39results about How to "Safeguard public safety" patented technology

The invention relates to the technical field of video monitoring and discloses a method and a system for video driving intelligent perception and facing a safe city. The method includes the following specific steps: reading and processing monitored video images, conducting pedestrian detection on the processed video images, conducting face identification on the detected pedestrians, judging whether the faces are that of criminals wanted on the Internet for arrest and those causing society security instability potentially, conducting behavior detection of the detected pedestrians, judging whether abnormal behaviors exist or not, conducting abnormal gesture detection on the detected pedestrians, conducting sight tracking on personnel with abnormal gestures and finally conducting object leaving detection. The system formed and designed on the basis of the method includes a video collection module, an intelligent perception module and a decision alarming module. The method and the system utilize a computer to assist users to conduct real-time monitoring and management, adopt an intelligent software platform, automatically analyze potential hidden hazards and alarm, and are capable of dealing with problems before the problems happen.

The invention relates to unmanned warning control techniques and discloses an unmanned aerial vehicle warning control method and system. An unmanned aerial vehicle may transmit a signal out constantly during flight; based on the signal transmitted by the unmanned aerial vehicle itself, multiple receiving stations are provided, and the signal transmitted by the unmanned aerial vehicle is received by a signal receiving unit; an acquisition processing unit acquires the signal, processes the signal, recognizes the signal, extracts features and estimates parameters; a positioning tracking unit positions and tracks the unmanned aerial vehicle, extracts location and acceleration information of a target, and transmits to a warning monitoring unit; the warning monitoring unit predicts a location of next moment according to the current location and speed of the target, automatically recognizes whether the target is illegal or not based on the feature information of the target, automatically triggers warning if it is detected that the illegal unmanned aerial vehicle invade a flight 'restricted zone', and transmits shooting guide information to an expelling shooting unit, the expelling shooting unit shoots the illegal target, expels or shoots off the target, and accordingly warning monitoring and control are provided for the unmanned aerial vehicle.

The present invention discloses a portable adenosine triphosphate fluorescence detection device comprising a housing consisting of an upper housing and a lower housing, a cover capable of opening/closing and deposited above the housing, a liquid crystal window and a keyboard which are deposited at the upper housing acting as a panel of the device; a circuit board used for performing a fluorescence detection and mounted inside the housing, with a liquid crystal screen, a photodiode, a shielding case and a light trap metal block being mounted thereon, wherein the photodiode is arranged inside the light trap metal block with its the other terminal being connected to a test-tube repository, and a first microswitch and a second microswitch are also mounted at the circuit board. The control circuit comprises a fluorescence detection module, a data acquisition module, a human-computer interface, a power supply module, a control module and the like. Said fluorescence detection module is used for detecting the intensity of fluorescence generated by a reaction of ATP in living microorganism body and fluoresceins and luciferases in the detection reagent, and the data acquisition module is used for converted the fluorescence intensity detected into a digital quantity to ascertain the ATP content, then the presence and content of microorganism is capable of being indirectly ascertained by controlling system analysis and processing and saving data.

The invention provides a method and device for identifying smoking based on a video image, a server and a storage medium, and the method comprises the steps: obtaining a to-be-detected monitoring video, extracting a key image frame, and carrying out the human body posture feature extraction of the key image frame; identifying the to-be-detected monitoring video by utilizing the smoke identification model to judge whether smoke exists or not; utilizing a posture recognition model to recognize the extracted human body posture so as to judge whether a specific human body posture matched with theextracted human body posture exists in a posture library or not; if the smoke recognition model outputs that smoke exists and the posture recognition model outputs a recognition result that a specifichuman body posture exists, determining that a smoking event exists. According to the method and device, smoking events are monitored and recognized in time, the method and device can be widely applied to no-smoking areas such as schools, shopping malls, factories and urban public transportation places, rapid, real-time and online intelligent recognition and monitoring of illegal smoking behaviorsare achieved, public health maintenance is facilitated, public safety is guaranteed, and civilized cities are established.

The invention discloses a gamma camera for a gamma radioactive source positioning apparatus, which comprises a gamma camera housing capable of screening visible light, a collimator capable of transmitting or screening gamma ray, and a detector component, wherein the gamma camera housing is internally provided with an accommodating cavity, the gamma camera housing is configured to be capable of screening the gamma ray at the left, the right, the upper part, the lower part and the back of the gamma camera housing and allow the gamma ray transmitted from the front side of the gamma camera housing to be transmitted out of the gamma camera housing to enter into the accommodating cavity; the collimator is arranged at the front side of the accommodating cavity; and the detector component is arranged in the accommodating cavity, and the detector component is arranged at the back side of the collimator and is separated from the collimator at a preset distance to detect the gamma ray transmitted by the collimator. The gamma camera is simple and compact in structure, high in detection precision, and low in cost. The invention further discloses the gamma radioactive source positioning apparatus.

