66results about How to "Effective protective measures" patented technology

The invention discloses an elevator fall protective device, which comprises a detecting device for detecting a falling object and a protective device, wherein the detecting device is distributed and arranged in a hoistway of an elevator; and the protective device is arranged on side of the hoistway and ejects a protective net to stop and receive the falling object when the detecting device detects that the falling object exists. Compared with the prior art, the elevator fall protective device has more safe and effective protective measures and can effectively reduce accidents caused by fall of people into the hoistway during the operation of the elevator and improve the safety control during the operation of the elevator.

The invention relates to a tunnel roof separation dynamic monitoring system based on fiber bragg grating and an early-warning method of the tunnel roof separation dynamic monitoring system, and belongs to the field of mine safety monitoring. The tunnel roof separation dynamic monitoring system comprises a ground data processing and controlling subsystem, an underground data transmission and communication subsystem, and an underground sensor data collecting subsystem, wherein the ground data processing and controlling subsystem is placed in a ground control center room, and comprises a ground superior main supervisory control computer, a fiber bragg grating demodulating device and a power supply; the underground data transmission and communication subsystem comprises a mining transmission optical fiber and an optical fiber junction box; the underground sensor data collecting subsystem comprises at least one fiber gragg grating roof separation monitoring device. The tunnel roof separation dynamic monitoring system realizes real-time online dynamic continuous measurement of the roof separation to obtain the deforming situation of the surrounding rock of the tunnel, detects the reasonability of rock bolting support parameters, and once the parameters excess the early-warning threshold values of the separation, emits accurate early-warning signals, so as to take measures in time and prevent collapse of roof. The tunnel roof separation dynamic monitoring system is of great significance in size of external and internal roof separations in the anchoring area and the stability of the tunnel.

The invention relates to a thunder and lightening prewarning system with a honeycomb layout, and the system mainly solves the problem of prewarning precision in the prior art. According to the thunder and lightening prewarning system with the honeycomb layout, single-point thunder and lightening prewarning devices are networked according to the honeycomb layout to perform data integration; the thunder and lightening prewarning system with the honeycomb layout comprises at least three single-point thunder and lightening prewarning devices, a background server and a client terminal; the single-point thunder and lightening prewarning devices are provided with sensors which can monitor physical parameters of the atmospheric electric field value size, direction and change rate within a certain area range and physical parameters of light, electricity, magnetism and sound when thunder and lightening occur and wireless and wire communication function modules. The thunder and lightening prewarning system with the honeycomb layout better solves the problem and can be applied to thunder and lightening prewarning.

The invention provides a motor stalling monitoring device, and a motor protection system and method. The motor stalling monitoring device comprises: a processing module for obtaining feedback current,an estimated rotating speed and an estimated angle based on phase current of a motor; a control module for providing a phase control voltage based on a target rotating speed, the estimated angle andthe feedback current; and a judging module for judging whether the motor is subjected to stalling according to a quadrature axis voltage error value of a component of the calculated phase control voltage on a quadrature axis and/or a straight axis voltage error value of the component of the calculated phase control voltage on a straight axis, so as to provide a stalling early warning signal. According to the motor stalling monitoring device provided by the invention, the estimated rotating speed and the estimated angle of the motor are obtained through the processing module without using a position or rotating speed sensor. Furthermore, whether the motor is subjected to stalling through a straight axis judging method and/or a quadrature axis judging method, and the motor stalling monitoring device can be directly applied to all kinds of sensorless permanent magnet synchronous motor control systems to effectively detect the motor stalling state to achieve timely response and take effective protection measures to maximally extend the service life of the motor.

The invention discloses Virtext5 device-based bit stream file analysis method and a timed refreshing method. The analysis method comprises the following steps of: (1) carrying out bottom architectureanalysis on at least 8 series of Virtext5-type devices and determining a resource type of each series of devices; (2) analyzing bit stream file frame structures of each series of devices, determininga bit number of each frame and a resource type, a size and a position included in each frame, and calculating a total bit number of the bit stream files; (3) generating bit stream files of corresponding series of Virtext5-type devices through ISE according to results of the steps (1) and (2), comparing a total bit number of the generated bit stream files with the total bit number calculated in thestep (2), judging whether analysis of the step (1) and (2) is correct or not, if the judging result is positive, executing step (4), and otherwise, carrying out analysis again from the step (1); and(4) aiming at each series of devices, constructing multi-element equations, the resource types and lengths of which are unknown according to the total bit number of the bit stream files so as to obtain a multi-element equation set, and solving the equation set to obtain sizes of the resource types.

