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31results about How to "Carry accurately" patented technology

Safety valve on-line detector driven by stepping motor

The invention provides a safety valve on-line detector driven by a stepping motor. The safety valve on-line detector comprises a mechanical fixture system used for fixing a detecting device on a safety valve, a stepping motor system used for providing the tension needed for lifting the safety valve, and an electric detecting system used for transmitting feedback data of the stepping motor system and controlling the stepping motor system. The safety valve on-line detector has the advantages that the accuracy and the repeatability of the safety valve on-line detector are higher, the carrying and the mounting are facilitated, the detachment is convenient, the verification is rapid, and the judgment is objective and accurate.
Owner:ZHEJIANG UNIV OF TECH +1

Portable dropping device and dropping method

InactiveCN105879150AFor accurate controlEasy to carryMedical devicesPressure infusionNeedle deflectionPneumatic pressure
The invention discloses a portable dropping device and a dropping method. The portable dropping device comprises a box body, an infusion bottle, an infusion tube, a vein needle, a drip bulb, a liquid drop speed measuring unit, a central processing unit and a pressurizing device connected with the infusion bottle, wherein the infusion bottle, the infusion tube, the vein needle, the drip bulb, the liquid drop speed measuring unit, the central processing unit and the pressurizing device are arranged in the box body. The liquid drop speed measuring unit detects the liquid drop speed and sends a detection signal to the central processing unit. The central processing unit performs analysis and processing according to the received signal and regulates and controls the air pressure in the infusion bottle through the pressurizing device, and accordingly the purpose of using the infusion bottle to perform safe infusion at different heights is achieved. The portable dropping device has the functions of dropping speed setting, automatic adjustment, needle deflection warning and liquid level warning and the like, and what's more important is that the dropping speed control of the device is not limited by the infusion bottle height.
Owner:HUNAN UNIV OF HUMANITIES SCI & TECH

Portable concentration device for quantitative samples of planktons

The invention discloses a portable concentration device for quantitative samples of planktons. The portable concentration device comprises a bracket part and a siphon part, wherein the bracket part consists of a horizontal bracket and vertical brackets; a ring-shaped pipe is welded at the upper end of each vertical bracket, and the vertical brackets are fixed on the horizontal bracket at certain intervals by using fixed bolts; the siphon part comprises latex tubes, flow-speed adjusters, air bags and spiral water stopping clamps; the latex tubes are connected with the flow-speed adjusters and penetrate through the flow-speed adjusters; the air bags are connected to the latex tubes; the other ends of the air bags are connected with the latex tubes; the spiral water stopping clamps are placed on the latex tubes; the latex tubes are fixed on the horizontal bracket and the vertical brackets by binding belts. The portable concentration device disclosed by the invention has the advantages that the structure is simple, the cost is low, the carry is portable, the assembly is fast, the use is convenient, high-efficiency and accurate effects are achieved, and the device can be effectively applicable to the concentration quantification of fixed samples in hydrobiology; the carrying amount of the field quantitative samples can be greatly reduced and the working efficiency is improved.
Owner:INST OF AQUATIC LIFE ACAD SINICA

Portable double-microphone sound source identification and positioning device

The invention relates to a sound source identification and positioning device and especially relates to a portable double-microphone sound source identification and positioning device. The technical problem to be solved is to provide the portable double-microphone sound source identification and positioning device which is simple in structure, small in size, convenient to carry and more visual in display result. The portable double-microphone sound source identification and positioning device comprises a microphone A, a microphone B, a pre-amplifier A, a pre-amplifier B, a support, a signal acquisition module, a sound source identification and positioning module, a storage module and a displayer. The portable double-microphone sound source identification and positioning device solves the defects that an existing sound source identification and positioning device is large in size, and inconvenient to transport and carry; the device is simple in structure, small in size, convenient to carry, capable of identifying sound sources from different directions, small in computation complexity, high in real-time performance, and suitable for being applied to an embedded system; and the device is equipped with a liquid crystal display screen, so that the display results are more visual.
Owner:WUHAN UNIV OF SCI & TECH

Differential magnetic detector for monitoring cheating in examination room

The invention relates to a differential magnetic detector for monitoring cheating in an examination room. The main structure of the differential magnetic detector comprises a box, a frame, a circuit board, batteries, a power circuit, a signal indicator switch, a monitoring indicator alternation switch and a radiator; and nine sub-circuits constitutes the integral circuit. The differential magnetic detector can confirm the position of cheating and display signals by adopting a monitoring circuit composed of the chips of a magnetic field sensor to compare the magnetic induction intensity of the existing special-shaped substances on the basis of the magnetic field generated by a wireless earphone, therefore, cheaters can be located accurately. The magnetic detector has the advantages of reasonable design, compact structure, small size, high portability and convenient operation and application; the magnetic detector powered by a positive 9V DC supply covers a monitoring radial distance of 200mm to 300mm in a straight line with the monitoring accuracy being higher than 95%, therefore, the differential magnetic detector is an ideal magnetic detecting device for monitoring the cheating activity in the examination room; and the differential magnetic detector fills in the scientific research blank for the similar technology.
Owner:常晓明

