CN206906361U - A kind of industrial circulating water cultivating monitoring water quality on line system - Google Patents
A kind of industrial circulating water cultivating monitoring water quality on line system Download PDFInfo
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- CN206906361U CN206906361U CN201720369362.7U CN201720369362U CN206906361U CN 206906361 U CN206906361 U CN 206906361U CN 201720369362 U CN201720369362 U CN 201720369362U CN 206906361 U CN206906361 U CN 206906361U
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Abstract
The utility model discloses a kind of industrial circulating water cultivating monitoring water quality on line system, solves the defects of prior art, including lower computer acquisition controller module and host computer server end；Lower computer acquisition controller module includes integrated water quality sensor module and acquisition controller module；Water quality sensor module includes dissolved oxygen analytic instrument, thermohaline instrument, PH measuring instruments and nh 3-n analyser, is electrically connected with acquisition controller module, by the information transfer of dissolved oxygen analytic instrument, thermohaline instrument, PH measuring instruments and nh 3-n analyser collection to acquisition controller module.Host computer server end, communicated to connect with lower computer acquisition controller module, real-time display is carried out to the data for integrating the collection of water quality sensor module.A variety of detection devices are integrated together by the utility model, and unified transmission is carried out to gathering the signal come, more accurate comprehensive offer water monitoring data.
Description
Technical field
The utility model belongs to water quality monitoring field, and in particular to a kind of industrial circulating water cultivating monitoring water quality on line system
System.
Background technology
As China's fishery is just marching toward the critical period of structural adjustment, important composition portion of the culture fishery as fishery
Point, just from traditional extensive style stocking model progressively to batch production, intensive culture mode development.Industrialized aquiculture this
The change of breeding way attracts people's attention in the effect for improving yield, reducing energy consumption and saving water source etc. acquirement, intelligent,
The industrialization aquaculture garden of the cultural technique content of automation is as one of developing direction of various countries' culture fishery.
China Patent Publication No. CN103728429A, publication date on April 16th, 2014, the entitled water quality of innovation and creation
On-line monitoring method and monitoring system, the disclosure of the invention a kind of water quality on-line detection method and monitoring system, mainly including
One detection pattern and the second detection pattern, there is provided the solution of Monitoring Data reliability in a set of monitoring water quality on line, realize
Increase water quality the accurate pre-alerting ability of monitoring accident.Its weak point is no more comprehensive water quality measurement ability,
The acute variation problem of water quality when can not tackle water circulation in industrial circulating water cultivating monitoring water quality on line system.
Utility model content
The purpose of this utility model is to solve the low integrated problem in above-mentioned prior art, there is provided it is a set of can be simultaneously
Monitor the on-line monitoring system of Dissolved Oxygen in Water content, temperature, pH value, salinity and ammonia-nitrogen content.
Technical scheme is used by the utility model solves its technical problem：A kind of industrial circulating water cultivating water quality exists
Line monitoring system, it is characterised in that including host computer server end and lower computer acquisition controller module, host computer server
End, communicated to connect with lower computer acquisition controller module, receive the data that lower computer acquisition controller module collects, and preserve
And display；
Lower computer acquisition controller module includes integrated water quality sensor module and acquisition controller module；
Integrated water quality sensor module, including dissolved oxygen analytic instrument, thermohaline instrument, PH measuring instruments and nh 3-n analyser；
The dissolved oxygen analytic instrument, Dissolved Oxygen in Water concentration is gathered, is electrically connected with acquisition controller module；
The thermohaline instrument, collection water body electrical conductivity, temperature, salinity and depth, is electrically connected with acquisition controller module；
The PH measuring instruments, water PH value is gathered, is electrically connected with acquisition controller module；
The nh 3-n analyser, water body ammonia-nitrogen content is gathered, is electrically connected with acquisition controller module；
The integrated water quality sensor module, it will be adopted in dissolved oxygen analytic instrument, thermohaline instrument, PH Acquisition Instruments and nh 3-n analyser
The information transfer collected is to acquisition controller module.
