60results about How to "Speed monitoring" patented technology

The invention discloses a velocity measurement system of a track bicycle, consisting of a signal detection circuit, a power circuit, a main controller, a voltage regulation circuit, a wireless communication module and a memory module. The processing procedure comprises the steps that the signal detection circuit acquires signals generated by movement of a chain and performs the primary process on the signal; and the main controller can save the parameters such as the velocity and the like, and can control the wireless communication module to send the parameters to the user upper computer so as to finish the real time monitoring of the velocity of the track bicycle through the further analyzing of the processed signals. The velocity measurement system can send and save the data in real time without the need of transforming the bicycle body, save the use cost, and is suitable for masses of users.

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 discloses a hydraulic pump rotational speed measurement device which is formed by a magnetic gear and a Hall effect element located beside the magnetic gear and radially aligning at the magnetic gear along the magnetic gear, and a cable is connected onto the Hall effect element. The hydraulic pump rotational speed measurement device has the advantages of being simple in structure, convenient to install and capable of being directly installed on a hydraulic pump to monitor hydraulic pump rotational speed.

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.

The invention discloses an active film unwinding device, which comprises a bracket, an unwinding mechanism arranged on the bracket and a guide roller; the unwinding mechanism includes a fixed frame, an unwinding assembly arranged on the fixed frame, a transitional roller and an unwinding tensioning tube; the fixed frame is provided with a transitional roller mounting frame for assembling the transitional roller; the transitional roller mounting frame is also provided with a speed test feedback mechanism; the unwinding assembly includes a bearing seat arranged on the fixed frame, a bearing in a bearing seat, an air expansion shaft with two ends supported by the bearing, and a servo motor for driving the air expansion shaft to rotate as well as a synchronous belt wheel; and the speed test feedback mechanism is connected with the servo motor. The active film unwinding device disclosed by the invention is suitable for unwinding of film easy to stretch and deform; and when the film is unwound, the film unwinding speed is ensured to be the same as the transmission speed of a tricot machine by the speed test feedback mechanism, thereby avoiding film stretching and deformation.

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 discloses a rolling rock breaking drill bit with a working face state and a hob operation state monitoring function. The rolling rock breaking drill bit comprises a rolling rock breakingdrill bit body, a temperature sensor, a rotating speed sensor, a gas sensor, a laser range finder and a data acquisition system, wherein the temperature sensor, the rotating speed sensor, the gas sensor, the laser range finder and the data acquisition system are fixedly installed on the rolling rock breaking drill bit body; and the data output end of the temperature sensor, the data output end ofthe rotating speed sensor, the data output end of the gas sensor and the data output end of the laser range finder are connected with the data input end of the data acquisition system, and the data output end of the data acquisition system is connected with the data input end of a ground console. According to the rolling rock breaking drill bit, the temperature sensor, the rotating speed sensor,the gas sensor, the laser range finder and the data acquisition system are reasonably arranged on the rolling rock breaking drill bit body; and the data acquisition system can collect analog data acquired by the temperature sensor, the rotating speed sensor, the gas sensor and the laser range finder, so that the temperature, failure conditions and drilling working face gas concentration of a hob on the rolling rock breaking drill bit body are realized.

The invention relates to a high speed violation prompting system, which comprises a front induction line and a rear induction line for monitoring the setting of lanes in a road section, wherein both the front induction line and the rear induction line are connected with a control center, the control center is connected with a cargo overload detection device, a personnel overload detection device,a high-definition camera and a display screen, the control center is connected with the cloud server through a wireless network, and the cloud server is connected with a traffic supervision department. The high speed violation prompting system can effectively monitor various violation behaviors and prompt the vibration vehicle owner in a visual text form, thereby effectively avoiding the occurrence of accidents.

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 refrigerator which comprises a refrigerator body, a door body, a trigger switch and a controller, wherein a compartment is defined in the refrigerator body; the door body is mounted on the refrigerator body and used for opening and closing the compartment; the trigger switch is used for switching the refrigerator between a normal working mode and a rotation speed monitoring mode; and the controller is used for controlling a compressor to operate, and when the trigger switch switches the refrigerator to the rotation speed monitoring mode, the controller obtains the rotation speed of the compressor according to a square signal output by the controller, and sends the rotation speed of the compressor to the display device of the refrigerator for display. By adopting the refrigerator provided by the embodiment of the invention, the rotation speed of the compressor can be monitored in real time without a detection instrument, which brings convenience for a user or testing person to test the performance of the refrigerator, and the refrigerator is time-saving and labor-saving and good in applicability.