Laser quick tracking and pointing branch scavenging system

ActiveCN107052598AAccurate tracking and positioningAccurate and fast tracking and positioningCuttersCutting implementsGyroscopeShort circuit protection
The invention discloses a laser quick tracking and pointing branch scavenging system, belongs to the field of electronics, and aims to provide a laser quick tracking and pointing branch scavenging system for accurately removing branches near high voltage lines by laser. The system comprises a laser power supply, a laser, a focusing system, a thermal imager, a control system, a position limiting device and a three-dimensional translation platform; the laser power supply comprises a pulse constant-current output part circuit, a power conversion circuit, an isolation module circuit, a short circuit protective circuit, an over-voltage protective circuit, an over-temperature detection circuit and over-current protective circuit; the control system comprises an acceleration gyroscope sensor, an output chip circuit, a reference voltage chip circuit, a pulse output circuit, a voltage stabilizing circuit, a PWM pulse width modulation chip, a field effect tube driving circuit, a communication chip circuit, an interface circuit, an isolation module power supply, a 485 isolation communication chip, a buffer chip circuit and a main control chip; the position limiting device comprises a position control sensor interface; and the laser adopts a solid laser which uses solid materials as working materials. The laser quick tracking and pointing branch scavenging system is applied to positions where workers cannot reach on industry aspect, can accurately and quickly realize positioning, and scavenges the branches.
Owner:CHANGCHUN UNIV OF SCI & TECH +2

Method for rapidly and accurately determining residual chlorine in drinking water on site

The invention discloses a method for rapidly and accurately determining residual chlorine in drinking water on site. The method comprises the following steps: sequentially adding 2mL of a buffer solution contained in a 2mL centrifuge tube, 2mL of DPD contained in a 2mL centrifuge tube and a water sample with a fixed volume, which is sampled by and full of a fixed test tube into a 100mL conical flask; then transferring 2.8 mmol / L ammonium ferrous sulfate standard solution by using a pipette and carrying out titration: firstly titrating by taking 100 mu L and 50 mu L as units, titrating by taking 20 mu L and 10 mu L as units when the color is faded, finally recording the total titration volume V1; finally realizing rapid and accurate determination of the residual chlorine concentration in the water sample according to a formula. The method has the advantages of being convenient to carry, accurate in measurement, wide in measurement range, time-saving, medicament-saving and the like.
Owner:ZHEJIANG NORMAL UNIVERSITY

A damage detection method for floor slab thickness

The invention discloses a damage detection method for the thickness of a floor slab, which comprises a transparent glass cylinder and a floor slab, the transparent glass cylinder has a detection rod plugged into the inside of the transparent glass cylinder, and a sliding sliding rod is sleeved on the outside of the transparent glass cylinder. shaft, the outer surface of the sliding shaft is fixedly connected with an upper positioning rod, one side of the sliding shaft is provided with a fixing bolt, and the bottom end of the detection rod is fixedly connected with a bottom shaft. The damage detection method for the thickness of the floor slab improves the measurement of the damage method measuring device for detecting the thickness of the floor slab more accurately, is convenient to use, simple to operate, saves time and effort, and the damage method measuring device for detecting the thickness of the floor slab only needs One-person operation can complete the measurement, which can improve the efficiency of measuring floor thickness by using the damage method and reduce personnel operations. It is convenient and efficient, and easy to carry. Compared with the previous two-person operation, it saves manpower and can avoid the unevenness of the formwork joints. error, the prior art is more accurate.
Owner:镇江新区建设工程质量中心试验室

Hole cavity diameter measuring device and measuring method

The invention relates to the technical field of geometric quantity measurement, in particular to a hole cavity diameter measuring device. According to the technical scheme, the hole cavity diameter measuring device comprises a measuring rod and a push rod, a ball head is arranged at one end of the measuring rod, a displacement sensor is arranged at the other end of the measuring rod, and a displacement rod of the displacement sensor can slide in the length direction of the measuring rod; and one end of the push rod is hinged with the middle part of the measuring rod. When the device is used, the size of a groove or a hole with a known size is measured firstly, and the displacement sensor is reset; then the measuring device is sent into a target hole cavity to enable the ball head to be incontact with the side wall of the hole cavity, the measuring rod is pushed to rotate around the contact point of the ball head and the part, the minimum value of the displacement sensor in the rotating process is measured, and thus, the diameter of the target cavity can be measured. The device can guarantee the measurement precision and accuracy, is simple and convenient in operation, is accuratein measurement, is repeatable, is high in measurement precision, and is portable.
Owner:INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS

Piezoelectric admittance-based data compression reconstruction and structural damage identification method and device

The invention belongs to the field of structural health monitoring, and relates to a piezoelectric admittance-based data compression reconstruction and structural damage identification method and a device. The method comprises the following steps: acquiring original conductance data, and performing maximum and minimum normalization processing on the original conductance data; compressing the processed sampling data by using a compressed sensing theory, performing linear transformation on the data through a random matrix, and converting a problem of recovering an original signal into a residualiteration problem; reconstructing the conductance data based on an adaptive orthogonal matching pursuit algorithm of optimized sparsity parameter analysis; and carrying out damage diagnosis on the structure by utilizing the root-mean-square deviation and the correlation coefficient obtained by the reconstruction data. According to the method, damage identification based on a piezoelectric admittance technology and a data compression algorithm based on an orthogonal matching pursuit algorithm can be effectively combined, damage of different types of structures can be effectively identified, and the method is still effective under the condition that a sensor carries out damage operation.
Owner:HUAZHONG UNIV OF SCI & TECH

Thermosensitive forehead temperature gun, forehead temperature measuring method and operating method of thermosensitive forehead temperature gun

The invention discloses a thermosensitive forehead temperature gun, a forehead temperature measuring method and an operating method of the thermosensitive forehead temperature gun. The thermosensitive forehead temperature gun is provided with an IC (Integrated circuit ) board, wherein the one end of the IC board is electrically connected with a heat sensitive sensor; the top end of the heat sensitive sensor is arranged on a steel cap on the front end of a detecting head internal component by virtue of variable expansible polystyrene or other elastic heat insulating materials; and the detecting head internal component and the exterior of the steel cap are provided with a same probe clamping at one ends of an upper cover and a lower cover. The forehead temperature measuring method comprises the following steps of: A, starting the thermosensitive forehead temperature gun and inquiring ambient temperature; and B, contacting the probe with the forehead of a measured person and calculating the forehead temperature of the measured person. The operating method of the thermosensitive forehead temperature gun comprises the following steps of: calculating changes of resistance value of the heat sensitive sensor by virtue of the software module of the white thermosensitive forehead temperature gun, obtaining the body temperature of the measured person and displaying the body temperature on a display unit. The thermosensitive forehead temperature gun disclosed by the invention can be used for overcoming the defects of a mercury thermometer and rapidly and effectively measuring accurate temperature value, is convenient to carry, and has less possibility of being damaged.
Owner:DONGGUAN CITY RONGFENG MEDICAL EQUIP CO LTD

Viscous liquid injection device for liquid speed bumps

The invention provides a viscous liquid injection device used for liquid speed bumps and belongs to the technical field of road traffic construction. The viscous liquid injection device aims at solving the problems that in the prior art, time and labor are wasted in the liquid injection process, and cleaning is not easy. The viscous liquid injection device comprises a walking unit, a liquid storage unit arranged on the walking unit and a liquid discharging unit connected with the liquid storage unit. The liquid discharging unit comprises a shell arranged on the walking unit. The shell is divided into a stirring cavity, a heating cavity and a releasing cavity from top to bottom. The stirring cavity comprises multiple spiral stirring rods, and each stirring rod is connected with a motor. Heating resistance wires are arranged on the side wall of the heating cavity. The releasing cavity is provided with a push board, the upper end face of the push board is fixedly connected with the lowerend of a push rod, the upper end of the push rod penetrates through the heating cavity and the stirring cavity to be connected with an air cylinder, multiple material leaking holes are formed in the push board, and the air cylinder drives the push board to move up and down to push viscous liquid to be discharged out of the shell.
Owner:吉林省菁华高科技术有限公司

Multifunctional polar coordinate instrument

The invention relates to a multifunctional polar coordinate instrument for potting a polar coordinate. The multifunctional polar coordinate instrument is composed of a semicircle colorless and transparent plastic dial and a white nontransparent plastic ruler, the dial and the ruler are combined together through a shaft in the circle center of the back face of the dial and a circular hole in the ruler, and the ruler can perform 180-degree rotation below the dial. A reticule is formed by the diameter of the dial and the radius corresponding to the 90-degree scale on the upper surface of the shaft. A side wall perpendicular to the dial is arranged at the arc-shaped edge of the back face of the dial, the side wall and the shaft are equal in height, and the height is slightly larger than the thickness of the ruler. The zero graduation end of the ruler is in an arc shape, the right middle, close to the arc-shaped end, of the ruler is provided with a cylindrical circular hole, and the diameter of the circular hole is slightly larger than the diameter of the shaft on the dial. An indicating line pointing to the circle center of the upper bottom face on the circular hole is arranged at the arc-shaped end. A cuboid-shaped groove hole is formed form the circular hole to the other end of the ruler, one long edge of the upper bottom face on the groove hole, the indicating line and the circle center of the upper bottom face of the circular hole are in the same straight line, length scales are arranged on the long edge, and a zero point is located on an axis of the circular hole.
Owner:张松吉 +2

