CN209712897U - Calibrating instrument is compared in a kind of inhibition of automated common mode - Google Patents
Calibrating instrument is compared in a kind of inhibition of automated common mode Download PDFInfo
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- CN209712897U CN209712897U CN201920104506.5U CN201920104506U CN209712897U CN 209712897 U CN209712897 U CN 209712897U CN 201920104506 U CN201920104506 U CN 201920104506U CN 209712897 U CN209712897 U CN 209712897U
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- 230000005764 inhibitory process Effects 0.000 title claims abstract description 11
- 230000003750 conditioning effect Effects 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The utility model discloses a kind of inhibition of automated common mode to compare calibrating instrument, it is connect respectively with man-machine interface, power management module, analog-digital converter and digital analog converter including single-chip microcontroller, man-machine interface, power management module, analog-digital converter, digital analog converter, voltage reference module, decaying conversion module, conditioning boost module, polarizing voltage module, lead switching module and output terminal, the single-chip microcontroller.The input terminal of the digital analog converter is connect with voltage reference module, output end is connect with conditioning boost module；The output end of the conditioning boost module is connect with analog-digital converter and lead switching module respectively.The utility model realizes the sine wave of variable frequency using DDS mode, has automatic cycle tests, can adjust automatically export virtual value, automatic cycle switching output lead is automatically added to, removal ± 300mV polarizing voltage.The utility model compact is portable, low power dissipation design, provides continuous 40 hours use time.
Description
Technical field
The utility model relates to a kind of electrocardiogram, the detection technique of cardiac monitoring equipment, especially a kind of automated common mode suppression
System compares calibrating instrument.
Background technique
It is analog electrocardiogram figure machine, Digital ECG machine, dynamic (removable) electrocardiograph, the heart that common-mode rejection ratio, which examines and determine project,
One in electric patient monitor calibrating project, for detecting tested instrument input terminal ability resistant to common code interference.In calibrating, common mode
Inhibit to export 10V real available value sine wave than calibrating instrument.
Domestic existing common-mode rejection ratio calibrating instrument, using Alternating Current Power Supply, volume weight is larger, needs before each calibrating
Manually adjust output amplitude, manual switching exports lead, is manually added and removal ± 300mV polarizing voltage.
Chinese patent CN201120273655.8 discloses a kind of Multifunctional electrocardiograph detecting instrument, its control circuit is
By module occurs for upper computer control module, calibrating signal, lead interface forms, the keyboard of upper computer control module, liquid crystal display
LCD, touch screen, SRAM, Flash module are connect with CPU respectively, the common-mode rejection ratio assay module of calibrating signal generation module,
DAC circuit, channel selection circuit are connected with MCU respectively, and upper computer control module and calibrating signal occur module and pass through RS-232
Interface circuit be connected, calibrating signal occur module MCU by common-mode rejection ratio assay module, channel selection circuit respectively with lead
Connecting port is connected directly by wired mode.The verification process is more succinct, efficient, can examine and determine analog electrocardiogram figure machine, the digital heart
A variety of instruments such as electrograph machine, dynamic ecg, ECG monitor, electroence phalograph, it is powerful.
Existing common-mode rejection ratio calibrating installation is all to refer to International Legal Organization (OIML) R90 international recommendation to do
, common-mode rejection ratio calibrating installation is needed using dual shield shell.Common-mode rejection ratio examines and determine project in national measurement technical method
It is required in rule, is to examine and determine project for the first time, subsequent calibrating does not need to carry out again.Above-mentioned patent is a kind of multi-functional equipment, common mode
Inhibit than calibrating function to be one of them parameter, since system structure requires (dual shield shell), the volume of above-mentioned patent
It can not accomplish with weight portable, common-mode rejection ratio output amplitude can not be adjusted, without automatic detectability.
Utility model content
To solve the above problems existing in the prior art, the utility model to design a kind of output amplitude adjust automatically, from
Dynamic switching output lead is automatically added to and removal ± 300mV polarizing voltage, is powered using battery, and common-mode rejection ratio project is simplified
Calibrating instrument is compared in verification process, the automated common mode inhibition for facilitating scene to carry out calibration operation.
To achieve the goals above, the technical solution of the utility model is as follows: a kind of automated common mode inhibits than calibrating instrument, packet
Include single-chip microcontroller, man-machine interface, power management module, analog-digital converter, digital analog converter, voltage reference module, decaying modulus of conversion
Block, conditioning boost module, polarizing voltage module, lead switching module and output terminal, the single-chip microcontroller respectively with man-machine boundary
Face, power management module, analog-digital converter are connected with digital analog converter；The input terminal and voltage reference of the digital analog converter
Module connection, output end are connect with conditioning boost module；There are two the output ends of the conditioning boost module, and one through decaying
Conversion module is connect with analog-digital converter, another connect with lead switching module；The lead switching module also respectively with
Polarizing voltage module is connected with output terminal；
The man-machine interface includes display screen, function button and buzzer.
