41results about How to "Stable and durable operation" patented technology

The invention discloses a system and a method for automatically monitoring the lake-flooding of a shallow lake; the system comprises a support platform, a power supply system, a data acquisition system, a data transmission system and a data center, wherein the support platform comprises a plurality of platforms supported by piles; the power supply system is used for supplying power for the data acquisition system and the data transmission system; the data acquisition system comprises a meteorological sensor, a hydrological sensor, a water quality sensor, a plurality of water temperature and dissolved oxygen sensors and a camera; and the data transmission system is connected with the data acquisition system, and is used for transmitting various lake-flooding information acquired by the data acquisition system into the data center with the data acquisition system. The system and the method are suitable for monitoring the algae-derived lake-flooding, which is comparatively fixed in occurrence site, high in frequency and short in duration, and difficult to catch by manual sampling or remote sensing inversion with low time resolution, of the shallow lake.

The invention provides an induction energy taking power source of an electric transmission line monitoring device. The induction energy taking power source comprises an energy taking CT, a protection unit, a rectifying circuit, an energy storage unit and an on-off control unit, wherein the energy taking CT is arranged on an electric transmission line in a coupled mode and used for obtaining electric energy from the electric transmission line, the protection unit is electrically connected with the output end of the energy taking CT, the rectifying circuit is electrically connected with the output end of the energy taking CT, and the energy storage unit is electrically connected with the output end of the rectifying circuit. The output end of the rectifying circuit is further electrically connected with the input end of the monitoring device, the energy storage unit is further electrically connected with the input end of the monitoring device, the on-off control unit is used for controlling a power supply access between the rectifying circuit and the monitoring device and a power supply access between the energy storage unit and the monitoring device to be connected or disconnected, a power circuit can be effectively prevented from being burnt by excessive absorbed energy of the energy taking CT under the large current of the electric transmission line, the heating amount of the power source is reduced, the redundant absorbed energy is effectively stored, insufficient power supply, caused by the condition that the current of the electric transmission line is a small current or the electric transmission line is powered off, of the monitoring device can be avoided, and it is guaranteed that the energy taking power source can output the stable direct current to the monitoring device.

The invention relates to a low-resistance anti-blockage vertical flow wetland structure. A rectangular pressure-bearing pool (20 to 30 meters deep and unlimited in length and depth) is parallelly divided into a water distribution ditch, a filling basin and a water collecting ditch by two separating pool ridges, wherein the separating pool ridge between the filling basin and the water collecting ditch is 300 millimeters lower than the other poll ridge and is uniformly distributed with 'V'-shaped weirs on the top, and the water distribution ditch and the water collecting ditch are communicated with adjacent process units through a water inlet and a water outlet; water distribution pipes are parallelly arranged at the bottom of the filling basin at 500 millimeter intervals on a plane at a height of 30 millimeters, the water inlet ends of the water distribution pipes pass through one separating pool ridge to be exposed in the water distribution ditch, the other ends of the water distribution pipes pass through the other separating pool ridge to be exposed in the water collecting ditch and are blocked by plugs with threaded-openings, and the water distribution pipes are provided with dense water outlet holes and are protected by a dry brickwork outer shell; a filling is filled in the filling basin to a level 100 to 150 millimeters lower than the 'V'-shaped wires, water is filled into the filling basin, plants are planted in the filling basin and the filling basin is put into operation; and water flow from the prior process unit first enters the water distribution ditch through the water inlet, then enters the water distribution pipes from the water distribution ditch, later on overcomes the resistance of the water outlet holes on the water distribution pipes to enter a filling layer, rises slowly at a constant and low speed from the filling layer to a free water layer above the filling layer, overflows from the 'V'-shaped wires and falls into the water collection ditch.

The invention relates to the field of computers, and specifically relates to a computer case capable of rapidly dissipating heat. The computer case comprises a case, an air outlet is formed on the topof the case, and a waterproof plate for shielding the air outlet is also arranged on the top of the case. An air outlet screen plate is connected to the outer ring of the waterproof plate, an air draft shaking heat dissipation assembly is installed at the top in the machine box, a filtering cavity is formed in the bottom of the machine box, a filtering net is arranged in the filtering cavity, anannular cooling cavity is formed in the outer side of the filtering cavity, and a plurality of lateral air inlet pipes are further arranged in the cooling cavity in the circumferential direction. According to the computer case, heat in the case can be rapidly conducted out, the waterproof and dustproof effects are good, and durable and stable operation of a computer is guaranteed.

