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Pulse signal detection method based on table look-up method

A pulse signal and detection method technology, applied in the field of signal processing, can solve problems such as many detailed steps, large amount of calculation, inconvenient modification and maintenance, etc., to achieve the effect of reducing complexity and calculation amount, and filtering out interference

Active Publication Date: 2021-07-27
ZHEJIANG WEIXING INTELLIGENT METER STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the above method is used to run, there are many detailed steps, the logic is relatively complicated, the amount of calculation is large, and it is inconvenient to modify and maintain later

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  • Pulse signal detection method based on table look-up method
  • Pulse signal detection method based on table look-up method
  • Pulse signal detection method based on table look-up method

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Embodiment Construction

[0023] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only to further illustrate the features and advantages of the present invention, rather than limiting the claims of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] Such as figure 1 As shown, it is a schematic flow chart of the embodiment of the present invention. The system used in this embodiment includes a smart gas meter and a 119 alarm. Among them, there are two types of signals output by the 119 alarm: usually output low level, and detect When a gas leakage alarm occurs, a pulse signal is output. The output pulse signal has a period of 5 seconds and a duty cycle of 5...

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Abstract

The invention discloses a pulse signal detection method based on a table look-up method. The pulse signal detection method comprises the steps: S1, making a coding table based on pulse signals to be collected; S2, acquiring a pulse code value in a window with a preset width; S3, if the obtained pulse code value is found in the code table, presenting that the corresponding pulse signal is valid. The preset coding table is compared with the coding value of the detected real-time pulse signal, the complexity and the operand of effectiveness judgment of the pulse signal are reduced, the coding value caused by interference can be effectively filtered out, only shifting operation is used in the process of obtaining the coding value of the pulse signal, complex logic operation is not needed, and the window width for collecting the pulse coding value can be adjusted according to the pulse period and the required detection precision.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a pulse signal detection method based on a look-up table method. Background technique [0002] The detection of the pulse signal usually needs to capture the start and end of the pulse, and also needs to calculate the period and duty cycle of the pulse to determine the waveform and filter out the interference. When the above method is used to run, there are many detailed steps, the logic is relatively complicated, the amount of calculation is large, and it is inconvenient to modify and maintain later. Contents of the invention [0003] In order to overcome the deficiencies of the above technologies, the present invention provides a pulse signal detection method based on the look-up table method, which compares the pulse signal codes through a preset code table, reducing the complexity and calculation amount of the pulse signal validity judgment . [0004] The invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/02
CPCG01R29/02G01R29/023
Inventor 陈琛
Owner ZHEJIANG WEIXING INTELLIGENT METER STOCK
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