CN104207754A - Portable pulse measuring instrument with clock function - Google Patents
Portable pulse measuring instrument with clock function Download PDFInfo
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- CN104207754A CN104207754A CN201410479290.2A CN201410479290A CN104207754A CN 104207754 A CN104207754 A CN 104207754A CN 201410479290 A CN201410479290 A CN 201410479290A CN 104207754 A CN104207754 A CN 104207754A
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Abstract
The invention provides a portable pulse measuring instrument with clock function. The portable pulse measuring instrument comprises a single chip microcomputer, and a power supply circuit, a signal acquisition circuit, a real-time electronic clock circuit, a key circuit, a display, an alarming circuit and a voice record-replay circuit which are electrically connected with the interface of the single chip microcomputer, wherein the signal acquisition circuit comprises a photoelectric sensor and an amplifier; the photoelectric sensor is of a fingerstall structure and is arranged at the rear end of a finger for monitoring transmittance of light; the system takes the single chip microcomputer as core; the photoelectric sensor is used for acquiring the pulse signal; a timer in the single chip microcomputer system is used for calculating the time; the pulse signal is amplified and shaped to be sent to the single chip microcomputer; the single chip microcomputer accumulates the pulse to obtain the pulse beating times and display on the display. By adopting the technical scheme, during measuring, the pulse measuring instrument is not in deep contact with people; the time can be calibrated; the pulse times is displayed and broadcast; the convenience and accuracy are improved.
Description
Technical field
The present invention relates to pulses measure apparatus field, be specifically related to a kind of Portable pulse measurement instrument with time clock feature.
Background technology
Electronic sphygmograph has obtained application widely in our daily life, but its outside appurtenances is many, a lot of accessory is needed to be close to human pulse during measurement, inconvenient operation, and it is very many by various interference factor, error in reading is comparatively large, and especially for the user of lacking experience, it cannot popularize practicality.
In order to improve simplicity and the degree of accuracy of electronic sphygmograph, the present invention proposes a kind of electronic sphygmograph based on 51 single-chip microcomputers, solving the problem.
Summary of the invention
The object of the invention is to overcome prior art Problems existing, a kind of Portable pulse measurement instrument with time clock feature is provided.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of Portable pulse measurement instrument with time clock feature, it is characterized in that, comprise single-chip microcomputer, and the power circuit be electrically connected with interface microcontroller respectively, signal acquisition circuit, real-time electronic clock circuit, key circuit, display, warning circuit, audio record circuit, wherein, described signal acquisition circuit comprises photoelectric sensor and amplifier, described photoelectric sensor is fingerstall structure, it is arranged on finger tips monitoring transmittance, described photoelectric sensor light-receiving mode is transmission-type, its transmitting illuminant is equal with the distance of photoreceptor and be arranged symmetrically with, system take single-chip microcomputer as core, pulse signal is gathered with photoelectric sensor, and utilize Single Chip Microcomputer (SCM) system timer internal to carry out computation time, this pulse signal is through amplifying, single-chip microcomputer is given in shaping, single-chip microcomputer obtains beat pulse number of times by paired pulses is cumulative, and display over the display.
Further, the amplifier in described signal acquisition circuit adopts LM324 amplifier chip.
Further, described single-chip microcomputer is STC89C52 chip.
Further, described display is LM016L liquid crystal display.
Further, independent keyboard is adopted to input in described key circuit.
Further, buzzer sounding alarm is adopted in described warning circuit.
Further, DS1302 clock chip is adopted in described real-time electronic clock circuit.
Further, ISD4004 recording and playback ic is adopted in described audio record circuit.
The invention has the beneficial effects as follows:
Adopt technical solution of the present invention, during measurement, contact without deep with people, healthy pollution-free, safeguard easy to clean, and the adjustable time, display and report frequency of pulse, improve its simplicity and degree of accuracy, be easy to carry about with one.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention;
Fig. 2 is signal acquisition circuit figure;
Fig. 3 is single-chip minimum system structure chart;
Fig. 4 is display circuit;
Fig. 5 is warning circuit figure;
Fig. 6 is real-time electronic clock circuit diagram;
Fig. 7 is system main actions flow chart;
Fig. 8 is signals collecting flow chart.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
As shown in Figure 1, a kind of Portable pulse measurement instrument with time clock feature, it is characterized in that, comprise single-chip microcomputer, and the power circuit be electrically connected with interface microcontroller respectively, signal acquisition circuit, real-time electronic clock circuit, key circuit, display, warning circuit, audio record circuit, wherein, described signal acquisition circuit comprises photoelectric sensor and amplifier, described photoelectric sensor is fingerstall structure, it is arranged on finger tips monitoring transmittance, described photoelectric sensor light-receiving mode is transmission-type, its transmitting illuminant is equal with the distance of photoreceptor and be arranged symmetrically with.
