47results about How to "Implement redundant functions" patented technology

The invention relates to the technical field of detector communication, more particularly, to a smoke detector based on an automatic addressing mode and a communication method. The smoke detector includes a fire controller FSDCU and n detectors FSD. The fire controller FSDCU and the detectors FSD each are provided with a port CAN#0 and a port CAN#1. The ports CAN#0 and the ports CAN#1 all have the function of receiving and transmitting a frame address. The fire controller FSDCU and the n detectors FSD are connected in sequence. The fire controller FSDCU and the adjacent detectors FSD are connected through independently set CAN buses and the adjacent detectors FSD are connected through independently set CAN buses. Each detector FSD is provided internally with a data transfer module. The received command frame addresses can be subjected to increment or decrement operation through the data transfer modules to distinguish the CAN frame addresses of the detectors. When the detectors receive CAN frames of different addresses, addresses of response frames are also different, the process of address encoding of the detectors is eliminated, and the system configurability is enhanced.

The present invention relates to a power supply architecture system of a desktop processor, comprising an adapter board arranged on the desktop processor, a first power supply branch circuit, and a system power supply for supplying power to the desktop processor through the first power supply branch circuit, The first power supply branch includes a first standby power supply sub-circuit, a first power supply sub-circuit and a second power supply sub-branch connected in parallel, the first standby power supply sub-circuit, the first power supply sub-circuit and the second power supply sub-circuit are respectively connected to the desktop processor and supply power to the desktop processor; the transfer base is connected to the first power supply sub-circuit, and the transfer base is connected to the The output voltage of the first power supply sub-circuit is converted to provide power for the desktop processor. By implementing the present invention, the redundancy function of the power supply structure of the desktop processor can be realized at a lower cost, while the utilization rate of the power supply can be improved, and the hot swapping of the power supply can be realized.

The invention relates to a train smoke alarm communication method based on an independent module combination 3U case structure, and the method comprises the steps: recognizing a carriage signal through an IO board card external address line, and extracting the detector configuration; enabling a detector to collect temperature information and smoke and thick fog information, and transmitting the information to a CPU board card for processing; enabling the CPU board card to judge the collected information, and outputting alarm information; enabling the CPU board card to transmit alarm information to an HMI display screen of a driver's cab after alarm; enabling the IO board card to cut off the signal output of a vehicle safety loop, transmitting the alarm information to the HMI display screen of the driver's cab, and enabling a red alarm indicating lamp of a DISP board card to be turned on; and enabling a DS board card, an Enet board card and a wireless board card to collect, store and upload the temperature information, the smoke and thick fog information and alarm information. When the detector communicates with a CAN board card, the method carries out the progressive addition or subtraction calculation of a CAN frame address of the detector through the forwarding mechanism of the detector. When the detector receives CAN frames with different addresses, the addresses of response frames are also different, thereby improving the configurability of a system.

The invention is applicable to the field of power supply, and provides a cold backup switching method, circuit and redundant power supply of a redundant power supply. The method includes: sampling the total output current, and determining the efficiency of the redundant power supply according to the current sampling value; judging the redundant power supply Whether the efficiency is lower than half load; if so, output the first or second cold backup control signal; disconnect the first branch according to the first or second cold backup control signal, and control the power output through the second branch; if not, Then output the first and second work control signals; close the first branch according to the first or second work control signal, and control the power output through the first branch; the voltage output by the second branch is lower than the voltage output by the first branch . The present invention controls a power supply to enter the cold backup state when the power supply efficiency is lower than half load, so as to improve the power supply efficiency, and when the normal power supply is switched to the cold backup power supply, the voltage output is always maintained, no need for a large capacitor buffer, and the reliability is high. low cost.