Vibration and temperature integrated sensor based on two-wire system analog signal transmission

Abstract

The invention provides a vibration and temperature integrated sensor based on two-wire system analog signal transmission, which comprises a sensor and a data acquisition device, each of the sensor and the data acquisition device is provided with an IEPE interface, each IEPE interface is connected with a two-wire system coaxial cable, and the sensor and the data acquisition device are connected through the two-wire system coaxial cable. The sensor is provided with a vibration sensitive device and a temperature sensitive device; the two-wire system coaxial cable is provided with two wires which are respectively a signal power supply positive connection wire and a signal power supply negative connection wire. The number of cable cores of the signal cable can be reduced, the cable diameter is reduced, the influence of the cable weight on the frequency response range of the vibration sensor is reduced, the analog signal does not influence the signal bandwidth, and the cable cost can be remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a vibration and temperature integrated sensor based on two-wire analog signal transmission. Background technique [0002] Vibration and temperature sensors, as important tools for the health diagnosis of mechanical equipment, play an increasingly important role in industrial production. The integrated vibration and temperature sensor is more and more popular among engineers due to its high integration and convenient installation. of attention. However, most of the traditional vibration and temperature integrated sensors are three-wire, four-wire analog signal transmission or two-wire digital signal transmission. [0003] The three-wire analog signal vibration and temperature integrated sensor mainly consists of three wires: vibration (power) signal positive, GND and temperature signal output. The built-in vibration sensor part adopts the traditional IEPE interface, that is, the ...

AI Technical Summary

Problems solved by technology

[0006] The invention solves the problems that the existing integrated vibration and temperature sensors are bulky, cannot transmit original data and needs additional power supply cables, and proposes a vibration and temperature integrated sensor based on two-wire analog signal transmission, which can save the wires of signal cables. The number of cores reduces the wire diameter and the influence of cable weight on the frequency response range of the vibration sensor. The analog signal does not affect the signal bandwidth and can significantly reduce the cable cost.

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