AquaMon 900 MHz Repeater Nodes


AquaMon Introduction:

AquaMon is a tool for modern farming. It automatically collects data from local and remote sensors and uploads the sensor data to the web server. Once the data is resident on the web server, RSVP (Remote Sensor Viewing Platform) displays it in the format chosen by the grower. The system also works in reverse; the growers web server inputs controlling field operations.

AquaMon offers the grower the flexibility to monitor parameters important to his crop and remotely control operations critical to his farm. Available sensors allow monitoring soil conditions, climate, and equipment status. The AquaMon RSVP web server issues alarms when sensors reach a preset limit or can avert harm by activating preset controls within the sensor network.

AquaMon Advantages:

         24/7 access from any Internet enabled smart phone, tablet, or laptop

         Grower controls access to his data

         Grower selects the format of the data display

         Grower controls remote functions, alarm conditions and event notifications

         Grower retains ownership of the data at all times

         Accepts multiple sensor types including 2.5 volt analog, SDI-12, and 4-20 milliamp current loop

         Improve yields with precision irrigation, reduce power costs with smart pump control, and prevent crop damage with automated alarms.

AquaMon Repeater Nodes

The basic characteristics of radios limit their range. Under ideal conditions the relationship between effective signal power and distance is not linear; the effective signal power diminishes as the square of distance. This ideal range is further compromised by radio signals being reflected off the ground or being blocked by hilly terrain or the thick canopy of an orchard.

Repeater nodes link remote sensor nodes positioned beyond normal radio range with the AquaMon base station. The link is made over a 900 MHz wireless network. The repeater node accepts commands intended for the remote sensor node from the base station. Those commands are then relayed forward to the remote sensor node. Likewise; data from the remote sensor node destined for the base station is taken in by the repeater node and relayed to the base station.

The grower has great flexibility in creating a network which employs both repeater nodes and senor nodes. Each repeater node can support multiple sensor nodes. Multiple repeater nodes can also be linked to extend the network even further beyond the range of one additional radio link. The network does not limit the number of nodes or the number of repeaters that can be employed.

AquaMon Network Repeater Nodes


The chart above illustrates a typical wireless network which includes repeater nodes to extend network range. The base station communicates directly with the sensor nodes and repeater node within radio range. Nodes placed further from the base station connect through one or more repeater nodes. Each repeater creates a sub network of nodes within the larger node.

Repeater Node Models

CHA79000AXX 900 MHz Repeater Node; AC Power

CHA79000ABX 900 MHz Repeater Node; AC Power, Battery Backup

CHA79000XBX 900 MHz Repeater Node; Battery Power

CHA79000XBS 900 MHz Repeater Node; Battery Power, Solar Charger

Repeater Node Specifications:


Description: Sealed NEMA enclosure

Dimensions: 11 x 7.75 x 5.5

900 MHz Radio:

Frequencies: 902 to 928 MHz

Maximum Output power: 300mW

Range (line of sight): 2 Miles

FCC ID: B46-CH4390


AC: 120V, 60Hz

Battery: 12 Volt, 7 Amp-hour, Lead Acid

Solar Panel: Maximum Output 12 Watts

Cermetek reserves the right to make changes in specifications at any time and without notice. The information furnished by Cermetek in this publication is believed to be accurate and reliable. However, Cermetek assumes no responsibility for its use, or for any infringements of patents or other rights of third parties resulting from its use. No license is granted under any patents or patent rights of Cermetek Microelectronics, Inc.