125results about How to "Change range" patented technology

The invention relates to a capacitive micro-acceleration sensor with a symmetrically combined elastic beam structure and a production method thereof. The acceleration sensor comprises a symmetric center mass block, an external support frame, eight symmetric straight beams, two symmetric frame beams, a combined elastic beam structure, an upper cover plate and a lower cover plate, wherein the eight symmetric straight beams are used for connecting the center mass block with the external support frame, and the combined elastic beam structure is formed by connecting eight symmetric L-shaped beams together; and the other end of each straight elastic beam connected with the frame beams is connected to the middle or a vertex angle at the top end and the bottom end of the lateral face of the center mass block, and the other end of each L-shaped beam connected with the frame beams is connected to the inner side face of the external support frame. The acceleration sensor adopts the combined elastic beam structure which is formed by connecting the symmetric straight beams, the frame beams and the L-shaped beams together, has high symmetry and can remarkably reduce the cross-sensitivity of the sensor; and the sensor is produced by adopting a microelectronic mechanical system technology and is the capacitive micro-acceleration sensor with high sensitivity.

The invention provides a sequential control signal generation method of a cold ion quantum information processor. Radio frequency signal and digital signal parameters are set through a principal computer command on a principal computer; the principal computer command is converted into a machine command which is transmitted to a sequential control FPGA; the sequential control FPGA executes the machine command and digital signals and radio frequency signals are output through a conversion module and a radio frequency synthesis module. The invention also provides a sequential control signal generation device of a cold ion quantum information processor. The device comprises a principal computer, a sequential control module, a radio frequency synthesis module and a conversion module. According to the invention, sequential control signals for experiments are described intuitively; programmed principal computer commands can be used repeatedly, so that repeated work is prevented and improvement can be made according to experiment results conveniently; the parameters such as the frequency, the phase and the amplitude of radio frequency signals can be changed conveniently; multiple paths of control signals can be controlled accurately to work cooperatively; the extendibility is great.

The invention relates to a water jet driving spray-head with an elevation angle automatic-adjustment function, belonging to key equipment for a water- saving irrigation and sprinkling irrigation system and being suitable for solving the problem that the jet range automatically changes when the spray-head rotates. The water jet driving spray-head comprises a mounting riser, a guide rail disc, a spray-head rotator, a spray-head elbow, an elevation angle adjusting mechanism, a spray pipe, a jet element body and a guide rod, wherein a rail is arranged at the periphery of the guide rail disc, and the guide rail is set according to the change rule of the jet range; the elevation angle adjusting mechanism consists of an internal spherical surface joint, an outer sleeve, an internal spherical surface joint and a rubber ring; and when the spray head works, the spray pipe rotates to drive the guide rod to rotate together, the guide rod extends into one end of the guide rail and travels along the guide rail, the guide rail moves up and down due to periodic vertical change of the guide rail, the spray pipe moves up and down while horizontally rotating so as to drive the internal spherical surface joint to rotate along the radian of the spherical surface in an up-down angle range, and therefore the elevation angle of the spray-head can be automatically adjusted.

The invention relates to a microinertia sensor of a variable pitch capacitor and a preparation method thereof. The prior product limits the increase in the mass of the sensor vibration generator and the decrease in the polar plate pitch. A sensor mass block is a rectangular silicon chip etched with fence-shaped strips, the two corresponding ends are connected with anchor points by a silicon supporting beam, and the other two corresponding ends are respectively provided with silicon strips with the same quantity and corresponding positions. Driver mass blocks are arranged at the two sides of the sensor mass block, an annular groove is etched in the middle, the two sides are provided with movable driving silicon strips and comb detection silicon strips, and the silicon strips connected with the sensor mass block and the corresponding detection silicon strips form a detection capacitor. The comb strips of the fixed driving silicon strips and the movable driving silicon strips from a driving capacitor. The sensor mass block corresponding to the bottom surface of the glass underlay is provided with interdigital aluminum electrodes, and each fence-shaped strip of the sensor mass block corresponds to each pair of interdigitals in the interdigital aluminum electrodes. The invention has simple technique, and contributes to lowering cost and improving rate of finished products.

