234 results about "Switching loop" patented technology

A switched loop RF radiator circuit, comprising a radiator element, a circuit RF input/output (I/O) port, and a balun coupled between the radiator element and the I/O port. The balun includes a 180° switched loop circuit having two transmission line legs coupled to a balun transition to provide a selectable 180° phase shift, and a microelectromechanically machined (MEM) switch cirtuit. Many radiator circuits can be deployed in an electronically scanned antenna array.

The invention provides an intelligent terminal device adaptive to an intelligent transformer substation, belonging to the technical field of power automation. The intelligent terminal device adaptive to the intelligent transformer substation comprises a master control board, an open-in plate, an operating loop plate, an open-out plate, an interlocking plate, a simulating input plate, a display panel and a power source panel, wherein the master control board is used for realizing functions of logic judgment, external communication, I/O (input/output) control and the like of the device; the open-in plate is used for collecting and accessing the quantity of state of a switch; the open-out plate is used for driving a loop relay of the switch; the operating loop plate can be used for realizing functions of self-maintaining trip and close of a trip and close loop of a circuit breaker, monitoring the trip and close positions, pressure locking of trip and close and preventing tripping and the like; the interlocking plate can be used for locking the switch loop such as an earthing knife-switch and the like; the simulating input plate has a function of collecting information of a state sensor; the display panel is used for displaying the condition of the device and the state of the switch; and the power supply panel is used for providing a power supply for the device. With the adoption of the technical scheme provided by the invention, a structure of open-out-interlocking-operating loop is adopted for the operating control part of the switch, so that high infusion of the device with a primary device is realized, the reliability of the operating loop of the switch is enhanced, the CAN (controller area network) communication is reserved; and the intelligent terminal device has expandability.

Two logical partitions within a single computer communicate with each other internally. The protocol stack of a first logical partition generates a frame in a memory space provided in a driver and referred to by the first logical partition. The driver transfers the frame generated in the memory space of the first logical partition to a communication port of a Layer 2 switch using DMA. The communication port of the Layer 2 switch loops back the frame input from the driver. An interrupt is signaled to the driver and the frame is transferred from communication port of the Layer 2 switch to the driver using DMA. The frame is received in a memory space referred to by a second logical partition.

The invention discloses a multi-level voltage source current converter comprises at least one phase unit. Each phase unit comprises an upper bridge arm, a lower bridge arm and a current conversion electric reactor, wherein the upper bridge arm and the lower bridge arm respectively comprise at least two sub-modules, a switch loop and a bridge arm electric reactor all of which are sequentially connected in series; all sub-modules in the same bridge arm are connected in series in the same direction; the sub-modules, connected with the switch loop, in the upper bridge arm are opposite to the sub-modules, connected with the switch loop, in the lower bridge arm in polarity; one end, connected with the electric reactor in series, of the upper bridge arm and one end, connected with the electric reactor in series, of the lower bridge arm are connected and have access to an alternating current network through the current conversion electric reactor; the other end of the upper bridge arm and the other end of the lower bridge arm serve as a first direct current endpoint and a second direct current endpoint of the phase unit respectively to have access to a direct current network. Each switch loop comprises a plurality of anti-parallel thyristor pairs which are connected in series. The multi-level voltage source current converter is applied to flexible direct-current transmission and the like, and has the advantages of being small in number of the sub-modules, low in cost, small in consumption, capable of effectively blocking fault currents when the direct current side breaks down, and the like. The invention further discloses a control method of the multi-level voltage source current converter.

The invention relates to the adhesion of platelet GpIbα to strand β3 of domain A1 of von Willebrand factor (vWF), the strand β3 comprising amino acid residues at amino acid position 560-566 and/or a functional part or equivalent thereof, the platelet GpIbα, the GpIbα region comprising an amino acid sequence corresponding to a beta-switch loop of platelet GpIbα, comprising amino acid residues at amino acid position 227-242 and/or a functional part or equivalent thereof. The invention provides a method of interfering with adhesion of blood platelets to vWF that includes modulating adhesion. The invention further provides proteinaceous compounds, antibodies, medicaments and pharmaceutical compositions to that end. The invention also provides means and methods to increase platelet adhesion by topical application of a compound increasing platelet adhesion.

