118results about How to "Accurately determine the location" patented technology

The invention relates to a machine room energy-saving control system, in particular to a multi-heat dissipation device intelligent linkage machine room energy-saving control system. The machine room energy-saving control system comprises a main control module, and the main control module comprises a fan unit, a heater, a main control microprocessor and an RS232 / RS485 interface circuit, wherein the RS232 / RS485 interface circuit is connected with the main control microprocessor, and the output end of the RS232 / RS485 interface circuit is sequentially connected with a sensor module, an air-conditioning control module and a monitoring upper computer. The machine room energy-saving control system has the advantages: 1) by the start-up and the stop of the upper and the lower fan units and linear speed regulation, the intelligent linkage of fans with the heater and an air conditioner realizes the high-efficient temperature control and the energy conservation and the service life of equipment is prolonged; 2) the machine room energy-saving control system can accurately judge fault position number, type and other information; 3) the machine room energy-saving control system can carry out regular dust removal and cleaning of a heat exchanger and simulate the high and low temperature operation, and has the functions of automatic maintenance and automatic detection; 4) the machine room energy-saving control system has self-learning function and strong compatibility and can precisely control different types of air conditioners; and 5) the function modular design is conductive to the engineering configuration and maintenance.

The invention provides a multifunctional robot system and a control method for a robot body to search a module part. The system comprises a robot body (100) and a module part (200). The robot body (100) is provided with a walking mechanism, a control unit and an energy supply unit. The robot body (100) is provided with a first working module. The module part (200) is provided with a second working module. The module part (200) is provided with an infrared signal transmitting device (99). The robot body (100) is correspondingly provided with an infrared signal receiving device (90). The robot body (100) is provided with a working mode and a searching module part mode. In the working mode, the robot body (100) moves, and the first working module works. In the searching module part mode, rely on the guidance of an infrared signal, and the robot body (100) and the module part (200) are combined. Different working modules of the multifunctional robot system can be combined or separated freely to work, when the robot body automatically searches the module part, the connection is automatic, and the precision is high.

The invention relates to a skeleton type cable, belonging to the technical field of cables. The cable comprises a skeleton, a reinforcement, an internal skeleton slot, a cable core, a protective layer and a sheath, and is characterized in that a first groove and a second groove are formed on the internal skeleton; an external skeleton slot is arranged on the external edge of the sheath; the position of the internal skeleton slot corresponds to the position of the external skeleton slot; a third groove and a fourth groove are formed on the external edge of the sheath; and the positions of the first and third grooves correspond to the positions of the second and fourth grooves; the bottom surfaces of the internal and external skeleton slots are planes and the bottom surfaces at the corresponding positions are parallel; on the cross section of the cable, the area of the first groove is larger than the area of the second groove; the area of the third groove is larger than the area of the fourth groove; and on the projection of the bottom surface of any of the internal skeleton slot, the bottom of the external skeleton slot at the corresponding position is located in the bottom surface of the internal skeleton slot or has the size the same as that of the bottom surface of the internal skeleton slot. The cable provided by the invention mainly has the following beneficial effects that the manufacturing is simple, the mass production is easy, the construction is convenient, and the protection to cables is more effective.

The invention discloses a subway shield tunnel lining quality high-precision rapid vehicle detection method and apparatus. The detection apparatus comprises an image acquisition module, a ground-penetrating radar module, a multi-sensor fusion positioning module, a laser range-finding module and an industrial personal computer, the image acquisition module comprises a linear array CCD industrial camera and an LED light source, the ground-penetrating radar module comprises a ground-penetrating radar antenna and a ground-penetrating radar host, and the multi-sensor fusion positioning module comprises an inertia measuring apparatus and an encoder. The method and apparatus can be used for automation and normalization detection of the shield tunnel lining quality of existed subway lines, the power failure operation is avoided, a maintenance skylight is not occupied, normal operation of the subway is not influenced, the detection efficiency is substantially improved, the detection time of disease types and positions is greatly shortened, the damage to the tunnel lining can be eliminated in time, and the safety operation of the subway and the life and property safety of people are guaranteed.

