Piezoelectric double-cross beam vehicle vibration detection device based on ground

Abstract

The invention discloses a piezoelectric double-cross beam vehicle vibration detection device based on the ground. Compared with a vibration detection device installed on a vehicle, the device can overcome the influence caused by vibration of the vehicle on a measuring result and improve the precision of the measuring result of the vehicle vibration. The piezoelectric double-cross beam vehicle vibration detection device based on the ground comprises an end cover (1), a fixing bolt (2), an upper rectangular frame (3), an installation bolt (4), a shell (5), a mass block (6), a piezoelectric plate (7), a spring gasket (8), a supporting column (9), a cross beam (10), a base (11), a double-cross beam (12), a lower rectangular frame (13) and a fixing nut (14). The piezoelectric double-cross beam vehicle vibration detection device based on the ground is compact in structure, long in service life and accurate in detection result and is of great importance in the field of vehicle vibration detection.

Description

technical field [0001] The invention relates to the field of piezoelectric vibration detection, more specifically, it relates to a road surface-based vehicle vibration detection device. Background technique [0002] The vehicle vibration caused by the road surface not only affects people's ride comfort but also affects the service life of various parts of the vehicle. Therefore, the detection of vehicle vibration signals has always been a key research direction in the field of vehicle engineering. Since the signal of vehicle vibration is mainly the acceleration signal, it is often Acceleration sensors are used to collect acceleration signals. Piezoelectric acceleration sensors have been widely used for their high sensitivity, anti-electromagnetic interference, and insensitivity to temperature changes. However, the existing methods for measuring vehicle vibration acceleration signals usually use pressure The electric acceleration sensor is directly installed on the vehicle it...

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Problems solved by technology

[0002] The vehicle vibration caused by the road surface not only affects people's ride comfort but also affects the service life of various parts of the vehicle. Therefore, the detection of vehicle vibration signals has always been a key research direction in the field of vehicle engineering. Since the signal of vehicle vibration is mainly the acceleration signal, it is often Acceleration sensors are used to collect acceleration signals. Among them, piezoelectric acceleration sensors have been widely used for their high sensitivity, anti-electromagnetic interference, and insensitivity to temperature changes. However, the existing methods for measuring vehicle vibration acceleration signals usually use the pressure The electric acceleration sensor is directly installed on the vehicle itself. Although this measurement method is simple, the measurement results are greatly affected by factors such as vehicle engine vibration, which cannot fully reflect the impact of the road on vehicle vibration, and the measurement results are not ideal.

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