Further, the single-chip microcontroller, man-machine interface, power management module, analog-digital converter, digital analog converter, electricity
Press base modules, decaying conversion module, conditioning boost module, polarizing voltage module, lead switching module and output terminal integrated
In a cabinet, the cabinet includes internal layer shield shell and outer shield shell, the face of the internal layer shield shell
Output terminal is set on plate, display screen and function button, the outer layer screen are set on the panel of the outer shield shell
Cover the front side setting port and charge port, right side setting switch key of shell.
Further, the single-chip microcontroller is ATMEGA64A microprocessor.
Further, the digital analog converter includes bis- 12 analog-digital chips of TLV5618.
Further, the analog-digital converter is 18 IIC interface module converter MCP3422.
Further, the lead switching module uses twin coil magnetic latching relay.
Further, the power management module includes 2400mAh lithium battery.
Compared with prior art, the utility model has the following beneficial effects:
1, the utility model realizes the sine wave of variable frequency using DDS mode, has automatic cycle tests, can adjust automatically
Whole output virtual value, automatic cycle switching output lead, is automatically added to, removal ± 300mV polarizing voltage.
2, the utility model compact is portable, low power dissipation design, using large capacity rechargeable lithium battery, provides continuous 40
Hour uses the time.
3, the utility model is applied to major medical institutions (removable with analog electrocardiogram figure machine, Digital ECG machine, dynamic
It is dynamic) electrocardiograph, ECG monitor common-mode rejection ratio calibrating project.The utility model can be applied to medical measurement, carry out to doctor
Mechanism is treated in the calibrating of the common-mode rejection ratio calibrating item with various types of electrocardiograph, patient monitor；The utility model can also be applied to
The instruments such as equipment division of medical institutions maintenance department carries out to our unit in the test and maintenance with electrocardiograph, patient monitor.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of the utility model.
Fig. 2 is the appearance diagram of the utility model.
In figure: 1, internal layer shield shell, 2, outer shield shell, 3, output terminal, 4, display screen, 5, port, 6, fill
Power port, 7, function button, 8, switch key.
Specific embodiment
The utility model is further described through with reference to the accompanying drawing.As shown in Figs. 1-2, a kind of automated common mode inhibits
Than calibrating instrument, including single-chip microcontroller, man-machine interface, power management module, analog-digital converter, digital analog converter, voltage reference module,
Decaying conversion module, conditioning boost module, polarizing voltage module, lead switching module and output terminal 3, the single-chip microcontroller point
It is not connect with man-machine interface, power management module, analog-digital converter and digital analog converter；The input terminal of the digital analog converter
It is connect with voltage reference module, output end is connect with conditioning boost module；There are two the output ends of the conditioning boost module,
One connect through decaying conversion module with analog-digital converter, another connect with lead switching module；The lead switches mould
Block is also connect with polarizing voltage module and output terminal 3 respectively；
The man-machine interface includes display screen 4, function button 7 and buzzer.
Further, the single-chip microcontroller, man-machine interface, power management module, analog-digital converter, digital analog converter, electricity
Press base modules, decaying conversion module, conditioning boost module, polarizing voltage module, lead switching module and output terminal 3 integrated
In a cabinet, the cabinet includes internal layer shield shell 1 and outer shield shell 2, the internal layer shield shell 1
Output terminal 3 is set on panel, display screen 4 and function button 7 are set on the panel of the outer shield shell 2, it is described
Switch key 8 is arranged in the front side setting port 5 and charge port 6 of outer shield shell 2, right side.
Further, the single-chip microcontroller is ATMEGA64A microprocessor.
Further, the digital analog converter includes bis- 12 analog-digital chips of TLV5618.
Further, the analog-digital converter is 18 IIC interface module converter MCP3422.
Further, the lead switching module uses twin coil magnetic latching relay.
Further, the power management module includes 2400mAh lithium battery.
The working principle of the utility model is as follows:
The utility model realizes adjustable frequency sine wave using DDS (direct digital frequency synthesier) mode, and use is a piece of
Bis- 12 analog-digital chips (DAC) of TLV5618, output have the sine wave of direct current biasing amount.Boost module is improved by simulating
Active filter filter and step-up transformer are constituted, and the sine wave of analog-digital chip (DAC) output is by conditioning boosting mould
After block filtering and boosting, load in the silver-mica capacitor load of transformer output end.Conversion module of decaying utilizes high value electricity
Resistance decays to boosting output sine wave, and the sine wave after decaying passes through the RMS conversion chip in decaying conversion module
Conversion, is converted to DC quantity, and analog-digital converter is completed using 18 analog-digital converters (ADC) of IIC interface, integrated reference voltage
Digitlization conversion to decaying conversion module output DC quantity.