The invention puts forward a power battery pack series connection fault diagnosis method. A battery pack is formed via series connection of n battery single cells, and a crossover voltage test method.A battery management system is used for recording battery single cell voltage and battery single cell surface temperature. An MATLAB / simuink is used for simulating adopted power batteries and recording simulation voltage. A mean squared error between experimental and simulation output voltages is calculated to preliminarily determine if voltage exception occurs. If yes, a Z-score is calculated asa voltage detection exception coefficient based on the mean squared error. According to the voltage detection exception coefficient, whether a fault is connection failure or increased internal resistance of single cells; if yes, the fault is determined as a secondary fault, and the rise rate of battery surface temperature is calculated to determine whether the rise rate is greater than a preset threshold value; if yes, the fault is determined as a primary fault. Via the method disclosed in the invention, reliable diagnosis of connection failure of the power battery pack can be realized, increase of contact resistance and increase of internal resistance can be differentiated from each other, only a simple algorithm is needed, and an operating burden of a battery management system can be effectively lowered.

The invention discloses an abrasion tester for a cylinder sleeve-piston ring friction pair. The structure of the abrasion tester is as follows: a cylinder sleeve is fixed between first and second positioning frames; an inner sleeve is arranged in an outer sleeve; the outer sleeve is connected with a pressure spring base through a thread; inner ends of a double annular elastic supporting rod are horizontally embedded in grooves of third and fourth positioning frames; a piston ring is arranged in the groove between fifth and sixth positioning frames; an outer diameter of the piston ring is glued to an inner wall of the cylinder sleeve; the inner surface of the piston ring is tightly pressed by the outer ends of the double annular elastic supporting rod; and four stretching force sensors are uniformly mounted between the second positioning frame and a screw carriage at intervals. In the abrasion tester, a piston ring radial loading mechanism is formed by four positioning frames and the double annular elastic supporting rod; a piston ring axial loading mechanism is formed by the pressure spring base and the pressure spring, so that the change condition of explosion pressure endured by the piston ring at practical work is simulated; and the abrasion tester provided by the invention can excellently simulate the practical working condition and has the advantages of short test period, low test cost, and the like.

The invention discloses a method for detecting folded corners of paper money. The method includes the steps: extraction of paper money infrared reflection graphs: extracting infrared reflection graphs of a detection sensor; judgment of paper money corner image incompleteness: judging whether four corners of paper money is incomplete or not, and if a certain corner of the paper money is incomplete, judging whether an incomplete part of the paper money is folded or cut off according to the infrared reflection graphs; linear detection: subjecting corner images of the paper money with incomplete corners to edge linear detection to determine whether the incomplete corners have straight lines or not; paper money folded corner judgment: if a certain corner of the paper money has a straight line, extracting the infrared reflection graphs of the paper money to determine whether the incomplete part of the paper money is folded or cut off, and determining that the corner is a folded corner if the incomplete part of the paper money is folded. According to the method, whether the incomplete parts of the paper money are folded corners or not can be judged, sizes of the folded corners can be judged as well, and accordingly money detection efficiency and acceptance of the paper money with the folded corners are improved.

The invention discloses a method for judging maintenance and servicing requirement of an elevator based on elevator tracks. The method comprises the following steps of collecting the real-time movement track of a lift car of the elevator, and uploading to a monitoring center; sending the produced corresponding real-time movement track data to a cloud server, analyzing, and comparing with the preset reference movement track data; when the analyzing and comparison result is not consistent, sending the maintenance and servicing prompting information, and sending to an elevator maintenance and servicing unit; enabling the elevator maintenance and servicing unit to push a maintenance and servicing task to a mobile terminal of a maintenance and servicing person, and enabling the maintenance andservicing person to upload an elevator maintenance and servicing plan and a maintenance and servicing task in sequence to the cloud server to store and update the maintenance and servicing records. The method has the advantages that the maintenance and servicing requirement of the elevator can be quickly judged, and the maintenance and servicing information of the elevator can be quickly downloaded, so that the maintenance and servicing task of the elevator can be quickly completed, and the maintenance and servicing record is uploaded to the cloud server; in the maintenance and servicing process, the reality and validity of all maintenance and servicing data can be effectively guaranteed, the safety hidden hazards in the elevator equipment can be further eliminated, and the life safety andproperty safety of passengers can be guaranteed.

