30results about How to "No need to increase the number" patented technology

An ultrasonic sensor includes a transceiver block having a transceiver device for transmitting and receiving ultrasonic waves, and a circuit board mounted with an electronic circuit for processing ultrasonic signals transmitted and received through the transceiver device. A housing of the ultrasonic sensor includes a storing portion having an opening. The circuit board is stored within the storing portion, and the opening of the storing portion is closed by the transceiver block.

The invention discloses a double-rotor internal combustion engine, which comprises a cylinder, a main shaft, left and right rotors, and a left and right intermittent motion mechanism. The cylinder includes an axially penetrating cylinder hole, the rotor includes blades and a support body, and the intermittent motion mechanism is a closed differential gear train including a non-circular gear pair, which can realize continuous and smooth shifting. The left rotor, right rotor and main shaft are located inside the cylinder and have coaxial rotation degrees of freedom. The blades of the two left and right rotors are radially juxtaposed, and the space between the blades constitutes a combustion chamber. The two rotors rotate periodically and intermittently during the ignition, power, exhaust, suction, and compression processes of the internal combustion engine, and the left rotor moves When the right rotor is stationary, the left rotor is stationary when the right rotor is moving. The left and right rotors transmit their respective intermittent rotations to the main shaft through the left and right intermittent motion mechanisms, and convert them into constant rotational speeds. Under the action of inertia, the main shaft feeds back its own rotation to the left and right rotors to control its acceleration, deceleration and static process.

The invention discloses a data acquisition system and a device thereof, belonging to the technical field of communication. The invention solves the problem of poor system stability due to frequent switching of an active / standby server in a data acquisition system in the prior art. The data acquisition system comprises at least two data acquisition servers, wherein at least two data acquisition servers form at least two server groups which are both under operation condition and acquire data from a control station in the management scope. The technical scheme of the invention can be applied to the communication system with high requirement for reliability.

The invention relates to a motorcycle which comprises a saddle at the rear wheel top, a muffler of an exhaust system between the saddle and the rear wheel and a locking arm holding part for holding the anti-theft locking arm. The locking arm is provided with a left and a right arm and a connecting part for connecting the ends of the left and the right arm. The locking arm holding part is arranged under the saddle adjacent to the front of the muffler and is configured to hold the locking arm under the following state: the back of the locking arm and the muffler are basically at the same height and the front of the locking arm is arranged at the position lower than the muffler, or under the following state: the locking arm shifts to one side of the width direction of the vehicle from the central line of the vehicle along the central line of the width direction of the vehicle, with an exhaust pipe to the muffler to be arranged in parallel to the locking arm holding part at the width direction of the vehicle, a part of exhaust pipe and locking arm holding part arranged in parallel at the width direction of the vehicle and an opposite side bending from the central line of the vehicle to the locking arm holding part.

The invention discloses a rotary valve, which comprises a stator, a rotor arranged in the stator, a driving mechanism for driving the rotor to rotate, and a sealing cover connected with the stator; a small gap exists between the stator and the rotor; a gas channel is arranged in the rotor; a high pressure gas buffer chamber and a low pressure gas buffer chamber are arranged in the circumferentialdirection of the rotor, and are respectively provided with a notch; the circumferential direction of the rotor is also provided with a groove communicated with the gas channel; and the stator is provided with a high pressure gas inlet communicated with the high pressure gas buffer chamber, a low pressure gas inlet communicated with the low pressure gas buffer chamber, and a gas trough communicated with the groove. The rotary valve can reduce the switching resistance between high pressure and low pressure in the rotary valve, improves switching efficiency, reduces the complexity of a rotary valve system, and has reliable operation, long service life and low noise.

The present invention provides a node device, which relates to the communication field. Two N×N wavelength selective switches are used to form a parallel structure, and the two ends of each power divider are respectively connected to the input ends of the N×N wavelength selective switches, so that The two ends of each power combiner are respectively connected to the output ends of N×N wavelength selective switches, so that the routing switching selection work originally performed before multiple 1×M wavelength selective switches is transferred to the internal implementation of N×N wavelength selective switches Compared with the original structure using discrete devices, the purpose of simplification is achieved, and when the business volume expands, there is no need to increase the number of line-side module slots, which ultimately reduces the cost of use. The invention is used for signal transmission within a node.

