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612results about How to "Eliminate potential safety hazards" patented technology

Safety pressure cooker

The invention is a cooking utensil, a safety pressure cooker, and aims to provide a safety pressure cooker with simple and reliable structure and no explosion. The pressure cooker comprises a pot body, a pot cover, a pressure limiting valve and a sealing ring. It is characterized in that the sealing ring is connected with the elastic body, and the sealing ring moves or rotates under the action of the steam pressure in the pot, and its action is controlled by the elastic body. The elastic body is added with a preset force or a preset torque, and its value is equal to the pressure or torque of the steam on the sealing ring when the steam pressure in the pot is a safe pressure. Therefore, when the steam pressure in the pot is lower than the safety pressure, the sealing ring will not move and maintain its sealing effect. But when the steam pressure in the pot exceeds the safety pressure, the pressure or torque of the steam in the pot on the sealing ring is greater than the preset value of the elastomer, so that the sealing ring moves or rotates, and a gap is formed between the sealing ring and the pot body and cover. The steam releases and the steam pressure decreases. The safety device has the advantages of simple structure, stability and reliability, and can effectively eliminate potential safety hazards of the pressure cooker.
Owner:文竞业

Living body human face identifying method

ActiveCN104766063AEliminate potential safety hazardsReduce the proportion of occupationCharacter and pattern recognitionGray level imageLiving body
The invention discloses a living body human face identifying method. The method is divided into a training stage and an identifying stage. In the training stage, multiple living body human face images and picture human face images are obtained, the feature vector of a gray level image of each living body human face image is extracted to serve as a positive sample, and the feature vector of a gray level image of the human face image of each picture is extracted to serve as a negative sample, all the positive samples and all the negative samples are input into an SVM classifier to be trained, and an SVM classifier training model is obtained; one frame human face image is obtained in the identifying stage, the human face identifying technology is used for identification, when an identification result shows that a user is legal, the living body detection technology is used for extracting the feature vectors, and the feature vectors are input into the SVM classifier training model to conduct living body detection. The living body human face identifying method has the advantages that the human face identifying technology is used for judging whether the human face is the human face of the legal user or not, the legal user then can judge whether the human face is a living body human face or a counterfeit picture human face through the living body detection technology if the user is legal, and therefore potential safety hazards caused by the picture human face are effectively eliminated.
Owner:NINGBO UNIV

Intelligent charging method and device for battery management system of electric vehicle

The invention discloses an intelligent charging method and device for a battery management system of an electric vehicle. A microcontroller is connected with communication interfaces of a whole vehicle controller, the battery management system and a vehicle-mounted charger, messages relevant to charging information are read, charging parameters are regulated, a communication module informs the charging information to the battery management system and the vehicle-mounted charger, and after information feedback from the battery management system and the vehicle-mounted charger is received, a charging command is sent to the vehicle-mounted charger through the communication module; after receiving the charging command, the vehicle-mounted charger charges a power battery after converting the input alternate current into high-voltage direct current; and the microcontroller displays the charging information to a driver in real time through a man-machine interaction unit and regulates the charging strategy. The charging current and charging voltage of the vehicle-mounted charger can be regulated automatically according to the charging information sent by the whole vehicle controller, the current residual volume of the battery management system and other information, and the driver is prompted through a man-machine interaction interface, thereby avoiding the damage to the battery in a blindly charging state due to overcharging, eliminating potential safety hazards caused by overcharging batteries, ensuring life safety and avoiding economic loss.
Owner:QIMING INFORMATION TECH