The invention is applicable to the field of vehicle location, and provides a video locating method of vehicles and a system thereof. The video locating method comprises the following steps: a video device records the video of the ambient environment by a camera installed on the vehicle; the data of the video after compression and GPS location data of the vehicle corresponding to the time of the video are sent to a network server; the network server is based on the surrounding map of the vehicle obtained according to the GPS location data, and then establishes relationship with the surroundingvideo of the vehicle at the corresponding time so as to be provided for a user to determine the location of the vehicle. The user can accurately judge the location of the vehicle by combining with thevideo of the ambient environment of the vehicle according to the surrounding map of the vehicle location determined by the GPS location, thus realizing the fine accurate location of the vehicle.

The present invention provides a tunnel packet loss detection method and device, and a network communication device. Through improvement of sending frequency of sending a detection request message through a head node and quantity statistics and report of transmit-receive message in each node in a tunnel, the tunnel packet loss detection method and device, and the network communication device can realize rapid and accurate tunnel packet loss detection, can be applied to a two-way tunnel and a one-way tunnel, can perform tunnel transmit-receive packet statistics of each node on a link, accurately determine the concrete packet loss position and quantity, rapidly locate the network fault points, provide convenient means for engineering maintenance and satisfy the requirement of network operation maintenance.

The invention discloses a thin film transistor liquid crystal display device and a repairing method thereof. A repairing mark is arranged on a gate line of the device; the repairing mark is corresponding to an overlapped part of a drain and a gate, or corresponding to a non-transmitting area of a pixel electrode; and when the repairing mark is corresponding to the non-transmitting area of the pixel electrode, a shading structure is arranged between a gate isolation layer and a passivation layer corresponding to the repairing mark. During the process of repairing a display device light spot, under the condition that the repairing mark is corresponding to the overlapped part of the drain and the gate, the position of the repairing point can be exactly judged, so that the short circuit phenomenon between the gate line and a source electrode can be avoided, and the repairing success rate can be improved; and under the condition that the repairing mark is corresponding to the non-transmitting area of the pixel electrode, the light leakage phenomenon at the edge of the pixel can be avoided, because the shading structure is arranged between the gate isolation layer and the passivation layer corresponding to the repairing mark, the light leakage phenomenon does not occur at the repairing mark, and the repairing success rate can be improved.

The invention discloses a fire-extinguishing scheduling method and system for fire-fighting robots of an electric tunnel. The scheduling method comprises the following steps: obtaining tunnel ambientcondition data, and adopting a transverse data fitting and longitudinal data fitting method to pre-judge a suspected fire source position and strength according to the tunnel ambient condition data; scheduling a video robot to be close to the suspected fire source position within a safety distance to judge a development stage of a fire behaviour; scheduling the surrounding fire-fighting robots ina unified mode according to the determined development stage of the fire behaviour and strength of the fire behaviour, and scheduling the fire-fighting robots to a fire behaviour site to perform fire-fighting fire-extinguishing treatment; and scheduling the fire-fighting robots which complete spray to withdraw from a fire source site, obtaining fire behaviour continuous monitoring data of the video robot in real time, and performing secondary fire-extinguishing treatment once after-combustion occurs. The fire-extinguishing scheduling method and system can realize automatic fire behaviour monitoring and fire extinguishing, guarantee safe operation of power equipment without staff on duty and human intervention, greatly reduce labor cost, and improve working safety of personnel.

The invention discloses a thrombus taking device. The thrombus taking device comprises a thrombus taking support, and developing elements are arranged on the thrombus taking support. Preferably, the developing elements are arranged at the far end, the middle section and the near end of the thrombus taking support. The developing elements are linear or annular or netty or in point shapes, and the arrangement modes of the developing elements include one or more modes that developing materials are sprayed and painted to the thrombus taking support, and the developing elements are installed on the thrombus taking support in a winding or buckling or punching or welding or splicing mode. The developing elements are evenly distributed on the thrombus taking support, and particularly are evenly distributed around the circumference of the thrombus taking support, the expanding state during thrombus taking and the specific position of the support can be accurately displayed accordingly, the fusion condition of the support and the blood vessel is judged, judgment of a doctor and operating of surgery are convenient, and operation time is shortened.

