87results about How to "Improve deficiencies" patented technology

A system comprising a housing containing a signal generator coupled to an antenna and a dielectric material disposed about the antenna. The device is adapted to generate and direct a plurality of signals towards the heart of the person and measure a magnitude of a signal returned from the heart. The device further comprises a processor to compare differences between a magnitude of a signal propagated and the magnitude of the signal returned off the heart and determine a signal frequency having a maximum return loss value based on those differences. The processor also estimates a change in the amplitude of motion of a portion of a wall of the heart based on the differences between the magnitude of the signal propagated by the device and the magnitude of the signal returned off of the portion of the heart.

The invention discloses a single winding device for an automatic soft bobbin winder. The single winding device comprises a winder, a variable-amplitude filament guide device, a fixed length control device, a tension adjusting device and a single-chip microcomputer, wherein the winder comprises a winding frame and a groove drum, the variable-amplitude filament guide device comprises a variable-amplitude guide rail, a tension spring, a movable pull rod and an adjustable rotary rod, the fixed length control device comprises an infrared light-operated filament detector, a thread shear, an alarm indicator lamp and a reset button, and the single-chip microcomputer is used for controlling all the devices. The single winding device is simple in structure, reasonable in design and low in cost and noise, pineapple-shaped forming and fixed length and broken filament automatic stopping functions can be conveniently realized in use of the single winding device, high-quality soft winding can be realized, dyeing quality in subsequent procedure and smoothness in rewinding can be improved, and accordingly operating efficiency and economic efficiency of factories can be improved.

The present invention discloses a preparation method of high substituting degree hydroxypropyl distarch phosphate. It is made up by using water as medium and using potato starch, propylene epoxide, sodium trimetaphosphate and sodium hydroxide as raw material through the processes of mixing paste, esterification, cross-linking, neutralization, washing, drying, sieving and packaging. Said product is a white powder.

A map constructing method adopted by a map constructing apparatus and includes steps of: continually obtaining colored image and depth-image information by an image sensor and a depth sensor of the map constructing apparatus while the map constructing apparatus is moving; recognizing the colored image for determining whether a dynamic object exists; labelling an object area corresponding to the location of the dynamic object if the dynamic object exists in the colored image; mapping the object area to a depth-image coordinate adopted by the depth-image information, searching for a corresponding position of the object area in the depth-image information and filtering the object area from the depth-image information for generating an adjusted depth-image information; and, inputting the adjusted depth-image information to a map constructing algorithm for establishing map data.

The invention discloses an instant composite edible fungus powder nutrient and a preparation method thereof. The instant composite edible fungus powder nutrient comprises the following raw materials in parts by weight: 5-25 parts of Hericium erinaceus powder, 5-25 parts of shiitake powder, 5-20 parts of black fungus powder, 5-20 parts of white fungus powder, 1-5 parts of agrocybe aegerita powder, 1-10 parts of Agaricus blazei Murrill powder, 1-5 parts of Tricholoma gambosum powder, 1-5 parts of Pleurotus nebrodensis powder 1-10 parts of coprinus comatus powder, 1-5 parts of straw mushroom powder, 1-10 parts of pleurotus eryngii powder, 1-10 parts of Cordyceps militaris powder, 1-5 parts of agaricus bisporus powder, 5-20 parts of Grifola frondosa powder, 1-15 parts of tuckahoe powder, 1-10 parts of bamboo fungus powder, 1-5 parts of matsutake powder, 1-5 parts of boletus powder, 1-5 parts of Morchella esculenta powder, 1-5 parts of Lactarius volemus powder, 1-5 parts of truffle powder, 1-5 parts of Sparassis crispa powder and 1-5 parts of Fistulina hepatica powder. The invention also discloses a preparation method of the nutrient. The edible fungus powder nutrient can evenly supplement multiple nutrient substances and high-purity proteins.