The invention provides a large-scale battery management system comprising at least one voltage collection circuit, a temperature collection circuit, a current collection circuit and a central control circuit MCU; the voltage collection circuits are used for collecting voltage of each single battery in a battery pack; the temperature collection circuit is used for collecting working temperature of the battery pack; the current collection circuit is used for collecting charging and discharging current information of the battery pack; the output ends of the voltage collection circuits are electrically connected with the central control circuit MCU; the output end of the temperature collection circuit is electrically connected with the central control circuit MCU; the current collection circuit is electrically connected with the central control circuit MCU; the voltage collection circuits are electrically connected in a daisy chain mode. Large-scale batteries can be effectively monitored and managed, the reliability is high, the large-scale batteries can operate durably and stably, the system structure is simplified, the size is reduced, and the use cost can be lowered.

The invention relates to a stirrer of a biogas fermentation tank. The stirrer comprises a transmission device and a stirring device, wherein the transmission device is mounted at the top of the fermentation tank; the stirring device is mounted in the fermentation tank; the transmission device consists of a motor speed reducer and a rotary gear box; the stirring device consists of a stirring shaft,stirring paddles and a shell breaking frame; the stirring device and the transmission device are fixedly connected through a coupling; the rotary gear box consists of a box body, a rotary bearing anda gear shaft which are mounted in the box body; a gear ring of the rotary bearing meshes with the gear shaft; a shaft head of the gear shaft is connected with an output shaft of the speed reducer; and the shell breaking frame consists of a supporting rod and snakelike grid bars. The device has the advantages of simple structure, stable operation and long service life, the problems existing in theexisting stirrers of biogas fermentation tanks are solved, the long-term stable production of the biogas fermentation tank is guaranteed, and the gas production rate of the fermentation tank is improved.

The invention discloses a monitoring device of an electric power communication cabinet based on TCP / IP (Transmission Control Protocol / Internet Protocol) communication. The monitoring device comprises a source supply unit, a monitoring unit and a transmission unit both which are respectively connected with the source supply unit; electricity supplied by an interchanger POE (Power Over Ethernet) is used as main power supply, Ethernet is used as a data transmission passageway, and all sensing nodes are based on an embedded data converging platform composed of single chips, collected temperature and current information are converted into digital signals, and data are transmitted to monitoring software through TCP / IP protocols. Meanwhile WEB pages are built in the monitoring device and display currently collected temperature data and operation current data, the monitoring software cannot be fixed to some host, monitoring data on each node can be acquired when any networked host operates the software, a server isn't required to be specially erected, and the monitoring device is simple in arrangement and convenient to use.

The invention discloses a chain plate type baking tunnel furnace comprising a case, and a conveying device and a heating device which are arranged in the case. The conveying device comprises a conveying chain, a chain plate belt and a drive sprocket. The chain plate belt comprises a plurality of chain plates comprising elongated main plates and inclined plates formed by bending the edges of the front ends of the main plates at the certain angles. The inclined plates extend below the tail ends of the front chain plates. The furnace further comprises a material fetching device arranged at the outlet of a baking channel; the material fetching device comprises a scraping blade pivoted to the case in a manner of vertical overturning and a tension mechanism, and the tension mechanism is used for controlling the scraping blade to overturn between a first position fitted to the chain plates and a second position separated from the chain plates. The chain plates are ingenious in structural design, the clearances between the chain plates are reduced, a baking plate is omitted, and the manufacture cost can be saved; by arranging the material fetching device, the producing efficiency can be improved, and the chain plate type baking tunnel furnace has the advantages of stable operation.

