In the current era of rapid technological development, intelligent products are constantly being updated, bringing a lot of convenience to our lives. Among them, the induction faucet, as an innovative bathroom product, has gradually become popular in public places and households. Traditional induction faucets mostly use infrared sensing technology. However, with the evolution of technology, radar sensing technology is emerging, bringing about a new transformation in the field of faucet sensing.
Limitations of Traditional Infrared Induction Faucets
Infrared sensing technology has played an important role in the development of induction faucets. Its working principle is based on infrared reflection. When the user's hand enters the infrared sensing area of the faucet, the infrared rays emitted by the infrared emitting tube are blocked by the hand and reflected to the infrared receiving tube. After being processed by the microcomputer, the signal is transmitted to the pulse solenoid valve, thereby controlling the water flow of the faucet. When the hand leaves the sensing range, the solenoid valve stops working, and the faucet is closed. To a certain extent, this technology has achieved the functions of intelligent water conservation and hygiene, and has been widely used in densely populated places, such as train stations, bus stations, airports, hospitals, and other public places.
However, infrared sensing technology is not perfect. Its biggest limitation is poor penetrability. When the front of the infrared sensing device is blocked, the detection function may fail. For example, during use, if other objects accidentally block the sensing area, the faucet may not work properly. Moreover, due to the characteristics of the infrared detection principle, the detection end of the infrared sensing device usually needs to be exposed outside the product. This requires opening holes on the surface of the product, which not only affects the appearance integrity of the product but may also have a certain impact on the product structure. In addition, the infrared sensing device is easily interfered by environmental factors, such as strong light irradiation, temperature changes, etc., which may lead to a decrease in sensing sensitivity and misjudgment.
Working Principle of Radar Sensing Technology
Radar sensing technology is an advanced technology that detects targets by sending and receiving electromagnetic waves. In the application of faucet sensing, the working process of the radar sensor mainly consists of three key steps: transmission, reception, and signal processing.
First, the radar sensor uses a transmitter to generate a beam of electromagnetic waves, usually using electromagnetic waves in the microwave band, such as electromagnetic waves in the X band, K band, or millimeter wave band. These electromagnetic waves have the characteristics of high frequency, high directivity, and long wavelength, enabling them to effectively propagate in space and interact with target objects.
When the emitted electromagnetic waves encounter a target object, such as the user's hand, phenomena such as reflection and scattering will occur. A part of the energy is absorbed by the target object, and another part of the energy is reflected back. The receiver of the radar sensor is responsible for capturing these reflected electromagnetic waves and converting them into electrical signals.
Finally, the radar sensor conducts a series of complex processing and analysis on the received electrical signals. In this process, operations such as filtering, amplification, adjustment, and demodulation are performed on the signals to accurately extract key characteristic information such as the position and speed of the target object. Through the analysis of this information, the radar sensor can accurately determine whether an object has entered the sensing area, and then control the water flow and closing of the faucet.
Advantages of Radar Sensing Technology in Faucet Sensing
Powerful Penetrability and Stability
Compared with infrared sensing technology, the electromagnetic waves of radar sensing technology have extremely strong penetrability and can easily penetrate non-metallic materials such as ceramics and wood. This means that even if there are some obstacles in front of the radar sensing device, it can still work normally, greatly improving the stability of sensing. In practical use scenarios, for example, in the sinks of public restrooms, the surrounding environment may be complex with various items present, but the radar induction faucet is not affected by these factors and can work continuously and stably, providing users with a reliable using experience.
Precise Sensing Effect
Radar sensing technology can accurately detect the position and motion state of target objects. In the application of faucet sensing, it can accurately determine whether the user's hand has entered the sensing range and can distinguish between different actions, such as simple hand reaching and complex handwashing actions. Through the precise analysis of the sensing signals, the radar induction faucet can achieve more intelligent control. For example, when it detects that the user is performing a handwashing action, it can maintain continuous water flow; when it detects that the hand has left a certain distance, it will close the faucet, avoiding the problems of misjudgment and frequent opening and closing that may occur in traditional induction faucets, effectively improving the water conservation effect and using convenience.
Flexible Installation Method
Due to the penetrability advantage of radar sensing technology, the sensing device does not need to be exposed on the surface of the product, and there is no need to open holes for installation on the faucet or sink. This makes the installation method of radar induction faucets more flexible and diverse. The sensing device can be installed in hidden positions such as under the sink or inside the wall, which not only does not affect the appearance beauty of the product but also effectively protects the sensing device and prolongs its service life. At the same time, this flexible installation method also provides more possibilities for product design and innovation, and can better meet the needs of different users and places.
Good Anti-interference Ability
Radar sensing technology has strong anti-interference ability against environmental factors. It is not easily affected by environmental factors such as strong light, temperature changes, and humidity, and can work stably in various complex environments. In environments such as outdoor public restrooms and bathrooms with high temperature and humidity, the radar induction faucet can still maintain precise sensing performance and provide stable services to users. This advantage makes radar sensing technology widely applicable in different scenarios and capable of adapting to various harsh usage environments.
As an advanced sensing technology, radar sensing technology has brought a lot of innovation and transformation to the field of faucet sensing. With its powerful penetrability, precise sensing effect, flexible installation method, and good anti-interference ability, it makes up for the deficiencies of traditional infrared sensing technology and shows great advantages in practical applications. It is believed that in the future, radar induction faucets will be applied in more scenarios with these advantages, bringing more convenience and comfort to our lives.
