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Application of optical fiber sensor on automatic assembly line

Automatic assembly line is a machine conveyor system that can realize the automation of product production process. By using a set of conveyor machines and equipment that can automatically process, detect, load and unload, and transport, a highly continuous and fully automated production line can be formed to achieve product production, thereby improving work efficiency, reducing production costs, improving processing quality, and quickly changing products. It is the basis for the competition and development of the machinery manufacturing industry, It is also an effective path for the transformation and upgrading of the machinery manufacturing industry, and also a major measure to achieve high-quality economic development.

smartphone SKD assembly line

In the automatic assembly line, there are many kinds of instruments and meters. They are the regulating system of the automatic assembly line, and are instruments or equipment used to detect, measure, observe, and calculate various physical quantities, material compositions, physical parameters, etc. All these instruments, meters or equipment need various sensors to play their roles, among which optical fiber sensors are commonly used.

The optical fiber cable used in the automatic assembly line is composed of a bundle of glass fibers or one or several synthetic fibers. Optical fiber can conduct light from one place to another, even around corners. It works by passing light through an internal reflective medium. The light passes through the optical fiber material with high refractive index and the inner surface of the sheath with low refractive index, thus forming a reflective transmission of light in the optical fiber. The optical fiber consists of a core (high refractive index) and a sheath (low refractive index). In the optical fiber, the light is continuously reflected back and forth to generate total internal reflection, so the light can pass through a curved path.

Optical fiber sensor, referred to as optical fiber sensor, is a kind of sensor with rapid development at present and has been widely used in automatic assembly line production. Optical fiber can not only be used as optical wave transmission medium in long-distance communication applications, but also when light propagates in optical fiber, the characteristic parameters (such as amplitude, phase, polarization state, wavelength, etc.) characterizing light waves will change indirectly or directly due to external factors (such as temperature, pressure, magnetic field, electric field, displacement, etc.), so optical fiber can be used as a sensing element to detect various indicators to be measured.

Optical fiber is a cylinder with multilayer dielectric structure, which is made of quartz glass or plastic. In automatic assembly line production, the following matters shall be paid attention to when using optical fiber sensors:

 

  1. Installation: 

In the design and production of automatic assembly line, photoelectric sensors must not interfere with each other, and they must maintain a certain Z small distance. The Z small distance is mainly determined by the sensor sensitivity. For sensors using optical fiber, this distance is mainly determined by the type of optical fiber used. Therefore, you cannot specify a specific value.

  1. Positioning.

For reflective sensors, first place the receiver at the desired position and fix it. Then align the transmitter with the receiver as precisely as possible. For reflective sensor, first place the reflector at the required position and fix it. Cover the reflector so that only the center part is exposed. Install the reflective sensor in the proper position to make it work normally. After Z, remove the cover on the reflector. Diffuse sensor: align the sensor with the object to make it work normally. In order to ensure its normal and reliable operation, a working margin must be reserved. Due to the influence of dust, change of reflectivity of objects or aging of emission diodes, the working margin will gradually decrease over time, or even cannot work normally. Some automated pipeline sensors are equipped with LED (green) display, which lights up when 80% of the effective working range of the sensor is used. Other automatic pipeline sensors are equipped with a yellow LED display to indicate alarm when the working margin is insufficient. These can be used to prevent the occurrence of automatic pipeline misoperation.

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Hongdali provide different kinds of conveyors, like roller conveyors, curve conveyors, belt conveyors, inclined conveyors… At the meantime, hongdali also provide assembly line for home appliance. We are looking agents allover the world to be our agent for wholesale conveyors, wholesale conveying system, wholesale working conveyors, wholesale belt conveyors systems,assembly lines agent, we supply conveyors and assembly lines accessories, like motors, aluminum frames, metal frame, running conveyor belt, speed controller, inverter, chains, sprockets, rollers, bearing… also we supply engineers technical supports, and provide the installation, maintain, training for you. Hongdali is always looking forward friends from all over the world to work with us.

Hongdali main products are assembly line, the automatic assembly line, the semi-automatic assembly line, roller conveyor type assembly line, belt conveyor type assembly line. Of course, Hongdali also provide different kinds of conveyor, green pvc belt conveyor, powered roller conveyor, non-power roller conveyor, gravity roller conveyor, steel wire mesh conveyor, Teflon conveyor with high temperature, food grade conveyor.

Hongdali have experienced engineer team and mechanical engineer team to support oversea projects. Our engineer team will help you to plan your factory based on your layout and guide you how to place the assembly line and conveyor. For installation, we will send engineer team to guide you how to install and train you how to use and maintain for the conveyor and assembly line. 


Post time: Dec-16-2022