WO2022041968A1 - 一种液位监测装置、取样监测方法 - Google Patents

一种液位监测装置、取样监测方法 Download PDF

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WO2022041968A1
WO2022041968A1 PCT/CN2021/101126 CN2021101126W WO2022041968A1 WO 2022041968 A1 WO2022041968 A1 WO 2022041968A1 CN 2021101126 W CN2021101126 W CN 2021101126W WO 2022041968 A1 WO2022041968 A1 WO 2022041968A1
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liquid level
water
water sample
sample cup
sampling
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PCT/CN2021/101126
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English (en)
French (fr)
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李智
蒙良庆
蔡志
陈龙龙
张卫斌
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力合科技（湖南）股份有限公司
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Publication of WO2022041968A1 publication Critical patent/WO2022041968A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/00594—Quality control, including calibration or testing of components of the analyser
    • G01N35/00613—Quality control
    • G01N35/00623—Quality control of instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/00594—Quality control, including calibration or testing of components of the analyser
    • G01N35/00613—Quality control
    • G01N35/00623—Quality control of instruments
    • G01N2035/00643—Quality control of instruments detecting malfunctions in conveying systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N2035/1025—Fluid level sensing

Definitions

  • the invention relates to the technical field of on-line monitoring of water quality, in particular, to a liquid level monitoring device, and also to a sampling monitoring method using the above liquid level monitoring device.
  • On-line water quality monitoring includes main monitoring processes such as automatic sampling, automatic pretreatment, automatic sample preparation, and automatic analysis.
  • main monitoring processes such as automatic sampling, automatic pretreatment, automatic sample preparation, and automatic analysis.
  • on-line water quality monitoring products on the market have relatively weak process monitoring technology, and the key processes and links of automatic on-line monitoring may be artificially falsified. Vulnerability.
  • interfering with the sampling of analytical instruments is a typical fraudulent method.
  • the fraudster takes out the sample injection tube of the instrument from the water sample cup of the system and places it in the artificially prepared water sample to achieve Change the purpose of monitoring results.
  • the invention provides a liquid level monitoring device and a sampling monitoring method, so as to solve the technical problem that the fraudulent behavior in the sampling process of the instrument cannot be effectively prevented at present.
  • a liquid level monitoring device comprising a water sample cup, a pressure detection module and a controller, wherein the water sample cup is used for connecting with a water distribution system and a water quality monitoring instrument respectively, and the pressure detection module passes through The pipeline is tightly connected with the water sample cup and used to detect the pressure value in the water sample cup, and the controller is connected with the pressure detection module and used to identify the current liquid level in the water sample cup according to the pressure value detected by the pressure detection module;
  • the controller calculates the drop value of the liquid level in the water sample cup according to the sampling amount of the water quality monitoring instrument. After the water quality monitoring instrument completes sampling from the water sample cup, if the controller detects the liquid level in the water sample cup When the descending height does not reach the calculated liquid level descending value, it is judged that the sampling of the instrument is abnormal.
  • a liquid level detection joint is provided on the bottom side wall of the water sample cup, and the pressure detection module is sealedly connected to the liquid level detection joint through a pipeline.
  • liquid level detection joint is inclined upward on the bottom side wall of the water sample cup.
  • the inner cavity volume of the liquid level detection joint is larger than the air compression amount in the pipeline when the water sample cup is full.
  • the controller is further configured to detect the tightness between the pressure detection module and the water sample cup according to whether there is a change in the pressure value detected by the pressure detection module within a period of time.
  • controller is also used to connect with the water quality monitoring instrument, and when the controller determines that the sampling of the instrument is abnormal, the controller is also used to mark and give an early warning to the test data of the water quality monitoring instrument.
  • the controller when the water distribution system distributes water to a plurality of water sample cups, when the controller identifies that a certain water sample cup is full or reaches a preset water level, the controller controls the corresponding water quality monitoring instrument to perform sampling.
  • the controller detects that a certain water sample cup is still not full or does not reach the preset water level, the controller issues a water shortage fault prompt;
  • the controller will issue a drain fault prompt.
  • the present invention also provides a sampling monitoring method, using the above-mentioned liquid level monitoring device, comprising the following steps:
  • Step S1 dispense water to the water sample cup, and monitor the liquid level in the water sample cup in real time;
  • Step S2 perform a sampling operation after the water distribution is completed
  • Step S3 Calculate and obtain the liquid level drop value in the water sample cup according to the sampling amount. If it is detected that the liquid level drop height in the water sample cup does not reach the liquid level drop value, it is determined that the sampling is abnormal.
