224results about How to "Improve temperature stability" patented technology

A temperature control device includes a temperature detector, a difference operation unit, a controller, a saturation processing circuit unit, a rewritable storage unit, and a conversion unit. The difference operation unit operates a digital value corresponding to a difference value between a detected temperature value and a target temperature. The controller calculates a manipulated variable using the digital value operated by the difference operation unit. The saturation processing circuit unit includes a digital circuit to limit an output value of the controller to a pre-set upper limit value. The rewritable storage unit stores the upper limit value read from a storage area of the rewritable storage unit and input into the saturation processing circuit unit. The conversion unit converts the output value of the saturation processing circuit unit into an analog signal to output the converted value as a control command value to the heater.

The invention discloses an integrated optical diversity receiving device, solves the problem of high power consumption when the influence caused by phase distortion and light beam pointing error is corrected in the existing free space optical communication, and belongs to the field of optical communication. The method comprises the steps that free space light focused by a lens is received by a multimode / few-mode optical fiber; the multi-mode light beams received by the multimode / few-mode optical fiber enter the photon lantern; the photon lantern is coupled to the single-mode fiber array after mode demultiplexing; each light beam in the single-mode fiber array enters a polarization beam splitting rotary combiner through an edge coupler; the polarization beam splitting rotation combiner performs transverse electric wave (TE) and transverse magnetic wave (TM) mode separation on the entered light beam, then rotates the separated TM polarization state light to a TE polarization state, combines the rotated TE polarization state light and the separated TE polarization state light, and then enters the MZI network; the MZI network is used for realizing optical coherent beam combination; a control circuit controls the merging of the light beams in the MZI network.

The invention relates to the technical field of electrolytic capacitors, in particular to a high-frequency rapid charge and discharge aluminum electrolytic capacitor for a servo motor and a manufacturing method, the high-frequency rapid charge and discharge aluminum electrolytic capacitor comprises an anode foil, a cathode foil, a capacitor shell and electrolyte, porous electrolytic paper is arranged between the anode foil and the cathode foil, and oxide film layers are arranged on two sides of the anode foil. A stable and compact oxidation film is generated on the surface of the anode foil through the phosphoric acid formation liquid, so that the anode foil can withstand high-current impact, and the charging and discharging speed is greatly improved. According to the high-frequency rapid charging and discharging aluminum electrolytic capacitor for the servo motor and the manufacturing method, the high-frequency rapid charging and discharging aluminum electrolytic capacitor for the servo motor has excellent rapid charging and discharging performance, high voltage resistance, good temperature stability, long service life, high reliability and good heat dissipation performance.

The invention relates to the technical field of ceramic materials, in particular to vanadium-based zircon microwave dielectric ceramic and a preparation method thereof.The vanadium-based zircon microwave dielectric ceramic is prepared from, by weight, Bi2O3, La2O3, CeO2, Nd2O3, Sm2O3 and NH4VO3, the chemical formula of the vanadium-based zircon microwave dielectric ceramic is (Bi < 0.2 > La < 0.2 > Ce < 0.2 > Nd0. 2Sm < 0.2 >) VO4, powder of Bi2O3, La2O3, CeO2, Nd2O3, Sm2O3 and NH4VO3 is obtained based on the components of the vanadium-based zircon microwave dielectric ceramic by weight, and original powder is obtained; stirring and mixing the original powder, performing wet grinding treatment and drying treatment to obtain dried powder, and pre-sintering the dried powder in the air atmosphere to obtain pre-sintered powder; a binder is added into the pre-sintered powder for granulation, compression molding is carried out, sintering is carried out in the air atmosphere, the vanadium-based zircon microwave dielectric ceramic is obtained, the vanadium-based zircon microwave dielectric ceramic has the near-zero resonant frequency temperature coefficient, the thermal stability of a device can be guaranteed, and the service life of the device is prolonged. The method is widely used for manufacturing microwave devices such as various dielectric antenna substrates, resonators and filters.

