51results about How to "Flexible and adjustable ratio" patented technology

The invention discloses a high-dispersion Co-based bimetallic catalyst based on ZIFs and a preparation method of the high-dispersion Co-based bimetallic catalyst based on ZIFs, and belongs to the technical field of synthesis of nanometer materials and catalysts, the method ingeniously utilizes the characteristics that metal nodes in ZnCo-ZIFs are high in dispersion and have periodic pore structures; first, a second active metal salt is introduced into ZIFs pore channels through a double-solvent method; then in the high-temperature calcination process, the low-boiling-point metal Zn volatilizes and plays a fence role, the distance between the active metals is increased, Co nodes and the second active metal are subjected to in-situ reduction, and the high-dispersion Co-based bimetallic catalyst loaded on the nitrogen-doped carbon carrier is obtained. The method is simple in process and convenient to operate, the composition of the obtained high-dispersion Co-based bimetallic catalyst is flexible and adjustable, metal particles are distributed in a high-dispersion form, and the high-dispersion Co-based bimetallic catalyst has good stability and is expected to be applied to hydrogenation reaction, synthesis gas conversion, alcohol selective oxidation and other reactions.

The invention discloses a large-scale MIMO DOA estimation method based on codebook assistance, and the calculation complexity is extremely high when a traditional DOA estimation algorithm is applied to large-scale MIMO due to the fact that the antenna scale in a large-scale MIMO system is extremely large. The present invention proposes a novel frame structure for downlink transmission. Based on the frame structure, a codebook assistance algorithm is introduced into DOA estimation. Specifically, a codebook channel is fed back to the combination of a traditional MUSIC algorithm and a convex optimization algorithm, so that the computational complexity caused by increase of the array number of DOA estimation in a large-scale MIMO system is solved. Under a codebook feedback mechanism, prior information can be fully utilized to obtain a directional angle range, so that the computational complexity of DOA estimation can be obviously reduced, and the simulation result verifies the effectiveness of the algorithm.

The present invention relates to a method for preparing cyclohexanol and cyclohexyl acetate by using cyclohexene and acetic acid. The method comprises: 1, carrying out a reaction on cyclohexene and acetic acid under the action of a catalyst to obtain an acetic acid-containing cyclohexyl acetate crude product; 2, carrying out a hydrolysis reaction on water and the acetic acid-containing cyclohexyl acetate crude product, and separating the mixture of cyclohexyl acetate and cyclohexanol from the mixture obtained through the reaction; and 3, rectifying the mixture of cyclohexyl acetate and cyclohexanol so as to respectively obtain cyclohexanol and cyclohexyl acetate. With the method of the present invention, the high-purity cyclohexanol product and the high-purity cyclohexyl acetate product can be obtained, the cyclohexanol selectivity is high, the process is simple, and the production cost is greatly reduced.

The invention provides a constant current type hybrid environmental protection charging device, which belongs to the electronic technology field and comprises a charging unit, a process and end indicating unit, an end executing unit, an end switching switch, a timing ending unit, a trickle resistor and a load unit. As the two transistors of the charging unit are connected in a constant current manner and are connected in parallel through a special way to form or-gate output, the charging process is one charged by constant current. Further, only one transistor works while the other transistor stands by. When the working transistor is damaged, the other one replaces. According to the invention, there are two ending manners available with one being that when the end voltage of a charger cell rises, the end executing is initiated after sampling to form the closing of the charging unit and the other being that when the counting of the end counting unit is completed, the end executing unit is initiated to form the closing of the charging unit. The end switching switch forms the selection. When the charging unit is closed, the trickle resistor provides trickle current to the charged cell for its maintenance.

A white LED (light-emitting diode) and a method for packaging the white LED relate to the technical field of semiconductor packaging. The white LED comprises a support, wherein a heat dissipating cup is arranged at the upper part of the support; a copper block and an electrode are arranged at the bottom of the heat dissipating cup; a blue light chip is arranged on the copper block; a lead is connected between the blue light chip and the electrode; the heat dissipating cup is internally coated with fluorescence glue which is prepared from the following raw materials: TMR-200647-380490 fluorescent powder, silicate 05742 fluorescent powder, silicate / nitride BLT-2500-AB fluorescent powder and silica gel 6551AB in a ratio of X: Y: Z: 100, wherein X ranges from 0.1 to 1, while Y ranges from 1 to 10 and Z also ranges from 1 to 10. The white LED and the method for packaging the white LED provided by the invention improve the reducibility of light emitted by the white LED and can satisfy the desired backlight of a liquid crystal television, and further are characterized by low production cost and high reliability; therefore, the white LED can be widely applied to the liquid crystal television.

