36results about How to "Small amount of modification work" patented technology

A car driver driving skill practice guiding an examination scoring device comprises a core plate and an interface baseplate connected with the core plate, wherein the core plate comprises a DSP digital processing unit, an embedded MCU micro-controller, a program storage, a data storage and interface connector plugins; the DSP digital processing unit and the embedded MCU micro-controller are taken as the center namely a hardware platform of the device; the DSP digital processing unit is responsible for processing digital audios and digital video so as to obtain state data required by movement locus of an examination vehicle and other information; the embedded MCU micro-controller provides an operation platform for an operating system; and in addition to the interface connector plugins, interfaces containing corresponding interface circuit devices are also arranged on the interface baseplate. A realization method for car driver driving skill practice guiding an examination scoring, by means of the device, can improve the reliability of measurement data of the actual position of the examination car. Therefore, the integration level of functions of the vehicle-mounted equipment is improved, and the purchase and the maintenance cost for the customer are lowered.

The present invention discloses one kind of turbo-fan engine includes at least one low pressure turbine and one fan in the tail of the engine to constitute one unit with the low pressure turbine and its design process. The engine structure comprising low pressure turbine and post-set fan has facilitated design, less rotor dynamic risk, less part number, raised operation reliability, lowered maintenance cost, favor to reducing axial size and overall weight and improving the thrust-weight ratio of engine. The present invention makes it possible to change available turbojet engine into turbo-fan engine.

The invention relates to introduction of a distributed optical fiber sensor and a tomographic imaging technology into monitoring of load distribution of a flexible thin plate structure and belongs tothe field of structural health monitoring. The introduction comprises the following steps: firstly, describing a bending mechanical model of the flexible thin plate structure by adopting a field theory method; secondly, constructing a mechanical model matched with a tomographic imaging method taking Radon conversion as a mathematical foundation; thirdly, adopting a sensor composed of two fiber bragg gratings which are mutually orthogonal in 0 degree/90 degrees; and according to strain measured by the sensor, calculating spatial second derivative of location deflection where the sensor is located, wherein a difference value of any two spatial second derivatives is namely the Radon conversion of a shear force field; fourthly, according to a principle that a monitored area is covered most widely while the most scanning lines are generated, constructing a sensor observation matrix; fifthly, according to the Radon conversion of the shear force field obtained in the step three, reconstructing the shear force field by adopting Radon inversion; and sixthly, solving divergence of the shear force field, wherein the divergence of the shear force field is namely the load distribution of the flexible thin plate structure.

The invention provides a method used for leading an IP multimedia sub-system to carry out dynamic position management on a user end (UE); the position management of UE is carried out by a dynamic position updating mechanism DLU method; the conversation behaviour of UE is led in a position updating process, namely, corresponding operation on register timer (RT) is added during the conversation process of UE without changing the register process in an IMS, thus reducing the generation frequency of periodic position updating request and the generation times of the periodic position updating request on the basis of extremely little changing quantity. Furthermore, when the UE roams from the home network to the visit network and IOS event or re-register CCRR or PRR event occurs, the method of the invention adopts a two-step position management mechanism TTLM method where home network and visit network are respectively registered and a dynamic position updating mechanism DLU method to carry out the position management on the UE. The method of the invention solves the defects of the prior art better, effectively reduces the load of the HSS and S-CSCF, reduces the transmission quantity of the position updating signals, and improves the utilization ratio of the network resource.

The invention relates to a new axial force measuring device and method based on a tension and pressure sensor. The axial force measuring device comprises an adjusting and fixing nut, a push-pull force meter, a dynamometer seat, a key, a bearing pedestal, an axial force wrapping device, a bearing group, a cylindrical roller bearing, a shaft, a shaft-end threaded piece and a locking nut. According to the invention, an axial force is separated from a radial force by utilizing the cylindrical roller bearing and an angular contact bearing group (or a conical roller bearing group), influence of the radial force on axial force measurement is avoided, and the axial force can be measured more accurately; fine adjustment of the position of the shaft in the axial direction is realized via the adjusting and fixing nut; the bearing group, the axial force wrapping device and the like converts the axial force of the rotating shaft into a static axial force, and the push-pull force meter realizes measurement in both push and pull directions; and the shaft-end threaded piece can increase the axial length of original equipment, and reduce the refitting workload of axial force measurement as possible. It is proved that the method can be used to measure the axial force accurately and conveniently.