The invention relates to a method for locating a disturbance source of an electrical power system. In the method, the disturbance is utilized to evaluate the fundamental positive-sequence impedance of a non-disturbance source side of the system, wherein the symbol of an resistance component in the impedance can reflect disturbance positions. At a dividing point M of a power-supply system side and a user side, the method is used to collect voltage and current waveforms containing the disturbance, and the power-supply system side is utilized as an upper stream and the user side is utilized as a lower stream; voltage changes and current changes generated by the disturbance at the M are respectively expressed as delta V and delta I, and the equivalent impedance of the voltage and the current is expressed as Ze; if the disturbance is generated at the power-supply system side, Ze is the equivalent impedance of the user side; if the disturbance is generated at the user side, Ze is a negative value of the equivalent impedance of the power-supply system side; and the symbol of a Ze resistive component is inspected to determine the direction of the disturbance source.

In order to improve detection accuracy and efficiency of weak passwords in existing account passwords in an application system, and find same encrypted passwords in a lot of encrypted password lists and display and determine the same encrypted passwords as weak passwords and make clear the serial number and quantity thereof, the invention provides a weak password screening method. The method comprises the following steps: providing a weak password dictionary for a checking tool through a password generation tool; enabling encryption mode of the weak password dictionary to be totally same with the encryption mode of an application system encrypted password file to be checked; carrying out comparison check on the encrypted passwords, wherein the encrypted passwords unmatched with the weak password dictionary but appearing repeatedly are also judged as suspected weak passwords; and displaying password comparison check results. The method improves the original single mode of generating the weak password dictionary through the password dictionary generation tool to supply to the checking tool, and can check the application system weak passwords missed in the weak password dictionary and is complementary with the weak password dictionary, thereby reducing cases of detection miss to the maximum degree.

The invention discloses a thrombus removing device system. The thrombus removing device system comprises a thrombus removing bracket, a pushing rod and a capturing part, wherein the near end of the thrombus removing bracket is connected with the pushing rod, and the near end of the thrombus removing bracket or the pushing rod is connected with the capturing part; and the capturing part is arrangedto be capable of storing the thrombus removing bracket. Further, the capturing part comprises a first end and a second end, wherein the first end is connected with the near end of the thrombus removing bracket or the pushing rod; and an opening is arranged in the second end for the thrombus removing bracket and the pushing rod to pass through. The capturing part has a first state and a second state, wherein under the first state, the thrombus removing bracket is positioned outside the capturing part; and under the second state, the capturing part is overturned inwards and outwards for sleeving the thrombus removing bracket inside. For the thrombus removing device system, due to the unique design of the capturing part, the falling thrombus during the thrombus removing process can be effectively captured.

The invention provides a position detecting device and device, a snore-ceasing pillow and cushion and a control method of the snore-ceasing pillow and cushion, and relates to the technical field of articles of daily use. The position detecting device includes an air pump, a plurality of air bags, air pressure sensors, a control valve group and a controller, wherein the air bags are mutually independent and are communicated with the air pump through air guide pipes, the air pressure sensors are arranged on the air guide pipes and are used for detecting the air pressure values of all the air bags, and the control valve group and the controller are used for controlling the air guide pipes between the air bags and the air pump to be connected or disconnected. The controller is connected with the air bags, the air pressure sensors and the control valve group and is used for controlling the control valve group and the air pump to make all the air bags contain equivalent air, after inflation,the air pressure values of all the air bags are compared to obtain a first comparison result, the first comparison result is compared with a preset threshold value to obtain a second comparison result, and according to the second comparison result, whether or not the air bags are pressed and the positions of pressed air bags are analyzed. The invention further relates to the detection method, thesnore-ceasing pillow and cushion containing the position detecting device, and the control method of the snore-ceasing pillow and cushion.

