73results about How to "Guaranteed power supply capacity" patented technology

The invention relates to an intelligent network video monitoring and security and protection management platform linkage system, and the system mainly comprises front-end equipment, transmission equipment, storage control equipment, and display equipment. The system employs an optical fiber to achieve the transmission of a digital video signal, has technical advantages: remote transmission, high transmission speed, and stable signals, and achieves the linkage with an alarm system, an entrance guard system, and a fire extinguishing system. The system is good in integration, facilitates the management, is not liable to cause image loss, and brings convenience to a security guard on duty at a monitoring center or a worker at the management department for timely knowing the practical condition of a site. The system achieves the arrangement of all platform ports, and extends an access client according to the needs.

The invention provides an online rapid detection device of an open-circuit battery in a storage battery pack. The storage battery pack comprises a plurality of single batteries connected to positive and negative poles of a battery charger in series and comprises a bottom layer sampling and measuring unit, a bottom layer power circuit unit, an open-circuit testing and protection unit, a bottom layer power control unit, an upper-layer operating system and application unit and an internal resistance/electric conductance testing unit. The bottom layer sampling and measuring unit and the open-circuit testing and protection unit are respectively connected to the positive and negative poles of a certain single battery, the open-circuit testing and protection unit is further connected with the bottom layer power circuit unit, both the bottom layer sampling and measuring unit and the bottom layer power circuit unit are sequentially connected to the upper-layer operating system and application unit and the internal resistance/electric conductance testing unit through the bottom layer power control unit. The online rapid detection device combines with an existing storage battery internal resistance tester, can accurately and rapidly find the open-circuit battery through online discharging of the single batteries and meanwhile does not harm testers and testing instruments and meters.

The invention discloses a power supply method and first electronic equipment. The power supply method comprises the following steps: obtaining the power supply priority of a first input interface of the first electronic equipment as a first priority, and obtaining the power supply priority of a second input interface as a second priority; when a detection result shows that the second electronic equipment is connected to the first electronic equipment through the first input interface, controlling a first power supply access which at least comprises the second electronic equipment and the first input interface to be under a condition state so as to supply power to the first electronic equipment; and when a detection result shows that third electronic equipment is connected to the first electronic equipment through the second input interface and the second priority is higher than the first priority, controlling the first power supply access to be regulated to a disconnection state from the conduction state at a first moment, and controlling a second power supply access which at least comprises the third electronic equipment and the second input interface to be under the conduction state at the first moment so as to supply power to the first electronic equipment.

The invention discloses a power grid investment distribution and decision-making method and system based on power distribution network comprehensive evaluation, and the method comprises the followingsteps: S1, constructing a county power distribution network comprehensive evaluation system, determining evaluation indexes, calculating the weights of the indexes, and calculating the scores of the evaluation indexes; S2, constructing a power grid investment distribution model for investment distribution; wherein S2 specifically comprises the steps of establishing a power distribution network investment allocation decision model of the system on the premise of considering county scale, load increase, power supply capability, economic benefit and social benefit of investment, allocating totalcapital of power distribution network construction and reconstruction to each county, and finally, taking risk factors and allocation fairness as optimization objectives, and optimizing the generatedpower distribution network investment and decision-making model to obtain an optimal decision model. The optimal combination of power grid investment projects is obtained by evaluating the investmentarea and introducing the capital constraint conditions according to the necessary factors of the power grid construction comprehensive level, and decision-making support is provided for power distribution network construction investment capital distribution.

The invention discloses a wireless charging method and device of a network camera, which are mainly formed by a wireless charging transmitting end and a wireless charging receiving end, and can control the charging state and the charging speed according to the electric quantity and the charging characteristic of a battery in the network camera. The scheme can enable the webcam to charge the internal power storage device in a wireless charging mode, guarantee its power supply ability, let the webcam leave the bondage of the electric wire completely, make the user can put the webcam in any position and any angle, achieve a kind of mobile monitoring function of any time, greatly increase the mobility and expansibility of the product, and promote the user's experience.

Disclosed is an axial-flow type thermoelectric device. A turbo type burner, a heat exchanger and a motor are adopted, a power generator is driven to be started by means of rotation of a turbine of the burner, and hot air of the burner pushes an axial power turbine in the power double-layer heat exchanger to drive the power generator. Water jackets are arranged outside the burner, a flame chute and a volute casing and on the heat exchanger and connected with a radiator to provide a heating source. Auxiliary power is provided for the power turbine besides the action of the hot air of the turbo type burner, and the utilization rate of energy is increased. The axial-flow type thermoelectric device can be used in small or confined space to serve as a heating and power generation device in a tank or armored car and the like and can also serve as a power generation and heating device independently for outdoor camping and on an island or frontier sentry and the like. The axial-flow type thermoelectric device is simple in structure and low in production cost and has promotional value.

The invention provides atomizing, humidifying and dust suppression equipment for environmental engineering site construction. The atomizing, humidifying and dust suppression equipment for environmental engineering site construction comprises a power supply connecting head and a fan; a lithium battery is mounted at the bottom of a pedestal; a power supply plug is arranged at the bottom of the lithium battery; the power supply plug is connected with a water pump control switch and a fan control switch separately through a power supply main jack; the water pump control switch is mounted on the outer end surface of the pedestal; the water pump control switch is electrically connected with a small high-pressure pump through a power line; the fan control switch is mounted on the outer end surface of the pedestal; the small high-pressure pump is fixed on the outer end surface of the pedestal; the small high-pressure pump is communicated with a water supply pipeline; water flow stored in the equipment is atomized, the atomized water drops are sprayed in a construction area at the front end of the equipment slantways, soil in the construction area is humidified, and the influence on the ambient air quality by raise dust generated by the fact that the soil in the dry state is influenced by the external air flow is avoided.

The invention discloses an air conditioner control method and system of an intermittent power supply railway vehicle. An air conditioner is controlled to be in a pre-working mode, a normal working mode and an energy-saving working mode under different conditions; in the pre-working mode, by setting and reaching a new target temperature, energy storage is achieved to the maximum extent during charging so as to maintain a comfort degree of a vehicle during subsequent operation, meanwhile, energy consumption of the air conditioner when the vehicle is not charged is reduced, and a capacity of an energy storage power supply for continuously providing necessary power for traction, braking and other key systems is prolonged; and according to available electric energy and different set thresholds,the air conditioner is in different energy-saving working modes, the necessary power supply capacity of the vehicle is further guaranteed, and meanwhile the comfort degree of passengers is guaranteed.

The invention provides an optimal breaking switch optimization method and system, and the method comprises the following steps during optimization: screening an operable main switch set, and enumerating out all switch combination states of the operable main switch set in parallel; according to the switch combination state of each operable main switch set, carrying out recombination topology on themain analysis distribution line and the corresponding contact line, and removing invalid operation modes after the recombination topology to obtain a new distribution line operation mode; calculatingtheoretical line loss values of the main analysis distribution line and the corresponding contact line after the topology recombination based on the new distribution line operation mode; and screening out a theoretical line loss minimum value, and setting a new distribution line operation mode corresponding to the theoretical line loss minimum value as an optimal operation mode. According to theinvention, the economic operation capability of the distribution network is improved, the line loss rate is reduced, the power grid operates more economically, and the purposes of loss reduction and energy conservation are achieved.

The invention relates to the technical field of transformers. The invention further discloses a transformer protection device based on the electromagnetic induction principle. The device comprises anouter box, the top of the outer box body is fixedly connected with a binding post; a ventilation opening is formed in the top of the side surface of the outer box body; an inner box body is fixedly connected to the interior of the outer box body; the outer portion of the inner box body is movably connected with a heat dissipation pipe; an oil pump is fixedly connected to the outer part of the heatdissipation pipe; a ventilating duct is formed in the inner box body; a fan is fixedly connected to the interior of the ventilating duct; a positioning rod is fixedly connected to the interior of theinner box body; through the cooperative use of the heat dissipation pipe, the oil pump, the ventilation duct and the draught fan, the heat dissipation effect of the transformer is effectively guaranteed, the heat dissipation mode of the transformer is increased, the working temperature of the transformer is guaranteed, the aging of transformer parts is avoided, the service life of the transformeris effectively prolonged, fire disasters caused by too high temperature are effectively avoided, and therefore, the safety of a circuit is protected.

