Ce blog présentera la définition, types classiques de capteurs domotiques. We also show how they contribute to home automation and how we consider for purchasing.
What Are Smart Home Automation Sensors?
Home automation sensors are devices that automatically sense, measure, and transmit various physical and chemical quantities in the home environment. After they convert these quantities into electrical signals, they can communicate with smart home systems to achieve intelligent indoors management. These sensors play a vital role in home automation systems.
How Do Home Automation Sensors Telecommunicate?
WiFi for Home Automation Sensors
WiFi, also known as wireless-Fidelity, is a widely used Wireless local area network (WLAN) technology. It allows high-speed data transfer among devices in short distances based on the IEEE 802.11 standards. In general, it utilizes radio frequency signals, over the 2.4 GHz and 5 GHz bands, for telecommunication.
Smart home automation sensors can be integrated with WiFi technology. In the aspect of hardware, IoT sensors usually come with built-in WiFi module, which handles communication along WiFi network. These modules can come with the form of separate chips or components integrated on the sensor motherboard. In the other aspect, aiming at supporting the WiFi communication protocol and encryption standards, the sensor runs the related firmware or software, which is responsible for handling the network connection, data transmission and encryption.
In everyday life, when the IoT sensor is activated, it scans the surrounding WiFi network and requests a connection. Alors, the sensor establishes a connection by entering the correct SSID and password. Once connected, IoT sensors can send data in real time to cloud servers or other IoT devices or user terminals.
In addition to sending data, IoT sensors can also receive commands via WiFi networks. Par exemple, sampling frequency integer and operating mode adjustment are the most frequent-used common.
Zigbee for Home Automation Sensors
Zigbee technology, which is based on IEEE 802.15.4 standard, features short distance, low power consumption and low complexity. It is a mature technology that has been applied for more than a decade. It gets its name from the natural phenomenon of bees transmitting information in a particular way. And the name implies that the technology can transmit information efficiently and reliably over short distances just like bees.
During application, the sensor collects environmental data, such as temperature, humidity and light, through the built-in sensor element. Later, the collected data is encapsulated into a Zigbee protocol data frame which contains the sensor type, data value and timestamp. The encapsulated data frame is, then, sent to the target device along the Zigbee network by a direct way or a router. In general, the direct transmission mode is suitable for nodes with short distance communication without relaying. En revanche, the routed transport mode is suitable for communication between distant nodes, because data can be forwarded through relay nodes in the network. When the target device receives the data, it parses and processes it. Typically, in a smart home system, the target device can be a smart home hub controller, a smartphone, or other smart home device.
BLE for Home Automation Sensors
BLE (Bluetooth Low Energy) is a low-power wireless communication technology. It uses GFSK modulation and wireless transmission technology in the 2.4GHz band. Compared with traditional Bluetooth technology, BLE consumes lower power with a smaller size, so it is very suitable for smart home.
Prior to establishing a connection, BLE devices communicate with each other by means of broadcast and scanning. As slave devices, sensors regularly broadcast their presence and available services, while the master device (such as a smartphone) scans to discover these sensors. Once being recognizes, the sensor will connect to the smartphone.
BLE uses GATT (Universal Attribute Protocol) to define data transfer and communication protocols between devices. The sensor encapsulates the collected physical data into attributes in GATT and then sends them to the master device over the BLE link.
In order to further optimize power consumption, BLE also uses technical means such as data compression and batch transmission. These technologies can not only guarantee the quality of data transmission but also reduce the energy consumption in the process of data transmission.
Z-Wave for Home Automation Sensors
AA-Wave is a short-range wireless communication technology developed by Danish company Zensys and designed for smart home and Internet of Things devices. It uses low-power RF (radio frequency) technology and operates in the ISM (Industrial, Scientific and Medical) band of 800-900MHz. En même temps, it supports FSK (frequency shift keying) and GFSK (Gaussian frequency shift keying) modulation. Z-Wave technology is known for its low power consumption, high reliability, and long communication distances.
To use Z-wave home sensors, you first need to have a Z-Wave gateway. On the one hand, it is responsible for creating the network and assigning network addresses (Home ids) and device addresses (Node ids). On the other hand, the smart home automation sensor, as a Slave in the Z-Wave network, establishes contact with the gateway through a specific joining process and obtains its unique address in the network (Node ID).
When the sensor encapsulates the collected data into a format specified by the Z-Wave protocol, it can be sent wirelessly to the controller. In particular, in Z-Wave networks, data transfer is typically in a mesh topology, which allows data to jump between devices to increase network coverage and reliability.
