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75results about How to "To achieve the purpose of security protection" patented technology

Double twisting rope laying machine

The invention discloses a double twisting rope laying machine which comprises a core wire laying machine, a core wire tension mechanism, a surface wire laying mechanism, a single wire pre-twisting machine, a wire collecting mechanism and a wire-rewinding machine arranged sequentially, wherein the core wire tension mechanism comprises a broken wire detecting device, a wire roller, a tension control device and a tension detecting device; the core wire output tension is detected by the tension detecting device, and if the tension exceeds a set tension range, the core wire output tension is adjusted by the tension control device to realize accurate control of the core wire laying tension; and the single wire pre-twisting machine comprises a motor, a transmission component and a plurality of groups of rotor components which are arranged at the front surface and the back surface of a stand. Through the rotation of each group of rotor components, the single wire pre-twisting process is realized and the single wire stress is eliminated, thereby being favorable to twisting and forming, and finally, the twisted cords have good straightness, stable residual torsion and high product quality and is difficult to loose; and the specifications of the producible cords are 3+9+15*0.22, 3+9+15*0.175 and 0.25+(6+12)*0.22.
Owner:江苏泰隆机电科技有限公司

Unsafe automobile driving detection device and method based on image identification

The invention provides an unsafe automobile driving detection device and method based on image identification. The device comprises a vehicle state detection system, an image processing system, a second judgment system and a control system. The method comprises the steps that facial images of a driver in a fatigue state and a drunkenness state are collected to form an expression library; a vehiclestate is detected, and the image processing system or the control system is triggered according to a condition; the facial images of the driver are analyzed, and the control system or the second judgment system is selectively triggered according to the similarity of facial feature images of the driver and facial feature images of the expression library; the second judgment system collects physical information in a cab, and the control system is triggered if it is judged that the driver is in an unsafe driving state at this moment; the control system is started to conduct corresponding controlover vehicles according to different unsafe driving states, and an alarm sends out a voice prompt. According to the unsafe automobile driving detection device and method, a driver can be early warnedof any possible traffic accident, and the occurrence of traffic accidents is effectively prevented.
Owner:JILIN UNIV

Energy storage charging system

The invention discloses an energy storage charging system, which comprises an AC / DC converter and a DC / DC converter, wherein the high-frequency isolation conversion AC / DC converter takes power from power grid to supply power to a load, and the high-frequency isolation conversion DC / DC converter discharges power from battery to supply power to the load. The energy storage charging system is chargedby converting the charging ACDC into direct current electric energy, and meanwhile, the high-frequency isolated DCDC conversion device can discharge electricity to the load power supply bus, and simultaneously, the ACDC connected with the alternating current converts the alternating current electric energy into direct current electric energy to the load power supply bus to supply power to the load. The charging ACDC is isolated through the high-frequency isolation transformer, and the electric energy passing through a transformer is adjusted, so that the charging voltage and current of the direct-current bus to an energy storage device are adjusted; and a power supply DCDC is isolated through the high-frequency isolation transformer, the electric energy passing through the transformer isadjusted, and the power supply voltage and current of the load power supply bus are adjusted, so that the purpose of charging an electric vehicle or other types of loads is achieved.
Owner:SHENZHEN YINGFEIYUAN TECH CO LTD

Diesel engine lubricating oil feeding security parameter prediction method based on grey theory

The invention relates to a diesel engine lubricating oil feeding security parameter prediction method based on a grey theory, which belongs to the technical field of diesel engine safety prediction. The method comprises the steps of firstly collecting the operation data of the diesel engine lubricating oil feeding pressure and temperature, and carrying out the Kalman filtering of the operation data, then, according to the modeling steps of the grey prediction model, achieving the prediction function of diesel engine operation data and acquiring a prediction result, checking the grey predictionmodel by using a relative error checking method, optimizing the grey model by using a residual error method if the grey prediction model does not meet the fourth-level checking index until the grey model meets the fourth-level and higher-level indexes, and outputting accurate prediction data, and on the basis that the relative error of the prediction data is verified to be qualified, performing logic discrimination on the prediction result and a diesel engine alarm threshold, and outputting a prediction state result to an upper computer. According to the method, the change trend of the dieselengine lubricating oil feeding parameters can be effectively predicted, and the future working state of the diesel engine lubricating oil system is reasonably predicted.
Owner:HARBIN ENG UNIV

