51results about How to "Sensitive quickly" patented technology

The invention relates to an inductance energy storage pulse power supply utilizing a superconducting pulse transformer, which belongs to the technical field of pulse power. It is characterized in that it includes a superconducting pulse transformer, a primary power supply is arranged on the primary side of the superconducting pulse transformer, and the output terminal of the primary power supply is simultaneously connected to the conversion branch, the freewheeling branch and the primary side of the superconducting pulse transformer through a controllable switch S1 At both ends of the winding, there is also an energy recovery branch connected between the conversion branch and the primary power supply; on the secondary side of the superconducting pulse transformer, one end of the secondary winding is connected to one end of the load control branch, and the other end of the secondary winding One end is connected to at least one set of superconducting energy storage inductance charging branch and one end of the switching branch at the same time, and the load control branch, the superconducting energy storage inductance charging branch and the other end of the switching branch are connected at one place. The inductive energy storage pulse power supply using superconducting pulse transformer adopts multi-module superconducting energy storage inductance to release more energy to the load, and at the same time solves the problem of overvoltage at the moment of switching.

The invention relates to a formaldehyde gas-sensing material, a gas-sensing element and a preparation method of the element. The gas-sensing element comprises a gas-sensing layer, two layers of ceramic matrixes and a heating electrode, wherein the two layers of ceramic matrixes are used for bearing the gas-sensing layer, and the heating electrode is arranged between the two layers of ceramic matrixes. The gas-sensing material comprises 68-84wt% of SnO2, 10-30wt% of In2O3, 1-8wt% of WO3, 1-5% of Pt and / or Pd and 1-4wt% of CaO. The preparation method includes mixing the above substances in proportion and adding pulping materials for pulping, producing a ceramic heating element by the two layers of ceramic matrixes and the heating electrode, and arranging a sizing agent on the ceramic heating element in a printing, spraying or other mode to form the gas-sensing element. The formaldehyde gas-sensing element has the advantages of being low in response temperature, fast in induction, high in sensitivity, wide in measuring range, small in drifting of resistance in the air and good in flexing resistance; and simultaneously the preparation method of the element has the advantages of being simple, low in cost, small in size, and suitable for quantitative measurement devices and production of portable devices.

The invention discloses a front power output gearbox of a wheeled tractor adopting a hydraulic clutch. The front power output gearbox comprises a case formed by a left shell and a right shell, wherein the case is provided with an input gear shaft, an output shaft and a hydraulic power unit, a driven gear is arranged on a position on the output shaft, which is close to the output end, the driven gear is engaged with a gear on the input gear shaft, a rolling bearing is arranged between the output shaft and the driven gear, the output shaft is provided with a clutch, a hydraulic oil cylinder is arranged on a position on the output shaft, which is far away from the output end, a cylinder body of the hydraulic oil cylinder is fixed on the output shaft, the output shaft is provided with an output shaft oil passage, the right shell is provided with a shell oil passage, the hydraulic power unit is provided with an oil outlet, the output shaft oil passage is communicated with the shell oil passage, the output shaft oil passage is communicated with an inner chamber of the hydraulic oil cylinder, an oil inlet of the hydraulic power unit is communicated with an external oil passage, and the oil outlet of the hydraulic power unit is communicated with the inner chamber of the oil cylinder through the shell oil passage and the output shaft oil passage. The front power output gearbox has the advantages of compact structure, light weight, high transmission efficiency and strong controllability and maneuverability.

The invention relates to an anti-dry protection device for an electromagnetic oven cooker, comprising a light-transmitting panel (1), a coil disc (2), a main control plate (3) and a base (4), wherein the coil disc (2) and the main control plate (3) are arranged in the base (4). The anti-dry protection device is characterized by also comprising at least one photosensitive element (5) which is capable of inducting the dry and the reddening of the cooker to generate resistance change, is arranged in the base (4) by a photosensitive element support (6), is positioned below a heating zone of the light-previous panel (1) and is electrically connected with the main control plate (3). The anti-dry protection device creatively adopts the photosensitive element to judge the heating condition of theheated cooker on the electromagnetic oven cooker so as to prevent and control the dry burning of the cooker, therefore, the induction is fast, the precision is high, and the protection device has no signal delay, is not influenced by the installation environment, and can timely and accurately conduct the dry judgment and protection on the cooker.

The invention provides a method for inversion of ground-based infrared remote sensing surface temperature, comprising step 1. constructing a measurement system, and collecting factors affecting measurement data, and step 2. finding out factors affecting infrared remote sensing surface temperature through the measurement system in step 1 Main factors, and as input parameters, step 3. build BP neural network through the sample data measured in step 1, step 4. use the measurement data of the measurement station to correct the data measured in step 1, and verify it by platinum resistance measurement the correctness of this method. The invention provides an inversion method for ground-based infrared remote sensing surface temperature, which can remotely measure any ground surface by using the principle of infrared radiation, and overcomes the problems existing in traditional platinum resistance measurement.

The invention discloses a wind resistance induction type fall arrester for elevator safety braking. The wind resistance induction type fall arrester comprises a shell fixedly connected to an elevatorcar, and the shell is provided with a guide rail slot matched with a guide rail; the shell is further connected to a speed sensing mechanism, and provided with a link mechanism matched with the speedsensing mechanism; the shell is further matched with braking sliding blocks connected to the link mechanism and used for braking; the speed sensing mechanism is used for sensing the elevator moving speed, and connected to the link mechanism, and the link mechanism comprises a rotary table; a shift lever is connected to the rotary table, and a rotating shaft can be driven to rotate synchronously through the rotation of the shift lever; the rotary table is installed on the shell, and can be rotated around its own axis; the rotary table is hinged to a pair of connecting rods separately, and connecting lines of the hinged positions between the connecting rods and the rotary table penetrate the central axis of the rotary table, and are arranged on the both sides of the rotary table symmetrically; and the suspension ends of the connecting rods are hinged to the braking sliding blocks.