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90 results about "Emergency unit" patented technology

Self-diagnostic circuitry for emergency lighting fixtures

Electronic self-test and/or self-diagnostic systems particularly useful with emergency lighting fixtures, including exit signage having light emitting diodes as light sources and unit emergency fixtures powered with lead-acid batteries, the systems perform testing and diagnostic functions on the circuitry, power supply, charger and lamping of such fixtures either by manual or automatic initiation. Testing functions are provided through use of a programmable microprocessor, the diagnostic circuitry not only monitoring operation of charger/transfer circuitry but also controlling the charger/transfer circuitry to enable alternate strategies for alleviation of a given failure. In emergency mode of a light emitting diode exit sign, a microprocessor-controlled two-stage inverter is employed not only to power the LED light source, but also to efficiently power the microprocessor. Power to the microprocessor is controlled by the microprocessor itself and can therefore be discontinued after appropriate operation until mains power is restored, thereby effectively reducing power consumption to zero. System operation can be flexibly configured through use of a two-wire serial link between modular elements of the system. Incandescent emergency unit fixtures due to high drain rates and output loads require emergency mode operation through use of lead-acid batteries, thereby requiring voltage controlled charging and relay transfer, the self-test and/or self-diagnostic circuitry of the invention used with emergency unit fixtures thus differing in various respects from the circuitry employed for the LED exit signage fixtures and primarily in the need to measure both charge and discharge currents, the circuitry having a larger dynamic range in addition to a capability of measuring both positive and negative currents.
Owner:ABL IP HLDG

LED lamp and drive circuit

The present invention relates to an LED lamp and a drive circuit thereof, wherein, the drive circuit comprises a rectifying unit, a voltage reduction unit, constant-current drive unit and an emergency unit. In the emergency unit, the base electrode of a triode is connected with the output of the voltage reduction unit through a first divider resistance while the emitter of the triode is grounded;a second divider resistance is connected between the base electrode and the emitter of the triode; the collector electrode of the triode is connected with the grid electrode of an MOS tube; the source electrode of the MOS tube is connected with the output of an emergency power supply while the drain electrode is connected with the power input of the constant-current drive unit; a pull-up resistoris connected between the grid electrode and the source electrode of the MOS tube; and the positive electrode of a blocking diode is connected with the output of the voltage reduction unit while the negative electrode is connected with the power input of the constant-current drive unit. The present invention can guarantee that the constant-current drive unit can output current for driving LEDs to work and light normally even though alternate current fails.
Owner:OCEANS KING LIGHTING SCI&TECH CO LTD +1

Intelligent monitoring operation system based on environment monitoring and video monitoring

The invention provides an intelligent monitoring operation system based on environment monitoring and video monitoring. The system comprises environmental parameter monitoring equipment, video capturing equipment, a main control unit, an operating and control key, an emergency unit, a user terminal and storage equipment, wherein output ends of the environmental parameter monitoring equipment and the video capturing equipment are connected with the main control unit; the operating and control key is connected with the main control unit; an output end of the main control unit is respectively connected to the emergency unit, the user terminal and the storage equipment; and the main control unit can enable a user terminal to selectively display data acquired by the environmental parameter monitoring equipment and / or the video capturing equipment based on a command input by the operating and control key. While the monitoring operation system uses a video monitoring field menu, the monitoring operation system provides field environmental parameters and can operate and control according to change of the environmental parameters, so that the intelligent level of the monitoring system is greatly improved, and the monitoring operation system has very high application value for the intelligent monitoring of public places, such as a machine room, a warehouse, a shopping mall, an Internet bar and a railway station.
Owner:舒富喜 +1

Nuclear emergency unit state diagnosis and accident consequence comprehensive assessment method

The invention belongs to the emergency technology field of nuclear power plants of millions of kilowatts and provides a nuclear emergency unit state diagnosis and accident consequence comprehensive assessment method. According to the method, a nuclear emergency unit is divided into N rings from inside to outside from a reactor core. The method includes the following steps that: whether the secondring breaks is judged, and if the second ring breaks, a next step is executed, otherwise, monitoring is strengthened; whether the breakage occurs in a containment is judged, if the breakage occurs inthe containment, a next step is executed, otherwise, whether the fourth ring to the N-th ring are abnormal is judged; whether abnormal leakage occurs on the third ring is further judged, if abnormal leakage occurs on the third ring, the fourth ring to the N-th ring are directly warned against an abnormality, and monitoring is strengthened; and if the abnormal leakage does not occurs on the third ring, attention is paid to the pressure parameters of the containment until the pressure of the containment reaches a preset value, the leak rate of the containment is set, and from this movement, a warning is given about the abnormality of the fourth ring to the N-th ring, and at the same time, monitoring is strengthened. With the method of the invention adopted, multi-ring joint derivation is realized, automatic error correction can be realized after one ring or a plurality of rings are wrongly misdiagnosed, and therefore, the analysis and early warning of the consequences of nuclear accidents can be greatly enhanced.
Owner:DAYA BAY NUCLEAR POWER OPERATIONS & MANAGEMENT +2

A street lamp intelligent control system based on internet of things

The invention relates to the fields of internet of things, intelligent control and the like, in particular to an intelligent control system for street lamps based on the internet of things, comprisinga main control device, a street lamp control device and a sensor, and further comprising a control module, a daylight environment module and an emergency module. The control module comprises a control unit and an information unit. The daylight environment module comprises a daylight orbit unit and a deviation value unit. The emergency module comprises a holiday unit and an emergency unit; According to the time data recorded by each unit, the main control device calculates the turning on and off time of the street lamps controlled on the same day, and controls the turning on or off of the street lamps through the street lamp control device. The invention saves a large amount of human resources, realizes the full automatic intelligent control of the street lamp system, and can execute the street lamp control according to the emergency plan when various emergencies and emergencies occur. The system is more accurate, efficient, and reliable and saves a large amount of electric power resources through the program intelligent control.
Owner:广州珠江黄埔大桥建设有限公司 +1
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