display, remote detection, system upgrading and the like. The terminal has the characteristics that the size is small, the functions are rich, and the response speed is high. The detection method can be used for fast and precisely detecting the power supply quality of the automatic welding equipment and the operation quality in the welding process.

The invention discloses a digital watermarking method for generating a holographic image by applying a computer, which relates to a multimedia signal processing technology. The digital watermarking method for generating the holographic image by applying the computer has relatively good imperceptibility and strong anti-attack performance and is more flexible in calculating the holograph, low in cost and wide in application scope. The step for generating the holographic image by applying the computer serves as a watermark information sequence to be embedded into a carrier image. The steps for embedding the holographic image into the carrier image adopts a watermark embedding algorithm to embed the generated holographic image into the carrier image as the watermark information sequence of the carrier image, to ensure the robustness to various attacks and imperceptibility of a watermark. The step for a watermark detection algorithm is judging whether an image contains the watermark information; and the step for computer generation of the holographic image is generating the content of the watermark extracted on the computer clearly.

The invention discloses an automatic tool changer comprehensive performance detection test stand, and belongs to the field of numerical control machine tool functional unit performance detection. The automatic tool changer comprehensive performance detection test stand integrates the mechanical technology and the sensor technology and virtual instruments, and accomplishes detection of all the following performances: tool change time, output shaft positioning accuracy (tool-capture-in-place accuracy, tool-change-in-place accuracy, returning accuracy, linear displacement accuracy and repetitive positioning accuracy), mechanical arm vibration, ATC operation stability, tool change success rate, globoidal indexing cam mechanism comprehensive indexing accuracy and dynamic characteristics. The technical problem that positioning accuracy is difficult to detect due to the fact that compound motion (rotary motion and linear motion) of the output shaft is solved by a positioning component of an encoder A; input and output parameters of a globoidal indexing cam mechanism are directly detected by the encoder A and an encoder B, and the comprehensive indexing accuracy and the dynamic characteristic detection accuracy of the globoidal indexing cam mechanism are improved. The automatic tool changer comprehensive performance detection test stand provides a comprehensive performance detection scheme for a professional manufacturing plant, and has significant practical meanings for a functional unit professional manufacturing plant.

The invention discloses a pressure detection method of a variable-frequency air conditioner. The pressure detection method includes the following steps of receiving a user instruction, controlling the variable-frequency air conditioner to enter the pressure detection mode according to the user instruction, making the variable-frequency air conditioner run according to preset control parameters after the variable-frequency air conditioner enters the pressure detection mode, detecting the current indoor and outdoor environment temperature, detecting the system pressure value of the variable-frequency air conditioner, obtaining the current running mode of the variable-frequency air conditioner according to the user instruction, obtaining the system pressure threshold value of the variable-frequency air conditioner according to the current indoor and outdoor environment temperature and the current running mode of the variable-frequency air conditioner, and judging whether the system pressure of the variable-frequency air conditioner is in the normal state or not according to the system pressure threshold value and the system pressure value. By means of the pressure detection method, whether the system pressure of the variable-frequency air conditioner is in the normal state or not can be accurately judged, and the method is simple and reliable. The invention further discloses a pressure detection device of the variable-frequency air conditioner and the variable-frequency air conditioner.

The invention relates to a static rigidity detection method, in particular to a method for detecting static rigidity of a light passenger car body, which comprises the following steps: applying a certain torque to the front part of the passenger car body by utilizing a lever, acquiring displacement deformations at two longitudinal beams of the passenger car body, calculating a torsional angle of the passenger body and calculating the slope f a fitting straight line according to the results of opposite torsional angles between a front axle and a rear axle of the passenger car body to obtain the torsional rigidity of the passenger car body; then, applying a certain bending moment to the middle part of the passenger car body by utilizing the lever or a weight, acquiring displacement deformations at the two longitudinal beams of the passenger car body, calculating the bending rigidity of the passenger car body according to maximal applying force and maximal deformation; finally, describing a torsional and bending curve by utilizing the data of the torsional and bending displacement deformations of the passenger car body and judging whether the partial performance of the passenger car body is proper according to the curve. The invention not only can obtain the static rigidity value of the passenger car body, but also can validate the accuracy of CAE analysis results and detect the result accuracy, thereby having higher reliability.

