38 results about "Major minor" patented technology

The invention relates to the bridge detection technology, in particular to a dynamic detection method for a crack of a bridge bottom surface, which can be used for performing dynamic detection on the crack of the bridge bottom surface. The method comprises the following steps: S1, acquiring video images of the bridge bottom surface, and graying the color images; S2, performing binaryzation of gray level images; S3, screening a connected domain through area and the major-minor axis ratio of a minimum enclosing rectangle, and judging the connected domain meeting the following conditions a and b to be the crack; S4, drawing the minimum enclosing rectangle of a target area in an original drawing, so that the location of the crack can be visually observed, and the identification of the crack is realized. According to the dynamic detection method provided by the invention, the dynamic detection can be performed on the acquired video images, and therefore, the labor force is reduced, and the safety during a detection process is improved. Detection personnel can visually observe the location of the crack by marking the crack.

The invention provides a main and secondary clack tracker and the tracking method for a warning radar. The tracker comprises antennas 1-5, a servo platform 6, PIN attenuators 7-11, high-frequency amplifiers 12-16, frequency mixers 17-21, mid-frequency amplifiers 22-26, a local oscillation assembly 27, a digital receiver 28, wave detectors 29-30, a summing circuit 34, and a signal processor 35. The antennas 1-5 are mounted on the servo platform 6, and are respectively connected with the inputs of the PIN attenuators 7-11; the outputs of the PIN attenuators 7-11 are connected with the inputs of the high-frequency amplifiers 12-16; the local oscillation assembly 27 is controlled by the processor, and generates microwave signals with fixed frequency difference from the frequency of the incident signals, and is connected with the frequency mixers 17-21 together with the output signals of the high-frequency amplifiers; the outputs of the frequency mixers 17-21 are connected with the inputs of the mid-frequency amplifiers 22-26, the outputs of which are connected with the digital receiver 28 and the wave detectors 29-30; the outputs of the wave detectors 29-30, passing the summing circuit 34, are connected with the signal processor 35 together with the output from the digital receiver 28. By controlling the front ends of microwaves through the arrival signals of the front ends of microwaves and the signal processor, the invention combines EKF (extended Karman filtering) arithmetic with missile controlling value, capture concurrently the main and secondary clack of a radar, so as to attack a target precisely.

A digging machine for two purposes of teaching and training is prepared as enlarging area of pilothouse to erect two independent chairs and operation system in major-minor group, setting another two chairs at back of pilothouse for trainee, setting hydraulic control systems symmetrically for major-minor group and erecting control button at a side of teacher chair to control two-position and three-way solenoid valve for switching oil supply to major and minor group separately to let digging machine be controlled by teacher or by trainee.

The invention provides a particle shape based rock explosion breaking efficiency evaluation method. The method comprises that (1) explosion-broken stones at a plurality of positions of a blasting muckpile are shot in different scaling ratios; (2) an image processing technology is used to automatically identify the boundary of each explosion-broken stone so as to obtain the particle size and the major-minor axis ratio of each explosion-broken stone, and image identification results obtained at different positions and in different scaling ratios are combined; (3) acquiring particle size distribution and an average major-minor axis ratio of broken stones of the blasting muckpile based on an image processing result; and (4) an production efficiency index Q: Q = [1-(| G-Gs | / Gs)] * [1-(| S-0. 707 | / 0. 707)] of the explosion-broken stones is defined. According to the method, the degree that gradation of the produced explosion-broken stones satisfies standard requirements can be reflected, subsequent crushing and grinding efficiency of ores and the compactness of damming aggregates can be considered, and the economical efficiency of explosion-broken stone production can also be considered.

A superprecise linear cylindricity standard apparatus of major-minor dual track structure in monitoring and compensating type based on laser transparent and reflecting combination is disclosed by the present invention according to action rule of reference motion error of track linear motion to measured result of cylindricity measuring device with utilizing laser beam as physical reference.

This invention discloses a CNC controlled cantilever type system for automatically assembling positive, negative poles sheets, and the method therefore. It includes: (a), taking the piled-up sheets out of the box, and then the sheets being separated, tested and put on the place where the assembling will be proceeded; (b), opening isolation film roll and putting it in right direction, distributing film between positive and negative film; (c), placing positive and negative sheets alternatively between the isolation film, and compacting them into a pile on a bench; (d), counting the numbers of the positive and negative sheets; (e), major-minor workbenches grasping the whole pile of assembly, and then being reset; (f), winding the whole assembly with isolation film, and cutting-off the film; (g), removing away the film roll, adhering the adhesive tape onto said assembly, making it keep the geometric shape, finally removing them one after another.

The invention relates to a main and assistant cylinder combination engine which comprises a main cylinder, an assistant cylinder, a piston, a connecting rod, a crankshaft, an intake valve, an exhaust intake valve, an exhaust valve, a spark plug or a diesel high-pressure fuel injector and flywheel and the like. The main cylinder of the engine is injected with gas mixture, such as fuel and the like and burns and applies work, exhausts incompletely burnt high-temperature and high-pressure mixture gas into one assistant cylinder or a plurality of assistant cylinders to continue burn and apply work and finally the gas mixture are exhausted into the atmosphere after burning and applying work in the last assistant cylinder. Compared with the existing explosion engine, in the working cycle, the combination engine has prominent advantages of: 1 reducing the fuel consumption; 2 improving the effective thermal efficiency; 3 decreasing the pollutant emission and 4 simplifying the structure and reducing the manufacturing cost.

The invention provides a main and secondary clack tracker and the tracking method for a warning radar. The tracker comprises antennas 1-5, a servo platform 6, PIN attenuators 7-11, high-frequency amplifiers 12-16, frequency mixers 17-21, mid-frequency amplifiers 22-26, a local oscillation assembly 27, a digital receiver 28, wave detectors 29-30, a summing circuit 34, and a signal processor 35. The antennas 1-5 are mounted on the servo platform 6, and are respectively connected with the inputs of the PIN attenuators 7-11; the outputs of the PIN attenuators 7-11 are connected with the inputs of the high-frequency amplifiers 12-16; the local oscillation assembly 27 is controlled by the processor, and generates microwave signals with fixed frequency difference from the frequency of the incident signals, and is connected with the frequency mixers 17-21 together with the output signals of the high-frequency amplifiers; the outputs of the frequency mixers 17-21 are connected with the inputs of the mid-frequency amplifiers 22-26, the outputs of which are connected with the digital receiver 28 and the wave detectors 29-30; the outputs of the wave detectors 29-30, passing the summing circuit 34, are connected with the signal processor 35 together with the output from the digital receiver 28. By controlling the front ends of microwaves through the arrival signals of the front ends of microwaves and the signal processor, the invention combines EKF (extended Karman filtering) arithmetic with missile controlling value, capture concurrently the main and secondary clack of a radar, so as to attack a target precisely.

The invention discloses a multi-beam forward-looking sonar target detection method. Using the present invention can effectively detect the target. The present invention first adopts the median filter based on 3×3 window to remove the scattering noise in the image and improve the quality of the sonar image; The corrosion operation of the window kernel to do one erosion operation and the morphology operation can better remove the false target with a small area, that is, further reduce the noise, reduce the processing pressure and complexity of the recognition process; Remove false targets and improve detection accuracy.

The invention relates to a mechanical weighting mechanism of the electronic scale of dynamic grabbing bucket of the gantry crane, belonging to the technical field of weighting devices, wherein the pivot brackets of the transmission shaft of the major-minor hook wound rolls of the door machine are respectively connected with the bearing support and then are press-arranged on the upper surface of the flat sensor. The flat sensor is fixed on the underframe of the door machine room by a holder base. A wheel rib load cell is arranged at the lower terminal of the load limiter of the door mechanicalstructure, and the major weighting mechanism comprises the wheel rib load cell and the flat sensor. The mechanical weighting mechanism also comprises an automatic counting mechanism used for the weighing compensation of the amplitude modulation of the electronic scale of the grabbing bucket of the door machine and for the automatic counting mechanism of the speed testing, the high weighing compensation testing of the electronic scale of the grabbing bucket of the door machine. The mechanical weighting mechanism of the electronic scale of dynamic grabbing bucket of the gantry crane has the advantages that the problems of measure accuracy lost and extremely big repeated error of the prior art are solved, and the weighting mechanism has rapid, accurate, stable and reliable measure, the cost is saved for the harbor, and the work efficiency and the economic benefit of loading and unloading are improved.

This invention relates to an integral cleaner of coal-burning boiler smoke gas desulfuration, denitration and dedusting, which belongs to the environmental protection apparatus field. The device comprises major-minor reactor cluster, major-minor circulating pool, tank and the removing agent made up of lime slurry liquor, boiler blowdown, reinforcer and catalyst. The invention applies the integral project according to the smoke gas components and the product of removing reaction.

The invention discloses an optical fibre bicyclo redundancy controller for controlling local area network, comprising a major ring signal selector, a minor ring signal selector, a major signal repeater and a clock generator, wherein the controller is linked between a CAN interface, a major-minor ring optical fibre receptor and a major-minor ring optical fibre sender as a transmitting-receiving unit of the CAN node, the functions of the major signal selector and the minor signal selector are to dynamically forming an optical fibre working loop, the function of the major ring signal repeater is to realize a signal transfer between the CAN node and the optical fibre loop, and the clock generator is designed to provide a clock signal acquired by the operation of the circuit.