32results about How to "Detection adaptation" patented technology

The invention discloses a bridge crack detection device and detection method. The automatic bridge crack detection device comprises a control device, an installation car, a telescopic rod mechanism and a detection device, wherein the control device comprises a data processing device, a display, a walking controller, a camera shutter frequency detection unit, a telescopic rod adjusting device, a telescopic rod adjusting controller, a first distance detection unit, a second distance detection unit, an illuminating brightness detection unit, a brightness adjusting module and an illuminating brightness controller. The detection method comprises the steps of (1) preparatory work before detection; (2) shooting and uploading of an image; (3) image capturing; (4) bridge crack image processing; (5) calibration object image calibration; and (6) calculating and synchronous outputting of bridge crack parameters. The bridge crack detection device is simple in structure, reasonable in design, and convenient to use and operate, accurate and quick detection of the size of bridge cracks can be achieved, and the work efficiency of bridge crack detection and the reliability of detection data are improved.

The present invention designs a painted glass defect detection system based on a CCD area array camera, aiming at the current situation that glass manufacturers generally use artificial methods to detect defects on painted glass. It consists of a mobile stage, 5 CCD area array cameras with lenses, 1 strip-shaped red light scanning light source, network cables, switches, host computers, and corresponding fixed facilities. It is mainly divided into two modules, one is the glass image The acquisition module, the second is the glass image processing module, and the two modules are connected through the network. The processing program uses the edge finding operator to judge the glass area and extract statistical defect information.

The invention discloses a determination method for heparin activity. The method comprises three steps of treatment of standard substances and samples, establishment of a standard curve and sample measurement, and calculation of heparin activity contents in the samples, wherein reaction systems and time are as follows: (1) 10-40 microliters standard curve establishment solution and samples with 0-0.1 IU/ml heparin activity concentration are mixed with 10-40 microliters antithrombase with 1 IU/ml concentration, and are incubated for 3 minutes at the temperature of 37 DEG C; (2) 10-40 microliters activated bovine blood coagulation factor X with 10 nkat/ml concentration is added for mixing, and is incubated for 1.5 minutes at the temperature of 37 DEG C; (3) 10-40 ml color development substrate S-2765 with 2.5 mmol/L concentration is added for mixing, and is incubated for 3 minutes at the temperature of 37 DEG C; and (4) 10-40 microliters acetic acid with 50% of volume concentration is added for evenly mixing, and then the reaction is stopped. The method has the advantages of lower reagent dosage, high detection efficiency and high precision of measurement results, and is more suitable for detecting the samples with lower heparin activity.

The invention discloses a detection ruler for perpendicularity, flatness and levelness of wall columns and a detection method thereof. The detection ruler includes a main ruler body, multiple measurement ruler bodies positioned on the same side are rotatably installed on the main ruler body in the length direction at intervals and can be fixed when rotating to the positions perpendicular to the main ruler body; at least one measurement ruler body positioned in the middle can slide on the main ruler body and be fixed. When the detection ruler is used for detecting the perpendicularity of a wallcolumn, the outer end faces of the measurement ruler bodies are aligned to the surface of the wall column, a string pendant is fixed to the measurement ruler body at the top, and then by reading thevalues, corresponding to each measurement ruler body, of a string, the perpendicularity is determined. By means of the detection ruler for the perpendicularity, flatness and levelness of the wall columns and the detection method thereof, multi-point location detection can be conducted on wall column templates and the surfaces of the wall columns after pouring, the detection result is precise, andthe detection method is simple and high in detection speed.

The invention discloses a bridge cable electromagnetic flaw detection device and application thereof, and relates to the field of bridge cable nondestructive testing. The bridge cable electromagnetic flaw detection device comprises a sleeve. A plurality of magnet exciting coils are fixed to the outer wall of the sleeve, a plurality of grooves are formed in the inner wall of the sleeve, and each groove is internally and fixedly provided with a detection coil for detecting leakage magnetic flux at a broken wire position. A bridge cable nondestructive testing system comprises the bridge cable electromagnetic flaw detection device, an insulated gate bipolar transistor connected with the magnet exciting coils, a power supplying device connected with the insulated gate bipolar transistor, and a computer connected with the insulated gate bipolar transistor. A signal processing device is used for receiving and processing flaw signals sent by all the detection coils and sending processed flaw signals to the computer. The bridge cable electromagnetic flaw detection device is large in detection area, low in weight and capable of detecting high-altitude bridge cables which are difficult to arrive for people. According to the bridge cable nondestructive testing system, the detection sensitivity can be adjusted, and the detection accuracy rate can be increased.