The invention relates to a multifunctional cooking device, and the device comprises a housing, a control circuit board and an electromagnetic wire coil, wherein the control circuit board and the electromagnetic wire coil are located in the housing. The electromagnetic wire coil is electrically connected with the control circuit board, and the control circuit board comprises a pan detection unit and a heating control unit. The housing is provided with a panel which allows heat to pass. The panel is provided with an electric heating film which allows the magnetic field of the electromagnetic wire coil to pass, and the electric heating film is set to be corresponding to a heating region of the electromagnetic wire coil. The electric heating film is electrically connected with the control circuit board. The heating control unit sequentially controls the electric heating film and the electromagnetic wire coil to work independently through signals of the pan detection unit. Therefore, a user can place any type of pans on the device to cook food, thereby greatly improving the adaptability of an electromagnetic heating device, and changing the dependence of electromagnetic heating products on the pans.

The invention discloses a novel mechanical control circuit and mode of a frequency converter, and aims to solve the problem that a frequency converter in the prior art cannot achieve the mechanical control function by detecting the voltage of a direct-current bus. The novel mechanical control circuit comprises a power supply module and a compressor module, wherein the power supply module is connected with the compressor module to supply power to the compressor module, the power supply module comprises an external alternating-current power supply and a temperature control switch used for controlling the voltage of a direct-current bus, and the compressor module comprises a whole filter circuit, a switching power supply chip, a voltage sampling circuit, a main core, a driving and inverting circuit, a current sampling circuit, a charging circuit, a battery and temperature sampling circuit and a power supply module. According to the invention, an alternating current phase line is preventedfrom being additionally led out to serve as a control signal, a direct current bus voltage is converted into a high-low level signal which can be recognized by a single chip microcomputer through a series of voltage division and filtering, and a main core calculates the corresponding rotating speed according to the duty ratio of the signal and controls a compressor with the corresponding rotatingspeed as reference, so that the cost is reduced; and the problem of over-high cost caused by additionally arranging a battery and a charging circuit is solved.

The invention discloses a photothermal power generation system, which comprises an air compressor, a photothermal heat storage device, a photothermal air heat exchanger, an air expander and a generator. The air compressor, the air expander and the generator are coaxially connected. The heat medium pipe of the photothermal heat exchanger is connected with the heat storage medium circulation pipe ofthe photothermal heat storage device; an inlet of the cold medium pipe of the photothermal air heat exchanger and an exhaust port of the air compressor are connected, and an output port of the cold medium pipe is connected with an air inlet of the air expander; the air is pressurized by the air compressor for further heat exchange with the photothermal heat exchanger to form high temperature andhigh pressure air, which drives the operation of air expander and coaxial air compressor, and at the same time drives coaxial generator to generate electricity. The photothermal power generation system adopts a Breton cycle with air as a medium, which can greatly improve the power generation efficiency.

The invention relates to the technical field of engineering monitoring, in particular to a slope protection landslide monitoring method for civil engineering and a detection system and method. The system comprises a revetment, a data analysis center, a meteorological data module and a user early warning terminal. The power generation module driven by flowing water generates power by using rainwater, so that the power supply effect of the sensor is ensured, and wiring materials are saved; secondly, the stress sensor specially used for the slope protection is arranged, the material cost is low, the monitoring effect is good, and the slope protection can be deformed before landslide, so that the landslide can be well monitored only by monitoring the deformation condition of the slope protection; a meteorological data acquisition module is also arranged, so that a landslide risk coefficient and a rainwater coefficient of a meteorological center can be acquired in real time, and a calculation index is further provided for the landslide risk; and according to the method, the landslide risk coefficient is obtained through comprehensive calculation in combination with changes of meteorological data, humidity data and stress data for slope protection, pertinence is good, and practicability is high.

The invention relates to a line loss optimal segment point optimization design method and equipment considering space-time expansion. The method comprises the following steps: 1) obtaining basic machine account data of a power distribution network system to be optimized and operation data of power distribution network equipment in one year; 2) based on the basic standing book data, considering spatial expansion, and determining an analysis range of a to-be-optimized power distribution network system; 3) in the analysis range, based on the operation data of the power distribution network equipment in one year, time extension is considered, and optimal segmentation point optimization calculation is carried out; and 4) taking the optimal calculation result as the optimal segmented operation mode of the distribution line in the analysis range. Compared with the prior art, the method has the advantages of high reliability, high accuracy and the like.