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High-precision quartz crystal thermometer

A technology for quartz crystals and thermometers, applied in thermometers, thermometers with directly heat-sensitive electric/magnetic elements, conductors, etc., can solve the problems of safety and accuracy of long-distance underground temperature sensors, and meet the requirements of Power supply and signal transmission, improve the overall safety performance, and improve the effect of strength

Pending Publication Date: 2017-06-13
NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA
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Problems solved by technology

[0006] The purpose of the present invention is mainly to solve the problem that the traditional power supply method is difficult to guarantee the safety and accuracy of the long-distance underground temperature sensor at the same time, and to provide a safe and reliable design scheme for high-precision temperature measurement of deep wells in certain industries

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Embodiment Construction

[0023] Below by embodiment the present invention will be further described, and its purpose is only to understand research content of the present invention better but not limit protection scope of the present invention.

[0024] Such as figure 1 As shown, the high-precision quartz crystal thermometer of the present invention is mainly composed of a sensor 1, a cable 2 and a host 3.

[0025] The quartz crystal resonator of sensor 1 is made of LC-cut plano-convex lens quartz crystal block, its diameter is about several millimeters, and the radius of curvature of the convex surface is about 100 millimeters or more. The quartz crystal resonator is packaged in a helium-filled shell, and its piezoelectric effect and the characteristic of natural vibration frequency changing with temperature are used in the sensing circuit to form a thermal oscillator. The high-precision quartz crystal thermometer can obtain the relationship between the resonant frequency of the quartz crystal and t...

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Abstract

The invention provides a high-precision quartz crystal thermometer. The thermometer comprises a sensor, a cable and a host, wherein the output end of the sensor is connected with the input end of the host through the cable; the sensor is a quartz crystal sensor, and is used for sensing temperature; a frequency signal of the sensor is transmitted to the host through the cable; and the host is used for recording a frequency signal so as to complete data collection. According to the high-precision quartz crystal thermometer, the full-scope resolution is 0.000001 DEG C by adopting an equal precision frequency collection mode; the whole safety performance of the thermometer is improved by adopting an isolation power supply mode, so that long-distance transmission of the frequency signal becomes possible; and the signal is protected from external interference by adopting the single-core cable with shield.

Description

technical field [0001] The invention belongs to the field of long-distance and high-precision temperature measurement, in particular to a high-precision quartz crystal thermometer. Background technique [0002] Seismic, water conservancy, environmental protection and other industries will involve real-time observation of temperature physical quantities; especially in the seismic industry, the capture of earthquake precursor information has been verified by many scholars. The abnormal changes provide very valuable data for the research and exploration of earthquake prediction. [0003] For long-distance temperature observation in special industries, if traditional observation methods are used, there are two technical bottlenecks: first, high precision is required, such as the earthquake industry requires temperature observation with a resolution of 0.0001°C; second, long-distance transmission of signals is required ; And the premise of realizing these professional measuremen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/32H01B9/04H01B11/18H01B7/22H01B1/02
CPCH01B1/02H01B7/223H01B9/04H01B11/1895G01K7/32
Inventor 何案华赵刚邓卫平贾鸿飞卫清赵京轶
Owner NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA
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