40results about How to "Sensitivity effects" patented technology

The invention relates to the technical field of micro mechanical electronics, in particular to a resonance micro accelerometer with high sensitivity, which solves the problem that the measuring sensitivity of traditional resonance accelerometers based on stress change is easy to be affected by interior residual stress and other factors. The accelerometer comprises a glass substrate, a mass block, two DETF resonators and a sensitive capacitor. The resonators are arranged in parallel / row and opposite to the side of the sensitive capacitor. The sensitive capacitor comprises a plurality of plate capacitors, polar plates at one side of which are fixed to the tuning forks by an articulated beam and polar plates at the other side of which are fixed by a supporting and connecting beam; the mass block is arranged between the two resonators, and a pair of symmetrical micro levers are arranged between the mass block and the two resonators respectively; the micro levers at the two sides of the mass block are symmetrical corresponding to the mass block, and one end of the micro level is fixed on the mass block and the other end on the supporting and connecting beam of the plate capacitor. The accelerometer of the invention has the advantages of reasonable structure, low volume, high sensitivity, good detecting effect and good development prospect.

The invention provides a structure for manually adjusting direction of a lamp head. The structure comprises the lamp head, a support hinged to the lamp head, a rotating disc and a fixed disc, the support is mounted on the rotating disc which is rotatably arranged on the fixed disc, a positioning component is arranged on the outer side of the rotating disc and comprises a supporting seat and inserting pins penetratingly arranged on the supporting seat, positioning holes used for arranging the inserting pins in an inserted manner are uniformly arranged on the circumference of the fixed disc, an arc-shaped guide hole is arranged in the support, and a fastening member is arranged at a position, opposite to the guide hole, on the lamp head, penetrates the guide hole and locks a butterfly-shaped nut. The structure is simple, stable and reliable, and horizontal lighting direction and pitching angle of the lamp head can be adjusted manually without the help of any tools. The invention further provides a lamp which comprises a base box. The lamp is provided with the structure, and the fixed disc is mounted on the base box. The horizontal lighting direction and the pitching angle of the lamp head of the lamp can be conveniently adjusted without the help of any tools.

The invention discloses a sensor, which comprises a first substrate and a vibrating diagraph supported above the first substrate through a first spacing portion. A detection structure comprises a first magnet, a second magnet and a magnetoresistive sensor arranged in a common magnetic field formed by the first and second magnets. At an initial position, the magnetoresistive sensor is at a positionwhere the magnetic field direction of the first magnet is opposite to the magnetic field direction of the second magnet. The magnetoresistive sensor is configured to sense a change of the common magnetic field of the first and second magnets and output a changing electric signal in a vibration process of the vibrating diaphragm. The sensor further comprises a driving device for regulating the relative positions of the magnetoresistive sensor and each of the first and second magnets. According to the sensor, the relative positions of the magnetoresistive sensor and each of the first and secondmagnets can be finely regulated through the driving device, so that the magnetoresistive sensor can be ensured to work in an appropriate magnetic field, and the influence of manufacturing and assembling errors on the sensitivity of the sensor is avoided.

The invention relates to an improved circuit breaker, comprising a casing, a circuit protection actuating mechanism, a traveling contact, a stationary contact, an arc extinguisher and a disengaging mechanism, wherein the circuit protection actuating mechanism is positioned in the casing; the traveling contact is matched with the stationary contact; the disengaging mechanism comprises a disengagingrotor and a drive component to drive the disengaging rotor to rotate, and the traveling contact is arranged on the disengaging rotor; a buckling mechanism is arranged on the disengaging rotor; the drive component cooperates with the buckling mechanism to control the buckling mechanism to buckle or disengage; and the circuit protection actuating mechanism cooperates with the buckling mechanism todrive the buckling mechanism to disengage. The design of the buckling mechanism in the invention separates the disengaging force from the contact pressure, and therefore, no matter how high the contact pressure is, the disengaging force can not increase all along, so that the pressure between the contacts can meet the requirements for the circuit breaker in a circuit environment with different current magnitudes; the disengaging force of the disengaging mechanism can not change, the sensitivity of the circuit breaker can not be affected, and the circuit breaker has a wider universality; and the whole circuit breaker has the advantages of convenient installation and simple structure.

The invention belongs to the technical field of nano-materials and particularly provides a three-dimensional hierarchical porous carbon film as well as a preparation method and application thereof. A three-dimensional hierarchical porous carbon film material is prepared by taking a silicon oxide nano-wire film as a hard template, a triblock copolymer as a soft template, phenolic resin as a carbon source and iron nitrate as a graphitization reagent through carrying out high-temperature calcination under the protection of inert gas to carbonize the phenolic resin, and etching the silicon oxide hard template through utilizing hydrofluoric acid. The carbon film has mesopores, so that the carbon film has an extremely large specific surface area and large pores are communicated to provide a rapid mass transferring channel; and meanwhile, the material has relatively good conductivity through a relatively high graphitization degree. The three-dimensional hierarchical porous carbon film is a very excellent material for an electrode, a biosensor and a super-capacitor. For example, the manufactured carbon film is fixedly arranged on a copper rod and a high-sensitivity glucose sensor is manufactured through further nano modification; the detection lower limit can reach 1*10<-13>mol / L.

The invention relates to a novel implantation device of an implantable biosensor. The implantation device comprises an implantable biosensor implanter, wherein an implantable sensor fixing device in which a bend-free implantable biosensor is obliquely clamped at the transmission end of the implantable biosensor implanter; and the implantable sensor fixing device is placed on a base, and the base is detachably and fixedly connected with the implantable biosensor implanter. According to the implantation device, the implantable biosensor is pushed into the fixed clamping groove in the base through the implantable biosensor implanter, so that the detection part of the bend-free sensor can be implanted into skin to perform detection, the sensor does not need to be bent after the implantable biosensor is implanted into the skin, and the sensitivity of the sensor is prevented from being influenced by bending, so that the detection effect is more accurate.

Disclosed is a mobile terminal. The mobile terminal comprises a first circuit board; a first charge chip arranged on the first circuit board; a power supply management chip arranged on the first circuit board; a second circuit board; a second charge chip which is arranged on the second circuit board and is connected in parallel with the first charge chip; and a temperature measurement part which is arranged on the second circuit board and is connected with the power supply management chip. The mobile terminal can monitor and control the temperature of the second circuit board in real time and improves the performance of the mobile terminal.

The present invention relates to systems and methods for magnetic actuation of particles from and toward the surface of a sensor with a magneto -resistive element. The orientation of magnetic fields and arrangement of magnetic field generating means with respect to the sensor maintains or restores the sensitivity of the magneto -resistive element after actuation.

The invention relates to a method for manufacturing a capacitance type micro-silicon microphone. The method includes the following steps: S1, providing a substrate, S2, depositing insulating materials on the front face of the substrate to form a first insulating layer, S3, depositing electric conduction matters on the first insulating layer to form a movable sensitive layer, and forming a plurality of narrow grooves in the movable sensitive layer to define an oscillating body, a frame arranged on the periphery of the oscillating body in a surrounding mode and a beam for connecting the frame and the oscillating body, S4, depositing insulating materials on the movable sensitive layer to form a second insulating layer, and depositing electric conduction matters on the second insulating layer to manufacture a back counter electrode, S5, forming a plurality of sound holes in the back counter electrode, S6, forming a metal pressure welding point, S7, forming a back cavity in the substrate, wherein the back cavity extends from the back face of the substrate to the front face of the substrate to penetrate through the substrate, and S8, removing part of the first insulating layer to enable the oscillating body to be exposed out of the back face of the substrate and enable the oscillating body and the beam to be suspended, and removing the part, among the oscillating body, the beam and the back counter electrode, of the second insulating layer.