The invention relates to a prostateexosomal protein (PESP) antigen, a specific corresponding antibody and application thereof, and on the basis further acquires a kit based on prostasome leakage protein quantitative indirect enzyme-linked immunoadsorption so as to effectively detect and diagnose chronic prostatitis. By means of reaction system precision detection, stability test and destructive test on the urine detection kit based on PESP antibody-antigen reaction, the reagent quality shows high batch production probability. The application is truly noninvasive, the operation is simple, and the kit has high sensitivity and specificity. The kit can alleviate the patient pain caused by chronic pelvic pain syndrome / chronic prostatitis, and also early diagnosis can further strengthen prevention and treatment of prostate cancer, therefore the kit has wide application prospect.

The invention discloses clothes processing equipment and a control method thereof. The clothes processing equipment comprises a tank body system, a vibration system, a driving system, a transmission system and a control system, wherein the vibration system is arranged in the tank body system; the control system controls the driving system to drive the vibration system to work through the transmission system; and the clothes processing equipment also comprises a transmission detection system for judging whether the transmission system is abnormal by detecting the vibration system, so that the defects that the equipment and clothes are damaged or the actual washing or drying effect is not ideal and the like if the equipment still continuously executes the current operating program after the transmission system is abnormal are effectively avoided.

The invention discloses a protein chip for lyme disease flagellin antigen immunoserology diagnosis and a preparation method and application of the protein chip. The protein chip is characterized in that borrelia burgdorferi recombination flagellin antigen probes are fixed on the surface of a solid phase carrier in a dot matrix mode; the solid phase carrier is a 16-amino-1-hexadecyl mercaptan modified gold foil chip which is combined with 4-(N-maleinimide methyl) cyclohexane-1-carboxylic acid succinimide ester and 4-(dimethylamino) pyridine. The protein chip disclosed by the invention can accurately detect an anti-flagellin antigen IgG antibody and an anti-flagellin antigen IgM antibody in serums of lyme disease patients, the operation is simple, and the detection result is stable.

The invention discloses a suspension gap visual detection method based on image processing. The suspension gap visual detection method comprises the steps: firstly obtaining an original high-definition image of a suspension gap region, and processing the original high-definition image to obtain a binary image of a suspension gap region of interest; calculating the number of pixel points with a binarization result of 1 in the binarized image of the suspension gap region of interest to obtain the pixel area s of the suspension gap region of interest; and finally, calibrating the pixel area s andthe actual gap distance, and calculating the actual gap distance d. According to the suspension gap visual detection method, the actual gap distance is calculated according to the image pixel area ofthe region of interest of the suspension gap, and the measurement precision is high, and the anti-interference capability is high, and asymmetric interference existing in the region of interest of the suspension gap can be effectively removed, and meanwhile an interference fault position is alarmed and positioned; and the actual suspension gap distance change is calculated through the image pixelarea change of the region of interest of the suspension gap, and the tracking is sensitive, and the linearity is high, and both the real-time performance and the accuracy can meet the requirements ofa suspension ball control system.

The invention discloses a static and dynamic tension detecting system for chains of chained tool magazines, and belongs to the field of performance detection for functional components of numerical-control machine tools. The static and dynamic tension detecting system has the advantages that a sensor technology, a wireless data communication technology and a computer technology are integrated in the detecting system, so that static tension of the chains can be detected, dynamic tension of the chains further can be monitored in real time when the tool magazines run, signals can be stored, processed and analyzed by a PC (personal computer), and curvilinear figures of the tension of the chains can be generated; the static and dynamic tension detecting system is provided with special tension sensors, sensor mounting rings and chain wheels, and a wireless signal transmission technology is adopted, so that the technical problem of difficulty in detecting dynamic tension of chains can be effectively solved; a real-time detecting scheme for the tension of the chains is provided for professional manufacturing plants, accordingly, reliable technical parameters can be provided for designers, and a test foundation can be laid for promoting the development of chained tool magazines in China.

The invention discloses an automatic pimple detection method. The method comprises steps that S100, an original image is acquired; S200, skin color filtering and face key point positioning of the original image are carried out, a binary skin color graph of the original image is acquired; S300, the binary skin color graph is utilized to extract a connected pimple zone; S400, according to the connected pimple zone, pimple zones of the original image are coarsely detected; and S500, the pimple zones are screened, and the accurate pimple zones are acquired through screening according to local pimple characteristics. The method is advantaged in that the pimples, moles and relatively obvious speckles on a face can be automatically and accurately detected, the method is simple and reliable, computational complexity is low, and the beauty effect can be realized in combination with a subsequent pimple removal method.