Road junction driving auxiliary device for motor vehicle

The invention discloses a road junction driving auxiliary device for a motor vehicle. The road junction driving auxiliary device comprises an identification unit, a distance measuring unit, a speed measuring unit, a central processing unit and an early warning prompting unit, wherein the identification unit is used for collecting information of images in front of the motor vehicle in real time and analyzing and identifying the information, as well as sending related information to the central processing unit when a traffic light and a stop line at a road junction are identified; the distance measuring unit and the speed measuring unit are respectively used for sensing real-time speed of the motor vehicle and a distance between the motor vehicle and the stop line, and feeding the measured data back to the central processing unit; the central processing unit is used for calculating so as to judge whether the motor vehicle can safely pass the road junction or not according to the received data and image information, and corresponding voice prompt can be given by the early warning prompting unit. According to the device, the problem that a driver can not accurately judge whether the motor vehicle can safely pass the road junction or not is solved, and a good human-computer interface is provided, so that the burden of the driver is reduced, the driving safety is improved, and the transportation is facilitated.
Owner:HUAZHONG UNIV OF SCI & TECH

Truss type hydraulic folding and conveying device for ships

The invention discloses a truss type hydraulic folding and conveying device for ships. The truss type hydraulic folding and conveying device for ships comprises a fixing rack, a belt conveying mechanism and a foldable truss type conveying arm mechanism, wherein the belt conveying mechanism is arranged in the truss type conveying arm mechanism, the truss type conveying arm mechanism comprises a first conveying arm and a second conveying arm, the first conveying arm is connected with the fixing rack in a folding mode, the second conveying arm and the first conveying arm are connected in a folding mode, the fixing rack is provided with a security portal frame and a wire rope winding mechanism, the bottom of the security portal frame is connected to the fixing rack in a rotatable mode, the security portal frame is automatically erected or folded along with unfolding or folding of the first conveying arm, a foldable supporting connection rod is hinged between the lower portion of the security portal frame and the fixing rack, the maximum erecting angle B of the security portal frame is smaller than 90 degrees when the supporting connection rod is completely unfolded, and a wire rope is connected to the front end and the middle of the first conveying arm through an idler wheel at the top of the security portal frame. The truss type hydraulic folding and conveying device for ships has the advantages of being low in cost, high in safety, operability and navigation capacity and low in safety accident rate.
Owner:尹志强

Fault diagnosis and safety pre-warning oriented elevator monitoring system and method

The invention discloses a fault diagnosis and safety pre-warning oriented elevator monitoring system and method. A cloud-side processing module is used for receiving data of all machine room board modules and camera modules in multiple elevator cars and achieving the computation and storage functions. The machine room board modules control data of the multiple elevator cars, achieve the computation and temporary storage functions and transmit computation results to the cloud-side module. Elevator car ceiling board modules collect data of the corresponding single elevator cars, transmit the data to elevator car ceilings in an I2C mode to be processed and transmit processing results to the machine room board modules. Elevator car door board modules are used for collecting data of barometer sensors and three-axis acceleration sensors mounted nearby elevator car doors, conducts filtering, integration and vibration analysis on the data and transmit processing results to the corresponding elevator car ceiling board modules for being processed. The fault diagnosis and safety pre-warning oriented elevator monitoring system achieves the real-time monitoring analysis effect through layer-by-layer grading and function decoupling of all the modules and meanwhile improves the elevator running state monitoring and fault pre-warning accuracy.
Owner:ZHEJIANG UNIV

Multi-source information fusion vehicle-mounted child safety auxiliary system

The invention discloses a multi-source information fusion vehicle-mounted child safety auxiliary system. The multi-source information fusion vehicle-mounted child safety auxiliary system comprises a vehicle-mounted power source management terminal, a vehicle-mounted environment parameter acquiring terminal, a vehicle-mounted executing terminal and a mobile phone terminal; the vehicle-mounted powersource management terminal comprises an automobile state detecting module, a power source switching module, a power module and a solar power generating module; the vehicle-mounted environment parameter acquiring terminal comprises an infrared camera module, an oxygen concentration measuring module, a carbon dioxide concentration measuring module, a temperature and humidity measuring module and aGPS positioning module; the vehicle-mounted executing terminal comprises an air conditioning module, a GSM communication module and an alarming module; and the mobile phone terminal comprises a mobilephone client. According to the multi-source information fusion vehicle-mounted child safety auxiliary system, three parameters of an actual condition image, oxygen concentration and carbon dioxide concentration in a vehicle are comprehensively measured, whether a child is trapped in the vehicle or not is judged, and higher safety and reliability are achieved; and by means of an air conditioner system in the vehicle, air conditioning is performed in time, the safety of the child being trapped in the vehicle is guaranteed, the automobile is made safer and more reliable, and the potential safetyhazards are effectively eliminated.
Owner:ANHUI UNIV OF SCI & TECH

Air-to-air cooling double-fed asynchronous wind driven generator

The invention relates to an air-to-air cooling double-fed asynchronous wind driven generator, in particular relates to an air-to-air cooling double-fed asynchronous wind driven generator with a good heat radiation effect. With the adoption of the air-to-air cooling double-fed asynchronous wind driven generator disclosed by the invention, the problem that the conventional double-fed asynchronous wind driven generator has poor ventilation and a heat radiation effect of a motor due to an unreasonable structure can be solved. The air-to-air cooling double-fed asynchronous wind driven generator comprises an engine seat, a rotating shaft, a stator, a rotor and an air-to-air cooler. An axial ventilation channel is arranged on the rotating shaft; a radial rotor air vent is arranged on a rotor iron core; a radial stator air vent is arranged on a stator iron core; a baffle is fixedly arranged in the axial ventilation channel; the left end of the rotating shaft is fixedly connected with a left centrifugal fan, and the right end of the rotating shaft is fixedly connected with a right centrifugal fan; and a rotor winding connection wire end is located at the right side of a fixed rotor, and a stator winding connection wire end is located at the right side of the fixed rotor. The generator disclosed by the invention is in a ventilation structure and has the good heat radiation effect. The ventilation structure of the air-to-air cooling double-fed asynchronous wind driven generator can be widely applied to double-fed asynchronous wind driven generators.
Owner:CRRC YONGJI ELECTRIC CO LTD

Method for automatically checking protection functions of microcomputer main-transformer differential protection device

The invention discloses a method for automatically checking the protection functions of a microcomputer main-transformer differential protection device. The method includes the steps of starting a checking mode, shutting external alternating current sampling, reading a protection control word and a protection control definite value, starting to test an item of a test, judging whether protection is input or not, shutting other protection functions, generating a test sequence according to the definite value, carrying out alternating current input assignment, judging whether the protection acts or not, recording action values and action evaluation, releasing protection function shutting, judging whether the test is completed or not, generating a function checking report, printing the function checking report, exiting from the checking mode, starting external alternating current sampling and the like. By means of the method, extra hardware cost and extra outside loop wiring are not needed, testing of the various protection functions of the whole device can be completed without manual intervention and protection for a tester, the testing process and the testing result are dynamically displayed in real time, and the test report is automatically generated. Due to the automatic checking technology, device test items are standardized, and technical errors, such as test item missing, testing method mistaking and testing result misjudgment, caused by the capacity of workers are avoided.
Owner:STATE GRID CORP OF CHINA +1

Electric automobile and monitoring method of power battery of electric automobile

The invention provides a monitoring method of a power battery. The method includes the following steps that whether an electric automobile is in a flameout parking state or not is judged; if the electric automobile is in the flameout parking state, an automobile-mounted terminal is controlled to enter in a dormant state, and a timing module starts to conduct timing; when the timed time reaches first preset time, the automobile-mounted terminal and a battery management system are awakened to enter in a working state, and the timing module is controlled to restart conducting timing; the batterymanagement system enters in the working state, starts to monitor battery state information of the power battery and sends the battery state information to a monitoring platform through a communicationmodule; and when the re-timed time reaches second preset time, the battery management system is controlled to stop working and enter in a dormant state, and whether the electric automobile is in theflameout parking state or not is judged again. By the adoption of the provided monitoring method of the power battery, potential safety hazards of the power battery in the flameout parking state of the automobile can be eliminated. The invention further provides the electric automobile.
Owner:OPTIMUM BATTERY CO LTD

