It seems to many that the modern automation systems used in the "smart home" bear only costs to their owner. According to the majority, this is an expensive pleasure that is not accessible to everyone.

Nevertheless, an “intellectually developed” house is not only comfortable and safe, but also able to bring significant savings, reducing the cost of electricity and maintenance. This point is especially noticeable when it comes to a large apartment or cottage.

Statistics are always right. Thus, statistics show that smart home systems provide an opportunity to reduce energy costs by 8-12%, control of electricity and lighting leads to a reduction in electricity consumption by 3-5%, monitoring the operation of an automated building leads to lower costs its content is 3.5 times in comparison with the usual. An intelligent home requires a reasonable approach ...

Today in the market of security systems there is a wide variety of alarms that protect an apartment, private home or office. There are simply “chants” - systems that emit alarming sound signals, are based on GSM - send a message or ring the alarm to the owners. You can also see alarms with a built-in telephone line, a built-in telephone line and a GSM module at the same time.

According to the type of information transmission, signaling is divided into wired and wireless. Autonomous alarms work independently of other systems, remote alarms are connected to the central console, to which an alarm signal is received, as a result of which a response group can be sent to the object.

Depending on your wishes, you can choose the desired alarm, but which one can you set yourself? It already depends on the level of your knowledge ...

Cottage, cottage, just some country house or private estate - all this has one thing in common. All these "residences" usually need an autonomous water supply, their own sewage system, and sometimes a system that ensures the pumping out of melt and emergency polluted water from the basement. The implementation of such systems is carried out using pumps and pumping stations.

A pump is considered to be a mechanism designed to pump pressure in a liquid medium, and a pump station is a device that includes, in addition to the pump, the necessary drive (most often an electric one), a storage tank, and elements of an automation system. In order to understand how to connect a household pump, you need to get acquainted with the classification of pumps and their applications ...

Many owners of houses with a staircase are interested in the issue of organizing staircase lighting, because this is a passage zone with a large difference in elevation and the issue of safety of movement along it is in the first place.

The safety of the stairs is mainly affected by the correct design and calculation during the construction of the stairs, but lighting also plays a very important role. In the dark on the stairs it is so easy to stumble or stumble. But often the choice arises whether to go in the dark or the staircase will be lit constantly, since it will not work to turn off the light after passing through the stairs - the switch is located either above or below. Why pay for irrational staircase lighting?

The economical owner will always find a way out, including in the automatic lighting of the stairs. The simplest solution is to install a pair of straight-through switches that will control the power supply ...

How much power should a generator be for a home? Power is a significant characteristic, which depends on the number and types of home electrical appliances.

It should be remembered that, for example, refrigerators and air conditioners, as well as other cooling and heating devices, consume a lot of electric energy and need a powerful generator. But a small power unit will be an ideal solution for those who need a power source, say, for external lighting of an object.

What happens if you accidentally “overload” the generator? It must be borne in mind that if the generator has been operating for a long time exceeding the maximum permissible operating mode, engine overheating is possible. In addition, the integrity of the oil supply system may be impaired, which may contribute to a decrease in pressure ...

A generator set is a backup source of electricity, which is turned on (or turned on) when the main electricity fails and the necessary load is connected to it (generator) - a house, office, enterprise.

Starting, stopping and connecting the load can be done in two ways - in automatic and manual modes.

In this short article, we will try to talk about how to independently automate the entire process of turning on and off the generator and how to connect the ATS to the generator itself.

For the normal and correct operation of the “generator-ATS” link, you must understand the operation algorithm of both the generator and the ATS, namely, all the time parameters of the generator and the ATS, what should be turned on and when ...

No closed automatic control system is conceivable without sensors, on the testimony of which feedback is formed.

Sensors ... So different in design and principle of action. Sensors of pressure, temperature, speed, effort, current sensors, voltage, displacement ...

But the sensor is just a device that changes its signal in proportion to the measured parameter. And since the most convenient signal for transmission and conversion is electric current, the principle of operation of most sensors is based on a change in their own electrical resistance under the influence of an external factor. Therefore, sensors with built-in tensometric elements have become widespread ...

In the previous parts of the article, thermistors and thermocouples were described. This article will talk about other types of temperature sensors.

In the same temperature ranges as for semiconductor thermal resistances, ordinary diodes or pn junctions of transistors are often used to measure and control temperature.

The use of these devices is explained by the fact that they have a temperature coefficient of voltage TKN. For all semiconductors, it is negative and approximately the same: -2mV / ° C. To verify this, it is enough to do the simplest experiment described below. If a Chinese-made digital multimeter at room temperature “rings” silicon diodes or transistor junctions, then the numbers about 690 - 700 are displayed on the indicator ...