The invention relates to an online automatic detection device for strip steel loop decoupling and a detection method thereof. The device comprises a rotary encoder used for detecting loop quantity and installed at the driving shaft end of a loop winching motor, a plurality of position induction switches respectively and correspondingly arranged at the normal stopping positions of loop trolleys and a programmable logic controller (PLC). The input end of the PLC is connected with the position induction switches and a winching encoder, and the output end of the PLC is connected with an alarming device. When a loop cart moves to the position of one loop trolley, the rotary encoder inputs measured loop quantity into the PLC. If the loop trolley is located at the normal stopping position, the position induction switch of the loop trolley is activated, the corresponding PLC input signal is 1, otherwise, the signal is 0. The position induction signal of each loop trolley is sequentially input into the PLC to be compared with value of a control indicator. If the signal is not inconsistent with the value, the loop trolley is in the decoupling mode, and the alarming device alarms. The detection method is simple, reliable and effective, has high cost performance and is capable of automatically and timely judging loop decoupling.

The invention relates to a dual-seal ball valve seat compact in structure and belongs to the technical field of ball valves. The dual-seal ball valve seat compact in structure is characterized by comprising a valve body with a channel, a ball body arranged in the valve body and a limiting ring, wherein the inner wall of the channel is provided with an outer valve seat and an inner valve seat whichare located between the ball body and the valve body, the outer valve seat is arranged at the end, close to the ball body, of the inner valve seat, one end of the outer valve seat abuts against the ball body and forms a hard seal face, the other end of the outer valve seat abuts against the end face of the inner valve seat, the outer valve seat is provided with an annular protrusion, one end of the limiting ring is clamped to the protrusion to limit axial displacement of the inner valve seat, and the other end of the limiting ring is fixedly connected with the inner valve seat. The dual-sealball valve seat compact in structure has the beneficial effects that the dual-seal structure of the inner valve seat and the outer valve seat is adopted, the seal reliability is guaranteed, an more excellent seal performance is achieved; the outer valve seat is fixed through the limiting ring, the structure is compact, the volume of the outer valve seat is greatly reduced, and the manufacturing cost is reduced; and assembling and disassembly are convenient, and maintenance is facilitated in a later period.

The invention discloses a transfusion soft bag heat-seal strength on-line detecting device which comprises an air inflation part, bag pressing plate parts, an air inflation channel and a detecting component. The air inflation channel is arranged on a needle filling part at a transfusion soft bag production line filling working position and is used for being communicated with a transfusion soft bag to be detected. The detecting component is used for detecting whether the transfusion soft bag is broken by expanding through air pressure. The air inflation part is connected with the air inflation channel. An air on-off valve is arranged on an air path between the air inflation part and the air inflation channel. The bag pressing plate parts are arranged on the two sides of the transfusion soft bag to be detected and can tightly press the transfusion soft bag after air inflation expansion. The detecting component comprises travel switches or optoelectronic switches which are arranged on the bag pressing plate parts and are matched with the transfusion soft bag for action. The invention further discloses a transfusion soft bag production line which comprises the filling working position, and the transfusion soft bag heat-seal strength on-line detecting device is arranged on the filling working position. The transfusion soft bag heat-seal strength on-line detecting device is simple and compact in structure, low in cost, convenient to control, high in reliability and capable of achieving real-time on-line detecting, the labor intensity of workers is lowered, and bag manufacturing pass rate is improved.

The invention discloses a detecting method for the smoke gas index 850 DEG C / 2S design requirement of a solid incinerator. Through the lowering speed of the temperature of a first flue, the temperature of a secondary air spray-in opening, the average temperature of the first flue, the primary air flow rate at the average temperature of the first flue and the ascending height of the smoke gas in two seconds are sequentially obtained according to formulas, and finally, the exhaust temperature of the smoke gas after the two seconds is obtained, so whether the exhaust temperature is higher than 850 DEG C or not is judged, and whether the design requirement of a smoke gas index is met or not is further judged. Therefore the detection method provided by the invention has the advantages that the simplicity and reliability are realized; the calculation process is greatly simplified; and the accuracy and the reliability of the 850 DEG C / 2S data detection are improved.

The invention relates to a jump synchronism detection method for a jump-type temperature controller, so as to detect the jump condition of the jump-type temperature controller. The method comprises the following steps: a), providing the temperature controller; b), heating the temperature controller to a first temperature, and sending whether double metal pieces of the temperature controller jump or not and whether the connection state of the temperature controller is changed or not; c), judging whether the temperature controller is qualified or not; d), enabling the temperature controller to be cooled to a second temperature, and sensing whether the two metal pieces of the temperature controller jumps or not and whether the connection state of the temperature controller is changed or not, wherein the second temperature is lower than the first temperature; e), judging whether the temperature controller is qualified or not. The method is advantageous in that 1, the method is simple and reliable, and is convenient to implement; 2, the automation operation is used for replacing the conventional manual detection, thereby greatly improving the detection efficiency, and reducing the manual use cost and labor intensity; 3, a judgment result is accurate, and the detection precision is improved.

