Acceleration sensing verification device and method based on gas capacitance electric field effect

Abstract

The invention discloses an acceleration sensing verification device based on an air capacitance electric field effect. The acceleration sensing verification device comprises a shell base, a sealing cover, a sealing gasket, an upper inflating valve, a lower inflating valve, a capacitance measurement substrate and a structural plate capacitor, the shell base is a cuboid, a cuboid cavity is formed in the shell base, and one side face of the cuboid cavity is open; the sealing washer is clamped between the open side face of the shell base and the sealing cover. the shell base, the sealing washer and the sealing cover are fixed through a plurality of rivets, the cuboid cavity is sealed, and the cuboid cavity is filled with medium gas; a capacitance measuring substrate is arranged in the shell base, and a plurality of structural plate capacitors are arranged on the capacitance measuring substrate; and the upper inflating valve and the lower inflating valve are installed on the upper side face and the lower side face of the shell base respectively and used for replacing gas in the shell base. The device provided by the invention is compact in structure and scientific and reasonable in design, can be applied to verification and measurement of the acceleration characteristic of the air capacitor, and can verify the acceleration of the measured measurement platform more accurately in real time.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to an acceleration sensing verification device and method. Background technique [0002] Traditional accelerometers are mostly designed according to Hooke's law and Newton's second law. This kind of accelerometer has shown broad application prospects in various fields. According to Hooke's law, the deformation of the spring is proportional to the force it receives; according to Newton's second law, the acceleration of the object is proportional to the force when the mass is constant; therefore, a specific structural structure can be carried out so that the spring deformation and acceleration There is a certain quantitative relationship between them; that is, the acceleration can be measured by the deformation of the spring, which is the basic working principle of this type of accelerometer. [0003] This type of accelerometer usually consists of a proof mass (also k...

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Problems solved by technology

However, since the spring itself has a certain damping, the elastic coefficient of the spring itself will also change with the continuous wear of the spring, so this type of accelerometer will produce a large measurement error after a period of use, which may be due to inaccurate measurement , which poses a great hidden danger to the safety of the equipment

In this kind of acceleration measurement device, due to the inherent working principle of the device itself, the structure composed of the detection mass body, the spring and the damper will inevitably have a certain reaction time, so it will inevitably lead to a delay in the output of the measured value of this type of accelerometer. , can not achieve real-time monitoring of acceleration

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