The invention provides a wireless charging based sensor network anchor point selection method, which comprises the steps of S1, acquiring anchor point data one by one according to a preceding anchor point sequence and sensor storage battery residual electricity quantity of neighbor nodes of a set anchor point by mobile acquisition equipment; S2, sorting the sensor storage battery residual electricity quantity values so as to form a list S(i), wherein i represents the number of sensor nodes; S3, calculating the access path length of the mobile acquisition equipment for accessing to the sensor node corresponding to each element in the list S(i), judging a size relation between the access path length and set path threshold length Ltsp, selecting a sensor whose access path length is equal to the set path threshold length Ltsp, and setting the selected sensor to be an anchor point to which the mobile acquisition equipment accesses the next time. The method provided by the invention can effectively improve the fairness of data collection and reduce data delay, the maximum node access number of a sensor network is guaranteed, and sustained stable running of the sensor network is ensured. In addition, charging for sensor nodes which do not required to be charged can be avoided, and he running efficiency of wireless charging is improved.

The invention provides a hierarchical starting mining intrinsic safety power supply which at least comprises a DC / DC (direct-current) power supply unit, a safety grid circuit, a storage battery, a power supply control circuit, a storage battery power supply control circuit, a voltage comparison unit and a control unit. The DC / DC power supply unit is used for receiving direct current and boosting or reducing voltage of the direct current, the voltage comparison unit is used for acquiring the voltage of the storage battery and comparing the voltage with set reference voltage, the DC / DC power supply unit is electrically connected with the safety grid circuit through the power supply control circuit, the storage battery is electrically connected with the safety grid circuit through the storage battery power supply control circuit, an input end of the voltage comparison unit is electrically connected with the storage battery, an output end of the voltage comparison unit is electrically connected with the DC / DC power supply unit, the DC / DC power supply unit supplies power for the control unit, the control unit outputs control signals to the power supply control circuit and the storage battery power supply control circuit and is further electrically connected with a positive electrode of the storage battery. The hierarchical starting mining intrinsic safety power supply can avoid false triggering caused by high current in starting of the intrinsic safety power supply, and stable and persistent operation of the intrinsic safety power supply can be guaranteed, so that the on-load capacity of the intrinsic safety power supply is enhanced.

The invention relates to an inductive power-taken high-voltage power verifying displayer and aims to solve the problem that the conventional high-voltage power verifying display device is deficient. The inductive power-taken high-voltage power verifying displayer comprises a passive induction power-taken part, wherein the passive induction power-taken part is connected to a reception controlling module; the reception controlling module is connected to a trigger displayer; the passive induction power-taken part, the reception controlling module and the trigger displayer are connected to an inductive power-taken device; the inductive power-taken device is connected with a storage battery rectifying circuit; the storage battery rectifying circuit is connected with a storage battery; the passive induction power-taken part is mounted on high-voltage electrical equipment; the inductive power-taken device is a plate condenser positioned in an alternating electric field. According to the invention, the mounting and maintenance are simple and convenient, the normal operation of a power network cannot be influenced, a power source doesn't need to be added, and the inductive power-taken high voltage power verifying displayer is suitable for working environment indoors and outdoors.

The invention provides a time series data prediction method and device and a computer readable storage medium, and relates to the technical field of computers. The method comprises the steps of receiving time sequence data of a to-be-tested user; inputting the time sequence data into a target classification network of the trained time sequence mode so as to enable the target classification networkto perform dimension reduction compression on the time series data to obtain corresponding derivative feature data, performing target classification on the derivative feature data to obtain a prediction probability of a target classification result corresponding to the time series data, and outputting the prediction probability; and determining a test result of the to-be-tested user based on theprediction probability. According to the embodiment of the invention, the prediction probability of the obtained target classification result of the application time point is ensured to be consistentwith the distribution of the target classification result of the modeling time point as much as possible, so that a strategy constructed based on the trained time sequence model can run more stably and enduringly, and the actual application requirements are better met.

