232results about How to "Improve the alarm effect" patented technology

A vehicle brake effect motoring and alarm system belongs to the technical field of vehicle electron and safety. The outputs of a vehicle brake pedal displacement sensor and a vehicle brake pressure sensor are respectively connected with the input of an information collection and control unit; the output of the information collection and control unit is connected with the signal input of an alarm device. Due to being corresponding to the stroke of a brake pedal, the information collection and control unit carries out evaluation on the brake effect risk degree R of the vehicle according to a vehicle brake pressure signal BPact that is actually collected by the information collection and control unit as well as a benchmark brake pressure signal BPline2, and gives an alarm to a driver by transmitting a signal to an alarm device according to the evaluated risk degree R. The information collection and control unit is Motorola MC9S08DZ60. The vehicle brake effect motoring and alarm system improves the reliability of the system, has great help on preventing the traffic accidents caused by the losing and reducing of the brake effect, can adopt grading alarm according to the damaged degree of the brake performance, is simple in system structure, is easy to be achieved and has low cost.

The invention discloses a fiber bragg grating perimeter intrusion behavior identification method and system based on time domain envelopment analysis. The method comprises the following steps of receiving an outside vibration signal demodulated by a fiber bragg grating demodulation instrument; intercepting a signal with a fixed time span when the difference of a fluctuation value of the vibration signal and a preset average value is a specific value; pre-processing the intercepted signal to reduce the influence of system noise to the system; performing Hilbert transformation to the pre-processed signal to obtain a time domain envelope signal; framing the time domain envelope signal and acquiring characteristic parameters of framed time domain envelope signals; performing mode recognition of vibration behaviors according to characteristic parameter values and preset characteristic parameter threshold values; and generating alarm information and sending the information to a linkage device if the characteristic parameter values meet preset alarm conditions. The fiber bragg grating perimeter intrusion behavior identification method and system based on the time domain envelopment analysis is high in sensitivity on recognizing intrusion behaviors, strong in environment-resisting capacity, good in alarm performance and low in false alarm rate.

The invention discloses an intelligent on-line liquid level monitoring and early warning system. The intelligent on-line liquid level monitoring and early warning system is composed of a data center and at least one liquid level monitoring and early warning subsystem, and is characterized in that the liquid level monitoring and early warning subsystem comprises a liquid level monitoring point, a liquid level monitoring host and a monitoring repeater; the liquid level monitoring host is used for carrying out continuous monitoring on the liquid level monitoring point, generating monitoring data and transmitting the monitoring data to the monitoring repeater according to a changeable transmission time interval, and the monitoring repeater is used for receiving the monitoring data and transmitting the monitoring data to the data center according to the changeable transmission time interval; the data center is used for processing the received monitoring data to obtain status data and various curves of the liquid level monitoring point and displaying and releasing the status data of the liquid level monitoring point in real time. By means of the intelligent on-line liquid level monitoring and early warning system, on-line liquid level monitoring, short-message warning, waterlogging early warning, short-time forecasting, monitoring data public release and the like can be carried out on points such as a drainage pipeline, a drainage channel, a drainage inspection well, a drainage exit, an urban sunken road, an urban underground parking garage and urban receiving water.

This method and device are used for the underwater cabins, e.g. dived sightseeing submarine to comm. and wreck alarm (CWA) with the commending ship or the dock control station. This underwater audio CWA device possesses simple circuit, compact structure, reliability, and efficiency. It saves energy, costs low and is easy to miniaturize. It adopts sideband CWA mode, co-uses the receiving modulating and emitting demodulating circuits. It not only builds an underwater audio comm. channel, but also offers a wreck alarm channel. The audio alarm signal offers position info for the searching and succoring ships. This system is also equipped with a recorder with a waterproof and stress-durable shell. This recorder records and stores all CWA audio info of whole process to offer an original info for the happened wreck analyzing. These meet the requirement of the effective safety measure submitted by the modern ship verification and raises the safety of the underwater tasks.

