30results about How to "Simplify engineering design" patented technology

The invention discloses a magnetic flux feedback suspension control method and device of an EMS type low-speed aerotrain. The method comprises the following implementation steps: collecting and obtaining the magnetic flux density at the position of a suspension gap through a magnetic flux induction coil a, and collecting the suspension accelerated speed and the suspension gap; calculating a suspension system control rate according to the magnetic flux density, the suspension accelerated speed and the suspension gap; generating a closed loop to control PWM signals according to the suspension system control rate, and respectively outputting the PWM signals to a PWM driving circuit to adjust the suspension force between a suspension electromagnet and a track. The device comprises a sensor set, a data collection board, a suspension controller and the PWM driving circuit, wherein the sensor set, the data collection board, the suspension controller and the PWM driving circuit are sequentially connected. The method and device have the advantages of being good in suspension control stability, high in sensitivity, low in control bandwidth, capable of improving the stability and robustness of the suspension control system, simple, easy to implement, strong in anti-jamming capability, good in expandability, and flexible in implementation.

The invention discloses a modularization multi-level photovoltaic grid connected system and a control method thereof. A three-phase six-leg topology structure is employed each leg is formed by connecting a half-bridge module SM, N assembly modules PM and one inductor L in series. Each SM is composed of two IGBT tubes T1 and T1, two diodes D1 and D2, and one capacitor C. Each PM is formed by connecting one photovoltaic assembly PV at the two ends of the capacitor C on the basis of each SM. The control method comprises maximum power tracking control, redundancy module control, voltage stabilization control and grid connected control. According to the invention, reliable working of an inverter and maximum power tracking of the photovoltaic assemblies can be realized under the condition of local shadow, a modularization multi-level structure reduces capacitor stress and an inversion output harmonic wave content, a DC transformation circuit is unnecessary, through the control method, the maximum power tracking of each PV assembly is realized, compared to a conventional array global maximum power control method, the output power is improved, and hardware investment is reduced.

The invention discloses an in-place acquisition and control public terminal with the port sampling rate being independently configured and a method. Mutually independent decoupling sampled values are provided for different types of protection control devices, each set of sampling circuits perform synchronous sampling according to a respectively independent sampling rate, and each set of sampled values are sent and shared through a corresponding network port. Sampling interruption and synchronization among different acquisition and control public terminals are realized through integral second equal interval equalization control and time-keeping based on homologous synchronization messages, dependency for an external block does not exist, and the sampling is ensured to be stable and reliable.

The invention discloses an optical fiber distribution system and a communication method thereof. The system is composed of an access unit, an extension unit and remote units; the access unit couples downlink radio frequency signals of 2G, 3G, LTE and other signal sources into the optical fiber distribution system to be converted into digital signals, and then performs framing, the digital signalsare converted into optical signals via photoelectric conversion, the optical signals are transmitted by an optical fiber to the extension unit or the remote units, and the extension unit forwards thedigital signals sent by the access unit to a plurality of remote units; and each remote unit converts the digital signals sent by the extension unit or the access unit into radio frequency signals toimplement the wireless coverage of 2G, 3G, LTE and other systems, and meanwhile converts the received uplink radio frequency signals into digital signals,and transmits the digital signals to the extension unit or the access unit. The optical fiber distribution system disclosed by the invention has the advantages of simple engineering design, high integration degree, easy implementation, monitoringavailability, good performance, low cost, etc.

The invention relates to a space foldable viscous damper. The space foldable viscous damper comprises folding units, oil cylinder type viscous damper bodies and structure connecting units, wherein each folding unit comprises a foldable rod which is hinged between a first plate and a second plate; two ends of each oil cylinder type viscous damper body are fixed between the first plate and the second plate; foldable rod connecting rods are arranged among the folding units; and the structure connecting units are connected with the foldable rod connecting rods. The space foldable viscous damper has the advantages that the oil cylinder type viscous damper bodies are integrated, and the damping and anti-seismic effect is improved. When the space foldable viscous damper is used in a frame structure, the oil cylinder type viscous damper bodies of the space foldable viscous damper are parallel to an upper beam, and therefore, the damping effect is maximum.