As shown in Figure 2, signal acquisition circuit comprises photoelectric sensor and LM324 signal processing part is grouped into, and LM324 is made up of 4 amplifier integrated circuits, just signal acquisition circuit is constituted by this two-part combining closely, the process of its work is: when finger finger tip is placed on after in the photoelectric sensor of finger cot type, the infrared ray radiation that infrarede emitting diode produces is to the finger position of human body, through finger tissue reflection and decay by being contained in photosensitive three pipes on this side, position to receive its transillumination and it is converted to the signal of telecommunication, the signal of telecommunication is amplified by the low pass of LM2 again, become the noisy pulsation of superposition sinusoidal wave, middle R18 and C19 forms the interference that low pass filter remains with further filtering in this section, cut-off frequency is determined by R18 and C19, amplifier LM2 is responsible for signal to amplify, again this amplifying signal is become square wave by LM1, spike is become again through LM3, this spike is synchronous with pulse, this impulse level is delivered to single-chip microcomputer/INTO foot by R21, carry out the calculating to heart rate and display, simultaneously, this pulse is reminded by LED indicating circuit, be equivalent to beating of pulse, as shown in Figure 8, for signals collecting flow chart, when P3.2 mouth is low level, this pulse signal will send into single-chip microcomputer, processed by single-chip microcomputer Received signal strength, when the time of single-chip microcomputer inside setting exceeds, single-chip microcomputer will no longer to P3.2 mouth acquired signal.
As shown in Figure 3, described single-chip microcomputer is STC89C52 chip, single-chip microcomputer inside has one for forming the high-gain inverting amplifier of agitator, its input is chip pin XTAL1, outfan is XTAL2, this two pin cross-over connection quartz oscillator X1 and trimming capacitor C 1, C2, form a stable self-excited oscillator, the value of C1 and C2 in circuit is 30pF, P0 mouth connects pull-up resistor, in actual applications, use as the address/data lines of Single Chip Microcomputer (SCM) system in P0 mouth overwhelming majority situation, address is when transmitting, sometimes to latch and just can come into force, so add pull-up resistor, the circuit that RST connects is reset circuit, this connection of this circuit just can make circuit reset after powering on, so be called electrify restoration circuit, electrification reset is realized by the capacitor charging of external reset circuit, can also realize resetting by button simultaneously, EA connects high level, this foot can not be unsettled.
As shown in Figure 4, described display is LM016L liquid crystal display, this chip can show 16 × 2 characters, more much more in the quantity of display character than former seven segment digital tubes light-emitting diode display, and require that the numerical value of LM016L is synchronous with pulse signal, LM016L liquid crystal achieves good control in this problem of simultaneous display, 7 foot to 14 feet of LM016L are connected on pull-up resistor, ensure the working power of liquid crystal display, the power supply of pull-up resistor will enough be used simultaneously, to guarantee liquid crystal display always, 1 foot ground connection, 2 feet connect power supply and slide rheostat, 3 feet connect slide rheostat, the same with on exclusion of power requirement on 2 feet, 4 feet, 5 feet, 6 feet connect P2 mouth, for receiving the pulse reading that singlechip chip is sent here, the step that LCDs obtains pulse is: the pulse of waiting signal Acquisition Circuit, write command, write data, display position is set, display character amount, display string, time delay.
Independent keyboard is adopted to input in described key circuit, key circuit comprises recording testing circuit and button calibration circuit, they access single-chip microcomputer respectively, realize the function of standalone module separately, also have an Independent keys to be options button key in addition, when it is by next time, pulse test can be carried out, when it is again by next time, previous status can be reverted to again, i.e. real-time displaying time.
As shown in Figure 5, in described warning circuit, adopt buzzer sounding alarm, in warning circuit, use audion, resistance and buzzer; when surveyed Pulse Rate exceeds normal pulse scope; buzzer can send sound, reminds measurand, and the audion used in circuit can effective protection circuit.
As shown in Figure 6, DS1302 clock chip is adopted in described real-time electronic clock circuit, the P1.1 mouth of the data terminal access single-chip microcomputer of DS1302, after powering to single-chip microcomputer, LM016L liquid crystal will show the current time, and is real-time display, adds backup battery in the present embodiment in addition DS1302 chip, can also work after a loss of power, realize serving as the function of electronic clock at ordinary times.
Adopt in described audio record circuit ISD4004 recording and playback ic and and audio frequency amplifier LM386, the report of pulse measured by main realization, after single-chip microcomputer is started working, after measuring pulse, by Single-chip Controlling and in conjunction with speech chip, audio frequency amplifier and loudspeaker etc. realize the report of Pulse Rate.
