Drainage System

The outdoor battery-powered telemetry terminal integrates 4G and NB-IoT telemetry modules to realize data collection, remote transmission, analysis and calculation, and over-limit alarm. It has the characteristics of low power consumption and IP68 waterproof. It can be adapted to various sensors such as water level, water temperature, and water quality. The terminal is equipped with a battery, which is especially suitable for monitoring sites with no power supply conditions and high requirements for waterproof and dustproof. It can be used in a variety of occasions: pipe network monitoring, groundwater monitoring, field monitoring, etc.

The universal battery-powered telemetry terminal is an intelligent device based on 4G, 5G, and NB-IoT networks for data collection, remote transmission, analysis and calculation, and over-limit alarm. It has the characteristics of low power consumption and IP68 waterproof. It can be adapted to various sensors such as water level, water temperature, and water quality, and has a dual-interface design (expandable). The terminal is equipped with a large-capacity battery and is particularly suitable for monitoring sites with no power supply conditions, high frequency of data reporting (high real-time requirements), and high requirements for waterproof and dustproof.

Intelligent Manhole Cover Remote Data Logger: the equipment terminal integrates inclination detection sensor, GPS/Beidou positioning module, and wireless communication module, which can detect the current inclination angle of the manhole cover. When the manhole cover moves abnormally, an alarm is triggered, and the alarm information is sent to the cloud platform through the wireless network, supporting timed reporting and automatic wake-up of abnormal movement. The terminal interface can be expanded to connect liquid level, gas and other monitoring sensors to monitor events such as manhole cover being opened, displacement, manhole cover being immersed in water, and harmful gas exceeding the standard. Suitable for manhole covers of various purposes and materials.

Solar intelligent manhole cover, the manhole cover surface is embedded with a solar power supply system), no need to replace batteries; at the same time, the antenna is embedded on the outside of the manhole cover, which effectively solves the problem of poor underground communication. It can monitor and warn the status of underground equipment and manhole covers, remotely monitor the underground water level data and the safety status of the manhole cover of the drainage network inspection well in real time, and report to the monitoring center, timely discover the abnormality of the manhole cover and the liquid level, etc., and solve the problems of wet and flooded underground monitoring environment, power supply difficulties, and poor communication.

The static pressure level gauge is a submersible level gauge. It is based on the principle that the static pressure of the liquid measured by the pressure sensor is proportional to the height of the liquid. It uses advanced isolated diffused silicon sensitive elements or ceramic capacitor pressure sensitive sensors to convert static pressure into electrical signals, which are then converted into standard electrical signals (generally 4-20mA/1-5VDC) after temperature compensation and linear correction. It is widely used in water level monitoring fields such as urban water supply and drainage, sewage treatment, groundwater, reservoirs, rivers, and oceans.

Air ultrasonic level meter uses the device to transmit ultrasonic pulse signals, which are reflected by obstacles. The receiving device receives the reflected signals, analyzes the time difference between the transmission and the echo, and calculates the change of the liquid (object) level in combination with the ultrasonic propagation speed. It has the function of automatic temperature compensation, non-contact measurement, high precision, simple installation and maintenance.

Uses lens antenna radar sensor, operating frequency 60GHz, and uses continuous wave measurement. It has the characteristics of corrosion resistance, high precision, low power consumption, and strong anti-interference ability. Integrated intelligent water level tracking and identification algorithm, can filter out fixed interference echoes and multipath interference, and has intelligent perception of unstable measurement errors caused by pole shaking, bridge deck shaking, water surface fluctuations, etc., and performs intelligent optimization compensation, and the measurement results are accurate and reliable.

A dual-level mutual calibration water level measurement system (dual-channel full-range level gauge) developed based on the independent intellectual property calculation model. The dual-channel design ensures that there are no blind spots in various working conditions, and can also achieve accurate measurement under harsh working conditions (such as uneven density, surface debris, etc.). The intelligent algorithm has the functions of automatic identification and switching and elimination of abnormal data, and real-time dual-level mutual calibration. When a value jumps or abnormal values appear, the system automatically calculates to ensure data accuracy. The equipment uses static pressure and ultrasonic data as backup to ensure the online rate of the equipment.

Uses horn lens antenna radar sensor, working frequency 120GHz, adopts FMCW frequency modulation continuous wave measurement principle, built-in RTU module and lithium sub battery. It has the characteristics of corrosion resistance, high precision, low power consumption, strong anti-interference ability, etc. Integrated intelligent water level tracking and identification algorithm, can filter out fixed interference echo, multipath interference, intelligent perception of pole shaking, bridge deck shaking, water surface fluctuations and other causes of unstable measurement errors, and intelligent optimization compensation, the measurement results are accurate and reliable. Suitable for manholes, sewers, storage tanks and other scenes.

The buried waterlogging monitor is based on the principle of underwater ultrasonic level measurement. It uses the time difference between the emission of sound waves and the reception of the water surface echo to obtain the current liquid level height, realizes water immersion detection and liquid level collection, and monitors the waterlogging situation on the road. It consists of a stainless steel shell, a water level detection module, a Bluetooth module, a GPRS/4G/NB-IoT/LORA wireless communication module, a battery, etc. Developed based on the characteristics of urban waterlogging, it has a compact size and can be buried in the road surface to achieve waterlogging monitoring.

Ultrasonic Doppler flowmeter uses ultrasonic Doppler principle for measurement. It uses a combined wedge sensor to measure flow rate based on the continuous Doppler principle. The sensor has two built-in piezoelectric crystals, which are used for ultrasonic signal transmitter and receiver respectively. At the same time, the sensor integrates static pressure liquid level measurement and temperature measurement, and automatically compensates for the influence of temperature on sound velocity. It is widely used in flow measurement in urban drainage systems, rivers, ditches and other scenarios.

Wedge-shaped electromagnetic flowmeter (mouse-type electromagnetic flowmeter), an electromagnetic induction flow velocity sensor based on the PDC pulse DC principle, can measure the velocity and flow rate of full pipe flow/partial pipe flow in combination with liquid level measurement. The velocity sensor adopts a spike electrode design, which can effectively reduce the contamination of the electrode. The wedge-shaped electromagnetic flow velocity sensor is installed at the bottom of the channel in an immersed manner. When the fluid conductivity is above 10µS/cm, this product can be used to measure the fluid velocity/flow rate, even if the pipe flow is not full/open channel.