The invention discloses a method for protecting a built-in optical fiber of a composite material. The method comprises the following steps of: protecting an embedded optical fiber part, namely coating a layer of polymer film on the surface of the embedded optical fiber part; and protecting a leading-out optical fiber part, namely wrapping demoulding cloth on the leading-out optical fiber part, and packaging the leading-out optical fiber part by using silicon rubber for protection. After the embedded part of the composite material with the built-in optical fiber is protected, because the coating layer is relatively thin, the sensitivity of the optical fiber is not influenced; and repeated experiments prove that the leading-out part is well protected, the optical fiber damage rate of the composite material with the built-in optical fiber is greatly reduced, and working efficiency is improved.

The invention discloses a preparation method of a microneedle array biosensor. The preparation method of the microneedle array biosensor comprises the following steps: making a conductive microneedlearray with rough surface; modifying a biological recognition molecule on the rough surface of the microneedle array; adding a degradable macromolecular material on the surface, on which the biologicalrecognition molecule is modified, of the microneedle array. The microneedle array in the microneedle array biosensor has the rough surface, so that protection of the biological recognition molecule modified on the surface of the microneedle array in the puncture process is benefited; furthermore, the degradable micromolecular material added on the outer layer of the microneedle array can realizesecondary protection of the biological recognition molecule.

The invention relates to an improved breaker, which comprises a shell, a circuit protection actuating mechanism, a moveable contact, a fixed contact and an arc suppressing device and also comprises a tripping mechanism, wherein the tripping mechanism comprises a burst jump rack, a tripping rotor and a drive part; the moveable contact is arranged on the tripping rotor; the burst jump rack is matched with the tripping rotor to control the quick joint of the contacts; the tripping rotor is provided with a clamping mechanism; the drive part is matched with the clamping mechanism to control the clamping or separation of the clamping mechanism; and the circuit protection actuating mechanism is matched with the tripping mechanism to drive the separation of the clamping mechanism. The design of the clamping mechanism in the breaker ensures that a separation force is separated from a contact pressure, no matter how big the contact pressure is, the separation force is always kept constant, so that the pressure between the contacts can meet the requirements of the breaker in circuit environments with different current volumes, while the separation force of the tripping mechanism is not changed. Thus, the breaker has the advantages that: sensitivity is not affected; universality is higher; installation is convenient; and a structure is simple.

The invention discloses water and dry beach safety monitoring equipment. The equipment comprises a bracket playing a bearing effect, and a float ball playing a buoyancy support effect, wherein the float ball and the bracket are mutually connected to form an entire external contour which presents a triangle on a lookdown or an upward direction. The monitoring equipment disclosed by the invention aims at providing novel water and dry beach safety monitoring equipment for the problem that the existing water and dry beach safety monitoring equipment cannot take both floatability and stability into consideration. The shape of the equipment can be improved to perform wind-resistant design on the basis of maintaining the weight of the monitoring equipment to be unchanged, and the equipment stability is improved in the premise of not reducing the equipment floatability. The monitoring equipment can be compatible with the data collection sensitivity and smaller data fluctuation range, thereby obtaining more accurate monitoring data.

The invention relates to a sealant applied to sealing of underwater optical electronic equipment and a preparation method thereof, and belongs to the field of sealing materials. A base material of thesealant comprises high-molecular butyl rubber and natural rubber which are combinedly used, and a low radioactive filler, low-molecular polyisobutylene, middle-molecular polyisobutylene, an activator, a mildew inhibitor and a coupling agent are added. With combined use of butyl rubber and natural rubber, not only are the characteristics of good air tightness and water tightness of butyl rubber retained, but also the shortcomings of poor processability, poor vulcanization property and cold flow of butyl rubber are overcome, so that the sealant has the advantages of good air tightness, water tightness, low cold flow property and high strength. The low-molecular polyisobutylene and middle-molecular polyisobutylene as a tackifier and a viscosity regulator have good compatibility with butyl rubber, have no small molecular migration or volatilization, have good adhesion with optical glass, metal materials and non-metallic materials, and at the same time, make a sealing strip have pressure sensitivity and be easy to construct.

