Multi-channel wireless sensor system for multiple device monitoring
06 September 2010
Deeter Electronics has introduced a multi-channel wireless sensor system for more complex installations. The new system permits the monitoring of greater numbers of remote devices than was previously possible and can display the state of up to eight analogue sensors and up to 32 switched inputs.
The system is connected from the base station to a personal computer via an RS485 to USB adaptor. On the host computer Deeter's Data Viewer software displays the outputs of up to eight analogue inputs and up to thirty two switched inputs from as many as eight sensor nodes, which can be multi-input Deeter wireless senders or Deeter wireless LVCS-RF liquid vertical continuous sensors.
The Data Viewer application runs under Windows and provides a means of viewing the outputs from multiple sensor nodes by interpreting the data stream from the base station’s serial communications port. It permits the user to view the inputs from multiple sensor nodes, change the settings in the base station and network, record the sensor data-stream, monitor and record network events and monitor remote sensor battery voltages.
Up to eight wireless senders can be used per multi-channel base station, each take the input from either a resistive potentiometric sensor or any 4-20mA device, and up to four switched inputs.
The simple-to-use base station receives the data from remote wireless devices and acts as the coordinator for an IEEE 802.15.4 wireless sensor network. It operates on one of 16 radio frequency channels available in the 2.4GHz ISM band. The internationally recognised IEEE 802.15.4 protocol allows several wireless sensor networks to share the same wireless spectrum without interference.
To increase the range of the system or overcome adverse environmental conditions, one or more Deeter wireless routers may be added to the wireless network. The use of multiple wireless routers creates a reliable, self-healing wireless mesh network.
The products are housed in rugged ABS enclosures with external antennas. Cable glands are provided for power input and signal outputs and they come complete with external, wall mounted, universal ac input power supplies.
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