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New pattern displacement gauge

A displacement meter, a new type of technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of narrow frequency band and low measurement sensitivity, and achieve the effect of flat frequency response, no phase shift change, and wide application prospects

Inactive Publication Date: 2005-06-01
INST OF MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, most of the displacement meters used in engineering are velocity-type displacement meters, not displacement meters in the true sense. This type of displacement meters converts the actual measured velocity into displacement through an integral circuit, and needs to be integrated with the secondary instrument. , such as strain gauges, numerical voltmeters, etc., have a narrow frequency band and relatively low measurement sensitivity, and usually need an amplifier to improve their measurement sensitivity

Method used

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  • New pattern displacement gauge
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Embodiment Construction

[0035] like figure 1 As shown, the pendulum 3, the laser grating 4 and the suspension system 5 are all arranged in the body 1, the measurement output end of the laser grating 4 is connected with the signal processing device, and the signal processing device processes the measured value and then displays or outputs it, and the suspension system 5 Located at the center of the bottom of the body cavity, the pendulum 3 is located directly above the suspension system 5, and can be in an absolutely static suspension state under the action of the suspension system 5. The pendulum 3 is equipped with a laser head 10, and the laser grating 4 is set on the body. On the four walls inside, when the laser head 10 is in a suspended state, it is just within the measurement range of the laser grating 4. When the body 1 is displaced, the laser beam emitted by the laser head 10 is displaced on the laser grating 4, thus according to The laser grating 4 can read the movement displacement.

[0036...

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Abstract

The new type of displacement meter includes laser source and laser range finding assembly for ranging; suspension system to make the laser source in suspension state; and signal processing unit to process measuring signal and display or output. The laser source, the laser range finding assembly and the suspension system are set inside one casing, and the measuring output of the laser range finding assembly is connected to the signal processing unit. Owing to the suspension technology and the laser ranging technology, the present invention measures the absolute displacement amount in the nanometer level precision, and has no phase shift variation, flat frequency response in wide frequency range, capacity of measuring static displacement, powerful anti-jamming capacity and high stability. The present invention may find its application in many fields.

Description

technical field [0001] The invention relates to a high-precision displacement measuring device. Background technique [0002] In the field of testing and control, the sensor is an indispensable and important component, and its quality directly determines the success or failure of the whole process. With the rapid development of modern science and technology, there are more and more parameters for measurement and control. It has been more and more widely used in various fields such as aviation, aerospace, weapons, ships, transportation, measurement, etc., and is being introduced into people's daily life. However, most of the displacement meters used in engineering are velocity-type displacement meters, not displacement meters in the true sense. This type of displacement meters converts the actual measured velocity into displacement through an integral circuit, and needs to be integrated with the secondary instrument. , such as strain gauges, numerical voltmeters, etc., have ...

Claims

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Application Information

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IPC IPC(8): G01B11/02G01B11/04
Inventor 丁桦周正华时忠民
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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