69results about How to "Not susceptible to external interference" patented technology

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.

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.

The invention relates to a method for coarsely aligning a static base based on polarization and gravity information. Adopted equipment comprises a tri-axial accelerometer, a GPS receiver and two or more polarization sensors. The method comprises the following steps: firstly, calculating a unit sun vector under a geographic coordinate system by utilizing geographic position information of a carrier and time information; secondly, obtaining gravity information by utilizing the accelerometer; thirdly, obtaining sun vector information under a carrier coordinate system by utilizing the polarization sensors; finally, determining a vector posture transformation matrix by utilizing the information. The method provided by the invention has the advantages of being high in precision, low in calculated amount and the like.

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.

The invention discloses a glue injection and injection molding method for inductors, which includes inner glue injection and outer injection molding. In inner glue injection, at least a through hole of one inductor is filled with a circular glue layer the same as the through hole in shape, two ends of the circular glue extend out of two end faces of the inductor, the outer peripheral face of the extension end is serrated, and accordingly a semi-finished inductor is obtained. In outer injection molding, subjecting the outer periphery and the through hole of the semi-finished inductor element are subjected to injection molding. A plastic layer at least covers an extension end of the circular glue, so that the plastic layer is meshed with the serrated outer periphery of the extension end. The inductors produced by the method are high in temperature and humidity resistance, fine in insulativity, stable in inductance and low in cost.

The invention discloses a Fabry-Perot (F-P) cavity. The F-P cavity is a folded confocal cavity which is integrally formed by a single optical element, wherein the folded confocal cavity is provided with three reflecting surfaces; a first reflecting surface is a plane and is used as an input and output coupled surface; a second reflecting surface is a plane; a third reflecting surface is a spherical surface; and the curvature radius of the spherical surface is half of the geometrical length of a round trip of a light ray in the folded confocal cavity. The invention also discloses a laser based on the F-P cavity. Through the technical scheme, the problems that the conventional F-P cavity has poor stability, is easily interfered by surroundings, has a too large volume and a complicated system and the like are solved.

The invention provides a weak current measuring device of an ATE system and a measuring method. The measuring device comprises at least one group of I-V conversion circuits and a V / I source. The I-V conversion circuit is used to carry out current-to-voltage conversion, two measurement input ends are connected in series with a tested loop, and the I-V conversion circuits are connected to the V / I source through a Kelvin circuit. The V / I source is connected to positive and negative power supply terminals of the I-V conversion circuits through a Force H wire and a Force L wire of the Kelvin circuit so as to provide a work voltage. An output terminal of each I-V conversion circuit is connected through a Sense H wire of the Kelvin circuit, and an output voltage is measured. And a grounding terminal of each I-V conversion circuit is connected through a Sense L wire of the Kelvin circuit. The device has a simple structure, a small size and low power consumption, can be placed very close to a measured device and is not interfered by the outside world. And measurement accuracy is high.

The invention discloses a flexible intelligent sitting posture monitoring system based on hip pressure. The system comprises a piezoresistive film sensor, an interface adapter plate, a data acquisition plate and a data processing device, and the piezoresistive film sensor comprises a plurality of force sensitive point units and is used for sensing sitting posture pressure of a user; the data acquisition board acquires pressure distribution data sensed by the piezoresistive film sensor through the interface adapter board and transmits the pressure distribution data to the data processing equipment; and the data processing equipment processes the received pressure distribution data, and identifies the sitting posture category of the user by using a trained deep learning model. The sitting posture recognition device has the advantages of being accurate in sitting posture recognition, small in size, high in portability, convenient to use, low in cost and not limited by territory environments.

The invention discloses a piezoelectric skin detector, and relates to the technical field of biological sensor and piezoelectric sensing. Non-invasive living body measuring of a small measuring devicecan be realized. The piezoelectric skin detector comprises a probe, a conduction assembly, a sensing assembly and a signal collecting module. One end of the probe makes contact with a to-be-measuredsurface, and the other end of the probe makes contact with the conduction assembly. The conduction assembly is connected with the sensing assembly in a clinical contact state. The sensing assembly isconnected with the signal collecting module. The probe transmits contact body surface conditions to the sensing assembly through the conduction assembly. The sensing assembly generates output signalsthrough the contact input signals. The signal collecting module collects the output signals of the sensing assembly. Through the positive piezoelectric effect, non-invasive detection of skin state information is realized, some physical and chemical information in skin is converted into charge or voltage information, auxiliary reference is provided for representing the physiological state of skin,and the piezoelectric skin detector has the advantages of being simple in structure, rapid in response, rich in detection information, high in comfort, free of invasion and the like.

