Duty ratio measuring device
By designing a duty cycle measuring device including multiple monitoring units and comparison units, dynamically monitor the period and pulse width of the digital signal, and select the duty cycle acquisition method according to the period value, the problem of difficulty in real-time monitoring of the duty cycle parameters of the digital signal in the prior art is solved, and high-precision and reliable duty cycle measurement are achieved.
CN222580179UActive Publication Date: 2025-03-07SHENZHEN CITY SIGLENT TECH
Patent Information
- Application Number
- CN202420649590.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-01
Smart Images
Figure CN222580179U_ABST
Abstract
A duty ratio measuring device comprises an input switching unit, a period monitoring unit, a level monitoring unit, a period comparison unit, an output switching unit and a parameter output unit. The period monitoring unit is used for monitoring the period and the pulse width of a to-be-detected signal, and the period comparison unit is used for comparing a first period value output by the period monitoring unit with a first preset value and sending the period and the pulse width of the to-be-detected signal to the parameter output unit according to a comparison result; or the high-level voltage and the low-level voltage of the signal to be detected are monitored through the level monitoring unit, and the reference voltage value, the high-level voltage value and the low-level voltage value are sent to the parameter output unit; and the parameter output unit is used for acquiring the duty ratio of the to-be-measured signal according to the period and pulse width of the to-be-measured signal or according to the reference voltage value, the high-level voltage value and the low-level voltage value. Due to the fact that the duty ratio obtaining mode is adaptively selected according to the period value of the to-be-measured signal, the duty ratio obtaining precision is higher, and the duty ratio obtaining is more reliable.
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Citation Information
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