Differential magnetic detector for monitoring cheating in examination room

The invention relates to a differential magnetic detector for monitoring cheating in an examination room. The main structure of the differential magnetic detector comprises a box, a frame, a circuit board, batteries, a power circuit, a signal indicator switch, a monitoring indicator alternation switch and a radiator; and nine sub-circuits constitutes the integral circuit. The differential magnetic detector can confirm the position of cheating and display signals by adopting a monitoring circuit composed of the chips of a magnetic field sensor to compare the magnetic induction intensity of theexisting special-shaped substances on the basis of the magnetic field generated by a wireless earphone, therefore, cheaters can be located accurately. The magnetic detector has the advantages of reasonable design, compact structure, small size, high portability and convenient operation and application; the magnetic detector powered by a positive 9V DC supply covers a monitoring radial distance of200mm to 300mm in a straight line with the monitoring accuracy being higher than 95%, therefore, the differential magnetic detector is an ideal magnetic detecting device for monitoring the cheating activity in the examination room; and the differential magnetic detector fills in the scientific research blank for the similar technology.
Owner:常晓明

Discovery method and device for open hierarchical structure relationship and electronic equipment

The invention provides a discovery method and device for open hierarchical structure relationship and electronic equipment. The method comprises the steps of determining to-be-tested statements based on a new corpus; inputting each to-be-tested statement into a relationship representation model, and outputting a corresponding relationship representation vector; clustering relationship representation vectors of all the to-be-tested statements, and determining a new relationship type; inserting the new relationship type into the original hierarchical structure relationship based on a preset rule; wherein the relationship representation model is obtained by training based on sample statements in the original hierarchical structure relation and corresponding relation type labels, and a loss function used in the training process of the relationship representation model is constructed based on dynamic hierarchical triple loss. According to the discovery method and device for the open hierarchical structure relationship and the electronic equipment, the relationship type in the original hierarchical structure relationship is better understood, and the found new relationship is automatically added into the existing original hierarchical structure relationship.
Owner:TSINGHUA UNIV +1

Laser fast tracking and aiming tree branch removal system

ActiveCN107052598BAccurate tracking and positioningAccurate and fast tracking and positioningCuttersCutting implementsOvervoltageGyroscope
A laser fast tracking and aiming tree branch removal system belongs to the field of electronic technology. The object of the present invention is to provide a laser fast tracking and aiming tree branch removal system for accurately removing tree branches near high-voltage lines by laser. The present invention includes a laser power supply, a laser, a focusing system, a thermal imager, a control system, a position limitation, and a three-dimensional translation platform; wherein the laser power supply includes a pulse constant current output circuit, a power conversion circuit, an isolation module circuit, a short circuit protection circuit, an overvoltage Protection circuit, over-temperature detection circuit, over-current protection circuit; control system includes acceleration gyroscope sensor, output chip circuit, reference voltage chip circuit, pulse output circuit, voltage regulator circuit, PWM pulse width modulation chip, FET drive circuit, Communication chip circuit, interface circuit, isolation module power supply, 485 isolation communication chip, buffer chip circuit, main control chip; position limitation includes position control sensor interface; the laser uses a solid-state laser with solid material as the working substance. The invention is applied to positions that are difficult to be reached by humans in industry, and can accurately and quickly realize positioning and remove branches.
Owner:CHANGCHUN UNIV OF SCI & TECH +2

A portable dual-microphone sound source identification and localization device

The invention relates to a sound source identification and positioning device and especially relates to a portable double-microphone sound source identification and positioning device. The technical problem to be solved is to provide the portable double-microphone sound source identification and positioning device which is simple in structure, small in size, convenient to carry and more visual in display result. The portable double-microphone sound source identification and positioning device comprises a microphone A, a microphone B, a pre-amplifier A, a pre-amplifier B, a support, a signal acquisition module, a sound source identification and positioning module, a storage module and a displayer. The portable double-microphone sound source identification and positioning device solves the defects that an existing sound source identification and positioning device is large in size, and inconvenient to transport and carry; the device is simple in structure, small in size, convenient to carry, capable of identifying sound sources from different directions, small in computation complexity, high in real-time performance, and suitable for being applied to an embedded system; and the device is equipped with a liquid crystal display screen, so that the display results are more visual.
Owner:WUHAN UNIV OF SCI & TECH
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