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64results about How to "Not easy to be disturbed by the outside world" patented technology

Method for evaluating construction quality of tunnel drilling and blasting based on three-dimensional laser scanning

The invention relates to a method for evaluating the construction quality of a tunnel, and discloses a method for evaluating the construction quality of tunnel drilling and blasting based on three-dimensional laser scanning. The method comprises the following steps of: acquiring data by adopting a tunnel data acquisition module at first, and then processing the acquired data by adopting a tunnel data pre-processing module, building a tunnel three-dimensional model building module according to the processed result, performing post-processing by adopting a tunnel three-dimensional model post-processing module, and finally, evaluating the result by adopting a tunnel drilling and blasting quality evaluation module. The method discloses by the invention has the advantages of being wide in measurement range, strong in applicability, high in automation degree, and good in reliability.
Owner:TONGJI UNIV

System for controlling vehicle running and method for controlling vehicle running

The invention provides a system for controlling vehicle running. The system comprises a mobile terminal, a server for receiving a control instruction of a mobile terminal, a communication server receiving an instruction of the server of the mobile terminal, a vehicle-mounted terminal for controlling vehicle running and a real-time display module which is located on the mobile terminal and can feed back the vehicle running state in real time. The mobile terminal sends the control instruction to the server of the mobile terminal, the server of the mobile terminal analyzes the control instruction and sends the control instruction to the communication server, the communication server sends the instruction analyzed by the server of the mobile terminal to the vehicle-mounted terminal, the vehicle-mounted terminal controls vehicle running according the instruction of the server of the mobile terminal, and the real-time display module feeds the vehicle running state back to the mobile terminal in real time. The server of the mobile terminal is added, so that the conveying process of the communication instruction between the mobile terminal and the vehicle-mounted terminal is more reliable. By means of a method for controlling a vehicle, the system itself does not easily interfere with the outside, a user can conveniently operate the system, and the system is high in safety.
Owner:BYD AUTO IND CO LTD

Frame-type circuit breaker fault diagnosis and degree evaluation method based on operating accessory current

ActiveCN107219457ASolve the kernel function selection problemSolve choice problemsCircuit interrupters testingSupport vector machineEngineering
The invention relates to a frame-type circuit breaker fault diagnosis and degree evaluation method based on operating accessory current. The method includes the steps of firstly determining the working stages, including an energy storage stage, a closing stage and an opening stage, of the circuit breaker to be diagnosed and evaluated, then using the current of an energy storage motor to diagnose fault during the energy storage stage, and using the current of a closing coil to diagnose fault during the closing stage, using the current of the opening coil to diagnose fault and assess degree during the opening stage, respectively detecting the current signals of the energy storage motor during the energy storage stage, the current signals of the closing coil to diagnose fault during the closing stage and the current signals of the opening coil during the opening stage, conducting fault diagnosis with a multi-core support vector machine, and accurately determining the fault degree through a fault degree characteristic curve when the degree of the fault diagnosed has to evaluated.
Owner:HEBEI UNIV OF TECH

System for controlling vehicle running and method for controlling vehicle running

ActiveCN103507810ACommunication command transmission process is reliableThe transmission process is stable and reliableTelephonic communicationClosed circuit television systemsTerminal serverTransfer procedure
A system and a method for controlling running of a vehicle are provided. The system (10) comprises: a mobile terminal (1) configured to send a control instruction; a mobile terminal server (2) configured to receive and forward the control instruction; an onboard terminal (3) configured to receive the control instruction and to control the vehicle to run according to the control instruction; and a display (4) disposed on the mobile terminal (1), and configured to display an image in front of and / or in rear of the vehicle in real time. With the system, an instruction transmitting process between the mobile terminal and the onboard terminal may be more reliable, and with the method, the system may be prevented from disturbed by the environment, which facilitates the user to operate the vehicle and provides better safety.
Owner:BYD CO LTD