The invention relates to a plant essential oil-containing lyocell fiber and a preparation method thereof. The preparation method comprises the following steps that firstly, plant essential oil and nano inorganic powder (subjected to hydrophobic modification treatment) are uniformly mixed to prepare a plant essential oil / nano inorganic powder mixture; then the plant essential oil / nano inorganic powder mixture is mixed with a functional mother liquor base solution (containing cellulose and cellulose acetate) by adopting a screw extruder to prepare a plant essential oil functional mother liquor; finally, the plant essential oil functional mother liquor is mixed with a lyocell spinning solution (the viscosity difference of the plant essential oil functional mother liquor and the lyocell spinning solution is not more than 1000Pa. S), and spinning is carried out to prepare the plant essential oil-containing lyocell fiber; the finally prepared fiber mainly consists of a lyocell fiber body, nano inorganic powder and plant essential oil; and the plant essential oil is attached to the nano inorganic powder, the nano inorganic powder is dispersed in the lyocell fiber body, and the lyocell fiber body is composed of cellulose and cellulose acetate. The loss amount of the plant essential oil in the forming process is small, and release of the plant essential oil can be effectively slowed down.

The invention discloses a remote tracking control type safety box. The remote tracking control type safety box comprises a control center, a safety box body, an electromagnetic lock, a smoke alarm, a sound alarm, a fall handle, a high-voltage defibrillator, a master control board and a sub control board. The electromagnetic lock, the smoke alarm, the sound alarm, the fall handle and the high-voltage defibrillator are arranged on the safety box body. The master control board and the sub control board are arranged in the safety box body. The master control board and the sub control board are each provided with a DC-DC / LDO power conversion structure. The master control board is connected with a 7.4 V charge and discharge management structure through the corresponding DC-DC / LDO power conversion structure. The sub control board is connected with a 12 V charge and discharge management structure through the corresponding DC-DC / LDO power conversion structure. The remote tracking control type safety box has more protection measures and more accurate positioning and locking capacity; meanwhile, the remote tracking control type safety box is opened through remote control, so that the box opening difficulty of criminals is further increased, and the use safety of the remote tracking control type safety box is better guaranteed.

The invention provides a gradient complementation type electric-thermal balance power storage and charging system and method. The system comprises a renewable energy inlet side, a flow battery stack,a power grid inlet side, a current conversion device, an electric power outlet side, a storage battery stack, a flow battery liquid storage tank, and the like. In a working process, the system performs gradient complementation of electric power to achieve stable and continuous output, and internal and external thermal balance is achieved, thereby being energy-saving and efficient. By means of thecooperative operation of a flow battery and a storage battery, when the storage battery is deactivated, resulting in poor charge state or even halt, the flow battery is used as a controllable supplementary power storage unit to discharge the system to perform the gradient complementation so as to maintain the continuous and stable supply of the electric power of a power supply side. Meanwhile, thesystem uses an electrolyte circulating pipeline of the flow battery as a thermal balance pipeline, the internal thermal balance of the system is achieved by the flow of the electrolyte among the storage battery stack, the current conversion device, the flow battery stack and the liquid storage tank, and the thermal adjustment between the internal temperature difference of the system and the external environment temperature difference is achieved by the deployment of the electrolyte between a heat preservation tank of the liquid storage tank and a cooling tank.

The invention discloses a method for calculating cavitation performance of a large-scale low-lift pump device, and belongs to the technical field of hydraulic engineering pump stations. The method is mainly characterized by comprising the following steps: introducing pump device anti-cavitation safety coefficient which comprehensively considers influence factors such as water level of a water inlet tank, worst working condition points of pump device cavitation performance, water pump impeller center elevation, head loss of a water inlet runner, water pump cavitation performance and the like; taking the pump device anti-cavitation safety coefficient as a quantitative evaluation index of anti-cavitation performance of the large-scale low-lift pump device; and calculating the smallest anti-cavitation safety coefficient of the pump device according to three worst working condition points of pump device cavitation performance and the cavitation performance of each blade setting angle of the water pump. The method provided by the invention is clear, high in operability, capable of accurately calculating the cavitation performance of the pump device, can be used for quantitatively evaluating the cavitation performance of the designed pump device, and also can be used for selecting a proper model water pump and calculating reasonable water pump center elevation according to the anti-cavitation safety coefficient required by the pump device.

