What parts are included in smart home system?

The smart home system is mainly composed of a control host (also called a smart gateway), sensors, detectors, remote controls, smart switches, smart sockets, and home networks.

  1. Control host

In a smart home system, the control host is like a translator, which “translates” information such as different communication protocols, data formats, or languages, then transmits the analyzed and processed data, and then sends it out through the wireless network. The control host is the bridge between the home network and the external network and is an essential part of the smart home.

The control host is not only a traditional router. It also has wireless forwarding and wireless receiving functions, which convert all external signals into wireless signals. When people operate remote control equipment or wireless switches, the control host can output the signals again. Complete a series of operations such as lighting control, electrical control, scene-setting, security monitoring, property management, or sending home security management operations to remote users’ mobile phones or computers through outdoor Internet or GSM (Global System for Mobile Communications) networks. The control host is the “command center” of smart home system.

2. Sensors and detectors

Sensors and detectors are just like human sense organs. They convert the information they see, hear, and smell into electrical signals and transmit them to the control host. The primary sensors and detector products in smart homes include temperature and humidity integrated sensors, combustible gas sensors, smoke sensors, human infrared detectors, glass break detectors, wireless curtain detectors, wireless door magnetic detectors, etc.

Temperature and humidity integrated sensors

Temperature and humidity are closely related to people’s life, so the integrated temperature and humidity sensor is invented. The temperature sensor refers to the equipment that can convert the temperature and humidity into electrical signals that can be easily measured and processed. Temperature sensors on the market generally measure temperature and relative humidity.

Combustible gas sensors

Combustible gas sensors are detectors that respond to single or multiple combustible gas concentrations. Currently, combustible gas sensors mainly include two types: catalytic and semiconductor. The catalytic combustible gas sensor uses the refractory wire resistance change to measure the concentration of combustible gas. When the combustible gas enters the detector, it will cause an oxidation reaction on the platinum wire’s surface. The heat generated will make the temperature of the platinum wire increase. The resistivity of the platinum wire will change, thereby measuring the concentration of combustible gas. Semiconductor type detectors work by using a gas-sensitive semiconductor. When combustible gas enters the sensor, the semiconductor resistance decreases, and the value decreases correspond to the combustible gas concentration.

Smoke sensor

Smoke sensor is to achieve fire prevention by monitoring the concentration of smoke. It is a device that converts the concentration of smoke in the air into an output signal with specific corresponding relationship. Smoke sensor is divided into photoelectric smoke sensor and ionic smoke sensor.

Human infrared detector

The human body is generally around 37°C, so it emits infrared rays with a wavelength of about I0μm. The human body infrared detector is very sensitive to infrared radiation with a wavelength of about 10μm. It works by detecting the infrared rays emitted by the human body.

Glass break detectors

Glass broken detector is one of the security detectors in smart home. It is used to detect whether the window glass in the house is damaged. If someone breaks the glass and invades the room illegally, it will send out an alarm signal. According to the different working principles, the glass breaking detector can be divided into two types: single technology glass detector and double technology glass breaking detector. The double technology glass breaking detector can be divided into two types: 1. sound and vibration combination 2. detect infrasound wave and high-frequency sound of glass breaking at the same time.

Wireless curtain detector

Wireless curtain detector is widely used in smart home because of its low price and stable technical performance. A wireless curtain detector is a passive infrared detector, which is usually installed beside or on the top of the window. When someone enters the detection area, the detector will automatically detect the human activities in the area. If dynamic movement is found, the wireless curtain detector will send an alarm signal to the control host.

Wireless door magnetic detectors

Wireless door sensor detectors are widely used in smart home security and door and window control. It is a device used to detect whether doors, windows, drawers, etc. have been illegally opened or moved. It does not issue an alarm by itself. Send a coded alarm signal to the control host. When the control host receives the alarm signal, it will pass the signal to the alarm, and the alarm will go off.

3. Smart panel and socket

Smart panels and smart sockets are products born with the concept of smart home and Internet of Things.

Smart panel

At present, there are two kinds of intelligent panels in the market: intelligent lighting panel and intelligent curtain panel. There’re two kinds of intelligent light panel: intelligent light switch panel and dimming panel. Its primary function is to realize the switch control and brightness adjustment of intelligent light. Users can control the on and off of lamps as long as they touch the panel with their hands.

Smart socket

Smart sockets can be used in smart homes to control the on and off of electrical loads for electrical appliances through a computer, mobile phone or remote control. For example, a smart socket that performs functional operations through an app on a smart phone. Its most basic function is to remotely turn on and off the current through the mobile phone app. When the electrical appliance is not working, the smart socket’s power supply loop can be turned off to ensure safety and energy-saving. The smart socket can also be set to switch the power of household appliances at a time. It’s convenient, energy-saving, and prevents electric fires.

4. Wireless remote control

Wireless remote control is a kind of device used to control the machine remotely. There are two kinds of wireless remote control on the market: the infrared remote control mode, commonly used in household appliances and the widely used radio remote control mode for anti-theft alarm equipment, remote control of doors and windows, and remote control of automobiles. The wireless remote controller can control one function with one button and manage multiple tasks with one button.

5. Home network

Home network is a family information platform integrating home control network and multimedia information network. It connects computers, telephones, household appliances, security control system, lighting control and WAN.