  • step S2 also includes the following:
  • the liquid level monitoring device of the present invention detects the pressure value in the water sample cup through the pressure detection module, and then calculates the current liquid level in the water sample cup through the controller according to the pressure value detected by the pressure detection module, so as to detect the water sample cup.
  • the liquid level inside is monitored in real time.
  • the controller can completely monitor the whole process of water sample cup sampling, sample layout and instrument sampling, and can provide reliable process traceability basis for detection data.
  • the value of the liquid level drop in the water sample cup is converted according to the sampling amount of the water quality monitoring instrument. After the sampling is completed, if it is detected that the liquid level drop in the water sample cup does not reach the budget value, it is judged that the sampling is abnormal and the test is performed.
  • sampling monitoring method of the present invention also has the above advantages.
  • FIG. 1 is a schematic structural diagram of a liquid level monitoring device according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a sampling monitoring method according to another embodiment of the present invention.
  • a preferred embodiment of the present invention provides a liquid level monitoring device, including a water sample cup 10 , a pressure detection module 11 and a controller 12 .
  • the water sample cup 10 is used for monitoring the water distribution system and water quality respectively.
  • the water distribution system can distribute water to the water sample cup 10, and deliver the collected water samples to the water sample cup 10.
  • the water quality monitoring instrument can take samples from the water sample cup 10 for testing.
  • the liquid level in the cup 10 should drop somewhat, and the present invention prevents fraudulent behavior in the sampling process of the water quality monitoring instrument by monitoring the liquid level change in the water sample cup 10 in real time.
  • the pressure detection module 11 is hermetically connected to the water sample cup 10 through the pipeline 13 and is used to detect the pressure value in the water sample cup 10.
  • the pressure detection module 11 may use a pressure gauge, a pressure transmitter or other pressures Detection device
  • the controller 12 is connected to the pressure detection module 11 and used to identify the current liquid level in the water sample cup 10 according to the pressure value detected by the pressure detection module 11, so as to realize the detection of the liquid level in the water sample cup 10. real-time monitoring. If the controller 12 detects that the liquid level in the water sample cup 10 does not change after the water quality monitoring instrument completes sampling, it determines that the sampling is abnormal. Put it in an artificially prepared water sample.
  • the controller 12 can obtain the liquid level drop value by conversion according to the sampling amount of the water quality monitoring instrument. After the water quality monitoring instrument completes sampling, if the controller 12 monitors that the liquid level drop height in the water sample cup 10 is not equal to When the liquid level drops by a value, it is determined that the sampling is abnormal, and the test is invalid.
  • the pressure detection module 11 can be directly electrically connected to the controller 12, or the pressure detection module 11 and the controller 12 can be communicated and connected through at least one of NFC, Bluetooth, infrared, Wifi and RFID.
  • the controller 12 can be a single chip microcomputer or a PLC.
  • the pipeline 13 adopts an air pipe. It can be understood that since the water quality monitoring instrument may use different ranges for testing, and its sampling amount is also different, the controller 12 can convert the sampling amount corresponding to different test ranges of the water quality monitoring instrument to obtain the liquid level drop in different water sample cups 10. value.
  • the water sample volume required by the monitoring instrument for the current test is V
  • the theoretical drop height h of the water level in the water sample cup 10 is:
  • the pressure detection module 11 Before sampling by the monitoring instrument, the pressure detection module 11 detects that the pressure of the water sample in the water sample cup 10 is P 0 . After sampling by the monitoring instrument, the pressure detection module 11 detects that the pressure of the water sample in the water sample cup 10 is P 1 , and then monitors The actual drop height h′ of the water level of the water sample cup 10 caused by the sampling of the instrument is:
  • the controller may determine that the sampling process of the monitoring instrument is suspected of falsification.
  • the liquid level monitoring device of this embodiment detects the pressure value in the water sample cup 10 through the pressure detection module 11 , and then calculates the pressure value in the water sample cup 10 through the controller 12 according to the pressure value detected by the pressure detection module 11 .
  • the current liquid level so as to monitor the liquid level in the water sample cup 10 in real time.
  • the value of the liquid level drop in the water sample cup 10 is converted according to the sampling amount of the water quality monitoring instrument.
  • a liquid level detection joint 101 is provided on the bottom side wall of the water sample cup 10 , and the pressure detection module 11 is detachably sealed with the liquid level detection joint 101 through the pipeline 13 . connect.
  • the liquid level detection joint 101 is inclined upward on the bottom side wall of the water sample cup 10 . The water sample is discharged smoothly without affecting the next sampling test.
  • the inclination angle of the liquid level detection joint 101 is between 60° and 90°.
  • the inclination angle of the liquid level detection joint 101 can be adaptively adjusted according to actual needs. This is not specifically limited.
