34results about How to "Work status impact" patented technology

The invention discloses a power transformer running state real-time monitoring method based on power consumption detection, and belongs to the technical field of power transformer safety running. The method of the invention is characterized by comprising a monitoring system and including a step 1001 of obtaining current and voltage signals of a power transformer; a step 1002 of obtaining input end active power and output end output power; a step 1003 of obtaining a normal power consumption value; a step 1004 of obtaining a power deviation percentage; a step 1005 of executing a step 1006 if being in a serious state, and executing a step 1007 otherwise; the step 1006 of sending out a tripping command; the step 1007 of executing a step 1009 if being in an abnormal state, and executing a step 1008 otherwise; the step 1008 of executing the step 1009 if running in a critical state, and executing a step 1010 otherwise; the step 1009 of sending out an alarm signal; and the step 1010 of continuing running. The power transformer can be evaluated in the actual running, and the reliability is substantially improved.

The invention discloses a method of controlling power-on of a multi-node server system and relates to the field of universal server power supply; the method comprises: setting a logic 'AND' processing unit on a system medium plate of the multi-node server system, subjecting power-on EN signals of a plurality of server nodes to logic 'AND' operation, outputting a system power-on EN signal SYS_EN, using the signal SYS_EN to enable the control of P12V output of a PSU (power supply unit) so as to control power-on of the server nodes. Power-on or power-off action is done for any one or more server nodes in a four-component server system according to the method, working state of other server nodes may not be affected, and high availability and reliability of the system are guaranteed.

The invention discloses a method for implementing a ship-navigation radar transmitting and receiving system. The method includes a transmitting aspect and a receiving aspect. An FPGA (field programmable gate array)-based process for controlling a ship-navigation radar transmitter is provided in the transmitting aspect, trigger pulses are generated via an FPGA, are transmitted through a buffer-stage circuit and a driving circuit and then are boosted to obtain pulsed high voltages by a pulse transformer, the pulsed high voltages are supplied for a magnetron, and radar electromagnetic waves are transmitted by the magnetron at corresponding frequencies. A ship-navigation radar intermediate-frequency digital module which can be directly connected with the FPGA is implemented in the receiving aspect, circuits of a logarithm amplifier, the buffer-stage circuit, an analog-to-digital conversion circuit and the like are integrated via reasonable circuit layout and shielding structures to obtain the module, analog intermediate-frequency signals of a radar radiofrequency receiver can be converted into digital signals by the module, and the digital signals can be outputted to the FPGA by the module. The method has the advantages of large dynamic range, high sensitivity, compact circuits, simplicity in debugging and the like. Besides, owing to the method for implementing the transmitting and receiving system, the ship-navigation radar transmitting and receiving system is compact in design and easy to implement, and the radar cost performance can be improved.

The invention discloses an annular temperature sensor which is used for measuring temperature of a transistor. The temperature sensor comprises: an annular P-type heavily doped region, an annular N-type heavily doped region, an annular anode, an annular N well region and an annular P well region which are sequentially arranged in the active region of the transistor in an inside-out order; and an annular cathode arranged in the annular N-type heavily doped region; wherein the annular cathode is shorted to source of the transistor.

The invention discloses a dowty retarder real time monitoring system and a method based electromagnetic induction. The device comprises an electromagnetic induction module. The electromagnetic induction module is used for detecting an electromotive force generated by the sliding oil cylinder of the dowty retarder when a train passes; the voltage data output by the electromagnetic induction moduleis sequentially transmitted to a voltage amplification filter module and an analog-to-digital conversion module for processing. The analog-to-digital conversion module converts the data into a digitalsignal and then transmits the data to a monitoring platform through a wireless transmission module. A monitoring platform judges the working state of the dowty retarder according to the electromotiveforce generated by the electromagnetic induction module. The real-time and on-line monitoring of the dowty retarder in the hump speed regulation system of the railway marshalling station can be realized. The dowty retarder with problem can be found in time. The occurrence of accidents can be reduced and the efficiency is improved.

