Smart home 24g millimeter wave radar sensor module human body static real-time induction, the traditional infrared sensor, when the infrared movement is higher than the ambient temperature, can detect, can not detect. Simply put, the current infrared sensor can only detect the movement of the human body, but can not detect whether the human body is stationary in a space, if asleep or stationary, the real state of existence of the infrared sensor cannot be sensed. To explain with a simple example, when the user is resting on the sofa at home, the lights may be switched off, the air conditioning may be switched off; This smart scenario, in which you focus on your phone and turn off the toilet lights and exhaust fans, can cause problems for users.
In smart home, compared with the widely used infrared motion sensing technology, there are great limitations on the environment and the physical characteristics of the measured target. 24g millimeter wave radar sensor module has higher motion detection accuracy, which can determine the direction, speed, distance, position and so on of the moving object. With the reduction of cost and the development of algorithms, it has become a new trend that radar technology is replaced by PIR technology. Simply put, the human body is at rest, but there will be some small body movements, such as turning a book, playing with a mobile phone, typing, etc., which can be detected by millimeter-wave radar.
In fact, due to the late start of domestic millimeter wave radar industry and less accumulation of core technologies, the key millimeter wave core is almost monopolized by global semiconductor companies. Therefore, it is of great significance to break through the technical bottleneck of high frequency millimeter-wave radar. At present, millimeter wave radar has begun to be applied on a large scale in China, such as household appliances and other built-in applications.
More accurate judgment, 24g millimeter wave radar sensor module can achieve more accurate linkage, information collection needs high-precision sensors, accurate information collection is the guarantee of intelligence, so in application scenarios, the more information collection level, the more accurate data, the better linkage experience, which is also the industry insiders believe that the future intelligent experience depends on high-precision AI sensors to be promoted. If held in a fixed position or just twitching, the sensor sensors can't actually sense the presence of the human body.
24g millimeter wave radar sensor module has the following advantages:
Beautiful appearance design: millimeter wave penetration is good, can penetrate plastic. For the terminal, you can have a good design appearance, a better integrated appearance.
Fretting detection: indoor personnel are stationary in the room, but there are local body movements, including finger movements, arm shaking, talking, shaking head and other movements, and even fluctuations caused by regular breathing in the chest. Accurate presence judgment can be achieved according to the micro-Doppler information.
Not afraid of interference all-weather: for the detection of objects, do not be afraid of any color, even transparent glass, clothes, wood, plastic, as long as there is movement, millimeter wave radar can also detect. Not afraid of temperature and smoke gas, also not afraid to install in damp bathrooms and smoke kitchens. The surface is exposed to strong light, is not clean for a long time or has stains and dust, the effect is small.
Large detection range: the viewing Angle is much wider than infrared, the detection range is wider, mainly large area installation, but also requires less equipment, cost saving.
Good privacy detection with the same precision may require a camera, but 24g millimeter wave radar sensor module does not invade privacy.
Green energy saving: Linkage control equipment automatic start and stop, reduce unnecessary power waste, switch and no impact. Compared with the energy consumption of household lamps, 24g millimeter wave radar sensor module has high frequency, low power and low energy consumption.
Multiple detection data: comprehensive parameters such as speed, attitude and Angle are detected simultaneously.
Continuous tracking: Through continuous frequency modulation, you can continuously track the family target, even to the stationary target can keep tracking without losing.
3D posture positioning: Behavioral posture, standing, sitting, lying can be imaging radar. Millimeter wave radar can measure direction Angle and pitch Angle of the target at the same time, so as to obtain abundant point information of the measured target. By using the information obtained, the distribution state of the target in three-dimensional space (horizontal, vertical and height) can be obtained, and the posture of the target (such as standing, sitting, lying and falling) can be judged according to the relationship of the target in three-dimensional distribution, as well as the height change and time relationship of the target, so as to distinguish the needs of adults and children, people and pets.
Unlike cars, which count a variety of demands, and unlike cars, which are mostly linear in motion, homes are often complex in motion, measuring, and multi-point complex scatters.
The following basic scenarios are those that can be easily realized by 24g millimeter wave radar sensor module, while high-order scenarios are those that cannot be easily realized by infrared sensors.
Basic scenario: Lights, air conditioning and other equipment are always on when there are people, and automatically turn off when the person leaves the room.
High level scenario:
? Crouch and watch your phone while lighting and exhaust systems work.
? Take a nap on the couch with the air conditioning running and the lights dimmed.
? When sleeping in the bedroom, the active intelligence can judge the sleep state of the human body, and automatically adjust the curtains to enter the sleep mode and wake up mode.
? In view of the emergency situation of the elderly, such as abnormal respiration rate, fall posture judgment, if the child does not get up within 1 minute, the active intelligence can immediately remind the child to know and call the emergency contact number.
? According to the radar wave calculation of the room area, plus people's posture and position judgment, control the air volume of the air conditioning, air Angle, adjust the appropriate volume of the speaker.
? Children, pets left alone at home, timely warning, camera tracking care.
? Regular sampling and deployment of the target personnel data reported by each radar are converted into whole-house coordinate data. The whole-house coordinate data of 24g millimeter wave radar sensor module is recorded in the whole-house model. It is not only simple to perceive whether there are people, but also to judge whether to implement household scene, air supply by the whole air conditioner and air supply by fresh air system through the number of people.
? In the process of whole-house tracking, determine whether cross-domain events occur according to the loss/increase of target personnel in the gate line area of each detection zone. In case of cross-domain events, the information of cross-domain target personnel will be inherited to the corresponding new points in the new district, and the tracking lighting and other scenes will be implemented.
? For example, turn on the viewing mode, detect the position of people through the 24g millimeter wave radar sensor module, and automatically adjust the lights, curtains, screens and speakers to form surround-3D sound playback, bringing immersive viewing experience.
? Judging from the direction of the radar, the leaving/returning scene used in the entryway to determine whether a person is in or out.
? Use cameras, temperature and humidity sensors, smoke sensors and other devices to combine spatial perception with a variety of information to create a variety of information integrated perception space.
