59results about How to "Speed monitoring" patented technology

The invention provides a method and a device for monitoring speeds of websites, belonging to the technical field of computers. The method comprises the following steps: acquiring parameters of monitored pages; utilizing an iframe container to load the monitored pages in accordance with the parameters; and when the loading of the monitored pages is judged to be completed, invoking scripts to acquire loading time. The device comprises a parameter acquisition module, a loading module, a judgment module and a time acquisition module. With the adoption of the method and device provided by the embodiment of the invention, the speeds of the websites are monitored by using real network environments of users without deploying testing servers everywhere. By using the method and the device provided by the invention, the speeds of the websites can be monitored in real network access environments of the users, thereby reducing monitoring cost effectively.

The invention discloses a braking simulation test device and method for a km deep mine hoist disc brake. The device comprises a flywheel system, a braking system and a sensing monitoring system. The flywheel system comprises a frequency converter (1), a motor (2), a jaw clutch (3), a gear coupling (6), a rotation shaft (8) and a flywheel assembly. The braking system comprises a braking disc (19),a braking shoe (18), a shoe clamp (13), a shoe clamp connection plate (20), a connection component (16), a sliding block guide rail (11), a hydraulic cylinder (21) and a hydraulic cylinder holder (17). The sensing monitoring system comprises a rotation speed sensor (5), a vibration sensor (10), an infrared temperature sensor (12), a three-dimensional force sensor (14) and a positive pressure sensor (16). According to the device and the method, braking performance of emergency braking of the mine hoist disc brake can be tested, and practical braking condition of the mine hoist disc brake can betruly simulated.

The invention relates to an experiment system and method for the rock breaking efficiency analysis of a TBM disc cutter, and the system comprises a data collection box which is used for recording the data collected by a sensor; a rotor part which comprises an upper rod piece and a press machine; a rotor part which comprises a central rod piece, an M-shape cutter disc, and a reduced scale hob, wherein the central rod piece is connected to the bottom of the upper rod piece through a connection part and rotates relative to the axis of the upper rod piece, two door openings of the M-shape cutter disc are respectively provided with an installation shaft, installed in a lateral direction, in a fixed manner, and the reduced scale hob is disposed on the installation shafts and can freely roll in the radial direction of the installation shafts; a monitoring system which comprises a rotating speed sensor for measuring the rotating speed of the reduced scale hob and a pressure sensor which is used for measuring the changes of pressure withstood by the installation shafts in a rotating cutting process; and a power system which supplies power to the M-shape cutter disc. The experiment system is smaller in size, and can be widely used on various types of press machines. According to the data recorded by the data collection box, the system can obtain the rock breaking efficiency through combining with an efficiency analysis method.

This invention relates to a full auto-control method and its device for controlling the discontinuous supply and continuous operation of a motor of a beam running pumping unit. A data collection unit tests the voltage and current of the motor, a master control unit determines the cut-off times in one work period and the electric parameter at the cut-off time when supplying electricity continuously, the operation parameter of the motor is monitored to see if it has changed greatly to determine if it has returned to the continuous supply state or the discontinuous protection state at the discontinuous protection state. The speed of the motor is monitored, the cut-off time and times are regulated to keep them at the normal sphere, the supply is switch on when the speed of the motor approaches to synchronous speed and the conduction angle of the thyristor is controlled to avoid impact of the current.

The invention discloses electronic equipment and a fan control method. The electronic equipment comprises a baseboard management controller and at least one fan module, wherein the fan module comprises a fan interface, a fan rotor, and a rotating speed monitoring controller which is correspondingly connected with the fan interface and the fan rotor; the fan interface is used for receiving a firstsignal sent by the baseboard management controller through a first interface, and the first signal is used for controlling the current target rotating speed of the fan rotor; and the rotating speed monitoring controller is used for acquiring a second signal of the fan rotor, the current actual rotating speed of the fan rotor is determined based on the second signal, so that the monitoring load ofthe baseboard management controller is reduced.

The invention provides a velocity measurement apparatus and method of a single photon avalanche detector linear array camera. The velocity measurement apparatus and method of a single photon avalanchedetector linear array camera are characterized in that single photon avalanche detectors are used to form a linear array camera for an imaging device to measure the velocity, and the velocity of a moving object is calculated by means of the known size of the object, the corresponding vertical pixel number in the image, the camera single row shooting integral time and the camera shooting angle; the unit of the single photon avalanche detector linear array includes a single photon avalanche detector, a quenching and resetting circuit, a counter and a dwell vessel; the output terminal of the single photon avalanche detector is connected with the quenching and resetting circuit, and the counter successively; the output terminal of the counter is connected with the dwell vessel; and the singlephoton avalanche detector utilizes a single photon avalanche diode. The velocity measurement apparatus and method of a single photon avalanche detector linear array camera has the advantages of realizing velocity measurement in the daytime with strong illumination, the night with weak illumination and the extremely dark environment, and being more accurate in velocity measurement.

The invention discloses a coal mine ventilator online monitoring and diagnosis device which comprises a rotation speed signal detection unit, a processor, a storage module, a display module and a monitoring and diagnosis upper computer. The processor comprises a data communication module. The rotation speed signal detection unit and the display module are connected with the processor. The processor is connected with the monitoring and diagnosis upper computer through the data communication module. The rotation speed signal detection unit detects rotation speed data of a ventilator and outputs the rotation speed data to the processor. The processor stores the received rotation speed data in the storage module and sends the rotation speed data to the monitoring and diagnosis upper computer. The monitoring and diagnosis upper computer conducts diagnosis according to the rotation speed data and returns a diagnosis result to the processor. The processor receives the diagnosis result and outputs the diagnosis result through the display module. The coal mine ventilator online monitoring and diagnosis device has the advantages of being accurate in diagnosis, convenient to use, instant in detection, flexible in implementation, simple in structure and low in cost.

The invention discloses an offshore wind turbine non-contact impeller rotating speed monitoring method based on underwater sound signals, and relates to the technical field of wind power. A hydrophoneis used for collecting offshore wind turbine operation period underwater noise close to a wind turbine in real time, a stochastic resonance method is used for extracting the line spectrum frequency of the operation period underwater noise, and then the frequency is used for inverting the impeller rotating speed of the wind turbine. And compared with a preset threshold value, when it is found thatthe rotating speed of the impeller is abnormal, the system gives an alarm and stops the running of the draught fan so as to guarantee the safety of the wind turbine. A monitoring instrument does notneed to be installed on a rotating shaft or other firmware of the wind turbine, the risks caused by abrasion, falling and the like due to the fact that an existing monitoring instrument needs to makedirect contact with the wind turbine for a long time are avoided, and the impeller rotating speed can be effectively monitored; the real-time changes of underwater noise in the offshore wind farm operation period can be tracked and monitored, key parameters are provided for the influence evaluation of marine environment noise, and the method has the advantages of being simple, low in cost, convenient to arrange and the like.

The embodiment of the invention discloses a multifunctional airplane brake cooling control device, which comprises a brake cooling fan, a tire pressure sensor, an airplane wheel speed sensor and a brake cooling motor, wherein a central shaft hole of the airplane wheel speed sensor penetrates through a long shaft of the brake cooling motor and is fixedly arranged at one end of the brake cooling motor; the airplane wheel speed sensor is used for monitoring the speed of an airplane tire; a central shaft hole of the tire pressure sensor penetrates through the long shaft of the brake cooling motorand is fixedly arranged at one end of the airplane wheel speed sensor; a pressure sensor connected with the airplane tire is arranged in the tire pressure sensor and is used for synchronously rotatingwith the airplane tire so as to monitor the pressure of the airplane tire; the brake cooling fan is installed at the end of the long shaft of the brake cooling motor and used for being driven by thelong shaft of the brake cooling motor to rotate to generate air flow for conducting heat dissipation and cooling on the airplane tire. According to the embodiment of the invention, the integration ofairplane tire pressure detection, airplane wheel rotating speed detection and brake cooling functions is realized.

The invention discloses a vehicle dashboard failure alarming device which comprises a driving computer, wherein the output end of the driving computer is unidirectionally and electrically connected with a voice data storage unit; the voice data storage unit is unidirectionally and electrically connected with a speaker; and the output end of the driving computer is bidirectionally and electricallyconnected to a standard data storage unit, a failure code storage unit, a display screen and the input end of an OBD. Through the arrangement of the driving computer, the voice data storage unit, thespeaker, the standard data storage unit, the failure code storage unit, the display screen, the OBD and a sensor module, the vehicle dashboard failure alarming device can alert a driver by using the speaker to perform a voice broadcast when the OBD detects a failure of a vehicle, thereby enabling a dashboard to have the function of voice broadcasting, and solving the problem that an existing vehicle dashboard is prone to distract the driver by only displaying failure information of the vehicle on the display screen and may cause a traffic accident in the worst case.

The invention discloses a rock perforating machine with a drill bit convenient to replace. The rock perforating machine comprises a base, a hydraulic push rod and a supporting plate, wherein an electric control box is welded to the top of the base, the top of the base is movably connected to the hydraulic push rod through a connecting piece, and the top end of the hydraulic push rod is movably connected to the supporting plate through a bolt, mounting plates are mounted on the two sides of the supporting plate, guide rings are arranged at the tops of the mounting plates, a control motor is mounted on one sides of the mounting plates through bolts, supporting sliding rods are mounted on the inner sides of the mounting plates through bolts, limiters are mounted on the outer sides of the supporting sliding rods, and tightening pieces are mounted at the tops of the limiters in a penetrating mode. According to the machine, limiting stoppers are installed on the outer sides of the supportingsliding rods, a user presets a needed depth of a large hole, then the tightening pieces are moved to designated positions, the limiting stoppers are fixed through the tightening pieces, the limitingstoppers re used for stopping in a perforating process, and the drilling accuracy is guaranteed.