The invention provides a method for detecting the abrasion loss of a sealing element. The method at least comprises the following steps of adding a tracing element to the sealing element; putting thesealing element into a machine table to be put into actual use or carrying out a bench test; extracting oil liquid of the sealing element in actual operation of a machine table or in a bench test to obtain an oil liquid sample; and detecting the concentration of the tracer element in the oil sample through oil, and calculating to obtain the wear degree of the sealing element. According to the method for detecting the abrasion loss of the sealing element, the abrasion degree of the sealing element is obtained before the sealing element is abraded and loses efficacy, and economic losses and environmental pollution caused by sealing failure of the sealing element are avoided.

The invention discloses a metal section small hole detection method and system based on an electrical vortex sensor. The detection system consists of an electrical vortex sensor probe and a signal controller, wherein the signal controller comprises a signal generation circuit and a signal processing circuit. The electrical vortex sensor probe is arranged over against a small hole in a metal section, and is not in contact with the metal section; when the distance between the probe and the metal section is defined, and the small hole in the metal section passes through the probe, a signal output by the signal processing circuit has jump change. The method and the system are suitable for detecting the small hole in the metal section, and can especially and predominantly detect the small hole with nonmetallic substance interference on the surface.

The invention belongs to the field of biomedicine detection and particularly relates to a protein combined chip for Lyme disease immunoserology diagnosis and a preparation method and application thereof. The protein combined chip comprises a solid phase carrier and capture molecules fixed to the surface of the solid phase carrier, and the capture molecules comprise Borrelia burgdorferi flagellin, Borrelia burgdorferi outer membrane protein C (OspC) and Borrelia burgdorferi variable main protein sequence expression E protein (VlsE). The protein combined chip can further comprise capture molecules VlsE IR6 polypeptide. Compared with a traditional method, the protein combined chip can conveniently distinguish infection types on the basis of greatly increasing the positive rate.

The invention discloses a device for detecting a contact state of a high-voltage electric connector of an electric vehicle. The device consists of high-voltage electric connector metal binding posts, metal conductors, a voltage measuring device, an alarm device and a whole vehicle control system, wherein materials of the metal conductors are different from those of the high-voltage electric connector metal binding posts; and the high-voltage electric connector metal binding posts are connected with the metal conductors to form a thermocouple loop. The invention has the advantages that: a method for detecting the contact state of the high-voltage electric connector of an automobile is simple, reliable, efficient and accurate; according to a principle of a thermocouple, only one metal wire is arranged on the original high-voltage electric connector, and the cost is well controlled on the basis of guaranteeing the detection accuracy; and due to the adoption of a circuit for detecting the contact state of the high-voltage electric connector, a high-voltage electric contact state can be monitored in real time, high-voltage electricity can be controlled to be turned on / off according to different contact states, a driver is prompted or alarmed, and danger can be effectively prevented.

The invention discloses a basin-type insulator crack detector based on fiber gratings. The basin-type insulator crack detector is characterized by comprising a broadband laser, six fiber gratings connected in series to one optical fiber, a fiber grating demodulation module and an A / D (analog to digital) sampling and processor module, wherein the six fiber gratings connected in series to one optical fiber are circularly bonded to the periphery of a basin-type insulator, one end of the optical fiber is accessed to the broadband laser, the other end of the optical fiber is connected with the fiber grating demodulation module, an output signal of the fiber grating demodulation module is accessed to the A / D sampling and processor module, and the A / D sampling and processor module acquires sampled data by an A / D sampler and uses a processor to perform signal judgment on the sampled data; the cracks are detected by changing the central wavelengths of the six fiber gratings.

The invention discloses a two-dimensional code anti-counterfeiting method. A computer program is employed for generating a conductive region in a two-dimensional code, and conductive ink is employed for printing the conductive region. Common ink is employed for printing a common region, thereby forming the two-dimensional code. The method comprises the steps: enabling the resistance information of the conductive region and the position information in the two-dimensional code to be corresponding to ID numbers and to be stored; forming a database; obtaining the ID numbers through reading the two-dimensional codes, wherein the resistance information of the conductive region and the position information in the two-dimensional code can be queried from the database; detecting the resistance value of the conductive region in the two-dimensional code, and comparing a detection value with a query value; judging the authenticity of the two-dimensional code. The method is simple and reliable, and the anti-counterfeiting reliability of the two-dimensional code is high. The invention also provides an anti-counterfeiting two-dimensional code and a commodity anti-counterfeiting method.

