Wireless Rain Gauge Data Breakpoint Resume Solution

 

Project Background

One of our customers bought a rain gauge, and the data collected were directly transmitted to the cloud platform via wireless gateways. All is fine during most of the time, while during periods without network signals, since his place is remote, the rainfall data collected cannot be uploaded in real-time. Furthermore, the lack of local storage leads to permanent data loss.

He says, “The cellular network in our area is not stable, often no signal coverage. During offline, our system not able to keep the data.”

He asks, “When signal returns or the device restarts, can any stored data be uploaded on an hourly basis instead of being accumulated into a single spike in last hour? Because device records cumulative rainfall, missing hourly records make data biased.”

Solutions

We recommend him using our wireless meter with his rain gauge. The wireless meter is an explosive- and water-proof meter with a big local display. It supports 4G or LoRa network. By using this solution:

During no signal period: we can realize local storage of rainfall gauge data to ensure no data loss, with a storage capacity of 500 records; achieve data retention during no-signal periods through the local storage of the wireless Meter.

After signal recovery: It automatically triggers breakpoint resume to upload historical data stored during the no-signal period to the background system in chronological order of timestamps, ensuring data continuity and seamless connection with real-time uploaded data.

Compatibility: The meter is compatible with existing rainfall gauge without the need for large-scale modification of existing equipment.

Stability: The solution ensures that locally stored data is not lost or tampered with, and that the breakpoint resume process is stable.

Design Concept

The core of this solution is to change the connection from “Rainfall Gauge and Wireless Gateway” to “Rainfall Gauge and Wireless Meter.” The meter assumes the three core functions of “Data Collection – Local Storage – Breakpoint Resume,” replacing the original architecture of “Rainfall Gauge directly connected to Gateway.” The meter communicates directly; when there is no signal, data is temporarily stored in the local storage module. After the signal is restored, it automatically identifies the breakpoint, completes the supplementary upload of historical data according to timestamp priority, and then synchronizes the upload of real-time data to ensure that the data is not lost or interrupted throughout the entire process.

Overall Architecture

Rainfall Gauge → Wireless Meter (Collection + Storage + Communication) → Cloud Platform.

The rainfall gauge is connected via an RS485 interface, and the wireless meter receives the data collected by the rainfall gauge in real-time.

The rainfall gauge and the meter use external power supply simultaneously or the rainfall gauge uses external power supply, and the meter uses internal battery power supply.

Additional Features

Besides, the meter can be connected to various different sensor signal collections. By assigning different protocol addresses during setting, multi-signal collection and transmission can be performed.

Now, he has applied this solution and is quite satisfied with the test result.

If you need any solutions, just let us know. We can customize for you.