Rotary encoder simulation device based on single chip microcomputer
A technology of analog devices and encoders, which is applied in the direction of measuring devices, instruments, and parts of electrical measuring instruments, etc., can solve the problems of unable to provide speed signals and no speed encoders, etc., and achieve the effect of simple structure and easy realization
Inactive Publication Date: 2011-11-23
浙江日风电气股份有限公司
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Problems solved by technology
[0004] Many devices need to provide photoelectric encoder signals during operation, such as wind power converters, vector frequency converters, etc. When testing these devices, it is often necessary to provide the speed signal of the generator or motor to the device under test, but in fact In most tests there is no actual speed encoder, so no speed signal can be provided
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[0019] Such as figure 1 The rotary encoder simulation device shown includes a single-chip microcomputer 1 (AVR series single-chip microcomputer, ATMEGA88), a quartz oscillator 2, a control button group 3, a display screen 4, and a power supply module 5. The power module is composed of a power supply, a voltage stabilizing device and a voltage stabilizing circuit. The power supply provides a voltage of 24V, and the voltage stabilizing device converts the 24V voltage into a voltage of 5V. The voltage stabilizing circuit is composed of two electrolytic capacitors to ensure a stable voltage output. The crystal oscillator 2 is composed of a crystal oscillator and two drive capacitors to generate a clock frequency signal and input it into the microcontroller 1 .
[0020] Single-chip microcomputer 1 is driven by the clock frequency signal to generate three pulse signals, which are pulse signals A, B, and Z respectively. The phase difference between pulse signal A and pulse signal B i...
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The invention discloses a rotary encoder simulation device based on a single chip microcomputer. The rotary encoder simulation device comprises a power module, a quartz oscillator providing clock frequency signals, a single chip microcomputer for outputting a pulse signal A, a pulse signal B and a pulse signal Z, a display module and a control key group. The phase difference between the pulse signal and the pulse signal B is 90 degrees to supply the rotation direction signals for an engine or a motor, and the pulse signal Z is output periodically to supply the rotation speed signals for the engine or motor. The simulation device disclosed by the invention carries out programming on the single chip microcomputer to form three paths of pulse signals, and is connected with a photoelectric isolator to output the signals so as to supply rotation signals for the engine of a wind power converter, a vector converter and the like. The simulation device has a simple structure and is easy to realize.
Description
technical field [0001] The invention relates to the technical field of single-chip microcomputer development, in particular to a single-chip microcomputer-based rotary encoder simulation device. Background technique [0002] Single-chip microcomputers are widely used in military, industrial, household appliances, smart toys, portable smart meters, and robot production, which greatly improves product functions, precision, and quality. Due to its features such as easy to learn, low cost, high speed, low power consumption, confidentiality and powerful functions, the market share of single chip microcomputer is gradually increasing. [0003] Photoelectric encoder is a sensor that converts the mechanical geometric displacement on the output shaft into pulse or digital quantity through photoelectric conversion. Its working principle is: there are regularly engraved translucent and opaque lines on the disc, On both sides of the disk, light-emitting elements and photosensitive elem...
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Inventor 章旌红陈晓东任青潘理富江日臻熊亭亭吴限蒋侃
Owner 浙江日风电气股份有限公司