Electric equipment fault detection method and device

The invention discloses an electric equipment fault detection method and device. The method is characterized by recording a start time point of electric equipment entering a work state, recording cumulated time after the start time point and recording continuous working time of the electric equipment working continuously after the start time point; and when the cumulated time is not larger than a preset period time and the continuous working time is larger than preset time, giving a prompt message for reminding that the electric equipment has fault. When fault detection is carried out through the electric equipment fault detection method and device, fault detection of the electrical equipment is carried out through a mode of judging whether the continuous working time of the electric equipment in the preset period time surpasses the preset time instead of an original mode of judging whether electrical parameters vulnerable to external interference are normal; if the electric equipment has fault, the fault reminding is given; and since the continuous working time is not easy to be affected by the outside world, fault detection can be carried out accurately based on the continuous working time and the preset time, and detection accuracy is improved.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Method and device used for controlling and researching bubble polymerization process

The invention relates to a method and a device used for controlling and researching a bubble polymerization process. According to the method, bubbles are generated in a low-viscosity conductive electrolyte, and surfaces of the bubbles have charges; the bubbles with the charges having different polarities collide and polymerize in a non-conductive transparent liquid, and a collision and polymerization process of the bubbles is controlled through an external electric field. The device comprises an electrolyte storage tank, a dielectric separator plate, two metal electrode plates, a micropore pipe, electrodes and bubble observation analysis equipment, wherein the two electrodes have opposite polarities, height of the dielectric separator plate is greater than the electrolyte, and the non-conductive transparent liquid is injected above the electrolyte. The method is advantaged in that, the bubbles are generated through the micropore pipe, sizes of the bubbles are easy to control, and the bubbles are not easy to break; a motion speed and locus of the bubbles can be controlled through adjusting intensity of the electric field; shapes of the bubbles are good before polymerization, the bubble polymerization process is slow, duration time is long, and requirements for a camera is reduced.
Owner:CHANGZHOU UNIV

Numerical word wheel of direct-reading gage

The invention relates to a numerical word wheel of a direct-reading gage. The numerical word wheel comprises a main wheel with numerical words marked on the side surface, wherein an annular magnet is arranged on the right side wheel surface of the main wheel, one half circle of the annular magnet is an N-pole, the other half circle of the annular magnet is an S-pole, a shaft installation hole is arranged in the center of the main wheel, a shielding cover is arranged at the left side of the main wheel, and the shielding cover covers the left side wheel surface of the main wheel. A first drive gear is arranged on the edge of the left side wheel surface of the main wheel, and a second drive gear is arranged on the edge of the right side wheel surface of the main wheel. The numerical word wheel of the direct-reading gage is simple in structure, not high in processing requirements, lowered in cost, and convenient to manufacture and assemble. When the direct-reading gage provided by the invention is used, a magnetic sensor is adopted to acquire the rotating angle of the numerical word wheel, only one magnetic sensor is installed corresponding to one numerical word wheel, so that convenience is brought, the processing requirement is not high, the external interference is less, the precision of a metered electric signal is high, and the electronic type reading accuracy of the direct-reading gage is improved.
Owner:ZHEJIANG XIANXIN SCI & TECH CO LTD

Crawler-type circulating logistics sorter

The invention discloses a crawler-type circulating logistics sorter. The crawler-type circulating logistics sorter comprises a controlling system, a machine frame, a loading assembly, a sorting assembly, an information identifying assembly and the other, the loading assembly is electrically connected to the controlling system, the sorting assembly and the information identifying assembly are in communication connection with the controlling system, the information identifying assembly is used for indentifying the cargo information and the sorting vehicle information, the sorting assembly comprises a sorting vehicle, a vertical-type annular sorting vehicle rail, a rail transferring bracket and a cargo outputting opening. According to the crawler-type circulating logistics sorter, the previous complex sorting procedure is simplified, the speed is above twice higher than the speed of one vehicle for one cargo of an ordinary sorter, the sorting efficiency and precision are high, the electricity does not need to be used, the energy consumption is high, the mounting environment adaptability is high, the land occupation is few, the operating worker is few, the manufacturing cost is low, the economic effectiveness is high, and the crawler-type circulating logistics sorter is suitable for application and promotion in the field of material sorting.
Owner:曾小波

