39results about How to "Applicable monitoring" patented technology

The invention discloses a measuring method of biological electric impedance, which is characterized in that the method comprises constant-current outputting the sine wave pumping signal with preset frequency to the measuring electrode which is arranged in a region for measuring, inspiring the region for measuring, receiving and magnifying the analog signal which passes through the region for measuring, A/D converting the analog signal, extracting a plurality of digital signals in one cycle of A/D conversion, calculating a group of impedance values corresponding to a plurality of digital signals through the fast Fourier algorithm, calculating the impedance values of different frequency points in the range of preset frequency through repeating above steps to form an impedance frequency diagram, and calculating the characteristic parameter of the region for measuring at the time point through coincidence circularity method according to the impedance frequency diagram. The invention provides pure electrical signal through effectively shielding inference signal, thereby guaranteeing the measurement precision. The invention adopts the fast Fourier algorithm and coincidence circularity method, which improves the precision of impedance calculation and effectively reduces the cost of circuit.

The invention discloses a hybrid communication system of a vehicle battery management controller assembly. The hybrid communication system combines daisy chain communication, serial port communication and CAN communication, and the system comprises a main board 02, a branch board 03, a battery set 04 and a sampling wire harness 05; the main board 02 is connected with the branch board 03 through a CAN bus; the branch board 03 is connected with the battery set 04 through the battery set wire harness 05. The inside of the branch board uses the simple daisy chain communication and serial port communication, and the branch board communicates with the main board through the more mature CAN communication with stronger anti-interference ability; the hybrid communication system of the vehicle battery management controller assembly is capable of improving the anti-interference ability and reliability of the whole system and lowering the system cost.

The present invention belongs to the field of physical property measurement and analysis of material, and relates to the grain size calculation for various inclusions in metal material. The in-situ counting and analysis of inclusions in metal material includes the following steps: conventional analysis to obtain relevant data of the grain size distribution of various inclusions in the sample via metal structure detection, chemical phase state analysis, and electronic microscope plus energy spectrum analysis; in-situ statistical analysis with in-situ metal analyzer for continuous scanning of the sample to obtain single spark spectrum strength data corresponding to the original position of the sample; system analysis to obtain single spark spectrum strength data and determine signal threshold; establishing mathematic analysis mode and comparing the data obtained in different methods to obtain the grain size distribution information of various kinds of inclusions and output result.

The invention discloses a multi-frequency information fusion-based intelligent positioning system and a multi-frequency information fusion-based intelligent positioning method. The intelligent positioning system comprises a plurality of electric three-variable CCD (charge coupled device) cameras which are provided with controllable holders and are distributed in a monitored region; the CCD cameras are communicated with a terminal; each object to be monitored carries an electronic tag; a plurality of wireless sensors are arranged on the periphery of the monitored region; the wireless sensors acquire the data information of the electronic tags; meanwhile, each wireless sensor is communicated with the terminal; and the terminal tracks the position of the object to be monitored according to the acquired data information. By the method, the aim of positioning and tracking accurately is fulfilled by performing information analysis and fusion on shot data.

The invention discloses a traffic load pavement vibration energy piezoelectric power generation measuring method and a system thereof. The traffic load pavement vibration energy piezoelectric power generation measuring system comprises a piezoelectric transduction unit, a total control module and a total measuring module which are arranged on a pavement. The piezoelectric transduction unit is used for converting pavement vibration energy into electric energy. The total control module is used for regulating speed and applying load for running vehicles and regulating electric parameters for output electric power. The total measuring module is used for measuring speed and load of a vehicle, stress and deformation of the pavement, harvested alternating-current and voltage, and transduced voltage and current. The generated electric energy can be used as a power supply to be stored and utilized. According to above condition, the traffic load pavement vibration energy piezoelectric power generation measuring system provides conditions for researching a mechanism of a pavement piezoelectric energy harvesting technology, application and popularization of the technology, and has a high academic value and social value.

The invention provides a nuclear power station thermal energy efficiency monitoring and diagnosing system and method. The monitoring and diagnosing system comprises a storage module, a data acquisition module, a core calculation module, and a diagnosis module. The data acquisition module is used for obtaining nuclear power station secondary circuit basic parameters measured by a monitoring system instrument and process parameters of a distributed control system; the core calculation module is used for calculating measured values of thermal power performance parameters of the nuclear power station secondary circuit, wherein an energy efficiency calculation model of the nuclear power unit is established on the basis of an energy efficiency distribution matrix equation established for the nuclear power station secondary circuit, and the unit specific heat consumption of the nuclear power station secondary circuit is calculated; the diagnosis module is used for determining whether the thermal power performance parameters are abnormal or not by comparing the measured values of thermal power performance parameters of the nuclear power station secondary circuit with operational reference values. According to the system and method, an energy efficiency distribution matrix equation is established for the nuclear power station secondary circuit; indexes such as unit specific heat consumption are obtained through establishing the energy efficiency calculation mode; and therefore a set of thermal energy efficiency monitoring index system is developed for a nuclear power station.

The invention relates to a nonlinear identification method for a mine water inrush source. The method comprises the following steps of (1) collecting spectrum data; (2) preprocessing the collected original spectrum data by utilizing a Savitzky-Golay (SG) smoothing technology; (3) performing data dimension reduction by utilizing a nonlinear kernel principal component analysis method, and performing nonlinear feature extraction; (4) establishing independent test set and training set by collected water samples; and (5) establishing an ELM by utilizing the training set, and then performing classification result testing through the test set. According to the method, the feature extraction is performed in a nonlinear way, so that the time and space complexity is lowered and the sample identification performance is provided; the kernel principal component analysis optimizes learning parameters of the ELM; an ELM classification model has the characteristics of few training parameters, high learning speed and the like; the KPCA and the ELM are combined for nonlinear identification of the mine water inrush source; and the method is very suitable for online water inrush source monitoring.

The invention belongs to the technical field of sensors and provides a piezoelectric film sensor with an elliptical flexible substrate. The piezoelectric film sensor comprises a piezoelectric film, aflexible substrate and an insulating protective layer. The flexible substrate of the piezoelectric film sensor is semi-elliptic cylindrical curved structure. The piezoelectric film covers the flexiblesubstrate and is fixed through the insulating protective layer. According to the flexible substrate structure, sensors are divided into an equal-arc-length ellipse elliptic flexible substrate sensorand an equal-chord-length elliptical flexible substrate sensor. According to the piezoelectric film sensor, through simulating and calculating output voltage of piezoelectric film sensors with semi-elliptical flexible substrates of different size parameters under the same action force, and an optimal flexible substrate size is determined, which means that the output voltage is taken as a basis ofdetermining the sensor flexible substrate size. The piezoelectric film sensor has higher sensitivity, and the miniaturization and arraying of sensors are facilitated.

The invention provides a construction method of a seed melon HPLC (High Performance Liquid Chromatography) fingerprint spectrum and a standard fingerprint spectrum thereof. A seed melon is deseeded, melon pulp is taken out and is arranged in a juice stirrer to be smashed for 30s, and filtrate which is seed melon juice is leached and filtered with a filter membrane of 0.45 mum, and then is used as a sample solution. HPLC analysis is carried out on the sample solution, the chromatographic column is SinochromODS-BPC18, 5mum, 250*4.6mm, the column temperature is 25 DEG C, the flowing phase is methanol and 0.2% of acetic acid water, a gradient elution way is adopted, the detection wavelength is 260 nm, and the seed melon HPLC fingerprint spectrum is obtained. 10 batches of seed melon HPLC fingerprint spectrums are compared to determine the common fingerprint characteristics and obtain the seed melon standard fingerprint spectrum. The standard fingerprint spectrum can be used for effectively monitoring the quality of seed melons and seed melon highly processed products.

The invention discloses an attitude adjustable surrounding rock stress measurement device, which comprises a stress gauge body (1) and a display instrument box (2), wherein the stress gauge body (1) is in a cylindrical shape integrally, the top end of the stress gauge body (1) is configured into a conical structure, a pressure-bearing cavity is formed in the stress gauge body (1), and a pressure-bearing block (3), a circumferential rotation angle adjusting mechanism (4), a gravity sensor (5) and a quick connector (6) are arranged on the stress gauge body (1); and the display instrument box (2) comprises a controller, a display screen, a hydraulic pump station, a control valve bank, a circumferential rotation control circuit, a pressure-bearing block control loop and a stress numerical value acquisition and calculation loop. The attitude adjustable surrounding rock stress measurement device can realize the attitude adjustment of the stress gauge body in a drill hole, further realizes the effect of maximally reducing the measurement errors caused by drill hole deviation and axial deflection when a surrounding rock stress gauge is placed into the drill hole, achieves the precise measurement of surrounding rock stress, and is especially suitable for data acquisition and monitoring of coal mining stress.

The invention discloses a multi-mode coupling miniature electric field sensing device based on a piezoelectric effect and a piezoresistive effect. The miniature electric field sensing device comprisesa horizontally placed semiconductor thin film, a horizontally placed substrate is arranged under the semiconductor thin film, a cavity structure is formed between the semiconductor thin film and thesubstrate through support of a middle interlayer, an upper surface of the semiconductor thin film is evenly provided with a piezoresistive material, the piezoresistive material comprises a transverse-transverse mode piezoelectric film and a transverse-longitudinal mode piezoelectric block, and in a transverse-transverse mode, a top surface of the semiconductor thin film is provided with the piezoelectric film; and in a transverse-longitudinal mode, a bottom surface of the semiconductor thin film is provided with the piezoelectric block. The multi-mode coupling miniature electric field sensingdevice based on the piezoelectric effect and the piezoresistive effect, provided by the invention, has the beneficial effects of being small in volume and highly integrated, effectively reducing circuit temperature drift, reducing zero drift, improving measurement accuracy, being capable of realizing electric field accurate measurement under wide band, high field intensity and complex environment,and also being capable of being mounted and maintained in the case of being electrified.

The invention relates to a test paper for rapidly detecting uric acid in saliva. The test paper comprises a plastic card paper and a test paper block pasted to one end of the plastic card paper; and the test paper block is impregnated with an enzyme developer solution. The test paper is produced through pasting the test block impregnated with the enzyme developer solution to one end of the plasticcard paper. A production technology of the test paper has the advantages of simplicity, low cost, and facilitation of large-scale production. Additionally, the detection process realizes semi-quantitative detection of the concentration of uric acid based on the color development reaction principle of coupled endpoint colorimetry, the test paper ahs a good stability at 35 DEG C, is convenient fora patient to autonomously carry in order to monitor the uric acid, and is beneficial for the patient to timely find the disease condition and select optimum treatment timing. The test paper is also suitable for monitoring uric acid in urine.

A system for monitoring an environment in a precision casting room comprises a power supply module, a control module, a temperature detection module, a humidity detection module, an illumination detection module, a carbon dioxide concentration detection module, an ozone detection module, a clock module, a keyboard input module and an LCD display module, wherein the temperature detection module, the humidity detection module, the illumination detection module, the carbon dioxide concentration detection module, the ozone detection module, the clock module, the keyboard input module and the LCD display module are respectively connected with the control module; and the control module adopts an STC single chip microcomputer. The system of the invention is based on the STC12C5A60S2 single chip microcomputer and realizes functions of temperature and humidity detection, carbon dioxide concentration detection, indoor illumination detection, ozone detection and clock display; the system is convenient in use, simple in structure and applicable to environment detection in the precision casting room.

The invention provides a long-distance steel rail damage detector, belonging to the technical field of railway safety detection. The long-distance steel rail damage detector comprises a synchronous acoustic wave generating module, an acoustic wave receiving module and an ultrasonic analysis module, wherein the synchronous acoustic wave generating module comprises an ultrasonic transducer, an ultrasonic generator, a first single-chip microcomputer synchronous controller, an echo detection analyzer and a first wireless data transmitter, a synchronous control module comprises an acoustic emissionsensor, an amplifier, a second single-chip microcomputer synchronous controller and a second wireless data transmitter, and the ultrasonic analysis module comprises an acoustic emission capture card,an ultrasonic rail condition monitoring module, an acoustic emission rail condition monitoring module, a high-speed rail stress monitoring and stress change analysis module, a rail fracture/damage comprehensive analysis and early warning module and a display. The detector directly feeds ultrasonic energy into a steel rail by utilizing ultrasonic propagation characteristics on a solid surface, soas to analyze the running situations of a road segment, and timely report the situations of rail fracture and crack.

The invention relates to a moisture-proof performance detection machine and detection method for edge-sealed plate type furniture, and relates to the technical field of furniture performance tests. The moisture-proof performance detection machine comprises a furniture test piece, a master control platform, a host platform, a constant-temperature water bath box arranged on the host platform and a transferring assembly, and a negative-pressure clamping assembly is arranged on the outer side of the transferring assembly; the furniture test piece is clamped on the negative pressure clamping assembly, and the negative pressure clamping assembly is driven by the transferring assembly to stretch the furniture test piece into the constant-temperature water bath box to be soaked; and the detection machine further comprises an electronic weighing platform which is arranged on the host platform and electrically connected with the master control platform. Aiming at the conditions that the thicknesses of all positions of the special-shaped edge sealing plate type furniture are different and the to-be-detected point positions are not easy to determine, the volume expansion rate of the furniture test piece can be determined according to different volume values before and after soaking, the moisture resistance of the furniture test piece can be directly reflected, the moisture resistance can be used as a basis for judging the moisture resistance quality of the edge sealing plate type furniture, the detection is convenient and rapid, and the practicability is high.

The invention provides a multi-protocol centralized communication method for heterogeneous computer clusters. A unified computer cluster management network is constructed conveniently through an interface, the management network is independent of a hardware platform and a software operation system and has cross-platform and out-of-band characteristics, compared with traditional block multiplexer channel (BMC) management devices based on an intelligent platform management interface (IPMI) protocol, the management network transmits rich data types, the implementation cost is low, the method is suitable for a complex heterogeneous network environment, and monitoring and management of server clusters is performed.

The invention discloses a smart lighting monitoring terminal comprising a communication module, a meter, a processor and a relay. A command input end of the processor is connected to a background server through the communication module, a command output end of the processor is connected to a command signal input end of a street lamp to be tested through the relay, and a street lamp information input end of the processor is connected to the street lamp to be tested through the meter. The invention also discloses a smart lighting monitoring system including the background server and at least onesmart lighting monitoring terminal and a smart lighting monitoring method implemented by using the smart lighting monitoring terminal. Compared with a traditional manual monitoring mode, the monitoring mode of the invention is efficient, intelligent and accurate. The invention is applicable to smart lighting monitoring.