Boiler intelligent control system and its multi-kind coal controlling means belong to the computer management and control technical field, comprising data collection system, intelligent controller and warning system, industrial control computer,, data communication network, long-distance monitoring service, real-time Ethernet interface, data management system and different kinds of coal burning calculation and management system, especially real-time Ethernet interface and 'fixed furnace / movable furnace model have solved data transmission and multi- furnace teamwork problem; the multi-kind coal controlling means is, after entering the chosen kind of coal, the system will automatically choose its neuronic network or calculate the first wind rate, the second wind rate and fuel quantity with different load, build the initial neuronic network and learn online, realizing the boiler controlled automatically, changing and satisfying manufacturing parameter requirement also, adding long-distance monitoring service, increasing production management level.

The invention relates to a comprehensive topological optimization method. According to the method, network topological optimization is divided into two phases, firstly, the running state of a current system is determined; before running of the network topology of the system, the invention provides a topological optimization algorithm based on node criticality, which is used for quantitatively computing the criticality of each node in the topology, and keeping node variance in the whole topology within a certain range, so that the impact caused by invalidation of each node is effectively reduced, and the robustness of the network topology is improved; after the network topology of the system runs, a topological optimization method based on credibility and weighting load flow is provided to perform quantitative computation on the credibility of each node and the weighting load flow of each link, and keep the credibility of the node and the weighting load flow of each link at a certain level, so that the topology can be well optimized and can find a certain node or the fault of a certain link rapidly.

The method includes following steps: searching generated parent-child alarm; saving the searched parent-child alarm to current parent-child alarm table temporarily; based on relativity rule of parent-child alarm, dynamic analyzing whether the parent-child alarm is needed to report, and defining status indication of parent-child alarm; based on analyzed result to eliminate relevant alarm. The method can mask out child alarm at level of net element, and can reduce redundant child alarm from source of alarm, providing good effect for eliminating child alarm.

The invention discloses an indoor power distribution cabinet with an alarm function. The indoor power distribution cabinet comprises a casing body. An alarm lamp and a carbon dioxide gas storage tankare arranged at the top of the casing body. An air outlet pipe is arranged at the bottom of the carbon dioxide gas storage tank. The air outlet pipe passes through the casing body and is connected with a first joint. A hollow plate is arranged on the other end of the first joint. A first through hole is arranged in the lower surface of the hollow plate. A smoke sensor and a temperature sensor arearranged on the top end of the inner wall of the casing body. The temperature sensor is located at the right side of the smoke sensor. A ventilation hole is arranged in the right side of the casing body. A filter screen and a first fan are arranged inside the ventilation hole. The first fan is located on the right side of the filter screen. A second fan is arranged on the bottom end of the casingbody. The second fan is connected with an intake pipe through a second joint. The other end of the intake pipe passes through the inner wall of the casing body and is connected with an air purifier. According to the invention, the problem that a fire risk in the existing indoor power distribution cabinet cannot be treated in time is solved, and the indoor power distribution cabinet has the advantages of high safety and high practicability.

The invention relates to a combustible gas leakage alarm, belonging to the field of combustible gas safety detection. A combustible gas sensor can be used for detecting the gas leakage, and the detection results are converted into the change of voltage. Then, an acoustic, optical and electric warning circuit can be controlled by a comparison circuit, an amplitude limiting circuit, etc. When gas leakage occurs, the user is prompted by the combustible gas leakage alarm to take measures, so that accident is prevented. According to the service condition, threshold can be flexibly set and adjusted, thus being higher in accuracy.

The invention relates to a linked elevator control method for preventing elevator entering and ascending of an electric vehicle based on semantic segmentation. The method comprises the steps that (S1)a control unit receives an elevator image shot by an image collection device and judges whether an elevator stays in a door-opened state, the control unit detects whether the electric vehicle existsin the image if the elevator is in the door-opened state, and a warning is sent if the electric vehicle exists; (S2) the control unit detects whether the elevator is started, and the control unit undertakes an initiative right of the elevator if the elevator is not started; (S3) the control unit re-receives an elevator image shot by the image collection device and judges whether the electric vehicle still exists in the elevator image, and whether the electric vehicle exists in the elevator is judged if the electric vehicle exists in the image; and (S4) if the electric vehicle is in the elevator, the control unit controls the elevator to stay still and open the door. The method provided by the invention effectively prevents a resident from taking the electric vehicle into the elevator and safeguards safety of the elevator and the resident.

