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87results about How to "Run in time" patented technology

Air-conditioner starting control method and system, starting device and air-conditioner

The invention relates to an air-conditioner starting control method and system, a starting device and an air-conditioner. The control method includes the steps that after a starting mode instruction is received, whether a refrigerant needs to be preheated or not is determined according to the starting mode information and/or the heat exchange tube temperature of an indoor unit heat exchanger (11), and if yes, a liquid-state refrigerant at the liquid-state refrigerant circulating side of the indoor unit heat exchanger (11) is started to be preheated; a reversing valve (4) is controlled to reverse and switch the refrigerant to be in a heating mode after heating is conducted by a first preset time; and an indoor fan (12) is controlled to operate when the refrigerant temperature meets the requirements. By the adoption of the control method, the liquid-state refrigerant at the liquid-state refrigerant circulating side of the indoor unit heat exchanger can be preheated before being reversed and switched to be in the heating mode through the reversing valve, the refrigerant temperature can meet the starting conditions of the indoor fan within a short time in reversing or after reversing of the reversing valve, high voltage protection is avoided, and therefore normal operation of a unit is guaranteed, and the heating comfort is improved.
Owner:GREE ELECTRIC APPLIANCES INC

Copper consumption minimization-based axial magnetic field flux-switching fault-tolerant motor fault-tolerant control method

ActiveCN106712601AIncrease profitNon-faulted phase current optimizationTorque ripple controlElectric motor controlPhase currentsMotor drive
The invention discloses a copper consumption minimization-based axial magnetic field flux-switching fault-tolerant motor fault-tolerant control method. With the copper consumption minimization-based axial magnetic field flux-switching fault-tolerant motor fault-tolerant control method of the invention adopted, an axial magnetic field flux-switching fault-tolerant motor can operate under a fault-tolerant state when a single-phase open-circuit fault occurs on the axial magnetic field flux-switching fault-tolerant motor, and the copper consumption of the motor can be minimized. An inverter adopts a three-phase four-bridge alarm fault-tolerant topology and judges a fault state according to phase current; when operation is normal, the inverter operates under a three-phase three-bridge arm mode, an axial magnetic field flux-switching fault-tolerant motor control system adopts an SVPWM (Space Vector Pulse Width Modulation) control strategy according to which id=0, so as to distribute d-axis current and q-axis current; and when a single-phase fault occurs, fault-tolerant control is performed, the inverter operates under a two-phase three-bridge arm mode, and magnetizes the motor through controlling the current of a fault-tolerant winding, so that the overall copper consumption of the motor can be minimized. According to the copper consumption minimization-based axial magnetic field flux-switching fault-tolerant motor fault-tolerant control method of the invention, under the single-phase open-circuit condition, and with minimizing the copper consumption adopted as an optimization objective, the motor is switched from a fault state to a fault-tolerant control state, and therefore, the reliability of a motor driving system and the operation efficiency of the motor under the fault-tolerant state can be effectively improved.
Owner:SOUTHEAST UNIV

Power asset supervision method and supervision system based on electronic identity card

The invention discloses a power asset supervision method and a power asset supervision system based on an electronic identity card. The system comprises electronic identity card identification equipment (1), electronic identity card generating equipment (6), an electronic identity card (7), a database server (2) for storing fixed asset data, an application server (3) for calling the data stored by the database server (2), a wireless network (4), and a personal computer (PC) client (5), wherein the electronic identity card identification equipment is controlled to emit a microwave query signal; the electronic identity card synthesizes the microwave query signal and the data information in the electronic identity card into a whole and returns the whole to the identification equipment; the identification code, processed by the identification equipment, of the electronic identity card is sent to the application server; and the application server retrieves the database of the database server, returns the retrieval result to the identification equipment for resolving, and reveals the information of assets to users. According to the method and the system, the highest limit application ofthe assets can be effectively improved, the reasonability of working management is furthest ensured, the work efficiency and the work quality are improved, and the running and maintenance costs of enterprises are reduced.
Owner:STATE GRID CORP OF CHINA +1

Method for realizing exact reconciliation of telecommunication multisystem in transaction scene of 7*24 h

