CN111076922A - Method for judging working state of electromagnetic valve based on pressure detection - Google Patents
Method for judging working state of electromagnetic valve based on pressure detection Download PDFInfo
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Abstract
The invention relates to the technical field of blood detection, in particular to a method for judging the working state of an electromagnetic valve based on pressure detection.
Description
Technical Field
The invention relates to the technical field of blood detection, in particular to a method for judging the working state of an electromagnetic valve based on pressure detection.
Background
The hemorheology instrument is a clinical blood detecting instrument developed on the basis of hemorheology theory, and is a special detecting instrument for early diagnosis of diseases by detecting the blood viscosity of human bodies. The occurrence of many diseases in clinic is closely related to the change of blood characteristics, so that the etiology and pathogenesis of the diseases are discussed from the viewpoint of hemorheology, and a new diagnosis method and prevention and treatment measures are proposed, thereby having extremely important significance for the prevention and treatment of the diseases. Therefore, the hemorheology detection becomes an important detection means for cardiovascular and cerebrovascular diseases and a necessary project for middle-aged and elderly physical examination, and is widely adopted in large and medium-sized hospitals in various places. Devices for the detection of hemorheology currently include cone bowl and electronic-pressure sensing test devices, electronic-pressure sensing rheometers, which measure blood viscosity mainly by the capillary method. In a specific test process, blood is placed in a closed cavity for measurement, the measurement is carried out by controlling the change of the flowing pressure of the blood in a pipeline through a pump and an electromagnetic valve, the blood flows in a flexible pipeline, the electromagnetic valve is arranged outside the flexible pipeline to control the closing of the flexible pipeline, specifically, the electromagnetic valve is folded and compressed to close the flexible pipeline, the electromagnetic valve is loosened to restore the flexible pipeline to an open state through restoring force, the flexible pipeline is plugged into the electromagnetic valve and is flexible, the flexible pipeline can shake in the blood flowing process, the flexible pipeline can be partially or completely separated from the electromagnetic valve after a long time, the electromagnetic valve can not accurately control the opening and closing of the flexible pipeline, for example, if the flexible pipeline is partially fallen, when the electromagnetic valve is required to be closed, the electromagnetic valve can not compress the whole section of the flexible pipeline to be closed, and only part of the section can be compressed, which causes incomplete closing of the electromagnetic valve, and if the electromagnetic valve is completely separated, the electromagnetic valve cannot control the closing of the flexible pipeline.
At present, the battery valve of the hemorheology instrument is more, and if the detection result is incorrect due to the problem of the electromagnetic valve, the case needs to be disassembled to judge which electromagnetic valve has a problem one by one, which is extremely tedious.
Disclosure of Invention
The invention aims to solve the problems of low efficiency and high difficulty caused by the fact that the chassis needs to be disassembled one by one to remove after the electromagnetic valve of the conventional hemorheology instrument has problems, and provides a method for judging the working state of the electromagnetic valve based on pressure detection.
According to the method for judging the working state of the electromagnetic valve based on pressure detection, the electromagnetic valve to be detected, a pump and a sensor are all arranged in one channel, the electromagnetic valve to be detected is arranged between the pump and the sensor, the pump is started, the electromagnetic valve to be detected is opened if data collected by the sensor is changed, and the electromagnetic valve to be detected is closed if the data collected by the sensor is not changed.
Preferably, the electromagnetic valve is opened, one end of the channel, which is far away from the pump, is closed, the pump is started to pressurize the channel in which the electromagnetic valve is located, when data collected by the sensor reaches a first preset value, the pump is reversely rotated to suck fluid in the channel in which the electromagnetic valve is located to reduce pressure, if the pressure reduction rate is smaller than the preset rate, the electromagnetic valve is not completely opened, otherwise, the electromagnetic valve is completely opened.
Preferably, the time from the start of the pump reversal to the time when the data acquired by the first sensor after depressurization reaches a first preset value is T, and if T is greater than the maximum value of the first preset interval, the depressurization rate is less than a preset rate.