LoRa for Home Automation Sensors
LoRa is a low-power LAN wireless standard developed by Semtech. The name “LoRa” stands for Long Range Radio. With spread spectrum modulation, LoRa technology supports long-distance communication through narrow-band signals, which is distributed across the spectrum.
Feature Comparison
| WiFi | Zigbee | BLE | Z-wave | Lora | |
| Communication Distance & Coverage | Wide Coverage | Short-distance communication: The communication distance of BLE is generally 10-30 meters, which is very suitable for indoor environments such as smart homes. | Long Distance | Long Distance | |
| Coût | Faible | Faible | |||
| Energy Consumption | Faible | Faible | Faible | Faible | |
| Data Transmission Reliability | Collision avoidance policies and fully recognized data transmission modes ensure the reliability of data transmission. | Z-Wave network supports mesh topology, has strong anti-interference ability and self-healing ability, and can ensure the reliability of data transmission. | LoRa technology adopts spread spectrum modulation technology, has strong anti-interference ability, and can transmit data stably in complex wireless environment. | ||
| Compatibility | Wide | Wide | Wide | ||
| Security | The AES-128-based encryption algorithm ensures data transmission security. | LoRa technology supports encrypted transmission, which can protect the security and privacy of user data. | |||
| Large Network Capacity | Zigbee networks support a large number of node connections and are suitable for building large-scale wireless sensor networks. | ||||
| Easy Integration & Deployment | BLE modules are small, low cost and easy to integrate with a wide range of sensors and smart devices. | ||||
| Easy to Scale | Network capacity and coverage can be easily expanded by adding access points (aps) to accommodate network needs of different sizes. |
Must-Have Types for Your Home
Capteur de porte intelligent
Compatible app: Smart Life/Tuya/Google/Alexa/+
Compatible smartphone system: Android4.4/iOs8.0/+
Réseau: Zigbee/Wifi
Pont: Need/No need
Mode alarme: App Alert/Sound/Both
Mode d'installation: Paste/Srew/Both/+
Application site: House door/Window/Garage/Fridge/+
Services: White Label/ODM/OEM
The working principle of the smart home door magnetic sensor is based on the magnetic switching effect of the reed tube. It consists of a wireless transmitting module and a magnetic block. When the separation of the two exceeds a certain distance, the reed tube closes and sends an alarm signal to the host or mobile phone APP. It can be applied to the entrance door, balcony window, safe, intelligent linkage lighting, refrigerator door monitoring.
Capteur de qualité de l'air
Compatible app: Tuya/Smart Life/Apple Home/Alexa/+
Réseau: Wifi/BLE/Zigbee
Monitoring air index: PM2.5/VOCs/CO2/Radon/CO/+
Pont: Need/No need
Mode de reporting des États: Voyant LED multicolore/écran OLED/LCD
Screen/Touching Screen/Online App
Mode d'installation: Wall Hanging/Hook Hole/Table Standing/Magnetic Back/Portability
Source d'alimentation: Battery/Type-C
Services: White Label/ODM/OEM
The smart Air sensor monitors the concentration of various pollutants in the air in real time through a variety of built-in sensors. These sensors convert pollutants in the air into electrical signals, which are then uploaded to cloud servers or user terminal devices through data acquisition and transmission systems. The system uses algorithms to process and analyze the data, generate detailed data reports and air quality assessments, and even issue alerts when air quality exceeds standards. It is widely used in homes, offices, hospitals, schools, to protect people’s health and the environment.
Capteur de mouvement
Detection technology: PIR/Microwave/Ultrasonic/+
Detecting Angle:110-128°
Sensitivity Distance:6-7.9m
Compatible app: Smart Life/Tuya/Alexa/+
Réseau: LoRa/Wifi/Bluetooth/Zigbee
Pont: Need/No need
Triggered action: App Alert/Sound Alert/Illumination/+
Mode d'installation: Wall Mounting/Table Standing/Socket Plugging/Ceiling Mounting
Services: White Label/ODM/OEM
The working principle of the intelligent motion sensor is based on advanced sensing technology and algorithms to sense and capture the motion state of the object through the built-in accelerometer and gyroscope. These sensors convert perceived motion data into electrical and digital signals. The data is processed and analyzed by the internal processor, which finally outputs it as understandable information or instructions.
