97 results about "Rate of fire" patented technology

One embodiment of a trigger system with an integral selector for semi-automatic firearms. A selector allows the user to choose between two modes and rates of fire. A trigger (1) is made to allow passage of the lower portion of a selector cam (5) to the exterior of the firearm. A selector lever (6) is affixed to the lower end of the selector cam (5) on the exterior of the firearms action. Turning the selector lever (6) rotates the selector cam (5) which tilts a pivotal disconnector (3) on its axis, varying the amount of disconnector (3) engagement with a hammer (2). The variance in the disconnector (3) engagement causes the firearm to fire in one of two modes, firing one round with a trigger pull and resetting with trigger release, or firing one round with trigger pull, and firing another round with trigger release. Other embodiments are described.

A method of target specific fire fighting including the steps of providing a barrel assembly (10, 31), suitably in a pod (33), which is capable of firing a plurality of projectiles (11). Each projectile having containment (21) for matter or objects to be delivered to a target fire; loading the containments with matter or objects comprising fire retardants, dousing or extinguishing means; providing control means (37) for aiming and controlling the rate of fire of projectiles and/or quantity of the projectiles fired; and firing (34) the projectiles in a controlled manner from a remote location toward the fire so as to douse the fire. The barrel assemblies (31) of the projectile launching apparatus (33) are of the type having a plurality projectiles (11) arranged in-line within a barrel (12) and associated with discrete selectively ignitable propellant charges (13) for propelling the projectiles sequentially through the muzzle of the barrel (12).

The invention is a fire monitoring method and device based on all- direction computer vision, mainly making field monitoring by all-direction computer vision sensor, inputting the taken continuous all-direction image into the computer for continuous image processing and analysis, and obtaining a synthetic result by simple fire mode classification, flame area change characteristic judgment, flame shape change characteristic judgment, flame color characteristic judgment, flame flickering rule characteristic judgment, whole flame motion characteristic judgment and fire intensity characteristic judgment, making different processings according to the calculation and synthetic judgment quantized values to reduce false alarm rate of fire. And the invention provides a truly original, quicker, accurater, more reliable multiparameter intelligent fire monitoring method and device.

The invention relates to a fire rescue method utilizing indoor wireless positioning technology. When a fire breaks out, every person in trouble utilizes a smartphone in hand or a prepared mobile terminal which is stored in a office to communicate with a wireless communication base station which is installed in a building, a physical position of the smartphone or the mobile terminal is determined through both-way communication between the smartphone or the mobile terminal and the wireless communication base station, position information and identification information of the smartphone or the mobile terminal are received through the wireless communication base station and sent to a monitoring host, the monitoring host utilizes the wireless communication base station to collect location information of firefighters, and meanwhile collects information of all smoke sensors and fire door sensors, and all the smoke sensors and all the door sensors are arranged in the building and send related information to people in trouble and rescue personnel. The fire rescue method utilizing indoor wireless positioning technology has the advantages that the people in trouble and firefighters are informed of the scene of the fire in a two-way transparent mode, and success rate of fire rescue and escape rate of persons in trouble are improved to a great degree.

An electro-pneumatically operated paint ball gun operates without the use of a mechanical sear, and includes a pneumatically operated hammer assembly effective to bump open a discharge valve and fire the gun. A programmable, microprocessor-based controller allows default values for time intervals of operation of the gun to be programmed, and also allows a user of the gun to access and change default values so that the operation of the gun can be modified to better meet the user's preferences. A cyclic rate of fire of as much as 30 paint ball shots per second or more is possible with a paint ball gun according to this invention. Further, a retrofit kit assembly provides for conversion of a conventional “autococker” type of paint ball gun into a gun embodying the present invention.

The invention discloses a mountain fire monitoring and recognizing method and device based on a 360-degree panoramic infrared fisheye camera and belongs to the technical field of forest fire monitoring and recognizing. The method is mainly characterized in that infrared images collected by the 360-degree panoramic infrared fisheye camera, the temperature value and smoke concentration are combined, processed and analyzed, wherein the temperature value and the smoke concentration are collected in a corresponding region, so that analyzed features are applied to a recognition model for recognition, and whether a fire breaks out in the monitoring region is judged. The device comprises a data acquisition module, a data control module, a data transmission module, a data processing module, a data storage module and a power management module. The mountain fire monitoring and recognizing method and device overcome the interference of natural light and the like in the fire recognition process, and the missing report rate and the false alarm rate of fires are lowered.

