Alarm and Sensor Technologies - Revision history

Arclight: /* A basic alarm circuit */

2012-05-14T18:35:59Z

A basic alarm circuit

← Older revision		Revision as of 11:35, 14 May 2012
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	*Each zone includes a resistor in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. circuits.		*Each zone includes a resistor in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. circuits.
	<BR>		<BR>
	[[File:3-state_alarm_wiring.png\|~~350px~~]]		[[File:3-state_alarm_wiring.png\|600px]]

	====Sensors====		====Sensors====

Arclight: /* Overview of Alarm Technologies */

2012-05-14T18:35:26Z

Overview of Alarm Technologies

← Older revision		Revision as of 11:35, 14 May 2012
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	The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.		The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.
	<BR>		<BR>

	Alarm circuits and sensors are the "detection" portion of this cycle. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.		Alarm circuits and sensors are the "detection" portion of this cycle. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.
	====A basic alarm circuit====		====A basic alarm circuit====

Arclight: /* Overview of Alarm Technologies */

2012-05-14T18:35:05Z

Overview of Alarm Technologies

← Older revision		Revision as of 11:35, 14 May 2012
Line 1:		Line 1:
	===Overview of Alarm Technologies===		===Overview of Alarm Technologies===
			[[File:Deter horiz.png\|600px]]
			<BR>
	The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.		The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.
	~~[[File:Deter horiz.png\|600px]]~~
	<BR>		<BR>
	Alarm circuits and sensors are the "detection" portion of this cycle. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.		Alarm circuits and sensors are the "detection" portion of this cycle. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.

Arclight: /* Overview of Alarm Technologies */

2012-05-14T18:34:33Z

Overview of Alarm Technologies

← Older revision		Revision as of 11:34, 14 May 2012
Line 1:		Line 1:
	===Overview of Alarm Technologies===		===Overview of Alarm Technologies===
	The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.		The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.
	~~<BR>~~		[[File:Deter horiz.png\|600px]]
	<BR>		<BR>
	Alarm circuits and sensors are the "detection" portion of this cycle. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.		Alarm circuits and sensors are the "detection" portion of this cycle. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.

Arclight: /* Overview of Alarm Technologies */

2012-05-14T18:22:01Z

Overview of Alarm Technologies

← Older revision		Revision as of 11:22, 14 May 2012
Line 3:		Line 3:
	<BR>		<BR>
	<BR>		<BR>
	Alarm ~~technology exists to augment humans in meeting these goals~~. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.		Alarm circuits and sensors are the "detection" portion of this cycle. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.
	====A basic alarm circuit====		====A basic alarm circuit====
	Commercial alarm systems are typically wired up as follows:		Commercial alarm systems are typically wired up as follows:

Arclight: /* A basic alarm circuit */

2012-05-14T18:14:32Z

A basic alarm circuit

← Older revision		Revision as of 11:14, 14 May 2012
Line 6:		Line 6:
	====A basic alarm circuit====		====A basic alarm circuit====
	Commercial alarm systems are typically wired up as follows:		Commercial alarm systems are typically wired up as follows:

	~~[[File:3-state_alarm_wiring.png\|400px]]~~

	*One or more sensors are placed in series to form a "loop." Each loop forms a sensor zone.		*One or more sensors are placed in series to form a "loop." Each loop forms a sensor zone.
	*Sensor zones are always wired up as "normally closed"		*Sensor zones are always wired up as "normally closed"
	*Each zone includes a resistor in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. circuits.		*Each zone includes a resistor in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. circuits.
	<BR>		<BR>
			[[File:3-state_alarm_wiring.png\|350px]]

	====Sensors====		====Sensors====

Arclight: /* A basic alarm circuit */

2012-05-14T18:13:25Z

A basic alarm circuit

← Older revision		Revision as of 11:13, 14 May 2012
Line 6:		Line 6:
	====A basic alarm circuit====		====A basic alarm circuit====
	Commercial alarm systems are typically wired up as follows:		Commercial alarm systems are typically wired up as follows:

			[[File:3-state_alarm_wiring.png\|400px]]

	*One or more sensors are placed in series to form a "loop." Each loop forms a sensor zone.		*One or more sensors are placed in series to form a "loop." Each loop forms a sensor zone.
	*Sensor zones are always wired up as "normally closed"		*Sensor zones are always wired up as "normally closed"
	*Each zone includes a resistor in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. circuits.		*Each zone includes a resistor in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. circuits.
	<BR>		<BR>

	~~[[File:3-state_alarm_wiring.png]]~~

	====Sensors====		====Sensors====

Arclight: /* A basic alarm circuit */

2012-05-14T18:10:04Z

A basic alarm circuit

← Older revision		Revision as of 11:10, 14 May 2012
Line 11:		Line 11:
	<BR>		<BR>

	~~This allows up to 4 states to be identified~~:		[[File:3-state_alarm_wiring.png]]

	*Sensor activated (i.~~e. door opened or motion detector sensing motion)~~
	*Sensor not activated (i.e. door closed)
	*Open Circuit (i.e. wiring fault or cut)
	*Shorted Circuit (i.e. deliberate shorting or bypass of a sensor)


	====Sensors====		====Sensors====

Arclight: /* Overview of Alarm Technologies */

2012-05-13T18:17:12Z

Overview of Alarm Technologies

← Older revision		Revision as of 11:17, 13 May 2012
Line 3:		Line 3:
	<BR>		<BR>
	<BR>		<BR>
	Alarm technology exists to augment humans in meeting these goals. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state. ~~Multiple~~ sensors ~~may be~~ placed in series to form a "loop."		Alarm technology exists to augment humans in meeting these goals. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state.
	~~<BR>~~		====A basic alarm circuit====
	~~<BR>~~		Commercial alarm systems are typically wired up as follows:
	~~A proper implementation will include~~ a ~~series~~ resistor ~~somewhere~~ in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. ~~Sensor zones are always wired up as "normally closed"~~ circuits.		*One or more sensors are placed in series to form a "loop." Each loop forms a sensor zone.
	~~<BR>~~		*Sensor zones are always wired up as "normally closed"
			*Each zone includes a resistor in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. circuits.
	<BR>		<BR>

	This allows up to 4 states to be identified:		This allows up to 4 states to be identified:

Arclight: /* Overview of Alarm Technologies */

2012-05-13T18:14:18Z

Overview of Alarm Technologies

← Older revision		Revision as of 11:14, 13 May 2012
Line 1:		Line 1:
	===Overview of Alarm Technologies===		===Overview of Alarm Technologies===
	The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.		The point of physical security measures is to provide a complete triangle of <B>Deterrence</B>, <B>Detection</B>, and <B>Delay</B>, ultimately leading to <B>Response</B> from the site personnel, police, etc.
			<BR>
	<BR>		<BR>
	Alarm technology exists to augment humans in meeting these goals. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state. Multiple sensors may be placed in series to form a "loop."		Alarm technology exists to augment humans in meeting these goals. The typical alarm system includes overlapping sensors to check for door/open closed status, glass breakage, motion, and more. These sensors are electrically "supervised" by a microcontroller and monitored constantly for changes in state. Multiple sensors may be placed in series to form a "loop."
			<BR>
	<BR>		<BR>
	A proper implementation will include a series resistor somewhere in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. Sensor zones are always wired up as "normally closed" circuits.		A proper implementation will include a series resistor somewhere in the middle of each loop, a resistor at the end of each sensor loop, and the ability to check voltage or resistance at the alarm panel. Sensor zones are always wired up as "normally closed" circuits.
			<BR>
	<BR>		<BR>
	This allows up to 4 states to be identified:		This allows up to 4 states to be identified: