72results about How to "Easy to install and test" patented technology

The invention discloses a method and a device for high-speed and accurate measurement of a tunnel section. The method comprises the steps as follows: overlapping a plurality of linear lasers end to end so as to obtain a large-angle tunnel section; synchronously acquiring laser profiles by a plurality of high-speed cameras, and carrying out image processing on the laser profiles; and carrying out model calculation from image coordinates to space coordinates so as to obtain a real coordinate of the tunnel section. The device comprises a laser scanning and distance measuring module, a photography measurement module and a data acquiring and processing module. According to the invention, the laser scanning and distance measuring technology and the photogrammetric triangulation technology are combined, the problem of difficultly processed data due to large data quantity in high-speed dynamic detection is solved, and the measurement requirements of high speed and high precision are satisfied. In addition, the device has the characteristics of compact structure and convenience in mounting and measurement.

The invention discloses a method for diagnosing the bridge arm IGBT open-circuit fault of an energy storage converter exteriorly. The method comprises the following steps: detecting a three-phase current on the alternating current side of the energy storage converter through a current transformer; calculating the fundamental component, the second harmonic component and the direct current component of the three-phase current through Fourier transform; respectively calculating the second harmonic contents of the three-phase current; when the second harmonic content of any phase in the three-phase current exceeds a preset threshold value, judging that an open-circuit fault occurs in an IGBT of the phase; when the open-circuit fault occurs in the IGBT of any phase in the three-phase current, if the direct current component of the phase is larger than zero, judging that the open-circuit fault occurs in an upper bridge arm IGBT of the phase; if the direct current component of the phase is smaller than zero, judging that the open-circuit fault occurs in a lower bridge arm IGBT of the phase. Based on the second harmonic detection of alternating current and the direct current component detection, the method can accurately and effectively diagnose the bridge arm IGBT open-circuit fault of the energy storage converter, and thus guaranteeing safe and stable operation of an energy storage system.

The invention discloses an in-service structure prestress in-situ detecting system and method. The detecting system comprises an adjustable signal source unit, a high-input impedance unit, an A / D switching circuit, a voltage testing processing display unit, a system parameter input unit, an impedance matching unit and an amplification unit. According to the system, a reinforcing steel bar is used as a conductor with an input end and an open-circuit terminal end, electromagnetic waves can be reflected on the terminal to form a standing wave, forming of the standing wave is directly related with the propagation characteristics of the electromagnetic waves in the reinforcing steel bar, the propagation characteristics are directly associated with the magnetic conductivity of the reinforcing steel bar, and the magnetic conductivity of the reinforcing steel bar changes along with the stress, so that voltage changes of electromagnetic waves residing in an endpoint are directly associated with the stress changes of the reinforcing steel bar, and are spread through a plurality of wave lengths in the reinforcing steel bar, the voltage changes of the standing wave can be amplified, finally the size of stress can be directly displayed on the voltage changes of the standing wave of the open-circuit terminal, the electrochemical expression of the absolute stress is achieved, and due to the detection of the voltage, the absolute stress borne by the reinforcing steel bar can be directly obtained.

The invention discloses a modularized magnetic resonance examination unit and a container modularized hospital with the same. The modularized magnetic resonance examination unit comprises a first box equipped with a magnetic resonant apparatus body and accessories and a second box having a magnetic resonance operating chamber; a first side of the first box is communicated with a first side of the second box. The modularized magnetic resonance examination unit and the container modularized hospital are quick to assemble for use with no influence from the external environment, are applicable to various means of transportation including modern vehicles such as maritime and land transportation vehicles and allow convenience of the extension of primary medical care.

The invention belongs to an aircraft strength testing technology, and relates to a loading device under the condition that a wing is largely deformed. The loading device for aircraft wing large deformation tests comprises a frame, an actuator cylinder, rolling wheels, roller wheel supports, starting bolts, a steel cable, guide wheels and a movable bearing beam. One end of the actuator is connected with the bottom of the frame while the other end is connected with the movable bearing beam. Two rolling wheel supports are respectively mounted at two ends of the movable bearing beam, and the bosses of the two rolling wheel supports respectively stretches into chutes in inner side surfaces of two sides, being close to the bosses, of the frame. The four guide wheels and the starting bolt are mounted on the movable bearing beam, two guide wheels are mounted at the top of the frame, after a ring at one end of the steel cable is connected to the starting bolt, the other end of the steel cable penetrates out from the top of the frame after sequentially winding around the guide wheels. The loading device provided by the invention is of an integrated frame structure, is convenient and safe to mount for test, high in control accuracy, and flexible in motion of the movable bearing beam and coordinating when in loading, and can meet the loading requirement on large deformation of the wing.

