35results about How to "Realize timing control" patented technology

The invention provides a convenient-to-maintain LED street lamp which comprises a lamp column, an upper cover, LED lamp parts, an LED spiral sliding sleeve, rubber plates, a control device, a base and a transmission device; the base is arranged at the lower end of the lamp column; the upper cover is arranged at the upper end of the lamp column; the transmission device is arranged on the inner sides of the base and the lamp column; sliding grooves are formed in the two sides of the lamp column; each rubber plate is arranged on the left and right sides of the outer plane of one corresponding sliding groove; the LED spiral sliding sleeve is connected with the transmission device; the LED lamp parts are arranged on the left side and the right side of the LED spiral sliding sleeve, and are matched with the sliding grooves; and the control device is provided with a lamp column lower end front plane and is connected with the transmission device. According to the convenient-to-maintain LED street lamp, through the matching of a threaded rod and the LED spiral sliding sleeve, free vertical movement of the LED lamp parts is realized, and the LED lamp parts are convenient to maintain; a signal transmitting-receiving module is arranged on the inner sides of the LED lamp parts, so that diversified management on the LED lamp parts is realized, and the single street lamp can be controlled flexibly; and the convenient-to-maintain LED street lamp is simple in structure and convenient to use.

The invention relates to a copying packaging device and a packaging method thereof. The copying packaging device comprises a horizontal work table, wherein a cavity used for containing an express parcel is formed inwards in the middle of the upper surface of the horizontal work table; a plurality of resistance wires are separately arranged on the front side wall, the left side wall and the right side wall of the upper end of the cavity, and the resistance wires are separately electrically connected with a control unit through first time relays; a cutting mechanism used for cutting the package of the express parcel is hinged to the horizontal work table, and the cutting mechanism covers the cavity; the cutting mechanism comprises an outer frame having a size consistent with that of the horizontal work table, a screw rod transversely erected on the outer frame and a cutting rod longitudinally arranged on the outer frame; the cutting rod is fixedly connected with a sliding nut of the screw rod and extends to the rear side of the horizontal work table; and a lifting mechanism with an electromagnet is fixed to the rear end of the cutting rod in the vertical direction, and the electromagnet is electrically connected with the control unit through a second time relay. The copying packaging device and the packaging method thereof have the advantages that copying packaging is realized through intelligently controlling the heating time of the resistance wires, the work efficiency is improved, and the utilizing rate of packaging bags is high.

The invention discloses a light-control curtain automatic control system. The light-control curtain automatic control system comprises a photosensitive sensor which is used for collecting light intensity of the external environment, a signal correction signal which is used for receiving, and amplifying and filtering the light signal collected by the photosensitive sensor, an A / D converter which is used for converting an analog signal transmitted from the signal correction circuit into a digital circuit, a single chip microcomputer which is used for performing control according to the received digital signal to realize forward rotation, backward rotation and stop of a stepping motor, the stepping motor which is an executing device for controlling on-off of the curtain and performs forward rotation or backward rotation according to the instruction of the single chip microcomputer and a key instruction, a display module which is used for displaying various kinds of states of the curtain control system, and a keyboard module which controls the single chip microcomputer to input instruction through different keys so as to manually control the curtain.

The invention discloses a heating device of an electric hot-water bag. The heating device of the electric hot-water bag comprises a water injection plug, an electric heating tube, an over-temperature fuse and a temperature control switch. The water injection plug is internally provided with the electric heating tube. The electric heating tube comprises a metal tube and a resistance wire. The metal tube is internally provided with the resistance wire and a leading-out rod at the front end of the resistance wire. A magnesium oxide powder compacted layer is arranged outside the resistance wire and the leading-out rod. One end of the leading-out rod is connected with a copper needle which is used for connecting with a power line, and the other end is connected with the over-temperature fuse and the resistance wire. The end of the resistance wire is connected with the temperature control switch. The water injection plug is provided with a plug hole and a connecting screw thread. The water injection plug is furthermore connected with a timer. The over-temperature fuse is arranged in the magnesium oxide powder compacted layer, thereby realizing high stability. The magnesium oxide powder compacted layer has advantages of isolating air, reducing feedback time and realizing high heat conductivity and true and effective temperature information. Furthermore the heating device of the electric hot-water bag has advantages higher intelligence, better energy-saving performance, better environment-friendly performance and higher applicability.