The invention provides an automatic energy supplied wireless transmission pyroelectric sensor and an automatic energy supplied wireless transmission fire alarm system, which aim at the current situation that all the existing fire alarms adopt external power sources or internal batteries to supply power, and develop the automatic energy supplied wireless transmission pyroelectric sensor which is based on a novel thermoelectric material, the electrical signal which is generated when a thermoelectric power generation module is triggered is used as the power supply and the detection signal, and accordingly, the troubles of pre-wiring and frequently battery changing are avoided. The whole fire alarm system does not have the external power supply, a sensor organizes a network by self to realize the remote signal transmission and receiving. An intelligent microprocessor at the receiving end of the fire alarm system finally determines the dangerous position through comprehensively analyzing and processing a plurality of signals, so the real-time monitoring of the multipoint fire is realized. After the automatic energy supplied wireless transmission fire alarm system is adopted, the constraint of the power supply can be eliminated, so a power-free fire alarm function is realized.

The invention discloses an operation and maintenance service management method and a management platform. The management method includes a state acquisition step, a state analysis step, a fault alarm step, a fault locking step, and a fault removing step. The management platform includes a state acquisition module, a state analysis module, a fault alarm module, a fault locking module, and a fault removing module. Unified, concentrated, standard and normalized monitoring and warning are realized for the business systems of a gas enterprise. The ability and efficiency of operation and maintenance management are improved. The level of information service is enhanced. Stable and reliable support and guarantee are provided for the informatization of gas enterprises. Detailed and accurate basic data is provided for the informatization development of gas enterprises. Moreover, the method and the platform have outstanding advantages, such as being systematic, advanced, open, practical, economical, scalable, stable and safe.

The invention discloses a measuring device of blank pile height, containing a protective fixing device, a free swing device, a swing degree detection device and a signal output device; the protective fixing device is used for installing the swing device, the swing degree detection device and signal output device, meanwhile providing protective function. The free swing device comprises a shaft and a swing. The shaft is fixed on the protective fixing device and the swing can swing with a certain degree around the shaft so that the size of the degree is limited by the protective fixing device. The shape and weight of the swing should be designed according to the degree of measured blank and blank pile sloping surface so that the swing can be pushed deviating from the position of free sag to the position that a swing angle detection device can detect when the blank pile sloping surface rises to the position of the swing. The signal output device is used for providing alarm signal output, and sometime the swing angle detection device simultaneously has signal output function.

Provided is a rearview mirror with concealed and light-transmittable turn signal light, which is applicable to a vehicle to provide a function of a rearview with light reflection achieved with a reflector, and in addition, an outer cover of the rearview mirror is structured to allow for emission of light of turn signal therethrough so as to also provide a function of alarming for driving safety. The outer cover is made of a light-transmitting material and the outer cover has a surface that is subjected to sputtering to form a sputtering-coated film thereon. The outer cover receives therein a light casing, which is fixed to a minor base of the review mirror by fasteners. Electrical wires extend along a rearview mirror bracket to connect to the light base. The mirror base and the light casing are coupled to each other.

The invention discloses a material disconnection warning device for a conveyer belt, which comprises a protective fixing device, a free swing device, a swing angle detecting device and a signal output device. The protective fixing device is used for mounting the free swing device, the swing angle detecting device and the signal output device, and provides protection function at the same time; the free swing device comprises a shaft and a pendulum, wherein the shaft is fixed on the protective fixing device, the pendulum can rotate around the shaft within a certain angle, the angle changes along with change of thickness of a material on the conveyer belt, and length and shape of the pendulum are selected according to size of the conveyer belt; and the signal output device is used for providing warning signal output, and sometimes, the swing angle detecting device has single output function synchronously.