The invention discloses a short-time Fourier transformation-based intra-pulse frequency coded signal parameter measurement method and belongs to the technical field of radar signal reconnaissance. With the method adopted, parameter measurement can be performed on intra-pulse frequency coded signals under the conditions of intra-pulse fluctuation, strong interference and weak received signals in acomplex environment. The method specifically comprises the following steps that: short-time Fourier transformation (STFT) is carried out on to-be-detected signals; two-dimensional morphological filtering is carried out to smooth a noise floor; two-dimensional over-threshold detection is carried out, namely, an adaptive threshold value and a large signal threshold are calculated, with the larger one in the adaptive threshold value and the large signal threshold adopted as a current detection threshold, over-threshold detection is performed on the transformation result of the STFT; sub-codes aredetected in a two-dimensional over-threshold detection result; data corresponding to each sub-code are intercepted from the original data of the to-be-detected signals according to the detected starting and terminal positions of the sub-codes, Fourier transformation (FFT) is performed, the frequency of the sub-codes can be calculated, and other parameters of the to-be-detected signals are calculated according to the frequency of the sub-codes.

The invention provides a cable bending radius measurer and a detection method. The cable bending radius measurer comprises a fixation support, a telescopic calibrated scale and a rotating shaft. The rotating shaft enables the fixation support and the telescopic calibrated scale to be fixed together; and the fixation support and the telescopic calibrated scale can rotate around the rotating shaft.The telescopic calibrated scale comprises three hollow square cubes, that is, an upper calibrated scale, a middle calibrated scale and a lower calibrated scale respectively, wherein the upper calibrated scale, the middle calibrated scale and the lower calibrated scale are progressively increased in external diameter; the upper calibrated scale can be withdrawn into the middle calibrated scale, andthe middle calibrated scale can be withdrawn into the lower calibrated scale; and the upper calibrated scale, the middle calibrated scale and the lower calibrated scale are respectively marked with scale lines. The cable bending radius measurer and the detection method enable detection of cable bending radius to be simple and easy to carry out; the method can visually and accurately detect whether the cable bending radius meets design requirements, thereby improving cable bending radius detection accuracy and improving detection efficiency of the cable bending radius; and the cable bending radius measurer and the detection method can be well suitable for detection of various cable bending radiuses.

The invention discloses an air pump electromagnetic valve element sorting system and a working method thereof. The system comprises a fixing base, a U-shaped frame, an air cylinder, an air pump electromagnetic valve, a cover cap, pressurization air source equipment, a high-pressure air inlet valve, a high-pressure exhaust valve, an air pressure sensor and a controller. The air pressure sensor detects air pressure information in a high-pressure sealing cavity and transmits the air pressure information to the controller; the remote control terminal transmits a control command to the controller;the controller controls opening and closing of the pressurization air source equipment, the air pump electromagnetic valve, the high-pressure air inlet valve and the high-pressure air outlet valve according to the control command; rapid and efficient detection of the pressure-resistant value of the valve element of the air pump electromagnetic valve is achieved, sorting of the air pump electromagnetic valve is facilitated, and the rate of certified products is increased.

The invention relates to a three-dimensional surface shape detection method and device, and the method comprises the following steps: a, projecting a stripe pattern to a detected object, and monitoring a projection process; b, switching to the next stripe pattern after the projection of the current stripe pattern is completed; and c, calculating the three-dimensional contour morphology of the measured object according to the projection information reflected by the measured object. The projection equipment is monitored in the projection process of the projection equipment, so that the next pattern is immediately switched after the projection of the current stripe pattern is completed, and the overall detection efficiency is improved.

The invention discloses a biosensor for detecting tobramycin. The biosensor comprises an aptamer probe, a hairpin probe H1, a hairpin probe H2, Klenow Fragment polymerase, Nt.BbvCI endonuclease, a buffer solution and graphene oxide. The sequence of the aptamer probe is as shown in SEQ ID No: 1, the aptamer probe is formed by hybridizing an aptamer Aptamer with the sequence as shown in SEQ ID No: 2 and an amplification template T with the sequence as shown in SEQ ID No: 3. The sequence of the hairpin probe H1 is as shown in SEQ ID No: 4, and the sequence of the hairpin probe H2 is as shown in SEQ ID No: 5. When the biosensor is used for detecting tobramycin, the method is simple, the practicability is good, the stability is high, the detection lower limit reaches 0.06 nM and is lower than that of the existing similar sensors, and the biosensor has wide application prospects in the fields of environmental monitoring and food safety.

The invention discloses micro-magnetic nondestructive testing sensors suitable for a concave curved surface. The micro-magnetic nondestructive testing sensors are used for acquiring micro-magnetic signals of a material with the concave curved surface. Each of two sensors is composed of a U-shaped electromagnet, a Hall element, a double-strand winding coil, a conditioning circuit board and a shell, but the shape of a magnetic core in the U-shaped electromagnet and the coupling mode of the tail end of the magnetic core and a curved surface are different. The magnetic core of the sensor suitable for the inner cylindrical surface has an ox horn shape, and the tail end of the magnetic core is coupled with a to-be-measured curved surface in a line contact mode. The magnetic core of the sensor suitable for the complex concave curved surface has a local boss shape, and the top of the boss is coupled with the curved surface to be measured in a line contact mode. Both sensors can measure tangential magnetic field intensity, magnetic Barkhausen noise, multi-frequency eddy current and incremental permeability signals in a material with the concave curved surface.

