9 results about "Microheater" patented technology

Various embodiments disclosed herein provide for an improved method for sensing the temperature at an individual sensor location that is both small in size, and the temperature can be determined independent of the temperature of the Temperature Management Controller (TMC). The method includes determining the temperature at the temperature sensing element or circuit based on a function of two voltages measured at the temperature sensing element. In a first embodiment, the two voltages are measured at two transistors that are each being supplied with the same current. In another embodiment, the temperature sensing element includes a single transistor that is supplied with two different currents at different times, and the voltages are measured at the same current, with each of the two voltages being measured based on the two currents being supplied to the transistor.

Provided is a heat therapy system capable of controlling temperature which is used by being connected to a commercial power source and which, while reducing the risk of occurrence of a dangerous electric shock to a human body, can safely and reliably provide a therapeutic effect by heating a lesion with a thermal probe in which a microheater inserted inside is heated by energization. A thermal probe 10, which comprises a microheater 2 including a heater body 230 and a temperature detection element 240 accommodated in a hollow portion formed inside a heat transfer pipe 210 and which heats a lesion by puncturing, being inserted into, or pressed against the lesion, is detachably connected to a control device 20. In the control device, an isolated power source unit 30 converts a commercial power into a low-voltage DC power for driving the heater, and a heater power control unit 40 controls, on the basis of a temperature detection result obtained by the temperature detection element 240 arranged in the microheater 2, the DC power that is supplied to the microheater 2 provided in the thermal probe 10 so that the temperature becomes equal to or higher than a temperature at which protein of the lesion undergoes irreversible thermal denaturation, and equal to or lower than a temperature at which the lesion undergoes local boiling.

A sensor assembly for detecting a presence of an analyte includes a detector and a microheater. The detector includes an electrode layer including interdigitated electrodes and nanofibers that are formed of a fiber material exhibiting an electrical signal that changes based on exposure to the analyte. The microheater is coupled to the detector and includes a heating element that is capable of heating at least a portion of the detector to a temperature that reduces a quantity of water molecules in a region proximate the nanofibers.

This invention provides a temperature-controlled heating therapy system that connects to a commercial power supply, minimizing the risk of dangerous electric shock to the human body, and safely and reliably delivering therapeutic effects by heating the lesion with a thermal probe. [Solution] The control device 20 includes a microheater 2 in which a heater body 230 and a temperature detection element 240 are housed in an air core formed inside a heat transfer tube 210, and a thermal probe 10, which is detachably connected to the lesion to heat the lesion by puncturing, inserting, or pressing against the lesion, converts the commercial power supply into a low-voltage DC power supply for driving the heater using an isolated power supply unit 30, and controls the DC power supplied to the microheater equipped with the thermal probe using a heater power control unit 40, based on the temperature detection result of the temperature detection element arranged in the microheater, so that the temperature is above the temperature at which the proteins in the lesion irreversibly denature and below the temperature at which the lesion locally boils.

The invention provides a reflow soldering selective temperature control device and method based on neural network PID control, and relates to the technical field of selective temperature control, visual scanning monitoring of distribution of elements with different heat capacities is carried out on a PCB, temperature field data is acquired from visual scanning information, and real-time element size information of a preset key area is extracted; performing control quantity analysis, and outputting the control quantity of the independent temperature control module corresponding to the preset key area; carrying out selective temperature compensation analysis on a preset key area, carrying out selective temperature compensation control according to compensation analysis data, carrying out adjustment analysis on adjustment parameters of a micro heater, carrying out parameter adjustment control on the micro heater according to adjustment analysis data, and obtaining selective temperature control data; dynamic and accurate local temperature compensation can be realized for elements with different heat capacities on the same PCB, so that the temperature difference between the elements is remarkably reduced, and welding defects caused by different heat capacities of large and small elements are avoided.

This application belongs to the field of optoelectronics, specifically disclosing a stepped microheater for phase-change photonic devices and its fabrication method. The microheater includes a substrate, a phase-change material thin film, and at least three electrode layers. Except for the bottom electrode, the remaining electrodes are arranged in an open stepped pattern on both sides of the phase-change material thin film from bottom to top. A heating region is formed on the bottom electrode, and the phase-change material thin film is disposed above the heating region. The open stepped structure of the electrodes optimizes the current distribution on the electrodes when a driving signal is applied to the top electrode, causing the current density in the heating region to reach a peak value, thereby generating Joule heating in the heating region and achieving a change in the state of the phase-change material thin film. The stepped microheater for phase-change photonic devices provided in this application features high heating efficiency, low heat loss, and fast switching speed.

The invention provides a sample cavity positioning and adjusting device of magnetic measurement equipment, which relates to the technical field of dilution refrigerators and comprises a base ring, an adjusting ring and an in-situ monitoring and feedback control module. Intelligent active locking modules and adjusting jackscrews which are matched with the adjusting rings for use are mounted on the front side, the rear side, the left side and the right side of the inner bottom of the base ring; the intelligent active locking module comprises a memory alloy brake, a micro heater, a temperature sensor and a thrust block; the in-situ monitoring and feedback control module comprises a central processing unit and four optical ranging units, and the optical ranging units are used for monitoring the radial position and the inclination angle of the adjusting ring; and the central processing unit is electrically connected with the micro heater, the temperature sensor and the four optical ranging units. Precise positioning of the sample cavity in the whole process from the room temperature to the extremely low temperature is achieved, all freedom degrees can be locked rapidly and reliably, it is ensured that the position of the sample cavity is kept stable for a long time in the subsequent operation and system operation process, and the anti-interference capacity is high.

Disclosed is a sampled grating distributed Bragg reflector laser diode. The diode includes a lower clad layer including a gain region, and a first reflection region at one side of the gain region, a waveguide layer provided on the lower clad layer and including gratings in the first reflection region, an upper clad layer provided on the waveguide layer and including heating regions on the gratings and non-heating regions between the heating regions, and an upper electrode layer on the upper clad layer. The upper clad layer may include a first upper electrode on the upper clad layer in the gain region, and a first wavelength-tunable electrode including a first heater electrode on the upper clad layer in the first reflection region and first plate electrodes on the first heater electrode in the non-heating regions.