Metering and calibration method and system for electrocardio-equipment

A metrology verification and electrical technology, which is applied in diagnostic records/measurement, medical science, sensors, etc., can solve the problems of poor flexibility of metrology verification devices, inconvenient expansion of procedures, and difficulty in updating and maintenance, so as to facilitate daily verification work and improve The effect of universality and convenient maintenance

Inactive Publication Date: 2011-02-23
NAT INST OF METROLOGY CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the main purpose of the present invention is to provide a method and system for measuring and verifying ECG equipment, which is used to solve the problems o...

Method used

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  • Metering and calibration method and system for electrocardio-equipment
  • Metering and calibration method and system for electrocardio-equipment
  • Metering and calibration method and system for electrocardio-equipment

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specific Embodiment 1

[0106] Using the advanced verification module, according to the "JJG 1041-2008 digital electrocardiography machine verification regulations", the digital electrocardiography machine is verified for the item "waveform recognition ability and amplitude-time parameter measurement".

[0107] The verification project requires the generation of Figure 4 The shown ECG waveform is a standard ECG waveform recommended by the International Organization for Legal Dosimetry (OIML) with a frequency of 0.75 Hz and an amplitude of 2 mV. Assume that the sampling rate of the waveform generating device 120 is 1kHz, that is to say, a signal with a period of 1s should have 1000 data points, and a signal with a period of 0.75Hz should have 1333 data points. The verification personnel first generate the waveform generation program according to the sampling rate of the waveform generation device such as Figure 4 As shown in the waveform data file, a waveform data file with 1333 points in the cardi...

specific Embodiment 2

[0108] Continuous verification is the forward execution of each verification item according to the verification plan, which simplifies the operation of the verification system and reduces the workload in the whole process. Using the continuous verification module, the "subsequent verification" of the digital electrocardiograph was carried out according to the "JJG 1041-2008 Digital Electrocardiograph Verification Regulations".

[0109] For example, the subsequent verification includes 7 items such as internal calibration voltage and input voltage range, such as Figure 5 shown. When performing "subsequent verification", enter the continuous verification main program, and the main program calls the corresponding verification item subroutines one by one according to the items provided by the "subsequent verification item table" (verification plan) until the end. The figure below shows the execution of the internal calibration voltage subroutine called by the continuous verifica...

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Abstract

The invention discloses a metering and calibration method and a metering and calibration system for electrocardio-equipment, which are used for solving the technical problems that the conventional metering and calibration device for the electrocardio-equipment has poor flexibility and is complex to operate and difficult to update and maintain, regulations are inconvenient to extend, and the like. In the method, a calibration instruction and waveform data are sent by a calibration control program run on a general computer, a waveform generating device serving as a general hardware platform generates a standard signal according to the calibration instruction and the waveform data which are sent by the calibration control program and outputs the standard signal to the calibrated electrocardio-equipment, and a calibration control device manages and maintains calibration regulations, calibration items and calibration plans and provides three calibration modes, namely a continuous mode, a single mode and an advanced mode, so the calibration regulations are convenient to extend, an operating interface is more humanized, the daily calibration operation is convenient, and the special demands of users can be met fully.

Description

technical field [0001] The invention relates to the field of metrological verification of medical electrophysiological parameter measuring instruments, in particular to a method and system for metrological verification of electrocardiographic equipment based on a general hardware platform according to verification regulations. Background technique [0002] The measurement and verification device of ECG equipment (such as electrocardiograph, monitor, etc.) is essentially a series of sine waves, square waves, triangle waves, simulated ECG signals, pulse signals and other signals of different frequencies and amplitudes generated according to the measurement and verification regulations. , a low-frequency signal generating device called for heart and EEG equipment to perform metrological verification. [0003] Among the existing measurement and verification devices for ECG equipment, foreign products are represented by Fluke’s PS420 patient simulator, which is a hand-held multi-...

Claims

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Application Information

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IPC IPC(8): A61B5/0402
Inventor 刘科卞昕何昭方宏
Owner NAT INST OF METROLOGY CHINA
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