93results about How to "Realize multi-point measurement" patented technology

The invention provides a non-contact multipoint high-frequency dynamic bridge deflection detection method. N laser range finders are arranged below the bridge; a reflection target is arranged at a pier; when the bridge does not suffer from additional load, the laser range finder is opened, a distance L1 of each laser range finder when the bridge does not suffer from additional load is measured, and deflection yi at the bridge position corresponding to each laser range finder is calculated; within a certain measurement range, the n laser range finders are repeated at a time interval of mu second, one end point of the bridge serves as a coordinate origin O, the longitudinal direction of the bridge is X axis, the downward direction perpendicular to the bridge surface is Y axis, an X-coordinate xi of a detection point and the deflection value yi measured in real time are inputted, and integrated coordinate data are fitted to a deflection curve. Non-contact measurement can be realized, and compared with the traditional mode of manually using a dial indicator for detection, remote operation and control can be realized, automation can be realized, and the measurement is more convenient.

The invention discloses a testing device for testing creeping property of a high-temperature integral flanged joint, which includes a flanged joint, a heating and temperature control system, a worm gear transmission mechanism, a deformation measurement system, a supporting structure, a medium given system, a computer image processing system and a medium sealing system. The testing device for testing the creeping property of the high-temperature integral flanged joint provided by the invention has the advantages of compact structure, simplicity in operation, small occupied area and low cost, and solves the problem that the creeping properties of all the elements in the vacuum flanged joint cannot be measured at present.

The invention discloses a cutter with a function of decoupling the temperature of a turning area. The cutter comprises a turning cutter bar and a blade arranged on the turning cutter bar, wherein two test micro blind holes are formed in the blade and used for accommodating high temperature fiber gratings; one blind hole is positioned under the front surface of the cutter; the other blind hole is positioned in the blade, and the bottom of the blind hole tightly leans against a cutter point; the axis of one blind hole is perpendicular to a cutting edge, the distance between the bottom of the blind hole and the cutting edge is 0.2 to 0.8mm, the distance between the blind hole and the front surface is 0.5 to 1.2mm, and the blind hole deviates from the cutter point by 1 to 1.5mm and is used for testing the temperature distribution of a cutter scrap contact surface; and the distance between the other blind hole and the external surface of the cutter point is 0.2 to 0.5mm, an included angle between the axis of the blind hole and the front surface is 20 to 30 degrees, and the blind hole points to the inside of the blade. The cutter can realize multi-point measurement in the turning micro area, is high in dynamic property, micro area test property, dynamic temperature display property and test accuracy, and can well decouple heat generated in a cutting micro area.

The invention discloses an observation method of foundation settlement based on liquid level difference. A folding hose is buried in the foundation, and a liquid level sensor is placed in the hose and is led out through a lead wire to be connected with a liquid level observation instrument on one side of the foundation. One end of the hose is connected with a one-way valve and fixed on the surface of the foundation, the other end of the hose is connected with a liquid storage tank on one side of the foundation, and liquid is filled in the liquid storage tank. The liquid level sensor in the hose is utilized to measure the change of the liquid level difference, then the liquid level difference between a settlement point where the liquid level sensor is located and the liquid in the liquid storage tank can be converted out, and then the settling volume of the foundation can be calculated out. Additionally, after the measurement, the senor can be completely pulled back for recovery through a soft rope reserved in the hose. The observation method of the foundation settlement based on the liquid level difference is simple in structure, convenient in operation, accurate in measurement, capable of cyclically utilizing the liquid level sensor and low in monitoring cost.

The invention provides a non-contact optical fiber device and method for measuring flows. The device comprises a sensing fiber mounted in a pipeline. One end of the sensing fiber is connected with a grating, an optical fiber, a circulator and a light source sequentially, and the other end is connected with the grating, an interferometer and the circulator. The method includes connecting the grating to two sides of the sensing fiber to form a sensing unit, allowing light emitted from the light source to enter the sensing unit from the front end, converting monitoring vibration acceleration into monitoring optical phase by the grating interferometric technique, performing demodulation processing on phase information by the phase carrier technique PGC (programmed gain control), and realizing non-contact flow monitoring. The device is free of contacting with fluid, interfering with the flow field and electrical measurement, safe and reliable, high in adaptability, and free of being interfered by electromagnet; continuous remote measurement is realized, influences by light fluctuation and temperature changes are eliminated, throttle pressure loss rarely occurs, energy is saved, flows of corrosive fluids can be measured, multi-point measurement can be realized, and the device can be applied in measurement processes with various flows.

