Fiber Optic Sensor

A: Garantta fiber optic sensor is a functional sensor. Because of the following characteristics of optical fiber, it is widely used in a large number of occasions. 

1. Optical fiber is thin and soft, with high light conductivity, and is easy to install in a small space. 

2. Optical fiber has the characteristics of anti-electromagnetic interference and can work reliably in complex electromagnetic environments. 

3. Optical fiber has electrical insulation and chemical stability and can be used in explosion-proof and other occasions. 

4. Quartz glass optical fiber has corrosion resistance and can be made into diffuse reflection or through-beam detection products for high-temperature environments. 

5. The transmission speed of light is fast, which is suitable for detecting high-speed moving workpieces or objects. Garantta can customize various high-precision optical fiber tubes and optical fiber sensors for installation in small spaces, high-temperature environments, corrosive gases and other special occasions according to customer needs.

A: Different fiber tubes are used with amplifiers to form different types of fiber sensors; Garantta fiber sensors are divided into twelve categories. 

•  Coaxial fiber 

1. The middle of the coaxial fiber is a transmitting fiber, and the surrounding is a receiving fiber. Even if the detection object is detected from different directions, the error is very small. 

2. There are a variety of fiber core arrangements. Please choose different types of optical fibers according to your needs. 

 

•  Right-angle fiber 

1. Right-angle fiber tube, used to detect IC pins; 

2. New patented product; 

3. A variety of models and types are available. 

4. Meet special requirements such as high speed, high precision, energy saving, and high temperature resistance. 

 

•  Opposite-beam fiber 

1. The amplifier is equipped with an optical fiber to detect the presence or absence of opaque or translucent objects on the assembly line; 2. New patented product; 

3. A variety of models and types are available. 

4. Meet special requirements such as high speed, high precision, energy saving, and high temperature resistance. 

 

•  Side-view optical fiber 

1. Side-detection optical fiber tube, suitable for use in narrow installation spaces; 

2. New patented product; 

3. Multiple models and types are available. 

4. Meet special requirements such as high speed, high precision, energy saving, and high temperature resistance. 

Matrix optical fiber. The optical fiber core has high density and high detection accuracy, and can be used for distinguishing large and small objects, and correcting the deviation of products or strips. 

 

•  Window optical fiber 

1. Window optical fiber is used for product counting and detection, mainly used in the packaging industry. 

2. Used for product counting, detection, and material drop detection. 

Bracket optical fiber is used for product detection, counting, and positioning on the assembly line, which can save installation space. Extra-fine optical fiber can detect small IC chip pins and micro IC chips 

 

•  Diffuse reflection optical fiber 

1. Can be used to detect the marking of the strip, and distinguish by different colors of different reflectivity. 

2. New patented product; 

3. Multiple models and types are available. 

4. Meet special requirements such as high speed, high precision, energy saving, and high temperature resistance.

A: In fact, a fiber optic sensor is a sensor that transmits optical signals through optical fiber cables and converts optical signals into electrical signals through a converter. Generally, a fiber optic sensor is composed of a fiber optic probe, a fiber optic cable, and a fiber optic amplifier. These three parts work together to achieve the purpose of detection. Among them, the fiber optic amplifier is actually a display unit. The fiber optic sensor can be directly connected to the PLC without connecting to the fiber optic amplifier, and it can also receive and convert signals in the same way. The principle of the fiber optic sensor is to send the light from the light source to the modulator. After the measured parameter and the light in the modulation area interact with each other, the light changes. We generally call this changed light signal light. By detecting the signal light, the purpose of detection is achieved. This process is very fast and accurate. For some very small objects, such as needles, pen cores, pen tips, screws, and other precision components, fiber optic sensors can also easily detect.

A: Optical fiber consists of a core at the center and a cladding with different refractive indices. When light enters the core, it enters the core while repeatedly being totally reflected at the boundary surface with the cladding. After passing through the inside of the optical fiber, the light emitted from the end face is diffused at an angle of about 60° and irradiated onto the detection object.

A: 1. Appearance size refers to the shape and size of the optical fiber component, etc., and is selected according to the customer's installation space restrictions. 

 2. The fiber core has different characteristics due to different types of cores, and is selected according to the detection distance and the size of the detection object required by the customer. 

 3. The bending radius refers to how many mm the radius of the optical fiber component can be bent to, and it can still be used without obstacles while meeting the detection distance performance. For places where assembly is more difficult, a model with a smaller radius is selected. 

 4. Ambient temperature: The temperature range within which the optical fiber component can be used. When the ambient temperature is high, it is ideal to choose a heat-resistant type. 

 5. The length of the optical fiber component. The longer the length, the farther it can be installed from the optical fiber amplifier. The above are the main key factors for selecting the optical fiber sensor core. Please make a specific selection based on the actual situation and actual analysis.

A: Fiber optic sensors are widely used in many fields such as semiconductors, lithium batteries, pharmaceuticals, chemicals, automobile manufacturing, medicine, catering, hardware, textiles, packaging, etc. Granta has a full range of fiber optic sensors, tailored for different applications, with excellent performance. It can be freely matched with more than 100 series of fiber optic cables, and a variety of sensor heads with plastic and glass optical fibers are available, making it easy to realize the application detection of small objects and complex environments.

A: (1) Anti-electromagnetic interference: The frequency of electromagnetic radiation is generally much lower than that of light waves, so the optical signal transmitted in the optical fiber is not affected by electromagnetic interference.

(2) Good electrical insulation performance, safe and reliable: The optical fiber itself is made of dielectrics and does not require a power drive, so it is suitable for use in flammable and explosive oil, gas, and chemical production.

(3) Corrosion resistance and stable chemical properties: Since the material used to make optical fibers, quartz, has extremely high chemical stability, optical fiber sensors are suitable for use in harsh environments.

(4) Small size, light weight, and plastic geometry.

(5) Low transmission loss: Remote monitoring can be achieved.

(6) Large transmission capacity: Multi-point distributed measurement can be achieved.

(7) Wide measurement range: Temperature, pressure, strain, stress, liquid level, displacement, acceleration, etc. can be measured.

A: (1) High sensitivity. Since light is an electromagnetic wave with a very short wavelength, its optical length can be obtained from the phase of light. Taking the fiber optic interferometer as an example, since the diameter of the optical fiber used is very small, it is easily affected by a small mechanical external force, or its optical length will change when the temperature changes.

(2) Anti-electromagnetic interference, electrical insulation, corrosion resistance, and intrinsic safety. Since fiber optic sensors use light waves to transmit information, and optical fibers are electrically insulating and corrosion-resistant transmission media, and are safe and reliable, they can be conveniently and effectively used in various large-scale electromechanical, petrochemical, mines and other harsh environments with strong electromagnetic interference and flammable and explosive environments.

(3) Fast measurement speed. Light propagates at the fastest speed and can transmit two-dimensional information, so it can be used for high-speed measurement. The analysis of radar and other signals requires an extremely high detection rate, which is difficult to achieve using electronic methods. High-speed spectrum analysis using the diffraction phenomenon of light can solve this problem.

(4) Large information capacity. The measured signal is carried by light waves, and the frequency of light is very high, so the frequency band it can accommodate is very wide. The same optical fiber can transmit multiple signals.

(5) Applicable to harsh environments. Optical fiber is a dielectric that is resistant to high voltage, corrosion, and electromagnetic interference. It can be used in harsh environments where other sensors are not suitable.