Solar powered wireless 4G liquid level gauge water level control display transmission Sensor Mobile remote monitoring alarm M...

https://zhuanlan.zhihu.com/p/2015471232980637007
As a professional provider of IoT data acquisition solutions and an expert in industrial IoT data acquisition, the editor of Shanghai Data Acquisition IOT Technology Co., Ltd， (daq-iot) hereby presents the following introduction, and sincerely welcomes discussions and exchanges.
Supported Communication Interfaces: CAN, RS485, Mbus, 4–20mA, Profibus, CC-Link, HART, digital I/O, etc.
Industrial Protocols: Modbus RTU/TCP, HJ212, IEC104, DLT645, DLMS, IEC61850, MQTT, etc.
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As a professional provider ofIoT,Data Acquisition, andsolution,Industry IoTData Acquisition expert (professional account), Shanghai DAQ-IoT website editor daq iot, would like to introduce the following content here and sincerely welcome everyone to discuss and exchange ideas.
Can handle common communication interfaces such as CAN/RS485/Bus/4~20mA/Profibus/CC Link/HART/IO switch values, etc
Industry Protocol: Modbus RTU TCP/HJ212/IEC104/DLT645/DLMS/IEC61850/MQTTwait
As a professional provider of IoT data acquisition solutions and an expert in industrial IoT data acquisition, the editor of Shanghai Data Acquisition IoT (daq-iot) hereby presents the following introduction, and sincerely welcomes discussions and exchanges.
Supported Communication Interfaces: CAN, RS485, Mbus, 4–20mA, Profibus, CC-Link, HART, digital I/O, etc.
Industrial Protocols: Modbus RTU/TCP, HJ212, IEC104, DLT645, DLMS, IEC61850, MQTT, etc.

Preface
Welcome to DAQ-GP-TTL4G/LoRaWAN/WiFi solar wireless liquid level Sensor (hereinafter referred to as "Sensor"). This product is an intelligent monitoring device launched by Protocol Network Technology Co., Ltd., which integrates solar power supply, wireless transmission, and high-precision liquid level detection. It supports multiple communications such as MQTT and HTTP, and can be used through Protocol API interfaceDocking with third-party platforms to remotely view liquid level data on mobile phones and computers,Real-timeis widely used for liquid level monitoring in various scenarios such as reservoirs, water tanks, wells, chemical storage tanks, agricultural irrigation, etc. It does not require complex wiring, is easy to install, energy-saving and environmentally friendly, effectively solving the pain points of traditional liquid level monitoring wiring difficulties and inconvenient power supply.
Please read this manual carefully before using this product to fully understand its functions, installation methods, operating specifications, and precautions, in order to ensure the normal, safe, and stable operation of the product. The content of this manual will be continuously updated based on product iterations. If you have any questions or suggestions during use, please contact our after-sales service personnel.
1. Product Overview
1.1 Product Introduction
DAQ-GP-TTL4G/LoRaWAN/WiFi Solar Wireless Liquid Level Sensor adopts a high-precision liquid level detection chip, combined with an efficient solar power supply module and 4G/LoRaWAN/WiFi wireless communication technology, which can collect liquid level data from monitoring points and transmit the data to the cloud platform through MQTT or HTTP Protocol. It supports API interface calling and easily interfaces with various third-party monitoring platforms, PLC systems, or proprietary management platforms. Users can remotely log in to the platform through mobile apps or computer web pages, and view liquid level data, historical curves, and alarm information throughReal-time, achieving unmanned remote liquid level monitoring and management.
This product is equipped with a large capacity lithium battery and an efficient solar charging panel, which can achieve all-weather autonomous power supply and is suitable for outdoor scenes without mains power supply; Capable of waterproof, dustproof, and anti-interference, able to adapt to harsh industrial and outdoor environments, ensuring the stability and reliability ofData Acquisitionand transmission. The principle of liquid level detection is based on the piezoresistive effect, using a Wheatstone bridge on a diffused silicon wafer. The measured liquid is pressurized to cause a change in the resistance value of the bridge wall, generating a differential voltage signal. This signal is then converted into a standard digital signal by a dedicated amplifier, and accurate liquid level data is calculated based on the proportional relationship between the liquid level and pressure coefficient.
1.2 Core Functions
High precision liquid level detection: using imported detection chips, with high measurement accuracy and small errors, it can accurately capture subtle changes in liquid level and meet the monitoring needs of different scenarios.
Multiple Protocol supports: compatible with MQTT and HTTP communication Protocol, and can choose the appropriate transmission Protocol according to actual needs, adapting to different cloud platforms and systems. Among them, MQTT Protocol adopts a lightweight design, low bandwidth consumption, supports long connections, heartbeat detection, and disconnection reconnection mechanisms, and Real-time has strong performance; HTTP Protocol is based on the request/response model and is adapted to traditional network transmission scenarios.
API interface docking: Provides standard API interfaces, supports third-party platforms and proprietary system docking, can achieve custom functions such as data synchronization and instruction issuance, and flexibly adapts to various monitoring systems.
Remote data viewing: Supports remote login through mobile apps and computer web pages. Real-time can view liquid level data, historical data curves, and alarm records, and monitor monitoring status anytime, anywhere without the need for on-site monitoring.
• Self powered by solar energy: Equipped with high-efficiency solar charging panels and large capacity lithium batteries, it can automatically recognize day and night, achieve daytime charging and nighttime endurance, without the need for external mains power, energy-saving and environmentally friendly, suitable for outdoor scenarios without power supply.
• Alarm reminder function: The upper and lower limit alarm thresholds for liquid level can be set. When the liquid level exceeds the threshold, the device will automatically trigger an alarm and push the alarm information through the platform, mobile SMS (optional), and other methods to remind users to handle abnormalities in a timely manner.
Anti interference and protection: It has strong anti electromagnetic interference ability, and the shell adopts waterproof and dustproof design with high protection level, which can adapt to long-term stable operation in harsh environments such as outdoor and industrial environments.
Low power design: Using low-power chips and intelligent sleep mechanism, while ensuring data transmission reliability, it reduces device power consumption and extends the service life of lithium batteries.
1.3 Applicable Scenarios
This product is widely used in various scenarios that require liquid level monitoring, including but not limited to:
Water conservancy and hydropower: liquid level monitoring of reservoirs, rivers, lakes, wells, pumping stations, etc;
Urban water supply: water tank of water plant, secondary water supply tank, pipeline level monitoring;
Industrial production: liquid level monitoring of chemical storage tanks, petroleum storage tanks, reaction vessels, sewage tanks, etc;
Agricultural irrigation: monitoring of liquid levels in reservoirs, irrigation channels, wells, etc. to assist in irrigation scheduling;
Environmental monitoring: liquid level monitoring of sewage plants, sewage treatment tanks, rainwater collection tanks, etc;
Other scenarios: liquid level monitoring of fire water tanks, landscape water tanks, aquaculture water tanks, etc.
2. Technical parameters
| | | |
| --- | --- | --- |
| parameter name | parameter value | Remark |
| Product Model | DAQ-GP-TTL4G/LoRaWAN/WiFi | Solar wireless liquid level Sensor |
| measurement range | 0-5m、0-10m、0-20m、0-50m | Customizable for other ranges |
| measurement accuracy | ±0.5%FS | FS is at full scale |
| resolution | 0.1mm | Slightly adjusted according to the scale |
| communication method | 4G/LoRaWAN/WiFi (all network) | Support 4G/LoRaWAN/WiFi networks from China Mobile, China Unicom, and China Telecom |
| Support Protocol | MQTT、HTTP | Other Protocol can be expanded according to needs |
| API interface | Standard RESTful API | Support GET/POST requests for easy integration with third-party platforms |
| power supply method | Solar powered (with lithium battery) | Solar panel power: 5W/10W (optional); Lithium battery capacity: 10000mAh/20000mAh (optional), supports overcharge and over discharge protection |
| endurance | Can work continuously for 7-15 days in a sunless environment | According to the slight difference in data upload frequency, the lower the upload frequency, the longer the battery life |
| Data upload frequency | 10s-24h customizable | Default 5 minutes/time, adjustable through platform or API |
| Protection level | IP67 | Waterproof, dustproof, and resistant to short-term immersion |
| Operating Temperature | -20℃~+60℃ | Suitable for most outdoor and industrial environments |
| Operating Humidity | 0~95% RH (no condensation) | Avoid prolonged exposure to high condensation environments |
| Installation Method | Investment type, wall mounted type | According to the on-site scene selection, default input type |
| | | |
| alarm method | Platform alarm, mobile app push, SMS alarm (optional) | Can set upper and lower limit alarm thresholds for liquid level |
3. Product structure and installation
3.1 Product Structure
DAQ-GP-TTL4G/LoRaWAN/WiFi solar wireless liquid level Sensor is mainly composed of the following components, and the functions of each component are as follows:
• Liquid level detection probe: core detection component, using high precisionDiffused silicon chipDirectly contact the measured liquid, collect liquid level pressure signals and convert them into electrical signals, and connect them to the central control unit through I/O pins.
Solar charging panel: absorbs solar energy, converts light energy into electrical energy, charges lithium batteries, and provides working power for equipment, with automatic charging protection function.
Lithium battery: Equipped with a large capacity lithium battery, it stores the electrical energy converted by the solar charging panel and provides power to the device in a sunless environment, supporting overcharging