In principle, photoelectric sensors have a wider detectable surface than other non-contact sensors, such as capacitive sensors, ultrasonic sensors, etc. Compared to mechanical switches, it is more reliable, the using life is longer. In the field of automated equipment, Photoelectric switches also have a wider range of applications. However, there are still some weaknesses in optoelectronic technology. For example, how to achieve stable detection of different materials (such as translucent/transparent, shiny/dark surface), how to avoid the influence of dust and pollutants, how to It makes the installation of the user easier and so on. In terms of cost, the cost of the photoelectric switch is higher than that of the proximity switch, and it is also a factor that hinders the more common application of the photoelectric switch.
In order to solve these problems, the future development trend of photoelectric sensors can be divided into two directions. One direction is to improve the versatility of the components through the flattening strategy, thereby further reducing the production cost general-purpose photoelectric switch.The other direction is modular production, which allows for flexible combinations between different modules, providing customers with a wide range of infreard detection options. The photoelectric sensor consists of a light source, a lens, a package casing, a CI circuit and a signal conductor. Generally, there are at least two light sources, nine or more sensing modes, two or more package housings, and various mounting methods, outputs, and wire lengths. Different combinations. For most customers, photo-electric switches with L E D light source and B PT resin housing to meet the package technology of IP66 have been able to meet the requirements. The use of the same platform makes it possible to produce large quantities of production, minimizing the cost of the general-purpose components and reducing the threshold for customers to use photoelectric sensors.
And some customers have higher and more special testing requirements, and modular production can easily customize customers without significantly increasing costs. The required products, such as the replacement of L E D as a laser diode, can be focused on a single point, so that a beam of farther transmission distance can be obtained, satisfying the customer's need for long distance detection above 3 m. And when it comes to detecting subtle features, good focus is also important. If it is necessary to align the fine features from a few meters away, lasers must be used, and such applications are more common in the electronics industry. If the outer casing is replaced by a high-grade stainless steel (for example, S U S 3 1 6 ) L, an environmentally-friendly photoelectric sensor for use in the food and beverage industry, which uses a wide range of acid-base detergents, can be produced.