36results about How to "Accurate detection time" patented technology

An apparatus and method for driving an image display device using a DMD are provided. The apparatus includes a color wheel, an optical sensor, a delay time determining unit, and a control unit. The color wheel includes a plurality of color filters and index marks formed at positions corresponding to boundary lines between the color filters, and the optical sensor detects the index marks during rotation of the color wheel and outputs detection signals. The delay time determining unit determines a delay time corresponding to a minimum margin required in a conversion of a color image signal according to the detection signal inputted from the optical sensor, and the control unit controls a DMD based on the detection signals and the delay time.

A force sensor includes a shaft to which a magnet is fixed, and a case which can reciprocate with respect to the shaft and to which a Hall IC element is fixed. The Hall IC element outputs an output voltage which changes in accordance with relative displacement between the Hall IC element and the magnet. A main spring is interposed between the shaft and the case and elastically deforms in accordance with force produced between the shaft and the case in the reciprocating direction. A sub spring is provided in order to impart a preload such that when the amount of elastic deformation of the main spring is substantially zero, no axial clearance is formed between a flange portion of the shaft and one end portion of the main spring, and no axial clearance is formed between the case and the other end of the main spring.

The invention provides a belt tension regulating device of an engine for improving workability in belt replacement, by detecting a reduction amount in belt tension, early and accurately determining a time for regulating the belt tension or a time for replacing belts, and detecting a change amount of the belt tension from above or in front of the engine without cutting of the view caused by an automatic tensioner and the belt. The belt tension regulating device of an engine comprises: an accessories driving pulley connected with a clank pulley through the belt 2; a tension pulley 5 wound in the middle of the belt; and the automatic tensioner 3 in which a moving end of an actuator is connected with the tension pulley through a connection arm to change a position of a rotation center of the tension pulley and thereby to change the belt tension. An indication member attached to an moving end of the actuator, and a detection member detecting the position of the indication member are provided to determine a state of the belt tension.

The invention discloses an in-hole cavity monitoring device and method based on multi-frequency ultrasonic scanning. The in-hole cavity monitoring device comprises a rotary driving component, an orientation component, a scanning component, a calibrating component and a reflection component. The invention further discloses an in-hole cavity monitoring method based on multi-frequency ultrasonic scanning, and aims to solve the problems of limit and low accuracy in a single-frequency ultrasonic detection range. Clear waveforms generated by selecting ultrasonic energy converters of two frequencies are comparatively analyzed in order to calculate the number of periods of ultrasonic pulse leak detection respectively, so that the transmission time detection accuracy is increased; meanwhile, the calibrating component and the reflection component are adopted in order to measure a sound speed in an environmental medium to realize high-accuracy measurement of a wave speed; lastly, distance values measured by the ultrasonic energy converters of two frequencies are averaged to obtain an accurate distance. The in-hole cavity monitoring device and method have the advantages of skillful design, strict concept, simple structural system, and easiness in implementation.

The invention discloses a power distribution network power quality disturbance detection method based on EWT and MFDE, and the method comprises the steps: extracting a PQ disturbance signal in an active power distribution network system, and carrying out the preprocessing; using empirical wavelet decomposition (EWT) to perform modal decomposition on the preprocessed PQ disturbance signal to obtain an intrinsic mode function (BLIMF) containing feature information; using the intrinsic mode function BLIMF containing feature information as the input of a multi-scale oscillation dispersion entropyMFDE algorithm, employing the multi-scale oscillation dispersion entropy MFDE algorithm to carry out the dispersion entropy calculation of the intrinsic mode functions BLIMF obtained through mode decomposition, and obtaining the multi-dimensional entropy vector of the PQ disturbance signal under each intrinsic mode function BLIMF through calculation; carrying out PCA dimension reduction accordingto the obtained entropy vector, and then taking the result as an input quantity of an SVM algorithm; and carrying out PQ disturbance signal identification on the active power distribution network system containing the distributed energy. According to the method, each disturbance in the composite power quality disturbance can be accurately detected and classified, the classification is accurate, and the method has certain anti-noise capability.

The invention relates to a quantitative detection card, a preparation method thereof and a detection method. The quantitative detection card comprises a bottom card and a surface card. The bottom card is provided with a sample application region, a bonding region, a micro-channel, a time valve, a detection region and a waste liquid region. The sample application region is connected with the bonding region. The sample application region and the bonding region are located at one end of the micro-channel. The detection region is connected with the other end of the micro-channel through the time valve. The surface card is provided with a sample application hole and an observation hole. The position of the sample application hole is corresponding to the position of the sample application region on the bottom card. Based on the immunofluorescence technique, the variation of an antibody at different time is detected. After that, the detection result is converted into the concentration of anti-17 alpha-hydroxyprogesterone antibody, the concentration of anti-luteinizing hormone antibody and the concentration of anti-follicle-stimulating hormone antibody in a to-be-detected sample according to a variation curve, so that the quantitative detection level is realized. The quantitative detection card, the preparation method thereof and the detection method have the advantages of simple operation, short detection time, simple storage, easy popularization and easy usage.

