CN203299156U

CN203299156U - PH value monitoring WSN (wireless sensor network) node device for aquaculture

Info

Publication number: CN203299156U
Application number: CN2013202395232U
Authority: CN
Inventors: 张荣标; 钱弼违
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2013-05-06
Filing date: 2013-05-06
Publication date: 2013-11-20
Anticipated expiration: 2023-05-06

Abstract

The utility model discloses a PH value monitoring WSN (wireless sensor network) node device for aquaculture. The node device comprises a sealed floating ball which floats in water of an aquaculture pond. Through a connecting wire, the bottom of the floating ball is fixedly connected with a fixed device which is inserted in the bottom of the pond by a connecting line; the top of the upper half part in the floating ball is provided with a communication antenna, a charge interface and a power switch; the bottom of the lower half part in the floating ball is provided with a circuit board; the lower end of the external of the floating ball is fixed with a filtering hood; the filtering hood is internally provided with an antimony electrode PH value sensor which is immersed in water; an MCU (micro controller unit), a storage battery, all circuits and all modules are integrated on the circuit board. The node device can be used for regularly monitoring a target water area in real time over and over again, so that aquaculturists who are not on the scene can know the dynamic changes of the PH value.

Description

A kind of monitoring of pH value for aquaculture WSN node apparatus

Technical field

The utility model relates to WSN(Radio sensing network) monitoring technology, specifically monitor for the pH value of aquaculture WSNNode apparatus.

Background technology

PH value (being potential of hydrogen) is the important indicator of water quality.In breeding water body, pH value is reflecting the variation of water quality very intuitively, such as whether size and daily variation that the vigor of algae, the existence of carbon dioxide etc. can be by pH values infer in normal scope.The PH value is as the important indicator of fishpond water quality, and it directly or indirectly affects the Growth and reproduction of fish.PH value is 6～9 to the safe range of fish, but the optimum PH of fish growth is 7～8.5, and pH value exceeds certain scope, will directly cause the death of fish.At present, adopt automatic water quality monitoring system monitoring water PH value,, mainly take traditional two-wire system analog transmitter as main, there are the problems such as signal stabilization is poor, cost is high, function singleness, test data hysteresis in the monitoring instrument that automatic monitored control system is used,

Summary of the invention

The purpose of this utility model is mainly to provide a kind of real-time device that detects water PH value fast based on radio sensing network for the defect of the water PH value monitoring technology of existing aquaculture.

For achieving the above object, the utility model for the technical scheme of the pH value monitoring wireless sensing network node device employing of aquaculture is: comprise a ball float that swims in the sealing of aquaculture pond water, the ball float bottom is fixedly connected with the stationary installation of inserting pond bottom by connecting line; The top of the episphere in ball float is provided with communication antenna, charging inlet and power switch, and the bottom of the lower semisphere in ball float is provided with circuit board, and the lower end of ball float outside is filter mantle fixedly, and the antimony electrode pH value sensor that is immersed in water is arranged in filter mantle; On circuit board, be integrated with MCU, accumulator, each circuit and modules, accumulator connects charging inlet and power switch by charging circuit, accumulator connects MCU by power module, power module connects respectively MCU, wireless communication module and filtering and amplifying circuit, wireless communication module connects respectively MCU and communication antenna, MCU also connects A/D modular converter, filtering and amplifying circuit, electric current and voltage modular converter and location slope adjustment module successively, and location slope adjustment module connects antimony electrode pH value sensor.

The utility model is compared with technology with existing method, has following advantage:

1, small and exquisite, the waterproof of the utility model structure, and with low cost, easy to use.

2, the utility model is the antimony electrode sensor because of what select, and electrode is corresponding fast, and the electrode scale removal does not affect measurement, and scale removal is simple, and use cost is low.In a single day pH value exceeds the secure threshold of cultivation when the target waters, meeting is automatic alarm immediately, thereby guarantee the safety of aquaculture, thereby make poultry feeders can not understand at the scene the dynamic change of pH value in situation fully, greatly improved the work efficiency of poultry feeders.

3, the utility model adopts the WSN technology, namely reduced the cost of manpower, has reduced again the trouble of wiring etc., with radio sensing network, is combined and can carries out repeatedly Real-Time Monitoring of timing to the target waters, has very strong real-time.Poultry feeders can real time record target waters the PH instantaneous value and every day the useful information such as pH value variation range.Radio sensing network is based on this RFIC of AX5043, this chip is that the AXSEM of old brand producer of Switzerland researches and develops, and has frequency range wide (70-1050 MHz), sensitivity very high (RX 9.6ma-126 dB m), supports Wireless Ad Hoc Networks, extremely low (received current is 6.5 ~ 9.5mA) to power consumption, the characteristics of the powerful in function such as built-in FEC also.

