CN113406317B - Biochemical analyzer for blood and qi - Google Patents
Biochemical analyzer for blood and qi Download PDFInfo
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- CN113406317B CN113406317B CN202110648575.4A CN202110648575A CN113406317B CN 113406317 B CN113406317 B CN 113406317B CN 202110648575 A CN202110648575 A CN 202110648575A CN 113406317 B CN113406317 B CN 113406317B
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- assembly
- test card
- blood gas
- signal acquisition
- biochemical analyzer
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- 239000008280 blood Substances 0.000 title claims abstract description 40
- 210000004369 blood Anatomy 0.000 title claims abstract description 39
- 238000012360 testing method Methods 0.000 claims abstract description 135
- 239000000523 sample Substances 0.000 claims abstract description 49
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 54
- 239000000919 ceramic Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 description 15
- 238000004891 communication Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
Abstract
The invention provides a blood gas biochemical analyzer, and belongs to the technical field of medical instruments. The blood gas analyzer comprises a blood gas analyzer body and a test card, wherein the test card is matched with the blood gas biochemical analyzer body; the blood gas biochemical analyzer body comprises a shell, a test card base assembly, a signal acquisition assembly, a heat dissipation system assembly, a motion assembly and a main control board; a decorative cover and a main control board are arranged on the shell; the test card base assembly is arranged in the shell, a base is arranged on the test card base assembly, and a test card hand feeling assembly and a card inserting in-place judging assembly are arranged on the base; the signal acquisition assembly is arranged on the test card base assembly, a signal board PCBA is arranged on the signal acquisition assembly, and a probe is welded on the signal board PCBA; the operation assembly is arranged above the signal acquisition assembly; the heat dissipation system assembly is mounted within the housing. The invention can accurately control the temperature, fully protect and shield the signal acquisition and the electric signals related to the signal acquisition, and ensure higher test accuracy.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a blood gas biochemical analyzer.
Background
The blood gas biochemical analyzer is widely applied to accurate and rapid detection in operating rooms, ICU (information and communication unit) and other occasions, and the accuracy of the test is mainly influenced by two boundary conditions of instrument internal temperature and internal signal interference. The similar products on the market at present have two problems, one is that the internal temperature of the instrument is not controlled or is not ideal enough, and the internal temperature of the instrument fluctuates greatly in the test process, so that the accuracy of signal acquisition is affected; the other is that the protection of the signal acquisition module is insufficient, and high-frequency and low-frequency signals inside the machine can directly interfere with the signal acquisition module, so that the accuracy of signal acquisition is affected.
The prior art has at least the following disadvantages:
1. the internal temperature of the instrument is not controlled or is not ideal enough, and the internal temperature fluctuation is large in the test process, so that the accuracy of signal acquisition is affected;
2. the protection to the signal acquisition module is not enough, and the inside high-low frequency signal of machine can directly interfere with it to influence signal acquisition's accuracy.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a blood gas biochemical analyzer, which comprises a blood gas analyzer body and a test card, wherein the test card is matched with the blood gas biochemical analyzer body; the blood gas biochemical analyzer body comprises a shell, a test card base assembly, a signal acquisition assembly, a heat dissipation system assembly, a motion assembly and a main control board; the shell is provided with a main control board, a decorative cover and a display touch screen; the test card base assembly is arranged in the shell and is provided with a test card platform for placing a test card, a base is arranged on the test card base assembly, and a test card hand feeling assembly and a card inserting in-place judging assembly are arranged on the base; the signal acquisition assembly is arranged on the test card base assembly, a signal board PCBA is arranged on the signal acquisition assembly, and a probe is welded on the signal board PCBA; the motion assembly is connected with the test card base assembly and the signal acquisition assembly; a heat dissipation system assembly is mounted within the housing, the heat dissipation system assembly including a fan and a temperature sensor. The invention carries out accurate temperature control to ensure the accuracy of the test, essentially solves the influence of temperature change on signal acquisition, and saves a great deal of labor cost and material cost; the signal acquisition and the electric signals related to the signal acquisition are fully protected and shielded, so that the probability of generating abnormal signals is reduced, and the accuracy of the test is ensured.
