1391 results about "Thermal resistor" patented technology

A vaporizer device for vaporizing substances is provided, containing active and / or aroma materials, including a mouthpiece with a fluid inlet and a fluid outlet, and including: a heating device with a thermal resistor being a metallic foil or a thin sheet configured as a dual coil and / or sinuous line with two ends and dimensions of the cross-section of a cigarette or a small cigar, wherein the interspaces of the dual coil and / or sinuous line allow fluid flow therethrough, contact tabs are connected to respective opposed ends of the dual coil and / or sinuous line and are not in direct contact with one another, and at least one permeable and wettable vaporizer membrane in large-area contact with the thermal resistor, wherein the thermal resistor and the at least one vaporizer membrane are arranged orthogonally or at an angle to the direction of the fluids passing through the mouthpiece.

Provided is a flexible and conformal wearable, self-contained medical device. The medical device comprises an integral housing formed by a flexible upper portion and a flexible lower portion joined along their perimeters. The medical device is also provided in a plurality of shapes and configurations for increasing the flexibility and conformability of the housing. The components contained within the housing, such as a drug reservoir, printed circuit board, and power supply are preferably constructed from flexible materials and are formed, connected and positioned according to the configuration of the housing in a manner for enhancing flexibility of the housing. A thermal bubble micropump is provided for controlling flow of a drug from the flexible reservoir, that utilizes a thermal resistor provided locally to a thermal expansion fluid that causes a surrounding membrane to expand and displace a volume of drug to be provided to the user.

A method for treatment or prevention of a disease or disorder of an eye comprises (a) charging a dispenser with a suitable liquid medicament, (b) disposing the dispenser in operative juxtaposition with the eye, and (c) actuating the dispenser to release a therapeutically effective amount of the medicament into the eye. The dispenser comprises an electrically energizable droplet generating device, such as a thermal resistor bubble jet device, together with means for electrically energizing and means for actuating the device. The device, when actuated, is adapted to issue droplets of the liquid medicament at a rate of about 1 to about 300 μl s−1 whereby a therapeutically effective amount of not more than about 50 μl of the medicament is released into the eye in not more than about 1 second. The dispenser further comprises a standoff configured to engage a facial surface proximal to the eye, thereby placing the dispenser in operative juxtaposition with the eye.

The invention relates to an integrated silicon chip for testing acceleration, pressure and temperature, and the manufacturing method thereof. The invention is characterized in manufacturing the pressure sensor, temperature sensor and accelerometers of thermoelectric pile on to one chip by the same micro processing technology. The acceleration is detected by adopting thermal convection type accelerometers, using polysilicon resistor as heater, using a thermoelectric pile composed of two pairs of metals (such as aluminium and tungsten-titanium) and P type or N type polysilicon to detect the temperature difference in the sealed cavity caused by acceleration. The high accurate absolute pressure sensor is manufactured by using silicon nitride film with low stress as the core structure layer of the pressure sensor chip, and forming force sensitive resistor track by polysilicon film, forming vacuum reference cavity by TEOS bolt in LPCVD furnace. At the same time, the temperature sensor is composed by using polysilicon thermistor to detect temperature change. The integrated chip achieves the advantages of microminiaturization, low cost, high precision, high reliability and high stability.

The invention provides a refrigeration-type coaxial packaging light-emitting tube core, which comprises a transistor outline (TO) tube shell, a refrigerator, a heat sink, a laser carrier and a sealing tube cap, wherein the TO tube shell comprises a tube shell base. At least seven pins are arranged around the tube shell base; the pins comprise a radio frequency (RF) signal pin, and the laser carrier with a microstrip line is arranged on the RF signal pin; the radiating surface of the refrigerator and the surface of the tube shell base are fixed in the manner of sticking; the refrigeration surface of the refrigerator and the surface of the heat sink are fixed in the manner of sticking; the heat sink and the surface of the laser carrier with a matched resistor and the microstrip line are fixed in the manner of sticking; an electric absorption modulation laser chip, a backlight detector, a thermistor and a power filter capacitor are fixedly arranged on the surface of the laser carrier in the manner of sticking; one end of the microstrip line of the laser carrier is connected with the anode of an electric absorption modulator; and the other end of the microstrip line of the laser carrier is connected with a microstrip line on the RF signal pin through a conductor wire. When installation is performed, the emitted light outlet optical axis of the laser chip and the optical axis (OA) of the central axis of the TO tube shell are coaxial. Optical steering elements are not needed, the process is simple, and the signal distortion can be reduced.

