Nine kinds of commonly used absolute encoder introduction

Absolute value encoder is a commonly used components, absolute value encoder volume is much larger than the variable resistor, absolute value encoder appearance has a large and small, the shape of the various types of absolute value encoder specific features are different. The specific features of various absolute encoders are different. Today, we would like to briefly introduce the appearance and features of several common absolute encoders.

1. Rotary single absolute encoder: This is a round start absolute encoder, which has a metal rotating handle, the length of this handle varies in different absolute encoders, some are quite long, some are quite short. The handle can be rotated within a certain angle on the left and right. However, it cannot rotate 360 degrees. This absolute value encoder is usually 3 with the pin, there are 4 reported pin, the fourth with the pin is connected to the shell of the pin (ground pin), in the circuit used to ground wire (alias: lightning rod), in order to eliminate the adjustment of the absolute value encoder when the human body to bring the dry close.

2. Straight slide single absolute encoder: This is an absolute encoder with a rectangular structure. It has a vertical upward maneuvering handle, this handle can only be slid in a straight line and can not be rotated, its pin piece in the lower part.

3. Rotary Duplex Absolute Encoder: It is similar to the rotary single absolute encoder, but it has two single absolute encoders, each with the same characteristics. With a handle to control the organization of the two single absolute encoders to adjust, each single absolute encoder has three pins.

4. Straight-sliding double absolute encoder: it is similar to straight-sliding single absolute encoder, which consists of two single absolute encoders, with a rotary handle to control the organization of the two single absolute encoders to adjust, each single absolute encoder has three pins.

5. Straight slide type chip type absolute encoder: straight slide type chip type absolute encoder has no pin, he is very much smaller compared with the ordinary absolute encoder, mainly used in some very small size of the electrical appliances. Absolute encoder manufacturer by the mechanical position to determine the code, it does not need to memorize, no need to find the reference point, and do not have to count all the time, when you need to know the position, when to read its position. In this way, the anti-interference characteristics of the encoder, the reliability of the data is greatly improved.

6. Rotary Patch Absolute Encoders: Rotary Patch Absolute Encoders, like normal rotary absolute encoders, change the resistance value by rotary adjustment.

7. Winding multi-turn absolute encoder: the structure of this absolute encoder and ordinary absolute encoder is different, it can withstand the power (refers to the number of objects in the unit time of the work done) is relatively large, and adjust the resistance value can be greater than 360 read rotation. Rope displacement sensor in accordance with the readout encoder can be divided into contact and non-contact two kinds. Contact with the brush output, a brush contact conductive area or insulated area to indicate the state of the code is "1" or "0"; non-contact acceptance of the sensitive element is a light-sensitive element or magnetic element, the use of light-sensitive elements to light-transparent and light-impermeable areas to indicate that the state of the code is "1" or "0"; non-contact acceptance of sensitive elements are photosensitive elements or magnetic elements, using light-sensitive elements to transmittance and opacity of light to indicate The state of the code is "1" or "0".

8. Precision absolute encoders: Precision absolute encoders have a high degree of adjustment accuracy (precision) and are commonly used in some precision circuits.

9. With switch small absolute value encoder: commonly used in the introduction of that controller, it is attached to a power switch, in the absolute value encoder just started to rotate, first turn on the absolute value encoder in the switch contacts, and then rotate before the absolute value encoder adjustment. Waterproof encoder is a device that converts signals or data compilation into a form that can be used for communication, transmission, and storage, and converts angular displacement or linear displacement into an electrical signal, the former of which is called a code disk, and the latter of which is called a code scale. The signal output of the encoder includes various forms such as sine wave, square wave, open collector, push-pull and so on. There are also a very wide variety of such absolute encoders with switches, such as the volume absolute encoders in radios and the switches in some of the larger rotary absolute encoders. Absolute encoders with switches have two more pins than normal absolute encoders, which are contact pins for the power switch.