The invention belongs to the technical field of gas sensors, and relates to a gas sensor based on a metal molybdate nanocomposite and a preparation method thereof. An annular gold electrode of the sensor is coated with a metal molybdate nanocomposite film; the specific preparation process of the metal molybdate nano composite material comprises the following steps: firstly, preparing MoS2 powder from ammonium molybdate, thiourea, ammonium fluoride and the like according to a hydrothermal synthesis method, and meanwhile, preparing a semiconductor metal oxide suspension from semiconductor metalsalt through the hydrothermal synthesis method; carrying out hydrothermal synthesis on the molybdenum sulfide powder and the semiconductor metal oxide suspension liquid to obtain a molybdenum sulfidenano composite material precursor, and calcining the prepared molybdenum sulfide nano composite material precursor in an atmosphere to obtain a metal molybdate nano composite material. The ethanol gassensor has the advantages of high selectivity, high sensitivity, good stability, long service life, short response time and recovery time to ethanol gas, excellent performance, and rapid and timely ethanol gas alarm.

The invention provides an oscillatory type automobile rear-end alarming device and belongs to the field of safe driving assisting technology of automobile. The invention comprises an alarm controller and an oscillatory type pedal mechanism. The alarm controller comprises a CAN communication module, a microprocessing unit and a drive circuit. PCANtx and PCANrx pins of the CAN communication module PCA82C250 are connected with PCANtx and PCANrx pins of the SCM of the microprocessing unit MC9S08DZ60. The CAN communication module is provided with a general-purpose type interface, and can be incorporated into a vehicle-mounted CAN network. The input PWM1 of the drive circuit SN7407N is connected with the corresponding output of the microprocessing unit. The output port of the drive circuit is connected with the motor of the pedal mechanism. The invention gives an alarm through the vibration of feet of a driver with little influence on the driver. Graded alarm can be adopted; the mechanical structure is simple and can be achieved easily with low cost, and the invention is highly compatible and humanized, and facilitates processing and refitting of large quantities.

The invention relates to an accurate moving alarming and positioning device based on physical buttons. The accurate moving alarming and positioning device comprises a mobile terminal and a server, a button switch used for controlling starting and stopping of an alarming and positioning module is mounted on the mobile terminal, a processing circuit chip used for converting click action of the button switch into digital signals is arranged on the mobile terminal, and the mobile terminal exchanges data with the server through wireless communication. The accurate moving alarming and positioning device has the advantages that starting and stopping of the alarming and positioning module on the mobile terminal are controlled through the button switch, processing of alarming information sent out by the mobile terminal and positioning estimation of position of the mobile terminal are realized through the server, and alarming of moving position is realized, so that area limitation of conventional wired alarming equipment is eradicated, an alarming function can be quickly started, higher imperceptibility is realized, and alarming effect is better than common alarming action; the processing circuit chip transmits button events, so that higher reliability than a wireless transmission mode is realized.

The invention discloses a server and a clock realization method thereof. The method comprises: a server connected to a network determines equipment connected to the network, and an identifier of the equipment that has a voice playing module and is connected to the network is added to an available clock device list and is stored; alarm clock information pushed by an input device connected to the network is obtained by the network, wherein the alarm clock information includes alarm clock time, an identifier of an alarm clock needing to be awakened, and a ringing file; and the alarm clock time is compared with current time; and when the alarm clock time is consistent with the current time and the identifier of the alarm clock needing to be awakened is determined to be in the available clock device list, the alarm clock corresponding to the identifier is controlled to play the ringing file by the network. On the basis of the mode, the ringing and alarm effect of the alarm clock is good; and thus the good user experience can be provided.

