13results about How to "Fast detection response" patented technology

The present invention relates to a driving state detection and early warning system and method based on multimodal technology, so as to solve the technical problem that the driver is prone to red vision or black vision during high-speed driving, which leads to serious driving accidents. The system includes a helmet unit and a remote control module; the helmet unit includes a shell, an eye tracking detection module, a cerebral blood oxygen detection module, a signal processing module, a voice interaction module, a power supply module and a reference coordinate construction module. The method includes: 1. Wearing a helmet unit, constructing a reference coordinate system of the driving area, and dividing at least one high-heat area; 2. Starting each module of the helmet unit, real-time detection of the driver's eye capillary texture characteristics, attention mechanism distribution characteristics and cerebral blood oxygen real-time data characteristics, and issuing a warning signal according to the detection results. The present invention conducts a real-time safety assessment of the driver's state and issues a warning through multi-channel, multi-dimensional and multi-modal analysis.

The invention provides a display device, which comprises a display panel, a first circuit board, a second circuit board, a flexible connecting piece for connecting the first circuit board and the second circuit board, a first switch unit, a second switch unit, a third switch unit and a third switch unit, the second switch unit and the third switch unit are arranged on the second circuit board, in a first state, the first switch unit and the second switch unit are in a conducting state, the third switch unit is in a cut-off state, the detection signal end, the first switch unit, the flexible connecting piece and the second switch unit form a conducting detection loop, and in a second state, the second switch unit is in a cut-off state. The first switch unit and the second switch unit are in a cut-off state, the third switch unit is in a conducting state, and the flexible connecting piece transmits a function signal to the signal output end through the third switch unit. According to the technical scheme, oblique insertion detection and circuit protection can be realized under the condition that a signal line of the flexible connecting piece is not additionally occupied.

The present invention provides a method for improving the performance of an aptamer field effect transistor biosensor, comprising: obtaining a transfer characteristic curve of an aptamer-based field effect transistor biosensor and obtaining its subthreshold interval; obtaining the charge polarity of the aptamer modified by the field effect transistor biosensor in a solution environment; combining the subthreshold interval and the charge polarity of the aptamer to obtain a first voltage interval opposite to the charge polarity of the aptamer, and the first voltage interval is within the subthreshold interval range; biasing the liquid gate voltage of the field effect transistor biosensor within the first voltage interval to detect the object to be detected in the solution. Through the method of the present invention, a suitable voltage range can be obtained. When the liquid gate bias of the sensor is within the voltage range, the aptamer modified on the field effect transistor biosensor will be perpendicular to the channel surface, so that the volume of the aptamer is increased, thereby improving the binding efficiency of the aptamer and the object to be detected, and finally making the sensor have a lower detection limit and a higher detection sensitivity, thereby improving the detection performance of the sensor.

The present invention relates to the technical field of organic supramolecular chemical materials, and in particular to a red light emitting gel factor, a fibrous gel soft material, and a preparation method and application thereof. The gel factor is a cholesterol-phenyl-maleonitrile-juronidine compound, which exhibits red light emission in a solution state and has a strong affinity for Cu 2+ The invention has good single selectivity and fluorescence "on-off" detection response; the gel factor can form a rod-shaped fiber gel soft material in a mixed solvent of chloroform and methanol with a volume ratio of 3:2, and the fiber gel soft material encounters Cu 2+ Then its red fluorescence emission is quenched.

The utility model relates to the technical field of rainfall detection, and discloses a detection device and outdoor equipment, and the detection device is arranged on the outdoor equipment, and comprises a water collection main body, a detection electrode and a drainage structure. The water collecting main body is provided with a flow guide slope and a water collecting part which is concavely arranged, and the flow guide slope is positioned on the upper surface of the water collecting main body and is communicated with the water collecting part, so that rainwater flows into the water collecting part after being guided. At least two detection electrodes which are arranged at intervals are arranged in the water collection part, a conduction loop can be formed after the water collection part is immersed by rainwater, a resistance value is generated, and the resistance value changes along with the immersion area of the electrodes, so that the rainfall condition is reflected. The drainage structure is arranged on the side portion or the bottom of the water collecting body, communicated with the bottom of the water collecting portion and used for draining accumulated water in time, and false alarms caused by rainwater retention are avoided. According to the detection device, effective collection and diversion of rainwater can be realized, meanwhile, the sensitivity and accuracy of detection are ensured, and the detection device is suitable for environment monitoring scenes of various outdoor equipment.

The application discloses a formaldehyde concentration detection method based on image recognition and relates to the technical field of formaldehyde concentration detection.The method comprises the following steps: S1, standard solution color development: taking nine colorimetric tubes with consistent specifications, preparing different concentration standard formaldehyde solutions in each colorimetric tube, and adding a color developing solution to develop color. The formaldehyde concentration detection method based on image recognition does not need to rely on large laboratory equipment such as a spectrophotometer, but can complete detection only through standardized image acquisition and an AI model, supports on-site instant operation, greatly improves detection portability and scene adaptability, meets the requirements of rapid detection in multiple scenes such as indoor and in-vehicle scenes, and avoids interference factors such as manual colorimetry, operation methods and environmental illumination through a standardized color development, image acquisition and AI correction process, and the model is optimized with mean square error and mean absolute error as core indexes.

The present invention discloses an open set target detection method, device and equipment based on a cloud-edge-end architecture, and relates to the field of visual language detection technology. The cloud server can obtain the text input by the user uploaded by the edge device and extract the language features in the text, and then perform classification mapping based on the preset category table to determine whether the categories described in the text all appear in the preset category table. If there are new categories, the visual features extracted by the edge device from the image input by the user are obtained, so as to perform feature fusion of the language features and the visual features to obtain the visual language feature encoding, and determine the target to be detected corresponding to the text in the image according to the visual language feature encoding and send it to the edge device. If there is no new category, the edge device determines the target to be detected corresponding to at least some categories in the preset category table according to the image input by the user. The present invention improves the practicality of open set target detection in the actual scenario of the cloud-edge-end architecture.

The invention provides a rapid water pollution index monitoring device based on microfluidics, and relates to the technical field of monitoring devices.The rapid water pollution index monitoring device comprises a shell, a detection cover, a triggering mechanism, a floating mechanism and an adjusting mechanism, and through cooperation of multiple sets of independent sampling spaces and a linkage adjusting mechanism, layered collection of upper-layer, middle-layer and lower-layer water bodies can be automatically completed; the method ensures that the monitoring data can comprehensively reflect the vertical distribution condition of water body pollution, meanwhile, the sampling process and the detection process are synchronously carried out, complex preprocessing operation is not needed, by means of the chromogenic reaction and image transmission technology, the detection response speed is greatly increased, rapid feedback of pollution indexes is achieved, and the real-time pollution state of the water body is accurately captured; accurate sampling and synchronous detection of different depth levels of a monitored water body are achieved, and the problems that a traditional monitoring device can only conduct single-depth monitoring and is high in data limitation are effectively solved.

The utility model discloses a quick response automobile carbon emission detection device, and relates to the technical field of automobile detection equipment, the quick response automobile carbon emission detection device comprises a portable box, the front end of the portable box is provided with an operation display screen, two ends of the portable box are rotatably provided with two groups of concave handles, the other side of the portable box is provided with an air inlet pipe in a penetrating manner, and the air inlet pipe is provided with an air outlet. And a second frame plate is mounted in the portable box. According to the utility model, the ultraviolet differential absorption spectrum detection module, the non-dispersive infrared absorption detection module and the electrochemical detection module are arranged to respectively detect different gas components in automobile exhaust, so that the response time of the ultraviolet differential absorption spectrum detection module to NO and NO is shortened, the detection response speed is greatly improved, and the rapid detection requirement is met; and meanwhile, the compensation and correction functions of the environmental parameter acquisition module and the data processing unit are combined, so that the detection precision is effectively improved.

The invention provides an indoor unit and an air processing unit. The indoor unit comprises a shell assembly, a heat exchanger, a first conversion pipe, a sensor and a flow guide assembly. A first cavity is defined by the shell assembly, the shell assembly comprises a first plate body, and the first plate body is provided with a first through hole and a second through hole which are communicated with the first cavity. The heat exchanger is arranged in the first cavity and comprises a first external connector, and the first external connector is arranged in the first through hole in a penetrating mode. The sensor is arranged in the shell assembly. The flow guide assembly is suitable for being connected with the side wall, away from the first cavity, of the first plate body and arranged outside the first external connector, the first conversion pipe and the first internal connector in a sleeving mode. The flow guide assembly is suitable for forming a first flow guide cavity communicating with the second through hole together with the first plate body, the first external connector, the first conversion pipe and the first internal connector. The internal and external leakage phenomena can be detected while the cost is saved, and the detection effect is better.

This utility model belongs to the field of metal sheet forming and processing technology, specifically disclosing a device for detecting bending defects in aluminum curtain wall panels. The device includes a workbench with a through-hole mounting groove on its end face. A bending assembly is installed within the mounting groove. A clamping assembly is located below the workbench, and a mounting base is located above the workbench. The bending assembly includes two support plates symmetrically fixed to the side walls of the mounting groove, forming a bending channel one between the two support plates. Each support plate has a downward-sloping surface on its end face away from the mounting groove, making the opening of bending channel one larger as it approaches the clamping assembly. A bending roller and a hinged bending plate are respectively installed above the two support plates, forming a bending channel two between them. This bending channel two connects with bending channel one to form a channel to be bent. This device solves the problem of aluminum sheet performance being damaged due to excessive bending defects during the bending process in current devices.

This invention specifically relates to a gas concentration measurement method, aiming to address the technical problems of existing gas concentration measurement methods, such as systematic inversion bias, sensitivity to environmental conditions, insufficient robustness to changes in system response, difficulty in balancing computational complexity and real-time performance, and insufficient inversion stability under low signal-to-noise ratio conditions. This invention detects a target area to obtain a reference spectral image, a spectral image of the gas to be measured, and a water vapor spectral image. Through dark-field and flat-field correction, it obtains the reference equivalent radiance, the equivalent radiance of the gas to be measured, and the equivalent radiance of water vapor. Normalization is performed using the reference equivalent radiance to obtain the logarithmic absorbance of the gas to be measured and the logarithmic absorbance of water vapor. Water vapor absorption interference is subtracted using the logarithmic absorbance of water vapor, finally yielding the concentration of the gas to be measured. This reduces the influence of water vapor absorption on the detection results and improves inversion stability.

The invention discloses a working electrode which comprises a substrate electrode, and the surface of the substrate electrode is modified with a graphene-gold nanoparticle-cerium dioxide compound or a graphene-gold nanoparticle-molybdic acid compound. The nitrite and nitrate are detected by using the working electrode modified with the graphene-gold nanoparticle-cerium dioxide compound, the phosphate is detected by using the working electrode modified with the graphene-gold nanoparticle-molybdic acid compound, and both the sensitivity and the detection response speed are high. On the basis of the working electrode, the invention further provides an electrochemical sensor which has multiple parameter analysis item selections. Furthermore, the invention further provides an electrochemical detection system which can perform online sampling, online detection and automatic cleaning and provide more comprehensive detection information, and the electrochemical detection system is simple and reliable in corresponding structure, convenient to carry and beneficial to online monitoring or field detection. In addition, the invention also correspondingly provides an electrochemical detection method.