Safety has always played an important role for humans. Since ancient times, during the construction of his house, everyone wanted to protect him as much as possible both from the effects of weather conditions and the arrival of unexpected guests.
Today, thick walls, armored doors and powerful locks no longer create a complete sense of security.
To do this, use security systems. It can be both professional video surveillance and simpler devices, for example, a video intercom or a “smart” peephole. Such gadgets are capable of not only fixing an attacker, but also avoiding the crime itself. In this article, we will dwell on the second devices in detail and consider connecting a video intercom in a private house.
Introducing the Gadget
Video intercom - an electronic gadget that allows you to remotely open and close doors. You can also see the guest on the monitor inside the house and communicate with him. In fact, this is an ordinary intercom with the presence of a camera, which significantly expands the functionality of an ordinary device.
Options and components may vary for such gadgets, depending on the manufacturer, its characteristics and capabilities. For example, there may be a color video intercom, and maybe black and white. Perhaps the presence of additional gadgets, ports, etc.
What do you need?
In order to assemble a security system in the form of an intercom, you need:
- monitor with control;
- cable for intercom;
- call panel;
- Power Supply;
- electromagnetic or electromechanical lock;
- key reader;
- controller;
- tools (depending on the installation location: drill, hammer drill, hammer, etc.).
You can notice that there are a lot of different devices, but not all of them are required, for example, a controller and a key reader.
The equipment listed above is often not included in the video doorphone kit because of the high cost, because of this, some sellers sell goods in parts, rather than in a group. You may also need to build this system in parts. However, at the stage of purchasing equipment, you can make a mistake and purchase devices that can not interact with each other. Therefore, it is advisable to consult with sellers to tell you what type of equipment this or that gadget can be connected to.
If you have the opportunity and you have found the video doorphone kit suitable for the functions, then do not hesitate and buy this option, as this will greatly simplify the task of installation.
Next, we consider the main points of the correct installation of the gadget at home.
Video intercom: connection, scheme
In order to independently install this device at home, you need to have some knowledge in the field of electrical engineering and the ability to work with tools such as a drill, screwdriver, hammer, tongs, and other similar equipment that may be needed during installation.
Suppose you bought all the equipment, including a video intercom. Connecting (the diagram below) devices is not too complicated, we look at the picture.
We see a simple circuit without using a controller and key reader. So, proceed to the installation. Problems with installing a monitor basically never arise, since this gadget can be hung anywhere just to reach the wires. And there is absolutely no difference - is it a color video intercom or not.
Although, if you bought a model that transmits data via a wireless network, it will be even easier - it remains to connect the monitor only to the network.
The call panel of a video intercom is somewhat more difficult to install, since you have to work with solid materials of a wall or fence. This is due to the fact that at the installation site it is necessary to make a small recess and cut a hole sufficient to draw wires through it. Installation is carried out at a height of about 160 cm from the floor.
Although a recess is necessary to protect the panel from external influences, we advise you to pay attention to “anti-vandal models” when choosing a gadget, which have a sturdy case for protection against intruders.
We establish the connection monitor-calling panel
You need to use a suitable cable in order to connect the door station and the video intercom. The connection (the diagram above) can be different and depends largely on the distance of the devices from each other.
So, you can use the SHSM wire at a distance of 30-40 meters. The color and number of cores may vary, but most often these are three conductors:
- Orange.
- Yellow.
- Blue.
Orange is used for power, yellow for video transmission, and blue, respectively, transmits audio. You may have a question: “But the diagram shows 4 connection points?” We answer: one of these cores will be covered with insulation, and on top with copper or other wire, which performs the role of grounding.
If the distance between the devices is more than 40 meters, then the information should be transmitted using a coaxial cable for the intercom.
We connect the lock and power supply to the system
So, the video entry phone door station and the monitor are connected to each other, what's next?
It remains the case for small, but do not rejoice ahead of time. Next, you need to connect the lock, power supply and video intercom. There is nothing abstruse here. Connection (the diagram clearly illustrates this) is carried out thanks to a simple circuit: network-power supply-lock-intercom-network.
The lock may be electromechanical or electromagnetic. Which one to choose is up to you. However, keep in mind that the electromagnetic will not work if the voltage disappears in the network, and the first will completely perform its tasks, but you will need to use a key to open and close.
You can connect the lock, power supply and intercom with a two-wire cable with a cross section of at least 0.75 sq. mm Usually, craftsmen use the simplest ball screw wire: one core is used to transfer power to the lock, the second - for the signal.
Mounting a system with a key reader
The ability to read keys is one of the functions that makes it more practical and safer system, which includes a video intercom. The connection, the diagram of which is shown below, will change slightly and will look like this:
As you can see, a key reader, an exit button, and a chip called a controller appeared in this circuit. In fact, all equipment, except the monitor, is closed on this circuit element. We highlighted in red those conductors that are responsible for powering the devices. As you can see, they are connected to the same place.
How to connect a chip? Do not worry, on each of them there is a marking, thanks to which it is clear where to connect the power, and where is the lock, etc., so connecting a video intercom to the controller will not be a big problem.
What to remember
Installation and connection of the intercom, as well as other electronic equipment with the appropriate knowledge is carried out without problems. However, they will certainly arise if you do not pay attention to the following recommendations:
- There should not be powerful electronic equipment, power lines, or wiring in the vicinity of the circuit. This may cause interference and interruption.
- You should try to create a chain with whole pieces of wires, and not sculpt one cable from several small pieces, since each twist or soldering leads to an insignificant, but still loss of signal.
- The polarity and designations indicated on the equipment must be observed.
- It is necessary to finally tighten all the bolts on the equipment after the system is assembled and its operability is checked. This will simplify debugging and tuning.
To summarize
If all the recommendations that are in this article are followed and nothing is confused, then you will succeed. Of course, there are individual cases, a variety of equipment that can be connected in a different way.
But the above schemes are suitable in 99% of cases. When installing the system, carry out all operations slowly, carefully, otherwise you may damage fragile equipment.