39results about How to "Overcoming delay effect" patented technology

The invention belongs to the technical field of frequency control and relative technical field of demand side response in an intelligent power grid, aims at reducing capacity requirements on a spare generator unit and an energy storage device from system frequency control requirements, saves corresponding investment, and simultaneously avoids the problem about system 'secondary disturbance' prone to occurring during a conventional frequency controlling process. The technical scheme includes that a controlling method for variable participation frequency of temperature control load includes the steps of: (1) collecting current power grid frequency fmeas (advising a refrigerating chamber temperature Tc (n) for refrigerating equipment); (2) designing pf into a piecewise linear function in positive proportion to power grid frequency deviation; (3) calculating according to data of the step (1) and the step (2); (4) determining the next operation of a compressor of the refrigerating equipment according to the calculating result of the step (3); and (5), n=n+1, returning to the step (1) and starting the next cycle. The controlling method and a controller for the variable participation frequency of the temperature control load are mainly applied to manufacture of the refrigerating equipment.

The invention relates to the technical field of video processing, and provides a video acquisition method and device, a computer readable storage medium and electronic equipment. The video acquisitionmethod comprises the steps that a shooting request sent by a client is responded, wherein the shooting request comprises shooting starting time, video starting time is determined according to the shooting starting time, a real-time event video is acquired, a target video from the real-time event video is determined according to the video starting time, and the target video is sent to the client.The target video is intelligently recognized in the real-time event video, so that the delay effect of field shooting is avoided, and the use experience of a user is improved.

The invention discloses a nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source which is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a voltage comparator U1, a switch filter circuit connected between the positive electrode output end of the diode rectifier U and the in-phase end of the power amplifier P1 in series, a power source output circuit connected with a secondary side coil L2 of the transformer T, a voltage transformation feedback circuit connected with a secondary side coil L3 of the transformer T and the like. The nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source is characterized in that a logic protection emitter coupling type amplification circuit is further connected between the Q end of the voltage comparator U1 and the inversion-phase end of the power amplifier P1 in series. According to the nonlinear negative feedback logic protection emitter coupling type switch voltage stabilizing power source, a current detection amplifier circuit is used for achieving current detection, the current borne by a switch power source can be effectively increased, and the application range of the switch power source becomes wider.

The invention discloses a mixed triggering type power source based on a logic protection amplifying circuit. The mixed triggering type power source based on the logic protection amplifying circuit is mainly composed of a transformer diode triggering circuit, a power logic control circuit, a crystal oscillating circuit and a buffering crystal oscillating circuit, wherein the power logic control circuit is connected with the transformer diode triggering circuit, and the crystal oscillating circuit and the buffering crystal oscillating circuit are connected with the transformer diode triggering circuit. The mixed trigger type power source based on the logic protection amplifying circuit is characterized in that a logic protection amplifying circuit is further connected between the transformer diode triggering circuit and the power logic control circuit in series. By the adoption of the mixed triggering type power source based on the logic protection amplifying circuit, a circuit structure is greatly simplified, the radio-frequency interference of the circuit and radio-frequency interface of external connection are reduced, and manufacturing cost and the maintenance cost are greatly reduced; meanwhile, the delay effect of a traditional power circuit can be effectively overcome, and the quality of the power source can be effectively improved.

The invention provides a system, a method and a device for adjusting the flow of a parallel branch of a double-phase cold plate liquid cooling system. The system comprises a circulating pump, a preheater, a condenser, a double-phase cold plate liquid cooling parallel branch, a control module and a data acquisition module; the circulating pump is connected with the preheater and the condenser; the double-phase cold plate liquid cooling parallel branch comprises a plurality of cooling branches which are connected with the preheater and the condenser; an electric valve and a plurality of evaporators are arranged on each cooling branch, and temperature sensors are arranged at the evaporators; the electric valves are connected in series with the evaporators to form the cooling branches, and an enthalpy value transmitter and a pressure sensor are connected in series at the outlet of each evaporator in each cooling branch; the data acquisition module is connected with the temperature sensors, the enthalpy value transmitters and the pressure sensors; the control module is connected with the circulating pump, the data acquisition module and the electric valves. The flow of each liquid cooling branch is accurately controlled, the flow can be controlled by adjusting the rotating speed of the circulating pump in advance according to the load power consumption, and the delay effect is avoided.

The invention discloses a logic protection amplification type blue-light LED lamp protecting system. The logic protection amplification type blue-light LED lamp protecting system mainly comprises a grid drive circuit, a logic control circuit, a power amplifier P1, a power amplifier P2, a pulse comparator U1, a pulse comparator U2, a field-effect transistor MOS1, a field-effect transistor MOS2, a field-effect transistor MOS3, a field-effect transistor MOS4 and an oscillator. The power amplifiers P1 and P2 and the pulse comparators U1 and U2 are connected with the logic control circuit; grids of the field-effect transistors MOS1, MOS2, MOS3 and MOS4 are connected with the grid drive circuit; the oscillator is connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system is characterized in that a logic protection amplification circuit is also connected in series between the cathode input end of the pulse comparator U1 and the cathode input end of the pulse comparator U2. The logic protection amplification type blue-light LED lamp protecting system has functions of short-circuit protection, overvoltage protection and open circuit protection and has low power consumption which is one third of power consumption of a conventional protection circuit.

The invention discloses a light beam exciting type logic protective nolinear negative feedback stabilized switching power supply which is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a power output circuit and the like, wherein the switch filter circuit is connected between the diode rectifier U and the power amplifier P1 in series, and the power output circuit is connected with a secondary side coil L2 of the transformer T. The light beam exciting type logic protective nolinear negative feedback stabilized switching power supply is characterized in that a light beam exciting type logic amplifying circuit is further connected between the negative electrode output end of the diode rectifier U and a PWM controller in series, and a logic protection emitter coupled type amplifying circuit is further connected between the reversal phase end of the power amplifier P1 and the switch filter circuit in series. The nonlinear characteristics of a nolinear negative feedback circuit are utilized to enable a regulating tube to be located on the edge of a saturation region automatically, radio-frequency interference of the circuit and external radio-frequency interference are lowered effectively, the circuit structure is simplified greatly, and the manufacturing cost and the maintenance cost are reduced greatly.

The invention provides a front-end picture loading method and system, and the method comprises the following steps: S1, enabling each image file to be decomposed into a two-dimensional array at a webserver, executing the data cutting, and enabling the two-dimensional array to be divided into a plurality of array sets; s2, recording the image features of each array set into dom nodes of a corresponding image file; s3, when a user logs in the system through the web client, judging whether image data exists in the dom node of the current page or not; if so, obtaining a dom node of the to-be-loaded image file; and S4, taking out the array set and the image features from the dom node, executing data reconstruction, reconstructing the data set into a two-dimensional array, and restoring the two-dimensional array into an image file to realize image loading. When the picture is loaded, only a small amount of data needs to be loaded, so that the page delay effect caused by loading a large amount of pictures is effectively avoided, a user can enjoy extremely high loading speed, and the user experience is well improved.