81results about How to "Ambient temperature has little effect" patented technology

The invention discloses a manufacturing method of an MEMS chip insensitive to packaging stress. The manufacturing method comprises the steps of firstly, taking an SOI wafer, forming a lower electrode by use of top-layer Si and etching the top-layer Si to form lower electrode patterns, secondly, taking a single crystal Si wafer and performing photoetching and Si etching to form a substrate wafer, thirdly, aligning the SOI wafer to the substrate wafer, performing silicon-silicon dioxide bonding and annealing to form a bonded wafer, and grinding the bottom-layer Si of the SOI wafer in the bonded wafer to form an MEMS activity structure layer, fourthly, depositing a metal layer on the MEMS activity structure layer to form a metal pad, fifthly, etching the MEMS activity structure layer and releasing the MEMS activity structure layer, sixthly, taking a single-crystal Si wafer, and performing photoetching and Si etching to form a cover plate wafer, seventhly, aligning and bonding the cover plate wafer to the bonded wafer and annealing to form a sealed wafer, and finally cutting the cover plate wafer and the sealed wafer to obtain the MEMS chip. The manufacturing method is short in process and high in rate of finished products; the manufactured MEMS chip is insensitive to the packaging stress.

The invention relates to a sensor of a micro-electromechanical system (MEMS), in particular to a high-gravity (g) acceleration sensor in a plane of the MEMS based on a resonance tunnelling structure (RTS), which solves the problems that the structure of the conventional MEMS high-g acceleration sensor cannot realize horizontal acceleration measurement and a detection result is easy to influence by a temperature. The high-g acceleration sensor in the plane of the MEMS based on the RTS comprises a silicon-based frame and a quality block, wherein two sides of the quality block are fixed with the silicon-based frame respectively by an independent supporting beam and two combination beams; the independent supporting beam is arranged along a central line of the quality block; the two combination beams are symmetrical about the central line of the quality block which is taken as a symmetry axis; each combination beam comprises a detection beam and two connection beams; a strain pressure sensitive element is arranged on the detection beam; the thickness and width of the detection beam are smaller than those of the connection beams; and the independent supporting beam, the quality block and the connection beams in the combination beams are equal in thickness. The acceleration sensor can realize the horizontal acceleration measurement and is reasonable and simple in structure, simple in process, and less influenced by an environmental temperature, works normally in a high-temperature environment, realizes three-axis integration easily and is applied to measurement of an impaction acceleration with a high-g value.

The invention provides a heat radiation control method of a modularization data center. According to the method, a temperature sensor is utilized to sense internal temperature of a plurality of servers and temperature of central processing units in a plurality of the servers, if temperature of any central processing unit is abnormal, flow of first cooling fluid is adjusted, if any internal temperature is abnormal, a rotating speed of a heat radiation fan group is adjusted, and if the rotating speed of the heat radiation fan group reaches an upper limit, flow of second cooling fluid is adjusted. Through a heat radiation mode of the present invention, machine board heat radiation of a data center can be modularized, cooling fluid flow is controlled through a cooling fluid solenoid valve system, and the heat radiation mode has convenience in integral control.

The invention discloses an infrared temperature measurement compensation method based on binocular camera ranging. The infrared temperature measurement compensation method comprises the steps of collecting human body image information by adopting a binocular camera, calculating the distance between the aperture center of the binocular camera and a human body, and compensating the temperature of aninfrared sensor. A binocular camera detection mode is adopted, the parallax of two images is calculated to obtain the distance between the human body and the sensor, an infrared temperature measurement software compensation algorithm is adopted to finally calculate the human body surface measurement temperature, the influence of the environment temperature on the measurement temperature is small,the precision is high, the performance is stable, and the deployment is more convenient.