The utility model, a variety of detection devices are integrated together by integrated water quality sensor module, to gathering the signal come
Uniform transmission is carried out, more accurate comprehensive offer water monitoring data.Removed dissolved oxygen analytic instrument, thermohaline instrument, PH Acquisition Instruments
Beyond nh 3-n analyser, also other detection devices can be added according to being actually needed.The integrated water quality sensor module collection
Data by acquisition controller module transfer to user's receiving terminal, user's receiving terminal can the water that comes of real time inspection collection
Quality supervision measurement information.
Preferably, the acquisition controller module, it is characterised in that including：
Communication unit, data are transmitted, communicated to connect with host computer server end；
Display unit, display data, electrically connected with control unit；
Data processing unit, the data of collection are handled, electrically connected with data storage element, control unit and water quality sensor
Module electrically connects；
Data storage element, data are stored, are electrically connected with data processing unit and control unit；
Clock unit, for timing, electrically connected with control unit；
Control unit, the control data acquisition of water quality sensor module, the data manipulation of data processing unit, communication unit
Data transfer, and host computer server end communication connection.
Preferably, using cable network, network router one end electrically connects with host computer server end, and the other end is with adopting
The communication unit of collection controller module is electrically connected, cable-network transmission data stabilization, quick, and embodiment more preferably realizes infield
Flexibility.
The utility model, wireless network also can be selected.
Preferably, the instrument used in the integrated water quality sensor module includes thermohaline instrument, dissolved oxygen, ammonia nitrogen analysis
Instrument and PH measuring instruments, thermohaline instrument, dissolved oxygen, nh 3-n analyser and PH measuring instruments and acquisition controller module are electrically connected；Data are adopted
Gathered with by thermohaline instrument, dissolved oxygen, nh 3-n analyser and PH measuring instruments.The data collected include;Measure water temperature, salt
Degree, depth, dissolved oxygen, ammonia-nitrogen content, pH value and underwater picture, and the voltage of system, system time.
Preferably, the main control chip of described control unit is STM32F405RG chips.Main control part uses
MCU of the STM32F405RGT6 chips as system, the chip are a 32 high performance MCU.Chip uses 1.8V-3.6V
Power voltage supply.Chip uses 16 reduced instruction set computers, and there are internal system multiple clock sources to reach as high as 168MHz.Chip-stored
Space has greatly 1024K FLASH, 192K RAM.I/O resource is abundant to have 51 general purpose I/Os.Resources on Chip enriches：6 internal strings
Row communication interface supports UART, more kinds of serial communication modes of SPI, I2C, 12 ADC of 16 passages, supports the hard of 32 bit manipulations
Part multiplier.It can ensure big data quantity acquisition process and transmitting of the system in Long time scale using the chip.
Before the utility model, generally led from MSP430 chips as control chip, but due to the capacity limit of chip
Many systemic-functions are caused to realize.MSP430 chips are substituted for from STM32F407ZET6 chips, in memory capacity and processing
There is very big lifting in the speed of data, systemic-function is obtained expanding and realized.
Preferably, described lower computer acquisition controller module is additionally included in line observed terminals collector, it is described
Line observed terminals collector includes 4 control buttons, control list of the described control button with the acquisition controller module
Member electrical connection, described control button is film key.The key part of system is mainly by four buttons in front panel
Composition, it is to wake up key, data upturning key, data downturning key, closing screen key respectively.The wake-up key is used for system from low work(
Waken up under consumption resting state, only user can just see the data shown on LCD interfaces in the awake state；Button is turned in data
It is used for button is turned under data when display data is more, interface display can be switched；Screen close key is used to check data
Afterwards, press this key to extinguish screen, reduce power consumption, this four buttons are film keys, and system is both saved using film key
Space, simplifies the production and assembly process of system, while also add the reliability of whole system.
Preferably, display unit 6 is using LCD very color 10 cun of TFT.The LCD is powered using 3.3V.Liquid crystal display
The working condition of the working condition of one page display system and each instrument, second page and page three display dissolved oxygen, temperature, PH,
Salinity, ammonia-nitrogen content, system voltage value, system temperature value, time value and site number.
Preferably, data storage cell is 16G SD storage cards.Storage card is powered using 3.3V, SPI communication side
Formula forms master-slave communication with main control unit.After data acquisition, data acquisition unit automatically can protect the data of this transmission
Exist in SD card.The card insertion convenient take out at any time on SD card seat reads wherein data.Held according to existing data volume and SD card
Amount, which calculates the card storage data quantity, can reach 10 years.