The invention relates to the technical field of water treatment and particularly relates to a modularized membrane capacitance deionizer which is provided with a water inlet pipe, a water outlet pipe,a power transmission line pipe and a plurality of arrayed CDI membrane component modules, wherein the bottom of each CDI membrane component module is provided with a water inlet, the top of each CDImembrane component module is provided with a purified water outlet, the water inlets of all the CDI membrane component modules are connected to the water inlet pipe, and the water purification outletsof all the CDI membrane component modules are connected to the water outlet pipe; each CDI membrane component module comprises a plurality of electrode pairs which are sequentially stacked from top to bottom; each electrode pair is composed of an anode plate layer, an anion exchange membrane layer, a screen layer, a cation exchange membrane layer and a cathode plate layer which are sequentially stacked from top to bottom; and the centers of the anode plate layer, the anion exchange membrane layer, the screen layer, the cation exchange membrane layer and the cathode plate layer in each electrode pair are provided with through holes serving as raw water channels. The modularized membrane capacitance deionizer has a simplified structure and increases the water treatment capacity.

The embodiment of the invention provides a signal transmission method and devices. In the technical scheme of deploying an indoor distribution system in the prior, in order to avoid multipath interference in signal transmission of a plurality of remote devices, the problems such as high space requirements, complicated engineering design, difficult implementation, and poor wiring design flexibilityand the like exist when deploying the plurality of remote devices; and the invention is used for solving the problems. The signal transmission method comprises the following steps: a network device determines a transmission delay corresponding to each remote aggregation device of at least one remote aggregation device; and the network device sets a standard delay according to the maximum transmission delay in the transmission delay corresponding to each remote aggregation device, wherein the difference between the standard delay and the transmission delay corresponding to the remote aggregation device is used as a buffer delay of the remote aggregation device, and the buffer delay corresponding to the remote aggregation device is used by a sending end to delay the buffer delay and then transmit a signal to a receiving end when the signal is transmitted between the remote aggregation device and the network device.

The invention discloses a preparation method of a novel bearing composite material. The preparation method comprises the following steps: adding nano-rare earth particles into graphene, uniformly mixing, raising the temperature to 80-90 DEG C within 1 minute, maintaining the temperature for 5-10 minutes, and cooling to 40-50 DEG C within 10 seconds, adding unsaturated polyester resin, an initiator, polyurethane, a low shrinkage additive, an internal releasing agent, a cross-linking agent, a thickening agent, a coupling agent, methyl stearate, ammonium chloride and glass fibers, and uniformly mixing to obtain a mixture A; laying one part of the mixture A in a mold-pressing mold, placing carbon fibers and aramid fibers on the mold-pressing mold laid with one part of the mixture A, and layingthe residual mixture A on the mold; raising the temperature of the mold-pressing mold to 60-95 DEG C, maintaining the temperature for at least 6 minutes, and applying a pressure of 900-1500 tonnagesfor at least 8 minutes to obtain the composite material. The preparation method disclosed by the invention is an integrated molding technology, and the material is light in weight and excellent in mechanical property.

The invention relates to process level equipment with longitudinal optical fiber channel receiving and transmitting functions. The process level equipment comprises a combination unit module, an optical fiber receiving and transmitting module, an intelligent terminal module, a switch quantity data memory module and a GOOSE receiving and transmitting module, wherein switch quantity acquisition of one interval can be realized and is transmitted to a process level network through GOOSE; a GOOSE command on the process level network is received to realize control over a breaker and a knife switch of one interval; digital quantity information or analog quantity information of a mutual inductor is received; data of an optical fiber channel is received; the digital quantity information or the analog quantity information and the data are synchronized and then transmitted to the process level network through an SV sampling value; the switch quantity data of the local side and the opposite site is stored in the switch quantity data memory module; and data exchange and sharing are realized in the equipment. According to the equipment, functions of an intelligent terminal, a combination unit and an optical fiber channel are integrated, the number of the process level devices is reduced, the on-site mounting size is reduced, the engineering design is simplified, and synchronization of local side data and opposite side data is realized in the equipment; and the process level equipment is easy and reliable to realize.

A shaft rod (1) having a heald mounting rail (3) glued to the rod body (2) using a space-filling adhesive (19) provided in an accommodation space (14) on the mounting rail (3) or the rod body (2) and having a greater volume than a holding section (10) formed on the rod body (2) or the mounting rail (3). Preferably, the holding section (10) and the accommodation space (14) are configured such that the two parts can only be inserted into each other with a pivoting movement. To achieve this, the holding section (10) preferably has a part (21) extending transverse to the mouth (17) of the accommodation space (14), and being wider than the mouth (17), thus extending behind a wall section or part (31, 34) of the accommodation space (14). Preferably, the accommodation space (14) and the holding section (10) are configured as hook profiles that engage each other.

The invention provides a bypass device, method and a system for a nuclear power station instrument control system, and aims at solving the technical problems of coupling and increasing test workload by controlling the bypass device through software in the prior art. The device comprises a fiend signal receiving unit, a test signal receiving unit, a bypass signal receiving unit and a conduction control unit. The conduction control unit comprises a hardware control circuit. The hardware control circuit is arranged to convert the corresponding bypass signal into the analog signal inputted to thehardware control circuit based on the bypass signal received by the bypass signal receiving unit and control circuit conduction between the test signal receiving unit and the control station in the nuclear power plant instrument control system according to whether the hardware control circuit receives the analog signal. Therefore, the bypass function and the protection logic in the control stationcan be realized by the hardware circuit without coupling, and influencing the automatic logic by the bypass logic can be avoided.

The invention provides a method for relieving viaduct vehicle congestion. Elevators for automobiles to descent a viaduct are built in the middle or on two sides of the viaduct, the automobiles running in two directions on the viaduct are allowed to descend the viaduct through the nearby elevators for descending the viaduct, so that the density of built approach spans for descending the viaduct is reduced, the automobiles can descend the viaduct midway conveniently, the number of the built approach spans of the viaduct can be substantially decreased, the engineering design is simplified, the building cost is reduced, the construction cycle is shortened, the occupied land is reduced, vehicles can descend the viaduct midway conveniently, traffic congestion on and under the viaduct as well as fuel consumption can be reduced, the utilization rate of the viaduct is increased, and the environment is protected.

The invention relates to a three-dimensional parking method for viaduct vehicle parking, in particular to a using method of a three-dimensional garage used on a viaduct. Three-dimensional parking devices which are used for parking of motor vehicles and for making the vehicles be driven on or off the viaduct rapidly and conveniently at the same time are built on the two sides of the viaduct, motor vehicle drivers can select the operations of driving on the viaduct from a lower-layer highway, driving off the upper-layer viaduct to the lower-layer highway and parking the vehicles through the devices, and therefore, time and cost which are needed to build approach bridges are greatly reduced; meanwhile, the parking spaces of common roads can be added, and the limited land resources are effectively utilized; and the three-dimensional parking method for viaduct vehicle parking is low in cost, small in floor area, high in reusing degree and applicable to various urban overhead road sections.

The present invention discloses a novel load-bearing composite and a use thereof. The composite comprises the following components in parts by weight: 30-45 parts of unsaturated polyester resin, 0.8-3parts of initiator, 8-15 parts of polyurethane, 1-2.5 parts of low shrinkage additive, 1-2.5 parts of internal releasing agent, 0.8-3 parts of cross-linking agent, 0.8-1.5 parts of thickening agent,0.1-1 part of coupling agent, 40-55 parts of glass fiber, 4-10 parts of carbon fiber, 3-8 parts of aramid fiber, 1-5 parts of graphene, 0.1-0.5 part of nanoparticles of rare earth, 0.03-0.06 part of methyl stearate, and 0.05-0.15 part of ammonium chloride. The novel load-bearing composite in the present invention is lightweight with high mechanical properties.

The invention discloses a pulling and pressing separated thin-walled steel tube concrete column. The pulling and pressing separated thin-walled steel tube concrete column comprises a lower steel tube, a fixed ring plate, a sliding ring plate, a sleeving steel tube, an end sealing steel plate, an upper steel tube and a connecting steel plate; the lower steel tube is filled with concrete; the fixed ring plate is welded to the upper portion of the lower steel tube; a free end surface of the fixed ring plate is parallel and level to a top end surface of the lower steel tube; the sliding ring plate is arranged below the fixed ring plate, and can slide up and down along the length direction of the lower steel tube; the end sealing steel plate is supported on concrete; the lower portion of the upper steel tube is connected with the end sealing steel plate; the upper portion of the upper steel tube is connected with the connecting steel plate; the upper end of the sleeving steel tube is connected with the connecting steel plate; and the lower end of the sleeving steel tube is connected with the sliding ring plate. The invention also provides a construction method of the pulling and pressing separated thin-walled steel tube concrete column. The pulling and pressing separated thin-walled steel tube concrete column is suitable for a low-layer or multi-layered civil construction structure, the lower steel tube and core concrete in the lower steel tube are stressed simply and clearly, and the lower steel tube is prevented from being buckled too early, and has features of high bearing capacity and good ductility.

The invention relates to a process layer device with the function of transmitting and receiving a longitudinal optical fiber channel, including a merging unit module, an optical fiber transceiver module, an intelligent terminal module, a switch data storage module and a GOOSE transceiver module, which can realize switch value collection at one interval, through GOOSE is sent to the process layer network, and the GOOSE command on the process layer network is received to realize the control of an interval circuit breaker and knife switch; receive the digital or analog information of the transformer, and receive the data of the optical fiber channel, after synchronization Send the SV sampling value to the process layer network; store the switching data of the local side and the opposite side to the switching data storage module, and realize the exchange and sharing of data inside the device. The device of the present invention integrates the functions of the intelligent terminal, the merging unit and the fiber channel, reduces the number of process layer devices, reduces the size of the on-site installation, simplifies the engineering design, and realizes the synchronization of the data on the local side and the opposite side inside the device. Simple and reliable implementation.

The invention belongs to the technical field of flight simulation and discloses a flight simulator emergency gear down manual operation device, which comprises a steel cable, a lifting handle connected with one end of the steel cable and a travel control mechanism connected with the other end of the steel cable. The travel control mechanism is used to simulate the travel of manual operation and the application of force. The travel control mechanism includes a rope sheave frame, a main shaft disposed inside the rope sheave frame, three stroke mechanisms, and three limit mechanisms corresponding to the three stroke mechanisms, and the three stroke mechanisms are respectively disposed on the main shaft, and the three limit mechanisms are arranged on the bottom plate of the rope sheave frame. The device meets the set-up requirement of a certain type of full mission flight simulator and makes up for the function blank of the flight simulation system.

The invention discloses an in-place acquisition and control public terminal with the port sampling rate being independently configured and a method. Mutually independent decoupling sampled values are provided for different types of protection control devices, each set of sampling circuits perform synchronous sampling according to a respectively independent sampling rate, and each set of sampled values are sent and shared through a corresponding network port. Sampling interruption and synchronization among different acquisition and control public terminals are realized through integral second equal interval equalization control and time-keeping based on homologous synchronization messages, dependency for an external block does not exist, and the sampling is ensured to be stable and reliable.