Camera module and electronic equipment

The invention discloses a camera module and electronic equipment. The camera module comprises: a base; a camera which is supported on the base through a connecting part and can rotate relative to the base, wherein the optical axis of the camera extends in the first direction; a first anti-shake driving mechanism which is located between the base and the camera and comprises a first electro-deformation piece and a second electro-deformation piece which are arranged in a spaced mode in the second direction, wherein the second direction is perpendicular to the first direction, the first electro-deformation piece and the second electro-deformation piece are located on the two sides of the connecting part respectively, the first ends of the first electro-deformation piece and the second electro-deformation piece are both connected with the base, the second ends of the first electro-deformation piece and the second electro-deformation piece are both connected with the connecting part, the first electro-deformation piece can deform and stretch out and draw back in the second direction when powered on, and the second electro-deformation piece can deform and stretch out and draw back in the second direction when powered on, so that the camera is driven to rotate through the first anti-shake driving mechanism. According to the scheme, the problems that the response is slow and the camera module is susceptible to external interference during shake prevention can be solved.
Owner:VIVO MOBILE COMM CO LTD

Instrument for measuring three-dimensional profile of object

The invention relates to an instrument for measuring a three-dimensional profile of an object, which is used for measuring the three-dimensional appearance and profile of the object. The instrument comprises a dustproof base (1), a bearing plate (2), lifting rotating components (3), a stepper motor (4), a coupling shaft (5), a measuring cylinder (6), a carrying platform (7) and a protective outer cover (8), wherein the lifting rotating components (3) comprise a transmission nut (31), a bearing (32) and a main support (33). The instrument for measuring the three-dimensional profile of the object has the advantages of high measurement accuracy and convenient operation.
Owner:JIANGSU KANGLAITE TECH

Concentrated discharging type precision rice direct-seeding device

The invention discloses a concentrated discharging type precision rice direct-seeding device. The device is characterized by comprising a distributor, a seed box, a slanting fluted-wheel type seed discharging device, a fan, an air capacity control valve, a seed guiding device, a conveying pipe, a seed discharging pipe and a pressure measuring device, wherein the bottom of the distributor is connected with the conveying pipe and the seed discharging pipe, and the pressure measuring device is arranged on the distributor; the seed guiding device is connected with the conveying pipe, the slanting fluted-wheel type seed discharging device and the seed box are connected above the seed guiding device, an air inlet of the air capacity control valve is connected with the fan, an air outlet is connected with the conveying pipe, and the fan is driven under external power; the slanting fluted-wheel type seed discharging device right under the seed box supplies stable seed flow, the fan provides constant power air flow, the distributor uniformly distributes mixed flow of seeds and air to the seed discharging pipe, and the seeds are sown in seed ditches. Compared with the prior art, the device has the advantages that uniform and continuous precision sowing of rice can be realized, and back flowing of the seeds due to partial pressure of air can be prevented; the concentrated discharging type precision rice direct-seeding device can have the walking speeds higher than that of a conventional mechanical sowing machine and has higher sowing efficiency.
Owner:SOUTH CHINA AGRI UNIV

Multichannel numerical control machine tool energy consumption data acquisition bench

The invention relates to a multichannel numerical control machine tool energy consumption data acquisition bench, which comprises an LabVIEW acquisition module, an SERVO GUIDE acquisition module and an industrial PC, wherein the industrial PC is internally provided with the LabVIEW acquisition module and the SERVO GUIDE acquisition module and is connected with the LabVIEW acquisition module and the SERVO GUIDE acquisition module respectively; and the LabVIEW acquisition module and the SERVO GUIDE acquisition module are respectively connected with the numerical control machine tool. Compared with the prior art, the multichannel numerical control machine tool energy consumption data acquisition bench has the advantages of various data acquisition function modules, high sampling frequency, simple test bench building and use process, non disturbance, simple operation and the like.
Owner:TONGJI UNIV