The invention provides a sandwich multi-layer high-entropy lead-free dielectric material and a preparation method thereof, belongs to the technical field of energy storage ceramics, and aims to solve the technical problems that multi-layer ceramics are not compact in sintering, low in breakdown-resistant field strength and relatively low in energy storage performance. The sandwich multilayer high-entropy lead-free dielectric material comprises an upper dielectric layer, a lower dielectric layer and a middle high-entropy dielectric ceramic layer, the upper dielectric layer and the lower dielectric layer are both made of Mg2SiO4, and the high-entropy dielectric ceramic layer is made of Ba < 0.2 > Sr < 0.2 > Na < 0.2 > Bi < 0.2 > Ca < 0.2 > Ti < 0.25 > Ti < 0.25 > Nb < 0.25 > Zr < 0.25 > Mg < 0.25 > O < 3 >. The sandwich multi-layer high-entropy lead-free dielectric material prepared by the method has relatively high density, relatively high breakdown-resistant field strength, relatively high dielectric property, relatively high energy storage density and good discharge efficiency, the breakdown-resistant field strength reaches 1200 kV / cm, the maximum energy storage density reaches 6 J / cm < 3 >, and meanwhile, the sandwich multi-layer high-entropy lead-free dielectric material has relatively good temperature stability. The method has the advantages of simplicity, feasibility, low cost, convenience, rapidness, large-scale production and the like.

The invention discloses a lead-free energy storage ceramic laminated material, and belongs to the technical field of dielectric energy storage. The lead-free energy storage ceramic laminated material is formed by sequentially laminating lead-free energy storage ceramic with a texture structure and lead-free energy storage ceramic with a non-texture structure, and preferably, the material comprises at least three layers; when the lead-free energy storage ceramic with the texture structure is positioned on the middle layer, the lead-free energy storage ceramic with the non-texture structure is positioned on the two sides of the middle layer; when the lead-free energy storage ceramic with the non-texture structure is located on the middle layer, the lead-free energy storage ceramic with the texture structure is located on the two sides of the middle layer. Based on the structural design of at least three layers, the non-textured ceramic is selected as the high-voltage-resistant layer, the textured ceramic is selected as the high-polarization layer, the lead-free ceramic laminated material with excellent energy storage performance is obtained, and the lead-free ceramic laminated material has wide application prospects in the fields of power electronics and pulse power.

According to the feedback control circuit, the control method and the switching power supply applying the feedback control circuit, a secondary side controller serves as a main controller, and a current generation and mirror image module and a control signal generation module are arranged in the secondary side controller; the current generation and mirroring module generates a first current based on the output voltage or the signal representing the output voltage and the first voltage signal, and mirrors the first current into a second current; the control signal generation module generates a control signal based on the second current; and the secondary side controller realizes feedback control of the loop based on the control signal. Through the arrangement, an optocoupler is not needed, the current mirror image module can be compatible with an existing peripheral circuit structure, the structure is simple, and the transmission delay of the current mirror image module is far smaller than that of the optocoupler, so that unnecessary poles can be reduced, and a corresponding compensation network structure can be simplified; and the current mirror image module has better current and temperature stability and smaller temperature excursion, so that the light attenuation effect of an optocoupler can be avoided, and the service life of the current mirror image module is longer.

The invention discloses a hemispherical resonator gyroscope scale factor self-compensation system and method. An X-axis electrode and a Y-axis electrode are respectively connected with a buffer amplifier, an analog-to-digital converter and a demodulation unit through switches; one output of the demodulation unit is connected with the excitation signal demodulation unit and the scale factor compensation unit, the other output of the demodulation unit is connected with the control unit through the low-pass filtering unit, the output of the control unit is connected with the scale factor compensation unit and the two signal modulation units, and the two signal modulation units are respectively connected with an X-axis electrode and a Y-axis electrode through the digital-to-analog converter; and the output of the excitation signal generator is connected with the Y-axis signal modulation unit and the excitation signal demodulation unit. A Y-axis sine excitation signal response amplitude is extracted through an excitation signal demodulation unit, and a scale factor change relation can be obtained according to a ratio relation between the amplitude and an amplitude reference value. According to the invention, the self-compensation of the scale factor can be completed, the problem that the performance of the gyro scale factor is reduced due to temperature change and aging is solved, and the temperature stability and long-term working stability of the gyro scale factor are improved.