The invention provides a blood gas biochemical analyzer, comprising: the blood gas analyzer comprises a blood gas analyzer body and a test card, wherein the test card is matched with the blood gas biochemical analyzer body for use;
the blood gas biochemical analyzer body comprises a shell, a test card base assembly, a signal acquisition assembly, a heat dissipation system assembly, a motion assembly and a main control board;
a main control board is arranged on the shell, and a decorative cover and a display touch screen are also arranged on the shell;
The test card base assembly is arranged in the shell and is provided with a test card platform for placing a test card, a base is arranged on the test card base assembly, and a test card hand feeling assembly and an inserting card in-place judging assembly are arranged on the base;
the signal acquisition assembly is arranged on the test card base assembly, a signal board PCBA is arranged on the signal acquisition assembly, and a probe is welded on the signal board PCBA;
the motion assembly is connected with the test card base assembly and the signal acquisition assembly;
the heat dissipation system assembly is mounted in the housing, and includes a fan and a temperature sensor.
Preferably, the test card base assembly further comprises a rotating arm and a lifting plate, the ball head part of the rotating arm is in sliding contact with the lower surface of the lifting plate, the upper surface of the lifting plate is provided with a protrusion, a first spring is fixed at the protrusion, a bottom heating plate mounting seat is hung at the other end of the first spring, and a bottom ceramic heating plate is attached to the bottom heating plate mounting seat.
Preferably, the protrusion on the lifting plate is a plurality of support columns, each support column is fixed with a first spring, the base on the upper surface of the lifting plate is provided with a hole matched with the support column, and the support columns are inserted into the holes and are restrained by the rotating arms.
Preferably, the rotating arm is rotated anticlockwise to push the lifting plate to move upwards, the lifting plate moves upwards to compress the first spring, the first spring is extruded to push the bottom heating plate mounting seat to move upwards, the bottom ceramic heating plate is attached to the lower surface of the reaction area of the test card, and the lower surface of the test card is heated.
Preferably, the signal acquisition assembly comprises a mounting shell, a sealing plate, a rotating shaft, a left side plate and a right side plate, wherein the signal plate PCBA is fixed on the mounting shell, the sealing plate is fixed on the lower portion of the mounting shell, and the mounting shell and the sealing plate jointly play a role in sealing and shielding the signal plate PCBA.
Preferably, the two sides of the installation shell are sleeved on the rotating shafts, the rotating shafts are respectively embedded on the left side plate and the right side plate, and the rotating arms are connected with the signal acquisition assembly.
Preferably, the signal acquisition assembly is provided with a probe support assembly, the probe support assembly comprises a probe support, a guide shaft, a second spring, a top heating plate mounting seat and a top ceramic heating plate, the probe is arranged in the probe support, the probe support is provided with a through hole, the through hole of the probe support is penetrated by the guide shaft, the guide shaft is sleeved with the second spring, the lower part of the second spring is fixedly provided with the top heating plate mounting seat, and the top heating plate mounting seat is attached with the top ceramic heating plate.
Preferably, the mounting shell is rotated clockwise to drive the signal board PCBA to rotate, the probe support fixed on the signal board PCBA compresses the second spring, the second spring is extruded to push the top heating plate mounting seat to move downwards, the top ceramic heating plate is attached to the upper surface of the reaction area of the test card, and the upper surface of the reaction area of the test card is heated.
Preferably, the motion assembly comprises a rotary stepping motor, a mounting frame, a coupler, a pinion shaft, a cam, a pinion and a large gear, wherein the rotary stepping motor is connected with the coupler, the coupler is connected with the pinion shaft and the cam shaft, the pinion shaft is connected with the cam shaft, and the cam shaft is connected with the signal acquisition assembly through the cam.
Preferably, the rotating arm and the mounting shell are electrically connected with a rotating stepping motor, the rotating stepping motor is fixed on the mounting frame, a coupler is fixed on the rotating stepping motor, a pinion shaft and a cam shaft are fixed on the coupler, a pinion is fixed on the pinion shaft and meshed with a large gear, the large gear is fixed on the cam shaft, a cam is further fixed on the cam shaft, and the cam is connected with the signal acquisition assembly.
