AND9670/D
2
Procedure:
1. Mount the header and the antenna provided with the SPS_RFID shield kit on the SPS_RFID shield header connector
and on the SMA antenna connector respectively
2. Mount the SPS_RFID shield onto Baseboard over the Arduino header connector
3. Connect the power cabling between the IDK Baseboard and the SPS_RFID shield. Connect mini
−
USB cable with the
IDK Baseboard and computer
4. Connect power supply adapter or any other supporting output voltage (7
−
12 V) to the IDK Baseboard and ensure that
the two green LED are on as shown in the left picture in Figure 1
Smart Passive Sensor
ON Semiconductor’s Smart Passive Sensors (SPS) are UHF RFUD wireless sensors that allow the passive sensing of fluid
level, temperature and mosisture values from the respective tags. The tag digitizes sensed information which can be read by
a standard UHF RFID Gen 2 compliant reader. The sensor IC of the SPS, powered by the UHF reader, utilizes the patented
self
−
tunning Chameleon engine which optimizes the detunned antenna condition by internal variable capacitance. The sensor
IC has the ability to measure the amount of RF power received referred to as On
−
Chip RSSI and sends this information to the
reader as a digital value.
The detailed information of each Smart Passive Sensors can be found in the respective datasheets which can be downloaded
in the ON Semiconductor’s homepage [1].
The following table shows the overview of the SPS family with the operating frequency in UHF band and sensing
functionaitly respectively.
Table 1. OVERVIEW OF SMART PASSIVE SENSOR FAMILY
Product (old = new Partnumber)
Feature
UHF Band
SPS1M002A = SPS1M002PET
Moisture
FCC (902–928 MHz)
SPS1M002B = SPS2M002PET
Moisture
ETSI (860–880 MHz)
SPS2T001A = SPS1T001PET
Temperature
FCC (902–928 MHz)
SPS2T001B = SPS2T001PET
Temperature
ETSI (860–880 MHz)
SPS1M003A = SPS1M003PET
Fluid Level
FCC (902–928 MHz)
SPS1M003B = SPS2M003PET
Fluid Level
ETSI (860–880 MHz)
Partnumber Nomenclature: SPSxYzzzVVV
•
SPS = Smart Passive Sensor
•
X
= Region, 1 = FCC, 2 = ETSI
•
Y = Sensing Function
•
zzz = unique iterative number
•
VVV = Form Factor: FOM = Foam; PET = flexible PET; PCB =
Printed Circuit Board; CRM = Ceramic Substrate