High-frequency isolation conversion energy storage system

The invention discloses a high-frequency isolation conversion energy storage system, which comprises high-frequency isolation conversion two-way DC / DC conversion devices and a direct current bus, wherein a first connecting point of each two-way DC / DC device is connected with an energy storage device; a second connecting point is connected to the direct current bus; through the two-way DC / DC devices, electric energy in the energy storage devices can be subjected to two-way alternating with the direct current bus through high-frequency isolation conversion. A plurality of energy storage devicesare isolated from the high-frequency isolation transformers of the two-way conversion devices subjected to high-frequency isolation from the direct current bus; the electric energy passing through a transformer is limited, so that the fault current of the direct current bus is reduced; the goal of safe protection is achieved; the plurality of groups of energy storage devices are connected with thebus through respectively independent two-way isolation conversion devices; the differences among different energy storage devices cannot generate mutual influence; the energy storage devices with different properties can even be used in a combined way.
Owner:SHENZHEN YINGFEIYUAN TECH CO LTD

Monitoring and protecting device and system and method of electrical load

The invention discloses a monitoring and protecting device, a system and a method of electrical load. The system comprises a magnetic field collecting device and an electrical load monitoring and protecting device. The magnetic field collecting device and the electrical load monitoring and protecting device are communicated in a wireless manner. After the scheme is adopted, an electromagnetic field of a primary side electric transmission line of a special transformer user is measured through the magnetic field collecting device, current value by pre-set magnetic field-current switch calibration coefficient is obtained and is transmitted to the electrical load monitoring and protecting device, electrical load monitoring can be achieved by a manner of comparing the power of the primary side with the power of a secondary side through the electrical load monitoring and protecting device, and therefore defects of complicated installation and low acceptability of users of an existing load monitoring device are solved. In addition, safe protection of electric equipment is achieved by utilizing identity authentication information of the users and an electric lock, and locking and unlocking of the electric lock can be controlled by using unique identity authentication information, and therefore the purpose of the safe protection of the electric equipment is achieved.
Owner:STATE GRID CORP OF CHINA +2

Explosion protection system of refrigerating equipment adopting combustible refrigerant and safety design method

The invention belongs to the technical field of refrigerating equipment and particularly relates to an explosion protection system of refrigerating equipment adopting a combustible refrigerant and a safety design method. The explosion protection system comprises a negative pressure isolation exhaust system, an electrical junction box positive pressure explosion protection system and an active detection alarm system connected with an electrical control system separately. The refrigerating equipment body containing the combustible refrigerant is in the negative pressure environment; in the caseof leakage, the combustible refrigerant is discharged outdoors according to the assigned flow direction and a passage to rapidly reduce the concentration of the combustible refrigerant gas near the refrigerating equipment body; a non-explosion-proof testing instrument or a sensor stayed in an anti-explosion area is arranged in the positive pressure environment to effectively prevent the leaking combustible refrigerant from being in contact with an ignition source; and a plurality of monitoring points are arranged at the pipes possibly leaking of the refrigerating equipment body to actively monitor the concentration of the combustible refrigerant gas near the refrigerating equipment body in real time, and when the concentration is abnormal, sound-light alarm is timely sent out and a forcingexhaust system is started.
Owner:广州东弛自动化设备有限公司

Three-in-one detecting pre-warning device and detecting method for oil field crude oil storage tank