The present invention relates to a three-dimensional fiber Bragg grating wind speed and direction sensor and system. The sensor comprises a base and three groups of sensing devices mounted on the base. The three groups of sensing devices are arranged on the three surfaces of the base according to a space rectangular coordinate system. The system includes a three-dimensional fiber Bragg grating wind speed and direction sensor, a fiber coupler, a wavelength demodulation device, a broadband light source and a module operation device, the three-dimensional fiber Bragg grating wind speed and direction sensor is connected with the fiber coupler through an optical fiber, the fiber coupler is connected to the broadband light source and the wavelength demodulation device, and the wavelength demodulation device and the module operation device are connected. The invention adopts a non-rotating structure and an independent temperature compensating grating. The sensor has the advantages of small volume, simple structure, high measuring precision and good stability. In addition, the sensor can measure the wind speed and the wind direction at the same time, and a plurality of sensors are arranged to form a measuring network, to achieve multi-point measurement. In addition, the sensor achieves seamless access with equipment based on fiber grating technology.

The invention provides a fiber ring-down loop time division multiplexing sensing system. The system comprises a plurality of fiber ring-down loops, a light source, a light source driving module, a pulse generator, a signal acquisition and processing device, a photoelectric converter and a temperature control module, wherein, each fiber ring-down loop comprises an input coupler, an output coupler and a sensing probe, the light source driving module receives a pulse signal of the pulse generator and controls the light source to output light pulse, pulsed light enters into each ring-down loop and changes into a ring-down pulse signal respectively, ring-down pulse signals return to the photoelectric converter according to a time sequence, one side of the signal acquisition and processing device is connected with the pulse generator to obtain a synchronization signal, the other side of the signal acquisition and processing device is connected with the photoelectric converter and carries out processing and storage on an electric signal outputted by the photoelectric converter, and the temperature control module controls an operating temperature of the light source and feeds back the operating temperature to the signal acquisition and processing device simultaneously. According to the system, multi-point and multi-parameter real-time measurement in a severe environment can be realized.

The invention relates to a device for detecting fan strain on line based on an optical fiber grating, and belongs to the field of fan blade detection in the wind power generation industry. The device comprises a broad band light source, a circulator, an optical fiber grating strain sensor, an optical fiber grating demodulation module, a data processing module, a warner, a sliding ring, a ground receiving module and a displayer. According to the device, the strain quantity of a blade can be acquired by demodulating and calculating the variation quantity of a central wavelength of the optical fiber grating according to the linear relation between the variation of the central wavelength of the optical fiber grating and the variation of the blade strain, so that real-time and on-line detection can be realized. The device can be used for detecting the strain of a plurality of points of the fan blade in real time on line by using a wavelength division multiplexing technology and has the characteristics of small volume, capacity of marking wavelengths, on-line detection, long-term stability and the like, and is not interfered with electromagnetism.

The invention discloses a novel Pelteobagrus fulvidraco transportation method based on intelligent control. According to the invention, Pelteobagrus fulvidraco is narcotized with anesthetics and placed into a live fish box; the interior of the box body of the live fish box comprises a water body and a boat body floating on the surface of the water body; the interior of the boat body is provided with a core control member which is connected with dissolved oxygen, pH and temperature sensors arranged in the interior of the water body and with vibration, noise and air-quality sensors which are arranged at the exterior of the water body and used for capturing environmental information of the interior of the live fish box in real time; the interior of the water body is also provided with a temperature control device; the boat body is provided with a negative-ion air purifying device; in addition, a terminal device is arranged and used for receiving and processing signals of sensors and controlling the boat body to move; thus, accurate control and adjustment of the quality of water in the transportation process of the Pelteobagrus fulvidraco is realized through evaluation of the transportation water quality of the Pelteobagrus fulvidraco by artificial neural network modeling. The method provided by the invention is unique and practical, realizes reliable and comprehensive informationacquisition, thereby guaranteeing the long-distance transportation safety of the Pelteobagrus fulvidraco.