The invention relates to an automatic gain control system for proximity signals. The automatic gain control system comprises a coupler, a first-stage gain control module, a second-stage gain control module and a detector, the coupler, the first-stage gain control module and the second-stage gain control module are connected in sequence, and a signal is input from the coupler and output from the second-stage gain control module; the output end of the coupler is connected with the detector, and the output end of the detector is connected with the first-stage gain control module. The automatic gain control loop has the advantages that the starting speed of the automatic gain control loop is high, and the response time of the loop is within 100nS; the gain control dynamic range is large and is greater than 40dB; a digital circuit is not involved, and the influence of harmonic waves of a digital circuit clock on the sensitivity of the detector is reduced.

The invention discloses a multifunctional electronic mathematics podium, the structure of which comprises a podium panel, a controller, a loudspeaker, a baffle plate, a sliding plate, an electronic board, a locker one, a drawer plate, and a locker two. The podium panel is composed of the upper panel and the rear side panel, which is an "L"-shaped structure. The upper panel of the podium panel is an irregular rectangular panel surface, and the outer side is concave. The position of the upper panel of the podium panel is equipped with a controller. , the loudspeaker is located on the right side of the podium panel, the electronic board is provided at the groove in the middle of the podium panel, the locker one is located on the left side of the podium panel, and the rear upper side of the podium panel There is a baffle at the position, which is connected by a vertical installation method. The present invention has a sliding plate. When the electronic board is not in use, it is protected by the board body, which can effectively reduce the accumulation of dust and avoid the sensitivity of the internal parts being affected. .

The invention discloses a three-dimensional angular displacement six-degree-of-freedom sensor system, a measuring method and a manipulator. The sensor system comprises a three-dimensional elastic strain sensing element and complex strain measuring elements; the three-dimensional elastic strain sensing element is of a columnar or tubular structure, one end of the three-dimensional elastic strain sensing element is fixed, and the multiple complex strain measuring elements are arranged at one side of the fixed end of the three-dimensional elastic strain sensing element in an integrated manner; and when the free end of the three-dimensional elastic strain sensing element performs six-degree-of-freedom motion, the displacement of the free end of the three-dimensional elastic strain sensing element is determined according to the measurement values of the complex strain measurement elements. Through the technical scheme of the invention, the response speed of the sensor system is improved, and the accuracy of displacement measurement is improved under the condition of low cost.

The present application discloses a control method, device, electronic device and storage medium for information transmission and reception, belonging to the technical field of electronic devices. The method includes: when the first transmission and reception circuit receives information, acquiring the current block error rate of the first transmission and reception circuit; When the block error rate is greater than the first preset threshold, the current reference signal received power of the first transceiver circuit is obtained; when the current reference signal received power is greater than the second preset threshold, the external low noise amplifier is controlled to bypass the Mode to receive information; when the current received power of the reference signal is less than or equal to the second preset threshold, the external low-noise amplifier is controlled to receive information in an enabled mode. In this embodiment of the present application, when the current block error rate is greater than the first preset threshold, it is judged whether the first transceiver circuit is blocked due to external interference by the magnitude of the current received power of the reference signal, thereby improving the reception of the mobile terminal. Sensitivity of information.

The invention discloses an information receiving and transmitting control method and device, electronic equipment and a storage medium, and belongs to the technical field of electronic equipment. The method comprises the following steps: when a first receiving and transmitting circuit receives information, obtaining the current block error rate of the first receiving and transmitting circuit; under the condition that the current block error rate is greater than a first preset threshold value, acquiring current reference signal receiving power of the first transceiving circuit; under the condition that the current reference signal receiving power is greater than a second preset threshold value, controlling an external low-noise amplifier to receive information in a bypassing mode; and under the condition that the current reference signal receiving power is smaller than or equal to a second preset threshold value, controlling the external low-noise amplifier to adopt an enabling mode to receive information. According to the embodiment of the invention, under the condition that the current block error rate is greater than the first preset threshold value, whether the first transceiving circuit is blocked under the external interference is judged according to the size of the current reference signal receiving power, so that the sensitivity of receiving information by the mobile terminal is improved.

A new packaging structure of fiber optic hydrophone probe and fiber optic hydrophone array, including shell, polyurea composite material, armored optical cable, pressure plate joint, transition connection sleeve, Kevlar rope, acoustic sensor, etc. The shell is the pressure-resistant package of the acoustic sensor, which takes into account the pressure resistance and sound permeability of the probe. Polyurea composite material is a watertight packaging material with excellent water repellency and sound permeability. When multi-probes are in an array, the connection package adopts armored optical cables to protect the optical fibers between the probes, and has good watertight and mechanical properties. The two ends of the acoustic sensor are connected to the armored optical cable through the pressure plate joint, and the outer part of the pressure plate joint is covered with a transition sleeve for sealing. There are a number of fixing holes on the connection sleeve, which are used to fix the Kevlar rope and improve the tensile strength of the array detection cable. strength. Compared with the prior art, the invention has high structural reliability, good water tightness, strong deep water pressure resistance, and easy engineering and mass assembly.

The invention discloses a vulcanization mold, which comprises a vulcanization mold body composed of a base and a cushion block; the base comprises a heating plate; a heating cavity is formed in the heating plate; a heating pipe is arranged in the heating cavity, and the top of the heating plate is fixedly connected with the bottom of the cushion block; a heat insulation block is fixedly connected to the bottom of the heating plate; a sliding mechanism is fixedly connected to the bottom of the heat insulation block; the sliding mechanism comprises a bearing block; a hydraulic cavity is formed in the bearing block; an elastic clamping ring is fixedly connected to the top of the inner wall of the hydraulic cavity; and an outer pushing block is fixedly connected to the bottom of the elastic clamping ring. The invention relates to the technical field of molds. According to the vulcanization mold provided by the invention, the problems that the mold is too heavy and inconvenient to move, the mold does not have a heating function and must be heated through heating equipment, and when an evaporator vulcanization plate is debonded in the vulcanization process, repeated adjustment can only be conducted by adding gaskets through experience are solved.

Disclosed is a mobile terminal. The mobile terminal comprises a first circuit board; a first charge chip arranged on the first circuit board; a power supply management chip arranged on the first circuit board; a second circuit board; a second charge chip which is arranged on the second circuit board and is connected in parallel with the first charge chip; and a temperature measurement part which is arranged on the second circuit board and is connected with the power supply management chip. The mobile terminal can monitor and control the temperature of the second circuit board in real time and improves the performance of the mobile terminal.

The invention relates to an improved circuit breaker, which includes a housing, a circuit protection action mechanism located in the housing, matching moving contacts and static contacts, and an arc extinguishing device, and also includes a tripping mechanism. The tripping mechanism includes a tripping mechanism. The buckle rotor, the driving part that drives the trip rotor to rotate, the movable contact is set on the trip rotor; the trip rotor is provided with a buckle mechanism, and the driving part cooperates with the buckle mechanism to control the snap-in or disengagement of the buckle mechanism , The circuit protection action mechanism cooperates with the buckle mechanism to drive the buckle mechanism to disengage. The design of the buckle structure of the present invention separates the disengagement force from the contact pressure. No matter how much the contact pressure is, the disengagement force will never become larger, so that the pressure between the contacts can meet the needs of the circuit breaker in circuits with different currents. The requirements of the environment, the release force of the tripping mechanism will not change, the sensitivity of the circuit breaker will not be affected, the versatility of the circuit breaker is wider, and the entire circuit breaker is easy to install and simple in structure.

The invention discloses a heat conduction induction coal-fired boiler flame detector. The heat conduction induction coal-fired boiler flame detector disclosed by the present invention comprises a shell and an induction probe, one end of the shell is provided with a groove, the induction probe is fixedly connected with the inner bottom surface wall of the groove, the inner bottom surface wall of the groove is spirally connected with a threaded driving rod, the inner part of the threaded driving rod is rotatably connected with a supporting rod, and one end of the supporting rod extends out of the shell and is fixedly connected with a protective cover. According to the heat conduction induction coal-fired boiler flame detector, the inductive probe is arranged in the groove, so that the inductive probe is not easy to be damaged due to impact, and in the use process of the induction probe, the threaded driving rod is rotated to drive a sliding column to slide into a strip-shaped sliding groove, so that a certain distance is kept between the protective cover and the induction probe, the protective performance is good, meanwhile, the detection of the probe is not blocked, and the detection effect is not influenced; and meanwhile, the protective cover can be stored in the groove, so that cooling water is prevented from entering the induction probe to damage the induction probe during maintenance.

Disclosed in the present invention is a sensor, wherein a detection structure comprises a first magnet, a second magnet, and a magnetoresistive sensor disposed in a common magnetic field formed by the first magnet and the second magnet. When at an initial position, the magnetoresistive sensor is located at a position in which the magnetic field direction of the first magnet is opposite to the magnetic field direction of the second magnet. The magnetoresistive sensor is configured to, during the vibration of a diaphragm, sense a variation in the common magnetic field of the first magnet and the second magnet and then output a variation electrical signal. Further comprised is a driving device for adjusting mutual positions between the magnetoresistive sensor and the first magnet and second magnet. Regarding the sensor of the present invention, the relative position between the magnetoresistive sensor and the first magnet and second magnet may be finely adjusted by means of the driving device, ensuring that the magnetoresistive sensor may work in a suitable magnetic field, and preventing an impact on sensor sensitivity due to fabrication and assembly errors.

The invention relates to a circuit breaker used for providing overload and short-circuit protection for electric circuits and electrical appliances, in particular relating to a bipolar circuit breaker. The technical scheme provided by the invention is as follows: the bipolar circuit breaker is characterized in that a tripping mechanism comprises a rotating wheel, a tripping frame, a sudden jump frame, a rotating shaft of the sudden jump frame, a spring of the tripping frame, a position-limiting rotating shaft, a tripping plate and a torsion spring, wherein a tension spring is arranged in the rotating wheel and a housing of the tripping mechanism, convex columns are arranged on two sides of the rotating wheel, moving contacts are sheathed on the convex columns, one end of the torsion spring is clamped on the moving contact, and the other end of the torsion spring is clamped on the rotating wheel. By adopting the scheme, the invention provides the novel bipolar circuit breaker which is simple in structure and can enable the pressure between contact points to meet the requirements of the circuit breaker in circuit environments with different current intensities; and furthermore, the tripping force of the tripping mechanism does not change, the sensitivity of the circuit breaker is not affected, and the universality is wide.

Disclosed is a mobile terminal. The mobile terminal comprises a first circuit board, a first charging chip arranged on the first circuit board, a second circuit board, a shielding cover arranged on the second circuit board, and at least one second charging chip which is arranged on the second circuit board and surrounded by the shielding cover, wherein the second charging chip is connected with the first charging chip in parallel. By adopting of the mobile terminal, the charging time can be shortened and temperature rise can be lowered while influence to sensitivity of an antenna is reduced.

The invention provides a radar parameter configuration method, which comprises the following steps: acquiring an environmental parameter of an environment where a radar is located currently, and determining a calibration value of a target parameter corresponding to the environmental parameter according to a parameter table obtained by calibrating the radar in different environments, and finally, configuring the target parameter according to the calibration value of the target parameter. Therefore, the radar can configure parameters according to the environment, the radar sensitivity is prevented from being influenced by the environment, and the detection performance of the radar is further prevented from being influenced.