The invention discloses a method for realizing exact reconciliation of a telecommunication multisystem in the transaction scene of 7*24 h. The systems carry service items respectively, a reconciliation control server is arranged, all systems are respectively connected to the reconciliation control server, transactions among the systems are all forwarded through the reconciliation control server and the reconciliation control server controls and manages the transaction reconciliation among the systems; the reconciliation control server comprises a transaction management module, a reconciliation cycle management module, a transaction flow module and a reconciliation management module, wherein the transaction management module stores and processes information of various systems and a system forwarding rule, the reconciliation cycle management module establishes and manages a reconciliation cycle, the transaction flow module realizes specific transaction actions and the reconciliation management module performs a reconciliation operation. The invention realizes the exact reconciliation function, is timely and exact, does not affect the 7*24h of operation of the system, automatically and instantaneously performs the reconciliation after the reconciliation cycle finishes and is convenient for finding out problems as soon as possible.
Owner:LINKAGE SYST INTEGRATION

Power assembly fault recording and diagnosis system and method

ActiveCN108614167AIn time for operationRun in timeElectrical testingComputer moduleEngineering
The invention discloses a power assembly fault recording and diagnosis system and method. The system comprises a power assembly and a control circuit; a main control unit obtains signals collected bya voltage sensor, a temperature sensor and a current sensor in real time through a sampling unit; the control circuit includes the main control unit as well as the sampling unit, an interface unit, and a fault storage unit which all are connected with the main control unit; when detecting that the power assembly fails, the main control unit stores the voltage, temperature and current data of the power module before and after the malfunction of the power module, fault state information and input PWM pulse data to the fault storage unit; and an external upper computer accesses the fault storageunit through the interface unit and the main control unit, and reads out the voltage, temperature, and current signal waveforms before and after the malfunction, the fault state information and the input PWM pulse data so as to analyze, locate, and troubleshoot the fault of the power assembly. With the system and method of the invention adopted, the technical problem of the failure to reproduce the conditions of a fault time point and accurately locate the cause of the fault of the power assembly of a converter when the power assembly of the converter fails can be solved.
Owner:ZHUZHOU CRRC TIMES SEMICON CO LTD

Emergency fire extinguishing device based on intelligent system

The invention discloses an emergency fire extinguishing device based on an intelligent system. The emergency fire extinguishing device comprises a housing, wherein a working cavity is formed in the housing; a water storage container is fixedly arranged on the inner wall of the rear side of the working cavity; and a water storage cavity is formed in the water storage container. According to the emergency fire extinguishing device, a sealing push block is adopted, the air pressure of the water storage cavity is increased through the up-down movement of the sealing push block, and the pressure during water spraying is guaranteed; a water stop block is adopted, so that water stored is prevented from flowing out when the device moves; and an air pressure push plate is adopted, and the air pressure push plate moves rightwards in time when the air pressure of the water storage cavity is reduced, so that the subsequent timely operation of a pressurizing assembly is guaranteed, and the currentsituation that most of existing automatic spraying devices are fixed, in places with particularly serious fire disasters, a single automatic spraying device cannot play a role in extinguishing fire intime, and the adjacent automatic spraying devices cannot play a role in assisting due to the fact that the distance is too long is avoided.
Owner:ZHUHAI DAHENGQIN TECH DEV CO LTD

Oil field water injection automatic control system and method thereof

The invention discloses an oil field water injection automatic control system and a method thereof. The oil field water injection automatic control system comprises an oil field water injection automatic control device, a frequency converter, motors, water injection pumps and a pressure sensor, and is characterized in that the motors comprise a permanent magnet synchronous motor and two asynchronous motors, and the permanent magnet synchronous motor and the two asynchronous motors are connected with the corresponding water injection pumps respectively; and the oil field water injection automatic control device acquires pipeline pressure signals through the pressure sensor, and carries out calculation on the pipeline pressure signals, thereby controlling switching and speed regulating operations of the permanent magnet synchronous motor and the asynchronous motors, and realizing smooth and steady water pressure of oil field water injection. The system and the method disclosed by the invention can effectively solve a technical problem that an existing oil field water injection control system cannot track variations of production parameters timely, which not only causes serious throttling waste, but also results in production accidents because of inappropriate regulation of operating parameters. The oil field water injection automatic control system is good in real-time performance of water injection amount regulation and high in system reliability and safety, reduces noises, saves energy, reduces emission, and improves the work efficiency.
Owner:ZHUZHOU NAT ENG RES CENT OF CONVERTERS