Implementing method for carrying out alarming on abnormal temperature inside mobile phone

The invention discloses an implementing method for carrying out alarming on the abnormal temperature inside a mobile phone, which comprises the following steps of: 1, after the mobile phone is started, entering a program; 2, detecting the temperature inside the mobile phone and recording a current temperature sampled value T; 3, judging whether the T value is valid, executing the step 4 if yes, or judging that the temperature detection is abnormal, prompting an alarm ring tone or vibrating and displaying that the temperature is wrong on a display screen; 4, comparing the current temperature value T with a normal use temperature range of t1 to t2, in which a system acquiesces, and judging a state of the temperature inside the mobile phone; 5, when the T is less than t1, judging the state into the low temperature abnormity, and when the T is greater than t2, judging the state into the high temperature abnormity, and prompting the alarm ring tone or vibrating; 6, prompting a user to process the current temperature abnormal state, prompting the user to take away the mobile phone from the low temperature environment in the low temperature abnormality state, and prompting the user to take away the mobile phone from the high temperature environment or pause using the mobile phone in the high temperature abnormality state; 7, displaying the real-time temperature value T in a temperature display directory in the system so that the user can view the temperature; and 8, finishing the program. The implementing method has simple structure and is safe and practical.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Device and method for monitoring neutral point earthing of secondary winding of electric power current and voltage mutual inductor

The invention provides a device and method for monitoring the neutral point earthing of a secondary winding of an electric power current and voltage mutual inductor. The device comprises a detection amplification module, a judgement processing module, a control circuit and an alarming circuit, wherein the detection amplification module is used for detecting and amplifying a current in the neutralpoint earthing wire of the secondary winding of an electric power current and voltage mutual inductor; the judgement processing module is used for judging whether the amplified current reaches an alarming current threshold value; if the amplified current reaches the alarming current threshold value, a control circuit switch is triggered to be closed; the control circuit comprises the control circuit switch and an alarm starting unit, the control circuit is conducted when the control circuit switch is closed, and the alarm starting unit triggers an alarming circuit switch to be closed; the alarming circuit comprises the alarming circuit switch and an alarm indicator light; and when the alarming circuit switch is closed, the alarming circuit is conducted, and the alarm indicator light is lightened. According to the device and the method provided by the invention, the neutral point earthing condition of the secondary winding of an electric power current and voltage mutual inductor can bemonitored in real time, the device gives out an alarm in time if multiple-point earthing is found, and maintenance staff are notified to process the earthing condition, thereby the potential safety hazard is eliminated.
Owner:SHENZHEN POWER SUPPLY BUREAU

Visual positioning method of large-size material and carrying robot

The invention discloses a visual positioning method of a large-size material and a carrying robot, and relates to the technical field of machine vision. The visual positioning method comprises the following steps of acquiring a depth image of a material through a depth camera; carrying out analyzing to obtain coordinates of each point on the depth image in a three-dimensional coordinate system; and identifying a material plane according to the coordinates of all points, and calculating the center coordinates of the plane of the material. The depth image of the material is acquired at the viewing angle of the carrying robot through the depth camera, the plane of the material can be identified through image processing and analysis, and the coordinates of the geometric center of the materialin the three-dimensional coordinate system can be calculated, so that visual guidance is provided for the carrying robot, the carrying robot can grab the material according to the center point of thematerial, and the material is guaranteed to be uniformly stressed, balanced and the like in the carrying process. In this way, the carrying robot can be free of the auxiliary of constructors, materialconveying is independently completed, and potential safety hazards are eliminated.
Owner:GUANGDONG BOZHILIN ROBOT CO LTD
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