The invention discloses a constant current charging-discharging pulse charger, and belongs to the technical field of electronics. The constant current charging-discharging pulse charger is composed ofa process indicting unit, a voice prompt unit, an N-type charging unit, an N-type discharging unit, an interface unit, a pulse unit, a double-selection termination unit, a load unit, and a trickle resistor. The N-type charging unit, the N-type discharging unit and the pulse unit, and the interface unit form a pulse charging form that is capable of charging and discharging and having a charging time longer than the discharging time. A constant current triode of the N-type charging unit is connected in the form of constant current, therefore forming constant current charging. The constant current charging-discharging pulse charger has termination after the full charging of the battery and termination after the end of the timing countdown which can easily switch. After the end of charging ordischarging, the trickle resistor provides required trickle current to a to-be-charged battery, the inverter in each unit is formed of a gate circuit that has mutation input and output. The constantcurrent charging-discharging pulse charger has strong loading capability. After the implementation, the constant current charging-discharging pulse charger can flexibly adjust the charging and discharging time of the to-be-charged power supply and is suitable to to-be-charged batteries of different types.

The invention discloses a hybrid type dual-finishing type floating charging apparatus, and belongs to the technical field of electronics. The hybrid type dual-finishing type floating charging apparatus comprises a constant current source, a silicon controlled rectifier charging unit, a discharging unit, an interface unit, a pulse unit, a dual-selection finishing unit, a voice control unit, a process indicating unit, a load unit and a trickle resistor; the constant current source provides a constant current for the silicon controlled rectifier charging unit, so that constant current charging can be performed; the pulse unit controls the interface unit and the discharging unit, and the interface unit controls the silicon controlled rectifier charging unit, so that a pulse form is formed; inone pulse period, charging and discharging coexist; by virtue of pulse, duty ratio adjustment is also performed, so that the charging time is longer than the discharging unit; in the measures, two finishing ways of finishing after the battery is fully charged and finishing when timing is completed are included and can be switched flexibly and conveniently; sound prompting is given out in finishing; and the trickle resistor provides the required trickle for the charged battery to realize scientific charging and maximum discharging for the battery, thereby maximizing the service lives and capacities of the charger and the charged battery.

The invention relates to a low-carbon environmental protection charging circuit scheme, and belongs to an electronic technology. The low-carbon environmental protection charging circuit scheme is composed of a charging portion, a starting and ending unit, a pulse generating unit, an interface unit, a logic and charge display unit, a discharging portion and a load unit, and is characterized in that the charging portion and the discharging portion perform a scientific charging mode of charging while discharging on a charged battery when a power supply is turned on, the discharging portion is turned off when the charging portion is turned on, the discharging portion is turned on when the charging portion is turned off, a pulse charging mode in which the charging process is longer than the discharging process is formed, both the charging portion and the discharging portion are provided with a dormant circuit and an operating circuit, the dormant circuit is on standby when the operating circuit is in operation, and the dormant circuit is put into operation automatically when the operating circuit is damaged, so that utilization of a charger is guaranteed, the charging portion and the discharging portion are turned off when the charged battery is fully charged, and trickle current in the charging portion provides required maintenance trickle current for the charged battery, thereby realizing scientific pulse charging, and realizing environmental protection of the society.

The invention discloses a preparation method of a selenium-rich liquid chemical fertilizer. The method comprises the following steps: employing bentonite pickling wastewater containing K <+>, Na <+>,Ca <2+>, Mg <2+>, Fe <3+> and SeO3 <2-> as a raw material, adding caustic soda flakes to neutralize to enable the pH value of the wastewater to reach 6.0-7.0; then feeding the supernatant into a reverse osmosis water treatment device, and concentrating the mixed liquid until K <+> is 10.0-20.0 g / L, CaSO4 is supersaturated, Mg <2+> is 30.0-40.0 g / L, Fe <3+> is 0.3-1.0 g / L and SeO <2-> is 0.1-0.3 g / L; finally, adding ammonium nitrate, potassium nitrate and calcium hypophosphite in proportion, so that the molar ratio of N to P to K in the compound fertilizer is 20:(15-5):(15-5), wherein the concentration of P reaches 10.0-20.0 g / L. The method has the advantages that the process is simple, and the operation is convenient; industrial wastewater is utilized, so that the method is environment-friendly; the prepared compound fertilizer is reasonable in proportion of large and medium elements, and also contains a small amount of trace elements Fe and Se required by plants.

