31results about How to "Reliable detection accuracy" patented technology

The invention discloses a fault monitoring early-warning system and method of a shield machine. The system comprises a host monitor, a shield machine condition detector for monitoring condition information of a monitored shield machine in real time, an early warning prompt device controlled by the host monitor, and a timing circuit connected with the host monitor; the early warning prompt device is connected with the host monitor; and the shield machine condition detector comprises a main bearing condition detection unit which monitors the condition of a main bearing of the shield machine in real time, a cutterhead detection unit which monitors the condition of a cutterhead of the shield machine in real time, and a cutterhead driving detection unit for monitoring the condition of a cutterhead driving system in real time. The method comprises the steps that 1) the condition of the shield machine is monitored, and monitoring information is uploaded synchronously; and 2) condition information of the shield machine is analyzed and processed. Thus, a fault in the shield machine can be monitored timely and accurately, and early warning prompt can be provided according to a monitoring result.

The invention discloses a fault monitoring and early warning system and method for a belt conveyor of a mine. The fault monitoring and early warning system comprises an upper monitor, a conveyor working condition detecting device, a data acquiring device, an early warning prompting device and a timing circuit, wherein the conveyor working condition detecting device detects working conditions of a monitored belt conveyor in real time; the data acquiring device is connected with the conveyor working condition detecting device; the early warning prompting device is controlled by the upper monitor; and the timing circuit is connected with the upper monitor. The fault monitoring and early warning method comprises the following steps: 1, detecting the working conditions of the conveyor and synchronously uploading detection information; and 2, analyzing and processing of information of the working conditions of the conveyor: respectively analyzing and processing the information, which is acquired by the data acquiring device at various sampling times, of the working conditions of the conveyor by using the upper monitor in sequence according to the sampling times, and diagnosing faults of the monitored belt conveyor according to analyzed and processed results. The fault monitoring and early warning system is reasonable in design, easy and convenient to use and operate and good in using effect, can timely and accurately monitor faults of the belt conveyor, and can early warn in time.

The invention provides an implementation method and device for a coastal zone ecological environment dynamic monitoring and early warning system. The device comprises a coastal zone deepwater detection buoy and a semisubmersible mini-sized dynamic detection boat. The coastal zone deepwater detection buoy comprises a narrowband Internet-of-Things module, a power transmission wire coil, a berthing telescopic rod, the solar energy combination, an environment monitoring sensor combination and a GPS module. The semisubmersible mini-sized dynamic detection boat comprises a narrowband Internet-of-Things module, a power receiving wire coil, a power system, an attitude controlling and positioning combination, a water body sensor combination, a camera, an alarm lamp and a small-sized solar panel combination. Via the implementation method and device, automatic absolute positioning and relative positioning can be realized, track-based cruise can be achieved, automatic non-contact induction charging can be realized, barriers can be automatically identified, NB-IoT narrowband Internet-of-Things communication-based coastal zone ecological environment dynamic monitoring and early warning can be realized, dynamic processes of coast environment in a region can be rapidly monitored, and marine scientific research workers and managers can be helped to obtain marine environment information.

The invention discloses a compensation system and a device and a method for detecting a high-order aspheric surface. The compensation system comprises a plurality of coaxial optics lenses. A spectroscope is arranged in the coaxial optics lenses; one surface of the spectroscope is a secondary aspheric surface; the secondary aspheric surface is located in the middle position of the compensation system; a light ray arrives at the secondary aspheric surface in a vertical incidence manner; part of the light ray returns according to an original light part through reflection to form standard light, and the other part of the light ray transmits vertically from the secondary aspheric surface to form measurement light. As the measurement light and the standard light are common in light part in an optical system in front of the spectroscope, so that adverse effects caused by surface-shape errors, system assembly errors, eccentric errors, the material refractive index homogeneity and the clamping stress of the components are canceled; the requirement on processing assembly precision is greatly lowered, and therefore, error space can be helped to be kept for various assembly deviations; higher detection precision can be achieved, and the final detection precision is reliable and effective.

The invention discloses a two-dimensional vibration auxiliary laser scanning in-situ detection system which comprises a servo guide rail, an X-axis guide rail and a servo guide rail connecting piece connected with the servo guide rail in a matched manner and further comprises a Y-axis voice coil motor, a laser displacement sensor, an X-axis voice coil motor and an X-axis movement platform. The servo guide rail is parallel to the X-axis guide rail and can slide back and forth along the X-axis guide rail and the servo guide rail connecting piece remains still in the X-axis direction. Due to the arrangement of the servo guide rail, the Y-axis voice coil motor connected with the servo guide rail connecting piece can remain still when the servo guide rail is pulled by the laser displacement sensor to move along the X-axis guide rail, the mass of the Y-axis voice coil motor cannot become the resistance of movement of the laser displacement sensor in the X-axis direction, and the power and the size of the X-axis voice coil motor do not need to be increased. By the adoption of the system, in-situ detection is achieved, the detection efficiency is good while accuracy is guaranteed, the anti-interference performance is good, and the system can be used on different occasions for detection of different targets.

The invention relates to a rheid leakage testing device and is characterized by comprising a case, a test-piece lock mechanism and an air-pressure balancing and testing system; the front panel of the case is provided with a power switch, a manual valve for selecting, an aeration timer and a test control element; the test-piece fastening mechanism comprises at least two groups of lock sleeve, cone plug, aeration cone tube, lock cylinder and electromagnetic valve; the air-pressure balancing and testing system comprises an observation tube arranged on the case, an air source pressure regulating valve arranged on one side of the case, a standard air bottle in the case, an air bag aerating tube communicated with the standard air bottle and the observation tube, and a test-side aerating tube connected with the observation tube. The invention has the advantages that whether the test-piece has leakage is tested by observing the change of air pressure inside the standard air bottle and the test-piece and whether bubbles are generated in the water in the observation tube, the automation degree is high, the testing operation is simple and quick, the test precision is reliable, the testing quality of the test-piece is improved, the test-piece is prevented from being contaminated in the testing process, and the product quality is ensured.

The invention provides an air tightness detection device for a sealing piece. The device comprises a sealing unit which comprises a mounting table and a pressing mechanism, wherein the mounting tableis provided with a plugging head, when the sealing piece is located on the mounting table, the plugging head can be embedded into an opening of the sealing piece to block the opening, and the pressingmechanism is used for being matched with the sealing piece in an abutting mode and pressing a part around the opening of the sealing piece on the plugging head. The device further comprises an air supply unit which is provided with an air supply pipe, air can be output along the air supply pipe when the air supply unit is started, the air supply pipe is used for being connected with the mountingtable or the sealing piece, when the sealing unit and the sealing piece are assembled, and the air supply pipe, the sealing unit and the sealing piece define a closed containing cavity. According to the detection device provided by the scheme, when the sealing piece is assembled with the detection device, the sealing piece and the detection device can form the tightly-sealed closed containing cavity, air can be supplied into the closed containing cavity so as to realize the detection of sand holes of the sealing piece in an air tightness detection mode, the risks of false detection and missingdetection are small, the sealing unit and the sealing piece are very simple and convenient to assemble and disassemble, and the detection cost is low.

The invention discloses a coal slime detection and dosing device for a concentration tank. The device comprises a PLC and a concentration tank, the PLC is electrically connected with a coal slime detection mechanism, the PLC is electrically connected with a turbidity detection mechanism, and the beneficial effects of the invention are that: the novel intelligent coal slime detection and automaticdosing system for the concentration tank is used, so that workers do not need to be on duty when the system is used, labor intensity can be effectively reduced, operation is simple, the automation degree is high during use, the detection precision and timeliness are is reliable, detection data is more representative, a flocculating agent can be added according to actual conditions during chemicaladding, chemical consumption is reduced, meanwhile, the frequency of coal slime discharged by an underflow pump can be mastered in real time through the turbidity detection mechanism, the concentration of underflow can be made to be low, and a slime water production system and a circulating water purification system are perfected.

The invention relates to an automatic leakage detector of a container vessel. The automatic leakage detector comprises a rack, wherein the rack is provided with a workpiece seat for placing a to-be-tested workpiece; the rack and/or the workpiece seat is provided with an inflation assembly for inflating the to-be-tested workpiece; and the rack is also provided with a transparent water tank which is used for immersing the to-be-tested workpiece to detect whether air leakage exists or not. The to-be-tested workpiece is fixed after being put into the workpiece seat, the transparent water tank automatically rises until the to-be-tested workpiece is completely immersed into water, meanwhile, the inflation assembly inflates the to-be-tested workpiece to carry out a leakage detection test, a hand-assisted operation is not needed in the leakage detection test process, and whether the to-be-tested workpiece leaks air or not is judged by visual inspection of naked eyes or the assist of image equipment, so that the detection efficiency is high and the detection accuracy is reliable and accurate.

The invention discloses a boarding tower of a cruise ship construction tool, which comprises a boarding tower main body structure, two supporting structures and a plurality of connecting plates, wherein the boarding tower main body structure is internally provided with a boarding ladder, and the boarding tower main body structure and a boarding ladder are of a detachable structure; at least one ofthe left side and the right side of the boarding tower main body structure is provided with a transportation elevator, each transportation elevator comprises an elevator shaft, one side of the elevator shaft is detachably connected with the boarding tower main body structure, the top of the elevator shaft is provided with a traction mechanism, the other side of the elevator shaft is provided withan elevator car, and the elevator car is dragged through the traction mechanism; the two supporting structures are respectively mounted on the front side and the rear side of the boarding tower mainbody structure; and the plurality of connecting plates are mounted on the boarding tower main body structure and/or the rear side of the elevator car, one end of each connecting plate is connected with a deck of the cruise ship, and the other end of each connecting plate forms a channel with the boarding ladder and/or the elevator car. According to the construction tool capable of transporting a lot of materials, energy and people, the construction requirement of the cruise ship deck is met, and the construction efficiency is improved.

The invention discloses a BCG-based non-contact heart rate monitoring method and system. According to the invention, a BCG acquisition module is fixedly installed outside a control module; the output end of the control module is connected with the input end of the BCG acquisition module; the output end of the BCG acquisition module is connected with the input end of the control module; a vibration sensor is fixedly installed at the input end of the BCG acquisition module; the output end of a processor module is connected with the input end of a data recording module; the output end of a data analysis module is connected with the input end of a data early-warning module; the output end of the data early-warning module is connected with the input end of a receiving terminal; the output end of the receiving terminal is connected with the input end of a display terminal; and a lifting wavelet module and a heart rate extraction module are arranged in the BCG acquisition module, so data acquired by the vibration sensor and the BCG acquisition module can be precisely analyzed and processed, and the stability of the data is improved.

The invention discloses automatic detection equipment for a proximity sensor. The automatic detection equipment comprises a control output assembly, a high-low temperature box and the proximity sensor, the control output assembly comprises a motor and an angular displacement sensor, the angular displacement sensor is connected with an output shaft of the motor in series, the output shaft of the motor is coaxially connected with a rotating shaft, the rotating shaft extends into the high-low temperature box, and a proximity sensor target is arranged on the rotating shaft; a mounting plate is arranged in the high-low temperature box, a proximity sensor is mounted on the mounting plate, and when the output shaft rotates to enable the proximity sensor target to be in a vertical state, a probe of the proximity sensor is attached to the proximity sensor target. Manual operation can be replaced, automatic detection of the proximity sensor is carried out in high and low temperature environments, and the detection efficiency and effect are improved.