52 results about "Multiple integration" patented technology

Designs and operational methods to increase the dynamic range of image sensors and APS devices in particular by achieving more than one integration times for each pixel thereof. An APS system with more than one column-parallel signal chains for readout are described for maintaining a high frame rate in readout. Each active pixel is sampled for multiple times during a single frame readout, thus resulting in multiple integration times. The operation methods can also be used to obtain multiple integration times for each pixel with an APS design having a single column-parallel signal chain for readout. Furthermore, analog-to-digital conversion of high speed and high resolution can be implemented.

A multiple integration hypothesis C/A code acquisition system resolves bit boundaries using parallel correlators providing magnitude hypotheses during acquisition to reduce losses over the 20 ms integration period to improve the performance and sensitivity of C/A code receivers to achieve low C/No performance using inexpensive, imprecise oscillators and long noncoherent dwell periods, well suited for in-building, multipath, and foliage attenuated GPS signaling applicable to E911 communications with several dB of additional improvement in receiver sensitivity due to the ability to detect bit synchronization during acquisition.

A method for controlling a pixel may include first and second photosites, each having a photodiode and a charge-transfer transistor, a read node, and an electronic read element, all of which are common to all the photosites. The method may include an accumulation of photogenerated charges in the photodiode of the first photosite during a first period, an accumulation of photogenerated charges in the photodiode of the second photosite during a second period shorter than the first period, a selection of the signal corresponding to the quantity of charges accumulated in the photodiode of a photosite having the highest unsaturated intensity or else a saturation signal, and a digitization of the selected signal.

A flash ladar system has a laser provided with beam focusing optics for directing a laser fan beam pulse to a scanning element that in turn directs the laser fan beam to a vertical region of space. Light reflected from an object in the vertical region of space is directed by a reflecting element to a sensor provided with a column of photosensitive pixels that connects to a charge storage matrix of non-photosensitive pixels. After an integration period electrical charges are shifted from the photosensitive region to an adjacent column in the charge storage region. The process of integrate and shift is repeated for multiple integration periods until the charge storage region is filled with charges whereupon a serial shift register removes the information to be processed by a data processor.

The invention discloses a circuit capable of improving dynamic range of an image sensor and a control method thereof. An output end of a pixel integrating circuit is respectively connected with one end of a first switch and one end of a second switch, the other end of the first switch is respectively connected with an input end of a comparator and an input end of an accumulator, the other end of the second switch is respectively connected with an input end of the comparator and an input end of the accumulator, the other input end of the comparator is connected with reference voltage, an output end of the comparator is connected with an input end of a storage unit, and an output end of the storage unit is connected with the pixel integrating circuit. In multiple integration periods of a TDI (time delay integration), input optical signal intensity is judged according to the first integration period, integral capacitance is adjusted and a proper capacitor is selected according to optical signal intensity range, signals read in the second integration period to the nth integration period are accumulated, and accordingly, the dynamic range of a CMOS(complementary metal oxide semiconductor) image sensor can be expanded effectively and application range thereof is expanded simultaneously.

The invention discloses a method and device for sorting coal and gangue online through an image method and belongs to the technical field of identification of coal and coal gangue. The method for sorting the coal and gangue online through the image method comprises the following steps: acquiring image information of measured coal and gangue in different directions, respectively processing images, extracting outline information of the images and according to corresponding relations between outlines, calculating the volume of the coal and gangue by utilizing a multiple integration algorithm; acquiring weight information of the coal and gangue; calculating to obtain the density of the coal and gangue according to the volume and the weight of the coal and gangue, and comparing the density of the coal and gangue with set boundary values of densities of the coal and the coal gangue to judge whether the measured coal and gangue belongs to coal or coal gangue so as to achieve the purpose of sorting. The method and the device have strong real-time performance and high efficiency, are convenient to use, low in energy consumption and pollution-free.

The invention is suitable for the field of photovoltaic power generation technology, and provides a distributed photovoltaic power generating grid-connecting planning method and terminal equipment. The method comprises the steps of establishing a photovoltaic probability model and a load probability model; calculating an initial time sequence sample of each preset time period according to median Latin hypercube sampling, the photovoltaic probability model and the load probability model; calculating power distribution network node voltage probability distribution according to a multiple-integration approximation method, a Gram-Charlier grade number, a probability trend equation and the initial time sequence sample; and establishing a photovoltaic grid-connecting opportunity restraining planning model according to the power distribution network node voltage probability distribution. The distributed photovoltaic power generating grid-connecting planning method and the terminal equipment have advantages of improving distributed photovoltaic permeability, reducing integrated economic cost in a long-term planning process of the power distribution network, and improving voltage level in ashort-period operation process of the power distribution network.

A method for automatically ascertaining the number of persons and/or objects staying in a gate (10; 50; 70), said method having the following steps: Weight sensors (18, 20, 22, 24) in the floor detect weight data of persons and/or objects moving within the gate (10; 50; 70); value and according to the dynamics of the weight data, and/or according to the number of detected centers of gravity, and/or according to the position of the weight sensor (18,20,22,24) which has detected the weight data, and/or according to the weight sensor ( 18, 20, 22, 24) Check the sequence of weight data to ascertain the number of persons and/or objects.

The invention provides a smart refrigerator motion sensor calibration method, system and device and a medium. The method comprises the steps that motion sensing information is collected by a motion sensor; whether a refrigerator door is moving is judged based on the motion sensing information; if the refrigerator door is moving, a gyroscope collects angle sensing information, and a magnetometer collects first magnetic field sensing information; according to the angle sensing information and the first magnetic field sensing information, a magnetic field angle information mapping table corresponding to the first magnetic field sensing information and the angle sensing information is established; the door is repeatedly opened and closed; and the first magnetic field sensing information corresponding to each piece of angle sensing information in the magnetic field angle information mapping table is updated. According to the invention, the influence of a large object around a refrigerator on the reading of the magnetometer in the motion sensor and excessive error of long-time and multiple integration of the gyroscope can be avoided.

The invention relates to a low-noise and wide-dynamic range image sensor related multi-sampling circuit. An integrator in the circuit performs integration on a pixel signal output by a pixel output cache; when an integration result is less than a preset voltage threshold value, an integration control unit controls the integrator to perform the integration of the next cycle, or the integration control unit controls on-off of a read control switch so as to output a final integration result to an analogue-to-digital conversion unit, and the integration frequency is output to a data processing unit; the A/D conversion unit converts the final integration result into quantized result data and then transmits the quantized result data to the data processing unit; the data processing unit divides the integration frequency by the quantized result data to obtain the final sampling result data. The integration in different frequencies is performed aiming at different pixels so as to achieve an aim of performing multiple integration on a small signal and performing moderate integration on a big signal; the low noise and wide dynamic range of the image sensor can be realized at the same time.

The embodiment of the invention discloses a centralized control system comprising a centralized control server, database equipment, a system background management terminal and a plurality of business clusters. Each business cluster includes a cluster management terminal and a plurality of integration units. The centralized control server is used for managing the business of each business cluster. The database equipment is used for providing a data storage function for the centralized control server. The system background management terminal is used for configuring a management account number for each business cluster. The cluster management terminals are used for managing the multiple integration units in the clusters. And the integration units are used for receiving instructions from the cluster management terminals and completing the operations corresponding to the instructions. Therefore, a problem of centralized control and management of schools can be solved.

The invention provides a robust stability analysis method for an uncertain linear system with interval-varying time-delay, comprising: obtaining the nominal system of the uncertain linear system with interval-varying time-delay; constructing a Lyapunov-Krasovskii functional, and The functional determines whether the nominal system is stable, wherein the constructed Lyapunov-Krasovskii functional includes multiple integrals, and the derivative of the Lyapunov-Krasovskii functional is determined based on the Wirtinger type single and double integral inequalities and the convex combination method; in the nominal When the system is stable, the robust stability of the uncertain linear system with interval-varying time-delay is determined. Through the technical scheme of the invention, based on the constructed multiple-integral Lypunov–Krasovskii functional analysis, the robust stability of an uncertain linear system with interval-varying time-delay can be obtained, and less conservative results can be obtained.

The embodiment of the invention discloses a cascade STATCOM-based outer loop voltage control method and device. An outer loop calculation control link of double closed loop compound control for a cascade STATCOM is simplified through removing integral operation links of an interphase voltage-sharing link and an in-phase voltage-sharing link in an outer loop voltage PI control method, and technicalproblems that a proportional-integral controller (PI) controller has inadequate resistance to external disturbance, and the capacitor voltage oscillation phenomenon and system instability are easy tooccur due to the facts that the PI controller is usually adopted for traditional outer loop voltage control and relatively multiple integration links are included, especially a low transient responsespeed of an existing three-phase cascade STATCOM system is caused by the in-phase voltage-sharing link and the interphase voltage-sharing link and does not meet the actual engineering requirements are solved.

The invention provides an image sensor device and a manufacturing method thereof. According to the image sensor device, a first bonding part and a second bonding part are respectively manufactured, and finally the thermal compression bonding is carried out, so the production efficiency can be improved, and the problem of stress among multiple layers caused by multiple integration steps and the unreliability caused by multi-layer stacking deposition in the prior art can be avoided. Moreover, in order to improve the bonding reliability, a same bonding material is used as much as possible on a bonding surface for bonding, and peeling is prevented.