The invention discloses a civil engineering material deformation experimental instrument suitable for multipoint measurement. The instrument comprises a metal barrel, an upper porous plate and a lower porous plate, wherein the interior of the metal barrel forms a columnar cylinder. The instrument is characterized in that a vertical support beam is fixed on the metal barrel; a support beam is arranged on the vertical support beam; a spring contact is arranged on the support beam, and consists of a contact rod, a shell, a cross rod and a resetting spring; the shell is movably fixed on the support beam through a fixing sleeve; the contact rod longitudinally penetrates through the shell; the cross rod is fixed together with the contact rod; a level gauge for marking whether the support beam is in a horizontal state or not is arranged on the support beam. According to the experimental instrument, the spring contact moves on the support beam to realize the multipoint deformation measurement of an experimental material; the experimental instrument has the advantages of simple structure, data accuracy and convenience in measurement, the size of the experimental instrument is effectively reduced, and the experimental instrument can be conveniently placed in a conventional water bath for heating to keep stable experimental conditions.

The invention relates to the field of bearing detection, in particular to an automatic measuring device for the axial clearance and the assembly height of double-row bearings. The automatic measuringdevice comprises a fundamental base, a workpiece transport passage, a walking beam assembly, a double jacking assembly and a measuring assembly. The workpiece transport channel, the walking beam assembly and the double jacking assembly are mounted on the fundamental base, a workpiece bearing is driven to move and be positioned on the workpiece transport passage by the walking beam assembly, the double jacking assembly comprises an inner ring jacking mechanism and an outer ring jacking mechanism, the inner ring jacking mechanism is abutted against the lower end of the inner ring of the workpiece bearing during detection, the outer ring jacking mechanism is abutted against the lower end of the outer ring of the workpiece bearing, the measuring assembly is disposed above the double jacking assembly, and the upper end of the workpiece bearing is in contact with the measuring assembly during detection. The automatic measuring device can complete the accurate measurement of the axial clearance and the assembly height parameters in one time, the whole process is automatically controlled, and the on-line culling function is provided for the unqualified workpieces, which is convenient for the worker to perform offline maintenance.

The present invention discloses a multi-flexible plate vibration detection device and method. The device comprises 2N+1 flexible plates, a linear travel mechanism, a vibration detection mechanism anda control module, one of the flexible plates is located at the central position, the other flexible plates are symmetrically arranged at two sides of the one of the flexible plates, the flexible plates are perpendicular to a horizontal plane and hinged together through a hinge to form a flexible hinge plate, and the flexible hinge plate is arranged on the linear travel mechanism; the vibration detection mechanism comprises two slide projectors, two sets of binocular vision systems and 2N acceleration sensors, each slide projector is configured to project mark points on the flexible hinge plate, each set of the binocular vision systems is configured to detect the mark point area of the corresponding slide projector on the flexible hinge plate, and each acceleration sensor is arranged on thecorresponding flexible plate. The multi-flexible plate vibration detection device and method can reflect the global features of the flexible hinge plate and provide a condition for the active vibration control based on the multiple sensors.

The invention discloses a multi-flexible-hinged-plate rotating vibration detection device and method, and the device comprises two flexible hinged plates, a rotating mechanism, a vibration detection mechanism and a control assembly. The two flexible hinged plates are symmetrically disposed on the rotating mechanism, and each flexible hinged plate comprises 2N+1 flexible plates which are hinged together, wherein each flexible plate is provided with a plurality of mark points through pasting. The vibration detection mechanism comprises two groups of binocular vision systems and two groups of acceleration sensors, wherein the two groups of binocular vision systems, the two groups of acceleration sensors and the two flexible hinged plates are corresponding in a one-to-one manner. Each binocular vision system is used for detecting a mark point region on the corresponding flexible hinged plate, and each acceleration sensor is disposed on the corresponding flexible hinged plate. The control assembly is connected with the rotating mechanism, the binocular vision systems and the acceleration sensors. The device effectively eliminates the impact on a vibration control effect from other uncontrollable factors, and provides conditions for the research of the control of the active vibration based on multiple sensors.

