H Cad
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Transcript of H Cad
![Page 1: H Cad](https://reader036.fdocuments.us/reader036/viewer/2022082808/55624997d8b42a1b4b8b46ae/html5/thumbnails/1.jpg)
Computer Assisted Dispatch (CAD)
A relational database program that deals with assigning resources to
situations
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What can you do with a CAD
• Send and receive calls
• Retrieve prior calls
• Access other law enforcement data systems– CLETS– NCIC
• Communicate with co-workers
• Collect statistical information
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Components of a CAD
• Work Station
• Dispatcher
• Field Unit
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Responsibilities of the Work Station
• Collect information from complainants
• Enter accurate information into the system
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Responsibilities of the Dispatcher
• Receive calls from the work station(s)
• Select a field unit to handle the call
• Send the call to the field unit
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Responsibilities of the Field Unit
• Respond to the calls sent by the dispatcher
• Keep the dispatcher advised of calls generated by the field unit itself
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Ok, so how does the call get from the work station to the field unit?
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The clerk at the work station receives a request for service
• Gather the information• Enter it into the
computer• The data travels
through the network to the dispatcher
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The dispatcher receives the data from the work station
• Reads the call• Selects a unit or units
to respond to the call• Sends the call to the
unit(s)• The call is broadcast
over radio waves to the radio receiver in the unit
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The unit receives the call and responds to the requested location.
• The radio receiver receives the call from the dispatcher
• If the call is for this unit then the call is accepted
• The unit responds to the call and handles the situation
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We said that a CAD system is a relational database. So what databases would we have?
• Units
• Current calls or events
• Previous calls or events
• Map page to street address table
• Weapons and/or warrants at a location
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Fields in the unit database
• Unit identifier (key field)
• Officer(s) in the unit
• Car identifier number
• Status– Assigned: enroute or arrived– Unassigned: available for calls
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Fields in the current calls database
• Event number (key field)
• Type of call
• Location
• Complainant
• Summary of the situation
• Date/Time
• Unit(s) assigned to handle the call