  • the volume of the inner cavity of the liquid level detection joint 101 is greater than the air compression volume in the pipeline 13 when the water sample cup 10 is full, so that when the water sample cup 10 is filled with water from the beginning to the full cup, the water sample All of them will not enter the pipeline 13, so that the residual water droplets in the pipeline 13 can be prevented from affecting the pressure detection, and the accuracy of the pressure detection is improved.
  • the controller 12 can measure the pressure detected by the pressure detection module 11 within a period of time according to the pressure detected by the pressure detection module 11. Check whether the value changes to detect the tightness between the pressure detection module 11 and the water sample cup 10. If the pressure value decreases, it means that the tightness between the pressure detection module 11 and the water sample cup 10 is poor, and there may be air leakage. Case.
  • the controller 12 determines that there is air leakage between the pressure detection module 11 and the water sample cup 10
  • an early warning is issued to remind the staff to perform maintenance in time.
  • the controller 12 is also connected to a water quality monitoring instrument.
  • the controller 12 determines that the sampling of the instrument is abnormal, the controller 12 marks the test data of the water quality monitoring instrument and gives an early warning, so as to facilitate the later stage The test data will be excluded from the statistical data.
  • the liquid level monitoring device can monitor the liquid level in multiple water sample cups 10 in real time at the same time.
  • Each water sample cup 10 is individually sealed and connected to a pressure detection module 11.
  • the controller 12 is connected.
  • each water sample cup 10 is connected with a water quality monitoring instrument, which can be one water quality monitoring instrument connected to one water sample cup 10, or multiple water sample cups 10 connected to one water quality monitoring instrument, or multiple water quality monitoring instruments connected.
  • a water quality monitoring instrument can be one water quality monitoring instrument connected to one water sample cup 10, or multiple water sample cups 10 connected to one water quality monitoring instrument, or multiple water quality monitoring instruments connected.
  • the controller 12 correspondingly calculates the current liquid level in each water sample cup 10 through the pressure value detected by each pressure detection module 11 , and can also control the water quality monitoring instrument to perform sampling operations.
  • the controller 12 When the water distribution system distributes water to a plurality of water sample cups 10, when the controller 12 recognizes that a certain water sample cup 10 is full or reaches a preset water level (water level required by the water quality monitoring instrument), the controller 12 Control the corresponding water quality monitoring instrument for sampling test, so as to realize automatic sampling control.
  • the controller 12 when the controller 12 monitors that a certain water sample cup 10 is still not full or does not reach the preset water level after the water distribution is completed, the controller 12 issues a water shortage fault prompt to remind the staff
  • the water sample cup 10 may have abnormal conditions, such as water leakage failure, water distribution failure, and the like.
  • the controller 12 will issue a drainage fault prompt. For example, when the drain valve of the sampling cup 10 is opened to empty the water sample, after a period of time the water sample in the sampling cup 10 should have been emptied, if the pressure detection module 11 can still detect the water sample cup 10 If the liquid level value inside, it means that the drain valve may be faulty, and the controller 12 will issue a drain failure prompt to remind the staff to repair or replace the drain valve in time.
  • another embodiment of the present invention also provides a sampling monitoring method, which preferably adopts the above-mentioned liquid level monitoring device, comprising the following steps:
  • Step S1 dispensing water to the water sample cup 10, and monitoring the liquid level in the water sample cup 10 in real time;
  • Step S2 perform a sampling operation after the water distribution is completed
  • Step S3 Calculate the value of the liquid level drop in the water sample cup 10 according to the sampling amount. If it is detected that the liquid level drop height in the water sample cup 10 does not reach the liquid level drop value, it is determined that the sampling is abnormal.
  • step S1 water is distributed to at least one water sample cup 10 through the water distribution system.
  • the pressure detection module 11 corresponding to each water sample cup 10 is used to detect the internal pressure value, and then control the The device 12 identifies the current liquid level in each water sample cup 10 through the pressure value of each pressure detection module 11 , so as to realize real-time monitoring of the liquid level of each water sample cup 10 .
  • step S2 when the water distribution system distributes water to a plurality of water sample cups 10, when the controller 12 recognizes that a certain water sample cup 10 is full or reaches the preset water level, it controls the corresponding water sample cup 10.
  • the water quality monitoring instrument is used for sampling, so as to realize automatic sampling control based on liquid level monitoring.
  • the controller 12 detects that a certain water sample cup 10 is still not full or does not reach the preset water level after the completion of water distribution, it will issue a water shortage fault prompt.