The invention discloses a fire hazard alarm safety protection system and method based on a UV and image detection technology. Detected UV radiation data of a monitored area is received, the safety state of the monitored area is pre-determined, and whether UV waveband data carried by flames exist is determined; and image data of the monitored area and a UV data analysis results are received, when it is determined that the UV waveband data carried by the flames exist, the image data is identified, and whether a fire hazard is generated is determined. A UV detector and a monitoring pick-up head are compounded together, under a normal condition, the monitoring pick-up head only carries out normal safety monitoring work, and an image identification algorithm is not started for secondary determination unless the UV detector detects fire hazard signals. A two-stage fire hazard detection mechanism is employed, the correct rate of fire hazard identification is improved, useless calculation of a computer is also reduced, and waste of resources is avoided.

The invention discloses a forest fire prevention monitor method and a forest fire prevention monitor system. According to the method, a collected current forest video image is acquired, the acquired current forest video image is applied to a preset mixed Gaussian background model, a background image corresponding to the current forest video image is generated, the current forest video image and the background image corresponding to the current forest video image are subjected to differencing so as to generate a current background differential image, and the generated current background differential image is applied to a preset smoke-fire object detection algorithm to acquire smoke-fire object information. By applying the forest fire prevention monitor method and system, the false alarm rate of fire prevention monitor can be lowered, and the fire monitor accuracy is improved.

The invention relates to the field of planning and dispatching of a power grid, and discloses a method for dispatching power grid pitch peak capability based on large-scale wind power sychronization. The method comprises the following steps: (1) setting the pitch peak capacity provided by hydropower for wind power as F, and the sum of wind power and hydropower as a definite value, F plus Q; leading Wa plus Wi to be more than or equal to (F plus Q) multiplied by 24, conducting pilot calculation on maximum output Fa of wind power allowed by the power grid; (2) substituting Fa into an analog computation model run by a given power grid system, carrying out calculation to obtain load rate of fire power with a light load and a difference F fire between fire power output and fire power minimum output under the load rate, which are taken as the pitch peak capacity provided by the fire power for wind power; and (3) when F fire is less than 0, decreasing wind power output Fa value capable of being balanced by hydropower, and repeating the step (2) until F fire is more than or equal to 0, thus obtaining the total pitch peak capacity provided by the given power grid system for wind power: total F equals to Fa plus F fire, wherein total F is wind power capacity capable of being integrated into the given power grid system.

The invention relates to a self-extinguishing rescuing intelligent system based on fire-fighting early warning, which comprises a central management platform, a distributing and storing platform, a mobile phone and a wireless monitor, a monitor point and a monitor center, a database service platform and the distributing and storing platform, wherein the mobile phone and the wireless monitor are mutually connected and the monitor point and the monitor center are mutually connected respectively by a public network or private network. The system has the advantages that the networked self-extinguishing rescuing for fire-fighting, the informationized management, and the modernized, scientific and digitalized city fire-fighting monitoring management are realized; the whole preventing and treating capability for local fire-fighting is increased and the function of preventing first is performed so as to eliminate fire hazard in budding stage; the hidden danger rate and incidence rate of fire hazard are reduced; the level of modernized monitoring conduction equipment of public security fire-fighting headquarter is promoted; the purpose of scientifically enhancing warning function is realized; the conduction and fighting capabilities of troops are increased; the electronic and informationized development of each work of the public security fire-fighting headquarter is boosted; and the working efficiency is increased.