Preferably, the rotary stepper motor rotates clockwise to drive the coupler fixedly connected with the rotary stepper motor to rotate, the coupler drives the pinion shaft fixedly connected with the coupler to rotate, the pinion shaft drives the pinion fixedly connected with the pinion shaft to rotate, the pinion drives the large gear meshed with the pinion shaft to rotate, the large gear drives the cam fixedly connected with the large gear to rotate, the cam drives the cam fixedly connected with the cam to rotate, the cam rotates to press down the signal acquisition assembly to perform signal acquisition, processing and analysis and heating of the upper surface of the test card, and the signal acquisition assembly simultaneously presses down the rotating arm to perform heating of the lower surface of the test card.
Preferably, a lower back cover is arranged below the back of the shell, a fan is arranged on the lower back cover, a heat dissipation hole is further formed in the lower back cover, and the center line of the decorative cover is in a straight line with the center line of the test card base assembly, the axis line of the fan and the center line of the heat dissipation hole of the lower back cover.
Preferably, the plurality of temperature sensors are respectively arranged on the test card base assembly, at the air inlet of the fan and at the opening on the right side of the shell.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention is provided with three temperature sensors, the purpose of the three temperature sensors is to control the temperature of the test card platform accurately, the temperature of the test card platform is controlled by comparing the temperatures of the three temperature sensors and dynamically adjusting the rotating speed of the fan, the influence of temperature change on signal acquisition is essentially solved, and a large amount of labor cost and material cost are saved.
(2) In the testing process, the upper and lower heating plates respectively heat the upper and lower surfaces of the test card at the same time, so that the influence of the temperature difference of the test card on signal acquisition is avoided.
(3) The invention can fully protect and shield the signal collection and the electric signal related to the signal collection, reduce the probability of generating abnormal signals and ensure the accuracy of the test.
Drawings
Fig. 1 is a perspective view, in half section, of a housing assembly according to one embodiment of the present invention.
Fig. 2 is a perspective view of a housing of one embodiment of the present invention.
FIG. 3 is a perspective view of a test card base assembly according to one embodiment of the invention.
FIG. 4 is a cross-sectional view of a test card base assembly according to one embodiment of the invention.
Fig. 5 is a perspective view of a signal acquisition assembly of one embodiment of the present invention.
Fig. 6 is a perspective view of a probe holder assembly according to one embodiment of the invention.
Fig. 7 is a perspective view of a heat dissipating system assembly according to one embodiment of the present invention.
FIG. 8 is a schematic diagram of a test card feel assembly installation of one embodiment of the present invention, wherein the solid lines are test card feel assemblies.
Fig. 9 is a perspective view of a card in place determination assembly according to an embodiment of the present invention.
Fig. 10 is a perspective view of a motion assembly according to one embodiment of the present invention.
FIG. 11 is a schematic diagram of the direction of airflow according to an embodiment of the invention.
Fig. 12 is a schematic view showing the initial state of the upper and lower heating plates according to an embodiment of the present invention.
Fig. 13 is a schematic view showing the positions of the upper and lower heating plates in the operating state according to an embodiment of the present invention.
Fig. 14 is a schematic view of a signal board PCBA shielding of an embodiment of the present invention.
FIG. 15 is a schematic diagram of a temperature sensor layout according to an embodiment of the present invention.
FIG. 16 is an enlarged view of a portion B of FIG. 15;
fig. 17 is a partial enlarged view of the portion C of fig. 15;
Fig. 18 is a partial enlarged view of the portion D of fig. 15;
FIG. 19 is a schematic diagram showing a signal board PCBA in communication with a motherboard for power supply in accordance with one embodiment of the present invention;
FIG. 20 is an enlarged view of a portion A of FIG. 19;
FIG. 21 is a schematic diagram of a test card according to one embodiment of the invention.
Fig. 22 is a perspective view of an embodiment of the present invention.
Fig. 23 is a schematic view showing a state of the liquid after the liquid pressing bag according to an embodiment of the present invention.