The invention provides a train control system CBTC service scheduling method and device based on communication. The train control system CBTC service scheduling method provided by the invention comprises the following steps: a terminal receives a resource allocation message sent by a base station, the resource allocation message is used for indicating transmission resources of services, the transmission resources are allocated by the base station according to service priorities, and the priorities of the CBTC services are higher than those of other services; And the terminal performs CBTC service transmission and/or transmission of other services with the base station according to the transmission resources of the services indicated in the resource allocation message. According to the communication-based train control system CBTC service scheduling method and device provided by the invention, the normal transmission of the CBTC service can be preferentially ensured, and thus a guarantee is provided for the rail transit safety.

The invention provides an algorithm for identifying and positioning crowd abnormal behaviors by utilizing accumulated light streams. The algorithm comprises the following operation processes: step 1,performing space-time structure analysis on crowd behaviors; step 2, establishing a crowd behavior space-time structure and an identification rule; step 3, carrying out crowd behavior identification and positioning through the monitoring video; and step 4, comparing experimental analysis and result evaluation, and giving an alarm for an abnormal event. According to the invention, research is carried out on crowd behavior analysis and identification highly related to emergencies; and real-time detection of emergencies is realized, and the algorithm is applied to real-time monitoring and post-event analysis of high-crowd-density public places, has great practical significance and economic value for construction of safe cities and guarantee of public safety, and has wide application prospectsin deployment and implementation of video monitoring systems in urban public places.

The invention relates to a network news based public opinion analysis method and system and a medium. The method comprises the following steps: decomposing network news texts into words by a word segmentation tool; screening out emotional words in the words according to the emotional words stored in an emotional dictionary; classifying the screened emotional words into positive emotional words andnegative emotional words according to the part of speech of the emotional words stored in the emotional dictionary; summarizing and calculating the positive emotional word quantity N<+> and the negative emotional word quantity N<-> respectively according to classification results; calculating the public opinion index AMS according to a summary result; marking network news according to the interval of the public opinion index. Public opinion of the network news is analyzed automatically according to a unified and objective standard, advantages of high efficiency and low error rate are achieved, accordingly, network public opinion information can be monitored timely, and the network news based public opinion analysis method and system have a positive effect on guarantee of public safety ofthe society, policy inspection and the like.

The invention provides a three-dimensional environment online monitoring system and method based on LoRa. The three-dimensional environment online monitoring system based on LoRa comprises: a data acquisition layer which comprises a plurality of LoRa acquisition nodes, wherein the LoRa acquisition nodes are preset at pre-segmented grid positions in a to-be-monitored environment, and each LoRa acquisition node sends the acquired environment information and the current geographic position information to a data management layer; a data management layer which comprises a LoRa gateway and a server,wherein the LoRa gateway is used for receiving data transmitted by each LoRa acquisition node and transmitting the data to the server, and the server is used for matching the current environment information at each geographic position with the corresponding historical information to predict environment change early warning information and determining standard-exceeding pollutants and the moving speed and direction of the standard-exceeding pollutants according to the change of the environmental information at all geographic positions at each time point; and a UI interface layer which is usedfor displaying the environmental change early warning information, the standard-exceeding pollutants and the moving speed and direction information of the standard-exceeding pollutants.

The invention provides an ATM intelligent alarm system ensuring urban public safety. The ATM intelligent alarm system comprises a microphone, a camera, a loudspeaker, a terahertz generator, a terahertz receiver, an MCU, an A/D conversion module, and a relay switch; the microphone, the camera and the loudspeaker are installed at an upper side of an ATM display screen; the terahertz generator and the terahertz receiver are positioned at a lower side cabinet at the front of the ATM; and the MCU, the A/D conversion module and the relay switch are installed inside the ATM. The system is established with an audio database, an expression database and a hazardous article database. Audios acquired by the microphone, expression information acquired by the camera, and belongings images acquired by the terahertz generator and the terahertz receiver are respectively compared with the three databases, when coincidence degrees reach certain threshold values, the MCU enables the loudspeaker through the relay switch to play robbery relevant law punishment warning audios, simultaneously police signals are transmitted to police departments, and staffs immediately carry out the arrests. The ATM intelligent alarm system is of great significance to urban safety maintenance and public safety ensuring.

