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331results about How to "Shorten detection time" patented technology

Connection table based automatic optical detection algorithm of printed circuit board

The invention relates to a connection table based optical automatic detection algorithm of a printed circuit board, belonging to the field of machine vision. In the invention, the on-line detection technique of the printed circuit board is improved by using a connection table method, and the aims of increasing the on-line detection speed and accuracy without precisely positioning images are achieved. The connection table-based optical automatic detection algorithm of the printed circuit board is mainly characterized by comprising the following step of: establishing a bonding pad conducting wire connection table by utilizing the connection relationship among bonding pads to prepare for subsequent detection. In the invention, the obtained images of a standard circuit board and the images of a circuit board to be detected can be preprocessed and finely processed, and a template database is established by extracting the characteristics of images. In the invention, the aims of quick positioning and precise identification are achieved without precisely aligning the image to be detected with a template image by utilizing the connection relationship among the bonding pads as a target positioning tool. In the invention, the defect problems of the conducting wire and the bonding pads in the circuit board to be detected can be accurately detected and the aim of real-time detection is achieved.
Owner:EAST CHINA UNIV OF SCI & TECH

Detection method and detection kit for detecting special pathogenic bacteria by bioluminescence

The invention relates to a method and a detection kit for detecting special pathogenic bacteria by a bioluminescence method combined with immunomagnetic bead identification. According to the method of the invention, with monoclonal antibodies or polyclonal antibodies on an immunomagnetic bead, bacteria in a bacterial suspension or a sample are captured by antigen-antibody reactions; adenosine triphosphate (ATP) in the bacteria is released by adding a lysate; finally detecting the ATP content by fluorescein (D-Luciferin)-luciferase so as to determine whether specific microorganism is present in the sample, and determining the amount of the contained specific microorganism by the determination of an ATP standard curve. The kit provided by the invention comprises an immunomagnetic bead coating the antibodies, a microbial lysate, luciferase and a protective agent, a detection buffer, etc. With the invention, detection time can be shortened greatly (within 2 hours); no bacterium increasing or filtering is necessary; the operation is simple; the sensitivity is high; the specificity is high; and the invention is applicable to rapid field detection of food and environment samples, and basic popularization and application.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Battery classifying method of retired electric cars

The invention provides a battery classifying method of retired electric cars. The method comprises the steps that power batteries are subject to self-discharging detection, voltage drop-out value of the power batteries is obtained, and materials of the power batteries are combined for judging whether the power batteries meet the first echelon utilization requirement or not; the power batteries are subject to performance detection, the capacity retention ratio of the power batteries is obtained, and according to the capacity retention ratio, whether the power batteries meet the second echelon utilization requirement or not is judged; the power batteries are subject to temperature rise effect detection, the temperature rise amplitude of the power batteries is obtained, and according to the temperature rise amplitude, whether the power batteries meet the third echelon utilization requirement or not is judged; and according to the battery parameter threshold value range of the application condition of the power batteries, the application method of the power batteries is determined. According to the method, the batteries with the high potential safety hazard can be rapidly and effectively removed, the threshold value range of parameters of the retired power batteries applied under different conditions is determined, and the safety of the batteries in the application process is improved.
Owner:STATE GRID CORP OF CHINA +3

Multifunctional human physiological parameter testing device

ActiveCN102988053AShorten detection timeSave time readingSensorsBlood characterising devicesHealth evaluationThermometer
The invention belongs to the technical field of medical testing, and particularly relates to a multifunctional human physiological parameter testing device, which comprises a frame body and a control center arranged in the frame body. The frame body is provided with a detection component, the detection component is used for detecting multiple human physiological parameters, is electrically connected with the control center, is controlled by the control center, and comprises a body height detector, an electronic weight scale, a thermometer, a blood pressure detector, an electrocardio and body composition tester, and a blood oxygen tester, the body height detector is fixedly arranged at the upper end of the frame body and is used for detecting the body height, the electronic weight scale is arranged at the bottom of the frame body and is used for detecting the weight, the thermometer is fixedly arranged in the middle of the frame body and is used for detecting the temperature; the blood pressure detector is used for detecting the blood pressure, the electrocardio and body composition tester is used for detecting the heart rate and body composition, and the blood oxygen tester is used for detecting the blood oxygen. Therefore, when an examinee is located in the testing device, multiple human physiological parameters can be tested, a health assessment form can be obtained, multiple testing instruments can be eliminated for the examinee, the detection efficiency can be improved, the detection time can be saved for the examinee, and one-stop convenient services can be provided for the examinee.
Owner:SHENZHEN BELTER HEALTH MEASUREMENT & ANALYSIS TECH CO LTD