Preferably, the host computer server-side portion of the system is B/S frameworks.Lower computer acquisition controller module gathers
To data issue host computer server end, host computer server end can be saved the data in database, and client can pass through
Server is directly viewable data, can also check real time data by accessing named web page, webpage can be shown often in other places
Rule numerical value is shown and curve is shown.Client can also be exported historical data into form, be facilitated data with enquiry of historical data
Stay shelves.
Preferably, the lower computer acquisition controller module, in addition to underwater feed dispenser, with the electric power system
Electrically connected with control unit, underwater feed dispenser is a cylinder, and shell is waterproof layer, and inside is a cavity, cavity
In be provided with feed chamber fitted and dividing plate, dividing plate is abutted with shell, and conduit is provided with feed chamber fitted；Conveying chamber is cylinder, and side wall opens up
There is the opening with feed chamber fitted and delivery pipe connection；The axial cross section of delivery pipe is circle, is offered in the side wall of delivery pipe some
Individual opening obliquely；Pressure apparatus is electrically connected with electric power system, and pressure apparatus is fitted close with protective layer；Diaphragm is latticed
Flexure strip, the aperture of the grid and the volume of single feed match, and the outer rim of diaphragm is fixed on the lower port of conveying chamber
Inwall on.The feed that this device is applicable to underwater environment is launched, and realizes that water proof launches feed.
Preferably, the lower computer acquisition controller module, in addition to feed dispenser waterborne, with the electric power system
Electrically connected with control unit, feed dispenser waterborne is a cylinder, and shell is waterproof layer, and inside is a cavity, cavity
In be provided with feed chamber fitted, conveying chamber and dividing plate, the outer rim of dividing plate is abutted with shell, and conduit is provided with feed chamber fitted；Conveying chamber lower end
Mouth is provided with electrically operated valve, and electrically operated valve electrically connects with the electric power system and control unit, and electrically operated valve is close with waterproof layer
It is be hinged.
The beneficial effects of the utility model：（1）Thermohaline instrument, dissolved oxygen, nh 3-n analyser and PH measuring instruments are added, will be more
Kind detection device is integrated together, and uniform transmission is carried out to the signal of collection, more accurate comprehensive offer meteorological measuring.
（2）Slave computer acquisition control machine module includes online observed terminals collector, and online observation terminal collector is pressed including 4 controls
Key, extinguish for system to be waken up to, switched interface display and screen under Low-power-consumptiodormancy dormancy state, reduce power consumption；Control is pressed
Key is that film key both saves system space using film key, simplifies the production and assembly process of system, while is also increased
The reliability of whole system is added.（3）Host computer server-side portion is B/S structures, can be checked in server and access webpage
Real time data, can enquiry of historical data and export historical data, facilitate data to stay shelves, data it is real-time.
Brief description of the drawings
Fig. 1 is a kind of a kind of block diagram of industrial circulating water cultivating monitoring water quality on line system；
Fig. 2 is a kind of schematic diagram of industrial circulating water cultivating monitoring water quality on line system installation system
Fig. 3 is a kind of industrial circulating water cultivating monitoring water quality on line system long-wave signal process circuit figure
Fig. 4 is a kind of industrial circulating water cultivating monitoring water quality on line system short-wave signal process circuit figure
Fig. 5 is a kind of a kind of underwater feed dispenser motion structure of industrial circulating water cultivating monitoring water quality on line system
Schematic diagram
Fig. 6 is a kind of a kind of feed dispenser structural representation waterborne of industrial circulating water cultivating monitoring water quality on line system
Figure
In figure：1st, electric power system, 2, dissolved oxygen analytic instrument, 3, thermohaline instrument, 4, PH Acquisition Instruments, 5, nh 3-n analyser, 6, aobvious
Show unit, 7, data processing unit, 8, data storage element, 9, clock unit, 10, control unit, 11, communication unit, 12,
Line terminal collector, 13, cable network, 14 host computer server ends, 15, conduit, 16, feed chamber fitted, 17, conveying chamber, 18, waterproof
Layer, 19, diaphragm, 20, pressure apparatus, 21, delivery pipe, 22, electrically operated valve, 23, protective layer.
