CN102389311B - Multi-stage dimmable digital pulse oximetry and using method thereof - Google Patents
Multi-stage dimmable digital pulse oximetry and using method thereof Download PDFInfo
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- CN102389311B CN102389311B CN 201110201906 CN201110201906A CN102389311B CN 102389311 B CN102389311 B CN 102389311B CN 201110201906 CN201110201906 CN 201110201906 CN 201110201906 A CN201110201906 A CN 201110201906A CN 102389311 B CN102389311 B CN 102389311B
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Abstract
The invention discloses a multi-stage dimmable digital pulse oximetry and a using method thereof, and relates to the technical field of medical equipment. The oximetry comprises a singlechip, a current-limiting resistance regulating circuit, a photosensitive tube and a light emitting tube, wherein the current-limiting resistance regulating circuit is connected with the singlechip and the light emitting tube, and is used for regulating the light intensity of the light emitting tube according to a control instruction of the singlechip; the light emitting tube is used for alternatively emitting two beams according to the light intensity; the photosensitive tube is connected with the singlechip, and is used for receiving transmission light after the two beams pass through a living body, converting the transmission light into a digital signal, and transmitting the digital signal to the singlechip; and the singlechip is used for receiving the digital signal, and transmitting the control instruction to the current-limiting resistance regulating circuit according to the digital signal, or calculating to obtain blood oxygen data. According to the oximetry, the measurement range of the oximetry is fundamentally enlarged by multi-stage regulation to the light intensity of the light emitting tube.
Description
Technical field
The present invention relates to the Medical Equipment technical field, particularly a kind of digital pulse blood oxygen instrument and using method thereof of multistage light modulation.
Background technology
The luminous intensity of the luminous tube of existing blood oxygen instrument is immutable, and it is widely different to carry out the tested life entity (such as child's finger and adult's finger) that oximetry data measures.The luminous intensity of supposing luminous tube is certain, and middle life entity is different, and one is child's finger, and diameter is very little, and another is adult's finger, and diameter is very large.Like this, the light difference that life entity is crossed in transmission is very large, and the light intensity difference that photosensitive tube receives is very large, and the intensity difference of digital signal that sends to single-chip microcomputer after the conversion is very large; If two life entity difference are enough large, must cause the intensity of the wherein set of number signal that single-chip microcomputer receives to exceed effective range.Like this, same machine just can not be tested this two classes finger.
As if at present, the luminous intensity of the luminous tube of part-blood oxygen instrument can change to people sensation, but actual it just prolonged fluorescent lifetime by software.Because the luminous intensity of luminous tube is not fundamentally adjusted in this improvement, so very little for the enlarge measurement range image.
Summary of the invention
The technical problem that (one) will solve
The technical problem to be solved in the present invention is: how to provide a kind of digital pulse blood oxygen instrument and using method thereof of multistage light modulation, to enlarge the measuring range of blood oxygen instrument.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of digital pulse blood oxygen instrument of multistage light modulation, it comprises: single-chip microcomputer, current-limiting resistance regulating circuit, photosensitive tube and luminous tube.
Described current-limiting resistance regulating circuit 200 connects described single-chip microcomputer 100 and luminous tube 500, is used for the luminous intensity of regulating described luminous tube 500 according to the control instruction of described single-chip microcomputer 100;
Described luminous tube 500 is used for alternately sending two-beam according to described luminous intensity;
Described photosensitive tube 400 connects described single-chip microcomputer 100, is used for receiving described two-beam through the transillumination after the life entity, and sends to described single-chip microcomputer 100 after described transillumination is converted to digital signal;
Described single-chip microcomputer 100 is used for receiving described digital signal, and sends described control instruction to described current-limiting resistance regulating circuit 200 according to described digital signal, perhaps calculates oximetry data.
Preferably, described current-limiting resistance regulating circuit 200 comprise can adjusting resistance value current-limiting resistance 201, described current-limiting resistance 201 is connected with described luminous tube 500.
Preferably, described oximetry data comprises: blood oxygen levels, pulse frequency value, pulse rod figure, pulse wave and PI value.
Preferably, described blood oxygen instrument also comprises luminous tube control circuit 300, described luminous tube control circuit 300 connects described single-chip microcomputer 100 and luminous tube 500, is used for controlling according to the control signal of described single-chip microcomputer 100 sequence of light and the glow frequency of described luminous tube 500.