Principle of the present invention:
As shown in Figure 7, after system electrification, system is initialized; Initialize routine mainly completes the setting to the duty of special register, runs mode and each port in single-chip microcomputer; After system initialization, carry out the work such as timer interruption, external interrupt, display, different external hardwares controls different subprograms, when just starting, real-time displaying time, when pressing options button first time, Dynamic Announce frequency of pulse, after exceeding pulse normal range, buzzer will ring, the number of times that final liquid crystal display screen meeting display pulse is final is also reported out, when pressing options button second time, again can get back to the interface of time.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the Portable pulse measurement instrument with time clock feature, it is characterized in that, comprise single-chip microcomputer, and the power circuit be electrically connected with interface microcontroller respectively, signal acquisition circuit, real-time electronic clock circuit, key circuit, display, warning circuit, audio record circuit, wherein, described signal acquisition circuit comprises photoelectric sensor and amplifier, described photoelectric sensor is fingerstall structure, it is arranged on finger tips monitoring transmittance, described photoelectric sensor light-receiving mode is transmission-type, its transmitting illuminant is equal with the distance of photoreceptor and be arranged symmetrically with.
2. the Portable pulse measurement instrument of band time clock feature according to claim 1, is characterized in that, the amplifier in described signal acquisition circuit adopts LM324 amplifier chip.
3. the Portable pulse measurement instrument of band time clock feature according to claim 1, is characterized in that, described single-chip microcomputer is STC89C52 chip.
4. the Portable pulse measurement instrument of band time clock feature according to claim 1, is characterized in that, described display is LM016L liquid crystal display.
5. the Portable pulse measurement instrument of band time clock feature according to claim 1, is characterized in that, adopts independent keyboard to input in described key circuit.
6. the Portable pulse measurement instrument of band time clock feature according to claim 1, is characterized in that, adopts buzzer sounding alarm in described warning circuit.
7. the Portable pulse measurement instrument of band time clock feature according to claim 1, is characterized in that, adopts DS1302 clock chip in described real-time electronic clock circuit.
8. the Portable pulse measurement instrument of band time clock feature according to claim 1, is characterized in that, adopts ISD4004 recording and playback ic in described audio record circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410479290.2A CN104207754A (en) | 2014-09-19 | 2014-09-19 | Portable pulse measuring instrument with clock function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410479290.2A CN104207754A (en) | 2014-09-19 | 2014-09-19 | Portable pulse measuring instrument with clock function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105011918A (en) * | 2015-08-12 | 2015-11-04 | 湖北科技学院 | Quick pulse wave detection system, detection method and detection program |
| CN105725986A (en) * | 2016-04-22 | 2016-07-06 | 湖北三峡职业技术学院 | Infrared pulsemeter based on single chip microcomputer |
| CN105944217A (en) * | 2016-07-04 | 2016-09-21 | 中国计量大学 | Intelligent sleeping device based on human-computer interaction |
| CN106798548A (en) * | 2017-03-14 | 2017-06-06 | 南宁市高光信息技术有限公司 | A kind of SCM Based sphygmometer |
| CN113616163A (en) * | 2021-10-14 | 2021-11-09 | 慕思健康睡眠股份有限公司 | Sleep monitoring circuit and sleep monitoring system |
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| CN204105952U (en) * | 2014-09-19 | 2015-01-21 | 苏州经贸职业技术学院 | A kind of Portable pulse measurement instrument with time clock feature |
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| CN2590533Y (en) * | 2002-10-25 | 2003-12-10 | 王树泽 | Ear muffs type self-monitoring instrument |
| CN1692874A (en) * | 2004-05-08 | 2005-11-09 | 香港中文大学 | Finger ring type physiological information monitoring device |
| CN201076457Y (en) * | 2007-06-29 | 2008-06-25 | 洪金叶 | Finger type pulse detection wireless transmission structure |
| CN101411618A (en) * | 2007-10-17 | 2009-04-22 | 潘卫江 | Finger type instrument for detecting sphygmus and blood oxygen saturation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105011918A (en) * | 2015-08-12 | 2015-11-04 | 湖北科技学院 | Quick pulse wave detection system, detection method and detection program |
| CN105725986A (en) * | 2016-04-22 | 2016-07-06 | 湖北三峡职业技术学院 | Infrared pulsemeter based on single chip microcomputer |
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| CN113616163A (en) * | 2021-10-14 | 2021-11-09 | 慕思健康睡眠股份有限公司 | Sleep monitoring circuit and sleep monitoring system |
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Application publication date: 20141217 |