79results about How to "Improve measurement rate" patented technology

The invention relates to a method for the taking of a large number of distance images comprising distance picture elements, wherein electromagnetic radiation is transmitted in each case in the form of transmission pulses using a plurality of transmitters arranged in an array for each distance image to be taken and reflected echo pulses are detected using a plurality of receivers arranged in an array, with the respective distances of objects at which the transmission pulses are reflected and forming a distance picture element being measured by determining the pulse time of flight, wherein a plurality of individual measurements are carried out using a time measuring device connected after the receiver array for each distance image to be taken, in which individual measurements a respective pulse chain is processed which includes a logical start pulse derived from the respective transmission pulse and at least one logical receiver pulse formed from an echo pulse or a noise pulse, wherein the logical receiver pulses are each generated by means of at least one reference of the receiver, the reference being broken through by the underlying echo pulses or noise pulses, with an exceeding of the reference forming the positive flank of the receiver pulse defining an up event and a falling below of the reference forming the negative flank of the receiver pulse defining a down event, wherein, for each distance image to be taken, the associated pulse chains are formed in that the start pulses and the associated receiver pulses are each combined at the right time, the pulse chains formed in this manner are distributed over an array of time measuring channels formed by the time measuring device in accordance with a pre-settable measurement procedure, and, for each time measuring channel, the time durations are determined which, in each case with reference to a point in time before the start pulse, pass until a receiver pulse in that, for each up event and / or for each down event, at least the respective clock pulses are counted which are made available by a central clock at a known frequency, and the counter results are stored as an event list in an arrangement taking account of their respective time information, and wherein the stored event lists of all time measuring channels are read out and evaluated in order to convert the respective time information contained in the event lists into distance values corresponding to the distance picture elements.

A radar transmits electromagnetic energy in pulse repetition intervals and receives reflections from objects in range gates including Doppler filters. The radar approves desirable ambiguous echoes and suppresses ambiguous echoes of no interest or that interfere with the radar's display. The radar frequency varies according to a staggered or wobbling pattern. The ambiguous echoes produce one pulse in the range gates within a predetermined number of periods. The Doppler filter works with an impulse function response that includes a small number of samples. The Doppler filter, during the predetermined number of periods, gives rise to independent samples from reflectors within the radar's unambiguous range. When the independent samples exceed the small number of samples, the radar approves the ambiguous echo. Otherwise, it is suppressed. In this way, ambiguous echoes are prevented from interfering with the reception or display of echoes. The suppression of asynchronous interferences can be made easier.

A method for increasing the throughput, or the precision, or both the precision and the throughput, of a flow cytometer, or of a hematology analyzer employing a flow cytometer, and for further reducing the complexity of such a cytometer or analyzer, by utilizing the technique of laser rastering in combination with a lysis-free single-dilution method. Laser rastering involves sweeping a laser beam across a flowing sample stream in a hematology analyzer. A lysis-free single-dilution method involves performing all the flow cytometer measurements on a sample using a single aliquot, a single lysis-free reagent solution, a single dilution, and a single pass of said dilution through the measurement apparatus. An apparatus suitable for carrying out the method of this invention comprises an optical module comprising a source of light, a scanning device, a lens or system of lenses, a flowcell, detectors, and filters; and an electronic module comprising preamplifiers, analog signal conditioning elements, analog-to-digital converters, field-programmable gate arrays, digital signal processing elements, and data storage elements.

A system based on the continuous measurement (20) of the diameter of a cylindrical object (1) moving, laid down, on a belt conveyor (10) allows dimensional compliance of the latter object to be checked.The measurement system (20) may be coupled with a sorting system based on ejection out of the conveyor (10) by projecting a gas through a transverse nozzle (42).By means of the system according to the invention, it is possible to continuously determine whether a nuclear fuel pellet (1), in particular after rectification (2), has to be rejected or not.

This device comprises a pulsed laser source (6), means (8, 10, 12) for focusing light from this source onto an object to be analysed (2) to produce plasma on the surface of the object, means (16, 18) of analysing a plasma radiation spectrum, means (20) of determining the elementary composition of the object from this analysis, and possibly means (4) for displacing the object. The invention is particularly applicable to test radioactive materials.

In a method for regulating the power supply of a plurality of field devices S1, S2, S3, A1, A2, connected to a data bus DBL and supplied with electrical current over the data bus DBL, the electrical current requirements of the individual field devices S1, S2, S3, A1, A2 are determined, and the electrical current consumptions of the field devices S1, S2, S3, A1, A2 are adjusted by means of corresponding control signals. In this way, the electrical current consumption of individual field devices S1, S2, S3, A1, A2 can be centrally adjusted and therewith the process conditions matched.

The invention discloses a method for improving frequency measuring precision of a larmor signal of an Overhauser magnetometer and a circuit thereof. The circuit comprises an Overhauser sensor, a working substance exciting circuit, a conditioning circuit, an ADC (Analog Digital Converter), an FPGA (Field Programmable Gate Array), a data memory SDRAM (Synchronous Dynamic Random Access Memory) and an embedded controller. The measurement of the frequency of the larmor signal is converted into a frequency domain from a conventional time domain; frequency measurement is realized by using a method combined by an FFT (Fast Fourier Transform) algorithm and a CZT (Chirp Z Transform) algorithm: a rough frequency value of a current signal is obtained by using the FFT algorithm, and local narrowband spectrum zooming is performed by using the CZT algorithm in a narrowband range with the rough value as a central point so as to realize high-precision frequency measurement; the inherent defect of shaping error which occurs when a signal index is attenuated to the later stage in the existing hardware frequency measurement scheme is overcome, new error is not introduced, the frequency measuring precision of the magnetometer is improved to 0.001Hz, and the integral measuring speed of the instrument is improved while the frequency measuring effective time is increased; the upgrading of the frequency measuring scheme in the later stage is convenient, and the reconstruction cost of the instrument is effectively reduced.

The invention discloses a static smoothness detecting system and a static smoothness detecting method of a railway. The static smoothness detecting system of the railway comprises a client, a laser tracker and a rail detection trolley, wherein the client is communicated with the laser tracker in a wired manner, the client and the rail detection trolley are respectively connected with a wireless communication module, the rail detection trolley comprises a single chip, a displacement sensor, an inclined angle sensor and a target sphere, the displacement sensor is arranged inside a framework of the rail detection trolley, a measurement magnetic ring of the displacement sensor is linked with a moving end of the rail detection trolley, an X axis of the inclined angle sensor is parallel to a cross beam of the rail detection trolley, data measured by the displacement sensor and data measured by the inclined angle sensor are integrated onto the single chip by means of a serial mode, the target sphere is mounted on the rail detection trolley, and the client is communicated with the single chip through the wireless communication module. According to the static smoothness detecting system and the static smoothness detecting method of the railway disclosed by the invention, railway detection efficiency can be increased effectively.