The invention relates to a fire detection, prevention and control system of an electronic control cabinet. The fire detection, prevention and control system comprises a data acquisition device, a fire extinguishing device and a main control device which are arranged in an electronic control cabinet body, wherein the data acquisition device is used for acquiring detection data of each detection node in the electronic control cabinet in real time, and transmitting the detection data to the main control device; the fire extinguishing device is used for accepting a control signal sent by the main control device, and carrying out fire control and processing on an area with a fire early warning; a fire extinguishing control module is used for sending a control signal to the fire extinguishing device according to the instruction of a CPU (central processing unit) core module. The invention further discloses a control method based on the system. The control method comprises the following steps: transmitting the CO and smoke concentration acquired in real time to the CPU core module; processing by a pre-detection data filter model to obtain a characteristic extraction value; if fire early warning standards are met, sending an early warning or starting the fire extinguishing device. The fire detection, prevention and control system and the control method disclosed by the invention are capable of performing real-time detection on a small space such as the electronic control cabinet, eliminating fire in the bud, and reducing the false alarm rate of fire early warning.

The invention discloses a multi-information fusion fire hazard detection method, comprising the following steps: preprocessing is carried out on a fire hazard detection signal sequence obtained by site period sampling, and unreasonable data generated by normal environmental change is removed; a gray model GM (1, 1) is built according to the preprocessed original fire hazard detection signal sequence, and fire hazard detection signal data at follow-up time points is predicted, so as to obtain an equal dimensionality new information gray prediction model; the original hazard detection signal sequence is utilized to carry out posterior check on the fire hazard detection signal data obtained by prediction, so as to check whether the fire hazard detection signal data generated by prediction on gray prediction model is qualified or not; and a diagnosis neural network is utilized to diagnose the qualified fire hazard detection signal time sequence data, so as to obtain a fire hazard detection result. By means of the invention, reliable fault diagnosis can be provided and the false alarm rate of fire detection result can be reduced.

The invention discloses a manufacturing method for a monolithic integrated device of an electrical absorption modulator and a self-pulsation laser, which comprises the steps of: selecting an indium phosphide substrate; manufacturing a multiple-quantum-well active region on the extension of the indium phosphide substrate; manufacturing a grating on the multiple-quantum-well active region; growing optical limiting layers on the multiple-quantum-well active region and the grating; growing electrical contact layers on the optical limiting layers; manufacturing P-surface electrodes on the electrical contact layers; transversely manufacturing two electrode isolating channels on the P-surface electrodes; installing a first distributing feedback laser of the self-pulsation laser between the two electrode isolating channels; installing a second distributing feedback laser of the self-pulsation laser on one side; installing the electrical absorption modulator on the other side; thinning the substrate; manufacturing N-surface electrodes on the bottom of a whole pipe core; evaporating and plating a high-reflection film on one end of the pipe core; and evaporating and plating an anti-reflection film on the other end to finish the manufacture of the device. The invention reduces the power loss and the manufacturing cost of a ROF (Rate Of Fire) system emitter, and enhances system stability.

A paintball gun provides a double-acting trigger apparatus including a pair of finger engagement surfaces against which a user of the gun may employ a pair of trigger fingers. The user of the paintball gun may effect a firing operation of the gun by using either one of the two fingers to pull the trigger. Consequently, rapid firing operations of the gun are effected by dithering the two trigger fingers in rapid alternating motions to apply pressure on and off the two trigger engagement surfaces. Further, the paintball gun includes a programmable, microprocessor-based controller allowing the gun to be fired in response to a chosen discreet event in time. This chosen discreet event may include the opening and/or closing of a pair of switch contacts, for example; or the making or breaking of an electrical circuit effected between conductive components of the paintball gun. Movements of the double-acting trigger apparatus will result in plural discreet events separated in time, so that plural rapid-sequence firing operations of the paintball gun may be accomplished. Accordingly, a very high cyclic rate of fire is possible with a semi-automatic paint ball gun according to this invention.

The invention provides a mine underground adaptive fire grading early-warning method and system. The mine underground adaptive fire grading early-warning method comprises the following steps that S1,marked sample data are selected for BP neural network training; S2, a BP neural network model is optimized through a migration learning strategy, and an output layer parameter subjected to fine-adjusting training is obtained; and S3, the collected parameter value is input, and the fire early-warning grade corresponding to the parameter value is output through the optimized BP neural network model.In the step S2, the BP neural network model is optimized through the migration learning strategy, then the judgment capability during a fire can be preserved, the non-fire situation in a mine can also be distinguished, thus the accuracy rate of fire grading early-warning of the mine is increased, the situations of false report and report missing are reduced, and the adaptive function of fire grading early-warning in complex environments such as the mine and a construction tunnel is effectively achieved.

