German Heinrichs sensors, Heinrichs models, Heinrichs prices

Heinrichs 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 signals can be directly input into computer systems. These sensors are developing rapidly and their application is becoming increasingly widespread.

Heinrichs sensor classification

1) Laser speed measurement: With the rise of precision manufacturing and the need for cost savings, non-contact speed sensors are gradually replacing contact speed sensors. Currently, the most accurate and commonly used 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, the distance moved by the measured object is determined, and combined with internal algorithms, the sensor outputs the speed of the measured object 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 terminal blocks, and (5) are mounting screw holes. The (1) LED light emission port emits laser light toward the measured object, which reflects to the (2) camera reception port. After 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 can detect not only whether the measured object has stopped but also its direction of motion. Mount the sensor on a stable bracket to ensure that the rotating object does not produce excessive vibration during rotation, thereby allowing measurement of the rotation angle and rotational speed of the measured object. 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 industrial automation, such as athlete speed measurement, traffic vehicle speed measurement, and golf ball speed measurement. Radar speed sensors can meet these requirements.

Heinrichs sensor principle

A transmissive speed sensor consists of a slotted or notched disk, a light source, and a phototube. When the disk rotates with the measured shaft, light can only reach the phototube through the holes or notches. When the phototube is illuminated, its reverse resistance is very low, 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. Thus, the rotational speed of the measured shaft can be determined based on the number of holes or notches on the disk. The usual number of disk holes or notches is unclear in the source, so the photoelectric converter outputs 60 pulse signals per revolution of the measured shaft. 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 a reflective speed sensor is similar to that of the transmissive type, converting changes in sensed light into electrical signal changes via a phototube, but it obtains pulse signals through light reflection. Typically, reflective material is adhered to the measurement area of the measured shaft to form a reflective surface. Common reflective materials include special speed-measuring reflective tape (adhesive tape); aluminum foil or other reflective materials can also be used, and sometimes white paint is applied to the measured area as a reflective surface. The projector and reflective surface must be properly configured, typically with a distance of 5-15M between them. When the measured shaft rotates, the photoelectric element receives pulsed light and outputs corresponding electrical signals to the electronic counter, thereby measuring the rotational speed of the shaft. 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, vibration in transmissive types can reduce the lifespan of the light source, making them unsuitable for conditions with strong vibration. Reflective types have no mechanical connection with the measured shaft and are convenient to use.

Heinrichs 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 signal from the vehicle speed sensor will greatly affect these control units. Vehicle speed sensors often adopt a Hall effect structure. A Hall speed sensor is a magnetoelectric sensor 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. 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 rotates under external drive, it drives the permanent magnet to rotate, causing periodic changes in the magnetic field passing through the Hall element. This causes changes in the output voltage of the Hall element, which is processed by subsequent circuits to form stable pulse voltage signals as the output of the vehicle speed sensor. Key electrical technical parameters of Hall structure speed sensors include: output signal high voltage, low voltage, duty cycle, period, rise time, fall time, and pulses per cycle. To ensure product performance reliability, these parameters must be quantitatively tested before factory release. Test systems featuring integration and intelligence, efficient automatic measurement, software calculation, and graphical or tabular display of results are increasingly favored by vehicle speed sensor manufacturers. A comprehensive testing device has been developed for performance measurement of common 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 accuracy, 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 significant 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 over 100 years. However, its application gained attention and widespread use 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 and 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, automatic control, computer devices, and modern military technology.

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