The invention provides an intelligent cleaning system for garbage floating on the water surface. The system comprises: a ship body; a garbage recognition assembly which comprises a detection module, the detection module comprises a binocular camera, an area array laser radar and an image processing unit, wherein the binocular camera is used for acquiring a color image and a depth image of a water surface, the area array laser radar is used for acquiring a radar image of the water surface, and the image processing unit is used for acquiring the position of garbage according to the color image, the depth image and the radar image; a salvage assembly; and a ship body control system which is used for controlling the ship body to move and further used for controlling the garbage recognition assembly and the salvage assembly to cooperate, and therefore water surface garbage salvage is achieved. The invention further provides a control method of the intelligent cleaning system for the garbage floating on the water surface. According to the intelligent cleaning system for the water surface floating garbage, the position and the type of the water surface floating garbage can be accurately recognized, accurate fishing is achieved, and the fishing efficiency is improved.

The invention discloses a power distribution network fault section accurate positioning method based on wide-area zero-sequence current distribution information. Wave recording type fault indicators are arranged on each power distribution line every a certain distance; the distance between every two fault indicators is a section; when a single-phase earth fault occurs on the line, the fault indicators arranged along the line are started and record zero-sequence current amplitudes; and according to the difference of along-line distribution of the zero-sequence current amplitudes of the fault line and the non fault line, and based on given rules, the fault section is judged. The power distribution network fault section accurate positioning method based on the wide-area zero-sequence currentdistribution information is not affected by the transition resistance and a fault initial angle; for whether a neutral non-grounding system or a resonant grounding system, the fault section can be determined by utilizing the measured value of the fault indicator rapidly and reliably; and in addition, effective judgment also can be carried out when a bus fault occurs, so that the method has relatively high practical application values.

The invention particularly discloses a tree detection method. The tree detection method involves a surface acoustic wave device, a laser ranging sensor and a microprocessor, and includes the steps of (1-1), detecting the interior of a trunk by acoustic waves so as to obtain a first reflected acoustic wave signal; (1-2), using the surface acoustic wave device for inputting detected stress waves into the microprocessor so as to obtain a second signal; (1-3), using the microprocessor for computing an output signal-to-noise ratio according to a signal-to-noise ratio computing formula; (1-4), subjecting an output signal-to-noise ratio curve of a system model to stochastic resonance so as to obtain a signal-to-noise ratio valley value of the signal-to-noise ratio curve; (1-5), moving two electrodes of a surface acoustic wave resonator along the circumference direction of the trunk; (1-6), moving the two electrodes of the surface acoustic wave resonator from the start end to the termination end and repeating detection gradually; (1-7), using the microprocessor for establishing a three-dimensional model of the trunk and holes thereof resulting from pest damage. The tree detection method is capable of detecting the positions of the holes precisely so as to determine pest positions, and has the advantages of rapidity in detection and good economy.

The invention relates to an oil-water interface measuring device, which comprises an optical sensing probe, a light source, a photoelectric detection device and a warning device, wherein the optical sensing probe comprises a pentaprism structure, an incident end optical fiber, an exit end optical fiber, a first collimator arranged on the incident end optical fiber, and a second collimator arranged on the exit end optical fiber; and the pentaprism structure comprises a closed pentagon surrounded by a first reflection edge, a second reflection edge, a third reflection edge, a fourth reflection edge and a fifth reflection edge, wherein the fifth reflection edge is a horizontal edge. The oil-water interface measuring device solves the technical problems that the accuracy for measurement of the existing oil-water interface is low and the normal operation of production cannot be ensured, the multipoint distribution oil-water interface measurement is realized, and the detection accuracy for the oil-water interface is improved.

The invention relates to the technical field of plant energy consumption monitoring, and discloses a plant energy consumption monitoring and management system. The plant energy consumption monitoringand management system comprises a data acquisition module, a data analysis module, a data optimization module, a data evaluation module and a network transmission control module; the data acquisitionmodule includes a metering device, a sensor and an external input, and the data acquisition module collects energy consumption information, device operation information, and system operation information, and transmits the information to the data analysis module; the data analysis module analyzes and diagnoses data transmitted by the data acquisition module, find out the data that is unreasonable and has a large difference with the past data, and transmits the analyzed and diagnosed data to the data optimization module; the data optimization module includes a storage unit, a standard unit and acorrection unit, and the storage unit receives and store the data transmitted by the data analysis module. The plant energy consumption monitoring and management system can monitor and manage the energy consumption of the plant in real time.