The invention discloses a withstand test device of a sleeve of looped network cabinet equipment, which comprises a test interface, a conducting rod and a stress control unit. One end of the test interface is formed to be an inserting interface which is connected with the conical surface of a standard sleeve of the switch looped network cabinet equipment, and the other end of the test interface is provided with a stress control unit for controlling the distribution of electric field and enhancing the insulation performance. The conducting rod is penetrated through the test interface; one end of the conducting rod is in screw thread connection with the sleeve of the equipment to realize the electric conduction connection and the fixed withstand test; and the other end of the conducting rod is connected with a test power source. By adopting the connection mode, the withstand test device can meet the requirement of various voltage insulation test items and electric current test items of the looped network cabinet equipment. The withstand test device is simple in structure, convenient in installation, practical and reliable.

The invention relates to an MCR (magnetically controlled reactor) soft start and SVC (static VAR compensator) dynamic reactive compensation device as well as a soft start and dynamic reactive compensation method. The device comprises an MCR branch and an FC branch as well as a control system, wherein the MCR branch comprises an MCR, a magnetic control unit and a start switching loop as well as a running switching loop; the MCR is connected with the start switching loop and a motor M in series and is in parallel connection with a network system busbar; a parallel connection bypass of the running switching loop is connected between the grid system busbar and the start switching loop; controlled silicon of the magnetic control unit is connected with an auto winding tap of the MCR; and when the MCR is used as a soft start device of the motor in the process of starting the motor M, and when the motor runs or is idle, the MCR branch and the FC branch are used as dynamic reactive compensation devices. The device and method provided by the invention can be suitable for the soft start of a high-voltage motor and the reactive dynamic adjustment of a network at the same time, and can be used to realize multiple functions and reduce the investment cost of equipment at the same time; and the structure is simple as well as has the advantages of low manufacturing and running cost, simple operational maintenance, good performances, stability and reliability.

A simple mimic-disconnecting switch circuit comprises commutating bridge, direct current replay, LBD, diode and resistance, the four direct current replays set in mimic-disconnecting switch circuit constructs logic action circuit of the mimic-disconnecting switch, it includes a HQ in mimic-disconnecting switch switching loop, a HCJ in simulating switching control loop, a TQ in mimic-disconnecting switch tripping loop, a TCJ in simulating tripping control loop. The circuit of the invention is simple, test property is stable, the cost is low, and the capacity is small, the weight is light, it suits for engineering maintain personnel to take, and it is a assistant tool for debugging locale.

A control unit of a reader superimposes a control signal for antenna switching on a high frequency signal outputted into an antenna unit from a high frequency circuit. The antenna unit includes: separators for separating the superimposed signals into high frequency signals and control signals; a switch circuit for switching loop antennas; and a control circuit for controlling the switch circuit based on the control signal separated by the separator.

The invention provides a mobile phone-based remote door opening system comprising a mobile phone terminal and an automatic door lock control device. The mobile phone terminal is wirelessly connected with the automatic door lock control device. The automatic door lock control device comprises a door lock control motherboard, a single chip microcomputer, a short message transmitting and receiving module and an electric control lock. The single chip microcomputer and the short message transmitting and receiving module are arranged on the door lock control motherboard. The short message transmitting and receiving module is electrically connected with the electric control lock through the single chip microcomputer. The mobile phone terminal is wirelessly connected with the short message transmitting and receiving module. The mobile phone-based remote door opening system further comprises a relay. The single chip microcomputer is electrically connected with the control loop end of the relay, and the switching loop end of the relay is electrically connected with the electric control lock. The invention further provides a corresponding mobile phone-based remote door opening method and a mobile phone-based remote door opening control method. According to the invention, remote door opening is completed with low cost through remote control of the mobile phone terminal on the electric control lock and adoption of very mature GSM network short message.

The invention belongs to the field of electric power industrial automatic control, and in particular relates to a multi-path collecting method of a smart ammeter. The method comprises the following steps: firstly a voltage transformer and a current transformer are individually connected in each loop; then the voltage transformer and the current transformer are respectively connected with signal input ends of an electronic change-over switch I and an electronic change-over switch II, signal output ends of the electronic change-over switch I and the electronic change-over switch II are connected with an electric energy metering module, and meanwhile, a control pin of an MCU (micro controller unit) is connected with the electronic change-over switches; then the MCU sends change-over command to the electronic change-over switches, the electronic change-over switches perform switching in sequence regularly, switch from the first loop to the Nth loop sequentially, and the voltage transformers and the current transformers on the switched loops transmit the measured three-phase voltage and current signals into the electric energy metering module through the electronic change-over switch I and the electronic change-over switch II; and finally, the electric energy metering module calculates and processes the data. The multi-path collecting method of the smart ammeter provided by the invention has the advantages that multi-path electricity parameters can be collected, and the system structure is simple; and the multi-path collecting method of the smart ammeter is wide in application scope, and can be used for various occasions with different power inputs.

The invention discloses a bidirectional automatic switching looped device which aims to solve the problems that for an existing bidirectional automatic switching looped device, a load switch or an earthing switch is arranged in the existing bidirectional automatic switching looped device, two separate single-loop switches are adopted to be combined to form either the bidirectional automatic switching load switch or the bidirectional automatic switching earthing switch, and according to the single-loop load switch or the earthing switch, a vacuum bubble arc extinguish chamber is put into a specified insulating box and arranged in a switch cabinet; through the structure, the occupied volume is large, installation is complex, too many production processes and parts are needed, consistency is low, and serious accidents are caused when the two single load switches are closed at the same time. According to the technical scheme, a looped network cabinet body, an operation mechanism, a load switch, an earthing operation mechanism and an earthing switch are included; the operation mechanism, the load switch, the earthing operation mechanism and the earthing switch are arranged in the looped network cabinet body; the operation mechanism is connected with the load switch, and the operation mechanism drives the load switch to be closed and opened; the earthing operation mechanism is connected with the earthing switch, and the earthing operation mechanism drives the earthing switch to be closed and opened.

The invention discloses a composite hydraulic control system of a blast-furnace distributing device. The control system comprise an independent closed-loop control loop, at least one centralized control loop and at least one switching loop, wherein the independent closed-loop control loop is used for controlling each hydraulic cylinder and realizing single-position closed-loop control of each hydraulic cylinder and position dynamic compensating control of the three hydraulic cylinders during the motion of the distributing device; the at least one centralized control loop controls the three hydraulic cylinders when the independent closed-loop control loop can not work normally; and the at least one switching loop can realize the automatic switching between the independent closed-loop control loop and the centralized control loop. The invention can not only improve the off-position precision of the distributing device cylinder, but also ensure that the cylinders are synchronous during the angle-variable change process of the distributing device, thereby improving the distribution precision of a blast furnace and simultaneously ensuring that the reliability and the security of the whole control system are greatly improved by adopting composite control.

The embodiment of the invention discloses a method for monitoring the operation mode of a direct-current system and the operation states of disconnecting switches. The disconnecting switch 5ZK, the first battery charger direct-current bus side disconnecting switch 1ZK, the second battery charger direct-current bus side disconnecting switch 2ZK, the first storage battery disconnecting switch 3ZK and the second storage battery disconnecting switch 4ZK are connected through a bus in the direct-current system, it is confirmed that turn-on and turn-off operation is accurate and is in place according to the voltage difference, current and position signals of the disconnecting switches in combination with a switch position auxiliary contact judgment method or a disconnecting switch loop current judgment method or a disconnecting switch two-side voltage difference judgment method or a combined analysis and judgment method, deblocking and blocking logic meets related operation processes, and potential fault hazards can be found. The technical problems that the states of disconnecting switches in an existing direct-current system cannot be effectively monitored, the operation mode of the direct-current system cannot be effectively recognized, an alarm cannot be given to an abnormal operation state, serious potential safety hazards are caused, and safety reliability is low are solved.