Redundancy control method, device and system, computer equipment and storage medium

PendingCN113867129AAvoid confictEnables non-disruptive redundant switchoverSafety arrangmentsControl engineeringMaster controller
The invention discloses a redundancy control method, device and system, computer equipment and a storage medium. The method comprises the following steps of: information synchronization is executed after the master controller and the slave controller are electrified and started; then the configuration logic of the slave controller and the configuration logic of the master controller operate synchronously, and all protocol micro-services in the slave controller enter a to-be-activated state; and when the master controller has a software fault and / or a hardware fault, the slave controller takes over the control right to complete redundancy switching. According to the invention, after the master and slave controllers are powered on and started, information synchronization is carried out, so that guarantee is provided for undifferentiated switching; wherein the configuration logic of the slave controller and the configuration logic of the master controller run synchronously, and the protocol micro-service in the slave controller enters a to-be-activated state to block the request, so that the shared bus conflict is avoided under the condition that the master and slave configuration logic is synchronous, and undifferentiated and interference-free redundancy switching is realized; therefore, no matter whether the main controller has a software fault or a hardware fault, the slave controller takes over the control right and switches in time, so that the stability and safety of the system are ensured.
Owner:GREE ELECTRIC APPLIANCES INC

Filter system and method

The present application provides a filter system, comprising a hardware filter circuit and a processor connected with the hardware filter circuit. With the filter system provided in the present application, the whole filtering process is accomplished by initially performing the low-pass filtering of first preset frequency-band signals with the hardware filter circuit for the signals to be filtered, reducing the frequency bands entering the processor and then continuing to perform the filtering of second preset frequency-band signals for signals by the processor according to second preset frequency-band signal filtering conditions. During that process, since the hardware filter circuit filters the signals to be filtered, enabling the frequency bands of the first filter signals entering the processor to meet the requirements of less and lower frequency bands, filtering that meets the accuracy requirement can be achieved by only processing the signals of less frequency bands by the processor. It has small data processing amount in the whole filter system, is shorter in time used for computing and is advantageous for the subsequent analytical apparatus to analyze the operation status of train body in time, to meet the high real-time demands of in-situ application and to ensure the operation security of train.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD

Control method of washing machine and washing machine

The invention provides a control method of a washing machine. The control method comprises a dehydration program S2, wherein the dehydration program S2 comprises the following steps: S21, controllingthe washing machine to execute the dehydration program; and S22, controlling the rotating speed of a dehydration motor of the washing machine to be increased and then stabilized at one rotating speed,detecting the weight value of a washing drum of the washing machine in the rotating speed increasing process of the dehydration motor, and detecting the eccentric value of the washing drum after therotating speed of the dehydration motor is stabilized. The invention further provides the washing machine. By adopting the control method of the washing machine, the weight value of the washing drum of the washing machine is detected in the rotating speed increasing process of the dehydration motor, and the eccentric value of the washing drum is detected after the rotating speed of the dehydrationmotor is stabilized, so that the speed increasing process of the dehydration motor can be fully utilized, the time is saved, the delay probability is reduced, the delay time is shortened, the electric quantity is saved, and the user experience is improved.
Owner:HISENSE(SHANDONG)REFRIGERATOR CO LTD

Fire pump controller with fire pump electric control start and mechanical emergent start

The invention relates to a fire pump controller with fire pump electric control start and mechanical emergent start. The fire pump controller comprises a control cabinet body; a self-start locking control switch and a remote control locking control switch are arranged in the lower part of the cabinet body; a PLC is arranged in the control cabinet body; two sets of normal-operated star triangle start operation units are additionally arranged in the control cabinet body for respectively controlling two fire pump motors; two sets of emergent start devices are mounted in the control cabinet body for respectively controlling two fire pump motors; correspondingly, unlocking operation handles with quick energy storage mechanisms are arranged on the emergent start devices; and a main stop button is arranged on a cabinet body panel. The fire pump controller can solve the problem of delay of fire rescue due to incapability of starting a traditional fire pump when a control circuit breaks down, can guarantee the emergent start devices to forcedly start the equipment as long as normal power supply of the fire pump is realized under any conditions of the control circuit, and accords with the regulations of GB50974-2014 Fire Water Supply and Hydrant System Technical Specification.
Owner:CHENZHOU DONGTANG ELECTRIC EQUIP
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