FIG. 24 is a schematic view showing a state of a liquid after the air bag is pressed according to an embodiment of the present invention
In the drawing the view of the figure, 1-blood gas biochemical analyzer body, 11-housing, 12-test card base assembly, 13-signal acquisition assembly, 14-heat dissipation system assembly, 15-movement assembly, 16-main control panel, 17-display touch screen, 111-decorative cover, 112-upper cover, 113-base, 114-C-shaped cover, 121-base assembly, 122-motor support assembly, 123-rotating arm, 124-lifting plate, 125-first spring, 126-bottom heating plate mounting seat, 127-bottom ceramic heating plate, 131-signal plate PCBA, 132-probe, 133-mounting shell, 134-sealing plate, 135-rotating shaft, 136-left side plate, 137-right side plate, 138-probe support assembly, 141-lower back cover, 142-fan 143-first temperature sensor, 144-second temperature sensor, 145-third temperature sensor, 151-mounting bracket, 152-coupler, 153-pinion shaft, 154-cam shaft, 155-pinion gear, 156-large gear, 157-cam, 158-rotating stepper motor, 161-main control board power supply port, 162-main control board communication port, 1111-air intake, 1211-test card hand feeling component, 1212-card in place judging component, 1221-liquid package motor, 1222-liquid package pressure head, 1223-air bag motor, 1224-air bag pressure head, 1311-power supply line, 1312-communication line, 1313-signal board PCBA power supply interface, 1314-signal board PCBA communication interface, 1381-probe support, 1382-guide shaft, 1383-a second spring, 1384-a top heater plate mount, 1385-a top ceramic heater plate, 1411-a heat sink;
2-test card, 21-external sample, 22-balloon, 23-PAD, 24-liquid pack, 25-reaction zone, 26-in-channel electrode.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings.
The invention provides a blood gas biochemical analyzer, comprising: the blood gas analyzer comprises a blood gas analyzer body 1 and a test card 2, wherein the test card 2 is matched with the blood gas biochemical analyzer body 1 for use;
the blood gas biochemical analyzer body 1 comprises a shell 11, a test card base assembly 12, a signal acquisition assembly 13, a heat dissipation system assembly 14, a motion assembly 15 and a main control board 16;
A main control board 16 is arranged on the shell 11, and a decorative cover 111 and a display touch screen 17 are also arranged on the shell 11;
The test card base assembly 12 is installed in the shell 11, the test card base assembly 12 is provided with a test card platform for placing a test card, the test card base assembly 12 is provided with a base assembly 121, and the base assembly 121 is provided with a test card hand feeling assembly 1211 and a card inserting in-place judging assembly 1212;
the signal acquisition assembly 13 is arranged on the test card base assembly 12, a signal board PCBA 131 is arranged on the signal acquisition assembly 13, and a probe 132 is welded on the signal board PCBA 131;
the motion assembly 15 is connected with the test card base assembly 12 and the signal acquisition assembly 13;
The heat dissipation system assembly 14 is mounted within the housing 11, and the heat dissipation system assembly 14 includes a fan 142 and a temperature sensor 143.
As a preferred embodiment, the test card base assembly 12 further includes a rotating arm 123 and a lifting plate 124, where a ball portion of the rotating arm 123 is in sliding contact with a lower surface of the lifting plate 124, a protrusion is provided on an upper surface of the lifting plate 124, a first spring 125 is fixed at the protrusion, a bottom heating plate mounting seat 126 is suspended at the other end of the first spring 125, and a bottom ceramic heating plate 127 is attached to the bottom heating plate mounting seat 126.
As a preferred embodiment, the protrusions on the lifting plate 124 are a plurality of support columns, each support column is fixed with a first spring 125, the base of the upper surface of the lifting plate 124 is provided with a hole matched with the support column, and the support columns are inserted into the holes and restrained by the rotating arms 123.
As a preferred embodiment, the rotating arm 123 rotates anticlockwise, pushes the lifting plate 124 to move upwards, the lifting plate 124 moves upwards, compresses the first spring 125, the first spring 125 is extruded, pushes the bottom heating plate mounting seat 126 to move upwards, and attaches the bottom ceramic heating plate 127 to the lower surface of the reaction area 25 of the test card 2, so as to heat the lower surface of the reaction area 25 of the test card 2.
As a preferred embodiment, the signal acquisition assembly 13 includes a mounting shell 133, a sealing plate 134, a rotating shaft 135, a left side plate 136 and a right side plate 137, the signal board PCBA131 is fixed on the mounting shell 133, the sealing plate 134 is fixed on the lower portion of the mounting shell 133, and the mounting shell 133 and the sealing plate 134 together seal and shield the signal board PCBA 131.
As a preferred embodiment, the two sides of the mounting shell 133 are sleeved on the rotating shaft 135, the rotating shaft 135 is respectively embedded on the left side plate 136 and the right side plate 137, and the rotating arm 123 is connected with the signal acquisition assembly 13.
