16 results about "Signal-to-noise ratio" patented technology

The invention discloses a fault diagnosis and online monitoring method for a draught fan master control system based on data driving, and belongs to the technical filed of fault diagnosis. The method comprises the steps of calculating control limits of normal data of the draught fan master control system; calculating statistical magnitude of fault data of the draught fan master control system; determining fault occurrence time T according to the relation between the statistical magnitude and the control limits and determining the variety contribution rate and the fault variety of each master control system in the collected fault data when determining the time T; calculating the signal to noise ratio, the number of principal elements and the statistical magnitude which correspond to the fault variety in real-time data of the draught fan master control system sequentially, wherein if the statistic magnitude is within the control limits, the draught fan master control system is normal in operating process, otherwise, a sensor which corresponds to the fault variety is adopted in a fault sensor. According to the fault diagnosis and online monitoring method for the draught fan master control system based on the data driving, the use of complicated modeling by mechanism and signal analysis of the draught fan is avoided; multiple faults in the same time frame can be monitored, and the fault capable of being found is multidimensional; the biggest signal to noise ratio is adopted to determine the number of the principal elements, and thus the monitoring sensitivity of the faults is improved.

The invention discloses an in-situ high-pressure confocal Raman spectrum measurement system, and belongs to the technical field of optical equipment. The structure of the system is provided with a laser light source (1), an objective lens acquisition system (2), a laser switching system (3), a Raman spectrometer (4) and a high-voltage system (5) according to a light path sequence. According to the invention, accurate Raman spectrum measurement can be carried out on a to-be-measured sample; various lasers can be freely added; the system is suitable for in-situ detection of samples under high pressure, and the collection efficiency is improved; the light path offset condition can be observed, and the inner light path can be adjusted in an auxiliary manner; and a laser switching system is designed in a light path, stray light can be strictly suppressed through the closed light path, and the signal-to-noise ratio is guaranteed.

The invention discloses a wide signal measuring method and device considering the signal-to-noise ratio, and belongs to the technical field of electronic reconnaissance and radar signal processing, and the method comprises the steps: receiving a wide input signal, carrying out the detection and amplitude comparison processing of the signal, when the signal amplitude is greater than a preset threshold value, controlling the gating of a branch 1, and directly outputting the signal, when the signal amplitude is smaller than the threshold value, controlling the gating of the two branches, and outputting the signal after being amplified; and controlling the input signal to be stabilized to a receiving standard power value through making the processed signal pass a numerical control damper. According to the method, the received wide signals are distinguished, it is guaranteed that the signal-to-noise ratio of the input signals is not deteriorated through different links, the error detection rate is reduced, meanwhile, rapid convergence and stable output of the amplitude are achieved, and the method is simple in link and gives consideration to economic benefits.

The invention discloses a resource multiplexing method and system based on URLLC service delay tolerance. The method comprises the following steps: a wireless access point sends SIB1 information to wireless communication equipment; when the wireless communication equipment generates the URLLC service requirement, scheduling information is generated, and the scheduling information is sent to the wireless access point; the wireless access point judges whether the URLLC service can tolerate the longest waiting delay under the slice frame structure; if not, the resource reuse scheme is configured to be based on an unlicensed mode; if yes, URLLC service type information is obtained, and whether the URLLC service of the wireless communication equipment is periodic or not is determined; if not, the resource reuse scheme is configured to be in an improved GB mode; if yes, the resource reuse scheme is configured to be in a GF mode. According to the invention, on the premise that the low-delay technical requirement of URLLC service is met, the occurrence probability that time-frequency domain resources of eMBB UE for transmitting data are preempted, punctured and punctured is reduced, and the throughput and the signal-to-noise ratio of the eMBB UE are further improved.