7results about How to "Maintain detection accuracy" patented technology

The invention discloses a water quality detection device for agricultural water, and relates to the technical field of agricultural water and soil engineering, the technical key point is that the device comprises a water quality detection assembly, a water pumping assembly and an energy supply assembly, and water samples at different depths can be collected through an electronic water pump for multilayer water quality analysis. The device is provided with a multi-parameter water quality detector, water quality parameters such as pH value, TDS value, heavy metal concentration and the like can be detected, and automatic water quality monitoring is achieved. The device is based on a single-chip microcomputer control system, water sample collection, detection, data processing and display are automatically completed, and the operation process is simplified. The device is powered by solar energy, has self-energy-supply capability and is suitable for outdoor use. The unique structural design of the device has the protection function of the protective cylinder, the conical top cover and the absorbent cotton, can effectively prevent the influence of external environments such as rainwater and dust on equipment, prolongs the service life of the equipment, and is very suitable for detecting the farmland irrigation water quality, monitoring the water quality of water sources such as lakes and rivers and ensuring the safety of irrigation water.

The utility model provides a kind of radioactive contamination dynamic boundary prediction device, belong to nuclear science and technology field, to solve the detection of direct use Geiger counter, leading to the inaccuracy of the detection result of Geiger counter, influence the accuracy of radioactive contamination boundary prediction problem, including Geiger counter main part, control knob, detection holding frame, detection head, dustproof driving mechanism and operation warning mechanism;The control knob is rotationally connected above the Geiger counter main part;The detection holding frame is fixedly connected above the Geiger counter main part;The detection head is fixedly connected above the detection holding frame;The dust cover is rotationally connected at the front end of detection holding frame, and the dust cover is arranged at the front end of detection head;The dustproof driving mechanism is arranged outside the detection holding frame;The operation warning mechanism is arranged above the Geiger counter main part, standardizes the operation procedure of worker, guarantees the accuracy of radioactive contamination detection result.

This invention discloses a lifting device for seed processing and transportation. It utilizes multiple dust removal modules instead of a single dust removal device in existing technologies, resulting in a smaller size and less noise. Furthermore, in the event of a single dust removal module failure, the other modules can assist in controlling dust concentration without requiring the main body of the elevator to be shut down for maintenance, thus increasing the safety of the elevator and facilitating the maintenance of the dust removal module's detection accuracy and efficiency. The invention also incorporates buffer steps and buffer supports, using the impact between the buffer steps and buffer supports to control the speed of the sliding inner frame, preventing it from sliding directly out of the fixed outer frame and thus reducing the risk of damage to the inner frame and dust collection unit. Additionally, pressure relief holes and sealing bolts provide new pressure relief locations for the dust removal modules, further enhancing the safety of the elevator.

The utility model discloses a mounting rack for indoor environment detection equipment, which relates to the field of environment detection equipment and comprises a rack plate, a mounting groove is mounted on the inner side of the rack plate, sliders are connected to two sides of the mounting groove, a sliding groove is arranged on the inner side surface of the mounting groove, the sliders are in sliding fit with the sliding groove, and a telescopic baffle is mounted on one side of the mounting groove. The bottom end of the telescopic baffle is connected with a damping shaft, the side surface of the damping shaft is rotationally connected with the mounting groove, a groove is formed in one side of the frame plate, a fan is connected into the groove, the output end of the fan is connected with an air guide pipe, the air guide pipe is of a telescopic structure, one end of the air guide pipe is connected with an air outlet plate, the air outlet plate is matched with the mounting groove in position, and one side of the frame plate is further connected with a mounting plate. The fan is mounted on one side of the frame plate, one end of the air guide pipe at the output end of the fan is connected with the air outlet plate, and the air outlet plate is positioned above the mounting groove, so that deposited dust at the upper end of the detection equipment is blown away, and the detection sensitivity and precision of the detection equipment are kept.

The invention discloses a steel cable surface defect detection method based on an improved SSD algorithm, and the method comprises the steps: S1, constructing a steel cable surface defect data set which comprises a plurality of steel cable images and defect types corresponding to the steel cable images; s2, constructing a steel cable surface defect detection neural network, and training the steel cable surface defect detection neural network by using the data set to obtain a steel cable surface defect detection model; the steel cable surface defect detection neural network is constructed based on an SSD network, RestNet18 is introduced to serve as a backbone of the SSD network, a one-way feature fusion block and an improved CBAM attention module are introduced, and meanwhile, Focus serves as a loss function. And S3, acquiring a steel cable image in real time, and inputting the steel cable image into the steel cable surface defect detection model to obtain a corresponding defect category. According to the steel cable surface defect detection method based on the improved SSD algorithm, the steel cable production efficiency can be effectively improved, and the labor cost is reduced.

This invention discloses an online CO concentration detector and analyzer for use in the field of detection and analysis instruments. It comprises a main body, a pretreatment cylinder, and a modular filter assembly. The pretreatment cylinder contains a flow guide cover, a sleeve, and a filter element, achieving fluid diversion and filtration through a double-layer perforated group. The bottom vent cover is quickly removable, and the built-in filter box allows for flexible switching between air and liquid filter components, adapting to various forms of fluids, including gaseous and liquid states. The sampling component employs an electrically driven valve tube structure. This solution can detect CO concentration in a gaseous environment and can also achieve online monitoring of CO concentration in water by replacing the liquid filter assembly. It supports open environment detection and can also directly connect to an external test pipeline that has undergone pre-filtration to achieve direct detection of CO concentration within the pipeline. When the impurity content of the test liquid is low and continuous online monitoring of large-flow water is required, the replacement and maintenance steps of the filter assembly can be omitted, and detection can be completed directly.

The application relates to the field of measuring instruments, and discloses a device for measuring the volume of a gravel pit hole. In the application, a fixing base is welded to the upper surface of a bottom plate, a support framework is arranged on the side surface of the fixing base, a soft rubber pad layer is movably connected to the upper and lower surfaces of the support framework on the side surface of the fixing base, a support frame is movably connected to the upper surface of the fixing base, an inlet cover is welded to the side surface of the support frame, and an exhaust valve cap is movably connected to the outer surface of the inlet cover. The bottom plate is placed on a gravel pit hole, a reference hole is arranged to correspond to the gravel pit hole, the soft rubber pad layer is attached to the upper and lower surfaces of the support framework, the whole is inserted into the fixing base, the support frame is also inserted into the fixing base, air is filled through the air inlet interface, after the gravel pit hole is filled, the exhaust valve cap is lifted upward, the time is recorded through the inflation mechanism, and the volume of the corresponding pit hole is measured through calculation.