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108 results about "Measure duration" patented technology

Duration is a measure of the sensitivity of the price -- the value of principal -- of a fixed-income investment to a change in interest rates. Duration is expressed as a number of years. Bond prices are said to have an inverse relationship with interest rates.

Device for the analog/digital conversion of a measuring voltage

The invention relates to a device for the analog / digital conversion of a measuring voltage (Ue), said device comprising an analog / digital converter (1) provided with an integrator (2) with an operation amplifier (OP1), a resistance (R) and a capacitor (C) in the feedback loop. A reference voltage (Uref) is applied to the inverting input of the operation amplifier (OPI), and the measuring voltage (Ue) is applied to the non-inverting input of the operation amplifier (OPI). The capacitor (C) is charged during a charging phase of the period (t1) and discharged during a discharge phase of the period (t2). The analog / digital converter (1) also comprises a comparator (3) which is mounted downstream from the operation amplifier (OPI), a memory element (4) which is mounted downstream from the comparator (3), a time generator (6) for generating the charging time (tl), and a counter (8), said counter (8) detecting the edges or the duration (T = tl + t2) of the pulsewidth-modulated output signal (Uout) generated at the output by the A / D converter (1). The inventive device is also provided with a synchronisation element (5) that synchronises the edges of the pulsewidth-modulated output signal with the clock pulse of the counter (8) at least over a pre-determined measuring period (X).
Owner:EHNDRESS KHAUZER GMBKH KO KG

Process for automatically detecting the throughput of a network, particularly of the can bus type and for configuring with the detected throughput by transition analysis, and corresponding device

A process for automatically detecting throughput of a network by a device. The network transmits a signal on which messages are carried that include bits of length LBIT and of a dominant or recessive type. The process includes the following successive steps: (a) the device goes into a listen mode; (b) the device obtains a triplet of successive transitions in the signal transmitted on the network, the triplet delimiting a first and second signal level, one dominant and the other recessive; (c) the device measures the duration, expressed as a period TH number of a clock of the device, of each of the first and second levels; (d) as a function of the measured durations of the signal levels, the device obtains a new throughput configuration by determining values for parameters that define the bit length LBIT; (e) the device validates the new throughput configuration; (g) if the device detects that at least one throughput adaptation condition is verified, it goes into a normal mode, otherwise it obtains a next transition of the signal, which delimits with the last previous transition a new level of the signal, it measures the duration of the new level and it reiterates steps (d) to (g) taking account of the new signal level.
Owner:ATMEL CORP

Water channel flow velocity and flow rate measuring method, device and system

The embodiment of the invention discloses a water channel flow velocity and flow rate measuring method, device and system. The system comprises an unmanned aerial vehicle, a processor which carries out data transmission, and a radar chronograph. The processor automatically plans a flight course of the unmanned aerial vehicle according to position information of each measuring point, measuring duration and a preset flying height so that the radar chronograph installed on the unmanned aerial vehicle can measure the flow velocity of each measuring point of a water channel to be tested during a flight process according to the flight course, and measurement data is sent to the processor through the unmanned aerial vehicle. The processor calculates and acquires the flow rate of the water channel to be tested according to the measurement data of the radar chronograph, the cross-section information of the water channel to be tested, water level data information, each preset flow measurement parameter value, and the position information of each measuring point. In the invention, water channel flow measurement operation can be remotely performed, a potential safety hazard of water channel flow velocity and flow rate measurement is eliminated, the personal safety of hydrological test personnel is ensured, and the efficiency and the accuracy of the water channel flow velocity and flow rate measurement are increased, which is good for improving hydrologic monitoring quality.
Owner:瞭望者科技集团有限公司

Multi-target laser distance meter

The invention relates to a laser distance meter (1) which has a laser light source (5) for emitting time-modulated laser light (13) to target objects (15, 17), a light detector (7) for detecting laser light reflected by the target objects (15, 17), and an electronic control and analyzing unit (9) for controlling the laser light source (5) and for analyzing signals of the light detector (7). The light detector (7) is designed to directly scan laser light which is modulated with frequencies ranging from 10 MHz to 5 GHz, preferably 100 MHz to 1.5 GHz, in a synchronous manner. The laser distance meter (1) is characterized in that the electronic control and analyzing unit (9) is designed to carry out the following method steps: actuating the laser light source (5) in order to emit laser light (13) at a plurality M of at least 20, preferably at least 100, distinctly different modulation frequencies fm (m = 1... M) in a successive manner, detecting the laser light reflected by the target objects (15, 17) by directly scanning the laser light in a synchronous manner over a measurement time duration [delta]t, and generating a detection signal lm for each of the modulation frequencies fm; carrying out a Fourier transformation with respect to each of the detection signals lm in order to generate a discrete transit time spectrum Lm; and evaluating the transit time spectrum Lm in order to ascertain at least one distance D between the laser distance meter (1) and at least one of the target objects (15, 17).
Owner:ROBERT BOSCH GMBH
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