「ZIASIOT」
Linear Displacement Sensor
Endowing Devices with ‘Millimeter Intelligence’!
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Core Principle
The core application principle of the linear displacement sensor is to act as a “bridge” between the mechanical world and electronic control systems, accurately converting the physical position changes of an object in a linear direction into a standardized electrical signal in real-time through precise physical or electromagnetic effects.Its working process can be summarized in three stages: “Perception, Conversion, Output”.
First, the sensor directly “perceives” every minute change in linear motion by being firmly connected to the object being measured through its internal movable components (such as potentiometric brushes, LVDT magnetic cores, or magnetostrictive magnetic rings) or non-contact sensing units (such as the reading head of a grating scale).
Next, the sensor uses its specific internal mechanism to convert this physical displacement: for example, the potentiometric type changes resistance to create a voltage divider; LVDT changes the electromagnetic coupling induced voltage difference by moving the magnetic core; magnetostrictive technology calculates the time difference between ultrasonic pulses and magnetic fields to locate; while the grating scale counts the bright and dark pulse signals generated by precise etched lines.
Ultimately, this conversion process results in an electrical signal output that is strictly proportional to the displacement amount, whether it is an analog voltage or current, or digital pulse or bus data, all of which can be recognized by the backend PLC, controller, or display instrument, thus achieving precise measurement, real-time feedback, or closed-loop control of the object’s position, meeting the needs for monitoring and managing linear displacement in various scenarios from industrial automation, machine tool processing to scientific experiments.
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Application Scenarios
Industrial Automation and Manufacturing
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CNC Machine Tools:
Position Feedback: Used to detect the precise position of components such as tool holders, worktables, and spindles, achieving closed-loop control to ensure processing accuracy.
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Injection Molding Machines:
Mold Position Control: Precisely controls the opening and closing position and speed of the mold.
Screw Position: Monitors and controls the advancement position of the injection screw to ensure the accuracy of the injection volume.
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3D Printers:
In high-end industrial 3D printers, used for precise positioning of the X, Y, and Z axes to improve printing accuracy and repeatability.
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Sheet Processing Equipment:
Bending Machines: Real-time detection of the downward pressure depth of the upper mold to ensure accurate bending angles.
Shearing Machines: Controls the downward position of the blade to ensure cutting length.
Hydraulic and Pneumatic Systems
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Construction Machinery:
Excavators: Monitors the extension length of the boom, arm, and bucket cylinders to achieve precise trajectory control and digging depth control.
Cranes/Lifting Platforms: Real-time monitoring of the boom’s angle and extension length, or the lifting height of the platform, ensuring operational safety and stability.
Rollers: Monitors the amplitude of the vibrating wheel.
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Hydraulic Servo Systems:
In high-precision controlled hydraulic systems, serves as a core feedback element, forming closed-loop control for applications such as shaking tables and material testing machines.
Process Control and Measurement
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Valve Opening Control:
In large hydropower stations, chemical plants, and oil pipelines, used for precise monitoring and control of the opening and closing positions of gate valves and control valves.
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Level Measurement:
Indirectly measures the height of liquid or solid materials in tanks or pools by measuring the displacement of a float or weight.
Transportation and Aerospace
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Aerospace:
Aircraft: Monitors the positions of control surfaces such as flaps, ailerons, and landing gear.
Satellite Antennas: Controls the deployment and pointing accuracy of antennas.
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Automotive Industry:
Active Suspension Testing: Used in R&D and testing to measure the dynamic displacement of the suspension.
Throttle Position: Some electronic throttle systems use displacement sensors to detect pedal depth.
Transmission Testing: Measures the displacement of the shift actuator.
Research and Testing Fields
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Material Testing Machines:
Used to measure the deformation and displacement of samples during tensile, compression, and bending tests, serving as a key sensor for mechanical performance testing.
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Vibration Measurement and Analysis:
Measures the dynamic displacement changes of structures or components in a vibrating environment.
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Structural Health Monitoring:
Monitors the minute displacements and settlements of bridges, dams, and high-rise buildings under load and temperature changes.
Medical Equipment
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Medical Robots:
Such as surgical robots, used to control the precise, minimally invasive movements of robotic arms.
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Diagnostic and Treatment Equipment:
CT/MRI Scanning Beds: Precisely controls the feeding position of the patient bed.
Ventilators: Monitors the displacement of pistons or bellows.
Prosthetics and Rehabilitation Equipment: Used to simulate joint movements and provide feedback.
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Ziasiot
Linear Displacement Sensor
The internal and external surfaces of the Ziasiot linear displacement sensor are specially treated to work under high-speed, low-wear conditions. The flexible buffer bearing at the front of the sensor can overcome minor lateral stresses of the transmission rod, ensuring normal operation of the sensor. The conductive material fixation and structural design of the sensor ensure reliable operation even under the harshest conditions, suitable for position detection in various types of equipment, such as injection molding machines, die-casting machines, rubber machines, shoe machines, EVA injection machines, hollow blow molding machines, woodworking machinery, hydraulic presses, etc.
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High Operating Speed
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Resolution greater than 0.01mm
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Service life up to 100×10⁶ times
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Excellent linearity, up to ±0.04%
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Applicable for direct and absolute measurement of displacement and length
Phone: +86-21-37635502 +86-21-64930577
Service Hotline: 400 821 0137
Chinese Website: www.ziasiot.net
English Website: www.ziasiot.com
