Alarm sound generation method of infusion device sound alarm module based on single-chip microcomputer

Abstract

A sound alarm module for infusion set based on single-chip microcomputer, including single-chip microcomputer AT89C52 connected with sequential signals, digital-to-analog conversion module DAC0832, amplifier LM386 and buzzer. The alarm sound generation method based on the above-mentioned sound alarm module includes the following steps: 1. Design the alarm sound signal according to the national standard YY0709-2009; 3. Use the amplifier LM386 to amplify the simulation signal to drive the buzzer to send out an alarm sound. The present invention uses the single-chip microcomputer AT89C52 as the control part of the central control unit, the D / A module selects DAC0832 to convert the digital quantity output by the control system into a corresponding analog quantity, and the peripheral module uses the audio amplifier LM386 to amplify the output of the D / A module to drive the buzzer The alarm sound signal is issued, which conforms to the industry standard under the new auditory alarm signal, realizes the standardization of the alarm sound of the infusion set, and makes the work of the infusion set safer and more reliable.

Description

technical field [0001] The invention relates to single-chip microcomputer measurement and control technology, in particular to a method for generating alarm sound of a sound alarm module of an infusion set based on a single-chip microcomputer. Background technique [0002] Alarm systems in medical devices can promptly alert healthcare personnel to a patient's deterioration, or warn equipment operators that a procedure may be dangerous. The alarm system includes alarm functions such as sound, optical and text reminders, which are used to timely convey the status of the instrument and the change of the patient's condition. The perfection, reliability and effectiveness of the alarm system are of great significance to ensure the safety of medical treatment. Audible alarm signals are useful for spatial orientation and can help operators quickly determine the source of an alarm condition. [0003] The infusion set is an instrument that can accurately control the number of infusi...

AI Technical Summary

Problems solved by technology

At present, the auditory alarm signal of domestic medical products adopts low-cost piezoelectric alarm device, which cannot meet the complex frequency requirements in the standard, and is easily confused with the alarm sound of other medical equipment in the clinical environment. Therefore, the understanding and realization of standardized signals has certain clinical value. and meaning

Images