CN104143250B - The alarm sound production method of SCM Based transfusion device audible alarm module - Google Patents
The alarm sound production method of SCM Based transfusion device audible alarm module Download PDFInfo
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- CN104143250B CN104143250B CN201310172867.0A CN201310172867A CN104143250B CN 104143250 B CN104143250 B CN 104143250B CN 201310172867 A CN201310172867 A CN 201310172867A CN 104143250 B CN104143250 B CN 104143250B
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Abstract
A kind of SCM Based transfusion device audible alarm module, including single-chip computer AT89C52, D/A converter module DAC0832, amplifier LM386 and buzzer that sequential signal is connected.Alarm sound production method based on tut alarm module comprises the following steps: one, design alarm sound signal according to national standard YY0709-2009；Two, single-chip computer AT89C52 and D/A converter module DAC0832 analog simulation signal are utilized.Three, using amplifier LM386 to amplify emulation signal drives buzzer to send alarm sound.The present invention uses single-chip computer AT89C52 as the control part of central control unit, D/A module selects DAC0832 that the digital quantity that control system exports is converted to respective mode analog quantity, peripheral module uses audio frequency amplifier LM386 to amplify the output of D/A module to drive buzzer to send alarm sound signal, meet the industry standard under new audible alert signal, achieve the standardization of transfusion device alarm sound, make transfusion device work safer reliably.
Description
Technical field
The present invention relates to single-chip microcomputer observation and control technology, particularly relate to the alarm sound production method of a kind of SCM Based transfusion device audible alarm module.
Background technology
Warning system in medical apparatus and instruments can remind medical care and health personnel, conditions of patients to occur in that deterioration or apartment warning operator in time, and operation is likely to dangerous.Warning system includes the warning functions such as sound, optics and word prompting, for passing on the change of illness state of apparatus status and patient in time.Warning system perfect, reliable and effectively significant for ensureing medical safety.Space orientation is useful by audible alert signal, it is possible to help operator promptly to determine the source of alarm condition.
Transfusion device is that one can accurately control number of infusion drops or infusion flow rate, it is ensured that medicine can speed uniform, a kind of instrument of playing a role in dose accurately and safely entrance patient body.Each malfunction in can being used by transfusion device according to Risk Analysis Methods for Medical Devices is divided into high, medium and low grade, report to the police including bubble, drip number warning, pressure alarm, obstruction warning, aneroid warning, battery low-voltage warning, processor warning etc., main vision and the audio alarm mode of adopting, the timely process of prompting medical personnel.The audible alert signal of current domestic medical product adopts the piezo alarm device of low cost, complex frequency requirement in standard cannot be met, the alarm sound of other medical equipments is obscured easily and in clinical setting, therefore the understanding of normalized signal and realization have certain clinical value and meaning.The audible alert signal of external medical product has adopted microcontroller circuit to produce the signal of telecommunication of combination of frequency, and converts the audible alert signal meeting standard clause to.
Summary of the invention
The purpose of the present invention, it is simply that in order to solve the problems referred to above, it is provided that the alarm sound production method of a kind of SCM Based transfusion device audible alarm module.
To achieve these goals, present invention employs techniques below scheme: a kind of SCM Based transfusion device audible alarm module, including single-chip computer AT89C52, D/A converter module DAC0832, amplifier LM386 and buzzer；The output of single-chip computer AT89C52 connects the input of D/A converter module DAC0832, and the output of D/A converter module DAC0832 connects the input of amplifier LM386, and the output of amplifier LM386 connects buzzer.
Based on the alarm sound production method of tut alarm module, comprise the following steps:
One, alarm sound signal is designed according to national standard YY0709-2009；
Two, single-chip computer AT89C52 and D/A converter module DAC0832 analog simulation signal are utilized；
Three, using amplifier LM386 to amplify emulation signal drives buzzer to send alarm sound.
The specific practice of step one is, different audible alert signal according to national standard YY0709-2009 high priority, medium priority and the low priority formulated, make musical note combination and the impulse train design of the transfusion device alarm sound signal of high priority, medium priority and low priority.