  • the controller 12 calculates the value of the liquid level drop in the water sample cup 10 based on the sampling amount of the water quality monitoring instrument. If the liquid level drop in the water sample cup 10 is detected after the sampling is completed When the height does not reach this value, it is determined that the sampling is abnormal. Preferably, when it is determined that the sampling is abnormal, the test data of this time is marked and an early warning is given. It can be understood that since the water quality monitoring instrument may use different ranges for testing, and its sampling amount is also different, the controller 12 can convert the sampling amount corresponding to different test ranges of the water quality monitoring instrument to obtain the liquid level drop in different water sample cups 10. value.
  • sampling monitoring method also comprises the following steps after sampling test is completed:
  • the sampling cup 10 is drained, and if the liquid level value in the water sampling cup 10 can still be detected after the draining is completed, a drainage failure prompt will be issued. For example, when the drain valve of the sampling cup 10 is opened to empty the water sample, the water sample in the sampling cup 10 should have been emptied after a period of time. If the liquid level value is higher, it means that the drain valve is faulty, and the controller 12 will issue a drain failure prompt to remind the staff to repair or replace the drain valve in time.
  • the liquid level in the water sample cup 10 is monitored in real time, and the value of the liquid level drop in the water sample cup 10 is calculated according to the sampling amount of the water quality monitoring instrument.
  • the liquid level drop height in the sample cup 10 does not reach this value, it is determined that the sampling is abnormal, and the test is invalid, to prevent the occurrence of artificially taking the sampling tube of the water quality monitoring instrument out of the water sample cup 10 and placing it in artificially prepared water.
  • the sampling process can be monitored in real time, which improves the data reliability and anti-counterfeiting performance of automatic water quality monitoring.

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Abstract

一种液位监测装置、取样监测方法，该方法通过压力检测模块（11）检测水样杯（10）内的压力值，然后根据压力检测模块（11）检测到的压力值计算出水样杯（10）内的当前液位，从而对水样杯（10）内的液位进行实时监测，并且根据水质监测仪器的取样量换算得到水样杯（10）内的液位下降数值，在取样完成后若检测到水样杯（10）内的液位下降高度未到达预算值时，则判断取样异常，该次测试无效，以此防止出现人为将水质监测仪器的进样管从水样杯（10）内取出后置于人为调制的水样中，从而对进样过程进行实时监控，提高了水质自动监测的数据可靠性和防伪性能。

Description

一种液位监测装置、取样监测方法 技术领域
本发明涉及水质在线监测技术领域，特别地，涉及一种液位监测装置，另外，还涉及一种采用上述液位监测装置的取样监测方法。
背景技术
水质在线监测包括自动采样、自动预处理、自动配样、自动分析等主要监测过程，目前市面上的水质在线监测产品，过程监控技术相对薄弱，自动在线监测的关键过程及环节可能存在人为弄虚作假的漏洞。在上述作假行为中，干扰分析仪器进样是一种典型的作假方式，作假行为人将仪器进样管从系统的水样杯中取出，并将其置于人为调制的水样中，以达到改变监测结果的目的。
而目前对于仪器进样过程的作假行为，尚缺少行之有效的防范措施。
发明内容
本发明提供了一种液位监测装置、取样监测方法，以解决目前无法对仪器进样过程的作假行为进行有效防范的技术问题。
根据本发明的一个方面，提供一种液位监测装置，包括水样杯、压力检测模块和控制器，所述水样杯用于分别与配水系统、水质监测仪器连接，所述压力检测模块通过管路与水样杯密封连接并用于检测水样杯内的压力值，所述控制器与压力检测模块连接并用于根据压力检测模块检测到的压力值识别出水样杯内的当前液位；
所述控制器根据水质监测仪器的取样量计算得到水样杯内的液位下降数值，当水质监测仪器从水样杯中取样完成后，若所述控制器检测到水样杯内的液位下降高度未达到计算得到的液位下降数值时，则判定仪器取样异常。
进一步地，所述水样杯的底部侧壁上设置有液位检测接头，所述压力检测模块通过管路与液位检测接头密封连接。
进一步地，所述液位检测接头在水样杯的底部侧壁朝上倾斜设置。
进一步地，所述液位检测接头的内腔体积大于水样杯满杯时管路内的空气压缩量。
进一步地，当水样杯内的液位稳定后，所述控制器还用于根据一段时间内压力检测模块检测的压力值是否有变化来检测压力检测模块与水样杯之间的密封性。
进一步地，所述控制器还用于与水质监测仪器连接，当所述控制器判定仪器取样异常时，所述控制器还用于对水质监测仪器的该次测试数据进行标记并预警。
进一步地，在配水系统对多个水样杯进行配水时，当所述控制器识别出某一个水样杯满杯或达到预设水位时，所述控制器控制对应的水质监测仪器进行取样。
进一步地，当配水结束后，若所述控制器监测到某一个水样杯仍未满杯或未达到预设水位时，所述控制器发出缺水故障提示；
或者，当对取样杯进行排水结束后，若所述控制器仍能检测到水样杯内的液位值，则所述控制器发出排水故障提示。
本发明还提供一种取样监测方法，采用如上所述的液位监测装置，包括以下步骤：
步骤S1：对水样杯进行配水，并实时监测水样杯内的液位；
步骤S2：当配水完成后进行取样操作；
步骤S3：根据取样量计算得到水样杯内的液位下降数值，若检测到水样杯内的液位下降高度未达到该液位下降数值时，则判定取样异常。
进一步地，所述步骤S2还包括以下内容：
当配水结束后，若监测到某一个水样杯仍未满杯或未达到预设水位时， 发出缺水故障提示。
本发明具有以下效果：
本发明的液位监测装置，通过压力检测模块检测水样杯内的压力值，然后通过控制器根据压力检测模块检测到的压力值计算出水样杯内的当前液位，从而对水样杯内的液位进行实时监测，通过上述方式，控制器可完整监控水样杯进样、排样及仪器取样全过程，能为检测数据提供可靠的过程溯源依据。并且根据水质监测仪器的取样量换算得到水样杯内的液位下降数值，在取样完成后若检测到水样杯内的液位下降高度未到达预算值时，则判断取样异常，该次测试无效，防止出现人为将水质监测仪器的进样管从水样杯内取出后置于人为调制的水样中，可以对进样过程进行实时监控，提高了水质自动监测的数据可靠性和防伪性能。
另外，本发明的取样监测方法同样具有上述优点。
除了上面所描述的目的、特征和优点之外，本发明还有其它的目的、特征和优点。下面将参照图，对本发明作进一步详细的说明。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是本发明优选实施例的液位监测装置的结构示意图。
图2是本发明另一实施例的取样监测方法的流程示意图。
附图标记说明
10、水样杯；11、压力检测模块；12、控制器；101、液位检测接头；13、管路。
具体实施方式
以下结合附图对本发明的实施例进行详细说明，但是本发明可以由下 述所限定和覆盖的多种不同方式实施。
如图1所示，本发明的优选实施例提供一种液位监测装置，包括水样杯10、压力检测模块11和控制器12，所述水样杯10用于分别与配水系统、水质监测仪器连接，配水系统可以对水样杯10进行配水，将采集到的水样输送至水样杯10内，水质监测仪器则可以从水样杯10内取样进行测试，当取样完成后，水样杯10内的液位应当有所下降，本发明则是通过实时监测水样杯10内的液位变化来防范水质监测仪器进样过程中的作假行为。具体地，所述压力检测模块11通过管路13与水样杯10密封连接并用于检测水样杯10内的压力值，所述压力检测模块11可以采用压力计、压力变送器或其它压力检测器件，所述控制器12与压力检测模块11连接并用于根据压力检测模块11检测到的压力值识别出水样杯10内的当前液位，从而实现对水样杯10内的液位进行实时监测。