43results about How to "Realize multiple detection" patented technology

The invention relates to a virtual reality system testing device and method. The testing device comprises a testing controller and a testing module. The testing controller is used for generating control signals and sending the control signals to the testing module. The testing module comprises: a testing platform; a signal acquisition unit, which acquires signals displayed by a head-mounted device display of a virtual reality system to be tested, or acquires and displays signals of an external display of play images of the virtual reality system to be tested; and a motion drive unit, which receives control signals and drives the testing platform to move according to the control signals, so that the position of a head-mounted device of the virtual reality system to be tested changes. The testing module is controlled by the testing controller, so automatic testing of the virtual reality system can be realized, and parameters of display effects of the virtual reality system can be tested. The testing efficiency is high, and the accuracy is great.

The invention discloses an SERS sensor for integrated detection of tumor protein and nucleic acid markers and a preparation method thereof. The SERS sensor comprises a silver nanorod array substrate and an SERS probe, wherein the surface of the silver nanorod array substrate is modified with a tetrahedral DNA structure; the tetrahedral DNA structure is formed by self-assembling six DNA single chains, and three DNA single chains are arranged on three edges of the tetrahedral DNA structure, are respectively connected with three capture chains and are used for respectively and specifically binding nucleic acid and a protein marker. The detection limits of the SERS sensor for detecting nucleic acid and protein respectively reach the Amol/L magnitude and the fg/mL magnitude; the integrated detection of various nucleic acid and protein biomarkers in complex environments such as serum can be realized. The sensor disclosed by the invention is simple to prepare, high in detection sensitivity and good in reliability, can realize high-sensitivity detection of biomarkers with extremely low abundance in the early stage of lung cancer, and has good universality for various tumor biomarkers.

The invention discloses a multicomponent surface enhanced Raman spectroscopy (SERS) detection method based on composite photonic crystal microspheres. The multicomponent SERS detection method comprises the following steps of uniformly modifying quantum dots on the surfaces of titanium dioxide photonic crystal microspheres coated with sliver nanoparticles by an avidin-biotin system to generate an encodable composite photonic crystal microsphere material; combining the quantum dots with a titanium dioxide photonic crystal microsphere substrate material coated with the silver nanoparticles, and applying a combined substance in multicomponent surface enhanced Raman spectroscopy detection; realizing multielement detection for different biomolecules by combining encoding/decoding of the quantum dots with a Raman signal. According to the multicomponent SERS detection method disclosed by the invention, by using the titanium dioxide photonic crystal microspheres coated with the sliver nanoparticles as an encoding carrier, the multicomponent SERS detection method has the advantages of large specific surface area, high biocompatibility, simplicity and quickness in operation process and the like during biological detection; a fluorescence spectrum peak of the quantum dots is combined with a SERS characteristic spectral apex, so that the multicomponent SERS detection method can be effectively applied to multielement detection of biological detection.

The invention discloses a quick readout circuit for a two-dimensional resistive sensor array and a readout method thereof, wherein the quick readout circuit and the readout method belong to the technical field of sensors. The quick readout circuit comprises the components of a line multiplexer, a row multiplexer, a scanning controller, a first voltage feedback circuit, a second voltage feedback circuit, a sampling resistor and a testing voltage input end. In reading out, a certain row is selected through the row multiplexer; a line is selected from each of two line sets which are connected in a grouped manner through the line multiplexer; two to-be-tested sensors at crossings between the lines and the row are simultaneously selected; and the resistances of the two to-be-tested sensors are calculated according to a testing voltage, an input-end voltage of the first voltage feedback circuit, and a sampling resistance. The quick readout circuit and the readout method are based on a double-voltage feedback method; data of two sensors can be read in one time; and the speed for testing the resistance of the resistive sensor array can be improved by one time, thereby greatly improving testing efficiency.

An embodiment of the invention relates to the technical field of converters, and discloses a converter detection platform and a detection method. The hardware equipment of the invention comprises a battery simulation device, a converter to be measured, a measurement device, a grid simulation device, a grid failure simulation generating device, an anti-islanding RLC device, multiple switches, and the like. There are different system combinations for different detection items, and users can quickly switch between different detection items through the automatic detection system, and adjust parameters of the equipment such as the grid simulation device, the battery simulation device and the anti-islanding RLC device, so as to achieve the detection of different items, such as anti-island detection, charge and discharge detection, and voltage adaptability detection. At the same time, the battery simulation device is selected to replace the traditional two-way DC power supply and DC load, which simplifies the converter detection platform. The detection platform can detect current non-AC side voltage levels and current transformers with different capacities on the market, and the detectioncapacity can reach megawatt level.

The invention provides a herpes virus fluorescent PCR detection kit which contains a primer with a sequence selected from SEQ ID NO: 1-6, and a probe with a sequence selected from SEQ ID NO: 7-9. The herpes virus detection kit of the invention comprises a plurality of kits, such as an EBV, HHV-6, HHV-7 single-detection kit, an EBV, HHV-6 combined-detection kit, an EBV, HHV-7 combined-detection kit, and an EBV, HHV-6, HHV-7 combined-detection kit. The invention adopts the specific primer and the Taqman probe, realizes single detection or multiple detection of herpes virus, has the advantages of strong specificity, high sensitivity, high speed, simple and convenient operation, consumable saving, low cost, and the like, can be used as a kit for detecting EBV, HHV-6, and HHV-7, and can be used for scientific research and clinical application.

The invention discloses a detection mechanism of a spigot. The detection mechanism of the spigot comprises a positioning pressing block, a dial indicator and a zero adjustment block, wherein the dial indicator is longitudinally fixed on one side face of the positioning pressing block, the other side face of the positioning pressing block protrudes outward to form two parallel and spaced protruding lugs, a tightening screw is further arranged and meshed within the two protruding lugs through threads, the axis of the tightening screw is parallel to the direction of the axis of a measuring head of the dial indicator, one end face of the positioning pressing block close to the measuring head of the dial indicator extends towards the other side face of the positioning pressing block to form two spaced positioning ends, a positioning block is further arranged on one end face of the positioning pressing block which is closes to the measuring head of the dial indicator, and a contact point is arranged on the outer side face of the positioning block. The detection mechanism of the spigot can reduce the occurrence of a positioning detection mechanism with the same types, greatly improve own space of an inspection device, and therefore the operation is faster and more convenient.

The invention discloses a readout circuit of a resistive composite sensor array, and belongs to the technical field of a sensor. An array structure and a corresponding readout circuit are designed based on a dual-voltage feedback method for solving the problem of data reading speed of a two-dimensional array composed of resistive composite sensors each internally comprising even-numbered two-terminal resistive sensitive units. Resistance of two resistive sensitive units sensitive to different physical amounts in the same resistive composite sensor can be read through single detection, such that the data detection speed of the sensor array can be substantially improved, and at the same time, the complexity of a sensing system is effectively reduced. The invention further discloses a readout method of the readout circuit. Compared to the prior art, the detection speed is faster, some to-be-tested resistive sensitive units needing high-frequency detection can be detected multiple times in scanning of one time, and besides, the circuit complexity and the realization cost are lower.

The invention discloses a microtubule biochip based on photonic crystal microspheres. The microtubule biochip is composed of a top cover, an eyelet-carrying panel, a flat-ended test tube and an independent soft rubber cover. Microspheres used for detecting a carrier are loaded in the flat-ended test tube. The microspheres have photonic crystal codes, which can be decoded in the way of measuring reflective peak position by a fiber optic spectrometer or distinguishing colors by the naked eye. A probe, which could be nucleic acid or protein, is fixed to the surface of the microspheres. The pretreated microspheres with the different codes can move freely at the bottom of the test tube. According to the invention, a photonic crystal coding liquid chip technology is taken as a basis and integrated in the microtubule chip device, thus avoiding breakdown and loss of the photonic crystal microspheres during experiment operations and raising repeatability and accuracy of experimental data.