The invention relates to the fields of metallurgy and chemical engineering, particularly a gold extraction method by heap leaching. The method comprises the following steps: laying an base wad on a heap leaching site, wherein the base wad comprises a base layer, an impermeable layer and a protective layer from bottom to top, and a collector is arranged on the impermeable layer and under the protective layer; crushing raw ores, and heaping on the base wad to obtain an ore heap; burying a spray pipe into the ore heap, introducing a spray liquid into the spray pipe to spray the ore heap, and collecting by the collector to obtain a gold-containing rare solution, wherein the spray liquid is a sodium cyanide solution; and recovering the gold from the gold-containing rare solution. By adopting the buried-pipe spray process, the spray pipe is buried in the ore heap, so that the evaporation amount of the spray liquid in the spray pipe is small, and the water-saving benefit is obvious; and the method provided by the invention is slightly influenced by the ambient temperature, thereby ensuring continuous production in cold and arid regions.

A low-voltage draw-out switch cabinet propel interlocking mechanism is characterized in that a transmission screw and a roller bearing positioning part are metal parts; the roller bearing positioningpart comprises a fixed base and at least two vertically arranged rollers, wherein the rollers are arranged in a forward and backward interval along the axial direction of the transmission screw, the lower end of the roller is rotatably mounted on the fixed base through a bearing, and the upper end can extend into the spiral groove of the transmission screw and be drivingly matched with the transmission screw. The mechanism has the advantages that the positioning parts of the transmission screw and the roller bearing are all made of ferrous material, so that the positioning parts are less influenced by the ambient temperature, the structure is more stable, and the fracture fault is effectively avoided. Moreover, the roller bearing positioning part is simple in structure and convenient to assemble. When the roller is matched with the screw spiral groove of the transmission screw, the roller itself will rotate, which not only makes the operation easier, but also ensures that the roller bearing positioning part will not be stuck.

The invention relates to the technical field of cable monitoring, in particular to a device for monitoring a cable head fault online and monitoring method thereof. The device comprises an optical fiber temperature measurement probe, an instrument, an optical fiber patch cord, a sheath and a high-temperature strapping tape, wherein he optical fiber temperature measurement probe is fixed on the surface of a cable head corresponding to a hot spot through using a high-temperature adhesive tape, the optical fiber temperature measurement probe is connected with an instrument through the optical fiber patch cord, and the sheath wraps the outer sides of the optical fiber temperature measurement probe and the cable and is fastened and fixed by the high-temperature strapping tape.

The invention relates to the field of outdoor facility construction of electric power and telecommunications industries. The invention provides an energy-saving installation method of an outdoor cabinet, which buries the storage batteries of the outdoor cabinet in the ground after the storage batteries are partially processed, so that the energy-saving requirements of the outdoor cabinet can be effectively met, and the anti-theft grade of the storage battery is improved.

The invention provides a color pavement material. The color pavement material comprises a cementing material and an aggregate, the ratio of the cementing material to the aggregate is 5-20/100, wherein the aggregate is color cavity gap ceramic particles, and a phase transition material is absorbed in the cavity gap of the color cavity gap ceramic particles. According to the invention, a pore forming agent is added during the preparation process of the multi-cavity ceramic particles, general color cavity gap rate can reach 80%, and volume ratio of the effective adsorption phase transition material can reach 40%. The phase transition material is absorbed in the cavity gap of the multi-cavity gap ceramic particles, a phase transition process is carried out in the cavity gap of the multi-cavity gap ceramic particles, the cementing material and the phase transition material are tightly combined, stress concentration phenomenon is not generated due to minimal defect in the cementing material, internal stress generation can be avoided, and color effect of the color aggregate can be fully embodied.

The invention relates to a deicing wind power blade heating system detection device and method. After the deicing wind power blade heating system is started to be in a working state, an unmanned aerial vehicle visible light imager and an infrared thermal imager are controlled to synchronously shoot a visible light image and an infrared thermogram of one same area of a wind power blade; an area corresponding to the shot image on a wind power blade heating element position distribution diagram is determined by utilizing the visible light image, the infrared thermogram is superposed with the area, the positions of heating elements are calibrated on the infrared thermogram, temperature data corresponding to the positions of the heating elements are compared, and when the percentage that the temperature of the positions of parts of heating elements is lower than the corresponding temperature of the other heating elements exceeds a set threshold value, it is judged that the parts of heatingelements fail. The method is less influenced by the environment temperature, and the detection result is more accurate. The deicing wind power blade heating system can be remotely detected, manpower is saved, efficiency is improved, and safety is higher.