As a preferred embodiment, the signal acquisition component 13 is provided with a probe support component 138, the probe support component 138 includes a probe support 1381, a guide shaft 1382, a second spring 1383, a top heating plate mounting seat 1384 and a top ceramic heating plate 1385, the probe 132 is installed in the probe support 1381, the probe support 1381 is provided with a through hole, the through hole of the probe support 1381 is penetrated by the guide shaft 1382, the guide shaft 1382 is sleeved with the second spring 1383, the lower part of the second spring 1383 is fixed with the top heating plate mounting seat 1384, and the top heating plate mounting seat 1384 is attached with the top ceramic heating plate 1385.
As a preferred embodiment, the mounting case 133 performs a clockwise rotation motion, drives the signal board PCBA131 to perform a rotation motion, the probe support 1381 fixed on the signal board PCBA131 compresses the second spring 1383, the second spring 1383 is pressed to push the top heating plate mounting seat 1384 to move downwards, and the top ceramic heating plate 1385 is attached to the upper surface of the reaction area 25 of the test card 2, so as to heat the upper surface of the reaction area 25 of the test card.
As a preferred embodiment, motion assembly 15 includes a rotary stepper motor 158, a mounting bracket 151, a coupler 152, a pinion shaft 153, a cam shaft 154, a cam 157, a pinion 155, and a large gear 156, rotary stepper motor 158 is coupled to coupler 152, coupler 152 is coupled to pinion shaft 153 and cam shaft 154, pinion shaft 153 is coupled to cam shaft 154, and cam shaft 154 is coupled to signal acquisition assembly 13 via cam 157.
As a preferred embodiment, the rotating arm 123 and the mounting case 133 are electrically connected to a rotating stepper motor 158, the rotating stepper motor 158 is fixed on the mounting frame 151, a coupling 152 is fixed on the rotating stepper motor 158, a pinion shaft 153 and a cam shaft 154 are fixed on the coupling 152, a pinion 155 is fixed on the pinion shaft 153, the pinion 155 is meshed with a large gear 156, the large gear 156 is fixed on the cam shaft 154, a cam 157 is also fixed on the cam shaft 154, and the cam 157 is connected to the signal acquisition assembly 13.
As a preferred embodiment, the rotating stepper motor 158 rotates clockwise to drive the coupler 152 fixedly connected with the rotating stepper motor to rotate, the coupler 152 drives the pinion shaft 153 fixedly connected with the coupler to rotate, the pinion shaft 153 drives the pinion 155 fixedly connected with the pinion shaft to rotate, the pinion 155 drives the large gear 156 meshed with the pinion shaft to rotate, the large gear 156 drives the cam 154 fixedly connected with the large gear 156 to rotate, the cam 154 drives the cam 157 fixedly connected with the cam 157 to rotate, the cam 157 rotates to press down the signal acquisition assembly 13 to perform signal acquisition, process and analysis and test card upper surface heating, and the signal acquisition assembly 13 simultaneously presses down the rotating arm 123 to perform test card lower surface heating.
The working state of the motor is as follows: obtaining a first signal, and performing clockwise rotation to finish the action; then a second signal is obtained, and the motor stops rotating, but in the working state, a holding moment exists; finally, three signals are obtained, the motor rotates anticlockwise, and the motor stops after being reset to the initial position.
The rotary stepper motor 158 provides a power source which, through a series of transmissions, is ultimately transferred to the mounting housing 133 causing the mounting housing 133 to rotate from an initial inclination to the horizontal plane to a parallel rotation to the horizontal plane.
The sealing plate 134 is fixed to the mounting case 133, and when the mounting case 133 rotates, the sealing plate 134 rotates, and the rotating arm 123 is pushed down, so that the rotating arm 123 rotates. The movement of the mounting case 133 and the rotation arm 123 is synchronized, and the mounting case 133 plays a role of transmitting power to the rotation arm 123.
As a preferred embodiment, a lower back cover 141 is disposed below the back of the housing 11, a fan 142 is mounted on the lower back cover 141, the lower back cover 141 is further provided with a heat dissipation hole 1411, and the center line of the decorative cover 11 is aligned with the center line of the test card base assembly 12, the axis line of the fan 142, and the center line of the heat dissipation hole 1411 of the lower back cover 141.
As a preferred embodiment, the plurality of temperature sensors, namely, the first temperature sensor 143, the second temperature sensor 144 and the third temperature sensor 145, are respectively disposed on the test card base assembly 12, at the air inlet 1111 of the fan and at the opening on the right side of the housing.
The first temperature sensor 143 in the test card base assembly area is for testing the temperature of the card platform in real time, and during the test, the test card is operated on the test stand, and the temperature fluctuation in the area directly affects the quality of the test data.
The second temperature sensor 144 at the air inlet 1111 detects the temperature at the fan air inlet 1111 in real time, where the temperature is responsive to the overall temperature rise within the machine.
The third temperature sensor 145 at the opening on the right side of the housing is to detect the external ambient temperature in real time, which serves as a reference.
The system collects the values of the three temperature sensors, analyzes and processes the data, and controls the rotating speed of the fan 142 by adjusting PWM, so that the temperature inside the shell 11 can be kept in dynamic balance, and the accuracy of the test is ensured.
According to one embodiment of the invention, the decorative cover 111 is fixed on the shell 11 through interference fit between the protruding column on the back and the hole on the shell 11, the decorative cover 111 serves as an air inlet 1111 of the heat dissipation system component, external air can flow into the inside of the shell 11 of the blood gas biochemical analyzer through the air inlet 1111 on the decorative cover 111, the lower back cover 180 is provided with the cooling fan 142 and is provided with a plurality of long-waist-round heat dissipation holes 1411, after the air in the shell 11 of the blood gas biochemical analyzer is extracted by the fan 142, the air is discharged out of the shell 11 through the long-waist-round heat dissipation holes 181, the exchange of internal and external air is completed, the other parts of the shell 11 except the air inlet 1111 are completely closed, the uniqueness of the air inlet 1111 is ensured, and the fluctuation of temperature caused by the turbulence of air flow is avoided, thereby affecting the accuracy of the test.
According to a specific embodiment of the present invention, structurally, the center line of the decorative cover 11 is in a straight line with the center line of the test card base assembly 12, the center line of the fan 142, and the center line of the heat dissipation hole 1411 of the lower back cover 141, so that the shortest air duct and the lowest wind resistance are ensured, the heat in the machine can be effectively taken away timely, and the internal temperature rise is prevented from acting on the components of the signal board PCBA 131 in a conductive and radiative mode, thereby affecting the accuracy of the test.
According to one embodiment of the invention, the periphery of the signal board PCBA 131 is covered by the mounting shell 133, and the bottom of the signal board PCBA 131 is sealed by the sealing plate 134, so that the signal board PCBA 131 can be completely sealed, and only the probes 132 at the head and the 2 sockets at the tail can leak out, so that even if air convection exists in the shell 11, the air convection does not act on the components of the signal board PCBA 131, thereby affecting the accuracy of the test.
According to one embodiment of the present invention, during the test, the reaction area 25 of the test card 2 is tightly adhered by the top ceramic heating plate 1385 and the bottom ceramic heating plate 127, when the external sample 21 flows through the reaction area 25, the top ceramic heating plate 1385 and the bottom ceramic heating plate 127 heat the reaction area together, so that the temperature of the external sample 21 can be instantaneously raised to be consistent with the temperature in the shell 11, and in order to prevent the temperature from being too high, the top ceramic heating plate 1385 and the bottom ceramic heating plate 127 are respectively provided with thermocouples for real-time temperature detection, and the temperature stability is realized through a PID algorithm, thereby ensuring the accuracy of the test.
The test card 2 is initially placed in an external environment, the temperature of which is consistent with the temperature of the external environment; after the test card 2 is inserted into the test card platform, heat is generated during normal operation of various components in the machine, the heat can cause temperature rise in the machine, the test card 2 and the test card platform can form a temperature difference, the existence of the temperature difference can influence the test precision, and the upper surface and the lower surface of the test card are heated dynamically and rapidly by the upper heating plate and the lower heating plate, so that the temperature of the test card platform and the temperature of the test card platform can be balanced dynamically in a very short time.
In the prior art, a large amount of test data is used for algorithmically compensating to compensate the influence of internal temperature rise and the temperature difference between the test card and the test card platform on the test precision. The invention can automatically and intelligently control the temperature accurately to ensure the test precision, and can save a great deal of manpower and material cost.