The specific practice of step 2 is, uses single-chip computer AT89C52 as central control unit, by D/A converter module DAC0832, the digital quantity that central control unit exports is converted to respective mode analog quantity, it is achieved corresponding alert audio signal produces；The Timer/Counter utilizing single-chip microcomputer produces the different frequency square-wave signal that each warning scale is corresponding；According to the audible alert signal pulse parameter values set, it is simulated with DAC0832, the accumulation square wave number of 3 the square-wave pulse enumerators rising edges of corresponding trapezoidal sound wave pulse, maximum and trailing edge respectively is set, and calculates accumulation square wave number contained by three stages of each sound in each priority.
The specific practice of step 3 is, uses amplifier LM386 to amplify and changes the low level audio current signal of D/A converter module DAC0832 output, making output be enough to drive the buzzer connected to send alarm sound.
The invention provides a SCM Based transfusion device audible alarm module and the alarm sound production method based on this module, meet the industry requirement under audible alert signal complicated in pharmaceuticals industry national standard YY0709 2009.The audible alarm scheme that the present invention proposes, it is achieved that 3 classification standards of transfusion device alarm sound, the transfusion device work making reality is more easy, safety and reliably.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the SCM Based transfusion device audible alarm module of the present invention；
Fig. 2 is the temporal characteristics diagram of audible alert signal；
Fig. 3 is audible alert signal main program flow chart；
Fig. 4 is audible alert signal sounding subroutine flow chart.
Detailed description of the invention
Referring to Fig. 1, the SCM Based transfusion device audible alarm module of the present invention, including single-chip microcomputer 1, D/A converter module 2, amplifier 3 and buzzer 4.Single-chip microcomputer adopts AT89C52, D/A converter module to adopt DAC0832, amplifier to adopt LM386；The output of single-chip computer AT89C52 connects the input of D/A converter module DAC0832, and the output of D/A converter module DAC0832 connects the input of amplifier LM386, and the output of amplifier LM386 connects buzzer.
The present invention, based on the alarm sound production method of tut alarm module, comprises the following steps:
One, alarm sound signal is designed according to national standard YY0709-2009；
Two, single-chip computer AT89C52 and D/A converter module DAC0832 analog simulation signal are utilized；
Three, using amplifier LM386 to amplify emulation signal drives buzzer to send alarm sound.
In step, different audible alert signal according to national standard YY0709-2009 high priority, medium priority and the low priority formulated, make musical note combination and the impulse train design of the transfusion device alarm sound signal of high priority, medium priority and low priority.According to national standard YY0709-2009, it is desirable to have at least a set of different audible alert signal with high priority, medium priority, low priority, it is ensured that user can select a set of auditory alarm system that know, standard in all of warning system.The audible alert signal of high priority is designed to all different from other sound of great majority (such as facsimile machine sound, phone sound etc.), alarm signal wants priority encoding, so that operator only just can obtain alarm signal by audition in the sound in patient care district, and tells the priority of associated alarm states.Indicate the difference of priority mainly through the quantity of pulse in impulse train and the rhythm and pace of moving things, the feature of audible alert signal pulse is as shown in table 1.
The feature of table 1 audible alert signal pulse
High priority impulse train is made up of 10 pulses, and 5 pulses are one group, often has a time-out between group.First group pulse causes the attention of operator, and the second group pulse is then it is however emphasized that the importance of alarm condition, and helps operator to determine the source of alarm condition.The impulse train of medium priority is made up of 3 pulses, and the impulse train of low priority is made up of 1 to 2 pulses.Compared with low priority alarm signal, high priority alarm signal should use impulse train faster, and pulse is shorter, and repetition rate is higher.Medium priority and low priority audible alert signal should at least complete an impulse train, and high priority audible alert signal should at least complete half impulse train.Impulse train meets the change shown in Fig. 2 in time domain.The different impulse train patterns of basic, normal, high priority alert signal, impulse train speed, pulse width, repetitive rate and relative volume etc., produce the different urgency levels needing operator to respond.Audible alert signal should attempt using tone patterns (musical note) standardization, can represent with one group of following note: C corresponds to middle pitch DO, d corresponds to bass re, the same g bass sol corresponding to octave lower than middle pitch SOL of octave lower than middle pitch RE.Sound can produce the gradual rolloff of fluid and the effect of " splashing " overflow, the pre-tone of audible alert signal and a kind of note thereof and represent as shown in table 2.
The pre-tone of table 2 audible alert signal and a kind of note thereof represent
Around 3 different grades of alarm signals, indicated the difference (referring to table 1) of priority by the quantity of pulse in impulse train and the rhythm and pace of moving things.By arranging the different impulse train patterns of basic, normal, high priority alert signal, impulse train speed, pulse width, repetitive rate and relative volume etc., produce the different urgency levels needing operator to respond.
In step 2, use single-chip computer AT89C52 as central control unit, by D/A converter module DAC0832, the digital quantity that central control unit exports is converted to respective mode analog quantity, it is achieved corresponding alert audio signal produces；The Timer/Counter utilizing single-chip microcomputer produces the different frequency square-wave signal that each warning scale is corresponding；According to the audible alert signal pulse parameter values set, it is simulated with DAC0832, the accumulation square wave number of 3 the square-wave pulse enumerators rising edges of corresponding trapezoidal sound wave pulse, maximum and trailing edge respectively is set, and calculates accumulation square wave number contained by three stages of each sound in each priority.More specifically, it is AT89C52 and DAC0832 will be adopted to generate required audio pulse, it is achieved trapezoidal audio alarm acoustic impluse signal.Produce a certain specific tonepulse (1/ frequency) by this pulse period divided by 2, it is the time of half period, utilize the time of intervalometer this half period of timing, whenever timing to rear just by anti-phase for the I/O of output pulse, then reclock time of this half period is anti-phase to I/O again, it is possible to obtain the pulse of this frequency on I/O pin.The timer internal utilizing single-chip microcomputer makes it be operated under 16 digit counter pattern MODE1, changes count value TH0 and TL0 to produce the pulse signal of different frequency.The computing formula of the timer count initial value of the note of a certain characteristic frequency is as follows:
Can be regarded as out the counting initial value of some warning note pulses of the transfusion device of national regulations according to formula (1), row are in table 3.
Table 3 alarm signal timer count initial value
DAC0832 is 8 D/A converters of monolithic direct-current-output type adopting CMOS technology to make, the audible alert signal pulse parameter values that simulation is set, 3 square-wave pulse enumerator count1 need to be set, the accumulation square wave number of count2, the count3 corresponding rising edge of sound wave pulse, maximum, trailing edge respectively.The sound wave pulse of different frequency, is different at identical rising time, maximum time and square-wave pulse number contained in the trailing edge time.Therefore accumulation square wave number counti (i=1,2,3) contained by three stages of each sound in each priority need to be calculated.Formula is as follows:
count1=2Nr-1；Count2=2 (Nr+Nd)-1；Count3=2 (Nr+Nd+Nf)-1(3)
In formula (2), r, d, f be corresponding rising edge, maximum and trailing edge respectively.
The accumulation square wave number result of calculation in note pulse each period of different priorities is summarized in table 4.
The accumulation square wave number in note pulse each period of table 4 different priorities
The present invention adopts 3 switch k1, k2, k3 simulations to send the alert event of 3 grades, selects AT89C52 single-chip microcomputer as control unit, uses DAC0832 chip to be directly realized by 8 bit data transmission and digital-to-analogue conversions.The software section that C language is write realizes the emulation of 3 grade transfusion device audible alert signal.Initialize the parameter of each software and hardware, the state of main program cycle 3 buttons of detection, proceed to corresponding warning subprogram action sounding.Intervalometer T0 and intervalometer T1 is carried out Initialize installation and opens interruption by warning subprogram, is timed.Adopting intervalometer T1 to control the generation of impulse train, intervalometer T0 interrupt response realizes each stage pulse square wave counting.The time of one impulse train controls directly to be controlled by intervalometer T0, it is necessary to definition delay function reaches several seconds even more durations of impulse train interval.
AT89C52 single-chip microcomputer as key control unit, audible alert signal main program flow chart that the C language of the emulation of 3 grade transfusion device audible alert signal is write as it is shown on figure 3, alarm signal sounding subroutine flow chart as shown in Figure 4.First it is defined arranging, including 3 switch input addresses of (1) definition simulation different priorities signal；(2) substrate frequency, middle pitch DO, bass re, bass sol are set；(3) the correlated count memory element of intervalometer T0 and T1；(4) the pronunciation music score of different priorities is defined.Mastery routine completes (1) and initializes, and counting memory element resets, and arranges intervalometer priority, switch interrupts；(2) entering while statement, the state of cycle detection 3 switch, once detect that certain Single port has low level to input, then program proceeds to corresponding interruption subroutine action sounding.
Alarm signal sounding subprogram and sounding program, first (1) setting according to table 3,4, carry out Initialize installation to intervalometer T0 and intervalometer T1 and open interruption, being timed；(2) program adopts intervalometer T1 to control the generation of impulse train, uses a while circulation to make subprogram remain where one is, and waiting timer T1 completes work, returns again to mastery routine.One flag bit time1 is set to realize the control that T1 subroutine returns.Wherein use delay procedure to complete the interval (generally be several seconds even more) of impulse train interval, and the time of an impulse train controls directly to be controlled by intervalometer T0.The direct-connected DAC0832 chip of single-chip microcomputer realizes 8 bit data transmission and single buffer working method completes digital-to-analogue conversion.
In step 3, use amplifier LM386 to amplify and change the low level audio current signal of D/A converter module DAC0832 output, making output be enough to drive the buzzer connected to send alarm sound.LM386 is a kind of audio frequency integrated amplifier, the power amplifier of the advantage such as have that oneself power consumption is low, adjustable gain is whole, supply voltage scope is big, outward element is few and total harmonic distortion is little, is mainly used in low-voltage consumer product.The indirect adjustable resistance 10K Ω of 2 feet and 3 feet, accesses electric capacity and resistance, regulates voltage gain (maximum 200) between 1 foot and 8 feet.7 foot external bypass capacitor filtering noise reductions.Input is with status reference, and outfan is by the half of automatic bias to supply voltage simultaneously, and under 6V supply voltage, its quiescent dissipation is only 24mW so that LM386 is particularly well-suited to battery powered occasion.
Simulation alarm condition operating process is as follows:
1, when K1 continues to press, send out 10 sound DOresol-DOre DOresol-DOre, after time delay 5s, continue to send this group sound, switch off, then stop alarm after current sound sounding terminates.
2, disconnecting immediately after K1 presses, system can stop after 5 the sound DOresol-DOre that report to the police.
3, when only K2 continues to press (or press after immediately disconnect), send out 3 sound DOresol, after time delay 10s, continue to send this group sound, switch off, then stop alarm after this group sound sounding terminates.If pressing at time delay period K1, then no matter whether K2 continues the state that keeps pressing, conditional response when system all only can be pressed according to K1.
4, when only K3 continues to press (or press after immediately disconnect), send out 2 sound DODO, after time delay 15s, continue to send this group sound, switch off, then stop alarm after this group sound sounding terminates.If pressing at time delay period K1 or K2, then no matter whether K3 continues the state that keeps pressing, conditional response when system all only can be pressed according to K1 or K2.If all pressing at time delay period K1, K2, then no matter whether K3 continues the state that keeps pressing, conditional response when system all only can be pressed according to K1.
