32results about How to "Design does not affect" patented technology

The invention provides a U-shaped pipe underground fluid multilayer sampling device. The U-shaped pipe underground fluid multilayer sampling device comprises a ground auxiliary system, a supporting system, a gas getting unit, water getting units and interlayer packers. The gas getting unit, the water getting units and the packers are arranged on a supporting connection rod of the supporting system. The gas getting unit is arranged in an aeration zone above a water table, the water getting units are arranged below the water table, the packers are mixed with the gas getting unit and the water getting units, waterpower incontinuity of upper parts and lower parts of sampling units in sampling layers of different aquifers or the same aquifer is achieved, and underwater of the different aquifers is sealed and cannot be mutually disturbed by drilled channels. The U-shaped pipe underground fluid multilayer sampling device is simple and novel in structural design and free of starting pressure, the service life of equipment is prolonged, the sample introduction speed is increased, the cost is reduced, and the application range is wider.

The invention discloses a combustible gas detector. The combustible gas detector is composed of a power management unit, a main control chip unit, a sensor and an interface circuit unit, an output alarm unit, a V / I conversion circuit unit and a communication circuit unit, wherein the power management unit is connected with the other units and can provide power for the other units; the main control chip unit is connected with the sensor and the interface circuit unit, the communication circuit unit, the output alarm unit and the V / I conversion circuit unit, controls the communication circuit unit to be communicated with an upper computer, carries out digitization on data processed through the sensor and the interface circuit unit, and configures an interface circuit connected with the sensor and the interface circuit unit; and the communication circuit unit, the output alarm unit and the V / I conversion circuit unit are enabled or prohibited through the main control chip unit. The combustible gas detector provided by the invention is connected with an upper computer PC with display and interface operational software through a communication module, the parameter calibration such as internal compensation and gain of the combustible gas detector is realized in an on-line manner through the operation on the software, the detecting precision is less influenced by temperature, and large-scale manufacturing and calibration are conveniently realized.

The invention discloses a method for preparing antibacterial protein by utilizing aquatic product leftovers. The method comprises the following main steps: mincing the fresh aquatic product leftovers for later use, crushing vegetable feed proteins, and filtering the crushed vegetable feed proteins by virtue of a 60-mesh screen for later use; mixing the minced aquatic product leftovers and the crushed vegetable proteins, and uniformly mixing nutrients and water to be used as a fermenting culture base; sterilizing and cooling the fermenting culture base, placing bacillus subtilis HL-1 capable of generating subtilin, and carrying out the solid aerobic fermentation; drying, crushing and packaging the fermented product to obtain the antibactieral feed protein. The prepared antibacterial feed protein is rich in subtilin, nutritional small peptide and probiotics and has a good function of promoting the growth and resisting the diseases. By adopting the antibacterial feed protein, not only can the utilization rate of the protein be increased, but also the antimicrobial-free feed can be prepared by utilizing the antibacterial feed protein, and the application prospect and the social benefit are good.

The invention discloses a digital self-calibration circuit of a successive approximation analog-to-digital converter. During analog-to-digital conversion, when carrying out kth bit analog-to-digital conversion, one control code is selected from two selectable control codes according to former bit data at first, and the selected control code is used for controlling a calibration capacitor array and calculating the kth bit data; and before outputting the kth bit data, when carrying out the kth bit analog-to-digital conversion, a logic circuit is controlled to calculate the two selectable control codes corresponding to the (k-1) th bit. The invention further discloses a digital self-calibration method of a successive approximation analog-to-digital converter. The digital self-calibration circuit and method disclosed by the invention can be used for improving the conversion efficiency and the conversion precision, reducing the number of adders and saving the circuit area.

The invention relates to an electrothermal-driven in-plane bistable radio frequency microswitch belonging to the technical field of micro electromechanics. The electrothermal-driven in-plane bistable radio frequency microswitch comprises an electrothermal-driven mechanism, a mechanical locking mechanism and a signal conversion mechanism, wherein the electrothermal-driven mechanism is positioned under the mechanical locking mechanism; and the mechanical locking mechanism is connected with the signal conversion mechanism. The invention can realize the mechanical locking by using a pair of locking contacts, does not require continuous power consumption when keeping in a stable state, also fully develops the advantages of large driving force, high displacement power density and convenient integrated manufacture of an electrothermal driver and can be used as the actuation form of the mechanical locking structure of the switch. The switch has simple structure, foreseeable radio frequency (RF) characteristic, possibility of batch manufacture and practical application and suitability for integral manufacture.