Single-chip microcontroller controls man-machine interface (display screen 4, function button 7 and buzzing using ATMEGA64A microprocessor driven
Device), digital analog converter, conditioning boost module and lead switching module, realize power management, while sine waveform tables of data
It is stored in single-chip microcontroller storage.Lead switching module uses twin coil magnetic latching relay.3 structure of output terminal meets the common heart
Electrograph machine lead and medical monitor lead mechanical connection require.
Calibrating instrument is turned by adjusting the structure of digital analog converter output sinusoidal amplitude, fixed load capacitor using modulus
Parallel operation read through overdamping conversion module conditioning boost module boosting after sine wave, realize closed-loop control, can adjust automatically it is defeated
Sinusoidal amplitude out avoids manually adjusting process.Switch different leads using the relay in lead switching module, completes automatic
Cyclic switching output lead is automatically added to and the function of removal ± 300mV polarizing voltage.Also it can according to need the manual mould of selection
Formula is completed to the measurement under the conditions of different leads, different polarizing voltages.
The application method of the utility model is as follows:
The utility model is switched under conditions of closing double layer screen shell, adjust automatically output voltage virtual value, completes
Double layer screen shell is opened after adjustment, the conducting wire of tested electrocardiogram or patient monitor is accessed into corresponding terminal, adjusts tested instrument
Device is to rated condition, closing of housing.Calibrating instrument automatic measurement sequence is opened, according to circumstances switches tested instrument lead and completes to survey
Examination.By interpretation corresponding record waveform, the common-mode rejection ratio performance of tested electrocardiogram, patient monitor is judged.It can also adjust automatically
After whole output voltage virtual value step is played, using manual mode, complete to the measurement under the conditions of different leads, different polarizing voltages.
The utility model is not limited to the present embodiment, any equivalent concepts in the technical scope that the utility model discloses
Or change, it is classified as the protection scope of the utility model.
Claims (7)
1. calibrating instrument is compared in a kind of automated common mode inhibition, it is characterised in that: including single-chip microcontroller, man-machine interface, power management module, mould
Number converter, digital analog converter, voltage reference module, decaying conversion module, conditioning boost module, polarizing voltage module, lead
Switching module and output terminal (3), the single-chip microcontroller respectively with man-machine interface, power management module, analog-digital converter sum number
Mode converter connection；The input terminal of the digital analog converter connect with voltage reference module, output end and conditioning boost module
Connection；There are two the output ends of the conditioning boost module, and one connect through decaying conversion module with analog-digital converter, another
It is a to be connect with lead switching module；The lead switching module is also connect with polarizing voltage module and output terminal (3) respectively；
The man-machine interface includes display screen (4), function button (7) and buzzer.
2. calibrating instrument is compared in a kind of automated common mode inhibition according to claim 1, it is characterised in that: the single-chip microcontroller, people
Machine interface, power management module, analog-digital converter, digital analog converter, voltage reference module, decaying conversion module, conditioning boosting
Module, polarizing voltage module, lead switching module and output terminal (3) are integrated in a cabinet, and the cabinet includes interior
Layer shield shell (1) and outer shield shell (2), setting output terminal (3) on the panel of the internal layer shield shell (1),
Display screen (4) and function button (7), the outer shield shell (2) are set on the panel of the outer shield shell (2)
Front side setting port (5) and charge port (6), right side be arranged switch key (8).
3. calibrating instrument is compared in a kind of automated common mode inhibition according to claim 1, it is characterised in that: the single-chip microcontroller is
ATMEGA64A microprocessor.
4. calibrating instrument is compared in a kind of automated common mode inhibition according to claim 1, it is characterised in that: the digital analog converter
Including bis- 12 analog-digital chips of TLV5618.
5. calibrating instrument is compared in a kind of automated common mode inhibition according to claim 1, it is characterised in that: the analog-digital converter
For 18 IIC interface module converter MCP3422.
6. calibrating instrument is compared in a kind of automated common mode inhibition according to claim 1, it is characterised in that: the lead switches mould
Block uses twin coil magnetic latching relay.
7. calibrating instrument is compared in a kind of automated common mode inhibition according to claim 1, it is characterised in that: the power management mould
Block includes 2400mAh lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920104506.5U CN209712897U (en) | 2019-01-22 | 2019-01-22 | Calibrating instrument is compared in a kind of inhibition of automated common mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920104506.5U CN209712897U (en) | 2019-01-22 | 2019-01-22 | Calibrating instrument is compared in a kind of inhibition of automated common mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209712897U true CN209712897U (en) | 2019-12-03 |
Family
ID=68680784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920104506.5U Active CN209712897U (en) | 2019-01-22 | 2019-01-22 | Calibrating instrument is compared in a kind of inhibition of automated common mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209712897U (en) |
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2019
- 2019-01-22 CN CN201920104506.5U patent/CN209712897U/en active Active
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