CN104777323A - Chemiluminescence immunity analyzer sample addition needle hole plugging alarm circuit - Google Patents
Chemiluminescence immunity analyzer sample addition needle hole plugging alarm circuit Download PDFInfo
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- CN104777323A CN104777323A CN201510141740.1A CN201510141740A CN104777323A CN 104777323 A CN104777323 A CN 104777323A CN 201510141740 A CN201510141740 A CN 201510141740A CN 104777323 A CN104777323 A CN 104777323A
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- China
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- alarm circuit
- pressure transducer
- conversion chip
- sample needle
- needle
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Abstract
A chemiluminescence immunity analyzer sample addition needle hole plugging alarm circuit comprises a sample addition needle, a pressure sensor and an A/D conversion chip, the pressure sensor is connected with the needle line of the sample addition needle, the pressure sensor acquires the pressure value in the needle line, and the A/D conversion chip converts the pressure value from an analog quantity to a digital quantity, and transmits a subsequent processor for processing data. The circuit can rapidly and effectively detect the state of the sample addition needle to effectively discriminate whether the sample addition needle is blocked or not.
Description
Technical field
The design relates to chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, belongs to technical field of medical instruments.
Background technology
Chemical illumination immunity analysis instrument is in the process used, there is the impurity such as floccus or grumeleuse in the sample occasional drawn due to specimen needle, affect pipeline liquid flow, and due to specimen needle internal diameter less, very easily cause sample needle line clogging, cause application of sample amount inaccurate, have influence on accuracy and the validity of experimental data.Therefore, the state of Real-Time Monitoring sample needle, finds that stifled pin is reported to the police immediately and has very important significance.For this reason, devise the device that a kind of energy is quick, effectively detect specimen needle state, effectively can determine specimen needle and whether block.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, it connects a pressure transducer in the detergent line of specimen needle, when drawing sample and application of sample tells liquid, the pressure change in signal piping is carried out by pressure transducer, by compare normal condition and specimen needle inhale, tell liquid time force value, judge whether sample needle blocks.
For achieving the above object, the design is realized by following technological means:
Chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, comprise sample needle, it is characterized in that: comprise pressure transducer, A/D conversion chip, described pressure transducer is connected with the needle path of sample needle, described pressure transducer gathers the pressure value in needle path, by A/D conversion chip, pressure value is changed into digital quantity from analog quantity, be then transferred to subsequent processor and data are processed.
Further:
Described chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, it is characterized in that: described pressure transducer positive/negative-pressure output port is respectively connected to the input end of analog signal of described A/D conversion chip by a low-pass filter circuit, realize PGA by A/D conversion chip inner low noise instrumentation amplifier structure and amplify.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: described A/D conversion chip is CS1232.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: the enlargement factor of the inner low noise instrumentation amplifier of described A/D conversion chip selects 128 times.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: HoneyWell 26PCCF6G pressure transducer selected by described pressure transducer.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: described pressure transducer is connected with the needle path of sample needle by threeway.
The invention has the beneficial effects as follows: the present invention fast, effectively can detect the device of specimen needle state, effectively can determine specimen needle and whether block.
Accompanying drawing explanation
Fig. 1 is circuit of the present invention composition structural representation.
Embodiment
Below in conjunction with Figure of description, design is further described.
Chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, comprise sample needle, it is characterized in that: comprise pressure transducer P1, A/D conversion chip U1, described pressure transducer P1 is connected with the needle path of sample needle, described pressure transducer P1 gathers the pressure value in needle path, by A/D conversion chip U1, pressure value is changed into digital quantity from analog quantity, be then transferred to subsequent processor and data are processed.
Further:
Described chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, it is characterized in that: described pressure transducer P1 positive/negative-pressure output port is respectively connected to the input end of analog signal of described A/D conversion chip U1 by a low-pass filter circuit, realize PGA by A/D conversion chip inner low noise instrumentation amplifier structure and amplify.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: described A/D conversion chip U1 is CS1232.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: the enlargement factor of the inner low noise instrumentation amplifier of described A/D conversion chip U1 selects 128 times.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: described pressure transducer P1 selects HoneyWell 26PCCF6G pressure transducer.
Described a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, is characterized in that: described pressure transducer P1 is connected with the needle path of sample needle by threeway.
Adopt pressure transducer P1 as main survey instrument, its effect is that the pressure produced in pipeline change is converted to change in voltage.When in pipeline, liquid flow is unimpeded, pressure transducer P1 produces a reference voltage, and when specimen needle pin mouth is plugged, ducted pressure can change, and the pressure that pressure transducer P1 exports also can change.Whether the magnitude of voltage according to change can block by judgement sample pin.The change in voltage produced due to pressure change is less, need to carry out amplification process by follow-up instrumentation amplifier to voltage signal, then the Signal transmissions after amplification is carried out analog to digital conversion to controller, the pressure value recorded, through subsequent processor process, finally can judge whether specimen needle blocks.
