CN217365887U - Modular electrocardio acquisition equipment based on serial interface communication - Google Patents
Modular electrocardio acquisition equipment based on serial interface communication Download PDFInfo
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- CN217365887U CN217365887U CN202220630375.6U CN202220630375U CN217365887U CN 217365887 U CN217365887 U CN 217365887U CN 202220630375 U CN202220630375 U CN 202220630375U CN 217365887 U CN217365887 U CN 217365887U
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- 238000002955 isolation Methods 0.000 claims abstract description 80
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 239000000523 sample Substances 0.000 claims abstract description 22
- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The utility model discloses a modular ECG acquisition equipment based on serial interface communication, which comprises an interface, a level conversion circuit, a programmable logic device, an isolation IO, an acquisition circuit, a probe, a DC power supply and an isolation power supply; the interface is respectively connected with the input end of the level conversion circuit and the input end of the DC power supply; the output end of the level conversion circuit is respectively connected with the input end of the programmable logic device and the isolation IO, the output end of the programmable logic device is connected with the isolation IO, and the isolation IO is sequentially connected with the acquisition circuit and the probe; the DC power supply is respectively connected with the interface, the level conversion circuit, the programmable logic device, the acquisition circuit and the probe and is used for supplying power; an isolation power supply is also arranged between the DC power supply and the isolation IO and acquisition circuit; the modular electrocardio-acquisition equipment of the utility model has small volume and is convenient to be integrated into a large-scale system; the electrocardio acquisition is realized through the serial port, and the requirements of stream disk recording and the like can be better supported.
Description
Technical Field
The utility model belongs to the field of medical equipment, concretely relates to modular electrocardio collection equipment based on serial interface communication.
Background
The electrocardio acquisition is a simple and effective means for acquiring the heart state, and related equipment is widely applied to the fields of medical treatment, old age, scientific research and the like.
The common electrocardio acquisition equipment has two forms of desk type and portable recording type. Wherein, the desk-top instrument comprises a display screen, an entity operation panel and other components, and is commonly used in the fields of operation, electric diagnosis measurement, monitoring and the like; the portable recording type generally only has a small module which can carry data to be recorded, and the data can be taken out only by matching with a computer, so that the portable recording type is commonly used for acquiring long-time dynamic electrocardiogram data.
As an important means for monitoring the vital signs of patients, the patient can be matched with an electrocardio acquisition device in various anesthesia examination, operation and intensive care scenes; electrocardiographic waveforms of a subject are also often acquired and recorded in related scientific studies. In these scenes, desktop electrocardio acquisition equipment is frequently used at present, but the equipment is large in size and inflexible to use, and cannot achieve the optimal use effect in many cases.
SUMMERY OF THE UTILITY MODEL
In order to overcome the electrocardio collection equipment that exists among the prior art bulky, use inflexible scheduling problem, the utility model provides a modular electrocardio collection equipment based on serial interface communication has advantages such as small, easily integrated, function flexibility.
In order to achieve the above design objective, the utility model discloses a following technical scheme realizes:
a modular electrocardio acquisition device based on serial interface communication comprises an interface 1, a level conversion circuit 2, a programmable logic device 3, an isolation IO4, an acquisition circuit 5, a probe 6, a DC power supply 7 and an isolation power supply 8;
the interface 1 is respectively connected with an input end of a level conversion circuit 2 and an input end of a DC power supply 7, the interface 1 is used for inputting power supplies and realizing signal transmission, and the level conversion circuit 2 is used for converting an external RS232 level serial port into a circuit of 3.3V single-ended level;
the output end of the level conversion circuit 2 is respectively connected with the input end of the programmable logic device 3 and the isolation IO4, the output end of the programmable logic device 3 is connected with the isolation IO4, and the isolation IO4 is sequentially connected with the acquisition circuit 5 and the probe 6; the isolation IO4 is used for realizing communication digital signals between the programmable logic device 3 and the acquisition circuit 5 under the condition of circuit isolation; the probe 6 is used for connecting the subject with the acquisition circuit 5;
the DC power supply 7 is respectively connected with the interface 1, the level conversion circuit 2, the programmable logic device 3, the acquisition circuit 5 and the probe 6 and used for supplying power;
an isolation power supply 8 is also arranged between the DC power supply 7 and the isolation IO4 and between the DC power supply and the acquisition circuit 5; the isolation power supply 8 is used for supplying power to the isolation IO4 and the acquisition circuit 5 under the condition of electrical isolation.
