A rangefinder is an instrument used to measure distances. It is widely used in many fields. The following are its common features:
Classification by measurement principle
Laser rangefinder
High precision: Using the high directivity and high monochromaticity of lasers, the measurement accuracy can usually reach millimeters or even higher. For example, it can accurately measure distances in construction and industrial measurement.
Wide measurement range: It can measure distances from a few centimeters to several kilometers. For example, in outdoor surveying and remote monitoring, it can easily measure long-distance targets.
Fast measurement: The measurement speed is fast. Generally, a measurement can be completed in just a few seconds or even less, which improves work efficiency and is suitable for occasions where distance data needs to be obtained quickly.
Ultrasonic rangefinder
Non-contact measurement: Distance is measured by transmitting and receiving ultrasonic signals. There is no need to directly contact the object being measured, which can avoid damage to the object being measured. It is often used in fields such as liquid level measurement and object positioning.
Relatively low price: Compared with some other distance measurement technologies, ultrasonic rangefinders have low costs and high cost-effectiveness. They are suitable for general measurement occasions where accuracy requirements are not extremely high.
Affected by the environment: The propagation speed of ultrasound in the air is greatly affected by environmental factors such as temperature, humidity, and wind speed. The measurement accuracy may vary in different environments. It is usually suitable for indoor or relatively stable environments.
Infrared rangefinder
Strong anti-interference ability: Infrared signals have certain anti-interference ability and are not easily affected by factors such as electromagnetic interference. They can ensure the stability and accuracy of measurements to a certain extent. They are often used for close-range measurements and indoor positioning.
Good concealment: Infrared light is invisible and is not easily detected when using an infrared rangefinder for measurement. It has good concealment and is suitable for some special measurement needs, such as military reconnaissance and security monitoring.
Moderate measurement accuracy: Its measurement accuracy can generally meet measurement tasks with medium precision requirements, such as interior decoration and furniture measurement, and the accuracy is usually at the centimeter level.
Divided by application scenario
Outdoor rangefinder
Adapt to complex environments: It has functions such as waterproof, dustproof, and anti-fall, and can work normally in harsh natural environments, such as outdoor activities such as field exploration, mountaineering, and golf, and can resist the erosion of wind, rain, sand, and dust.
Long-distance measurement: usually has a longer measurement distance, which can meet the needs of large-scale outdoor measurement, such as measuring the height of a mountain, the width of a river, etc.
Good portability: The design is lightweight and portable, which is convenient for users to carry and use in outdoor activities, and will not bring too much burden to users.
Indoor rangefinder
High-precision short-distance measurement: Mainly used for distance measurement in indoor environments, such as house decoration, furniture placement, etc., the accuracy requirements for short-distance measurement are high, generally accurate to millimeters or centimeters.
Easy operation: The operation is relatively simple, usually just press a button to complete the measurement, and the interface design is also relatively intuitive, which is convenient for users to quickly obtain measurement data indoors.
Small and flexible: The small size makes it easy to use in small indoor spaces, and can easily measure the distance of various corners and narrow areas.
Industrial rangefinder
High reliability: In industrial production environments, long-term stable operation is required, with high reliability and stability, and can adapt to harsh industrial environments such as high temperature, high pressure, and strong electromagnetic interference.
Multiple measurement functions: In addition to the basic distance measurement function, it may also have multiple functions such as angle measurement, area measurement, volume measurement, etc. to meet the diverse measurement needs in industrial production, such as in machinery manufacturing, automobile production and other fields.
Integration with other systems: It can be integrated with industrial automation systems, control systems, etc. to realize automatic data transmission and processing, and improve production efficiency and automation.