The invention discloses a piezoelectric type macro-micro force sensing device and a measurement method, solves the problem that an existing force sensor is difficult to meet quasi-static measurement of micro force, and belongs to the technical field of macro-micro force measurement. Two force measuring units with piezoelectric ceramics as sensitive elements and a piezoelectric quartz reference unit with a piezoelectric quartz wafer as a sensitive element are used as sensors, the piezoelectric quartz reference unit is used for measuring macroscopic force, the force measuring units are used for measuring micro force, and continuous quasi-static measurement of the micro force can be realized through alternation of the two force measuring units. The resolution of the sensor is improved by utilizing the characteristic of high sensitivity of piezoelectric ceramics; and the stability of the sensor is improved by utilizing the characteristics of good linearity, high temperature stability and no hysteresis of piezoelectric quartz. Two indexes of high precision and wide range of the force sensor can be considered, multi-range quasi-static macro-micro force measurement is realized, and the force sensor has the advantages of high rigidity, high frequency response and the like.

The invention relates to an intelligent photovoltaic curtain wall which has the function of adjusting light transmission intensity. The surface of the photovoltaic curtain wall is fully covered by the photovoltaic module, the supporting body is installed behind the photovoltaic battery module, and the photovoltaic module is fixed on the supporting body through the module fastener. Air hole channels are arranged among the photovoltaic modules to adjust temperature, and air holes can be connected with external constant-temperature systems such as a central air conditioner, so that the photovoltaic curtain wall has good constant-temperature capability. The photovoltaic cell is located between the guide rails, and the controller controls the driving motor to achieve movement of the cell position, so that the light transmission intensity is adjusted in good time. A mechanical arm and a control motor are arranged in the photovoltaic cell storage box and used for storage and output of photovoltaic cells, and the control motor receives instructions of the controller to operate. The controller is connected with the driving motor and the control motor through data lines, the shielding area ratio of the photovoltaic cell is automatically adjusted according to user requirements, and automatic adjustment of the light transmission intensity is achieved.

The invention discloses a high-power-supply-rejection-ratio band-gap reference circuit with base current correction and high-order temperature compensation, which comprises a pre-voltage-stabilizing circuit module used for generating and outputting internal power supply voltage according to external power supply voltage, the internal power supply voltage is supplied to the band-gap reference core circuit module so as to isolate transmission of power supply noise to reference output; the high-order temperature compensation circuit module is used for generating nonlinear compensation current according to the bias voltage; the band-gap reference core circuit module is used for generating current in direct proportion to absolute temperature, reference voltage and reference output voltage based on internal power supply voltage and feeding back the reference voltage to the pre-voltage-stabilizing circuit module to serve as bias reference; and the base current correction circuit module is used for sampling the base current of the bipolar transistor in the band-gap reference core circuit module. On the premise that the circuit structure and the power consumption are reasonable, the temperature drift of the reference voltage is reduced, and the power supply suppression capability is improved.

The present invention discloses Streptomyces SC-3 and its composition and use. The Streptomyces SC-3 strain is deposited in China Center for Type Culture Collection with the deposit number CCTCC NO:M 2024906. The present invention finds that the Streptomyces SC-3 strain itself has high efficiency and broad-spectrum antibacterial activity, and finds that the Streptomyces SC-3 strain has a significant antagonistic effect on kiwifruit soft rot bacteria. It is verified by indoor experiments that the speed of kiwifruit fruit decay caused by Phomopsis can be slowed down. Its fermentation liquid has good temperature stability, and a variety of antibacterial substances are identified from its sterile fermentation liquid, including antibiotics such as antimycin, tetramycin, candidacidin, streptomycin, etc., which are widely used in biological control. The speed of fruit decay caused by the infection of Botrytis cinerea after inoculation can be effectively inhibited.

