Radar sensor human sensor switch is easy to use how to choose maintenance precautions

Radar sensor human sensing switch is a kind of radar technology to realize human sensing switch, it can control the circuit by sensing the electromagnetic wave changes around the human body without contact. In recent years, this switch has attracted more and more attention, so is it really good? This article will be introduced in detail from the following aspects.

First, the working principle of radar sensor human sensor switch

The working principle of the human sensor switch is to use microwave radar technology to detect changes in electromagnetic waves around the human body. When the human body enters the range of the radar sensor, the electromagnetic wave around the human body will be absorbed and reflected, resulting in changes in the radar sensor's induction signal. In this way, the radar sensor can determine whether the human body is in the sensing range, so as to achieve the on-off control of the circuit.

Second, the advantages of radar sensor human sensor switch

Non-contact control

The big advantage of the radar sensor human sensing switch is the non-contact control. Unlike traditional mechanical switches, radar sensor switches do not require direct contact with the human body, thus avoiding the spread of bacteria and viruses, and are more hygienic and safe.

High sensitivity

The sensitivity of the radar sensor human sensor switch is very high, it can quickly sense the small movements and changes of the human body, so as to achieve accurate control.

Wide range of application

The application range of radar sensor human sensor switch is very wide, it can be applied to a variety of occasions that need human sensor control, such as home, office, public places and so on.

Energy saving and environmental protection

Radar sensor human sensing switch has the characteristics of energy saving and environmental protection. When the human body leaves the sensing range, the switch will automatically turn off the electrical equipment, thereby avoiding the waste of electrical energy. At the same time, this switch will not produce harmful substances, no pollution to the environment.

Third, the shortcomings of radar sensor human sensor switch

Higher price

At present, the price of the radar sensor human sensor switch is higher than that of the traditional mechanical switch, which is also a factor limiting its wide application.

High requirements on the environment

Radar sensor human sensor switch for the environment is relatively high requirements, if there are interference sources around or electromagnetic wave reflection environment, may lead to misjudgment or can not work properly.

Technical problem

Although the technology of radar sensor human sensing switch has been relatively mature, in some special cases, there may be technical problems, such as signal interference and insufficient stability.

Fourth, how to choose the right radar sensor human sensor switch

When choosing a suitable radar sensor body sensing switch, we need to consider the following points:

Scope of application: Need to choose the appropriate radar sensor switch according to their own environment and actual needs. For example, if it is used in a home, you can choose a switch that is suitable for the home environment; If it is used in an office, you need to select a switch that is suitable for the office environment.

Sensitivity: For some application scenarios that require precise control, a radar sensor switch with higher sensitivity needs to be selected. For example, if you need to control a smart lighting system, then you need to choose a switch with higher sensitivity in order to better adapt to human movements and small changes.

Price: Price is a factor to consider. Although the price of radar sensor human sensing switches has gradually decreased, it is still necessary to choose the right switch according to your budget. If the budget is sufficient, you can consider choosing more products; If the budget is more limited, you can choose some cost-effective brands and models.

Stability: Stability is a factor that needs to be considered when choosing any kind of switch. When choosing a radar sensor human sensor switch, it is necessary to choose a product with high stability to ensure its long-term stability and reliability.

5. Use and maintenance precautions

When using and maintaining the radar sensor human sensor switch, the following points need to be noted:

Installation position: When installing the radar sensor human sensor switch, it is necessary to pay attention to the selection of its installation position. It should be installed at a certain height from the ground to avoid too high or too low position affecting its normal work.

Avoid interference: During use, the existence of interference sources should be avoided as much as possible. For example, avoid placing electronic devices such as mobile phones and computers near radar sensors to avoid interfering with their normal operation.

Cleaning and maintenance: Regular cleaning and maintenance of the radar sensor human sensor switch is the key to ensure its normal operation. You can use a dry cloth to wipe the surface dirt, avoid using chemicals or wet cloth to clean, so as not to affect its normal work.

Check the fault: If the radar sensor human sensor switch fails, it should be checked and dealt with in time. You can check whether the power supply is normal, whether the line is intact, and whether the sensor is working normally. If the fault cannot be rectified, contact professional maintenance personnel.

6. Comparison with other human body induction switches

In addition to radar sensors human sensor switches, there are other types of human sensor switches, such as infrared sensors and ultrasonic sensors. These different types of induction switches have advantages and disadvantages, and need to be selected according to the specific use scenario and personal needs.

Infrared sensor:

Advantages:

(1) The price is relatively low;

(2) Mature technology, good compatibility;

(3) It is more sensitive to people who move at a slower speed.

Cons:

(1) There may be misjudgments about fast-moving people;

(2) The heat source in the environment is sensitive and easy to be interfered with;

(3) After a long time of use, there may be a decline in sensitivity.

Ultrasonic sensor:

Advantages:

(1) More sensitive to objects moving faster;

(2) Strong anti-interference ability;

(3) There is a certain adaptability to the location and size of items in the environment.

Cons:

(1) The price is relatively high;

(2) the technology is relatively new and may not be as compatible as infrared sensors and radar sensors;

(3) For some specific items, the reflection effect may not be as good as radar sensors.

Vii. Summary

To sum up, the radar sensor human sensing switch is a kind of switch with non-contact control, high sensitivity, wide application range, energy saving and environmental protection. However, its price is higher, the requirements for the environment is also higher, and there are technical problems and other shortcomings. When selecting the appropriate radar sensor human sensor switch, it is necessary to consider the application scope, sensitivity, price, stability and other factors. At the same time, in the process of use and maintenance, it is also necessary to pay attention to the installation position, avoid interference, clean maintenance, and check faults. It is also necessary to choose different types of human body sensor switches such as infrared sensor or ultrasonic sensor according to the specific use scenario and personal needs.