162results about How to "Does not affect the design" patented technology

The invention discloses a method for estimating the initial heading deviation filtering. The method for estimating the initial heading deviation filtering comprises the following steps: preparing two main boats equipped with high-precision inertial navigation equipment to send subaqueous sound ranging signals with time stamps to a slave boat alternatively; carrying out dead reckoning by the slave boat by utilizing the speed measured by a Doppler velocimeter and the heading measured by an MEMS (Micro-electromechanical Systems) gyroscope, and calculating the distance between each main boat and the slave boat by multiplying the time difference of sending and receiving submarine sound signals and the sound velocity; updating and amending the position of the slave boat by using Kalman filter algorithm, estimating and compensating the initial heading deviation of the gyroscope. According to the method, through the radio broadcasting positional information of the main boat, the slave boat passively receives radio signals transmitted by the main boat, so that the expansibility is improved, and the condition of multiple slave boats can be simulated by using two main boats and one slave boat; the slave boat is provided with low-precision inertial navigation equipment for pushing, and the high-precision inertial navigation equipment of the main boat is utilized by measuring the distance between the slave boat and each main boat, thus the positioning precision is improved, and the equipment cost is greatly reduced.

A method of providing a watercraft, especially an icebreaker or a cargo ship, tanker or similar transport vessel, with improved ice penetration characteristics and a watercraft manufactured according to the method, which watercraft has a hull (1) with a first end (2) and a second end (3) and which is equipped at said second end with a propulsion arrangement, which provides the main propulsive thrust of the watercraft, while the watercraft moves with either end ahead, and the steering of the watercraft, whereby said second end (3) of the watercraft is shaped and designed so that it, as such, has efficient ice penetration characteristics. Said propulsion arrangement is chosen so as to include at least three propulsion devices, at least the majority of which are rudder propeller devices (4) and which are arranged at least at two different distances from said second end (3) of the watercraft so that when the watercraft moves in ice or ice build-ups said second end (3) ahead, the propeller with one or more propulsion devices located near said second end (3) of the watercraft is arranged to break ice and the propeller with one or more propulsion devices located farther away from said second end (3) of the watercraft is arranged to remove disintegrated ice or ice chunks away from the ice build-up.

The invention provides a driving circuit of a liquid crystal display panel and a liquid crystal display panel using same. The driving circuit is used for outputting a plurality of clock control signals for driving scanning lines of the display area of the liquid crystal display panel in a one-to-one manner after passing through the GOA circuit of the liquid crystal display panel. The driving circuit and the liquid crystal display panel are characterized in that the driving circuit uses the clock control signals with preset waveforms, wherein the preset waveforms are periodical square waves; the high levels of the preset waveforms periodically increase; and furthermore the time lengths of the periods of the preset waveforms are same. The driving circuit and the liquid crystal display panel have advantages of reducing brightness differences in the vertical direction and the left-and-right direction of the liquid crystal display panel, improving driving capability of the GOA circuit, realizing higher display brightness uniformity of a large-dimension high-resolution liquid crystal display panel, and obtaining higher definition of a displayed picture.

The invention discloses a radiofrequency shielding device inside a mobile phone, which comprises that: a support type PIFA antenna support is arranged on the top or the tail end of a mobile phone mainboard; the side wall near the antenna support is provided with a shielding support and a shielding cover; the lengths of the shielding support and the shielding cover are equivalent to that of the antenna support; the shielding cover is covered on the shielding support; the shielding support keeps close to a copper exposed area of the mainboard, is earthed and is arranged close to the rear wall of the antenna support to ensure that one folding edge of the shielding cover near the antenna support can keep close to the rear wall of the antenna support and extend upward along the rear wall of the antenna support until the top of the antenna support to form a shielding wall which surrounds the antenna and radiates toward the interior of the mobile phone; and other three folding edges of the shielding cover are clamped on the shielding support. The invention reduces the interference of radiofrequency signals of the antenna of the mobile phone to other interior sensitive devices by rationally adjusting the layout of the antenna support, the shielding support and the shielding cover.

The invention relates to a waste heat recycle device for automobile cooling water and belongs to the field of waste heat recycle. Waste heat of the cooling water is recovered for low-temperature start of an automobile; the waste heat recycle device is provided with a heat storage and exchange device (1) internally equipped with a phase change heat storage material (3); the waste heat recycle device is internally provided with independent heat exchange units for transmitting and circulating heat outside with different heat-conducting working media and different circulation pipelines to heat an object; water serves as the heat-conducting working medium; the waste heat can be transmitted into the heat storage and exchange device (1) through the corresponding heat exchange units, and recovered and stored in the phase change heat storage material (3); the heat can also be transmitted outside to preheat the cooling water for the low-temperature start of an engine; in addition, preheated machine oil can be pumped into a main oil gallery of the engine first through the circulation pipeline of the heat transmission working medium, namely the machine oil, enters friction pairs to establish oil pressure, and can greatly reduce the friction during the low-temperature start of the engine; and the waste heat recycle device is energy-saving, environment-friendly, simple in structure, easy to implement and convenient to mount and use, does not influence the original automobile design, facilitates standard and industrial production, and is applicable to various motor vehicles.

The invention provides a portable computer and a keystroke device, in particular to a device and a method of performing keystroke by using the change of electrostatic capacity. The key device of the portable computer is characterized in that the keystroke device comprises a plurality of electrostatic capacity units sensing the electrostatic capacity, a signal checkout unit and a signal transmission unit. The electrostatic capacity units are arranged on the lower part of a main frame. The signal checkout unit checkouts the sensing signals of the electrostatic capacity unit in the form of a keying signal. And the signal transmission unit transmits the checkout sensing signals to a system according to the signal checkout unit.

The invention relates to the field of cars, in particular to a palm print authentication-based car starting method. The palm print authentication-based car starting method provided by the invention comprises the following steps: 1, performing collection on palm prints of a hand by using a palm print collection instrument, then, transmitting collected palm print information to a palm print processing and recognition unit, and performing preprocessing on the palm print information by the palm print processing and recognition unit; 2, performing classification authentication on the palm print information by using a field feature line segment classifier. The palm print authentication-based car starting method disclosed by the invention has the beneficial effects that discriminant authentication is performed on the palm print information by using comparatively popular nearest feature line classification, and thus, a car owner can realize car starting only by inputting the own palm print information and passing authentication, and other people cannot start the car; the problems of extension inaccuracy and computational complexity of a nearest feature line are also improved.