The invention provides a double-N type pulse environment-friendly charging device, and belongs to the technical field of electronics. The device is formed by a charging portion, a pulse generation portion, an end-start adjustable unit, a charging display circuit, an end-start control portion, a discharge portion, and a load unit, and oscillation of the pulse generation unit is a control circuit for forming pulse charging of the charging portion and the discharge portion; when the charging of the charging portion is switched on, the discharge portion is switched off; when the charging portion is switched off, the discharge portion is switched on so that a scientific pulse charging mode in which the charging time is longer than the discharge time is formed; and when a battery is fully charged, the charge portion and the discharge portion are switched off, and a trickle resistor in the charging portion provides maintenance current to a charged power supply. According to the device, the charging portion and the discharge portion both have the standby automatic switching function, the circuit reliability is guaranteed, pulse charging while charging and discharge is formed, the pulse generation unit can flexibly adjust the frequency and the time of duty ratio, convenience and reliability are achieved, and the device is applicable to the charged batteries with different capacities and is a convenient environment-friendly charging device.

The invention discloses a method for carrying out internal olefin hydroformylation reaction by using a phosphine oxide polymer supported catalyst, and the catalyst takes one, two or more than two of metals Rh, Co, Ir, Ru, Pt, Pd and Fe as active components, and takes a phosphine oxide polymer as a carrier. The heterogeneous catalyst provided by the invention has good performance in internal olefin hydroformylation reaction, a hydroxyl functional group connected to P can be formed after the secondary phosphine oxide monomer in the catalyst body is coordinated with metal, the acidity of the hydroxyl functional group is beneficial to internal olefin isomerization, the ratio of normal aldehyde to isomerous aldehyde in a hydroformylated product is flexible and adjustable, and the catalyst has good catalytic activity. And the alkane content in the product is lower than 1%. The phosphine oxide polymer supported catalyst provided by the invention is simple and efficient to separate from reactants and products, the production cost of high-carbon aldehyde is greatly reduced, and a new industrial technology is provided for internal olefin hydroformylation reaction.

The invention relates to an applicable type cell float charger and belongs to the electronic technology field. The applicable type cell float charger comprises a constant current charging unit, a discharging unit, an interface unit, a pulse unit, a selection unit, a counting unit, a voltage limiting starting unit, a load unit, a process indicator unit, an ending unit and a trickle resistor, wherein the constant current charging unit, the discharging unit, the pulse unit and the interface unit commonly form a charging / discharging pulse charging mode, the charging time is longer than the discharging time, a triode of the constant current charging unit is in a constant current mode, so constant current charging is realized. The float charger is advantaged in that an ending mode after fully charging of a cell and an ending mode after timed counting in place are employed and are two flexible conversion modes, the needed trickle current is provided by the trickle resistor to the charged cellafter charging ending, a discharging cut-off switch is arranged in the discharging unit, charging flexibility is realized, after enforcement, scientific and maximum charging of the charging cell is realized, and service life and the capacity of the charger and the charged cell are improved to the maximum degree.

The invention provides a pulse timing low-carbon and environment-friendly charging device, and belongs to the technology of electronics. The pulse timing low-carbon and environment-friendly charging device is composed of a charging display unit, an interface unit, a charging unit, a pulse generation unit, a discharging unit, a sampling adjustable unit, an end control unit and a load unit. After the power is on, all the units start to work, wherein the charging unit and the discharging unit perform the process on a charged battery in which charging is greater than discharging. When the charging unit is powered on for charging, the discharging unit is powered off; and when the charging unit is off, the discharging unit is powered on for discharging so as to form the mode of pulse charging until completion of charging. The cutting switch in the discharging unit can also be used for cut-off so as to increase the flexible selectivity. After the charged battery is fully charged, the charging unit and the discharging unit are powered off, and then the trickle resistor in the charging unit provides trickle current required for maintenance of the charged battery. After application of the device, all the units are scientifically connected, and comprehensive utilization can be realized, the line circuit is concise and the reliability is high so that the device is quite suitable for miniature enterprise production.