The invention relates to the technical field of fiber grating sensing, in particular to a multi-parameter large-capacity sensing system comprising a narrow-line-width pulse laser, an erbium-doped optical amplifier, a circulator, a matching interferometer, a reflected light detecting unit, and a computer that are connected successively by a fiber. The circulator is connected with an eccentric fiber; and an ultra-low reflectance grating array is engraved on the eccentric fiber. According to the system based on the reasonable structure, the ultra-low reflectance grating array of the eccentric fiber is used as a sensing unit to obtain a strong evanescent field, so that the system detection sensitivity and the signal-to-noise ratio are greatly improved; with the phi-OTDR technology, the Rayleigh scattering light is amplified effectively and the location of the signal point is determined by the delay between the detection input light and the received light, thereby realizing multi-point measurement; and on the basis of the coherent detection technique, the phase change of the interference signal between the adjacent eccentric ultra-low reflectivity gratings is detected under the effect of the external signal to demodulate the external signal, thereby realizing multi-parameter large-capacity detection on the temperature, vibration and strain.

The invention discloses a flow measurement system capable of adjusting a measuring position. The flow measuring system capable of adjusting the measuring position comprises a measurement device with a telescoping mechanism, a high static tube cavity, a low static tube cavity, a differential pressure transmitter and an analysis display device, wherein the measurement device with the telescoping mechanism includes main measurement elements, a fixing flange and a servo mechanism; the main measurement elements are connected with the servo mechanism; the servo mechanism is installed on the fixing flange. The main measurement elements are connected with the high static tube cavity and a low static tube cavity which are fixed on the fixing flange through a pressure tapping hose, the high static tube cavity is connected with a high static input end of the differential pressure transmitter, the low static tube cavity is connected with a low static input end of the differential pressure transmitter, the differential pressure transmitter is connected with a differential pressure signal which is output to an analysis display device, and the analysis display device gives the measuring value of air speed. The flow measurement system has the advantages that the measurement positions of the main measurement elements can be adjusted, more measurement elements can be arranged, so that the multi-point measurement can be realized.

The invention discloses a glass fiber / epoxy resin composite material substrate type fiber bragg grating sensor and a manufacturing method thereof. The sensor comprises a glass fiber / epoxy resin composite material substrate, at least one fiber bragg grating loaded on the glass fiber / epoxy resin composite material substrate and dry glass fiber cloth covering above the fiber bragg grating. The dry glass fiber cloth is infiltrated by liquid epoxy resin. The liquid epoxy resin is filled between the dry glass fiber cloth and the glass fiber / epoxy resin composite material substrate so as to carry out curing molding. In the invention, interlayer interface intensity of the fiber bragg grating sensor is guaranteed, based on that, a series of defects existing in a traditional fiber bragg grating sensor are overcome; the fiber bragg grating sensor can accurately measure a temperature and strain of a measured structure component; disadvantages of a domestic current externally-bonded fiber bragg grating sensor are avoided; and simultaneously good economic benefits are possessed.

The invention relates to the technical field of nuclear reactor equipment producing and machining, and discloses a reactor internal outlet pipe nozzle grinding and measuring device and a measuring and grinding method. An outlet pipe nozzle is and a pressure container cylinder are mounted in a matched manner, a cylindrical face is arranged on the end face of the outlet pipe nozzle, the measuring device comprises a frame, the frame is fixed to the outer side of a reactor internal cylinder, an adjusting pad is arranged on the periphery of the frame, the frame is locked on the outlet pipe nozzle through the adjusting pad, linear guide rails are arranged on the left side and the right side of the frame, and are located on the outer side of the outlet pipe nozzle, the linear guide rails are parallel to the axis of the reactor internal cylinder, a positioning ruler is arranged on the guide rails in a sliding manner, positioning holes are formed in the positioning ruler, and a depth gauge is used for measuring the depth of the outlet pipe nozzle through the positioning holes so as to determine the grinding amount. The measuring basis is determined through the depth gauge, point grinding amount measuring of the cylindrical face is achieved, the measuring process is simple, and the measuring and grinding efficiency is improved.

