Main Catalogue >> Construction Industry >> Construction Site >> Smart Concrete Curing Device
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Last update: 01-04-2024
buy on Tindie.com.
Status:
Hardware electronics are Fully tested and working. The first 🥇 release of the firmware code is now available.
Looking for someone available to collaborate on the firmware coding. If you like this project and want faster development, prototyping, and testing consider a donation or sponsoring. thank you 🙏.
this hardware electronics is "CE Ready" meaning it is ready to get a CE marking. To learn more about this marking go to Wikipedia here.
The problem
Currently, there are commercial solutions for this smart device, for instance, Maturix smart solution and also Giatech's smart solution. Both Cloud-based. And this is a limitation.
The Ideia
This smart device is able to do active monitoring of fresh concrete at any construction site to determine accurately the concrete strength in pre-determined time intervals. This gives an advantage to a construction site team, as is able to accurately know the exact day the concrete structural element can have formworks removed and this saves time and money. The one available here on GitHub can be customized to function without the need for a cloud server, and instead provide the information on the smart device display only. It can also be configured to do measurements upload to a local server located inside the construction site.
Alternatively, when is required LIVE remote access to the concrete data, this smart device is capable of LIVE data measurements with a unique FingerPrint ID (more info here) and upload directly to an open data repository, such as a dataverse. This is an important feature when considering, for instance, casess of legal dispute of concrete quality.
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This repo contains instructions on how to assemble a smart PCB able to monitor Fresh Reinforced concrete Hardening to determine concrete maturity and estimate its strength. The smart PCB is a 12-bit smart DAQ. The Kicad project files can be downloaded on this repository. Those who prefer buying already assembled, ready to deploy and do live monitoring at a construction site can buy at my Tindie store.
Nowadays there are many sensors that can be connected for this monitoring task. The most common for this kind of application are the Sensorion SHt3x, and the Maxim Integrated DS18B20 (see part list below).
This smart device has the ATSHA204A chip a SHA-256 high-security hardware authentication IC for secure and unique data exchange and communication between the smart DAQ and the Edge server.
Interactive view of the PCB Layout
Interactive view of the circuit schematic
Click to view the latest revision
The proposed assembly solution utilizes a LiPo 2000mAh battery and is able to monitor, in regular intraday intervals, and send data to a nearby edge server using WIFI or Bluetooth BLE for more than one month without requiring a recharge. Other smart device setup solutions are possible. For instance, the one with a LiPo battery is suitable for embedding the smart device inside the concrete element itself one wants to do monitoring. Is also possible to embed the sensor probe into the fresh concrete while the smart DAQ enclosure is placed at the surface of the concrete element. Depending on power availability the smart DAQ has a built-in micro USB plug able to connect to any USB smartphone or tablet charger.
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2x Channel Ports
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1x ADC Channel - it can connect to the DS18B20 temperature sensor sold on AliExpress
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Advanced Power Management
- 2x Connectors for 4.2V Lithium Polymer Batteries
- 1x 5.0V USB-C connector
- Power level meter
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Connectivity
- Wireless 2.4 GHz (WIFI, Bluetooth, Zigbee, Matter, etc )
- Data Fingerprint ID for communications
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USB-C connection
- for firmware updates / upgrades
- installation of a custom firmware possible ( tunning)
- for local troubleshooting or errors on the device
The Smart Construction Device can connect to all kinds of sensors. For instance:
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The DS18B20 Temperature sold on AliExpress
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Built-in motion sensor, to alert if anyone moves or touches the device
- ExpressIF single core XTensa LX7 microcontroller (ESP32 C3)
- Fingerprint ID technology for validation of concrete data with increased trustworthiness. More information can be found here.
- Power consumption of only 60nA when on standby
- USB-C connectivity with Serial UART
- 2.4GHz Wireless Radio (WWIFI, BLutooth and all others)
- this hardware electronics is "CE Ready" meaning it is ready to get a CE marking
Fully working.
[May 7, 2023] - The firmware 1.0.14 for Over the Air Updates is now released to the public. Goto the releases section to learn more.
[May 2, 2023] - The firmware 1.0.8 for Over the Air Updates is now released to the public. Goto the releases section to learn more.
[April 26, 2023] - The firmware 1.0.6 for Over the Air Updates is now released to the public. Goto the releases section to learn more.
The OEM version of the firmware code can be found in the folder firmware code. It has by default OTA updates, meaning the smart concrete curing device automatically updates itself when newer updated versions are made available here.
This code uses my own ESP32 C++ class libraries to expedite the development of code for ESP32 microcontrollers. The repository is located here for anyone to use.
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To all those not into electronics and still liked and want to own any of the listed PCB for smart devices can buy the PRO version on Tindie ready to install and use. |
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Check the wiki above for detailed instructions on:
- how to assemble one smart PCB concrete maturity device
- How to buy one on Tindie
- How to install the firmware code
- How to use it at any construction site.
- & more...
In real life this smart DAQ is able to:
- Can be powered using a 2-wire LiPo battery with a JST connector or by Micro USB
- Connect to all kinds of I2C Temperature and Humidity sensors;
- Do temperature and humidity compensation on all measurements
- Has a motion sensor to know if anyone moved the smart device from its place
The PCB Files can be found on the web interactive viewer. Links below.
Interactive view of the PCB Layout
Interactive view of the circuit schematic
Click to view the latest revision
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