The invention discloses a ferrocenyl azophenyl photoelectric double-response polymer material for information storage and a preparation method thereof. Firstly, ferrocenecarbonyl chloride is prepared,then a methacrylic acid ferrocenyl formyloxy ethyl ester monomer is prepared by using ferrocenecarbonyl chloride, and a methacrylic acid-4'-nitryl azoaniline monomer is prepared by using 4-amino-4'-nitroazobenzene; the ferrocenyl azophenyl photoelectric double-response polymer material is prepared in combination with the two monomers. The photoelectric double-response polymer with a special function of information storage is prepared, the thermal stability of the material is good, the stimulation response phenomenon is obvious, and the photoelectric response detection is convenient.

The invention provides an Internet of Things water and fertilizer all-in-one machine for intelligent agriculture, which comprises a fertilizer storage box, a water tank, a proportion control box and a soil loosening box. The bottom surface of the water tank is communicated with the top end of a second input pipe, the bottom end of the second input pipe extends into the proportion control box, and the left end of the top surface of the fertilizer storage box is connected with a cover plate through a hinge shaft. An electric cylinder bottom plate is fixed to the lower surface in the fertilizer storage box, an electric cylinder is fixed to the top surface of the electric cylinder bottom plate, an action rod is arranged at the power output end of the top of the electric cylinder, a middle piece is fixed to the top end of the action rod, a first connecting half shaft is fixed to the top surface of the middle piece, the bottom surface of the fertilizer storage box is communicated with the top end of a first input pipe, and the bottom end of the first input pipe extends into the proportion control box. According to the technical scheme, the technical problems that in the prior art, automatic fertilizer stirring capacity is not achieved, the water and fertilizer proportion cannot be flexibly adjusted, and integrated fertilization and soil loosening cannot be achieved are effectively solved, and application and popularization are facilitated.

The invention discloses a voltage limiting ending type silicon controlled floating charger, and belongs to the field of electronic technique. The voltage limiting ending type silicon controlled floating charger consists of a trickle resistor, a creative silicon controlled charging unit, a creative silicon controlled discharging unit, an interface unit, a pulse unit, a voltage limiting ending unit,a load unit, a voice control unit and a process indicating unit; a charging and discharging coexisting pulse charging mode that the charging time is longer than the discharging time is formed by thecreative silicon controlled charging unit and the creative silicon controlled discharging unit together with the pulse unit and the interface unit; in the charging and discharging coexisting pulse charging mode, in one period of pulse, the creative silicon controlled discharging unit is turned off when the creative silicon controlled charging unit is turned on, the creative silicon controlled discharging unit is turned on when the creative silicon controlled charging unit is turned off, after a battery is full of electricity, the voltage limiting ending unit is turned on, the creative siliconcontrolled charging unit and the creative silicon controlled discharging unit are both turned off, voice reminding is emitted by the voice control unit, and trickle is provided for the charged batteryby the trickle resistor.

The invention relates to a floating charger capable of pulse charging, and belongs to the technical field of electronics. The floating charger comprises a process indication unit, a parallel discharging unit, a parallel charging unit, an interface unit, a pulse unit, a dual-selection ending unit, a load unit and a trickle resistor. A charging circuit difficult to damage is achieved by a few activepieces, the parallel charging unit, the parallel discharging unit, the interface unit and the pulse unit are combined to form pulse charging of which charging and discharging are simultaneously performed and charging time is larger than discharging time, a triode in the parallel charging unit is connected in a constant-current mode and is also in constant-current charging, two modes of ending after full charging of the battery and timely ending are arranged in measure, the switching is flexible and convenient, sound is reminded after ending, and a required trickle current is provided for a charged battery by the trickle resistor. After implementing the floating charger, the charging time and charging stopping time of the charged battery can be flexibly adjusted, different types of chargedbatteries are adapted, the lifetime of the charger and the charged battery is prolonged to the greatest extent, and environmental friendliness of society is achieved.