The invention provides an aero-engine electrical system line automatic detection device. The device comprises a detection mechanical part, a main control part and a detection circuit part; the detection mechanical part comprises a shell (6), the shell (6) is hollow, two single-pole multi-way mechanical switches (3) and two double-pole multi-way mechanical switches (4) are arranged in the shell (6), and the single-pole multi-way mechanical switches (3) and the double-pole multi-way mechanical switches (4) are fixed to a support (2) arranged in the shell (6). According to the aero-engine electrical circuit automatic detection device, a reasonable mechanical automatic switch is designed, the structure is simple and compact, and a multifunctional automatic detection circuit is designed in combination with electrical system detection experience. Automatic detection of an electrical system on the aero-engine test bed can be realized, good test precision and test efficiency can be ensured, and the application effect in aero-engine tests is good.

The invention discloses a multifunctional life detector with wireless transmission. The detector comprises a casing, an ultra wide band radar life detection unit, a wireless audio and video probe device, a wireless audio probe device, a controller and a bracing frame; the wireless audio and video probe device is movably arranged in a first probe accommodating box; the wireless audio probe device is movably arranged in a second probe accommodating box; the controller comprises a master control system, a touch screen and a battery pack; and the bracing frame comprises a micro rotation joint, support rods and balancing rods. The detector uses a wireless transmission manner, the detector is more portable and mobile, and the working distance of the multifunctional life detector is improved; andthe detector uses three detection means for detection, a detection structure is characterized by high precision, and the detector can adapt to different conditions.

The invention provides an improved piston detection machine. The improved piston detection machine comprises a feeding station, a detection station, a feeding manipulator, a carrying mechanism and a receiving station, wherein the feeding station comprises a lifting rack, a lifting part, a material frame clamping jaw part, a feeding conveying belt, an unpowered conveying line and a frame collecting conveying belt; the lifting part is fixed to the feeding channel position of the lifting rack and used for lifting and conveying stacked material frames to the position below the material frame clamping jaw part; the material frame clamping jaw part is connected to the lifting rack in a sliding mode and can clamp and convey the material frames to the feeding conveying belt, and the feeding conveying belt is fixed to the lifting rack and used for being matched with the feeding manipulator to clamp products for feeding; the unpowered conveying line is obliquely arranged, the high end of the unpowered conveying line is connected with the feeding conveying belt, and the bottom end of the unpowered conveying line is connected with the frame collecting conveying belt; and the frame collecting conveying belt is used for collecting the empty material frames. According to the improved piston detection machine, the material storage is increased, the time and the cycle period for replacing the material frames are shortened, and the universality is better.

The invention provides a shore hardness testing device and a shore hardness testing method and belongs to the technical field of material performance testing. The device comprises a test platform, a winding and unwinding unit, a hardness testing unit, a power unit, a first driving structure control unit, a second driving structure, a data acquisition unit and a control unit, wherein the top of which is provided with a test tabletop; the winding and unwinding unit is provided with a winding assembly and an unwinding assembly which are located on two sides of the test table board in the first preset direction respectively; the hardness testing unit comprises a testing frame and a shore durometer; and the shore durometer is arranged corresponding to the test table board and is movably connected with the test frame along the direction vertical to the test table board; the power unit comprises a first driving structure and a second driving structure; the first driving structure is used for driving the winding and unwinding unit to perform winding and unwinding actions; the second driving structure is used for driving the shore durometer to be close to the test table board for testing; the data acquisition unit is used for collecting test data of the shore durometer; and the control unit is in communication connection with the power unit. The method is carried out by adopting the device, continuous and automatic testing can be realized, testing efficiency is relatively high, and testing accuracy is relatively high.

An improved transmission assembly detection mechanism comprises a base, a worm detection assembly and a worm gear detection assembly are arranged on the base, a sliding rail is arranged on the base, and the worm gear detection assembly is arranged on the sliding rail in a sliding mode; the worm gear detection assembly is provided with a rotatable rotating disc, and the outer side of the rotating disc is provided with a worm gear positioning mechanism; and the worm detection assembly comprises a worm positioning seat, the worm positioning seat is provided with a vertical sliding rail which is vertically arranged, the vertical sliding rail is provided with an upper positioning block and a lower positioning block which are movable, and a worm needing to be detected is positioned between the upper positioning block and the lower positioning block. The improved transmission assembly detection mechanism is compact in overall structure, reasonable in design, convenient to operate and high in precision; in the detection process, the tooth meshing precision between a worm gear and a worm can be ensured through the rotation of a rotating disc, and the detection precision is improved; and the distance between detection positions is convenient to adjust, and the device can well adapt to detection of worm gears and worms of different sizes.