The invention discloses a waste-gas recycling valve multi-function test apparatus. The gas outlet of a burner is successively connected with a cooler, a continuous rotary valve, one end of an overflow valve and the inlet of a waste-gas recycling valve under test; the gas inlet of a vacuum pump is successively connected with one end of the overflow valve, a two-position three-way valve and a vacuum tube of the waste-gas recycling valve under test; the outlet of the waste-gas recycling valve under test is successively connected with an exhaust cooler, a counterbalance valve, a high-temperature two-position three-way valve and a mass flowmeter, and then is filled with atmosphere; the water inlet of the cooler is successively connected with a speed-adjustable water pump and a cooling water tank; and the water outlet of the cooler is connected with a drain pipe. The invention can be used to test the flux characteristics of a waste-gas recycling pump, the dynamic characteristics of a vacuum waste-gas recycling valve, the mechanical fatigue durability of a waste-gas recycling valve, the high-temperature waste-gas periodical impact fatigue durability of a waste-gas recycling valve, and the like.

The invention discloses a rubber stress cone interfacial pressure measuring device. The device comprises a metal pipe, two end sealing plates and a pressure testing meter, wherein multiple water outlets are formed in the metal pipe, the end sealing plates are installed at the two ends of the metal pipe, a water injection pipe is arranged on one of the end sealing plates, and the pressure testing meter is installed at the position of the water injection pipe. The invention further discloses a rubber stress cone interfacial pressure measuring method. The method comprises the steps of expanding a rubber stress cone and then arranging the rubber stress cone on the metal pipe in a sleeved mode, installing the end sealing plates at the two ends of the metal pipe, injecting water into the metal pipe through the water injection pipe at one end of the metal pipe, and reading the pressure value displayed on the pressure testing meter to obtain the interfacial pressure of the rubber stress cone when water flows out of the end of the rubber stress cone along the contact interface through the water outlets. According to the rubber stress cone interfacial pressure measuring device and method, measurement of stress generated during expansion of an annular sample is achieved, materials needed for measurement are easy to obtain, installation and measurement are convenient and fast, and no damage is caused to tested products.

The invention discloses a temperature control-type high suction unsaturated soil consolidation apparatus, and belongs to the soil test technology in the field of geotechnical engineering. A specimen to be measured (00) is included, and the apparatus is provided with a suction control device (10), a temperature control device (20), a pressure chamber (30) and a loading device (40). The specimen (00) is arranged in the pressure chamber (30); the pressure chamber (30) is placed in the temperature control device (20); the suction control device (10) is connected to the pressure chamber (30) through a pipe, and controls the suction of the pressure chamber (30); and the loading device (40) is connected to the pressure chamber (30), and provides pressure to the specimen (00). The invention adopts a relative humidity control technology to realize suction control in a high suction range; the high pressure loading device is used for the realization of the high pressure loading; and the temperature control device is employed to realize the temperature control. The apparatus has the advantages of simple principle of suction control, easiness to operate, convenience for installation and measurement and strong practicability, and is applicable to unsaturated soil test under the conditions of high pressure and controlled temperature and controlled humidity.

The invention discloses a test device for combining an exhaust gas recirculation valve with a cooler. Through a first three-way valve, a second three-way valve and a first four-way valve, a high-temperature gas device not only can be singly connected with a recirculation valve for exhaust gas to be tested, but also can be separately connected with a recirculation cooler for the exhaust gas to be tested, or can be jointly connected with the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested; then through a second four-way valve and a fourth three-way valve, a high-temperature gas device is connected to a flow meter for measuring the flow. Meanwhile, two additional switch valves are installed in a pipeline, so as to control the precedence sequence during the combination measurement of the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested. The test device can be used for not only separately testing the flow characteristic of the recirculation valve for the exhaust gas to be tested, but also separately testing the flow characteristic of the recirculation cooler for the exhaust gas to be tested, and meanwhile jointly testing the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested.