The invention discloses a method for measuring Bohr resonance phase difference and modifying data through continuous photographing or camera shooting, relates to the field of physical experiment parameter measurement, and discloses an experiment method which takes the place of a method for measuring phase difference by stroboflash. According to the technical scheme, a scale ruler is suspended between a balance wheel and a rocker, wherein the scale ruler takes the shape of an arc with angle scales; a balance wheel pointer is fixed on the balance wheel; when Bohr resonance forced vibration is in a stable state, the relationship between the balance wheel and the rocker in Bohr resonance forced vibration is recorded through continuous photographing or camera shooting; the time difference delta T generated when the balance wheel pointer and a rocker pointer point to one same scale on the scale ruler, and the swinging period T are confirmed through a computer according to the photographing time of a picture or the time interval of frames of camera shooting, and the phase difference is 360o*delta T/T; linear interpolation is adopted for modifying data when the balance wheel pointer and the rocker pointer cannot point to one same scale. The method has the beneficial effects that the influence of large current on the working state of an electronic circuit is avoided, and the method is an improvement of the prior art.

An optical slide mouse with rolling ball is composed of a shell with a planar bottom having the first opening, a ball in said shell, and a light source in the shell for generating light beam to irradiate said ball, and a control circuit in the shell and having an optical recognizing unit for recognizing the change in reflected light of ball.

The invention discloses an electronic execution unit working state self-holding protection circuit and system. The self-holding protection circuit comprises an electronic execution unit working statesignal end, at least two logic signal input ends of the self-holding protection circuit, a logic operation circuit used for carrying out logic operation output on at least two logic input signals anda trigger circuit. By means of the logic operation circuit and the trigger circuit, the working state of the electronic execution unit working state signal end is not influenced when a microcontrolleris subjected to multiple transient anomalies. Even if an output signal of the microcontroller is abnormal, the working state of an execution unit is not influenced. When the microcontroller returns to normal, the working state of the current execution unit can be identified, and a correct control instruction is continuously given.

The invention discloses a temperature-controlled type range hood, and belongs to the technical field of household appliances. The temperature-controlled type range hood comprises a front panel 1, a smoke guiding plate 2, a filter screen 3, an oil guiding plate 4, a first fan 5, a second fan 6, a smoke exhaust port 7, an oil groove 8 and a control box 13; and the front panel 1 is arranged at the front end of the temperature-controlled type range hood, the smoke guiding plate 2 is embedded on the front panel 1, the inner side of the smoke guiding plate 2 is provided with a filter screen 9 and alighting device 10, the inner side of the front panel 1 is provided with the filter screen 3 and the oil guiding plate 4, the upper side of the filter screen 3 is provided with the first fan 5, the rear side of the first fan 5 is provided with the second fan 6, the lower end of the second fan 6 is provided with the control box 13, and the oil groove 8 is formed in the lower portion of the controlbox 13. The temperature-controlled type range hood is characterized in that the inner side of the smoke guiding plate 2 is provided with the filter screen 9 and the lighting device 10, the oil groove8 is internally provided with a temperature-sensitive device 11, the upper end of the temperature-sensitive device 11 is provided with a control switch 17, the smoke exhaust port 7 is provided with asmoke exhaust fan 12, and shock-absorbing and sound-absorbing materials 16 are arranged around the first fan 5 and the second fan 6. The temperature-controlled type range hood has the excellent oil smoke absorbing effect.

The invention provides a method for measuring a Pohl resonance phase difference by using a digital oscilloscope and relates to the field of physical experiment parameter measurement. The method for replacing a stroboscopic method for measuring the phase difference is proposed. According to the technical scheme, a swing wheel and a rocker are respectively and fixedly provided with a touch jaw which is in a 7 shape; soft conductor wires are suspended above the swing wheel and the rocker respectively; the swing wheel swings to the position where the touch jaw touches the corresponding soft conductor wire, a circuit is made to be connected to a power source, a pulse voltage is output at an open circuit end, and open circuit voltages generated due to connection at the upper end of the swing wheel and the upper end of the rocker are connected to the an X input port and a Y input port of the double-tracking digital oscilloscope respectively; an input signal is obtained through a time measurement tool of the digital oscilloscope, a vibration cycle T is measured on an oscilloscope display screen, the time interval delta T between the high levels of two signals is measured, and when the delta T is smaller than T/2, the phase difference is 360 degrees*delta T/T. The method for measuring the Pohl resonance phase difference by using the digital oscilloscope has the advantages that the influences on the working state of an electronic circuit of a large current instrument are avoided, and the prior art is expanded.