Precision measurement method for flat crack and antenna crack

The invention relates to an optical measuring device, especially relates to a precise method for measuring the slot of a planar slot antenna, and the device at least includes an image extracting device, a compute unit which processes the information provided by the image extracting device, which is characterized in that: A. initialization: 1) establishing a corresponding relationship between the digital picture pixel and the actual dimension; 2) extracting an image information from the planar slot antenna; 3) extracting a slot edge information of the image; 4) executing a sub-pixel process of the edge point; 5) storing sub-pixel edge points; B. real-time detection: 1) extracting an image information from the planar slot antenna at certain times; 2) extracting a slot edge information from the image information; 3) executing a sub-pixel process; 4) comparing with the corresponding edge point information stored in step four of the section A; 5) when less than the variation amount, repeating the step one of the section B; 6) when more than the variation amount, presenting a reminding information. The measurement can be carried out in working condition of the antenna, which does not affect use, and the measurement precision is high and the cost is low.
Owner:XIDIAN UNIV

Alga sort classification identification method based on Raman spectroscopy technique

The invention discloses an alga sort classification identification method based on a Raman spectroscopy technique. The alga sort classification identification method comprises the steps as follows: a plurality of samples of the same alga sort are taken, each sample is living alga liquid of the current alga sort, and the Raman spectroscopy original information about the each sample is obtained by adopting a Raman spectrograph; the acquired Raman spectroscopy original information is preprocessed to obtain a corresponding preprocessing spectral graph, and main factors are abstracted from each preprocessing spectral graph by adopting the partial least squares; the alga sort is exchanged, and main factors corresponding to different alga sorts are obtained; a BP nerve network model is established via taking the main factors of all the alga sorts as the input and taking the classification of the alga sort corresponding to the each main factor as the output; a living alga liquid to be identified is taken to acquire the main factors of the living alga liquid to be identified, and input the main factors into the BP nerve network model, and the alga sorts contained in the living alga liquid to be identified are obtained. The alga sort classification identification method achieves quick and accurate classification of alga sorts based on the Raman spectroscopy technique, greatly simplifies operation steps and shortens detection time.
Owner:ZHEJIANG UNIV

In-situ on-line detection device for metallurgy liquid metal component

ActiveCN102313721AShorten detection timeImprove product qualityAnalysis by material excitationPhysicsElectricity
The invention relates to an in-situ on-line detection device for a metallurgy liquid metal component. The device comprises a front-end high-temperature-resisting optical probe, a middle-end signal generating and acquiring part and a rear-end control platform, wherein the front end of the front-end high-temperature-resisting optical probe is arranged in metallurgy liquid metal to generate an optical signal and is used for transmitting the optical signal to the middle-end signal generating and acquiring part; the middle-end signal generating and acquiring part is used for converting the received optical signal of the front-end high-temperature-resisting optical probe into an electrical signal and outputting the electrical signal to the rear-end control platform; and the rear-end control platform is used as a manual operation and display platform and is used for receiving the electrical signal transmitted by the middle-end signal generating and acquiring part, processing the received electrical signal, controlling a laser signal of the middle-end signal generating and acquiring part and controlling the flow of water and gas in the front-end high-temperature-resisting optical probe. By the device, detection time is greatly shortened, the quality of a product is substantially improved, production cost is reduced, and energy consumption is reduced; and the device has an accurate measurement result and can be used for measuring difficultly-measured components such as C, S, P and the like.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI

Preparation method of ultra-high purity aluminum sample for GDMS detection and impurity analysis method of ultra-high purity aluminum sample

InactiveCN107843478AInhibit the formation of oxide layer on the surfaceShorten detection timePreparing sample for investigationAluminiumAnalysis method
The invention discloses a preparation method of an ultra-high purity aluminum sample for GDMS detection and an impurity analysis method of the ultra-high purity aluminum sample, relating to the technical field of analysis of high-purity metal components. The preparation method comprises the step of carrying out ultrasonic acid pickling on a to-be-tested ultra-high purity aluminum sample, wherein acid pickling liquid is mainly prepared by mixing nitric acid, hydrofluoric acid and water in a volume ratio of 1 to (2-5) to (5-8). According to the preparation method, the problems that existing methods are not suitable for ultra-high purity aluminum samples, Na and Si are easily introduced in a sample preparation process, and then the detection is slightly high or the stabilization time of an element detection value is long are alleviated. By utilizing a sample preparation method disclosed by the invention, the problem that Na and Si in the ultra-high purity aluminum sample are easily introduced can be effectively alleviated, meanwhile, impurities can be effectively removed, the formation of an oxidation layer on the surface is effectively inhibited, the GDMS detection time is effectively shortened, and the accuracy, stability and repeatability of detection are guaranteed.
Owner:KONFOONG MATERIALS INTERNATIONAL CO LTD

On-line checking method of quality and flow controller

The invention discloses an online check method for a mass flow controller, wherein the opening of a pressure control valve or the atmospheric pressure in a reaction chamber corresponds to the flow rate of gas one by one during the checking process, so that the gas with predetermined flow rate can be inputted and the opening of the pressure control valve or the atmospheric pressure in the reaction chamber is measured after the pressure is dynamically stabilized; the gas with the predetermined flow rate is inputted through the mass flow controller to be checked and the opening of the pressure control valve or the atmospheric pressure in the reaction chamber is measured after the pressure is dynamically stabilized again; and the conclusion that whether the mass flow controller to be checked is subjected to zero drift or not can be drawn by comparing the opening or the atmospheric in the two times. The time consumed by the check method is only the time for establishing dynamic pressure equilibrium in the reaction chamber, so that the check method can obviously shorten the breakdown detection time and quickly obtain the detection result, and is favorable for improving the service efficiency of plasma processing equipment.
Owner:BEIJING NAURA MICROELECTRONICS EQUIP CO LTD

Real-time shielding residue soil volume measurement method based on optical grating projection binocular-imaging technology

The invention discloses a real-time shielding residue soil volume measurement method based on an optical grating projection binocular-imaging technology. A laser projector projects structured light having a certain code to comprehensively cover a soil bucket compartment of a residue soil vehicle, the shape of the structured light is as shown in a figure, two vidicons form an angle and can well acquire optical grating projection information of the soil bucket compartment of the residue soil vehicle and then project the acquired optical grating images into the soil bucket compartment of the residue soil vehicle, feature point matching is conducted on the obtained optical grating images through a computer, point cloud preprocessing and three-dimensional reconstruction are performed to simulate a three-dimensional shape of the soil bucket compartment of the residue soil vehicle, the size before loading of the soil bucket compartment of the residue soil vehicle is calculated through a rapid volume calculation method, the size after loading of the soil bucket compartment of the residue soil vehicle is calculated by repeating the steps, and the size difference is the shielding residue soil amount to be measured. The method makes measurement convenient and quick, and real-time measurement can be achieved.
Owner:XIAN UNIV OF SCI & TECH

Power battery management system, insulation resistance detection device and method for power battery

The invention discloses a power battery management system, an insulation resistance detecting device and a method for a power battery. The detecting device comprises: a positive and negative bias resistor network, a positive and negative voltage detecting unit and a control unit. The control unit first controls the positive bias resistor network and the negative bias resistor network to be in an off state, and obtains the first positive insulation voltage V1 and the first negative insulation voltage V2 of the power battery through the positive voltage detection unit and the negative voltage detection unit. When V1 is greater than V2, the negative bias resistor network is first controlled to be in an on state, a second negative insulation voltage V2' is obtained, and then the positive biasresistor network is controlled to be in an on state. And the negative bias resistor network is controlled to be in an off state after the first preset time delay, the second positive insulation voltage V1' is obtained, and the positive and negative insulation resistance of the power battery is obtained according to V1, V2, V1' and V2'. The system not only enables accurate detection of the insulation resistance, but also shortens the detection time.
Owner:BEIJING ELECTRIC VEHICLE

Automatic Android platform malicious software detecting method

The invention provides an automatic Android platform malicious software detecting method and system. The method includes the steps of 101, inputting software to be tested, analyzing the software characteristic behaviors of the software to be tested, and obtaining the malicious software characteristic behaviors in the software characteristic behaviors; 102, calculating the sum of weighted values of all the obtained software characteristic behaviors; 103, comparing the sum of the weighted values with a set threshold value, and then judging whether the software to be tested is malicious software or not. Before the step 101, the method further includes the steps of firstly, analyzing the malicious behavior mode of the software, extracting all malicious software characteristic behaviors, and establishing a malicious software characteristic behavior bank; secondly, distributing weights for all the extracted malicious software characteristic behaviors, and establishing the mapping relation list of all the malicious software characteristic behaviors and the weights; finally, calculating the detecting threshold value representing that the software belongs to the malicious software according to the weights of the malicious characteristic behaviors, and establishing a malicious software detecting model bank according to the obtained detecting threshold value.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI

Five-axis numerical control machine tool space error detecting method based on rotation tool center point (RTCP)

The invention provides a five-axis numerical control machine tool space error detecting method based on a rotation tool center point (RTCP), and belongs to the technical field of numerical control machine tool detection. To solve the problems that a traditional space error detecting method generally can be used for only detecting a single-axis error in a single time, multiple times of detecting are needed, consequentially, the consumed time is long, the efficiency is low, and a five-axis linkage error fail to be reflected, according to the five-axis numerical control machine tool space error detecting method, based on the RTCP function of a five-axis numerical control machine tool, machine tool five motion axis detecting positions are established with the arranged rotation axis detecting positions as the reference by means of a space error transfer model, single errors of all axes are described as a polynomial function related to the positions of the axes, the polynomial coefficients of all errors are subjected to inverse solving through tool point detecting results, and finally, the whole machine tool work space errors are detected. By means of the five-axis numerical control machine tool space error detecting method based on the RTCP, the five-axis numerical control machine tool space error detecting efficiency is improved, the detecting process is simplified, the detecting cost is lowered, and meanwhile, the machine tool five-axis linkage precision can be reflected in the detecting process.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
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