A waterproof type electronic device is composed of a disc lid (13) capable of opening and closing an opening portion (17) of a camera apparatus body (2), a buckle (12) capable of detachably fastening the disc lid (13) to the camera apparatus body (2) and a sealing member (24) provided on at least one of the buckle (12) and the camera apparatus body (2) to hermetically seal the buckle 12 and the camera apparatus body (2). When the disc lid (13) is fastened to the camera apparatus body (2) by the buckle (12), the camera apparatus body (2) is hermetically sealed at least at its part of the portion covered with the buckle (12). In this kind of related-art waterproof type electronic device, operation buttons are not formed so as to have waterproof structures and water and water component can therefore enter this waterproof type electronic device relatively easily. If the operation buttons are formed so as to have waterproof structures, then such waterproof structures are increased in space from a structure standpoint and hence the overall arrangement of the apparatus may not be made compact in size.

The present invention relates to a digital predistortion device and a method, which are applied to a multichannel single amplifier broadband digital wireless communication system and belong to the technological field of wireless communication. The device includes a time-delay filtering array, a synchronization switch, a quadrature demodulator, an analog-to-digital converter, a time-delay frequency conversion array connected with the synchronization switch and a digital predistortion unit, wherein all the units are connected in order, the input end of the time-delay filtering array is connected with the output end of a power amplifier of the multichannel single amplifier broadband digital wireless communication system, the input end of the digital predistortion unit receives the frequency conversed digital baseband signal, and the output end of the digital predistortion unit outputs a digital carrier. The digital predistortion device and the method resolve the predistortion problem of a multichannel single amplifier broadband digital wireless communication system.

The invention discloses a substrate integrated waveguide filter which is high in selectivity, small in size and low in loss. The substrate integrated waveguide filter comprises a first metal layer, a first dielectric substrate, a second dielectric substrate, a second metal layer and a metallization through hole array, the first metal layer, the first dielectric substrate, the second dielectric substrate, the second metal layer and the metallization through hole array are sequentially stacked from top to bottom, and a first band-shaped coupling unit and a second band-shaped coupling unit are arranged between the first dielectric substrate and the second dielectric substrate. By means of the substrate integrated waveguide filter, the LTCC technology is adopted for integrating the band-shaped coupling units into resonant cavities of the substrate integrated waveguide filter, a signal transmission channel can be added without increasing the number of the resonant cavities, a transmission null point can be accordingly obtained in an attenuation band, and the selectivity of the filter is improved; meanwhile, the position of the transmission null point can be flexibly controlled by adjusting the resonant frequencies of the band-shaped coupling units, more stages of the resonant cavities are not needed, and the substrate integrated waveguide filter has the advantages of being small in size, light in weight and low in loss. The substrate integrated waveguide filter is suitable for popularization and application in the microwave millimeter wave technical field.

The invention discloses a motorcycle. The motorcycle comprises: a rear arm (14), a rear wheel is pivotally supported at one end of the rear arm, and the other end of the rear arm is pivotally supported by a frame (2) through a pivot support shaft; Between the rear arm (14) and the frame (2) is a buffer device (30) located between the pivot support shaft and the rear wheel; a lock arm placement portion for accommodating the anti-theft lock arm (41), the lock arm has Left and right arm portions (41a, 41b) and a curved portion (41c) connecting ends of the left and right arm portions (41a, 41b) to each other. The lock arm placement portion is configured to accommodate the lock arm (41) in a state where the left and right arm portions (41a, 41b) of the lock arm (41) are located on both sides of the buffer device (30).

The invention discloses a turbulence suppression method and device for pre-compensating transmitted optical power in reverse modulation optical communication. The device is divided into an inquiry end and a reverse modulation end. The inquiry end emits laser light, which is transmitted to the reverse modulation after the beam is collimated through an optical antenna. At the end, the modulator at the reverse modulation end modulates the input signal onto the laser light sent from the inquiring end, and reflects back the original direction of the laser light sent from the inquiring end through the "cat's eye" effect; The mechanism senses the size of the received signal through the light intensity amplitude sampling module, so that the transmitted optical power can be adaptively changed. The invention can maintain the received light intensity at a constant value, thereby suppressing the influence of atmospheric turbulence on reverse modulation wireless optical communication, and realizing reverse modulation wireless optical communication with better performance.