Controller-based active radial bogie and active steering control method thereof

The invention discloses a controller-based active radial bogie and an active steering control method thereof. The controller-based active radial bogie comprises an active radial bogie body, a drivingcircuit, a displacement sensor and the controller; the active radial bogie body comprises a main framework, an auxiliary framework and a radial driving mechanism; the main framework is hinged to the auxiliary framework; the two ends of the radial driving mechanism are connected with a front rotating arm and a rear rotating arm of the main framework respectively; the displacement sensor is installed on the main framework; the displacement sensor and an pulse encoder are connected with the controller; the controller is connected with a motor of the radial driving mechanism through the driving circuit. With the controller-based active radial bogie and the active steering control method thereof, the active steering control effect of the active radial bogie can be improved; the running stability and curve trafficability of a railway vehicle are improved; control is stable; steering control precision is high; immunity to external interference is almost realized; accurate active steering is achieved; the abrasion of wheel sets is effectively reduced; and the service lives of the wheel sets are prolonged.
Owner:WUHAN UNIV OF TECH

Device capable of monitoring rotation angle of swing mechanism in real time and monitoring method thereof

The invention discloses a device capable of monitoring the rotation angle of a swing mechanism in real time and a monitoring method thereof, and belongs to the field of engineering machinery. The device comprises a concrete pump truck, a rotary supporting mechanism, a speed reducer, a rotating speed sensor and a monitoring terminal. The rotary supporting mechanism is installed on the concrete pumptruck, the speed reducer is installed on the rotary supporting mechanism, the rotating speed sensor is installed on the speed reducer, a first gear is arranged on the rotary supporting mechanism, a second gear is arranged on the speed reducer, the second gear is meshed with the first gear, and the rotating speed sensor is electrically connected with the monitoring terminal. The device is simple in structure. The rotating speed sensor is directly installed on the speed reducer, and the rotating speed sensor and the speed reducer are organically combined, so that the rotating speed sensor can output stable signals and is not easily interfered by the outside. Parameters of the speed reducer and output signals have a stable conversion relation, so that results obtained through real-time monitoring are accurate and can be visually observed through a computer, and data collection is quite convenient.
Owner:CHANGDE KEJIAN MACHINERY MFG CO LTD

Feed additive compounded from natural cortex eucommiae ingredients and mineral embedding probiotics

The invention discloses a feed additive compounded from natural cortex eucommiae ingredients and mineral embedding probiotics, and belongs to the technical field of feed additives. The additive disclosed by the invention is processed through the following steps of embedding and mixing multihole reticular carriers processed from natural ore ingredients with a mixed bacterium preparation of bacillus subtilis and bacillus licheniformis so as to obtain a mixture, then uniformly mixing, and matching the mixture with cortex eucommiae extract powder. The additive disclosed by the invention is simple in preparation method, industrialized production can be performed, the efficacies of the additive are far better than those of conventional like products, and the reduction amount of ammonia nitrogen can reach 80% or above; besides, the additive has good stability, and strains are not liable to inactivate and are not liable to suffer from external interference. The additive disclosed by the invention is comprehensive in functions, not only has the main functions of improving intestinal tracts and improving absorption functions but also has the function of improving the health level, the immune level and the production level of livestock on the integral level.
Owner:WUXI CIMA SCI

Dumbbell slider type optical fiber accelerometer and method for using the dumbbell slider type optical fiber accelerometer

