74 results about "Joint temperature" patented technology

Joint temperature monitoring and control systems and methods are described herein in which the temperature of a fluid within a body or joint space is determined and / or monitored despite the energy generated during treatment by an ablation probe. One or more temperature sensors are positioned along the probe proximally of the electrode assembly and measure the temperature of an electrically conductive fluid without being overly influenced by the surgical effect occurring proximate the electrode assembly. The controller coupled to the probe can also be configured to set temperature limits and treatment times as well as moderating joint temperature by altering the electrically conductive fluid flow.

The invention discloses a power cable intermediate joint temperature calculating method, and belongs to the technical field of cable monitoring. The method comprises the following steps: A, consulting an IEC60287 standard, obtaining correlation parameters needed for calculating the current-carrying capacity of a cable, a current-carrying capacity load current value I3 of the load, a body skin temperature measuring value theta 2' of the cable, and an ambient temperature theta 0; B, obtaining a correction coefficient k, and obtaining a correction formula; C, according to correlation parameters, introducing the I3 into the correction formula, and inversely calculating a conductor temperature rise delta theta higher than the ambient temperature; D, according to the theta 2' and the delta theta, solving a body conductor temperature theta1' of the cable; and E, according to the ambient temperature theta 0 and the body conductor temperature theta 1', solving a joint skin temperature theta 2 and a joint conductor temperature theta 1 by use of a joint temperature calculation formula. According to the invention, the correction coefficient k is introduced so that the precision of calculating the current-carrying capacity of the cable by means of the IEC 60287 standard is improved. The intermediate joint temperature calculation method is also brought forward, and the method can accurately calculate the joint conductor temperature and the joint skin temperature, facilitates real-time monitoring of the intermediate joint and well supplements the IEC 60287 standard.

A machine for determining the location of junction tubes along a header and automatically brazing them to the header. A chassis is employed to hold the junction tubes and header in the proper orientation. A carriage then travels along a line which is parallel to the central axis of the header. The carriage includes a sensor which is able to determine the exact position of the junction tubes. This positional information is stored in a controller. The carriage also includes a reciprocating pair of burners for heating the joint to be brazed. A pair of brazing wire feeders are included for feeding the brazing alloy alloy to the joint. A pyrometer is also included for measuring the temperature of the joint during the brazing process. In operation, the carriage slides along with the sensor measuring the position of each joint to be brazed. The burners and brazing alloy feeders are located in such a position on the carriage that the sensor precedes them in coming to each joint location. Thus, the joint location is determined, then the carriage is moved to bring the burners in contact with the joint. Once in position, the burners are moved through a reciprocating motion to evenly heat the joint. A pyrometer is used to monitor the joint temperature (through the operation of the controller). When the appropriate temperature is reached, the controller causes the brazing wire feeders to feed the appropriate amount of brazing alloy to the joint—thereby brazing the joint. The carriage then moves on to the next joint position. The process is repeated until every joint on the header has been brazed.

The present invention relates to a wireless and passive power cable joint temperature monitoring system. The wireless and passive power cable joint temperature monitoring system is characterized in that a temperature collector is communicated with a SAW temperature sensor in a wireless communication manner and is connected with a bus communication management machine, the communication management machine is connected with a monitoring management machine via a bus, and the monitoring management machine is connected with an external monitoring center via a system communication interface. The wireless and passive power cable joint temperature monitoring system can realize the real-time on-line temperature measurement, provides the electric energy with the help of a power grid, is longer in service life, and guarantees the system and device safety and reliability better.

The invention discloses a built-in cable joint temperature fiber on-line monitoring sensor, and the sensor comprises a quartz rod or a quartz optical fiber, a fluorescent material which is pasted at the front end of the quartz rod or the quartz optical fiber and is closely attached to a tested cable joint metal nut, a teflon casing pipe and an insulating ceramic tube which are disposed at the exterior of the quartz rod or the quartz optical fiber from the inside to the outside, a plastic optical fiber with a plastic clamping sleeve, an optical processing module connected with the other end of the plastic optical fiber, and a 485 output end disposed at the other end of the optical processing module, wherein the plastic optical fiber with the plastic clamping sleeve is closely attached to an end face of the quartz rod or the quartz optical fiber through a nut. The exterior of the insulating ceramic tube and a metal nut is provided with an epoxy resin layer which is formed through high-temperature and high-pressure casting. The sensor is low in cost and is simple in installation process. When the sensor is in use, the fluorescent material can directly measure the contact temperature, and can improve the temperature measurement accuracy and precision of a cable joint.

The invention discloses an intelligent plant growth experiment device which comprises a first growing room, a second growing room, a water-cooled type LED area light source, a control system, a cover plate, a public air adjusting room and a CO2 fertilizer applying device, a compressor, a fertilizer bucket, a water tank and the like. The experiment device is cooled by the compressor and heated by a PTC, recycles the heat generated by an LED light source and controls the joint temperature control module of the public air adjusting room. The temperatures of the two growing rooms are adjusted and controlled by controlling the temperature of an air supply room of the public air adjusting room and the flow and rotating speed of draught fans of the growing rooms, and the independent management of the temperatures of the growing rooms can be achieved. The invention further discloses a temperature adjusting and controlling method of the intelligent plant growth experiment device. The intelligent plant growth experiment device is reasonable in design and convenient to use, and the temperature adjustment and control of the device are effectively achieved.

The invention brings forward a high-voltage cable joint state detection method. The method comprises the following steps: acquiring a cable joint temperature, a cable current and an environment temperature; respectively establishing membership functions; converting the environment temperature, the cable joint temperature and the cable current into fuzzy values respectively according to the membership functions; determining fuzzy subclasses which the fuzzy values of the environment temperature, the cable joint temperature and the cable current belong to in corresponding domain spaces; and establishing fuzzy inference rules so as to determine cable joint states and generation factors for the over-high cable joint temperature. According to the detection method provided by the embodiment of the invention, whether cable joints are abnormal and reasons why problems occur can be accurately and reliably analyzed, and alarms can be given timely, such that risks caused by abnormities of the cable joints can be avoided, and life and property safety of passengers are guaranteed. The invention also brings forward an automobile high-voltage cable joint state detection system.