The invention provides a hardware acceleration method, and the method comprises the steps: collecting an analog quantity, wherein the data format of the analog quantity is a binary format; convertingthe data format of the analog quantity into a floating-point number; and according to preset parameters, performing parallel operation on floating-point number multiplication and floating-point numberaddition, and obtaining a calculation result.

The invention discloses a double-loop structure and a slot antenna based on the structure. The double-loop structure includes two lower metal strips and an upper metal strip corresponding to the lower metal strips. The upper metal strip and the lower metal strip The two ends of the strip are respectively connected by metal pillars to form two symmetrical parasitic rings, and a switch tube for controlling the switching of the parasitic ring and a bias circuit for controlling the switch tube are arranged on the parasitic rings. It forms parasitic ring pairs by upper metal strips, lower metal strips and metal posts, and realizes pattern reconstruction by controlling the disconnection of parasitic ring pairs. Since it depends on the original working mode of the gap, the pattern points to There is more room for change; in addition, there is no need to increase the number of networks and array elements, and the structure is simple and the occupied area is small.

The invention relates to a detachable quenching tank built-in combination type flow guiding cover. The flow guiding cover comprises a conical base fixed to the lower part of a quenching tank and a flow guiding cover unit detachably arranged on the conical base in a sleeving manner in a vertical direction, wherein the flow guiding cover unit comprises at least one flow guiding cover assembly; the flow guiding cover assembly comprises a conical body section and a vertical outlet section which are sequentially arranged from the bottom to the top; the bottom diameter and conicity of the conical body section are matched with those of the conical base, and the shape and size of the vertical outlet section of each flow guiding cover assembly are matched with those of a to-be-quenched workpiece; and the outer side surface of the conical base is provided with a locating cone, and the bottom edge of the flow guiding cover assembly is pressed against the locating cone and is fixedly connected with the conical base. Compared with the prior art, the flow guiding cover has the advantages that the structure is flexible, can be timely changed and regulated, is convenient to assemble and disassemble and has great applicability; the defects of the existing fixed type flow guiding and equalizing device can be overcome under the condition of ensuring economical benefit; and the universality of the quenching tank is improved, and the application prospect is great.

A motorcycle, comprising a rear arm (14) having one end pivotally supporting a rear wheel and the other end pivotally supported on a body frame (2) through a pivot shaft, a cushion unit (30) installed between the rear arm (14) and the body frame (2) so as to be positioned between the pivot shaft and the rear wheel, and a lock arm placing part storing a theft prevention lock arm (41) having left and right arm parts (41a) and (41b) and a bent part (41c) connecting the end parts of the left and right arm parts (41a) and (41b) to each other. The lock arm placing part is formed to store the lock arm (41) so that the left and right arm parts (41a) and (41b) of the lock arm (41) can be positioned on both sides of the cushion unit (30).

The invention discloses a multi-irradiation target material irradiation test core structure, arrangement and operation method, which solves the problem that materials with different target fluence requirements cannot be simultaneously put into the pile and transferred at the same time in the current HFETR material irradiation. The problem of stacking and stacking at the same time. In the present invention, the horizontal cells of the HFETR core are numbered with letters from A to V from top to bottom, the oblique cells of the HFETR core are numbered with numbers 1 to 12 from left to right, and G7, P15 and K7 are set as irradiation tunnels, and irradiation devices with target materials are installed in the irradiation tunnels; two strong absorber targets are set at the positions adjacent to G7, and one is set at the positions adjacent to K7 A strong absorber target and a beryllium block, and a beryllium block and two strong absorber targets are set adjacent to P15. The present invention can meet the effect that three batches of materials are simultaneously put into the pile, turned and turned out of the pile at the same time, and reach the target value at the same time without changing the number of fuel elements.