37results about "Thermometers using electric/magnetic elements" patented technology

Measurement circuit components are included in an integrated circuit fabricated on a semiconductor substrate. These measurement circuits are connected to a voltage regulation circuit that provides the integrated circuit voltage source. These measurement circuits provide signals to control the voltage regulation circuit to adjust the voltage output to the integrated circuit based upon a measurement values obtained on the semiconductor device. These measurements include temperature and IR drop at locations on the semiconductor substrate, along with the frequency response of integrated circuit.

A temperature sensing circuit using CMOS switch-capacitor includes a PNP BJT, a hysteresis comparator, a transconductance amplifier, two current sources, two capacitors, and six switches. A voltage complementary to the absolute temperature (CTAT) is generated according to the PNP BJT, and a voltage proportional to the absolute temperature (PTAT) is generated according to two capacitors and the transconductance amplifier. When the voltage proportional to absolute temperature is greater than the voltage complementary to absolute temperature as the temperature rising, the hysteresis comparator outputs a high level signal.

The invention discloses a microelectronic temperature sensor and a preparation method thereof. Specifically, the sensor is a graphene oxide capacitive temperature sensor based on a post-COMS MEMS micro-processing technology. A graphene oxide material is a new type nano-material which has a high dielectric constant, and a dielectric constant value can be changed rapidly along with the change of a temperature. Compared with the temperature sensors such as a common Pt resistor and a PN junction, the microelectronic temperature sensor has the advantages that because a current does not pass through a device, the influence of self-heating effect on a measurement process is avoided when the measurement is carried out, the measurement error is low, the heat loss is low and the dynamic response time is short. Because the dielectric constant of the graphene oxide can be increased rapidly along with the rise of the temperature at the low temperature, a method for detecting a required high-sensitivity temperature sensor at the low temperature is realized. Through combination of the post-COMS MEMS micro-processing technology, the temperature sensor is small in size, low in cost and short in response time.

In some embodiments, a method may be provided for calibrating integrated circuit temperature sensors. The method may include sensing a first temperature using a first temperature sensor and a second temperature using a second temperature sensor. The first temperature sensor may be calibrated and is external to a package of the integrated circuit. The second temperature sensor may be included in the integrated circuit. The method may include increasing a temperature of the integrated circuit. The method may include allowing the integrated circuit and the package to thermally equilibrate over a first period of time. The method may include sensing a first slope of a temperature decay by the first temperature sensor. The method may include sensing a second slope of a temperature decay by the second temperature sensor. The method may include calibrating the second temperature sensor responsive to a difference between the first and second temperatures and the first and second slopes.

A sensor device is provided with a voltage detection type sensor unit for converting a physical quantity into a voltage value and outputting a voltage signal indicating the voltage value; a chopper amplifier unit for generating a modulation signal by chopping the voltage signal output from the sensor unit with a predetermined chopping frequency, amplifying the modulation signal into an amplification signal, then demodulating the amplification signal and outputting it as an output signal; an integration unit including an operational amplifier, an input resistor connected to the inverting input terminal of the operational amplifier and a capacitor connected between the inverting input terminal and an output terminal of the operational amplifier; and a digital conversion unit for converting the output signal integrated by the integration unit into a digital signal.

The invention discloses a temperature acquisition circuit of a thermistor and a self-checking method of the temperature acquisition circuit. The acquisition circuit comprises an MCU, a voltage dividing branch, a self-checking branch and a sampling filter capacitor. After the MCU controls the self-checking branch to be conducted, the acquisition circuit begins to execute a self-checking function; and when the condition that a difference value between actual sampling voltage and theoretical sampling voltage output by the voltage dividing branch is not in a preset difference value range is determined, a failure of the acquisition circuit is judged. Compared with a traditional acquisition circuit, the self-checking function is added to the acquisition circuit disclosed by the invention, and the failure of a sampling circuit can be timely found out through self-checking of the acquisition circuit, so that a technician can timely take effective measures, and the sampling error caused by the failure of the sampling circuit is avoided.

The invention relates to a passive audible and visual alarm temperature indicating device used for monitoring the temperature of electrical connectors among power supply unit parts in a power system.The temperature indicating device is composed of an induction power supply, a voltage stabilizing part, a temperature detection part, an audible alarm system and a luminescent display part, and has the advantages of high temperature measurement accuracy, good safety, obvious effect with common action of audible prompt and visual prompt no matter in the day or night, an audible and visual alarm given in the case of overheat occurred on a connecting point of electrical equipment, and no need of independently adding an external power supply, thus guaranteeing long-term use of the device without need of maintenance; and the device further has the advantages of repeated use, long service life and extremely low energy consumption relative to a disposable temperature indicating wax piece. Only anew temperature measuring element is required for replacement even though the accidental temperature of a contact point is suddenly risen to burn down the temperature measuring element; and temperature detection can be realized only by pasting the temperature measuring element to a heating part to be detected, thus the device is convenient in use.

An internal temperature measuring device is configured to include an acquisition unit that acquires a one side temperature and a one side heat flux of a measurement target on a one side surface side and an opposite side temperature and an opposite side heat flux of the measurement target on an opposite side surface side; and a computation unit that computes an internal temperature of the measurement target by applying the one side temperature, the one side heat flux, the opposite side temperature, and the opposite side heat flux.

The invention discloses a wireless type-based soil temperature and moisture gradient measuring system. The soil temperature and moisture gradient measuring system comprises sensor groups consisting of soil temperature sensors and soil moisture sensors, wherein each sensor group is arranged in a vertical gradient direction of soil to be measured, a sensor node is formed by multiple sensor groups in the same vertical gradient direction through an analog-digital conversion channel, a node transmission network is formed by a ZigBee wireless network and a routing node between every two sensor nodes, the node transmission network is connected with a central acquisition node through a multi-channel analog switch to form a star topology structure, and the central acquisition node carries out internal storage and precision calibration on data transmitted by the sensor node, and transmits the processed data to a data display terminal through an RS232/RS485 communication interface for observation and analysis. By adopting the technical scheme of the invention, the measurement of three-dimensional soil temperature and moisture is achieved, and each sensor node is used for wireless transmission of data, so that the energy consumption is low, and the applicable occasions are wide.

The invention relates to the field of temperature monitoring based on wireless sensor network technology, and discloses a wireless remote stored-grain temperature monitoring system with low energy consumption, easy maintenance, and multi-path acquisition. The invention is realized through the following scheme: the system comprises a wireless terminal system, a wireless network router, a wireless network base station, and a temperature monitoring server; the data acquisition wireless terminal is provided with a 15-path analog signal switch inside, and a temperature sensor transmits temperature data to the analog signal switch through a connecting wire; the data acquisition wireless terminal, the wireless network router and the wireless network base station perform bidirectional digital communication through a connector and a wireless radio frequency module. The invention solves the problem of wired network dependency of traditional stored-grain temperature monitoring systems, substitutes single-path temperature measurement with multi-path temperature acquisition, not only reduces communication cost and personnel labor intensity, but also improves timeliness and accuracy of temperature monitoring.

The invention provides a temperature and humidity sensor comprising a substrate. A temperature sensitive unit and a humidity sensitive unit are arranged on the substrate. The humidity sensitive unit is arranged above the temperature sensitive unit. A heat conductive medium is arranged between the temperature sensitive unit and the humidity sensitive unit. The temperature sensitive unit and the humidity sensitive unit are respectively fixed to the substrate by bonding pads. The humidity sensitive unit includes an upper electrode, a lower electrode, and a moisture sensitive medium arranged between the upper and lower electrodes; the upper electrode has a mesh microporous structure; and the lower electrode is in contact with the heat conductive medium. The heat conductive medium is a heat conductive silicone sheet or a thermally conductive ceramic insulating sheet. The temperature sensitive unit and the humidity sensitive unit are fixed to the substrate by the first bonding pad and the second bonding pad. According to the invention, the heat generated by the temperature sensitive unit is transferred to the humidity sensitive unit to solve a problem of condensation of the humidity sensitive unit; the heating structure set by the traditional sensor is saved; the size of the temperature and humidity sensor is reduced; and the production cost is lowered.

A smart part comprising: a body, manufactured by a three dimensional (3D) additive manufacturing (AM) process, having high-stress and low-stress sections, wherein when the smart part is in operational use the high-stress section is subjected to higher stress than the low-stress section; a resistive strain gauge embedded within the body during the AM process at the high-stress section, wherein the strain gauge is configured to produce a variable output; and a temperature sensor embedded within the body during the AM process at the low-stress section, wherein the temperature sensor is configured to produce a variable output based on temperature.

The invention discloses a thermocouple temperature measurement device and a temperature detection method. The device comprises a thermocouple, a conditioning module used for carrying out common-mode filtering processing of an analog hot end thermoelectric potential signal outputted by a hot end of the thermocouple, an analog-to-digital converter used for converting the analog hot end thermoelectric potential signal subjected to filtering processing into a digital hot end thermoelectric potential signal, a thermistor used for sensing the cold end temperature of the thermocouple, and a controller used for obtaining a cold-end thermoelectric potential according to the cold-end temperature of the thermocouple, obtaining a hot-end thermoelectric potential according to the digital hot-end thermoelectric potential signal, calculating a target thermoelectric potential according to the hot-end thermoelectric potential and the cold-end thermoelectric potential, and obtaining the hot-end temperature of the thermocouple according to the target thermoelectric potential. The device is advantaged in that the device can improve the anti-interference capability, guarantees high precision of temperature detection, achieves hot-end thermoelectric potential correction according to the hot-end thermoelectric potential and the cold-end thermoelectric potential of the thermocouple through employing an inverse temperature measurement algorithm, obtains the hot-end temperature of the thermocouple, is good in flexibility, and is wide in application range.

The invention discloses a contact detection device and method. The contact detection equipment comprises a temperature sensing circuit and a logic processing circuit, the temperature sensing circuit is electrically connected with the logic processing circuit; the contact detection device obtains environment temperature parameters through the temperature sensing circuit. The environment temperatureparameter or the temperature characteristic parameter extracted from the environment temperature parameter is analyzed through the logic processing circuit; therefore, the problems that the contact detection is easily interfered by ambient light and the detection error is large due to the principle of light path reflection are solved, the detection accuracy of the contact detection equipment is improved, and the cost is reduced.

The invention discloses a device for acquiring and monitoring the node temperature of a high-tension transmission line. The device comprises front-end acquisition units and a monitoring terminal, wherein each front-end acquisition unit is arranged on each to-be-monitored line node and comprises a thermocouple acquisition band and a signal processor; one end of each thermocouple acquisition band is arranged on a temperature monitoring point of each line node, and the other end of each thermocouple acquisition band is detachably connected to the input end of the signal processor; the output end of the signal processor is connected with the monitoring terminal; each thermocouple acquisition band comprises more than two thermocouples and an insulated jacket; the thermocouples are arranged in parallel in the insulated jacket; the signal processor comprises an A/D conversion circuit, a controller, a wireless transmitting device and a power supply module; each thermocouple is respectively connected with an input port of the controller through the A/D conversion circuit; the controller is connected with the monitoring terminal through the wireless transmitting device; and power is supplied to the controller by a power supply. The device disclosed by the invention is accurate and timely in temperature detection and is suitable for monitoring the high-tension transmission line.

The invention discloses a double-branch multi-point thermocouple which comprises a mounting flange, fixed hanging rings are arranged on the two sides of the mounting flange, a triangular block fixing seat is arranged at the top of the mounting flange, a second sealing block is arranged at the top of the triangular block fixing seat, a sealing cavity block is arranged at the top of the second sealing block, and a first sealing block is arranged at the top of the sealing cavity block. The thermocouple has the advantages that the structure is novel, the internal structure is compact, compared with imported similar products, the thermocouple can still work normally without one temperature measuring point and other temperature measuring points, the whole imported product is scrapped without one temperature measuring point, control over the temperature and pressure of the device and sensitive control over the device are good in the production process, the produced device has high precision, high stability and high pressure resistance, not only can prevent harm to people caused by leakage of various gases such as toxic, flammable and explosive gases, but also is low in price and short in delivery cycle, and provides convenience for normal use of people; in addition, the temperature measuring point can be replaced and repaired in time more conveniently when damaged, convenience is provided for workers, and therefore the normal progress of work is not affected.

The invention discloses a multi-channel temperature measurement method based on a thermodetector. The method comprises the steps of S1, multi-channel selection, S2, voltage acquisition, S3, voltage correction and S4, temperature conversion. Wherein S1 multipath selection comprises the steps that the ADC selectively collects any one path of voltage in the multipath input ends of the thermocouple through a multipath switch, the MCU is provided with a first control unit, at the same moment, the MCU controls the ADC through the first control unit to only selectively collect one path of voltage in the multipath input ends of the thermocouple, the MCU is further provided with a second control unit, and the second control unit controls the ADC to selectively collect one path of voltage in the multipath input ends of the thermocouple. And the MCU selectively controls the ADC to acquire multiple paths of voltage in the multiple paths of input ends of the thermocouple through the second control unit in a rotary circulation manner. Therefore, a user can directly measure the temperature of a path or a plurality of paths of ports independently or circularly through the first control unit and the second control unit according to the actual requirement for measuring the temperature of the path or the plurality of paths of ports, and large selectivity is provided for the user.

A temperature sensor, having a first conductor made of a first material comprising an end section, a second conductor made of a second material, which differs from the first material, comprising an end section, and a casing for receiving the end sections of the two conductors and for positioning in a process atmosphere or in a process fluid and/or on a surface of a process structure. According to the invention, a measuring point body structure is provided, which is arranged within the casing or on the casing, wherein the first conductor and the second conductor directly or indirectly form a thermocouple in or on the measuring point body structure and the measuring point body structure comprises a barrier material.

The invention discloses a press machine kinematic pair temperature monitoring device in the field of press machines. The press machine kinematic pair temperature monitoring device comprises a machinebody. The machine body is provided with a sliding block capable of sliding up and down. Four guide assemblies are vertically arranged on the machine body corresponding to the four corners of the sliding block. Each guide assembly is provided with at least one temperature sensor I. A front bearing block of each crankshaft is provided with a temperature sensor II, and a rear bearing block of each crankshaft is provided with a temperature sensor III. A connecting rod of each crankshaft is provided with temperature sensors IV. A big gear at the rear end of each crankshaft is engaged with a small gear on a gear shaft. A flywheel on each gear shaft is provided with at least two temperature sensors V. The press machine kinematic pair temperature monitoring device can detect the temperature of a kinematic pair of a press machine and give a high-temperature early warning on the kinematic pair with the excess temperature.

The invention discloses a thermistor and a micro-bolometer based on the thermistor. According to the thermistor, a three-layer stack structure of a first aluminum nitride thin film, a vanadium oxide thin film and a second aluminum nitride thin film is sequentially formed on a substrate; the first aluminum nitride thin film on the bottom layer has a high heat conductivity coefficient and the excellent temperature uniformity and can serve as a growth foundation of the vanadium oxide thin film; the vanadium oxide thin film on the middle layer serves as a thermosensitive reaction layer, has higher temperature resistance coefficient, higher reaction speed and lower processing temperature and has the wide temperature measuring range; and the second aluminum nitride film on the top layer serves as a passivation layer, and has the excellent heat conductivity, temperature uniformity and the protection effect; furthermore, the three-layer stack structure is manufactured in a micro floating bridge structure of the micro bolometer, so that the temperature uniformity can be improved, and the absorption efficiency of far infrared wavelength of 10-17 microns can be increased.

The invention provides an integrated temperature sensor with high heat-conducting property, which comprises a temperature sensor body, the temperature sensor body comprises a fixed seat, a sealing cover is mounted at the top of the fixed seat, a fixed bolt is mounted on the sealing cover, the sealing cover is mounted on the fixed seat through the fixed bolt, a wiring pipe is installed on one side of the fixed bolt, the wiring pipe is fixed to the sealing cover, a mounting base is welded to the bottom of the fixing base, and a rotating base is installed on the mounting base. The integrated temperature sensor with the high heat-conducting property comprises a contact type and a non-contact type, contact monitoring is carried out through the monitoring head, non-contact monitoring is carried out through the inductor on the electric plate, when the integrated temperature sensor is used, the rotating base is driven to rotate through the fixing pipe, the fan blades in the rotating base blow wind upwards to the inductor, and non-contact monitoring is carried out through the inductor, so that whether data are consistent or not is observed, and double monitoring is completed.

The invention relates to a temperature monitoring method and device and a storage medium, the method is applied to electronic equipment, and the method comprises the steps: obtaining the oscillation frequency of a frequency source of the electronic equipment in a preset temperature measurement period; determining the temperature of a target object to be subjected to temperature measurement according to the oscillation frequency and a preset reference temperature; and executing preset monitoring operation according to the temperature, and using the preset monitoring operation to output prompt information under the condition that the temperature meets the preset monitoring condition.

The invention discloses a temperature monitoring and alarming system, and relates to the field of nursing devices. By the temperature monitoring and alarming system, the problems that when people sleep at night, particularly in the spring and autumn, windows are open, the air temperature is relatively high before people sleep, a quilt is not required or only quite thin quilt is required, but in the midnight, the air temperature is reduced, people who fall asleep cannot wake up easily to add the quilt according to the temperature, and then catch cold easily, and babies have these problems particularly are solved. A temperature sensor and a control unit consisting of a singlechip are used for acquiring the environment temperature, when the temperature changes to be a preset value, a buzzer and a light emitting diode are driven to send out prompt, and then a user can add or reduce the quilt. The temperature monitoring and alarming system is skillful in conception, simple in structure, lowin cost and remarkable in effect, and has extensive market prospect and application value.

The invention relates to a method and a device for fixing thermocouples in a steel-plate-wrapped concrete combined member. The method comprises the following steps: determining the position and the diameter of a drilling hole of a steel plate wrapped by the member according to the measurement position of a temperature field and the number of the thermocouples; measuring the distance from a measuring point to the outer surface of the drilling steel plate on the thermocouples, marking the distance, arranging the thermocouples in an approximately circular shape, and binding the thermocouples at a non-extending section by using an iron wire; a through round hole is drilled in the position of the steel plate of the component, and the fixing support is welded to the component; firstly, concrete is poured to the lowest point of a round hole, a thermocouple extends from the round hole to the marked position and is fixed to a support, and the concrete is poured manually and covers the thermocouple; and finally, upper concrete is poured and vibrated compactly. By using the method, the thermocouple in the combined member can be accurately positioned and fixed, so that the internal concrete temperature field can be measured, the damage to the member and the thermocouple is small, the method is simple, and the operation is easy.

The invention discloses an identification method and apparatus for a temperature fault of a turbine. The method comprises: a temperature sensor collects a turbine temperature signal and converts the temperature signal into a resistance signal; the resistance signal is inputted into a signal conditioning module and is converted into a voltage signal by an electric bridge in the signal conditioning module, and after amplification on the voltage signal by a difference circuit, the processed signal is converted into a digital signal by an analog-to-digital converter; and the digital signal is transmitted to a processing module for processing, the processing module calculates a corresponding turbine temperature based on the digital signal and determines whether the turbine temperature reaches a preset temperature threshold value; if so, the operation of a motor is controlled normally; and if not, a three-phase full-bridge drive circuit is turned off and thus the motor stops the operation or sends out temperature fault warning information. With the method, a noise interference problem occurring during a temperature signal collection process based on a single-end grounding way in the prior art is solved, so that the temperature fault identification capability of the turbine is improved.