The protection circuit unit 52 is an integrated body comprising a surface-mount type PTC thermistor 49 mounted by a soldering on a printed circuit board 44 through reflow soldering or the like soldering method together with a protection IC 45 and a FET unit 46. The surface-mount type PTC thermistor 49, as compared with a PTC thermistor with leads, can be mounted readily on the printed circuit board 44, without requiring bending and welding work of a lead to be connected to a negative terminal of prismatic battery cell 41, for forming a circuit. As a result, change in a resistance due to a bending stress, a thermal stress, etc. can be eliminated. Furthermore, a degree of thermal coupling with the battery cell 41 can be adjusted by changing a location of the thermistor 49. Thus, varieties of control functions can be implemented.

A vaporizer device for vaporizing substances is provided, containing active and / or aroma materials, including a mouthpiece with a fluid inlet and a fluid outlet, and including: a heating device with a thermal resistor being a metallic foil or a thin sheet configured as a dual coil and / or sinuous line with two ends and dimensions of the cross-section of a cigarette or a small cigar, wherein the interspaces of the dual coil and / or sinuous line allow fluid flow therethrough, contact tabs are connected to respective opposed ends of the dual coil and / or sinuous line and are not in direct contact with one another, and at least one permeable and wettable vaporizer membrane in large-area contact with the thermal resistor, wherein the thermal resistor and the at least one vaporizer membrane are arranged orthogonally or at an angle to the direction of the fluids passing through the mouthpiece.

A cordless electrical appliance has thermal sensing means in the appliance part and an electronic control in the base part. Two thermistors are shown for the thermal sensing means to monitor for liquid temperature during normal operation and also for dry switch-on. Also disclosed is a multi-pole 360-degree cordless connector providing two extra poles which can allow electrical connection to be made to the thermal sensing means.

A mobile communication terminals RF performance adaptive temperature compensation device, including RF modules, analog baseband modules, digital baseband modules, as well as temperature detection module; temperature detection module contains DC Power Supply, the precision series resistor and thermistor, also includes and with the stated thermistor the elimination of the voltage ripple module; a mobile communication terminals RF performance adaptive temperature compensation method, the temperature will be calculated DAC value and the temperature compensation terminal comparison table, calculated on the RF transmitter power and receiver gain compensation value and realize the RF parameters of temperature compensation. This invention using thermistor, high-precision resistors with terminal software-controlled methods, the environmental temperature can be achieved automatically detect, judgment, and in accordance with the terminal RF performance parameters expected accurate target compensation to enable terminals to meet the national standard of technical indicator.

An improved fluid flow sensor for measuring changes in temperatures of fluids flowing through apertures of a multiple-layered gasket is embedded between layers of the gasket. A thermal resistor type of sensor based upon hotwire anemometer technology in a preferred embodiment is responsive to changes in fluid temperature and flow velocity. A primary resistance with external current leads and separate auxiliary leads for voltage sensing are employed, wherein changes in resistance are virtually linearly proportional to changes in temperature. A four-point probe measurement method provides a most accurate reading of the temperature data to the extent that resistance associated with lead and contact resistances are minimized. The thermal resistor sensor is constructed of relatively thin layers of dielectric and electrically conducting materials having a low thermal mass, wherein the dielectric layers serve as support and electrical insulation to protect the sensor from environmental deterioration.

