User's Manual

GPR4 Pavement Scanner

–

User Manual

000002

000022

Earth Science Systems, LLC

February

2019

Page 17 of 27

4.5 Charging the Batteries

There are four rechargeable batteries in the system that provide sufficient power for

operation over a full day. The battery in the scanner unit provides power for 4-5 hours. A

second battery is provided so that surveying can continue after the first is depleted. The

odometer also contains a rechargeable battery that will typically last for several days. Finally,

the Microsoft Surface Pro 4 tablet contains a battery that will provide 5-8 hours of continuous

operation depending on screen brightness settings. The shipping container contains an

integrated battery charger that can simultaneously charge all of the batteries with only a single

external power connection. The system is designed to be charged overnight so that all of the

batteries are ready for use during the work day. To charge the batteries, follow these steps.

1. Switch off the scanner unit and the odometer unit. Disassemble the cart and place

the components in the shipping container.

2. Remove the battery from the scanner unit and place it in one of the scanner

battery charging ports in the shipping case. Place the spare scanner battery in the

other charging port.

3. Connect the odometer charging cable to the odometer charge connector.

4. Connect the tablet charging cable to the tablet computer.

5. Plug the main charger power cable into 120/220 VAC mains power.

6. All batteries should charge in 4-5 hours, and all of the charge indicator lights will

be green when all of the charge cycles have completed.

4.6 System Care, and Cleaning

The pavement density system kept clean and free of debris. The sensor unit can be

cleaned with water and a mild detergent.

Figure 8. Density map overlay in a Google Maps HTML file.