189results about How to "Help miniaturization" patented technology

The invention relates to the technical field of unmanned aerial vehicles and discloses a pan-tilt attitude detection method and a pan-tilt attitude detection device. The method comprises the following steps: acquiring data of a pan-tilt inertia measurement unit, wherein the data of the inertia measurement unit includes angular velocity data of a gyro and accelerometer data; performing quaternion integral operation on the data of the inertia measurement unit; changing the data of the inertia measurement unit from quaternion expression into rotation matrix expression; and changing the data of the inertia measurement unit from the rotation matrix expression into eulerian angle expression, wherein the step of performing the quaternion integral operation on the data of the inertia measurement unit comprises the following sub-steps: by taking the rotation matrix expression as feedback, performing feedback correction on the quaternion expression, acquiring pan-tilt attitude data through an attitude heading system, performing pan-tilt attitude expression by adopting different algorithms and compensating and correcting the pan-tilt attitude. Therefore, the accuracy of the pan-tilt attitude detection is improved.

A high-frequency circuit comprising a switch circuit connected to an antenna terminal, first and second diplexer circuits connected to the switch circuit, first and second power amplifier circuits connected to the first diplexer circuit, first and second bandpass filter circuits connected to the first and second power amplifier circuits, a third bandpass filter circuit connected to the second diplexer circuit, a detection circuit disposed between the switch circuit and the first diplexer circuit, and a low-noise amplifier circuit disposed between the switch circuit and the second diplexer circuit.

PURPOSE: To provide a battery cap unit which prevents degradation of accuracy of a protection unit by using a heat sensitive switch as one and can constitute a compact, fit for assembly, and low-cost battery by integrating and unitizing the protection unit with a battery cap body. CONSTITUTION: The unit is provided with a metal battery cap body 2 sealing a battery cell 1 used for a secondary battery and shielding the inside of the cell, and a heat sensitive switch 4 making changeover of switching at a given temperature, and it is so structured that the heat sensitive switch 4 is fitted to the battery cap body 2 and the heat sensitive switch 4 and the battery cap body 2 are integrated, to aim at unitization.

The invention relates to a multi-sensor-based micro-satellite attitude determination method, which determines the attitude of a micro-satellite by using a MEMS gyro, a magnetometer and a sun sensor asattitude determination sensors based on an improved federated filtering algorithm. According to the present invention, the application background of the micro-satellite is fully considered, and the sensors with advantages of low cost, small volume, low power consumption and the like are selected as the attitude sensors, wherein the MEMS gyro is used as the main attitude sensor, the initial attitude determination information is obtained through integral, and the magnetometer and the sun sensor are used as the auxiliary attitude sensors to timely correct the attitude determination result of theMEMS gyros; and the improved federated filtering algorithm is provided, and achieves the attitude calculation and information fusion based on the sensors, such that the attitude determination precision of the micro-satellite attitude determination system is effectively improved, and the advantages of excellent good fault tolerance, good real-time performance and the like are provided.

The invention discloses a single-optical-port wavelength division multiplexing/demultiplexing photoelectric transceiver device. A pin and a glass carrier are respectively arranged above and below a collimating lens of the device. A total reflector plate and a band-pass optical filter array are respectively bonded on the upper surface and the lower surface of the glass carrier. A glass partition is arranged below the glass carrier. An optical circulator is arranged above the glass carrier or on one side surface of the glass partition. A laser transmitting module and a detector receiving module are respectively arranged on the two side surfaces of the glass partition. The single-optical-port wavelength division multiplexing/demultiplexing photoelectric transceiver device has the advantages that since the laser module and the detector module share the same multiplexer/demultiplexer and one public optical port, the input and the output of downlink detector signals and uplink laser signals from the same optical port can be realized, the used device cases and the size of a module can be effectively reduced, the miniaturization and the integration of the device and the module are facilitated and the working wavelength of the device can be applied to the situation of simultaneous working of multi-channel wavelength of CWDM (Coarse Wavelength Division Multiplexing) and LWDM (LAN Wavelength Division Multiplexing).

An image scanner includes a light source (2), an imaging optics system (1), an imaging element section (41), a memory (5), and a processor unit (6). The imaging optics system is an optics system for collecting scattered light reflected on an object being imaged to image such collected light as a picture image, and has a plurality of cells (11) and the like which are arranged plurally in a main scanning direction (211) as independent imaging optics systems respectively and form a telecentric optics system at a manuscript side, while arranging the cells in two lines in a sub-scanning direction (212). Each cell in a respective line is arranged in a zigzag pattern in the main scanning direction such that imaged pictures can be complemented between each cell in the sub-scanning direction. The imaging element section is arranged corresponding to each of the cells. The processor unit restores the image information stored on the memory to the picture images and synthesizes those picture images to create a manuscript image.