The invention belongs to the field of refractory materials, and particularly relates to a low-chromium magnesite-chrome brick with high high-temperature flexural strength and a preparation method thereof.The low-chromium magnesite-chrome brick is prepared from raw materials including fused magnesite particles, fused magnesite fine powder, high-purity magnesite particles, chromium concentrate particles, chromium concentrate fine powder, high-purity magnesite fine powder and nano yttrium oxide, and a binding agent and lime milk are additionally added; the preparation method comprises the steps of pretreatment, wet grinding, forming and drying, coating and sintering. The process is simple, the product with good performance can be prepared, the chromium content in the product is reduced, the product is more environmentally friendly while the original advantages are kept, the high-temperature breaking strength, the high-temperature refractoriness under load and the thermal shock stability of the product are improved, and the breaking strength of the product at the high temperature of 1850 DEG C reaches 5.5-6.5 MPa.

The invention belongs to the field of food engineering and the field of biological macromolecular materials, and particularly relates to a preparation method and application of oleogel based on protein fibers. The oleogel is prepared from the prolamin from barley and different protein fiber and xanthan gum compounds, the obtained oleogel has high oil holding capacity, high storage modulus, better thixotropic resilience and good temperature and thermodynamic stability, and different types of oleogels can be suitable for different processing scenes, so that the oleogel can be applied to different processing fields. The method can be widely applied to the fields of foods, medicines and cosmetics.

The invention relates to the technical field of low-resistance conductive materials, and particularly discloses a base particle vortex mediated near-room-temperature ultralow-resistance material which comprises a main body material and a regulating medium, the main body material is a doped transition metal oxide or a carbon-based composite material; the regulation and control medium is a low-atomic-weight doping agent; the doped transition metal oxide is La-doped SrTiO3 or Nb-doped TiO. Compared with a traditional copper conductor, the material has the advantages that the resistance is obviously reduced, the energy loss in the electron transmission process can be greatly reduced, the energy efficiency of electronic equipment and new energy equipment can be obviously improved, the material can adapt to the environment temperature change of most indoor and outdoor engineering application scenes, and the application prospect is wide. The problem that part of low-resistance materials are poor in temperature stability is solved, the reliability of long-term operation of devices is guaranteed, conventional processes and equipment such as magnetron sputtering, spin coating and pyrolysis, tube furnace doping and mechanical bending are adopted in the whole process, the operation process is clear and easy to understand, and large-scale production can be achieved in common material laboratories or small and medium-sized production workshops.

The invention discloses an aerosol generating product and an aerosol generating system.The aerosol generating product comprises an aerosol forming base material sheet and a magnetic heating body sheet, and the magnetic heating body sheet and the aerosol forming base material sheet are arranged in a stacked mode in the thickness direction and attached in the stacked area in a surface contact mode; the main heat conduction path directed from the magnetic heating element sheet to the aerosol-forming substrate sheet is a path passing through the thickness direction of the laminated region. Compared with the prior art, the magnetic heating body sheet and the aerosol forming base material sheet are laminated along the thickness direction, and the surface contact is realized in the lamination area, so that the main conduction path of heat from the magnetic heating body sheet to the base material is a short path passing through the lamination thickness direction; therefore, heat conduction distance is shortened, interface thermal resistance is reduced, and heating response speed and energy utilization rate are improved. And meanwhile, the base material is heated more uniformly, so that the aerosol generation efficiency and consistency are improved, and the risk caused by local overheating is reduced.

The invention discloses a refrigerator and a control method thereof.The refrigerator comprises a freezing chamber, a refrigerating chamber, a variable-temperature chamber and a refrigerating system, and the refrigerating system is a double-circulation refrigerating system and comprises a compressor, a condenser, a throttling device and a chamber evaporator which are sequentially connected; the compartment evaporator comprises a freezing evaporator, a refrigerating evaporator and a variable-temperature evaporator, the refrigerating evaporator and the variable-temperature evaporator are connected in parallel and then connected with the freezing evaporator in series, and the compressor, the condenser, the throttling device, the refrigerating evaporator and the freezing evaporator form a first circulating refrigerating system; and the compressor, the condenser, the throttling device, the variable-temperature evaporator and the freezing evaporator form a second circulating refrigerating system. The problem that in the prior art, the temperature of the freezing chamber of an independent three-cycle refrigerating system refrigerator is unstable is solved, the temperature stability of the freezing chamber is improved, and the refrigerating effect of the refrigerator is effectively improved.

