49results about How to "Trigger fast" patented technology

The invention discloses a preparation method and application of diethyl phosphinates, belonging to the field of green flame retardants. The preparation method of the diethyl phosphinates comprises the following steps of: making hypophosphorous acid and/or an alkali metal salt thereof react with ethylene under the irradiation of ultraviolet light in the presence of a photoinitiator in a solvent system to obtain diethyl phosphinic acid and/or an alkali metal salt thereof; and making the obtained diethyl phosphinic acid and/or the alkali metal salt thereof react with metallic compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Ce, Sn and/or Fe to obtain corresponding diethyl phosphinates. In the invention, the photoinitiator is decomposed into free radicals under the irradiation of the ultraviolet light to initiate an additive reaction so that the reaction rate can be improved, the energy consumption required in the reaction can be reduced and the production cost of products can be lowered.

The invention relates to a low-voltage SCR (Silicon Controlled Rectifier) structure for ESD (Electronic Static Discharge) protection of an integrated circuit chip, belonging to the technical field of electronics. The structure comprises two kinds of low-voltage SCR ESD protection devices, wherein the first kind of SCR ESD protection device integrates two N-well diodes and two NMOSs (N-channel Metal Oxide Semiconductors); the N-well diodes are connected between I/O (Input/Output) and a VDD (Virtual Device Driver); the NMOSs are connected between the VDD and VSS (Visual Source Safe); and the N-well diodes and the NMOSs form an SCR structure which provides ESD protection between PS and PD modes and VDD-VSS. The second kind of device integrates two P-well diodes and two PMOSs (P-channel Metal Oxide Semiconductors), wherein the P-well diodes are connected between the I/O and the VSS, and the PMOSs are connected between the VSS and the VDD, and the P-well diodes and the PMOSs jointly form an SCR structure which provides ESD protection between ND and NS modes and VDD-VSS. According to the invention, the chip has higher maintaining voltage and latch-up resistance effect during normal working and has lower triggering voltage and higher triggering speed during ESD; and the low-voltage SCR structure can effectively reduce the relative chip-occupying area of the protection devices and decrease parasitic capacitance at the same time of providing a plurality of modes of ESD protection functions and excellent ESD protection performance.

A fault current limiter based on a fast switch and a triggered vacuum switch is disclosed, which comprises a fast switch (1) and a current limiting resistor (2) which are connected in parallel, wherein, a first pulse capacitor (3), a first inductor (4) and a first triggered vacuum switch (5) are connected in series between two ends of the fast switch (1); a second pulse capacitor (6), a second inductor (7) and a second triggered vacuum switch (8) are connected in series between two ends of the current limiting resistor (2). The invention: 1) enables short circuit current to be incapable of reaching a first current peak value in a state of infinite current; 2) causes arc current of the fast switch to achieve fast zero crossing and then arc blowout; 3) can pass through large pulse current at high triggering speed and can achieve arc blowout at the time of the zero crossing of the pulse current; 4) can rapidly inhibit the short circuit current; 5) and automatically limits current subsequent to the short circuit of a system to ensure quality of power supply and save establishment expenditure of network.

The invention relates to electrical protection equipment, particularly to protection equipment for an open-wire wall-mounted socket, and aims to provide the protection equipment which can perform primary short-circuit protection and on-fire protection and cannot be inserted with a child finger carelessly by solving technical problems. For solving the technical problems, the invention provides the protection equipment for the open-wire wall-mounted socket; the protection equipment comprises mounting plates, first nuts, first threaded rods, a protection plate, a first supporting base and the like; wire inlet holes are formed in the left sides of the mounting plates on two sides; the first nuts are mounted in the middle parts of the outer sides of the mounting plates on two sides in a welding way; the first threaded rods are screwed in the corresponding first nuts; and the first threaded rods are screwed in the walls on the left sides of the mounting plates. The protection equipment can perform primary short-circuit protection and on-fire protection and cannot be inserted with a child finger carelessly; and left and right movement of a sliding sleeve can be controlled by adopting a second spring.

