Field Subsystem Tests
| Parameters Tested |
Units |
Expected Range (Value) |
| Solar Power System |
| Date |
- |
- |
| Time of day |
- |
- |
| Sky conditions |
- |
- |
| Battery voltage (using charge controller meter for all readings in this section) |
vDC |
11.5-14 |
| Solar charging current (panels illuminated in direct sun) |
Amps |
8-19 |
| Load current |
Amps |
Less than 2.5 |
| 24 vDC Power System |
| Power converter output voltage under expected load (reader) |
vDC |
24 (+/- 0.5) |
| Border Crossing Tag Read |
| DPS tags read from test vehicle |
Yes/No |
Yes |
| Tag Reading Reliability |
| Number of tags read from a 50 truck sample with readable tags |
Reads |
> 85% |
| System Latency |
| Time required for RFID devices to become operational after turning the system off and on |
Minutes |
< 5 |
| Data Logger |
| Verify logger data light-emitting diode (LED) light flashes with a tag read |
Yes/No |
Yes |
| Verify logger passes data from the reader to a personal computer (PC) connected to the logger’s configuration port |
Yes/No |
Yes |
| Extract sample data from logger memory card showing tag ID and proper time stamp |
Samples |
Yes |
Central Subsystem Tests
| Parameters Tested |
Units |
Expected Range (Value) |
| Wireless Signal Strength |
| Once the router has been powered up and reaches a steady state, access the router’s internal management Web pages and record the cellular signal strength. |
dBm |
Greater than -90 |
| Static IP Address |
| Cycle power, access the router via the local area network (LAN) side upon boot up, record the wide area network (WAN) side IP, and then wait 10 minutes. |
IP Address |
The same static IP needs to be read in each repetition. |
| Cycle power, access the router via the LAN side upon boot up, record the WAN side IP, and then wait 10 minutes. |
IP Address |
| Cycle power, access the router via the LAN side upon boot up, and record the WAN side IP. |
IP Address |
| Reader Station Communication Accessibility |
| Record whether the router Web interface was accessible via the Internet. |
Yes/No |
Yes |
| Reader Station Auto-Power Cycle |
| Confirm that the iBoot cycles the power on the router after the scheduled timeout period. |
Yes/No |
Yes |
| RFID Reader Shutdown |
| Alter the real-time clock from the programmable relayer minutes before programmed shutoff is to occur. |
Yes/No |
Yes |
| Verify system has shut down. |
Yes/No |
Yes |
| Alter the real-time clock from the programmable relayer minutes before programmed startup occurs. |
Yes/No |
Yes |
| Verify system started up. |
Yes/No |
Yes |
| Wireless Data Transfer |
| Confirm tag reads are immediately sent to the central system software from the field site. |
Yes/No |
Yes |
| Remote Data Retrieval |
| Download data from the data logger. |
Samples |
Some sample data |
| Data Retrieval Application |
| Test for resiliency of the application in the central subsystem. |
Yes/No |
Yes |