Further, the signal terminal of the interface 1 is connected to the input terminal of the level shift circuit 2, and the power supply terminal is connected to the input terminal of the programmable logic device 3.
Further, the interface 1 is a screw terminal with pins more than 5 pins, a DB type interface or an RJ45 interface, and is used for supplying power to the electrocardiograph acquisition device and realizing communication between the electrocardiograph acquisition device and the outside.
Further, the programmable logic device 3 is an FPGA or a CPLD device, and is used for realizing serial communication and controlling the acquisition circuit 5.
Further, the acquisition circuit 5 is an analog-to-digital converter with a resolution of 18-24bit and is used for acquiring electrocardiosignals and digitizing the electrocardiosignals.
Further, the DC power supply 7 is a DC voltage regulator device for converting an input power into a power required by the level conversion circuit 2, the programmable logic device 3, and the isolation IO4, and is one or more LDO or switching regulator.
Compared with the prior art, the utility model discloses specifically as follows advantage:
1. the modular electrocardio-acquisition equipment of the utility model has small volume and is convenient to be integrated into a large-scale system;
2. the electrocardio acquisition is realized through the serial port, and the requirements of stream disk recording and the like can be better supported;
3. the display screen, the computer and other resources can be shared with other instrument systems, and the space and the cost are saved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is an electrical schematic diagram of a modular ecg collecting apparatus based on serial interface communication according to the present invention;
in the figure: the device comprises an interface 1, a level conversion circuit 2, a programmable logic device 3, an isolation IO4, an acquisition circuit 5, a probe 6, a DC power supply 7 and an isolation power supply 8.
Detailed Description
The following embodiments are only used for illustrating the technical solutions of the present invention more clearly, and therefore, the following embodiments are only used as examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
For clear and complete description of the technical solution and the specific working process of the present invention, the following embodiments are provided in conjunction with the accompanying drawings of the specification:
example 1
As shown in fig. 1, the present embodiment provides a modular electrocardiograph acquisition device based on serial interface communication, which includes an interface 1, a level conversion circuit 2, a programmable logic device 3, an isolation IO4, an acquisition circuit 5, a probe 6, a DC power supply 7, and an isolation power supply 8;
the interface 1 is respectively connected with an input end of a level conversion circuit 2 and an input end of a DC power supply 7, the interface 1 is used for inputting power supplies and realizing signal transmission, and the level conversion circuit 2 is used for converting an external RS232 level serial port into a circuit of 3.3V single-ended level;
the output end of the level conversion circuit 2 is respectively connected with the input end of the programmable logic device 3 and the isolation IO4, the output end of the programmable logic device 3 is connected with the isolation IO4, and the isolation IO4 is sequentially connected with the acquisition circuit 5 and the probe 6; the isolation IO4 is used for realizing communication digital signals between the programmable logic device 3 and the acquisition circuit 5 under the condition of circuit isolation; the probe 6 is used for connecting the subject with the acquisition circuit 5;
the DC power supply 7 is respectively connected with the interface 1, the level conversion circuit 2, the programmable logic device 3, the acquisition circuit 5 and the probe 6 and used for supplying power;
an isolation power supply 8 is also arranged between the DC power supply 7 and the isolation IO4 and between the DC power supply and the acquisition circuit 5; the isolation power supply 8 is used for supplying power to the isolation IO4 and the acquisition circuit 5 under the condition of electrical isolation.
The interface 1 is a physical electrical interface and has the specification of a DB9 interface. The function of the device is to supply power to the electrocardio acquisition equipment and realize the communication between the electrocardio acquisition equipment and the outside.
The level conversion circuit 2 is a circuit for converting an RS232 level into a 3.3V single-ended level, and is composed of a MAX32 3232A chip and a peripheral circuit thereof, and is used for converting an external RS232 level serial port and an internal 3.3V single-ended level into each other.
The programmable logic device 3 is a device for realizing logic control programming, has the model of XC7K160TFFG676, and has the functions of realizing serial port communication and controlling the acquisition circuit 5.