The present invention also provides a kind of using method of digital pulse blood oxygen instrument of described multistage light modulation, and it comprises step:
S100: luminous tube control circuit control luminous tube emission incident illumination, photosensitive tube receives described incident illumination through the transillumination behind the life entity, and sends to described single-chip microcomputer after described transillumination is converted to digital signal;
S200: described single-chip microcomputer receives described digital signal, and whether the intensity of judging described digital signal in preset range, if so, calculates execution in step S600 behind the oximetry data according to described digital signal, otherwise, execution in step S300;
S300: whether the intensity of judging described digital signal surpasses predetermined upper limit value, if so, and execution in step S400, otherwise execution in step S500;
S400: whether the resistance of judging current-limiting resistance can tune up, and if so, carries out described step S100 after tuning up the resistance of described current-limiting resistance, otherwise, execution in step S600 after the prompting error message;
S500: whether the resistance of judging described current-limiting resistance can be turned down, if so, carries out described step S100 after turning the resistance of described current-limiting resistance down, otherwise, execution in step S600 after the prompting error message;
S600: judge whether to continue to measure, if so, carry out described step S100, otherwise, finish to measure.
Preferably, also comprised step S000 before described step S100: single-chip microcomputer initializes, and the resistance of setting described current-limiting resistance is initial value.
Preferably, among the described step S100, described luminous tube control circuit control luminous tube according to certain glow frequency and sequence of light alternate emission HONGGUANG and infrared light as described incident illumination.
Preferably, described certain glow frequency is 120Hz.
Preferably, described step S200 specifically comprises step:
S201: described single-chip microcomputer receives described digital signal, and whether the intensity of judging described digital signal in preset range, if so, and execution in step S202, otherwise, execution in step S300;
S202: at predetermined amount of time, the described digital signal of multi collect calculates oximetry data, execution in step S600 according to the result of multi collect.
Preferably, described predetermined amount of time is 6 seconds to 8 seconds.
(3) beneficial effect
Digital pulse blood oxygen instrument and the using method thereof of a kind of multistage light modulation of the present invention, by in the luminous tube circuit, setting up current-limiting resistance, and adjust in real time the resistance of current-limiting resistance according to the signal intensity of photosensitive tube collection, and then realize multistage adjusting to the luminous tube luminous intensity, thereby in the measuring range that has fundamentally enlarged blood oxygen instrument.
Description of drawings
Fig. 1 is the structural representation of the digital pulse blood oxygen instrument of the described a kind of multistage light modulation of the embodiment of the invention;
Fig. 2 is the using method flow chart of the digital pulse blood oxygen instrument of the described a kind of multistage light modulation of the embodiment of the invention.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is the structural representation of the digital pulse blood oxygen instrument of the described a kind of multistage light modulation of the embodiment of the invention.As shown in Figure 1, the digital pulse blood oxygen instrument of the described a kind of multistage light modulation of the embodiment of the invention comprises: single-chip microcomputer 100, current-limiting resistance regulating circuit 200, luminous tube control circuit 300, photosensitive tube 400 and luminous tube 500.
Described current-limiting resistance regulating circuit 200 connects described single-chip microcomputer 100 and luminous tube 500, is used for the luminous intensity of regulating described luminous tube 500 according to the control instruction of described single-chip microcomputer 100.Described current-limiting resistance regulating circuit 200 comprise can adjusting resistance value current-limiting resistance 201, described current-limiting resistance 201 is connected with described luminous tube 500.Like this, by regulating the resistance of described current-limiting resistance 201, can change the current value through described luminous tube 500, and then regulate the luminous intensity of described luminous tube 500.
Described luminous tube control circuit 300 connects described single-chip microcomputer 100 and luminous tube 500, is used for controlling according to the control signal of described single-chip microcomputer 100 sequence of light and the glow frequency of described luminous tube 500.
Described luminous tube 500 is used for alternately sending HONGGUANG and infrared two-beam according to described luminous intensity, sequence of light and glow frequency.
Described photosensitive tube 400 connects described single-chip microcomputer 100, is used for receiving described HONGGUANG and infrared two-beam through the transillumination after the life entity, and sends to described single-chip microcomputer 100 after described transillumination is converted to digital signal.
Described single-chip microcomputer 100 is used for receiving described digital signal, and sends described control instruction to described current-limiting resistance regulating circuit 200 according to described digital signal, perhaps calculates oximetry data.Described oximetry data comprises: blood oxygen levels, pulse frequency value, PI value, pulse rod figure and pulse wave.
Fig. 2 is the using method flow chart of the digital pulse blood oxygen instrument of the described a kind of multistage light modulation of the embodiment of the invention.As shown in Figure 2, described method comprises step:
S000: single-chip microcomputer initializes, and the resistance of setting described current-limiting resistance is initial value.Described initial value is the resistance that is applicable to measure the current-limiting resistance of most of normal person's finger tips, and when circuit voltage was 3 volts, described initial value was generally 20 Europe.
S100: luminous tube control circuit control luminous tube according to certain glow frequency and sequence of light alternate emission HONGGUANG and infrared light as incident illumination, photosensitive tube receives described incident illumination through the transillumination behind the life entity, and sends to described single-chip microcomputer after described transillumination is converted to digital signal.Described certain glow frequency is 120hz.
S200: described single-chip microcomputer receives described digital signal, and whether the intensity of judging described digital signal in preset range, if so, calculates execution in step S600 behind the oximetry data according to described digital signal, otherwise, execution in step S300.
Described digital signal is obtained through after the analog digital conversion by described transillumination, the intensity of described digital signal is generally with the HONGGUANG frequency demarcating after the analog digital conversion, the described HONGGUANG frequency that receives when single-chip microcomputer thinks that the intensity of described digital signal is in preset range between the 80000Hz to 296296Hz the time.In order to improve the accuracy of judgement degree, also can be simultaneously with reference to the infrared light frequency after the analog digital conversion.
Described step S200 specifically comprises:
Step S201: described single-chip microcomputer receives described digital signal, and whether the intensity of judging described digital signal in preset range, if so, and execution in step S202, otherwise, execution in step S300;
Step S202: within 6 seconds to 8 second time, the described digital signal of multi collect calculates oximetry data, execution in step S600 according to the result of multi collect.
S300: whether the intensity of judging described digital signal surpasses predetermined upper limit value, if so, and execution in step S400, otherwise execution in step S500.
S400: whether the resistance of judging current-limiting resistance can tune up, and if so, carries out described step S100 after tuning up the resistance of described current-limiting resistance, otherwise, execution in step S600 after the prompting error message.
S500: whether the resistance of judging described current-limiting resistance can be turned down, if so, carries out described step S100 after turning the resistance of described current-limiting resistance down, otherwise, execution in step S600 after the prompting error message.
Among described step S400 and the S500, the adjusting to the resistance of described current-limiting resistance can tune up or turn down according to certain step-length (such as 5 Europe), or regulate according to default particular value.In the present embodiment, described current-limiting resistance is regulated according to default particular value, and described default particular value is followed successively by 5.1 Europe, 20 Europe, 49.9 Europe and 100 Europe.
S600: judge whether to continue to measure, if so, carry out described step S100, otherwise, finish to measure.
Digital pulse blood oxygen instrument and the using method thereof of the described a kind of multistage light modulation of the embodiment of the invention, by in the luminous tube circuit, setting up current-limiting resistance, and adjust in real time the resistance of current-limiting resistance according to the signal intensity of photosensitive tube collection, and then realize multistage adjusting to the luminous tube luminous intensity, thereby in the measuring range that has fundamentally enlarged blood oxygen instrument.
Above embodiment only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; in the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (9)
1. the digital pulse blood oxygen instrument of a multistage light modulation is characterized in that, comprising: single-chip microcomputer (100), current-limiting resistance regulating circuit (200), photosensitive tube (400) and luminous tube (500);
Described current-limiting resistance regulating circuit (200) connects described single-chip microcomputer (100) and luminous tube (500), is used for the luminous intensity of regulating described luminous tube (500) according to the control instruction of described single-chip microcomputer (100);
Described luminous tube (500) is used for alternately sending two-beam according to described luminous intensity;
Described photosensitive tube (400) connects described single-chip microcomputer (100), is used for receiving described two-beam through the transillumination after the life entity, and sends to described single-chip microcomputer (100) after described transillumination is converted to digital signal;
Described single-chip microcomputer (100) is used for receiving described digital signal, and sends described control instruction to described current-limiting resistance regulating circuit (200) according to described digital signal, perhaps calculates oximetry data;
Described blood oxygen instrument also comprises luminous tube control circuit (300), described luminous tube control circuit (300) connects described single-chip microcomputer (100) and luminous tube (500), is used for controlling according to the control signal of described single-chip microcomputer (100) sequence of light and the glow frequency of described luminous tube (500).
2. blood oxygen instrument as claimed in claim 1 is characterized in that, described current-limiting resistance regulating circuit (200) comprise can adjusting resistance value current-limiting resistance (201), described current-limiting resistance (201) is connected with described luminous tube (500).
3. blood oxygen instrument as claimed in claim 1 is characterized in that described oximetry data comprises: blood oxygen levels, pulse frequency value, pulse rod figure, pulse wave and PI value.
