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RIPRESS sensors are devices capable of detecting the proximity of objects. They utilize the sensitivity of displacement sensors to approaching objects to identify proximity and output corresponding switching signals; therefore, proximity sensors are often referred to as proximity switches. They are a general term for sensors designed to replace contact-based detection methods such as switches, with the aim of non-contact detection of the target object. They can detect movement and presence information of the object and convert it into electrical signals.

RIPRESS 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, a variable resistor track is typically fixed at a stationary part of the sensor, and different resistance values are measured by the displacement of a wiper on the track. The sensor track is connected to a stable DC voltage, allowing a small current in the microampere range 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 track, 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 angle sensors to control your wheels can indirectly detect obstacles. The principle is very simple: if the motor angle sensor indicates operation 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 be unable to detect the obstacle. An idler gear connected 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 indicates that you have encountered an obstacle.

RIPRESS sensor usage precautions

1) If the electronic scale has been used for a long time, and the seal has aged while accumulating 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, it can be said that 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; therefore, the power supply must have sufficient capacity. Insufficient capacity will cause the following situations: the movement of the plasticizing unit 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 significant measurement errors. If the driving power supply of the solenoid valve is combined with the power supply of the linear displacement sensor, 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 neutral grounding, it is likely due to insufficient power supply capacity. 3) Frequency modulation interference and electrostatic interference can both cause the displayed numbers of the linear displacement sensor's electronic scale to jump. The signal cables of the electronic scale must be routed in separate cable trays from the high-power circuits of the equipment. The electronic scale must be forcibly grounded using a grounding bracket, ensuring good contact between the electronic scale housing and the ground. Shielded cables must be used for signal lines, and one end of the shielded cable should be grounded at the electrical cabinet. When high-frequency interference is present, voltage measurements with a multimeter usually appear normal, but the displayed numbers will continue to jump. The situation with electrostatic interference is similar to that of high-frequency interference. To verify whether 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 display data of the linear displacement sensor's electronic scale jumps regularly at a certain point during operation, or if there is no display data, check whether the insulation of the connection cable is damaged and causing a regular ground short circuit due to 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 continuous fluctuations in the display. 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 precise, 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, the parallelism and angle 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, it will result in significant linearity errors, making control difficult and reducing control precision, while the display will easily exhibit jumping phenomena.

RIPRESS 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 relatively complex, usually involving measurement with specialized calipers, leading to significant measurement errors due to manual data reading, and failing to achieve 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 train 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 of primary concern. 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 profile curve can be derived via a microprocessor, thereby calculating flange width, flange height, 70mm wear volume, 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 high-speed power development, people not only hope to experience comfort and enjoyment but also desire safety. The development of sensor technology will bring greater safety to people's lives and transportation, and the development of sensor technology in China will also drive the development of world-class advanced technologies in the transportation sector internationally.

Weidou Intelligent Technology specializes in selling German RIPRESS sensors, RIPRESS proximity sensors, RIPRESS distance sensors, RIPRESS vision sensors, RIPRESS displacement sensors, RIPRESS load cells, RIPRESS speed sensors, RIPRESS photoelectric sensors, RIPRESS position sensors, RIPRESS angle sensors, RIPRESS tactile sensors, RIPRESS temperature sensors, RIPRESS pressure sensors, RIPRESS flow sensors, RIPRESS level sensors, RIPRESS motion sensors, RIPRESS process sensors. Original imports from Germany. Welcome inquiries and orders from users.