39results 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 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.

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 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 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 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 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.

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.

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.

The invention provides a sleep product which is used for solving the problem that a monitoring device is low in monitoring accuracy. The sleep product comprises a sleep product body, at least two fixing devices, and a monitoring device; the sleep product body is provided with a first groove; the fixing devices are fixed to different positions of the monitoring device respectively; and the monitoring device is fixed in the first groove through the fixing devices, so that the monitoring device is fixed in the first groove in an undeformed state.