The signal plate PCBA 131 is covered by the installation shell 133 all around, the bottom of the signal plate PCBA 131 is sealed by the sealing plate 134, so that the signal plate PCBA 131 can be completely sealed, only a plurality of probes 132 at the head part and 2 jacks at the tail part are leaked, the installation shell 133 and the sealing plate 134 are made of aluminum alloy materials, external interference signals can be well absorbed and reflected, the fact that the external interference signals cannot influence the internal signal plate PCBA 131 is ensured, meanwhile, the gaps at the opening are smaller than 4mm, the external signals are all low-frequency signals and are insufficient to penetrate through the narrow gaps, and the accuracy of testing can be ensured due to good electromagnetic shielding.
The signal acquisition is low-frequency weak current signals, the signal acquisition is millivolt and nanoampere level, and the interference can directly influence the test result. The invention fully protects and shields the signal acquisition and the electric signal related to the signal acquisition, avoids the possibility of generating abnormal signals, and improves the accuracy of the test.
According to a specific embodiment of the invention, in structural design, the signal board PCBA 131 communication interface 1314 is arranged at the tail end, and the main control board communication port 162 is arranged at the head, so that the signal board PCBA 131 communication interface 1314 is connected with the main control board communication port 162 end to end, the straight line distance between the signal board PCBA 131 communication interface 1314 and the main control board communication port 162 is only 40mm, the line length of a communication line 1312 connecting the two interfaces is only 70mm, and a shielding function is added during design of the communication line 1312, thereby ensuring the reliability of the path transmitted to the main control board 16 after signal acquisition, and further ensuring the accuracy of testing.
According to a specific embodiment of the invention, in structural design, the main control board power supply port 161 and the main control board communication port 162 are arranged in parallel, and the signal board PCBA power supply interface 1313 is connected with the main control board power supply port 161 through a power supply line 1311.
Working principle:
Before the test is performed, the test card 2 is removed and an external sample 21 (the sample is usually referred to as blood of a human body) is added from the sample addition port.
After the test card 2 is inserted into the test card platform, the front side wall of the test card 2 presses the tact switch on the card insertion position judging component 1212 into the slot of the tact switch, so that an electric signal is triggered, and the system judges that the test card 2 is inserted and can detect.
Clicking on the "test button" on the display touch screen 17, the system will start the detection process:
(1) The rotating stepper motor 158 starts to work, and through a series of actions of the movement mechanism, the probe 132 moves downwards to be in contact with the PAD23 on the test card 2, so that an electric signal on the test card 2 can be transmitted to the probe 132 through the PAD23 on the test card 2, and then transmitted to the system through the probe 132 for analysis, and a final test result is obtained.
(2) After the probe 132 is in contact with the PAD23 on the test card 2, the system will send a command to drive the liquid pack motor 1221 to move downwards, the liquid pack head 1222 fixedly connected to the liquid pack motor 1221 is pressed downwards and extrudes the liquid pack, the standard liquid in the liquid pack 24 (the standard liquid is used for testing a reference value) flows out, and the signals flowing through the electrodes 26 in each channel are transmitted to the probe 132 from the PAD23, and then transmitted to the system for data analysis.
(3) After the system receives a sufficient signal generated by the standard solution, the air bag motor 1223 is driven to move downwards, and an air bag pressure head 1224 fixedly connected to the air bag motor 1223 is pressed downwards to press the air bag 22; the air bag 22 deforms, the gas in the air bag 22 pushes the sample to flow, and the sample can push away the original standard liquid after flowing through the channel to occupy the original position of the standard liquid; at this time, a new signal is generated on the electrode, and the signal is also transmitted to the probe 132 by the PAD, and then transmitted to the system for data analysis (the signal generated by the standard solution is a reference value, and the signal generated at this time is compared with the reference value to calculate the content of the element in the sample
(4) After analysis, all the motion mechanisms are reset.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. A blood gas biochemical analyzer, comprising:
The blood gas analyzer comprises a blood gas analyzer body and a test card, wherein the test card is matched with the blood gas biochemical analyzer body for use;
the blood gas biochemical analyzer body comprises a shell, a test card base assembly, a signal acquisition assembly, a heat dissipation system assembly, a motion assembly and a main control board;
a main control board is arranged on the shell;
The test card base assembly is arranged in the shell and is provided with a test card platform for placing a test card, a base is arranged on the test card base assembly, and a test card hand feeling assembly and an inserting card in-place judging assembly are arranged on the base; the test card base assembly further comprises a rotating arm and a lifting plate, wherein the spherical head part of the rotating arm is in sliding contact with the lower surface of the lifting plate, a bottom heating plate mounting seat is arranged above the lifting plate, a bottom ceramic heating plate is attached to the bottom heating plate mounting seat, and the bottom ceramic heating plate is used for heating the bottom of the test card;
the signal acquisition assembly is arranged on the test card base assembly, a signal board PCBA is arranged on the signal acquisition assembly, and a probe is welded on the signal board PCBA;
the motion assembly is connected with the test card base assembly and the signal acquisition assembly;
the heat dissipation system assembly is mounted in the housing, and includes a fan and a temperature sensor.
