34results about How to "Simple switch control" patented technology

The present invention relates to a method for scheduling and controlling access to a multibank memory having at least two banks, and to an apparatus for reading from and / or writing to recording media using such method. According to the invention, the method comprises the steps of: writing an input stream to the first bank; switching the writing of the input stream to the second bank when a read command for the first bank is received; and switching the writing of the input stream back to the first bank when a read command for the second bank is received.

In a refrigerating plant with three compressors (2A, 2B, 2C) and two-system use-side heat exchangers (41, 45, 51), the first compressor (2A) is connected to be used only on the first system side The state of the utilization-side heat exchanger (45, 51) of the circuit, the third compressor (2C) is connected to the state of the utilization-side heat exchanger (41) only for the second system side circuit, and the second compressor ( 2B) By connecting the utilization side heat exchangers (45, 51) of the first system side circuit and the indoor heat exchanger (41) of the second system side circuit, the structure of the suction side piping can be simplified and simplifies operation control.

The invention belongs to the technical field of optical communication, and particularly relates to a non-blocking expandable multistage photoswitch array and a working method thereof. The multistage photoswitch array is provided with kN input terminals and kN output terminals, and comprises a packet network with kN input terminals and kN output terminals and a switching network consisting of k N*N non-blocking switching units A. The kN output terminals of the packet network are divided into k output groups. Any one input terminal selected can be connected to the output terminal of any one group of output groups. The N output terminals on each output group are connected with the N input terminals on the switching unit A orderly. The invention has the advantages that a novel network topological structure is put forward, wherein the structure combines the characteristic that mono-stage switching network is simple to control and the advantages of multistage switching network which is low in cost and complexity of hardware. A syncretic topological structure is put forward. The N*N structure is selectively expanded to the kN*kN structure agilely according to the current network traffic. The non-blocking expandable multistage photoswitch array provided by the invention is simple in swapping control and has strict non-blocking characteristics.

The invention relates to an automotive hydraulic vane pump motor and a switching control hydraulic system thereof. The pump motor comprises a rear pump cover, an oil-in distribution disc, a stator, a rotor, an oil-out distribution disc, a front pump cover, a shaft, a vane, an oil inlet and an oil outlet, wherein a static pressure oil chamber is formed in one side wall of a vane slot in the rotor and is communicated with an external hydraulic source through a signal oil passage; the static pressure oil chamber takes the shape of a groove and has openings which directly face the body of the vane when the vane extends to the maximal position and the minimal position; a vane root oil chamber, which is used for supplying hydraulic pressure to actuate the vane to extend out, is arranged at the root of the vane; an external switching control hydraulic system is used for supplying hydraulic oil to the vane root oil chamber; the switching control hydraulic system comprises an accumulator, a three-position electromagnetic directional valve and a reversing valve; one oil port in an output end of the reversing valve is communicated with the static pressure oil chamber, and the other oil port is connected with the vane root oil chamber; the oil port in an input end of the reversing valve is connected with signal oil, and a non-return valve is arranged on the accessed oil passage; oil ports in the output end of the three-position electromagnetic directional valve are respectively connected with the oil inlet and the oil outlet, and oil ports in the input end of the three-position electromagnetic directional valve are respectively connected with an oil tank and the accumulator.

The invention relates to a control system for variable cursors of a measurement and control radar device. The control system comprises a control portion and a structure target holder, according to relative position data of the cursors of the measurement and control radar device, reference of two of reference position data is carried out, a guide rail member is fixed on a guide rail reference member, a cursor guide rail member is locked on the guide rail member, the guide rail reference member and the guide rail member are fixed through utilizing a supporting member, after all the cursors are mounted, the integrated guide rail reference member is led through a safety groove through utilizing a rope onto a structure in the prior art, the guide rail reference member is lastly inserted into a fixing hoop, and mounting of the whole device is accomplished. Branch controllers are distributed around the fixing hoop, cable connection is accomplished, through a host computer, cursor control can be conveniently realized according to a combination control protocol. The system is advantaged in that mounting, adjustment and control are convenient, the cursor position can be accurately positioned, combination control on the cursors can be realized, and quite great application values are realized.

A battery series circuit and parallel circuit rapid switching device comprises a power source, a plurality of battery fixing connection pieces, a switching switch, a plurality of contactors and a plurality of relays, wherein each battery fixing connection piece is provided with a series positive electrode, a series negative electrode, a parallel positive electrode and a parallel negative electrode; each contactor is provided with two normally open contacts which can be opened and closed and a coil; each relay is provided with two normally open contacts which can be opened and closed and a coil; the part between every two battery fixing connection pieces is provided with one contactor, wherein one contact of the contactor is connected with the series positive electrode of one battery fixingconnection piece, and the other contact of the contactor is connected with the series negative electrode of the other battery fixing connection piece; the coils of the contactors are connected with aseries gear and the power source in series to form a closed loop circuit; and each battery fixing connection piece is further provided with one relay, one contact of the relay is connected with the parallel positive electrode of the battery fixing connection piece, and the other contact of the relay is connected with the parallel negative electrode of the battery fixing connection piece; and thecoils of the relays are connected with a parallel gear and the power source in parallel to form a closed loop circuit.

The invention relates to a redundant balanced lithium battery management circuit and method combined with K-means clustering genetic algorithm. The circuit includes a single chip unit, a switch drive unit connected to the single chip unit, an AD sampling unit, a passive equalization drive unit, a Hall sensor, and a battery pack module; the single chip unit collects data according to the AD sampling unit and the Hall sensor, The corresponding switches are controlled by the switch drive unit and the passive balance drive unit, thereby controlling whether each lithium battery unit and each single lithium battery in the battery pack module participate in the power supply of the entire redundant balanced lithium battery management circuit. The invention has applicability, can solve the problem of inconsistent power of discrete battery packs, reduce the energy difference between the battery cells in the battery pack, and improve the consistency of the battery pack.