The invention provides a dumbbell slider type optical fiber accelerometer and a method for using the dumbbell slider type optical fiber accelerometer. Three chambers are sequentially provided in a casing in the longitudinal direction, two ends of a middle chamber are respectively provided with through holes communicated with the chambers at both ends, a cross bar main body in the middle of a dumbbell type slider is disposed in the middle chamber, the middle part of the cross bar main body is sleeved and fixed with an annular stopper, the cross bar main body at both ends of the annular stopperis respectively provided with springs, two ends of the cross bar main body respectively extend into the chambers at both ends through the through holes, a reflector is fixed on the outer side of a convex portion at one end of the cross bar main body, an optical fiber hole is provided at the position directly facing the reflector on the inner wall of the chamber where the convex portion is located,an optical fiber bundle extends from the exterior of the casing into the optical fiber hole, and the optical fiber bundle includes incident optical fibers and receiving optical fibers. The dumbbell slider type optical fiber accelerometer and the method for using the dumbbell slider type optical fiber accelerometer are used to solve the problem that the existing accelerometer is not applicable inmany occasions, is not strong in practicability, and cannot meet the actual acceleration measurement requirements, belonging to the technical field of optical fiber sensing.
Owner:GUIYANG UNIV

Hydrological telemeter

The invention relates to a hydrological telemeter. The hydrological telemeter solves the technical problems that after an external alternating current is powered down, normal working of an existing hydrological water resource terminal cannot be achieved, and the existing hydrological water resource terminal is large in size, high in energy consumption, low in measurement precision, poor in operational stability and low in reliability. The hydrological telemeter comprises a main control circuit board, and a touch display screen, a data storage unit, a temperature and humidity sensor, a switching power supply module, a water level indicator, a water manometer, a flowmeter, a rain gauge and a GPRS / GSM module which are connected with the main control circuit board, wherein a central processing unit is arranged on the main control circuit board, a solar photovoltaic panel, a PWM charging circuit and an accumulator which are connected in sequence are further arranged on the main control circuit board, and the PWM charging circuit is connected with the main control circuit board; a DC / DC switching circuit which is connected with the central processing unit is further arranged on the main control circuit board, the switching power supply module is connected with the DC / DC switching circuit, DC 12V voltage is output by the switching power supply module, the DC 12V voltage is used as the input of the DC / DC switching circuit, and DC 3.3V voltage is output by the DC / DC switching circuit. The hydrological telemeter is widely applied to remote collection and transmission of hydrological water source information.
Owner:青岛世纪星语通讯科技有限公司

Sailing type marine strong magnetic surface-mounted surface seawater temperature measuring device and measuring method

The invention discloses a sailing type marine strong magnetic surface-mounted surface seawater temperature measuring device which comprises a temperature chain module and a host. The temperature chain module comprises a plurality of connecting sheaths and mounting sheaths, the connecting sheaths and the mounting sheaths are arranged at intervals one by one, and each mounting sheath is provided with a temperature sensor in butt joint with the host; strong magnet mounting holes are formed in the connecting sheaths and the mounting sheaths, the connecting sheaths and the mounting sheaths are mounted and fixed through structures in the strong magnet mounting holes, each strong magnet mounting hole comprises a strong magnet mounting hole site in the sheath, and a strong magnet is arranged in the strong magnet mounting hole site in the sheath; the device is suitable for being installed on a shipboard of a steel ship to measure seawater surface layer temperature data in real time in a sailing mode, predicts surface layer water temperature through dynamic response of a sensor located on the surface of seawater, achieves contact type automatic observation, is suitable for sailing type automatic observation and contact type measurement, is not prone to external interference, and is high in measurement precision.
Owner:OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI

Machine carried electric traction coal-mining machine with short main body

The invention relates to a short body machine mounted electrical haulage coal cutter with advantages as safety and convenient maintenance. The technical project is: on the coal cutter body, a machine mounted transformer is arranged, one end of the transformer is connected to a power supply cable, the other end is connected to a low-voltage electric speed regulation device, and on the short body of the coal cutter, a medium voltage electric speed regulation device with power supply cable can also be mounted, suitable for different short body electrical haulage coal cutter.
Owner:SHANGHAI BRANCH TIANDI SCI&TECH CO LTD