The invention discloses an integrating method of a hybrid integrated circuit with controllable working temperature. The method comprises the steps of integrating a common hybrid integrated circuit on the right side of a frontal base aluminium nitride ceramics substrate, integrating a semiconductor freezer on the back of the frontal base aluminium nitride ceramics substrate, respectively leading out connecting lines from two ends of a N type semiconductor and a P type semiconductor, bonding, and connecting the whole circuit. A thermal resistor, which is clinging to a temperature-sensitive semiconductor core, is provided in the device for detecting the inner working temperature of device. An exterior controllable switch circuit and the current direction are controlled by tracking the change of the resistor to check the change of the voltage at two ends of the resistor and to control temperature by controlling the frequency of increasing or decreasing temperature. The integrated circuit of the invention is widely applied to the fields such as space flight, aviation, ship, precise instrument, geological exploration, oil exploration, communication, industrial control, etc. The invention has an expansive market prospect.

The invention discloses an experimental device for evaluating a hydrate inhibitor, which is characterized by comprising an air bottle (1), high-pressure stainless steel reaction kettles, a data acquisition instrument (23) and a computer (24), wherein the air bottle (1) is connected with more than two high-pressure stainless steel reaction kettles through pipelines; the high-pressure stainless steel reaction kettles (11) are provided with thermal resistors (18) and pressure transmitters (19); the thermal resistors (18) and the pressure transmitters (19) are connected to an input end of the data acquisition instrument (23); and the data acquisition instrument (23) is connected to the computer (24). The device can achieve that all the high-pressure stainless steel reaction kettles react simultaneously at the same pressure and at the same temperature, and the data acquisition instrument records the pressure and temperature changes in the reaction process so as to judge the generation time of a hydrate. The device can quickly screen the inhibitor and determine the optimal dosage of the inhibitor, and has the advantages of speediness, high efficiency and economization.

Provided is an intelligent sensor for measuring high current. A large-power sampling resistor (R1) of the intelligent sensor converts current signals into voltage signals. Converted voltage signals are processed and filtered through a signal processing filter circuit and fed to an AD chip (U9). A negative temperature coefficient (NTC) thermal resistor (R23) is adopted by a temperature measurement module to measure the temperature of the large-power sampling resistor so as to be used for temperature compensation for the large-power sampling resistor. The AD chip converts output voltage of the measuring signal processing filter circuit and the temperature value of the NTC thermal resistor into digital signals, digital filtering processing is performed, and digital signals of voltage and the temperature are sent to an external main central processing unit (CPU) through a serial peripheral interface (SPI) communication interface isolated through an optocoupler. Isolation of the SPI communication digital signals is achieved through a digital isolation and direct current (DC) / DC conversion module, and the digital isolation and DC / DC conversion module supplies power to the signal processing filter circuit, the temperature measurement module and an analog to digital (A / D) conversion chip with a CPU processor. The main CPU and a controller area network (CAN) communication module receive external instructions and send digital signals of current measurement values.

The invention relates to the field of electric vehicle connectors, and in particular relates to a novel electric vehicle connector plug with a convertible contact pin. The electric vehicle connector plug comprises a power supply plug and a changeover plug, wherein the power supply plug is provided with a power supply contact pin, the power supply contact pin is connected with a power supply cable; the changeover plug is detachably connected with the power supply plug, and the changeover plug is provided with a jack connected with the power supply contact pin, and a connecting contact pin electrically connected with the jack, and the connecting contact pin is used for inserting in the plug. The electric vehicle connector plug further comprises a current detector electrically connected with the changeover plug, a temperature detector electrically connected with the changeover plug, wherein the the current detector is a current detection resistor and can be used for detecting the current system of the access current; and the temperature detector is a thermosensitive resistor and can be used for detecting the temperature of the changeover plug. The electric vehicle connector plug has the beneficial effects that the changeover plug is added to detachably connect with the power supply plug, a user can select the appropriate changeover plug according to the local power utilization system, thereby improving the applicability of the charging connector.

The invention discloses a quickly charging device and a method of nickel-hydrogen battery. The device comprises a switch circuit, an adapter, a thermistancce clinging to the surface of the battery, a switch control circuit which is arranged in a micro-processor and connected with the connected digital analog conversion module and the switch circuit. When in charging, the voltage value of the battery is compared with the preset voltage boundary value; if the voltage of the battery is smaller than the voltage boundary value, the switch circuit is controlled to switch to constant voltage mode for quickly charging up the battery; if not, the switch circuit is controlled to switch impulse mode to conduct supplementary charging. When in quick charging, the battery temperature is compared with the preset temperature boundary value; if the battery temperature is higher than the preset temperature boundary value, supplementary charging is conducted; if the battery temperature is lower than the temperature boundary value, quick charging is conducted. The invention overcomes the occurrence of debounce voltage in measuring voltage at low cost, enhances the precision of the measure voltage value of the battery, and improves the control sensitivity.

A device for directly measuring a person's respiratory exchange ratio (RER) utilizes a Zn-air battery cell and a constant current load circuit as an O2 pump capable of drawing oxygen from expired air. A thermistor located in the flow path forms a leg of a bridge circuit whose output is proportional to oxygen concentration in the expired air and, therefore, to oxygen uptake. The thermistor flowmeter circuit utilizes the thermal conductivity differences between O2 and CO2 to provide a measure at the relative ratio of the two gases present.

A temperature to digital converter circuitry to generate output data which is representative of one or more temperature dependent characteristics of a temperature sensitive device (for example, MEMS thermistor having a resistance that correlates to its temperature), the temperature to digital circuitry comprising a switched capacitor network to generate a effective reference resistance in response to a switching signal, a signal generator to generate the switching signal, wherein the switching signal has a switching frequency which is controlled, at least in part, via control data, comparator circuitry to generate error data using the effective reference resistance and the resistance of the temperature sensitive device, and converter circuitry to generate the output data which is representative of one or more temperature dependent characteristics of the temperature sensitive device.

In a thin film thermistor with a cutting portion of a metallic pattern for resistance adjustment, initially, the resistance is roughly adjusted by adjusting the film thickness of a second heat-sensitive film, and secondly finely adjusted by trimming the cutting portion by laser irradiation. Thus, the thin film thermistor with a resistance adjusted accurately can be produced.

The invention discloses an MEMS Fabry-Perot cavity tunable filter. The MEMS Fabry-Perot cavity tunable filter is characterized by comprising a thermal-insulation external box (1), a sealed internal box (2), thermal-insulation materials (3) filled between the thermal-insulation external box (1) and the sealed internal box (2), damping materials (4) surrounding the sealed internal box (2), a metal fixed base (5) fixed on the undersurface of the sealed internal box (2), an incidence end double optical fiber contact pin (6), an incidence end collimating lens (7), a first heating power resistor (8), an MEMS Fabry-Perot cavity chip (9), a second heating power resistor (11), an outgoing end collimating lens (12), an outgoing end double optical fiber base pin (13) and a thermal resistor (10), wherein the incidence end double optical fiber base pin (6), the incidence end collimating lens (7), the first heating power resistor (8), the MEMS Fabry-Perot cavity chip (9), the second heating power resistor (11), the outgoing end collimating lens (12) and the outgoing end double optical fiber base pin (13) are fixed on the metal fixedseat (5), and the thermal resistor (10) is fixed on the MEMS Fabry-Perot cavity chip (9). The MEMS Fabry-Perot cavity tunable filter has the advantages of being small in size, fast in tuning, continuously-adjustable, high in fineness, narrow in bandwidth, wide in free spectral domain and tuning range, good in thermal stability, low in cost and the like.

A press-bonding apparatus includes a backup member which supports a display panel, a heater tool which presses a wiring board, which is aligned at a predetermined position on the display panel via an adhesive member, toward the display panel between the heater tool and the backup member, and press-bonds the wiring board to the display panel, and a thermal resistor which is interposed between the backup member and the display panel.

The invention provides a method for establishing a temperature field model of a steel box beam bridge road system under high-temperature asphalt concrete paving. The model comprises a paving layer (1), a steel bridge panel (2), U-shaped ribs (4) and diaphragm plates (5). An interface thermal resistor (3) is arranged between the paving layer (1) and the steel bridge panel (2) and is used for reflecting a barrier effect of an adhesive layer in an adhesive layer-paving composite structure on temperature transfer. The method comprises the following steps: acquiring the optimal interface thermal resistance by using a test-numerical simulation mixed parameter analysis method and combining a numerical optimization technology; establishing an actual bridge numerical model, setting a movable temperature load (6) to simulate the paving construction process, and calculating and analyzing the temperature field distribution condition of the steel box beam bridge road system. The method mainly depends on finite element modeling, a thermal insulation effect of the adhesive layer can be well reflected, and the paving construction process can be really simulated. Compared with field measurement, the method is simple and feasible, different working conditions can be simulated, and the temperature field distribution condition of the steel box beam bridge road system can be accurately reflected.

A thermal power measurement device is characterized in that the device comprises a calorimetry cylinder, a constant-temperature and heat-insulation system, a temperature equalization system, a calibration system, a signal processing and controlling system and a box body, wherein the calorimetry cylinder is a three-layer embedded composite structure; the inner-most layer is a sample chamber, the middle layer is semiconductor thermoelectric modules that are connected in series and the external wall is a constant-temperature layer; the sample chamber is internally provided with a thermocouple and a thermal resistor; the semiconductor thermoelectric modules are fixedly arranged between the sample chamber and the external wall by a mechanical method; the constant-temperature and heat-insulation system comprises a constant-temperature system and a heat insulation system; the constant-temperature system comprises a circular constant-temperature bath and a red copper fluid pipe; the red copper fluid pipe is closely attached to the external wall of the calorimetry cylinder; the inlet of the red copper fluid pipe is connected with the circular constant-temperature bath by a constant-temperature trough; the constant-temperature trough is internally provided with a remote temperature probe that is connected with the circular constant-temperature bath; the temperature equalization system comprises a fan that is arranged in the sample chamber; the calibration system comprises the thermal resistor; and the signal processing and controlling system comprises a computer and a data collecting card and is used for collecting signals in real time and controlling the fan power, calibration power and water bath temperature.

The present invention relates to a device and method for providing precise temperature control using inexpensive temperature controllers and / or thermostats. Specifically the invention provides modifications to either a temperature controller and / or a thermostat that enables precise temperature control using inexpensive components. The series rheostat type differential eliminator (SRDE) is an inexpensive circuit that interfaces between a temperature controller and a thermistor or other temperature sensor element. The SRDE is essentially a circuit that switches the thermistor between a shunt and a rheostat in a manner that reduces or eliminates the temperature differential, while preventing the system from going into “chatter.” The heating resistor type differential eliminator (HRDE) is an inexpensive and simple circuit design that uses a thermostat and heating resistor to provide both direct and accurate temperature control for a heating and / or cooling control element, while also preventing the system from chattering. Either of these devices can be used with a temperature-controlled device for sleeping. Both the SRDE and HRDE embodiments reduce the temperature differential of simple automatic temperature controllers so that they are better capable of achieving precise temperature control.

The invention discloses an oil and gas pipeline corrosion online monitor, which measures the corrosion of an oil and gas pipeline by an electric-resistivity method. The monitor comprises a resistance probe, a measurement circuit and a measurement data processing unit, wherein the resistance probe (1) comprises waterproof jacks (12), a sealing screw thread (13) and a probe shell (14); the upper part of the sealing screw thread (13) is connected with the waterproof jacks (12), while a lower part is connected with the probe shell (14) made from stainless steel; a built-in sensing element (15), which is a reference resistor Rf, and a built-in thermal resistor Rt (10) are arranged in the probe shell (14), and are positioned in an identical temperature environment; an exposed sensing element (16), which is a measured resistor Rx, is arranged out of the probe shell (14), and is directly exposed in a corrosion environment in the pipeline; and the built-in sensing element (15) and the exposed sensing element (16) are made from an identical material and have an identical temperature coefficient. The resistance corrosion monitoring device of the invention has the characteristics of quick response, continuous testing capacity, the capacity of sensitively detecting the small change of a corrosion state in the pipeline, high reliability and high data reproducibility.

The invention discloses a Nickel-hydrogen battery pack heat dissipation system used in a hybrid motor vehicle. A reasonable battery interval and a suitable inclination angle are first designed to realize the vertical flow of air; and an upper layer battery and a lower layer battery are arranged at a certain interval; the lower layer battery is at the central line of the upper layer battery and the upper layer battery is at the central line of the lower layer battery, which causes the air not to flow into the upper side flow channel of the battery earlier; secondly, a thermal resistor is added on the battery surface based on the improvement of the structure; the thermal resistor is wrapped on the outside of a the battery module; the required wrapping thickness of each module is determined based on the heat dissipation effect; the surface of the battery with low temperature and good heat dissipation effect is thicker and the surface of the battery with high temperature and poor heat dissipation effect is thinner, thus the heat exchange between the battery and the air is reduced, and the local battery temperature is improved, and furthermore the temperature homogeneity of the whole battery pack is improved. The invention relates to a method that takes the temperature homogeneity of the module as priority by compromising the heat dissipation strength of the battery.

The invention discloses a negative temperature coefficient thermal resistor with a variable thermosensitive index, comprising a thermal resistor chip which is obtained by the following steps of: lamination and roasting of blank films and extruded formation of rolling films, wherein the blank films are obtained by slurry casting and drying formation of transition metal oxide mixed powders. The negative temperature coefficient thermal resistor with the variable thermosensitive index is characterized in that the blank films include high-B value blank films and low-B value blank films; the high-B value blank film contains 40-60mol% of manganese oxide MnO2, 30-50mol% of cobalt oxide Co3O4 and 1-20mol% of ferric oxide Fe2O3; and the low-B value blank film contains 40-60mol% of manganese oxide MnO2, 1-30mol% of nickel oxide Ni2O3 and 1-20mol% of ferric oxide Fe2O3. The value B rises as the temperature increases, thus the thermal resistor has a positive B-T characteristic, and the negative temperature coefficient alpha is within the temperature range from -100 DEG C to 150 DEG C, and the temperature coefficient is stably maintained within the range from -4% to -2%.

Semiconductor equipment includes: a first lead frame having a first semiconductor device; a second lead frame having a second semiconductor device; a thermal resistor for preventing heat transfer from the first lead frame to the second lead frame; and a temperature sensitive device for detecting operational temperature of the first semiconductor device. The first lead frame is separated from the second lead frame by a predetermined distance. The thermal resistor is disposed in a clearance between the first lead frame and the second lead frame. The second semiconductor device controls to restrict operation of the first semiconductor device when the operational temperature of the first semiconductor device is higher than a predetermined temperature.

This invention relates to a manufacturing method for an improved high temperature macromolecule PTC thermistor composed of a core, metallic foils adhered to both sides of the core, a lead out electrode welded on the outer surface of the foil and an insulation layer covering the outside, in which, said core is pressed by a powder conduction macromolecule material mixed by a macromolecule polymer, carbon black, carbon black dispersant and other processed aids in the following weight percentage: macromolecule polymer: 35-60%, carbon black:35-55%, Teflon powder: 0.5-20% and aids: 0.1-10%, in which, said macromolecule polymer is: PVDF, soluble Teflon, ethane and TFE multi-polymers, nylon, perfluoro-ethane and propene, ethane TFCE or their multi-polymer or their mixture.