2. The blood gas biochemical analyzer according to claim 1, wherein the lifting plate has a protrusion on an upper surface thereof, a first spring is fixed at the protrusion, and a bottom heating plate mounting seat is hung at the other end of the first spring.
3. The blood gas biochemical analyzer of claim 2, wherein the protrusions on the lifting plate are a plurality of support columns, each support column is fixed with a first spring, the base on the upper surface of the lifting plate is provided with a hole matched with the support column, and the support columns are inserted into the holes and restrained by the rotating arms.
4. The blood gas biochemical analyzer of claim 2, wherein the signal collection assembly comprises a mounting shell, a sealing plate, a rotating shaft, a left side plate and a right side plate, the signal plate PCBA is fixed on the mounting shell, the sealing plate is fixed at the lower part of the mounting shell, and the mounting shell and the sealing plate jointly seal and shield the signal plate PCBA.
5. The blood gas biochemical analyzer of claim 4, wherein two sides of the mounting case are sleeved on a rotating shaft, the rotating shaft is respectively embedded on a left side plate and a right side plate, and the rotating arm is connected with the signal acquisition assembly.
6. The biochemical analyzer of blood gas according to claim 4, wherein the signal acquisition component is provided with a probe support component, the probe support component comprises a probe support, a guide shaft, a second spring, a top heating plate mounting seat and a top ceramic heating plate, the probe is arranged in the probe support, the probe support is provided with a through hole, the through hole of the probe support is penetrated by the guide shaft, the guide shaft is sleeved with the second spring, the lower part of the second spring is fixedly provided with the top heating plate mounting seat, the top heating plate mounting seat is attached with the top ceramic heating plate, and the top ceramic heating plate is used for heating the top of the test card.
7. The biochemical analyzer of claim 4, wherein the motion assembly comprises a rotary stepper motor, a mounting frame, a coupler, a pinion shaft, a cam, a pinion and a large gear, the rotary stepper motor is connected to the coupler, the coupler is connected to the pinion shaft and the cam shaft, the pinion shaft is connected to the cam shaft, and the cam shaft is connected to the signal acquisition assembly through the cam.
8. The blood gas biochemical analyzer of claim 7, wherein the rotary arm and the mounting housing are electrically connected to a rotary stepper motor, the rotary stepper motor is fixed to a mounting frame, a coupler is fixed to the rotary stepper motor, a pinion shaft and a cam shaft are fixed to the coupler, a pinion is fixed to the pinion shaft, the pinion is meshed with a pinion, the pinion is fixed to the cam shaft, a cam is further fixed to the cam shaft, and the cam is connected to the signal acquisition assembly.
9. The blood gas biochemical analyzer according to claim 1, wherein a lower rear cover is provided below the back of the housing, a fan is mounted on the lower rear cover, a heat dissipation hole is further provided on the lower rear cover, a decorative cover is further provided on the housing, and a center line of the decorative cover is aligned with a center line of the test card base assembly, a center line of the fan, and a center line of the heat dissipation hole of the lower rear cover.
10. The blood gas biochemical analyzer of claim 1, wherein the plurality of temperature sensors are respectively disposed on the test card base assembly, at an air inlet of the fan, and at an opening on the right side of the housing.
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| CN114152658B (en) * | 2021-11-30 | 2024-02-09 | 成都斯马特科技有限公司 | Blood gas detection method |
| CN114199948B (en) * | 2021-12-13 | 2023-09-22 | 南京晶捷生物科技有限公司 | Electronic quality control card of dry biochemical analyzer and electronic quality control method thereof |
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