1. What is a laser displacement sensor?
Laser displacement sensors are sensors that use laser skills to measure. It consists of a laser, a laser detector, and a measurement circuit. Laser sensors are the new type of measurement. It can accurately measure the orientation, displacement and other changes of the measured object non-touch.
It can measure displacement, thickness, oscillation, spacing, diameter and other fine measurements. The laser has the excellent characteristics of good straightness, and the same laser displacement sensor has higher accuracy than the ultrasonic sensor we know. However, the laser generation equipment is relatively complex and large, so the application scale of the laser displacement sensor is more demanding.
2. Classification of the working principle and characteristics of laser displacement sensors
(1) Working principle: The laser displacement sensor can accurately measure the azimuth, displacement and other changes of the measured object without touch, and is mainly used to detect the displacement, thickness, oscillation, spacing, diameter and other measurements of the object.
According to the measurement principle, the principle of laser displacement sensor is divided into laser triangulation measurement method and laser echo analysis method, laser triangulation measurement method is generally suitable for high-precision, short interval measurement, and laser echo analysis method is used for long-distance measurement, the following are two measurement methods of laser displacement sensor principle.
Trigonometry
The laser emitter shoots the visible red laser to the surface of the measured object through the lens, and the laser scattered by the surface of the object passes through the receiver lens and is accepted by the internal CCD linear camera, which can "see" this light point under different viewpoints according to different intervals. Based on this viewpoint and the known interval between the laser and the camera, the DSP calculates the interval between the sensor and the object being measured.
At the same time, the beam is simulated and digitally processed in the orientation of the receiving element, and analyzed by the microprocessor to calculate the corresponding output value, and output the standard data signal proportionally within the user-set imitation amount window. If a switching output is used, it is turned on within the set window and cut off outside the window. In addition, the analog and switching outputs can be set independently of the detection window.
The maximum linearity of the laser displacement sensor using the triangulation measurement method can reach 1um, and the resolution can reach the level of 0.1um. For example, ZLDS100 type of sensor, it can achieve 0.01% high resolution, 0.1% high linearity, 9.4KHz high response, and adapt to harsh environments.
Echo analysis
Laser displacement sensors use the principle of echo analysis to measure the interval to achieve a certain degree of accuracy. The inside of the sensor is composed of a processor unit, an echo processing unit, a laser emitter, a laser receiver and other parts. The laser displacement sensor emits one million laser pulses per second through the laser emitter to the detector and returns to the receiver, and the processor calculates the time it takes for the laser pulse to meet the detector and return to the receiver to calculate the interval value, which is the output of the average of thousands of measurements. This is the so-called pulse moment method. The laser echo analysis method is suitable for long-interval detection, but the measurement accuracy is lower than that of the laser triangulation method, and the farthest detection interval can reach 250m.
(2) Product characteristics: laser LED, visible light, reflective grade is divided into 2 levels
Multi-range communication methods such as dual communication, triple switch, and double imitation
The reaction times were 200 μs, 500 μs, 1 ms, and 2 ms, respectively
The spot is small, JGWY6-30NP-S, the spot is only 0.1x1mm
Detection accuracy is up to 0.1%F.S
The detection scale is 30mm, 50mm, 85mm, 120mm, and 250mm
5 different resolutions: 0.5μS, 1.5μs, 2.5μs, 8μs, 20μS
|
More on that
|
The detection method of high-frequency pressure sensors
1. Pressurization detection
The method of checking the order is: supply power to the sensor, blow the air guide hole of the high-frequency pressure sensor with the mouth, and use the voltage level of the multimeter to detect the voltage change at the output end of the sensor. If the relative sensitivity of a high-frequency pressure sensor is significant, this change can be significant. If the silk ...
|
|
Installation and selection of high-frequency pressure sensors – Turck
1. Estrangement
Do not press or touch the barrier as this may damage or alter its calibration, especially on low pressure scale types.
2. Accessories and hardware
With the right pressure, additional fittings and hardware, make sure you have the right thread type and size. If the demand ...
|
|
Classification of magnetic sensors – Turck
Any sensor that uses magnetic properties and changes in magnetic flux is called a magnetic sensor. There are two common types of magnetic sensors: piezomagnetic sensors and magnetoelectric sensors. The two types of sensors are quite different in terms of operating principle and range of use.
...
|
|
Introduction to the types of proximity switches – Turck
1. Eddy current proximity switch
This type of switch is sometimes called an inductive proximity switch. It is the use of conductive objects to produce eddy currents inside the object when approaching the proximity switch that can generate an electromagnetic field. This eddy current reacts to the proximity switch and causes the internal circuit parameters of the switch to change, ...
|
|
Detection of load cell damage – Turck
1. Observe whether the appearance of the sensor is deformed and cracked. If this happens, contact the sensor manufacturer to replace the sensor.
