It is possible to program the destination of the data (ASCII format via FTP protocol) to one or more independent servers. Furthermore, it is possible to program the instrument to send data by MQTT protocol to an MQTT Broker
server. Alpha-Log can simultaneously use two communication devices and automatically choose the best option according to the availability of the signal, thus optimizing communication and its cost.
Alpha-Log can adjust the data communication rate to FTP servers according to alarm situations. For example it is possible to increase the communication rate when the intensity of the rain is greater than a certain programmable
Data communication (via Modbus protocol)
It is possible to send data to Modbus Master devices via RS232/485 using Modbus-RTU protocol, and via Ethernet using Modbus-TCP protocol. Data can concern the instantaneous values, but also mobile or current statistical values.
Alpha-Log has n.3 electrical outputs that can be activated using configurable logics depending on the data acquired. These outputs become Relay outputs using appropriate external modules.
SMS, Email and MQTT notifications
Alpha-Log, according to the configured logics, sends notifications by the following means:
- SMS: It is possible to set SMS messages and distribution lists
- Email: It is possible to set distribution lists and messages that will be sent via email. The email contains the file containing the data that generated the event
- Telegram: Alpha-Log can be programmed to send data to a Telegram server, from which the programmed users are conveyed.
Telegram is a free "cloud based" instant messaging application. Pluvi-ONE, during each available communication, sends the data (via MQTT protocol) to an MQTT broker server managed by LSI LASTEM on which a Telegram service is
installed. The LSI LASTEM Broker exchanges data with the Telegram server, this server sends the information to subscribers who have requested the type of available data.
The service foresees that every single user or group,
protected by password, can request a series of data from to Alpha-Log:
- Instant values
- Last period data
Furthermore, the user can configure a series of alarms that will be notified to him in case of occurrence. The configured service ensures the protection of the data of each individual station and their disclosure only to defined users.
Integrated absolute pressure sensor
Alpha-Log mounts an integrated absolute pressure sensor, having 500÷1100 hPa range and ±0,25 hPa (-20÷85°C) accuracy.
The Alpha-Log configuration setup is implemented through the 3DOM program on PC. Once the configuration file has been created, it can be sent to an FTP server of LSI-LASTEM (or other). Alpha-Log is programmed to regularly check if a
new version of the file is present on this server; if so, it is loaded into the Alpha-Log memory. The file can also be saved to a pen drive and loaded, via the USB port, into the instrument.
Alpha-Log can update its firmware when connected to the Internet. The latest firmware version is available on the LSI LASTEM FTP server. Alpha-Log regularly checks if a new version is available, and in this case, it downloads the file on its
system memory. The firmware update can also be done locally via USB pen-drive.
The internal clock (accuracy 1 min / month) can be updated through NTP (Network Time Protocol) whenever Alpha-Log activates an Internet connection.
Alpha-Log has the following peripherals:
- N.2 RS232 ports,
- N.1 RS485 opto-insulated port
- N.2 USB ports,
- N.1 Ethernet port.
Display and leds
Alpha-Log is equipped with a back-lit LCD display (4x20 chrs). The display shows the following information:
- List of real-time measurements
- Last 20 alarms and errors,
- Statistics of communication,
- System info / reset / date-time,
- Battery status,
- IP address,
- Memory and system status,
- Actuator status,
N.3 leds are also activated to define different operative modes
Alpha-Log can be equipped with an IP camera to send images to a dedicated server. The camera is connected to the same Router used by Alpha-Log for data communication and is turned on and off using the programmable output
logics, so as to increase / decrease the number of images according to the programmed events and reduce the system's electrical consumption and communication costs.
Alpha-Log is powered using 6÷30 Vdc and can charge, via a solar panel or main power supply, an external Pb battery using its integrated regulator. LSI LASTEM supplies IP boxes with power supply systems.
Power consumption and battery life
The average power consumption is < 2 mA (display OFF and without using RS485)
Power consumption using 3G modem and sensors without power, display OFF.
| Communication rate||Power consumption (average) |
| 1 com/day|| 60 mW|
| 1 com/hour|| 600 mW|
Power consumption in days using 3G modem and sensors without power, display OFF, starting from fully charged batteries and in the absence of sun.
| Communication rate|
| Battery size||9 Ah ||15 Ah ||40 Ah |
| 1 com/day|| 100||150||400 |
| 1 com/hour|| 7||10 ||30 |
The data acquired by Alpha-Log are sent to FTP servers for their management with non-LSI LASTEM applications. It is however possible to receive data on a PC, in order to use the LSI LASTEM management programs that use the SQLGidas database as their database. When the data is saved on the SQL-Gidas database, it can be managed with LSI
LASTEM software applications that use this type of database. There are two possibilities:
- Through the 3DOM program: data downloading (in manual mode) from a specific FTP area (where Alpha-Log has sent its data) and saving them to a TXT file or SQL-GIDAS database for further uses using LSI-LASTEM’s PC programs.
- Through the P1-CommNET program (BSZ309): data downloading (in automatic and continuous mode) from a specific FTP area (where Alpha-Log has sent its data) and saving them to a TXT file or SQL-GIDAS database for
further uses using LSI-LASTEM’s PC programs.