Embodiment
Embodiment 1：
A kind of industrial circulating water cultivating monitoring water quality on line system, including lower computer acquisition controller module and host computer
Server end；Lower computer acquisition controller module includes integrated water quality sensor module, acquisition controller module and online observation
Terminal collector；Integrated water quality sensor module, including dissolved oxygen analytic instrument 2, thermohaline instrument 3, PH Acquisition Instruments 4 and nh 3-n analyser
5；The dissolved oxygen analytic instrument 2, gather dissolved oxygen information；The thermohaline instrument 3, collection water body electrical conductivity, temperature, salinity and depth
Degree；The PH Acquisition Instruments 4, gather water PH value information；The nh 3-n analyser 5, gather ammonia-nitrogen content information；The integrated water
Matter sensor assembly, electrically connected with acquisition controller module, by dissolved oxygen analytic instrument 2, thermohaline instrument 3, PH Acquisition Instruments 4 and ammonia nitrogen point
The information transfer that analyzer 5 gathers is to acquisition controller module；Cable network 13 connects host computer server end 14 and acquisition control
Device module；Host computer server end 14 carries out real-time display to the data for integrating the collection of water quality sensor module.
The acquisition controller module, including display unit 6, data processing unit 7, data storage element 8, clock unit
9th, control unit 10 and communication unit 11；It is described to show unit 6, data processing unit 7, data storage element 8, the and of clock unit 9
Communication unit 11 electrically connects with control unit 10；Integrated water quality sensor module electrically connects with data processing unit 7；Communication unit
Member 11 electrically connects with cable network 13；The cable network 13 uses network router, network router one end and communication unit
11 electrical connections, one end electrically connects with host computer server end 14；Described control unit 10 is STM32F405RG chips.
The data processing unit 7 includes filter unit, and the filter unit includes long-wave signal process circuit, long wave letter
Number process circuit input electrically connects with integrated water quality sensor, and output end electrically connects with data processing unit, the long wave letter
Number process circuit input electrically connects with integrated water quality sensor, obtains long wave analog signal, and long wave analog signal passes through resistance
R8 is input to operational amplifier IC8Aopa2333 in-phase input ends, and resistance R8 first ends are grounded by electric capacity C20, resistance R8
Two ends are grounded by electric capacity C21；Operational amplifier IC8Aopa2333 inverting inputs are grounded by resistance R14；Resistance R11
One end concatenation operation amplifier IC8Aopa2333 inverting inputs, resistance R11 the second end concatenation operation amplifiers
IC8Aopa2333 output ends；Operational amplifier IC8Aopa2333 output ends are connected with resistance R9 first ends；The ends of resistance R9 second
By connecting after the mu balanced circuit that is made up of voltage-regulator diode and electric capacity C22 with operational amplifier IC16Aopa2333 in-phase input ends
Connect；Operational amplifier IC16Aopa2333 inverting inputs are grounded by resistance R53；The concatenation operation of resistance R52 first ends is amplified
Device IC16Aopa2333 inverting inputs, resistance R52 the second end concatenation operation amplifier IC16Aopa2333 output ends；Resistance
R46 first end concatenation operation amplifier IC16Aopa2333 output ends, the ends of resistance R46 second connection electric capacity C48 ground connection；Long wave is believed
Number process circuit output end electrically connects with data processing unit 7.
The filter unit also includes short-wave signal process circuit, and short-wave signal process circuit input passes with integrated water quality
Sensor electrically connects, and output end electrically connects with data processing unit 7, the short-wave signal processing input and integrated water quality sensor
Electrical connection, obtains short wave analog signal, and short wave analog signal is input to the same phases of operational amplifier IC8BNE5532 by resistance R16
Input, resistance R16 first ends are grounded by electric capacity C27, and the second end is grounded by electric capacity C28；Operational amplifier
IC8BNE5532 inverting inputs are grounded by resistance R20；Resistance R19 first end concatenation operation amplifiers IC8BNE5532 is anti-phase
Input, resistance R19 the second end concatenation operation amplifier IC8BNE5532 output ends；Operational amplifier IC8BNE5532 output ends
Be connected with resistance R17 first ends, the ends of resistance R17 second by after the mu balanced circuit that is made up of voltage-regulator diode and electric capacity C29 with
Operational amplifier IC16Bopa2333 in-phase input ends connect；Operational amplifier IC16Bopa2333 inverting inputs pass through resistance
R55 is grounded；Resistance R54 first end concatenation operation amplifier IC16Bopa2333 inverting inputs, the ends of resistance R54 second connection fortune
Calculate amplifier IC16Bopa2333 output ends；Resistance R47 first end concatenation operation amplifier IC16Bopa2333 output ends, resistance
The ends of R47 second connection electric capacity C50 ground connection；Short-wave signal process circuit output end electrically connects with data processing unit 7.