The invention discloses a pipeline inner wall wear corrosion monitoring device and a monitoring method thereof. The pipeline inner wall wear corrosion monitoring device includes an annular wear corrosion sensor, an external pressure chamber and an electronic chamber, the annular wear corrosion sensor is placed in the external pressure chamber, and a potentiostat, a zero-resistance galvanometer, ahigh-precision digital voltmeter, a relay switch, a micro-resistance meter and a signal acquisition controller are placed in the electronic chamber; the sensor is connected to a pipeline through an end flange, an corrosion element and a temperature reference element are both connected to the micro-resistance meter, and the micro-resistance meter measures resistance of each partition, and the resistance is used for calculating the total metal loss rate of the inner wall of the pipeline; an electrode element, a potential reference element and the corrosion element form a three-electrode system,and the corrosion rate is obtained by measuring linear polarization of the corrosion element through the potentiometer and the zero-resistance galvanometer; and a difference between the total loss rate and the corrosion rate is the wear rate. The annular wear corrosion sensor can predict occurrence of wear corrosion in the pipeline, and evaluate the wear rate and corrosion rate of the pipeline inreal time.

The present invention relates to a safety lining, a safety alarming system provided with said safety lining, a logistic vessel provided with said safety alarming system, and a method for improving safety of the logistic vessel, said logistic vessel is provided with a safety alarming system, wherein said safety alarming system including: a plurality of safety linings disposed on the surface of said logistic vessel, each safety lining comprising abase, whose backside is fixed to the surface of the vessel through connecting devices; an electrically conductive unit disposed on said base and having terminals for electrical connections; wherein, the conductive units of a plurality of said safety linings are connected to an interfacing circuit through terminals to form a closed electrically conductive network, said closed conductive network has an equilibrium state for safety and a fluctuant state for unsafety; and an alarming unit connected to said interfacing circuit, which alarms when said conductive network is under fluctuant state. The invention can ensure a timely alarm when the logistic vessel is damaged, therefore improve the safety during the transportation.

The invention provides a display panel and a display device. The display panel comprises a substrate, a blocking dam, a first source and drain electrode layer and a second source and drain electrode layer; the substrate comprises a display region, a non-display region surrounding the display region, and a binding region surrounding a part of the non-display region; the blocking dam is arranged around the non-display region; the first source and drain electrode layer and the second source and drain electrode layer are sequentially stacked on the substrate; the first source and drain electrode layer and the second source and drain electrode layer sequentially penetrate through the blocking dam; in an area, close to the binding area, of the non-display region, the first source and drain electrode layer comprises a first part and a second part which are arranged at an intervals; the second source and drain electrode layer is of a whole-layer structure; the second source and drain electrodelayer is electrically connected with the second part to form a low-potential wire; and the first part forms a high-potential wire. Poor performance caused by the corrosion of the side surfaces of thesource and drain electrode layers can be avoided, and the yield of the display panel is improved.

The invention provides a device for measuring a wide-frequency electric field, wherein the device relates to the field of electric field measuring technology. The device can measure a low-frequency quasistatic electric field component and a high-frequency radiation electric field component of a wide-frequency lightning field. The device comprises a sensing electrode, a shielding housing, a secondary voltage shunting capacitor and a voltage sensor. The shielding housing is grounded. The shielding housing is connected with the sensing electrode through an insulating material. The secondary voltage shunting capacitor and the voltage sensor are arranged in the shielding housing. The sensing electrode is connected with the high-voltage end of the secondary voltage shunting capacitor. The secondary voltage shunting capacitor is parallelly connected with the voltage sensor.