The invention relates to a ceramic shell filtering device. A ceramic shell (1) forms a cavity; the cavity comprises a shunt part (1-2) positioned at the upper part of the shell, a converging part (1-7) positioned at the lower part of the shell, and C-shaped pouring gates in the middle, wherein the upper end of the shunt part (1-2) is an inlet of the filtering device; the lower end of the converging part (1-7) is an outlet of the filtering device; the C-shaped pouring gates are connected in parallel, and are respectively communicated between the shunt part and the converging part; and each of the C-shaped pouring gates is provided with a filter (2). The ceramic shell filtering device realizes the overall filtration of high-flow molten metal outside a casting mold through the design of shunting, filtering and converging, and satisfies the overall filtering requirements of molten metal of a large cast steel piece and an ultra-large cast iron piece outside the casting mold.

The invention relates to a battery temperature control device for a charging and replacing power station, and an electric vehicle charging and replacing power station. The battery temperature controldevice comprises: a pipeline portion, a liquid cooling machine unit and a control portion, wherein the pipeline portion is connected to one or more batteries of the charging and replacing power station and is used for providing a refrigerant for the batteries to heat or cool the batteries; the liquid cooling machine unit is connected with the pipeline portion and is used for cooling or heating therefrigerant provided for the pipeline portion; and the control portion is connected with the liquid cooling machine unit and is used for controlling the liquid cooling machine unit and the pipeline portion. The charging and replacing power station comprises one or more battery temperature control devices, and the battery temperature control device is arranged in a battery compartment in the electric vehicle charging and replacing station. The pipeline portion, the liquid cooling machine unit and the control portion all adopt a split design, the length of a cable or a hose can be adjusted according to specific space layout requirements, the installation positions of the pipeline portion, the liquid cooling machine unit and the control portion are set, and the requirements of internal design and layout diversity of the charging and replacing power station are met.

The invention discloses a fan grid-connected sub-synchronous oscillation suppression and high-frequency harmonic suppression method based on virtual impedance. Aiming at the problem of sub-synchronous oscillation possibly caused by fan grid connection under the background of a complex power grid, an impedance analysis method is adopted for modeling or measuring to obtain a fan converter impedance model and a power grid impedance model, different virtual impedance links are designed at different frequency bands and added into a fan control system, so that the effects of sub-synchronous oscillation suppression and higher harmonic suppression are achieved, and the grid-connected stability of the fan is improved. The fan grid-connected sub-synchronous oscillation and high-frequency harmonic suppression method provided by the invention comprises the following steps of: performing impedance modeling on a fan according to a hardware structure and a control system structure of the fan to obtain fan impedance Zinv; carrying out impedance measurement on a power grid to which the fan is connected by adopting equipment to obtain power grid impedance Zg; separating sub-synchronous frequency and higher harmonic voltage components in the grid-connected voltage, and adding the sub-synchronous frequency and higher harmonic voltage components into a converter control system through designed virtual impedance; and calculating the parameters of the virtual impedance for the sub-synchronous frequency and the higher harmonic according to the national wind power grid-connected stability requirement and the grid-connected harmonic standard. Therefore, the system can show impedance meeting the stability margin under the sub-synchronous frequency and each high-frequency harmonic wave, so that the grid-connected stability of the system is improved, and the sub-synchronous oscillation inhibiting capability and the high-frequency harmonic wave inhibiting capability of the system are improved.

The invention provides a bracket and an image pickup device with the same. The bracket is arranged on a circuit board and connected with an electronic module; the bracket comprises an upper surface, a lower surface and an opening, wherein the upper surface comprises a lower plane part for a plate shaped module to be placed; the lower plane part comprises at least one rough part; the lower surfacecomprises a convex edge connected with the circuit board by adhesives; a space is defined by the convex edge and the circuit board; the opening penetrates through the upper surface and the lower surface so that the gas generated and accumulated in the space while the adhesives are heated leaves away from the opening and the at least one rough part. According to the invention, the gas generated bythe adhesives is prevented from being accumulated in the bracket and the bracket is floated or inclined; the dust is prevented from falling into the interior of the bracket; no influence is generatedon the mold design of the original bracket; no mold cost of the bracket is increased; and the easy separation between the bracket and the circuit board while the bracket and the circuit are collided or seriously shaken is avoided.

