CN104698933A - Single-chip microprocessor-based water sampler control system - Google Patents
Single-chip microprocessor-based water sampler control system Download PDFInfo
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- CN104698933A CN104698933A CN201510086530.7A CN201510086530A CN104698933A CN 104698933 A CN104698933 A CN 104698933A CN 201510086530 A CN201510086530 A CN 201510086530A CN 104698933 A CN104698933 A CN 104698933A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2622—Press
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- General Physics & Mathematics (AREA)
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- Automation & Control Theory (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a design of a layered water sampler control system. According to the control system, a single-chip microprocessor is used as a control core, a pressure sensor is used for sensing water depth and pressure, and sensor information is acquired by a data acquisition unit and is stored; switch-on of an electromagnetic valve is controlled through an electromagnetic valve drive circuit, and a sampling bottle is triggered to be closed. According to the entire system, an accumulator used for supplying power, power is provided for each module through a power management unit, and before and after sampling, a wireless communication module is used for receiving and transmitting data. Water sampling on a surface layer, a middle layer and a bottom layer can be finished at one time, so the sampling efficiency is improved; a step of connecting a cable during use is avoided by transmitting data with a wireless communication module, and the sampling precision is improved by arranging the pressure sensor; the entire system is low in manufacturing cost and has a higher economic value.
Description
Technical field
The present invention relates to a kind of control system for underwater water sample harvester, be applicable to the layering collection carrying out water sample with the use of pressed cover hydrophore.
Background technology
Along with developing rapidly of industry, water pollution problems is day by day serious.Therefore, water quality monitoring becomes one of important process of numerous environmentalist.Wherein, water sampling is then the basic link carrying out Study of Water Environment and improvement.Fully understand water environment, usually need the vertical distribution information obtaining water body indices, so just need vertical demixing sampling water body being carried out to section.
At present, the hydrophore such as Nice gold, Huo Sijin uses water sampling instrument comparatively widely.When sampling, needing to use hawser manually to transfer, discharging weight from the water surface again when hydrophore is transferred and reached predetermined sampling depth, triggering sampling bottle and close.There is following shortcoming in the course of the work in it.First, at least need during sampling to carry out top layer, middle level and bottom water sampling, workload is huge, and intricate operation when using single sampling bottle, needs the human and material resources of at substantial.In addition; hydrophore needs winch cooperation to transfer usually; its degree of depth is then according to the degree of depth that wire rope declines; but in actual working environment, hydrophore can drift about due to effects such as current usually, causes wire rope run-off the straight; at this moment sampling precision is difficult to ensure; sometimes hydrophore tilts excessive, the phenomenon that weight cannot trigger hydrophore cut out also can occur, cannot complete water sampling smoothly.Pump suction type is another kind of comparatively conventional water sampling mode, but in sampling process, the floccus form in water body is easily damaged, and cannot ensure the home state of sample, brings difficulty to follow-up water body index determining.
CTD sunflower formula hydrophore is a kind of conventional water sample acquisition device, and it can measure water quality parameter while collection water sample, but it needs to use motor to drive sampling bottle to close, and power demand is higher, and power consumption is comparatively large, and price is very expensive.Oceanographic Inst. No.1 of State Bureau of Oceanography is in " electric water sampling device " of application in 2005, it before sampling, the rear sampling bottle that all can keep is in closed condition, can keep water sample pollution-free, do not reveal, not by the impact of biological attachment, but its in use need cable carry out under water with electrical connection waterborne, use comparatively inconvenience; The Institute of Oceanology of the Chinese Academy of Sciences is in the patent " a kind of self-recovery type water sampler control device " of application in 2006, it does not need to use hawser, do not need to use cable just can complete the AUTOMATIC ZONING collection of water sample yet, but it still needs stube cable to carry out the transmission of depth data before sampling, and be provided by hydrophore natural buoyancy owing to returning, hydrophore home position is also uncertain, not easily reclaims hydrophore when carrying out sampling in winter in reservoir waters.
