30results about How to "Monitor Vibration" patented technology

The invention is applicable to the field of the passive and wireless technology, and provides a passive wireless sensing device, which comprises a reed switch, a microcontroller, an energy management control unit, a wireless transceiver, a photovoltaic energy collector and an energy storage unit. The energy storage unit is connected with the energy management control unit, and the photovoltaic energy collector is also connected with the energy management control unit. The device also comprises a vibration/displacement/inclination sensor which is connected with the microcontroller and is used for monitoring whether glass is broken, whether building equipment vibrates and whether the sensing device is moved. The wireless transceiver is used for receiving and transmitting signals sent by the vibration/displacement/inclination sensor through the microcontroller. The invention can be used for monitoring the breakage of the glass, the vibration of the building equipment such as doors, window and the like and the movement of the sensing device, and the functions of the invention are broadened.

The invention relates to a rotating platform for testing the unfolding of a missile wing under a multi-angle high-speed rotating condition of a missile body, and belongs to the field of high-speed rotating platform experimental research designs. According to the rotating platform, the angle of a work piece is regulated by adopting a motor screw rod transmission mechanism; a motor shaft and a work piece rotating shaft adopt an integrated shafting design; the defect of rotating speed loss during a commonly used belt transmission process is eliminated; a transmission structure is simplified; the stability is improved; the overall structural integration is realized. The missile body is fixed at the two ends and is connected through a bracket, so that the missile body can be ensured to rotate at a high speed. In addition, the rotating speed can also be used for researching the high-speed rotating characteristics of the missile bodies with different sizes through simple transformation. A missile wing unfolding testing device is arranged on a rotating bracket; the unfolding and locking conditions of the missile wing can be represented through the movement of a fixed pin. To sum up, the rotating platform provides a safe and reliable research platform for researching the high-speed rotating characteristics of the missile body at different angles and testing the unfolding and locking of the missile wing, so that the rotating platform has a very good use value.

The invention discloses a novel Pelteobagrus fulvidraco transportation method based on intelligent control. According to the invention, Pelteobagrus fulvidraco is narcotized with anesthetics and placed into a live fish box; the interior of the box body of the live fish box comprises a water body and a boat body floating on the surface of the water body; the interior of the boat body is provided with a core control member which is connected with dissolved oxygen, pH and temperature sensors arranged in the interior of the water body and with vibration, noise and air-quality sensors which are arranged at the exterior of the water body and used for capturing environmental information of the interior of the live fish box in real time; the interior of the water body is also provided with a temperature control device; the boat body is provided with a negative-ion air purifying device; in addition, a terminal device is arranged and used for receiving and processing signals of sensors and controlling the boat body to move; thus, accurate control and adjustment of the quality of water in the transportation process of the Pelteobagrus fulvidraco is realized through evaluation of the transportation water quality of the Pelteobagrus fulvidraco by artificial neural network modeling. The method provided by the invention is unique and practical, realizes reliable and comprehensive informationacquisition, thereby guaranteeing the long-distance transportation safety of the Pelteobagrus fulvidraco.

The invention relates to the technical field of acceleration sensors and particularly relates to a pendulum type three-dimensional vibration acceleration sensor. The pendulum type three-dimensional vibration acceleration sensor comprises a shell, a sphere and a rope body, wherein the ball body and the rope body are both arranged in the shell, one end of the rope body is connected with the top of the interior of the shell, the other end of the rope body is connected with the ball body, an inner surface of the shell is plated with an electrode material, the ball body is a charged charged ball body, and the material of the ball body is different from that of the electrode material. The pendulum type three-dimensional vibration acceleration sensor is advantaged in that vibration energy of instrument vibration is converted into electric energy, an auxiliary power supply does not need to be carried, use is more convenient, a vibration state of the instrument can be monitored at the same time, and stability is better.

The invention discloses an ensiling machine cutter clearance adjusting and automatic sharpening device which comprises a clearance adjusting mechanism and an automatic sharpening mechanism. The clearance adjusting mechanism is provided with a fixed blade feeding electric push cylinder, a stay-wire displacement sensor, a stress sensor and a vibration sensor, and a controller controls working of thefixed blade feeding electric push cylinder; the automatic sharpening mechanism is provided with an electro-hydraulic push rod and a sharpening driving electric push cylinder, the driving end of the electro-hydraulic push rod is connected with fixed sharpening stone, the electro-hydraulic push rod pushes the sharpening stone to be close to or away from a movable blade, and the sharpening driving electric push cylinder drives the sharpening stone to be in reciprocating motion along the length direction of the movable blade; the automatic sharpening mechanism is provided with a displacement sensor for monitoring motion of the electro-hydraulic push rod, and the displacement sensor is mounted in hydraulic oil inside the electric push hydraulic cylinder. A clearance between the movable blade and the fixed blade can be adjusted automatically, the sharpening mechanism is controlled by the automatic sharpening system to complete grinding of the movable blade, and cutting-up effect is ensured.

