摘要:
Disclosed are methods and systems for amplitude digitization of nuclear radiation pulses. The method includes: applying a constant fraction discrimination (CFD) timing process on a subject current signal and outputting a CFD timing signal; applying a shaping process on the subject current signal to obtain a subject shaped signal; comparing, from a time To, values taken at the same time by the subject shaped signal and a dynamic threshold signal, and taking a time Tot as an over-threshold time if the value of the dynamic threshold signal changes from less than the value of the subject shaped signal to not less than the value of the subject shaped signal at the time Tot, wherein a time length between the time To and the arrival time Td of the subject current signal is preset as ΔT; converting a time length between the time Td and the time Tot into a digital quantity as a digitized value of the amplitude of the nuclear radiation pulse; wherein for any two subject shaped signals having amplitudes Vot1 and Vot2, respectively, the dynamic threshold signal satisfies an equation Tot 2 - To Vot 2 = Tot 1 - To Vot 1 , Tot1 represents an over-threshold time for one of the subject shaped signals compared with the dynamic threshold signal, and Tot2 represents an over-threshold time for the other of the subject shaped signals compared with the dynamic threshold signal.
摘要翻译:公开了用于核辐射脉冲幅度数字化的方法和系统。 该方法包括:对目标电流信号应用恒定分数判别(CFD)定时处理并输出CFD定时信号; 对被摄体电流信号施加整形处理以获得被摄体成像信号; 从时间To比较由对象整形信号和动态阈值信号同时获取的值,并且如果动态阈值信号的值从小于该阈值的值,则将时间Tot作为过阈值时间 被摄体整形信号不小于在时间Tot处的被摄体成像信号的值,其中,被摄体电流信号的时间To与到达时间Td之间的时间长度被预设为DeltaT; 将时间Td和时间Tot之间的时间长度转换为数字量作为核辐射脉冲幅度的数字化值; 其中对于分别具有幅度Vot1和Vot2的任何两个被摄体成像信号,动态阈值信号满足等式Toten 2 2 - ToVoté2 2 = Tot 1 2 - Tot 1 Tot 1表示过阈值 与动态阈值信号相比,对象成像信号之一的时间,Tot2表示与动态阈值信号相比的对象成形信号中的另一个的过阈值时间。
摘要:
A 1-(substituted aryl)-5-trifluoromethyl-2-(1H)pyridone compounds and pharmaceutical acceptable salts, preparation methods and uses for preparing the drugs for treating fibrosis thereof.
摘要:
A wind-power generation system with an over-speed protection is disclosed. The system is provided to convert wind energy into mechanical energy by a wind turbine, and mechanical energy is converted into electric energy by the wind turbine driving a generator. Also, electric energy is delivered to a power grid. The wind-power generation system mainly includes an AC crowbar, a fuse, and a DC chopper. The AC crowbar or the DC chopper is provided to consume superfluous energy outputted from the generator, thus providing an over-load operation to brake the wind turbine when the wind turbine operates under a first stage over-speed operation. Finally, the generator is isolated from the generator-side converter by disconnecting the fuse when the wind turbine operates under a second stage over-speed operation.
摘要:
The disclosure discloses a method for managing a Personal Network (PN), which includes: realizing a management for the PN by any one of management ways including establishing the PN, releasing the PN, adding a PN device in the PN and enabling the PN device to leave the PN or a combination thereof. The disclosure also discloses a system for managing a PN, which includes a management unit for realizing a management for the PN by any one of management ways including establishing the PN, releasing the PN, adding a PN device in the PN and enabling the PN device to leave the PN or a combination thereof. By adopting the method and system of the disclosure, the management for the PN consisting of a large number of PN devices can be realized.
摘要:
The present invention relates to a low offset and fast response voltage controlled current source, controlling method, and a power supply thereof. In one embodiment, a voltage controlled current source can include: a clock signal generator, a first operational amplifier, an input offset eliminator, a sampling and holding circuit, and an output circuit. The input offset eliminator can receive a clock signal, an input voltage, and a feedback voltage, and can (i) store and then eliminate an input offset of the first operation amplifier, and generate an error signal in accordance with an error between the input and feedback voltages when the clock signal is active, and (ii) generate the error signal in accordance with the stored input offset and the error between the input and feedback voltages when the clock signal is inactive.
摘要:
A method and a device for searching a personal network service are provided. The method includes: obtaining a primary keyword used for searching a service content by a Personal Network Equipment (PNE), generating an auxiliary keyword according to configuration information of the PNE, transmitting the auxiliary keyword generated and the primary keyword to a personal network server; and searching the service content by the personal network server according to the auxiliary keyword and the primary keyword, and providing a search result to the PNE; or, obtaining a search result generated by performing a search by a personal network server according to a keyword used for searching a service content by a PNE, generating a filtering condition according to configuration information of the PNE, filtering the search result generated by the personal network server and providing the search result filtered to the PNE. By means of the method, the PNE can rapidly and effectively search the service content interested by a user, and a higher searching accuracy can be obtained.
摘要:
This invention relates to a detection system for measuring a fluorescent signal in a fluorescent assay. The system comprises a probe having a small sensing surface bound with a fluorescent label, and a light source and a detector both mounted at the proximal side of the sensing surface of the substrate. The invention also relates to a method for detecting an analyte in a liquid sample using a probe tip having a small surface area (≦5 mm) and a high molecular weight polymer (≧1 MD) having multiple binding molecules and multiple fluorescent labels. The binding reaction is accelerated by flowing the reaction solutions laterally and moving the probe tip up and down in the reaction vessels. The invention furthers relates to a fluorescent labeling composition comprising a cross-linked Ficoll molecule having a plurality of binding molecules and a plurality of fluorescent labels.
摘要:
Disclosed are a method and system for video compression, wherein the video encoder has low computational complexity and high compression efficiency. The disclosed system comprises a video encoder and a video decoder, wherein the method for encoding includes the steps of converting a source frame into a space-frequency representation; estimating conditional statistics of at least one vector of space-frequency coefficients; estimating encoding rates based on the said conditional statistics; and applying Slepian-Wolf codes with the said computed encoding rates. The preferred method for decoding includes the steps of; generating a side-information vector of frequency coefficients based on previously decoded source data, encoder statistics, and previous reconstructions of the source frequency vector; and performing Slepian-Wolf decoding of at least one source frequency vector based on the generated side-information, the Slepian-Wolf code bits and the encoder statistics.
摘要:
A system and method is described for rapid charging and power management of a battery for a meter. A charger component is operably associated with the meter and is capable of executing a rapid charge algorithm for a rechargeable battery. The algorithm includes monitoring for a connection to an external power source and implementing a charging routine of a battery at a first charge rate and then at a second charge rate. The second charge rate is lower than the first charge rate. A temperature rise in the rechargeable battery due to the first charge rate has a negligible heat transfer effect on the fluid sample. The meter can also include a power switch for controlling current flow to a battery fuel gauge. The power switch is open when the meter enters into a sleep mode. The state of battery charge is determined after the meter exits the sleep mode.
摘要:
An electrical connector assembly (100), comprises: an insulative housing (2) having a plurality of passageways (24) arranged into a first row and a second row; a plurality of terminals (3) received into the corresponding passageways of the insulative housing and divided into a first terminal group (31) and a second terminal group (32), and each terminal having a terminating section (303) at a rear end thereof, the terminating sections of the plurality of terminals located on a common plane; a spacer (4) assembled to a rear end of the insulative housing and having a row of grooves (421) formed on an upper surface thereof, the terminating sections of the terminals passing through the spacer and received into the corresponding grooves of the spacer; and a metallic shell (5) assembled to an outer surface of the insulative housing and the spacer.