German TONNIC sensors, TONNIC models, TONNIC prices

TONNIC sensors, also known as linear sensors, are linear devices based on metal induction. The function of the sensor is to convert various measured physical quantities into electrical signals. In production processes, displacement measurement is generally divided into two types: measuring physical dimensions and measuring mechanical displacement. Depending on the form of transformation of the measured variable, displacement sensors can be divided into analog and digital types. Analog types can be further divided into property-based and structural types. Commonly used displacement sensors are mostly analog structural types, including potentiometric displacement sensors, inductive displacement sensors, synchros, capacitive displacement sensors, eddy current displacement sensors, and Hall effect displacement sensors. An important advantage of digital displacement sensors is that they facilitate direct input of signals into computer systems. These sensors are developing rapidly and their applications are becoming increasingly widespread.

TONNIC sensor classification

1) Laser speed measurement: With the rise of precision manufacturing and the demand for cost savings, non-contact speed sensors are gradually replacing contact speed sensors. Currently, the most common non-contact laser speed sensor with high precision on the market is the ZLS-Px chromatic aberration speed sensor. The chromatic aberration speed sensor has two ports: one transmitting port, emitting LED light source; one high-speed imaging port, achieving CCD area high-speed imaging comparison, by comparing images at two time points within an extremely short period, determining the distance the measured object has moved, combined with the algorithm inside the sensor, real-time output of the measured object's speed. As shown in the figure, (1)LED light emitting port, (2) camera receiving port, (3), (4) terminal blocks, (5) mounting screw holes. (1)LED light emitting port emits laser towards the measured object, reflected to (2) camera receiving port, after receiving the signal, it is transmitted to the signal processor, calculating its speed through algorithms. The ZLS-Px chromatic aberration speed sensor can simultaneously measure speed and length in two directions, not only detecting whether the measured object has stopped, but also detecting the direction of movement of the measured object. Mount the sensor on a stable bracket, Ensure that the rotation of the rotating object does not generate excessive vibration, so that the angular displacement and rotational speed of the rotating test object can be measured. 2) Radar speed measurement: Traditional speed measurement mostly involves measuring rotational motion speed and linear motion speed, but in real-world industrial automation, there are many non-regular speed measurements, such as athlete speed measurement, traffic vehicle speed measurement, golf ball speed measurement, and other scenarios; radar speed sensors can meet these requirements.

TONNIC 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 no signal is 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 therefore, for each revolution of the shaft under test, the photoelectric converter can output 60 pulse signals. If the time base signal of the electronic counter is taken as 1s, The rotational speed of the measured shaft can then be read directly. The operating principle of reflective speed sensors is the same as that of transmissive types, converting 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 measured shaft to form a reflective surface. Commonly used reflective materials include dedicated speed-measurement reflective paper tape (adhesive tape), which can also be replaced with reflective materials such as aluminum foil, and sometimes white paint can be applied to the measured area to serve as a reflective surface. The projector and the reflective surface must be properly arranged, with a typical distance of 5-15M between them. When the measured shaft rotates, the photoelectric element receives pulsating illumination, and outputs corresponding electrical signals to an electronic counter, thereby measuring the rotational speed of the measured shaft. The waveform of the output signal from photoelectric speed sensors is relatively regular, close to a standard square wave, with virtually no interference signals generated. However, vibration in transmissive types reduces the service life of the light source, making them unsuitable for use under conditions with strong vibration. Reflective types have no mechanical connection with the measured shaft, making them convenient to use.

TONNIC 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 affect 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 magnetic field sensitivity, stable output signals, 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 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 is driven externally, it rotates the permanent magnet, causing periodic changes in the magnetic field passing through the Hall element. This induces changes in the output voltage of 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 output voltage, low output voltage, duty cycle, period, rise time, fall time, and pulses per period. To ensure product performance reliability, these parameters must be quantitatively tested before factory shipment. Test systems featuring integration and intelligence, efficient automatic measurement, software calculation, and graphical or tabular display of results are increasingly favored by automotive speed sensor manufacturers. A comprehensive testing 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, 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, a simple and intuitive testing process, 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 are sensors that utilize the Hall effect to achieve magnetoelectric conversion. The Hall effect was discovered in 1879 and has a development history of over 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 increasing 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 standard type, high sensitivity type, low temperature coefficient type, temperature/magnetic measurement type, and switch type. Due to the characteristics of Hall sensors, such as high sensitivity, good linearity, high stability, small size, and high temperature resistance, they are widely used in various industrial fields, including non-electrical quantity measurement and automatic control, computer devices, and modern military technology.

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