The isolation IO4 is a device for realizing digital signal transmission under the condition of circuit isolation, and is composed of integrated circuit devices of types ISO7761-Q1 and related peripheral circuits. The function of which is to enable communication between the acquisition circuit 5 and the programmable logic device 3 in front of it, with electrical isolation.
The acquisition circuit 5 is a circuit capable of acquiring electrocardiosignals and comprises 2 ADAS1000 integrated circuit devices and necessary peripheral circuits. The function is to realize the sampling and digitization of the real electrocardiosignals.
The probe 6 is a cable for connecting the subject to the acquisition circuit 5, and is an electrocardiographic lead set including 6 electrodes.
The DC power supply 7 is a DC stabilized voltage power supply device for converting an input power supply into a power supply required by the level conversion circuit 2, the programmable logic device 3 and the isolation IO4, and is a three-way power supply circuit consisting of one LM317 and two LMs 2596. Its function is to power level shifter circuit 2, programmable logic device 3, and isolation IO 4.
The isolation power supply 8 is a circuit for realizing power supply transmission and voltage-stabilizing output under the condition of electrical isolation, and is a circuit consisting of ISOW7841 integrated circuits and necessary peripheral circuits thereof. Its function is to supply power to the isolation IO4, the acquisition circuit 5 with electrical isolation.
Further, the signal terminal of the interface 1 is connected to the input terminal of the level shift circuit 2, and the power supply terminal is connected to the input terminal of the programmable logic device 3.
Further, the output of the DC power supply 7 is connected to the non-isolated sides of the level shift circuit 2, the programmable logic device 3, and the isolation IO4, respectively.
Further, the method is carried out. The output of the isolation power supply 8 is connected to the isolation side of the isolation IO4 and the acquisition circuit 5, respectively.
Example 2
As shown in fig. 1, the present embodiment provides a modular electrocardiograph acquisition device based on serial interface communication, which includes an interface 1, a level conversion circuit 2, a programmable logic device 3, an isolation IO4, an acquisition circuit 5, a probe 6, a DC power supply 7, and an isolation power supply 8;
the interface 1 is respectively connected with an input end of a level conversion circuit 2 and an input end of a DC power supply 7, the interface 1 is used for inputting power supplies and realizing signal transmission, and the level conversion circuit 2 is used for converting an external RS232 level serial port into a circuit of 3.3V single-ended level;
the output end of the level conversion circuit 2 is respectively connected with the input end of the programmable logic device 3 and the isolation IO4, the output end of the programmable logic device 3 is connected with the isolation IO4, and the isolation IO4 is sequentially connected with the acquisition circuit 5 and the probe 6; the isolation IO4 is used for realizing communication digital signals between the programmable logic device 3 and the acquisition circuit 5 under the condition of circuit isolation; the probe 6 is used for connecting the subject with the acquisition circuit 5;
the DC power supply 7 is respectively connected with the interface 1, the level conversion circuit 2, the programmable logic device 3, the acquisition circuit 5 and the probe 6 and used for supplying power;
an isolation power supply 8 is also arranged between the DC power supply 7 and the isolation IO4 and between the DC power supply and the acquisition circuit 5; the isolation power supply 8 is used for supplying power to the isolation IO4 and the acquisition circuit 5 under the condition of electrical isolation.
The interface 1 is a physical electrical interface and has the specification of a DB9 interface. The function of the device is to supply power to the electrocardio acquisition equipment and realize the communication between the electrocardio acquisition equipment and the outside.
The level conversion circuit 2 is a circuit for converting an RS232 level into a 3.3V single-ended level, and is composed of a MAX3232A chip and peripheral circuits thereof. The function of the device is to convert an external RS232 level serial port and an internal 3.3V single-ended level into each other.
The programmable logic device 3 is a device for realizing logic control programming, and has a model number of XCZU2 CG. The function is to realize serial communication and control the acquisition circuit 5.
The isolation IO4 is a device for realizing digital signal transmission under the condition of circuit isolation, and is composed of integrated circuit devices of types ISO7761-Q1 and related peripheral circuits. The function of which is to enable communication between the acquisition circuit 5 and the programmable logic device 3 in front of it, with electrical isolation.
