German EDUS SYSTEMTECHNIK sensors, EDUS SYSTEMTECHNIK models, EDUS SYSTEMTECHNIK prices

EDUS SYSTEMTECHNIK sensors, also known as displacement sensors, are a type of sensor used to detect the distance to an object to perform a preset function, and are widely applied. Main products include mobile phone proximity sensors and long-distance measurement sensors, applied in smart belts. Proximity sensors can be classified into optical proximity sensors, infrared proximity sensors, ultrasonic proximity sensors, etc., based on their working principles. Most proximity sensors used in mobile phones are infrared proximity sensors, which have an infrared emitting tube and an infrared receiving tube. When the infrared ray emitted by the transmitting tube is received by the receiving tube, it indicates that the distance is close, and the screen needs to be turned off to prevent misoperation. When the receiving tube does not receive the infrared ray emitted by the transmitting tube, it indicates that the distance is far, and the screen does not need to be turned off. The working principles of other types of proximity sensors are similar; they also judge the distance by the emission and reception of a certain substance, such as ultrasonic waves or light pulses.

EDUS SYSTEMTECHNIK Sensor Classification

1) Linear displacement sensor: The function of a linear displacement sensor is to convert linear mechanical displacement into an electrical signal. To achieve this effect, a variable resistor slide rail is usually fixed at a stationary part of the sensor, and different resistance values are measured by the displacement of the wiper on the slide rail. The sensor slide rail is connected to a stable DC voltage, allowing a small current in microamperes to flow. The voltage between the wiper and the start terminal is proportional to the length of the wiper's movement. Using the sensor as a voltage divider minimizes the requirement for the accuracy of the total resistance of the slide rail, because resistance changes caused by temperature variations do not affect the measurement result. 2) Angular displacement sensor: Angular displacement sensors are applied in obstacle handling: using an angle sensor to control your wheels can indirectly detect obstacles. The principle is very simple: if the motor angle sensor structure is operating but the gear does not turn, it means your machine is blocked by an obstacle. This technology is very simple to use and highly effective; the only requirement is that the moving wheel must not slip on the floor (or slip too frequently), otherwise you will not be able to detect obstacles. Connecting an idling gear to the motor can avoid this problem; this wheel is not driven by the motor but is driven by the movement of the device: during the rotation of the drive wheel, if the idler wheel stops, it means you have hit an obstacle.

EDUS SYSTEMTECHNIK Sensor Usage Precautions

1) If the electronic scale has been used for a long time, and the seal has aged while containing many impurities, water mixtures and oil will seriously affect the contact resistance of the brush, causing the displayed numbers to jump continuously. In this case, the electronic scale of the linear displacement sensor is damaged and needs to be replaced. 2) If the power supply capacity is too small, many issues may arise, so the power supply must have sufficient capacity. Insufficient capacity will cause the following situations: the movement of the molten glue will cause fluctuations in the display of the mold clamping electronic scale, or the mold clamping movement will cause fluctuations in the display of the injection molding electronic scale, resulting in large measurement errors. If the driving power of the solenoid valve and the power supply of the linear displacement sensor are shared, the above situations are more likely to occur. In severe cases, voltage fluctuations can even be measured using the voltage range of a multimeter. If the situation is not caused by high-frequency interference, electrostatic interference, or poor neutrality, it may be due to insufficient power supply capacity. 3) Frequency modulation interference and electrostatic interference can both cause the displayed numbers on the electronic scale of the linear displacement sensor to jump. The signal lines of the electronic scale must be separated from the high-voltage lines of the equipment in different wire trays. The electronic scale must be forcibly grounded using a grounding bracket, ensuring good contact between the housing of the electronic scale and the ground. Shielded cables must be used for signal lines, and one end of the shielded cable should be grounded at the electrical box. When there is high-frequency interference, measurements with a multimeter usually show normal voltage, but the displayed numbers keep jumping. The situation with electrostatic interference is similar to that of high-frequency interference. To verify if it is electrostatic interference, you can short-circuit the cover screw of the electronic scale to some metal part of the machine using a power cord. Once short-circuited, the electrostatic interference will be eliminated immediately. However, it is difficult to eliminate high-frequency interference using the above method. Variable frequency drives and robotic arms often generate high-frequency interference, so you can try stopping the high-frequency drive or the robotic arm to verify if it is high-frequency interference. 4) If the displayed data of the electronic scale of the linear displacement sensor jumps regularly at a certain point during operation, or if there is no display data, check whether the insulation of the connection line is damaged and causing a regular short circuit to ground through contact with the machine housing. 5) The supply voltage must be stable. Industrial voltage requires stability within ±0.1[%]. For example, if the reference voltage is 10V, a fluctuation of ±0.01V is allowed. Otherwise, it will cause significant display fluctuations. However, if the amplitude of the display fluctuation does not exceed the amplitude of the voltage fluctuation, the electronic scale is functioning normally. 6) The alignment of the linear displacement sensor installation must be good, but parallelism allows an error of ±0.5mm, and angularity allows an error of ±12°. However, if both parallelism and angularity errors are large, the displayed numbers will jump. In such cases, parallelism and angularity must be adjusted. 7) During connection, pay close attention. The three wires of the electronic scale must not be connected incorrectly, and the power line and output line must not be swapped. If the wires are connected incorrectly, large linear errors will occur, making control difficult and reducing control precision. The display will also easily exhibit jumping phenomena.

EDUS SYSTEMTECHNIK Sensor Applications

The geometric state parameters of train wheel flanges affect the speed and smoothness of train operation and are crucial for safe train operation. Traditional detection methods are complex, usually involving manual measurement with specialized calipers, leading to significant reading errors and preventing digital management of detection data. With the development of China's railway industry, train speeds are increasing, making precise and rapid inspection and digital management of wheel flange state parameters increasingly important. The flange detector adopts modern sensor technology, a microcontroller processing system, and a concise and stable mechanical structure, enabling convenient and precise continuous rapid measurement of geometric state parameters, achieving digitization of parameters such as flange height and rim thickness. Many sensors are used for detecting flange height, width, rim thickness, etc., with displacement sensors being the primary focus. There are many types of displacement sensors; the novel sensor technology currently used for train wheel flange detection is called laser displacement sensors. Currently, laser triangulation is used for train wheel flange detection, offering high precision for short-distance measurements. The displacement sensor can be directly installed on the track for detection, or a laser reflective displacement sensor can be used as the measuring device. The laser sensor module scans the flange shape along a straight line while recording the entire flange data. The entire flange contour curve can be derived via a microprocessor, thereby calculating flange width, flange height, 70mm wear amount, and wear area. Furthermore, the measured data can be uploaded to a computer to generate a database, utilizing advanced post-processing software for digital management of train wheel flanges. It can not only measure wheelset wear on trains in operation but also sort wheelsets on the production line based on dimensional compliance. The development of transportation relies on detection technology, with instruments and sensor technology being the core of detection technology. In today's era of rapid high-speed power development, people not only hope for comfort and enjoyment but also prioritize safety. The development of sensor technology will bring more safety to people's lives and transportation, and the development of sensor technology in China will also drive the advancement of world-class technologies in the transportation sector internationally.

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