German TERSID sensor TERSID model TERSID price

TERSID sensor precisely measures the actual displacement of the detected product by detecting the absolute position of the movable magnetic ring through internal non-contact measurement and control technology; the high precision and high reliability of this sensor have been widely applied in thousands of practical cases. Since the movable magnetic ring that determines the position has no direct contact with the sensitive element, the sensor can be used in extremely harsh industrial environments and is not easily affected by oil stains, solutions, dust, or other contaminants. In addition, the sensor uses high-tech materials and advanced electronic processing technology, so it can be used in high-temperature, high-pressure, and high-vibration environments. The sensor output signal is the absolute displacement value; even if the power is interrupted and reconnected, data will not be lost, and there is no need to re-zero. Since the sensitive element is non-contact, even with continuous repeated detection, it will not cause any wear to the sensor, which can greatly improve detection reliability and service life.

TERSID sensor classification

1) Laser speed measurement: With the rise of modern precision manufacturing and the demand for cost savings, non-contact speed sensors will gradually replace contact speed sensors. Currently, the non-contact laser speed sensors with higher precision and most commonly used on the market are ZLS-Px aberration speed sensors. The aberration speed sensor has two ports: one emission port that emits LED light source; and one high-speed photography port that achieves CCD area high-speed imaging comparison. By comparing images at two time points within an extremely short period, the distance the measured object moves is determined, and combined with the algorithm inside the sensor, the speed of the measured object is output in real time. As shown in the figure, (1)LED light emission port, (2) camera reception port, (3), (4) terminal blocks, (5) fixing screw holes. (1)LED light emission port emits laser towards the measured object, which reflects to (2) camera reception port. After receiving the signal, it is transmitted to the signal processor, which calculates its speed through algorithms. ZLS-Px aberration speed sensors can simultaneously measure speed and length in two directions. They can not only detect whether the measured body has stopped but also detect the movement direction of the measured body. Fix the sensor on a stable bracket to ensure that the rotating object does not produce excessive vibration during rotation, thereby measuring the rotation angle and rotational speed of the rotating measured body. 2) Radar speed measurement: Traditional speed measurement mostly involves rotary motion speed measurement and linear motion speed measurement. However, there are many irregular speed measurements in real-world industrial automation, such as athlete motion speed measurement, traffic vehicle speed measurement, and golf ball speed measurement. Radar speed sensors can meet these requirements.

TERSID sensor principle

A transmissive speed sensor consists of a slotted or apertured disk, a light source, and a phototube. When the disk rotates with the shaft under test, light can only reach the phototube through the holes or slots. When the phototube is illuminated, its reverse resistance is very low, thus outputting an electrical pulse signal. When the light source is blocked by the disk, the reverse resistance of the phototube is very high, and there is no signal output at the output terminal. In this way, based on the number of holes or slots on the disk, the rotational speed of the shaft under test can be measured. The number of holes or slots on the disk is usually set to sixty, so that for each revolution of the shaft under test, the photoelectric converter outputs 60 pulse signals. If the time base signal of the electronic counter is set to 1s, the rotational speed of the shaft under test can be read directly. The principle of a reflective speed sensor is the same as that of a transmissive one; it converts changes in received light into changes in electrical signals via a phototube, but it obtains pulse signals through light reflection, typically by adhering reflective material to the measurement area of the shaft under test to form a reflective surface. Commonly used reflective materials are special speed-measuring reflective paper tapes (adhesive tapes); aluminum foil or other reflective materials can also be used as substitutes; sometimes white paint can be applied to the measurement area to serve as a reflective surface. The emitter and the reflective surface must be properly configured, typically with a distance of 5-15M between them. When the measured shaft rotates, the photoelectric element receives pulsating light, and outputs the corresponding electrical signal to the electronic counter, thereby measuring the rotational speed of the measured shaft. The waveform of the output signal from the photoelectric speed sensor is relatively regular, close to a standard square wave, with almost no interference signals generated. However, for the transmissive type, vibration reduces the service life of the light source, so it is not suitable for use in conditions with strong vibration. The reflective type has no mechanical connection with the measured shaft, making it convenient to use.

TERSID sensor industry applications

1) Modern cars 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 signal from the sensor measuring vehicle running speed will have a great impact on these control units. Automotive speed sensors mostly adopt a Hall-effect structure. A Hall speed sensor is a magnetoelectric sensor based on the Hall effect, featuring high sensitivity to magnetic fields, stable output signal, high frequency response, strong anti-electromagnetic interference capability, simple structure, and ease of use. It mainly consists of permanent magnets with a specific number of magnetic pole pairs (generally 4 or 8 pairs), Hall elements, a rotating mechanism, and input/output connectors. Its working principle is that when the sensor's rotating mechanism rotates under external drive, it drives the permanent magnet to rotate. The magnetic field passing through the Hall element undergoes periodic changes, causing the output voltage of the Hall element to change. Subsequent circuit processing forms a stable pulse voltage signal, which serves as the output signal of the speed sensor. The main electrical technical parameters of Hall-structure speed sensors include: output signal high voltage, low voltage, duty cycle, period, rise time, fall time, and number of pulses per cycle. To ensure product performance reliability, these parameters must be quantitatively tested before leaving the factory. Test systems featuring integration and intelligence, efficient automatic measurement, software calculation, and graphical or tabular display of test results are increasingly favored by automotive speed sensor manufacturers. This is a comprehensive testing device developed for performance measurement of commonly used Hall-effect vehicle speed sensors. Based on cost considerations, the high-speed counter port of a microprocessor is used for data acquisition from the vehicle speed sensor, and software control is used to calculate and graphically display the acquired data. The completed testing device offers advantages such as high testing precision, reliable data communication, a user-friendly graphical interface, strong anti-interference capability, simple and intuitive testing process, and low system development cost. It has good market promotion potential, so speed sensors will have huge application prospects in vehicle speed detection. 2) Speed sensors for belt conveyors use Hall sensors, which are sensors that utilize the Hall effect to achieve magnetoelectric conversion. The Hall effect was discovered in 1879 and has a development history of more than 100 years. 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 to increase research on Hall elements in the 20s of the 70th century. After nearly several decades of research and development, it is now possible to produce Hall elements with various performances, such as ordinary type, high-sensitivity type, low-temperature-coefficient type, temperature-and-magnetic-measuring type, and switch-type Hall elements. Due to the characteristics of Hall sensors, such as high sensitivity, good linearity, high stability, small size, and high-temperature resistance, they have been widely used in various industrial fields, including non-electrical quantity measurement and automatic control, computer devices, and modern military technology.

Weidou Intelligent Technology professionally sells German TERSID sensors, TERSID proximity sensors, TERSID distance sensors, TERSID vision sensors, TERSID displacement sensors, TERSID load cells, TERSID speed sensors, TERSID photoelectric sensors, TERSID position sensors, TERSID angle sensors, TERSID tactile sensors, TERSID temperature sensors, TERSID pressure sensors, TERSID flow sensors, TERSID level sensors, TERSID motion sensors, TERSID process sensors. Original imports from Germany. Welcome customers to inquire and order.