The invention discloses a lighting control method and system for automobile emergency braking. The method comprises the steps: when a vehicle body electronic stabilization system monitors that the vehicle speed during vehicle driving is larger than or equal to a vehicle speed threshold value and the deceleration of a vehicle is larger than or equal to a deceleration threshold value, the vehicle body electronic stabilization system outputs a brake response CAN signal in an activated state to a vehicle body controller; and after receiving the brake response CAN signal in the activated state, thevehicle body controller controls the rear brake lamp and the high brake lamp to flicker at a preset frequency through a hard wire so as to enter an emergency brake flickering mode. The entering and exiting of the emergency braking flickering mode are controlled by the vehicle body electronic stabilizing system and the vehicle body controller and can be achieved through internal programs of the vehicle body electronic stabilizing system and the vehicle body controller, so that external interference is avoided and reliability is high; the system is free of any new electronic components, and vehicle wiring harnesses and hardware layout do not need to be changed, so that the cost is low, and in addition, deviation and time delay can be effectively reduced.

The invention discloses a data processing method of a chip for fault detection and diagnosis in a multistage reciprocating compressor, and the chip for fault detection and diagnosis is subdivided into eight processing units which can operate in parallel, namely an IO unit, a control unit, a parent individual storage unit, a child individual storage unit, a crossover operation unit, a mutation operation unit, an adaptability degree calculation unit and a section operation unit, and data processing is performed in the eight processing units and comprises three phases: A, an initiation process; B an evolutionary computation continuity process; and C, a process for terminating evolutionary computation. In the invention, by changing the timing sequence of an on-line fault detection and diagnosis algorithm into a parallel one, the computation speed of the algorithm is improved, and the computation time is reduced, thus achieving the requirement of an embedded system on instantaneity.

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.

The present invention provides a follow-up multi-point contact type hoop strain measurement device. The device comprises a connecting ring, a fixing device and an LVDT sensor. A plurality of mounting members are evenly distributed to pass through the sidewall of the connecting ring, wherein the mounting members are square and are provided with circular through holes. The fixing device and the LVDT sensor are alternately arranged in the through holes through connecting pieces. The fixing device comprises a fixing rod having the telescopic function, and end caps arranged at the two ends of the fixing rod, wherein one end cap in contact with a sample at the center of the connecting ring is an arc-shaped end cap. The arc shape of the arc-shaped end cap is matched with the outer periphery of the sample. A fixing device spring is sleeved onto the fixing rod. The two ends of the spring of the fixing device are respectively fixed onto the arc-shaped end cap and the mounting members. The probe of the LVDT sensor is arranged towards the sample. A sensor spring is sleeved onto the fixing rod of the LVDT sensor. The two ends of the sensor spring are respectively fixed on a probe base and the mounting members.

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.

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.

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.

The invention discloses a shank operation leg positioning device for an operating room. The shank operation leg positioning device comprises a bottom plate, a positioning mechanism is arranged above the bottom plate, the positioning mechanism comprises square rods, supporting plates, square cylinders, screws, convex plates, bolts, flitch plates, inserting rods, sliding rods, sleeves, arc-shaped plates and soft cushions, and the two square rods are located on the front side and the rear side of the upper surface of the bottom plate correspondingly. According to the shank operation leg positioning device for the operating room, through cooperation of the bottom plate and the positioning mechanism, medical staff place a shank to be operated of a patient on the upper surface of the bottom plate, an operation focus is located in the center of the upper surface of the bottom plate, and the positions of the square cylinders are adjusted by rotating the screws anticlockwise; and after adjustment is completed, the screws are rotated clockwise to abut against the square rods, then the bolts are rotated clockwise to enable the arc-shaped plates to abut against the principle focus of the shankof the patient, the to-be-operated shank of the patient can be clamped and positioned, and the shank of the patient is not prone to being interfered by external force in the operation.

The invention discloses a dual-coupling structure-based single-mode core-dislocated fiber temperature measurement method. Based on a core-dislocated fiber structure, interferential optical signals pass through a coupler to generate the laser light of a particular wavelength. After that, the wavelengths of the laser light outputted at different temperatures correspondingly are analyzed, and then the performance of a temperature sensing system is studied. The dual-coupling structure is high in resolution rate, stable in performance and high in sensitivity.

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.

The invention discloses a camera module and electronic equipment. The camera module comprises: a base; a camera which can rotate around a fulcrum relative to the base, wherein the optical axis of the camera extends in the first direction; a first driving mechanism which 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 camera respectively, the first ends of the first electro-deformation piece and the second electro-deformation piece are connected with the base, the second end is connected with the camera through the second flexible connecting piece, the first electro-deformation piece and the second electro-deformation piece can deform and stretch out and draw back in the first direction when powered on so as to drive the camera to rotate around a first axis through the first driving mechanism, and the first axis passes through the fulcrum and is perpendicular to the first direction and the second direction. 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.

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.

The invention relates to a soft lens lithotripsy system based on magnetic induction remote positioning. The soft lens lithotripsy system comprises a magnetic induction operating mechanism, a control handle, a foot switch and an audio and video device. The magnetic induction operating mechanism comprises a data acquisition card, a magnetic field space and an operating rod; a magnetic sensor is arranged at the front end of the operating rod, and the operating rod is propelled and / or rotated in the magnetic field space; the data acquisition card acquires a current signal generated when the operating rod simulates flexible lens propelling and / or rotating operation in real time, and a pose signal of the operating rod is obtained; the mechanical arm obtains a pose signal of the operating rod and acts in real time; a flexible lens operating mechanism is arranged at the end part of the mechanical arm; the control handle is used for controlling the action of the flexible lens operating mechanism; the pedal switch controls the on-off operation of a laser machine; and the audio and video device acquires medical audio and vedio date. The soft lens lithotripsy system is high in operation precision and good in stability, and the safety and reliability of the remote guidance flexible lens lithotripsy operation are improved.

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.

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.

The invention discloses a microorganism measurement device in water and a measurement method thereof, which includes a power supply port, an operation panel, a groove, a loading part, a microorganism measurement volume, a lower part of a container, an upper part of a container, a film, a measuring solution, a stirrer, a measuring electrode, a negative Electrode, positive electrode, microorganism collection terminal, sampling rod, anti-interference cap, super absorbent resin, magnet, rotor, motor. One end of the power supply port is connected to the negative electrode and the positive electrode. When the other end is connected to the power supply, the microorganisms in the liquid are measured. Negative polarization and positive polarization occur respectively on the negative electrode and the positive electrode. The microbial collection voltage and microbial measurement voltage are simultaneously adjusted through the operation panel. The microbial measurement device polarizes the microorganisms by applying an external voltage, causing the microorganisms to fall to the microbial collection through the zigzag electrode. When measured in the terminal, the number of microorganisms is directly displayed through the digital display panel. It is simple to operate, not susceptible to external interference, and has high accuracy.

The present invention discloses a low-error capacitance liquid level detection device which comprises: a shell, wherein a detection bottle body is placed in the shell, a connection shell is clamped and connected in the inner wall of the right side of the shell, a bearing shell is clamped and connected outside the right side of the connection shell, and an abutting block is fixedly connected to the inner wall of the right side of the bearing shell and plays a role in pushing and extruding the connecting shell; and bearing blocks which are evenly distributed outside the bearing shell, wherein adjusting bolts are connected to the interiors of the bearing blocks in a penetrating mode, a first capacitor block is connected to the interior of the upper side of the connecting shell, a second capacitor block is connected to the interior of the lower side of the connecting shell, and an adjusting rod is connected to the right side of the upper end of the connecting shell in a penetrating mode. According to the low-error capacitance liquid level detection device, in the using process, the capacitance module can be tightly attached to the bottle body, the detection effect is prevented from being influenced, the stability is high when the capacitance module is attached to the bottle body, the capacitance module is not prone to being interfered by the outside world, and therefore errors are reduced, and the detection accuracy is prevented from being influenced.