CN204027651U - Test tube sample size pick-up unit - Google Patents
Test tube sample size pick-up unit Download PDFInfo
- Publication number
- CN204027651U CN204027651U CN201420491444.5U CN201420491444U CN204027651U CN 204027651 U CN204027651 U CN 204027651U CN 201420491444 U CN201420491444 U CN 201420491444U CN 204027651 U CN204027651 U CN 204027651U
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- CN
- China
- Prior art keywords
- sampling needle
- test tube
- liquid level
- level sensor
- master controller
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- 238000005070 sampling Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000000338 in vitro Methods 0.000 description 3
- 210000002700 Urine Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Abstract
The utility model is test tube sample size pick-up unit, comprise master controller, sampling needle, sampling needle fixed mount, hold the test tube of sample and the test tube rack of carrying test tube, master controller connects controls sampling needle fixed mount driving mechanism and test tube rack driving mechanism, when test tube moves on to sampling needle below, the center line of sampling needle overlaps with test tube center line, also has liquid level sensor circuit plate, liquid level sensor circuit plate comprises the capacitance sensing driving circuit connecting successively, analog signal processing circuit and level signal circuit, sampling needle is that conductive material is made, sampling needle upper portion insulating is fixed on sampling needle fixed mount, sampling needle is by the capacitance sensing driving circuit electrical connection of wire and liquid level sensor circuit plate.The signal access master controller of level signal circuit.Whether this device accurately interior sample size of test tubes meets the requirements; Simple in structure, cost is low, easily in existing analytical instrument, installs additional.
Description
Technical field
The utility model relates to and technical field of medical instruments, is specifically related to a kind of test tube sample size pick-up unit.
Background technology
In the automatic analyzer of various liquid, for example, in full automatic urine analyzer, when test, the test tube that sample is housed is transplanted on sampling needle below, the center line of sampling needle overlaps with test tube center line, and instrument control sampling needle moves downward, automatically to invisible spectro specimen sample.Before existing analytical instrument sampling, invisible spectro sample size is not detected, the invisible spectro sample size having does not reach instrument and detects needed minimum sample size (as the 2mL of standard); What even have is in vitro empty, and no specimen.Can still in vitro sample by former operational mode by sampling needle, so because of gained sample size deficiency or no specimen, cause instrument to occur this test tube pattern detection acquired results abnormal.Now but cannot learn that abnormal result is abnormal due to sample itself, or instrument detects mistake, or sample size there is problem.
This class I liquid I automatic analytical instrument need to configure a kind of test tube sample size pick-up unit.
Utility model content
The purpose of this utility model is to provide a kind of test tube sample size pick-up unit, sampling needle electrical connection liquid level sensor circuit plate, when liquid level sensor circuit plate touches sample liquid level in sampling needle bottom, electric capacity changes, can accurately detect the in vitro liquid level of sample, thereby accurately judge whether invisible spectro sample size meets testing requirement.
The test tube sample size pick-up unit of the utility model design, comprise master controller, sampling needle, sampling needle fixed mount, hold the test tube of sample and the test tube rack of carrying test tube, master controller connects controls sampling needle fixed mount driving mechanism and test tube rack driving mechanism, when test tube moves on to sampling needle below, the center line of sampling needle overlaps with test tube center line, the utility model has designed liquid level sensor circuit plate, sampling needle is that conductive material is made, sampling needle upper portion insulating is fixed on sampling needle fixed mount, sampling needle is by wire and the electrical connection of liquid level sensor circuit plate, the signal access master controller of liquid level sensor circuit plate.
Described liquid level sensor circuit plate comprises the capacitance sensing driving circuit, analog signal processing circuit and the level signal circuit that connect successively, sampling needle is by the capacitance sensing driving circuit electrical connection of wire and liquid level sensor circuit plate, and the signal of the level signal circuit of liquid level sensor circuit plate accesses master controller.
Compared with prior art, the advantage of the utility model test tube sample size pick-up unit is: 1, accurately whether the interior sample size of test tubes meets the requirements; 2, simple in structure, cost is low, easily in existing analytical instrument, installs additional, as can be installed easily use additional on full automatic urine analyzer.
Brief description of the drawings
Fig. 1 is the structural representation of this test tube sample size pick-up unit embodiment.
Fig. 2 is this test tube sample size pick-up unit embodiment liquid level tablet circuit structure block diagram.
Fig. 3 is that this test tube sample size pick-up unit embodiment sampling needle bottom peak and liquid level are related to schematic diagram.
Number in the figure: 1, sampling needle, 2, test tube, 3, liquid level.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
This test tube sample size pick-up unit embodiment as shown in Figure 1, comprise master controller, sampling needle 1, sampling needle fixed mount, hold the test tube 2 of sample and the test tube rack of carrying test tube 2, master controller connects controls sampling needle fixed mount driving mechanism and test tube rack driving mechanism, when test tube 2 moves on to sampling needle 1 below, the center line of sampling needle 1 overlaps with test tube 2 center lines.Sampling needle fixed mount, the test tube rack of carrying test tube, sampling needle fixed mount driving mechanism and test tube rack driving mechanism, all identical with existing apparatus structure, in Fig. 1, do not draw.
Liquid level sensor circuit plate as shown in Figure 2, comprises the capacitance sensing driving circuit, analog signal processing circuit and the level signal circuit that connect successively.Sampling needle is that conductive material is made, sampling needle upper portion insulating is fixed on sampling needle fixed mount, sampling needle welding lead, the electric welding of capacitance sensing driving circuit of the wire other end and liquid level sensor circuit plate, the signal access master controller of the level signal circuit of liquid level sensor circuit plate.
As shown in Figure 3, when specimen needle 1 is in initial position, when peak, specimen needle 1 bottom and the distance at 2 ends of test tube are S, and the liquid level 3 when the interior sample size of test tube 2 meets the minimum of test request is highly reference value H.The stroke that specimen needle 1 bottom moves downward contact liquid level 3 is L.In the time that sampling needle 1 bottom touches sample liquid level 3, liquid level sensor circuit plate changes because of electric capacity, send analog voltage signal, analog signal processing circuit carries out filtering and amplification to the analog voltage signal receiving, send into level signal circuit, level signal circuit is sent level signal into master controller again.Master controller is according to the time of receiving level signal, obtain the distance L that now sampling needle moves downward, if L≤S-H, sample size in this test tube 2 meets the requirements, if L > is S-H, the sample size in this test tube 2 is undesirable, master controller is made the underproof mark of sample size to this test tube 2, if the interior no specimen of test tube 2, specimen needle 1 cannot touch liquid level so, equally also makes marks by sample size is defective.
Above-described embodiment, is only the specific case that the purpose of this utility model, technical scheme and beneficial effect are further described, and the utility model is not defined in this.All any amendments of making, be equal to replacement, improvement etc., within being all included in protection domain of the present utility model within scope of disclosure of the present utility model.
Claims (2)
1. test tube sample size pick-up unit, comprise master controller, sampling needle (1), sampling needle fixed mount, hold the test tube of sample and the test tube rack of carrying test tube, master controller connects controls sampling needle fixed mount driving mechanism and test tube rack driving mechanism, when test tube (2) moves on to sampling needle (1) below, the center line of sampling needle (1) overlaps with test tube (2) center line, it is characterized in that:
Also is furnished with liquid level sensor circuit plate, sampling needle (1) is conductive material making, sampling needle (1) upper portion insulating is fixed on sampling needle fixed mount, sampling needle (1) is by wire and the electrical connection of liquid level sensor circuit plate, and the signal of liquid level sensor circuit plate accesses master controller.
2. test tube sample size pick-up unit according to claim 1, is characterized in that:
Described liquid level sensor circuit plate comprises the capacitance sensing driving circuit, analog signal processing circuit and the level signal circuit that connect successively, sampling needle (1) is by the capacitance sensing driving circuit electrical connection of wire and liquid level sensor circuit plate, and the signal of the level signal circuit of liquid level sensor circuit plate accesses master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491444.5U CN204027651U (en) | 2014-08-28 | 2014-08-28 | Test tube sample size pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491444.5U CN204027651U (en) | 2014-08-28 | 2014-08-28 | Test tube sample size pick-up unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204027651U true CN204027651U (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420491444.5U Active CN204027651U (en) | 2014-08-28 | 2014-08-28 | Test tube sample size pick-up unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204027651U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404113A (en) * | 2016-09-14 | 2017-02-15 | 济南海能仪器股份有限公司 | Liquid level tracking device |
| CN107884028A (en) * | 2016-09-30 | 2018-04-06 | 佛山市顺德区美的电热电器制造有限公司 | For cooking apparatus anti-overflow detection means and there is its cooking apparatus |
| CN108152864A (en) * | 2017-12-14 | 2018-06-12 | 深圳市帝迈生物技术有限公司 | The identification equipment of sample tube type and the detection method of sample tube type |
| CN112729988A (en) * | 2020-12-29 | 2021-04-30 | 石家庄正道动物药业有限公司 | Quality detection sampling device for traditional Chinese veterinary medicine dichroine and working method thereof |
-
2014
- 2014-08-28 CN CN201420491444.5U patent/CN204027651U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404113A (en) * | 2016-09-14 | 2017-02-15 | 济南海能仪器股份有限公司 | Liquid level tracking device |
| CN107884028A (en) * | 2016-09-30 | 2018-04-06 | 佛山市顺德区美的电热电器制造有限公司 | For cooking apparatus anti-overflow detection means and there is its cooking apparatus |
| CN107884028B (en) * | 2016-09-30 | 2021-01-19 | 佛山市顺德区美的电热电器制造有限公司 | A cooking utensil that is used for cooking utensil's anti-overflow detection device and has it |
| CN108152864A (en) * | 2017-12-14 | 2018-06-12 | 深圳市帝迈生物技术有限公司 | The identification equipment of sample tube type and the detection method of sample tube type |
| CN112729988A (en) * | 2020-12-29 | 2021-04-30 | 石家庄正道动物药业有限公司 | Quality detection sampling device for traditional Chinese veterinary medicine dichroine and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |