Timing pulses for rotary coded switches？

来源:Dongguan Yanghan Industrial Co., Ltd.  时间:2023-06-19

A rotary code switch is an electronic component whose main function is to convert the rotary code into a digital signal output. The timing pulse is one of the important parameters to control the output signal of a rotary code switch. Correct timing pulses ensure the proper operation of the rotary code switch and the accurate and stable output signal.

    The timing pulse refers to the timing relationship of the output signal during the rotation of the rotary code switch. This timing relationship is actually made up of two signals, the clock signal and the direction signal. The clock signal is a periodic pulse sent from inside the rotary encoder to synchronize the internal operation of the encoder. The direction signal, on the other hand, is used to indicate the direction of rotation of the rotary code switch and is usually expressed in two states, CW (clockwise) and CCW (counterclockwise).

    When using a rotary encoder switch, it is necessary to provide it with a correct timing pulse. The specific timing pulse design depends on the specific model and usage requirements of the rotary code switch. In general, the design of the timing pulse includes the following aspects:

    1. The period and pulse width of the clock signal. The period of the clock signal should match the resolution of the rotary encoder to ensure the accuracy and stability of the output signal. The pulse width of the clock signal needs to be adjusted according to the application requirements, which is generally a square wave with 50% duty cycle.

    2. Polarity and pulse width of the direction signal. The direction signal needs to distinguish between clockwise and counterclockwise rotation directions, so it needs to set the correct polarity. The pulse width of the direction signal should be as short as possible to ensure that there is no interference with the clock signal.

    3. The phase relationship of the signal. The phase relationship between the clock signal and the direction signal should be correctly matched to ensure the accuracy and stability of the output signal.

    When designing the timing pulse, it needs to be selected according to the specific application requirements and the model of the rotary code switch. Also, precise testing and adjustment is required to ensure that the rotary code switch can output signals accurately and stably.

    In conclusion, timing pulses are critical to the proper operation of the rotary code switch. Correct timing pulses can ensure accurate and stable output signals from the rotary code switch, thus enabling control and regulation of electronic devices.