High precision vibration sensor

Abstract

The invention relates to a high-precision vibration sensor comprising a vibration sensing circuit board. The vibration sensing circuit board is provided with a vibration sensing circuit composed of a 16-bit single-chip microcomputer memory chip, multiple capacitors and resistors. The capacitors and the resistors are electrically connected with the 16-bit single-chip microcomputer memory chip. The 16-bit single-chip microcomputer memory chip is provided with a power line and a serial bus. The sensor supports vibration state detection in three axis directions and supports + / -8g vibration acceleration, and the vibration detection error can reach 0.02g. The sampling data of the sensor is simple, and the stress state and vibration amplitude of a detected device can be detected easily through cooperation of the sensor and a single chip microcomputer. Moreover, the sensor can be used for precisely testing the vibration strength and vibration amplitude of a vibration object, and a frequency point with excessive vibration noise and the fatigue stress point of a device can be accurately avoided as long as a reasonable threshold is set. The vibration noise is reduced, and the service life of devices can be prolonged.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a high-precision vibration sensor mainly used in conjunction with household electrical appliances. Background technique [0002] After decades of rapid development of the global economy, it has driven rapid changes in the home appliance industry. With the emergence of smart home appliances, the home appliance industry has entered a new stage. However, the most fundamental problem affecting the use of home appliances has not been completely optimized or resolved so far. This is the vibration and noise problem in the use of home appliances, such as the vibration and noise of the external unit of the inverter air conditioner, and the operating noise of the household refrigerator. [0003] In order to optimize the comfort of home appliances during use and reduce the impact of vibration and noise on users, the common practice in the home appliance industry is to reduce the impact of v...

AI Technical Summary

Problems solved by technology

Among them, although optimizing the internal mechanical structure or using a large amount of sound-absorbing cotton can indeed partially achieve the purpose of noise reduction, its cost will increase a lot, and after a period of use of home appliances, the vibration and noise frequency points will inevitably drift. Noise reduction measures will soon lose their effectiveness

Using software to avoid some frequency points will also have the same problem, because when a new vibration frequency point appears, this noise reduction measure will also lose its original effect

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