The invention, which belongs to the technical field of optical fiber optical measurement, specifically discloses a pile-based soil settlement monitoring system based on the optical fiber optical measurement technology. The system comprises a signal demodulation part, a network topology structure, a signal detection part and a measurement part. The signal demodulation part includes a broad spectrumlight source, a first connecting fiber, a second connecting fiber, a first fiber circulator, an adjustment arm, a data acquisition card and a computer. The network topology structure is formed by anoptical switch or a multi-channel divider and is formed by connection of a tree type structure. The signal detection part includes a plurality of detecting units; and each detection unit includes a second fiber circulator and a photoelectric detector. The measuring part includes a plurality of identical pile-based settlement sensors; and each pile-based settlement sensor includes a second opticalsplitter, a second self-focusing fiber collimator, a second reflector, a protective casing, a settling ring, and a pile. With the disclosed settlement monitoring system, problems that the measurementhas the error and real-time monitoring can not be realized in the prior art are solved.

The invention belongs to a multipoint scalable thermoelectric couple, comprising an electrical connector, a protection sleeve and a thermometric element; the upper end of the protection sleeve is fixedly arranged on the electrical connector, the thermometric element is fixedly arranged on the electrical connector and placed inside the protection sleeve; wherein the protection sleeve is composed of an adjusting pipe and a measuring pipe on the same axis; the upper end of the adjusting pipe is fixedly arranged on the electrical connector and the outer wall thereof is provided with screw threads; a swivel bearing is coaxially arranged at the outer wall and the upper end of the measuring pipe; an adjusting screw nut is coaxially fixed at the outer wall of the swivel bearing, the adjusting screw nut and the adjusting pipe are meshed and connected with each other by screw threads. In the invention, the position of the thermometric element in the protection sleeve can be randomly adjusted and replacement of measuring cores is convenient, measuring accuracy and safety are higher, vibration resistance is better, therefore the thermoelectric couple of the invention is a multipoint scalable thermoelectric couple which features long service life.

The invention relates to a multi-point intelligent lifting and positioning cable stress detection instrument, which comprises a frame body sheathed on a stay cable of a cable-stayed bridge; and at least two sensor pushing mechanisms which comprise a brush DC motor, a No.1 telescopic push rod, a No. 2 telescopic push rod, a rotatable type connecting end, a vertical adjustment rod and a sensor fixing support. The brushed DC motor drives the screw rod to rotate and achieves the telescopic function through the engaged transmission between the internal thread of the No. 1 telescopic push rod and the screw rod; the No. 1 telescopic push rod drives the No.2 telescopic push rod to rotate so as to achieve the telescopic function; and the sensor fixing support is fixedly mounted at the end of the vertical adjustment rod, and the sensor fixing support is provided with a sensor chip. The driving mechanism comprises a driving motor and a driving wheel, wherein the driving motor drives the driving wheel to roll upwards and downwards along the cable-strayed bridge. According to the invention, the frame body is provided with at least two sensor pushing mechanisms, which cooperate with the sensor chip mounted on the frame body to realize simultaneous multi-point measurement and to make the cable stress detection data more accurate.

The invention discloses a dual-spreading solar wing vibration measuring device and method. The device comprises a dual-spreading solar wing, a vibration excitation mechanism and a vibration detectingmechanism; the vibration excitation mechanism is connected with the dual-spreading sun wing and is used for exciting the dual-spreading solar wing to generate vibration; the vibration detecting mechanism comprises two sets of binocular vision systems and two trusses; the two trusses are arranged in parallel from front to back; the two sets of binocular vision systems and two trusses are in one-to-one correspondence; and each set of binocular vision systems are arranged on the corresponding truss; the two sets of binocular vision systems are used to detect vibration detection marker point areason the front and rear upper surfaces of the dual-spreading solar wing. The two sets of binocular vision systems are arranged on two trusses arranged in parallel from front to back, the two sets of binocular vision systems are used to detect the vibration detection marker point areas on the front and rear upper surfaces of the dual-spreading solar wing, non-contact measurement of the dual-spreading solar wing can be achieved, and more accurate vibration information of the dual-spreading solar wing can be obtained.