The present invention relates to an optical module high-and low-temperature test device. The optical module high-and low-temperature test device is used for testing an optical module. The optical module high-and low-temperature test device comprises a base and a test frame arranged on the base; the optical module is arranged on the test frame; a thermocouple probe is arranged above the test frame; the thermocouple probe contacts with the optical module arranged on the test frame; and the thermocouple probe is fixed through a support. According to the optical module high-and low-temperature test device, the thermocouple probe is fixed through the support, and therefore, after the optical module is fixed on the test frame, the thermocouple probe can directly contact with the optical module, and thus, installation and testing techniques are convenient; the thermocouple probe does not move, so that the problem of inaccurate test data caused by the change of the displacement of the thermocouple probe can be avoided. Compared with the prior art, the optical module high-and low-temperature test device is simple in structure.

The invention provides a camera module and electronic equipment. The camera module comprises a camera body module, a light sensor module and a flash lamp module, wherein the camera body module comprises a camera body, a first flexible circuit board and a first connector; the light sensor module comprises a light sensor, a second flexible circuit board and a second connector; the flash lamp module comprises a flash lamp, a third flexible circuit board and a third connector; the first flexible circuit board, the second flexible circuit board and the third flexible circuit board are integrated on a common flexible circuit board; terminals, which are connected with the flexible circuit boards, on the first connector, the second connector and the third connector are integrated in a first interface of a common connector; and terminals, which are connected with a mobile phone motherboard, on the first connector, the second connector and the third connector, are integrated in a second interface of the common connector. Installation can be completed once the second interface is connected with the motherboard of the electric equipment. No connector needs to be configured in test. Installation and test of the camera module are facilitated. Only one flexible circuit board and one connector are arranged, so that the size of the camera module is reduced.

A split cylindrical resonant cavity comprises an upper cylindrical resonant cavity body and a lower cylindrical resonant cavity body which are separated from each other. The upper cylindrical resonant cavity body comprises an upper-portion cylindrical cavity body with one end closed and one end open, a pair of upper-portion strip-shaped conductor flanges, an upper-portion coupling ring and an upper-portion coaxial transmission line, the upper-portion strip-shaped conductor flanges are arranged on the open end of the upper-portion cylindrical cavity body, the upper-portion coupling ring is arranged inside the upper-portion cylindrical cavity body, the upper-portion coaxial transmission line is connected with the upper coupling ring and penetrates the top wall or the side wall of the upper-portion cylindrical cavity body to connect the upper-portion coupling ring to the outside; the lower cylindrical resonant cavity body comprises a lower-portion cylindrical cavity body with one end closed and one end open, a pair of lower-portion strip-shaped conductor flanges, a lower-portion coupling ring and a lower-portion coaxial transmission line, the lower-portion strip-shaped conductor flanges are arranged on the open end of the lower-portion cylindrical cavity body, the lower-portion coupling ring is arranged inside the lower-portion cylindrical cavity body, the lower-portion coaxial transmission line is connected with the lower coupling ring and penetrates the top wall or the side wall of the lower-portion cylindrical cavity body to connect the lower-portion coupling ring to the outside.

A dielectric property testing method for dielectric materials includes connecting an upper coaxial transmission line and a lower coaxial transmission line with a vector network analyzer, enabling an upper cylindrical resonance cavity and a lower cylindrical resonance cavity to be aligned to each other and contact, stimulating a TE0np resonance mode in the cylindrical resonance cavity so that insertion loss of resonance peak in the upper cylindrical resonance cavity and the lower cylindrical resonance cavity is at the minimum, and measuring cavity resonance frequency and quality factor; arranging a dielectric substrate to be tested between an upper strip-shaped conductor flange and a lower strip-shaped conductor flange; stimulating the TE0np resonance mode in the cylindrical resonance cavities and adjusting a coupling ring to enable the insertion loss of the resonance peak in the upper and lower cylindrical resonance cavities to be the minimum, and measuring the prediction value of relative dielectric constant of the dielectric substrate to be tested; calculating dielectric property parameter value of the dielectric materials of the dielectric substrate to be tested.