An optical scanning device has a light deflector deflecting a light beam from a light source, a synchronization detection sensor determining timing of starting scanning in main scanning direction based on timing of detecting the light beam scanned in main scanning direction by the light deflector, and a pre-sensor imaging optical system imaging the light beam reflected from the light deflector on the synchronization detection sensor. The pre-sensor imaging optical system moves the imaging position of the light beam on the synchronization detection sensor in a direction making the timing of detecting the light beam earlier or later according to whether variation in temperature causes the magnification of the scanning optical system in main scanning direction to increase or decrease respectively.

The invention discloses a gynecological tumor cell combined quantitative detection card, a preparation method thereof, and a using method thereof. The gynecological tumor cell combined quantitative detection card comprises a bottom card and a surface card; the bottom card is provided with a sample adding zone, bonding zones, microchannels, time valves, detection zones, and waste liquid zones, wherein the sample adding zone is positioned at one end of the microchannels, the bonding zones are connected with the multiple detection zones through the microchannels and the time valves and are positioned at the other end of the microchannels, the waste liquid zones are connected to the sample adding zone through the microchannels, and the bottoms of the bonding zones and the detection zones are both parallelly connected with the microchannels; and the microchannels are connected with the time valves. According to the gynecological tumor cell combined quantitative detection card, the preparation method thereof, and the using method thereof,the flow rate and the flow quantity of a to-be-tested sample are controlled by the microfluidic technology, gynecological tumor cells with the same marker enter the detection zones through a microchannel, so that mutual interference is avoided, thus the error is reduced, and reaction sensitivity is increased; and the to-be-tested sample is prepared into water-in-water micro-droplets, so that the detection limit is increased.

The invention relates to an image processing box in an electronic photographic imager. The image processing box comprises a development unit and a photosensitive drum box, wherein the photosensitive drum box is detachably assembled with the development unit; the image processing box further comprises a coding device for transmitting state identification information to the electronic photographic imager, which the coding device consists of a plane mechanism; and linear reciprocating motion of a signal shading sheet in the coding device is realized by the rotating action of a driving gear. By adopting the technical scheme, the plane mechanism device is adopted in the coding device, and the motion loci of the composition members of the plane mechanism device have high accuracy, so that the detection time that the non-transparent shading sheet passing through a code reader in the set time is more accurate; and compared with a coding wheel device driven by a torsion spring coupling device,the image processing box can be accurately identified all the time and effectively operated is ensured more accurately and effectively.

The invention relates to an image processing box in an electronic photograph imaging machine, which comprises a developing unit, a photosensitive drum box and an encoding device for transmitting state identifying information to the electronic photograph imaging machine, wherein the photosensitive drum box and the developing unit are assembled detachably; and the encoding device is formed by a plane mechanism, and a signal barrier sheet in the encoding device makes linear reciprocating motion under the rotating action of a driving gear. As the technical scheme is adopted by the invention, a plane mechanism device is adopted in the encoding device, and the motion trails of the components have high accuracy, so the detection time that the non-transparent barrier sheet passes through a code reader within set time is more accurate, and compared with an encoding wheel device driven by a torsional spring coupling device, the image processing box always can be identified correctly and can be operated effectively.

The invention discloses a GIS partial discharge detection method, a GIS partial discharge detection device, a medium and terminal equipment. The method comprises the following steps: acquiring the time when a plurality of pulses arrive at each sensor and a discharge pulse waveform; respectively calculating the distance between the discharge source corresponding to each pulse and each sensor according to the time when each pulse reaches each sensor; selecting a plurality of GIS internal discharge pulses generated by non-external interference signals from the plurality of pulses by combining the PRPD atlas of each pulse obtained from the discharge pulse waveform and the partial discharge signal amplitude; and drawing a positioning result distribution diagram corresponding to each sensor according to the distance between a discharge source corresponding to the plurality of GIS internal discharge pulses and each sensor, and determining a GIS partial discharge detection result according to the positioning result distribution diagram. By adopting the embodiment of the GIS partial discharge detection method provided by the invention, a plurality of pulses can be positioned at the same time and different types of pulses can be identified.