The embodiment of the invention discloses a method for realizing the onboard programming of a flash chip and equipment thereof. The method comprises the steps of: receiving a file programming command through a serial port, according to the file programming command and preset configuration parameters, acquiring information about the sector needing to be erased in the flash chip, and erasing the sector on the basis of the sector information; receiving a programming file through the serial port, programming the flash chip according to the programming file and the configuration parameters. The embodiment of the invention simplifies the hardware design of a single board.

The invention provides an antenna assembling structure and a mobile terminal. The assembling structure comprises an antenna body of a metal material, an assembling part of a plastic material and a circuit board; the antenna body comprises feed points, and the circuit board is fixedly provided with metal connecting pieces corresponding to the feed points; the antenna body is embedded into the first surface of the assembling part to form an integral body by injection molding; the feed points of the antenna body are exposed out of the second surface of the assembling part, and the orientation of the second surface is opposite to that of the first surface; and the circuit board is fit to the second surface of the assembling part, and the metal connecting pieces are in press-fit connection with the feed points at the positions where the feed points are exposed. According to the invention, overlapped design space in the mobile terminal is saved, the wiring freedom degree of an antenna circuit is realized, and the material cost and the processing cost are low.

The invention provides a method for eliminating chopping waves and ripple waves and an analogue-digital conversion circuit for realizing the method. The method comprises the following steps of: carrying out two times of sampling on signals in a chopping wave period at an interval which is one half of time of the chopping wave period; and carrying out integration and summation on two times of sampling values so as to keep useful signals and eliminate residual ripple wave signals in the chopping waves. The signal amplification and analogue-digital conversion circuit comprises a chopping wave amplifier and a sigma-delta analogue-digital converter which is cascaded behind the chopping wave amplifier. A switching structure which is embedded into the sigma-delta analogue-digital converter is adopted and an analogue addition function of a first-grade integrator in the analogue-digital converter can be used for carrying out first-order reshaping (voltage summation) on the residual ripple waves of output signals of the chopping wave amplifier, so that the ripple wave amplitude is reduced and influences on the conversion precision of the analogue-digital converter is weakened. The circuit does not need an analogue low-pass filter between the chopping wave amplifier and the analogue-digital converter, so that the power consumption and the area are saved and the design of the circuit is simplified.

A rotary valve internal combustion engine has a piston connected to a crankshaft (3) and reciprocating in a cylinder (2), a combustion chamber (4) partially defined by the piston, and a valve sleeve fixable relative to the cylinder (2) A rotary valve (5) rotating in (8), the rotary valve (5) having a valve body containing a volume (9) that partially defines the combustion chamber (4) and also having an opening (12) at The valve (5) provides successive fluid communication to and from the combustion chamber (4) through the intake and exhaust ports (13, 14) during rotation.

The invention provides a bracket and an image pickup device with the same. The bracket is arranged on a circuit board and connected with an electronic module; the bracket comprises an upper surface, a lower surface and an opening, wherein the upper surface comprises a lower plane part for a plate shaped module to be placed; the lower plane part comprises at least one rough part; the lower surfacecomprises a convex edge connected with the circuit board by adhesives; a space is defined by the convex edge and the circuit board; the opening penetrates through the upper surface and the lower surface so that the gas generated and accumulated in the space while the adhesives are heated leaves away from the opening and the at least one rough part. According to the invention, the gas generated bythe adhesives is prevented from being accumulated in the bracket and the bracket is floated or inclined; the dust is prevented from falling into the interior of the bracket; no influence is generatedon the mold design of the original bracket; no mold cost of the bracket is increased; and the easy separation between the bracket and the circuit board while the bracket and the circuit are collided or seriously shaken is avoided.

The invention discloses an all-in-one machine for gas purification. The all-in-one machine for gas purification comprises a gas inlet unit, a power unit and a gas exhaust unit, wherein the power unitis connected with the gas inlet unit and the gas exhaust unit, so that the all-in-one machine for gas purification is in a cylinder shape as a whole. The all-in-one machine for gas purification provided by the invention has the effects of small volume, light weight, high efficiency, high air volume, simplicity and convenience in installing and disassembling, and noise reduction. In addition, the inverted T-shaped limitation of 'a vertical stand column and a horizontal air gathering cover' of a traditional kitchen ventilator is further relieved.

The invention provides a modularized bus capacitor integrated with a filter and a discharge resistor. The modularized bus capacitor comprises a shell, a bus capacitor core, a positive pole direct current busbar, a negative pole direct current busbar, a Y capacitor, a magnetic ring and a discharge resistor module, the Y capacitor comprises a positive electrode Y capacitor and a negative electrode Y capacitor; the shell is of a square cylindrical structure; two symmetrical mounting grooves are formed in the front side of the shell; the pole Y capacitor and the negative pole Y capacitor are accommodated in the mounting grooves in a matched manner and are fixed; the rear side of the shell is provided with a first connecting column used for fixing the positive pole direct current busbar and the negative pole direct current busbar. The Y capacitor, the discharge resistor module, the magnetic ring and the bus capacitor are integrated, so that the occupied space is reduced, and the space utilization rate is improved; an interference current conduction path is shortened, and the electromagnetic compatibility is improved; and the Y capacitor, the discharge resistor module and the magnetic ring are integrated outside the bus capacitor, so that heat dissipation is facilitated, adverse effects on heat dissipation of a bus capacitor core are avoided, and the heat dissipation performance of the module is improved.

The invention discloses a feeding cold rolled tube slewing device. The feeding cold rolled tube slewing device includes a trolley, a fixing unit, a basic unit, and a dragging structure; an output endof the basic unit is arranged on the dragging structure; a fixing rack is arranged on a trolley body; the dragging structure is arranged on the fixing unit; and an input end of the basic unit is drivingly connected to an output end of the power mechanism. The feeding cold rolled tube slewing device is reasonable in design, is simple in structure, is energy-saving and environment-friendly, is easyto produce, is low in cost, is easy to install and use, will not affect design, facilitates standardization and industrial production.

The invention discloses a digital self-calibration circuit of a successive approximation analog-to-digital converter. During analog-to-digital conversion, when carrying out kth bit analog-to-digital conversion, one control code is selected from two selectable control codes according to former bit data at first, and the selected control code is used for controlling a calibration capacitor array and calculating the kth bit data; and before outputting the kth bit data, when carrying out the kth bit analog-to-digital conversion, a logic circuit is controlled to calculate the two selectable control codes corresponding to the (k-1) th bit. The invention further discloses a digital self-calibration method of a successive approximation analog-to-digital converter. The digital self-calibration circuit and method disclosed by the invention can be used for improving the conversion efficiency and the conversion precision, reducing the number of adders and saving the circuit area.

The invention provides a U-shaped pipe underground fluid multilayer sampling device. The U-shaped pipe underground fluid multilayer sampling device comprises a ground auxiliary system, a supporting system, a gas getting unit, water getting units and interlayer packers. The gas getting unit, the water getting units and the packers are arranged on a supporting connection rod of the supporting system. The gas getting unit is arranged in an aeration zone above a water table, the water getting units are arranged below the water table, the packers are mixed with the gas getting unit and the water getting units, waterpower incontinuity of upper parts and lower parts of sampling units in sampling layers of different aquifers or the same aquifer is achieved, and underwater of the different aquifers is sealed and cannot be mutually disturbed by drilled channels. The U-shaped pipe underground fluid multilayer sampling device is simple and novel in structural design and free of starting pressure, the service life of equipment is prolonged, the sample introduction speed is increased, the cost is reduced, and the application range is wider.

The invention relates to a satellite-borne compact coaxial T switch assembly. Thesatellite-borne compact coaxial T switch assembly is used in a satellite effective load switch network, can be independently used as a component to back up a key single machine according to user requirements to improve the reliability of a whole satellite, and can also be combined with other switch assemblies to form a more complex switch network to realize a more complex connection state. The size and the weight of the assembly can be effectively reduced by adopting a common bottom plate structural form, six switch shells are mounted on the same bottom plate, and various switch remote control and telemetering instruction terminals are connected to a low-frequency connector through leads, so that remote control and telemetering acquisition can be conveniently carried out on the switch; and the low-frequency connector further integrates switch control and telemetering signals. The structure of the switch assembly can be extended into five-in-one, four-in-one, three-in-one, two-in-one assemblies and other forms, the size and weight of the switch assembly can be effectively reduced, the function of the switch is not affected, and the integration of the product is improved to a great extent.

