Method for converting absolute encoder signal into incremental encoder signal

An absolute encoder and incremental encoder technology, applied in the direction of instruments, simulators, computer control, etc., can solve the problems of reducing system reliability, increasing the number of overall wiring, increasing installation and renovation costs, and reducing complexity, The effect of wide application space, improved flexibility and efficiency of installation and commissioning

Active Publication Date: 2017-05-31
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

If an incremental encoder is installed for the second time in a system already equipped with an absolute encoder, or if the mechanical transmission device on the simulated site is rebuilt to obtain an incremental encoding signal, not only a suitable installation location and space are required, but also an increase in The overall wiring quantity will reduce the reliability of the system and increase the cost of installation and modification

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  • Method for converting absolute encoder signal into incremental encoder signal
  • Method for converting absolute encoder signal into incremental encoder signal
  • Method for converting absolute encoder signal into incremental encoder signal

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Embodiment Construction

[0018] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0019] like figure 1 As shown, C0, C1, C2...Cn-1 are respectively the lowest bit, the "1" bit, the "2" bit... to the highest bit corresponding to the complete output of the Gray code data of the absolute encoder. When the absolute encoder rotates once, the total number of high and low level changes of each low bit is twice the total number of high and low level changes of its adjacent high bits, and the upper part of the square wave is 0-(2 n -1) The number is the decimal number corresponding to each group of n-bit Gray codes. A set of data is output every t time, and the step size of the n-bit absolute encoder is 2 n , it rotates once and outputs 2 n group data, its angular resolution is 360 / 2 n , each time the highest bit Cn-1 has a pulse falling edge, it indicates that the absolute encoder completes one revolution, o...

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Abstract

The invention discloses a method for converting an absolute encoder signal into an incremental encoder signal and relates to the field of encoder signal conversion. Disadvantages that complexity of system signal processing is increased and flexibility and installation debugging efficiency of a control system are reduced since an encoder should be installed repeatedly during conversion of an absolute encoder signal into an incremental encoder signal in the prior art are overcome. According to the invention, a lowest order signal line and a highest order signal line of an absolute encoder output Gray code are connected to an IO port of a single chip microcomputer; the single chip microcomputer receives Gray code data in the lowest order and the highest order sent by the absolute encoder, and simulates to output a corresponding signal of the incremental encoder according to the level change condition of the received absolute encoder signal; and after the single chip microcomputer receives the Gray code data of the eight groups of absolute encoders, the corresponding single chip microcomputer finishes to control outputting of a complete encoding pulse signal.

Description

technical field [0001] The invention relates to the field of encoder signal conversion, in particular to a method for converting an absolute encoder signal into an incremental encoder signal. Background technique [0002] Encoder is an important industrial auxiliary device, which is widely used in industrial systems. It is often used for position detection and speed control. According to its scale method and signal output form, it can be divided into two types: incremental type and absolute type. The incremental encoder uses the number of pulses to represent the displacement. Its counting starting point is arbitrary, and it can realize multi-turn infinite accumulation measurement. It has the advantages of simple installation, low price and small subsequent data processing workload. To find the reference position, the absolute position information of the shaft rotation cannot be output. Absolute encoders directly output digital signals, each position of which is unique and d...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/042
Inventor 沈宝诚金怀国
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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