CN201743707U - Fetal heart rate instrument capable of displaying both fetal heart rate (FHR) and fetal rhythm wave - Google Patents
Fetal heart rate instrument capable of displaying both fetal heart rate (FHR) and fetal rhythm wave Download PDFInfo
- Publication number
- CN201743707U CN201743707U CN2010205003639U CN201020500363U CN201743707U CN 201743707 U CN201743707 U CN 201743707U CN 2010205003639 U CN2010205003639 U CN 2010205003639U CN 201020500363 U CN201020500363 U CN 201020500363U CN 201743707 U CN201743707 U CN 201743707U
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Abstract
The utility model relates to a fetal heart rate instrument capable of displaying both the fetal heart rate (FHR) and the fetal rhythm wave. The fetal heart rate instrument includes an excitation circuit, an ultrasonic sensing probe, a reception & demodulation circuit, a filtering amplification circuit, a comparator, a single chip microcomputer, a display screen and a control button, the ultrasonic sensing probe is respectively connected to the excitation circuit and the reception & demodulation circuit; the reception & demodulation circuit is connected to the filtering amplification circuit; the filtering amplification circuit outputs in two ways, one way is directly connected to the AD conversion channel of the single chip microcomputer, the other way is connected to the single chip microcomputer via the comparator; the display screen and the control button are connected to the single chip microcomputer. The fetal heart rate instrument not only can detect the FHR to obtain the heart rate variation, and also can display the heat beat wave and bar graph for indicating the heatbeat conditions, furthermore, can alarm when the FHR is abnormal, thereby improving the measurement accuracy and display definition, enhancing the vision sense and convenience of operation, and being more practical and suitable for family use.
Description
Technical field
This utility model relates to fetal rhythm monitoring field, particularly relates to the fetal heart frequency instrument that a kind of fetal rhythm rate and fetal rhythm waveform show simultaneously.
Background technology
The inspection of fetal rhythm rate is one necessary in the conventional prenatal diagnosis of hospital, and monitoring fetal heart frequency in time, accurately is the important measures that guarantee anemia of pregnant woman and foetus health.Along with the increasing attention that fetal heart frequency is detected, home-use fetus-voice meter progressively enters into market, is convenient to the anemia of pregnant woman and in time understands the fetus situation at home, as note abnormalities and also can in time take corresponding measure, guarantees mother and baby's safety.
At present, existing fetal heart frequency instrument can only carry out simple signal conversion processes by ultrasound transducer probe, obtain corresponding heart rate value, can not react the power and the heartbeat waveform of heart beating, when the fetal heartbeat power is unusual, can not in time detect, and display result is eye-catching inadequately, neglects abnormal fetal heart rate signal easily, delay treatment is because of failing to reach best result of use.
This shows that above-mentioned existing fetal heart frequency instrument obviously still exists inconvenience and defective in structure and use, and demands urgently further being improved.How to found and a kind ofly can not only detect fetal heart frequency, obtain the changes in heart rate situation, and the heartbeat waveform and the rod that can show indication heart beating power are schemed, and can when the fetal rhythm rate is in abnormal condition, start the fetal rhythm rate of new structure of warning function and the fetal heart frequency instrument that the fetal rhythm waveform shows simultaneously automatically, real current this area utmost point that belongs to needs improved target.
The utility model content
The technical problems to be solved in the utility model provides the fetal heart frequency instrument that a kind of fetal rhythm rate and fetal rhythm waveform show simultaneously, make it can not only detect fetal heart frequency, obtain the changes in heart rate situation, and the heartbeat waveform and the rod that can show indication heart beating power are schemed, and can when the fetal rhythm rate is in abnormal condition, start warning function automatically, thereby overcome the deficiency of existing fetal heart frequency instrument.