Summary of the invention
In order to solve the problem, the invention provides a kind of SCM Based hydrophore control system, Nice gold can be coordinated to wait hydrophore to use, improve sampling precision, complete the AUTOMATIC ZONING collection of water sample.
For achieving the above object, the present invention is by the following technical solutions:
A kind of SCM Based hydrophore control system, comprises single-chip microcomputer, data storage cell Power Management Unit, driving circuit for electromagnetic valve, wireless communication module, solenoid valve, driving circuit for electromagnetic valve, pressure transducer, A/D converting unit; Single-chip microcomputer is control core, and system input is connected with pressure transducer, by A/D converting unit by information acquisition in single-chip microcomputer, single-chip microcomputer saves the data in data storage cell again.The output terminal connected electromagnetic valve driving circuit of system, each driving circuit for electromagnetic valve is made up of optocoupler, triode, diode and relay, has three, controls three solenoid valves respectively.Three solenoid valves control corresponding sampling bottle respectively and cut out.
Described hydrophore control system is powered through Power Management Unit by accumulator or dry cell, Power Management Unit comprises boost module and voltage reduction module, power supply gives pressure transducer, solenoid valve after boosting, after step-down, give single-chip microcomputer, A/D converting unit, data storage cell, driving circuit for electromagnetic valve and wireless communication module power supply.Described pressure transducer output terminal is connected with the analog input end of A/D converting unit, and the output port of A/D converting unit is connected with single-chip microcomputer with control port.
Single chip communication serial ports is connected with wireless communication module, and single-chip microcomputer can carry out exchanges data by its mode of operation of control and the external world.
The present invention has following beneficial effect:
1. control system is furnished with three driving circuit for electromagnetic valve, when sampling, can be equipped with three sampling bottles and gathering, disposable can complete water body top layer, middle level and bottom water sampling, without the need to human intervention in sampling process, save human and material resources, improve sampling efficiency;
2. control system is equipped with pressure transducer and carries out position finding, thus the coarse problem of sampling depth avoiding surrounding environment interference and cause, improve sampling precision;
3. control system outfit wireless communication module and the external world carry out data interaction, do not need to use cable to carry out the work such as data transmission in use procedure;
4. cost of the present invention is lower.
Accompanying drawing illustrates:
1. Fig. 1 is control system one-piece construction schematic diagram
2. Fig. 2 is control system circuit theory diagrams
3. Fig. 3 is collocation sampling bottle use schematic diagram
Wherein 1 is pressure transducer, and 2 is sampling bottle trigger mechanism, and 3 is sampling bottle, and 4 is pressurized capsule
4. Fig. 4 is control program process flow diagram
Concrete enforcement:
The present invention is to improve sampling precision and efficiency and the hydrophore control system used.As shown in Figure 1, control system core is single-chip microcomputer U1, system input Bonding pressure sensor, and U1 gathers pressure sensor information by A/D converting unit U2, and information is stored in data storage cell U3.System can use accumulator or dry cell to power, and the boost module U4 in Power Management Unit and voltage reduction module U5 powers.System output connects three solenoid valves triggering sampling bottle and close, and U1 is by driving circuit for electromagnetic valve Controlling solenoid valve " switching ".Single chip communication serial ports is connected with wireless communication module simultaneously, thus can carry out information interaction with the external world.
As shown in Figure 2, in the present embodiment, the model of the single-chip microcomputer U1 selected is STC89C52, its signal source of clock is supplied by external crystal-controlled oscillation, crystal oscillator frequency is 11.0592MHz, U1 gathers the information of pressure transducer by A/D converting unit U2, U2 is chosen for TLC2543, its analog input termination pressure transducer exports (0 ~ 5V voltage signal), probe power voltage is 24v, the control port of U2 is connected with single-chip microcomputer P1.3 ~ P1.7 with FPDP, and U1 is stored in after collecting data in data storage cell U3 (AT24C64).
As shown in Figure 2, the present embodiment adopts 12V accumulator to system power supply, and power supply is powered to modules through Power Management Unit.Power Management Unit comprises boost module U4 and voltage reduction module U5, U4 chooses TPS61175,12V supply voltage is elevated to 24V to pressure transducer and solenoid valve, U5 selects TPS767D301 that supply voltage is down to 5v, and its 5V exports to single-chip microcomputer, A/D modular converter U2, data storage cell U3, driving circuit for electromagnetic valve and external wireless communication module power supply.
