What is spYdaq?
spYdaq is a system comprising of a number of radio transmitting sensors that measure parameters and send them securely by using a licence free radio network to a central Basestation.
The data are sent using a Manchester Encoded error correcting code with multiple transmissions which, when combined with Antenna Diversity, ensures there is no loss of data in normal use from a properly installed system. Up to 16 transmitters can communicate to a single base station with each transmitter capable of having up to three inputs: Temperature, Relative Humidity or Universal – Universal inputs can be configured to accept almost any type of measurement sensor . The base station collects the data from the transmitters has a number of ways of recording the values:
GPRS connection – An internal GPRS modem sends the values direct to our secure managed servers
RS232 serial port configured as a Modbus slave to any Modbus master.
USB – USB connection to a local computer running our spYmonitor-local web interface.
The base station contains enough memory to hold 15,488 sets of readings (up to three parameters per transmitter) and 255 alarm events. This should allow the system to operate for up to 6 days with a system containing 16 transmitters, each transmitting every 10 minutes in the event of the GPRS connection or local PC connection being lost.
There is also a USB port used for initial configuration of the base station using our spYconfig software.
The wide range of inputs offered by the universal transmitter design enables virtually any parameter to be measured and logged by connecting an appropriate sensor. Parameters that can be measured and logged are:
• Pt 100
• Thermocouple Types J, K, T, R, S
• 4-20 mA – Scaled in engineering units
• Contact Closure
The Basestation checks locally for alarm conditions with inbuilt audio and visual alarms as well as providing a switched contact output that can be used to trigger external devices. Alarming locally means that potential
trouble spots can be quickly detected and corrective action taken immediately, perhaps saving an entire batch from damage.