若当水质监测仪器取样完成后，控制器12检测到水样杯10内的液位无变化，则判定取样异常，可能存在人为将水质监测仪器的进样管从水样杯10内取出，并将其置于人为调制的水样中。作为优选的，所述控制器12可以根据水质监测仪器的取样量换算得到液位下降数值，当水质监测仪器取样完成后，若控制器12监测到水样杯10内的液位下降高度不等于该液位下降数值时，则判定取样异常，该次测试无效。可以理解，所述压力检测模块11可以直接与控制器12电性连接，或者所述压力检测模块11和控制器12通过NFC、蓝牙、红外、Wifi和RFID中的至少一种进行通信连接，所述控制器12可以采用单片机或者PLC。另外，所述管路13采用空气管。可以理解，由于水质监测仪器可能采用不同的量程进行测试，其取样量也不同，控制器12可以根据水质监测仪器的不同测试量程对应的取样量换算得到不同的水样杯10内的液位下降值。
例如，监测仪器当前测试所需的水样体积为V，则仪器从水样杯10取样完成后，水样杯10内水位理论下降高度h为：
Figure PCTCN2021101126-appb-000001
r:水样杯内径
监测仪器取样前，压力检测模块11检测到水样杯10中水样的压强为P 0，监测仪器取样后，压力检测模块11检测到水样杯10中水样的压强为P 1，则监测仪器取样所造成水样杯10水位实际下降高度h′为：
Figure PCTCN2021101126-appb-000002
ρ：水样密度
g：9.8N/kg
如果监测仪器取样前后，h′接近于零或h′明显小于h，则控制器可认定监测仪器取样过程存在作假嫌疑。
可以理解，本实施例的液位监测装置，通过压力检测模块11检测水样杯10内的压力值，然后通过控制器12根据压力检测模块11检测到的压力值计算出水样杯10内的当前液位，从而对水样杯10内的液位进行实时监测。并且根据水质监测仪器的取样量换算得到水样杯10内的液位下降数值，在取样完成后若检测到水样杯10内的液位下降高度未到达预算值时，则判断取样异常，该次测试无效，防止出现人为将水质监测仪器的进样管从水样杯10内取出后置于人为调制的水样中，可以对进样过程进行实时监控，提高了水质自动监测的数据可靠性和防伪性能。
另外，作为优选的，为了便于装拆，所述水样杯10的底部侧壁上设置有液位检测接头101，所述压力检测模块11通过管路13与液位检测接头101可拆卸式密封连接。作为进一步优选的，所述液位检测接头101在水样杯10的底部侧壁上朝上倾斜设置，倾斜设置的方式有利于在水样杯10排空时，将液位检测接头101内的水样顺利排出，不影响下次取样检测。其中，所述液位检测接头101的倾斜角度在60°～90°之间，当然在本发明的其它实施例中，可以根据实际需要对液位检测接头101的倾斜角度进行适应性调整，在此不做具体限定。
另外，作为优选的，所述液位检测接头101的内腔体积大于水样杯10满杯时管路13内的空气压缩量，这样水样杯10从开始进水至满杯时，水样均不会进入管路13中，避免管路13中残留水珠影响压力检测，提高了压力检测的精准度。
可以理解，当水样杯10内的液位稳定后，例如水样杯10满杯或者维持在水质监测仪器要求的水位时，所述控制器12可以根据一段时间内压力检测模块11检测的压力值是否有变化来检测压力检测模块11与水样杯10之间的密封性，若压力值降低，则意味着压力检测模块11与水样杯10之间的密封性较差，可能存在漏气的情况。作为优选的，当所述控制器12判定压力检测模块11与水样杯10之间存在漏气情况时发出预警，以提醒工作人员及时进行检修。
作为优选的，所述控制器12还与水质监测仪器连接，当所述控制器12判定仪器取样异常时，所述控制器12对水质监测仪器的该次测试数据进行标记并预警，以便于后期统计数据时将此次测试数据剔除。
可以理解，所述液位监测装置可以同时对多个水样杯10内的液位进行实时监测，每个水样杯10均单独密封连接一个压力检测模块11，所有的压力检测模块11均与控制器12连接。并且每个水样杯10均连接有水质监测仪器，可以是一个水质监测仪器连接一个水样杯10，也可以是多个水样杯10连接至一个水质监测仪器，或者多个水质监测仪器连接至一个水样杯10，为了便于控制，优选采用每个水质监测仪器单独连接一个水样杯10。所述控制器12通过每个压力检测模块11检测到的压力值对应地计算出每个水样杯10内的当前液位，还可以控制水质监测仪器进行取样操作。在配水系统对多个水样杯10进行配水时，当所述控制器12识别出某一个水样杯10满杯或达到预设水位(水质监测仪器要求的水位)时，所述控制器12控制对应的水质监测仪器进行取样测试，从而实现自动取样控制。
另外，作为优选的，当配水结束后，所述控制器12监测到某一个水样杯10仍未满杯或未达到预设水位时，所述控制器12发出缺水故障提示，提醒工作人员该水样杯10可能存在异常情况，例如漏水故障、配水故障等。
另外，作为优选的，当对取样杯10进行排水结束后，若所述压力检测模块11仍然能够检测到水样杯10内的液位值，则所述控制器12发出排水故障提示。例如，当打开取样杯10的排液阀进行水样排空，过了一段时间后取样杯10内的水样理当已经排空时，此时如果压力检测模块11 仍然可以检测到水样杯10内的液位值，则意味着可能排液阀出现了故障，则控制器12发出排水故障提示，以提醒工作人员及时对排液阀进行检修或更换。
另外，如图2所示，本发明的另一实施例还提供一种取样监测方法，其优选采用如上所述的液位监测装置，包括以下步骤：
步骤S1：对水样杯10进行配水，并实时监测水样杯10内的液位；
步骤S2：当配水完成后进行取样操作；
步骤S3：根据取样量计算得到水样杯10内的液位下降数值，若检测到水样杯10内的液位下降高度未达到该液位下降数值时，则判定取样异常。