System and method for detecting trace impurities in high-purity trichlorosilane

The invention discloses a system and a method for detecting trace impurities in high-purity trichlorosilane. The system comprises a PFA bottle, the PFA bottle comprises a soft plug, the soft plug is suitable for sealing the PFA bottle, and the PFA bottle is suitable for containing a mixed solution of hydrofluoric acid and nitric acid; the sampling device comprises a sampling pipe, one end of the sampling pipe is connected with the first PFA needle head, the other end of the sampling pipe is connected with the trichlorosilane pipeline, a valve and a flow control meter are arranged on the sampling pipe, and the valve is suitable for controlling connection and disconnection of the sampling device and the trichlorosilane pipeline; the flow control meter is connected with the air extracting pump and is suitable for controlling the volume of a trichlorosilane sample extracted in a single time; the first PFA needle is suitable for puncturing the soft plug and stretching below the liquid level of the PFA bottle to enable the extracted trichlorosilane sample to react with the mixed liquid; the pipettor comprises a second PFA needle head, and the pipettor is suitable for piercing the soft plug through the second PFA needle head and extending into the PFA bottle to transfer the reaction liquid to the testing device. The system is high in detection precision, good in detection result accuracy and reliability, and not easy to cause external interference.
Owner:江苏鑫华半导体科技股份有限公司

Method and device for testing skin water content by infrared spectroscopy

The invention provides a method and a device for testing skin water content by infrared spectroscopy, and belongs to the technical field of infrared spectrum measurement. In order to solve the problemthat the electric method for measuring skin moisture content is susceptible to external interference, the invention discloses a method for measuring skin moisture content, which is characterized in that: a short-wave infrared light source is irradiated on a selected measuring position; extracting information from light reflected from skin tissue; The concentrations of the components to be measured were calculated by using short-wave infrared spectroscopy. Short-wave infrared spectroscopy is a rapid, non-invasive and non-contact technique for the accurate measurement of skin moisture.
Owner:湖北器长光电股份有限公司

Green liquid adhesive bandage with antibacterial function and preparation method thereof

The invention discloses a green liquid adhesive bandage with an antibacterial function and a preparation method thereof. The formula of the liquid adhesive bandage comprises the following components in percentage by mass: 10-40% of a film-forming agent, 0.1-3% of octenidine, 0.2-20% of a humectant, 0.1-5% of a wound healing promoting substance, 0.01-0.03% of a blood coagulation factor and 31.9-84.7% of water, the film-forming agent is prepared from the following components in percentage by mass: 3 to 13 percent of polyvinyl alcohol, 3 to 13 percent of polyvinylpyrrolidone and 4 to 14 percent of polyvinyl butyral; the product prepared according to the formula and the method has the advantages of being good in antibacterial effect, fast in film forming, small in skin irritation, fast in hemostasis, fast in wound healing, free of peculiar smell and the like.
Owner:ZHENDE MEDICAL CO LTD

Digital on-line water quality analysis sensor

The invention discloses a digital on-line water quality analysis sensor which comprises a shell, a water quality analysis electrode and a signal processing module, wherein the water quality analysis electrode is arranged at the top end of the shell; the signal processing module is arranged in the shell, is connected with the water quality analysis electrode through a signal output wire and is used for converting a signal acquired by the water quality analysis electrode into a digital signal and then outputting the digital signal. An original analog signal of the sensor is converted into a standard digital signal, so that the standard digital signal is difficultly interfered by the outside when being sent to an instrument; a remote sending distance is longer than 200 meters; the digital on-line water quality analysis sensor is suitable for a use environment having a special requirement on mounting; mistake signals generated by outside interference are actively filtered out through a program in a signal conversion module, so that measurement mistakes are avoided.
Owner:杭州诺普泰克仪器仪表有限公司

Fault diagnosis and degree evaluation method of frame circuit breaker based on operating accessory current