The invention discloses a power supply system used for a fuel driven patrol car. The power supply system comprises electric equipment, an electric generator, an adjuster and an automobile storage battery, and is characterized by further comprising a controller, an additional storage battery and an alarm device; two power ports of the controller are connected with the power end of the automobile storage battery and the power end of the additional storage battery respectively to form a charging loop; the power end of the additional storage battery is connected with the electric equipment through the output power port of the controller to form a discharging loop; the controller can carry out switch-off or switch-on control on the charging loop and the discharging loop respectively; and the alarm device is connected with the controller. The invention also discloses a control method of the power supply system. According to the power supply system and the control method, the energy use efficiency of the fuel driven patrol car can be improved.

Disclosed is a high-adsorbability nanofiber preparing tool. The high-adsorbability nanofiber preparing tool comprises a mixing device, a melt extrusion machine and electrostatic spinning machines, wherein the mixing device comprises a main mixing tank, a lower fixing plate, lower fixing blocks, auxiliary mixing tanks, upper fixing plates, upper fixing blocks, connecting support rods, support legsand connecting pipes; the melt extrusion machine comprises a base, cushion blocks, a control cabinet, an extruding barrel, a heating pipe, a first support, a second support, an extruding screw, a beltpulley, a transmission motor, a belt, a belt pulley cover, a hopper, a feeding pipe, a cooling fan, cooling branch pipes, an air inlet pipe and an extruding pipe; every electrostatic spinning machinecomprises a housing, bottom legs, an intruding pipe, a needle, a power supply, a limiting roller, a separating plate, an air flue filtering mesh, a negative-pressure fan, a rotating device, a supportbottom plate and a rotating motor. The high-adsorbability nanofiber preparing tool improves the mixing device, the melt extrusion machine and the electrostatic spinning machines, thereby improving the overall preparation efficiency and achieving high system operation stability.

The invention discloses an underground fluid gas extraction device and process, and belongs to the field of underground water extraction. The underground fluid gas extraction device belongs to a device for extracting underground water from an extraction well by using a gas extraction mode. The underground fluid gas extraction device provided by the invention has the advantages that compressed air is used as power; control elements are arranged in safe positions of the ground surface; underground valves are all mechanical automatic values; underground equipment does not need electrification; various underground adverse conditions are overcome; the explosion risk caused by underground high-concentration unidentified gas is avoided; in addition, the structure is simple; and the equipment cost is low.

An electrospinning machine for preparing nanofibers with high adsorption performance, including a shell, a foot, an extrusion tube, a needle, a power supply, a limit roller, a partition, an air duct filter, a negative pressure fan, a rotating device, a support bottom plate, The motor; the extrusion tube is arranged on the top surface of the casing; the needle is arranged at the bottom of the extrusion pipe; the power supply is arranged on the outer wall side of the casing; the limit roller is arranged in the fiber outlet; One-layer board, second-layer board, second-layer bearing, second-layer rotating ring, third-layer board, third-layer bearing, third-layer rotating ring, fourth-layer board, four-layer bearing, four-layer rotating ring, the bottom plate of the bracket is set on the bottom surface of the rotating device ; The motor is arranged on the bottom surface of the shell, and one end of the motor is vertically and fixedly connected to the bottom plate of the bracket. The invention can accurately drop the fiber filaments onto the rotating device, improve the winding stability of the spinning fiber filaments, prevent the fiber filaments from breaking, and have strong system operation stability.

The invention provides a dry micro-hot gas filtering system. The dry micro-hot gas filtering system comprises an input subsystem, an output subsystem and two heating filtering apparatus of the same structure; the input end of the input subsystem is connected with the output end of an air compressor, the output end of the input subsystem is separately communicated with the two heating filtering apparatuses, the output ends of the two heating filtering apparatuses are separately communicated with the input end of the output subsystem, and the output end of the output subsystem is used for outputting air to an air application device; the two heating filtering apparatuses works alternatively; and by virtue of the structure, the compressed air provided by the compressor can be continuously andstably purified and dried, so that the dry and clean air can be provided for all air application devices of a ship, and the air application devices of the ship can be operated persistently and stably.