An efficient, safe, and inexpensive insecticidal cartridge is proposed, including a body, an upper diaphragm having a priming through hole, upper and lower paper diaphragms, a lower diaphragm, a smoke-forming agent disposed within the body, and an active substance providing insecticidal and / or acaricidal action, disposed within the body, interacting with the smoke-forming agent during burning or smoldering thereof. The lower diaphragm may have a number of gas-passing through holes overlaid with the lower paper diaphragm. The active substance may be dispersed within the smoke-forming agent, or may be separated therefrom by a separation diaphragm. Microcapsules and / or porous particles and / or pellets, encapsulating or being impregnated with the active substance, can be used. They can be distributed over the smoke-forming agent, or placed in a separate compartment arranged within the body being connected with the smoke-forming agent. A fume-passing channel and a filtering and gas-passing element can be mounted within the body.

The invention discloses an ultrafine tailings filling bag vacuum preloading dehydration system and a dam construction implementation method. The ultrafine tailings filling bag vacuum preloading system includes a geotechnical pipe bag, a mobile vacuum preloading integrated equipment module, PVC drainage soft belt and power supply module, which can realize the functions of slot dialysis, surface bonding, vacuum cover suction, filter sand drainage, manual movement, water gas replacement, liquid level automatic control, automatic drainage and flexible transportation, etc. Filling pipe bag dams with ultra-fine tailings in reservoirs provides a mechanized, efficient and flexible low-cost solution. Due to the high cost of materials and the lack of dam construction technology, on the premise of continuing to apply domestic flat geotechnical pipe bags, the technical bottleneck of ultra-fine tailings filling pipe bag dehydration is broken, and the construction technology of pipe bag dam construction technology in tailings Provide technical support for further promotion and application in the engineering field.

The invention discloses a modularization multi-level photovoltaic grid connected system and a control method thereof. A three-phase six-leg topology structure is employed each leg is formed by connecting a half-bridge module SM, N assembly modules PM and one inductor L in series. Each SM is composed of two IGBT tubes T1 and T1, two diodes D1 and D2, and one capacitor C. Each PM is formed by connecting one photovoltaic assembly PV at the two ends of the capacitor C on the basis of each SM. The control method comprises maximum power tracking control, redundancy module control, voltage stabilization control and grid connected control. According to the invention, reliable working of an inverter and maximum power tracking of the photovoltaic assemblies can be realized under the condition of local shadow, a modularization multi-level structure reduces capacitor stress and an inversion output harmonic wave content, a DC transformation circuit is unnecessary, through the control method, the maximum power tracking of each PV assembly is realized, compared to a conventional array global maximum power control method, the output power is improved, and hardware investment is reduced.

The invention discloses a design method of an energy router DC voltage conversion circuit, and the design method is helpful for revealing the physical nature of an energy router DC voltage conversion-dual active bridge converter, and facilitates the comprehensive derivation, analysis and simplification of the control-output dynamics of different working modes, thereby avoiding the tedious numerical calculation required by control. The DC voltage conversion circuit designed by the invention is suitable for an energy router based on extended phase shift modulation, single phase shift modulation,double phase shift modulation and triple phase shift modulation. The method is simple in calculation, is high in model precision, is easy for practical engineering application, greatly improves the design efficiency of the DC voltage conversion of the energy router, reduces the current loss, and improves the DC voltage conversion efficiency.

The invention relates to a programmable music fountain control system, which aims at providing the music fountain control system with the characteristics of strong expandability, simple programming, low cost, flexible control and the like. The technical scheme for realizing the aim of the invention is as follows: the programmable music fountain control system comprises an upper computer, a plurality of control modules and a drive module; each control module comprises a CPU, the CPU is connected with the drive module via a switch control output interface; in a plurality of control modules, each control module has a unique address, each control module RS232 is internally provided with a FLASH memory and is connected with a CAN bus interface, and a plurality of control modules are connected with a CAN bus via the CAN bus interface; at least one control module in a plurality of control modules is provided with a serial data interface connected with the CPU, the module is connected with the upper computer via the serial data interface and is a master control module, and other control modules are extension modules.