可以理解，在所述步骤S1中，通过配水系统对至少一个水样杯10进行配水，在配水过程中，通过每个水样杯10对应的压力检测模块11检测其内部的压力值，进而控制器12通过每个压力检测模块11的压力值识别出每个水样杯10内的当前液位，从而实现对每个水样杯10的液位进行实时监测。
可以理解，在所述步骤S2中，当配水系统对多个水样杯10进行配水时，当所述控制器12识别出某一个水样杯10满杯或者达到预设水位时，则控制对应的水质监测仪器进行取样，从而基于液位监测实现自动取样控制。另外，若配水结束后，控制器12监测到某一个水样杯10仍未满杯或未达到预设水位时，则发出缺水故障提示。
可以理解，在所述步骤S3中，所述控制器12基于水质监测仪器的取样量计算得到水样杯10内的液位下降数值，若取样完成后检测到水样杯10内的液位下降高度未达到该数值时，则判定取样异常。作为优选的，当判定取样异常后，对该次测试数据进行标记并预警。可以理解，由于水质监测仪器可能采用不同的量程进行测试，其取样量也不同，控制器12可以根据水质监测仪器的不同测试量程对应的取样量换算得到不同的水样杯10内的液位下降值。
另外，作为优选的，所述取样监测方法在取样测试完成后还包括以下 步骤：
对取样杯10进行排水，排水结束后若仍能检测到水样杯10内的液位值，则发出排水故障提示。例如，当打开取样杯10的排液阀进行水样排空时，过了一段时间后取样杯10内的水样理当已经排空，此时如果控制器12仍然可以检测到水样杯10内的液位值，则意味着排液阀出现了故障，则控制器12发出排水故障提示，以提醒工作人员及时对排液阀进行检修或更换。
本实施例的取样监测方法，通过实时监测水样杯10内的液位，并根据水质监测仪器的取样量计算得到水样杯10内的液位下降数值，当配水完成后，若检测到水样杯10内的液位下降高度未达到该数值时，则判定取样异常，该次测试无效，防止出现人为将水质监测仪器的进样管从水样杯10内取出后置于人为调制的水样中，可以对进样过程进行实时监控，提高了水质自动监测的数据可靠性和防伪性能。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种液位监测装置，其特征在于，
    包括水样杯(10)、压力检测模块(11)和控制器(12)，所述水样杯(10)用于分别与配水系统、水质监测仪器连接，所述压力检测模块(11)通过管路(13)与水样杯(10)密封连接并用于检测水样杯(10)内的压力值，所述控制器(12)与压力检测模块(11)连接并用于根据压力检测模块(11)检测到的压力值识别出水样杯(10)内的当前液位；
    所述控制器(12)根据水质监测仪器的取样量计算得到水样杯(10)内的液位下降数值，当水质监测仪器从水样杯(10)中取样完成后，若所述控制器(12)检测到水样杯(10)内的液位下降高度未达到计算得到的液位下降数值时，则判定仪器取样异常。
  2. 如权利要求1所述的液位监测装置，其特征在于，
    所述水样杯(10)的底部侧壁上设置有液位检测接头(101)，所述压力检测模块(11)通过管路(13)与液位检测接头(101)密封连接。
  3. 如权利要求2所述的液位监测装置，其特征在于，
    所述液位检测接头(101)在水样杯(10)的底部侧壁朝上倾斜设置。
  4. 如权利要求2所述的液位监测装置，其特征在于，
    所述液位检测接头(101)的内腔体积大于水样杯(10)满杯时管路(13)内的空气压缩量。
  5. 如权利要求1所述的液位监测装置，其特征在于，
    当水样杯(10)内的液位稳定后，所述控制器(12)还用于根据一段时间内压力检测模块(11)检测的压力值是否有变化来检测压力检测模块(11)与水样杯(10)之间的密封性。
  6. 如权利要求1所述的液位监测装置，其特征在于，
    所述控制器(12)还用于与水质监测仪器连接，当所述控制器(12)判定仪器取样异常时，所述控制器(12)还用于对水质监测仪器的该次测 试数据进行标记并预警。
  7. 如权利要求1所述的液位监测装置，其特征在于，
    在配水系统对多个水样杯(10)进行配水时，当所述控制器(12)识别出某一个水样杯(10)满杯或达到预设水位时，所述控制器(12)控制对应的水质监测仪器进行取样测试。
  8. 如权利要求7所述的液位监测装置，其特征在于，
    当配水结束后，若所述控制器(12)监测到某一个水样杯(10)仍未满杯或未达到预设水位时，所述控制器(12)发出缺水故障提示；
    或者，当对取样杯(10)进行排水结束后，若所述控制器(12)仍能检测到水样杯(10)内的液位值，则所述控制器(12)发出排水故障提示。
  9. 一种取样监测方法，采用如权利要求1所述的液位监测装置，其特征在于，
    包括以下步骤：
    步骤S1：对水样杯(10)进行配水，并实时监测水样杯(10)内的液位；
    步骤S2：当配水完成后进行取样操作；
    步骤S3：根据取样量计算得到水样杯(10)内的液位下降数值，若检测到水样杯(10)内的液位下降高度未达到该液位下降数值时，则判定取样异常。
  10. 如权利要求9所述的取样监测方法，其特征在于，
    所述步骤S2还包括以下内容：
    当配水结束后，若监测到某一个水样杯(10)仍未满杯或未达到预设水位时，发出缺水故障提示。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109974808A (zh) * 2017-12-27 2019-07-05 核动力运行研究所 一种乏燃料水池自补偿式液位测量系统
