Safety light curtain/grating sensor is a key safety device in industrial automation, which is intended to protect workers from accidental damage to mechanical equipment. This sensor ensures the safety and efficiency of the production environment through accurate detection and rapid response. The following will introduce the principle, application field, advantages and selection factors of safety light curtain sensor in detail.
The safety light curtain sensor consists of two parts: a light projector and a light receiver. The light projector emits modulated infrared light, the light receiver receives these light, and a protective net is formed between the two. When an object enters the protective net and blocks the light, the receiving state of the light receiver changes. Through the internal control circuit, the light receiver will output a signal in the output part, which can be used to control the emergency braking of related equipment, such as machine tools, presses and other equipment to stop running immediately, so as to avoid personnel injury or equipment damage.
industrial production
In the mechanical processing industry, such as stamping machinery, shearing equipment, metal cutting equipment, automated assembly lines, automated welding lines, etc., can prevent operators from entering dangerous areas due to operational errors and causing safety accidents. For some dangerous areas, such as places with toxic, high pressure, high temperature and other dangerous factors, the safety light curtain sensor can also play a good role in safety protection.
Logistics field
In the material handling and conveying system, the transportation process of materials can be monitored in real time. Once an object approaches or enters a dangerous area, such as a person accidentally approaching the running conveyor belt, the system will promptly alarm or stop the transportation to ensure the safety of the working environment.
Transportation
It is widely used in subway, high-speed rail, airport and other places to detect whether passengers or staff have crossed the safety line, issue an alarm in time and take corresponding measures to ensure the safety of passengers and staff.
High sensitivity:
It can quickly respond to the occlusion of light by objects and issue an alarm in time.
Strong anti-interference ability:
It can effectively resist various interference factors in the environment, such as electromagnetic interference, light interference, etc., to ensure the accuracy and stability of detection.
Easy installation:
Usually the structure is simple, the installation process is relatively simple, and no complicated wiring or configuration is required.
Long service life:
Generally, it can reach more than several years, and the maintenance cost is low.
Wide range of applications:
It can be applied to a variety of industries and different work scenarios to meet the security protection requirements in different scenarios.
Security level:
Select the appropriate safety level according to the degree of danger of the equipment to people. For example, the safety level 4 is selected for occasions with heavy casualty risk, and the safety level 2 is selected for occasions with general risk.
Optical axis spacing:
According to the specific protection requirements and the size of the detected object, the appropriate optical axis spacing is selected. The smaller the optical axis spacing, the higher the detection accuracy, and the higher the detection range and sensitivity of the safety grating.
Protection height:
To ensure that the protective height of the safety light curtain can cover the dangerous area, to prevent people or objects from above or below into the dangerous area without being detected.