The invention discloses a simplified double selection pulse float charger, and belongs to the technical field of electronics. The simplified double selection pulse float charger is composed of a process indicting unit, a voice prompt unit, an N-type charging unit, an N-type discharging unit, an interface unit, a pulse unit, a double-selection termination unit, a load unit, and a trickle resistor.The N-type charging unit and the interface unit, and the pulse unit cooperate so as to form a pulse-type scientific charging method. A constant current triode of the N-type charging unit is connectedin the form of constant current, therefore forming constant current charging. The double selection termination unit has termination after the full charging of the battery and termination after the endof the timing countdown which can easily switch. After the end of charging or discharging, the trickle resistor provides required trickle current to a to-be-charged battery. In the line, the constantcurrent triode serves to control the on and off in charging and provides double functions of a constant current source, thus simplifying the line. The constant current charging apparatus can performcharging in a more scientific manner and provide maximum charging, so that the constant current charging apparatus can increase the service life and capacity of a charger and the to-be-charged batteryat the maximum and protect environment.

The invention discloses oscillation-type environmental protection pulse floating charging equipment, and belongs to the technical field of electronics. The equipment consists of a constant current source, a ring oscillator unit, a charging unit, a discharging unit, a process display unit, an interface unit, a double-end unit, an end change-over switch, a load unit, and a trickle resistor. An integrated circuit employing a phase inverter forms the ring oscillator unit, and controls the discharging unit, controls the charging unit through an interface triode, and achieves the charging and discharging pulse-type charging. Because the current of the charging unit is provided by the constant current source, the charging mode is a constant-current charging mode. Two end modes in the double-end unit are switched through the end change-over switch, and trigger the interface unit, so as to turn off the charging unit, and enable the ring oscillator unit to stop oscillation. A low voltage is outputted, and the discharging unit is turned off. At this moment, the trickle resistor provides a trickle current for a battery, and the charging and discharging units have standby tubes which are substitutes when a working tube is damaged, thereby improving charging reliability.

The invention relates to a double N-type pulse environmentally-friendly charging device and belongs to the electronic technical field. The double N-type pulse environmentally-friendly charging device is composed of a charging part, a pulse generating unit, a termination and starting adjustable unit, a charging display circuit, an termination and starting control unit, a discharging part and a load unit; an oscillation circuit in the pulse generating unit can be a control circuit for forming charging pulses of the charging part and the discharging part. When the charging part is turned on and performs charging, and the discharging part is turned off; when the charging part is turned off, and the discharging part is turned on; and therefore, a scientific pulse charging mode according to which charging time is longer than discharging time can be realized. After a battery is fully charged, the charging part and the discharging part are turned off, and a tiny resistor in the charging part provides maintaining current for a power source. With the double N-type pulse environmentally-friendly charging device of the invention adopted, both of the charging part and the discharging part have a back-up automatic switching function, and therefore, the reliability of a circuit can be ensured, charging-while-discharging pulse charging is realized. The pulse generating unit can flexibly adjust frequency and the time of duty ratio, and therefore, the double N-type pulse environmentally-friendly charging device is convenient and reliable, and can adapt to rechargeable batteries of different capacities.

The invention provides a solar thermal-electrical-chemical comprehensive utilization system. A first electrode of a photon-reinforced thermo-electronic emission device is attached to a heating surface of a chemical reactor; a second electrode is towards a light condensation device; electric energy converted by the photon-reinforced thermo-electronic emission device is output outwards; and thermal energy converted by the photon-reinforced thermo-electronic emission device and the heating surface of the chemical reactor drives the chemical reactor to generate a chemical product, so that the thermal energy is converted into chemical energy. According to the solar thermal-electrical-chemical comprehensive utilization system provided by the invention, loss of available energy, which is caused by direct conversion from high-grade solar energy to low-grade thermal energy, is reduced; energy utilization efficiency is improved; the grade of the thermal energy is promoted to the grade of the chemical energy; system efficiency is promoted; all-weather power supply and stable output of the electric energy are implemented; the solar thermal-electrical-chemical comprehensive utilization system can work in an electric energy stable output mode, a chemical energy output mode and an electric energy and chemical energy parallel output mode; flexible conversion of the light energy, the thermal energy, the electric energy and the chemical energy is implemented; and the solar thermal-electrical-chemical comprehensive utilization system is rich in energy supply variety and flexible and adjustable in proportion.