Preferably, the electromagnetic valve to be tested is normal, the electromagnetic valve to be tested is closed, the pump is started to pressurize the channel where the electromagnetic valve is located, and the value obtained after data acquired by the sensor are stable is the first preset value; the pump is reversed after the data acquired by the sensor is stable, and the value of the data acquired by the sensor after the pump is reversed after the data is stable is the first preset value; and recording the time from the start of the reverse rotation of the pump to the time when the reduced pressure data collected by the electromagnetic valve reaches a first preset value, and carrying out a plurality of tests, wherein the interval between the maximum value and the minimum value of the time from the start of the reverse rotation of the pump to the time when the reduced pressure data collected by the electromagnetic valve reaches the first preset value is the first preset interval.
The application also discloses another kind of method based on pressure detection judges solenoid valve operating condition, solenoid valve, pump and the sensor that awaits measuring all set up in a passageway, the sensor sets up the pump with await measuring between the solenoid valve, keeping away from of passageway the one end of pump is sealed, starts the pump, close after the data stability that the sensor was gathered the pump, if the data that the sensor was gathered do not take place obvious change then the solenoid valve that awaits measuring closes, otherwise the solenoid valve that awaits measuring opens.
Compared with the prior art, the invention has the beneficial effects that: the operating condition of the electromagnetic valve can be judged only by collecting pressure data, whether the electromagnetic valve is in a problem or not can be known by comparing the operating condition with the set operating condition, and whether the electromagnetic valve is normal or not can be judged one by one without disassembling the case, so that the electromagnetic valve is quicker and more convenient.
Description of the drawings:
FIG. 1 is a schematic diagram of a partial apparatus arrangement of a rheometer;
the labels in the figure are: the labels in the figure are: 110-pressure bin, 121-first pump, 122-second pump, 131-first solenoid valve, 132-second solenoid valve, 133-third solenoid valve, 141-first pressure sensor, 142-second pressure sensor.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
The method for judging the working state of the electromagnetic valve based on pressure detection adopts the example equipment as shown in figure 1, and comprises a pressure chamber, a sample chamber and a sample injection pipeline which are sequentially communicated, wherein a first sensor is arranged in the pressure chamber, a second sensor is arranged in the sample chamber, the pressure chamber is connected with a first pump and a second pump, the first pump and a first electromagnetic valve are arranged between the pressure chambers, the second pump and a second electromagnetic valve are arranged between the pressure chambers, a third electromagnetic valve is arranged on the sample injection pipeline, the pipeline where the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are arranged is a pipeline formed by a flexible pipe, the electromagnetic valve compresses the flexible pipe through the outside to close the pipeline, and the flexible pipe recovers through self elasticity to open the pipeline after the electromagnetic valve is compressed and released. The first sensor is a pressure sensor and is used for testing and measuring the pressure in the pressure bin;
the method comprises the steps that a first electromagnetic valve is used as an electromagnetic valve to be tested, the first electromagnetic valve, a first pump and a first sensor are arranged in the same channel and are communicated with each other through the channel, when the first electromagnetic valve is detected, a second electromagnetic valve and a third electromagnetic valve are closed, so that the communication between other channels and a pressure cabin is disconnected except the channel where the electromagnetic valve to be tested is communicated with the pressure cabin, the first pump of the channel where the electromagnetic valve to be tested is started, if the data collected by the first sensor is changed, the electromagnetic valve to be tested is opened, and if the data collected by the first sensor is not changed, the electromagnetic valve to be tested is closed; if the detected state of the solenoid valve to be tested is the same as the preset state, the solenoid valve to be tested works normally, otherwise, the solenoid valve to be tested is abnormal, for example, if the first solenoid valve is closed first and then the last detection is performed, and as a result, the data collected by the first sensor is changed, it is indicated that the operation of the first pump does not affect the fluid in the pressure chamber where the first sensor is located, it is indicated that the first solenoid valve is actually closed, the first solenoid valve works normally, and if the detection result is that the data collected by the first sensor is changed, it is indicated that the rotation of the first pump can affect the fluid pressure change of the pressure chamber, so that the first solenoid valve is actually opened, and different from the preset closing state, it is indicated that the first solenoid valve works abnormally, and the first solenoid valve.