Specimen needle touch liquid level start to inhale sample time, the pressure in fluid path pipeline can change, thus produces a saltus step, inhales after sample, and fluid path pipeline force value is recovered, and can produce again a saltus step, thus forms a pressure pulse.The duration of the pressure pulse when specimen needle is drawn onto grumeleuse or floccus is different with the peak value of pulse, therefore inhales pressure change in sample process by monitoring and can judge the blocked state of specimen needle.Detect by pressure transducer the pressure inhaled in sample process to change, the output of pressure transducer is carried out analog to digital conversion through the A/D conversion chip with enlarging function, and processed by subsequent processor, line pressure and empirical value in suction sample process are compared, when whether inhaling sample with judgement sample pin, has been drawn onto foreign matter.
More than show and describe the ultimate principle of the design, principal character and advantage.The technician of the industry should understand; the design is not restricted to the described embodiments; the principle that the design is just described described in above-described embodiment and instructions; under the prerequisite not departing from the design's spirit and scope; the design also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.
Claims (6)
1. chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit, comprise sample needle, it is characterized in that: comprise pressure transducer, A/D conversion chip, described pressure transducer is connected with the needle path of sample needle, described pressure transducer gathers the pressure value in needle path, by A/D conversion chip, pressure value is changed into digital quantity from analog quantity, be then transferred to subsequent processor and data are processed.
2. chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit as claimed in claim 1, it is characterized in that: described pressure transducer positive/negative-pressure output port is respectively connected to the input end of analog signal of described A/D conversion chip by a low-pass filter circuit, realize PGA by A/D conversion chip inner low noise instrumentation amplifier structure and amplify.
3. a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit as claimed in claim 1, is characterized in that: described A/D conversion chip is CS1232.
4. a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit as claimed in claim 1, is characterized in that: the enlargement factor of the inner low noise instrumentation amplifier of described A/D conversion chip selects 128 times.
5. a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit as claimed in claim 1, is characterized in that: HoneyWell 26PCCF6G pressure transducer selected by described pressure transducer.
6. a kind of chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit as claimed in claim 1, is characterized in that: described pressure transducer is connected with the needle path of sample needle by threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141740.1A CN104777323A (en) | 2015-03-30 | 2015-03-30 | Chemiluminescence immunity analyzer sample addition needle hole plugging alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141740.1A CN104777323A (en) | 2015-03-30 | 2015-03-30 | Chemiluminescence immunity analyzer sample addition needle hole plugging alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104777323A true CN104777323A (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510141740.1A Pending CN104777323A (en) | 2015-03-30 | 2015-03-30 | Chemiluminescence immunity analyzer sample addition needle hole plugging alarm circuit |
Country Status (1)
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| CN (1) | CN104777323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019014942A1 (en) * | 2017-07-21 | 2019-01-24 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and sample monitoring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454675A (en) * | 2006-06-02 | 2009-06-10 | 奥林巴斯株式会社 | Sample dispenser |
| JP2012026942A (en) * | 2010-07-27 | 2012-02-09 | Hitachi High-Technologies Corp | Autoanalyzer |
| CN203551579U (en) * | 2013-11-14 | 2014-04-16 | 宋筱亮 | Sampling needle with automatic detection function |
| CN204719063U (en) * | 2015-03-30 | 2015-10-21 | 苏州长光华医生物医学工程有限公司 | Chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit |
-
2015
- 2015-03-30 CN CN201510141740.1A patent/CN104777323A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454675A (en) * | 2006-06-02 | 2009-06-10 | 奥林巴斯株式会社 | Sample dispenser |
| JP2012026942A (en) * | 2010-07-27 | 2012-02-09 | Hitachi High-Technologies Corp | Autoanalyzer |
| CN203551579U (en) * | 2013-11-14 | 2014-04-16 | 宋筱亮 | Sampling needle with automatic detection function |
| CN204719063U (en) * | 2015-03-30 | 2015-10-21 | 苏州长光华医生物医学工程有限公司 | Chemical illumination immunity analysis instrument sample needle hole blockage alarm circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019014942A1 (en) * | 2017-07-21 | 2019-01-24 | 深圳迈瑞生物医疗电子股份有限公司 | Sample analyzer and sample monitoring method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |
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| RJ01 | Rejection of invention patent application after publication |