6results about How to "Realize localization" patented technology

The present application relates to a kind of computing method for realizing wide range dynamic noise map system fast update, comprising the following steps: using the data information of system database, based on existing day and night period and city road grade, simplify the structure of traditional road sound level mechanism model;Using big data technology, using hybrid modeling method, regression each grade road sound source (day and night) sound level contribution amount prediction model;Road noise fast calculation method based on sound level contribution amount prediction model is constructed, the fast update of dynamic noise map is realized.Compared with prior art, while ensuring the calculation precision, the operation and update efficiency of noise map system is greatly improved, and the technical constraints of foreign core computing software are broken, the localization of noise map core computing technology is realized, which provides technical support for wide range deep development of noise map.

The invention discloses an ultrahigh pressure air valve component unit performance test device and method, and the device comprises an ultrahigh pressure compression closed circulation system which comprises an ultrahigh pressure air cylinder, a plunger and an ultrahigh pressure air valve test component, and ultrahigh pressure air enters an air cylinder compression cavity through an air inlet pipeline along an air inlet channel; ultrahigh-pressure gas in the gas cavity compression cavity is exhausted to the ultrahigh-pressure pressure relief device through an exhaust channel, the ultrahigh-pressure pressure relief device is connected to the gas inlet pipeline through a bypass pipeline, and a cyclotron is arranged on the gas inlet pipeline, prepares the ultrahigh-pressure gas into radioactive gas and introduces the radioactive gas into the ultrahigh-pressure cylinder; a scintillation detector array is arranged outside the ultrahigh-pressure cylinder, covers the whole ultrahigh-pressure cylinder and is used for capturing the flowing range of radioactive gas in the ultrahigh-pressure cylinder. The device has the functions of accurate ultrahigh-pressure gas loading, adjustable cycle frequency, working performance monitoring and the like, so that effective experimental means and technical guarantee are provided for localization of key parts.

The invention discloses a multi-mode intelligent analyzer based on an FPGA, and the analyzer comprises a signal input unit which is used for carrying out the filtering processing of two paths of inputted analog signals; the analog-to-digital conversion unit is used for performing analog-to-digital conversion processing on each path of filtered analog signal to obtain a corresponding time domain signal; the wireless communication module is used for receiving a preset parameter threshold value set by a user; the FPGA main control unit comprises two parallel signal processing assembly lines which are used for carrying out frequency domain transformation on the received two paths of time domain signals in parallel to obtain frequency domain signals; the intelligent judgment module is used for performing parameter analysis on the frequency domain signal to obtain parameter characteristic data, and judging a preset parameter threshold value and the parameter characteristic data to obtain a judgment result; the display information fusion module is used for fusing the time domain signal, the frequency domain signal, the parameter characteristic data and the discrimination result to obtain a fused video data stream; and the display unit is used for displaying the fused video data stream and realizing multi-modal data display on the same screen.

The application provides a modular radio frequency receiving front end with fast power-on capability. The modular radio frequency receiving front end comprises a filtering limiting front end, a switch filtering amplification circuit, a power division circuit, a large dynamic SDLVA circuit and an SDLVA power supply circuit, and is connected with each functional module through an SMP joint to realize modular design, detects the performance of each circuit through multi-stage self-checking, increases the isolation degree between the SDLVA chip and the rear-stage operational amplifier circuit through an operational amplifier, and provides the power supply voltage of the ns level rising edge for the SDLVA detection module, so as to reduce the complexity of the radio frequency signal interconnection and the power supply control wiring of the multi-channel receiving front end, and has the characteristics of modular design, high sensitivity, high reliability, strong universality and the like.

This invention provides a high-temperature wear-resistant, oil-free lubricating metal-ceramic composite mold core material for producing antibiotic vials, made from the following raw materials in the indicated mass fractions: molybdenum 3%–6%, titanium 0%–2%, tungsten carbide 6%–10%, titanium carbide 20%–25%, hexagonal boron nitride 1%–5%, nickel-coated graphite 2%–4%, with the balance being nickel. The method for preparing the metal-ceramic composite mold core material is as follows: hexagonal boron nitride powder is dispersed in anhydrous ethanol and ultrasonically treated; then, powdered molybdenum, titanium, tungsten carbide, titanium carbide, nickel-coated graphite, and nickel are mixed; after wet mixing, a composite slurry is obtained; the composite slurry is dried and then placed into a graphite mold lined with graphite paper for hot pressing and sintering; after cooling, the high-temperature wear-resistant, oil-free lubricating metal-ceramic composite mold core material for producing antibiotic vials is obtained. The process of this invention is simple and controllable, and the prepared mold core material exhibits excellent self-lubricating and wear-resistant properties at high temperatures, making it suitable for use in the pharmaceutical industry for producing mold cores for controlled antibiotic vials.

The invention discloses a low-power-consumption high-precision positioning method based on an intranet RTK technology. The method comprises the steps that S1, a base station network and a service platform are deployed, and a terminal collects, formats, compresses and uploads Beidou original observation data; s2, the platform collects data of the terminal and the base station, constructs a differential processing model, generates high-precision differential correction information in real time, and issues the high-precision differential correction information to the terminal through an internal network; s3, differential data are received and analyzed, data preprocessing, Kalman filtering, ambiguity fixing and fixed solution verification algorithm processes are sequentially executed in combination with self observation values, and centimeter-level accurate position coordinates are finally solved; s4, low-power-consumption operation is realized through a dynamic power management strategy and a time-triggered sleep wake-up mechanism, and the stability, precision and update frequency of positioning are maintained in a high-speed and high-interference dynamic scene by using adaptive Kalman filtering and a fast convergence algorithm; the method has the advantages of high positioning precision, low use power consumption, wide application range and safe and reliable data.