The second electromagnetic valve can be detected by analogy, the second pump operates when the second electromagnetic valve is detected, the third pump operates when the third electromagnetic valve is detected, the third pump is arranged on the sample injection pipeline, and the third electromagnetic valve is arranged between the third pump and the pressure bin.
The electromagnetic valve is opened completely, the electromagnetic valve is opened incompletely, for example, the electromagnetic valve is opened only half, if the electromagnetic valve is opened incompletely, the detection accuracy of the hemorheological instrument is also affected, for the problem that whether the electromagnetic valve to be detected is opened completely is detected, taking a first electromagnetic valve as the electromagnetic valve to be detected as an example, the electromagnetic valve to be detected is opened firstly, and a second electromagnetic valve and a third electromagnetic valve are closed, so that the communication between other channels except the channel where the electromagnetic valve to be detected is communicated with the pressure bin is cut off, the first pump of the channel where the electromagnetic valve to be detected is located is started to pump outside air to pressurize the pressure bin, when data collected by the first sensor reaches a first preset value, the pump is reversed to pump the air in the pressure bin to reduce the pressure, and if the pressure reduction rate is smaller than a preset rate, the electromagnetic valve to be detected is opened incompletely, the electromagnetic valve to be tested is abnormal, otherwise, the electromagnetic valve to be tested is completely opened, so that the electromagnetic valve to be tested is normal.
At the first preset value, it can be obtained that: replacing the electromagnetic valve to be tested with a normal electromagnetic valve, wherein the working condition of the normal electromagnetic valve is the same as that of the electromagnetic valve to be tested, namely, firstly opening the electromagnetic valve to be tested, and closing the second electromagnetic valve and the third electromagnetic valve, so that the communication between other channels and the pressure bin is disconnected except for the communication between the channel where the electromagnetic valve to be tested is located and the pressure bin, starting a first pump of the channel where the electromagnetic valve to be tested is located to pump outside air so as to pressurize the pressure bin, wherein data collected by a first sensor after the pressure of the pressure bin is stabilized can be used as a first preset value, and half of the data collected by the first sensor after the pressure is stabilized can be used as the;
for the preset speed, namely the pressure reduction speed of the normal electromagnetic valve under the condition that the working conditions of the electromagnetic valve to be tested are the same, the normal electromagnetic valve can be used to replace the electromagnetic valve to be measured, the data collected by the first sensor after the pressure of the pressure chamber is stable can be used as a first preset value, when the first pump pumps outside air to pressurize the pressure cabin and the pressure of the pressure cabin is stable, the first pump rotates reversely to reduce the pressure of the pressure cabin, the time from the start of the reverse rotation of the first pump to the pressure stability of the pressure cabin is the normal pressure drop time, a plurality of normal solenoid valves are adopted for testing to obtain a plurality of normal pressure drop times, the interval between the maximum value and the minimum value in the normal pressure drop times is the first preset interval, if the pressure of the electromagnetic valve to be tested is reduced from the first preset value until the stabilizing time is longer than the maximum value of the first preset interval, the pressure reduction rate of the electromagnetic valve to be tested is slower than the preset rate; of course, if the normal solenoid valve starts to reduce the pressure of the pressure chamber from the first preset value and continues to reach the first pressure value after the normal time period, and the solenoid valve to be tested starts to reduce the pressure of the pressure chamber from the first preset value and continues to reach the second pressure value after the normal time period under the same working condition, if the second pressure value is higher than the first pressure value, the pressure drop rate of the solenoid valve to be tested is also agreed to be slower than the preset rate.
For the third solenoid valve in fig. 1, the following method can be adopted for detection:
except that the channel where the third electromagnetic valve is located is communicated with the pressure bin, other channels communicated with the pressure bin are closed, the first pump is started, the first pump is closed after data collected by the first sensor is stable, the third electromagnetic valve is closed if the data collected by the first sensor does not change obviously, and the third electromagnetic valve is opened otherwise; the first pump stops rotating and may cause slight pressure influence on the pressure chamber, so that judgment is carried out only by means of obvious change, and misjudgment caused by stopping of the pump is avoided; the second pump can be used for replacing the first pump to detect the third electromagnetic valve; this scheme is compared in the above-mentioned scheme that detects the third solenoid valve, need not to set up the third pump on the injection pipeline, and the quantity of required pump is still less, and manufacturing cost is lower and the volume is littleer.
Claims (5)
1. The method for judging the working state of the electromagnetic valve based on pressure detection is characterized in that the electromagnetic valve to be detected, a pump and a sensor are all arranged in one channel, the electromagnetic valve to be detected is arranged between the pump and the sensor, the pump is started, the electromagnetic valve to be detected is opened if data collected by the sensor is changed, and the electromagnetic valve to be detected is closed if the data collected by the sensor is not changed.
2. The method for judging the working state of the electromagnetic valve based on the pressure detection as claimed in claim 1, wherein the electromagnetic valve is opened, one end of the channel, which is far away from the pump, is closed, the pump is started to pressurize the channel in which the electromagnetic valve is located, when data collected by the sensor reaches a first preset value, the pump is reversely rotated to suck fluid in the channel in which the electromagnetic valve is located so as to reduce pressure, if the pressure reduction rate is smaller than a preset rate, the electromagnetic valve is not completely opened, otherwise, the electromagnetic valve is completely opened.
3. The method for determining the working state of the electromagnetic valve based on the pressure detection as claimed in claim 2, wherein the time from the start of the reverse rotation of the pump to the time when the data collected by the first sensor after the pressure reduction reaches a first preset value is T, and if T is greater than the maximum value of the first preset interval, the pressure reduction rate is less than a preset rate.
4. The method for judging the working state of the electromagnetic valve based on the pressure detection as claimed in claim 3, wherein the electromagnetic valve to be detected is normal, the electromagnetic valve to be detected is closed, the pump is started to pressurize the channel where the electromagnetic valve is located, and the value after the data collected by the sensor is stable is the first preset value; the pump is reversed after the data acquired by the sensor is stable, and the value of the data acquired by the sensor after the pump is reversed after the data is stable is the first preset value; and recording the time from the start of the reverse rotation of the pump to the time when the reduced pressure data collected by the electromagnetic valve reaches a first preset value, and carrying out a plurality of tests, wherein the interval between the maximum value and the minimum value of the time from the start of the reverse rotation of the pump to the time when the reduced pressure data collected by the electromagnetic valve reaches the first preset value is the first preset interval.
5. The method for judging the working state of the electromagnetic valve based on pressure detection is characterized in that the electromagnetic valve to be detected, a pump and a sensor are all arranged in a channel, the sensor is arranged between the pump and the electromagnetic valve to be detected, one end, far away from the pump, of the channel is closed, the pump is started, data collected by the sensor are closed after being stabilized, if the data collected by the sensor do not change obviously, the electromagnetic valve to be detected is closed, and otherwise, the electromagnetic valve to be detected is opened.
