Computer-Aided Dispatch

computer-aided dispatch

In addition to standard computer aided dispatch (CAD) functionality (real-time visibility into fleet location and readiness, closest vehicle selection, automatic routing and incident time stamping) provided by ZOLL’s Rescue Net Dispatch,

Pro EMS utilizes additional software, hardware and CAD product features that enable Dispatchers to more efficiently deploy and route the most appropriate resources to each request for service.

Situational awareness is increased for Dispatchers, Supervisors, Public Safety Administrators and City/Town Officials by providing a dynamic, real-time, picture of available resources within their respective service areas.

Through a collaborative effort with the City of Cambridge Information Systems Department, ZOLL Medical’s Custom Solutions Group, and Pro EMS IT, an Application Programming Interface (API) was engineered and deployed. The API allows incident data from the Cambridge Emergency Communications Center’s QED Acuity Computer Aided Dispatch to be automatically routed and entered into the Pro EMS CAD without additional steps by the 911 Operator. Prior to the API, Cambridge ECC dispatchers would initiate a phone call to Pro EMS after completing the initial 9-1-1 phone screening, wasting valuable time before an ambulance could be dispatched. As a result of the API installation, dispatchers in our Communications Center are now alerted once the incident location is available and are able to immediately dispatch an ambulance, often times while the caller is still on the phone with the 911 Operator.

Once vehicles are activated and assigned to a Service Area, dispatchers immediately see the area of coverage provided by each vehicle based on the specified and/or contractual response time. A dynamic geographical service area, or a “cloud”, encircles each vehicle on the map showing the area of coverage provided; the cloud is a graphical representation of the area of coverage each unit can safely and efficiently provide service for based on historical data and predetermined response criteria. As requests for service are taken, units are assigned to respond and other available units are dynamically posted or repositioned to provide the best coverage for the given level of units available.

Impedance Monitor uses commercial maps and additional City, Town or State GIS data layers to incorporate information on road segment speeds (the actual speed that a vehicle can travel over a road segment), physical barriers (one way streets, rivers, etc.) and road closures/construction (manually updated daily). Automatic Vehicle Location (AVL) data from our vehicles constantly provides feedback to the monitoring system as they respond to emergencies and traverse streets while performing normal duties. Continuous feedback from the vehicles, provided wirelessly through OMGs (modems), enhances street network data for varying road and traffic conditions based on time of day, such as rush hour, seasonal changes, inclement weather or road construction. This information is “learned” by the system to assist with closest vehicle selection and routing recommendations, ultimately assisting field personnel in reaching their destination safely, efficiently and in compliantly.

The Visual System Status Management component of our CAD is configured to automatically query the CAD for a given time period to produce a graphical representation of both incident locations and demand densities throughout our Service Areas. The software produces a graphical view of busy areas or “hot spots” based on historical data compiled from previous requests for service (A map is overlaid with varying shades of color to indicate call density in that particular area).

The representation is dynamic, changing minute-by-minute, to reflect demand based on time of day, and day of week in a particular service area. This allows Dispatchers to proactively move units to posting locations better suited for responses to the predicted call locations.