German MAROSO sensors, MAROSO models, MAROSO prices

MAROSO sensors, also known as torque sensors, torsion sensors, torque sensors, and torque meters, are divided into two main categories: dynamic and static. Among these, dynamic torque sensors are also referred to as torque sensors, torque-speed sensors, non-contact torque sensors, and rotary torque sensors. Torque sensors detect the twisting moment on various rotating or non-rotating mechanical components. They convert the physical changes in torque into precise electrical signals. Torque sensors can be used in the manufacture of viscometers and electric (pneumatic, hydraulic) torque wrenches, offering advantages such as high precision, fast frequency response, good reliability, and long service life.

MAROSO sensor classification

1) Laser speed measurement: With the rise of modern precision manufacturing and the need for cost savings, non-contact speed sensors are gradually replacing contact speed sensors. Currently, the most common and high-precision non-contact laser speed sensor on the market is the ZLS-Px aberration speed sensor. The aberration speed sensor has two ports: one emission port that emits a LED light source, and one high-speed imaging port that achieves CCD area high-speed imaging comparison. By comparing images at two points in time within an extremely short period, it determines the distance the object has moved. Combined with internal algorithms, it outputs the object's speed in real time. As shown in the figure, (1) is the LED light emission port, (2) is the camera reception port, (3) and (4) are the terminal blocks, and (5) are the mounting screw holes. (1) The LED light emission port directs laser light at the target object; after reflection, it reaches the (2) camera reception port. Upon receiving the signal, it is transmitted to the signal processor, which calculates the speed using algorithms. The ZLS-Px aberration speed sensor can simultaneously measure speed and length in two directions. It not only detects whether the object has stopped but also identifies its direction of motion. Mount the sensor on a stable bracket to ensure that excessive vibration does not occur during the rotation of the object, allowing for accurate measurement of the rotational angle and speed of the rotating object. 2) Radar speed measurement: Traditional speed measurement mostly involves rotary motion speed and linear motion speed. However, in industrial automation, there are many irregular speed measurements, such as athlete speed measurement, traffic vehicle speed measurement, and golf ball speed measurement. Radar speed sensors can meet these requirements.

MAROSO sensor principle

Transmissive speed sensors consist of a slotted or notched disk, a light source, and a phototube. When the disk rotates with the measured shaft, light passes through the holes or notches to illuminate the phototube. When illuminated, the phototube's reverse resistance drops significantly, outputting an electrical pulse signal. When the light source is blocked by the disk, the phototube's reverse resistance becomes very high, resulting in no signal output. Thus, based on the number of holes or notches on the disk, the rotational speed of the measured shaft can be determined. The usual number of disk holes or notches is unclear in the source, so each revolution of the measured shaft allows the photoelectric converter to output 60 pulse signals. If the time base signal of the electronic counter is set to 1s, the rotational speed of the measured shaft can be read directly. The principle of reflective speed sensors is similar to transmissive ones, converting light changes sensed by the phototube into electrical signal changes, but they obtain pulse signals through light reflection. Typically, reflective material is adhered to the measurement area of the measured shaft to create a reflective surface. Common reflective materials include specialized speed-measuring reflective tape (adhesive tape), though aluminum foil or other reflective materials can also be used. Sometimes, white paint is applied to the measurement area as a reflective surface. The projector and reflective surface must be properly configured, typically maintaining a distance of 5-15M between them. As the measured shaft rotates, the photoelectric element receives pulsating light and outputs corresponding electrical signals to the electronic counter, thereby measuring the shaft's rotational speed. The waveform of the output signal from photoelectric speed sensors is relatively regular, close to a standard square wave, with almost no interference signals generated. However, vibrations in transmissive types can reduce the lifespan of the light source, making them unsuitable for environments with strong vibrations. Reflective types have no mechanical connection with the measured shaft, making them convenient to use.

MAROSO sensor industry applications

1) Modern vehicles are generally equipped with engine control, autonomous driving, ABS, TRC, automatic door locking, active suspension, guidance systems, electronic instruments, and other devices, all of which require vehicle speed signals. Therefore, the accuracy and stability of the output signals from speed sensors will greatly impact these control units. Automotive speed sensors often adopt a Hall-effect structure. Hall speed sensors are magnetoelectric sensors based on the Hall effect, characterized by high sensitivity to magnetic fields, stable output signals, high frequency response, strong anti-electromagnetic interference capability, simple structure, and ease of use. They mainly consist of permanent magnets with a specific number of pole pairs (generally 4 or 8 pairs), Hall elements, rotating mechanisms, and input/output connectors. Their working principle is that when the sensor's rotating mechanism is driven externally, it rotates the permanent magnet, causing periodic changes in the magnetic field passing through the Hall element. This induces voltage changes in the Hall element, which are processed by subsequent circuits to form stable pulse voltage signals as the output of the speed sensor. Key electrical technical parameters for Hall-structure speed sensors include high/low output voltage, duty cycle, period, rise time, fall time, and pulses per cycle. To ensure product performance and reliability, these parameters must be quantitatively tested before leaving the factory. Integrated and intelligent testing systems featuring efficient automatic measurement, software calculation, and graphical or tabular display of results are increasingly favored by automotive speed sensor manufacturers. A comprehensive detection device has been developed for measuring the performance of commonly used Hall-effect vehicle speed sensors. Considering costs, the high-speed counter port of a microprocessor is used for data acquisition from the vehicle speed sensor, while software control handles data calculation and graphical display processing. The completed detection device offers advantages such as high test accuracy, reliable data communication, a user-friendly graphical interface, strong anti-interference capability, simple and intuitive detection processes, and low system development costs. It has good market promotion potential, indicating significant application prospects for speed sensors in vehicle speed detection. 2) Speed sensors for belt conveyors use Hall sensors, which primarily utilize the Hall effect for magnetoelectric conversion. Since the discovery of the Hall effect in 1879, it has undergone more than 100 years of development history. However, its application gained attention and widespread adoption in the 50s of this century due to the rapid development of microelectronics, leading to the continuous development of various Hall elements. China began increasing research on Hall elements in the 20s of the 70 century. After nearly several decades of research and development, it is now possible to produce Hall elements with various performances, such as standard type, high-sensitivity type, low-temperature-coefficient type, temperature/magnetic measurement type, and switch-type Hall elements. Due to the characteristics of Hall sensors—high sensitivity, good linearity, high stability, small size, and high-temperature resistance—they are widely used in non-electrical measurement automatic control, computer devices, and modern military technology across various industrial fields.

Weidou Intelligent Technology specializes in selling German MAROSO sensors, MAROSO proximity sensors, MAROSO distance sensors, MAROSO vision sensors, MAROSO displacement sensors, MAROSO load cells, MAROSO speed sensors, MAROSO photoelectric sensors, MAROSO position sensors, MAROSO angle sensors, MAROSO tactile sensors, MAROSO temperature sensors, MAROSO pressure sensors, MAROSO flow sensors, MAROSO level sensors, MAROSO motion sensors, and MAROSO process sensors. All products are original imports from Germany. We welcome inquiries and orders from users.