The invention provides a resonant mode fiber Fabry sensor with good optical performance and adjustable measuring range, comprising fiber and protective fiber, wherein a fiber Fabry resonant membrane is in contact joint between the fiber and the protective fiber; the end face of the fiber Fabry resonant membrane is plated with a photo-thermal membrane; the end face of the protective fiber is provided with a microflute which is arranged on the contact-joint surface of the fiber Fabry resonant membrane; the end face of the fiber or the fiber Fabry resonant membrane is provided with a groove which forms a Fabry cavity, and the optical reflecting surface of the Fabry cavity is a plane. The resonant mode fiber Fabry sensor changes the measuring range by changing the thickness or shape of the fiber Fabry resonant membrane, and the length or weight of the center of the hardness quantity. The optical reflecting surface is a plane; therefore, the sensor has good optical performance. The sensor can be used as a temperature sensor, a pressure sensor, a strain sensor, a magnetic field sensor, a vibration sensor, and the like.

The invention relates to a spraying head with a wind resisting function and belongs to the technical field of agricultural water saving. The spraying head with the wind resisting function comprises aflow adjusting device, a steering device, an extensible and retractable pipe, a spraying pipe, a spray head and a wind speed and wind direction measuring device. According to the spraying head with the wind resisting function, the flow size and the steering direction of the spray head can be controlled according to the different wind speeds and wind directions, and so that the change of ejecting range is achieved; when wind is following wind, the flow can be adjusted to be reduced, meanwhile, the spray head is adjusted to rotate toward a windward side; and when wind is dead wind, the flow is adjusted to be increased, meanwhile, the spray head is adjusted to rotate toward a windward side, the spraying range of the spray head is not changed, and the wind resisting requirement is met. The spraying head with the wind resisting function is easy to operate, time and labor are saved, and the spraying head has the beneficial effects that integral selectivity is achieved, the cost is saved, andthe efficiency and the spraying uniformity are high. The spraying head with the wind resisting function achieves spraying automation, a motor is adjusted according to needs to adjust different waterinlet flows and nozzle angles, man-made operation is reduced, and the opening diameter adjusting precision is improved.

The invention discloses a wide-range fiber bragg grating displacement sensor and a measuring method. The wide-range fiber bragg grating displacement sensor comprises a sensor body and a steel wire rope fixing structure. The sensor body comprises a sensor outer shell, an optical fiber, a strain beam, a first fiber bragg grating, a second fiber bragg grating, a precise screw, a first support, a reel, a steel wire rope, a spring box, a second support and a volute spiral spring, wherein the optical fiber, the strain beam, the first fiber bragg grating, the second fiber bragg grating, the precise screw, the first support, the reel, the steel wire rope, the spring box, the second support and the volute spiral spring are arranged inside the outer shell. The first support and the second support are fixed on the sensor outer shell. The outer side of the first support is fixedly provided with the strain beam. The upper side and the lower side of the strain beam are bonded with the first fiber bragg grating and the second fiber bragg grating respectively. The precise screw doing reciprocating movement through thread transmission is fixed between the first support and the second support. The reel is fixed on the precise screw. The wide-range fiber bragg grating displacement sensor has the advantages that the sensitivity of the sensor can be adjusted by changing the screw pitch P of the precise screw, the range can be adjusted by changing the diameter of the reel, and long-distance measuring can be carried out compared with an ordinary optical fiber sensor.

The invention aims to provide a small track robot based on a connecting rod mechanism. The small track robot comprises a car body, two groups of travelling mechanisms, two groups of connecting mechanisms, a driving motor and a connecting rod motor, wherein the two groups of travelling mechanisms and the two groups of connecting mechanisms are symmetrically arranged at two sides of the car body, the connecting rod motor comprises a first connecting rod motor and a second connecting rod motor, and the driving motor, the first connecting rod motor and the second connecting rod motor are all arranged on the car body. According to the invention, the connecting rod mechanism is introduced into a robot configuration design, a rigid positioning state and positioning precision of a track connecting frame are improved, motor load can be reduced by the connecting rod mechanism, a necessary condition is provided for further reducing the size of the robot, connecting rods are provided with multiple holes, the length of fit of the connecting rods can be adjusted according to the specific topography, the configuration posture and the variation range of the rod group are changed, and 21 robot configuration change states of the robot can be realized. The small track robot has very good topography adaptability.

The invention discloses a microphone testing device, system and testing method, mainly solving problems that the current microphone testing device is high in cost, low in testing efficiency and poor in versatility. The microphone testing device comprises at least one microphone interface, a signal conversion module, a power supply module and a control module; the signal conversion module, the power supply module and the control module are integrated; the power supply module is controlled by the control module to configure voltage matched with the microphone to be tested; a signal generated by the microphone to be tested is converted to a digital signal through the signal conversion module, wherein the digital signal can be recognized by the control module. The microphone testing device, system and testing method reduces dependence on the external device and connection difficulty, realizes digital signal processing through a control module, eliminates the DSP chip and has a low cost. Besides, the microphone testing device, system and testing method can regulate a testing mode at any time, have high testing efficiency and are applicable to various types of microphone testing.

The invention relates to a dual-way micro-inertia sensor with complete symmetrical structure and ultra-high resolution, comprising a glass base, a fixed electrode with fixed gate shaped strip on the glass base, four silicon anchor points fixed on the glass base, and a dual-way micro-inertia sensor with complete symmetrical structure and ultra-high resolution composed of silicon mass blocks hung above the glass base. The silicon mass block is composed of eight gate shaped strips in X direction, eight gate shaped strips in Y direction, small rectangle mass blocks connected with each gate shaped module, a damping comb used to control the damping, four U shaped breast beams with anchor point connected with the mass block and a connecting beam of the mass block and the breast beam. The invention has the advantages that the performances in X-Y directions are completely consistent, the voltage of the testing signal is enlarged, and the sensitivity and resolution are improved, the air damping appears a slide-film damping during the detection of the differential movement between the polar plates of the capacitor, so that the Brown noise caused by the air damping is reduced.

The invention relates to a fiber grating pressure sensor free from temperature influence. The fiber grating pressure sensor is characterized in that a fiber grating is encapsulated in a tubular shell of which one end is open; one end of the fiber grating runs through a pore in the center of the unopened end face of the tubular shell, and a monomode fiber is connected with a fiber coupler; two sides of the fiber coupler are provided with four ports together; another port of one side connected with the fiber coupler is connected with and runs through the monomode fiber and is positioned in a fiber refractive index matching fluid; in two port of the other side of the fiber coupler, one port is connected with a broadband light source through the monomode fiber, and the other port is connected with a demodulation system through the monomode fiber; and the encapsulation of the fiber grating adopts the filling of a polymer to the tubular shell. The fiber grating pressure sensor only utilizes one fiber grating as a pressure sensitive element, can avoid the accurate sensing influence of the change of ambient temperature on a pressure signal, can change the stretching amount of reflection spectrum bandwidth of the fiber grating through the change of elasticity modulus of the polymer, and further changes the measuring precision and measuring range of the sensor.

The invention provides a large capacitance micro inertial sensor based on slide-film damping and a manufacturing method thereof. The existing sensors have big noise, poor stability and small range and bandwidth. Silicon strip groups are symmetrically arranged at the two sides of a sensor mass block in the sensor. Sensor anchor points are arranged at the two ends of the sensor mass block. Gate electrodes are arranged in the sensor mass block. Driver mass blocks are arranged corresponding to the silicon strip groups. Fixed counter electrodes are arranged on a first substrate below the sensor mass block. The manufacturing method is characterized by firstly forming the fixed counter electrodes on the first substrate, secondly forming an electric insulation layer on the upper surface of a second substrate and forming a floating zone on the lower surface of the second substrate, thirdly bonding the two substrates and finally etching the second substrate to form the sensor. The micro inertial sensor has novel structure, high resolution and sensitivity and simple manufacturing process and is beneficial to lowering the cost and improving the yield.

The invention provides a micro inertial sensor with transversely movable electrodes embedded and a manufacturing method thereof. The existing sensors have big noise, poor stability and small range and bandwidth. Sensor mass blocks capable of transverse moving are symmetrically arranged at the two sides of a sensor gate mass block in the sensor. Sensor anchor points are arranged at the two ends of the sensor gate mass block. Gate electrodes are arranged in the sensor mass blocks. Silicon strip groups are arranged at one side of each sensor mass block capable of transverse moving and are arranged corresponding to solid mass blocks. The manufacturing method is characterized by firstly forming fixed counter electrodes on a first substrate, secondly forming an electric insulation layer on the upper surface of a second substrate and forming a floating zone on the lower surface of the second substrate, thirdly bonding the two substrates and finally etching the second substrate to form the sensor. The micro inertial sensor has novel structure, high resolution and sensitivity and simple manufacturing process and is beneficial to lowering the cost and improving the yield.