The invention discloses a high-light-weight remote sensing camera focal plane supporting structure. The structure comprises a focal plane main bearing; the focal plane main bearing comprises a composite rod, a focal plane side support and an interface module; the three composite rods are parallel, the two ends of each composite rod are fixedly connected with the two focal plane side supports respectively, and three connecting points of the three composite rods and the same focal plane side support are distributed in a triangular shape. And the interface module is arranged on the composite rod and is used for connecting the functional module. The invention further provides a high-light-weight remote sensing camera focal plane which comprises the supporting structure, a splicing reflector, a detector, a back circuit and a thermal control module, wherein the splicing reflector, the detector, the back circuit and the thermal control module are fixed to the supporting structure. The supporting structure is high in specific stiffness, high in temperature stability and high in interface adaptability, the mechanical burden of the camera body is greatly relieved, and resources of the whole machine are saved.

The invention discloses a method for recovering dimethyl ether from dimethyl ether purge gas, and belongs to the technical field of dimethyl ether recovery, the method for recovering dimethyl ether from dimethyl ether purge gas comprises the following steps: cooling the dimethyl ether purge gas to 8-10 DEG C through heat exchange of a heat exchanger, and then discharging to obtain low-temperature purge gas, the low-temperature purge gas enters the bottom of the inner side of an absorption tower filled with composite filler and is absorbed by absorption liquid which flows from top to bottom and has the temperature of 10-15 DEG C, and enriched liquid is formed at the bottom of the absorption tower; according to the method, the composition and the adsorption temperature of the adsorption liquid are optimized, and the composite filler is modified, so that the recovery purity of the dimethyl ether is effectively improved, and the recovery rate of the dimethyl ether in the purge gas is also improved.

The present invention discloses an anti-interference signal control cable and a production process thereof, and relates to the field of cable technology. The production process of the present invention comprises the following steps: S1: after copper wire drawing, surface treatment and twisting, a conductor is obtained; S2: a conductor shielding layer is coated on the outside of the conductor, and an insulating layer is coated on the outside of the conductor shielding layer to obtain an insulating core wire; S3: two insulating core wires are twisted to obtain a twisted pair core; S4: the twisted pair cores are twisted to obtain a cable core; S5: a shielding layer is coated on the outside of the cable core, and a sheath layer is coated on the outside of the shielding layer to obtain an anti-interference signal control cable. The material prepared in the present application still maintains low volume resistivity, excellent electromagnetic interference shielding performance and mechanical properties under a wide temperature change.

The application discloses a composite catalyst for chemical flow casting preparation of a polyimide film and a method for preparing the polyimide film. After a polyamide acid composition is flow cast on a support to form a gel film, the polyimide film is prepared through high-temperature curing. The polyamide acid composition is uniformly mixed at normal temperature from a polyamide acid solution, a polar aprotic solvent, an imidization composite catalyst, a thermal latent catalytic type blocking agent and a dehydrating agent. The imidization composite catalyst is compounded from two types of imidization catalysts with high activity and low activity respectively. The application develops a normal-temperature (16 DEG C to 35 DEG C) chemical flow casting preparation method of a PI film by adopting the imidization catalysts with high catalytic activity and low activity to prepare the composite catalyst. Compared with a traditional low-temperature chemical flow casting method, the manufacturing energy consumption and manufacturing cost are greatly reduced.