The invention provides a folding rudder capable of monitoring and optimizing the flutter phenomenon. The folding rudder comprises a folding module, a monitoring module, a processing and analyzing module and a driving module. According to the folding rudder, the flutter phenomenon is relieved or eliminated in a passive monitoring and active intervention mode, the real-time performance is achieved, the vibration condition of the folding rudder in the flight process of a guided weapon can be analyzed more accurately, and in addition, when the folding rudder of the guided weapon flutters, the problem can be solved in an active intervention mode, so that structural damage is avoided; and therefore, the vibration condition of the folding rudder in the flight process of the guided weapon can be monitored in real time, in addition, a computer analyzes and processes the data, so that the vibration of the folding rudder is relieved or counteracted in an active intervention mode, and therefore the flutter phenomenon is effectively prevented. The folding rudder has the advantages of being low in design cost, high in real-time performance, high in reliability, convenient in installation and free from influence on the original structure and equipment of the guided weapon.

The invention discloses an anemograph support capable of being fixed on an inhaul cable. The support comprises a fixing device, a support assembly connected with the fixing device, a position testingassembly and an acceleration testing assembly, the fixing device comprises a hoop enclosed by a flexible metal sheet, a latticed magnet embedded on the inner surface of the metal sheet and a high-strength bolt for fixing the metal sheet; the support assembly comprises an outwards-extending rod, an anemograph support and a nut matching the end of the outwards-extending rod in a threaded mode; the position testing assembly comprises a position sensor; the acceleration testing assembly comprises a three-way acceleration sensor. The support can be fixed to any position of the inhaul cable, which can guarantee that an anemograph is vertical for the stay cable forming any angle with the horizontal plane; the position of a measuring point is easy to control, the relation between the wind speed ofthe measuring point and inhaul cable vibration is obtained while the influence of inhaul cable vibration is conveniently removed, and the wind field distribution characteristic around the inhaul cable can be better tested.

The invention discloses a permanent magnet motor control method of a nonlinear model. A Hall position sensor, a temperature sensor and a vibration sensor are included, vector control of a permanent magnet motor is realized through coordination of the Hall position sensor and a central processing module, and intelligent over-temperature protection and fault analysis of a permanent magnet are realized through effective detection of the temperature sensor and the vibration sensor. According to the invention, through rotor position information, motor vector control is realized, and temperature control is effective; the temperature and vibration of the motor are monitored through the temperature sensor and the vibration sensor, intelligent over-temperature protection and abnormal monitoring ofthe motor are realized, motor faults are reduced, and the operation safety is improved.

The invention discloses a train compartment vibration monitoring method and a vibration signal feature library establishment and application method. A non-intrusive train compartment vibration monitoring method is adopted, only a vibration signal of a total measurement point in a train compartment needs to be obtained during actual monitoring, sensor redundancy is avoided, cost is saved, and train weight reduction is facilitated. The method can accurately and truly reflect the relation between the vibration source position and the phase deviation and amplitude attenuation, can monitor the vibration condition of an unknown vibration source, can recognize the abnormal vibration of the vibration source, and provides a basis for abnormal vibration processing. According to the method, the reconstruction of the vibration source signal can be realized on the basis of only measuring the vibration signal of the total measuring point, so that the real-time updating of the multi-element vibration signal feature library can be realized, and the multi-element vibration signal feature library can provide a data basis for vibration signal optimization decomposition, vibration signal image identification, abnormal vibration signal identification and the like.

The invention belongs to the technical field of civil engineering, and discloses a civil engineering damping device and a control method thereof. The civil engineering damping device comprises a signal acquisition module, a communication module, a central control module, a data analysis module, a damping control module, a comprehensive evaluation module, an abnormity early warning module, a powersupply module, a data storage module and a display module. The civil engineering damping device is simple in structure, rigidity does not need to be added to a main building structure, the problem that the initial rigidity of a damper is difficult to match with the lateral rigidity of the structure is effectively solved, the number of reinforcing bars of shear walls, beams and columns and the section size of components are reduced, and cost can be effectively saved; and the civil engineering damping device is suitable for anti-seismic windproof of a newly-built civil structure, has a good effect on anti-seismic reinforcement and post-earthquake maintenance of an existing building after an earthquake, is high in automation degree, reduces the workload of personnel, and can be used and popularized.

The invention discloses an intelligent subway detection mechanism based on train advancing vibration pulse wireless charging. The mechanism comprises a vibration sensor arranged on a vehicle body, the vibration sensor comprises a cavity, an upper connecting rod is arranged on the upper portion of the cavity in a penetrating mode, the lower end of the upper connecting rod is connected with a permanent magnet, the permanent magnet comprises a main permanent magnet, and the outer side of the main permanent magnet is sleeved with a primary coil; the end part of the primary coil penetrates through the upper connecting rod and is electrically connected with a current controller; the outer side of the cavity is sleeved with a secondary coil, and the secondary coil is electrically connected with a rectifier, a controller and an energy recoverer in sequence; the current controller, the rectifier, the controller and the energy recoverer are all arranged in a shell, and the energy recoverer is connected with a monitoring device. The problem that in the prior art, vehicle body working condition monitoring is not flexible enough can be solved, the structure is simple and reliable, the adjustability is high, and the detection speed is high.

The invention relates to a vibration alarming system for a full-automatic washing machine. The vibration alarming system comprises a safety rod assembly and a micro switch assembly positioned on one side of the safety rod assembly, wherein the safety rod assembly comprises a safety rod, a safety rod base, a first seal ring and a second seal ring. The first seal ring and the second seal ring are positioned in the middle of the safety rod base, and a reset spring is fixedly arranged between the first seal ring and the second seal ring. A roller is arranged at one end of the safety rod, the other end of the safety rod sequentially penetrates through the centers of the first seal ring and the second seal ring, and the two ends of the safety rod are connected with the inner wall of the safety rod base respectively through the first seal ring and the second seal ring. One end with the roller, of the safety rod is close to a case body, and the other end of the safety rod is close to the micro switch assembly. By means of the vibration alarming system, the situation that vibration exceeds a limit value in the dehydration process of the washing machine can be effectively prevented, and smooth dehydration operation of the washing machine can be ensured.

The invention discloses an anti-vibration disc cutting mechanism, a disc cutting machine and a control method of the disc cutting machine, and belongs to the technical field of stone machining mechanical equipment. The anti-vibration disc cutting mechanism comprises a circular saw blade and a saw blade rotating shaft used for driving the circular saw blade, the center of the circular saw blade is fixedly installed at one end of the saw blade rotating shaft, and the saw blade rotating shaft is further provided with a disc fixing assembly used for fixing the non-center position of the circular saw blade. The control method comprises the steps that the cutting machine is started, a horizontal air cylinder is controlled to adjust the circular saw blade to the designated transverse position, the circular saw blade enters a downward feeding mode, and cutting is started to reach the designated depth; the circular saw blade enters a forward feeding mode, and is continuously cut to a specified distance; and the saw blade is kept rotating continuously, and the saw blade of the cutting machine is lifted to complete one-time cutting. The anti-vibration disc cutting mechanism, the disc cutting machine and the control method of the disc cutting machine have the beneficial effects that the non-central position of the circular saw blade is fixed aiming at the problems that the circular saw blade is prone to vibration in the operation process and is not stable enough, the stability of the overall structure of the circular saw blade is enhanced, the problems of vibration and saw blade collapse are not prone to occurring, and higher safety is achieved.

The invention discloses a vibration abnormality diagnosis method and system for an intelligent main shaft, and the method comprises the steps: sleeving a vibration pickup ring and a fixed ring on a main shaft, respectively arranging cantilevers at the front, rear, left and right sides of the vibration pickup ring, arranging a light path corresponding to the cantilevers on the fixed ring, and respectively arranging a laser and a photoelectric detector at an incident port and an emergent port of the light path; and arranging a fracture into which the cantilever is inserted in the optical path. The vibration pickup ring can pick up vibration of the main shaft in the horizontal direction and the vertical direction in the radial plane, the vibration pickup ring can drive the cantilevers to movein the fracture along with vibration of the main shaft, transmission of light in a light path is interfered, and the intensity of light received by the photoelectric detector is changed. In this way,the light intensity received by the photoelectric detector can be collected, the light intensity change is calculated, a mapping relation between the light intensity change and the vibration displacement is obtained through calibration and least square method fitting, and then the vibration condition of the main shaft in the radial plane is obtained according to the mapping relation. And the vibration abnormity of the main shaft is diagnosed according to the obtained vibration condition.

The invention discloses a mobile terminal building collapse alarm system and method based on a location technology. The hardware comprises an MEMS acceleration sensor, an A/D conversion circuit, an MCU, a memory, a SIM card, a communication circuit, a communication antenna, an intermediate relay, a loudspeaker, a positioning circuit and a positioning antenna. The MEMS acceleration sensor is connected with the MCU through the A/D conversion circuit. The SIM card and the communication antenna are embedded in the communication circuit. The communication circuit is directly connected with the MCU. The positioning antenna is embedded in the positioning circuit. The positioning circuit is directly connected with the MCU. The coil of the intermediate relay is directly connected with the MCU. The loudspeaker is connected with a storage battery through the intermediate relay. The MEMS acceleration sensor transmits vibration data to the MCU. After the MCU determines that a building vibrates, a pin is closed, and the power supply of the coil of the intermediate relay is turned on. After the coil is electrified, the intermediate relay is closed. The electrified loudspeaker plays the prompt tone that the building has the risk of collapse. People can urgently evacuate from the building the first time after hearing the prompt tone.