ActiveCN107219457BSolve the kernel function selection problemSolve choice problemsCircuit interrupters testingSupport vector machineElectric machinery
The invention relates to a frame-type circuit breaker fault diagnosis and degree evaluation method based on operating accessory current. The method includes the steps of firstly determining the working stages, including an energy storage stage, a closing stage and an opening stage, of the circuit breaker to be diagnosed and evaluated, then using the current of an energy storage motor to diagnose fault during the energy storage stage, and using the current of a closing coil to diagnose fault during the closing stage, using the current of the opening coil to diagnose fault and assess degree during the opening stage, respectively detecting the current signals of the energy storage motor during the energy storage stage, the current signals of the closing coil to diagnose fault during the closing stage and the current signals of the opening coil during the opening stage, conducting fault diagnosis with a multi-core support vector machine, and accurately determining the fault degree through a fault degree characteristic curve when the degree of the fault diagnosed has to evaluated.
Owner:HEBEI UNIV OF TECH

Bridge erecting machine bearing performance rapid detection device and evaluation method

The invention provides a bridge girder erection machine bearing performance rapid detection device and an evaluation method. The detection device comprises a double-layer frame, a standard counterweight, a distance measurement module, an operation module, a storage module and a storage battery. Wherein the distance measurement module comprises a circuit controller, a laser emission unit, a photoelectric conversion unit, a phase identification unit and a distance calculation unit; the standard counterweight is mounted on the upper layer of the frame; the distance measuring module is installed on the lower layer of the frame and used for determining the real-time distance between a crown block and a bridge floor through laser phase changes under carrying of the crown block moving at the constant speed. Carrying out bearing performance calculation on data of the distance measurement module by adopting a processor, carrying out real-time displacement and bearing performance data instant storage by adopting a cache unit, and fixing an operation module and a storage module at the top of the distance measurement module; all the devices are powered by the storage battery. According to the invention, the test module, the counterweight module, the calculation module, the power supply module and the like are integrated, the convenience of the detection process can be greatly improved, the misoperation probability of the detection process is reduced, and the reliability of the evaluation result of the bearing performance of the bridge girder erection machine is effectively improved.
Owner:SOUTHEAST UNIV

Novel countable root canal file

The invention discloses a novel countable root canal file, belonging to dental medical devices. The novel countable root canal file comprises a handle, wherein the handle is provided with a counter; the upper end surface of the handle is provided with a hole, the inner side wall of the hole is provided with an annular groove, and the side wall of the annular groove is provided with a display hole;the counter comprises a character wheel sleeving the annular groove, and a pawl device arranged on a side wall of the hole, the outer side wall of the character wheel is provided with a digital sign,the upper end surface of the character wheel is fixedly connected with a ratchet wheel, the pawl device is connected with the ratchet wheel, an end surface of the character wheel is provided with a through hole, the axis of the through hole is collinear with the axis of the character wheel, a circular ring is sheathed in the through hole, the inner side wall of the circular ring is provided witha chute, a button sleeves the upper end of the hole, the button can move in the hole along the axis of the hole, the bottom of the button is connected with a connecting rod, the side wall of the connecting rod is provided with an inclined block, and the inclined block adapts to the chute. According to the novel countable root canal file, the number of uses of the root canal file can be visually read on the handle.
Owner:CHENGDU JUNSHUO RUIZHI INFORMATION TECH CO LTD

Leakage detection sensor

The invention discloses a leakage detection sensor. The leakage detection sensor comprises a leakage detection sensor transmitter, a communication outer tube and a leakage detection sensor probe, wherein the communication outer tube is arranged between the leakage detection sensor probe and the leakage detection sensor transmitter; one end of the communication outer tube is fixedly connected withthe leakage detection sensor transmitter through a nut; the other end of the communication outer tube is fixedly connected with the leakage detection sensor probe through a nut; a light source component, a receiving component, a signal processing unit and a communication unit are arranged inside the leakage detection sensor probe; a probe communication unit, an arithmetic unit, an indicating unitand an RS485 communication unit are arranged inside the leakage detection sensor transmitter. The leakage detection sensor has the advantages that detection accuracy is high, and the leakage detectionsensor is not easily interference by outside, and the leakage detection sensor can be widely promoted and applied.
Owner:苏州越能科技有限公司
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