32results about How to "Improved Temperature Compensation Accuracy" patented technology

The invention discloses a cement-based intelligent composite material strain sensor with a temperature compensation function, which comprises a strain monitoring module and a temperature monitoring module, wherein the strain monitoring module and the temperature monitoring module are formed by carbon-fiber cement-based intrinsic intelligent composite material and four parallel electrodes arranged on the composite material; and the strain monitoring module and the temperature monitoring module are connected and are respectively provided with four parallel electrodes. The cement-based intelligent composite material strain sensor has the advantages of temperature compensation function, high sensitivity coefficient, high voltage-sensitive and good performance stability, is applicable to strain monitoring of concrete structures under various environment conditions, avoids the defect of poor technical effect of a thermoelectric couple for directly measuring the temperature and carrying out temperature function, has the characteristics of high temperature compensation accuracy and simple technology and simultaneously improves the temperature compensation effect and the strain monitoring accuracy of the sensor under various strain conditions.

A circuit device includes an oscillation circuit configured to cause a resonator to oscillate, a clock signal output circuit configured to output a clock signal based on an oscillation signal from the oscillation circuit, a temperature compensation circuit configured to perform temperature compensation on an oscillation frequency of the oscillation signal, a low-potential-side power supply pad to which low-potential-side electric power is supplied, a high-potential-side power supply pad to which high-potential-side electric power is supplied, and an inter-power-supply capacitor provided between a low-potential-side power supply line electrically continuous with the low-potential-side power supply pad and a high-potential-side power supply line electrically continuous with the high-potential-side power supply pad. The inter-power-supply capacitor is formed of at least two metal layers provided in a region where the temperature compensation circuit is disposed in a plan view.

The invention relates to a wide-temperature-range high-precision sputtering film pressure sensor and a manufacturing method thereof. A sensitive element in the sensor comprises a transition layer, aninsulating layer and a circuit layer which are arranged at the end part of a pressure interface; the circuit layer is provided with a pressure measuring circuit and a temperature compensation circuit;an adapter base is fixedly arranged on the sensitive element; a plurality of electric connecting pieces are circumferentially and uniformly arranged on the adapter base; each electric connecting piece comprises an arc-shaped bonding pad and an inserting pin which are connected with each other; the arc-shaped bonding pads are horizontally arranged on the adapter base; the inserting pins are perpendicular to the adapter base, and the bottoms of the inserting pins are fixed through bumps; a leading-out signal of the sensitive element penetrates through the adapter base to be connected with the arc-shaped bonding pad; a protective plate is arranged above the bumps to cover the adapter base; the inserting pin penetrates through the protective plate to be welded with one end of a lead wire; andthe outer side of a whole after welding of the inserting pin and the lead wire is further subjected to contour welding reinforcement through a metal wire. The pressure sensor solves the technical problems that an existing pressure sensor is relatively narrow in using temperature range, inaccurate in pressure measurement and not suitable for application under severe conditions of strong vibration,large impact and the like.