The invention discloses a simulation device for river bed dynamic change under flood action. The simulation device comprises a river channel simulation groove; a dam body is arranged in the groove; anelectric gate is arranged on the dam body; river channel simulation groove on the upstream portion and the downstream portion of the dam body is divided into a water storage area and a flood simulation area; a sand layer is laid at the bottom of the flood simulation area; a plurality of high-frequency pressure sensors are mounted on the bottom wall, under the sand layer, of the river channel simulation groove; laser devices are arranged directly above all the high-frequency pressure sensors in a one-to-one mode; and an electric control device calculates the real-time thickness of the corresponding sand layer according to a real-time thickness calculation formula of the sand layer. The invention also discloses a multipoint real-time monitoring method adopting the simulation device for river bed dynamic change under flood action. Water and the sand layer are not interfered, the side wall of a water tank does not need to be transparent, multi-point measurement can be achieved, and the high-frequency pressure sensors are mounted on the bottom wall needing to be monitored points of the river channel simulation groove and the laser devices correspondingly, so that measurement results are accurate.

The embodiment of the invention discloses array substrate maintenance equipment and an array substrate maintenance method, relates to the technical field of the production of liquid crystal display panels, and can improve the energy detection efficiency of laser generated by equipment. The array substrate maintenance equipment provided by the embodiment of the invention comprises a laser generator, and an optical attenuator, a light beam expander, a light path slit and an objective lens arranged on a laser path in turn, wherein a rotary reflecting mirror is respectively arranged between the laser generator and the optical attenuator, between the optical attenuator and the light beam expander and between the light path slit and the objective lens; and the laser reaches a laser energy measuring probe arranged in the array substrate maintenance equipment after being reflected by the rotary reflecting mirrors. The array substrate maintenance equipment and the array substrate maintenance method provided by the invention are suitable for maintaining a thin film transistor-liquid crystal display (TFT-LCD) array substrate.

In the invention, 12 pieces of wheel axle recognition sensor (WARS) of optical fiber grating (OFG) are adopted as sensing part. LED is as light source. Using optical power meter carries out signal detection. The sensing part, the light source, and the optical power meter are connected through optical fiber to constitute an integrated wheel axle recognition system. According to certain combination mode, WARSs are cascaded to form 4 pieces of independent optical path. When wheel axle passes through WARS, change of Bragg reflection wavelength of OFG in corresponding WARS takes place; and the change changes reflected light intensity of entire optical path. Based on number of optical path, where light intensity changes, the system can determine number of tyre. Advantages are: simple structure, stable, accurate recognition, anti electromagnetic interference etc. The invention is applicable to weighting and charging system, over loading transportation management system etc. in toll station.

The invention discloses an intelligent quality monitoring device for a bearing ring. The intelligent quality monitoring device comprises a case, a support frame fixed on one side of a case body, a motor for driving a turntable at the top of the case to rotate, two measuring devices fixed on the turntable up and down through the support frame, and a display screen and a controller fixed on the support frame, wherein a plurality of groups of clamping devices are arranged in the center of the top of the turntable; each measuring device comprises a resistance box and a caliper; each caliper comprises a main ruler, a fixed auxiliary ruler fixed at one end of the main ruler, a movable auxiliary ruler moving along the main ruler through a sliding sleeve, and a spring fixed between the fixed auxiliary ruler and the movable auxiliary ruler; length scales are arranged on the main ruler and the sliding sleeve respectively; the main ruler is fixed on a shell of the resistance box; the top end of the sliding sleeve is fixed on a sliding sheet of a sliding rheostat in the resistance box; and the resistance box, the motor and the display screen are electrically connected with the controller respectively. The intelligent quality monitoring device is simple in structure, and can quickly and accurately test the inner diameter and the outer diameter of the bearing ring at multiple points.