The invention relates to a paper feeding and positioning device for the automatic stamping of cross-page seals and a stamping machine using the paper feeding and positioning device. The paper feedingand positioning device comprises paper feeding rollers, a paper pressing groove, limiting teeth, a layered elastic sheet, a sheet pressing rod and an elastic sheet frame; the paper feeding rollers cansequentially convey paper to the paper pressing groove one by one; the paper pressing groove is lower than the paper feeding rollers; a paper limiting block is arranged on one side, close to the paper feeding rollers, of the paper pressing groove, so that the paper can neatly fall into the paper pressing groove; a plurality of elastic feeler gauges are fixed together so as to be integrally manufactured into the layered elastic sheet, and the layered elastic sheet can rotate along with the elastic sheet frame; the limiting teeth are arranged near the layered elastic sheet, so that the feeler gauges deform to a certain extent and rotate to a position above the limiting teeth after the layered elastic sheet rotates forwards by a certain angle; after the layered elastic sheet reversely rotates by a certain angle, one end of each feeler gauge leans against the corresponding limiting teeth, so that the limiting teeth move or the feeler gauges are sequentially released and rotated into the paper pressing groove after being rotated; and the sheet pressing rod can move up and down and can extrude the layered elastic sheet at the lowest position, so that the paper can be pressed by the layered elastic sheet after entering the paper pressing groove.

The invention relates to a method for positioning a disturbance source of a power system based on high-order harmonic equivalent impedance property. A monitor of the disturbance source is arranged at a demarcation point of a power supply system and a user side, and the monitor of the disturbance source can catch voltage and current waveform containing disturbance at an M point so as to judge the disturbance is from upper stream or lower stream, wherein the power supply system side is arranged at the upper stream, and the user side is arranged at the lower stream; once the occurrence of one disturbance is measured at the detection point, the equivalent impedance Ze is calculated, wherein (Vpre, Ipre) and (Vduring, Iduring) are five-order harmonic negative-sequence voltage and current measured at the measuring point M before and during the occurrence of the disturbance; if the Ze falls in a first quadrant of an impedance plane diagram, the disturbance source is determined to be positioned on the power supply system side; and if the Ze falls in a third quadrant of the impedance plane diagram, the disturbance source is determined to be positioned on the user side.

The invention discloses a horizontal well geosteering method based on element logging. The horizontal well geosteering method comprises the following specific steps: 1, acquiring geological element data of a target horizontal well; 2, establishing ratio data of longitudinal characteristic elements and related elements of the target horizontal well; 3, obtaining geological element difference data of a target layer and a non-target layer of the target horizontal well; 4, establishing a geological element initial model of the target horizontal well along the design trajectory of the target horizontal well, and predicting geological element change data along the design trajectory of the target horizontal well; 5, carrying out actual drilling on the target horizontal well, obtaining geologicalelement data actually measured while drilling, and carrying out comparative analysis on the geological element data actually measured while drilling and the predicted geological element data, so the geological element data actually measured while drilling and the predicted geological element data tend to be consistent. The position of the drill bit at the bottom of the well can be accurately judged, and the concealed fault is successfully identified, so the drilling trajectory is reliably guided to be timely and reliably adjusted, and the drilling quality is guaranteed.

The invention relates to the technical field of tower crane construction, in particular to a three-dimensional collision-preventing method of tower cranes and a collision-preventing device of the three-dimensional collision-preventing method. A position collecting device is used for collecting the positions of the outer ends of tower arms of tower cranes, a processor is used for conducting collision analysis on any two tower cranes, and an analysis result is sent back to a processing terminal. Compared with the prior art, the combined structure is simple and feasible, and mounting and demounting are easy. The three-dimensional collision-preventing method of the tower cranes and the collision-preventing device of the three-dimensional collision-preventing method have the beneficial effectsthat a position collecting device is used for obtaining position information, the processor is used for conducting data processing, and the processing terminal is used for conducting feedback; the whole collision-preventing method is ordered and clear, due to the original design of the data processing method, the collision-preventing method which conducts operation simply and conveniently and conducts processing rapidly is achieved; and in addition, the specific collision conditions and positions between the tower cranes can be accurately judged, running of the tower cranes can be better adjusted effectively in time, and safety accidents are prevented.