The invention relates to a servo driver test platform. The platform comprises a test table, a starting panel, a servo driver unit, a test motor, a bracket and a floating test fixture for fixing the servo driver unit, wherein a working surface is arranged on an upper side of the test table, the floating test fixture is fixed on the working surface, the servo driver unit is arranged between the floating test fixture and the working surface, the starting panel and the test motor are both arranged on one side of the floating test fixture, the starting panel and the test motor are both fixed on theworking surface, and the bracket is fixed on one side of the test table and used for placing a test computer. The servo driver test platform can be applied to industrial robot driver prototype research and development tests, prototype reliability tests and batch tests, can effectively improve test efficiency and shorten the test period, is convenient to install, and is suitable for the test environment of batch production.

The invention provides a system for testing dielectric properties by using a strip line testing method. The system comprises laminated testing samples, a testing clamp, a pressure device, a first coupling device, a second coupling device, a first displacement table, a second displacement table, a vision amplification system, a vector network analyzer and a control processing device, wherein the testing clamp is used for clamping the laminated testing samples; the pressure device is used for applying pressure to the testing clamp so as to remove residual air in the laminated testing samples; the first coupling device is coupled with a first end of the testing clamp; the second coupling device is coupled with a second end of the testing clamp; the first displacement table is fixed with the first coupling device; the second displacement table is fixed with the second coupling device; the vision amplification system is used for assisting in coupling between the testing clamp and the first coupling device and coupling between the testing clamp and the second coupling device; the vector network analyzer is connected with the first coupling device and the second coupling device; and the control processing device is connected with the vector network analyzer.

The invention relates to an acceleration transducer in the field of MEMS (Micro-Electro-Mechanical System) transducers, in particular to a piezoresistive monolithic integrated four-beam tri-axial accelerometer which is used for solving the problems of complicated structure, low sensitivity and large inter-axis coupling in the tradtional piezoresistive monolithic integrated tri-axial accelerometer. The accelerometer comprises four elastic cantilever beams, a mass block and a supporting frame, wherein four sides of the mass block are supported and suspended at the central position of the supporting frame through one elastic cantilever beam respectively, the lower surface of the supporting frame is bonded with a glass substrate through an electrostatic bonding technology, 16 piezoresistors with same resistance are symmetrically and uniformly distributed at two ends of each of the four elastic cantilever beams and are connected to form three Wheatstone bridges respectively to detect acceleration signals in three axes respectively. The accelerometer provided by the invention has the advantages of simple structure, high sensitivity, low inter-axis coupling, high reliability, low cost, easiness for integrated processing and wide application range.

A method for testing dielectric properties by using a strip-line resonance method comprises the following steps of manufacturing laminated testing samples; clamping the laminated testing samples by using a testing clamp; uniformly applying pressure to the testing clamp by using a pressure device so as to remove residual air in the laminated testing samples; fixing a first coupling device and a second coupling device on a first displacement table and a second displacement table; connecting the first coupling device and the second coupling device to a vector network analyzer by using coaxial transmission lines respectively; optimally coupling the first coupling device and the testing clamp and optimally coupling the second coupling device and the testing clamp under the assistance of a vision amplification system; stimulating a strip-line resonator by using the vector network analyzer to generate resonance; transmitting resonance signals to the laminated testing samples by using the first coupling device and the second coupling device; receiving testing result data acquired from the laminated testing samples by using the vector network analyzer; transmitting the testing result data to a control processing device; and processing the testing result data by using the control processing device so as to determine the dielectric properties of the laminated testing samples.

The invention discloses an apparatus for the backside EMMI failure analysis. The apparatus comprises a PVC circuit board and a signal input and output pedestal; a transparent synthetic glass sheet is arranged in the center of the PVC circuit board, and a plurality of metal pins are arranged in the periphery of the synthetic glass sheet; circuit board metal pads are arranged at the four corners of the PVC circuit board respectively; each of the metal pins is connected with a jumper wire interface through a metal wire, and the jumper wire interface is connected with the four circuit board metal pads through metal wires respectively; and the signal input and output pedestal comprises a pedestal body, pedestal metal pads are arranged at the four corners of the pedestal body respectively, and the positions of the pedestal metal pads correspond to the positions of the circuit board metal pads. The apparatus allows the backside EMMI failure analysis to simply, rapidly and reliably realize the failure point positioning, and the positioning time of failure defects to be shortened to several hours from original several days. The invention also discloses a method for the backside EMMI failure analysis.

The invention relates to a case mold delivery mechanism in a continuous mold. A power plant, a cam, a slide rail and a follower are arranged in a platform, wherein, the follower is connected with the case mold; the case mold is arranged on a slide rail; the rotation of a power plant is capable of driving the cam to rotate, and the rotation of the cam is capable of driving the follower to move the case mold forward or backward; a plurality of sets punch die devices are arranged above the case mold; the case mold can be moved to below any punch die device for carrying out the punching operations. Through the design, the invention can replace a clamping transfer in the prior art, thus improving stability and accuracy of the production.

The invention provides a fluid filling and recovery device. The device comprises a first module; a second module and a connecting pipe; the first module comprises a first channel block, wherein the channel block is provided with a first fluid channel and a fluid connector connected with the fluid filling and recovery device, the first channel block is provided with a filling control valve and a recovery control valve, and the first fluid channel is communicated with the fluid connector and the filling control valve and is communicated with the fluid connector and the recovery control valve; the second module comprises a second channel block provided with a second fluid channel, the second channel block is provided with a connector used for installing a fluid ingredient separating device and is communicated with a connector used for installing the fluid ingredient separating device; the connecting pipe is externally provided with a first channel block and a second channel block and is communicated with the fluid channel and the second fluid channel through fluid. According to the fluid filling and recovery device provided by the invention, the arrangement of the channels can be simplified when all functions can be realized, and the space needed by the channels can be saved; furthermore, the fluid filling and recovery device is likely to be dismounted and detected.

The invention discloses a part air tightness detection device and a detection method thereof, which sequentially comprise from bottom to top: a base plate, a support rod, an upper connecting plate, a hydraulic action rod, and a tooling mechanism; wherein, the two sides of the base plate are arranged symmetrically There is a threaded hole for installing the support rod; a through hole is processed at the center of the bottom plate; the tooling mechanism includes: a mounting slot for detecting the outer contour of the workpiece, a tooling platform, and an overvoltage protection mechanism; the center position of the tooling platform is An air inlet installation hole is provided; the upper end surface of the tooling platform is provided with a detection workpiece outer contour installation card slot installation position; the detection workpiece outer contour installation card slot passes through the detection workpiece set on the upper end surface of the tooling platform The outer contour installation card slot installation position is fixedly installed on the upper end surface of the tooling platform; the overpressure protection mechanism includes: a hydraulic rod, and a pressure regulating valve; the pressure regulating valve is used to control the bearing pressure of the hydraulic rod .

The invention discloses a test board for a magnetic motor, and belongs to the technical field of tests for motors. The test board specifically comprises a rack, wherein a test head assembly and a protection arm assembly are arranged on the rack; the test head assembly is in drive connection with the motor fixed in the rack; a protection arm is arranged just above the test head assembly, and hinged with the rack. The test board disclosed by the invention is capable of meeting various tests on the performances of magnetic motors with different structures, high in universality, safe and reliable in test, and capable of increasing the test efficiency.

The invention provides a magnetic bearing-rotor system multifunctional experiment table which mainly comprises a base, a motor, a radial magnetic bearing, a radial displacement sensor, an axial displacement sensor, an axial thrust magnetic bearing, an axis trajectory sensor, an auxiliary bearing, a rotor, a disc, a thrust collar, a scale and housings. A motor stator, the radial magnetic bearing, the radial displacement sensor, the axial displacement sensor, the axial thrust magnetic bearing and the auxiliary bearing are mounted in different housings. All housings can be fixed on the base through a V-shaped trough and can randomly slide in the V-shaped trough. Position locking of the housing is realized through a T-shaped trough nut and a bolt. The disc and the thrust collar are mounted onthe rotor. The rotor can realize 6-freedom stable suspension and is driven by the motor to rotate. The axis trajectory sensor can randomly slide on the base. The magnetic bearing-rotor system multifunctional experiment table has remarkable advantages of modularization, integration, multiple functions, convenient mounting and testing, multi-point supporting, random sliding, cross-critical rotatingspeed, and capability of mounting the rotor to multiple discs.

The invention provides an active RFID temperature and humidity electronic tag comprising a CPU chip, a temperature and humidity sensor connected to the CPU chip, a 2.4GHz wireless module connected to the CPU chip, a 13.56MHz radio-frequency module connected by a 13.56MHz antenna to the CPU chip through a radio-frequency chip, a storage module connected to the CPU chip, and a power module connected to the CPU chip. Data is transmitted between enterprise or individual users, displayed, processed and networked through wireless transmission. Measurement and monitoring of food and drug storage and transportation are greatly facilitated. The cold chain temperature and humidity condition of products in the whole process of storage and transportation can be viewed. The safety problem of foods and drugs caused by cold chain breakage is avoided to the maximum.

The invention relates to an electric locomotive speed reducer assembly noise testing device and a testing method thereof. The electric locomotive speed reducer assembly noise testing device comprisesa rack, a speed reducer connecting mechanism, a half-shaft axle housing connecting mechanism and a load mechanism are connected with the rack, and the speed reducer connecting mechanism comprises a transmission mechanism which comprises a rotating base and a motor connecting flange base; the speed reducer assembly is pressed on the rotating base through a first driving air cylinder, the motor connecting flange base is connected with a driving motor in driving connection with the speed reducer assembly, the half-shaft axle housing connecting mechanism comprises an axle housing body, an upper axle housing body connecting oil filling port, a lower axle housing body connecting oil filling port and an oil drain valve, two half shafts penetrate through the two sides of the axle housing body, andthe axle housing body is further connected with a second driving air cylinder. The load mechanism comprises a sliding shaft, the two ends of the sliding shaft are connected with a rotating shaft anda third driving air cylinder respectively, the rotating shaft is connected with a disc brake disc, and the sliding shaft matching the disc brake disc is connected with disc brake pincers. The electriclocomotive speed reducer assembly noise testing device and the testing method thereof are used for testing noise generated when the speed reducer assembly runs, and testing installation and operationare simple.

The invention discloses a building insulation board detection device comprising a machine body, a display screen is arranged at the lower end of one side of the machine body, and a control panel is arranged on the outer surface of one side of the display screen. A numerical value of the device is set through a rotary button, then test operation is performed through an operation button, an operator can observe test data through the display screen so as to record the test data, and a charging device can place the equipment on a charger for direct charging, transmit power through a charging wire, connect a charging chassis for conversion and finally contact a charging sensor. The advanced induction technology is adopted on the sensor, charging is convenient, a multi-hole socket device can provide a plurality of connectors during use, different test heads can be conveniently installed and tested, a test extrusion device can ensure the high-efficiency stability of the test during the test, and the damage of the test guide pin caused by the test is reduced. And a test guide pin can be directly inserted into the insulation board for testing, so that the working efficiency is greatly improved, and the practicability is realized.

The invention discloses a processing and developing process of an intelligent automatic gearbox. The processing and developing process of the intelligent automatic gearbox comprises the following operation steps that S1, a blank is casted; S2, a bottom plane after rough milling is used as a rough reference surface, and during rough milling, a filler block is fixed to a gearbox body blank; S3, a bottom plane after finishing milling is used as the finishing reference surface, and during finishing milling, a filler block is fixed to a gearbox body blank; S4, hole processing is carried out; S5, front steps on the front of the gearbox body blank is subjected to rough milling and semi-finish milling in sequence; S6, the bottom surface of the gearbox body blank is drilled and tapped to make threaded holes; and S7, fine boring is carried out on shaft holes; S8, oiling and sealing are carried out after the cleaning inspection is qualified. The small deformation of a gearbox body under pressurecan be effectively avoided by additionally arranging the filler block on the inner side of the processing surface to effectively ensure the processing accuracy of the gearbox body. The method of simultaneous processing on two sides is adopted to avoid processing accumulation of errors when planes are changed.