Battery-powered liquid level monitoring terminal for long and narrow pipeline wall-attached installation

Abstract

The invention provides a battery-powered liquid level monitoring terminal for long and narrow pipeline wall-attached installation, and relates to the technical field of electric liquid level monitoring. The liquid level monitoring device comprises a main housing. An upper cover is fixedly installed on the top of the main housing; a first O-shaped ring is connected between the upper cover and the main housing in a sealed mode; and a coaxial cable socket is fixedly installed at the bottom of the main housing, and the coaxial cable socket is used for being connected with an antenna. The battery-powered liquid level monitoring terminal is in low-power-consumption design, adopts a battery to power, is suitable for commercial power-free environments, improves distance measuring range and the corrosion resistance of an ultrasonic sensor, has a compensation for environment temperature, widens the application range of the terminal, has wider applicability to various monitoring environments, andimproves the anti-interference performance of terminal liquid level monitoring; and the terminal has a low-power-consumption ultrasonic sensor anti-condensation function, so that the use of the terminal is not limited by seasons and environments, the effectiveness and the accuracy of terminal liquid level monitoring are better improved, and the terminal is more flexible in field implementation.

Description

technical field [0001] The invention relates to the technical field of electric liquid level monitoring terminals, in particular to a battery-powered liquid level monitoring terminal for wall-mounted narrow and long pipelines. Background technique [0002] Solution 1 of the existing technology: by selecting a separate liquid level distance measuring device and cooperating with a data remote transmission terminal (DTU), functions such as liquid level monitoring, data collection, early warning, and alarm are realized. These liquid level ranging devices mostly use ultrasonic sensors or millimeter radar wave sensors. This type of solution has two major drawbacks. First of all, the original intention of these devices is to meet the industrial environment, usually need to be connected to 12-24V DC power supply or 4-20mA The standard signal is used as a power supply, and the distance measurement method is continuous measurement. The terminal is not designed for low power consumptio...

AI Technical Summary

Problems solved by technology

These liquid level ranging devices mostly use ultrasonic sensors or millimeter radar wave sensors. This type of solution has two major drawbacks. First of all, the original intention of these devices is to meet the industrial environment, usually need to be connected to 12-24V DC power supply or 4-20mA The standard signal is used as a power supply, and the distance measurement method is continuous measurement. The terminal is not designed for low power consumption, resulting in high power consumption. It is not suitable for an environment without mains power. Satisfied, the shorter battery replacement cycle also brings a significant increase in use and maintenance costs

Secondly, both the liquid level distance measuring device and the data remote transmission terminal (DTU) have a certain volume, and it is difficult to install in the environment of narrow and long pipelines

[0003] Existing technical solution 2: The battery-powered integrated liquid level monitoring remote transmission terminal mostly uses ultrasonic sensors as distance measuring components. Due to factors such as battery capacity, sensor technology, and terminal battery life, the liquid level monitoring of the terminal The measuring range is short, usually about 5m. In addition, this type of terminal is not optimized for the narrow and long pipeline environment and the wall-mounted installation method, and it is easy to be interfered and cause inaccurate distance measurement.

[0004] In addition, the above two solutions have the following disadvantages: 1. The surface of the ultrasonic transducer is easy to corrode, which leads to inaccurate distance measurement, reduced trouble-free working time of the terminal, and increased maintenance costs. 2. Cannot solve the problem of condensation on the ultrasonic sensor The impact of distance measurement. When condensation gathers on the surface of the ultrasonic sensor transducer, the tension of the liquid hinders the transmission of ultrasonic waves or reduces the sensitivity of the ultrasonic sensor. As a result, the ultrasonic sensor can only detect short distances and report The value of the blind zone can only be maintained by self-disappearing condensation or manually wiping the surface of the ultrasonic transducer, resulting in the inability to measure distance correctly during the condensation on the surface of the ultrasonic sensor of the terminal, and increasing maintenance costs

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