Part 2 Lesson 1 a security alarm

A security alarm is a system designed to detect intrusion – unauthorized entry – into a building or area. Security alarms are used in residential, commercial, industrial, and military properties for protection against burglary (theft) or property damage, as well as personal protection against intruders. Car alarms likewise protect vehicles and their contents. Prisons also use security systems for control of inmates.

Some alarm systems serve a single purpose of burglary protection; combination systems provide both fire and intrusion protection. Intrusion alarm systems may also be combined with closed-circuit television surveillance systems to automatically record the activities of intruders, and may interface to access control systems for electrically locked doors. Systems range from small, self-contained noisemakers, to complicated, multi-area systems with computer monitoring and control.

The most basic alarm consists of one or more sensors to detect intruders, and an alerting device to indicate the intrusion. However, a typical premises security alarm employs the following components:

• Premises control unit (PCU), Alarm Control Panel (ACP), or simply panel: The "brain" of the system, it reads sensor inputs, tracks arm/disarm status, and signals intrusions. In modern systems, this is typically one or more computer circuit boards inside a metal enclosure, along with a power supply.

• Sensors: Devices which detect intrusions. Sensors may be placed at the perimeter of the protected area, within it, or both. Sensors can detect intruders by a variety of methods, such as monitoring doors and windows for opening, or by monitoring unoccupied interiors for motions, sound, vibration, or other disturbances.

• Alerting devices: These indicate an alarm condition. Most commonly, these are bells, sirens, and/or flashing lights. Alerting devices serve the dual purposes of warning occupants of intrusion, and potentially scaring off burglars. These devices may also be used to warn occupants of a fire or smoke condition.

• Keypads: Small devices, typically wall-mounted, which function as the human-machine interface to the system. In addition to buttons, keypads typically feature indicator lights, a small multi-character display, or both.

• Interconnections between components. This may consist of direct wiring to the control unit, or wireless links with local power supplies.

• Security devices: Devices to detect thieves such as spotlights, cameras & lasers.

In addition to the system itself, security alarms are often coupled with a monitoring service. In the event of an alarm, the premises control unit contacts a central monitoring station. Operators at the station see the signal and take appropriate action, such as contacting property owners, notifying police, or dispatching private security forces. Such signals may be transmitted via dedicated alarm circuits, telephone lines, or Internet.

Vocabulary

security alarm - средство охранной сигнализации

detect – обнаруживать, распознавать

intrusion [in’tru:ʒ(ə)n]- вторжение;

content – содержание

inmate - лицо, содержащееся под стражей

closed-circuit television surveillance system - система видеонаблюдения

inter’face to– согласовываться с

access ['ækses]- доступ

self-contained - автономный

noisemaker - генератор шума

premises security - охрана территории 

employ – использовать

alerting device устройство сигнализации

input - информация на входе 

disarm – снимать с охраны

circuit boards – микросхемы

enclosure – корпус

power supply - блок питания; источник питания

disturbance – нарушение, волнение, вмешательство

siren [‘sai(ə)rən]- сирена

защита, средство охранной сигнализации, распознавать/обнаруживать, цель, содержимое, доступ, система доступа, варьироваться от…до,

keypad - кнопочная панель или консоль

human-machine interface - операторская панель, интерфейс «человек-машина»

feature – обладать, представлять собой

character - символ

control unit - командный модуль 

spotlight - осветительный прожектор

notify - оповещать

dedicated – специальный

Exercise 1

Find Russian equivalents to the following words in the text. Learn them by heart.

средство охранной сигнализации, обнаруживать/распознавать, защита от, содержимое, автоматически, записывать, доступ, оповещать о, сложный, сигнальный огонь (2 варианта), предупреждать, предупреждение, кнопочная панель, кнопка, прямой/непосредственный, электропроводка, беспроводной, линия связи/связь, блок/ источник питания, устройство защиты, командный модуль, принимать меры

Exercise 2

Fill in the sentences with the words from the box

Detect, protection against (2), automatically, record, access, warned, complicated, wiring, link, links

1) They were asked to keep a diary and ________everything they ate or drank

2) It's all very________—but I'll try and explain

3) This instrument can ______small amounts of radiation

4) Police suspect there may be a ______between the two murders.

5) We’d better get an electrician to check the ________before we start decorating.

6) The side door provides _______to the garden.

7) The department is interested in developing closer _______with industry.

8) Wear clothes that provide adequate _______the wind and rain.

9) The kettle  ________switched off when it boiled

10) The B vitamins give ________ infection

11) Have you _______them (that) there will be an extra-person for dinner?

Exercise 3

Read the sentences and say whether they are true of false. Correct the false sentences.

1) A security alarm system is designed to detect only intrusion.

2) Security alarms are used for protection against burglary or property damage.

3) Prisons also use security systems for control of guards.

4) The most basic alarm consists of one or more sensors to detect intruders, and an alerting device to indicate the intrusion.

5) Premises control unit reads sensor inputs, tracks arm/disarm status, and signals intrusions.

6) Computer circuit boards  and a power supply are located inside a metal enclosure.

7) Sensors include bells, sirens, and/or flashing lights.

8) Alerting devices serve the dual purposes of warning burglars

of intrusion, and potentially scaring off occupants.

9) Keypads typically feature either indicator lights, or small multi-character display.

10) Security devices are used to detect thieves and feature spotlights, cameras & lasers.

Exercise 4

Solve the crossword

										4
						1
	1			2						2
						3
							3
4							5
			6
	7

Across

1) a small part of a machine that you press to make it work

2) a connection between two or more people or things

3) happening or done without involving other people, actions, etc. in between

4) to discover or notice something, especially something that is not easy to see, hear, etc

5) he opportunity or right to use something or to see somebody/something

6) the system of wires that is used for supplying electricity to a building or machine

7) telling or showing somebody that something bad or unpleasant may happen in the future so that they can try to avoid it

Down

1) using radio, microwaves, etc. (as opposed to wires or cables) to transmit signals

2) insurance against fire, injury, damage, etc.

3) to tell somebody about something, especially something dangerous or unpleasant that is likely to happen, so that they can avoid it

4) made of many different things or parts that are connected; difficult to understand