77results about How to "Realize temperature monitoring" patented technology

The invention discloses a cardiac intervention ablation catheter, the catheter comprises more than two branch electrodes (5), a catheter trunk (6) and an operating handle (7), wherein, all the branch electrodes (5) are distributed in a shape of petals, the top end of each petal of branch electrode (5) is a metal electrode (12), the lower ends of the metal electrodes are provided with a temperature sensor (11), the metal electrodes (12) are connected with an examination and treatment instrument (4) through a metal wire and the temperature sensor (11) which are welded at the lower ends of the metal electrodes and a connection line (15) of the sensor passes through an insulation tube (14), a catheter trunk (6) and a handle (7) sequentially. the root part of the catheter trunk (6) is provided with a depth scale (19) and an angle scale (20), the invention can realize that the invention can be tightly affixed at the surgical site of the rugged part in the heart; the invention can realize the ring-shaped ablation under the appropriate three to five times of the rotation of the catheter.

The invention discloses a distributed optical fiber temperature sensor which mainly comprises a machine casing and a pulse laser source, a wavelength division multiplexer and an optical switch which are arranged in the machine casing. The optical switch is further connected with an optical fiber box, a reference optical fiber ring is arranged in the optical fiber box, a temperature probe is further arranged on the optical fiber box, and the tail end of the optical fiber ring is connected with an external sensing optical fiber through an optical terminal arranged on the machine casing. The wavelength division multiplexer is further sequentially connected with a photoelectric detection module, a high speed collection card and an industrial personal computer board card. The sensor is low in cost, simple in structure, good in signal to noise ratio, good in stability, reliable and high in temperature resolution. A method for removing a nonlinear error of the distributed optical fiber temperature sensor by utilizing a subsection loss difference compensation method to remove the nonlinear error caused by Raman Stokes and anti-Strokes optical loss difference is further provided. By means of the method, a temperature curve demodulated by the system accords with the actual condition, and temperature measuring accuracy and reliability of the system are improved.

The invention discloses an IGBT junction temperature on-line monitoring method and a measuring circuit thereof. The method solves the problem that the existing IGBT junction temperature measurement method cannot realize junction temperature on-line monitoring under a high current condition. The method carries out on-line monitoring on the work state of the IGBT junction temperature through saturation voltage drop. According to the method provided by the invention, the shortcoming of the existing method is overcome; IGBT high voltage blocking is realized; high accuracy saturation pressure drop measurement is carried out; the measuring circuit provided by the invention can simultaneously monitor the temperature of two IGBTs and diode chips of upper and lower bridge arms in an inverter; and the measuring circuit can be easily integrated into the existing IGBT drive circuit to carry out over-temperature protection on an IGBT module.

An optical fiber grating temperature measuring device comprises a broadband light source, an optical fiber coupler, a tunable optical fiber filter, an optical fiber, an optical fiber grating sensor, an optical detection circuit module and a measurement control module, wherein the output of the optical fiber coupler can be divided into two ways, the two ways enter into two sensor optical fiber grating arrays connected in series through optical fibers, one of the sensor optical fiber grating array comprises a plurality of horizontally arranged optical fiber gratings, the other sensor optical fiber grating array comprises a plurality of vertically arranged optical fiber gratings, the horizontally arranged optical fiber gratings and the vertically arranged optical gratings are interlapped in space, so as to form a rasterized optical fiber grating. Through the adoption of the variable grating, real time temperature change of any lattice point in the area can be obtained, and through the parameter self-correcting comparison, and mean value, network node redundancy, reliability of the system is improved.

The invention relates to an alarming device and method for quick monitoring of power battery failure to provide monitoring and alarming of heat failure of battery units serially and parallelly connected in a power battery pack. The alarming device comprises a plurality of heat-sensitive resistors, two heat-sensitive resistor sampling lines, a direct-current power supply and a data acquisition board, the heat-sensitive resistors are directly or indirectly arranged on the serially and parallelly connected battery units respectively, the heat-sensitive resistors are serially connected in order to form a whole Wheatstone bridge, and the data acquisition board acquires a first voltage signal transmitted by the first heat-sensitive resistor sampling line and a second voltage signal transmitted by the second heat-sensitive resistor sampling line based on the principle of Wheatstone bridge, calculates a potential difference between the first voltage signal and the second voltage signal, compares and judges the potential difference and a voltage threshold, and outputs an alarm signal if the potential difference is larger than the voltage threshold. The alarm device is simple and ingenious in structure, low in cost and high in sensitivity, enables real-time monitoring of the temperature of the power battery pack and improves the safety and reliability of power battery pack heat management.

The invention discloses a submersible motor non-sensor temperature on-line monitoring device based on a DC injection concept and a monitoring method thereof, and relates to the technology of non-sensor thermometry. The invention aims to further solve the problem of real-time temperature monitoring of a submersible motor in a 2km-3km oilwell on the basis of a conventional submersible motor non-sensor temperature monitoring device. A sampling resistor is connected in series with a wire connecting a three-phase power source and a motor at one phase, the sampling resistor is connected in parallel with a sampling resistor voltage transformer and a field-effect transistor, and an current transformer is arranged at the phase of the wire connecting the three-phase power source and the motor; a control circuit controls the switch of the field-effect transistor through a field-effect transistor driver, values of stator phase current and sampling resistor voltage are collected instantaneously through the current transformer and the sampling resistor voltage transformer and transmitted back to the control circuit through a signal conditioning circuit, and the control circuit calculates direct component Ias.dc and Vsw.dc; and the motor stator temperature which is the monitoring temperature obtained eventually is calculated. The invention belongs to the non-sensor monitoring technology applied to submersible motor real-time temperature monitoring.

The invention provides a chest temperature abnormal zone positioning method and device, belonging to the human body temperature measurement technical field. The method comprises: identifying a characteristic part on a breast; predicting a temperatures interest region according to multipoint temperature sampling values on the breast collected by a temperature collection device; and based on the direction of the characteristic part, indicating a user to relocate the temperature collection device to the temperatures interest region. The technical scheme can realize the comprehensive monitoring of chest temperatures and the monitoring of interest points with least temperature sensors, and reduce the complexity and cost of temperature sensing equipment, as well as the complexity of a temperature signal post-treatment algorithm.

The invention discloses a high-voltage switch cabinet temperature monitoring system and method. The system comprises a current transformer CT arranged on a busbar in a switch cabinet, a first wirelesstemperature measurement sensor arranged on the busbar in the switch cabinet, an intelligent temperature measurement and dehumidification device arranged on the inner wall of the switch cabinet, an on-site monitoring host and a server. A second wireless temperature measuring sensor and a humidity sensor are arranged in the intelligent temperature measurement and dehumidification device; the humidity sensor detects the humidity in the switch cabinet and starts dehumidification when the humidity reaches a preset value; the current transformer CT uploads the detected current passing through the busbar, the first wireless temperature measurement sensor uploads the detected busbar temperature, and the second wireless temperature measurement sensor uploads the detected environment temperature inthe switch cabinet to the on-site monitoring host. The on-site monitoring host uploads the data to the server; and the server performs fault judgment. The temperature and the humidity in the switch cabinet can be monitored in real time, and the operation safety of electric power facilities is ensured.

The invention belongs to the field of material science and engineering, and discloses an online monitoring method and device for the whole forming-service process of a carbon fiber composite material.According to the monitoring method, the temperature change in the forming process of the carbon fiber composite material and the health state in the service process are monitored by utilizing the pyroelectric effect and the piezoelectric effect of the multifunctional material. The monitoring device comprises a multifunctional material which responds to temperature and strain and serves as a signal source generator, an external circuit which is connected with a lead negative electrode led out of the multifunctional material and a component surface positive electrode, and a processor. Accordingto the invention, real-time monitoring of temperature, stress and strain in the forming process and the service process of the carbon fiber composite material can be realized, so that monitoring of the whole forming-service process is realized, the influence of addition of various sensing monitoring systems on the performance of the component is reduced, and intelligent monitoring of the carbon fiber composite material component is realized.

