Three-axis vibration temperature composite rail transit sensor

Abstract

The invention discloses a three-axis vibration temperature composite rail transit sensor. The sensor comprises an outer shell. A temperature chip and an insulating spacer are arranged at the bottom of the outer shell. A positioning ring is arranged on the periphery of the insulating spacer, and a base is installed in the positioning ring. An inner cylinder is pressed on the periphery of the base. A piezoelectric wafer and a mass block are installed in the middle of the base, and the piezoelectric wafer is electrically connected with a spindle signal adjusting circuit. A pressing ring is in threaded connection in the outer shell. The pressing ring is tightly pressed on the top of the inner cylinder. An MEMS chip and conditioning circuit is arranged between the outer side of the positioning ring and the outer shell. The MEMS chip and conditioning circuit, the spindle signal adjusting circuit and the temperature chip are electrically connected with a six-core socket. The positioning ring and the pressing ring are insulators. Epoxy glue fills the gaps among the positioning ring, the inner cylinder, the pressing ring and the outer shell. The MEMS chip detects X-direction vibration signals and Y-direction vibration signals, a sensing piece composed of the piezoelectric wafer, the mass block, a fastening ring and the base detects Z-direction vibration signals, the temperature chip detects temperature signals, so that whether a locomotive has a fault or not can be judged comprehensively.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a three-axis vibration-temperature composite rail transit sensor. Background technique [0002] Existing rail transit sensors are mainly based on temperature detection with axial (Z-direction) vibration, and vibration signals in other directions (X, Y directions) cannot be taken into account; due to the lack of vibration signals in other directions, they cannot be fully detected Troubleshooting of locomotives. Contents of the invention [0003] The object of the present invention is to provide a three-axis vibration-temperature compound rail transit sensor capable of detecting vibration signals in three directions of X, Y, and Z, and capable of detecting temperature, which is more conducive to comprehensively judging the fault condition of the locomotive. [0004] In order to realize the purpose of the above invention, the three-axis vibration temperature composite rail transit sensor o...

AI Technical Summary

Problems solved by technology

[0002] Existing rail transit sensors are mainly based on temperature detection with axial (Z-direction) vibration, and vibration signals in other directions (X, Y directions) cannot be taken into account; due to the lack of vibration signals in other directions, they cannot be fully detected Troubleshooting of the locomotive

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