М-bus (Meter-bus) is a new European standard for remote reading
of tax instruments and different types of sensors. The reading
is accomplished by several different methods - from direct reading
of current indication of the instruments to fully remote reading
of all devices in the net by GPRS technology. The use of M-bus
interface allows fully electronic reading of data with all the
benefits of it.
There are two ways to collect data and prepare reports and
billing:
- direct connection of calculating device (PC, laptop, PDA,
etc.) to m-bus supply converter
- data transmission to remote locations using GPRS or Ethernet
For the second variant we have developed modules, which can
be connected to the main supply converter and to transmit information
to a remote location. These modules are designed to be connected
to n-networks, so to achieve centralization, without making
the system too expensive. For now we are offering variants with
GPRS technology and ethernet transmission.
Our m-bus modules for remote data transmissions are two
main types: transmission using GPRS technology and transmission
using ethernet. Both types have input RS-232C, used to connect
to main m-bus supply unit in the network (MBRS-xx device).
GPRS modules can work with every mobile operator, who offers
GPRS connection. For the purpose a SIM-card must be inserted
in our module and necessary info about the connection to
be memorized in the device. We offer configuration software
for this. After set-up, connection parameters can not be
changed by operators, which collects read data.
Ethernet modules allows readout data to be transmitted
through local ethernet network. Our ethernet module is organized
similarly to GPRS module - separation between functions
of control and data operator. It is useful in buildings,
where local network/internet exists, because without serious
investment the client can achieve full centralization of
the remote readouts.
All module types are powered from standard power supply
220/230 VAC, and they can work without problems down to
voltage of 170 VAC.
Special precautions are taken against data manipulations
are malicious intended acts. Several data operators have
different access, and the control and data operators are
independent from each other. Service data is written once
by the manufacturer or when installing the device and setting
the system.
