Position reporting for road treatment elements

A system for reporting a position of at least one air-over-hydraulic road treatment element comprises:

• at least one pair of pneumatically activated switches;
• and
• a control circuit connectible in electrical communication with a power source;
• wherein, for each pair of pneumatically activated switches:
• each pneumatically activated switch is electrically coupled to the control circuit to provide a switch activation electrical signal to the control circuit when a flow of pilot air activates the pneumatically activated switch;
• a first one of the pneumatically activated switches is pneumatically coupled to a first pilot air input associated with movement of the air-over-hydraulic road treatment element toward an engaged configuration so as to generate a first switch activation electrical signal indicating movement of the air-over-hydraulic road treatment element toward the engaged configuration;
• and
• a second one of the pneumatically activated switches is pneumatically coupled to a second pilot air input associated with movement of the air-over-hydraulic road treatment element toward a disengaged configuration so as to generate a second switch activation electrical signal indicating movement of the air-over-hydraulic road treatment element toward the disengaged configuration;
• the control circuit configured to, for each pair of pneumatically activated switches:
• use the switch activation electrical signals to determine whether the air-over-hydraulic road treatment element is in an engaged configuration or a disengaged configuration;
• responsive only to the switch activation electrical signals indicating that the air-over-hydraulic road treatment element is in the engaged configuration:
• initiate an engaged configuration electric signal;
• and
• maintain the engaged configuration electric signal until the switch activation electrical signals indicate that the air-over-hydraulic road treatment element is in the disengaged configuration;
• responsive only to the switch activation electrical signals indicating that the air-over-hydraulic road treatment element is in the disengaged configuration:
• initiate a disengaged configuration electric signal;
• and
• maintain the disengaged configuration electric signal until the switch activation electrical signals indicate that the air-over-hydraulic road treatment element is in the engaged configuration;
• wherein the control circuit is configured so that, for each pair of pneumatically activated switches, the engaged configuration electric signal and the disengaged configuration electric signal are mutually exclusive.