The invention discloses a preparation method of a novel bearing composite material. The preparation method comprises the following steps: adding nano-rare earth particles into graphene, uniformly mixing, raising the temperature to 80-90 DEG C within 1 minute, maintaining the temperature for 5-10 minutes, and cooling to 40-50 DEG C within 10 seconds, adding unsaturated polyester resin, an initiator, polyurethane, a low shrinkage additive, an internal releasing agent, a cross-linking agent, a thickening agent, a coupling agent, methyl stearate, ammonium chloride and glass fibers, and uniformly mixing to obtain a mixture A; laying one part of the mixture A in a mold-pressing mold, placing carbon fibers and aramid fibers on the mold-pressing mold laid with one part of the mixture A, and layingthe residual mixture A on the mold; raising the temperature of the mold-pressing mold to 60-95 DEG C, maintaining the temperature for at least 6 minutes, and applying a pressure of 900-1500 tonnagesfor at least 8 minutes to obtain the composite material. The preparation method disclosed by the invention is an integrated molding technology, and the material is light in weight and excellent in mechanical property.

The invention discloses 'a vehicle lifting machine rapidly getting on or off a bridge', and relates to the vehicle lifting machine rapidly getting on or off the bridge. The technical problem that an existing viaduct approach bridge is high in cost, few in number and different to seek is solved. According to the vehicle lifting machine rapidly getting on or off between the upper road surface and the lower road surface, efficiency of getting on or off the bridge of motor vehicles is greatly improved, and stress of ground traffic is relieved. According to the vehicle lifting machine rapidly getting on or off the bridge, the vehicle lifting machine which is used for getting on the bridge, getting off the bridge and is efficient, durable and low in cost is constructed through a large amount ofunused space between viaduct and the ground road, the multiple problems of the high cost, the long period and the large occupied area which are caused by approach bridge construction are solved, the problems are solved through the low cost and the small occupied area, and the present austere urban traffic situation is effectively improved.

The invention provides an unpowered solar energy integration hot-water system which comprises an unpowered solar heat collecting and storing device, auxiliary heating equipment, a water supplementingand distributing pipe and a master control system. The unpowered solar heat collecting and storing device comprises a solar heat collection element and a heat exchange water tank; the auxiliary heating equipment comprises a gas stove, a hot water heat storing tank, an expansion tank, a gas stove circulation pump and a water return pump; the water supplementing and distributing pipe comprises a cold water supplementing pipe and a hot water distributing pipe; the cold water supplementing pipe is divided into a first cold water supplementing pipe body and a second cold water supplementing pipe body after being connected from a cold water supply source, and the first cold water supplementing pipe body is divided into a third cold water supplementing pipe body and a fourth cold water supplementing pipe body; and the hot water distributing pipe comprises a first hot water distributing pipe body, a second hot water distributing pipe body and a third hot water distributing pipe body. By meansof the unpowered solar integration hot-water system, cold water pressure enters the system to feed cold water into the unpowered solar heat collecting and storing device, and extra power is not needed.

The invention discloses a magnetic flux feedback suspension control method and device of an EMS type low-speed aerotrain. The method comprises the following implementation steps: collecting and obtaining the magnetic flux density at the position of a suspension gap through a magnetic flux induction coil a, and collecting the suspension accelerated speed and the suspension gap; calculating a suspension system control rate according to the magnetic flux density, the suspension accelerated speed and the suspension gap; generating a closed loop to control PWM signals according to the suspension system control rate, and respectively outputting the PWM signals to a PWM driving circuit to adjust the suspension force between a suspension electromagnet and a track. The device comprises a sensor set, a data collection board, a suspension controller and the PWM driving circuit, wherein the sensor set, the data collection board, the suspension controller and the PWM driving circuit are sequentially connected. The method and device have the advantages of being good in suspension control stability, high in sensitivity, low in control bandwidth, capable of improving the stability and robustness of the suspension control system, simple, easy to implement, strong in anti-jamming capability, good in expandability, and flexible in implementation.