One or more embodiments of the invention disclose a risk application processing method and device, which are used for realizing the effects of accurately identifying a risk application and effectivelyavoiding the user from being fraudulent by the risk application. The method comprises the following steps: obtaining a to-be-identified application installed by a sample user within a specified date,wherein the specified date comprises the date of installing a risk application by the sample user; identifying the risk application from the to-be-identified applications according to a pre-generatedrisk application identification algorithm; wherein the risk application identification algorithm is generated according to the installation parameter information of each application to be identified;and according to the identified risk application, performing a corresponding anti-risk operation on a first user who installs the risk application.

The tension magnifying winch consists of pedestal, cable guide device, cantilever rack, main frame, reinforcing frame, armoured umbilical cable, driving grooved pulley, oil motor brake assembly, planetary reducer and support bearing assembly. The pedestal, the cantilever rack, the main frame and the reinforcing frame are assembled to constitute the integral frame; and the driving grooved pulley is connected to the main frame via the planetary reducer and connected to the cantilever rack via the support bearing and is driven with the oil motor via the planetary reducer. The present invention changes the tension magnifying coefficient through altering the annular groove number in the driving grooved pulley, and is set between the single winch and the releasing device for deep sea and heavy load underwater apparatus.

The invention provides a grid displacement testing system and method based on a ten-shaft sensor. The grid displacement testing method comprises the steps that a ten-shaft sensor chip is embedded intoa geogrid; the ten-shaft sensor chip acquires data information of a monitoring point and uploads the data information to a monitoring cloud management platform; the monitoring cloud management platform obtains geogrid deformation amount and displacement change of the monitoring point through comprehensive analysis according to the acquired data information, conducts error correction processing onthe data information, reduces data error rate and improves data integrity rate; the monitoring cloud management platform synchronously updates the data information acquired by the ten-shaft sensor chip and analysis results to a monitoring database server; a remote monitoring center extracts data in the monitoring database server, obtains the width and extension trend of cracks produced by a wholestructure of the geogrid after further processing, monitors the overall damage trend of the geogrid in real time and finally achieves automatic monitoring of the overall state of the geogrid and early warning of geological disasters.

The invention discloses an internet of things based outdoor cycling monitoring device which is used for monitoring speed and environment parameters of a bike in outdoor cycling. The internet of things based outdoor cycling monitoring device comprises an upper computer (1) and a lower computer (2), wherein the lower computer (2) is composed of a main control unit (21), a speed measurement unit (22), an environment detection unit (23), a wireless communication unit (24), a voice unit (25) and a power supply unit (26), and the speed measurement unit (22), the environment detection unit (23), the wireless communication unit (24), the voice unit (25) and the power supply unit (26) are connected with the main control unit (21); and the upper computer (1) and the lower computer (2) realize wireless transmission of data therebetween through the wireless communication unit (24). The internet of things based outdoor cycling monitoring device has the characteristics of high informatization degree and simple structure, and can effectively monitor the speed and environment parameters of the bike in outdoor cycling.

The invention discloses a customized dismantled reinforced concrete structure and a static crushing dismantling method of the customized dismantled reinforced concrete structure. The customized dismantled reinforced concrete structure has a portion to be subsequently dismantled and a remaining portion. A stress isolation belt is arranged between the portion to be subsequently dismantled and the remaining portion, and the stress isolation belt is composed of an energy absorption material between two steel plate clamps. A single row or multiple rows of large-diameter embedded pipes are embedded to the portion to be subsequently dismantled to be used as static expansion pipes, so that the crushing effect of the customized partially-dismantled reinforced concrete structure is improved. When the portion to be dismantled finishes the use mission, when dismantling is needed, the end of a plug is filled with an expansion agent, the plug is sealed, and the portion to be dismantled can be structurally disassembled. According to the customized dismantling building structure, the available stable building structure can be fully utilized, the building structure to be dismantled is dismantled with low noise and low potential safety hazard, and energy conservation and environmental protection are better achieved.

The invention relates to the technical field of intelligent driving, in particular to an intelligent driving safety protection device which comprises a danger factor sensing module, a danger level recognition module, an emergency scheme planning module, and an emergencyscheme execution module. The danger level recognition module is used for realizing recognition of the current danger level based on the Bayesian prediction model; the emergency scheme planning module is used for planning an emergencyscheme according to the danger level recognition result, the current automobile surrounding environment factor and the automobile state factor; and the emergency scheme execution module is used for realizing execution of an emergency scheme, carrying out danger early warning and reminding a userto switch a driving mode. According to the invention, dangerous factors existing in the intelligent driving process of the automobile can be found in time, and effective protection measures are provided.

