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346results about How to "Monitoring status" patented technology

Air-gap field detecting device of alternating-current generator and application thereof in state monitoring and control method of alternating-current generator

The invention relates to an air-gap field detecting device of an alternating-current generator, comprising a detecting coil and a signal detecting and processing circuit, wherein the detecting coil is arranged on a rotor of the alternating-current generator and surrounds one zone on the inner surface of the stator, and the induced voltage of the detection coil is relevant to the strength of an air-gap field in the zone surrounded by the detecting coil, as well as the distribution condition and the changes of the air-gap field; the signal detecting and processing circuit is connected with the detecting coil and used for detecting and processing the induced voltage of the detecting coil; the signal detecting and processing circuit can be used for detecting and processing the fundamental waves or the harmonic waves of the induced voltage of the detecting coil, or detecting and comparing the induced voltages of different detecting coils, and the detection and processing result can be used for the monitoring of the states of the generator, including the faults of stator and rotor windings, the decentraction of a stator and a rotor, axial and opposite shift of the stator and the rotor, magnetism loss, overload, external short circuit and circuit breakage and the like; and the detection and processing result of signals can also be used for the operation control of the generator.
Owner:田京涛

High-power direct-current charging machine/pile DC-DC conversion device for electric automobile and control method of high-power direct-current charging machine/pile DC-DC conversion device

The invention discloses a high-power direct-current charging machine/pile DCDC conversion device for an electric automobile and a control method of the high-power direct-current charging machine/pile DCDC conversion device. A multiphase interleaving voltage decrease and increase adjustment technology is adopted in the device, the requirements for adjustment of wide voltage input and wide voltage output are met, and through the modularized control structure design, the output of charging energy can be controlled, the output ripples can be reduced, and power and efficiency are improved. The output voltage and the current of the device can both be controlled, and the device has the protection functions of current protection, voltage protection, temperature protection, power protection, drive short circuit protection and the like; and a pre-starting current limiting module, a charging pre-starting and discharging protection module, a hardware overcurrent protection module and a fault signal processing module are additionally arranged, so that the safe reliability of the device is effectively enhanced. The device is small in ripple, high in conversion efficiency, low in cost, simple in structure, small in start current and high in safe reliability, the device can be used for high-power direct-current charging machine/pile DCDC power conversion for the electric automobile and also be used for other power and power supply equipment, and the device is suitable for being used in various power and electronic fields.
Owner:WUHAN UNIV OF TECH

Tool state monitoring and life predicting system based on multi-source information fusion

PendingCN109724785AMonitoring forceThe monitoring device monitors the force in real timeMachine part testingProject managementInformation acquisition
The invention discloses a tool state monitoring and life predicting system based on multi-source information fusion, comprising: an information acquisition module, a signal preprocessing module, a state monitoring module, a life predicting module, and a remote monitoring module. The information acquisition module collects the parameter information of the hob, and sending them to the condition monitoring module and / or the life predicting module after preprocessing by the signal preprocessing module; outputting the hob status by the condition monitoring module; outputting the remaining life of the hob by the life prediction module. The output of the status monitoring module and the life predicting module can be directly viewed on the spot and can be viewed remotely. The tool state monitoringand life predicting system based on multi-source information fusion realizes visual management by real-time monitoring the key parameters such as the force, wear amount, rotation speed, and shape ofthe hob by the hob monitoring device, and monitors the state of the hob in real time and predicts the remaining life of the hob by analyzing and processing the relevant signals of the hob. Further, the communication-related project management staff of the remote monitoring module can view through mobile phones, remote PCs, etc, helping humanely determine if the tool is replaced.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Automobile part cleaning system with capability of monitoring cleaning state

The invention discloses an automobile part cleaning system with the capability of monitoring a cleaning state. The automobile part cleaning system comprises a cleaning device and an intelligent controlling system which is connected with the cleaning device, wherein an embedded processor, a video matrix circuit, an AD conversion circuit, a DA conversion circuit, a PLC control circuit and a camera group are arranged in the intelligent controlling system; the cleaning device is composed of a box body and a box cover; an object placing plate is arranged in the box body and on a rotary shaft system; a bottom-spraying main pipe is also arranged below the object placing plate; spraying diverging pipes are also vertically arranged on the bottom-spraying main pipe in the box body and near the side wall of the box body; and a plurality of spraying branch pipes are horizontally arranged on each spraying diverging pipe inwards. The automobile part cleaning system can monitor the cleaning process and state of an automobile part in real time and timely close control valves on a spraying system on one side through intelligence of the intelligent controlling system after monitoring the side is cleaned, so that the purpose of saving water is achieved.
Owner:重庆凯顺机械有限公司

Electric vehicle safety control system and method

The invention discloses an electric vehicle safety control method. The electric vehicle safety control method comprises a preparation process: when a mobile phone is in a certain range far away from an electric vehicle, enabling the electric vehicle to find the mobile phone which is getting close through technological manners such a Bluetooth or wireless local area network wifi through presetting and to transmit a preparation signal to the mobile phone such that both the electric vehicle and the mobile phone enter a preparation state; a starting process: clicking the NFC (Near Field Communication) interaction region of the electric vehicle by using mobile phone NFC to start a two-dimensional code acquisition camera, generating a disposable two-dimensional code with unfixed data through a designated algorithm by an application installed in the mobile phone in order to execute a confirmation operation during setting of functional parameters of the electric vehicle; enabling the authorized mobile phone to get close to the camera of the electric vehicle and displaying the correct two-dimensional code through a screen, wherein the electric vehicle is not started until the camera of the electric vehicle captures the two-dimensional code and verifies that the two-dimensional code is valid.
Owner:SHANDONG BEGREEN NEW ENERGY TECKNOLOGY CO LTD

Test strip for identifying foot-and-mouth-disease virus infected and vaccine immunized animal at one step and preparation method of test strip

The invention relates to a test strip for rapidly identifying a foot-and-mouth-disease virus infected and vaccine immunized animal and a preparation method of the test strip. The test strip comprises a supporting layer and an adsorbing layer; the adsorbing layer is attached to the supporting layer; the adsorbing layer comprises a sample adsorbing fiber layer, a gold-labeled antibody fiber layer and a cellulose membrane layer sequentially arranged on the testing end and further comprises a water absorbing material layer arranged on the handle end; a detection blot and a control blot are arranged on the cellulose membrane layer; the colloidal gold labeled staphylococcus protein A is adsorbed on the gold-labeled antibody fiber layer; the detection blot is printed by one or two of a pig foot-and-mouth-disease virus protein structural VPI antigen and a non-structural protein 3ABC antigen which are expressed and purified by an escherichia coli expression system; and the control blot is printed by using a goat anti- or rabbit anti-SPA IgG antibody solution. The test strip is high in specificity, high in sensitivity, simple, direct, exact, wide in application scope, low in cost, capable of being used by professionals or non-professionals for detection at any time and any place and beneficial to popularization and application.
Owner:HENAN ACAD OF AGRI SCI
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