CN116841235A (zh) * 2023-07-03 2023-10-03 小鲲智能技术(广州)有限公司 用于污水处理的药剂管理系统及管理方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112147350A (zh) * 2020-08-25 2020-12-29 力合科技（湖南）股份有限公司 一种液位监测装置、取样监测方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2581997Y (zh) * 2002-09-16 2003-10-22 胜利油田龙发工贸有限责任公司 水质在线分析仪潜水式采样泵
US20080289402A1 (en) * 2005-11-14 2008-11-27 Sudhir Chowdhury Method for Monitoring Water Quality
CN202018456U (zh) * 2010-10-09 2011-10-26 中国神华能源股份有限公司 水样采样杯及包括该采样杯的水质检测系统
CN102692931A (zh) * 2012-06-06 2012-09-26 李茂华 隧道消防高位水池液位监控系统及监控方法
CN205193064U (zh) * 2015-12-16 2016-04-27 成都峰占科技有限公司 水质在线监测仪器的远程监控装置及水质在线监测系统
CN205593999U (zh) * 2016-04-28 2016-09-21 邓小文 一种水质监测装置
CN209132449U (zh) * 2018-10-12 2019-07-19 天津大学 一种自动降雨量监测记录及雨水采样装置
CN112147350A (zh) * 2020-08-25 2020-12-29 力合科技（湖南）股份有限公司 一种液位监测装置、取样监测方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101571724B (zh) * 2009-06-17 2011-01-12 南京大学 智能声控液位测控方法与装置
CN103776511B (zh) * 2014-02-07 2017-01-11 深圳芯邦科技股份有限公司 一种液位信息监测方法、装置和系统
CN106932055A (zh) * 2017-04-24 2017-07-07 深圳市电应普科技有限公司 一种高精度自动取样校准超声波液位监测系统
CN109000757A (zh) * 2017-06-06 2018-12-14 郭江 一种电子式智能实时水位监测装置
CN109115305B (zh) * 2018-08-06 2019-10-29 珠海格力电器股份有限公司 容器液位检测装置、方法及净水机
CN209783981U (zh) * 2019-03-29 2019-12-13 南京市仪器仪表工业供销有限公司 一种水质在线监测液位触发装置
CN111141919B (zh) * 2019-12-23 2021-04-09 苏州长光华医生物医学工程有限公司 用于化学发光免疫分析仪的试剂液面高度检测方法和装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2581997Y (zh) * 2002-09-16 2003-10-22 胜利油田龙发工贸有限责任公司 水质在线分析仪潜水式采样泵
US20080289402A1 (en) * 2005-11-14 2008-11-27 Sudhir Chowdhury Method for Monitoring Water Quality
CN202018456U (zh) * 2010-10-09 2011-10-26 中国神华能源股份有限公司 水样采样杯及包括该采样杯的水质检测系统
CN102692931A (zh) * 2012-06-06 2012-09-26 李茂华 隧道消防高位水池液位监控系统及监控方法
CN205193064U (zh) * 2015-12-16 2016-04-27 成都峰占科技有限公司 水质在线监测仪器的远程监控装置及水质在线监测系统
CN205593999U (zh) * 2016-04-28 2016-09-21 邓小文 一种水质监测装置
CN209132449U (zh) * 2018-10-12 2019-07-19 天津大学 一种自动降雨量监测记录及雨水采样装置
CN112147350A (zh) * 2020-08-25 2020-12-29 力合科技（湖南）股份有限公司 一种液位监测装置、取样监测方法

Cited By (3)

* Cited by examiner, † Cited by third party
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CN109974808A (zh) * 2017-12-27 2019-07-05 核动力运行研究所 一种乏燃料水池自补偿式液位测量系统
CN109974808B (zh) * 2017-12-27 2024-03-19 核动力运行研究所 一种乏燃料水池自补偿式液位测量系统
CN116841235A (zh) * 2023-07-03 2023-10-03 小鲲智能技术(广州)有限公司 用于污水处理的药剂管理系统及管理方法

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