The lower computer acquisition controller module, in addition to warning system, warning system one end are electrically connected with display unit 6
Connecing, the other end electrically connects with control unit 10, and warning system is used for the water body data that water quality sensor is gathered and reaches exceptional value,
Alarm is sent, water body data reach arm's length standard, and alarm eliminates；Alerting process is shown in display unit 6.
The lower computer acquisition controller module, in addition to flow control system, flow control system include flow measurement
Instrument, flowmeter one end electrically connect with electric power system 1, and the other end electrically connects with control unit 10, flowmeter collection water
Body flow information, water flow is controlled according to the water flow information of collection.
The lower computer acquisition controller module, in addition to urgent system of getting rid of the danger, system of promptly getting rid of the danger one end and power supply system
The electrical connection of system 1, one end electrically connect with control unit 10, and system of promptly getting rid of the danger is used for what is collected in integrated water quality sensor module
During data exception, water body is filtered, is purified water.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, and difference is：
The lower computer acquisition controller module, in addition to underwater feed dispenser, underwater feed dispenser one end is with supplying
Electric system 1 electrically connects, and one end electrically connects with control unit 10；Feed is stored in feed chamber fitted 16 by conduit 15；Conveying chamber 17
There are several openings connected with delivery pipe 21 in side wall；Have in delivery pipe 21 in several openings obliquely and conveying chamber 17
Opening, which is fitted close, is used for feed entrance, and feed enters delivery pipe 21 by the opening of the opening in conveying chamber 17 and delivery pipe 21
It is interior；Pressure apparatus 20 electrically connects with control unit 10, and for pushing delivery pipe 21, pressure apparatus 20 is provided with protective layer 23, protects
Sheath 23 is fitted close waterproof layer 18 with conveying chamber interior walls and is used for feed dispenser and water body under exclusion of water；Diaphragm 19 is used to prevent
Underwater feed dispenser water inlet, diaphragm 19 is opened when reaching setup pressure value, and delivery pipe 21 is pushed into water body by pressure apparatus 20,
Launch feed.
Embodiment 3：
The present embodiment and embodiment 1 and embodiment 2 are essentially identical, and difference is：
The lower computer acquisition controller module, in addition to feed dispenser waterborne, feed dispenser one end waterborne is with supplying
Electric system 1 electrically connects, and one end electrically connects with control unit 10；Feed is stored in feed chamber fitted 16 and conveying chamber 17 by conduit 15；
Waterproof layer 18 is used to prevent water from entering feed dispenser waterborne；Conveying chamber lower port is provided with electrically operated valve 22, electrically operated valve 22
One end electrically connects with electric power system 1, and one end electrically connects with control unit 10, and electrically operated valve 22 launches feed after opening.
Embodiment described above is a kind of preferred version of the present utility model, not makees any shape to the utility model
Limitation in formula, there are other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (5)
- A kind of 1. industrial circulating water cultivating monitoring water quality on line system, it is characterised in that including：Host computer server end, receive the data that lower computer acquisition controller module collects and preserve and show, with slave computer Acquisition controller module communicates to connect；Lower computer acquisition controller module, collection site data are simultaneously collected to data, handle, store, show and transmitted, with Host computer server end communicates to connect；Lower computer acquisition controller module includes：Integrated water quality sensor module, the letter that will be collected in dissolved oxygen analytic instrument, thermohaline instrument, PH Acquisition Instruments and nh 3-n analyser Breath is transferred to acquisition controller module；Acquisition controller module, to the data processing of collection, storage, display and transmission, control integrated water quality sensor module；Integrated water quality sensor module includes：Dissolved oxygen analytic instrument, Dissolved Oxygen in Water concentration is gathered, is electrically connected with acquisition controller module；Thermohaline instrument, collection water body electrical conductivity, temperature, salinity and depth, is electrically connected with acquisition controller module；PH measuring instruments, water PH value is gathered, is electrically connected with acquisition controller module；Nh 3-n analyser, water body ammonia-nitrogen content is gathered, is electrically connected with acquisition controller module.
