2.4 Hardware and Software Requirements
The following sections contain the requirements for the UTT system mobile hardware and software needed for the UTT system user to interface with the system.
2.4.1 Hardware Requirements
Definition
For the pilot test, the UTT system consists of the following hardware:
- Terminal – The terminal contains the processors and firmware required for operation.
- Antennas – The UTT system for this pilot test includes two separate antennas, one for communications and one for location determinations through GPS installed near the top or on top of the trailer in a position with a clear view to the sky.
- Cables – Cables connect the UTT system terminal to any installed sensors, tractor power, and the rechargeable battery
- Rechargeable battery – The rechargeable battery is a required back-up power source that will provide power to the UTT system when the trailer is disconnected from the tractor.
- Cargo sensor – The cargo sensor is installed inside of the trailer to monitor if the trailer is loaded or unloaded.
- Door sensor – The door sensor is installed next to the trailer doors to monitor door opening and closing events.
- Terminal/cargo sensor/battery combined mount – The terminal/cargo sensor/battery combined mount is installed in the trailer and holds the three components of the UTT system.
- Field service tool – The field service tool is a software package that operates on a handheld computer. It is used to communicate with the UTT system for configuration and diagnostic purposes to verify proper operation.
- Other inputs – It may be desirable to have available inputs to interface with other sensors on the UTT system in addition to cargo and door sensors for detection of motion, intrusion, radiation, etc. The UTT system includes two additional available inputs for such integration.
Performance constraints and requirements
Physical Dimension Constraints
2.4.1.1 Any hardware component placed on the trailer roof shall not exceed 1 inch in height. (The purpose of this requirement is to protect hardware, such as antennas and solar collector plates from being hit and damaged. For example, some carriers drive trucks beneath a fixed beam to scrape snow and ice from the roof of the trailer, which may damage hardware on the trailer roof.)
Environmental Specifications
2.4.1.2 Hardware shall meet or exceed the mechanical and environmental requirements listed in Table 2-3.
Table 2-3: Environmental Specifications
| Condition |
Requirements |
| Temperature – Operational |
Terminal: -30°
C to +60°
C, Antenna: -40°
C to +70°
C |
| Temperature – Non-Operational |
Terminal: -40°
C to +85°
C, Antenna: -50°
C to +85°
C |
| Vibration – Operational |
2.4 gRMS from 10-1000 Hz |
| Vibration – Non-operational |
5.2 gRMS from 10-1000 Hz |
| Humidity – Operational & Non-operational |
0-98%RH @ 38°
C without condensation |
| Immersion and Splash (Water, Chemicals, and Oils) |
Terminal: Immersion Tests, per SAE J1455 Revised OCT 10a, section 4.3.3.2. (This test is recommended, but not required if the terminal is to be mounted inside the wall of a dry van in a protected location.)
Terminal: Splash Tests, chemical exposure per SAE J1455, limited to engine oils and additives, washer solvent, gasoline, diesel fuel, alcohol, anti-freeze water mixture, soap and detergents, steam, battery acid, water, snow, and salt water. (This test is recommended, but not required if the terminal is to be mounted inside the wall of a dry van in a protected location.)
Antenna: Exposure per SAE J1455, Section 4.4 |
| Fungus |
Per MIL-STD-810E, Procedure 508.3 |
| Altitude – Operational |
0-15,000 ft |
| Altitude – Non-operational |
0-15,000 ft |
| Shock – Maximum Level |
20G @ 11msec |
| Electrical |
9-16V |
| Thermal Cycle |
8 and 24 hours per SAE J1455 |
| Thermal Shock |
Per SAE J1455 |
| Transit Drop (in packaging) |
Packaged drop per SAE J1455, Section 4.10.3.2.2 |
| Solar Radiation |
Antenna and cables only: 43-75 watts/sq.m of 280-400 nm for 300 hrs according to John Deere JDQ 53.2 |
Cables /Connectors
2.4.1.3 All connectors shall be differentiated from each other to prevent incorrect attachment.
Electromagnetic Interface (EMI) Shielding
2.4.1.4 All EMI shielding shall be built into the UTT system terminal and associated hardware; external shielding shall not be required.
Marking
2.4.1.5 The UTT system terminal marking shall clearly identify terminal manufacturer, part number, and serial number, at a minimum.
2.4.1.6 The UTT system terminal shall include a separate label with serial number and barcode that may be attached externally to the trailer at time of install.
2.4.1.7 The UTT system terminal shall include required regulatory markings.
Antennas
2.4.1.8 The UTT system antennas shall be installed on a fiberglass-roofed trailer without drilling or cutting into the fiberglass. (The purpose of this requirement is to avoid cutting of fiberglass roofing material, since holes in fiberglass may lead to water leaking into the trailer. There are no similar conditions for metal roofs.)
