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Special-shaped fork arm-adopted resonant quartz tuning fork temperature sensor

A temperature sensor, quartz tuning fork technology, applied in the direction of thermometers, thermometers, and electrical devices that use electrical/magnetic components directly sensitive to heat, which can solve the problem of affecting the accuracy, consistency and stability of resonant quartz crystal temperature sensors , positioning accuracy and demanding optical cold processing technology, to achieve the effect of extending temperature working range and mechanical vibration and shock resistance, reducing leakage and parasitic vibration mode interference, and improving response speed.

Inactive Publication Date: 2019-07-23
黑龙江省计量检定测试研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are still some unsatisfactory points in the current resonant quartz crystal temperature sensors that work in the width bending vibration mode, for example: the positioning accuracy of the crystal cut shape of the resonant quartz tuning fork thermal resonator used in the prior art and The optical cold processing process is demanding, and the deviation accuracy from the Y-axis (mechanical axis), Z-axis (optical axis) and X-axis (electrical axis) of the quartz crystal is very high, usually less than or equal to 1'
Otherwise, it will seriously affect the accuracy, consistency and stability of the resonant quartz crystal temperature sensor

Method used

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  • Special-shaped fork arm-adopted resonant quartz tuning fork temperature sensor
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  • Special-shaped fork arm-adopted resonant quartz tuning fork temperature sensor

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Experimental program
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specific Embodiment approach 1

[0030] Specific implementation mode one: refer to figure 1 and figure 2 This embodiment is described in detail. A resonant quartz tuning fork temperature sensor using a special-shaped fork described in this embodiment includes: a tube cap 1, a tube base 2, a quartz tuning fork thermal resonator 3 and an insulator, and the tube cap 1 covers Closed on the upper surface of the tube base 2, forming a sealed space between the two, the top of the insulator extends through the tube base 2 into the inside of the sealed space, and the quartz tuning fork thermal resonator 3 is located in the sealed space;

[0031] Such as figure 2 As shown, the quartz tuning fork thermosensitive resonator 3 of the present embodiment includes a connecting portion 31, two fork arms 32 and a base portion 33; the head ends of the two fork arms 32 are connected to the head end of the base portion 33 through the connecting portion 31, and The two fork arms 32 and the base portion 33 are located on the sa...

specific Embodiment approach 2

[0038] Specific implementation mode two: refer to image 3 Describe this embodiment in detail. The difference between a resonant quartz tuning fork temperature sensor using special-shaped fork arms described in this embodiment and the resonant quartz tuning fork temperature sensor described in Embodiment 1 is that the two fork arms 32 at the head end The distance between them is smaller than the distance between the ends of the two fork arms 32, and the rest of the structure is exactly the same as that of Embodiment 1.

specific Embodiment approach 3

[0039] Specific implementation mode three: refer to Figure 4 Describe this embodiment in detail. The difference between a resonant quartz tuning fork temperature sensor using special-shaped fork arms described in this embodiment and the resonant quartz tuning fork temperature sensor described in Embodiment 1 is that: the two fork arms of this embodiment 32 and the base portion 33 are located on opposite sides of the connecting portion 31, and the two fork arms 32 are mirror-symmetrically arranged. The working mode of this structure is thickness bending vibration. Different from the traditional quartz tuning fork structure, its two fork arms 32 and base 33 are arranged in two opposite directions, and the length direction of the fork arms is the direction of the mechanical axis of the quartz crystal. The width direction is the electric axis direction of the quartz crystal, and the fork arm thickness direction is the optical axis direction of the quartz crystal.

[0040] There ...

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Abstract

The invention discloses a special-shaped fork arm-adopted resonant quartz tuning fork temperature sensor, relates to the field of resonant quartz tuning fork temperature sensors, and aims at solving the problems of the existing quartz tuning fork temperature sensors. According to the special-shaped fork arm-adopted resonant quartz tuning fork temperature sensor, two fork arms of a quartz tuning fork thermosensitive resonator are connected with a base part through a connection part; the two fork arms and the base part are located on the same side or two sides of the connection part 31; an included angle is formed between the head ends of the two fork arms; the extension directions of the non-parallel fork arms make the overall azimuth errors become smaller. The crystal cut of the resonant quartz tuning fork thermosensitive resonator with the special-shaped fork arms is ZYtW(115+ / -3 degrees) / (44+ / -5 degrees). Through the superposition, the requirements for comprehensive errors of crystalprocess are not rigor. The special-shaped fork arm-adopted resonant quartz tuning fork temperature sensor is suitable for treatment monitoring of medical tumors, rectal thermometers for livestock, thermometers for family planning women, seismic precursor monitoring of seismic wells, and oil well annular temperature detection instruments.

Description

technical field [0001] The invention belongs to the field of resonant quartz tuning fork temperature sensors, in particular to a fork arm of the sensor. Background technique [0002] Traditional resonant quartz tuning fork temperature sensors are composed of two thermally sensitive quartz tuning fork resonators with the same size, parallel to each other, and left and right symmetrical fork arms. Its main feature is that the two fork arms of the thermosensitive tuning fork resonator of the quartz tuning fork temperature sensor all extend out in parallel from the base area, and in the plane formed by the two fork arms, the two fork arms are mutually Bending vibrations are performed in opposite directions in balance, constituting an "in-plane bending vibration", the so-called "thickness bending vibration" mode. For example: papers "Low-cost and high-performance resonant quartz tuning fork temperature sensor", "A low-cost and high-performance resonant quartz tuning fork tempera...

Claims

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Application Information

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IPC IPC(8): G01K7/32
CPCG01K7/32
Inventor 陈洪侠孟景华吕妍刘缨林江周彤刘丽丽闫萍
Owner 黑龙江省计量检定测试研究院
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