As shown in Figure 2; driving circuit for electromagnetic valve has optocoupler to isolate by input end; protection single-chip microcomputer normally works; relay (J1 ~ J3) conducting is driven by triode (Q1 ~ Q3); a relay input end diode (1N4007) in parallel, the inverse electromotive force produced after can preventing relay breakpoint disturbs.Relay output end has three contacts, and normally closed contact 4, common 2 and normally opened contact 5,2 and 4 connect solenoid valve two ends, and 4 are connected with ground end simultaneously, and 5 are connected with the output terminal+24v of TPS61175.
As shown in Figure 3, the detailed process that control system controls the closedown of electromagnetism triggering sampling bottle is as follows, single-chip microcomputer U1 controls mouth (P1.0 ~ P1.3) and sends control command " low level ", optocoupler conducting, the ground level of triode is connected to+5v voltage turn-on, relay negative input end 3 holds conducting with ground, relay conducting, its common and normally closed contact disconnect, and be connected with normally opened contact, solenoid valves adhesive, its dynamic iron core moves downward under suction, be with the iron pin be dynamically connected to move downward and discharge the circle cover be hung on iron pin, sampling bottle is closed automatically, collect water sample.
As shown in Figure 2, microcontroller serial port (P3.0 ~ P3.3) external wireless communication module (SV651) in the present embodiment, before sampling, P3.2 sends " low level ", the configuration feature of enabled wireless communication module, then single-chip microcomputer configures wireless communication module by P3.1 (TXD) is receiving mode, host computer PC serial ports connects an identical wireless communication module, staff sends sampling depth data from PC, after being sent completely, single-chip microcomputer reads out depth data and is kept in single-chip microcomputer internal memory from coupled wireless communication module; In sampling process, single-chip microcomputer pin P3.3 sends low level makes wireless communication module be in dormant state; After having sampled, single-chip microcomputer P3.2 sends " low level ", and be then emission state by serial ports configuration wireless communication module, single-chip microcomputer sense data being sent in host computer by wireless communication module from AT24C64, so that staff's observation.
The specific works process of control system collocation sampling bottle is as follows.Before sampling, sampling bottle is affiliated to the trigger mechanism in control system pressurized capsule outside.Host computer PC serial ports connects a wireless communication module, the data that will gather from host computer input are also sent to the wireless communication module of connection by serial ports, wireless communication module can transfer data to the wireless communication module be connected with control system in closed cabin, single-chip microcomputer U1 reads the required depth data gathered by serial ports, and is kept in the inner ROM of single-chip microcomputer.At the uniform velocity hydrophore is transferred by hawser, in decentralization process, single-chip microcomputer U1 gathers pressure sensor information by data acquisition unit U2, and compares with the sampling depth preset received before this, after hydrophore arrives predetermined depth, Single-chip Controlling mouth (P1.0 ~ P1.2) sends control command, drive solenoid valve conduction, close first sampling bottle, continue to transfer hydrophore, until three sampling bottle Close Alls, so collect the water sample of top layer, middle level and bottom.
The present invention is collocation Nice gold urn, Huo Si gold urn or other control system based on the sampling bottle of open and close type principle, control system can be affiliated to three sampling bottles simultaneously, disposablely can obtain the water body sample that top layer, middle level and bottom are representative, substantially increase sampling efficiency, during sampling, also can different sampling depths be set as the case may be.Control system before sampling, is received the sampling depth data of host computer PC transmission, avoids the use of cable by wireless communication module.Use pressure transducer to measure the depth of water position of hydrophore in sampling process, improve sampling precision, make the sample collected have more authenticity and representativeness.