Humidity And Temperature Sensor
Réseau: Bluetooth/Wifi/Zigbee/+
Pont: Besoin/Pas besoin
Type d'affichage: LCD/LED/sans affichage avec contrôleur intégré
Source d'alimentation: Batterie/Type C/Les deux/+
Étanche: Not Waterproof/IPX4
Mode d'installation: Tenture murale/trou de crochet/table debout/dos magnétique
Services: White Label/ODM/OEM
The working principle of the intelligent temperature and humidity sensor is based on the change of electrical characteristics of the temperature and humidity sensing element. Temperature sensing elements produce resistance or voltage changes with temperature, while humidity sensing elements change their electrical characteristics with humidity changes. These changes are converted into electrical signals, which are processed internally by smart sensors to produce accurate temperature and humidity data. In smart homes, temperature and humidity sensors not only monitor the indoor environment in real time, but also can be linked to air conditioners and humidifiers to adjust indoor temperature and humidity. It enhances people’s living comfort.
Capteur de fumée
Réseau: Wifi/Zigbee/+
Pont: Besoin/Pas besoin
Sensor Type: Photoelectric/Electrochemical/Lonization
Source d'alimentation: Battery/Corded Electric/Hardwired
Alarm: Sound/Grouping-device Sound/Visual Display/LED Light/Smartphone Notification
Services: White Label/ODM/OEM
Smart smoke sensor is an important component of smart home security system, which has the function of real-time monitoring of indoor smoke concentration. Based on the scattering and absorption properties of the smoke, its built-in light source and photodetector measure the smoke concentration. When the smoke concentration exceeds the preset threshold, the sensor will trigger an alarm mechanism to remind the user to take countermeasures in time. It not only has high precision and sensitivity, but also can realize remote monitoring and control.
Key Item Detector
Pont: Besoin/Pas besoin
Nearby Tracking Range:76m/120m/+
Perfect for: Keys/Backpacks/Pockets/Pet/Car/Luggage
Services: White Label/ODM/OEM
Key things detector, a small and convenient intelligent object artifact, was born to solve the problem of daily item loss. Using high-precision sensing technology, it is able to quickly scan the surrounding environment and accurately lock the hidden location of small key items.
What Can Home Automation Sensors Do For Household?
Energy Saving
Temperature and humidity sensors can not only monitor the temperature and humidity in the room in real time, but also automatically adjust the operation of air conditioning or heating through the smart home system. Par exemple, when the indoor temperature reaches the preset limit in summer, the air conditioner is automatically turned on to cool down; In winter, when the indoor temperature is lower than the preset lower limit, the heating is automatically turned on. This automatic adjustment function avoids unnecessary energy consumption.
Entry Guard
When the door and window are abnormally opened, the door and window sensor will immediately trigger an alarm and notify family members through the smart home system. This helps prevent security hazards caused by trespassing and leaving doors and Windows open. En outre, we can install the human infrared sensor PIR in key positions of doors, Windows and corridors. When an intruder is detected, it immediately triggers an alarm system, sending out a sound or light signal. Même, it can push alarm information to the user through the mobile APP to achieve remote monitoring and timely response.
Fire Prevention
Smoke sensors usually use optical sensing or ionic sensing technology to sensitively detect smoke particles in the early stages of a fire. When the smoke concentration reaches a set threshold, the sensor triggers an alarm mechanism. En outre, the temperature sensor can be used as an auxiliary judgment for fire warning. When the ambient temperature rises sharply to the fire warning temperature, it will trigger the auxiliary alarm. The combination of the two shapes improves the fire warning system to improve the accuracy and reliability of the alarm.
Well-being
The temperature sensor can monitor the indoor temperature in real time and feed the data back to the smart home control system. When the temperature is not in the set range, it can link the operation of air conditioning or heating equipment through communication technology. This will ensure that the indoor temperature is kept within a comfortable range. Similarly, humidity sensors are used to monitor indoor humidity to ensure that the air is not too dry or humid. When the humidity is too high, it can link the dehumidifier. On the other hand, when the humidity is too low, it can turn on the humidifier through the Iot network.
Health & Security
Air quality sensors enable real-time monitoring of hazardous substances in indoor air, such as PM2.5, formaldehyde, and carbon dioxide. When it detects that the air quality is below the set standard, it will link the air purifier through the IoT network to improve the indoor air quality. This reduces the risk of harmful substances to your family’s health. En outre, some sensors can also achieve fall assistance monitoring function. This is very suitable for families with elderly people at home, so that they can automatically send out remote help in time after a fall.
Lighting
When light strikes the surface of the light sensor, the light causes the resistance value of the photoresistor to change. This change is converted into an electrical signal and sent to the processor for analysis. According to the data analysis results, the iot system will issue the corresponding dimming instructions. Par exemple, when indoor illumination falls below a preset comfort threshold, the system automatically turns on or turns on the lights; When the illumination is too high, part of the light is turned off or dimmed to avoid glare.
In addition to linkage with smart lights, it can also be linked with smart curtains. Par exemple, when too much light is detected in the room, the smart curtain automatically closes to further reduce the indoor light intensity.
Choosing Proper Home Automation Sensors For Your Home
Compatibility
Compatibility is a crucial factor when choosing a smart home sensor. Pay attention to whether the sensor supports mainstream smart home apps. En outre, we also need to consider whether it can seamlessly connect with the existing smart devices in the home. Good compatibility ensures that sensors are easily integrated into existing smart home systems for unified central management.
Wireless Communication Technology
When choosing a smart home sensor, wireless communication technology is a key consideration. Zigbee, Wi-Fi, Bluetooth these protocols have advantages and disadvantages, so they are suitable for different scenarios. Zigbee is suitable for low-power, low-data rate communication between devices, suitable for building large networks. Wi-Fi provides high-speed data transmission and is suitable for applications that require large bandwidth. Bluetooth is suitable for fast connections between devices in close proximity. En outre, the signal stability and anti-interference ability of the sensor should also be considered to improve the user experience of the smart home system.
Installation and Setup
The ideal sensor should be designed to be easy to install. Whether by pasting, mounting or magnetization, it can be quickly fixed in the desired position without complex tools and professional skills. En même temps, the setup process should be as simple as possible. Par exemple, users can quickly pair and configure devices through an intuitive APP interface, rather than reading lengthy manuals for complex debugging. Such sensors can make home automation closer to the needs of ordinary home users.
Cost-Effectiveness
Cost performance is not only about the price, but also about the balance between the comprehensive performance of the product and the price. In general, users should pay attention to the function, performance stability, service life and price of the sensor for comprehensive evaluation. Although the initial investment of high-quality sensors may be slightly higher, in the long run, the effect of energy saving and improving the quality of life is often more significant.
Quality Assurance Services
So how do you measure its quality? Users should pay attention to the quality system certification of the product manufacturer and the certification of the product itself. Before purchasing, we should also understand the scope of warranty services, return policies and after-sales support.
Summary
To sum up, home smart sensors integrate various technologies in one, so it can, relying on iot networks, play a great help in home life.
Frequently-asked Questions
What are the most popular smart sensors and devices used today?
1.PPS Touch sensor: Precision Perception System (PPS) Touch sensor has a wide range of application prospects in the field of industrial automation, medical diagnosis and robotics because of its high precision and high sensitivity. In smart homes, it may be used to enable finer touch control.
2. Environmental monitoring sensors: There are temperature and humidity sensors, air quality sensors. These sensors can monitor temperature and humidity, PM2.5, formaldehyde and carbon monoxide concentrations in the home environment in real time. Thus, they can provide users with a comfortable living environment and protect the health of their families.
3. Security monitoring sensors: There are door and window sensors, smoke alarms, human infrared sensors. These sensors detect and warn of potential security hazards such as intrusions and fires.
4. Intelligent lighting sensor: By sensing human activity or environmental light changes, it can automatically adjust the brightness of indoor lighting.
Top 3 Factories Skilled At Smart Home Automation Sensors
Honeywell International is a diversified multinational company that is a world leader in technology and manufacturing. Its Sensing and Control division enjoys a high reputation worldwide. Products cover pressure sensors, liquid level sensors, temperature sensors and other types. They are widely used in smart home, industrial automation, aerospace and other fields.
Phixson a Chinese factory. It has an internationally certified ISO9001 quality system and many years of experience in sensor manufacturing and export. The products mainly cover a variety of smart home sensors and devices. It enjoys a reputation in overseas markets for its cost-effective features.
Texas Instruments (TI) is a leading global semiconductor company focused on the development, manufacture and sale of analog circuits and digital signal processing (DSP) chip products. Although Texas Instruments does not directly produce home smart sensors as the main business, but its deep accumulation in semiconductor and sensor technology. This enables it to provide high-performance, reliable sensor solutions for the smart home market.