4, the utility model adopts storage battery power supply, and friendly charging inlet is provided, when obsolete the time, only need to have opened the lid of charging inlet and plug in, just can charge the battery easily, make the working time of device that stronger flying power be arranged.

5, the whole centre of gravity adjustment of the utility model is in the bottom at center, and utilizes the principle of ball float, makes device easily to keep afloat, and the position of antenna is in the top of surface level all the time, guaranteed the good of communication.

The accompanying drawing explanation

Fig. 1 is the use view of a kind of monitoring of pH value for aquaculture WSN node apparatus described in the utility model;

Fig. 2 is the structure enlarged drawing of agent set A in Fig. 1;

Fig. 3 is circuit structure diagram of the present utility model;

The sequence number of each parts and title in accompanying drawing: A. agent set; B. connecting line; C. stationary installation; 1. charging inlet lid; 2. communication antenna; 3. charging inlet and power switch; 4. trough; 5. circuit board; 6. antimony electrode pH value sensor; 7. filter mantle; 8. water-impervious rubber.

Embodiment

Referring to Fig. 1, the utility model comprises agent set A, connecting line B and stationary installation C, and agent set A is a ball float that swims in the sealing in aquaculture pond water, and the weight of the ball float unit volume of sealing, much smaller than water, therefore can easily swim in water.When design, adopt the principle of tumbler, by the centre bottom of the centre of gravity adjustment of whole device to the lower semisphere of ball float, so just can guarantee that the position of communication antenna 2 in ball is up, guaranteed the reliable of communication.Ball float bottom is fixedly connected with stationary installation C by connecting line B, and the length of connecting line B is approximately that half length of the pond depth of water gets final product.Connecting line B upper end is connecting ball float, and connecting line B lower end is connected and fixed device C, and stationary installation C inserts pond bottom, and stationary installation C can be easy timber, and length is greater than 1/2nd the pond depth of water.Stationary installation C can be fixed on ball float any position in pond, and can prevent that ball float from floating, and is very convenient.

Referring to Fig. 2, the tip position of the episphere in ball float arranges communication antenna 2, and what can guarantee to communicate by letter is good, and communication antenna 2 can be fixed on the episphere inwall with support.The tip position of episphere also is provided with charging inlet and power switch 3, and the top of charging inlet and power switch 3 is charging inlet lids 1, and water-impervious rubber 8 is installed around the junction of charging inlet and power switch 3 positions, the seepage of anti-sealing.Opening charging inlet lid 1 can connect external power charging by charging inlet and power switch 3, in the time of idle, in time cuts off external power supply with energy-conservation, the flying power of assurance device.

The bottom of the lower semisphere in ball float arranges circuit board 5, and circuit board 5 is fixed on the ball float inwall, and circuit board 5 can increase bottom weight, reduces the ball float center of gravity.The fixing filter mantle 7 in the lower end of ball float outside, antimony electrode pH value sensor 6 is positioned at filter mantle 7, antimony electrode pH value sensor 6 upper ends are fixed on the ball float inwall, and antimony electrode pH value sensor 6 will be immersed in water, water-impervious rubber 8 is installed around antimony electrode pH value sensor 6, the seepage of anti-sealing.Because the water-quality ratio of aquaculture is more muddy, impurities is more, in order to make the long-time effectively work of antimony electrode pH value sensor 6, use filter mantle 7 can filter out most of muddy impurity, prevent that these impurity are bonded at the precision that on antimony electrode pH value sensor 6, impact is measured for a long time, thereby guaranteed that the measurement in the whole course of work is all effectively, avoids the wrong report of warning or fails to report in the situation that once full electric.Filter mantle 7 adopts screw thread rotation to be arranged on the ball float lower end, covers on antimony electrode pH value sensor 6 outsides, after long-time use end once, can very easily filter mantle 7 be removed antimony electrode pH value sensor 6 is cleaned and calibrates.

Between communication antenna 2 and circuit board 5, between charging inlet and power switch 3 and circuit board 5 and all connect trough 4 between antimony electrode pH value sensor 6 and circuit board 5, the circuit connecting wire of all elements all comes in trough 4.

