German HERREKOR encoder HERREKOR model HERREKOR price

HERREKOR encoders provide an absolutely unique position for each point, are interference-resistant, and do not require power-loss memory. They are increasingly widely used in angle and length measurement and positioning control in various industrial systems. Absolute rotary optical encoders, due to their absolutely unique position for each point, interference resistance, and lack of need for power-loss memory, are increasingly widely used in angle and length measurement and positioning control in various industrial systems. The optical code disk of an absolute encoder has many tracks of lines, with each track arranged sequentially as 2 line, 4 line, 8 line, 16 line, and so on. In this way, at each position of the encoder, by reading the light and dark states of each track, a unique 2-ary code (Gray code) is obtained, ranging from the zeroth power of 2 to the n-1th power of 2. This is called a n-bit absolute encoder. Such an encoder is determined by the mechanical position of the code disk and is unaffected by power outages or interference. The uniqueness of each position determined by the mechanical position of the absolute encoder means it requires no memory, no reference point search, and no continuous counting; the position is read whenever needed. This significantly improves the encoder's interference resistance and data reliability. Since absolute encoders are clearly superior to incremental encoders in positioning, they are increasingly used in industrial control positioning. Due to their high precision and large number of output bits, if parallel output were still used for absolute encoders, each bit output signal would need to ensure excellent connection, and isolation would be required for more complex conditions. The large number of cable cores brings much inconvenience and reduces reliability. Therefore, for multi-bit output types, absolute encoders generally use serial or bus-type output. The most common serial output for German-made absolute encoders is SSI (Synchronous Serial Interface). A single-turn absolute rotary encoder measures the tracks on the optical code disk during rotation to obtain a unique code. When rotation exceeds 360 degrees, the code returns to the origin, which violates the principle of absolute encoding uniqueness. Such encoders can only be used for measurements within a rotation range of 360 degrees and are called single-turn absolute encoders. To measure rotation beyond a 360-degree range, a multi-turn absolute encoder is required. Manufacturers of absolute encoders use the principle of clock gear mechanics. When the central code disk rotates, another set of code disks (or multiple sets of gears and code disks) is driven via gear transmission. Count encoding is added to the single-turn encoding to expand the measurement range of the encoder. Such absolute encoders are called multi-turn absolute encoders. They also determine encoding by mechanical position, ensuring each position code is unique and non-repeating without the need for memory. Another advantage of multi-turn encoders is that the large measurement range often provides considerable margin in actual use. Thus, there is no need to struggle to find the zero point during installation; an intermediate position can be used as the starting point, greatly simplifying installation and commissioning. Multi-turn absolute encoders have obvious advantages in length positioning and are increasingly used in industrial control positioning.

HERREKOR encoder principle

Magnetic encoders adopt a magneto-electric design, generating or providing the position and speed of the actuator (servo motor) through changes in the magnetic field of magnetic induction devices. The physical working principle of magnetic encoders is the magnetoresistive effect. The magnetoresistive effect arises from charge carriers inside a current-carrying conductor or semiconductor. Under the action of the external Lorentz force, the trajectory of the internal charge carriers deflects or undergoes spiral motion, causing a change in the potential difference inside the conductor or semiconductor. This process is a microscopic manifestation; macroscopically, as long as the external magnetic field changes, the magnetoresistance value changes accordingly. This is the magnetoresistive effect of magnetic encoders. The magnetoresistive devices in magnetic encoders include semiconductor magnetoresistive devices and ferromagnetic magnetoresistive devices. Thus, the detection probe of a magnetic encoder uses a magnetoresistive device as the magnetic head. Currently, the commonly used magnetoresistive heads for magnetic encoder probes are Giant Magnetoresistance (GMR) heads (GMR) and Anisotropic Magnetoresistance (AMR) heads (AMR). However, due to advantages such as better frequency characteristics and higher sensitivity compared to GNR heads, AMR heads are gradually becoming the mainstream application for magnetic encoders.

HERREKOR encoder advantages and disadvantages

(1) Advantages: High precision, high resolution, and high reliability. They can directly output digital codes in a specific format, connect conveniently with microcomputers and digital systems, and are very flexible and easy to use. They are mainly used for measuring various displacements. (2) Disadvantages: (1) The resolution of contact encoders is limited by brushes and cannot be made very high; (2) Contact generates friction, resulting in a shorter service life; (3) Contact points do not allow high-speed operation. Therefore, this type of encoder is rarely used.

HERREKOR encoder technical specifications

HD encoders, also known as digital encoders, video encoders, HD video encoders, digital TV encoders, network video encoders, or digital video encoders, primarily function to perform digital encoding processing on input digital audio-video signal sources (including HDMI signal sources, SD-SDI signal sources, and HD-SDI signal sources). Common encoding methods include MPEG-2, MPEG-4, H.264, and H.265. The signals are encoded into TS stream data suitable for real-time transmission. The data stream is then encapsulated in ASI format or IP format for output to downstream equipment, such as IPQAM modulators, digital TV modulators, digital modulators, and DTMB modulators. The ASI format typically uses BNC interface output, while the IP format uses a 1000M Ethernet interface with RJ45. The IP data stream generally supports protocols such as TS/HLS/RTSP/FLV/RTMP/UDP/RTP/unicast/multicast.

Weidou Intelligent Technology specializes in selling German HERREKOR rotary encoders, HERREKOR incremental encoders, HERREKOR absolute encoders, HERREKOR optical encoders, HERREKOR magnetic encoders, HERREKOR shafted encoders, HERREKOR hollow shaft encoders, HERREKOR contact brush encoders, HERREKOR angle encoders, HERREKOR linear encoders, HERREKOR digital encoders, HERREKOR draw-wire encoders, HERREKOR position encoders, HERREKOR hollow bore encoders, and HERREKOR spindle encoders. HERREKOR products are original imports from Germany. Customers are welcome to inquire and place orders.