For solving the problems of the technologies described above, the fetal heart frequency instrument that this utility model fetal rhythm rate and fetal rhythm waveform show simultaneously, comprise exciting circuit, ultrasonic sensing probe, receiving demodulation circuit, filter amplification circuit, comparator, single-chip microcomputer, display screen and control button, wherein: the ultrasonic sensing probe is connected with receiving demodulation circuit with exciting circuit respectively; Receiving demodulation circuit is connected with filter amplification circuit; Filter amplification circuit is divided two-way output, and one the tunnel is connected directly to the AD ALT-CH alternate channel of single-chip microcomputer, and another road is connected with single-chip microcomputer by comparator; Display screen and control button all are connected on the single-chip microcomputer.
As a kind of improvement of the present utility model, described display screen is the TFT chromatic liquid crystal screen.
Described filter amplification circuit also is connected with audio power amplifier circuit, and audio power amplifier circuit is connected with speaker.
After adopting such design, this utility model can not only detect fetal heart frequency, obtain the changes in heart rate situation, and can show heartbeat waveform and the rod figure that indicates the heart beating power, and can when being in abnormal condition, the fetal rhythm rate start redness indication warning function by display screen, thereby certainty of measurement and display resolution have been improved, strengthened the intuitive and the convenience of operation, be suitable for practicality more, also be more conducive to family and apply.
Description of drawings
Above-mentioned only is the general introduction of technical solutions of the utility model, and for can clearer understanding technological means of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing and the specific embodiment.
Fig. 1 is the composition sketch map of the fetal heart frequency instrument that shows simultaneously of this utility model fetal rhythm rate and fetal rhythm waveform.
Fig. 2 is that the signal of the fetal heart frequency instrument that shows simultaneously of this utility model fetal rhythm rate and fetal rhythm waveform moves towards sketch map.
Fig. 3 is that the heart rate value of the fetal heart frequency instrument that shows simultaneously of this utility model fetal rhythm rate and fetal rhythm waveform is gathered sketch map.
The specific embodiment
Please in conjunction with shown in Figure 1, the fetal heart frequency instrument that a kind of fetal rhythm rate of this utility model and fetal rhythm waveform show simultaneously mainly comprises exciting circuit, ultrasonic sensing probe, receiving demodulation circuit, filter amplification circuit, comparator, single-chip microcomputer, display screen and control button.Wherein, the ultrasonic sensing probe is connected with receiving demodulation circuit with exciting circuit respectively, and receiving demodulation circuit is connected with filter amplification circuit, and display screen and control button all are connected on the single-chip microcomputer.Filter amplification circuit is divided two-way output, and one the tunnel is connected directly to the AD ALT-CH alternate channel of single-chip microcomputer, and another road is connected with single-chip microcomputer by comparator.
Preferable, display screen of the present utility model adopts the TFT chromatic liquid crystal screen, and filter amplification circuit connects an audio power amplifier circuit again, and audio power amplifier circuit also is connected with speaker.
Please cooperate and consult shown in Figure 2ly, when using this utility model, by the normal range value of software set fetal heart frequency value, start the fetal heart frequency instrument then earlier.Produce the pumping signal of 2MHz and be sent to the ultrasonic sensing probe by exciting circuit, ultrasonic transduction sheet emission ultrasound wave and be the signal of telecommunication with the heart beating analog signal conversion of reflected back, carry out demodulation, filtering, amplification afterwards, the fetal heart rate signal that obtains is divided into three tunnel: one road signal and imports speaker monitoring fetal heart sound behind audio frequency power amplifier; Another road directly is sent to single-chip microcomputer (for example STM32 single-chip microcomputer) and carries out the AD conversion, obtains heartbeat waveform and rod figure through digital filtering; The Third Road signal, cooperation is consulted shown in Figure 3, after the comparator shaping, is caught by single-chip microcomputer, and obtains heart rate value with Filtering Processing as calculated.At last heart rate value, heartbeat waveform and the excellent figure that obtains is presented on the display screen: in the time of in heart rate value is in normal range, heart rate value is shown in green; When the heart rate value overrun, heart rate value is shown in red, thereby realizes the red alarm function of fetal rhythm rate.