The invention relates to the technical field of massage, in particular to a massager detection circuit and a massager. The massager includes a processor, a drive circuit module, a working module and a detection resistor, the processor, the drive circuit and the motor are electrically connected in sequence, the driving ground terminal of the drive circuit module is grounded through the detection resistor, and the detection resistor, the working The modules are all electrically connected to the processor, the processor drives the motor through the drive circuit module, the drive current flowing through the motor passes through the drive ground terminal and the detection resistor to ground in turn, and the processor detects the drive current flowing through the detection resistor The current or the voltage at both ends of the detection resistor is used to determine the change of the output power of the motor, and the processor detects the change of the output power of the motor to control the work of the working module; the massager adopts the above-mentioned massager detection circuit. The massager detection circuit and the massager can detect whether the output power of the motor thereon changes for subsequent control.

The invention discloses an island detection method of an active photovoltaic energy storage system. A grid-connected photovoltaic power generation system is composed of a photovoltaic module and an inverter, the photovoltaic module is connected to a public supply system through the inverter and a breaker, a local load is connected to a common coupling point between the inverter and the breaker, a slightly-distorted current is injected into a power grid during detection, and the frequency continuous changing trend is accordingly formed. When the photovoltaic power generation system is connected with the power grid, the frequency of the power grid cannot be changed; when the photovoltaic power generation system is separated from the power grid, the frequency of the voltage output by the inverter is forced to increase and decrease. The island detection method is simple and reliable.

The invention relates to a static and dynamic tension detection system for a chain tool magazine chain, which belongs to the field of performance detection of functional parts of numerical control machine tools. This detection system integrates sensor technology, data wireless communication technology and computer technology. It can not only detect the static tension of the chain, but also monitor the dynamic tension of the chain in real time when the tool magazine is running. The PC completes the signal storage, processing and analysis, and can Generates a graph of the chain tension curve. Through the special tension sensor, the sensor installation ring and sprocket are designed, and the signal wireless transmission technology is adopted, which effectively solves the technical problem of difficult detection of chain dynamic tension. Provides a chain tension real-time detection scheme for professional manufacturers, can provide reliable technical parameters for designers, and provides an experimental basis for promoting the development of chain tool magazines in my country.

The invention relates to the technical field of forklifts, in particular to an automatic forklift robot butt joint method and an automatic forklift robot. The automatic forklift robot butt joint method comprises the steps that firstly, a pose detection mode and a target position of a cargo are determined according to the type of the cargo, the pose of the cargo is detected according to the pose detection mode of the cargo, if cargo pose detection fails, the automatic forklift robot is controlled to move by the first displacement amount and then continues to detect the pose of the cargo, then the position and direction of the automatic forklift robot are adjusted according to the pose of the cargo to adapt to the pose of the cargo, the automatic forklift robot is controlled to fork the cargo at the proper pose of the cargo, and the cargo is distributed to the target position. When the automatic forklift robot carries the cargoes through the method, the cargoes do not need to be placed at accurate positions, the automatic forklift robot can be automatically adjusted to carry the cargoes at different positions, and the automation capacity of the automatic forklift robot is further improved.

The invention relates to the technical field of chip mounters, in particular to an automatic chip mounter. The automatic chip mounter comprises a driving assembly, a die bonding assembly and a sensing assembly which are connected in sequence. The die bonding assembly is used for sucking a wafer, the driving assembly drives the die bonding assembly to place the wafer on a substrate for bonding, and the sensing assembly detects the pressure between the wafer and the substrate when the wafer is bonded by the die bonding assembly. According to the design, the pressure when the wafer is attached to the substrate is detected, so that the phenomenon that the wafer and the substrate are not firmly attached or misplaced due to the fact that the attaching pressure between the wafer and the substrate is too small when an automatic chip mounter is used for die bonding can be avoided, meanwhile, the wafer can be prevented from being damaged due to the fact that the attaching pressure between the wafer and the substrate is too large, and by detecting the pressure when the wafer is attached to the substrate, the mounting precision between the wafer and the substrate during die bonding by the automatic chip mounter is further improved.