The acquisition circuit 5 is a circuit capable of acquiring an electrocardiosignal, and is composed of 1 ADAS1000 integrated circuit device and necessary peripheral circuits. The function is to realize the sampling and digitization of the real electrocardiosignals.
The probe 6 is a cable for connecting the subject to the acquisition circuit 5, and is an electrocardiographic lead wire set including 4 electrodes.
The DC power supply 7 is a DC stabilized voltage power supply device for converting an input power supply into a power supply required by the level conversion circuit 2, the programmable logic device 3 and the isolation IO4, and is a three-way power supply circuit consisting of one LM317 and two LMs 2596. Its function is to power level shifter circuit 2, programmable logic device 3, and isolation IO 4.
The isolation power supply 8 is a circuit for realizing power supply transmission and voltage-stabilizing output under the condition of electrical isolation, and is a circuit consisting of ISOW7841 integrated circuits and necessary peripheral circuits thereof. Its function is to supply power to the isolation IO4, the acquisition circuit 5 with electrical isolation.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (6)
1. A modular electrocardio acquisition device based on serial interface communication is characterized by comprising an interface (1), a level conversion circuit (2), a programmable logic device (3), an isolation IO (4), an acquisition circuit (5), a probe (6), a DC power supply (7) and an isolation power supply (8);
the interface (1) is respectively connected with the input end of the level conversion circuit (2) and the input end of the DC power supply (7), the interface (1) is used for inputting power supplies and realizing signal transmission, and the level conversion circuit (2) is used for converting an external RS232 level serial port into a circuit of 3.3V single-ended level;
the output end of the level conversion circuit (2) is respectively connected with the input end of the programmable logic device (3) and the isolation IO (4), the output end of the programmable logic device (3) is connected with the isolation IO (4), and the isolation IO (4) is sequentially connected with the acquisition circuit (5) and the probe (6); the isolation IO (4) is used for realizing communication digital signals between the programmable logic device (3) and the acquisition circuit (5) under the condition of circuit isolation; the probe (6) is used for connecting a subject with the acquisition circuit (5);
the DC power supply (7) is respectively connected with the interface (1), the level conversion circuit (2), the programmable logic device (3), the acquisition circuit (5) and the probe (6) and is used for supplying power;
an isolation power supply (8) is arranged between the DC power supply (7) and the isolation IO (4) and between the DC power supply and the acquisition circuit (5); the isolation power supply (8) is used for supplying power to the isolation IO (4) and the acquisition circuit (5) under the condition of electrical isolation.
2. The modular ECG collection device based on serial interface communication of claim 1, wherein the signal terminal of the interface (1) is connected to the input terminal of the level shifter circuit (2), and the power supply terminal is connected to the input terminal of the programmable logic device (3).
3. The modular ECG collection device based on serial interface communication as claimed in claim 1, wherein the interface (1) is a screw terminal with more than 5 pins, a DB-type interface or an RJ45 interface, and is used for supplying power to the ECG collection device and realizing communication between the ECG collection device and the outside.
4. The modular ECG collection device based on serial interface communication of claim 1, wherein the programmable logic device (3) is an FPGA or CPLD device for implementing serial communication and controlling the collection circuit (5).
5. The modular ECG collection device according to claim 1, wherein the collection circuit (5) is an 18-24bit resolution ADC for collecting ECG signals and digitizing.
6. The modular ECG collection device according to claim 1, wherein the DC power supply (7) is a DC voltage regulator for converting an input power into a power required by the level conversion circuit (2), the programmable logic device (3) and the isolated IO (4), and is one or more LDOs or switching regulators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220630375.6U CN217365887U (en) | 2022-03-22 | 2022-03-22 | Modular electrocardio acquisition equipment based on serial interface communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220630375.6U CN217365887U (en) | 2022-03-22 | 2022-03-22 | Modular electrocardio acquisition equipment based on serial interface communication |
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| CN217365887U true CN217365887U (en) | 2022-09-06 |
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| CN202220630375.6U Expired - Fee Related CN217365887U (en) | 2022-03-22 | 2022-03-22 | Modular electrocardio acquisition equipment based on serial interface communication |
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Granted publication date: 20220906 |