8results about How to "Reduce detection accuracy" patented technology

The application discloses a structure for realizing high-voltage current detection, which is characterized by the connection of a main input pair and an auxiliary input pair with an output stage NMOS transistor, thereby avoiding the introduction of inherent imbalance due to the current of the detection circuit, reducing the precision of high-voltage current detection, and being beneficial to improving the precision of high-voltage current detection and reducing the number of high-voltage transistors used in the detection circuit.

The invention relates to quantitative detection of a semiconductor wet etching solution, in particular to a near-infrared detection method for the content of acid and ammonium acid in an organic system, which comprises the following steps: carrying out uniform formula design on a modeling sample, and calculating the content of acid and ammonium acid in the modeling sample by applying a basic principle of a stoichiometric method through a partial least square method. The method for quantifying the mass fractions of the acid and the acid ammonium in the organic system is formed by associating near infrared spectrum data of a sample with the mass fractions of the acid and the acid ammonium through spectrum pretreatment, analysis waveband selection, determination of optimal modeling parameters such as the optimal number of main factors and a root-mean-square error (RESECV) of cross validation and the like and establishing a model. Compared with a traditional titration method and a gas-phase liquid-phase detection method, the method has the advantages that the time consumption is long (more than 15 minutes) and the precision is poor (more than 0.5%), the interference of similar structures of acid and acid ammonium can be effectively eliminated, and the detection precision is within 0.05%; moreover, the quantity of modeling samples required by the method is only 25-35, so that the modeling workload (the quantity of general near-infrared modeling samples is 100-300) is reduced, and the requirements on accuracy and high efficiency of product content inspection can be met.

This utility model relates to the field of infrared imager technology, and specifically discloses an infrared imager for detecting volatile organic compound (VOC) leaks. It includes a detection host, a detection lens, and a support pan-tilt unit. When the device encounters an external impact, the main protective shell, buffer connecting seat, and light-transmitting protective plate form the first line of defense, directly preventing tools, parts, and other external objects from directly contacting the detection lens. This avoids scratching the high-precision optical lens, thereby preventing infrared signal acquisition distortion and ensuring the accuracy of VOC leak detection. If the impact force acts on the front of the light-transmitting protective plate, the two return springs between the light-transmitting protective plate and the main protective shell are compressed synchronously. The elastic deformation of the springs absorbs the impact force, reducing the transmission of the impact force to the buffer connecting seat, the main protective shell, and the inside of the detection host. This protects precision components such as the infrared detector and signal processing module, preventing malfunctions such as decreased detector sensitivity and effectively extending the overall service life of the equipment.

The application discloses a pry-mounted hydrogen mixing ratio detection device for a gas pipeline, which comprises a sampling pipeline, both ends of the sampling pipeline are used for detachable assembly with the gas pipeline, at least one sampling port is arranged on the sampling pipeline, a hoistable support is provided with a containing position, the sampling pipeline is detachably arranged in the containing position, an analyzer is arranged on the hoistable support and connected with the sampling port, a diffusion pipeline is connected with the analyzer, and the diffusion pipeline is also used for being connected with a diffusion point of the gas pipeline. The pry-mounted device is used for integrating and mounting the sampling pipeline, the analyzer and the diffusion pipeline on the hoistable support, and the pry-mounted device can be hoisted to the gas pipeline as a whole, only the two ends of the sampling pipeline need to be connected with the gas pipeline, and the diffusion pipeline needs to be connected with the diffusion point of the gas pipeline, so that the pipeline is shortened, the viscosity and volume delay of gas flowing in the long pipeline are avoided, the data response period is shorter, the on-site workload and construction time are significantly reduced, and the detection precision can be greatly improved.

The utility model provides a kind of continuous monitoring collection device for flue gas detection, it is related to detection collection instrument technical field, including main smoke pipe, flow director, secondary smoke pipe, information integration transmitter, solar panel, mounting bracket, fan and fan frame;The inside of the main smoke pipe is equipped with six sets of threaded round holes on both sides, the outside of the flow director is equipped with a set of round holes on six sets of connecting frames, and the outside connecting frame of the flow director is fastened and connected in the inside of the main smoke pipe on upside;Fan frame middle is equipped with a set of round holes, fan bottom is equipped with a set of round head, and fan bottom is fastened and connected in fan frame middle part;The upper portion of mounting bracket one side is equipped with a set of threaded round holes, and the side of secondary smoke pipe is equipped with a set of connecting plates;Setting fan can quickly exhaust fume, prolong life;Set up smoke pipe shunt small amount of smoke dust detection, guarantee detection rod accuracy;Set information integration transmitter and solar panel, ensure stable operation and data transmission in time.

The utility model relates to the technical field of gas alarms, and discloses a positionable portable gas alarm which comprises a shell, a sliding groove is formed in the upper end of the shell, air inlet holes are formed in the two sides of the sliding groove, through grooves are formed in the two sides of the air inlet holes, a scraping plate is clamped in the sliding groove in a sliding mode, and positioning rods are installed at the two ends, facing the through grooves, of the scraping plate. A baffle is arranged above the sensor assembly, a through hole is formed in the middle of the upper end of the baffle, sealing plugs are installed on the two sides of the through hole, and limiting plates are installed on the two sides of the sealing plugs. When the alarm is carried, the baffle plate is pushed towards the air inlet through the deflector rod, so that the sealing plug is engaged and inserted with the air inlet, and then the scraper plate slides towards one side of the limiting plate, so that the limiting plate is blocked and limited by the positioning rod on the limiting plate, and the situation that the sealing plug is separated from the sealing of the air inlet due to the fact that the baffle plate retreats is avoided; and when the sealing plug blocks the air inlet hole, impurities in the air inlet hole can be discharged.

This utility model provides a ship ballast water monitoring device, including a housing. A pneumatic diaphragm pump, a vortex tube assembly, a TRO analyzer, and a cooling chamber are fixedly installed inside the housing. A compressed air inlet is provided on the outer wall of the housing. The compressed air inlet is connected to the pneumatic diaphragm pump and the vortex tube assembly via a first pipe. The outlet of the pneumatic diaphragm pump is connected to the TRO analyzer via a second pipe, which is equipped with a filter assembly. This utility model has the following advantages: the second pipe is divided into a left-side pipe and a right-side pipe, so the filter box can be sealed between the left-side and right-side pipes. The filter box can be disassembled for cleaning or removal of the internal filter components, ensuring replacement and effective use of the filter assembly. This ensures effective filtration of ballast water and maintains a high filtration efficiency, thereby improving the practicality of the device.