Circuit structure diagram referring to Fig. 3, on circuit board 5, be integrated with the MCU(micro-control unit), accumulator, each circuit and modules, wherein, accumulator is by charging inlet and the power switch 3 of charging circuit connecting circuit board 5 outsides, accumulator connects MCU by power module, power module connects respectively MCU, wireless communication module and filtering and amplifying circuit, and wireless communication module connects respectively MCU and outside communication antenna 2.MCU also connects A/D modular converter, filtering and amplifying circuit, electric current and voltage modular converter and location slope adjustment module successively, and location slope adjustment module connects outside antimony electrode pH value sensor 6.

The operation of the utility model device is take circuit board 5 as the main body core, combined charge interface and power switch 3, and communication antenna 2 and antimony electrode pH value sensor 6 these peripheral cells are worked together.Accumulator is that the energy of whole work is given each circuit, the module for power supply join with it, when the electric energy of accumulator is low, the warning message of low-voltage can be informed to the staff by wireless network, and request is charging in time.charging inlet and power switch 3 are the switch place of charging inlet and power supply, in case the staff has opened power switch, device just is in the duty to the pH value Real-Time Monitoring, antimony electrode pH value sensor 6 passes through current pH value to amplify, filtering is converted to the electric signal of simulation after processing (0 ~ 5V) gives the A/D modular converter, the A/D modular converter is that digital signal sends the MCU processing that the chip model is EFM32 to by analog signal conversion, finally by EFM32 internal arithmetic program, drawn the actual pH value of current water quality, after the pH value collection is complete, at first EFM32 can automatically make and judge relatively whether this value is in rational threshold range, then by the SPI interface, this pH value and current temporal information are passed to the wireless communication module that chip is AX5043, AX5043 can put into new data the transmission buffer zone automatically after receiving new data, and wait for recent communication, when next call duration time arrives, namely the new data from node (the namely information such as pH value in current cultivation pool) can be sent to the receiver in the poultry feeders hand and require to store (in order to improve real-time, the frequency that can improve as required communication gets final product), when if this pH value has reached abnormal alarm threshold value, receiver has a warning measure (hummer rings or the alarm lamp flicker), in order to cause the attention of poultry feeders, due to each node correspondence oneself No. ID, this is equivalent to the address information of communicating by letter in communication protocol, therefore poultry feeders can be located immediately and abnormal node be occurred, and then take solution to its corresponding waters, very convenient.radio communication is semiduplex communication mechanism, not only this node apparatus can send to significant data the receiver of poultry feeders, poultry feeders also can be adjusted by receiver the alarm threshold value scope of pH value, the detection frequency of pH value, the information of real-time time and the important parameters such as frequency of radio communication, and by procotol, send to the agent set A of any one destination node in network, the frequency of operation that is to say agent set A is not unalterable, can do according to actual needs in time and revise, if consider that low-power consumption can suitably reduce sampling and the frequency of communicating by letter, if instead want to improve Real-Time Monitoring fast, can increase sampling and the frequency of communicating by letter, very convenient and intelligent.

Claims

1. the pH value for aquaculture is monitored the WSN node apparatus, it is characterized in that: comprise a ball float that swims in the sealing in aquaculture pond water, the ball float bottom is fixedly connected with the stationary installation of inserting pond bottom by connecting line; The top of the episphere in ball float is provided with communication antenna (2), charging inlet and power switch (3), the bottom of the lower semisphere in ball float is provided with circuit board (5), the lower end of ball float outside is filter mantle (7) fixedly, and the antimony electrode pH value sensor (6) that is immersed in water is arranged in filter mantle (7); On circuit board (5), be integrated with MCU, accumulator, each circuit and modules, accumulator connects charging inlet and power switch (3) by charging circuit, accumulator connects MCU by power module, power module connects respectively MCU, wireless communication module and filtering and amplifying circuit, wireless communication module connects respectively MCU and communication antenna (2), MCU also connects A/D modular converter, filtering and amplifying circuit, electric current and voltage modular converter and location slope adjustment module successively, and location slope adjustment module connects antimony electrode pH value sensor (6).

2. a kind of pH value for aquaculture is monitored the WSN node apparatus according to claim 1, it is characterized in that: between communication antenna (2) and circuit board (5), between charging inlet and power switch (3) and circuit board (5), between antimony electrode pH value sensor (6) and circuit board (5), all connect trough (4), all circuit connections all come in trough (4).

3. a kind of pH value for aquaculture is monitored the WSN node apparatus according to claim 1, and it is characterized in that: antimony electrode pH value sensor (6) upper end is fixedly connected with the inwall of ball float, around antimony electrode pH value sensor (6), is provided with water-impervious rubber (8).

4. a kind of pH value for aquaculture is monitored the WSN node apparatus according to claim 1, and it is characterized in that: the top of charging inlet and power switch (3) is charging inlet lid (1).