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The LNS station station responds to a need to measure data related to natural hazards, water management, etc. It is integrated into a measurement system that contains two structural elements:
The LNS has multiple functions: powering the sensors if they do not have their own power supply, retrieving their data at fixed or variable time steps, recording them, processing them, sending them back to the user, etc.
The possible treatments via the LNS are very diverse and depend on the field of application: change the units, apply certain equations, apply scaling...
In water measurement for example, a water level sensor will retrieve the value of the water level above it. The LNS will reference this value in a levelled geographical system. It will retrieve the measurement and format it according to the user's needs.
Once it has acquired and processed the data, the LNS can transmit it externally or store it until the user comes to retrieve it. It can also use this data to activate alarms or send alerts, according to certain thresholds.
The LNS acquisition station has been designed for recording and transmitting water level measurements in the context of hydrometric stations. It allows measurements to be taken at regular intervals, particularly for Vigicrues-type networks, groundwater monitoring networks, etc.
In this application, the LNS retrieves the water level at a fixed time step, records it, and sends alerts according to thresholds (in case of low water or flooding for example); it can also produce chronicles of the evolution of the water level, of the temperature, or of another data according to the chosen sensors
The LNS is also used in the field of geotechnics: it can be used to monitor ground movements and potential block falls.
Depending on the sensors connected to it, the LNS can also be used to measure water quality, suspended solids in water, etc. The applications are numerous.
The LNS is a multi-protocol, multi-sensor station. Of course, it can be easily adapted to all PARATRONIC sensorsThe LNS can be adapted to the vast majority of sensors on the market.
Indeed, the LNS uses open standards: 4-20mA analogue input, SDI-12, RS485, Modbus, RS232, logic inputs and outputs...
The LNS is a multi-protocol station, and this is also the case for its transmission: depending on the chosen media (wired connections, 2G, 3G, 4G, radio, satellite...), the LNS can use various transmission protocols. This allows for greater flexibility depending on the networks available on the site, the media you prefer to use, or specific recommendations on a sensitive site where security is important.
The LNS has a low power consumption, which allows it to be installed in totally isolated areas, where there is no electrical connection. The LNS station can operate only on batteryor on solar panel.
This low power consumption is due to the on-board electronics, but above all to the multiple adjustment possibilities which allow the power supply of sensors, etc. to be finely managed. modems In short, the LNS allows the hardware to be powered only when it is needed. By playing with the configuration, you can manage your energy perfectly and reduce your consumption to the minimum necessary, which allows you to considerably reduce your energy bill and to use your installation in isolated locations.
The installation of the LNS depends mainly on the type of application. In general, the LNS is an acquisition station in the form of a ready-to-use" enclosure. This electrical cabinet can be mounted on rails.
Once the station is installed, each sensor is wired to its dedicated input: analogue, digital or logic. As for the power supply, the station can be supplied alone, or integrated in one of the 3 different versions of the box, depending on the power supply:
- a stand-alone box with a 12V battery,
- a box with solar panel : solar controller and photovoltaic panel,
- a box with one of our AS2A power supplies connected to the 220V network.
Depending on the type of communication modem chosen, it can be connected to a serial port, a USB socket, etc.
LNS does not require any particular maintenance, except for potential updates. Generally, these updates are not essential, and are mainly used to add new features to meet your changing needs.
There may also be minor maintenance unrelated to the station: for example, in the case of a hydrological station, the sensor may need to be re-aligned from time to time.
If you have not set up a transmission, you will also need to come in from time to time and plug a laptop into the LNS station to retrieve the data. Connecting a computer to the LNS also allows you to change the configuration, but if you just want to retrieve the data you can simply plug a USB stick into the port provided. The station is equipped with an LCD screen and a keyboard that allows you to navigate through the menus, display certain data and also save the data on the connected USB sticks for example.
It is also possible to connect a WiFi key to the station to be able to connect to it remotely, especially on a site that is slightly difficult to access.
Depending on your installation, the energy autonomy of your LNS will vary greatly, depending on various criteria:
Depending on the application, your LNS acquisition station may not be fully self-sufficient, especially if your application requires high frequency data transmission.
The most common application is a water level measuring station taken by radar. With a transmission every quarter of an hour and a 12V 40 Ah battery, the station can operate autonomously for several months (including sending alerts and regular transmissions via GPRS).
The LNS can transmit a huge amount of information to you: its parameterization is virtually infinite, so the possibilities are numerous.
The data transmitted depends on the sensors connected to your system. In particular, the LNS can send you :
Our sales team is at your disposal to advise you in the field, to give you the possible applications so that you can process the data best suited to your needs. If you wish, our sales team can make a preliminary visit to the site to find out about the type of measurement to be carried out, the time step, etc., in order to recommend a type of power supply and size a battery or a solar panel according to your needs. They can also, if necessary, intervene on the parameterization of the LNS and advise you on potential more advanced programming.
Most of the time, LNS is used to transmit sensor data to the outside world; it is usually directed to a supervisor (our web supervisor or a supervisor hosted by the client). Thus, the data will arrive on the server at a fixed time step to be banked. This banking will enable statistics to be drawn up, but also the real-time display of data (the state of a river, the rainfall of a site, etc.), in the context of an alert system in particular.
In addition to being usable with all PARATRONIC sensors, it is also compatible with many products such as IP cameras or webcams. This makes it possible to take pictures at regular time intervals or according to particular conditions: for example, if the river reaches a certain level, you may wish to take pictures at shorter intervals to remove any doubt. A camera allows you to obtain an image without necessarily having to go to the site, which can be dangerous in the case of natural hazard events.
The LNS can be used in all areas of natural hazards in which PARATRONIC is involved.
The LNS has countless programming possibilities, numerous protocols, and can be connected to various sensors. While this makes it the ideal acquisition station for some applications, it may be oversized for other projects.
For example, if you want to measure a water level or a temperature at a given time step and transmit it, without doing any particular processing of the data, opting for a LHC data-logger will probably be more relevant for you. Your potential for action will then be more limited, but the cost will be lower and you will benefit from greater autonomy.
The LNS was developed by our design office and is manufactured in France, in our factory in Reyrieux.
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