The invention discloses a household security system. The household security system is characterized by comprising a master control module, a human body recognition module, a human body data storage module, a human body detection device, a security module and an alarming module, wherein the master control module controls the human body recognition module, the human body data storage module, the human body detection device, the security module and the alarming module respectively, the human body detection device is used for detecting indoor human body signals and sending data to the human body recognition module, the human body recognition module carries out recognition and comparison according to data stored in the human body data storage module, the security module is used for automatically locking doors and windows, and the alarming module is used for sending alarming information to a terminal. Through the method, the household security system can promote alarming effect, and is strong in adaptability, convenient to use and good in expandability.

The invention relates to the technical field of automatic control of automobiles, in particular to a system for preventing children from being locked in a vehicle based on an on-board self-diagnosis system. Infrared detection sensor; a controller connected to the on-board self-diagnosis system interface, the controller receives the signal detected by the on-board self-diagnosis system whether the vehicle is turned off and locked, if it is turned off and locked, the controller sends a command to make all When the human body infrared detection sensor is turned on, the controller simultaneously receives the signal of whether there is someone in the car detected by the human body infrared detection sensor. The present invention can be easily installed on the existing vehicle, realizes the alarm by using the vehicle-mounted self-diagnosis system and the CAN bus, the cost is low, and the alarm is timely.

The invention discloses a gas supply monitoring and alarming device which comprises a shell, a main-supply gas source pressure gauge, a stand-by gas source pressure gauge, a gas output pressure gauge,a gas switching control display screen, a gas purity analysis display screen and a remote alarm, wherein the gas switching control display screen is embedded in the shell and is used for switching and displaying the communication of a main-supply gas source or a stand-by gas source and a gas output pipeline; the gas purity analysis display screen is embedded in the shell and is used for detectingand displaying the gas purity of the gas output pipeline; and the remote alarm is arranged on the shell. When any one of the pressure of the main-supply gas source, the stand-by gas source or the gasoutput pipeline is deviated from the threshold range representing security, the remote alarm gives an alarm and automatically sends an alarm signal and information to a terminal. The gas supply monitoring and alarming device can clearly display and easily control gas switching, gives efficient early warning, and has strong industrial and medical application value.

The invention relates to an intelligent alarm system and a method for community property. The system comprises an information processing module, a network communication module, and a plurality of homeintelligent terminals. The network communication module comprises a first gateway device and a plurality of second gateway devices, and is connected with the first gateway device. Each second gatewaydevice is connected with the home intelligent terminals which are in the detection range of the second gateway device. The plurality of second gateway devices is in communication connection with thefirst gateway device to complete the network communication connection between the information processing module and the home intelligent terminals. The information processing module is internally provided with an operating system and an upper computer program developed based on the operating system. The home intelligent terminals detect various alarm information in the room in real time and transmit the alarm information to the information processing module in real time. Reminding and querying are carried out through the upper computer program, so that property personnel can receive and process the alarm information in time.

The invention discloses a high-sensitivity self-feedback type alarm circuit for a gas sensor, and belongs to the electronic fields of gas sensors, alarms and the like.A gas-sensitive resistor of the semiconductor gas sensor and a source electrode and a drain electrode of a field effect transistor are serially connected with one another to form the high-sensitivity self-feedback type alarm circuit, and a grid electrode of the field effect transistor and the source electrode or the drain electrode are connected with each other by a series resistor or without the series resistor according to the polarity of the field effect transistor and the polarity of the semiconductor gas sensor to form a self-feedback circuit.The high-sensitivity self-feedback type alarm circuit is powered by direct-current test voltages, and increased divided voltages of the gas sensor and the field transistor or increased divided voltages of the field effect transistor and series resistor are used as alarm voltages to be outputted.The sensor works at the room temperature, or resistance wires are heated by the aid of a heating power source, so that the sensor can work at specific temperatures.The high-sensitivity self-feedback type alarm circuit has the advantages that the high-sensitivity self-feedback type alarm circuit has an obvious self-feedback characteristic as compared with the traditional gas sensor and fixed load resistor series connection mode, and the sensitivity of the high-sensitivity self-feedback type alarm circuit can be greatly improved.