The invention relates to the field of cast-welding machines and particularly relates to a slag removing and driving assembly for a cast-welding machine. The slag removing and driving assembly is composed of a slag removing part and a driving plate assembly mounted on the slag removing part; the driving plate assembly is composed of a driving plate and two groups of driving plate supporting columns mounted at the end parts of the driving plate; and the other ends of the driving plate supporting columns are also provided with heat insulation plates arranged at the upper side of the driving plate. Due to the arrangement of the heat insulation plates and the driving plate supporting columns, heat in a framework can be prevented from being conducted towards an air cylinder and the outside, and the working state of the air cylinder cannot be affected; in addition, the condition that the service life of a sealing ring of the air cylinder is shortened by the heating of the air cylinder can be effectively avoided because the lengths of a slag removing guide post and a slag removing air cylinder connecting rod are increased.

The invention relates to the technical field of monitoring systems, and provides an angle-adjustable heat dissipation dustproof monitor which comprises a monitoring camera body, a power mechanism, a supporting mechanism and a dustproof mechanism. A substrate in the power mechanism is fixedly connected with a supporting seat at the top, a driving motor is arranged in the supporting seat and an output shaft is connected with a rotating rod, and the top end of the rotating rod is fixedly connected to the bottom of the camera body; one end of the supporting mechanism is rotatably connected with the substrate, and the other end is fixedly connected with the bottom of the camera body; a dustproof cover in the dustproof mechanism is slidably connected with the camera body, sliding grooves are formed in the two sides of the dustproof cover, connecting blocks are slidably connected into the sliding grooves, and the connecting blocks are fixedly connected with a dustproof filter screen; a through hole formed in the top of the dustproof cover is fixedly connected with a connecting sleeve, a pressing rod is slidably connected in the connecting sleeve, the bottom end of the pressing rod is fixedly connected with a dustproof filter screen, the top end is fixedly connected with a pressing plate, and the pressing rod is sleeved with a compression spring. Dustproof can be achieved in the monitoring heat dissipation process, a dustproof mechanism can be simply, rapidly and stably installed, the supporting stability of the monitoring body is improved, and the monitoring angle can be adjusted.

The invention belongs to the technical field of building equipment and particularly relates to an indoor dust suppression device for a construction site. In view of the problem that the existing devices are not comprehensive enough during indoor dust suppression, a scheme as follows is proposed at present: the indoor dust suppression device comprises a shell, wherein a partition plate is fixedly connected to a bottom end, between internal walls of two sides, of the shell, the shell is divided into a water storage chamber located at the top end of the partition plate and a dust suction chamberlocated at the bottom end of the partition plate by the partition plate, the bottom end of the partition plate is fixedly connected with a negative-pressure blower, a framework is fixedly connected tothe shell between internal walls of two sides of the dust suction chamber and is located below the negative-pressure blower, and an opening is formed in the middle part of the framework. According tothe indoor dust suppression device for the construction site, through arranging the negative-pressure blower and an isolating pad, negative pressure can be generated through the negative-pressure blower, so that dust on the ground can be sucked into the dust suction chamber from a dust suction port; and meanwhile, the isolating pad is required to be bedewed with water before using the device, sothat the dust will be blocked by the isolating pad when the dust enters the dust suction chamber, and an operating state of the negative-pressure blower cannot be affected by the dust.

The invention belongs to the technical field of drilling risers, and discloses a deepwater drilling riser. The deepwater drilling riser comprises a first pipe body and a second pipe body, the first pipe body is provided with a connecting device, the connecting device comprises a first joint and a second joint, the first pipe body and the second pipe body are both provided with stress blocks, a groove ring block is mounted at the bottom of the first pipe body, the second pipe body is connected with the groove ring block in a clamping mode, the first joint is provided with a bolt, and the first joint is fixedly connected with the second joint through the bolt. According to the deepwater drilling riser, a drilling riser connecting structure is arranged, the structure is simple, the sealing performance is high, environments inside and outside the pipe body can be effectively isolated, thus the work state in the pipe body cannot be influenced, the fastness of the structure is high, stability and reliability are achieved, connection of the risers cannot loose, the using safety of the riser is improved, mounting of the connecting structure is simple, and large amount of labor can be saved.