The invention discloses a preparation method of an organism in chemical industry technical field, in particular to the preparation method of a 2, 6-Dimethyl-2-Heptanol. The invention is that: firstly methylic Grignard reagent is prepared through taking Benzyl magnesium Chloride or Benzyl magnesium Bromide as an initiator, then is carried out the Grignard reaction with 2-Methyl-2-Hepten-6-Ketone, and finally is catalyzed and hydrogenated to synthesize 2,6-Dimethyl-2-Heptanol. The initiator prepared by the invention has the advantages of relatively stable property, easy preservation, higher initiating speed compared with commonly used initiator, strong universality, low dosage, convenient storage and low toxicity, etc. The initiator is especially suitable for preparing Grignard Reagent in mass production. The product prepared by the invention has better security and higher yield. The prepared product can be widely used in essence prescription of daily chemistry.

The invention provides a double-sided screen touch control method, which is applied to a double-sided screen terminal. The double-sided screen terminal comprises a main screen and a sub-screen. The method includes the following steps: setting a touch function of the secondary screen when detecting a secondary touch setting command; Receiving a touch signal on the sub-screen based on the set touchfunction of the sub-screen; Processing the received touch signal to obtain a corresponding touch action data signal; outputtihng The touch action data signal to the main screen to respond to the touchaction data signal and displaying a corresponding touch action on the main screen. The invention also provides a double-sided screen terminal, a readable storage medium. The invention solves the technical problems of poor manipulation of user fingers and easy fatigue of user fingers existing in the multi-fingered operation mode of the prior mobile terminal.

The invention discloses a two-component cationic visible-light initiator and application of the two-component cationic visible-light initiator in the photocuring technology. The two-component cationicvisible light initiator comprises diphenyl iodonium hexafluorophosphate and benzothiadiazole structural unit-based organic dye at a weight ratio of 1:(0.02-1), wherein diphenyl iodonium hexafluorophosphate with a CAS No. Of 58109-40-3) is a commercial ultraviolet photoinitiator, and the benzothiadiazole structural unit-based organic dye is adopted as a sensitizer of diphenyl iodonium hexafluorophosphate. The two-component cationic visible-light initiator has a wide absorption spectrum, curing molding of epoxide can be initiated under irradiation of a visible light source, and rapid curing canbe performed under low illumination of less than 30 mW/cm<2>, so that adoption of a traditional UV source with high energy consumption and large radiation is avoided; in addition, the benzothiadiazole structural unit-based organic dye has small synthesis difficulty, few steps and low-cost raw materials.

The invention relates to a metal-oxide semiconductor (MOS) arrangement for electrostatic discharge protection, the double grid arrangement manufacturing process is to make a first grid oxidation layer having a first thickness, and a second grid oxidation layer having a second thickness, wherein the first thickness is less than the second thickness, the MOS arrangement includes at least a first island arrangement and a grid arrangement, the first island arrangement has a first conductive block and a first grid oxide block, the first conductive block is stacked on the fist grid oxide block. The grid arrangement has a grid dielectric layer which is thicker than the first grid oxidation layer.

The invention discloses an intercepting device in a mining intercepting system and a using method. The intercepting device comprises a ground hook device and a ground hook triggering device. When thetriggering device receives an alarm signal sent by the stall rubber-tyred vehicle, an electromagnet is immediately controlled to act by a control circuit in the device; the electromagnet moves forwards to destroy the balance of the hinge structure, the heavy weight hung on the whole hinge structure falls off, the steel wire rope connected to the heavy object is driven to lift upwards, the other end of the steel wire rope drives the pin triggering the ground hook to transversely move to release the ground hook, the ground hook is popped up from the ground by the spring, therefore, the draggingsteel wire rope on the stall mining vehicle can be hung on the ground hook in time, the steel wire rope on the ground hook depends on the braking force generated by the automatic torque increasing device, then the force is amplified through the steel wire rope buffer to drag the vehicle, the vehicle is stopped within a short time, and the purpose of protecting the stall mining vehicle is achieved.