The invention relates to an intelligent electric control tissue box which comprises a tissue box body (1), a tissue box base plate (2), a top plate (4), a control module (5), and a power supply (6), an electric control telescopic rod (7), a pressure sensor (8), a distance measuring sensor (9) and a voice alarming module (10) which are respectively connected with the control module (5), wherein a base of the electric control telescopic rod (7) is fixedly arranged on the upper surface of the tissue box base plate (2); the telescopic rod mobile end of the electric control telescopic rod (7) is fixedly connected with the lower surface of the top plate (4); the pressure sensor (8) is arranged on the lower surface of a tissue drawing opening (3); the distance measuring sensor (9) is arranged at the edge position of the upper surface of the top plate (4). The intelligent electric control tissue box keeps the top of a tissue be contact with the lower surface of the tissue drawing opening (3) of the tissue box, and subsequent tissues of the drawn tissues can be supplied into the paper drawing opening (3); the distance measuring sensor (9) is adopted to detect a tissue use-up state, so that the working efficiency of the tissue box is guaranteed.

The invention discloses a wireless alarming method and a wireless alarming system based on a network camera, which comprises a wireless transceiving sensor, a network camera, a telephone alarming host, a distant alarming terminal, and a managing website; as a setting control web page that is relevant to the alarming and a user can log in through the internet is preset on a Web page in the camera, thus the user can set the annunciator by logging in the Web page in the camera through using a browser; therefore usage and operation is very convenient for the user; when the annunciator is triggered, on the one hand, the alarming telephone number is dialed by the telephone alarming host through a telephone dialing manner; on the other hand, a real-time image of the alarming site is unfolded at the distant alarming terminal set in an alarming center (e.g. a security institution and a station house, and the like) to examine the alarming condition of the site. Not only the alarming is prompt, but the shortcomings of small alarming scope and tendency of mistaken alarming in a traditional telephone alarming device are eliminated. The wireless alarming method and the wireless alarming system are characterized in that the alarming setting is convenient; the application, installation and debugging are easy; the disposing cost is low; the alarming effect is good.

The invention discloses an intelligent fire extinguisher cabinet. The intelligent fire extinguisher cabinet comprises a cabinet body, a cabinet cover, a first cylinder, an alarm, a circuit controller, a smog alarm, a second cylinder, a limiting plate, a fire extinguisher tank, a spring, a top plate and limiting holes, wherein the cabinet cover is hinged to the upper end of the cabinet body; the first cylinder is fixedly arranged on the rear surface of the inner wall of the cabinet body; the alarm is fixed on the cabinet body; the circuit controller is fixed on the inner wall of the cabinet body; the circuit controller is electrically connected with the smog alarm; the second cylinder is fixedly arranged on the rear surface of the inner wall of the cabinet body; the limiting plate is fixed on a piston rod of the second cylinder; the fire extinguisher tank is fixedly arranged on the bottom of the inner wall of the cabinet body; the spring is fixed on the bottom of the fire extinguisher tank; the top plate is fixed on the upper end of the spring; and the front and rear surfaces of the fire extinguisher tank are separately provided with the corresponding limiting hole. The intelligent fire extinguisher cabinet has the advantages that fetching is convenient; an alarm effect is obvious; and the like.

The invention discloses an anti-theft method, device and system for an automobile. The anti-theft method, device and system aim at improving the anti-theft effect. The method includes the steps that a server receives a defence organizing instruction sent by a user terminal and sends the defence organizing instruction to an automobile-mounted terminal corresponding to the user terminal, so that the automobile-mounted terminal is triggered to obtain an automobile state message and send the automobile state message to the server; the server monitors the automobile state message sent by the automobile-mounted terminal, if no automobile state message sent by the automobile-mounted terminal is monitored in a preset time period, an alarming message is sent to the user terminal; and if the automobile state message is monitored in the preset time period, whether the received automobile state message is abnormal or not is judged, and if the received automobile state message is abnormal, the alarming message is sent to the user terminal.