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.

A ring spinning machine (1) with multiple spinning positions. Spindles (2) of the spinning positions are frictionally driven by a tangential belt (3) which is circulated during a spinning operation. The ring spinning machine (1) is characterized in that the ring spinning machine (1) is equipped with means for monitoring the belt tension of the tangential belt (3), the device has sensor means (12,14) and a belt tensioning device (27, 15), the belt tensioning device (27, 15) is connected to a control device (13) that processes the measured values of the sensor device (12, 14) and can be controlled such that the belt tension of the tangential belt (3) is automatically maintained at the set optimum value throughout the spinning operation of the ring spinning machine (1).

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 invention discloses a detection system and method for an engine gas turbine starter. The system comprises a control unit which is used for receiving a detection signal and transmitting the detection signal to a display terminal, a rotating speed detection module which is used for detecting the rotating speed of an air compressor and the rotating speed of a free turbine through an external rotating speed sensor to obtain rotating speed signals of the free turbine and the air compressor, a pressure detection module which is used for detecting the pressure of a lubricating oil through a pressure detector to obtain a pressure signal of the lubricating oil, a temperature detection module which is used for detecting the exhaust temperature of an engine through a temperature detector to obtain a temperature signal, a vibration detection module which is used for detecting the engine through a vibration sensor to obtain a vibration signal, and a microswitch detection module which is used for detecting whether a microswitch coil is normally switched on or not by supplying power to the microswitch coil so as to obtain a switching signal. The system is advantaged in that key parameters such as pressure, rotating speed, temperature, vibration and the like of the gas turbine starter are monitored, and the gas turbine starter has data recording and storing functions so as to diagnose a technical performance state of the gas turbine starter.

The invention discloses a self-charging integrated rotating machinery rotating speed sensor and a rotating speed calculation method thereof. The system comprises a power generation device, a rectifying circuit, a charging circuit module, a signal acquisition module and a signal processing module. The power generation device is matched with a gearbox rotating main shaft to generate alternating current; the power generation device is connected with the rectifying circuit; the rectifying circuit is connected with the charging circuit module; the charging circuit module is connected with the signal processing module, the signal acquisition module is connected with the power generation device, the signal acquisition module acquires voltage signals of the power generation device, the signal acquisition device is connected with the signal processing module, and the signal processing module calculates the rotating speed of the gearbox rotating main shaft according to the received voltage signals. Kinetic energy is converted into electric energy through the power generation device, a stable and reliable power source is provided for a conversion sensor, self power supply is achieved, the power generation device is installed on one side of the rotating main shaft in a non-contact mode, installation is convenient, and the rotating main shaft cannot be affected.

The invention comprises: a fan; a fan-speed control circuit and a fan-speed indication circuit; said fan-speed indication circuit comprises a filter unit, a voltage-controlling unit, at least one indication lamp and a diode corresponding to the indication lamp; said fan-speed control circuit outputs an indication signal to ground via the filter unit and voltage control unit; the cathode of said diode is connected to the filter unit and the voltage control unit, and the anode of said diode is connected to the anode of the indication lamp; the cathode of the indication lamp is grounded.

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 method for detecting the action speed of a circuit breaker. The switching-on and / or switching-off process of the circuit breaker is linearly mapped into the process that an anti-dazzling screen moves along a preset track through the anti-dazzling screen which is mechanically coupled with a contact system of the circuit breaker; pulse signals generated by the shading sheetthrough the photoelectric switches in the closing and / or opening process of the circuit breaker are obtained through the photoelectric switches arranged at different positions on the preset track; and the pulse signals are processed to obtain the speed information when the anti-dazzling screen passes through a plurality of different segmentation intervals, and finally fitting of the speed information is carried out to obtain the speed change condition of the closing and / or opening process of the circuit breaker. The invention further discloses a circuit breaker action speed detection device and a circuit breaker. Compared with the prior art, The method is advantaged in that real-time monitoring can be carried out on the speed change conditions of different stages in the switching-on and switching-off process of the circuit breaker, implementation is easy, and cost is low.