The invention provides a gas pressure monitoring system based on an optical fiber white-light interference measuring technology. The system comprises a white-light interference demodulator, an opticalfiber topology network and a gas pressure sensor set, the white-light interference demodulator comprises a white-light light source, a first optical fiber circulator, a second optical fiber circulator, a first optical fiber semi-reflecting mirror, a reflector, a first self-focusing lens, a stepping motor, a data acquisition card, a photoelectric detector and a computer, the optical fiber topologynetwork is formed by connection of optical switches or multiple channels of shunts in a tree-shaped structure, the gas pressure sensor set comprises a plurality of same gas pressure sensors, and eachgas pressure sensor comprises an elastic film, a reflective coating, a sensor housing, standard gas pressure inert gas, transparent glass, a second optical fiber semi-reflecting mirror and a second self-focusing lens. According to the gas pressure monitoring system based on the optical fiber white-light interference measuring technology, the gas pressure in a pressure container is monitored by employing the optical sensors so that the system is more applicable to pressure monitoring of gas pressure containers in severe conditions.

The present invention relates to a distribution box distribution transformation terminal of improving the reactive compensation efficiency. The distribution box distribution transformation terminal comprises a box body and an acquisition processor, the acquisition processor is connected with a reactive compensation controller and is equipped with an RS-485 communication interface, and the reactive compensation controller depends on a control signal issued by the acquisition processor to realize the reactive compensation. The RS-485 communication interface is connected with a residual current operated protector, and the box body is equipped with a branch loop monitoring device. The acquisition processor is connected with a digital signal processor, and a GPRS communication device which is connected with a master station normally is arranged outside the box body. The advantages of the present invention are that by using the acquisition processor to issue the control signal, a reactive power compensator compensates the voltages in a distribution box, a power factor of a power grid, the power supply efficiency and the power supply environment are improved, and the loss of a power supply transformer and the transmission lines are reduced; by using the acquisition processor to issue the control signal, the automation control of the reactive power compensator is realized, and the reactive power compensator can compensate the power in one step.

The invention discloses an apparatus and method for measuring deformation of a shock absorption block in a launching cylinder. The apparatus comprises a transmission member installed on the surface ofthe shock absorption block, wherein the transmission member is used for driving the shock absorption block to have relative displacement along with the deformation of the shock absorption block, anda moving direction of the transmission member is consistent with a radial direction of the launching cylinder; and the apparatus also comprises a cantilever beam installed in the launching cylinder, the installation direction of the cantilever beam is perpendicular to the moving direction of the transmission member, one end of the cantilever beam is connected with the transmission member, the other end of the cantilever beam is also adhered with a strain gauge, and the strain gauge is also used for being electrically connected to an external data acquisition system; and the strain gauge is used for detecting a strain value generated by the extrusion of the cantilever beam by the transmission member. According to the invention, the space occupied in the launching cylinder is very small, andthe installation is very convenient; measurers can be installed at multiple points in the launching cylinder according to the requirements, and a test wire can be led out at a sealed joint, thereby realizing the multipoint measurement; and the measurers can obtain the instantaneous deformation of the shock absorption block by virtue of experiments.

The invention relates to an ecological desilting diffusion measuring device which is characterized by comprising a sensor bracket and a control system, wherein a concentration meter, a height meter and a liquid level meter are arranged on the sensor bracket and are connected with the control system through leads respectively; the sensor bracket is arranged at the front end of a pipe frame; the pipe frame is arranged at the upper end of an adjusting bracket; and the pipe frame is L-shaped and consists of a plurality of pipe sleeves and a bent joint. The ecological desilting diffusion measuringdevice has a simple structure and low manufacturing cost; all the members can be disassembled and assembled quickly and are convenient to carry, install and use, and the diffusion condition of sediments or suspended substances around a desilting tool bit in a desilting process can be measured to judge whether the desilting tool bit is an environmentally-friendly desilting tool bit; and the diffusion condition of sludge around the working desilting tool bit is measured in real time during desilting operation, so that data are provided for adjusting the working state of the desilting tool bit, the diffusion distance of sediments or suspended substances is shortened, the requirement of ecological desilting is met, and ecological desilting is realized.