1233results about How to "Stable detection" patented technology

A road line recognition apparatus, including: an imaging section imaging a progress path of a own vehicle including a road to output a couple of images; an image processing section calculating a distance in a real space in a set region of at least an image on one side based on the imaged couple of images; and a detection section detecting a road line; wherein the detection section includes: a road line candidate point detection and conversion processing unit detecting a pixel on a road surface as a road line candidate point based on luminance and the distance with regard to the image on one side, and performing Hough conversion of the road line candidate point; a road line straight line detection processing unit detecting one straight line proper to the road line on each of a right side and a left side of the own vehicle based on at least a position or a behavior of the own vehicle between straight lines obtained by the Hough conversion; and a road line detection processing unit detecting the road line of a shape of a straight line or a curved line by recording a road line position which is a road line candidate point indicating a road line among the road line candidate points based on the detected straight line.

A stereoscopic liquid crystal display device having a touch panel and a method for manufacturing the same, wherein a stable touch detection can be performed without influencing the operation of a neighboring display panel or an electrically-driven liquid crystal lens, are disclosed.

An electromagnetic transmission and reception system comprises a transmitter section and a receiver section. The transmitter section has a first signal source, a second signal source at a lower frequency than the first signal source, and means for generating from the first and second signal sources a plurality of signals with fixed frequency spacing derived from the second signal source frequency. One or more pairs of the plurality of signals are selected, and for the or each pair, the signals of the pair are combined to derive an output signal having a frequency derived from the difference between the frequencies of the signals of the pair. The receiver section combines a received signal, which comprises a received version of the output signal, with a local oscillator signal for frequency down-conversion of the received signal. This local oscillator signal is generated by the transmitter section. This provides a system in which the generation of signals of the desired frequency is achieved by mixing signals of specific frequencies. The reception uses frequency down-conversion using the same signal sources as used for the transmission. This enables a low noise system to be implemented.

An immune chromatographic method includes fixing capture antigen or antibody directly on chromatographic film (PH) by physical absorption means, adding sample liquid and label antibody on sample cushion side of PF and forming immmune composite through immune reaction, detecting formed detection and control belts, sticking PE, sample loading cushion, label cushion and water absorption cushion in sequence on backing. The test paper is also disclosed.

A differential electrode is charged and discharged in the opposite phases. By obtaining the sum of stray capacitances of the differential electrode from charge/discharge characteristics, the approach or the position of an object is detected based on the stray capacitances from which noise is cancelled.

A driving lane recognition system which can improve the lane recognition accuracy by stably detecting the various kinds of lane markers is disclosed. An image processing means 6 for image-processing a road image taken by a camera 5 has a plurality of different kinds of image processing algorithms 9 to 11. A driving lane is detected by selecting an image processing algorithm suitable for the driving lane out of the plurality of different kinds of image processing algorithms 9 to 11 corresponding to a road on which a vehicle is running.

An inspection method and an inspection device, or apparatus each capable of conducting composition analysis of a defect detected by elastic or stokes scattered light, an inspection surface or defect on the surface of the inspection surface, or a defect on the surface of the inspection object and its internal composition. A surface inspection method for optically detecting elastic or stokes scattering or inelastic or anti-stokes scattered light from inside the surface of the inspection object, for detecting existence of defects of the inspection object and features of the defects, for detecting positions of the detected defects on the surface of the inspection object, classifying and analyzing the detected defects in accordance with their features on the basis of the positions of the defects and the features of the defects or the classification result of the defects.

A liquid state detecting apparatus including a detecting element which outputs a signal associated with a concentration of a particular component of a liquid contained in a liquid container; an abnormality determination unit which determines whether or not the liquid is in a particular abnormal state based on the output signal of the detecting element, a level detecting part which outputs a signal according to a level of the liquid contained in the liquid container; and a static state determination unit which determines whether or not the liquid in the liquid container is in a static state based on the output signal from the level detecting part, wherein the determination made by the static state determination unit is reflected in the determination made by the abnormality determination unit.

The present invention provides a power transmission control device, a power transmission device, and the like which can improve the precision for the foreign object detection. A power transmission control device provided in a power transmission device of a non-contact power transmission system comprises a drive clock signal generation circuit (25) that generates a drive clock signal DRCK specifying a drive frequency of a primary coil, a driver control circuit (26) that generates a driver control signal based on the drive clock signal DRCK and outputs the driver control signal to a transmission driver, a waveform detection circuit (30) that detects a change in waveform of an induced voltage signal PHIN of the primary coil L1, and a control circuit (20) that performs foreign object detection based on a detection result of the waveform detection circuit (30). Wherein, the drive clock signal generation circuit (25) outputs the drive clock signal DRCK set at a foreign object detection frequency F2 during foreign object detection, the foreign object detection frequency being a frequency differing from a normal power transmission frequency.

The contactless method of supplying power magnetically couples a portable device receiving coil with a power supply stand transmitting coil and transmits power by magnetic induction. The portable device sends power adjustment signals to the power supply stand, and the stand adjusts transmitting coil output based on the power adjustment signals. The portable device compares the power received from the stand to the required power, sends an increase-power-request signal if the received power is below the required power, and sends a decrease-power-request signal if the received power is above the required power. Power adjustment signals include increase-power-request weighting values that increase with the size of the request to increase power and/or rate-of-change weighting values that increase with the amount of change in the requested power. Weighting values output with a given period are added and a foreign object is judged to be present when the sum attains a set value.