The invention relates to a cloud platform supporting fusion network service and an operating method thereof. The cloud platform is provided with a plurality of hardware and software resources, and is connected with three access networks of a telecommunication network, an interconnection network and a broadcasting and television network respectively through three core networks of operators of the three networks and the corresponding communication protocol to allow platform users (including the operators of the three networks or service providers and the like) to rent platform resources according to respective requirements to deploy respective services and operational capabilities. The cloud platform has a layered structure, and is provided with a platform management layer, a service execution layer, a resource virtualization and management layer and a hardware resource layer respectively from top to bottom, and in an interactive mode among the layers, an upper-layer module uses the function provided a lower-layer module in a mode of interface call. The cloud platform supports the platform users to adjust the rent resources dynamically and conveniently according to actual requirements, and simultaneously, provides the access capability on the resources of the three networks and convenience for the development and operation of the fusion network service by the platform users.

A Modbus protocol conversion device based on 3G Internet access belongs to the protocol conversion device in the field of network technology. Aiming at the unstable problem of 3G dial-up Internet access and ensuring the correctness and transparency of data transmission during Modbus protocol conversion, the present invention adopts a Modbus protocol conversion device based on 3G Internet access. The hardware architecture requires remote servers, protocol conversion devices and data acquisition equipment. The 3G script completes the dial-up PPP automatic detection network, and automatically redials when the network is disconnected or the ping fails. The data communication between the protocol conversion device and the server adopts the Modbus TCP protocol, and the data communication between the protocol conversion device and the data acquisition equipment adopts the Modbus RTU protocol. Data transmission realizes transparent transmission, and the protocol conversion device can quickly detect abnormal disconnection of the network and automatically reconnect, ensuring stable and durable operation, and can be used in more environments.

The invention discloses an online TOC (total organic carbon) detection device for sewage treatment, relates to the technical field of wastewater detection devices, and aims to solve the problem of inconvenience in use in the prior art. The online TOC detection device comprises a placement box, supporting shafts which are symmetrically arranged are rotatably connected to the placement box, and a clamping plate is fixedly connected to one side of each supporting shaft; an execution box is fixedly connected between the two clamping plates, connecting devices are fixedly connected to the two ends and one side of the execution box, a motor is fixedly connected to one side of the placement box, the output end of the motor is fixedly connected with one supporting shaft, and a water pump is fixedly connected to one side of the placement box; and the output end of the water pump is connected with a water inlet pipe. The online TOC detection device is simple in structure and convenient to use, can perform circulating sewage detection, achieves automatic sewage detection, reduces personnel investment, reduces the working intensity, increases the detection frequency, ensures that water quality can be rapidly and stably detected, and facilitates detection.

The invention provides an insulator leakage current monitoring system used for a laboratory. The system comprises a current acquisition unit, an isolation transmission unit, a data acquisition unit and a monitoring host, wherein the current acquisition unit is used for collecting an insulator leakage current; the isolation transmission unit is connected to an output terminal of the current acquisition unit; the data acquisition unit is connected to the isolation transmission unit; and the monitoring host is connected to the data acquisition unit. The output terminal of the current acquisition unit is provided with a protection unit. On one hand, the leakage current on an insulator surface can be accurately detected, which is good for reliably analyzing a work state of the insulator; on the other hand, the monitoring system can be effectively protected, the monitoring system is guaranteed to be operated durably and stably and a service life is prolonged.

The invention relates to a pump shaft structure. The pump shaft structure comprises a pump shaft and a motor shaft arranged in the pump shaft in a sleeve mode, a key groove is formed in the motor shaft, a key is arranged in the key groove, and a fixing device sequentially penetrates through the pump shaft, the key and the motor shaft to fix the pump shaft and the motor shaft together. the motor shaft, screws, the pump shaft and the key provided in the pump shaft structure are all standard parts except the pump shaft, the motor shaft, the screws and the key are standard parts, and the pump shaft is made of stainless steel, the motor shaft is embedded in a pump shaft end hole, the motor shaft and the pump shaft are fixed through the key in the key groove in the shaft, and the pump shaft, the motor shaft and the key are fastened together through the screws. According to the pump shaft structure, compared with a traditional shaft structure, the shaft structure is safer and more reliable, convenient to machine and disassemble, stable in operation and high in universality, the total length of the shaft can be effectively shortened through the structure, operation is stabler and lasting, cost is reduced, and meanwhile the service life of the whole pump and quick-wear parts of the pump is prolonged.