The invention relates to an environment responsive copolymer brush and a corresponding preparation method, wherein the copolymer is prepared by acid, alkali monomers and polyoxyethylene macromolecule monomer via traditional free radical copolymerization, the macromolecule monomer is polyoxyethylene with single terminated olefin, which is synthesized from polyoxyethylene with single terminated functional group and acroleic acid acyl chloride, with high conversion rate. The copolymer brush has simple synthesis, and available rich raw material resource which water solution has response character on temperature and pH value. Via adjusting the ratios of acid, alkali monomers and polyoxyethylene macromolecule monomer, the low critical dissolution temperature and pH value response range of the copolymer water solution can be changed. The invention can be used to separate drug carrier and metal particles and modify material surface or the like.

The invention relates to a solenoid drive micro inertial sensor embedded with movable comb teeth and grid-shaped electrode, and a manufacturing method thereof. The invention comprises a glass substrate, a movable sensor mass block and four fixed mass blocks, wherein, the movable sensor mass block is provided symmetrically with three pairs of through grooves from the edge to the center thereof, the three pairs of through grooves can divide the movable sensor mass block into two fixed parts and two movable parts in the middle, wherein, silicon sheets are arranged symmetrically at the two sides of the movable parts, comb-testing silicon sheets and the three movable silicon sheets are arranged in an intersect manner. A metal driving lead is arranged between a U-shaped groove of the movable part of the movable sensor mass block and grid sheets, the surface of the glass substrate is provided with an interdigital aluminium electrode corresponding to the movable sensor mass block. The invention has simple manufacture craft and is conducive to lowering cost and improving yield.

The present invention discloses a torque sensor based on a capacitor edge effect. The sensor comprises a sensor outer ring, a trapezoid beam, a sensor inner ring, a moving electrode of an induction capacitor, a static electrode of an induction capacitor and a substrate. The static electrode of the induction capacitor is connected with the substrate and perpendicular to the moving electrode of the induction capacitor, is located at the outermost end of the moving electrode of the induction capacitor, and the static electrode of the induction capacitor is disposed along the axial direction of the sensor to be perpendicular to the substrate to form a capacitor based on the capacitor edge effect. The substrate is connected with the outer ring of the sensor, and relative position can be regulated to change an initial distance between the moving electrode of the induction capacitor and the static electrode of the induction capacitor to realize adjustability of the measuring range and the sensitivity of the sensor. According to the torque sensor based on the capacitor edge effect provided by the invention, the static electrode of the induction capacitor is vertically distributed at the maximum deformation of the moving electrode of the induction capacitor, the design has high sensitivity, high linearity and adjustable measuring range and the sensitivity so as to rapidly and accurately realize torque detection.

The invention relates to the technical field of radio frequency signal polarization characteristic control and regeneration, and discloses a method and device for generating multi-polarization radio frequency signals. The method includes the steps that input radio frequency signals are equally divided through a power divider, the amplitude and the phase attributes of signals of two polarization attribute radio frequency signal circuits correspondingly connected with the output end of the power divider are controlled, two paths of polarization attribute radio frequency signals are orthogonally synthesized on a double-ridge conical-horn antenna to radiate the radio frequency signals with multi-polarization attributes, and then the goal of rapidly controlling and adjusting the polarization attributes of the radio frequency signals is achieved. According to the device, the equal division output end of the power divider is connected with the double-ridge conical-horn antenna through the radio frequency signal circuits, wherein each radio frequency signal circuit is composed of a digital attenuator and a digital phase shifter. By the adoption of the method and device, the polarization attributes of the radio frequency signals can be rapidly changed in real time, or an upper computer sends control commands to rapidly change the polarization attributes of the radio frequency signals, and real-time control over the polarization attributes of the radio frequency signals is achieved. The device is simple in structure, and easy and convenient to control.

The invention discloses a variable flow sprayer nozzle capable of changing flows, ranges and spray irrigation strength without replacing a nozzle. The variable flow sprayer nozzle comprises a nozzle body; the nozzle body is provided with an upper shell and a lower shell; external threads positioned on the upper part of the lower shell are matched with a threaded hole positioned on the lower part of the upper shell; external threads positioned on the upper part of the upper shell are matched with a threaded hole of a sprayer; the center of an end plate of the upper shell is provided with a downward cone positioned in an upper port of an axial water spray orifice of the lower shell; the diameter of the cone is large on an upper part and small on a lower part; and the end plate positioned between the cone and the upper shell is provided with an axial hole communicated with a water discharge orifice inside the sprayer and the water spray orifice of the lower shell. The variable flow sprayer nozzle disclosed by the invention is used for irrigation.

This invention provides a fluidic angular velocity sensor and its process and belongs to micro electron mechanical system design and its process field. The sensor comprises two vibration chambers; four commute chambers and one detection chamber. The gas in the vibration chamber is driven and recycled and each vibration chamber two sides are located with two commute chambers and the driven gas flows into the detection chamber through the commute chamber and the recycled gas always moves along one direction in the detection chamber. The said detection chamber is symmetrically located with two pieces of heat sensitive resistance wires, which is connected with a Wheatstone bridge. The said commute chamber is needle teeth flow diode, which is composed of several orderly distributed needle teeth block bar.

The invention discloses a microphone assessment device and assessment method, mainly solving problems that the current microphone assessment device is high in cost, low in assessment efficiency, poor in versatility and heavy reliance on matching software and external equipment. The microphone assessment device integrates the signal conversion, a power supply module and a control module; the power supply is controlled to configure voltage matched with a microphone to be tested through the control module; the signal conversion module converts a signal generated by the microphone to be tested to a digital signal which can be recognized by the control module and performs digital signal processing and analysis on a digital signal to obtain assessment data of sensitivity, power consumption and a frequency response of the microphone to be tested. The microphone assessment device and assessment method do not need involvement of an external device to realize assessment on various indexes of the microphone, reduces reliance on the external device and connection difficulty. Besides, the assessment mode can be regulated at anytime through a control module, the assessment efficiency is high and the microphone assessment method is applicable to assessments of various types of microphones.

A shift lever device includes a shift lever having a pivot shaft formed at a base end of the shift lever integrally and a base having an opening formed to allow the shift lever to be inserted into the base and a pair of bearing parts formed so as to lie on opposing sides of the opening. The pivot shaft extends along a direction intersecting with a longitudinal direction of the shift lever. Each of the bearing parts has a bearing hole formed in the bearing part to adjoin the opening, a guide groove formed in the bearing part to communicate with the bearing hole, for introducing the pivot shaft into the bearing hole and a bearing bush which is to be inserted between the pivot shaft and the bearing hole. The bearing bush has a latch hook provided to engage with an interior of the bearing hole. The bearing bush is fitted to the bearing hole on condition that the pivot shaft is being inserting into the bearing hole through the guide groove, so that the shift lever is rotatably supported by the base through the bearing bush.

The invention discloses a robot bionic flexible electronic skin with controllable global rigidity. The system comprises a three-level sensing system. The first-level sensing is approaching sensing, is composed of a capacitive approaching flexible sensor array, and can sense the approaching distance, approaching speed and approaching direction of a man-machine. Secondary sensing is sensitive contact sensing, and a sensitive flexible tactile sensor with a bionic hair structure is adopted, so that contact force can be detected; the three-level sensing is load-sensitive tactile sensing, a flexible tactile sensor and a flexible driver which are integrated are adopted, the rigidity of the flexible electronic skin can be globally adjusted, the contact pressure can be detected, the measuring range and the sensitivity can be changed, and then dynamic load self-adaption is achieved. According to the invention, multi-source and multi-mode signals can be detected through a multi-stage sensing system.

The invention provides a single-particle-resistant transient pulse CMOS (complementary metal oxide semiconductor) circuit. The single-particle-resistant transient pulse CMOS circuit comprises a first buffer (101), a second buffer (102), a gating PMOS (P-channel metal oxide semiconductor) transistor (103), a gating NMOS (N-channel metal oxide semiconductor) transistor (104) and a phase inverter (105), wherein the first buffer is used for eliminating 'high-low-high' type pulses; the input end of the first buffer is connected with the input end of a single-particle-resistant transient pulse circuit; the output end of the first buffer is connected with a grid electrode of the gating PMOS transistor (103); the second buffer is used for eliminating 'low-high-low' type pulses; the input end of the second buffer is connected with the input end of the single-particle-resistant transient pulse circuit; and the output end of the second buffer is connected with a grid electrode of the gating NMOS transistor (104). A drain electrode of the gating PMOS transistor (103) is connected with a drain electrode of the gating NMOS transistor (104) and serves as the input end of the phase inverter (105); and the output end of the phase inverter (105) serves as the output end of the single-particle-resistant transient pulse circuit.