CN201034915Y - Gem hole direct current voltage testing apparatus in blood corpuscle calculating instrument - Google Patents
Gem hole direct current voltage testing apparatus in blood corpuscle calculating instrument Download PDFInfo
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- CN201034915Y CN201034915Y CNU200720093652XU CN200720093652U CN201034915Y CN 201034915 Y CN201034915 Y CN 201034915Y CN U200720093652X U CNU200720093652X U CN U200720093652XU CN 200720093652 U CN200720093652 U CN 200720093652U CN 201034915 Y CN201034915 Y CN 201034915Y
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Abstract
The utility model relates to a dc voltage detecting device for the jewel-hole in a blood-cell counter, belonging to the medical instrument technology field. An impedance matching circuit is connected with an amplifying circuit, the amplifying circuit is connected with a voltage division and voltage following circuit, the voltage division and voltage following circuit is connected with an analog to digital conversion circuit, the analog to digital conversion circuit is connected with a CPU, the CPU is connected with a display. The utility model has the advantages that the utility model has a novel structure, the voltage and the keyhole blocking condition collected can be displayed through the CPU and by detecting the voltage of a platinum electrode. The utility model can realize real-time monitoring on the dc voltage and the blocking condition of the keyhole to judge whether the current result is an abnormity caused by the blocking of the keyhole, thus the utility model can increase the reliability of test results.
Description
Technical field
The utility model belongs to the Medical Instruments technical field, relates in particular to the voltage check device in blood counting instrument.
Background technology
Blood counting instrument has become routine clinical inspection machine at present in the medical Instrument field widespread use.Electrical impedance method is generally adopted in blood count in the blood counting instrument, is also referred to as Coulter principle.Inserting with the cell liquid of diluted in the sample cup, insert in the conversion equipment.Conversion equipment is the Cytometric important ingredient of electrical impedance method, and its inboard has been full of dilution, and an interior electrode is arranged is platinum electrode, and an external electrode is arranged in the cell suspension of the outside.Between detection period, the electrode in both sides, jewel hole produces stable electric current.Dilution is by intrinsic aperture on the tube wall of jewel hole, and general diameter is not more than 100 μ m, to the aperture internal flow.Have conductive liquid because hole wall has been full of, its electronic impulse is stable.If supplying electric current I and impedance Z are stable, the voltage E that regularly restrains by aperture according to ohm also is constant (E=IZ).When the aperture, because the conduction property of cell is lower than dilution, the resistance in circuit in the aperture induction zone increases as a cell, causes change in voltage and produces a pulse signal.The amplitude of change in voltage depends on that the cell of non-conduction occupies the volume of aperture induction zone, and promptly cell volume is big more, and the pulse-response amplitude of generation is high more.Pulse signals is handled accordingly, draws the size of cell count result and cell volume.When haemocyte passes through aperture, can cause little hole plug, cause count results and volume size unusual.Though blood counting instrument has the method that detects little hole plug, all be prompting after measurement is finished, the reviewer can't understand the state that aperture is in the current test process.
Summary of the invention
The utility model provides jewel hole dc voltage detecting device in a kind of blood counting instrument, can not monitor the blocked state of aperture in real time and can not judge that current result is whether because whether accurately that little hole plug causes is unusual, the result of check problem to solve the reviewer.The technical scheme that the utility model is taked is: impedance matching circuit is connected with amplifying circuit, this amplifying circuit is connected with voltage follower circuit with dividing potential drop, this dividing potential drop is connected with analog to digital conversion circuit with voltage follower circuit, this analog to digital conversion circuit is connected with central processing unit, and this central processing unit is connected with display.
The course of work is: the platinum electrode DC voltage is by impedance matching circuit and amplifying circuit, Control of Voltage when aperture is stopped up fully is below 6V, through dividing potential drop and voltage follower circuit, by analog to digital conversion circuit, central processing unit is gathered voltage signal and numerical value is shown current voltage and state by display.
Advantage of the present utility model is novel structure, by detecting the voltage of platinum electrode, by CPU voltage and the aperture blocked state of gathering is shown.Can monitor the DC voltage of aperture in real time, monitor the blocked state of aperture in real time, judge that current result whether because that the aperture plug-hole causes is unusual, can increase the reliability of assay.