The invention relates to belt slipping detection for belt conveyors and discloses a belt slipping detecting method for a belt conveyor. The method includes the steps of firstly, detecting switches and a retaining block are fixed on the rotary drum and the support of the belt conveyor; secondly, a time period t is set by using each rotation circle of the transmission rotary drum as a cycle; the output signals of two groups of detecting switches are monitored in real time, and if the output signals transmitted by the detecting switches cannot be detected in the time period t, a user can judge that belt slipping occurs. A belt slipping detecting device comprises the detecting switches, intermediate relays, time relays and an alarm. The detecting switches are powered by a switch power supply. One intermediate relay is connected into each group of detecting switch loop. One time relay is connected into each intermediate control loop. The control switches of the time relays are parallelly connected and connected into a delay relay control loop. The control output signals of a delay replay is connected with the alarm or the power-off control loop of the belt conveyor.

The invention discloses a laser welding production line. The laser welding production line comprises a loading area, a carrying area, a welding area and an unloading area, wherein a transfer table and a loading manipulator are arranged in the carrying area; the loading manipulator comprises a sucker gripper and a rotating platform; the loading manipulator is connected with a control box; after the control box controls the loading manipulator to stop, the sucker gripper of the loading manipulator is automatically returned above the transfer table; a safe interlocking device linked with the loading manipulator is arranged on an access door, and comprises a switch socket arranged on a frame of the access door, a locking ring arranged on the access door and corresponding to the switch socket, and a switch plug fitting the switch socket; the switch plug penetrates through the locking ring to insert in the switch socket to form a disconnected switch loop; after the switch plug is deviated from the switch socket, the switch loop is conducted; a controller is arranged on the switch loop; and the controller controls the loading manipulator to put down a steel plate on the sucker gripper to the transfer table. The laser welding production line is automatic in production and safer in production process.

The invention discloses a power distribution network triphase load automatic adjusting device and a control method thereof. The device comprises a triphase unbalance adjusting controller, a switch loop, a interline compensation unit and an inter-phase compensation unit, the interline compensation unit and the inter-phase compensation unit are controlled by the triphase unbalance adjusting controller, the interline compensation unit can set number and capacity of branches therein according to capacity of a power distribution transformer, and the inter-phase compensation unit can set number and capacity of branches therein according to inactive capacity of the power distributor transformer. The triphase unbalance adjusting controller can automatically calculate active power and inactive power of a triphase line of the power distribution network online and select proper interline compensation capacity and inter-phase compensation capacity to control automatic switching of a combination switch to compensate each phase of the power distribution network so as to guarantee load balance among phase lines of the power distribution network. The device has the advantages of simple structure, convenience in mounting and high in universality, is low in temperature rise, loss and noise during working.

The invention relates to a low-voltage double-power supply loop device and a control method thereof. The low-voltage double-power supply loop device comprises a first power supply device, a second power supply device and a double-power supply control loop, wherein the first power supply device and the second power supply device are respectively input to the double-power supply control loop; the double-power supply control loop is provided with a first control chip and a second control chip; the first control chip and the second control chip are respectively connected with a power supply detection loop, a power supply comparison loop and a power supply switching loop; the first control chip and the second control chip detect the priorities of the first power supply device and the second power supply device through the power supply detection loop; and when a first prior power supply device has power failure, the voltage is compared through the power supply comparison loop, the first prior power supply device is switched to the second prior stand-by power supply device by the power supply switching circuit, a stand-by power supply continuously supplies the power to an external electronic device, the loss of important data in the external electronic device is prevented, and the loss with lots of money is avoided.

The invention provides a control system for emergency ventilation for an air conditioning and a method thereof, adopting a circuit design of a filter circuit and an inverter structure which are used by a direct current loop and an alternating current loop in common, and driving the emergency ventilator to operate by a three-phase alternating-current supply with a higher frequency and a higher voltage value performing an inversion after the direct current is boosted. Integrated detecting and switching loops of alternating current and direct current are adopted, and the alternating current and the direct current use the same group of the filter circuit and the inverter in common to achieve the simplification of a circuit structure and improve the integration capability of the control system. Alternating current and direct current option circuits of the control system comprises contacts (KM1), (KM2) and a thermistance, wherein a main contact of the contactor (KM1) is connected in a loop of a direct current input circuit, and the main contact of the contactor (KM2) is connected in a loop of an alternating current input circuit (2); the thermistance is connected with a normally closed auxiliary contact of the contactor (KM1) in series, and is connected on a group of contacts of the contactor (KM2).

The invention discloses a method for realizing an optical burst exchange in a ring-network and a node. The core idea of the invention lies in that the data is divided into a data burst timeslot with a fixed length, and corresponding relation between the burst controlling label operated on a controlling wavelength and the data burst timeslot is built; when the node receives the burst controlling label, the node positions the data burst timeslot which is corresponding to the burst controlling label; when the node detects the arriving of the data burst timeslot, the node carries out data operation to the data burst timeslot according to the positioning operation. The invention can realize flexible access controlling and increase the utilization rate of the bandwidth.

The invention relates to a structural improvement on an automatic water outlet device and provides a leak-proof automatic water outlet device which is reliable in operation and simple in structure. The leak-proof automatic water outlet device comprises a water holding basin, wherein a water outlet pipe is arranged above the water holding basin. The leak-proof automatic water outlet device is structurally characterized in that an infrared emitting device and an infrared receiving device which are correspondingly arranged on two sides of the water holding basin, a pressure sensor is arranged at the bottom of the water holding basin and corresponds to the water outlet of the water outlet pipe, a circuit board on which a first relay loop, a time relay loop, a water inflow switch loop, a pressure sensor loop and a pipeline switch loop are arranged is arranged in the water holding basin, the output port of the infrared receiving device is connected with the input port of the first relay loop and the input port of the time relay loop respectively, the output port of the first relay loop is connected with the input port of the water inflow switch loop, the output port of the time relay loop is connected with the input port of the pressure sensor loop, and the output port of the pressure sensor loop is connected with the input port of the pipeline switch loop.

The invention relates to a single-phase AC motor protection circuit, a fan and an air conditioner. The circuit comprises an AC motor or a main/secondary winding thereof, a master switch loop, a discharge loop and a pulse signal generation circuit. The AC motor or the main/secondary winding thereof and the master switch loop are connected in series between the null line and the live line of an alternating current; the discharge loop is connected in parallel with the AC motor or the main/secondary winding thereof; and the master switch loop or the discharge loop comprises a first rectification circuit, a first DC electronic switch and a sampling filter circuit. The problems that, in an AC speed regulation circuit, the DC electronic switch in the discharge loop and the DC electronic switch in the master switch loop are very short in dead time, so that when interference or circuit abnormity occurs in the circuit, the DC electronic switch in the discharge loop and the DC electronic switch in the master switch loop have temporary short circuit, which causes large surge current, and the DC electronic switches enter an unstable status and even are burnout due to severe overheat thereof are solved.

The invention discloses an electronic ballast circuit adaptable to a common light adjustor to adjust light, which comprises a power supply input circuit, a switching loop and a resonance output loop. The electronic ballast circuit is characterized in that: a correcting adjustment loop is arranged between the power supply input circuit and the switching loop; and simultaneously the resonance output loop also comprises a cathodic protection circuit, namely a filament protection loop. The electronic ballast circuit adaptable to the common light adjustor to adjust light, which can be used for adjusting an energy saving lamp and also can be independently used as an electronic ballast of a lighting accessory, has the advantages of low manufacturing cost, wide light adjusting range and stable performance and prolongs the service life of a lamp.