CN217450221U - Micro-fluidic device of portable detection equipment - Google Patents
Micro-fluidic device of portable detection equipment Download PDFInfo
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- CN217450221U CN217450221U CN202221194052.3U CN202221194052U CN217450221U CN 217450221 U CN217450221 U CN 217450221U CN 202221194052 U CN202221194052 U CN 202221194052U CN 217450221 U CN217450221 U CN 217450221U
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Abstract
The utility model relates to a micro-fluidic device of portable check out test set, include: the temperature control module is connected with the microprocessor and is used for heating a reaction cavity to a preset reaction temperature; the spectrum sensor is connected with the microprocessor and is used for collecting the spectrum data in the reaction cavity after the LAMP reaction is finished; the utility model discloses a micro-fluidic device of portable check out test set has realized the automation of micro-fluidic chip flow control very easily through piezoelectric pump propelling movement module to through set up the pipeline between the output of piezoelectric pump and reaction chamber, realized that the piezoelectric pump uses gas to be the medium with the reaction sample propelling movement in with reaction chamber extremely the detection chamber adopts gas propelling movement, non-staining equipment, and the piezoelectric pump can used repeatedly promptly, greatly reduced the cost.
Description
Technical Field
The utility model belongs to the technical field of the fluidic control and drive of micro-fluidic chip, concretely relates to portable check out test set's micro-fluidic control device.
Background
At present, the existing control and drive schemes of the microfluidic chip fluid have pressure drive and control, electroosmosis drive and control, electrofluid force drive and control, surface tension drive and control, thermal drive and control, and centrifugal force drive and control. The injection pump and the peristaltic pump are common, the cost is low, the implementation is easy, but the size is large, the power consumption is large, and the cost performance is low on portable equipment; electroosmosis and current drive control systems are complex, high in cost and difficult to realize; and other methods also have the defects of high cost, difficult realization and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable check out test set's micro-fluidic device that realizes and with low costs more easily.
In order to solve the technical problem, the utility model provides a micro-fluidic device of portable check out test set, include: a microprocessor;
the reaction cavity and the detection cavity are positioned on the microfluidic chip;
the piezoelectric pump pushing module is connected with the microprocessor and comprises a piezoelectric pump and a piezoelectric pump driving submodule, and the output end of the piezoelectric pump is connected with the reaction cavity through a pipeline; and
after the reaction in the reaction cavity is completed, the microprocessor is suitable for driving the piezoelectric pump to start through the piezoelectric pump driving sub-module, and pushing the reaction sample in the reaction cavity to the detection cavity by taking air in the pipeline as a medium.
Further, the microfluidic device of the portable detection apparatus further includes: and the temperature control module is connected with the microprocessor and is used for heating the reaction cavity to a preset reaction temperature.
Further, the microfluidic device of the portable detection apparatus further includes: the temperature measuring cavity is positioned on the micro-fluidic chip;
the temperature control module includes: a heating element and a temperature sensor; wherein
The microprocessor is suitable for driving the heating element to heat the parallel and adjacently arranged reaction cavity and temperature measuring cavity through a driving circuit according to the preset reaction temperature; and
the temperature sensor is suitable for collecting the temperature of the temperature measuring cavity and sending collected temperature data to the microprocessor.
Further, the heating element is a ceramic heating plate.
Further, the temperature sensor adopts a PT100 temperature sensor.
Further, the microfluidic device of the portable detection apparatus further includes: and the detection module is connected with the microprocessor and is used for detecting the reaction sample in the detection cavity.
The beneficial effects of the utility model are that, the utility model discloses a portable check out test set's micro-fluidic control device has realized the automation of micro-fluidic chip flow control very easily through piezoelectric pump propelling movement module to through set up the pipeline between the output of piezoelectric pump and reaction chamber, realized that the piezoelectric pump uses gas to be the reaction sample propelling movement in the medium will react the cavity extremely the check out chamber adopts gas propelling movement, non-staining equipment, piezoelectric pump can used repeatedly, greatly reduced the cost.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic block diagram of a microfluidic device of a portable detection apparatus of the present invention;
fig. 2 is a schematic diagram of the position relationship of the micro-fluidic device of the portable detection apparatus of the present invention;
fig. 3 is a schematic diagram of the position relationship of the temperature control module of the micro-fluidic device of the portable detection apparatus of the present invention.
Wherein:
a duct 10.
Detailed Description
The structure of the present invention will now be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 3, the present embodiment 1 provides a microfluidic device of a portable detection apparatus, including: a microprocessor; the reaction cavity and the detection cavity are positioned on the microfluidic chip; the piezoelectric pump pushing module is connected with the microprocessor and comprises a piezoelectric pump and a piezoelectric pump driving submodule; the output end of the piezoelectric pump is connected with the reaction cavity through a pipeline 10; after the reaction in the reaction cavity is completed, the microprocessor is suitable for driving the piezoelectric pump to start through the piezoelectric pump driving sub-module, and pushing the reaction sample in the reaction cavity to the detection cavity by taking air in the pipeline 10 as a medium.
Specifically, the microprocessor is, for example, but not limited to, an STM32 series single chip microcomputer.
Specifically, the piezoelectric pump is, for example but not limited to, an mp6 micro piezoelectric pump of BARTELS in germany, and the piezoelectric pump has the advantages of low power consumption, small size, simplicity in operation, long service life and the like; the piezoelectric pump driver sub-module, such as but not limited to mp6-OEM type controller from BARTELS, germany, is modular in design, small in size, low in power consumption, and simple to control. The input signal of the control interface is amplitude control and pulse control, and the output interface outputs 50V-250V alternating voltage for high voltage to drive the piezoelectric pump.
Amplitude control: the microprocessor can control and adjust the high-voltage output of the piezoelectric pump within 50V-250V to drive the piezoelectric pump by controlling the output voltage of the DAC within 100mV-1000mV so as to realize the power control of the piezoelectric pump; pulse control: the microprocessor realizes the working times of the piezoelectric pump through a pulse clock signal, the piezoelectric pump pumps liquid once in each pulse period, namely, the piezoelectric pump driving submodule adopts a pulse control method to realize the accurate control of the flow, and the accurate control can be realized without a flow sensor.
Specifically, in this embodiment 1, the automation of the flow control of the microfluidic chip is realized through the piezoelectric pump pushing module, and the pipeline 10 is arranged between the output end of the piezoelectric pump and the reaction cavity, so that the piezoelectric pump uses gas as a medium to push the reaction sample in the reaction cavity to the detection cavity, and the gas pushing is adopted, so that the device is not polluted, that is, the piezoelectric pump can be reused.
Furthermore, the micro-fluidic device of the portable detection device further comprises a temperature control module connected with the microprocessor and used for heating the reaction cavity to a preset reaction temperature.
Specifically, in this embodiment 1, the temperature control module is used to heat the reaction cavity, so that the reaction sample reacts at a preset temperature, and after the reaction is completed, the piezoelectric pump is driven to start by the piezoelectric pump driving sub-module, and the air in the pipeline 10 is used as a medium to push the reaction sample in the reaction cavity to the detection cavity.
Further, the microfluidic device of the portable detection apparatus further includes: the temperature measuring cavity is positioned on the microfluidic chip and is arranged in parallel with the reaction cavity; the temperature control module includes: a heating element and a temperature sensor; the microprocessor is suitable for driving the heating element to heat the reaction cavity and the temperature measuring cavity through a driving circuit according to the preset reaction temperature; and the temperature sensor is suitable for collecting the temperature of the temperature measuring cavity and sending the collected temperature data to the microprocessor.
Such as, but not limited to, ceramic heating plates.
Such as, but not limited to, a PT100 temperature sensor.
