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Real-time waveform smooth drawing method, device and system

A real-time waveform and smoothing technology, which is applied in the fields of instrumentation, computing, and electrical digital data processing, etc., can solve the problems of waveform display being fast and slow, uneven acquisition signal delay, and uneven data transmission by transmission equipment.

Active Publication Date: 2021-04-27
成都心吉康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to realize the smooth drawing of real-time waveform. The purpose is to provide a method, device and system for smooth real-time waveform drawing. Adjustment to avoid the uneven delay of the acquisition signal and the uneven data transmission of the transmission equipment, resulting in the situation that the waveform display is fast and slow, and the smooth drawing of the waveform is realized

Method used

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  • Real-time waveform smooth drawing method, device and system

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Embodiment 1

[0027] like figure 1 As shown, the present invention comprises real-time waveform smooth drawing method, comprises the steps:

[0028] Step S1: When the transmitted real-time data of physiological signals such as ECG, PPG heart rate, and SPO2 blood oxygen saturation are cached in the buffer memory of the application end, the application end first starts the timing mechanism based on the hardware clock millisecond-level high-precision timing, and then calculates The data size of a piece of data that needs to be read is Size=BaseSize+Offset, and finally timed (for example, every 50ms) to read a piece of data with a data volume of Size in the buffer memory, where BaseSize is ideally consumed by drawing a piece of image each time The amount of data; Offset is the dynamic adjustment amount, that is, the ratio of the actual difference between the amount of data to be processed in the current time period (such as 1 second) and the frame rate, and the calculated dynamic adjustment amo...

Embodiment 2

[0040] like figure 2 , which shows a real-time waveform smoothing drawing device of the present invention, including an interconnected processor and memory 103, and also includes:

[0041] Data processing module 101: When the data is transmitted, the data is cached in the buffer memory of the application end. The application end first starts the timing mechanism based on the hardware clock timing, and then calculates the data size Size=BaseSize+Offset of a piece of data to be read, and finally timing Read a piece of data with a size of Size from the buffer memory, where BaseSize is the amount of data consumed by drawing a piece of image each time under ideal conditions; Offset is a dynamic adjustment amount, that is, the actual difference between the amount of data that needs to be processed in the current time period and The ratio of the frame rate, the calculated dynamic adjustment amount Offset is used to be evenly distributed to each segment of the image that needs to be ...

Embodiment 3

[0050] like image 3 , the present invention shows a real-time waveform smooth drawing system, including

[0051] Data acquisition device 201: used to collect real-time data, real-time data can be ECG electrocardiogram data, PPG heart rate data and SPO2 blood oxygen saturation data collected by smart watches and other physiological signal data, and regularly send the collected data to the real-time waveform smooth drawing display device ; The data acquisition equipment includes all wired and wireless transmission methods, such as Ethernet, serial port, wifi, Bluetooth, etc. The data acquisition equipment can be smart wearable devices such as watches.

[0052] The real-time waveform smoothing device 202 shown in Embodiment 2: receives the real-time data sent by the data acquisition device, and caches the real-time data packets in the buffer memory of the application end, first starts the timing mechanism based on the hardware clock timing, and then calculates the time required ...

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Abstract

The invention discloses a real-time waveform smooth drawing method, device and system. The real-time waveform smooth drawing method includes the following steps: when the transmitted real-time data is cached in the buffer memory of the application end, the application end first starts the timing mechanism based on the hardware clock timing, and then calculates the data size Size=BaseSize of a piece of data to be read +Offset, and finally regularly read a piece of data from the buffer memory with a size of Size, where BaseSize is the amount of data consumed by drawing a piece of image each time under ideal conditions; Offset is a dynamic adjustment amount; A piece of data is converted into recognizable coordinate points and transmitted to the graphic interface, and the real-time waveform is smoothly drawn by using the smart terminal. The present invention realizes the smooth drawing of the waveform through the above principle, based on the timer counted by the hardware clock, and dynamically adjusts the amount of data to be fetched.

Description

technical field [0001] The invention relates to the field of waveform drawing, in particular to a real-time waveform smoothing drawing method, device and system. Background technique [0002] Smart wearable devices measure physiological signals such as ECG, PPG heart rate, and SPO2 oxygen saturation of the human body through sensors and detection circuits. After calculation and processing, the obtained physiological parameter values ​​are recorded in waveform and displayed on the display terminal, such as CRT (Cathode Ray Tube) and LCD (Liquid Crystal Display), real-time display. Existing wearable devices mainly use the sleep function, Timer, CountDownTimer, AlarmManager, etc. in the process of waveform drawing to achieve timing and fixed data for waveform drawing. Due to the CPU scheduling mechanism adopted, accurate timing at the millisecond level cannot be guaranteed. It is impossible to guarantee the uniformity of the drawing frequency. When the waveform display is draw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14G16H40/60
CPCG06F3/1407G16H40/60
Inventor 令狐克俨陈小君杨益军
Owner 成都心吉康科技有限公司