The invention relates to an electrothermal-driven in-plane bistable radio frequency microswitch belonging to the technical field of micro electromechanics. The electrothermal-driven in-plane bistable radio frequency microswitch comprises an electrothermal-driven mechanism, a mechanical locking mechanism and a signal conversion mechanism, wherein the electrothermal-driven mechanism is positioned under the mechanical locking mechanism; and the mechanical locking mechanism is connected with the signal conversion mechanism. The invention can realize the mechanical locking by using a pair of locking contacts, does not require continuous power consumption when keeping in a stable state, also fully develops the advantages of large driving force, high displacement power density and convenient integrated manufacture of an electrothermal driver and can be used as the actuation form of the mechanical locking structure of the switch. The switch has simple structure, foreseeable radio frequency (RF) characteristic, possibility of batch manufacture and practical application and suitability for integral manufacture.

A device and method for precise positioning of a passive RFID tag, belonging to the technical field of RFID chip design, including: a passive RFID tag and an external LED light; the passive RFID tag includes a radio frequency module, a control module, a memory, and an LED driver unit; the radio frequency module is used for wireless radio frequency communication with the reader; the control module is used to analyze the LED control instruction with screening parameters sent by the reader and respond; the memory module is used to save the corresponding The identification information of the item; the LED drive unit is used to drive the LED light on or off according to the response. The invention has flexible design and simple logic control, avoids the problem that the wireless positioning is easily interfered by the environment, and simultaneously reduces hardware expenses such as extra time and area.

The invention discloses a method and a system of digital television data transmission. The method comprises the following steps: (1) classifying data information in digital television service function, wherein an application program interface layer of each classification is provided with a corresponding interface, and a user sends a request to a corresponding interface according to the classification of request information of the user; (2) a local view call hierarchy receiving the request from the application program interface layer, acquiring data from a matching layer after analysis, packaging the data from the matching layer, and sending the data to the application program interface layer; (3) the application program interface layer feeding the data to the user. Thus, conveying work of a whole data flow is completed. According to the method of the digital television data transmission, layered structure designs are respectively adopted for the application program interface layer and the local view call hierarchy, clear interfaces are defined between layers, and therefore code coupling degree is reduced, code maintenance difficulty is reduced, and asynchronous data transmission is effectively realized.

The invention discloses a communication signal device capable of being rapidly maintained. The communication signal device comprises a body, a mounting shell, a connecting seat and a base, and the body is made of a hard material; the mounting shell is mounted on the outer surface of the body, and the mounting shell is movably connected with the body; the connecting seat is designed to be of a U-shaped structure; and the base is mounted below the connecting seat. According to the communication signal device capable of being rapidly maintained, a bolt mounting mode is eliminated in the use process, the device can be rapidly disassembled, the device can be conveniently maintained, in the use process, the body can be disassembled from the connecting seat to be independently used, the body can be connected with the connecting seat, so that the body is mounted at a proper position, a dust cover is mounted in the body, the dust cover is put down when the dust cover is not used, and dust can be effectively prevented from entering the body from air holes, so that the influence on the use of the interior of the body is avoided.

The invention relates to a weighing device of a net weight type packaging machine, and belongs to the technical field of packaging and weighing. The weighing device comprises a weighing box body, inwards-concave sensor mounting compartments of cuboid structures are arranged on the two sides of the top face of the weighing box body, sealing covers are movably connected to the tops of the sensor mounting compartments, a weighing sensor is mounted in each sensor mounting compartment, a force transmission beam is horizontally arranged at the top of each weighing sensor, and the two ends of the force transmission beam are connected with the top ends of force transmission pull rods with the adjustable length. A weighing hopper is further hoisted in the weighing box body in a suspended manner, the two sides of the weighing hopper are connected with the bottoms of the force transmission pull rods correspondingly, and a self-locking angle valve mechanism is further arranged at the bottom of theweighing hopper.