Description of drawings
Fig. 1 is the utility model schematic block circuit diagram.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Referring to Fig. 1, impedance matching circuit is connected with amplifying circuit, and this amplifying circuit is connected with voltage follower circuit with dividing potential drop, and this dividing potential drop is connected with analog to digital conversion circuit with voltage follower circuit, this analog to digital conversion circuit is connected with central processing unit, and this central processing unit is connected with display.
Referring to Fig. 2, if aperture does not stop up, the platinum electrode DC voltage is constant substantially, and when aperture generation plug-hole, resistance increases, and the platinum electrode DC voltage raises.By resistance R 1, resistance R 2, voltage stabilizing diode D1, Control of Voltage when aperture is stopped up fully is in the Zener voltage of voltage stabilizing diode, pass through amplifying circuit, this amplifying circuit comprises amplifier U1, resistance R 3, resistance R 4, resistance R 5, resistance R 6, the output of U1 is controlled at below the 6V, and VEE, resistance R 3, resistance R 5 provide bias voltage for amplifying circuit; By amplifier U2 in resistance R 7, resistance R 8 and the voltage follower circuit in the bleeder circuit, voltage signal is sent into A/D convertor circuit again, gather the signal of AD and demonstrate current voltage by CPU.
Claims (1)
1. jewel hole dc voltage detecting device in the blood counting instrument, it is characterized in that: impedance matching circuit is connected with amplifying circuit, this amplifying circuit is connected with voltage follower circuit with dividing potential drop, this dividing potential drop is connected with analog to digital conversion circuit with voltage follower circuit, this analog to digital conversion circuit is connected with central processing unit, and this central processing unit is connected with display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720093652XU CN201034915Y (en) | 2007-04-29 | 2007-04-29 | Gem hole direct current voltage testing apparatus in blood corpuscle calculating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720093652XU CN201034915Y (en) | 2007-04-29 | 2007-04-29 | Gem hole direct current voltage testing apparatus in blood corpuscle calculating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201034915Y true CN201034915Y (en) | 2008-03-12 |
Family
ID=39195805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720093652XU Expired - Fee Related CN201034915Y (en) | 2007-04-29 | 2007-04-29 | Gem hole direct current voltage testing apparatus in blood corpuscle calculating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201034915Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10641697B2 (en) | 2015-04-02 | 2020-05-05 | Horiba Abx Sas | Device for counting particles |
| CN111122841A (en) * | 2018-10-31 | 2020-05-08 | 深圳市帝迈生物技术有限公司 | Method for improving sample result accuracy and sample analyzer |
| CN111855977A (en) * | 2019-04-30 | 2020-10-30 | 深圳市帝迈生物技术有限公司 | Blood analysis system, cleansing liquid calculation device, and cleansing liquid calculation method |
| CN112683949A (en) * | 2020-11-30 | 2021-04-20 | 深圳市科曼医疗设备有限公司 | Method and system for detecting blockage of jewel hole and storage medium |
-
2007
- 2007-04-29 CN CNU200720093652XU patent/CN201034915Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10641697B2 (en) | 2015-04-02 | 2020-05-05 | Horiba Abx Sas | Device for counting particles |
| CN111122841A (en) * | 2018-10-31 | 2020-05-08 | 深圳市帝迈生物技术有限公司 | Method for improving sample result accuracy and sample analyzer |
| CN111855977A (en) * | 2019-04-30 | 2020-10-30 | 深圳市帝迈生物技术有限公司 | Blood analysis system, cleansing liquid calculation device, and cleansing liquid calculation method |
| CN111855977B (en) * | 2019-04-30 | 2021-12-14 | 深圳市帝迈生物技术有限公司 | Blood analysis system, cleansing liquid calculation device, and cleansing liquid calculation method |
| CN112683949A (en) * | 2020-11-30 | 2021-04-20 | 深圳市科曼医疗设备有限公司 | Method and system for detecting blockage of jewel hole and storage medium |
| CN112683949B (en) * | 2020-11-30 | 2023-09-19 | 深圳市科曼医疗设备有限公司 | Gem hole blocking detection method, system and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGCHUN DIRUI MEDICAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: DIRUI INDUSTRY CO., LTD., CHANGCHUN |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 130012, 95 Yunhe street, Jilin, Changchun Patentee after: Changchun Dirui Medical Technology Co., Ltd. Address before: 130012, 95 Yunhe street, Jilin, Changchun Patentee before: Dirui Industry Co., Ltd., Changchun |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |