Eddy current type sensor measuring head

A sensor, eddy current technology, applied in the field of pneumatic sensors, can solve the problems of loss, sensor damage, insensitivity of measurement, etc., to achieve accurate detection results, prevent sensor damage, and prevent impact effects

Inactive Publication Date: 2015-02-25
CHANGZHOU HUAXIAN HARDWARE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in production, pneumatic sensors are required to perform positioning and distance measurement of some large machines or parts with low precision. The existing sensors for coarse positioning and distance measurement of large machines or parts are all integral structures. It is integrated with the sensor, the structure is complex, and the measurement is not sensitive. In production, the sensor is often damaged due to accidental collision with the measured object, resulting in loss

Method used

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  • Eddy current type sensor measuring head

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Embodiment Construction

[0013] Such as figure 1 The eddy current sensor measuring head shown includes a volute body 1, the upper end of the volute body has a large diameter and the lower end has a small diameter, and the upper end with a large diameter is set as an input port 4 along the tangential direction of the casing circumference of the volute body 1 , the input port 4 is connected to the sensor air supply device, the input signal air flow, the lower end of the volute body 1 with a small diameter is the exhaust port 6, the axis of the volute body 1 is set as the axis tube 2 from top to bottom, and the axis tube The outer diameter of 2 is smaller than the inner diameter of the lower part of the volute body 1, and the vortex chamber 3 is formed between the axis tube 2 and the volute body 1, and the input signal airflow flows in the vortex chamber 3, and the upper part of the axis tube 2 extends out of the vortex chamber. The top surface of the housing forms an output port 7, which is used to conn...

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Abstract

The invention relates to the technical field of pneumatic sensors, in particular to an eddy current type sensor measuring head. The eddy current type sensor measuring head comprises a volute, the diameter of the upper end of the volute is large, the diameter of the lower end of the volute is small, an input port is formed in the large-diameter upper end of the volute in the tangent direction of the volute, the small-diameter lower end is an exhaust port, an axis pipe is arranged at the axis position of the volute from top to bottom, the upper portion of the axis pipe extends out of the top face of the volute to form an output port, the output port is provided with a corrugated pipe connected with a sensor, the lower portion of the axis pipe retracts in the volute, the lower end face of the axis pipe is not flush with the bottom end face of the volute, the outer diameter of the axis pipe is smaller than the diameter of the lower end of the volute, and the measuring head is connected with the sensor through the corrugated pipe. The sensor is protected against damage when impacted, the measuring head feeds back measurement information in an eddy current mode, and measurement is sensitive and accurate.

Description

technical field [0001] The invention relates to the technical field of pneumatic sensors, in particular to an eddy current sensor measuring head. Background technique [0002] The pneumatic sensor does not contact the detection element, and uses various physical characteristics presented by the gas flow in the flow field to measure various physical quantities. It can detect dimensional accuracy, positioning accuracy, counting, deviation correction, distance measurement, liquid level control, presence or absence judgment, material detection, etc., and is widely used in industrial production. For example, in production, pneumatic sensors are required to perform positioning and distance measurement of some large machines or parts with low precision. The existing sensors for coarse positioning and distance measurement of large machines or parts are all integral structures. It is integrated with the sensor, the structure is complex, and the measurement is not sensitive. In produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/42
Inventor 郑星宇
Owner CHANGZHOU HUAXIAN HARDWARE FACTORY
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