- 2. a kind of industrial circulating water cultivating monitoring water quality on line system according to claim 1, it is characterised in that described Acquisition controller module, including：Communication unit, data are transmitted, communicated to connect with host computer server end；Display unit, display data, electrically connected with control unit；Data processing unit, the data of collection are handled, electrically connected with data storage element, control unit and water quality sensor module Electrical connection；Data storage element, data are stored, are electrically connected with data processing unit and control unit；Clock unit, for timing, electrically connected with control unit；Control unit, the control data acquisition of water quality sensor module, the data manipulation of data processing unit, the number of communication unit Communicated to connect according to transmission, and host computer server end.
- 3. a kind of industrial circulating water cultivating monitoring water quality on line system according to claim 1, it is characterised in that described Lower computer acquisition controller module, in addition to：Online observation terminal collector, is electrically connected with the control unit of acquisition controller module；Online observation terminal collector, including 4 control buttons, for controlling online observation terminal collector, with the control The described control button of unit electrical connection is film key.
- 4. a kind of industrial circulating water cultivating monitoring water quality on line system according to claim 2, it is characterised in that described Acquisition controller module is used for the communication connection of host computer server end using cable network, network router and acquisition controller Communication unit and the electrical connection of host computer server end, the network router are used to connect network and conducting networks information.
- 5. a kind of industrial circulating water cultivating monitoring water quality on line system according to claim 2, it is characterised in that described Data processing unit, including long-wave signal process circuit, long-wave signal process circuit input are electrically connected with integrated water quality sensor Connect, output end electrically connects with data processing unit, and the long-wave signal process circuit input is electrically connected with integrated water quality sensor Connect, obtain long wave analog signal, long wave analog signal is input to operational amplifier IC8Aopa2333 homophase inputs by resistance R8 End, resistance R8 first ends are grounded by electric capacity C20, and the ends of resistance R8 second are grounded by electric capacity C21；Operational amplifier IC8Aopa2333 inverting inputs are grounded by resistance R14；Resistance R11 first end concatenation operation amplifiers IC8Aopa2333 is anti- Phase input, resistance R11 the second end concatenation operation amplifier IC8Aopa2333 output ends；Operational amplifier IC8Aopa2333 is defeated Go out end to be connected with resistance R9 first ends；The ends of resistance R9 second pass through after the mu balanced circuit that is made up of voltage-regulator diode and electric capacity C22 It is connected with operational amplifier IC16Aopa2333 in-phase input ends；Operational amplifier IC16Aopa2333 inverting inputs pass through electricity Hinder R53 ground connection；Resistance R52 first end concatenation operation amplifier IC16Aopa2333 inverting inputs, the connection of the ends of resistance R52 second Operational amplifier IC16Aopa2333 output ends；Resistance R46 first end concatenation operation amplifier IC16Aopa2333 output ends, electricity Hinder the ends of R46 second connection electric capacity C48 ground connection；Long-wave signal process circuit output end electrically connects with data processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720369362.7U CN206906361U (en) | 2017-04-10 | 2017-04-10 | A kind of industrial circulating water cultivating monitoring water quality on line system |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201720369362.7U CN206906361U (en) | 2017-04-10 | 2017-04-10 | A kind of industrial circulating water cultivating monitoring water quality on line system |
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| CN206906361U true CN206906361U (en) | 2018-01-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683433A (en) * | 2018-03-16 | 2018-10-19 | 西北工业大学 | A kind of submarine navigation device multipurpose radio communication device |
| CN110632272A (en) * | 2019-11-01 | 2019-12-31 | 佛山市鼎科科技发展有限公司 | Water quality monitoring system for sewage treatment |
-
2017
- 2017-04-10 CN CN201720369362.7U patent/CN206906361U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683433A (en) * | 2018-03-16 | 2018-10-19 | 西北工业大学 | A kind of submarine navigation device multipurpose radio communication device |
| CN110632272A (en) * | 2019-11-01 | 2019-12-31 | 佛山市鼎科科技发展有限公司 | Water quality monitoring system for sewage treatment |
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