Electrical Power Range and Limits
2.4.1.9 The UTT system terminal shall support a direct power feed of 12V nominal (e.g., a vehicle battery).
2.4.1.10 The UTT system terminal shall conform to the electrical test limits of SAE J1455.
2.4.1.11 The UTT system terminal shall conform to SAE J1113-13 Electromagnetic Compatibility Measurement Procedure for Vehicle Components for electromagnetic compatibility and electrostatic discharge.
Circuit Protection
2.4.1.12 The UTT system terminal shall have no internal fuses or circuit breakers that require manual intervention to reset. (External fuses or circuit breakers may be required for safety purposes.)
Rechargeable Battery
2.4.1.13 The UTT system terminal shall support a rechargeable battery with a 1-year shelf life, assuming 25°
C, from date of manufacture.
2.4.1.14 The UTT system rechargeable battery shall provide power for at least 30 days if the terminal were configured according to the default terminal power state and messaging schedule as defined in Table 2.3 with the exception of any geo-fence checks (assuming the vehicle battery provides no additional power to the terminal).
2.4.1.15 The UTT system rechargeable battery shall provide power for at least 10 days, over the entire temperature range, if the terminal were configured according to the default terminal power state and messaging schedule as defined in Table 2.3 including geo-fence checks, assuming 1-hour geo-fence check intervals.
2.4.1.16 The rechargeable battery shall survive for a minimum of 6 months at 40°
C after disconnection from a power source without permanent damage to the battery.
2.4.1.17 The UTT system terminal shall provide information to the user OTA of the replacement date of the rechargeable battery.
2.4.1.18 The UTT system terminal shall provide information to the user OTA when the battery requires recharging (approximate 10% threshold).
2.4.1.19 The UTT system rechargeable battery shall be fully rechargeable in 8 hours or less when charging from a typical 12V tractor power supply system.
Power Management
2.4.1.20 The UTT system terminal shall draw power from the following sources if available, in the priority as listed:
- Vehicle
- Rechargeable battery
2.4.2 Software Requirements
Definition
Requirements for the software that is visible to the system user are included in this section. The UTT system-provider hosts this software that may be accessed by users through the Internet. Using the software, the user may view information, such as trailer positions and cargo, door, geo-fence, or connection events, or configure settings for the system such as landmarks, trailer groups, and user accounts. Additional software requirements are listed in sections above describing time of trailer connection and disconnection, trailer location and mapping, geo-fencing, alerts, and incorporation of fleet management tools.
Performance constraints and requirements
Messaging
2.4.2.1 The UTT system software shall store in the database and display all incoming messages including trailer connect/disconnect, door open/closed, cargo empty/not empty, battery events, and status reports.
2.4.2.2 The UTT system software shall support the configuration of terminal parameters by authorized users.
2.4.2.3 The UTT system software shall support the ability for an authorized user to request an updated status report from the UTT system terminal.
Accounts
2.4.2.4 The UTT system software shall support the administration of user accounts, including creation, modification, and deletion of accounts.
2.4.2.5 The UTT system software shall allow authorized users from a user account to only access to their user account data.
User Interface
2.4.2.6 The UTT system shall provide access to the data from an Internet browser. (Microsoft Internet Explorer version 6.0 or later is recommended).
2.4.2.7 The UTT system shall support a password-protected secure log-in access to the user's account for authorized users.
2.4.2.8 The UTT system software shall include a monitoring screen for the user to view all trailers, which will display the trailer ID, trailer type, terminal type, SCAC, date/time of last message, door status, connect status, cargo status, and last-known trailer location with proximity to city/town/landmark.
2.4.2.9 The UTT system software shall allow authorized users to modify the labels of the sensors, such as the door sensor and cargo sensor. (The purpose of this requirement is to allow for the configuration of the system at the time of installation. Normally, the installer would connect a sensor to one of the input ports on the terminal and then label that input port with the name of the connected sensor. For the purposes of this pilot test, that name will be either "cargo sensor" or "door sensor". These names are expected to remain for the life of the system, but an authorized user may edit the names at any time.)
2.4.2.10 Using the UTT system software, authorized users shall be able to view and edit trailer details, including trailer ID, SCAC, trailer type, and description.
2.4.2.11 Using the UTT system software, authorized users shall be able to view the event details and event history for a trailer including positions, cargo events, door events, and connect events for a user-selected time period (default to the prior week).
2.4.2.12 Using the UTT system software, authorized users shall be able to view all messages including status reports, events, and positions for a given trailer in a time-sequential order for a user selected time period (default to the prior week).
2.4.2.13 Using the UTT system software, authorized users shall be able to create and delete trailers and their history and to rename trailers (retaining history).
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