Combination sensor Astra 621. What you need to consider when installing a security detector

Description Teko Astra-621

Teko Astra-621 is a combined volumetric security detector. The volumetric security detector is designed to detect intrusion (attempted intrusion) into a protected space indoors and detection of glass breakage. The detector combines two different principles works: optical-electronic passive and surface sound. The design of the volumetric security detector allows it to be installed on the wall and in the corner of the room. Recommended installation height is up to 2.5 m.

The detector has a red indicator light to monitor performance and indicate in various operating modes. The Astra-621 volumetric security detector belongs to single-function, non-repairable, serviceable products of the IKN group of type 1 according to GOST 27003-90.

Basic data

• 2 detection channels: volumetric optical-electronic (IR), surface audio (AS);
• microprocessor signal analysis;
• two optoelectronic relays;
• additional protection with a metal shield from electromagnetic interference;
• "alarm memory" mode;
• AK channel testing mode;
• supply voltage control.

Optical-electronic channel of the volumetric security detector:

A security alarm is, of course, the most reliable means of protecting your home from unauthorized entry. The inscription on the fence “Caution, angry dog! Nowadays you can’t even scare small children, let alone the “pros” who have looked at an apartment in advance (or a private house) and are preparing to pay a visit in the absence of the owners. The eyes of everyone are detectors.

There are many types of detectors. Some react to opening doors and windows, others to glass breaking, and others to increased vibration. There are also those who “see” in infrared light any changes in the thermal background in a protected area. Some detectors, such as Astra-621, combine several methods for detecting uninvited guests.

Advantages

This device belongs to the combined category. "Astra-621" is a security detector that combines two detection channels at once.

The first has a volumetric optical-electronic infrared sensor. Thanks to this function, Astra-621 is able to “detect” any movement of a body emitting heat in a protected area. Some are simple security systems In general, only sensors of this type are used.

The second is a glass break sensor. Citizens of the older generation probably remember epoxy compounds applied to glass from inside the premises. The Astra-621 detector has nothing in common with such a primitive. Modern ones are installed indoors and “protect” all the windows in the room at once.

Principle of operation

How do the systems in service with the Astra-621 work?

A volumetric optical-electronic infrared sensor “illuminates” the room with built-in IR LEDs and monitors the thermal background. Any warm-blooded Living being, including a person, “glows” in the infrared background.

When a heat-emitting object penetrates into a protected object, sharp drop IR background, which is detected by the sensor. But if some cunning thief gets the idea to break into the house by wearing a suit that reflects infrared rays, nothing will come of it. Even pretending to be cold-blooded, he, moving around the room, will block the IR rays, which will again cause a change in the thermal background.

The operating principle of the glass break sensor is even simpler. In short, Astra-621 has a built-in microphone that responds to the sound of a glass window breaking. Any event occurring in the earth’s atmosphere generates a certain set of frequencies, amplitudes and other characteristics. We, for example, accurately identify the voices of people we know, distinguish the signal mobile phone from the doorbell.

The detector filters the vibrations entering the microphone in the same way, so that the alarm will only be raised by the sound of breaking glass, and certainly not by the sounds of a thunderstorm or a truck passing by a house.

Specifications

• responds to remote sounds at a distance of up to 6 m;
• IR background change detection angle is 90°;
• installed above the floor at a height (optimally) of 2.4 ± 0.1 m;
• operating voltage is 8-15 V;
• current consumed in standby mode - 0.015 A;
• maximum permissible current- 0.1 A;
• maximum EMF at relay contacts - 100 V;
• dimensions - 11x6x4.3 cm;
• weight - 100 g;
• can be operated in the temperature range from -20 to +50 °C and at air humidity up to 94%.

The detector is intended for use in confined spaces. The Astra 621 detector gives an alarm if:

• penetration into the premises occurs;
• reacts to destruction glass surfaces, for example, windows, shop windows, etc.

General information

The installation of this drug should only be carried out by specialists who have access to this species works:

The following functions are also provided:

• Backlight indication.
• Manual shutdown of modes.
• Ability to adjust AC and IR channels at different frequencies.

Operating instructions Astra 621

Let's figure out how the modes work in the Astra 621 Detector mechanism. The operating instructions provide nine ways to operate this device:

• signal “exit to standby mode”, the AK and IR channels are opened.
• “IR normal” and “IR alarm” signals. Normal mode lasts the entire time the device is running. An alarm signal occurs as a result of a person's movement in a closed area that is guarded.
• “AK normal” and “AK alarm” signal. Normal condition the mechanism occurs throughout the entire time, if there is no breaking of the glass surfaces. In case of breakage, an alarm is activated.
• The IR+AK alarm signal, as a rule, is triggered in cases of glass surfaces breaking and a person moving around the protected premises.
• notification of voltage levels: high, low, and below acceptable.

The sensor gives an alarm signal that reports high-frequency interference within 0.15 seconds from the moment it occurs. At low frequencies - 0.45 s.

The sensor mechanism contains special plugs:

• Ind (disables alarm and interference notification);
• GB (provided for adjusting the sensitivity of the AC channel);
• PIR (adjusts IR sensitivity);
• Mem (provided for enabling the “Remember alarm” mode).

The distance at which the device can fully operate should not exceed more than 12 m. The viewing angle is 90 degrees. Detection range - from 0.3 to 3 m/s. The voltage at which the device functions correctly ranges from 8 to 15 watts and the current is 15 mA (in all robot modes). The resistance in the loop should not exceed 8 ohms. The device gives an alarm within 60 seconds against intrusion into the premises or breaking glass. The dimensions of the device are quite convenient: 110*60*45, and its weight is no more than 9 grams. The device functions normally at different temperature fluctuations - from -20 to +50 degrees Celsius.

Operating principle of Astra 621

What should you consider when installing a security detector?

It is very important to choose the right place where the device will be installed. First of all, you need to consider:

1. The device should not be exposed to direct sunlight.
2. Do not install the device near radiators or other heat carriers.
3. It is not advisable to install the device in rooms where there is no good sound insulation.
4. In the room where the security apparatus will operate, the door and windows must be well closed. This is necessary to avoid false alarms.
5. In order to avoid any problems, Astra 621 must be installed according to the instructions; this is necessary for the device to work within its reach. Let's aim the Astra 621 installation device:

Connecting the device to the network can be done using the following diagram:

Connection diagram

Important to remember!

Before starting work, you need to remove the cover and all jumpers and plugs. After this, you can connect the Detector to the network. More detailed information about connection can be found in the instructions that come with the device.