The invention relates to the technical field of target bodies driven by accelerators, in particular to a high-power neutron generation target for driving an accelerator, which has an efficient cooling function and a temperature and beam spot monitoring function. The neutron generation target comprises a target material layer, a particle migration layer, a micro-channel substrate layer and a cover plate layer which are sequentially connected in an attached mode to form an integrated multi-layer structure target body, and a plurality of thermocouple assemblies are arranged on the target body. A plurality of rows of fins are machined on the surface of the micro-channel substrate layer, and a micro heat dissipation channel is formed between every two adjacent fins. According to the invention, the problem that the infrared imaging camera cannot work for a long time in a high-dose radiation environment around the target body is solved; the neutron generation target is cooled by using a micro heat dissipation channel structure, so that the shape of a proton beam spot can be predicted, and the temperature of the target material can be monitored; the uniformly distributed thermocouples are adopted, and the distances from the thermocouples to the surface of the target material are consistent, so that a uniformly measured temperature field is formed, and beam spot shape prediction is facilitated.

The invention relates to a local host temperature control system with guiding direction by temperature-measuring balls with built-in pyroelectric sensors. The local host temperature control system with guiding direction by the temperature-measuring balls with the built-in pyroelectric sensors comprises a granary. A plurality of air pipes are arranged at the bottom of the granary. The side wall of each air pipe is provided with a plurality of branch pipes leading into the granary. The air pipes are connected with a fan. A fixed side plate is arranged on the side face of the granary. A continuous guide groove is formed in the fixed side plate. A gear driven by a motor is arranged in the guiding groove. The side face of the gear is connected with a monitoring rod extending into the granary. The temperature-measuring balls are arranged on the monitoring rod. The pyroelectric sensors are arranged in the temperature-measuring balls. After the temperature-measuring balls form a group, the pyroelectric sensors form a group and are connected with a control unit. The local host temperature control system with guiding direction by the temperature-measuring balls with the built-in pyroelectric sensors has the advantages that through guiding movement of the motor and the guiding groove, the temperature-measuring balls monitor the temperature of the granary, the detection range is wide, and the detection precision is high; the fan is started by the pyroelectric sensors and a local host to work, control is reliable, and labor intensity is low.

The invention discloses an optical fiber temperature sensor based on fluorescence intensity detection. The optical fiber temperature sensor comprises an optical fiber pump light source, a single-mode optical fiber, an optical fiber coupler, a photoelectric detector and a special doped optical fiber, wherein the pump light source is used for generating exciting light and transmitting emitted pump laser to the special doped optical fiber end through the optical fiber coupler and the single-mode optical fiber; the special optical fiber is used as a sensing end and generates a fluorescence signal with a longer wave band under the excitation of the pumping laser; and the fluorescence signal can be directly received by the photoelectric detector along the transmission direction, can also be transmitted along the reverse direction, and is received by the photoelectric detector through the single-mode optical fiber and the optical fiber coupler, so that the intensity detection of the fluorescence signal is realized. The stimulated radiation light intensity of the special optical fiber is weakened along with the rise of the environment temperature, and the manufacturing of the optical fiber temperature sensor is realized based on the principle. The device can realize high temperature measurement, is fast in system temperature response, and has a wide application prospect in the fields of transient temperature detection in an explosion environment, extreme environment temperature monitoring in fire engineering and the like.

The invention discloses a dam long-term wireless temperature measurement system, which comprises a long-term temperature measurement hardware system, a data real-time acquisition, transmission and processing cloud platform system and a real-time query and analysis mobile and desktop interaction interface, and is characterized in that the long-term temperature measurement hardware system comprisesa concrete temperature sensor and a long-term temperature measurement cabinet, the concrete temperature sensor is arranged in a concrete bin, and a multi-channel wireless temperature measuring instrument is arranged in the long-term temperature measuring cabinet; the long-term temperature measuring cabinet is used for wirelessly transmitting temperature data acquired by the concrete temperature sensor to the data real-time acquisition, transmission and processing cloud platform system, and the data real-time acquisition, transmission and processing cloud platform system is used for acquiring,transmitting and processing the temperature data acquired by the concrete temperature sensor in real time, and wirelessly transmitting temperature data and processing results acquired by the concretetemperature sensor to the real-time query and analysis mobile and desktop interaction interface for display.

The invention relates to a reaction tower for ammonia synthesis. Main components comprise an outer cylinder, a top cover, a tower top flange, a bottom cover, a tower bottom assembly, an inner cylinder, a catalyst basket, a casing pipe mechanism, a heat exchanger, heat exchange pipes, a circulation pipe, a product output pipe and a filter membrane. The upper end of the outer cylinder is connected to the top cover. The upper end of the top cover is connected to the tower top flange. The top cover is provided with a raw material inlet. The lower end of the outer cylinder is connected to the bottom cover. The lower end of the bottom cover is connected to the tower bottom assembly. The outer cylinder wraps the inner cylinder. The upper part of the inner cylinder is provided with the catalyst basket. The casing pipe mechanism is arranged at the lower end of the catalyst basket. The heat exchanger is arranged at the lower end of the inner cylinder. The heat exchanger is provided with the heatexchange pipes spirally and inclinedly distributed, the heat exchanger is provided with a circulation pipe, a product output pipe is arranged at the lower end of the heat exchanger and the filter membrane is arranged in the product output pipe. The reaction tower has the advantages of high ammonia synthesis conversion rate, compact structure, small floor space, neat internal structure, convenientmaintenance, energy saving, high ammonia separation efficiency and high ammonia quality.

The invention belongs to the field of fire coal management, and discloses a power plant coal yard temperature monitoring system and method based on an unmanned aerial vehicle. The system comprises a ground station system, an unmanned aerial vehicle system, an environment data collection system, and a data processing system. The unmanned aerial vehicle system comprises an unmanned aerial vehicle, a positioning system, an infrared thermometer and a camera; the ground station system obtains a preset flight route of the unmanned aerial vehicle; the control system of the unmanned aerial vehicle controls the unmanned aerial vehicle to fly according to a preset flight route of the unmanned aerial vehicle; the positioning system obtains real-time position information of the unmanned aerial vehicle; the infrared thermometer collects surface temperature information of the power plant coal yard; the camera collects image information of a power plant coal yard; the environment data collection system collects environment data of a power plant coal yard; and the data processing system obtains coal pile temperature distribution data of the coal pile power plant coal yard according to the image information of the power plant coal yard, the surface temperature information of the power plant coal yard and the environment data of the power plant coal yard. Compared with the prior art, manpower is greatly saved, and real-time monitoring of the temperature of the coal yard is achieved.

The invention relates to a temperature measuring ball thermistor control system based on guiding monitoring. The temperature measuring ball thermistor control system comprises a barn. A plurality of air pipes are arranged at the bottom of the barn. The side walls of the air pipes are provided with a plurality of branched pipes respectively led to the interior of the barn. The air pipes are connected with draught fans respectively. The side faces of the barn are provided with fixing side plates. The fixing side plates are provided with continuous guiding grooves. The guiding grooves are internally provided with gears driven by a motor. The side faces of the gears are connected with monitoring rods stretching into the barn. The monitoring rods are provided with a plurality of temperature measuring balls. Each temperature measuring ball is internally provided with a thermistor. The thermistors are connected with the draught fans through a control unit. The front side of the barn is provided with an LED display screen electrically connected with the temperature measuring balls. The temperature measuring ball thermistor control system has the advantages that by means of guiding moving of the motor and the guiding grooves, the temperature measuring balls monitor the temperature in the barn, the detecting range is wide, and the precision is high; the thermistors and the control unit automatically start the draught fans to work, control is reliable, and labor intensity is low.

The invention discloses a fireproof electric water heater and a control method. The fireproof electric water heater comprises an arc detection device and a control module, wherein the arc detection device is used for detecting a fire arc signal in the electric water heater, the arc detection device is connected with the control module of the electric water heater, when the control module receives the fire arc signal sent out by the arc detection device, a relay of the electric water heater is powered off. According to the fireproof electric water heater, the problem that the electric water heater cannot prevent a fire of the water heater in advance is solved, the fireproof water heater conducts analysis and treatment by detecting the arc signal of the electric water heater, when a fire arc signal having the fire capability is judged, the relay of the electric water heater is immediately disconnected, therefore the effect of early prevention is achieved, and the use safety of the electric water heater is improved.

The invention belongs to the technical field of automobile exhaust emission, and particularly relates to an anti-blocking structure of a three-way catalytic converter, which comprises a shell and a ceramic carrier;. the shell comprises a metal shell; a heat insulation interlayer is arranged on the inner side wall of the metal shell; an anti-corrosion coating is arranged on the inner side wall of the heat insulation interlayer; air inlet is arranged at the left side of the shell; a front pressure sensor and a front temperature sensor are arranged at the top and the bottom of the air inlet respectively; an exhaust port is arranged at the right side of the shell; a rear pressure sensor and a rear temperature sensor are arranged at the top and the bottom of the exhaust port respectively; an air flow rate sensor is arranged on the front surface of the exhaust port; a vibration motor is arranged on the front surface of the shell; and a transmission rod is arranged on the side wall of an inner cavity of the shell. The structure is reasonable, in the using process, the air inlet temperature and pressure and the exhaust temperature and pressure can be conveniently monitored, meanwhile, the air flow speed of the exhaust port can be detected, and blocking is prevented.

The invention provides an energy storage device hot spot temperature determination method based on a digital twinborn technology, and aims to solve the problems of heat storage fluid gasification, heating column damage and the like caused by overhigh temperature of a heat storage pool along with continuous expansion of new energy power generation installed capacity in China, and the problem that the hot spot temperature cannot be directly measured. A heat storage device temperature field numerical analysis model is established based on the finite element analysis technology, a fluid field and a temperature field in a heat storage pool are calculated and analyzed, the temperature of the wall face of the heat storage device is collected through optical fiber temperature measurement, and the hot spot temperature in the heat storage pool is calculated based on the digital twinning technology. The temperature of the heat storage device can be monitored in real time, the problem that the temperature of the energy storage device cannot be measured through a measuring instrument is solved, the hot spot temperature is speculated through the temperature of the low-temperature area of the wall face by means of the digital twin technology, and temperature monitoring of the energy storage device is achieved.

The invention belongs to the technical field of thermodetectors, and particularly relates to a transformer substation thermodetector. The thermodetector comprises a base plate, an electric lifting rodand an electric box are arranged on the base plate, a horizontal adjusting mechanism is arranged at the top end of the electric lifting rod, an elevation angle adjusting mechanism is arranged on thetop of the horizontal adjusting mechanism and a thermal imaging temperature measuring camera is arranged at the top of the elevation angle adjusting mechanism; the horizontal adjusting mechanism comprises a connecting base and a first driving motor, the connecting base is connected with a supporting column, the supporting column is rotatably connected with a connecting top seat, the connecting topseat is connected with a fluted disc, the top surface of the fluted disc is connected with a rotating top plate, and the first driving motor is connected with a first driving gear through a first driving shaft; and the elevation angle adjusting mechanism comprises an outer vertical plate and a second driving motor, the inner side of the outer vertical plate is rotatably connected with an inner vertical plate, the top end of the inner vertical plate is connected with a supporting top plate, and the second driving motor is connected with a second driving gear through a second driving shaft. Thethermodetector is convenient to operate and use, is convenient and quick to install, and can achieve the real-time temperature monitoring of electrical equipment in a transformer substation.

The invention provides a connection terminal box. The connection terminal box comprises a box body, a conductive board, a control circuit board and a temperature sensor, wherein the conductive board is partially accommodated in the box body, the control circuit board is located in the box body, the temperature sensor is disposed on the control circuit board and is located between the control circuit board and the conductive board, the temperature sensor is suitable for monitoring the temperature of the conductive board, the control circuit board is configured to receive the temperature of theconductive board and judge whether the temperature of the conductive board is greater than a set temperature threshold, and is also configured to send a disconnection signal when the temperature of the conductive board is greater than the temperature threshold. By disposing the temperature sensor between the control circuit board and the conductive board, the connection terminal box provided by the invention can monitor the temperature of the conductive board more conveniently to master the temperature change situation in real time, so that the connection or disconnection of an electrical signal in the connection terminal box can be effectively controlled, and it is conducive to improving the use safety of the connection terminal box.

A method for bonding the chips made of different materials by use of sealed quartz glass tube includes such steps as cleaning said chips, treating their surfaces, providing fixture used for binding, arranging piezoelectric ceramic at the bottom of fixture for measuring the binding pressure, fixing the chips in the fixture, putting them in high-purity quartz glass tube, vacuumizing it, sealing it by oxyhydrogen flame, arranging the NiCr-NiSi thermoelectric couple at the fixture position in liquid-phase epitaxial furnace for monitoring the binding temp, loading the fixture and chips in the liquid-phase epitaxial furnace, and heating at 300-800 deg.C for 10 min-24 hr.