The invention provides a saltpeter mixing and lead preparing integrated machine, which mainly comprises a chassis, a saltpeter feeding device, a lead reeling machine and an electric motor, wherein the saltpeter feeding device comprises two chemical hoppers for adding oxidant and reductant, and a saltpeter mixing hopper connected with outlets of the chemical hoppers; the saltpeter mixing hopper is provided with three layers of sieve structure; the sieve surface on each layer is provided with a rotary blade; and three rotary blades are driven by the electric motor to rotate; the outlet of a saltpeter cup is directed at a piece of lead paper. The saltpeter mixing and lead preparing integrated machine provided by the invention realizes integration of saltpeter mixing and lead preparing. The real-time saltpeter mixing process design avoids storage and transport of large amounts of mixed chemical powder in the existing process, and can achieve purposes of effectively preventing accident occurrence, guaranteeing public, personal and property safety and increasing labor productivity at the same time.

The invention discloses an intelligent patrol robot. The intelligent patrol robot comprises a robot body as well as a travelling device, a drive device, a detecting sensor, a loudspeaker, a control circuit board unit and a power supply unit which are arranged on the robot body, wherein the control circuit board unit comprises a communication module, a storage and a processor; the storage is used for storing performable computer program and data; the processor is used for calling computer program to perform; after judging that the detected target is a dangerous target, the intelligent patrol robot interacts with a plurality of pre-stored authorizers to judge whether to perform assisted processing action or not according to received authorized instruction information of the authorizers or toperform warning operation while authorized instruction information of the authorizers is not received, so that the intelligent patrol robot can timely get involved while detecting the dangerous target or detecting that an accident occurs, relieves harm and risk, and achieves the technical effect of guaranteeing public safety.

The invention discloses a lifting control device for vehicle release, and belongs to the technical field of traffic equipment. The lifting control device comprises a left mounting column, a right mounting column, a top beam, a release rod, a plurality of sliding mechanisms, lifting mechanisms and two pull rope chains, wherein the number of the lifting mechanisms is the same as that of the slidingmechanisms; a transverse sliding groove is formed between the two ends of the top beam, and a sliding rail is fixed in the transverse sliding groove; the plurality of sliding mechanisms are arranged in the transverse sliding groove and are connected with the sliding rail correspondingly arranged in the transverse sliding groove by bearings; each lifting mechanism is arranged in the transverse sliding groove, and is connected with the corresponding sliding mechanism arranged in the transverse sliding groove; one end of each pull rope chain is fixedly connected with the release rod, and the other end winds around the corresponding sliding mechanism and lifting mechanism to be fixedly connected with the transverse sliding groove, so that the sliding mechanisms are pushed by the lifting mechanisms to drive the pull rope chains to move in the transverse sliding groove. The device achieves the technical effect of timely adjusting limiting height according to demands of non-restricted vehicles and ensuring public safety of roads.

A deformable plastic check valve for sewer pipe is prepared from the elastic plastics resisting to ageing, acid and alkali, and has the elastic lower mouth with honeycomb structure, closed top end with a pull-up ring, and reinforcing rings on its external circumference. When water is flushed down, it isdeformed from draining the water and then elastically restored to its original shape. Its advantage is high sealing performance.

The invention relates to a public security monitoring robot which comprises a power supply seat and a power on portion. The power supply seat is internally provided with a sliding cavity, the right side of the sliding cavity is provided with jacks penetrated to the outside in the upper and lower portions respectively, a slide rack is installed in the sliding cavity in a left and right sliding way,through holes penetrating left and right are arranged in the upper and lower portions of the sliding rack respectively, a threaded rod is mounted in the slide rack in a threaded cooperative way, theright end of the threaded rod is rotatably mounted in the right side surface of the sliding cavity, the left end is connected with a power machine fixedly installed in the left side of the sliding cavity in a power cooperative way, the left side of the sliding cavity is provided with first grooves in upper and lower portions respectively, power-on ends connected to general power is fixedly mountedin the first grooves, each power-on end is provided with a jack whose opening towards to the sliding rack, the left side of the slide rack is provided with electric connection ends cooperated with the jacks in upper and lower portions, the internal side of each jack is fixedly provided with a telescopic electric connection end, the external side of each through groove is provided with a second groove portion, and each second groove portion is internally provided with a triggering end connected to the power machine.

The invention discloses a method for preparing a tree whitening agent from solid waste; by using shells, eggshells, cullet, waste ceramic polishing powder and desulfurized fly ash with wide material sources and low cost as raw materials, a film-forming substance and foam glass are prepared by using a one-pot sintering technique. According to the formula of the whitening agent, lime and biogel areused as film-forming substances, foam glass is used as a thermal insulation material, CO2 is cured by a hydration product, particulate matters in air are adsorbed, and the whitening agent has bactericidal and insecticidal properties. According to an eggshell-loaded MOFs photocatalyst, sulfur dioxide in air is degraded under the condition of natural illumination. For increasing the strength of thewhitening agent after hardening, sweet water is added for mixing; a preparation method of the sweet water comprises the steps of decocting water boiling sweet potatoes at a high temperature. Social benefits and environmental benefits of protecting trees, guaranteeing public safety and purifying air are achieved.