The invention discloses a powdery object agglomeration breaking device, which comprises a main hollow shell, a raw material injection hole is arranged in the center of the upper surface of the main hollow shell, and the inside of the main hollow shell is A first transverse hollow structure is arranged at the bottom of the raw material injection hole, and an activity space is arranged inside the main hollow shell at one end of the first transverse hollow structure, and the inside of the main hollow shell An iron core with coils wound on one side is fixed at one end of the activity space. The present invention can break up large lumpy coal or agglomerated cement, thereby breaking up lumpy coal or agglomerated cement into usable small lumpy coal or agglomerated cement. The type of grinding can improve the degree of breaking up and the efficiency of breaking up, and speed up the work speed. In addition, the device has a corresponding protection mechanism, which can take effective protection measures and has strong practicability.

The invention discloses a collision early warning system. According to the system, at least two relatively independent devices or fixed collision bodies serve as collision main bodies, each collisionmain body comprises a data acquisition unit, a data processing unit, a data distribution unit, a collision calculation unit, a control output unit and a data display unit, the first collision main body carried out signal processing on the data acquired by the data acquisition unit so as to obtain the three-dimensional dynamic models of the whole devices and transmits the data to other collision main bodies at the same time, the other collision main bodies transmit the three-dimensional dynamic data to the first collision main body in the same manner, the actual distance between two collision main bodies are calculated through comparison, and the calculation result is fed back to a user through the data display units. The system has the advantages that the collision distance between the multiple devices can be calculated, the multiple devices can be controlled to take effective protection measures and provide alarm notification information according to calculation, and therefore the safety is high.

The invention provides a vehicle-mounted hydrogen storage cylinder service monitoring device and method based on optical fiber sensing. An optical fiber grating is wound on a hydrogen storage cylinder, and a strain sensor is arranged on the hydrogen storage cylinder; double deformation signals of inflation deformation of an inner container of the hydrogen storage cylinder and deformation of a composite material structure of the hydrogen storage cylinder are sensed, demodulated and analyzed by connecting a hydrogenation gun with an optical fiber flange, the stress-strain condition of the hydrogen storage cylinder is monitored in real time, and the fatigue damage structure of the hydrogen storage cylinder is identified and positioned through inversion; and data are further compared and confirmed in combination with a big data cloud platform analysis technology, so that the function of monitoring the stress state of the vehicle-mounted hydrogen storage cylinder in real time is realized, effective protection measures can be conveniently taken in time, the safety and reliability of the hydrogen storage cylinder are ensured, and the real-time monitoring and early warning functions of the vehicle-mounted hydrogen storage cylinder are comprehensively realized.

The invention discloses an intelligent monitoring system for outdoor exercise based on the internet of things. The system is used for monitoring human body physiological parameters and outdoor environmental parameters when people do outdoor exercise. The intelligent monitoring system for outdoor exercise based on the internet of things is composed of an upper computer (1), a wearable human body parameter monitoring terminal (2) and a portable environmental data monitoring terminal (3); the wearable human body parameter monitoring terminal (2) is used for collecting body temperature and heart rate parameter indexes of the human body when people do outdoor exercise; the portable environmental data monitoring terminal (3) is used for collecting humidity and temperature, ultraviolet intensity,PM 2.5, atmospheric pressure parameter indexes and GPS positioning information of the outdoor environment. The intelligent monitoring system has the advantages of high informatization degree and simple structure, and human body health physiological indexes and outdoor environmental parameters can be effectively monitored.

Disclosed herein is a forced irradiated air shielding mechanism that is an effective protective measure against Covid-19. The UV-C irradiated forced air flow face shield described herein is compact enough to be camouflaged under a cap. In this work it is mathematically proven that the described UV-C irradiated forced air flow face shield by itself provides more effective protection against the Covid-19 or similar airborne pathogens. The shield can be enabled using a mercury discharge tube or light emitting diode (LED) irradiator. Computational fluid dynamics is presented to show that positive irradiated air pressure ensures that the only air breathed by the wearer is irradiated. Also presented is a face shield testing apparatus.