The basic knowledge part mainly needs to talk about the basic components of the security system.
Camera: There are cameras used outdoors and indoors. Indoors must not be used outdoors. Needless to say, the role of the camera is nothing more than to record images. Today's security cameras generally have a mobile capture function, which automatically captures when an object is detected, and can choose to push it to the user. If the screen does not change, there is basically no need to write new data, and the storage space is not large. Common indoor cameras include wide-angle and pan-tilt. The wide-angle coverage area is relatively large (that is, the focal length is very short), but it cannot be moved. The pan-tilt can be rotated up and down, but the area covered by the general field of view is relatively small (that is, the focal length). Longer), both have their pros and cons and can be used together. Regrettably, most pan-tilt cameras currently do not have the functions of automatic tracking of movement and automatic inspection.
Door sensor: As mentioned before, the door sensor can sense the opening state of the door or window.
Smart door locks: Smart door locks are now rapidly popularized and are very convenient to use. They generally support multiple ways of unlocking passwords, fingerprints, keys, etc., and also have linkage and alarm functions. For example, the owner can automatically release the alert state when the owner comes back. Picking the lock will trigger an alarm.
Human infrared sensor: The human infrared sensor can sense the movement of the human body. Of course, it is often used as the basic sensor for light control, but it is very useful for security.
Gas sensor: It is used to monitor whether there are gas components in the air. It is generally installed in the kitchen or bathroom with gas pipelines.
Flood sensor: used to monitor whether there is water, usually set in the kitchen or bathroom.
Smoke sensor: Because it monitors whether smoke is generated, it is generally installed in an area with a large fire hazard, such as a kitchen. If possible, it can be installed in each room.
Acousto-optic alarm: The acousto-optic alarm mainly emits high-decibel sounds and flashes when it detects an outsider's intrusion, which is still very deterrent.
Manipulator: It can close the water and gas valves. For example, it can be linked with a gas sensor to close the gas valve when a gas leak is detected.
Smart cat's eye: Smart cat's eye is not actually a necessary component, but I will probably talk about it here. Smart cat eye can display the situation at the door in real time on the screen, which is actually equivalent to putting a camera at the door. Of course, its functions are more diverse, such as support for face detection, long-term stay alarm and so on. If you have a video matrix in your home, you can also automatically project the picture on a TV or other screen when there are guests visiting.
In addition to the above components, it is conditionally recommended to add UPS and backup network outlets.
In the current situation, the thief also knows a little about the security system. Generally, the power will be cut off when theft enters the room. If there is a UPS, the security system can still work normally, which has a considerable deterrent effect. The backup network exit is mainly to prevent thieves from disconnecting the network before entering the house, but in fact the problem is not too big. There are not many thieves who know how to disconnect the network. Unless the security requirements are very high and the risk of theft is high, a backup network can be considered.
installation methodCamera: As mentioned earlier, the camera is divided into indoor and outdoor. Indoors generally have a base, which can be placed directly or installed on the wall or ceiling with screws. Outdoor cameras are generally large in size and have a wind and rain-proof design. Most of them need to be fixed on the external wall with expansion screws.
Door sensor: Generally, the door sensor can be installed on the door or window with double-sided tape. Of course, if you want to include a drawer or cabinet into security, you can also install the door sensor on it. Of course, it is recommended to install it inside, otherwise it will become a display.
Smart door locks: Smart door locks cannot be installed by ordinary users, but all smart door locks will provide installation services. After receiving it, you can directly contact customer service to make an appointment for on-site installation.
Human infrared sensor: The installation of the human infrared sensor is also very simple. It can be placed directly, fixed with double-sided tape, or fixed with a bracket.
Sound and light alarm: The sound and light alarm is not necessarily an independent component. Some smart home systems directly use the gateway as the sound and light alarm because the gateway can both sound and emit light, such as Xiaomi's gateway. For special audible and visual alarms, generally they can be fixed on the wall.
Gas/smoke sensor: Install it on the ceiling or wall of the kitchen or bathroom. Generally, it should be installed at a higher position, because the density of smoke and gas is relatively small, and it will flow upwards. Of course, it should not be installed too high. If it is too high, it is inconvenient to test regularly.
Flood sensor: placed in a kitchen or sanitary floor where there is a risk of water accumulation.
Smart cat's eye: The installation of smart cat's eye is generally easier. Take off the original cat's eye and install it directly according to the instructions.
Manipulator: Ordinary manipulators can generally be installed at gas or water valves, but I do not recommend this kind of manipulators. If you really want this function, it is recommended to use solenoid valves. In this regard, you can refer to my article "Smart Home System Manipulators" High-reliability alternatives to components".
Transformation exampleA set of about 100 square meters of ordinary apartment, two bedrooms, two halls, one kitchen and one bathroom, the functions are as follows:
1. When someone opens the lock maliciously or violently, the alarm will be automatically reported.
2. When someone enters the room, the sound and light alarm will alarm, and the information will be sent to the user.
3. The camera records the whole process and captures photos when there is movement.
4. When water leaks, gas leaks, smoke, etc. occur indoors, the sound and light alarm can be used to alarm and send information to the owner.
Construction points:1. The camera does not need to be set up in every area, as long as it covers important routes or areas that may enter the house, such as aisles, living rooms, balconies, etc. In addition, it is recommended to use a smart socket to directly control the power of the camera, leave home or turn on the power of all cameras in the alert mode, go home or cancel the alert mode and directly cut off the power of the camera, so there is no need to worry about being secretly photographed at home.
2. The door sensor looks very useful, but its function is similar to that of the human infrared sensor. It is not necessary to install the door sensor for all doors and windows.
3. In addition to detecting water leaks, the water sensor can also be used to detect if you are taking a bath, if you need to add linkage to the bath.
4. The smoke sensor and gas sensor are limited by the principle. It is recommended to test regularly. Generally, the smoke sensor and gas sensor have a test button, and you can press the test regularly.
5. The installation of the smart door lock must match the door, especially some security doors use a large overlord lock body, and the corresponding smart door lock must be selected. Generally, smart door locks should be provided with the size of the safety door lock in use, the photo of the door latch, the direction of the door opening and closing, whether there is a hook, etc. when buying a smart door. Please pay attention to it when buying, and do not place an order directly when you are uncertain. , It may cause the installation to fail.
Take this apartment as an example, the layout of the security system is probably like this
The overall cost of the security system is calculated based on the approximate price of Lumi components.
4 door magnets, unit price 70 yuan
7 infrared human body sensors, unit price 90 yuan
The unit price of a smart door lock is 2,000 yuan
Two sound and light alarms, the unit price is 200 yuan
The unit price of 2 cameras is 200 yuan
A unit price of a smoke sensor is 200 yuan
A unit price of a gas sensor is 200 yuan
2 flood sensors unit price 100 yuan
70*4＋90*7+2000+200*2+200*2＋200+200+100*2=4310 yuan
to sum upThe security system is actually the basic system of the smart home, which can deal with various illegal intrusions, gas leaks, fires, water leaks, etc., and is very practical.
At the same time, the door sensor or infrared sensor in the security system can be shared with other systems. Therefore, although the installation system seems to be not low-cost, the actual cost is not high, and the sense of security it brings is also very good. .
Of course, any security system cannot achieve absolute security. This system can deal with most thieves. However, if you encounter top hackers, even ten sets of such systems are not very useful. However, after thinking about it, top hackers are hundreds of minutes per minute. Wan Shang, is it a bit low cost performance for your system?
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