44results about How to "Reduce the number of cores" patented technology

The invention relates to a hybrid power underwater robot, which comprises an underwater robot body and an overwater control box, and is characterized in that an output cable socket is arranged on the top of the underwater robot body and is connected with the overwater control box through a shielding cable; the cable is a six-core wire encapsulated by a silica gel pipe; two pairs of dual-stranded signal wires are respectively connected with a signal differential transformation circuit of a control circuit II of the overwater control box and a signal differential transformation circuit of a control circuit I of the underwater robot body; and a pair of power wires is connected with a direct current power supply of the overwater control box and a direct current power supply of the underwater robot body. A video sensor transmits an appearance and a running state image of an underwater detected object to an overwater working station in real time, so that a professional can analyze the data; and various manipulators can perform light-weight catching work.

A control unit using distributed node network for underwater robot features that the CAN network is used as the core of distributed control. It is composed of the master node consisting of computer host and CAN interface, and the CAN network nodes based no single-chip computer and including system state detecting node, device power supply control mode, power supply managing node, motor control node, emergency treating node, data acquisition node, and serial-pore device node.

An underwater robot for culturing and observing the sea cucumbers is composed of a floating system consisting of power unit, control unit comprising control rods and control circuit and display unit composed of video monitor, character superimposer and video recorder-reproducer, and an underwater robot consisting of left, right and vertical propellers, camera, compass, lamp, cable, protecting frame, floating cabin and supporting frame.

The invention discloses a distributed high-density electrical method instrument. The distributed high-density electrical method instrument comprises a plurality of electrode converter cables which are connected in series, wherein each electrode converter cable is provided with a second electrode junction box and a plurality of first electrode junction boxes; the first electrode junction boxes and the second electrode junction box in the same electrode converter cable are connected in parallel; all the electrode converter cables are connected in series; a main unit is connected with a first joint of one of the cables through a connector to achieve communication with each electrode converter cable. Thus, a communication mode in the same electrode converter cable is a broadcast communication mode, so that fewer cable cores are needed, the size of each cable is reduced, and the cables are convenient to construct and transport; under the condition of more electrodes, encoding can be conveniently carried out in a relay communication mode. Through the combination of the broadcast communication mode and the relay communication mode, the problem of time delay caused by single relay communication can be solved, and the speed of electrode switching is increased.

The invention provides node devices for an LED (light-emitting diode) light control network and an LED light network topology. The node devices and the network topology have the following beneficial effects: each node can automatically monitor the respective input/output state and has a signal bypassing function; once signals interrupt abnormally, bypass devices are immediately started, the nodes are separated from the network and the signals are directly connected to the following stage; because of the chained network topology, each node only communicates with the two adjacent nodes, so the signal drive capacity is greatly improved and longer distances and more nodes can be driven; and the quantity of the needed cable cores is small and the data traffic is large, so the automatic address allocation function can be achieved, thus greatly reducing the workload of construction.

The invention relates to an isolation type DC/DC power converter and is to provide a combination converter capable of realizing output tight adjustment. A primary side winding of a transformer is formed by a first winding and an auxiliary winding, wherein the first winding is connected with the output of an inverter circuit, and the auxiliary winding is connected to an un-isolated DC-DC converting circuit through a second rectifier circuit; an output capacitor of the un-isolated DC-DC converting circuit is connected in series with an input DC voltage to serve as DC input of the inverter circuit; a DC output voltage is sampled on a resistor connected in parallel to the output capacitor and sent to an isolation feedback circuit; and the isolation feedback circuit sends a duty ratio regulation signal to the un-isolated DC-DC converting circuit to realize tight adjustment of the output voltage. Magnetic core utilization rate of the transformer can be maximized, and efficiency and power density are improved; stability and regulation of the output voltage can be realized without changing switching frequency of a resonance circuit; only one main isolation transformer is needed in the topology, thereby reducing magnetic core quantity; and the rectifier circuit at the secondary side of the transformer can adopt the synchronous rectification technology easier.

The invention relates to the technical field of no synchronous lines, in particular to a light curtain detection method and device without special synchronous lines, and the method comprises the steps: controlling a TX light curtain to emit a light source through employing a special lighting sequence and a lighting period, and completing one round of lighting; in the lighting process, through theRX, performing receiving synchronization; if synchronization fails, the RX receiving and selecting periodic continuous sampling of a head lamp at the first time; when signals exist for N times continuously, starting a timer, and after entering the timer, performing ADC data acquisition and comparison; if there is no signal for the first time and taillight signal collection for the second time succeeds, judging that synchronization succeeds, or otherwise, judging that synchronization fails in any other mode; if synchronization succeeds, calculating the state according to the collected signals,if synchronization fails and timeout occurs, directly judging that the state is shielded; and finally, outputting a result according to the light curtain state, and after output, the light curtain repeating the above steps. The method is simple, the number of cable cores and an anti-interference and protection circuit of the synchronous line can be reduced, the cost is reduced, and the performanceis consistent with that of a light curtain of the synchronous line.

The invention discloses a radar signal processor external communication control system. The radar signal processor external communication control system comprises an FPGA, which comprises a transceiving module used for interface management and transceiving of serial communication; a DSP, which is connected with the FPGA, and is used for control of transceiving time sequences, processing of communication protocol content, and configuration of communication parameters; and a connector, which is in a bidirectional connection with the FPGA. The radar signal processor external communication control system is advantageous in that the internal resources of the FPGA and the DSP are fully used, and a special 422 communication chip is not required, and corresponding peripheral circuit design is reduced, and therefore the communication control of the signal processor over other components of the radar is realized stably, and power consumption of a single device and device costs are reduced; parameter configuration is realized, and the requirements of the system on the diverse working modes are satisfied.

The invention relates to a high-altitude wind power generation device in the field of wind power generation. The wind power generation device comprises three parts including a high-altitude suspensiondevice, a traction cable and a ground recycling system. The high-altitude suspension device is a kite with multiple rotors, the high-altitude suspension device can be lifted up and down through the multiple rotors, and the multiple rotors can generate electricity. In the process of power generation at the high altitude, wind power can be generated by a sail, empennage windward area adjusting andswitching of the multiple rotors from the power generating state to the power consumption state to maintain the relative position of the suspension device at the high altitude, so that the high-altitude suspension device conducts suspension power generation within a certain space range. During multi-unit cluster distributed power generation, the high-altitude space utilization rate is improved, and it is ensured that the problems of position interference and cable entanglement cannot be caused when all units operate in coordination. In the manner, wind power generation is not limited by regions, and large-scale application can be achieved.

The invention discloses a contact type elevator power transmission system. The system comprises a storage battery arranged on a car and used for supplying power for an electric load in the car, and the system further comprises a plurality of first contact plates on an elevator shaft wall and a second contact plate on the car of the elevator, wherein the plurality of first contact plates, through an electronic switch controlled by a door open/close in place signal of each floor, are connected with a rectification circuit electrically connected with a commercial power, the second contact plate is connected with the storage battery, and a contact of the second contact plate is electrically connected with the contacts of the first contact plates. The contact type elevator power transmission system can be electrically connected with the second contact plate through the first contact plates by adopting the electronic switch controlled by the door open/close in place signal of each floor when the door of the elevator opens, so that the commercial power charges the storage battery on the car, and the storage battery supplies power for the electric load in the car, in this way, the number of cores of wires in a traveling cable of the elevator is reduced, and simultaneously, interference of the electromagnetic field generated by a power line to the control signals in the traveling cable is avoided.

The invention discloses a variable-current power transmission system of a tidal current generator unit, and a working method thereof; the variable-current power transmission system comprises a plurality of water-turbine generator sets which are respectively and sequentially connected with a corresponding electric reactor and a three-phase full-controlled rectifier; an output end of each three-phase full-controlled rectifier is respectively connected with a storage battery and a three-phase full-controlled inverter; a back-to-back structure is formed by each three-phase full-controlled rectifier and each three-phase full-controlled inverter; and an output end of each three-phase full-controlled inverter is connected with an electrical load by an inductance filter and an alternating-current transformer. The three-phase controlled rectifier adopts a three-phase full-controlled space vector pulse width modulation (SVPWM) rectifier, and the invention has the advantages of reducing the number of devices on a carrier platform, simplifying the system and reducing the consumption.

The invention relates to the technical field of aerospace, in particular to a multistage rocket separation electric connector insertion state detection device and a rocket thereof. According to the multi-stage rocket separation electric connector insertion state detection device, no matter when the separation electric connector in each stage is used for ground testing or flying in the air, only asignal line led out from a negative bus is connected with the intelligent detection combination of the stage, and the transmission of an insertion state signal is realized. Therefore, the number of cores used for detecting the plugging state of the separated electric connector of each stage is one, the occupied number of cores is saved by about 75% compared with a traditional detection method, thesize of the separated electric connector is reduced, the connection complexity and weight of a cable network are reduced, and the carrying capacity of a rocket is improved.

The invention discloses an active data transmission system for a seismic exploration system. The seismic exploration system is provided with multiple collection nodes connected to a transmission line;the active data transmission system is used for supplying power for various collection nodes of the seismic exploration system, and transmitting data among various nodes; the active transmission system comprises a power supply end and a power receiving end; the power supply end is configured on the former collection node, and the power receiving end is configured on the next collection node, andthe power supply end and the power receiving end have the power module. The active data transmission system for the seismic exploration system performs multiplexing transmission by adopting a way of coupling the power supply and the data, the weight of the data transmission line and the cable core number are reduced; the cable of the seismic exploration system can be saved after the system is saved, the manpower and the material resource are saved, and the system brings great convenience for the field construction.

A mixed type stepping motor can reduce the number of rotor cores when a multi-layer rotor is mounted, and raise assembly efficiency and motor characteristics. The mixed type stepping motor comprises a first rotor core (4) which is arrange around a rotor shaft (1) and provided with a first rotor polar tooth (4a) on the outer circumference surface; a first rotor magnet (6) arranged concentric with the rotor shaft (1) near the first rotor polar tooth (4a); and a second rotor polar tooth (5a) which is laminated across a magnetic body (7) at two sides of the axial direction of the first rotor core (4), arranged around the rotor shaft (1), and provided with a second rotor polar tooth on the outer circumference surface, wherein an axial direction lamination thickness of the first rotor core (4) is bigger than that of the second rotor core (5), a plurality of magnetic circuits are formed simultaneously in the axial direction, and among the magnetic circuits, magnetic flows of the first rotor magnet (6) starts from the first rotor polar tooth (4a), passes through an opposed stator polar tooth (8a), the second rotor core (5) at two sides of the axial direction, and the magnetic body (7), and returns back to the first rotor magnet (6).