The invention relates to the technical field of crude oil detection, in particular to a three-in-one detecting pre-warning device and detecting method for an oil field crude oil storage tank. The device comprises a hydraulic upper pressure sensor, a hydraulic lower pressure sensor, a temperature sensor, an analog signal acquisition unit, a core processing unit, a power supply module, a field display module, a wireless communication output module, a wireless communication receiving module, an in-situ sound-light alarm device, a liquid inlet solenoid valve, an electric heating control unit, a monitoring host and a monitoring software system. The three-in-one detecting pre-warning device has the beneficial effects that: the detecting pre-warning device takes a three-in-one sensing structure to perform real-time detection on the temperature, the pressure and the liquid level of the storage tank, realizes in-situ and remote display of data as well as in-situ sound-light alarm pre-warning and remote record and analysis of data, and promotes a loading signal to solve the problems such as late data monitoring, high operation and maintenance cost and oil overflow potential safety hazards inthe prior art. The detecting method can reduce operation and maintenance cost of the oil field crude oil storage tank, especially a remote oil well crude oil storage tank.
Owner:BINZHOU UNIV

Hidden security and protection monitoring device

The invention discloses a hidden security and protection monitoring device, which comprises a clock disc, a base and a rear seat. A high-definition micro-camera and an infrared detector are sequentially arranged from left to right and are positioned above a watch hand arranged on the front surface wall of the clock disc. The base is fixedly connected with the lower surface wall of the clock disc.A temperature and humidity display is arranged on the front surface wall of the base. A signal receiving screen is arranged on one side of the temperature and humidity display. A rear hook is fixedlyarranged on the rear seat arranged on the rear surface wall of the clock disc. A combustible gas detector is arranged on the side wall of the clock disc. A watch hand rotating gear arranged in the rear seat is fixedly connected with a pointer on the clock disc. According to the invention, due to the arrangement of the high-definition micro-camera, the clock disc, the base, the temperature and humidity display and the rear seat, the problems of complex equipment, troublesome installation, not attractive appearance, poor affinity, bad invisibility, easily caused false alarm, single function andthe like in the prior art are solved. Meanwhile, the problem that the diversified life requirements of people cannot be met is also solved.
Owner:西安龙之梦网络信息有限公司

External terminal protection equipment and protection system comprising identity information verification

The invention discloses external terminal protection equipment and a protection system comprising identity information verification. The external terminal protection equipment comprises: a plurality of external interfaces used for being connected with one or more external equipment and a piece of protected equipment respectively; the identity information acquisition module that is used for acquiring identity information of a user in real time; the file monitoring module that is connected with the identity information acquisition module, is used for verifying the identity information, and is also used for controlling the security authentication of external equipment accessed to the external interface; and the file transmission module that is connected with the file monitoring module and isused for transmitting the file data imported by the external equipment to the protected equipment under the control of the file monitoring module. According to the invention, the purpose of performingsafety protection on the protected equipment without installing safety protection software on the protected equipment can be achieved, and the safety risk of the system is greatly reduced by verifying and determining the identity and the use permission of the current operator.
Owner:北京中科麒麟信息工程有限责任公司

Novel lane control warning device

Provided is a novel lane control warning device. A central control module is connected with an onboard dialing module, an audio power amplifier module, a red and blue flashing module, an LED drive module, a DC-DC module, a feedback module, a resistor R and capacitor S485 communication module, a data storage module and an information collection module interface. The audio power amplifier module is connected with a horn, the red and blue flashing module is connected with a red and blue flashing lamp circuit board module, the LED drive module is connected with an LED circuit board module, the DC-DC module is connected with an external power source module, an information collection module 1 is connected with a photosensitive sensor, and a 485 communication module is connected with a data bus. The central control module sends signals to the LED drive module to lighten LED distribution points in the LED circuit board module in a default state, the feedback module sends the current display state to an external monitoring center, the monitoring center sends state information to be displayed to the data bus, the resistor R and the capacitor S485 communication module communication module of an LED lane indication sign receive corresponding data, and the purpose of safety protection is achieved.
Owner:陕西高速电子工程有限公司
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