The invention discloses plastic plate molding equipment. The equipment comprises a first plastic extruding machine, a second plastic extruding machine, a third plastic extruding machine, first guide rollers, an upper-layer nonwoven fabric layer unwinding equipment first unwinding device, a lower-layer nonwoven fabric layer unwinding equipment second unwinding device, second guide rollers and traction devices which are arranged sequentially, wherein the first plastic extruding machine is used for extruding a middle-layer heat-insulation plate; the second plastic extruding machine is used for extruding an upper plastic sheet layer; the third plastic extruding machine is used for extruding a lower plastic sheet layer; a setting mold is fixedly connected onto a first setting device; a heat-insulation plate machine head is mounted on the first plastic extruding machine, an extruded heat-insulation plate blank is cooled and set by the setting mold of the first setting device, and a continuous heat-insulation plate is formed; the middle-layer heat-insulation plate, the modified plastic sheet layer on the upper side, the modified plastic sheet layer on the lower side and grid fabric or nonwoven fabric are bonded together in a hot-melt manner respectively; the heat-insulation plate is made of polystyrene (PS), polyvinyl chloride (PVC), polyurethane (PU), polypropylene (PP), polyethylene (PE) and ethylene-vinyl acetate (EVA); and the plastic sheet layers are made of PVC, PP, PE and PU. The grid fabric or the nonwoven fabric or a polymer adhesive layer has the good bonding property to a wall and does not fall off easily, and the service life is long.

A waste heat power generation type screw machine set is characterized by comprising a refrigerating circulating system and a double-screw expansion machine system. A power output shaft of the double-screw expansion machine system is connected with a power generation system, and a condensing coil of the refrigerating circulating system is placed in a generator of the double-screw expansion machine system. The waste heat power generation type screw machine set is reasonable in design and capable of effectively utilizing low grade heat energy emitted by buildings. The double-screw expansion machine system is used for achieving power generation utilization of waste heat energy resources, the energy consumption of the refrigerating circulating system can be reduced, the waste heat resources emitted to an external environment can be reduced, the temperature of an outdoor environment and the using cost of the refrigerating circulating system can be lowered, and emission of carbon dioxide can be reduced.

The invention discloses a wearable contact type dynamic intelligent body temperature monitoring device which comprises wearable monitoring equipment, and the wearable monitoring equipment comprises a double-temperature digital sensor, a PPG heart rate monitoring sensor, a communication unit, a display unit and a system micro-processing controller. The dual-temperature digital sensor, the PPG heart rate monitoring sensor, the communication unit and the display unit are respectively connected with the system micro-processing controller, the wearable monitoring equipment further comprises a shell (1), a circuit board is arranged in the shell (1), and the system micro-processing controller is arranged on the circuit board (6). The system can dynamically and continuously monitor the daily body temperature and the basal body temperature, and has the advantages of high monitoring accuracy and small influence of environment temperature.

The invention provides a bionic cilium microsensor based on bistable potential energy adjustment and a preparation method of the bionic cilium microsensor. The overall structure of the sensor is a multi-layer structure composed of cilia, an upper structure layer, a middle connecting layer and a lower supporting layer, wherein the upper structure layer comprises a suspension comb tooth fixing end,a folding beam, suspension comb teeth, detection comb teeth and modulation comb teeth. According to the invention, cilium columns and the upper structure layer are prepared on silicon on an insulatingsubstrate, and movement gaps are provided for the folding beam and the suspension comb teeth by etching the middle connecting layer. When the sensor works, the cilium columns drive the suspension comb teeth below to move in the flow velocity/shear stress direction, so that the gaps between the suspension comb teeth and the detection comb teeth are changed, and the flow velocity/shear stress is obtained according to the change of capacitance; when the flow velocity/shear stress is weak, the measurable displacement is obtained by applying a modulation voltage to the modulation comb teeth, enabling the potential energy of the system to be in a bistable state and adding a proper amount of white noise, namely, the capacitance change between the static comb teeth and the movable comb teeth canbe detected, and finally, the detection of a lower threshold value is realized.