The invention discloses a T/R component phase shift accuracy testing method and system based on a trigger function. The method comprises the following steps that: after a state controller receives a phase shift starting instruction, continuously outputting N states of phase shift instructions to the T/R component; after each state of phase shift instruction takes effect, outputting a measurement synchronization signal to the "external trigger input" port of a vector network analyzer to trigger scanning; monitoring the measurement finishing signal of the "external trigger ready" port of the vector network analyzer in real time; and taking the current measurement finishing signal of the vector network analyzer as a next state of phase shift instruction beginning signal. The method has the beneficial effects that the frequency for an industrial personal computer to read the test data of the vector network analyzer is changed into one from 64, and testing efficiency is improved.

The invention discloses a downstream face waterproof material with soft exterior and rigid interior as well as a preparation method and an application of the downstream face waterproof material. The waterproof material comprises a component A and a component B. The component A comprises emulsified asphalt, an acrylate emulsion, an alkali swelling thickener, a polyurethane thickener, a dispersant,a multifunctional auxiliary agent, an antifoaming agent, a bactericide, ground calcium carbonate powder, bentonite, an organosilicon water repellent, sodium silicate, a photoinitiator, a cross-linkingagent and water; and the component B comprises sulphoaluminate cement, gypsum, silica fume, mineral powder, fly ash, citric acid, magnesium fluosilicate, magnesium oxide, sodium silicate, a reinforcing component and fumed silica. The waterproof material disclosed by the invention has rapid curing and self-healing properties; the material has the advantages of strong water impermeability, high tensile strength, high bonding strength and high and low temperature resistance, solves the problems that secondary or tertiary coating and vertical surface sagging cannot be carried out on a base surface of a downstream surface in a short time, and the vertical surface coated with the coating cannot be tiled and a pipe root part cannot be used, and has a wide application range.

The invention discloses a method for catalytically synthesizing a polycarboxylate water reducing agent by zinc salt. The method is characterized by comprising taking macromonomer, small monomer, chaintransfer agent, reducing agent, oxidant, catalyst and water; mixing the small monomer and the chain transfer agent to prepare a liquid A; mixing the reducing agent and the water to prepare a liquid B; adding the macromonomer and the water into a reactor with a thermometer, and heating and stirring; when the temperature reaches 47-52 DEG C and the macromonomer is completely dissolved, adding the oxidant, mixing, and adding dropwise at a uniform speed into the liquid A and the liquid B, wherein the total time for dropwise adding and heat insulation reaction is 2-2.5 h, cooling the materials after the reaction to room temperature, and obtaining the polycarboxylate water reducing agent. By the adoption of the method, the reaction temperature is low, the production efficiency is high, the production cost is low, the product dispersing performance and slump retention performance are good, industrial production can be performed, the practicality is high, and the obtained polycarboxylate water reducing agent is particularly suitable for preparation of cement-based building materials.

A rectangular coordinate type submerged-arc welding robot comprises: a controller which is used for transmitting a control instruction, receiving detection signal data and setting welding parameters so as to achieve automatic welding; a rectangular coordinate movement device which is used for adjusting the welding position; a welding loop device which is used for forming a welding loop to conduct automatic welding, wherein the welding loop device comprises a welding power source, a wire feeding assembly, a welding gun and a welding flux recycling device, and the welding flux recovery device is used for recovering redundant welding flux; a welding wire detection device which is used for detecting whether a welding wire is used up or not; a laser tracking device which is used for detecting welding seam characteristics, wherein the laser tracking device comprises a laser sensor, a laser sensing driver and a welding assembly.

The invention discloses a bidirectional SCR device triggered by a diode. A deep N well is arranged on a P-type substrate, a first P well, an N well and a second P well are sequentially arranged on the deep N well, a first groove is formed in the upper surface of the first P well, a second groove is formed in the junction of the first P well and the N well, a third groove is formed in the junction of the N well and the second P well, and a fourth groove is formed in the upper surface of the second P well; a first P+ injection region and a first N+ injection region are arranged on the two sides of the first groove, a first N+ injection region and a second N+ injection region are arranged on the two sides of the second groove, a second N+ injection region and a third N+ injection region are arranged on the two sides of the third groove, and a third N+ injection region and a second P+ injection region are arranged on the two sides of the fourth groove; the first P+ injection region and the first N+ injection region are connected with the anode, and the third N+ injection region and the second P+ injection region are connected with the cathode; and the second N+ injection region is connected with a diode D3 and a diode D4 through a diode string DS0. The SCR device is high in triggering speed.