The invention discloses an intelligent vibration damping device based on an SMA variable-rigidity spring and a working process. The device comprises a vibration monitoring part, a working chamber temperature control part and a vibration damper main body part. The vibration monitoring part is composed of an oscilloscope, a cable and a sensor probe, the working chamber temperature control part is composed of a temperature display, a temperature regulator, a wire, a temperature sensor, a miniature refrigerator and a heater, and the vibration damper main body part is composed of an aluminum spring, a center moving shaft, a rubber gasket, a high damping tension sleeve, an NiTi-SMA spring, a movable sliding block, a hinged short bar and a metal shell. According to the intelligent vibration damping device based on the SMA variable-rigidity spring and the working process, a rigidity change rule presented by the NiTi-SMA spring which has the temperature sensitive characteristic under different temperatures is utilized, and the functions of intelligent vibration damping and vibration avoiding of a novel vibration damper are achieved; the intelligent vibration damping device has the advantages that the device is intelligent and controllable, the effect is obvious, the structure is simple, and machining is convenient; and the device is suitable for vibration damping systems of various large, medium and small scales industries and equipment for civil use.

The invention provides a space arc interpolation welding method based on a teaching robot. The space circular interpolation welding method includes the steps that coordinate values of any three points on an any space arc on a workpiece are preset; the circle center and the radius of a space circle corresponding to a space arc coordinate system and the space arc are determined according to the coordinate values of the three points; an attitude matrix of the robot under a workpiece coordinate system is obtained through calculation of the rolling angle, the pitch angle and the deflection angle of the robot at a teaching starting point under the workpiece coordinate system; the attitude matrix is converted into an initial matrix under the space arc coordinate system; a rotating matrix of the initial matrix around the Z axis of the space arc coordinate system is determined according to the circle center angle of the space circle corresponding to the space arc; a target matrix of a robot interpolation arc is determined according to the initial matrix and the rotating matrix; the target matrix is converted into an interpolation matrix under the workpiece coordinate system; and the robot conducts arc interpolation according to the interpolation matrix so as to weld the space arc. The operation method is simple, the machining precision is controllable, and the machining efficiency is high.

Low-calorie and high-nutrition baked food with the health care function is made of crude fiber food such as buckwheat powder, wheat bran, sweet potato powder, corn flour, wheat flour, skim milk powder, Konjac powder, nutrient enrichment components and the like, wherein the crude fiber food such as the buckwheat powder, the wheat bran, the sweet potato powder and the corn flour is fermented in advance through probiotics such as bifidobacteria, lactobacilli, bacillus subtilis and yeast powder. The low-calorie and high-nutrition baked food has the advantages of being rich in nutrition and low in content of saturated fatty acid and balancing diet, and the buckwheat powder, the wheat bran and the sweet potato powder are rich in cellulose and decomposed into small molecular weight organics through fermentation, which is beneficial for absorption of the human body; the buckwheat powder serves as a source of protein and is high in protein content and rich in various minerals, and rice bran oil and camellia oil contain a good deal of unsaturated fattyacid, so that the baked food has the effects of inhibiting obesity, preventing hyperlipidemia, hypertension and hyperglycemia and enhancing immunity; maltitol and xylitol serve as sources of sugars and are low in calorie, and the nutrient enrichment components supplement microelements such as calcium and ferrum, vitamins and dietary fibers daily needed by the human body.

The invention provides a combined-type dredge ship. The combined-type dredge ship comprises a bow part and a stern part which are connected with each other; the bow part is connected with the stern part in a detachable manner. According to the technical scheme disclosed by the invention, a ship body adopting the detachable connection and electrical drive are adopted, so as to improve defects in traditional small-sized cutter suction dredgers; shallow draft of the ship body can be ensured, and the overall strength of the ship body can be ensured; therefore, the maximum digging width is greatly increased, so that dredging in a coastal zone and shallow tidal flats of inland rivers becomes more efficient, energy- saving, environment friendly and economical.

The invention discloses an EEMD (Ensemble Empirical Mode Decomposition) and combined kernel RVM (Relevance Vector Machines)-based photovoltaic power short-term prediction method. Through the adopted EEMD, a problem that the possibility of mode mixing during empirical mode decomposition is high is avoided, so that higher resolution and very strong non-linear processing capacity are provided, the data complexity is reduced, the effect is excellent, the result is accurate, the prediction accuracy is effectively improved, and the method can be applied to the data preprocessing of the photovoltaic output power well; through the adoption of an RVM method for short-term photovoltaic power prediction, the method has the advantages of being sparse in model height, less in kernel parameters to be optimized, flexible in kernel function selection, and high in model generalization ability; and by use of a combined kernel function, the prediction accuracy of photovoltaic power through a model is further improved when the weather changes suddenly, so that the universal adaptability and the generalization performance of the model are improved.

The invention discloses a method and a system for processing color noise in an image, electronic equipment and a storage medium. The method comprises the following steps: acquiring original channel data; obtaining decomposed image data of the L decomposition layers; calculating the similarity between to-be-processed pixels and neighborhood pixels of the YUV three-channel data in the to-be-processed data of the Lth layer, determining the joint weight of each neighborhood pixel position, and denoising the UV channel according to the neighborhood pixels of the UV channel and the joint weights atthe neighborhood pixel positions; and performing up-sampling on the denoising result of the Lth layer, combining the denoising result of the Lth layer with the Laplace pyramid data of the L1th layer to obtain data of the L1th layer, performing operation similar to that of the Lth layer on the data, performing circulation in sequence until the data of the first layer is obtained, and performing filtering and denoising on the data to finally obtain denoised image data. According to the invention, large-size color noise and small-particle noise points can be suppressed at the same time, the coloredge retention characteristic is good, and the color overflow phenomenon can be effectively reduced.

The invention discloses convenient oat nutritious porridge prepared from the following components in parts by weight: 115-140 parts of a main ingredient namely oatmeal packets, 5-24 parts of seasoning soup sauce packets, 15-25 parts of seasoning olive dish packets and 500-800 parts of boiling water, which are mixed together. The convenient oat nutritious porridge adopts unique component and a unique formula, so that the original nutrition of oat is ensured, the nutrition range of the oat is expanded, redundant heat can not be brought to a human body, and essential nutrients are convenient to be absorbed by the human body. Moreover, the convenient oat nutritious porridge is wonderfully combined with Chao-Shan flavor featured olive dish to ensure that the product is rich in nutrition and full in mouthfeel, so that the taste and appetite of people can be increased, and the defects of the existing fast foods are improved. The convenient oat nutritious porridge disclosed by the invention is suitable for all kinds of people to eat and meet requirements for high-quality and high-nutrition fast foods of people in a fast-paced life.

The invention discloses a basketball shooting training device and relates to the technical field of basketball training equipment. The invention is used to solve the problem that existing basketball training equipment cannot perform shooting practice according to the needs of trainers. Including: a basketball stand, a ball machine, a camera device, a test device and a control device; the test device includes a first rangefinder, a second rangefinder, a first speedometer, a second speedometer, a first timer, and a second timer instrument and the third timing instrument; the control device includes a first controller, a second controller, a third controller, a processor and an image acquisition unit; the processor is respectively connected with the first rangefinder, the second rangefinder, the first Speedometer, second speedometer, first chronograph, second chronograph, third chronograph, first controller, second controller, third controller and image acquisition unit are electrically connected to determine the speed of the trainer receiving the ball , reaction speed, adjusted shooting speed and total shooting percentage per time period.

The invention discloses a method for extracting iodine from wet-process phosphoric acid produced from an iodine-containing phosphorous ore by a semi-water and bi-water method. In the process of extracting the iodine, the concentration of the iodine is 10 to 50mg / L, the phosphoric acid comprises 40 to 48 mass percent of P2O5, and the iodine is extracted by 717 anion exchange resin which has extremely high iodine ion adsorption capacity. The method comprises the following steps of enriching the iodine in the phosphoric acid; eluting; analyzing the iodine; and extracting the iodine. By the method, the used 717 anion exchange resin has high iodine enriching magnification and a high exchange speed, is easy to elute and operate, can be recycled, and reduces production cost; a selected oxidant sodium hypochlorite can easily control oxidation degrees and has an obvious effect; the method has a simple process, and a product from which the iodine is extracted has high quality and high yield; and the recovery rates of resources are improved.

The invention provides a business hall service specification quality inspection method based on video monitoring. The business hall service specification quality inspection method comprises the following steps: A, establishing a standard image model; B, acquiring real-time video monitoring, and confirming a monitoring target in the video monitoring; C, extracting features of the monitoring target,comparing the features with the standard image model, and performing service specification quality inspection according to a comparison result; and D, processing based on the result of the service specification quality inspection, and generating a service quality inspection report. Based on video monitoring and video analysis technologies, the business hall environment and worker behaviors are monitored, so that the service quality of workers is improved, the customer complaint rate is reduced, the insufficient service quality is found by analyzing the service quality data of the workers, thedeficiencies of the workers are summarized, sorted and supervised, the service quality of the workers is effectively improved, and customer loss is avoided.

The invention discloses an artificial plate specially-produced environmentally-friendly emulsified wax, and especially relates to a practical and environmentally-friendly artificial plate specially-produced environmentally-friendly emulsified wax. The artificial plate specially-produced environmentally-friendly emulsified wax prepared in the invention has the characteristics of good compatibility, low melting point, strong adhesive power, high water resistance, simple operation, convenient technology and the like, can improve the adhesion, the water resistance and the acid and alkali resistance of a wax film and substantially improves the disadvantages of a wax emulsion. The emulsified wax also has the advantages of less consumption, raw material saving and less energy consumption. The emulsified wax solves a problem that the product quality is directly influenced by cracking, warpage and the like easily generated in the use process. The emulsified wax is characterized by no pollution, has no influences on environment, people do not have to worry about the harms of volatile hazardous substances to bodies in the operation process, the emulsified wax is safe to use, and no lightning combustion phenomenon appears. Artificial plates using the emulsified wax are harmless to salesmen, clients and merchants, and do not pollute the environment or people, so the emulsified wax is a convenient-operation artificial plate specially-produced environmentally-friendly emulsified wax.

The invention discloses a method for improving washed soil, and relates to a method for improving soil. The method for improving washed soil comprises the following process: determining the proportion of sand granules of 0.025mm of washed soil according to a hydrometer method, when the proportion of sand granules greater than 0.025mm of the washed soil is 60%-80%, the additive amount of mushroom residue composite additives is 8wt%-10wt%; when the proportion of sand granules greater than 0.025mm of the washed soil is 40%-60%, the additive amount of mushroom residue composite additives is 3wt%-5wt%, and when the proportion of sand granules greater than 0.025mm of the washed soil is below 40%, the additive amount of mushroom residue composite additives is 1.5wt%-2.5wt%; and mushroom residue composite additive is formed by uniformly mixing mushroom residue after decomposition treatment, biogas residue and fulvic acid according to the mass ratio of 355:97:38. The method not only can be used for increasing the water retaining capacity of the washed soil, but also can replenish nutritional ingredients of the washed soil, meanwhile, is low in cost, has no engineering modification, and is high in feasibility in actual applications.

The invention provides a long-distance digital electrical-stimulation prescription system which comprises an authentication managing platform, a prescription server, a standby server, a prescription access device and an electrical-stimulation device. A user can request the authentication managing platform for transmitting a digital electrical-stimulation prescription through the prescription access device anytime and anywhere, and carry out electrical-stimulation treatment under the online or offline circumstance. The space-time use limitation is greatly broken through by the system, the system has the better use flexibility and the application support, the frequency for treating patients can be really increased, and the medical quality is improved.

The invention discloses a solder paste printing quality prediction method and system based on IGA-DNN, and the method comprises the steps: collecting solder paste printing key process parameters and solder paste printing relative volume original data, carrying out the preprocessing, determining a deep neural network topological structure according to the types of input and output variables, the solder paste printing relative volume predicted by the deep neural network is used as a fitness function of the genetic algorithm; finally, a genetic algorithm is used for optimizing and solving the weight and the threshold value of the deep neural network, algorithm model training is completed through a training sample. However, with a traditional neural network which adopts a gradient descent method to update hyper-parameters of the network, the network search speed is low, and local optimum is extremely prone to occurring. According to the method, the hyper-parameters of the deep neural network are initialized based on the genetic algorithm, the convergence speed and precision of the neural network are improved, high precision and stability of SMT solder paste printing quality prediction are achieved, and meanwhile corresponding technical method support is provided for SMT solder paste printing process parameter optimization.

A device and method for treatment of a calcination tail gas. A first foam-removing grating, a second foam-removing grading and a surfactant in a four-stage spraying column (wherein the surfactant includes 0.01% of sodium dodecyl benzene sulfonate and 0.29% of Na2SO4) are employed in a cooperative manner so that PM2.5 micro-particles in the end tail gas can be reduced by more than 95%. Through four-stage spraying treatment, including a first-stage spraying treatment, a second-stage spraying treatment, a third-stage spraying treatment, and a fourth-stage spraying treatment, harmful gases, such as nitric oxides, carbonic oxides, sulfides and the like, can be reduced by more than 99%. In the device, through arrangement of a waste liquid circulating tank, comprehensive recycle of a waste liquid can be achieved. Waste water formed by ammonia water, which is employed in the spraying process, after the ammonia water absorbing the acidic gases can be used as a source of raw materials of production of chemical fertilizers. By means of the method for treatment of the calcination tail gas, deficiencies in an industrial tail gas treatment method in the prior art is improved. The method and the device are quite good in economic benefit and social benefit.

The invention discloses a pole piece resistance measuring instrument, a pole piece resistance measuring system and a pole piece resistance measuring method. The pole piece resistance measuring instrument comprises a control box, a base arranged on the control box, a lower pressing head arranged on the base, a pressure applying device mounted on the base, and a pressure sensor arranged on the pressure applying device, wherein the pressure applying device has an upper pressing head arranged opposite to the lower pressing head, and applies variable pressure to a pole piece resistor to be measured, which is placed on the lower pressing head, by means of the upper pressing head; the pressure sensor is arranged on the pressure applying device, and is used for acquiring the pressure applied to the pole piece resistor to be measured; the control box comprises a control main board, and a resistance measuring main board, a gas pressure regulating valve and a liquid crystal display screen which are electrically connected with the control main board; the resistance measuring main board is connected with the upper pressing head and the lower pressing head; and the gas pressure regulating valveis communicated with the pressure applying device. Based on the pole piece resistance measuring instrument, the pole piece resistance measuring system and the pole piece resistance measuring method, the variation relationship of pressure, extension and resistance is established, a measuring device which is more convenient to operate is provided, and the research of the relevant pole piece is completed.

This invention discloses a method for preparing leaf fertilizer of poly (ammonium borate). The method comprises: (1) heating 60 kg water in the reaction kettle to 60 deg.C, and adding 50 kg boric acid and 50 kg ammonia under stirring until no air bubbles; (2) evaporating and concentrating the solution in an electric evaporator at less than or equal to 100 deg.C to 50%, filtering the supernatant, cooling to normal temperature, and crystallizing; (3) dehydrating the crystal, and drying in a drier at 100-105 deg.C for 8 h to obtain the leaf fertilizer of poly(ammonium borate). The leaf fertilizer of poly (ammonium borate) has such advantages as high boron content, easy absorption, and low crystallinity.

This invention relates to a high efficiency apparatus for manufacturing an aqueous wood smoke solution in the form of a liquid smoke desired concentration, and a method of obtaining such aqueous solution using the same apparatus by burning wood, wooden chips or sawdust in a limited amount of air. The apparatus and process disclosed herein is simple, safe, and clean. Wood consumption per unit of liquid smoke is significantly smaller comparing to conventional methods, while the air pollution is reduced to a negligible level.

The invention discloses a fluorescent material detecting system based on double-clad fiber. The system comprises an ultraviolet laser, single mode fiber, a 2*2 double-clad fiber coupler, the double-clad fiber with a tapered end, a Teflon pipe, a hole formed by machining, multimode fiber and a spectrum analyzer. The system adopts an ultraviolet excitation light source, fiber core transmission of the double-clad fiber stimulates a fluorescent molecular solution in the Teflon pipe, and fluorescent molecules are stimulated to transmit a fluorescent signal; the fluorescent signal is collected by aninner clad layer of the double-clad fiber, the spectrum analyzer detects the strength and wave length of fluorescence, and therefore the concentration and type of a fluorescent material are measured.The system has the advantages of high sensitivity, small size and light weight, the limitation in the heat-resistance temperature aspect is smaller, manufacturing is easy, and the cost is low. Substances contained in a sample can be more conveniently detected more accurately and more efficiently.

An agricultural implement includes a toolbar that extends transverse to a tongue when in a field use configuration. The toolbar can be lifted and / or rotated relative to the tongue to transition between a field use and a transport use. A lifting assembly includes one or more actuators and linkage systems to lift the toolbar attached thereto in an arced manner in moving from a field use configuration to a transport configuration. A rotating mechanism can also include one or more actuators to rotate the toolbar about a pivot member. An anti-rotation link includes a member is connected to the toolbar and can be positioned at least partially within a groove to mitigate rotation of the toolbar, such as during the lifting of the toolbar.

The invention relates to a powered wheelchair 100 with a tilt mechanism provided with multiple pivots which is able to be steered with or without the use of hands. The wheelchair 100 is provided with two spaced drive wheels 101, and each drive wheel is mounted on a separate drive shaft 104 without impact of the other drive wheel. A drive controller is coupled to the drive shaft 104, and the drive controller is located inside the base 102, pivotally connected to the drive shaft 104. A user moves the body gravity center or moves its direction such that the wheelchair seat 103 mounted on the tilt mechanism leans forward, backward, left and right. The tilt mechanism is equipped with a first grade pivot P1, a second grade P2 and a third grade pivot P3. The first grade pivot P1 makes a base 102 be pivotally connected to the drive shaft 104.The second grade pivot P2 is mounted on and adjacent to the base 102. Two ends of the drive rod 105 are pivotally connected to the base 102. The tilt mechanism and the drive controller are connected to the gravity center movement sensor to control the movement and advancing direction of the wheelchair 100. The first grade pivot P1 and the second grade pivot P2 make the wheelchair seat 103 move in the direction forward or backward(103F,103B) relatively to the drive wheels 101. The movement can be sensed by the gravity center movement sensor, and then the drive controller is actuated to transfer the drive force to one or two of the drive wheels, so that the wheelchair 100 is moved in accordance with the direction has been perceived, for example, forward or backward. The second grade pivot P2 can enlarge the offset of the user gravity center movement, thereby increasing the the control of the wheelchair seat 103 leaning forward or backward(103F,103B) with respect to the dirve shaft. Only the first grade pivot P1 is unable to make the drive shaft 104 operate. The third grade pivot P3 is located above the second grade pivot P2 and under and adjacent to the wheelchair seat 103, so that the two ends of the drive rod 105 can be pivotally connected to the wheelchair seat. The third grade pivot P3 can make the wheelchair seat 104 lean to the left or the right(103R,103L) through the tilt mechanism. The gravity center movement sensor which senses left and right movements prompts the drive controller transmitting the driving force to one or two drive wheels to make the wheelchair 100 turn toward left or right.

The invention provides a corona sensing device which comprises a voltage supplying module, a peak holding module and a judging module, wherein the voltage supplying module is used for providing a test voltage for an object to be tested; and the peak holding module is used for sensing a current passing through the object to be tested when the test voltage is applied to the object to be tested and generating an extending voltage according to the current. The invention also provides a corona sensing method which comprises the following steps of: firstly providing the test current for the object to be tested, and sensing the current passing through the object to be tested when the test voltage is applied to the object to be tested; and then, generating the extending voltage and judging whether corona discharge occurs or not when the object to be tested bears the test voltage. The device and the method can effectively sense high-frequency slight discharge due to broken holes or cracks in the object to be tested.

The present invention relates to a preparation method of corn hydroxypropyl distarch glyceryl ether. It is made up by using water as medium and using corn starch, propylene epoxide, epoxy chloropropane and sodium hydroxide as raw material through the processes of mixing paste, etherification, cross-linking, neutralization, washing, drying, sieving and packaging.

The invention relates to a low-bit compressed image deblocking method based on visual sensitivity and spatial filtering. The method includes the steps that an input distorted image is divided into a flat region, an edge region and a texture region according to visual sensitivity characteristics; then a Sobel operator is selected to extract gradient information of pixels of the image, a threshold value is set to enable the image to be divided into an edge region, a texture region and a flat region; the image is further divided into flat blocks, edge blocks and texture blocks; filtering is conducted on the blocks in different filtering modes, and finally block information obtained after filtering is integrated to obtain a processed image. According to the method, the human eye visual sensitivity characteristics are applied to classification of compressed distorted image texture, and the blocking effect in the image is subdivided into six types according to the neighboring relation of the texture blocks. The classification method is simple and effective, an appropriate filter can be selected specifically and easily to perform filtering processing on the blocking effect.

A semiconductor device includes a substrate having a frontside and a backside. The substrate includes a semiconductor layer and a buried insulator layer. A transistor is disposed on the semiconductor layer. An interlayer dielectric (ILD) layer is disposed on the frontside and covering the transistor. A contact structure penetrates through the ILD layer, the semiconductor layer and the buried insulator layer. A silicide layer caps an end surface of the contact structure on the backside. A passive element is disposed on the backside of the substrate. The contact structure is electrically connected to the passive element.