The invention relates to the field of motors, and discloses a motor capable of automatically adding and replacing a lubricant. A main box body is included, the left end surface of the main box body is fixedly connected with an external connection block, and the tail end of the left side of the lower end surface of the external connection block is fixedly connected with a jet extension block. The lower end surface of the jet extension block is fixedly connected with a jet block extending downwards, a switch plate cavity is formed in the main box body, the number of rotating turns of a driving shaft is sensed through a magnetic induction block, after the driving shaft rotates by a certain number of turns, lubricant adding and replacing are automatically finished on an output source output gear and a motor bearing in the motor, the lubricity of the motor under high-load work can be guaranteed, friction force is reduced, the transmission ratio is improved, the service life of the motor is prolonged, noise of the motor in the working process is reduced, meanwhile, the lubricating timeliness is improved, the working state of the motor cannot be affected in the lubricating process, and the working efficiency of the motor is improved.

The invention discloses a patrol robot control terminal and a control method thereof. The control terminal comprises a terminal panel, a right control handle, a left control handle and a control system. The right control handle and the left control handle are respectively connected to the right side and the left side of the terminal panel; the terminal panel, the right control handle and the left control handle are all in communication connection with the control system, and the control system is further in wireless communication connection with the background system and the robot. By means of the system, remote control over the robot can be achieved, work tasks of the multiple robots can be distributed or switched in real time, cluster deployment and control of the multiple robots are achieved, the patrol robot and actual combat application are more closely combined, and application and popularization of the patrol robot are accelerated.

The invention relates to an automatic elimination circuit for input offset voltage of an operational amplifier, which comprises a first control module, a second control module, a first current sourcemodule, a second current source module and an operational amplifier module, wherein the first control module generates a first control signal according to an output signal of the operational amplifiermodule; the second control module generates a second control signal according to the output signal of the operational amplifier module; the first current source module and the second current source module generate current signals according to the second control signal; the operational amplifier module achieves elimination of input offset voltage according to the current signal and achieves switching between an offset elimination mode and a working mode according to the first control signal. The automatic elimination circuit provided by the invention does not influence the working state of theoperational amplifier while eliminating the offset voltage.

A gallium nitride power device with a high-voltage-resistance grid and low electric leakage comprises a P-type silicon substrate, an aluminum nitride buffer layer arranged on the P-type silicon substrate, an aluminum-gallium-nitrogen buffer layer arranged on the aluminum nitride buffer layer, a gallium nitride buffer layer arranged on the aluminum-gallium-nitrogen buffer layer, an aluminum-gallium-nitrogen barrier layer arranged on the gallium nitride buffer layer, a source electrode and a drain electrode, metal is arranged above the source electrode and the drain electrode to be used as the source electrode and the drain electrode to be connected with input and output from the two ends of the aluminum-gallium-nitrogen barrier layer to the periphery, ohmic contact is formed between the source electrode metal and the left end of the aluminum-gallium-nitrogen barrier layer, ohmic contact is formed between the drain electrode and the right end of the aluminum-gallium-nitrogen barrier layer, three P-type gallium nitride layers with different doping concentrations are stacked above the aluminum-gallium-nitrogen barrier layer, gate metal is arranged above the P-type gallium nitride layer to connect the P-type gallium nitride layer to input and output at the periphery of the structure, the gate metal and the P-type gallium nitride layer form Schottky contact, the P-type gallium nitride layer and the gate are relatively close to the source electrode and relatively far away from the drain electrode between the source electrode and the drain electrode, a nitride passivation layer is arranged between the drain electrode and the P-type gallium nitride above the aluminum gallium nitride barrier layer, and a nitride passivation layer is arranged between the source electrode and the P-type gallium nitride.