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| CN201911302758.XA CN111076922B (en) | 2019-12-17 | 2019-12-17 | Method for judging working state of electromagnetic valve based on pressure detection |
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| CN201911302758.XA CN111076922B (en) | 2019-12-17 | 2019-12-17 | Method for judging working state of electromagnetic valve based on pressure detection |
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| CN111076922B CN111076922B (en) | 2021-09-24 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090124618A (en) * | 2008-05-30 | 2009-12-03 | 주식회사 현대오토넷 | Apparatus and method for testing valve of solenoid |
| JP2012152289A (en) * | 2011-01-24 | 2012-08-16 | Asahi Kasei Medical Co Ltd | Blood purification device, and operation method of the same |
| CN103994870A (en) * | 2013-02-20 | 2014-08-20 | 珠海格力电器股份有限公司 | Detection apparatus and detection method for four-way valve |
| CN104225701A (en) * | 2014-09-26 | 2014-12-24 | 昆山韦睿医疗科技有限公司 | Valve state detection method and system and peritoneal dialysis equipment |
| JP2015040741A (en) * | 2013-08-21 | 2015-03-02 | トヨタ自動車株式会社 | Solenoid valve inspection method |
| CN206488914U (en) * | 2017-01-03 | 2017-09-12 | 深圳市恒永达科技有限公司 | A kind of miniature electromagnetic valve comprehensive detection system |
| CN207066736U (en) * | 2017-08-08 | 2018-03-02 | 山东泰展机电科技股份有限公司 | A kind of magnetic valve open degree test device |
| CN109357818A (en) * | 2018-11-20 | 2019-02-19 | 查春妹 | Detection device is used in a kind of processing of fire valve |
| CN110044789A (en) * | 2019-04-10 | 2019-07-23 | 东北石油大学 | A kind of minimum measuring device and method for starting pressure and pressure-wave emission rate |
| CN209280725U (en) * | 2018-11-29 | 2019-08-20 | 重庆南方数控设备有限责任公司 | A kind of blood rheological instrument glass-tube |
| CN209673361U (en) * | 2019-05-17 | 2019-11-22 | 普瑞泰格(南京)安全设备有限公司 | A kind of intelligent valve testboard |
-
2019
- 2019-12-17 CN CN201911302758.XA patent/CN111076922B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090124618A (en) * | 2008-05-30 | 2009-12-03 | 주식회사 현대오토넷 | Apparatus and method for testing valve of solenoid |
| JP2012152289A (en) * | 2011-01-24 | 2012-08-16 | Asahi Kasei Medical Co Ltd | Blood purification device, and operation method of the same |
| CN103994870A (en) * | 2013-02-20 | 2014-08-20 | 珠海格力电器股份有限公司 | Detection apparatus and detection method for four-way valve |
| JP2015040741A (en) * | 2013-08-21 | 2015-03-02 | トヨタ自動車株式会社 | Solenoid valve inspection method |
| CN104225701A (en) * | 2014-09-26 | 2014-12-24 | 昆山韦睿医疗科技有限公司 | Valve state detection method and system and peritoneal dialysis equipment |
| CN206488914U (en) * | 2017-01-03 | 2017-09-12 | 深圳市恒永达科技有限公司 | A kind of miniature electromagnetic valve comprehensive detection system |
| CN207066736U (en) * | 2017-08-08 | 2018-03-02 | 山东泰展机电科技股份有限公司 | A kind of magnetic valve open degree test device |
| CN109357818A (en) * | 2018-11-20 | 2019-02-19 | 查春妹 | Detection device is used in a kind of processing of fire valve |
| CN209280725U (en) * | 2018-11-29 | 2019-08-20 | 重庆南方数控设备有限责任公司 | A kind of blood rheological instrument glass-tube |
| CN110044789A (en) * | 2019-04-10 | 2019-07-23 | 东北石油大学 | A kind of minimum measuring device and method for starting pressure and pressure-wave emission rate |
| CN209673361U (en) * | 2019-05-17 | 2019-11-22 | 普瑞泰格(南京)安全设备有限公司 | A kind of intelligent valve testboard |
Non-Patent Citations (2)
| Title |
|---|
| 田洪海: "气介质电磁阀测试系统的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 路东梅 等: "MVIS血液流变仪故障检修3例", 《医疗设备信息》 * |
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Effective date of registration: 20221216 Address after: Room 601, No. 88, Wanchuang Road, Tangjiawan Town, High tech Zone, Zhuhai City, Guangdong Province, 519000 Patentee after: Zhuhai Yongyan Experimental Instrument Co.,Ltd. Address before: 400020 12-2, 3, digital building, No. 26, Xinglong Road, Jiangbei District, Chongqing Patentee before: Chongqing Nanfang numerical control equipment Co.,Ltd. |