Claims (1)
1. the alarm sound production method of a SCM Based transfusion device audible alarm module, it is characterised in that: described audible alarm module includes single-chip computer AT89C52, D/A converter module DAC0832, amplifier LM386 and buzzer；The output of single-chip computer AT89C52 connects the input of D/A converter module DAC0832, and the output of D/A converter module DAC0832 connects the input of amplifier LM386, and the output of amplifier LM386 connects buzzer；The alarm sound production method of described audible alarm module comprises the following steps:
One, alarm sound signal is designed according to national standard YY0709-2009；
Two, single-chip computer AT89C52 and D/A converter module DAC0832 analog simulation signal are utilized；
Three, using amplifier LM386 to amplify emulation signal drives buzzer to send alarm sound；
The specific practice of step one is, different audible alert signal according to national standard YY0709-2009 high priority, medium priority and the low priority formulated, make musical note combination and the impulse train design of the transfusion device alarm sound signal of high priority, medium priority and low priority；
The specific practice of step 2 is, uses single-chip computer AT89C52 as central control unit, by D/A converter module DAC0832, the digital quantity that central control unit exports is converted to respective mode analog quantity, it is achieved corresponding alert audio signal produces；The Timer/Counter utilizing single-chip microcomputer produces the different frequency square-wave signal that each warning scale is corresponding；According to the audible alert signal pulse parameter values set, it is simulated with DAC0832, the accumulation square wave number of 3 the square-wave pulse enumerators rising edges of corresponding trapezoidal sound wave pulse, maximum and trailing edge respectively is set, and calculates accumulation square wave number contained by three stages of each sound in each priority；
The specific practice of step 3 is, uses amplifier LM386 to amplify and changes the low level audio current signal of D/A converter module DAC0832 output, making output be enough to drive the buzzer connected to send alarm sound.
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|---|---|---|---|---|
| CN109658671A (en) * | 2018-12-13 | 2019-04-19 | 中国电子科技集团公司第四十研究所 | A kind of medical electrical equipment auditory alarm system and method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548259A (en) * | 2015-01-15 | 2015-04-29 | 深圳市科曼医疗设备有限公司 | Alarming method of injection pump and injection pump |
| CN105446219A (en) * | 2015-12-18 | 2016-03-30 | 上海力申科学仪器有限公司 | Medical infusion pump alarming sound power amplifier power supply intelligent control system |
| CN105582605B (en) * | 2015-12-28 | 2018-07-06 | 湖南明康中锦医疗科技发展有限公司 | Medical Devices alarm method, device and lung ventilator |
| CN106075650B (en) * | 2016-06-03 | 2022-08-09 | 罗学技 | Infusion alarm and alarm method thereof |
| CN108010537A (en) * | 2017-12-30 | 2018-05-08 | 长沙迪普美医疗科技有限公司 | A kind of audible alarm processing method, device, system |
| CN114078311A (en) * | 2021-11-18 | 2022-02-22 | 东劢医疗科技(苏州)有限公司 | Medical equipment auditory alarm test system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20314749U1 (en) * | 2003-09-24 | 2004-02-12 | Lin, Yu-Yueh, Neihu Chiu | Automatic warning and detection device for continuous drip infusion |
| CN201087871Y (en) * | 2007-04-02 | 2008-07-16 | 赵振平 | Automatic reminding device for medical use |
| CN201235113Y (en) * | 2008-07-11 | 2009-05-13 | 谭启仁 | Single-chip operated venous transfusion alarm |
| CN201320324Y (en) * | 2008-10-15 | 2009-10-07 | 张晓睿 | Transfusion monitor capable of recording and playing medical orders |
-
2013
- 2013-05-10 CN CN201310172867.0A patent/CN104143250B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20314749U1 (en) * | 2003-09-24 | 2004-02-12 | Lin, Yu-Yueh, Neihu Chiu | Automatic warning and detection device for continuous drip infusion |
| CN201087871Y (en) * | 2007-04-02 | 2008-07-16 | 赵振平 | Automatic reminding device for medical use |
| CN201235113Y (en) * | 2008-07-11 | 2009-05-13 | 谭启仁 | Single-chip operated venous transfusion alarm |
| CN201320324Y (en) * | 2008-10-15 | 2009-10-07 | 张晓睿 | Transfusion monitor capable of recording and playing medical orders |
Non-Patent Citations (1)
| Title |
|---|
| 微电脑遥控便携式输液泵的临床应用;张静;《临床工程》;20130228;第28卷(第02期);第92-93页 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109658671A (en) * | 2018-12-13 | 2019-04-19 | 中国电子科技集团公司第四十研究所 | A kind of medical electrical equipment auditory alarm system and method |
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