The invention relates to the field of rubber materials, in particular to special composite modified rubber for an automobile cover tyre and a preparation method thereof. The special composite modified rubber for the automobile cover tyre is prepared from the following raw materials in parts by mass: 50-70 parts of natural rubber, 30-40 parts of composite rubber, 3-5 parts of an amino silane coupling agent, 30-50 parts of a carbon material, 15-25 parts of modified nanoparticles, 8-14 parts of a plasticizer, 3-5 parts of an activating agent, 2-4 parts of a dispersing agent, 1-1.5 parts of an antioxidant, 1-3 parts of a vulcanizing agent and 1-2 parts of a vulcanization accelerator. The prepared composite modified rubber special for the automobile cover tire has excellent wear resistance, can also keep good aging resistance, temperature-resistant stability, water resistance, skid resistance and the like, can effectively meet the performance requirements of the existing automobile field on automobile cover tire materials, and has very excellent market prospects.

The present invention relates to a high-energy storage sodium niobate-based high-entropy ceramic material and a preparation method and application thereof. The chemical molecular formula of the high-energy storage sodium niobate-based high-entropy ceramic material is (1-x)NaNbO3-x(La 0.2 Nd 0.2 Sm 0.2 G 0.2 Bi 0.2 )(Mg 2 / 3 Nb 1 / 3 )O3; where 0.01≤x≤0.09.

The present invention discloses a preparation method and application of a thermosetting polyurethane modified drainage asphalt mixture. The mixture comprises 4 to 8 parts by mass of thermosetting polyurethane modified asphalt and 92 to 96 parts by mass of mineral material; the thermosetting polyurethane modified asphalt is obtained by reacting 40 to 60 parts by mass of base asphalt, 40 to 60 parts by mass of polyurethane prepolymer and 10 to 20 parts by mass of chain extender; the polyurethane prepolymer is a polyether prepolymer, and its active group NCO content is 11 to 13%. The preparation process of the mixture is: after heating and stirring the base asphalt, the polyurethane prepolymer is added to carry out a grafting reaction, and then the chain extender is added and stirred to react to obtain a thermosetting polyurethane modified drainage asphalt, and then the mineral material and the remaining raw materials are added in sequence and mixed evenly to obtain. Based on the excellent performance of the mixture, it is used to prepare a double-layer drainage pavement, which effectively solves the influence of blockage on the functionality of the voids in the prior art, and while exerting the anti-blocking performance, it can maximize its drainage performance.

The invention belongs to the technical field of stealth materials, and particularly discloses a radar wave-absorbing repair coating capable of being rapidly cured at low temperature as well as a preparation method and application of the radar wave-absorbing repair coating. Comprising the following raw materials: 18%-22% of organic silicon resin, 3%-7% of epoxy modified organic silicon resin, 4%-8% of a diluent, 56%-64% of an absorbent, 2.5%-3.5% of a curing agent, 1.5%-2.5% of an accelerant, 1.5%-2.5% of a thermal initiator and 1%-3% of an auxiliary agent. Wherein the curing agent is formed by compounding a reaction type curing agent and a catalytic type curing agent, and the mass percent of the reaction type curing agent to the catalytic type curing agent is (2-3): (1-1.5). The radar wave-absorbing repair coating provided by the invention can realize low-temperature rapid curing, has good tensile bonding strength, impact resistance and long-term test temperature resistance, is mature and controllable in process, and completely meets the application of external field rapid repair of radar wave-absorbing coatings of various equipment.

The invention discloses a laminated aluminum electrolytic capacitor and a preparation method thereof. The preparation method comprises the following steps: S100, cutting an aluminum foil; s200, depositing on the surface of the aluminum foil through metal sputtering to form an aluminum oxide film; s300, the sputtered aluminum foil is subjected to multi-step heat treatment and quenching treatment; s400, depositing a conductive polymer on the aluminum oxide to serve as a cathode of the capacitor; s500, covering the conductive polymer with a graphite layer; s600, covering the graphite layer with a silver paste layer; s700, stacking a plurality of aluminum foils coated with the silver paste layers together to form a laminated capacitor structure; and S800, packaging and aging are carried out. The aluminum oxide film formed on the aluminum foil of the laminated aluminum electrolytic capacitor provided by the invention is uniform, flat and compact, the laminated aluminum electrolytic capacitor is small in leakage current and long in service life, and the leakage current of the laminated aluminum electrolytic capacitor cannot be obviously increased along with the increase of service time.