The invention provides a hierarchical starting mining intrinsic safety power supply which at least comprises a DC / DC (direct-current) power supply unit, a safety grid circuit, a storage battery, a power supply control circuit, a storage battery power supply control circuit, a voltage comparison unit and a control unit. The DC / DC power supply unit is used for receiving direct current and boosting or reducing voltage of the direct current, the voltage comparison unit is used for acquiring the voltage of the storage battery and comparing the voltage with set reference voltage, the DC / DC power supply unit is electrically connected with the safety grid circuit through the power supply control circuit, the storage battery is electrically connected with the safety grid circuit through the storage battery power supply control circuit, an input end of the voltage comparison unit is electrically connected with the storage battery, an output end of the voltage comparison unit is electrically connected with the DC / DC power supply unit, the DC / DC power supply unit supplies power for the control unit, the control unit outputs control signals to the power supply control circuit and the storage battery power supply control circuit and is further electrically connected with a positive electrode of the storage battery. The hierarchical starting mining intrinsic safety power supply can avoid false triggering caused by high current in starting of the intrinsic safety power supply, and stable and persistent operation of the intrinsic safety power supply can be guaranteed, so that the on-load capacity of the intrinsic safety power supply is enhanced.

The invention provides a multifunctional intelligent telemetering terminal based on micro-power consumption long-distance wireless connection, and relates to the field of telemetering terminals. The multifunctional intelligent telemetering terminal based on micro-power consumption long-distance wireless connection comprises a box body, a solar photovoltaic panel is arranged at the top of the box body, a control mainboard is arranged in the middle of the bottom end in the box body, and an external connector interface is formed in the left side of the bottom end of the control mainboard; standby interfaces are formed in the middle and the right side of the bottom end of the control mainboard, a mounting block is fixedly connected to the upper portion of the rear end of the box body, a sliding groove is formed in the bottom in the mounting block, a threaded rod is transversely connected to the middle of the mounting block in a threaded mode, and a hanging block is arranged in the sliding groove in a sliding mode and fixedly connected to the middle of the front end of a mounting plate. The telemetering terminal is convenient to overhaul through the sliding groove and the hanging block, new equipment can be installed on the telemetering terminal through the standby interface, wireless long-distance transmission can be well achieved through Bluetooth and GPRS equipment, and the telemetering terminal is worthy of being popularized vigorously.

The invention provides a large-scale battery management system comprising at least one voltage collection circuit, a temperature collection circuit, a current collection circuit and a central control circuit MCU; the voltage collection circuits are used for collecting voltage of each single battery in a battery pack; the temperature collection circuit is used for collecting working temperature of the battery pack; the current collection circuit is used for collecting charging and discharging current information of the battery pack; the output ends of the voltage collection circuits are electrically connected with the central control circuit MCU; the output end of the temperature collection circuit is electrically connected with the central control circuit MCU; the current collection circuit is electrically connected with the central control circuit MCU; the voltage collection circuits are electrically connected in a daisy chain mode. Large-scale batteries can be effectively monitored and managed, the reliability is high, the large-scale batteries can operate durably and stably, the system structure is simplified, the size is reduced, and the use cost can be lowered.

The invention discloses a wave attenuation system based on the Internet of Things. The system comprises a plurality of regional wave attenuation networks, wherein each regional wave attenuation network comprises wave attenuation equipment and an equipment control device; the equipment control device comprises a power supply module, a sensor module, an exception detection module, a master control module, a communication module and a scheduling control module, wherein the sensor module collects and uploads water level and wave height data and wave attenuation equipment operation data detected bythe exception detection module, and receives and outputs a scheduling control instruction to drive the wave attenuation network to operate; the server is used for receiving and displaying data, and judges whether wave attenuation equipment has exceptions and early warnings or not; in addition, the scheduling control instruction is generated to the corresponding wave attenuation network; a cloud platform is used for pre-establishing a wave attenuation equipment capability evaluation index to obtain an equipment scheduling scheme; and the required wave attenuation equipment scheme is selected and sent to the server. By use of the system, the scouring of wave for a protection shore can be reduced, the safety performance of shore protection engineering and the protection region of the shore protection engineering is protected, wave attenuation performance is improved, and an intelligent wave attenuation function is realized.