31results 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 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 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 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 manufacturing method of a hang tag with an RFID tag. The hang tag is used for being matched with a product. The hang tag comprises a first hang tag part and a second hang tag part attached to the first hang tag part. The first surfaces of the first hang tag part and the second hang tag part are used for bearing first information for describing the product. The second surfaces of the first hang tag part and the second hang tag part are used for mutual attachment. The manufacturing method includes the steps that the first hang tag part and the second hang tag part are formed; the RFID tag is jointed to the second surface of the first hang tag part or the second surface of the second hang tag part; the second surfaces of the first hang tag part and the second hang tag part are attached; second information for describing the product is written in the RFID tag. The step of arranging the RFID tag is integrated into the manufacturing process of the hang tag, by means of the mode that the two hang tag parts clamp the RFID tag and the two hang tag parts are attached to form the hang tag, the design of the hang tag is not affected, and the produced hang tag still has the sense of beauty meeting the design idea.

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.

The invention discloses an accurate positioning device and method for a passive RFID tag, and belongs to the technical field of RFID chip design. The accurate positioning device comprises the passive RFID tag and an external LED lamp; the passive RFID tag comprises a radio frequency module, a control module, a memory and an LED driving unit. The radio frequency module is used for wireless radio frequency communication with a reader-writer; the control module is used for analyzing an LED control instruction with screening parameters sent by the reader-writer and making a response; the memory module is used for storing identification information of a corresponding article; and the LED driving unit is used for driving the LED lamp to be turned on or turned off according to the response. The method is flexible in design and simple in logic control, the problem that wireless positioning is prone to environmental interference is avoided, and meanwhile extra time, area and other hardware expenses are reduced.