The present invention provides any one type of modified esterase selected from (i) to (iii) below: (i) a modified esterase containing an amino acid sequence in which at least one amino acid selected from the group consisting of (1) to (5) below is substituted with another amino acid in the amino acid sequence represented by SEQ ID NO: 1, 7 or 35: (1) S12 (2) R25 (3) S220 (4) A313 (5) S315; and (ii) a modified esterase which is a modified esterase in the modified esterase (i), one or more amino acids are further substituted (excluding the amino acid site substituted in (i)), added, inserted or deleted (excluding the amino acid site substituted in (i)), and the temperature stability and / or the tolerance to organic solvents of the esterase are further improved compared with those of the esterase composed of the amino acid sequence of SEQ ID NO: 1, 7 or 35; and (iii) a modified esterase in which amino acids other than the amino acid substituted in (i) are further substituted with another amino acid in the modified esterase in (i), the modified esterase has 70% or more identity with the modified esterase of (i), and the temperature stability and / or the tolerance to an organic solvent of the modified esterase are further improved compared with those of an esterase comprising the amino acid sequence of SEQ ID NO: 1, 7 or 35.

The invention provides a multi-mold temperature integrated control device and a control method, and belongs to the technical field of mold temperature control, the device comprises a control system, a box body, a first heating assembly, a second heating assembly, a medium loop and a medium supplementing pipeline, the box body is internally provided with a first cavity, a second cavity and a third cavity, the first cavity, the second cavity and the third cavity are sequentially arranged from bottom to top, the medium loop comprises a medium outlet pipeline, a first pump body, a distribution box, a second pump body and a medium return pipeline, the first heating assembly is used for heating a medium in the first cavity, and the second heating assembly is used for heating a medium in the second cavity; a first temperature detector is arranged in the first cavity, and a sixth temperature detector is arranged in each mold; the multiple molds share the same heat source, and the requirement for configuring an independent heating device for each mold is reduced, so that the equipment purchase cost and the energy consumption are reduced.

The utility model discloses a novel acousto-optic modulator, which relates to the technical field of integrated photonics and comprises a bottom fixing plate, an acousto-optic modulator body is fixedly mounted at the upper end of the bottom fixing plate, and a sealing cover plate is detachably mounted on the upper surface of the acousto-optic modulator body. A thin film layer is installed in the acousto-optic modulator body. According to the novel acousto-optic modulator, the film layer, the epoxy resin, the film waveguide, the ceramic limiting part and the electro-acoustic transducer are arranged, the epoxy resin and the ceramic limiting part can fix the position of the film layer and improve the temperature stability, the interruption part of the film waveguide is separated, and three groups of electrodes are uniformly dispersed; compared with the prior art, better light spot quality and output waveform can be obtained, the modulation frequency is improved, the sealing cover plate is arranged on the surface of the acousto-optic modulator, internal parts of the acousto-optic modulator body can be maintained and replaced after the acousto-optic modulator is detached, the whole acousto-optic modulator does not need to be detached, and maintenance is very convenient.

The invention discloses a vehicle temperature control method, device and equipment and a storage medium, and relates to the technical field of vehicle control. The method comprises the steps that the target air outlet temperature of an air outlet of a vehicle air conditioner is calculated, and cold and heat source control is conducted on a vehicle according to the target air outlet temperature; the actual air outlet temperature of an air outlet of the vehicle air conditioner is obtained, and the current deviation and deviation increment corresponding to the air outlet temperature are determined based on the target air outlet temperature and the actual air outlet temperature; determining a proportional adjustment coefficient, an integral adjustment coefficient and a differential adjustment coefficient according to the current deviation and the deviation increment; and performing temperature control on the vehicle based on the proportional adjustment coefficient, the integral adjustment coefficient and the differential adjustment coefficient. Compared with a traditional vehicle temperature control method, the method does not depend on opening and closing of the cold source and the heat source of the vehicle simply by detecting the cooling and heating loads in the vehicle, so that the temperature stability of the vehicle during temperature control is improved, and the problem that the interior of the vehicle is suddenly cold and suddenly hot is avoided.