In the on-vehicle radar apparatus of the present invention, the vertical scanning width of the radar beam is narrowed, before the horizontal scanning, thereby avoiding unnecessary data processing and improving the data processing efficiently. Further, the SIN ratio of the target detection signal is increased, thereby stabilizing the distance detection and its accuracy. The vertical scanning antenna is a single travelling wave excitation antenna (TWEA) constructed by a plurality of antenna elements. At the same time, the horizontal scanning antenna is a multi-channel antenna wherein a plurality of TWEAs is assigned to a plurality of horizontal directions. The horizontal scanning angle is arbitrarily widened by increasing the number of TWEAs.

The invention discloses a method for visually tracking a plane abut-jointed weld beam by a linear laser aiming at the complex condition of a welding site. The method comprises the steps of: building a weld beam tracking system, establishing a coordinate system model of each part of the weld beam tracking system, calibrating a system structure by adopting a checkerboard target and a point laser; passively scanning a weld beam by a linear laser, stable and accurately positioning a laser weld beam center by adopting a weld seam center detection technology; and flexibly changing the detection distance between a weld point and an image through setting delay time by a user. According to the method, the influence on the quality of the image by arc light and spattering can be effectively avoided, small breakage of a laser bar is effectively resisted, and automatic tracking of the plane abut-jointed weld beam is stably and accurately realized on line. The method has an important significance on realizing the welding automation.

A sheet feeding apparatus includes a stacker for stacking a sheet; a feeding device for feeding the sheet on the stacker to a predetermined processing position; a drive device for driving the feeding device; a double feed detection device having a sending element and a receiving element arranged at a downstream side of the feeding device for detecting a double feed of the sheet; a sensitivity adjustment device for comparing a detected value of the receiving element with a predetermined reference value for adjusting an output of the sending element; and a control device for controlling a transport speed of the feeding device. The sensitivity adjustment device adjusts the output of the sending element when the control device controls the drive device to stop the sheet or to decelerate the sheet at a predetermined speed.

An object detection system includes a radar detection means (2), an image detection means (3), and a collating means (4). The collating means (4) performs a collation between an object detected by the radar detection means (2) in a present collation and an object that has been determined as being detected by the radar detection means (2) and the image detection means (3) in a previous collation (S 10, S 11), further performs a collation between an object detected by the image detection means (3) in a present collation and an object that has been determined as being detected by the radar detection means (2) and the image detection means (3) in the previous collation (S 12, S 13) when it is determined that the identical object is detected by the radar detection means (2) and the image detection means (3) in the previous collation. Then the collating means (4) determines whether the radar detection means (2) and the image detection means (3) detect the identical object based on the collations (S 14).

The present invention provides a motor drive apparatus which improves a trade-off relation between a stable position detection and noise at its driving. A sensorless drive operation circuit calculates by operation a zero cross point (point p) of a voltage of a position detection phase at the next interval, using time information measured based on an output signal from a comparison circuit at the previous interval and the present interval. After the point p has been calculated, points a and b are detected by interrupting a predetermined time drive current.

The invention relates to a manufacturing method of a graphene-porphyrin modified electrode and application of the electrode, aiming to solve the problems of complex operation, long time and relatively high price in the conventional method for detecting the content of ascorbic acid in a living body. The method comprises the following steps: I, preparing pre-oxidized graphene; II, preparing a graphene oxide solid; III, preparing acyl-chlorinated graphene; IV, preparing tetraphenylporphyrin; V, preparing 5-(4-nitro)-10,15,20-triphenyl porphyrin; VI, preparing 5-(4-amino)phenyl-10,15-20-triphenyl porphyrin; VII, preparing a pure manganese porphyrin coordination compound; VIII, preparing a functional composite material of graphene oxide and porphyrin; IX, modifying a glassy carbon electrode. The modified electrode has excellent interference resistance, stability and reproducibility, and can be taken as a biosensor for detecting ascorbic acid in practical samples.

The invention discloses a mercury ion detection reagent and a detection method. The reagent comprises nano sol, nucleic acid adaptors marked by Raman active molecules and a charge modifier. The detection method comprises the following steps of: firstly, synthesizing the nano sol, then adding a proper quantity of adaptors to a proper quantity of fresh nano sol and uniformly mixing; continuing to add a proper quantity of charge modifier and uniformly mixing; then adding a sample to be tested and incubating for 1-5 minutes; and finally, taking the nano sol to test a Roman scattering spectral signal and carrying out data processing. In the invention, based on the addition of Hg<2+>, the structures of the nano particle surface nucleic acid adaptors are changed, i.e. nano particle aggregation in the silver sol and surface enhanced Roman scattering signals of signal molecules are enhanced. In the invention, the SERS (Surface Enhanced Raman Scattering) technology is adopted, the detection limit to the Hg<2+> is at the nmol/L level, thus the invention has the advantages of high detection speed of the linear response range of Hg<2+> concentration and high selectivity and is suitable for the quick detection of trace Hg<2+> in environmental water.

In a drive of a stepping motor, an electromotive force is generated on the coil of a motor with a sinusoidal wave having the same period as an energization period by smoothly rotating a rotor with microstep driving, and an induced power is stably detected by detecting the electromotive force at the zero cross of driving current. The detection around the current zero cross makes it possible to shorten a detection section, form a driving waveform with few distortions, and perform driving with a driving waveform as in an ordinary micro step. Thus a circuit is provided which is aimed at reducing noise, vibrations, and loss of synchronization, and increasing current consumption efficiency in the determination of stop.