The invention discloses a charging-stopping pulse charging device, and belongs to the technical field of electronics. The device consists of a constant current source, a process display unit, an interface unit, a charging unit, an annular oscillating unit, a finishing change-over switch, a timing finishing unit, a voltage limiting finishing unit, a load unit, and a trickle resistor. The high and low output of the annular oscillating unit control the on / off of the interface unit, and the interface unit controls the charging unit to be turned on or off, thereby forming pulse-type charging. A current of the charging unit is supplied by the constant current source, so the mode is a constant current charging mode. The timing finishing unit and the voltage limiting finishing unit are switched through the finishing change-over switch, so the device is flexible and reliable. The timing finishing unit and the voltage limiting finishing unit are started, and the annular oscillating unit stops vibrating. Meanwhile, the charging unit is turned off. The trickle resistor supplies a trickle current to a charged battery. After implementation, the device achieves the scientific charging and maximumcharging of a rechargeable battery, thereby prolonging the service life of the charged battery to the greatest extent, enlarging the capacity of the charged battery to the greatest extent, and achieving the social environmental protection.

The invention discloses an N-type pulse double-ending constant current charger belonging to the electronic technology. The N-type pulse double-ending constant current charger is constituted by a constant current source, a process display unit, an interface unit, a charging unit, an oscillation unit used for forming pulse, an ending switching unit, an ending starting unit, a timing counting unit, a load unit, and a trickle resistor. After electrification, the constant current source is used to supply all of units with power, and therefore a charging form is constant current charging. The oscillation unit used for forming the pulse is used to control the interface unit to form high output and low output, and is used to control the switching on / off of the charging unit, and therefore a pulse form is formed. Two ending ways are provided, and according to one ending way, charging of a battery is ended, after the battery is fully charged, and according to the other ending way, the charging of the battery is ended, after the timing counting is in place. The ending switching unit is used to switch the two ending ways flexibly and conveniently, and after the charging is ended, the trickle resistor is used to supply the charged battery with required trickle current. The N-type pulse double-ending constant current charger is advantageous in that all of the units are connected together scientifically, and integrated utilization is realized; the line is simple, and is easy to produce, and is suitable for production of mini-sized enterprises.

The invention discloses a timing ending type pulse controlled floating charger, and belongs to the field of electronic technique. The timing ending type pulse controlled floating charger consists of atrickle resistor, a constant current unit, a charge unit, an interface unit, a pulse oscillating unit, a timing ending unit, a voice control unit, a load unit and a process indicating unit; the constant current unit is used for providing constant current for the charge unit, and thus constant current charging is realized; however, under the control of the interface unit, a charging and charging-stop pulse charging mode of the charging unit and the pulse oscillating unit is formed, and the charging time is longer than the charging-stop time, so that scientific charging for a charged battery isrealized, and the rejection rate is reduced; a timing ending type is adopted, a timer in the timing ending unit is low in static power consumption and wide in operating voltage range; after timing isended, the interface unit and the voice control unit are turned on, voice reminding is emitted while the charge unit is turned off, and simultaneously, the trickle resistor is used for providing sustaining trickle for the charged battery. The timing ending type pulse controlled floating charger is simple in circuit and easy to produce and debug, and is extremely applicable for microenterprise production.

The invention discloses a pulse-type battery floating charger, and belongs to the technical field of electronics. The floating charger consists of a constant current unit, a floating charging unit, asound control unit, an interface unit, a pulse unit, a timing end unit, a load unit and a process indication unit. The floating charging unit, the pulse unit and the interface unit jointly form a pulse charging mode which can achieve charging and stop charging, wherein the charging time of the pulse charging mode is longer than the time when the charging is stopped. A current required by the floating charging unit is provided by the constant current unit, so the floating charger achieves the constant current charging. The timing end unit employs a mode of timing counting, and stops the charging when the set time arrives. The floating charger is especially suitable for some batteries to be activated. After a final output end of a counter outputs a high voltage, the sound control unit is started, and sends out voice to give a prompt to a user. A trickle resistor is used for providing a required trickle current for a charged battery. After implementation, all units are scientifically connected, and achieve the comprehensive utilization. The floating charger is simple in circuit, and is high in reliability.