11results about How to "Avoid low detection accuracy" patented technology

The invention relates to a configuration method and device, equipment, a readable storage medium and a program product. The method comprises the following steps: acquiring target power change data of a power grid corresponding to a plurality of target historical time periods, a target voltage sag observability matrix corresponding to the power grid can be constructed according to the target power change data, so that a target configuration strategy is obtained according to the target voltage sag observability matrix, the reference number of monitoring devices corresponding to the power grid and a configuration solving model, the target configuration strategy is used for indicating whether the monitoring device needs to be configured for each device in the power grid. By adopting the method, the monitoring accuracy can be improved.

The utility model provides a road test detection device for pavement deflection detection, and relates to the technical field of pavement deflection detection, the road test detection device comprises a frame body and a measuring assembly, the frame body comprises a connecting frame A and a connecting frame B, and gradienters are fixed on the connecting frame A and the connecting frame B. According to the road test detection device for pavement deflection detection, the connecting frame A and the connecting frame B can be in threaded connection together through cooperation of the threaded sleeve and the first threaded rod, higher fixing stability is provided through threaded connection, the situation that the detection precision is reduced due to the fact that the sliding fit clearance is too large or too small is avoided, mounting and dismounting are convenient, and the practicability is high. And a second threaded rod can be screwed into a storage threaded hole by rotating a fixed column, so that storage of the connecting frame A, the connecting frame B, the second threaded rod, the fixed column, a third threaded rod and the bottom plate is realized, the storage design of the device is optimized, and the storage convenience is improved.

The invention discloses a safety helmet wearing intelligent monitoring method based on YOLOv8-CBAM. The method comprises the following steps: constructing a safety helmet wearing condition data set; a YOLOv8-CBAM deep learning model is constructed; training the safety helmet wearing condition data set based on a YOLOv8-CBAM deep learning model until the loss function converges or reaches a preset number of iterations; and detecting the wearing condition of the safety helmet based on the YOLOv8-CBAM model. According to the invention, whether the worker wears the safety helmet can be monitored, the detection accuracy is high, the model robustness is high, and the operation speed is high.

The utility model provides a physical and chemical parameter detection device for in-vitro biosynthesis. The physical and chemical parameter detection device comprises a plurality of physical and chemical parameter sensors, a closed detection box body, a liquid taking pipeline and a liquid returning pipeline, the detection box body is used for accommodating a detection sample from a reaction tank for carrying out in-vitro biosynthesis reaction, and a probe of the sensor is inserted to detect the sample; two ends of the liquid taking pipeline are respectively communicated with the detection box body and the reaction tank, and a detection sample enters the detection box body from the liquid taking pipeline; two ends of the liquid return pipeline are respectively communicated with the detection box body and the reaction tank, and a detection sample in the detection box body is discharged from the liquid return pipeline. The utility model further provides an in-vitro biosynthesis reaction system with the physical and chemical parameter detection device. According to the utility model, the reaction liquid is conveyed into the detection box body outside the reaction tank for real-time detection, the reaction liquid in the detection box body can flow back into the reaction tank, and the sensor is positioned in the detection box body, so that the service life of the sensor is prolonged.

This invention relates to the technical field of bending resistance testing, and discloses a method for testing the bending strength of power pipes. The method includes: inserting the support structures of a first clamping assembly and a second clamping assembly into both ends of the power pipe, and driving a cylinder of the support structure to perform a step-by-step progressive clamping process to clamp the power pipe; driving a compression assembly to apply pressure to the power pipe; and when the power pipe reaches a bent state, using the current pressure value of the compression assembly as the bending strength value of the power pipe. This invention's method for testing the bending strength of power pipes decomposes the clamping process by introducing a step-by-step progressive clamping process, avoiding overload and pre-stress introduction caused by continuous forced expansion, which would lead to a decrease in testing accuracy.

The application relates to the field of pipe curtain jacking technology, in particular to a pipe curtain jacking construction method for a box culvert under an airport runway, which has the beneficial effects that: through the device with real-time precision adjustment and monitoring, strict precision control is realized on each process in the jacking process, problems are found and timely measures are taken for correction, each monitoring point in the jacking process communicates through a intercom, timely and effective construction is ensured, the construction precision in the jacking process is improved, deviation is avoided, and the protection of the soil layer is effectively improved.

The utility model relates to the technical field of coating liquid production discloses a kind of coating liquid production blending temperature detection devices, including jar body, the top of the jar body is fixedly connected with support, the inside top of the jar body is rotatably connected with anchor type rotor, the top of the jar body is provided with driving mechanism, the top right side of the support is provided with storage mechanism, the top left side of the support is provided with cleaning mechanism, the cleaning mechanism is used for high-pressure water flow flushing device inside, the bottom of the anchor type rotor is provided with temperature detection mechanism, the temperature detection mechanism is used to detect raw material temperature when stirring, the front bottom of the jar body is provided with drainage mechanism. In the utility model, scraper sleeve is fixed to the bottom of anchor type rotor, hydraulic rod drives probe to retract, scraper sleeve bottom scrapes off adherend when probe retracts, avoid the surface of temperature sensor to be adhered by material, avoid causing measurement lag, effectively keep the accurate measurement of temperature.

The invention discloses an abnormal vibration signal detection method and device, equipment and a storage medium. The method comprises the following steps: acquiring a to-be-detected vibration signal, and extracting a plurality of sub-sequence signals from the vibration signal based on a preset sliding window and a preset sliding step length; performing discrete Fourier transform on each sub-sequence signal to obtain a corresponding frequency domain sequence, and determining the rank number of each element value according to the size sequence of each element value in the frequency domain sequence; determining a similarity coefficient between each frequency domain sequence and the frequency domain sequence corresponding to the first sub-sequence signal according to the rank number of each element value in each frequency domain sequence and the rank number of each element value in the frequency domain sequence corresponding to the first sub-sequence signal; and under the condition that the similarity coefficient corresponding to any frequency domain sequence is smaller than a preset similarity threshold value, determining that the vibration signal is an abnormal vibration signal. Through the above technical means, abnormal vibration signals can be accurately detected without adopting an abnormal detection model, and the accuracy and reliability of subsequent fault analysis are improved.

This utility model relates to the field of safety protection light curtain technology, and specifically discloses a safety protection light curtain for automated equipment. The light curtain includes a monitoring component comprising a substrate, an accelerometer, and a buzzer. The outer surface of the protective cover has several through holes for real-time acquisition of triaxial vibration acceleration data. The system has a preset vibration threshold. When the number of times the vibration acceleration in any axis exceeds the threshold reaches a set value, it is immediately determined that the safety light curtain has a loose installation or displacement fault. At this time, the accelerometer immediately outputs a high-level signal to the buzzer, triggering the buzzer to emit a continuous alarm, reminding on-site personnel to check for potential hazards and avoid a decrease in detection accuracy due to accumulated offset. This effectively avoids the risk of safety protection failure due to safety light curtain offset, providing more reliable safety protection for operators and equipment operation, and significantly reducing the probability of mechanical injury accidents.

The invention provides an online ore pulp multi-element grade analysis system. A filter assembly is used for filtering liquid in ore pulp to form ore-containing filter blocks; the material cake drying assembly is used for drying the ore-containing filter block to obtain a dried filter block; the cake crushing assembly is used for crushing and drying the filter blocks to obtain mineral powder; the mineral powder pressing assembly is used for pressing mineral powder into sample cakes for detection, the cake crushing assembly comprises a crushing shell, a crushing disc, a crushing driving mechanism and a feeding mechanism, the feeding mechanism is used for conveying dried filter blocks to the crushing disc, and the crushing disc is arranged in the crushing shell in a rotatable mode; the crushing mechanism is used for crushing the dried material blocks conveyed by the feeding mechanism so as to crush the dried material blocks into mineral powder; the crushing driving mechanism is used for driving the crushing disc to rotate. According to the invention, direct contact detection can be carried out without a detection window, and the problem of low detection precision caused by direct contact of ore pulp for element detection in the existing grade instrument detection is solved.

The invention relates to a wire harness detection device for a new energy automobile, and relates to the field of automobile maintenance equipment, the wire harness detection device comprises a detection platform, the output end of an oil cylinder is connected with the surface of a sleeving frame, the bottom of the sleeving frame is provided with a liquid storage box, and the bottom of the liquid storage box is connected with an elliptical nondestructive detection unit; the nondestructive detection unit comprises an infiltration detection area, cleaning detection areas and a scanning detection area, the tops of the two ends of the infiltration detection area are connected with the cleaning detection areas, the tops of the two cleaning detection areas are connected with the scanning detection area with the cross section being of an inverted-U-shaped structure, and a plurality of scanning lenses are embedded in the surface of the scanning detection area; in the wire harness detection equipment for the new energy automobile, the nondestructive detection unit can detect various cracks on the surface of the wire harness by using the operation of mark detection, and meanwhile, the abrasion of the surface of the wire harness caused by polishing and the reduction of the detection accuracy caused by the operation of jacking up and amplifying the cracks can be avoided.