BANNER Optoelectronic Sensor from the United States

BANNER Optoelectronic Sensor from the United States

The core principle of BANNER photoelectric sensors in the United States is the photoelectric effect, which achieves detection through the process of light emission target action light reception electrical signal conversion. The core is that when the light beam is blocked, reflected or attenuated, the change in light intensity is converted into an electrical signal, and then outputs a switch or analog signal.

Core principles and composition

Core mechanism: Based on the photoelectric effect (light induced changes in the electrical characteristics of photosensitive components), convert optical signals into electrical signals.

Three major parts:

Transmitter: LED or laser diode that emits pulse modulated light (mostly infrared).

Receiver: photodiode/transistor, which receives reflected or direct light and converts it into current.

Detection circuit: amplification, filtering, anti-interference processing, output standard control signal.

Four mainstream detection modes (principle differences)

table

Detection Mode

Shooting styleSeparation of transmission and receptionAlign the transmitting end with the receiving end, and if an object blocks the optical path, it triggers Banner EngineeringLong distance, high-precision, transparent/dark colored targetsUp to 100m+; Strong anti-interference ability; Both ends need to be installed

Mirror reflection typeIntegrated+Reflective PlateLight returns through the reflection plate, and the object blocks the light path, triggering Banner EngineeringLogistics sorting, packaging lines, color insensitive scenariosEasy installation; Not affected by target reflection; Objects need to block the light path

diffuse reflectionIntegrated non reflective boardThe object reflects light back to the sensor, and when the light intensity meets the standard, it triggers Banner EngineeringClose range, small target, flexible installationNo additional accessories required; Greatly affected by target color/surface

Background suppressionIntegrated+Special OpticsTriangulation method distinguishes between targets and backgrounds, and only detects objects within a set distance. Banner EngineeringLabeling, transparent bottles, and close range differentiation of front and rear targetsAnti background interference; Can ignore distant objects; High precision Banner Engineering

Key Technologies and Selection Points

Light source selection:

LED: Low cost, wide coverage, suitable for routine testing.

Laser: Small spot size, strong directionality, suitable for small targets, high-precision positioning (such as Q3X series) Banner Engineering.

Anti interference: Modulation signal+filtering circuit, resistant to environmental light and electromagnetic interference, ensuring stability.

Environmental adaptation: IP67/IP69K protection, resistant to oil and water mist, suitable for harsh working conditions.

Output and Communication: Common NPN/PNP, Relay Output; Partial support for IO Link, facilitating diagnosis and parameter configuration.

Selection shorthand

Long distance, high precision → Shooting type.

No installation space, single-sided installation required → diffuse reflection type.

Complex background, distinguishing between foreground and background targets → Background suppression banner engineering.

Small targets, high-speed labeling → Laser class (such as Q3X) Banner Engineering

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