The invention relates to the field of construction of photovoltaic power stations, and discloses a photovoltaic power station spiral steel pipe pile construction method. The construction method uses a total station for calibrating and adjusting pile positions on main axles after using GPS measuring equipment for quickly measuring and setting the pile positions, so that the positioning precision of the pile positions is guaranteed; a domestic general outdoor down-hole drill is refitted, so that the cost is low, the performance is reliable, and the safety is high; the propelling and rotating functions of the drill are used; and a self-made driving shaft is added at the front end of a revolving speed reducing box output shaft of the drill, so that a drill output shaft and a spiral steel pipe pile can be connected and disassembled more conveniently, the drilling construction requirements of the spiral steel pipe pile are satisfied, and the construction efficiency, reliability, safety and economy are greatly improved. The method is suitable for flat floors or mountains with slopes of not higher than 30 degrees, and is suitable for construction of the spiral steel pipe pile under the condition that the thickness of a remolded place soil layer is not smaller than a designed drilling depth.

The invention provides a method used for leading an IP multimedia sub-system to carry out two-step position management on a user end (UE); the position management of UE is carried out by a two-step position management mechanism TTLM method where home network and visit network are respectively registered; the register of the visit network is used for carrying out the position management on the registered UE which is arranged in the visit network; when the UE roams, the visit network determines whether to trigger the register process of the home network according to the change situation of the IP address of the UE, thus reducing the signalling load of the IMS network. Furthermore, when the UE roams from the home network to the visit network and call-in or call-out conversation IOS event occurs, the method of the invention adopts a two-step position management mechanism TTLM method and a dynamic position updating mechanism DLU method to carry out the position management on the UE. The method of the invention solves the defects of the prior art better, effectively reduces the load of the HSS and S-CSCF, reduces the transmission quantity of the position updating signals, and improves the utilization ratio of the network resource.

The invention belongs to the technical field of a hydraulic energy system design, and particularly relates to the field of the design of an electric pump hydraulic system in an airplane. Through installing and connecting the relevant accessories of the electric pump hydraulic system on an equipment bracket of a special hydraulic system in a cabin, the method builds the electric pump hydraulic system which can work for a long time. The electric pump hydraulic system uses alternating current which is produced on the airplane, and adopts three electric pumps as energy generation devices, two electric pumps normally work at the same time, the third electric pump is started when fault occurs, so the power requirement is ensured, and the working reliability of the system is also improved; under the premise of not changing the design and installation modes of the whole original hydraulic energy system, the method can improve the power output of the whole hydraulic system through adding a set of electric pump hydraulic energy system in the cabin; and moreover, the electric pump hydraulic energy system can reliably work for a long time, so the defect that only the electric pumps can be used as emergency energy in the past is overcome.

The invention discloses a target ship damage effect measurement system. The target ship damage effect measurement system comprises a measurement and acquisition unit, a data access exchange unit and adata storage and recovery unit, wherein the measurement and acquisition unit is used for measuring and acquiring a series of physical quantities reflecting impact vibration of a target ship and changes of the structure and the surrounding environment of the target ship and on-site video images in an offshore target practice test; the data access exchange unit is used for summarizing and distributing all paths of data transmitted by the measurement and acquisition unit; the data storage and recovery unit is used for storing and recording the data output by the data access exchange unit; and the data storage and recovery unit can be automatically separated from the target ship when the target ship sinks and float on the water surface, and meanwhile, the data storage and recovery unit is provided with a wireless positioning and signal sending device used for sending position signals of the data storage and recovery unit to the outside. The system has the advantages of being simple in design, reliable in test data acquisition, convenient and fast to recover and the like, and is particularly suitable for the target practice test of an overwater real ship.

The invention relates to the technical field of automobiles and discloses a brake apparatus preventing mistakenly stepping on the accelerator and an automobile. The brake apparatus preventing mistakenly stepping on the accelerator is mainly used in cases where drivers mistake accelerators for brakes and step on the accelerators. The brake apparatus comprises: a brake pedal which is rotationally arranged inside an automobile cab; a brake component which is driven by the brake pedal; and a rotational connecting rod which connects the brake component and the brake pedal. An emergency brake component is connected to the rotational connecting rod. The emergency brake component comprises a connecting rod, wherein two ends of the connecting rod are respectively hinged to the rotational connecting rod and a separating board inside the automobile cab. The middle part of the connecting rod is connected to a second hydraulic cylinder. The second hydraulic cylinder is connected to a third hydraulic cylinder through a hydraulic pipeline. The third hydraulic cylinder is electrically connected to a sensing device. In this way, by use of an additional emergency brake component which brings little refit workload and low cost, even a driver steps on an accelerator instead of a brake by mistake, the automobile can still be braked in time and thus traffic accidents are reduced. The brake apparatus and the automobile are easy for market popularization and have good market prospect.

The invention discloses an automobile seat massage ventilation system comprising a seat backrest main body (7), inflation bags (2) placed in front of the seat backrest main body (7), a seat skin (1) and an air guide pipe (6), wherein the inflation bag (2) is connected with an air pump (3) through an air guide tube (4); the seat skin (1) is provided with a plurality of air holes (1-1), covers the outside of the seat backrest main body (7) and covers the outside of all the inflation bags; one end of the air guide pipe (6) is connected with a fan (5), and the other end of the air guide pipe (6) is connected to a gap space between the seat skin (1) and the seat backrest main body (7). The invention also discloses a method for using the automobile seat massage ventilation system for massage andventilation. The automobile seat massage ventilation system is compact in structure, reasonable in layout, suitable for automobile front loading markets and afterloading markets, and very suitable for the automobile afterloading market due to the advantage that an existing automobile seat has small modification and assembly work amount.

The invention relates to a protection method for an asynchronous motor running in forward and reverse switching. An unbalance protection method for an asynchronous motor with forward and reverse switching operation, which includes a microcomputer integrated protection device, which includes: sending the auxiliary contact of the motor forward running control switch to a DI port of the microcomputer integrated protection device; motor reverse running control The switch auxiliary contact is sent to another DI port of the microcomputer integrated protection device; the microcomputer integrated protection device judges whether the motor is in the forward running state or the reverse running state through the input contact state; if it is judged to be in the forward running state, directly use the formula formula ( 3-3) Calculate the positive sequence and negative sequence currents; if it is judged to be in the reverse running state, use the following formula (5-1) to calculate the positive sequence and negative sequence currents. The present invention can complete the comprehensive unbalance protection for the forward and reverse switching operation motor by means of a microcomputer comprehensive protection device.

The invention provides a pit furnace and a using method thereof. The pit furnace comprises a tank body and a tank body seal head, the tank body seal head is fixedly arranged at the bottom of the tankbody, a lining seal head is arranged in the tank body seal head, a limiting device is arranged between the lining seal head and the tank body seal head, and the lining seal head is placed in the tankbody seal head through a fixing frame; and the fixing frame is fixedly arranged in the tank body seal head, and hoisting structures are evenly arranged in the circumferential direction of the lining seal head. The lining seal head is additionally arranged on the tank body seal head to perform anti-corrosion protection on the tank body seal head, when the lining seal head is corroded, only the lining seal head needs to be hoisted out of the tank body and replaced with a new lining seal head, the whole tank body does not need to be hoisted out, no influence on the tank body is caused, the tank body is not damaged, the modification workload is small, cost is low, the service life of the whole tank body is prolonged, and the equipment cost is reduced. A water jacket is arranged between two tank flanges, so that a sealing ring is prevented from being heated and deformed to influence the air tightness of the pit furnace.

The invention discloses a hydraulic driving system for a hub motor, wherein the engine (1) is connected with an input shaft of the transmission case (3) through the clutch (2); an input shaft of the power takeoff (4) is connected with a middle shaft of the transmission case (3); an output shaft of the power takeoff (4) is connected with an input shaft of the variable pump (14); the high-pressure oil outlet of the variable pump (14) is connected with the high-pressure oil inlet of the hydraulic control valve bank (6); the lower-pressure oil inlet of the variable pump (14) is connected with the lower-pressure oil outlet of the hydraulic control valve bank (6); the hydraulic control valve bank (6) is formed by a No.1 overflow valve (15), a No.2 overflow valve (16) and a three-position four-way reversing valve (16) with O-type meso-position function, the A port and B port of the three-position four-way reversing valve (16) in the hydraulic control valve bank (6) as the high pressure oil outlet and oil inlet are connected with the oil outlet and oil inlet of the two hub hydraulic motors (9) in same structure equipped on the two front wheels (13) through the high pressure pipe lines(7).

The invention discloses a CAP3 document form making method. The method comprises the following steps of A, firstly, performing online making through a CP4 page designer; b, converting the format into an InfoPath file format, and importing the file into a system; c, after the user stores the document, entering document list attribute setting; d, the system matches a corresponding control type according to the document element; e, permission, process, query statistics and authorization setting are entered; and E, finally, the foreground quasi-text calls the document made by the system. According to the method, the capacity of an existing CAP4 document designer is combined, the document importing step is ingeniously achieved through format conversion, dependence of third-party software is avoided, and meanwhile convenience of user interaction experience is improved.