Wherein, heartbeat waveform and excellent figure can obtain by the following method: with the fetal heart rate signal of a single-chip microcomputer input dividing potential drop as heart beating voltage, and this analog quantity converted to digital quantity, this digital quantity of timing acquiring, in order to improve accuracy and stability, can gather 500 times in per 1 second, per 6 sampled values are got a meansigma methods as heart beating voltage, and heart beating voltage judged, the heart beating magnitude of voltage is output as the ordinate value that shows heartbeat signal waveform and excellent figure, the many points of the each demonstration of the abscissa of heartbeat waveform, promptly abscissa adds 1.
The fetal heart frequency instrument that this utility model fetal rhythm rate and fetal rhythm waveform show simultaneously, adopt single-chip microcomputer as the system core, button and colorful display screen can provide good man computer interface, utilize the A/D ALT-CH alternate channel of single-chip microcomputer to gather the heart rate signal of telecommunication, after handling, software digital filter depicts corresponding heartbeat waveform and rod figure, adopt 1.77 cun large scale TFT color screen LCDs, clear, show fetal rhythm rate and fetal rhythm waveform simultaneously intuitively, and can be when heart rate value exceeds normal range shown in red alarm condition, become green again again until recovering the normal cardiac rate value.This utility model has not only improved the professional and reliability of fetal heart frequency instrument, more can adapt to family's instructions for use.
The above; it only is preferred embodiment of the present utility model; be not that this utility model is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in the protection domain of the present utility model.
Claims (3)
1. the fetal heart frequency instrument that shows simultaneously of fetal rhythm rate and fetal rhythm waveform is characterized in that comprising exciting circuit, ultrasonic sensing probe, receiving demodulation circuit, filter amplification circuit, comparator, single-chip microcomputer, display screen and control button, wherein:
The ultrasonic sensing probe is connected with receiving demodulation circuit with exciting circuit respectively;
Receiving demodulation circuit is connected with filter amplification circuit;
Filter amplification circuit is divided two-way output, and one the tunnel is connected directly to the AD ALT-CH alternate channel of single-chip microcomputer, and another road is connected with single-chip microcomputer by comparator;
Display screen and control button all are connected on the single-chip microcomputer.
2. the fetal heart frequency instrument that fetal rhythm rate according to claim 1 and fetal rhythm waveform show simultaneously is characterized in that described display screen is the TFT chromatic liquid crystal screen.
3. the fetal heart frequency instrument that fetal rhythm rate according to claim 1 and 2 and fetal rhythm waveform show simultaneously is characterized in that described filter amplification circuit also is connected with audio power amplifier circuit, and audio power amplifier circuit is connected with speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205003639U CN201743707U (en) | 2010-08-23 | 2010-08-23 | Fetal heart rate instrument capable of displaying both fetal heart rate (FHR) and fetal rhythm wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205003639U CN201743707U (en) | 2010-08-23 | 2010-08-23 | Fetal heart rate instrument capable of displaying both fetal heart rate (FHR) and fetal rhythm wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201743707U true CN201743707U (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205003639U Expired - Lifetime CN201743707U (en) | 2010-08-23 | 2010-08-23 | Fetal heart rate instrument capable of displaying both fetal heart rate (FHR) and fetal rhythm wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201743707U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169501A (en) * | 2011-12-20 | 2013-06-26 | 通用电气公司 | Handheld device for fetal health monitoring and method thereof |
| CN103654857A (en) * | 2013-12-04 | 2014-03-26 | 江南大学 | Fetal heart signal acquisition device |
-
2010
- 2010-08-23 CN CN2010205003639U patent/CN201743707U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169501A (en) * | 2011-12-20 | 2013-06-26 | 通用电气公司 | Handheld device for fetal health monitoring and method thereof |
| CN103654857A (en) * | 2013-12-04 | 2014-03-26 | 江南大学 | Fetal heart signal acquisition device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
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: 066004 Hebei city of Qinhuangdao Province Economic and Technological Development Zone the Yellow River West Road No. 24 Patentee before: Qinhuangdao Contec Medical Systems Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
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| CX01 | Expiry of patent term |