Specifically, the temperature sensor is positioned on the temperature measuring cavity to collect the temperature of the temperature measuring cavity; the microprocessor is suitable for analyzing and processing the temperature data, and adjusting the heating temperature of the heating element in time according to the analyzed and processed temperature data to realize constant temperature control of the reaction cavity and the temperature measuring cavity; the reaction cavity and the temperature measuring cavity are arranged in parallel and adjacent to each other, so that the temperature of the reaction cavity can be obtained by measuring the temperature of the temperature measuring cavity; the reaction cavity and the temperature measuring cavity are parallel and adjacent to each other, so that the problem that the temperature of the reaction cavity cannot be obtained due to the fact that the reaction cavity cannot be provided with a temperature sensor is solved.
Further, the microfluidic device of the portable detection apparatus further includes: and the detection module is connected with the microprocessor and is used for detecting the reaction sample in the detection cavity.
In particular, the detection module is, for example, but not limited to, an electrochemical sensor.
The working principle of the micro-fluidic device of the portable detection equipment is as follows: and heating the sample to be reacted in the reaction cavity and keeping the sample for a certain time, driving the piezoelectric pump to push the reaction sample in the reaction cavity to the detection cavity by the microprocessor through the piezoelectric pump driving submodule after the heating reaction is finished, and then controlling the detection module to detect the sample and feed back the result by the microprocessor.
In summary, the micro-fluidic device of the portable detection device easily realizes the automation of the flow control of the micro-fluidic chip through the piezoelectric pump pushing module, and the pipeline 10 is arranged between the output end of the piezoelectric pump and the reaction cavity, so that the piezoelectric pump uses gas as a medium to push the reaction sample in the reaction cavity to the detection cavity, the gas pushing is adopted, the device is not polluted, namely, the piezoelectric pump can be repeatedly used, and the cost is greatly reduced.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A microfluidic device of a portable detection apparatus, comprising:
a microprocessor;
the reaction cavity and the detection cavity are positioned on the microfluidic chip;
the piezoelectric pump pushing module is connected with the microprocessor and comprises a piezoelectric pump and a piezoelectric pump driving submodule, and the output end of the piezoelectric pump is connected with the reaction cavity through a pipeline; and
after the reaction in the reaction cavity is completed, the microprocessor is suitable for driving the piezoelectric pump to start through the piezoelectric pump driving sub-module, and pushing the reaction sample in the reaction cavity to the detection cavity by taking air in the pipeline as a medium.
2. The micro-fluidic device of the portable detection apparatus of claim 1,
the microfluidic device of the portable detection apparatus further includes: and the temperature control module is connected with the microprocessor and is used for heating the reaction cavity to a preset reaction temperature.
3. The micro-fluidic device of the portable detection apparatus of claim 2,
the microfluidic device of the portable detection apparatus further includes: the temperature measuring cavity is positioned on the micro-fluidic chip;
the temperature control module includes: a heating element and a temperature sensor; wherein
The microprocessor is suitable for driving the heating element to heat the parallel and adjacently arranged reaction cavity and temperature measuring cavity through a driving circuit according to the preset reaction temperature; and
the temperature sensor is suitable for collecting the temperature of the temperature measuring cavity and sending collected temperature data to the microprocessor.
4. The micro-fluidic device of the portable detection apparatus of claim 3,
the heating element is a ceramic heating plate.
5. The micro-fluidic device of the portable detection apparatus of claim 3,
the temperature sensor adopts a PT100 temperature sensor.
6. The micro-fluidic device of the portable detection apparatus of claim 1,
the microfluidic device of the portable detection apparatus further includes:
and the detection module is connected with the microprocessor and is used for detecting the reaction sample in the detection cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221194052.3U CN217450221U (en) | 2022-05-17 | 2022-05-17 | Micro-fluidic device of portable detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221194052.3U CN217450221U (en) | 2022-05-17 | 2022-05-17 | Micro-fluidic device of portable detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217450221U true CN217450221U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221194052.3U Active CN217450221U (en) | 2022-05-17 | 2022-05-17 | Micro-fluidic device of portable detection equipment |
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| Country | Link |
|---|---|
| CN (1) | CN217450221U (en) |
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2022
- 2022-05-17 CN CN202221194052.3U patent/CN217450221U/en active Active
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