2. Find the sensor connection terminal of the weighing controller (weigher) and measure the sensor connection circuit.
In general, the excitation voltages (EXC+ and EX...
|
|
Angular displacement sensor in action – Turck
The sensor uses a specially shaped rotor and wire-wound coil to simulate the linear displacement of a linear variable differential transducer (LVDT), which has high reliability and functionality, and the rotary motion of the rotor shaft produces a linear output signal that moves around the factory-preset zero position ± 60 degrees (120 in total). This...
|
|
Introduction to piezoresistive pressure sensors – Turck
What is the principle of piezoresistive pressure sensors?
Piezoresistive sensors refer to sensors made of the piezoresistive effect of monocrystalline silicon materials and integrated circuit technology. After the monocrystalline silicon data is subjected to the action of force, the resistivity changes, and the proportional force can be obtained according to the measurement circuit.
|
|
Are AC and DC contactors interchangeable?
1. The AC contactor can be used as a substitute for the DC contactor in an emergency, and the suction time can not exceed 2 hours (due to the poor heat dissipation of the AC coil than the DC, which is determined by their different structures).
|
|
Turck's digital tour in Chongqing
As a super city in western China, Chongqing is not only a charming "Internet celebrity city", but also the "largest" industrial city with 45 industrial zones. In order to further promote the digitalization of manufacturing enterprises in the western region and focus on local vertical industries, the digital upgrade of factories across the country has solved the problem of ...
|
|
Turck's pressure sensors are prone to malfunctions
** is the pressure, the transmitter can't lose it. In this case, look at the pressure connector to see if it leaks or is clogged, if it admits not, look at the wiring and see if the power supply is normal, simple pressure to determine if the output has changed, or if there is an output at the zero point of the sensor, ...
|
|
Turck offers a wide range of solutions at CEMAT
Intelligent production is a popular category that the world attaches great importance to, and it is also the main direction of the transformation and upgrading of China's manufacturing industry. One of the important links is how intelligent logistics can serve intelligent production, and the equipment of production materials can be seamlessly connected with intelligent production. CeMAT is held under the theme of "Smart ...
|
|
The load cell measures the magnitude of the external gravity
(1) The shape of the elastomer element should be as regular as possible, generally rectangular and circular. During the measurement process, conventional elastomers can be identified by sensors more easily and accurately.
(2) The surface process should be precise and the density should be very uniform. Elastomers as part of the main force ...
|
|
Introduction to the characteristics of Turck's current transformers
The current transformer plays an important role in the electrical, so the requirements for some characteristics of the current transformer are also relatively high, in order to get used to the sensitivity and speed of electrical action.
First, according to the equivalent circuit diagram of the current transformer ...
|
|
The cause of signal distortion measured by the sensor is Turck
In what ways does the signal fail to manifest Allah? Why is the signal unstable? Generally, the output signal is unstable due to transient temperature changes that cause the bias voltage to fluctuate and fluctuate. How to deal with it? A sensor with a stable bias voltage is used for processing.
...
|
|
Turck sensors detect any position of the piston in the cylinder
Turck's UNT products detect the orientation of pistons in all standard cylinders, replace most T-slot magnetic sensors on the market today, and can be installed on other cylinder shapes with a wide range of device attachments. It has a compact and compact form factor, which allows it to be fitted ...
|
|
The robust OPC UA RFID modules have a high degree of protection
The OPC UA communication standard is channel-agnostic, making TBEN-L OPC UA easy to integrate ERP, MES or cloud architectures as well as RFID architectures in controllers. In addition, authorization and integrated security protocols protect the system from unauthorized access and manipulation.
...
|
|
Precautions should be taken when using tensile pressure sensors – Turck
A tensile pressure sensor is a device that converts a physical signal into a measurable electrical signal output. Precautions for Nala pressure sensors:
1. The appearance of the equipment should be as flat as possible, without oil or film, and the equipment should have sufficient strength and rigidity, ...
|
|
Principle of resistance strain gauge of pressure sensor
The operating principle of metal resistance strain gauge is the phenomenon that the resistance value changes due to mechanical deformation due to the strain resistance adsorbed on the matrix data, which is commonly known as the resistance strain effect. The resistance value of a metal conductor can be indicated by the following formula:
where: ρ-- ...
|
|
BGS principle for Turck sensors' photoelectric sensors
When the photoelectric switch is used, it is usually seen in the operation manual that the operating principle of Turck sensors is BGS, so what is BGS? What kind of work does it depend on?
The full English name of the so-called BGS principle is background suppression, that is, the meaning of the set press, so ...
|
|
Turck's RFID module now features FLC
Turck's TBEN-S-RFID block I/O modules are now available as a field logic controller
Ahead of SPS IPC Drives 2017 (Industrial Automation in Nuremberg, Germany), Turck has expanded its TBEN-S-RFID ...
|
|
Contact
working hours