The invention discloses an engine speed monitoring system which comprises an accessory drive casing (1); a transmission gear (2) is arranged in the accessory drive casing (1) through a supporting bearing (3); a magnetoelectric tachometric transducer (4) with the main center line parallel to the axis of the transmission gear (2) is mounted on the accessory drive casing (1); an induction boss (5) is arranged on the surface of the magnetoelectric tachometric transducer (4); the center line of the induction boss (5) is vertical to the main center line of the magnetoelectric tachometric transducer (4); the induction boss (5) directly faces gear teeth of the transmission gear (2). The magnetoelectric tachometric transducer is compact in structure and small in size; an additional phonic wheel is not required to convert speed signals, and not only can the engine speed be monitored, but also the running performance and the reliability of an engine can be ensured.

The invention discloses an anti-slip belt induction device. The anti-slip belt induction device comprises fixed frames, a control cabinet, a controller, a motor, a protective cover and a mounting rack. The protective cover is fixed to the outer wall of one side of one fixed frame. The control cabinet is mounted on the outer wall of the upper end of the protective cover through supporting blocks. The motor is mounted on one side of the interior of the protective cover. The outer wall of a rotary shaft is sleeved with a driving roller. A buzzer is mounted on the inner wall of one side of the protective cover. Reinforcing rods are welded to the inner walls of the bottom ends of the fixed frames. A speed sensor is rotatably mounted on the inner wall of the upper end of the mounting rack. The control cabinet is internally provided with the controller and a speed regulator. The anti-slip belt induction device carries out synchronous monitoring on the rotating speed of a conveyor belt and therotating speed of the motor through the speed sensor and the speed regulator correspondingly so as to judge whether the conveyor belt slips or not, reduce the rotating speed of the motor and increasefriction force between the conveyor belt and the driving roller. Meanwhile, the anti-slip belt induction device can give an alarm to inform working staff to regulate the quantity of conveyed materials in time.

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 method for monitoring abnormal operation of a fan, and the method comprises the steps: enabling the power supply voltage of the fan to be connected to an ADC through resistance voltage division, so as to monitor the power supply voltage in real time through the ADC; connecting a PWM signal generated by the BMC to a fan and a BULK step-down circuit, adjusting the PWM signal through the BMC to control the rotating speed of the fan, converting the PWM signal into a fixed output voltage through the BULK step-down circuit, and monitoring the output voltage through an ADC;enabling the BMC to communicate with the ADC through the SMbus, and monitoring the abnormal information of the rotating speed of the fan and the sampling values of the power supply voltage and the output voltage monitored by the ADC; and determining whether the fan operates abnormally or not and an abnormal source when the fan operates abnormally based on the fan rotating speed abnormal information, the power supply voltage and the output voltage. The invention further discloses a circuit and a device. According to the method, circuit and device for monitoring abnormal operation of the fan, when the rotating speed of the fan is abnormal, the fault source can be accurately judged.

The invention relates to a method for monitoring a chain block block and a chain block block, the drive motor of which is connected to a gearbox (14) at the output end through a slip clutch (14). In order to achieve a reliable operation mode of the chain block block, the present invention proposes to measure the speed of the gearbox (7) through the sensor (18), and the measured speed of the gearbox is communicated in the control device (19) with the speed of the drive motor (2). The operating speed of the drive motor (2) determined from the operating data is compared and the speed of the gearbox (7) and the operating speed are determined, taking into account tolerances and, if necessary, the transmission ratio of the gearbox (7). Switch off the drive motor (2) when there is a deviation.

The invention discloses a non-contact angle tracking system and method based on passive RFID (Radio Frequency Identification), which are used for measuring the rotation angle of a rotating shaft in an industrial environment. The system comprises a passive angle sensor, an angle sensing all-in-one machine and a data processing platform, wherein the angle sensing all-in-one machine is provided with an RFID reader and a linear polarized antenna; the passive angle sensor comprises a communication module pasted with an RFID tag and a metal reflection object used for reflecting rotation characteristics. The angle sensing all-in-one machine continuously communicates with the passive angle sensor to obtain label signal data returned by the passive angle sensor and transmits the data to the data processing platform, and the data processing platform constructs a polarization model according to data characteristics to quantify the relation between the rotating shaft rotation angle and metal object reflection signal energy. Therefore, the rotation angle at each moment is calculated, and angle tracking is realized. According to the invention, a non-contact sensing technology is adopted, a rotating shaft does not need to be contacted, and accurate rotation angle tracking is realized by obtaining passive angle sensing.

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.