The present invention aims to provide an engine device which allows a gas purifying filter (1) as a part constituting an engine (70) to be highly rigidly mounted to the engine (70), which eliminates the need that each device of a vehicle has countermeasures for exhaust gas, and which enhances the versatility of the engine (70). The engine device provided by the invention is provided with a diesel engine (70) having an exhaust manifold (71), and also with an exhaust gas purifying device (1) for purifying exhaust gas discharged by the diesel engine (70). Filter support bodies (19) for supporting the exhaust gas purifying device (1) are provided to the upper part of a flywheel housing (78) of the diesel engine (70). The exhaust gas purifying device (1) is connected to the exhaust manifold (71) and also connected to the flywheel housing (78) through the filter support bodies (19).

The invention discloses a method and device for an FPGA (field programmable gate array) to communicate with a DSP (digital signal processor) via a DDR2 (double data rate 2) interface. The method comprises: initializing the DDR2 interface in the electric starting process; receiving timing sequence configuration of a DDR2 controller of the DSP; generating a reading and writing timing sequence according to reading and writing instructions and the timing sequence configuration when receiving the reading and writing instructions sent by the DDR2 controller; and performing reading and writing operations indicated by the reading and writing instructions at the reading and writing timing sequence. By utilizing the method and the device, the FPGA is enabled to communicate with the DSP via the DDR2 interface, thus the cost and resource consumption of the FPGA chip devices communicating with the DSP are reduced.

Disclosed is a preferable structure for an external electrode which is used in a multilayer ceramic capacitor and also serves as a resistor element. The external electrode having such a structure is not reduced even by firing in a reducing atmosphere, thereby allowing an internal electrode to use Ni or a Ni alloy, and realizes good electrical connection with the internal electrode. Specifically disclosed are external electrodes (6, 7) formed on the outer surface of a capacitor main body (2) which respectively have a structure comprising a conductive layer (8) and a metal plating layer (9) formed on the conductive layer (8). The conductive layer (8) has a composition containing a glass component and a complex oxide such as an In-Sn complex oxide that is reactive with Ni or a Ni alloy.

The present invention provides an inkjet head liquid feeding device and an inkjet head cleaning device, which do not cause the complexity of the pipeline and do not cause gas to remain in the liquid delivery pipeline when the liquid material is supplied to the inkjet head, Furthermore, the hydraulic pressure of the liquid material supplied to each inkjet head is made uniform. Each independent liquid-feeding pipeline (3) used for supplying the liquid material communicated with a plurality of ink-jet heads (4) respectively is connected to a common liquid-feeding pipe communicated with an ink tank (1) storing a kind of liquid material On the road (2), and each independent diffuser pipeline (19) that can circulate gas is connected to the bypass pipeline (18a) (common diffuser pipeline 18) that can be opened and closed to the atmosphere. The gas pipeline (19) and the common liquid delivery pipeline (2) communicate with each connecting portion of each independent liquid delivery pipeline (3), or each inkjet head (4), or both of them respectively.

To realize a thin plate material having a distribution state of nonmetallic inclusions effective at improving fatigue resistance characteristics in a type of stainless steel having a high Si content in which deformation-induced martensite is generated. A thin steel plate comprising, in terms of mass%, 0.010-0.200% C, over 2.00% and no more than 4.00% Si, 0.01-3.00% Mn, 3.00% to less than 10.00% Ni, 11.00-20.00% Cr, 0.010-0.200% N, 0-3.00% Mo, 0-1.00% Cu, 0-0.008% Ti, and 0-0.008% Al, the remainder being Fe and unavoidable impurities, the distance between particles in a rolling direction being20 [mu]m or less, the distance between particles in a plate thickness direction being 10 [mu]m or less, and the number density of nonmetallic inclusions having a length in the rolling direction of 40[mu]m or greater being 3.0 inclusions/mm2 or less in an L cross-section.

The invention belongs to the technical field of robots, and particularly relates to a symmetrical robot joint. The symmetrical robot joint comprises a base, a waist seat, a big arm, a three-axis assembly, a small arm, a wrist shaft assembly, and an end flange which are rotatably connected in sequence, wherein a five-axis driving mechanism and a six-axis driving mechanism are symmetrically arrangedin the small arm, the five-axis driving mechanism is connected with the wrist shaft assembly and used for driving the wrist shaft assembly to rotate around a fifth axis relative to the small arm, thesix-axis driving mechanism is connected with the end flange and used for driving the end flange to rotate around a sixth axis, and the sixth axis is perpendicular to the fifth axis. A precision speedreducer of the symmetrical robot joint is transferred from the six-axis axis position to the five-axis axis position, the hollow performance, the miniaturization and the flexibility of the six-axis are improved, and therefore, the transmission viscous resistance is small, the energy-saving and environment-friendly efficiency is high, the inertia is small, and the control difficulty is low.