The invention provides an electricity taking switch with a single live wire. The electricity taking switch with the single live wire together with a load is connected to220V commercial power in series, and comprises a voltage conversion module, a standby electricity taking circuit, an electricity taking ON circuit, an ON / OFF control circuit and an intelligent control panel; the standby electricitytaking circuit comprises a voltage reduction module and a voltage stabilization module; the voltage reduction module reduces a high voltage output by the voltage conversion module; the voltage stabilization module regulates and stabilizes voltage output by the voltage reduction module; and the output end of the voltage conversion module is connected with the input end of the voltage reduction module, and the output end of the voltage reduction module is connected with the input end of the voltage stabilization module. The electricity taking switch can take electricity either when the load isdisconnected or connected, can obtain electric energy of high power, and thus, drives the intelligent control panel with a WIFI scheme, and realizes intelligent control of household electric appliances.

The invention discloses a variable valve timing device, which is used to control the opening and closing timing of the valves of the vehicle engine, comprising: a camshaft, used to drive the opening and closing of the valves; a rotary driving part for driving the camshaft, which Able to rotate synchronously with the crankshaft of the engine and relative to the camshaft; a phase adjustment mechanism for changing the relative rotational phase between the rotary drive member and the camshaft to allow adjustment of at least the opening timing of the valves; wherein the phase adjustment mechanism includes The motor is only in transmission connection with the camshaft, and when the valve needs to be opened in advance, the motor drives the camshaft to rotate forward relative to the rotating drive component, thereby opening the valve in advance. Utilizing the variable valve timing device of the present invention can realize the continuous opening of the valve, and under high-speed and high-load working conditions, the intake air volume is larger than that of the prior art; the overall weight of the valve train can be reduced, and the The cylinder head system can be realized with minor changes and has strong versatility.

The invention relates to an intelligently controlled ventilation system capable of improving indoor air quality. Under control of a computer main control machine, the system comprises at least one frequency conversion driving full-heat exchange bidirectional ventilation fan, an air quantity control switch which corresponds to each ventilation sub-area and controls the opening, closing and air quantity of each ventilation sub-area, and a digital control adjustment air door, wherein at least two independent ventilation sub-areas are built; and the frequency conversion driving full-heat exchange bidirectional ventilation fan conducts outdoor fresh air into each ventilation sub-area indoors and exhausts the turbid air in each ventilation sub-area indoors. In the system, a way of manual control and / or intelligent control can be adopted. The system intelligently controls different ventilation sub-areas, ventilates different ventilation sub-areas according to actual needs, realizes fixed point, quantificational and fixed timing control, and fully saves energy; and rich negative oxygen ions are added into the fresh air conducted indoors.

The embodiment of the present invention provides a short message retry processing method and its device and system. By performing slicing processing on each timing data according to the order of expiration time, timing data fragments are generated, and each fragment is stored. Each stored A shard corresponds to a key-value data pair. Determine the corresponding shard according to the current scan time, find the corresponding timing data in the shard, and if there is timing data in the current scan time, remove the timing data from the shard Delete and retry the timing data, and update the current scanning time according to the preset rules until the retry of timing data in all fragments is executed; the timing data is used to control the short message, avoiding the occurrence of data loss, and also ensure the normal execution of short message retry processing, and improve the processing efficiency of the system for short message retry processing through fragmented scanning.

The invention discloses a road lighting LED driver based on network control. It includes EMI input filter circuit, PFC power factor correction circuit, LLC frequency conversion conversion circuit, control module and RF module, the input end of EMI input filter circuit is connected with mains electricity, the output end of EMI input filter circuit is connected with PFC power factor correction circuit The input end of the PFC power factor correction circuit is electrically connected to the input end of the LLC frequency conversion conversion circuit, the output end of the LLC frequency conversion conversion circuit is electrically connected to the LED lamp, and the control module is respectively connected to the RF module and the EMI input filter The control terminal of the circuit is electrically connected with the control terminal of the LLC frequency conversion conversion circuit, and a radiator is also arranged on the driver. The invention can realize functions such as timing control, dimming control, data wireless transmission and the like of road lighting LEDs, and improves power factor and efficiency.

The invention discloses a variable valve timing method used for controlling opening and closing timing of a valve of a vehicular engine. When the valve needs to be opened in advance, a phase adjusting mechanism drives a camshaft to rotate forwards relative to a rotary driving part; when the camshaft rotates to a position enabling the valve to be maximum in lift basically, the phase adjusting mechanism keeps the camshaft at the current position, so that the valve is kept at the maximum lift basically; and after the camshaft is kept at the current position for a period of preset time, the rotary driving part drives the camshaft to rotate continuously. The valve can be opened continuously by the variable valve timing method, and the variable valve timing method is larger in air inflow as compared with that in the prior art under the high-rotational-speed high-load working condition.