The invention provides a disposable balloon uterine manipulator. The disposable balloon uterine manipulator includes a central guide rod, wherein a dome cup sleeves the central guide rod, and can freely slide in the axial direction of the central guide rod; the dome cup includes a cup body and a cannula communicating with the cup body; the inside of the cup body is opened in an inner narrow and outer wide manner; a wrapping flange is arranged outside the cup body; and a ring ridge and a grating belt is arranged on the wrapping flange, and is conductive to determination of the cutting length of a vagina and reduction of dissemination of tumor. The uterine manipulator is a disposable apparatus, and can avoid iatrogenic cross infection. Besides, the central guide rod with the S-shaped structural design can adapt to the normal physiological flexibility formed by a corpus uteri, a vagina and a pelvis; two sections of scales on the central guide rod can be used for direct or indirection measurement of depth of a uterine cavity; and the top end of the central guide rod is provided with an elastic aqueous capsule which is communicated with an injection pipe in the central guide rod, so that the situation that perforation of uterus can be effectively avoided when the uterus is lifted and stability and accuracy during the process of lifting the uterus can be increased.

The invention discloses a puncture route positioning device for puncture drainage of cerebral hemorrhage and belongs to the technical field of medical equipment. The device comprises an L-shaped positioning frame, wherein a support arm of the positioning frame is a rectangular frame, and sliding holes are formed in two opposite side edges of the rectangular frame; the device also comprises a positioning plate, rotating shafts are arranged on two sides of the positioning plate and nested in the sliding holes, one rotating shaft is sleeved with a dial, a first pointer is arranged on the dial, the dial is glidingly arranged on the rectangular frame, and a first positioning part is arranged on the other rotating shaft; a puncture cannula is hinged to the positioning plate, angle-measuring scales are arranged on the positioning plate along the motion track of the puncture cannula, and a second locking part for locking the puncture cannula is arranged on the puncture cannula; a first indication area and a second indication area which are arranged linearly are arranged on the positioning plate and the bottom plate respectively, so that the device can give accurate and reliable guide to medical workers, promotes puncture positioning to be accurate and achieves the purpose of reducing the puncture risk.

The invention relates to a concrete pole rebar quality tester and a detection method by using the tester. The tester is composed of a fixed stand, an exciter, a rotary encoder, a cell box, a signal preprocessor, an ARM (analog digital conversion) processor, a magnet measuring element and the like, wherein the fixed stand can be sheathed on a concrete pole to be tested, and the magnet measuring element and the exciter are installed together. When the concrete pole rebar quality tester is used for detection, the fixed stand is tightly sheathed on the concrete pole to be tested; the clip of the cell box is clamped on the belt of an inspector; the exciter magnetizes the rebar to generate back magnetic flux; the magnet measuring element measures the back magnetic flux passing through an armature; and the back magnetic flux is relevant to the diameter, the amount, the position, the corrosion and the like of the rebar, i.e. the back magnetic flux is converted into an electrical signal, is amplified, filtered and the like by the signal preprocessor, is subjected to analog digital conversion by the ARM processor and is analyzed to obtain a parameter which needs to be detected. The tester disclosed by the invention is simple to manufacture and is convenient to operate, the rebar in the concrete pole can be detected, the diameter, the position, the amount and the corrosion degree of the rebar can be accurately judged, and the detection method is scientific and reasonable.

The invention discloses a positioning device for a mandibular ramus osteotomy. The positioning device has two structures: according to the first structure, the positioning device comprises a first main rod, a subordinate rod, a first connector, a positioning rod, a first limiter and an intra-bone nail which takes a fixing effect during an operation; and according to the second structure, the positioning device comprises a second main rod, a guide plate, a first branch rod, a second branch rod, a second limiter, a third limiter, a second connector, a third connector and an intra-bone nail which takes a fixing effect during the operation. When the positioning device is used, an operation incision line can be kept away from mandibular nerve and mandibular nerve tube, and the location of an osteotomy line can be directly and accurately determined; and during the operation, injury of inferior alveolar nerve vessel bundles can be avoided, and a sufficient width with proximal segment can be guaranteed as well.