4. such as the using method of the digital pulse blood oxygen instrument of the described multistage light modulation of one of claims 1 to 3, it is characterized in that, comprise step:
S100: luminous tube control circuit control luminous tube emission incident illumination, photosensitive tube receives described incident illumination through the transillumination behind the life entity, and sends to described single-chip microcomputer after described transillumination is converted to digital signal;
S200: described single-chip microcomputer receives described digital signal, and whether the intensity of judging described digital signal in preset range, if so, calculates execution in step S600 behind the oximetry data according to described digital signal, otherwise, execution in step S300;
S300: whether the intensity of judging described digital signal surpasses predetermined upper limit value, if so, and execution in step S400, otherwise execution in step S500;
S400: whether the resistance of judging current-limiting resistance can tune up, and if so, carries out described step S100 after tuning up the resistance of described current-limiting resistance, otherwise, execution in step S600 after the prompting error message;
S500: whether the resistance of judging described current-limiting resistance can be turned down, if so, carries out described step S100 after turning the resistance of described current-limiting resistance down, otherwise, execution in step S600 after the prompting error message;
S600: judge whether to continue to measure, if so, carry out described step S100, otherwise, finish to measure.
5. method as claimed in claim 4 is characterized in that, also comprises step S000 before described step S100: single-chip microcomputer initializes, and the resistance of setting described current-limiting resistance is initial value.
6. method as claimed in claim 5 is characterized in that, among the described step S100, described luminous tube control circuit control luminous tube according to certain glow frequency and sequence of light alternate emission HONGGUANG and infrared light as described incident illumination.
7. method as claimed in claim 6 is characterized in that, described certain glow frequency is 120Hz.
8. method as claimed in claim 4 is characterized in that, described step S200 specifically comprises step:
S201: described single-chip microcomputer receives described digital signal, and whether the intensity of judging described digital signal in preset range, if so, and execution in step S202, otherwise, execution in step S300;
S202: within a predetermined period of time, the described digital signal of multi collect calculates oximetry data, execution in step S600 according to the result of multi collect.
9. method as claimed in claim 8 is characterized in that, described predetermined amount of time is 6 seconds to 8 seconds.
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| CN104665802B (en) * | 2013-11-28 | 2019-05-14 | 腾讯科技（深圳）有限公司 | Pulse measurement device, system and the method for measuring pulse |
| CN105615895A (en) * | 2015-12-25 | 2016-06-01 | 广州视源电子科技股份有限公司 | Light adjusting method and system for oxyhemoglobin saturation measuring instrument, measuring instrument and measuring method |
| CN107550498B (en) * | 2016-06-30 | 2024-02-09 | 北京超思电子技术有限责任公司 | Blood oxygen measuring device and measuring method thereof |
| CN107773250A (en) * | 2017-11-22 | 2018-03-09 | 江苏康尚生物医疗科技有限公司 | A kind of photoelectric sphyg BOLD contrast quick dimming controlling method of automatic growth control |
| CN108498074B (en) * | 2018-01-24 | 2019-01-29 | 西安交通大学 | The more light intensity near infrared light measurement methods of long-time micro energy lose |
| CN110301888A (en) * | 2018-03-27 | 2019-10-08 | 佳能株式会社 | Measuring device and computer readable storage medium |
| CN109512403B (en) * | 2018-11-05 | 2021-11-26 | 北京招通致晟科技有限公司 | Finger tip photoelectric volume pulse wave detection method, device and system |
| CN112234693A (en) * | 2020-08-28 | 2021-01-15 | 珠海格力电器股份有限公司 | Bus charging control device, driver and bus charging control method thereof |
| CN113693593A (en) * | 2020-12-22 | 2021-11-26 | 深圳市柯林健康医疗有限公司 | Parameter determination method and device of blood oxygen detection equipment and controller |
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| US6707257B2 (en) * | 2002-08-08 | 2004-03-16 | Datex-Ohmeda, Inc. | Ferrite stabilized LED drive |
| US7937129B2 (en) * | 2005-03-21 | 2011-05-03 | Masimo Corporation | Variable aperture sensor |
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| US7468036B1 (en) * | 2004-09-28 | 2008-12-23 | Impact Sports Technology, Inc. | Monitoring device, method and system |
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Address after: Qin 066004 West Street in Hebei province Qinhuangdao City Economic and Technological Development Zone No. 112 Patentee after: Kangtai medical system (Qinhuangdao) Limited by Share Ltd Address before: Qin 066004 West Street in Hebei province Qinhuangdao City Economic and Technological Development Zone No. 112 Patentee before: Qinhuangdao Contec Medical Systems Co.,Ltd. |