Claims (1)
1. a SCM Based hydrophore control system, comprises single-chip microcomputer, data storage cell Power Management Unit, driving circuit for electromagnetic valve, wireless communication module, solenoid valve, driving circuit for electromagnetic valve, pressure transducer, A/D converting unit; It is characterized in that, single-chip microcomputer is control core, and system input is connected with pressure transducer, by A/D converting unit by information acquisition in single-chip microcomputer, single-chip microcomputer saves the data in data storage cell again.The output terminal connected electromagnetic valve driving circuit of system, each driving circuit for electromagnetic valve is made up of optocoupler, triode, diode and relay, Controlling solenoid valve.The corresponding sampling bottle of solenoid control is closed.
Described hydrophore control system is powered through Power Management Unit by accumulator or dry cell, Power Management Unit comprises boost module and voltage reduction module, power supply gives pressure transducer, solenoid valve after boosting, after step-down, give single-chip microcomputer, A/D converting unit, data storage cell, driving circuit for electromagnetic valve and wireless communication module power supply.Described pressure transducer output terminal is connected with the analog input end of A/D converting unit, and the output port of A/D converting unit is connected with single-chip microcomputer with control port;
Single chip communication serial ports is connected with wireless communication module, and single-chip microcomputer carries out exchanges data by its mode of operation of control and the external world.
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| CN201510086530.7A CN104698933A (en) | 2015-02-17 | 2015-02-17 | Single-chip microprocessor-based water sampler control system |
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| CN201510086530.7A CN104698933A (en) | 2015-02-17 | 2015-02-17 | Single-chip microprocessor-based water sampler control system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137021A (en) * | 2015-09-08 | 2015-12-09 | 大连理工大学 | Reservoir multi-parameter water quality vertical dynamic data collecting method |
| CN106017984A (en) * | 2016-05-14 | 2016-10-12 | 上海大学 | Intelligent multi-depth seawater collecting device |
| CN106644597A (en) * | 2016-12-29 | 2017-05-10 | 中山大学 | Water-sampling monitoring system and control method |
| CN107576528A (en) * | 2017-08-10 | 2018-01-12 | 大连理工大学 | A kind of depthkeeping automatic control hydrophore |
| CN107577174A (en) * | 2017-08-10 | 2018-01-12 | 大连理工大学 | A kind of control method based on single-chip microcomputer hydrophore |
| US20190138039A1 (en) * | 2015-12-22 | 2019-05-09 | Jiangyin Huilong Electric Heating Appliance Co., Ltd. | Heater alarm and control module |
| CN110945339A (en) * | 2017-04-18 | 2020-03-31 | 吉奥能源有限公司 | Control device and automatic water sampler comprising same |
| CN111141883A (en) * | 2020-01-16 | 2020-05-12 | 集美大学 | Water sampling system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137021A (en) * | 2015-09-08 | 2015-12-09 | 大连理工大学 | Reservoir multi-parameter water quality vertical dynamic data collecting method |
| US20190138039A1 (en) * | 2015-12-22 | 2019-05-09 | Jiangyin Huilong Electric Heating Appliance Co., Ltd. | Heater alarm and control module |
| US11157027B2 (en) * | 2015-12-22 | 2021-10-26 | Jiangyin Huilong Electric Heating Appliance Co., Ltd. | Heater alarm and control module |
| CN106017984A (en) * | 2016-05-14 | 2016-10-12 | 上海大学 | Intelligent multi-depth seawater collecting device |
| CN106644597A (en) * | 2016-12-29 | 2017-05-10 | 中山大学 | Water-sampling monitoring system and control method |
| CN110945339A (en) * | 2017-04-18 | 2020-03-31 | 吉奥能源有限公司 | Control device and automatic water sampler comprising same |
| CN107576528A (en) * | 2017-08-10 | 2018-01-12 | 大连理工大学 | A kind of depthkeeping automatic control hydrophore |
| CN107577174A (en) * | 2017-08-10 | 2018-01-12 | 大连理工大学 | A kind of control method based on single-chip microcomputer hydrophore |
| CN107576528B (en) * | 2017-08-10 | 2019-05-10 | 大连理工大学 | A kind of depthkeeping automatic control hydrophore |
| CN111141883A (en) * | 2020-01-16 | 2020-05-12 | 集美大学 | Water sampling system |
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