Ultrasonic level meter and ultrasonic level meter control system

Abstract

The embodiment of the invention discloses an ultrasonic level meter and an ultrasonic level meter control system, and the ultrasonic level meter comprises a sensor module, a processor module, a two-wire system Ethernet communication module and an Ethernet interface; the processor module is connected with the sensor module and the two-wire system Ethernet communication module, and the Ethernet interface is connected with the two-wire system Ethernet communication module and the Ethernet. In the embodiment of the invention, the two-wire system Ethernet communication module is arranged, so that the ultrasonic level meter can realize high-performance and long-distance full-duplex data transmission on the Ethernet through a pair of twisted pairs; besides, the ultrasonic level meter can be conveniently integrated into the existing Ethernet environment in the measurement process, no additional gateway or interface is needed, the ultrasonic level meter is rapid and convenient to install, transparent connection with any IT network can be achieved, one-network-to-bottom and interconnection and intercommunication between the upper layer and the bottom layer can be achieved, the complexity of equipment building during industrial field measurement is reduced, and the measurement efficiency is improved. And the data transmission efficiency is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of instruments and meters, and in particular, to an ultrasonic level gauge and an ultrasonic level gauge control system. Background technique [0002] Ultrasonic level meter is a primary instrument commonly used in industrial sites, a basic unit in an industrial control system, and the cornerstone for the normal operation of the entire control system. The ultrasonic level meter is installed on the upper part of the container. Under the control of the electronic unit, the probe emits a beam of ultrasonic pulses to the object to be measured. The sound waves are reflected by the surface of the object, and part of the reflected echoes are received by the probe and converted into electrical signals. The time from ultrasonic transmission to re-reception is proportional to the distance from the probe to the object to be measured. The electronic unit detects the time, and calculates the measu...

AI Technical Summary

Problems solved by technology

Traditional 4-20mA current loop technology and digital current loop technology such as PA / FF have the advantages of strong anti-interference ability, long transmission distance, and support for two-wire power supply, etc., but they belong to dedicated communication technology and need to be connected to Ethernet through a gateway; ordinary 10M / 100M Ethernet technology can realize one network from the top layer to the bottom layer and interconnection, but it can only realize data transmission within a range of 100 meters, and at least 4 wires are required, which does not conform to the two-wire power supply habit commonly used in industrial sites

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