An weapon system comprising: a plurality of barrels, wherein the barrels are disposed coaxially around a main shaft and wherein the barrels are held in place by at least one barrel rack; and a plurality of intermeshing, counter rotating cylinders, wherein the cylinders include a central hole for the main shaft or a lower shaft and a plurality of coaxial half-holes disposed around the central hole at the edge of the cylindrical shape to form a chamber when the cylinders mesh. An ammunition belt comprising: a first and second ammunition case, wherein each ammunition case comprises: a casing having a first and second end, wherein the first end is adapted to receive and hold a primer and the second end is adapted to receive and hold propellant and a projectile, wherein the first ammunition case is attached to the second ammunition case.

The invention provides a limited duration fire hazard monitoring device and method based on a short message service of a Beidou satellite positioning system and relates to the field of wireless communication and signal detection. The limited duration fire hazard monitoring device and method aim at solving the problem that under the circumstance that mountain patrollers leave after using fire, the place where fire is used has a reignition hazard and is difficult to monitor. Infrared monitoring equipment is used for monitoring the environment around a monitoring point, once a fire behavior is found, the monitoring point is positioned through the Beidou satellite positioning system, and meanwhile position information is reported to a monitoring center and nearby mountain patrollers in a short message mode or a short wave mode or the like. The limited duration fire hazard monitoring device and method effectively solve the problem that effective latter hazard monitoring is difficult after fire is used in a forested area. The limited duration fire hazard monitoring device and method are suitable for conducting fire monitoring and fire point positioning on areas where the occurrence rate of fires is high.

The invention discloses a double-revolving-chamber caseless ammunition gun, comprising a gun barrel, a gunlock, a percussion lock, a counter-recoil lock, a firing lock and a bullet pushing lock. The gun is characterized in that a horizontal-axis-type revolving chamber body with two parallel chambers is arranged at the rear of the gun barrel; the gunlock and the counter-recoil lock are arranged successively behind the revolving chamber body; the bullet pushing lock is arranged behind bullets to be pushed. The counter-recoil lock drives the two chambers of the revolving chamber body to align to the gun barrel and the bullets to be pushed alternately and drives the bullet pushing lock to push the bullets; the gun lock is used for locking and unlocking the chambers; the percussion lock is used for performing percussion; and the firing lock is used for controlling safety as well as the single shot and continuous shot of the bullets. By adopting the scheme of the invention, the two chambers can fire alternately and the chamber body can be changed rapidly, which can thoroughly eliminate the problems of high-temperature ablation of chambers of caseless ammunition guns and the like. The double-revolving-chamber caseless ammunition gun is simple in structure and processing, small in size, weight and vibration, and can improve precision, firing rate and reliability.

The invention provides a fire-fighting lance which is capable of passing through wall barriers under the conditions of pressure and flow rate of fire-fighting water and is high in water yield. The fire-fighting lance can reach the technical performance of a common fire-fighting lance without being additionally provided with power and equipment and is capable of passing through the barriers such as walls; when a hole in which the lance can enter is formed through cutting in the wall, the lance can spray water into the barriers through the hole; and the fire-fighting lance is generally used in a relative airtight environment and can achieve the purpose of rapid fire fighting by cooling through evaporation and diffusion of water and accelerating the reduction of oxygen content in a burning area.

The invention discloses a compressed nitrogen rotary foam proportional mixing fire extinguishing system, which relates to the technical field of fire extinguishing systems and mainly consists of a nitrogen cylinder group, a foam mixed liquid tank, a mixer, a control system, a rotary compressed nitrogen foam nozzle and the like. The compressed nitrogen rotary foam proportional mixing fire extinguishing system of the present invention does not need municipal electricity to open the fire fighting system, and has wide applicability, especially suitable for urban tunnel fire extinguishing. The system uses an independent mixer to mix nitrogen and foam liquid without mixing in any pipeline. The mixing is uniform and the mixing time is short. After the mixing is completed, it is sprayed out by each injection device on the pipeline system. There is no need for any suction device on the injection device, which simplifies the overall structure. The compressed nitrogen foam after mixing has strong fire extinguishing ability and time Short, can greatly reduce the combustion temperature of the fire scene, reduce the casualty rate of the fire.